diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/b43legacy')
25 files changed, 14682 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/b43legacy/Kconfig b/drivers/net/wireless/broadcom/b43legacy/Kconfig new file mode 100644 index 000000000..e4da34ec4 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/Kconfig @@ -0,0 +1,105 @@ +# SPDX-License-Identifier: GPL-2.0-only +config B43LEGACY + tristate "Broadcom 43xx-legacy wireless support (mac80211 stack)" + depends on SSB_POSSIBLE && MAC80211 && HAS_DMA + select SSB + select FW_LOADER + help + b43legacy is a driver for 802.11b devices from Broadcom (BCM4301 and + BCM4303) and early model 802.11g chips (BCM4306 Ver. 2) used in the + Linksys WPC54G V1 PCMCIA devices. + + Newer 802.11g and 802.11a devices need b43. + + It is safe to include both b43 and b43legacy as the underlying glue + layer will automatically load the correct version for your device. + + This driver uses V3 firmware, which must be installed separately using + b43-fwcutter. + + This driver can be built as a module (recommended) that will be + called "b43legacy". If unsure, say M. + +# Auto-select SSB PCI-HOST support, if possible +config B43LEGACY_PCI_AUTOSELECT + bool + depends on B43LEGACY && SSB_PCIHOST_POSSIBLE + select SSB_PCIHOST + select SSB_B43_PCI_BRIDGE + default y + +# Auto-select SSB PCICORE driver, if possible +config B43LEGACY_PCICORE_AUTOSELECT + bool + depends on B43LEGACY && SSB_DRIVER_PCICORE_POSSIBLE + select SSB_DRIVER_PCICORE + default y + +# LED support +# This config option automatically enables b43legacy LEDS support, +# if it's possible. +config B43LEGACY_LEDS + bool + depends on B43LEGACY && MAC80211_LEDS && (LEDS_CLASS = y || LEDS_CLASS = B43LEGACY) + default y + +# This config option automatically enables b43 HW-RNG support, +# if the HW-RNG core is enabled. +config B43LEGACY_HWRNG + bool + depends on B43LEGACY && (HW_RANDOM = y || HW_RANDOM = B43LEGACY) + default y + +config B43LEGACY_DEBUG + bool "Broadcom 43xx-legacy debugging" + depends on B43LEGACY + default y + help + Say Y, because this information will help you get the driver running. + This option generates a minimum of log output. + +config B43LEGACY_DMA + bool + depends on B43LEGACY + +config B43LEGACY_PIO + bool + depends on B43LEGACY + +choice + prompt "Broadcom 43xx-legacy data transfer mode" + depends on B43LEGACY + default B43LEGACY_DMA_AND_PIO_MODE + +config B43LEGACY_DMA_AND_PIO_MODE + bool "DMA + PIO" + select B43LEGACY_DMA + select B43LEGACY_PIO + help + Include both, Direct Memory Access (DMA) and Programmed I/O (PIO) + data transfer modes. The mode actually used is selectable through + the module parameter "pio". With pio=0 as a module parameter, the + default DMA is used, otherwise PIO is used. + + If unsure, choose this option. + +config B43LEGACY_DMA_MODE + bool "DMA (Direct Memory Access) only" + select B43LEGACY_DMA + help + Only include Direct Memory Access (DMA). + This reduces the size of the driver module, by omitting the PIO code. + +config B43LEGACY_PIO_MODE + bool "PIO (Programmed I/O) only" + select B43LEGACY_PIO + help + Only include Programmed I/O (PIO). + This reduces the size of the driver module, by omitting the DMA code. + Please note that PIO transfers are slow (compared to DMA). + + Also note that not all devices of the b43legacy series support PIO. + + You should use PIO only if DMA does not work for you. + +endchoice diff --git a/drivers/net/wireless/broadcom/b43legacy/Makefile b/drivers/net/wireless/broadcom/b43legacy/Makefile new file mode 100644 index 000000000..f8b392f09 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/Makefile @@ -0,0 +1,20 @@ +# SPDX-License-Identifier: GPL-2.0 +# b43legacy core +b43legacy-y += main.o +b43legacy-y += ilt.o +b43legacy-y += phy.o +b43legacy-y += radio.o +b43legacy-y += sysfs.o +b43legacy-y += xmit.o +# b43 RFKILL button support +b43legacy-y += rfkill.o +# b43legacy LED support +b43legacy-$(CONFIG_B43LEGACY_LEDS) += leds.o +# b43legacy debugging +b43legacy-$(CONFIG_B43LEGACY_DEBUG) += debugfs.o +# b43legacy DMA and PIO +b43legacy-$(CONFIG_B43LEGACY_DMA) += dma.o +b43legacy-$(CONFIG_B43LEGACY_PIO) += pio.o + +obj-$(CONFIG_B43LEGACY) += b43legacy.o + diff --git a/drivers/net/wireless/broadcom/b43legacy/b43legacy.h b/drivers/net/wireless/broadcom/b43legacy/b43legacy.h new file mode 100644 index 000000000..f49365d14 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/b43legacy.h @@ -0,0 +1,859 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_H_ +#define B43legacy_H_ + +#include <linux/hw_random.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/stringify.h> +#include <linux/netdevice.h> +#include <linux/pci.h> +#include <linux/atomic.h> +#include <linux/io.h> + +#include <linux/ssb/ssb.h> +#include <linux/ssb/ssb_driver_chipcommon.h> +#include <linux/completion.h> + +#include <net/mac80211.h> + +#include "debugfs.h" +#include "leds.h" +#include "rfkill.h" +#include "phy.h" + + +#define B43legacy_IRQWAIT_MAX_RETRIES 20 + +/* MMIO offsets */ +#define B43legacy_MMIO_DMA0_REASON 0x20 +#define B43legacy_MMIO_DMA0_IRQ_MASK 0x24 +#define B43legacy_MMIO_DMA1_REASON 0x28 +#define B43legacy_MMIO_DMA1_IRQ_MASK 0x2C +#define B43legacy_MMIO_DMA2_REASON 0x30 +#define B43legacy_MMIO_DMA2_IRQ_MASK 0x34 +#define B43legacy_MMIO_DMA3_REASON 0x38 +#define B43legacy_MMIO_DMA3_IRQ_MASK 0x3C +#define B43legacy_MMIO_DMA4_REASON 0x40 +#define B43legacy_MMIO_DMA4_IRQ_MASK 0x44 +#define B43legacy_MMIO_DMA5_REASON 0x48 +#define B43legacy_MMIO_DMA5_IRQ_MASK 0x4C +#define B43legacy_MMIO_MACCTL 0x120 /* MAC control */ +#define B43legacy_MMIO_MACCMD 0x124 /* MAC command */ +#define B43legacy_MMIO_GEN_IRQ_REASON 0x128 +#define B43legacy_MMIO_GEN_IRQ_MASK 0x12C +#define B43legacy_MMIO_RAM_CONTROL 0x130 +#define B43legacy_MMIO_RAM_DATA 0x134 +#define B43legacy_MMIO_PS_STATUS 0x140 +#define B43legacy_MMIO_RADIO_HWENABLED_HI 0x158 +#define B43legacy_MMIO_SHM_CONTROL 0x160 +#define B43legacy_MMIO_SHM_DATA 0x164 +#define B43legacy_MMIO_SHM_DATA_UNALIGNED 0x166 +#define B43legacy_MMIO_XMITSTAT_0 0x170 +#define B43legacy_MMIO_XMITSTAT_1 0x174 +#define B43legacy_MMIO_REV3PLUS_TSF_LOW 0x180 /* core rev >= 3 only */ +#define B43legacy_MMIO_REV3PLUS_TSF_HIGH 0x184 /* core rev >= 3 only */ +#define B43legacy_MMIO_TSF_CFP_REP 0x188 +#define B43legacy_MMIO_TSF_CFP_START 0x18C +/* 32-bit DMA */ +#define B43legacy_MMIO_DMA32_BASE0 0x200 +#define B43legacy_MMIO_DMA32_BASE1 0x220 +#define B43legacy_MMIO_DMA32_BASE2 0x240 +#define B43legacy_MMIO_DMA32_BASE3 0x260 +#define B43legacy_MMIO_DMA32_BASE4 0x280 +#define B43legacy_MMIO_DMA32_BASE5 0x2A0 +/* 64-bit DMA */ +#define B43legacy_MMIO_DMA64_BASE0 0x200 +#define B43legacy_MMIO_DMA64_BASE1 0x240 +#define B43legacy_MMIO_DMA64_BASE2 0x280 +#define B43legacy_MMIO_DMA64_BASE3 0x2C0 +#define B43legacy_MMIO_DMA64_BASE4 0x300 +#define B43legacy_MMIO_DMA64_BASE5 0x340 +/* PIO */ +#define B43legacy_MMIO_PIO1_BASE 0x300 +#define B43legacy_MMIO_PIO2_BASE 0x310 +#define B43legacy_MMIO_PIO3_BASE 0x320 +#define B43legacy_MMIO_PIO4_BASE 0x330 + +#define B43legacy_MMIO_PHY_VER 0x3E0 +#define B43legacy_MMIO_PHY_RADIO 0x3E2 +#define B43legacy_MMIO_PHY0 0x3E6 +#define B43legacy_MMIO_ANTENNA 0x3E8 +#define B43legacy_MMIO_CHANNEL 0x3F0 +#define B43legacy_MMIO_CHANNEL_EXT 0x3F4 +#define B43legacy_MMIO_RADIO_CONTROL 0x3F6 +#define B43legacy_MMIO_RADIO_DATA_HIGH 0x3F8 +#define B43legacy_MMIO_RADIO_DATA_LOW 0x3FA +#define B43legacy_MMIO_PHY_CONTROL 0x3FC +#define B43legacy_MMIO_PHY_DATA 0x3FE +#define B43legacy_MMIO_MACFILTER_CONTROL 0x420 +#define B43legacy_MMIO_MACFILTER_DATA 0x422 +#define B43legacy_MMIO_RCMTA_COUNT 0x43C /* Receive Match Transmitter Addr */ +#define B43legacy_MMIO_RADIO_HWENABLED_LO 0x49A +#define B43legacy_MMIO_GPIO_CONTROL 0x49C +#define B43legacy_MMIO_GPIO_MASK 0x49E +#define B43legacy_MMIO_TSF_CFP_PRETBTT 0x612 +#define B43legacy_MMIO_TSF_0 0x632 /* core rev < 3 only */ +#define B43legacy_MMIO_TSF_1 0x634 /* core rev < 3 only */ +#define B43legacy_MMIO_TSF_2 0x636 /* core rev < 3 only */ +#define B43legacy_MMIO_TSF_3 0x638 /* core rev < 3 only */ +#define B43legacy_MMIO_RNG 0x65A +#define B43legacy_MMIO_POWERUP_DELAY 0x6A8 + +/* SPROM boardflags_lo values */ +#define B43legacy_BFL_PACTRL 0x0002 +#define B43legacy_BFL_RSSI 0x0008 +#define B43legacy_BFL_EXTLNA 0x1000 + +/* GPIO register offset, in both ChipCommon and PCI core. */ +#define B43legacy_GPIO_CONTROL 0x6c + +/* SHM Routing */ +#define B43legacy_SHM_SHARED 0x0001 +#define B43legacy_SHM_WIRELESS 0x0002 +#define B43legacy_SHM_HW 0x0004 +#define B43legacy_SHM_UCODE 0x0300 + +/* SHM Routing modifiers */ +#define B43legacy_SHM_AUTOINC_R 0x0200 /* Read Auto-increment */ +#define B43legacy_SHM_AUTOINC_W 0x0100 /* Write Auto-increment */ +#define B43legacy_SHM_AUTOINC_RW (B43legacy_SHM_AUTOINC_R | \ + B43legacy_SHM_AUTOINC_W) + +/* Misc SHM_SHARED offsets */ +#define B43legacy_SHM_SH_WLCOREREV 0x0016 /* 802.11 core revision */ +#define B43legacy_SHM_SH_HOSTFLO 0x005E /* Hostflags ucode opts (low) */ +#define B43legacy_SHM_SH_HOSTFHI 0x0060 /* Hostflags ucode opts (high) */ +/* SHM_SHARED crypto engine */ +#define B43legacy_SHM_SH_KEYIDXBLOCK 0x05D4 /* Key index/algorithm block */ +/* SHM_SHARED beacon/AP variables */ +#define B43legacy_SHM_SH_DTIMP 0x0012 /* DTIM period */ +#define B43legacy_SHM_SH_BTL0 0x0018 /* Beacon template length 0 */ +#define B43legacy_SHM_SH_BTL1 0x001A /* Beacon template length 1 */ +#define B43legacy_SHM_SH_BTSFOFF 0x001C /* Beacon TSF offset */ +#define B43legacy_SHM_SH_TIMPOS 0x001E /* TIM position in beacon */ +#define B43legacy_SHM_SH_BEACPHYCTL 0x0054 /* Beacon PHY TX control word */ +/* SHM_SHARED ACK/CTS control */ +#define B43legacy_SHM_SH_ACKCTSPHYCTL 0x0022 /* ACK/CTS PHY control word */ +/* SHM_SHARED probe response variables */ +#define B43legacy_SHM_SH_PRTLEN 0x004A /* Probe Response template length */ +#define B43legacy_SHM_SH_PRMAXTIME 0x0074 /* Probe Response max time */ +#define B43legacy_SHM_SH_PRPHYCTL 0x0188 /* Probe Resp PHY TX control */ +/* SHM_SHARED rate tables */ +#define B43legacy_SHM_SH_OFDMDIRECT 0x0480 /* Pointer to OFDM direct map */ +#define B43legacy_SHM_SH_OFDMBASIC 0x04A0 /* Pointer to OFDM basic rate map */ +#define B43legacy_SHM_SH_CCKDIRECT 0x04C0 /* Pointer to CCK direct map */ +#define B43legacy_SHM_SH_CCKBASIC 0x04E0 /* Pointer to CCK basic rate map */ +/* SHM_SHARED microcode soft registers */ +#define B43legacy_SHM_SH_UCODEREV 0x0000 /* Microcode revision */ +#define B43legacy_SHM_SH_UCODEPATCH 0x0002 /* Microcode patchlevel */ +#define B43legacy_SHM_SH_UCODEDATE 0x0004 /* Microcode date */ +#define B43legacy_SHM_SH_UCODETIME 0x0006 /* Microcode time */ +#define B43legacy_SHM_SH_SPUWKUP 0x0094 /* pre-wakeup for synth PU in us */ +#define B43legacy_SHM_SH_PRETBTT 0x0096 /* pre-TBTT in us */ + +#define B43legacy_UCODEFLAGS_OFFSET 0x005E + +/* Hardware Radio Enable masks */ +#define B43legacy_MMIO_RADIO_HWENABLED_HI_MASK (1 << 16) +#define B43legacy_MMIO_RADIO_HWENABLED_LO_MASK (1 << 4) + +/* HostFlags. See b43legacy_hf_read/write() */ +#define B43legacy_HF_SYMW 0x00000002 /* G-PHY SYM workaround */ +#define B43legacy_HF_GDCW 0x00000020 /* G-PHY DV cancel filter */ +#define B43legacy_HF_OFDMPABOOST 0x00000040 /* Enable PA boost OFDM */ +#define B43legacy_HF_EDCF 0x00000100 /* on if WME/MAC suspended */ + +/* MacFilter offsets. */ +#define B43legacy_MACFILTER_SELF 0x0000 +#define B43legacy_MACFILTER_BSSID 0x0003 +#define B43legacy_MACFILTER_MAC 0x0010 + +/* PHYVersioning */ +#define B43legacy_PHYTYPE_B 0x01 +#define B43legacy_PHYTYPE_G 0x02 + +/* PHYRegisters */ +#define B43legacy_PHY_G_LO_CONTROL 0x0810 +#define B43legacy_PHY_ILT_G_CTRL 0x0472 +#define B43legacy_PHY_ILT_G_DATA1 0x0473 +#define B43legacy_PHY_ILT_G_DATA2 0x0474 +#define B43legacy_PHY_G_PCTL 0x0029 +#define B43legacy_PHY_RADIO_BITFIELD 0x0401 +#define B43legacy_PHY_G_CRS 0x0429 +#define B43legacy_PHY_NRSSILT_CTRL 0x0803 +#define B43legacy_PHY_NRSSILT_DATA 0x0804 + +/* RadioRegisters */ +#define B43legacy_RADIOCTL_ID 0x01 + +/* MAC Control bitfield */ +#define B43legacy_MACCTL_ENABLED 0x00000001 /* MAC Enabled */ +#define B43legacy_MACCTL_PSM_RUN 0x00000002 /* Run Microcode */ +#define B43legacy_MACCTL_PSM_JMP0 0x00000004 /* Microcode jump to 0 */ +#define B43legacy_MACCTL_SHM_ENABLED 0x00000100 /* SHM Enabled */ +#define B43legacy_MACCTL_IHR_ENABLED 0x00000400 /* IHR Region Enabled */ +#define B43legacy_MACCTL_BE 0x00010000 /* Big Endian mode */ +#define B43legacy_MACCTL_INFRA 0x00020000 /* Infrastructure mode */ +#define B43legacy_MACCTL_AP 0x00040000 /* AccessPoint mode */ +#define B43legacy_MACCTL_RADIOLOCK 0x00080000 /* Radio lock */ +#define B43legacy_MACCTL_BEACPROMISC 0x00100000 /* Beacon Promiscuous */ +#define B43legacy_MACCTL_KEEP_BADPLCP 0x00200000 /* Keep bad PLCP frames */ +#define B43legacy_MACCTL_KEEP_CTL 0x00400000 /* Keep control frames */ +#define B43legacy_MACCTL_KEEP_BAD 0x00800000 /* Keep bad frames (FCS) */ +#define B43legacy_MACCTL_PROMISC 0x01000000 /* Promiscuous mode */ +#define B43legacy_MACCTL_HWPS 0x02000000 /* Hardware Power Saving */ +#define B43legacy_MACCTL_AWAKE 0x04000000 /* Device is awake */ +#define B43legacy_MACCTL_TBTTHOLD 0x10000000 /* TBTT Hold */ +#define B43legacy_MACCTL_GMODE 0x80000000 /* G Mode */ + +/* MAC Command bitfield */ +#define B43legacy_MACCMD_BEACON0_VALID 0x00000001 /* Beacon 0 in template RAM is busy/valid */ +#define B43legacy_MACCMD_BEACON1_VALID 0x00000002 /* Beacon 1 in template RAM is busy/valid */ +#define B43legacy_MACCMD_DFQ_VALID 0x00000004 /* Directed frame queue valid (IBSS PS mode, ATIM) */ +#define B43legacy_MACCMD_CCA 0x00000008 /* Clear channel assessment */ +#define B43legacy_MACCMD_BGNOISE 0x00000010 /* Background noise */ + +/* 802.11 core specific TM State Low flags */ +#define B43legacy_TMSLOW_GMODE 0x20000000 /* G Mode Enable */ +#define B43legacy_TMSLOW_PLLREFSEL 0x00200000 /* PLL Freq Ref Select */ +#define B43legacy_TMSLOW_MACPHYCLKEN 0x00100000 /* MAC PHY Clock Ctrl Enbl */ +#define B43legacy_TMSLOW_PHYRESET 0x00080000 /* PHY Reset */ +#define B43legacy_TMSLOW_PHYCLKEN 0x00040000 /* PHY Clock Enable */ + +/* 802.11 core specific TM State High flags */ +#define B43legacy_TMSHIGH_FCLOCK 0x00040000 /* Fast Clock Available */ +#define B43legacy_TMSHIGH_GPHY 0x00010000 /* G-PHY avail (rev >= 5) */ + +#define B43legacy_UCODEFLAG_AUTODIV 0x0001 + +/* Generic-Interrupt reasons. */ +#define B43legacy_IRQ_MAC_SUSPENDED 0x00000001 +#define B43legacy_IRQ_BEACON 0x00000002 +#define B43legacy_IRQ_TBTT_INDI 0x00000004 /* Target Beacon Transmit Time */ +#define B43legacy_IRQ_BEACON_TX_OK 0x00000008 +#define B43legacy_IRQ_BEACON_CANCEL 0x00000010 +#define B43legacy_IRQ_ATIM_END 0x00000020 +#define B43legacy_IRQ_PMQ 0x00000040 +#define B43legacy_IRQ_PIO_WORKAROUND 0x00000100 +#define B43legacy_IRQ_MAC_TXERR 0x00000200 +#define B43legacy_IRQ_PHY_TXERR 0x00000800 +#define B43legacy_IRQ_PMEVENT 0x00001000 +#define B43legacy_IRQ_TIMER0 0x00002000 +#define B43legacy_IRQ_TIMER1 0x00004000 +#define B43legacy_IRQ_DMA 0x00008000 +#define B43legacy_IRQ_TXFIFO_FLUSH_OK 0x00010000 +#define B43legacy_IRQ_CCA_MEASURE_OK 0x00020000 +#define B43legacy_IRQ_NOISESAMPLE_OK 0x00040000 +#define B43legacy_IRQ_UCODE_DEBUG 0x08000000 +#define B43legacy_IRQ_RFKILL 0x10000000 +#define B43legacy_IRQ_TX_OK 0x20000000 +#define B43legacy_IRQ_PHY_G_CHANGED 0x40000000 +#define B43legacy_IRQ_TIMEOUT 0x80000000 + +#define B43legacy_IRQ_ALL 0xFFFFFFFF +#define B43legacy_IRQ_MASKTEMPLATE (B43legacy_IRQ_MAC_SUSPENDED | \ + B43legacy_IRQ_TBTT_INDI | \ + B43legacy_IRQ_ATIM_END | \ + B43legacy_IRQ_PMQ | \ + B43legacy_IRQ_MAC_TXERR | \ + B43legacy_IRQ_PHY_TXERR | \ + B43legacy_IRQ_DMA | \ + B43legacy_IRQ_TXFIFO_FLUSH_OK | \ + B43legacy_IRQ_NOISESAMPLE_OK | \ + B43legacy_IRQ_UCODE_DEBUG | \ + B43legacy_IRQ_RFKILL | \ + B43legacy_IRQ_TX_OK) + +/* Device specific rate values. + * The actual values defined here are (rate_in_mbps * 2). + * Some code depends on this. Don't change it. */ +#define B43legacy_CCK_RATE_1MB 2 +#define B43legacy_CCK_RATE_2MB 4 +#define B43legacy_CCK_RATE_5MB 11 +#define B43legacy_CCK_RATE_11MB 22 +#define B43legacy_OFDM_RATE_6MB 12 +#define B43legacy_OFDM_RATE_9MB 18 +#define B43legacy_OFDM_RATE_12MB 24 +#define B43legacy_OFDM_RATE_18MB 36 +#define B43legacy_OFDM_RATE_24MB 48 +#define B43legacy_OFDM_RATE_36MB 72 +#define B43legacy_OFDM_RATE_48MB 96 +#define B43legacy_OFDM_RATE_54MB 108 +/* Convert a b43legacy rate value to a rate in 100kbps */ +#define B43legacy_RATE_TO_100KBPS(rate) (((rate) * 10) / 2) + + +#define B43legacy_DEFAULT_SHORT_RETRY_LIMIT 7 +#define B43legacy_DEFAULT_LONG_RETRY_LIMIT 4 + +#define B43legacy_PHY_TX_BADNESS_LIMIT 1000 + +/* Max size of a security key */ +#define B43legacy_SEC_KEYSIZE 16 +/* Security algorithms. */ +enum { + B43legacy_SEC_ALGO_NONE = 0, /* unencrypted, as of TX header. */ + B43legacy_SEC_ALGO_WEP40, + B43legacy_SEC_ALGO_TKIP, + B43legacy_SEC_ALGO_AES, + B43legacy_SEC_ALGO_WEP104, + B43legacy_SEC_ALGO_AES_LEGACY, +}; + +/* Core Information Registers */ +#define B43legacy_CIR_BASE 0xf00 +#define B43legacy_CIR_SBTPSFLAG (B43legacy_CIR_BASE + 0x18) +#define B43legacy_CIR_SBIMSTATE (B43legacy_CIR_BASE + 0x90) +#define B43legacy_CIR_SBINTVEC (B43legacy_CIR_BASE + 0x94) +#define B43legacy_CIR_SBTMSTATELOW (B43legacy_CIR_BASE + 0x98) +#define B43legacy_CIR_SBTMSTATEHIGH (B43legacy_CIR_BASE + 0x9c) +#define B43legacy_CIR_SBIMCONFIGLOW (B43legacy_CIR_BASE + 0xa8) +#define B43legacy_CIR_SB_ID_HI (B43legacy_CIR_BASE + 0xfc) + +/* sbtmstatehigh state flags */ +#define B43legacy_SBTMSTATEHIGH_SERROR 0x00000001 +#define B43legacy_SBTMSTATEHIGH_BUSY 0x00000004 +#define B43legacy_SBTMSTATEHIGH_TIMEOUT 0x00000020 +#define B43legacy_SBTMSTATEHIGH_G_PHY_AVAIL 0x00010000 +#define B43legacy_SBTMSTATEHIGH_COREFLAGS 0x1FFF0000 +#define B43legacy_SBTMSTATEHIGH_DMA64BIT 0x10000000 +#define B43legacy_SBTMSTATEHIGH_GATEDCLK 0x20000000 +#define B43legacy_SBTMSTATEHIGH_BISTFAILED 0x40000000 +#define B43legacy_SBTMSTATEHIGH_BISTCOMPLETE 0x80000000 + +/* sbimstate flags */ +#define B43legacy_SBIMSTATE_IB_ERROR 0x20000 +#define B43legacy_SBIMSTATE_TIMEOUT 0x40000 + +#define PFX KBUILD_MODNAME ": " +#ifdef assert +# undef assert +#endif +#ifdef CONFIG_B43LEGACY_DEBUG +# define B43legacy_WARN_ON(x) WARN_ON(x) +# define B43legacy_BUG_ON(expr) \ + do { \ + if (unlikely((expr))) { \ + printk(KERN_INFO PFX "Test (%s) failed\n", \ + #expr); \ + BUG_ON(expr); \ + } \ + } while (0) +# define B43legacy_DEBUG 1 +#else +/* This will evaluate the argument even if debugging is disabled. */ +static inline bool __b43legacy_warn_on_dummy(bool x) { return x; } +# define B43legacy_WARN_ON(x) __b43legacy_warn_on_dummy(unlikely(!!(x))) +# define B43legacy_BUG_ON(x) do { /* nothing */ } while (0) +# define B43legacy_DEBUG 0 +#endif + + +struct net_device; +struct pci_dev; +struct b43legacy_dmaring; +struct b43legacy_pioqueue; + +/* The firmware file header */ +#define B43legacy_FW_TYPE_UCODE 'u' +#define B43legacy_FW_TYPE_PCM 'p' +#define B43legacy_FW_TYPE_IV 'i' +struct b43legacy_fw_header { + /* File type */ + u8 type; + /* File format version */ + u8 ver; + u8 __padding[2]; + /* Size of the data. For ucode and PCM this is in bytes. + * For IV this is number-of-ivs. */ + __be32 size; +} __packed; + +/* Initial Value file format */ +#define B43legacy_IV_OFFSET_MASK 0x7FFF +#define B43legacy_IV_32BIT 0x8000 +struct b43legacy_iv { + __be16 offset_size; + union { + __be16 d16; + __be32 d32; + } __packed data; +} __packed; + +#define B43legacy_PHYMODE(phytype) (1 << (phytype)) +#define B43legacy_PHYMODE_B B43legacy_PHYMODE \ + ((B43legacy_PHYTYPE_B)) +#define B43legacy_PHYMODE_G B43legacy_PHYMODE \ + ((B43legacy_PHYTYPE_G)) + +/* Value pair to measure the LocalOscillator. */ +struct b43legacy_lopair { + s8 low; + s8 high; + u8 used:1; +}; +#define B43legacy_LO_COUNT (14*4) + +struct b43legacy_phy { + /* Possible PHYMODEs on this PHY */ + u8 possible_phymodes; + /* GMODE bit enabled in MACCTL? */ + bool gmode; + + /* Analog Type */ + u8 analog; + /* B43legacy_PHYTYPE_ */ + u8 type; + /* PHY revision number. */ + u8 rev; + + u16 antenna_diversity; + u16 savedpctlreg; + /* Radio versioning */ + u16 radio_manuf; /* Radio manufacturer */ + u16 radio_ver; /* Radio version */ + u8 calibrated:1; + u8 radio_rev; /* Radio revision */ + + bool dyn_tssi_tbl; /* tssi2dbm is kmalloc()ed. */ + + /* ACI (adjacent channel interference) flags. */ + bool aci_enable; + bool aci_wlan_automatic; + bool aci_hw_rssi; + + /* Radio switched on/off */ + bool radio_on; + struct { + /* Values saved when turning the radio off. + * They are needed when turning it on again. */ + bool valid; + u16 rfover; + u16 rfoverval; + } radio_off_context; + + u16 minlowsig[2]; + u16 minlowsigpos[2]; + + /* LO Measurement Data. + * Use b43legacy_get_lopair() to get a value. + */ + struct b43legacy_lopair *_lo_pairs; + /* TSSI to dBm table in use */ + const s8 *tssi2dbm; + /* idle TSSI value */ + s8 idle_tssi; + /* Target idle TSSI */ + int tgt_idle_tssi; + /* Current idle TSSI */ + int cur_idle_tssi; + + /* LocalOscillator control values. */ + struct b43legacy_txpower_lo_control *lo_control; + /* Values from b43legacy_calc_loopback_gain() */ + s16 max_lb_gain; /* Maximum Loopback gain in hdB */ + s16 trsw_rx_gain; /* TRSW RX gain in hdB */ + s16 lna_lod_gain; /* LNA lod */ + s16 lna_gain; /* LNA */ + s16 pga_gain; /* PGA */ + + /* Desired TX power level (in dBm). This is set by the user and + * adjusted in b43legacy_phy_xmitpower(). */ + u8 power_level; + + /* Values from b43legacy_calc_loopback_gain() */ + u16 loopback_gain[2]; + + /* TX Power control values. */ + /* B/G PHY */ + struct { + /* Current Radio Attenuation for TXpower recalculation. */ + u16 rfatt; + /* Current Baseband Attenuation for TXpower recalculation. */ + u16 bbatt; + /* Current TXpower control value for TXpower recalculation. */ + u16 txctl1; + u16 txctl2; + }; + /* A PHY */ + struct { + u16 txpwr_offset; + }; + + /* Current Interference Mitigation mode */ + int interfmode; + /* Stack of saved values from the Interference Mitigation code. + * Each value in the stack is laid out as follows: + * bit 0-11: offset + * bit 12-15: register ID + * bit 16-32: value + * register ID is: 0x1 PHY, 0x2 Radio, 0x3 ILT + */ +#define B43legacy_INTERFSTACK_SIZE 26 + u32 interfstack[B43legacy_INTERFSTACK_SIZE]; + + /* Saved values from the NRSSI Slope calculation */ + s16 nrssi[2]; + s32 nrssislope; + /* In memory nrssi lookup table. */ + s8 nrssi_lt[64]; + + /* current channel */ + u8 channel; + + u16 lofcal; + + u16 initval; + + /* PHY TX errors counter. */ + atomic_t txerr_cnt; + +#if B43legacy_DEBUG + /* Manual TX-power control enabled? */ + bool manual_txpower_control; + /* PHY registers locked by b43legacy_phy_lock()? */ + bool phy_locked; +#endif /* B43legacy_DEBUG */ +}; + +/* Data structures for DMA transmission, per 80211 core. */ +struct b43legacy_dma { + struct b43legacy_dmaring *tx_ring0; + struct b43legacy_dmaring *tx_ring1; + struct b43legacy_dmaring *tx_ring2; + struct b43legacy_dmaring *tx_ring3; + struct b43legacy_dmaring *tx_ring4; + struct b43legacy_dmaring *tx_ring5; + + struct b43legacy_dmaring *rx_ring0; + struct b43legacy_dmaring *rx_ring3; /* only on core.rev < 5 */ + + u32 translation; /* Routing bits */ +}; + +/* Data structures for PIO transmission, per 80211 core. */ +struct b43legacy_pio { + struct b43legacy_pioqueue *queue0; + struct b43legacy_pioqueue *queue1; + struct b43legacy_pioqueue *queue2; + struct b43legacy_pioqueue *queue3; +}; + +/* Context information for a noise calculation (Link Quality). */ +struct b43legacy_noise_calculation { + u8 channel_at_start; + bool calculation_running; + u8 nr_samples; + s8 samples[8][4]; +}; + +struct b43legacy_stats { + u8 link_noise; + /* Store the last TX/RX times here for updating the leds. */ + unsigned long last_tx; + unsigned long last_rx; +}; + +struct b43legacy_key { + void *keyconf; + bool enabled; + u8 algorithm; +}; + +#define B43legacy_QOS_QUEUE_NUM 4 + +struct b43legacy_wldev; + +/* QOS parameters for a queue. */ +struct b43legacy_qos_params { + /* The QOS parameters */ + struct ieee80211_tx_queue_params p; +}; + +/* Data structure for the WLAN parts (802.11 cores) of the b43legacy chip. */ +struct b43legacy_wl { + /* Pointer to the active wireless device on this chip */ + struct b43legacy_wldev *current_dev; + /* Pointer to the ieee80211 hardware data structure */ + struct ieee80211_hw *hw; + + spinlock_t irq_lock; /* locks IRQ */ + struct mutex mutex; /* locks wireless core state */ + spinlock_t leds_lock; /* lock for leds */ + + /* firmware loading work */ + struct work_struct firmware_load; + + /* We can only have one operating interface (802.11 core) + * at a time. General information about this interface follows. + */ + + struct ieee80211_vif *vif; + /* MAC address (can be NULL). */ + u8 mac_addr[ETH_ALEN]; + /* Current BSSID (can be NULL). */ + u8 bssid[ETH_ALEN]; + /* Interface type. (IEEE80211_IF_TYPE_XXX) */ + int if_type; + /* Is the card operating in AP, STA or IBSS mode? */ + bool operating; + /* filter flags */ + unsigned int filter_flags; + /* Stats about the wireless interface */ + struct ieee80211_low_level_stats ieee_stats; + +#ifdef CONFIG_B43LEGACY_HWRNG + struct hwrng rng; + u8 rng_initialized; + char rng_name[30 + 1]; +#endif + + /* List of all wireless devices on this chip */ + struct list_head devlist; + u8 nr_devs; + + bool radiotap_enabled; + bool radio_enabled; + + /* The beacon we are currently using (AP or IBSS mode). + * This beacon stuff is protected by the irq_lock. */ + struct sk_buff *current_beacon; + bool beacon0_uploaded; + bool beacon1_uploaded; + bool beacon_templates_virgin; /* Never wrote the templates? */ + struct work_struct beacon_update_trigger; + /* The current QOS parameters for the 4 queues. */ + struct b43legacy_qos_params qos_params[B43legacy_QOS_QUEUE_NUM]; + + /* Packet transmit work */ + struct work_struct tx_work; + + /* Queue of packets to be transmitted. */ + struct sk_buff_head tx_queue[B43legacy_QOS_QUEUE_NUM]; + + /* Flag that implement the queues stopping. */ + bool tx_queue_stopped[B43legacy_QOS_QUEUE_NUM]; + +}; + +/* Pointers to the firmware data and meta information about it. */ +struct b43legacy_firmware { + /* Microcode */ + const struct firmware *ucode; + /* PCM code */ + const struct firmware *pcm; + /* Initial MMIO values for the firmware */ + const struct firmware *initvals; + /* Initial MMIO values for the firmware, band-specific */ + const struct firmware *initvals_band; + /* Firmware revision */ + u16 rev; + /* Firmware patchlevel */ + u16 patch; +}; + +/* Device (802.11 core) initialization status. */ +enum { + B43legacy_STAT_UNINIT = 0, /* Uninitialized. */ + B43legacy_STAT_INITIALIZED = 1, /* Initialized, not yet started. */ + B43legacy_STAT_STARTED = 2, /* Up and running. */ +}; +#define b43legacy_status(wldev) atomic_read(&(wldev)->__init_status) +#define b43legacy_set_status(wldev, stat) do { \ + atomic_set(&(wldev)->__init_status, (stat)); \ + smp_wmb(); \ + } while (0) + +/* *** --- HOW LOCKING WORKS IN B43legacy --- *** + * + * You should always acquire both, wl->mutex and wl->irq_lock unless: + * - You don't need to acquire wl->irq_lock, if the interface is stopped. + * - You don't need to acquire wl->mutex in the IRQ handler, IRQ tasklet + * and packet TX path (and _ONLY_ there.) + */ + +/* Data structure for one wireless device (802.11 core) */ +struct b43legacy_wldev { + struct ssb_device *dev; + struct b43legacy_wl *wl; + + /* The device initialization status. + * Use b43legacy_status() to query. */ + atomic_t __init_status; + /* Saved init status for handling suspend. */ + int suspend_init_status; + + bool __using_pio; /* Using pio rather than dma. */ + bool bad_frames_preempt;/* Use "Bad Frames Preemption". */ + bool dfq_valid; /* Directed frame queue valid (IBSS PS mode, ATIM). */ + bool short_preamble; /* TRUE if using short preamble. */ + bool radio_hw_enable; /* State of radio hardware enable bit. */ + + /* PHY/Radio device. */ + struct b43legacy_phy phy; + union { + /* DMA engines. */ + struct b43legacy_dma dma; + /* PIO engines. */ + struct b43legacy_pio pio; + }; + + /* Various statistics about the physical device. */ + struct b43legacy_stats stats; + + /* The device LEDs. */ + struct b43legacy_led led_tx; + struct b43legacy_led led_rx; + struct b43legacy_led led_assoc; + struct b43legacy_led led_radio; + + /* Reason code of the last interrupt. */ + u32 irq_reason; + u32 dma_reason[6]; + /* The currently active generic-interrupt mask. */ + u32 irq_mask; + /* Link Quality calculation context. */ + struct b43legacy_noise_calculation noisecalc; + /* if > 0 MAC is suspended. if == 0 MAC is enabled. */ + int mac_suspended; + + /* Interrupt Service Routine tasklet (bottom-half) */ + struct tasklet_struct isr_tasklet; + + /* Periodic tasks */ + struct delayed_work periodic_work; + unsigned int periodic_state; + + struct work_struct restart_work; + + /* encryption/decryption */ + u16 ktp; /* Key table pointer */ + u8 max_nr_keys; + struct b43legacy_key key[58]; + + /* Firmware data */ + struct b43legacy_firmware fw; + const struct firmware *fwp; /* needed to pass fw pointer */ + + /* completion struct for firmware loading */ + struct completion fw_load_complete; + + /* Devicelist in struct b43legacy_wl (all 802.11 cores) */ + struct list_head list; + + /* Debugging stuff follows. */ +#ifdef CONFIG_B43LEGACY_DEBUG + struct b43legacy_dfsentry *dfsentry; +#endif +}; + + +static inline +struct b43legacy_wl *hw_to_b43legacy_wl(struct ieee80211_hw *hw) +{ + return hw->priv; +} + +/* Helper function, which returns a boolean. + * TRUE, if PIO is used; FALSE, if DMA is used. + */ +#if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO) +static inline +int b43legacy_using_pio(struct b43legacy_wldev *dev) +{ + return dev->__using_pio; +} +#elif defined(CONFIG_B43LEGACY_DMA) +static inline +int b43legacy_using_pio(struct b43legacy_wldev *dev) +{ + return 0; +} +#elif defined(CONFIG_B43LEGACY_PIO) +static inline +int b43legacy_using_pio(struct b43legacy_wldev *dev) +{ + return 1; +} +#else +# error "Using neither DMA nor PIO? Confused..." +#endif + + +static inline +struct b43legacy_wldev *dev_to_b43legacy_wldev(struct device *dev) +{ + struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); + return ssb_get_drvdata(ssb_dev); +} + +/* Is the device operating in a specified mode (IEEE80211_IF_TYPE_XXX). */ +static inline +int b43legacy_is_mode(struct b43legacy_wl *wl, int type) +{ + return (wl->operating && + wl->if_type == type); +} + +static inline +bool is_bcm_board_vendor(struct b43legacy_wldev *dev) +{ + return (dev->dev->bus->boardinfo.vendor == PCI_VENDOR_ID_BROADCOM); +} + +static inline +u16 b43legacy_read16(struct b43legacy_wldev *dev, u16 offset) +{ + return ssb_read16(dev->dev, offset); +} + +static inline +void b43legacy_write16(struct b43legacy_wldev *dev, u16 offset, u16 value) +{ + ssb_write16(dev->dev, offset, value); +} + +static inline +u32 b43legacy_read32(struct b43legacy_wldev *dev, u16 offset) +{ + return ssb_read32(dev->dev, offset); +} + +static inline +void b43legacy_write32(struct b43legacy_wldev *dev, u16 offset, u32 value) +{ + ssb_write32(dev->dev, offset, value); +} + +static inline +struct b43legacy_lopair *b43legacy_get_lopair(struct b43legacy_phy *phy, + u16 radio_attenuation, + u16 baseband_attenuation) +{ + return phy->_lo_pairs + (radio_attenuation + + 14 * (baseband_attenuation / 2)); +} + + + +/* Message printing */ +__printf(2, 3) +void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...); +__printf(2, 3) +void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...); +__printf(2, 3) +void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...); +#if B43legacy_DEBUG +__printf(2, 3) +void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...); +#else /* DEBUG */ +# define b43legacydbg(wl, fmt...) do { /* nothing */ } while (0) +#endif /* DEBUG */ + +/* Macros for printing a value in Q5.2 format */ +#define Q52_FMT "%u.%u" +#define Q52_ARG(q52) ((q52) / 4), (((q52) & 3) * 100 / 4) + +#endif /* B43legacy_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/debugfs.c b/drivers/net/wireless/broadcom/b43legacy/debugfs.c new file mode 100644 index 000000000..e7e4293c0 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/debugfs.c @@ -0,0 +1,470 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + debugfs driver debugging code + + Copyright (c) 2005-2007 Michael Buesch <m@bues.ch> + + +*/ + +#include <linux/fs.h> +#include <linux/debugfs.h> +#include <linux/slab.h> +#include <linux/netdevice.h> +#include <linux/pci.h> +#include <linux/mutex.h> + +#include "b43legacy.h" +#include "main.h" +#include "debugfs.h" +#include "dma.h" +#include "pio.h" +#include "xmit.h" + + +/* The root directory. */ +static struct dentry *rootdir; + +struct b43legacy_debugfs_fops { + ssize_t (*read)(struct b43legacy_wldev *dev, char *buf, size_t bufsize); + int (*write)(struct b43legacy_wldev *dev, const char *buf, size_t count); + struct file_operations fops; + /* Offset of struct b43legacy_dfs_file in struct b43legacy_dfsentry */ + size_t file_struct_offset; + /* Take wl->irq_lock before calling read/write? */ + bool take_irqlock; +}; + +static inline +struct b43legacy_dfs_file * fops_to_dfs_file(struct b43legacy_wldev *dev, + const struct b43legacy_debugfs_fops *dfops) +{ + void *p; + + p = dev->dfsentry; + p += dfops->file_struct_offset; + + return p; +} + + +#define fappend(fmt, x...) \ + do { \ + if (bufsize - count) \ + count += scnprintf(buf + count, \ + bufsize - count, \ + fmt , ##x); \ + else \ + printk(KERN_ERR "b43legacy: fappend overflow\n"); \ + } while (0) + + +/* wl->irq_lock is locked */ +static ssize_t tsf_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize) +{ + ssize_t count = 0; + u64 tsf; + + b43legacy_tsf_read(dev, &tsf); + fappend("0x%08x%08x\n", + (unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32), + (unsigned int)(tsf & 0xFFFFFFFFULL)); + + return count; +} + +/* wl->irq_lock is locked */ +static int tsf_write_file(struct b43legacy_wldev *dev, const char *buf, size_t count) +{ + u64 tsf; + + if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1) + return -EINVAL; + b43legacy_tsf_write(dev, tsf); + + return 0; +} + +/* wl->irq_lock is locked */ +static ssize_t ucode_regs_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize) +{ + ssize_t count = 0; + int i; + + for (i = 0; i < 64; i++) { + fappend("r%d = 0x%04x\n", i, + b43legacy_shm_read16(dev, B43legacy_SHM_WIRELESS, i)); + } + + return count; +} + +/* wl->irq_lock is locked */ +static ssize_t shm_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize) +{ + ssize_t count = 0; + int i; + u16 tmp; + __le16 *le16buf = (__le16 *)buf; + + for (i = 0; i < 0x1000; i++) { + if (bufsize < sizeof(tmp)) + break; + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 2 * i); + le16buf[i] = cpu_to_le16(tmp); + count += sizeof(tmp); + bufsize -= sizeof(tmp); + } + + return count; +} + +static ssize_t txstat_read_file(struct b43legacy_wldev *dev, char *buf, size_t bufsize) +{ + struct b43legacy_txstatus_log *log = &dev->dfsentry->txstatlog; + ssize_t count = 0; + unsigned long flags; + int i, idx; + struct b43legacy_txstatus *stat; + + spin_lock_irqsave(&log->lock, flags); + if (log->end < 0) { + fappend("Nothing transmitted, yet\n"); + goto out_unlock; + } + fappend("b43legacy TX status reports:\n\n" + "index | cookie | seq | phy_stat | frame_count | " + "rts_count | supp_reason | pm_indicated | " + "intermediate | for_ampdu | acked\n" "---\n"); + i = log->end + 1; + idx = 0; + while (1) { + if (i == B43legacy_NR_LOGGED_TXSTATUS) + i = 0; + stat = &(log->log[i]); + if (stat->cookie) { + fappend("%03d | " + "0x%04X | 0x%04X | 0x%02X | " + "0x%X | 0x%X | " + "%u | %u | " + "%u | %u | %u\n", + idx, + stat->cookie, stat->seq, stat->phy_stat, + stat->frame_count, stat->rts_count, + stat->supp_reason, stat->pm_indicated, + stat->intermediate, stat->for_ampdu, + stat->acked); + idx++; + } + if (i == log->end) + break; + i++; + } +out_unlock: + spin_unlock_irqrestore(&log->lock, flags); + + return count; +} + +/* wl->irq_lock is locked */ +static int restart_write_file(struct b43legacy_wldev *dev, const char *buf, size_t count) +{ + int err = 0; + + if (count > 0 && buf[0] == '1') { + b43legacy_controller_restart(dev, "manually restarted"); + } else + err = -EINVAL; + + return err; +} + +#undef fappend + +static ssize_t b43legacy_debugfs_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct b43legacy_wldev *dev; + struct b43legacy_debugfs_fops *dfops; + struct b43legacy_dfs_file *dfile; + ssize_t ret; + char *buf; + const size_t bufsize = 1024 * 16; /* 16 KiB buffer */ + const size_t buforder = get_order(bufsize); + int err = 0; + + if (!count) + return 0; + dev = file->private_data; + if (!dev) + return -ENODEV; + + mutex_lock(&dev->wl->mutex); + if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) { + err = -ENODEV; + goto out_unlock; + } + + dfops = container_of(debugfs_real_fops(file), + struct b43legacy_debugfs_fops, fops); + if (!dfops->read) { + err = -ENOSYS; + goto out_unlock; + } + dfile = fops_to_dfs_file(dev, dfops); + + if (!dfile->buffer) { + buf = (char *)__get_free_pages(GFP_KERNEL, buforder); + if (!buf) { + err = -ENOMEM; + goto out_unlock; + } + memset(buf, 0, bufsize); + if (dfops->take_irqlock) { + spin_lock_irq(&dev->wl->irq_lock); + ret = dfops->read(dev, buf, bufsize); + spin_unlock_irq(&dev->wl->irq_lock); + } else + ret = dfops->read(dev, buf, bufsize); + if (ret <= 0) { + free_pages((unsigned long)buf, buforder); + err = ret; + goto out_unlock; + } + dfile->data_len = ret; + dfile->buffer = buf; + } + + ret = simple_read_from_buffer(userbuf, count, ppos, + dfile->buffer, + dfile->data_len); + if (*ppos >= dfile->data_len) { + free_pages((unsigned long)dfile->buffer, buforder); + dfile->buffer = NULL; + dfile->data_len = 0; + } +out_unlock: + mutex_unlock(&dev->wl->mutex); + + return err ? err : ret; +} + +static ssize_t b43legacy_debugfs_write(struct file *file, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct b43legacy_wldev *dev; + struct b43legacy_debugfs_fops *dfops; + char *buf; + int err = 0; + + if (!count) + return 0; + if (count > PAGE_SIZE) + return -E2BIG; + dev = file->private_data; + if (!dev) + return -ENODEV; + + mutex_lock(&dev->wl->mutex); + if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) { + err = -ENODEV; + goto out_unlock; + } + + dfops = container_of(debugfs_real_fops(file), + struct b43legacy_debugfs_fops, fops); + if (!dfops->write) { + err = -ENOSYS; + goto out_unlock; + } + + buf = (char *)get_zeroed_page(GFP_KERNEL); + if (!buf) { + err = -ENOMEM; + goto out_unlock; + } + if (copy_from_user(buf, userbuf, count)) { + err = -EFAULT; + goto out_freepage; + } + if (dfops->take_irqlock) { + spin_lock_irq(&dev->wl->irq_lock); + err = dfops->write(dev, buf, count); + spin_unlock_irq(&dev->wl->irq_lock); + } else + err = dfops->write(dev, buf, count); + if (err) + goto out_freepage; + +out_freepage: + free_page((unsigned long)buf); +out_unlock: + mutex_unlock(&dev->wl->mutex); + + return err ? err : count; +} + + +#define B43legacy_DEBUGFS_FOPS(name, _read, _write, _take_irqlock) \ + static struct b43legacy_debugfs_fops fops_##name = { \ + .read = _read, \ + .write = _write, \ + .fops = { \ + .open = simple_open, \ + .read = b43legacy_debugfs_read, \ + .write = b43legacy_debugfs_write, \ + .llseek = generic_file_llseek, \ + }, \ + .file_struct_offset = offsetof(struct b43legacy_dfsentry, \ + file_##name), \ + .take_irqlock = _take_irqlock, \ + } + +B43legacy_DEBUGFS_FOPS(tsf, tsf_read_file, tsf_write_file, 1); +B43legacy_DEBUGFS_FOPS(ucode_regs, ucode_regs_read_file, NULL, 1); +B43legacy_DEBUGFS_FOPS(shm, shm_read_file, NULL, 1); +B43legacy_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0); +B43legacy_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1); + + +int b43legacy_debug(struct b43legacy_wldev *dev, enum b43legacy_dyndbg feature) +{ + return !!(dev->dfsentry && dev->dfsentry->dyn_debug[feature]); +} + +static void b43legacy_remove_dynamic_debug(struct b43legacy_wldev *dev) +{ + struct b43legacy_dfsentry *e = dev->dfsentry; + int i; + + for (i = 0; i < __B43legacy_NR_DYNDBG; i++) + debugfs_remove(e->dyn_debug_dentries[i]); +} + +static void b43legacy_add_dynamic_debug(struct b43legacy_wldev *dev) +{ + struct b43legacy_dfsentry *e = dev->dfsentry; + +#define add_dyn_dbg(name, id, initstate) do { \ + e->dyn_debug[id] = (initstate); \ + e->dyn_debug_dentries[id] = \ + debugfs_create_bool(name, 0600, e->subdir, \ + &(e->dyn_debug[id])); \ + } while (0) + + add_dyn_dbg("debug_xmitpower", B43legacy_DBG_XMITPOWER, false); + add_dyn_dbg("debug_dmaoverflow", B43legacy_DBG_DMAOVERFLOW, false); + add_dyn_dbg("debug_dmaverbose", B43legacy_DBG_DMAVERBOSE, false); + add_dyn_dbg("debug_pwork_fast", B43legacy_DBG_PWORK_FAST, false); + add_dyn_dbg("debug_pwork_stop", B43legacy_DBG_PWORK_STOP, false); + +#undef add_dyn_dbg +} + +void b43legacy_debugfs_add_device(struct b43legacy_wldev *dev) +{ + struct b43legacy_dfsentry *e; + struct b43legacy_txstatus_log *log; + char devdir[16]; + + B43legacy_WARN_ON(!dev); + e = kzalloc(sizeof(*e), GFP_KERNEL); + if (!e) { + b43legacyerr(dev->wl, "debugfs: add device OOM\n"); + return; + } + e->dev = dev; + log = &e->txstatlog; + log->log = kcalloc(B43legacy_NR_LOGGED_TXSTATUS, + sizeof(struct b43legacy_txstatus), GFP_KERNEL); + if (!log->log) { + b43legacyerr(dev->wl, "debugfs: add device txstatus OOM\n"); + kfree(e); + return; + } + log->end = -1; + spin_lock_init(&log->lock); + + dev->dfsentry = e; + + snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy)); + e->subdir = debugfs_create_dir(devdir, rootdir); + +#define ADD_FILE(name, mode) \ + do { \ + e->file_##name.dentry = \ + debugfs_create_file(__stringify(name), \ + mode, e->subdir, dev, \ + &fops_##name.fops); \ + e->file_##name.dentry = NULL; \ + } while (0) + + + ADD_FILE(tsf, 0600); + ADD_FILE(ucode_regs, 0400); + ADD_FILE(shm, 0400); + ADD_FILE(txstat, 0400); + ADD_FILE(restart, 0200); + +#undef ADD_FILE + + b43legacy_add_dynamic_debug(dev); +} + +void b43legacy_debugfs_remove_device(struct b43legacy_wldev *dev) +{ + struct b43legacy_dfsentry *e; + + if (!dev) + return; + e = dev->dfsentry; + if (!e) + return; + b43legacy_remove_dynamic_debug(dev); + + debugfs_remove(e->file_tsf.dentry); + debugfs_remove(e->file_ucode_regs.dentry); + debugfs_remove(e->file_shm.dentry); + debugfs_remove(e->file_txstat.dentry); + debugfs_remove(e->file_restart.dentry); + + debugfs_remove(e->subdir); + kfree(e->txstatlog.log); + kfree(e); +} + +void b43legacy_debugfs_log_txstat(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status) +{ + struct b43legacy_dfsentry *e = dev->dfsentry; + struct b43legacy_txstatus_log *log; + struct b43legacy_txstatus *cur; + int i; + + if (!e) + return; + log = &e->txstatlog; + B43legacy_WARN_ON(!irqs_disabled()); + spin_lock(&log->lock); + i = log->end + 1; + if (i == B43legacy_NR_LOGGED_TXSTATUS) + i = 0; + log->end = i; + cur = &(log->log[i]); + memcpy(cur, status, sizeof(*cur)); + spin_unlock(&log->lock); +} + +void b43legacy_debugfs_init(void) +{ + rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL); +} + +void b43legacy_debugfs_exit(void) +{ + debugfs_remove(rootdir); +} diff --git a/drivers/net/wireless/broadcom/b43legacy/debugfs.h b/drivers/net/wireless/broadcom/b43legacy/debugfs.h new file mode 100644 index 000000000..7a3776440 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/debugfs.h @@ -0,0 +1,90 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_DEBUGFS_H_ +#define B43legacy_DEBUGFS_H_ + +struct b43legacy_wldev; +struct b43legacy_txstatus; + +enum b43legacy_dyndbg { /* Dynamic debugging features */ + B43legacy_DBG_XMITPOWER, + B43legacy_DBG_DMAOVERFLOW, + B43legacy_DBG_DMAVERBOSE, + B43legacy_DBG_PWORK_FAST, + B43legacy_DBG_PWORK_STOP, + __B43legacy_NR_DYNDBG, +}; + + +#ifdef CONFIG_B43LEGACY_DEBUG + +struct dentry; + +#define B43legacy_NR_LOGGED_TXSTATUS 100 + +struct b43legacy_txstatus_log { + struct b43legacy_txstatus *log; + int end; + spinlock_t lock; /* lock for debugging */ +}; + +struct b43legacy_dfs_file { + struct dentry *dentry; + char *buffer; + size_t data_len; +}; + +struct b43legacy_dfsentry { + struct b43legacy_wldev *dev; + struct dentry *subdir; + + struct b43legacy_dfs_file file_tsf; + struct b43legacy_dfs_file file_ucode_regs; + struct b43legacy_dfs_file file_shm; + struct b43legacy_dfs_file file_txstat; + struct b43legacy_dfs_file file_txpower_g; + struct b43legacy_dfs_file file_restart; + struct b43legacy_dfs_file file_loctls; + + struct b43legacy_txstatus_log txstatlog; + + /* Enabled/Disabled list for the dynamic debugging features. */ + bool dyn_debug[__B43legacy_NR_DYNDBG]; + /* Dentries for the dynamic debugging entries. */ + struct dentry *dyn_debug_dentries[__B43legacy_NR_DYNDBG]; +}; + +int b43legacy_debug(struct b43legacy_wldev *dev, + enum b43legacy_dyndbg feature); + +void b43legacy_debugfs_init(void); +void b43legacy_debugfs_exit(void); +void b43legacy_debugfs_add_device(struct b43legacy_wldev *dev); +void b43legacy_debugfs_remove_device(struct b43legacy_wldev *dev); +void b43legacy_debugfs_log_txstat(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status); + +#else /* CONFIG_B43LEGACY_DEBUG*/ + +static inline +int b43legacy_debug(struct b43legacy_wldev *dev, + enum b43legacy_dyndbg feature) +{ + return 0; +} + +static inline +void b43legacy_debugfs_init(void) { } +static inline +void b43legacy_debugfs_exit(void) { } +static inline +void b43legacy_debugfs_add_device(struct b43legacy_wldev *dev) { } +static inline +void b43legacy_debugfs_remove_device(struct b43legacy_wldev *dev) { } +static inline +void b43legacy_debugfs_log_txstat(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status) + { } + +#endif /* CONFIG_B43LEGACY_DEBUG*/ + +#endif /* B43legacy_DEBUGFS_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/dma.c b/drivers/net/wireless/broadcom/b43legacy/dma.c new file mode 100644 index 000000000..7e2f70c42 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/dma.c @@ -0,0 +1,1391 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + DMA ringbuffer and descriptor allocation/management + + Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch> + + Some code in this file is derived from the b44.c driver + Copyright (C) 2002 David S. Miller + Copyright (C) Pekka Pietikainen + + +*/ + +#include "b43legacy.h" +#include "dma.h" +#include "main.h" +#include "debugfs.h" +#include "xmit.h" + +#include <linux/dma-mapping.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/skbuff.h> +#include <linux/slab.h> +#include <net/dst.h> + +/* 32bit DMA ops. */ +static +struct b43legacy_dmadesc32 *op32_idx2desc(struct b43legacy_dmaring *ring, + int slot, + struct b43legacy_dmadesc_meta **meta) +{ + struct b43legacy_dmadesc32 *desc; + + *meta = &(ring->meta[slot]); + desc = ring->descbase; + desc = &(desc[slot]); + + return desc; +} + +static void op32_fill_descriptor(struct b43legacy_dmaring *ring, + struct b43legacy_dmadesc32 *desc, + dma_addr_t dmaaddr, u16 bufsize, + int start, int end, int irq) +{ + struct b43legacy_dmadesc32 *descbase = ring->descbase; + int slot; + u32 ctl; + u32 addr; + u32 addrext; + + slot = (int)(desc - descbase); + B43legacy_WARN_ON(!(slot >= 0 && slot < ring->nr_slots)); + + addr = (u32)(dmaaddr & ~SSB_DMA_TRANSLATION_MASK); + addrext = (u32)(dmaaddr & SSB_DMA_TRANSLATION_MASK) + >> SSB_DMA_TRANSLATION_SHIFT; + addr |= ring->dev->dma.translation; + ctl = (bufsize - ring->frameoffset) + & B43legacy_DMA32_DCTL_BYTECNT; + if (slot == ring->nr_slots - 1) + ctl |= B43legacy_DMA32_DCTL_DTABLEEND; + if (start) + ctl |= B43legacy_DMA32_DCTL_FRAMESTART; + if (end) + ctl |= B43legacy_DMA32_DCTL_FRAMEEND; + if (irq) + ctl |= B43legacy_DMA32_DCTL_IRQ; + ctl |= (addrext << B43legacy_DMA32_DCTL_ADDREXT_SHIFT) + & B43legacy_DMA32_DCTL_ADDREXT_MASK; + + desc->control = cpu_to_le32(ctl); + desc->address = cpu_to_le32(addr); +} + +static void op32_poke_tx(struct b43legacy_dmaring *ring, int slot) +{ + b43legacy_dma_write(ring, B43legacy_DMA32_TXINDEX, + (u32)(slot * sizeof(struct b43legacy_dmadesc32))); +} + +static void op32_tx_suspend(struct b43legacy_dmaring *ring) +{ + b43legacy_dma_write(ring, B43legacy_DMA32_TXCTL, + b43legacy_dma_read(ring, B43legacy_DMA32_TXCTL) + | B43legacy_DMA32_TXSUSPEND); +} + +static void op32_tx_resume(struct b43legacy_dmaring *ring) +{ + b43legacy_dma_write(ring, B43legacy_DMA32_TXCTL, + b43legacy_dma_read(ring, B43legacy_DMA32_TXCTL) + & ~B43legacy_DMA32_TXSUSPEND); +} + +static int op32_get_current_rxslot(struct b43legacy_dmaring *ring) +{ + u32 val; + + val = b43legacy_dma_read(ring, B43legacy_DMA32_RXSTATUS); + val &= B43legacy_DMA32_RXDPTR; + + return (val / sizeof(struct b43legacy_dmadesc32)); +} + +static void op32_set_current_rxslot(struct b43legacy_dmaring *ring, + int slot) +{ + b43legacy_dma_write(ring, B43legacy_DMA32_RXINDEX, + (u32)(slot * sizeof(struct b43legacy_dmadesc32))); +} + +static inline int free_slots(struct b43legacy_dmaring *ring) +{ + return (ring->nr_slots - ring->used_slots); +} + +static inline int next_slot(struct b43legacy_dmaring *ring, int slot) +{ + B43legacy_WARN_ON(!(slot >= -1 && slot <= ring->nr_slots - 1)); + if (slot == ring->nr_slots - 1) + return 0; + return slot + 1; +} + +static inline int prev_slot(struct b43legacy_dmaring *ring, int slot) +{ + B43legacy_WARN_ON(!(slot >= 0 && slot <= ring->nr_slots - 1)); + if (slot == 0) + return ring->nr_slots - 1; + return slot - 1; +} + +#ifdef CONFIG_B43LEGACY_DEBUG +static void update_max_used_slots(struct b43legacy_dmaring *ring, + int current_used_slots) +{ + if (current_used_slots <= ring->max_used_slots) + return; + ring->max_used_slots = current_used_slots; + if (b43legacy_debug(ring->dev, B43legacy_DBG_DMAVERBOSE)) + b43legacydbg(ring->dev->wl, + "max_used_slots increased to %d on %s ring %d\n", + ring->max_used_slots, + ring->tx ? "TX" : "RX", + ring->index); +} +#else +static inline +void update_max_used_slots(struct b43legacy_dmaring *ring, + int current_used_slots) +{ } +#endif /* DEBUG */ + +/* Request a slot for usage. */ +static inline +int request_slot(struct b43legacy_dmaring *ring) +{ + int slot; + + B43legacy_WARN_ON(!ring->tx); + B43legacy_WARN_ON(ring->stopped); + B43legacy_WARN_ON(free_slots(ring) == 0); + + slot = next_slot(ring, ring->current_slot); + ring->current_slot = slot; + ring->used_slots++; + + update_max_used_slots(ring, ring->used_slots); + + return slot; +} + +/* Mac80211-queue to b43legacy-ring mapping */ +static struct b43legacy_dmaring *priority_to_txring( + struct b43legacy_wldev *dev, + int queue_priority) +{ + struct b43legacy_dmaring *ring; + +/*FIXME: For now we always run on TX-ring-1 */ +return dev->dma.tx_ring1; + + /* 0 = highest priority */ + switch (queue_priority) { + default: + B43legacy_WARN_ON(1); + fallthrough; + case 0: + ring = dev->dma.tx_ring3; + break; + case 1: + ring = dev->dma.tx_ring2; + break; + case 2: + ring = dev->dma.tx_ring1; + break; + case 3: + ring = dev->dma.tx_ring0; + break; + case 4: + ring = dev->dma.tx_ring4; + break; + case 5: + ring = dev->dma.tx_ring5; + break; + } + + return ring; +} + +/* Bcm4301-ring to mac80211-queue mapping */ +static inline int txring_to_priority(struct b43legacy_dmaring *ring) +{ + static const u8 idx_to_prio[] = + { 3, 2, 1, 0, 4, 5, }; + +/*FIXME: have only one queue, for now */ +return 0; + + return idx_to_prio[ring->index]; +} + + +static u16 b43legacy_dmacontroller_base(enum b43legacy_dmatype type, + int controller_idx) +{ + static const u16 map32[] = { + B43legacy_MMIO_DMA32_BASE0, + B43legacy_MMIO_DMA32_BASE1, + B43legacy_MMIO_DMA32_BASE2, + B43legacy_MMIO_DMA32_BASE3, + B43legacy_MMIO_DMA32_BASE4, + B43legacy_MMIO_DMA32_BASE5, + }; + + B43legacy_WARN_ON(!(controller_idx >= 0 && + controller_idx < ARRAY_SIZE(map32))); + return map32[controller_idx]; +} + +static inline +dma_addr_t map_descbuffer(struct b43legacy_dmaring *ring, + unsigned char *buf, + size_t len, + int tx) +{ + dma_addr_t dmaaddr; + + if (tx) + dmaaddr = dma_map_single(ring->dev->dev->dma_dev, + buf, len, + DMA_TO_DEVICE); + else + dmaaddr = dma_map_single(ring->dev->dev->dma_dev, + buf, len, + DMA_FROM_DEVICE); + + return dmaaddr; +} + +static inline +void unmap_descbuffer(struct b43legacy_dmaring *ring, + dma_addr_t addr, + size_t len, + int tx) +{ + if (tx) + dma_unmap_single(ring->dev->dev->dma_dev, + addr, len, + DMA_TO_DEVICE); + else + dma_unmap_single(ring->dev->dev->dma_dev, + addr, len, + DMA_FROM_DEVICE); +} + +static inline +void sync_descbuffer_for_cpu(struct b43legacy_dmaring *ring, + dma_addr_t addr, + size_t len) +{ + B43legacy_WARN_ON(ring->tx); + + dma_sync_single_for_cpu(ring->dev->dev->dma_dev, + addr, len, DMA_FROM_DEVICE); +} + +static inline +void sync_descbuffer_for_device(struct b43legacy_dmaring *ring, + dma_addr_t addr, + size_t len) +{ + B43legacy_WARN_ON(ring->tx); + + dma_sync_single_for_device(ring->dev->dev->dma_dev, + addr, len, DMA_FROM_DEVICE); +} + +static inline +void free_descriptor_buffer(struct b43legacy_dmaring *ring, + struct b43legacy_dmadesc_meta *meta, + int irq_context) +{ + if (meta->skb) { + if (irq_context) + dev_kfree_skb_irq(meta->skb); + else + dev_kfree_skb(meta->skb); + meta->skb = NULL; + } +} + +static int alloc_ringmemory(struct b43legacy_dmaring *ring) +{ + /* GFP flags must match the flags in free_ringmemory()! */ + ring->descbase = dma_alloc_coherent(ring->dev->dev->dma_dev, + B43legacy_DMA_RINGMEMSIZE, + &(ring->dmabase), GFP_KERNEL); + if (!ring->descbase) + return -ENOMEM; + + return 0; +} + +static void free_ringmemory(struct b43legacy_dmaring *ring) +{ + dma_free_coherent(ring->dev->dev->dma_dev, B43legacy_DMA_RINGMEMSIZE, + ring->descbase, ring->dmabase); +} + +/* Reset the RX DMA channel */ +static int b43legacy_dmacontroller_rx_reset(struct b43legacy_wldev *dev, + u16 mmio_base, + enum b43legacy_dmatype type) +{ + int i; + u32 value; + u16 offset; + + might_sleep(); + + offset = B43legacy_DMA32_RXCTL; + b43legacy_write32(dev, mmio_base + offset, 0); + for (i = 0; i < 10; i++) { + offset = B43legacy_DMA32_RXSTATUS; + value = b43legacy_read32(dev, mmio_base + offset); + value &= B43legacy_DMA32_RXSTATE; + if (value == B43legacy_DMA32_RXSTAT_DISABLED) { + i = -1; + break; + } + msleep(1); + } + if (i != -1) { + b43legacyerr(dev->wl, "DMA RX reset timed out\n"); + return -ENODEV; + } + + return 0; +} + +/* Reset the RX DMA channel */ +static int b43legacy_dmacontroller_tx_reset(struct b43legacy_wldev *dev, + u16 mmio_base, + enum b43legacy_dmatype type) +{ + int i; + u32 value; + u16 offset; + + might_sleep(); + + for (i = 0; i < 10; i++) { + offset = B43legacy_DMA32_TXSTATUS; + value = b43legacy_read32(dev, mmio_base + offset); + value &= B43legacy_DMA32_TXSTATE; + if (value == B43legacy_DMA32_TXSTAT_DISABLED || + value == B43legacy_DMA32_TXSTAT_IDLEWAIT || + value == B43legacy_DMA32_TXSTAT_STOPPED) + break; + msleep(1); + } + offset = B43legacy_DMA32_TXCTL; + b43legacy_write32(dev, mmio_base + offset, 0); + for (i = 0; i < 10; i++) { + offset = B43legacy_DMA32_TXSTATUS; + value = b43legacy_read32(dev, mmio_base + offset); + value &= B43legacy_DMA32_TXSTATE; + if (value == B43legacy_DMA32_TXSTAT_DISABLED) { + i = -1; + break; + } + msleep(1); + } + if (i != -1) { + b43legacyerr(dev->wl, "DMA TX reset timed out\n"); + return -ENODEV; + } + /* ensure the reset is completed. */ + msleep(1); + + return 0; +} + +/* Check if a DMA mapping address is invalid. */ +static bool b43legacy_dma_mapping_error(struct b43legacy_dmaring *ring, + dma_addr_t addr, + size_t buffersize, + bool dma_to_device) +{ + if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr))) + return true; + + switch (ring->type) { + case B43legacy_DMA_30BIT: + if ((u64)addr + buffersize > (1ULL << 30)) + goto address_error; + break; + case B43legacy_DMA_32BIT: + if ((u64)addr + buffersize > (1ULL << 32)) + goto address_error; + break; + } + + /* The address is OK. */ + return false; + +address_error: + /* We can't support this address. Unmap it again. */ + unmap_descbuffer(ring, addr, buffersize, dma_to_device); + + return true; +} + +static int setup_rx_descbuffer(struct b43legacy_dmaring *ring, + struct b43legacy_dmadesc32 *desc, + struct b43legacy_dmadesc_meta *meta, + gfp_t gfp_flags) +{ + struct b43legacy_rxhdr_fw3 *rxhdr; + struct b43legacy_hwtxstatus *txstat; + dma_addr_t dmaaddr; + struct sk_buff *skb; + + B43legacy_WARN_ON(ring->tx); + + skb = __dev_alloc_skb(ring->rx_buffersize, gfp_flags); + if (unlikely(!skb)) + return -ENOMEM; + dmaaddr = map_descbuffer(ring, skb->data, + ring->rx_buffersize, 0); + if (b43legacy_dma_mapping_error(ring, dmaaddr, ring->rx_buffersize, 0)) { + /* ugh. try to realloc in zone_dma */ + gfp_flags |= GFP_DMA; + + dev_kfree_skb_any(skb); + + skb = __dev_alloc_skb(ring->rx_buffersize, gfp_flags); + if (unlikely(!skb)) + return -ENOMEM; + dmaaddr = map_descbuffer(ring, skb->data, + ring->rx_buffersize, 0); + } + + if (b43legacy_dma_mapping_error(ring, dmaaddr, ring->rx_buffersize, 0)) { + dev_kfree_skb_any(skb); + return -EIO; + } + + meta->skb = skb; + meta->dmaaddr = dmaaddr; + op32_fill_descriptor(ring, desc, dmaaddr, ring->rx_buffersize, 0, 0, 0); + + rxhdr = (struct b43legacy_rxhdr_fw3 *)(skb->data); + rxhdr->frame_len = 0; + txstat = (struct b43legacy_hwtxstatus *)(skb->data); + txstat->cookie = 0; + + return 0; +} + +/* Allocate the initial descbuffers. + * This is used for an RX ring only. + */ +static int alloc_initial_descbuffers(struct b43legacy_dmaring *ring) +{ + int i; + int err = -ENOMEM; + struct b43legacy_dmadesc32 *desc; + struct b43legacy_dmadesc_meta *meta; + + for (i = 0; i < ring->nr_slots; i++) { + desc = op32_idx2desc(ring, i, &meta); + + err = setup_rx_descbuffer(ring, desc, meta, GFP_KERNEL); + if (err) { + b43legacyerr(ring->dev->wl, + "Failed to allocate initial descbuffers\n"); + goto err_unwind; + } + } + mb(); /* all descbuffer setup before next line */ + ring->used_slots = ring->nr_slots; + err = 0; +out: + return err; + +err_unwind: + for (i--; i >= 0; i--) { + desc = op32_idx2desc(ring, i, &meta); + + unmap_descbuffer(ring, meta->dmaaddr, ring->rx_buffersize, 0); + dev_kfree_skb(meta->skb); + } + goto out; +} + +/* Do initial setup of the DMA controller. + * Reset the controller, write the ring busaddress + * and switch the "enable" bit on. + */ +static int dmacontroller_setup(struct b43legacy_dmaring *ring) +{ + int err = 0; + u32 value; + u32 addrext; + u32 trans = ring->dev->dma.translation; + u32 ringbase = (u32)(ring->dmabase); + + if (ring->tx) { + addrext = (ringbase & SSB_DMA_TRANSLATION_MASK) + >> SSB_DMA_TRANSLATION_SHIFT; + value = B43legacy_DMA32_TXENABLE; + value |= (addrext << B43legacy_DMA32_TXADDREXT_SHIFT) + & B43legacy_DMA32_TXADDREXT_MASK; + b43legacy_dma_write(ring, B43legacy_DMA32_TXCTL, value); + b43legacy_dma_write(ring, B43legacy_DMA32_TXRING, + (ringbase & ~SSB_DMA_TRANSLATION_MASK) + | trans); + } else { + err = alloc_initial_descbuffers(ring); + if (err) + goto out; + + addrext = (ringbase & SSB_DMA_TRANSLATION_MASK) + >> SSB_DMA_TRANSLATION_SHIFT; + value = (ring->frameoffset << + B43legacy_DMA32_RXFROFF_SHIFT); + value |= B43legacy_DMA32_RXENABLE; + value |= (addrext << B43legacy_DMA32_RXADDREXT_SHIFT) + & B43legacy_DMA32_RXADDREXT_MASK; + b43legacy_dma_write(ring, B43legacy_DMA32_RXCTL, value); + b43legacy_dma_write(ring, B43legacy_DMA32_RXRING, + (ringbase & ~SSB_DMA_TRANSLATION_MASK) + | trans); + b43legacy_dma_write(ring, B43legacy_DMA32_RXINDEX, 200); + } + +out: + return err; +} + +/* Shutdown the DMA controller. */ +static void dmacontroller_cleanup(struct b43legacy_dmaring *ring) +{ + if (ring->tx) { + b43legacy_dmacontroller_tx_reset(ring->dev, ring->mmio_base, + ring->type); + b43legacy_dma_write(ring, B43legacy_DMA32_TXRING, 0); + } else { + b43legacy_dmacontroller_rx_reset(ring->dev, ring->mmio_base, + ring->type); + b43legacy_dma_write(ring, B43legacy_DMA32_RXRING, 0); + } +} + +static void free_all_descbuffers(struct b43legacy_dmaring *ring) +{ + struct b43legacy_dmadesc_meta *meta; + int i; + + if (!ring->used_slots) + return; + for (i = 0; i < ring->nr_slots; i++) { + op32_idx2desc(ring, i, &meta); + + if (!meta->skb) { + B43legacy_WARN_ON(!ring->tx); + continue; + } + if (ring->tx) + unmap_descbuffer(ring, meta->dmaaddr, + meta->skb->len, 1); + else + unmap_descbuffer(ring, meta->dmaaddr, + ring->rx_buffersize, 0); + free_descriptor_buffer(ring, meta, 0); + } +} + +static enum b43legacy_dmatype b43legacy_engine_type(struct b43legacy_wldev *dev) +{ + u32 tmp; + u16 mmio_base; + + mmio_base = b43legacy_dmacontroller_base(0, 0); + b43legacy_write32(dev, + mmio_base + B43legacy_DMA32_TXCTL, + B43legacy_DMA32_TXADDREXT_MASK); + tmp = b43legacy_read32(dev, mmio_base + + B43legacy_DMA32_TXCTL); + if (tmp & B43legacy_DMA32_TXADDREXT_MASK) + return B43legacy_DMA_32BIT; + return B43legacy_DMA_30BIT; +} + +/* Main initialization function. */ +static +struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev, + int controller_index, + int for_tx, + enum b43legacy_dmatype type) +{ + struct b43legacy_dmaring *ring; + int err; + int nr_slots; + dma_addr_t dma_test; + + ring = kzalloc(sizeof(*ring), GFP_KERNEL); + if (!ring) + goto out; + ring->type = type; + ring->dev = dev; + + nr_slots = B43legacy_RXRING_SLOTS; + if (for_tx) + nr_slots = B43legacy_TXRING_SLOTS; + + ring->meta = kcalloc(nr_slots, sizeof(struct b43legacy_dmadesc_meta), + GFP_KERNEL); + if (!ring->meta) + goto err_kfree_ring; + if (for_tx) { + ring->txhdr_cache = kcalloc(nr_slots, + sizeof(struct b43legacy_txhdr_fw3), + GFP_KERNEL); + if (!ring->txhdr_cache) + goto err_kfree_meta; + + /* test for ability to dma to txhdr_cache */ + dma_test = dma_map_single(dev->dev->dma_dev, ring->txhdr_cache, + sizeof(struct b43legacy_txhdr_fw3), + DMA_TO_DEVICE); + + if (b43legacy_dma_mapping_error(ring, dma_test, + sizeof(struct b43legacy_txhdr_fw3), 1)) { + /* ugh realloc */ + kfree(ring->txhdr_cache); + ring->txhdr_cache = kcalloc(nr_slots, + sizeof(struct b43legacy_txhdr_fw3), + GFP_KERNEL | GFP_DMA); + if (!ring->txhdr_cache) + goto err_kfree_meta; + + dma_test = dma_map_single(dev->dev->dma_dev, + ring->txhdr_cache, + sizeof(struct b43legacy_txhdr_fw3), + DMA_TO_DEVICE); + + if (b43legacy_dma_mapping_error(ring, dma_test, + sizeof(struct b43legacy_txhdr_fw3), 1)) + goto err_kfree_txhdr_cache; + } + + dma_unmap_single(dev->dev->dma_dev, dma_test, + sizeof(struct b43legacy_txhdr_fw3), + DMA_TO_DEVICE); + } + + ring->nr_slots = nr_slots; + ring->mmio_base = b43legacy_dmacontroller_base(type, controller_index); + ring->index = controller_index; + if (for_tx) { + ring->tx = true; + ring->current_slot = -1; + } else { + if (ring->index == 0) { + ring->rx_buffersize = B43legacy_DMA0_RX_BUFFERSIZE; + ring->frameoffset = B43legacy_DMA0_RX_FRAMEOFFSET; + } else if (ring->index == 3) { + ring->rx_buffersize = B43legacy_DMA3_RX_BUFFERSIZE; + ring->frameoffset = B43legacy_DMA3_RX_FRAMEOFFSET; + } else + B43legacy_WARN_ON(1); + } +#ifdef CONFIG_B43LEGACY_DEBUG + ring->last_injected_overflow = jiffies; +#endif + + err = alloc_ringmemory(ring); + if (err) + goto err_kfree_txhdr_cache; + err = dmacontroller_setup(ring); + if (err) + goto err_free_ringmemory; + +out: + return ring; + +err_free_ringmemory: + free_ringmemory(ring); +err_kfree_txhdr_cache: + kfree(ring->txhdr_cache); +err_kfree_meta: + kfree(ring->meta); +err_kfree_ring: + kfree(ring); + ring = NULL; + goto out; +} + +/* Main cleanup function. */ +static void b43legacy_destroy_dmaring(struct b43legacy_dmaring *ring) +{ + if (!ring) + return; + + b43legacydbg(ring->dev->wl, "DMA-%u 0x%04X (%s) max used slots:" + " %d/%d\n", (unsigned int)(ring->type), ring->mmio_base, + (ring->tx) ? "TX" : "RX", ring->max_used_slots, + ring->nr_slots); + /* Device IRQs are disabled prior entering this function, + * so no need to take care of concurrency with rx handler stuff. + */ + dmacontroller_cleanup(ring); + free_all_descbuffers(ring); + free_ringmemory(ring); + + kfree(ring->txhdr_cache); + kfree(ring->meta); + kfree(ring); +} + +void b43legacy_dma_free(struct b43legacy_wldev *dev) +{ + struct b43legacy_dma *dma; + + if (b43legacy_using_pio(dev)) + return; + dma = &dev->dma; + + b43legacy_destroy_dmaring(dma->rx_ring3); + dma->rx_ring3 = NULL; + b43legacy_destroy_dmaring(dma->rx_ring0); + dma->rx_ring0 = NULL; + + b43legacy_destroy_dmaring(dma->tx_ring5); + dma->tx_ring5 = NULL; + b43legacy_destroy_dmaring(dma->tx_ring4); + dma->tx_ring4 = NULL; + b43legacy_destroy_dmaring(dma->tx_ring3); + dma->tx_ring3 = NULL; + b43legacy_destroy_dmaring(dma->tx_ring2); + dma->tx_ring2 = NULL; + b43legacy_destroy_dmaring(dma->tx_ring1); + dma->tx_ring1 = NULL; + b43legacy_destroy_dmaring(dma->tx_ring0); + dma->tx_ring0 = NULL; +} + +int b43legacy_dma_init(struct b43legacy_wldev *dev) +{ + struct b43legacy_dma *dma = &dev->dma; + struct b43legacy_dmaring *ring; + enum b43legacy_dmatype type = b43legacy_engine_type(dev); + int err; + + err = dma_set_mask_and_coherent(dev->dev->dma_dev, DMA_BIT_MASK(type)); + if (err) { +#ifdef CONFIG_B43LEGACY_PIO + b43legacywarn(dev->wl, "DMA for this device not supported. " + "Falling back to PIO\n"); + dev->__using_pio = true; + return -EAGAIN; +#else + b43legacyerr(dev->wl, "DMA for this device not supported and " + "no PIO support compiled in\n"); + return -EOPNOTSUPP; +#endif + } + dma->translation = ssb_dma_translation(dev->dev); + + err = -ENOMEM; + /* setup TX DMA channels. */ + ring = b43legacy_setup_dmaring(dev, 0, 1, type); + if (!ring) + goto out; + dma->tx_ring0 = ring; + + ring = b43legacy_setup_dmaring(dev, 1, 1, type); + if (!ring) + goto err_destroy_tx0; + dma->tx_ring1 = ring; + + ring = b43legacy_setup_dmaring(dev, 2, 1, type); + if (!ring) + goto err_destroy_tx1; + dma->tx_ring2 = ring; + + ring = b43legacy_setup_dmaring(dev, 3, 1, type); + if (!ring) + goto err_destroy_tx2; + dma->tx_ring3 = ring; + + ring = b43legacy_setup_dmaring(dev, 4, 1, type); + if (!ring) + goto err_destroy_tx3; + dma->tx_ring4 = ring; + + ring = b43legacy_setup_dmaring(dev, 5, 1, type); + if (!ring) + goto err_destroy_tx4; + dma->tx_ring5 = ring; + + /* setup RX DMA channels. */ + ring = b43legacy_setup_dmaring(dev, 0, 0, type); + if (!ring) + goto err_destroy_tx5; + dma->rx_ring0 = ring; + + if (dev->dev->id.revision < 5) { + ring = b43legacy_setup_dmaring(dev, 3, 0, type); + if (!ring) + goto err_destroy_rx0; + dma->rx_ring3 = ring; + } + + b43legacydbg(dev->wl, "%u-bit DMA initialized\n", (unsigned int)type); + err = 0; +out: + return err; + +err_destroy_rx0: + b43legacy_destroy_dmaring(dma->rx_ring0); + dma->rx_ring0 = NULL; +err_destroy_tx5: + b43legacy_destroy_dmaring(dma->tx_ring5); + dma->tx_ring5 = NULL; +err_destroy_tx4: + b43legacy_destroy_dmaring(dma->tx_ring4); + dma->tx_ring4 = NULL; +err_destroy_tx3: + b43legacy_destroy_dmaring(dma->tx_ring3); + dma->tx_ring3 = NULL; +err_destroy_tx2: + b43legacy_destroy_dmaring(dma->tx_ring2); + dma->tx_ring2 = NULL; +err_destroy_tx1: + b43legacy_destroy_dmaring(dma->tx_ring1); + dma->tx_ring1 = NULL; +err_destroy_tx0: + b43legacy_destroy_dmaring(dma->tx_ring0); + dma->tx_ring0 = NULL; + goto out; +} + +/* Generate a cookie for the TX header. */ +static u16 generate_cookie(struct b43legacy_dmaring *ring, + int slot) +{ + u16 cookie = 0x1000; + + /* Use the upper 4 bits of the cookie as + * DMA controller ID and store the slot number + * in the lower 12 bits. + * Note that the cookie must never be 0, as this + * is a special value used in RX path. + */ + switch (ring->index) { + case 0: + cookie = 0xA000; + break; + case 1: + cookie = 0xB000; + break; + case 2: + cookie = 0xC000; + break; + case 3: + cookie = 0xD000; + break; + case 4: + cookie = 0xE000; + break; + case 5: + cookie = 0xF000; + break; + } + B43legacy_WARN_ON(!(((u16)slot & 0xF000) == 0x0000)); + cookie |= (u16)slot; + + return cookie; +} + +/* Inspect a cookie and find out to which controller/slot it belongs. */ +static +struct b43legacy_dmaring *parse_cookie(struct b43legacy_wldev *dev, + u16 cookie, int *slot) +{ + struct b43legacy_dma *dma = &dev->dma; + struct b43legacy_dmaring *ring = NULL; + + switch (cookie & 0xF000) { + case 0xA000: + ring = dma->tx_ring0; + break; + case 0xB000: + ring = dma->tx_ring1; + break; + case 0xC000: + ring = dma->tx_ring2; + break; + case 0xD000: + ring = dma->tx_ring3; + break; + case 0xE000: + ring = dma->tx_ring4; + break; + case 0xF000: + ring = dma->tx_ring5; + break; + default: + B43legacy_WARN_ON(1); + } + *slot = (cookie & 0x0FFF); + B43legacy_WARN_ON(!(ring && *slot >= 0 && *slot < ring->nr_slots)); + + return ring; +} + +static int dma_tx_fragment(struct b43legacy_dmaring *ring, + struct sk_buff **in_skb) +{ + struct sk_buff *skb = *in_skb; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + u8 *header; + int slot, old_top_slot, old_used_slots; + int err; + struct b43legacy_dmadesc32 *desc; + struct b43legacy_dmadesc_meta *meta; + struct b43legacy_dmadesc_meta *meta_hdr; + struct sk_buff *bounce_skb; + +#define SLOTS_PER_PACKET 2 + B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags != 0); + + old_top_slot = ring->current_slot; + old_used_slots = ring->used_slots; + + /* Get a slot for the header. */ + slot = request_slot(ring); + desc = op32_idx2desc(ring, slot, &meta_hdr); + memset(meta_hdr, 0, sizeof(*meta_hdr)); + + header = &(ring->txhdr_cache[slot * sizeof( + struct b43legacy_txhdr_fw3)]); + err = b43legacy_generate_txhdr(ring->dev, header, + skb->data, skb->len, info, + generate_cookie(ring, slot)); + if (unlikely(err)) { + ring->current_slot = old_top_slot; + ring->used_slots = old_used_slots; + return err; + } + + meta_hdr->dmaaddr = map_descbuffer(ring, (unsigned char *)header, + sizeof(struct b43legacy_txhdr_fw3), 1); + if (b43legacy_dma_mapping_error(ring, meta_hdr->dmaaddr, + sizeof(struct b43legacy_txhdr_fw3), 1)) { + ring->current_slot = old_top_slot; + ring->used_slots = old_used_slots; + return -EIO; + } + op32_fill_descriptor(ring, desc, meta_hdr->dmaaddr, + sizeof(struct b43legacy_txhdr_fw3), 1, 0, 0); + + /* Get a slot for the payload. */ + slot = request_slot(ring); + desc = op32_idx2desc(ring, slot, &meta); + memset(meta, 0, sizeof(*meta)); + + meta->skb = skb; + meta->is_last_fragment = true; + + meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1); + /* create a bounce buffer in zone_dma on mapping failure. */ + if (b43legacy_dma_mapping_error(ring, meta->dmaaddr, skb->len, 1)) { + bounce_skb = alloc_skb(skb->len, GFP_KERNEL | GFP_DMA); + if (!bounce_skb) { + ring->current_slot = old_top_slot; + ring->used_slots = old_used_slots; + err = -ENOMEM; + goto out_unmap_hdr; + } + + skb_put_data(bounce_skb, skb->data, skb->len); + memcpy(bounce_skb->cb, skb->cb, sizeof(skb->cb)); + bounce_skb->dev = skb->dev; + skb_set_queue_mapping(bounce_skb, skb_get_queue_mapping(skb)); + info = IEEE80211_SKB_CB(bounce_skb); + + dev_kfree_skb_any(skb); + skb = bounce_skb; + *in_skb = bounce_skb; + meta->skb = skb; + meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1); + if (b43legacy_dma_mapping_error(ring, meta->dmaaddr, skb->len, 1)) { + ring->current_slot = old_top_slot; + ring->used_slots = old_used_slots; + err = -EIO; + goto out_free_bounce; + } + } + + op32_fill_descriptor(ring, desc, meta->dmaaddr, + skb->len, 0, 1, 1); + + wmb(); /* previous stuff MUST be done */ + /* Now transfer the whole frame. */ + op32_poke_tx(ring, next_slot(ring, slot)); + return 0; + +out_free_bounce: + dev_kfree_skb_any(skb); +out_unmap_hdr: + unmap_descbuffer(ring, meta_hdr->dmaaddr, + sizeof(struct b43legacy_txhdr_fw3), 1); + return err; +} + +static inline +int should_inject_overflow(struct b43legacy_dmaring *ring) +{ +#ifdef CONFIG_B43LEGACY_DEBUG + if (unlikely(b43legacy_debug(ring->dev, + B43legacy_DBG_DMAOVERFLOW))) { + /* Check if we should inject another ringbuffer overflow + * to test handling of this situation in the stack. */ + unsigned long next_overflow; + + next_overflow = ring->last_injected_overflow + HZ; + if (time_after(jiffies, next_overflow)) { + ring->last_injected_overflow = jiffies; + b43legacydbg(ring->dev->wl, + "Injecting TX ring overflow on " + "DMA controller %d\n", ring->index); + return 1; + } + } +#endif /* CONFIG_B43LEGACY_DEBUG */ + return 0; +} + +int b43legacy_dma_tx(struct b43legacy_wldev *dev, + struct sk_buff *skb) +{ + struct b43legacy_dmaring *ring; + int err = 0; + + ring = priority_to_txring(dev, skb_get_queue_mapping(skb)); + B43legacy_WARN_ON(!ring->tx); + + if (unlikely(ring->stopped)) { + /* We get here only because of a bug in mac80211. + * Because of a race, one packet may be queued after + * the queue is stopped, thus we got called when we shouldn't. + * For now, just refuse the transmit. */ + if (b43legacy_debug(dev, B43legacy_DBG_DMAVERBOSE)) + b43legacyerr(dev->wl, "Packet after queue stopped\n"); + return -ENOSPC; + } + + if (WARN_ON(free_slots(ring) < SLOTS_PER_PACKET)) { + /* If we get here, we have a real error with the queue + * full, but queues not stopped. */ + b43legacyerr(dev->wl, "DMA queue overflow\n"); + return -ENOSPC; + } + + /* dma_tx_fragment might reallocate the skb, so invalidate pointers pointing + * into the skb data or cb now. */ + err = dma_tx_fragment(ring, &skb); + if (unlikely(err == -ENOKEY)) { + /* Drop this packet, as we don't have the encryption key + * anymore and must not transmit it unencrypted. */ + dev_kfree_skb_any(skb); + return 0; + } + if (unlikely(err)) { + b43legacyerr(dev->wl, "DMA tx mapping failure\n"); + return err; + } + if ((free_slots(ring) < SLOTS_PER_PACKET) || + should_inject_overflow(ring)) { + /* This TX ring is full. */ + unsigned int skb_mapping = skb_get_queue_mapping(skb); + ieee80211_stop_queue(dev->wl->hw, skb_mapping); + dev->wl->tx_queue_stopped[skb_mapping] = 1; + ring->stopped = true; + if (b43legacy_debug(dev, B43legacy_DBG_DMAVERBOSE)) + b43legacydbg(dev->wl, "Stopped TX ring %d\n", + ring->index); + } + return err; +} + +void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status) +{ + struct b43legacy_dmaring *ring; + struct b43legacy_dmadesc_meta *meta; + int retry_limit; + int slot; + int firstused; + + ring = parse_cookie(dev, status->cookie, &slot); + if (unlikely(!ring)) + return; + B43legacy_WARN_ON(!ring->tx); + + /* Sanity check: TX packets are processed in-order on one ring. + * Check if the slot deduced from the cookie really is the first + * used slot. */ + firstused = ring->current_slot - ring->used_slots + 1; + if (firstused < 0) + firstused = ring->nr_slots + firstused; + if (unlikely(slot != firstused)) { + /* This possibly is a firmware bug and will result in + * malfunction, memory leaks and/or stall of DMA functionality. + */ + b43legacydbg(dev->wl, "Out of order TX status report on DMA " + "ring %d. Expected %d, but got %d\n", + ring->index, firstused, slot); + return; + } + + while (1) { + B43legacy_WARN_ON(!(slot >= 0 && slot < ring->nr_slots)); + op32_idx2desc(ring, slot, &meta); + + if (meta->skb) + unmap_descbuffer(ring, meta->dmaaddr, + meta->skb->len, 1); + else + unmap_descbuffer(ring, meta->dmaaddr, + sizeof(struct b43legacy_txhdr_fw3), + 1); + + if (meta->is_last_fragment) { + struct ieee80211_tx_info *info; + BUG_ON(!meta->skb); + info = IEEE80211_SKB_CB(meta->skb); + + /* preserve the confiured retry limit before clearing the status + * The xmit function has overwritten the rc's value with the actual + * retry limit done by the hardware */ + retry_limit = info->status.rates[0].count; + ieee80211_tx_info_clear_status(info); + + if (status->acked) + info->flags |= IEEE80211_TX_STAT_ACK; + + if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) { + /* + * If the short retries (RTS, not data frame) have exceeded + * the limit, the hw will not have tried the selected rate, + * but will have used the fallback rate instead. + * Don't let the rate control count attempts for the selected + * rate in this case, otherwise the statistics will be off. + */ + info->status.rates[0].count = 0; + info->status.rates[1].count = status->frame_count; + } else { + if (status->frame_count > retry_limit) { + info->status.rates[0].count = retry_limit; + info->status.rates[1].count = status->frame_count - + retry_limit; + + } else { + info->status.rates[0].count = status->frame_count; + info->status.rates[1].idx = -1; + } + } + + /* Call back to inform the ieee80211 subsystem about the + * status of the transmission. + * Some fields of txstat are already filled in dma_tx(). + */ + ieee80211_tx_status_irqsafe(dev->wl->hw, meta->skb); + /* skb is freed by ieee80211_tx_status_irqsafe() */ + meta->skb = NULL; + } else { + /* No need to call free_descriptor_buffer here, as + * this is only the txhdr, which is not allocated. + */ + B43legacy_WARN_ON(meta->skb != NULL); + } + + /* Everything unmapped and free'd. So it's not used anymore. */ + ring->used_slots--; + + if (meta->is_last_fragment) + break; + slot = next_slot(ring, slot); + } + dev->stats.last_tx = jiffies; + if (ring->stopped) { + B43legacy_WARN_ON(free_slots(ring) < SLOTS_PER_PACKET); + ring->stopped = false; + } + + if (dev->wl->tx_queue_stopped[ring->queue_prio]) { + dev->wl->tx_queue_stopped[ring->queue_prio] = 0; + } else { + /* If the driver queue is running wake the corresponding + * mac80211 queue. */ + ieee80211_wake_queue(dev->wl->hw, ring->queue_prio); + if (b43legacy_debug(dev, B43legacy_DBG_DMAVERBOSE)) + b43legacydbg(dev->wl, "Woke up TX ring %d\n", + ring->index); + } + /* Add work to the queue. */ + ieee80211_queue_work(dev->wl->hw, &dev->wl->tx_work); +} + +static void dma_rx(struct b43legacy_dmaring *ring, + int *slot) +{ + struct b43legacy_dmadesc32 *desc; + struct b43legacy_dmadesc_meta *meta; + struct b43legacy_rxhdr_fw3 *rxhdr; + struct sk_buff *skb; + u16 len; + int err; + dma_addr_t dmaaddr; + + desc = op32_idx2desc(ring, *slot, &meta); + + sync_descbuffer_for_cpu(ring, meta->dmaaddr, ring->rx_buffersize); + skb = meta->skb; + + if (ring->index == 3) { + /* We received an xmit status. */ + struct b43legacy_hwtxstatus *hw = + (struct b43legacy_hwtxstatus *)skb->data; + int i = 0; + + while (hw->cookie == 0) { + if (i > 100) + break; + i++; + udelay(2); + barrier(); + } + b43legacy_handle_hwtxstatus(ring->dev, hw); + /* recycle the descriptor buffer. */ + sync_descbuffer_for_device(ring, meta->dmaaddr, + ring->rx_buffersize); + + return; + } + rxhdr = (struct b43legacy_rxhdr_fw3 *)skb->data; + len = le16_to_cpu(rxhdr->frame_len); + if (len == 0) { + int i = 0; + + do { + udelay(2); + barrier(); + len = le16_to_cpu(rxhdr->frame_len); + } while (len == 0 && i++ < 5); + if (unlikely(len == 0)) { + /* recycle the descriptor buffer. */ + sync_descbuffer_for_device(ring, meta->dmaaddr, + ring->rx_buffersize); + goto drop; + } + } + if (unlikely(len > ring->rx_buffersize)) { + /* The data did not fit into one descriptor buffer + * and is split over multiple buffers. + * This should never happen, as we try to allocate buffers + * big enough. So simply ignore this packet. + */ + int cnt = 0; + s32 tmp = len; + + while (1) { + desc = op32_idx2desc(ring, *slot, &meta); + /* recycle the descriptor buffer. */ + sync_descbuffer_for_device(ring, meta->dmaaddr, + ring->rx_buffersize); + *slot = next_slot(ring, *slot); + cnt++; + tmp -= ring->rx_buffersize; + if (tmp <= 0) + break; + } + b43legacyerr(ring->dev->wl, "DMA RX buffer too small " + "(len: %u, buffer: %u, nr-dropped: %d)\n", + len, ring->rx_buffersize, cnt); + goto drop; + } + + dmaaddr = meta->dmaaddr; + err = setup_rx_descbuffer(ring, desc, meta, GFP_ATOMIC); + if (unlikely(err)) { + b43legacydbg(ring->dev->wl, "DMA RX: setup_rx_descbuffer()" + " failed\n"); + sync_descbuffer_for_device(ring, dmaaddr, + ring->rx_buffersize); + goto drop; + } + + unmap_descbuffer(ring, dmaaddr, ring->rx_buffersize, 0); + skb_put(skb, len + ring->frameoffset); + skb_pull(skb, ring->frameoffset); + + b43legacy_rx(ring->dev, skb, rxhdr); +drop: + return; +} + +void b43legacy_dma_rx(struct b43legacy_dmaring *ring) +{ + int slot; + int current_slot; + int used_slots = 0; + + B43legacy_WARN_ON(ring->tx); + current_slot = op32_get_current_rxslot(ring); + B43legacy_WARN_ON(!(current_slot >= 0 && current_slot < + ring->nr_slots)); + + slot = ring->current_slot; + for (; slot != current_slot; slot = next_slot(ring, slot)) { + dma_rx(ring, &slot); + update_max_used_slots(ring, ++used_slots); + } + op32_set_current_rxslot(ring, slot); + ring->current_slot = slot; +} + +static void b43legacy_dma_tx_suspend_ring(struct b43legacy_dmaring *ring) +{ + B43legacy_WARN_ON(!ring->tx); + op32_tx_suspend(ring); +} + +static void b43legacy_dma_tx_resume_ring(struct b43legacy_dmaring *ring) +{ + B43legacy_WARN_ON(!ring->tx); + op32_tx_resume(ring); +} + +void b43legacy_dma_tx_suspend(struct b43legacy_wldev *dev) +{ + b43legacy_power_saving_ctl_bits(dev, -1, 1); + b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring0); + b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring1); + b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring2); + b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring3); + b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring4); + b43legacy_dma_tx_suspend_ring(dev->dma.tx_ring5); +} + +void b43legacy_dma_tx_resume(struct b43legacy_wldev *dev) +{ + b43legacy_dma_tx_resume_ring(dev->dma.tx_ring5); + b43legacy_dma_tx_resume_ring(dev->dma.tx_ring4); + b43legacy_dma_tx_resume_ring(dev->dma.tx_ring3); + b43legacy_dma_tx_resume_ring(dev->dma.tx_ring2); + b43legacy_dma_tx_resume_ring(dev->dma.tx_ring1); + b43legacy_dma_tx_resume_ring(dev->dma.tx_ring0); + b43legacy_power_saving_ctl_bits(dev, -1, -1); +} diff --git a/drivers/net/wireless/broadcom/b43legacy/dma.h b/drivers/net/wireless/broadcom/b43legacy/dma.h new file mode 100644 index 000000000..b5c1a51db --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/dma.h @@ -0,0 +1,232 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_DMA_H_ +#define B43legacy_DMA_H_ + +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <linux/linkage.h> +#include <linux/atomic.h> + +#include "b43legacy.h" + + +/* DMA-Interrupt reasons. */ +#define B43legacy_DMAIRQ_FATALMASK ((1 << 10) | (1 << 11) | (1 << 12) \ + | (1 << 14) | (1 << 15)) +#define B43legacy_DMAIRQ_NONFATALMASK (1 << 13) +#define B43legacy_DMAIRQ_RX_DONE (1 << 16) + + +/*** 32-bit DMA Engine. ***/ + +/* 32-bit DMA controller registers. */ +#define B43legacy_DMA32_TXCTL 0x00 +#define B43legacy_DMA32_TXENABLE 0x00000001 +#define B43legacy_DMA32_TXSUSPEND 0x00000002 +#define B43legacy_DMA32_TXLOOPBACK 0x00000004 +#define B43legacy_DMA32_TXFLUSH 0x00000010 +#define B43legacy_DMA32_TXADDREXT_MASK 0x00030000 +#define B43legacy_DMA32_TXADDREXT_SHIFT 16 +#define B43legacy_DMA32_TXRING 0x04 +#define B43legacy_DMA32_TXINDEX 0x08 +#define B43legacy_DMA32_TXSTATUS 0x0C +#define B43legacy_DMA32_TXDPTR 0x00000FFF +#define B43legacy_DMA32_TXSTATE 0x0000F000 +#define B43legacy_DMA32_TXSTAT_DISABLED 0x00000000 +#define B43legacy_DMA32_TXSTAT_ACTIVE 0x00001000 +#define B43legacy_DMA32_TXSTAT_IDLEWAIT 0x00002000 +#define B43legacy_DMA32_TXSTAT_STOPPED 0x00003000 +#define B43legacy_DMA32_TXSTAT_SUSP 0x00004000 +#define B43legacy_DMA32_TXERROR 0x000F0000 +#define B43legacy_DMA32_TXERR_NOERR 0x00000000 +#define B43legacy_DMA32_TXERR_PROT 0x00010000 +#define B43legacy_DMA32_TXERR_UNDERRUN 0x00020000 +#define B43legacy_DMA32_TXERR_BUFREAD 0x00030000 +#define B43legacy_DMA32_TXERR_DESCREAD 0x00040000 +#define B43legacy_DMA32_TXACTIVE 0xFFF00000 +#define B43legacy_DMA32_RXCTL 0x10 +#define B43legacy_DMA32_RXENABLE 0x00000001 +#define B43legacy_DMA32_RXFROFF_MASK 0x000000FE +#define B43legacy_DMA32_RXFROFF_SHIFT 1 +#define B43legacy_DMA32_RXDIRECTFIFO 0x00000100 +#define B43legacy_DMA32_RXADDREXT_MASK 0x00030000 +#define B43legacy_DMA32_RXADDREXT_SHIFT 16 +#define B43legacy_DMA32_RXRING 0x14 +#define B43legacy_DMA32_RXINDEX 0x18 +#define B43legacy_DMA32_RXSTATUS 0x1C +#define B43legacy_DMA32_RXDPTR 0x00000FFF +#define B43legacy_DMA32_RXSTATE 0x0000F000 +#define B43legacy_DMA32_RXSTAT_DISABLED 0x00000000 +#define B43legacy_DMA32_RXSTAT_ACTIVE 0x00001000 +#define B43legacy_DMA32_RXSTAT_IDLEWAIT 0x00002000 +#define B43legacy_DMA32_RXSTAT_STOPPED 0x00003000 +#define B43legacy_DMA32_RXERROR 0x000F0000 +#define B43legacy_DMA32_RXERR_NOERR 0x00000000 +#define B43legacy_DMA32_RXERR_PROT 0x00010000 +#define B43legacy_DMA32_RXERR_OVERFLOW 0x00020000 +#define B43legacy_DMA32_RXERR_BUFWRITE 0x00030000 +#define B43legacy_DMA32_RXERR_DESCREAD 0x00040000 +#define B43legacy_DMA32_RXACTIVE 0xFFF00000 + +/* 32-bit DMA descriptor. */ +struct b43legacy_dmadesc32 { + __le32 control; + __le32 address; +} __packed; +#define B43legacy_DMA32_DCTL_BYTECNT 0x00001FFF +#define B43legacy_DMA32_DCTL_ADDREXT_MASK 0x00030000 +#define B43legacy_DMA32_DCTL_ADDREXT_SHIFT 16 +#define B43legacy_DMA32_DCTL_DTABLEEND 0x10000000 +#define B43legacy_DMA32_DCTL_IRQ 0x20000000 +#define B43legacy_DMA32_DCTL_FRAMEEND 0x40000000 +#define B43legacy_DMA32_DCTL_FRAMESTART 0x80000000 + + +/* Misc DMA constants */ +#define B43legacy_DMA_RINGMEMSIZE PAGE_SIZE +#define B43legacy_DMA0_RX_FRAMEOFFSET 30 +#define B43legacy_DMA3_RX_FRAMEOFFSET 0 + + +/* DMA engine tuning knobs */ +#define B43legacy_TXRING_SLOTS 128 +#define B43legacy_RXRING_SLOTS 64 +#define B43legacy_DMA0_RX_BUFFERSIZE (2304 + 100) +#define B43legacy_DMA3_RX_BUFFERSIZE 16 + + + +#ifdef CONFIG_B43LEGACY_DMA + + +struct sk_buff; +struct b43legacy_private; +struct b43legacy_txstatus; + + +struct b43legacy_dmadesc_meta { + /* The kernel DMA-able buffer. */ + struct sk_buff *skb; + /* DMA base bus-address of the descriptor buffer. */ + dma_addr_t dmaaddr; + /* ieee80211 TX status. Only used once per 802.11 frag. */ + bool is_last_fragment; +}; + +enum b43legacy_dmatype { + B43legacy_DMA_30BIT = 30, + B43legacy_DMA_32BIT = 32, +}; + +struct b43legacy_dmaring { + /* Kernel virtual base address of the ring memory. */ + void *descbase; + /* Meta data about all descriptors. */ + struct b43legacy_dmadesc_meta *meta; + /* Cache of TX headers for each slot. + * This is to avoid an allocation on each TX. + * This is NULL for an RX ring. + */ + u8 *txhdr_cache; + /* (Unadjusted) DMA base bus-address of the ring memory. */ + dma_addr_t dmabase; + /* Number of descriptor slots in the ring. */ + int nr_slots; + /* Number of used descriptor slots. */ + int used_slots; + /* Currently used slot in the ring. */ + int current_slot; + /* Frameoffset in octets. */ + u32 frameoffset; + /* Descriptor buffer size. */ + u16 rx_buffersize; + /* The MMIO base register of the DMA controller. */ + u16 mmio_base; + /* DMA controller index number (0-5). */ + int index; + /* Boolean. Is this a TX ring? */ + bool tx; + /* The type of DMA engine used. */ + enum b43legacy_dmatype type; + /* Boolean. Is this ring stopped at ieee80211 level? */ + bool stopped; + /* The QOS priority assigned to this ring. Only used for TX rings. + * This is the mac80211 "queue" value. */ + u8 queue_prio; + struct b43legacy_wldev *dev; +#ifdef CONFIG_B43LEGACY_DEBUG + /* Maximum number of used slots. */ + int max_used_slots; + /* Last time we injected a ring overflow. */ + unsigned long last_injected_overflow; +#endif /* CONFIG_B43LEGACY_DEBUG*/ +}; + + +static inline +u32 b43legacy_dma_read(struct b43legacy_dmaring *ring, + u16 offset) +{ + return b43legacy_read32(ring->dev, ring->mmio_base + offset); +} + +static inline +void b43legacy_dma_write(struct b43legacy_dmaring *ring, + u16 offset, u32 value) +{ + b43legacy_write32(ring->dev, ring->mmio_base + offset, value); +} + + +int b43legacy_dma_init(struct b43legacy_wldev *dev); +void b43legacy_dma_free(struct b43legacy_wldev *dev); + +void b43legacy_dma_tx_suspend(struct b43legacy_wldev *dev); +void b43legacy_dma_tx_resume(struct b43legacy_wldev *dev); + +int b43legacy_dma_tx(struct b43legacy_wldev *dev, + struct sk_buff *skb); +void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status); + +void b43legacy_dma_rx(struct b43legacy_dmaring *ring); + +#else /* CONFIG_B43LEGACY_DMA */ + + +static inline +int b43legacy_dma_init(struct b43legacy_wldev *dev) +{ + return 0; +} +static inline +void b43legacy_dma_free(struct b43legacy_wldev *dev) +{ +} +static inline +int b43legacy_dma_tx(struct b43legacy_wldev *dev, + struct sk_buff *skb) +{ + return 0; +} +static inline +void b43legacy_dma_handle_txstatus(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status) +{ +} +static inline +void b43legacy_dma_rx(struct b43legacy_dmaring *ring) +{ +} +static inline +void b43legacy_dma_tx_suspend(struct b43legacy_wldev *dev) +{ +} +static inline +void b43legacy_dma_tx_resume(struct b43legacy_wldev *dev) +{ +} + +#endif /* CONFIG_B43LEGACY_DMA */ +#endif /* B43legacy_DMA_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/ilt.c b/drivers/net/wireless/broadcom/b43legacy/ilt.c new file mode 100644 index 000000000..f62d6886a --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/ilt.c @@ -0,0 +1,321 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, + Stefano Brivio <stefano.brivio@polimi.it> + Michael Buesch <m@bues.ch> + Danny van Dyk <kugelfang@gentoo.org> + Andreas Jaggi <andreas.jaggi@waterwave.ch> + + +*/ + +#include "b43legacy.h" +#include "ilt.h" +#include "phy.h" + + +/**** Initial Internal Lookup Tables ****/ + +const u32 b43legacy_ilt_rotor[B43legacy_ILT_ROTOR_SIZE] = { + 0xFEB93FFD, 0xFEC63FFD, /* 0 */ + 0xFED23FFD, 0xFEDF3FFD, + 0xFEEC3FFE, 0xFEF83FFE, + 0xFF053FFE, 0xFF113FFE, + 0xFF1E3FFE, 0xFF2A3FFF, /* 8 */ + 0xFF373FFF, 0xFF443FFF, + 0xFF503FFF, 0xFF5D3FFF, + 0xFF693FFF, 0xFF763FFF, + 0xFF824000, 0xFF8F4000, /* 16 */ + 0xFF9B4000, 0xFFA84000, + 0xFFB54000, 0xFFC14000, + 0xFFCE4000, 0xFFDA4000, + 0xFFE74000, 0xFFF34000, /* 24 */ + 0x00004000, 0x000D4000, + 0x00194000, 0x00264000, + 0x00324000, 0x003F4000, + 0x004B4000, 0x00584000, /* 32 */ + 0x00654000, 0x00714000, + 0x007E4000, 0x008A3FFF, + 0x00973FFF, 0x00A33FFF, + 0x00B03FFF, 0x00BC3FFF, /* 40 */ + 0x00C93FFF, 0x00D63FFF, + 0x00E23FFE, 0x00EF3FFE, + 0x00FB3FFE, 0x01083FFE, + 0x01143FFE, 0x01213FFD, /* 48 */ + 0x012E3FFD, 0x013A3FFD, + 0x01473FFD, +}; + +const u32 b43legacy_ilt_retard[B43legacy_ILT_RETARD_SIZE] = { + 0xDB93CB87, 0xD666CF64, /* 0 */ + 0xD1FDD358, 0xCDA6D826, + 0xCA38DD9F, 0xC729E2B4, + 0xC469E88E, 0xC26AEE2B, + 0xC0DEF46C, 0xC073FA62, /* 8 */ + 0xC01D00D5, 0xC0760743, + 0xC1560D1E, 0xC2E51369, + 0xC4ED18FF, 0xC7AC1ED7, + 0xCB2823B2, 0xCEFA28D9, /* 16 */ + 0xD2F62D3F, 0xD7BB3197, + 0xDCE53568, 0xE1FE3875, + 0xE7D13B35, 0xED663D35, + 0xF39B3EC4, 0xF98E3FA7, /* 24 */ + 0x00004000, 0x06723FA7, + 0x0C653EC4, 0x129A3D35, + 0x182F3B35, 0x1E023875, + 0x231B3568, 0x28453197, /* 32 */ + 0x2D0A2D3F, 0x310628D9, + 0x34D823B2, 0x38541ED7, + 0x3B1318FF, 0x3D1B1369, + 0x3EAA0D1E, 0x3F8A0743, /* 40 */ + 0x3FE300D5, 0x3F8DFA62, + 0x3F22F46C, 0x3D96EE2B, + 0x3B97E88E, 0x38D7E2B4, + 0x35C8DD9F, 0x325AD826, /* 48 */ + 0x2E03D358, 0x299ACF64, + 0x246DCB87, +}; + +const u16 b43legacy_ilt_finefreqa[B43legacy_ILT_FINEFREQA_SIZE] = { + 0x0082, 0x0082, 0x0102, 0x0182, /* 0 */ + 0x0202, 0x0282, 0x0302, 0x0382, + 0x0402, 0x0482, 0x0502, 0x0582, + 0x05E2, 0x0662, 0x06E2, 0x0762, + 0x07E2, 0x0842, 0x08C2, 0x0942, /* 16 */ + 0x09C2, 0x0A22, 0x0AA2, 0x0B02, + 0x0B82, 0x0BE2, 0x0C62, 0x0CC2, + 0x0D42, 0x0DA2, 0x0E02, 0x0E62, + 0x0EE2, 0x0F42, 0x0FA2, 0x1002, /* 32 */ + 0x1062, 0x10C2, 0x1122, 0x1182, + 0x11E2, 0x1242, 0x12A2, 0x12E2, + 0x1342, 0x13A2, 0x1402, 0x1442, + 0x14A2, 0x14E2, 0x1542, 0x1582, /* 48 */ + 0x15E2, 0x1622, 0x1662, 0x16C1, + 0x1701, 0x1741, 0x1781, 0x17E1, + 0x1821, 0x1861, 0x18A1, 0x18E1, + 0x1921, 0x1961, 0x19A1, 0x19E1, /* 64 */ + 0x1A21, 0x1A61, 0x1AA1, 0x1AC1, + 0x1B01, 0x1B41, 0x1B81, 0x1BA1, + 0x1BE1, 0x1C21, 0x1C41, 0x1C81, + 0x1CA1, 0x1CE1, 0x1D01, 0x1D41, /* 80 */ + 0x1D61, 0x1DA1, 0x1DC1, 0x1E01, + 0x1E21, 0x1E61, 0x1E81, 0x1EA1, + 0x1EE1, 0x1F01, 0x1F21, 0x1F41, + 0x1F81, 0x1FA1, 0x1FC1, 0x1FE1, /* 96 */ + 0x2001, 0x2041, 0x2061, 0x2081, + 0x20A1, 0x20C1, 0x20E1, 0x2101, + 0x2121, 0x2141, 0x2161, 0x2181, + 0x21A1, 0x21C1, 0x21E1, 0x2201, /* 112 */ + 0x2221, 0x2241, 0x2261, 0x2281, + 0x22A1, 0x22C1, 0x22C1, 0x22E1, + 0x2301, 0x2321, 0x2341, 0x2361, + 0x2361, 0x2381, 0x23A1, 0x23C1, /* 128 */ + 0x23E1, 0x23E1, 0x2401, 0x2421, + 0x2441, 0x2441, 0x2461, 0x2481, + 0x2481, 0x24A1, 0x24C1, 0x24C1, + 0x24E1, 0x2501, 0x2501, 0x2521, /* 144 */ + 0x2541, 0x2541, 0x2561, 0x2561, + 0x2581, 0x25A1, 0x25A1, 0x25C1, + 0x25C1, 0x25E1, 0x2601, 0x2601, + 0x2621, 0x2621, 0x2641, 0x2641, /* 160 */ + 0x2661, 0x2661, 0x2681, 0x2681, + 0x26A1, 0x26A1, 0x26C1, 0x26C1, + 0x26E1, 0x26E1, 0x2701, 0x2701, + 0x2721, 0x2721, 0x2740, 0x2740, /* 176 */ + 0x2760, 0x2760, 0x2780, 0x2780, + 0x2780, 0x27A0, 0x27A0, 0x27C0, + 0x27C0, 0x27E0, 0x27E0, 0x27E0, + 0x2800, 0x2800, 0x2820, 0x2820, /* 192 */ + 0x2820, 0x2840, 0x2840, 0x2840, + 0x2860, 0x2860, 0x2880, 0x2880, + 0x2880, 0x28A0, 0x28A0, 0x28A0, + 0x28C0, 0x28C0, 0x28C0, 0x28E0, /* 208 */ + 0x28E0, 0x28E0, 0x2900, 0x2900, + 0x2900, 0x2920, 0x2920, 0x2920, + 0x2940, 0x2940, 0x2940, 0x2960, + 0x2960, 0x2960, 0x2960, 0x2980, /* 224 */ + 0x2980, 0x2980, 0x29A0, 0x29A0, + 0x29A0, 0x29A0, 0x29C0, 0x29C0, + 0x29C0, 0x29E0, 0x29E0, 0x29E0, + 0x29E0, 0x2A00, 0x2A00, 0x2A00, /* 240 */ + 0x2A00, 0x2A20, 0x2A20, 0x2A20, + 0x2A20, 0x2A40, 0x2A40, 0x2A40, + 0x2A40, 0x2A60, 0x2A60, 0x2A60, +}; + +const u16 b43legacy_ilt_finefreqg[B43legacy_ILT_FINEFREQG_SIZE] = { + 0x0089, 0x02E9, 0x0409, 0x04E9, /* 0 */ + 0x05A9, 0x0669, 0x0709, 0x0789, + 0x0829, 0x08A9, 0x0929, 0x0989, + 0x0A09, 0x0A69, 0x0AC9, 0x0B29, + 0x0BA9, 0x0BE9, 0x0C49, 0x0CA9, /* 16 */ + 0x0D09, 0x0D69, 0x0DA9, 0x0E09, + 0x0E69, 0x0EA9, 0x0F09, 0x0F49, + 0x0FA9, 0x0FE9, 0x1029, 0x1089, + 0x10C9, 0x1109, 0x1169, 0x11A9, /* 32 */ + 0x11E9, 0x1229, 0x1289, 0x12C9, + 0x1309, 0x1349, 0x1389, 0x13C9, + 0x1409, 0x1449, 0x14A9, 0x14E9, + 0x1529, 0x1569, 0x15A9, 0x15E9, /* 48 */ + 0x1629, 0x1669, 0x16A9, 0x16E8, + 0x1728, 0x1768, 0x17A8, 0x17E8, + 0x1828, 0x1868, 0x18A8, 0x18E8, + 0x1928, 0x1968, 0x19A8, 0x19E8, /* 64 */ + 0x1A28, 0x1A68, 0x1AA8, 0x1AE8, + 0x1B28, 0x1B68, 0x1BA8, 0x1BE8, + 0x1C28, 0x1C68, 0x1CA8, 0x1CE8, + 0x1D28, 0x1D68, 0x1DC8, 0x1E08, /* 80 */ + 0x1E48, 0x1E88, 0x1EC8, 0x1F08, + 0x1F48, 0x1F88, 0x1FE8, 0x2028, + 0x2068, 0x20A8, 0x2108, 0x2148, + 0x2188, 0x21C8, 0x2228, 0x2268, /* 96 */ + 0x22C8, 0x2308, 0x2348, 0x23A8, + 0x23E8, 0x2448, 0x24A8, 0x24E8, + 0x2548, 0x25A8, 0x2608, 0x2668, + 0x26C8, 0x2728, 0x2787, 0x27E7, /* 112 */ + 0x2847, 0x28C7, 0x2947, 0x29A7, + 0x2A27, 0x2AC7, 0x2B47, 0x2BE7, + 0x2CA7, 0x2D67, 0x2E47, 0x2F67, + 0x3247, 0x3526, 0x3646, 0x3726, /* 128 */ + 0x3806, 0x38A6, 0x3946, 0x39E6, + 0x3A66, 0x3AE6, 0x3B66, 0x3BC6, + 0x3C45, 0x3CA5, 0x3D05, 0x3D85, + 0x3DE5, 0x3E45, 0x3EA5, 0x3EE5, /* 144 */ + 0x3F45, 0x3FA5, 0x4005, 0x4045, + 0x40A5, 0x40E5, 0x4145, 0x4185, + 0x41E5, 0x4225, 0x4265, 0x42C5, + 0x4305, 0x4345, 0x43A5, 0x43E5, /* 160 */ + 0x4424, 0x4464, 0x44C4, 0x4504, + 0x4544, 0x4584, 0x45C4, 0x4604, + 0x4644, 0x46A4, 0x46E4, 0x4724, + 0x4764, 0x47A4, 0x47E4, 0x4824, /* 176 */ + 0x4864, 0x48A4, 0x48E4, 0x4924, + 0x4964, 0x49A4, 0x49E4, 0x4A24, + 0x4A64, 0x4AA4, 0x4AE4, 0x4B23, + 0x4B63, 0x4BA3, 0x4BE3, 0x4C23, /* 192 */ + 0x4C63, 0x4CA3, 0x4CE3, 0x4D23, + 0x4D63, 0x4DA3, 0x4DE3, 0x4E23, + 0x4E63, 0x4EA3, 0x4EE3, 0x4F23, + 0x4F63, 0x4FC3, 0x5003, 0x5043, /* 208 */ + 0x5083, 0x50C3, 0x5103, 0x5143, + 0x5183, 0x51E2, 0x5222, 0x5262, + 0x52A2, 0x52E2, 0x5342, 0x5382, + 0x53C2, 0x5402, 0x5462, 0x54A2, /* 224 */ + 0x5502, 0x5542, 0x55A2, 0x55E2, + 0x5642, 0x5682, 0x56E2, 0x5722, + 0x5782, 0x57E1, 0x5841, 0x58A1, + 0x5901, 0x5961, 0x59C1, 0x5A21, /* 240 */ + 0x5AA1, 0x5B01, 0x5B81, 0x5BE1, + 0x5C61, 0x5D01, 0x5D80, 0x5E20, + 0x5EE0, 0x5FA0, 0x6080, 0x61C0, +}; + +const u16 b43legacy_ilt_noisea2[B43legacy_ILT_NOISEA2_SIZE] = { + 0x0001, 0x0001, 0x0001, 0xFFFE, + 0xFFFE, 0x3FFF, 0x1000, 0x0393, +}; + +const u16 b43legacy_ilt_noisea3[B43legacy_ILT_NOISEA3_SIZE] = { + 0x4C4C, 0x4C4C, 0x4C4C, 0x2D36, + 0x4C4C, 0x4C4C, 0x4C4C, 0x2D36, +}; + +const u16 b43legacy_ilt_noiseg1[B43legacy_ILT_NOISEG1_SIZE] = { + 0x013C, 0x01F5, 0x031A, 0x0631, + 0x0001, 0x0001, 0x0001, 0x0001, +}; + +const u16 b43legacy_ilt_noiseg2[B43legacy_ILT_NOISEG2_SIZE] = { + 0x5484, 0x3C40, 0x0000, 0x0000, + 0x0000, 0x0000, 0x0000, 0x0000, +}; + +const u16 b43legacy_ilt_noisescaleg1[B43legacy_ILT_NOISESCALEG_SIZE] = { + 0x6C77, 0x5162, 0x3B40, 0x3335, /* 0 */ + 0x2F2D, 0x2A2A, 0x2527, 0x1F21, + 0x1A1D, 0x1719, 0x1616, 0x1414, + 0x1414, 0x1400, 0x1414, 0x1614, + 0x1716, 0x1A19, 0x1F1D, 0x2521, /* 16 */ + 0x2A27, 0x2F2A, 0x332D, 0x3B35, + 0x5140, 0x6C62, 0x0077, +}; + +const u16 b43legacy_ilt_noisescaleg2[B43legacy_ILT_NOISESCALEG_SIZE] = { + 0xD8DD, 0xCBD4, 0xBCC0, 0XB6B7, /* 0 */ + 0xB2B0, 0xADAD, 0xA7A9, 0x9FA1, + 0x969B, 0x9195, 0x8F8F, 0x8A8A, + 0x8A8A, 0x8A00, 0x8A8A, 0x8F8A, + 0x918F, 0x9695, 0x9F9B, 0xA7A1, /* 16 */ + 0xADA9, 0xB2AD, 0xB6B0, 0xBCB7, + 0xCBC0, 0xD8D4, 0x00DD, +}; + +const u16 b43legacy_ilt_noisescaleg3[B43legacy_ILT_NOISESCALEG_SIZE] = { + 0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4, /* 0 */ + 0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4, + 0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4, + 0xA4A4, 0xA400, 0xA4A4, 0xA4A4, + 0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4, /* 16 */ + 0xA4A4, 0xA4A4, 0xA4A4, 0xA4A4, + 0xA4A4, 0xA4A4, 0x00A4, +}; + +const u16 b43legacy_ilt_sigmasqr1[B43legacy_ILT_SIGMASQR_SIZE] = { + 0x007A, 0x0075, 0x0071, 0x006C, /* 0 */ + 0x0067, 0x0063, 0x005E, 0x0059, + 0x0054, 0x0050, 0x004B, 0x0046, + 0x0042, 0x003D, 0x003D, 0x003D, + 0x003D, 0x003D, 0x003D, 0x003D, /* 16 */ + 0x003D, 0x003D, 0x003D, 0x003D, + 0x003D, 0x003D, 0x0000, 0x003D, + 0x003D, 0x003D, 0x003D, 0x003D, + 0x003D, 0x003D, 0x003D, 0x003D, /* 32 */ + 0x003D, 0x003D, 0x003D, 0x003D, + 0x0042, 0x0046, 0x004B, 0x0050, + 0x0054, 0x0059, 0x005E, 0x0063, + 0x0067, 0x006C, 0x0071, 0x0075, /* 48 */ + 0x007A, +}; + +const u16 b43legacy_ilt_sigmasqr2[B43legacy_ILT_SIGMASQR_SIZE] = { + 0x00DE, 0x00DC, 0x00DA, 0x00D8, /* 0 */ + 0x00D6, 0x00D4, 0x00D2, 0x00CF, + 0x00CD, 0x00CA, 0x00C7, 0x00C4, + 0x00C1, 0x00BE, 0x00BE, 0x00BE, + 0x00BE, 0x00BE, 0x00BE, 0x00BE, /* 16 */ + 0x00BE, 0x00BE, 0x00BE, 0x00BE, + 0x00BE, 0x00BE, 0x0000, 0x00BE, + 0x00BE, 0x00BE, 0x00BE, 0x00BE, + 0x00BE, 0x00BE, 0x00BE, 0x00BE, /* 32 */ + 0x00BE, 0x00BE, 0x00BE, 0x00BE, + 0x00C1, 0x00C4, 0x00C7, 0x00CA, + 0x00CD, 0x00CF, 0x00D2, 0x00D4, + 0x00D6, 0x00D8, 0x00DA, 0x00DC, /* 48 */ + 0x00DE, +}; + +/**** Helper functions to access the device Internal Lookup Tables ****/ + +void b43legacy_ilt_write(struct b43legacy_wldev *dev, u16 offset, u16 val) +{ + b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_CTRL, offset); + b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA1, val); +} + +void b43legacy_ilt_write32(struct b43legacy_wldev *dev, u16 offset, u32 val) +{ + b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_CTRL, offset); + b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA2, + (val & 0xFFFF0000) >> 16); + b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA1, + val & 0x0000FFFF); +} + +u16 b43legacy_ilt_read(struct b43legacy_wldev *dev, u16 offset) +{ + b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_CTRL, offset); + return b43legacy_phy_read(dev, B43legacy_PHY_ILT_G_DATA1); +} diff --git a/drivers/net/wireless/broadcom/b43legacy/ilt.h b/drivers/net/wireless/broadcom/b43legacy/ilt.h new file mode 100644 index 000000000..ce7a61e2e --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/ilt.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_ILT_H_ +#define B43legacy_ILT_H_ + +#define B43legacy_ILT_ROTOR_SIZE 53 +extern const u32 b43legacy_ilt_rotor[B43legacy_ILT_ROTOR_SIZE]; +#define B43legacy_ILT_RETARD_SIZE 53 +extern const u32 b43legacy_ilt_retard[B43legacy_ILT_RETARD_SIZE]; +#define B43legacy_ILT_FINEFREQA_SIZE 256 +extern const u16 b43legacy_ilt_finefreqa[B43legacy_ILT_FINEFREQA_SIZE]; +#define B43legacy_ILT_FINEFREQG_SIZE 256 +extern const u16 b43legacy_ilt_finefreqg[B43legacy_ILT_FINEFREQG_SIZE]; +#define B43legacy_ILT_NOISEA2_SIZE 8 +extern const u16 b43legacy_ilt_noisea2[B43legacy_ILT_NOISEA2_SIZE]; +#define B43legacy_ILT_NOISEA3_SIZE 8 +extern const u16 b43legacy_ilt_noisea3[B43legacy_ILT_NOISEA3_SIZE]; +#define B43legacy_ILT_NOISEG1_SIZE 8 +extern const u16 b43legacy_ilt_noiseg1[B43legacy_ILT_NOISEG1_SIZE]; +#define B43legacy_ILT_NOISEG2_SIZE 8 +extern const u16 b43legacy_ilt_noiseg2[B43legacy_ILT_NOISEG2_SIZE]; +#define B43legacy_ILT_NOISESCALEG_SIZE 27 +extern const u16 b43legacy_ilt_noisescaleg1[B43legacy_ILT_NOISESCALEG_SIZE]; +extern const u16 b43legacy_ilt_noisescaleg2[B43legacy_ILT_NOISESCALEG_SIZE]; +extern const u16 b43legacy_ilt_noisescaleg3[B43legacy_ILT_NOISESCALEG_SIZE]; +#define B43legacy_ILT_SIGMASQR_SIZE 53 +extern const u16 b43legacy_ilt_sigmasqr1[B43legacy_ILT_SIGMASQR_SIZE]; +extern const u16 b43legacy_ilt_sigmasqr2[B43legacy_ILT_SIGMASQR_SIZE]; + + +void b43legacy_ilt_write(struct b43legacy_wldev *dev, u16 offset, u16 val); +void b43legacy_ilt_write32(struct b43legacy_wldev *dev, u16 offset, + u32 val); +u16 b43legacy_ilt_read(struct b43legacy_wldev *dev, u16 offset); + +#endif /* B43legacy_ILT_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/leds.c b/drivers/net/wireless/broadcom/b43legacy/leds.c new file mode 100644 index 000000000..38b5be3a8 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/leds.c @@ -0,0 +1,230 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43 wireless driver + LED control + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, + Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it> + Copyright (c) 2005-2007 Michael Buesch <m@bues.ch> + Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> + Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> + + +*/ + +#include "b43legacy.h" +#include "leds.h" +#include "rfkill.h" + + +static void b43legacy_led_turn_on(struct b43legacy_wldev *dev, u8 led_index, + bool activelow) +{ + struct b43legacy_wl *wl = dev->wl; + unsigned long flags; + u16 ctl; + + spin_lock_irqsave(&wl->leds_lock, flags); + ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL); + if (activelow) + ctl &= ~(1 << led_index); + else + ctl |= (1 << led_index); + b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl); + spin_unlock_irqrestore(&wl->leds_lock, flags); +} + +static void b43legacy_led_turn_off(struct b43legacy_wldev *dev, u8 led_index, + bool activelow) +{ + struct b43legacy_wl *wl = dev->wl; + unsigned long flags; + u16 ctl; + + spin_lock_irqsave(&wl->leds_lock, flags); + ctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL); + if (activelow) + ctl |= (1 << led_index); + else + ctl &= ~(1 << led_index); + b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ctl); + spin_unlock_irqrestore(&wl->leds_lock, flags); +} + +/* Callback from the LED subsystem. */ +static void b43legacy_led_brightness_set(struct led_classdev *led_dev, + enum led_brightness brightness) +{ + struct b43legacy_led *led = container_of(led_dev, struct b43legacy_led, + led_dev); + struct b43legacy_wldev *dev = led->dev; + bool radio_enabled; + + /* Checking the radio-enabled status here is slightly racy, + * but we want to avoid the locking overhead and we don't care + * whether the LED has the wrong state for a second. */ + radio_enabled = (dev->phy.radio_on && dev->radio_hw_enable); + + if (brightness == LED_OFF || !radio_enabled) + b43legacy_led_turn_off(dev, led->index, led->activelow); + else + b43legacy_led_turn_on(dev, led->index, led->activelow); +} + +static int b43legacy_register_led(struct b43legacy_wldev *dev, + struct b43legacy_led *led, + const char *name, + const char *default_trigger, + u8 led_index, bool activelow) +{ + int err; + + b43legacy_led_turn_off(dev, led_index, activelow); + if (led->dev) + return -EEXIST; + if (!default_trigger) + return -EINVAL; + led->dev = dev; + led->index = led_index; + led->activelow = activelow; + strlcpy(led->name, name, sizeof(led->name)); + + led->led_dev.name = led->name; + led->led_dev.default_trigger = default_trigger; + led->led_dev.brightness_set = b43legacy_led_brightness_set; + + err = led_classdev_register(dev->dev->dev, &led->led_dev); + if (err) { + b43legacywarn(dev->wl, "LEDs: Failed to register %s\n", name); + led->dev = NULL; + return err; + } + return 0; +} + +static void b43legacy_unregister_led(struct b43legacy_led *led) +{ + if (!led->dev) + return; + led_classdev_unregister(&led->led_dev); + b43legacy_led_turn_off(led->dev, led->index, led->activelow); + led->dev = NULL; +} + +static void b43legacy_map_led(struct b43legacy_wldev *dev, + u8 led_index, + enum b43legacy_led_behaviour behaviour, + bool activelow) +{ + struct ieee80211_hw *hw = dev->wl->hw; + char name[B43legacy_LED_MAX_NAME_LEN + 1]; + + /* Map the b43 specific LED behaviour value to the + * generic LED triggers. */ + switch (behaviour) { + case B43legacy_LED_INACTIVE: + break; + case B43legacy_LED_OFF: + b43legacy_led_turn_off(dev, led_index, activelow); + break; + case B43legacy_LED_ON: + b43legacy_led_turn_on(dev, led_index, activelow); + break; + case B43legacy_LED_ACTIVITY: + case B43legacy_LED_TRANSFER: + case B43legacy_LED_APTRANSFER: + snprintf(name, sizeof(name), + "b43legacy-%s::tx", wiphy_name(hw->wiphy)); + b43legacy_register_led(dev, &dev->led_tx, name, + ieee80211_get_tx_led_name(hw), + led_index, activelow); + snprintf(name, sizeof(name), + "b43legacy-%s::rx", wiphy_name(hw->wiphy)); + b43legacy_register_led(dev, &dev->led_rx, name, + ieee80211_get_rx_led_name(hw), + led_index, activelow); + break; + case B43legacy_LED_RADIO_ALL: + case B43legacy_LED_RADIO_A: + case B43legacy_LED_RADIO_B: + case B43legacy_LED_MODE_BG: + snprintf(name, sizeof(name), + "b43legacy-%s::radio", wiphy_name(hw->wiphy)); + b43legacy_register_led(dev, &dev->led_radio, name, + ieee80211_get_radio_led_name(hw), + led_index, activelow); + /* Sync the RF-kill LED state with radio and switch states. */ + if (dev->phy.radio_on && b43legacy_is_hw_radio_enabled(dev)) + b43legacy_led_turn_on(dev, led_index, activelow); + break; + case B43legacy_LED_WEIRD: + case B43legacy_LED_ASSOC: + snprintf(name, sizeof(name), + "b43legacy-%s::assoc", wiphy_name(hw->wiphy)); + b43legacy_register_led(dev, &dev->led_assoc, name, + ieee80211_get_assoc_led_name(hw), + led_index, activelow); + break; + default: + b43legacywarn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n", + behaviour); + break; + } +} + +void b43legacy_leds_init(struct b43legacy_wldev *dev) +{ + struct ssb_bus *bus = dev->dev->bus; + u8 sprom[4]; + int i; + enum b43legacy_led_behaviour behaviour; + bool activelow; + + sprom[0] = bus->sprom.gpio0; + sprom[1] = bus->sprom.gpio1; + sprom[2] = bus->sprom.gpio2; + sprom[3] = bus->sprom.gpio3; + + for (i = 0; i < 4; i++) { + if (sprom[i] == 0xFF) { + /* There is no LED information in the SPROM + * for this LED. Hardcode it here. */ + activelow = false; + switch (i) { + case 0: + behaviour = B43legacy_LED_ACTIVITY; + activelow = true; + if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ) + behaviour = B43legacy_LED_RADIO_ALL; + break; + case 1: + behaviour = B43legacy_LED_RADIO_B; + if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK) + behaviour = B43legacy_LED_ASSOC; + break; + case 2: + behaviour = B43legacy_LED_RADIO_A; + break; + case 3: + behaviour = B43legacy_LED_OFF; + break; + default: + B43legacy_WARN_ON(1); + return; + } + } else { + behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR; + activelow = !!(sprom[i] & B43legacy_LED_ACTIVELOW); + } + b43legacy_map_led(dev, i, behaviour, activelow); + } +} + +void b43legacy_leds_exit(struct b43legacy_wldev *dev) +{ + b43legacy_unregister_led(&dev->led_tx); + b43legacy_unregister_led(&dev->led_rx); + b43legacy_unregister_led(&dev->led_assoc); + b43legacy_unregister_led(&dev->led_radio); +} diff --git a/drivers/net/wireless/broadcom/b43legacy/leds.h b/drivers/net/wireless/broadcom/b43legacy/leds.h new file mode 100644 index 000000000..389ae06a2 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/leds.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_LEDS_H_ +#define B43legacy_LEDS_H_ + +struct b43legacy_wldev; + +#ifdef CONFIG_B43LEGACY_LEDS + +#include <linux/types.h> +#include <linux/leds.h> + + +#define B43legacy_LED_MAX_NAME_LEN 31 + +struct b43legacy_led { + struct b43legacy_wldev *dev; + /* The LED class device */ + struct led_classdev led_dev; + /* The index number of the LED. */ + u8 index; + /* If activelow is true, the LED is ON if the + * bit is switched off. */ + bool activelow; + /* The unique name string for this LED device. */ + char name[B43legacy_LED_MAX_NAME_LEN + 1]; +}; + +#define B43legacy_LED_BEHAVIOUR 0x7F +#define B43legacy_LED_ACTIVELOW 0x80 +/* LED behaviour values */ +enum b43legacy_led_behaviour { + B43legacy_LED_OFF, + B43legacy_LED_ON, + B43legacy_LED_ACTIVITY, + B43legacy_LED_RADIO_ALL, + B43legacy_LED_RADIO_A, + B43legacy_LED_RADIO_B, + B43legacy_LED_MODE_BG, + B43legacy_LED_TRANSFER, + B43legacy_LED_APTRANSFER, + B43legacy_LED_WEIRD, + B43legacy_LED_ASSOC, + B43legacy_LED_INACTIVE, +}; + +void b43legacy_leds_init(struct b43legacy_wldev *dev); +void b43legacy_leds_exit(struct b43legacy_wldev *dev); + +#else /* CONFIG_B43LEGACY_LEDS */ +/* LED support disabled */ + +struct b43legacy_led { + /* empty */ +}; + +static inline void b43legacy_leds_init(struct b43legacy_wldev *dev) +{ +} +static inline void b43legacy_leds_exit(struct b43legacy_wldev *dev) +{ +} +#endif /* CONFIG_B43LEGACY_LEDS */ + +#endif /* B43legacy_LEDS_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/main.c b/drivers/net/wireless/broadcom/b43legacy/main.c new file mode 100644 index 000000000..a27125b79 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/main.c @@ -0,0 +1,4033 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * + * Broadcom B43legacy wireless driver + * + * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> + * Copyright (c) 2005-2008 Stefano Brivio <stefano.brivio@polimi.it> + * Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch> + * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> + * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> + * Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> + * + * Some parts of the code in this file are derived from the ipw2200 + * driver Copyright(c) 2003 - 2004 Intel Corporation. + + */ + +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/if_arp.h> +#include <linux/etherdevice.h> +#include <linux/firmware.h> +#include <linux/workqueue.h> +#include <linux/sched/signal.h> +#include <linux/skbuff.h> +#include <linux/dma-mapping.h> +#include <linux/slab.h> +#include <net/dst.h> +#include <asm/unaligned.h> + +#include "b43legacy.h" +#include "main.h" +#include "debugfs.h" +#include "phy.h" +#include "dma.h" +#include "pio.h" +#include "sysfs.h" +#include "xmit.h" +#include "radio.h" + + +MODULE_DESCRIPTION("Broadcom B43legacy wireless driver"); +MODULE_AUTHOR("Martin Langer"); +MODULE_AUTHOR("Stefano Brivio"); +MODULE_AUTHOR("Michael Buesch"); +MODULE_LICENSE("GPL"); + +MODULE_FIRMWARE("b43legacy/ucode2.fw"); +MODULE_FIRMWARE("b43legacy/ucode4.fw"); + +#if defined(CONFIG_B43LEGACY_DMA) && defined(CONFIG_B43LEGACY_PIO) +static int modparam_pio; +module_param_named(pio, modparam_pio, int, 0444); +MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode"); +#elif defined(CONFIG_B43LEGACY_DMA) +# define modparam_pio 0 +#elif defined(CONFIG_B43LEGACY_PIO) +# define modparam_pio 1 +#endif + +static int modparam_bad_frames_preempt; +module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444); +MODULE_PARM_DESC(bad_frames_preempt, "enable(1) / disable(0) Bad Frames" + " Preemption"); + +static char modparam_fwpostfix[16]; +module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444); +MODULE_PARM_DESC(fwpostfix, "Postfix for the firmware files to load."); + +/* The following table supports BCM4301, BCM4303 and BCM4306/2 devices. */ +static const struct ssb_device_id b43legacy_ssb_tbl[] = { + SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 2), + SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 4), + {}, +}; +MODULE_DEVICE_TABLE(ssb, b43legacy_ssb_tbl); + + +/* Channel and ratetables are shared for all devices. + * They can't be const, because ieee80211 puts some precalculated + * data in there. This data is the same for all devices, so we don't + * get concurrency issues */ +#define RATETAB_ENT(_rateid, _flags) \ + { \ + .bitrate = B43legacy_RATE_TO_100KBPS(_rateid), \ + .hw_value = (_rateid), \ + .flags = (_flags), \ + } +/* + * NOTE: When changing this, sync with xmit.c's + * b43legacy_plcp_get_bitrate_idx_* functions! + */ +static struct ieee80211_rate __b43legacy_ratetable[] = { + RATETAB_ENT(B43legacy_CCK_RATE_1MB, 0), + RATETAB_ENT(B43legacy_CCK_RATE_2MB, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(B43legacy_CCK_RATE_5MB, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(B43legacy_CCK_RATE_11MB, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(B43legacy_OFDM_RATE_6MB, 0), + RATETAB_ENT(B43legacy_OFDM_RATE_9MB, 0), + RATETAB_ENT(B43legacy_OFDM_RATE_12MB, 0), + RATETAB_ENT(B43legacy_OFDM_RATE_18MB, 0), + RATETAB_ENT(B43legacy_OFDM_RATE_24MB, 0), + RATETAB_ENT(B43legacy_OFDM_RATE_36MB, 0), + RATETAB_ENT(B43legacy_OFDM_RATE_48MB, 0), + RATETAB_ENT(B43legacy_OFDM_RATE_54MB, 0), +}; +#define b43legacy_b_ratetable (__b43legacy_ratetable + 0) +#define b43legacy_b_ratetable_size 4 +#define b43legacy_g_ratetable (__b43legacy_ratetable + 0) +#define b43legacy_g_ratetable_size 12 + +#define CHANTAB_ENT(_chanid, _freq) \ + { \ + .center_freq = (_freq), \ + .hw_value = (_chanid), \ + } +static struct ieee80211_channel b43legacy_bg_chantable[] = { + CHANTAB_ENT(1, 2412), + CHANTAB_ENT(2, 2417), + CHANTAB_ENT(3, 2422), + CHANTAB_ENT(4, 2427), + CHANTAB_ENT(5, 2432), + CHANTAB_ENT(6, 2437), + CHANTAB_ENT(7, 2442), + CHANTAB_ENT(8, 2447), + CHANTAB_ENT(9, 2452), + CHANTAB_ENT(10, 2457), + CHANTAB_ENT(11, 2462), + CHANTAB_ENT(12, 2467), + CHANTAB_ENT(13, 2472), + CHANTAB_ENT(14, 2484), +}; + +static struct ieee80211_supported_band b43legacy_band_2GHz_BPHY = { + .channels = b43legacy_bg_chantable, + .n_channels = ARRAY_SIZE(b43legacy_bg_chantable), + .bitrates = b43legacy_b_ratetable, + .n_bitrates = b43legacy_b_ratetable_size, +}; + +static struct ieee80211_supported_band b43legacy_band_2GHz_GPHY = { + .channels = b43legacy_bg_chantable, + .n_channels = ARRAY_SIZE(b43legacy_bg_chantable), + .bitrates = b43legacy_g_ratetable, + .n_bitrates = b43legacy_g_ratetable_size, +}; + +static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev); +static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev); +static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev); +static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev); + + +static int b43legacy_ratelimit(struct b43legacy_wl *wl) +{ + if (!wl || !wl->current_dev) + return 1; + if (b43legacy_status(wl->current_dev) < B43legacy_STAT_STARTED) + return 1; + /* We are up and running. + * Ratelimit the messages to avoid DoS over the net. */ + return net_ratelimit(); +} + +void b43legacyinfo(struct b43legacy_wl *wl, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + if (!b43legacy_ratelimit(wl)) + return; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + printk(KERN_INFO "b43legacy-%s: %pV", + (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); + + va_end(args); +} + +void b43legacyerr(struct b43legacy_wl *wl, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + if (!b43legacy_ratelimit(wl)) + return; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + printk(KERN_ERR "b43legacy-%s ERROR: %pV", + (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); + + va_end(args); +} + +void b43legacywarn(struct b43legacy_wl *wl, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + if (!b43legacy_ratelimit(wl)) + return; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + printk(KERN_WARNING "b43legacy-%s warning: %pV", + (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); + + va_end(args); +} + +#if B43legacy_DEBUG +void b43legacydbg(struct b43legacy_wl *wl, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; + + printk(KERN_DEBUG "b43legacy-%s debug: %pV", + (wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan", &vaf); + + va_end(args); +} +#endif /* DEBUG */ + +static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset, + u32 val) +{ + u32 status; + + B43legacy_WARN_ON(offset % 4 != 0); + + status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + if (status & B43legacy_MACCTL_BE) + val = swab32(val); + + b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset); + b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val); +} + +static inline +void b43legacy_shm_control_word(struct b43legacy_wldev *dev, + u16 routing, u16 offset) +{ + u32 control; + + /* "offset" is the WORD offset. */ + + control = routing; + control <<= 16; + control |= offset; + b43legacy_write32(dev, B43legacy_MMIO_SHM_CONTROL, control); +} + +u32 b43legacy_shm_read32(struct b43legacy_wldev *dev, + u16 routing, u16 offset) +{ + u32 ret; + + if (routing == B43legacy_SHM_SHARED) { + B43legacy_WARN_ON((offset & 0x0001) != 0); + if (offset & 0x0003) { + /* Unaligned access */ + b43legacy_shm_control_word(dev, routing, offset >> 2); + ret = b43legacy_read16(dev, + B43legacy_MMIO_SHM_DATA_UNALIGNED); + ret <<= 16; + b43legacy_shm_control_word(dev, routing, + (offset >> 2) + 1); + ret |= b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA); + + return ret; + } + offset >>= 2; + } + b43legacy_shm_control_word(dev, routing, offset); + ret = b43legacy_read32(dev, B43legacy_MMIO_SHM_DATA); + + return ret; +} + +u16 b43legacy_shm_read16(struct b43legacy_wldev *dev, + u16 routing, u16 offset) +{ + u16 ret; + + if (routing == B43legacy_SHM_SHARED) { + B43legacy_WARN_ON((offset & 0x0001) != 0); + if (offset & 0x0003) { + /* Unaligned access */ + b43legacy_shm_control_word(dev, routing, offset >> 2); + ret = b43legacy_read16(dev, + B43legacy_MMIO_SHM_DATA_UNALIGNED); + + return ret; + } + offset >>= 2; + } + b43legacy_shm_control_word(dev, routing, offset); + ret = b43legacy_read16(dev, B43legacy_MMIO_SHM_DATA); + + return ret; +} + +void b43legacy_shm_write32(struct b43legacy_wldev *dev, + u16 routing, u16 offset, + u32 value) +{ + if (routing == B43legacy_SHM_SHARED) { + B43legacy_WARN_ON((offset & 0x0001) != 0); + if (offset & 0x0003) { + /* Unaligned access */ + b43legacy_shm_control_word(dev, routing, offset >> 2); + b43legacy_write16(dev, + B43legacy_MMIO_SHM_DATA_UNALIGNED, + (value >> 16) & 0xffff); + b43legacy_shm_control_word(dev, routing, + (offset >> 2) + 1); + b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, + value & 0xffff); + return; + } + offset >>= 2; + } + b43legacy_shm_control_word(dev, routing, offset); + b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value); +} + +void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset, + u16 value) +{ + if (routing == B43legacy_SHM_SHARED) { + B43legacy_WARN_ON((offset & 0x0001) != 0); + if (offset & 0x0003) { + /* Unaligned access */ + b43legacy_shm_control_word(dev, routing, offset >> 2); + b43legacy_write16(dev, + B43legacy_MMIO_SHM_DATA_UNALIGNED, + value); + return; + } + offset >>= 2; + } + b43legacy_shm_control_word(dev, routing, offset); + b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value); +} + +/* Read HostFlags */ +u32 b43legacy_hf_read(struct b43legacy_wldev *dev) +{ + u32 ret; + + ret = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_HOSTFHI); + ret <<= 16; + ret |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_HOSTFLO); + + return ret; +} + +/* Write HostFlags */ +void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value) +{ + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_HOSTFLO, + (value & 0x0000FFFF)); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_HOSTFHI, + ((value & 0xFFFF0000) >> 16)); +} + +void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf) +{ + /* We need to be careful. As we read the TSF from multiple + * registers, we should take care of register overflows. + * In theory, the whole tsf read process should be atomic. + * We try to be atomic here, by restaring the read process, + * if any of the high registers changed (overflew). + */ + if (dev->dev->id.revision >= 3) { + u32 low; + u32 high; + u32 high2; + + do { + high = b43legacy_read32(dev, + B43legacy_MMIO_REV3PLUS_TSF_HIGH); + low = b43legacy_read32(dev, + B43legacy_MMIO_REV3PLUS_TSF_LOW); + high2 = b43legacy_read32(dev, + B43legacy_MMIO_REV3PLUS_TSF_HIGH); + } while (unlikely(high != high2)); + + *tsf = high; + *tsf <<= 32; + *tsf |= low; + } else { + u64 tmp; + u16 v0; + u16 v1; + u16 v2; + u16 v3; + u16 test1; + u16 test2; + u16 test3; + + do { + v3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3); + v2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2); + v1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1); + v0 = b43legacy_read16(dev, B43legacy_MMIO_TSF_0); + + test3 = b43legacy_read16(dev, B43legacy_MMIO_TSF_3); + test2 = b43legacy_read16(dev, B43legacy_MMIO_TSF_2); + test1 = b43legacy_read16(dev, B43legacy_MMIO_TSF_1); + } while (v3 != test3 || v2 != test2 || v1 != test1); + + *tsf = v3; + *tsf <<= 48; + tmp = v2; + tmp <<= 32; + *tsf |= tmp; + tmp = v1; + tmp <<= 16; + *tsf |= tmp; + *tsf |= v0; + } +} + +static void b43legacy_time_lock(struct b43legacy_wldev *dev) +{ + u32 status; + + status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + status |= B43legacy_MACCTL_TBTTHOLD; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); +} + +static void b43legacy_time_unlock(struct b43legacy_wldev *dev) +{ + u32 status; + + status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + status &= ~B43legacy_MACCTL_TBTTHOLD; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); +} + +static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf) +{ + /* Be careful with the in-progress timer. + * First zero out the low register, so we have a full + * register-overflow duration to complete the operation. + */ + if (dev->dev->id.revision >= 3) { + u32 lo = (tsf & 0x00000000FFFFFFFFULL); + u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32; + + b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0); + b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH, + hi); + b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, + lo); + } else { + u16 v0 = (tsf & 0x000000000000FFFFULL); + u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16; + u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32; + u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48; + + b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0); + b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3); + b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2); + b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1); + b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0); + } +} + +void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf) +{ + b43legacy_time_lock(dev); + b43legacy_tsf_write_locked(dev, tsf); + b43legacy_time_unlock(dev); +} + +static +void b43legacy_macfilter_set(struct b43legacy_wldev *dev, + u16 offset, const u8 *mac) +{ + static const u8 zero_addr[ETH_ALEN] = { 0 }; + u16 data; + + if (!mac) + mac = zero_addr; + + offset |= 0x0020; + b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_CONTROL, offset); + + data = mac[0]; + data |= mac[1] << 8; + b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); + data = mac[2]; + data |= mac[3] << 8; + b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); + data = mac[4]; + data |= mac[5] << 8; + b43legacy_write16(dev, B43legacy_MMIO_MACFILTER_DATA, data); +} + +static void b43legacy_write_mac_bssid_templates(struct b43legacy_wldev *dev) +{ + static const u8 zero_addr[ETH_ALEN] = { 0 }; + const u8 *mac = dev->wl->mac_addr; + const u8 *bssid = dev->wl->bssid; + u8 mac_bssid[ETH_ALEN * 2]; + int i; + u32 tmp; + + if (!bssid) + bssid = zero_addr; + if (!mac) + mac = zero_addr; + + b43legacy_macfilter_set(dev, B43legacy_MACFILTER_BSSID, bssid); + + memcpy(mac_bssid, mac, ETH_ALEN); + memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN); + + /* Write our MAC address and BSSID to template ram */ + for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) { + tmp = (u32)(mac_bssid[i + 0]); + tmp |= (u32)(mac_bssid[i + 1]) << 8; + tmp |= (u32)(mac_bssid[i + 2]) << 16; + tmp |= (u32)(mac_bssid[i + 3]) << 24; + b43legacy_ram_write(dev, 0x20 + i, tmp); + b43legacy_ram_write(dev, 0x78 + i, tmp); + b43legacy_ram_write(dev, 0x478 + i, tmp); + } +} + +static void b43legacy_upload_card_macaddress(struct b43legacy_wldev *dev) +{ + b43legacy_write_mac_bssid_templates(dev); + b43legacy_macfilter_set(dev, B43legacy_MACFILTER_SELF, + dev->wl->mac_addr); +} + +static void b43legacy_set_slot_time(struct b43legacy_wldev *dev, + u16 slot_time) +{ + /* slot_time is in usec. */ + if (dev->phy.type != B43legacy_PHYTYPE_G) + return; + b43legacy_write16(dev, 0x684, 510 + slot_time); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0010, + slot_time); +} + +static void b43legacy_short_slot_timing_enable(struct b43legacy_wldev *dev) +{ + b43legacy_set_slot_time(dev, 9); +} + +static void b43legacy_short_slot_timing_disable(struct b43legacy_wldev *dev) +{ + b43legacy_set_slot_time(dev, 20); +} + +/* Synchronize IRQ top- and bottom-half. + * IRQs must be masked before calling this. + * This must not be called with the irq_lock held. + */ +static void b43legacy_synchronize_irq(struct b43legacy_wldev *dev) +{ + synchronize_irq(dev->dev->irq); + tasklet_kill(&dev->isr_tasklet); +} + +/* DummyTransmission function, as documented on + * https://bcm-specs.sipsolutions.net/DummyTransmission + */ +void b43legacy_dummy_transmission(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + unsigned int i; + unsigned int max_loop; + u16 value; + u32 buffer[5] = { + 0x00000000, + 0x00D40000, + 0x00000000, + 0x01000000, + 0x00000000, + }; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + max_loop = 0xFA; + buffer[0] = 0x000B846E; + break; + default: + B43legacy_BUG_ON(1); + return; + } + + for (i = 0; i < 5; i++) + b43legacy_ram_write(dev, i * 4, buffer[i]); + + /* dummy read follows */ + b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + + b43legacy_write16(dev, 0x0568, 0x0000); + b43legacy_write16(dev, 0x07C0, 0x0000); + b43legacy_write16(dev, 0x050C, 0x0000); + b43legacy_write16(dev, 0x0508, 0x0000); + b43legacy_write16(dev, 0x050A, 0x0000); + b43legacy_write16(dev, 0x054C, 0x0000); + b43legacy_write16(dev, 0x056A, 0x0014); + b43legacy_write16(dev, 0x0568, 0x0826); + b43legacy_write16(dev, 0x0500, 0x0000); + b43legacy_write16(dev, 0x0502, 0x0030); + + if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) + b43legacy_radio_write16(dev, 0x0051, 0x0017); + for (i = 0x00; i < max_loop; i++) { + value = b43legacy_read16(dev, 0x050E); + if (value & 0x0080) + break; + udelay(10); + } + for (i = 0x00; i < 0x0A; i++) { + value = b43legacy_read16(dev, 0x050E); + if (value & 0x0400) + break; + udelay(10); + } + for (i = 0x00; i < 0x0A; i++) { + value = b43legacy_read16(dev, 0x0690); + if (!(value & 0x0100)) + break; + udelay(10); + } + if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5) + b43legacy_radio_write16(dev, 0x0051, 0x0037); +} + +/* Turn the Analog ON/OFF */ +static void b43legacy_switch_analog(struct b43legacy_wldev *dev, int on) +{ + b43legacy_write16(dev, B43legacy_MMIO_PHY0, on ? 0 : 0xF4); +} + +void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags) +{ + u32 tmslow; + u32 macctl; + + flags |= B43legacy_TMSLOW_PHYCLKEN; + flags |= B43legacy_TMSLOW_PHYRESET; + ssb_device_enable(dev->dev, flags); + msleep(2); /* Wait for the PLL to turn on. */ + + /* Now take the PHY out of Reset again */ + tmslow = ssb_read32(dev->dev, SSB_TMSLOW); + tmslow |= SSB_TMSLOW_FGC; + tmslow &= ~B43legacy_TMSLOW_PHYRESET; + ssb_write32(dev->dev, SSB_TMSLOW, tmslow); + ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ + msleep(1); + tmslow &= ~SSB_TMSLOW_FGC; + ssb_write32(dev->dev, SSB_TMSLOW, tmslow); + ssb_read32(dev->dev, SSB_TMSLOW); /* flush */ + msleep(1); + + /* Turn Analog ON */ + b43legacy_switch_analog(dev, 1); + + macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + macctl &= ~B43legacy_MACCTL_GMODE; + if (flags & B43legacy_TMSLOW_GMODE) { + macctl |= B43legacy_MACCTL_GMODE; + dev->phy.gmode = true; + } else + dev->phy.gmode = false; + macctl |= B43legacy_MACCTL_IHR_ENABLED; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); +} + +static void handle_irq_transmit_status(struct b43legacy_wldev *dev) +{ + u32 v0; + u32 v1; + u16 tmp; + struct b43legacy_txstatus stat; + + while (1) { + v0 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0); + if (!(v0 & 0x00000001)) + break; + v1 = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1); + + stat.cookie = (v0 >> 16); + stat.seq = (v1 & 0x0000FFFF); + stat.phy_stat = ((v1 & 0x00FF0000) >> 16); + tmp = (v0 & 0x0000FFFF); + stat.frame_count = ((tmp & 0xF000) >> 12); + stat.rts_count = ((tmp & 0x0F00) >> 8); + stat.supp_reason = ((tmp & 0x001C) >> 2); + stat.pm_indicated = !!(tmp & 0x0080); + stat.intermediate = !!(tmp & 0x0040); + stat.for_ampdu = !!(tmp & 0x0020); + stat.acked = !!(tmp & 0x0002); + + b43legacy_handle_txstatus(dev, &stat); + } +} + +static void drain_txstatus_queue(struct b43legacy_wldev *dev) +{ + u32 dummy; + + if (dev->dev->id.revision < 5) + return; + /* Read all entries from the microcode TXstatus FIFO + * and throw them away. + */ + while (1) { + dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_0); + if (!(dummy & 0x00000001)) + break; + dummy = b43legacy_read32(dev, B43legacy_MMIO_XMITSTAT_1); + } +} + +static u32 b43legacy_jssi_read(struct b43legacy_wldev *dev) +{ + u32 val = 0; + + val = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x40A); + val <<= 16; + val |= b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x408); + + return val; +} + +static void b43legacy_jssi_write(struct b43legacy_wldev *dev, u32 jssi) +{ + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x408, + (jssi & 0x0000FFFF)); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x40A, + (jssi & 0xFFFF0000) >> 16); +} + +static void b43legacy_generate_noise_sample(struct b43legacy_wldev *dev) +{ + b43legacy_jssi_write(dev, 0x7F7F7F7F); + b43legacy_write32(dev, B43legacy_MMIO_MACCMD, + b43legacy_read32(dev, B43legacy_MMIO_MACCMD) + | B43legacy_MACCMD_BGNOISE); + B43legacy_WARN_ON(dev->noisecalc.channel_at_start != + dev->phy.channel); +} + +static void b43legacy_calculate_link_quality(struct b43legacy_wldev *dev) +{ + /* Top half of Link Quality calculation. */ + + if (dev->noisecalc.calculation_running) + return; + dev->noisecalc.channel_at_start = dev->phy.channel; + dev->noisecalc.calculation_running = true; + dev->noisecalc.nr_samples = 0; + + b43legacy_generate_noise_sample(dev); +} + +static void handle_irq_noise(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 tmp; + u8 noise[4]; + u8 i; + u8 j; + s32 average; + + /* Bottom half of Link Quality calculation. */ + + B43legacy_WARN_ON(!dev->noisecalc.calculation_running); + if (dev->noisecalc.channel_at_start != phy->channel) + goto drop_calculation; + *((__le32 *)noise) = cpu_to_le32(b43legacy_jssi_read(dev)); + if (noise[0] == 0x7F || noise[1] == 0x7F || + noise[2] == 0x7F || noise[3] == 0x7F) + goto generate_new; + + /* Get the noise samples. */ + B43legacy_WARN_ON(dev->noisecalc.nr_samples >= 8); + i = dev->noisecalc.nr_samples; + noise[0] = clamp_val(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); + noise[1] = clamp_val(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); + noise[2] = clamp_val(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); + noise[3] = clamp_val(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1); + dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]]; + dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]]; + dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]]; + dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]]; + dev->noisecalc.nr_samples++; + if (dev->noisecalc.nr_samples == 8) { + /* Calculate the Link Quality by the noise samples. */ + average = 0; + for (i = 0; i < 8; i++) { + for (j = 0; j < 4; j++) + average += dev->noisecalc.samples[i][j]; + } + average /= (8 * 4); + average *= 125; + average += 64; + average /= 128; + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + 0x40C); + tmp = (tmp / 128) & 0x1F; + if (tmp >= 8) + average += 2; + else + average -= 25; + if (tmp == 8) + average -= 72; + else + average -= 48; + + dev->stats.link_noise = average; +drop_calculation: + dev->noisecalc.calculation_running = false; + return; + } +generate_new: + b43legacy_generate_noise_sample(dev); +} + +static void handle_irq_tbtt_indication(struct b43legacy_wldev *dev) +{ + if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) { + /* TODO: PS TBTT */ + } else { + if (1/*FIXME: the last PSpoll frame was sent successfully */) + b43legacy_power_saving_ctl_bits(dev, -1, -1); + } + if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) + dev->dfq_valid = true; +} + +static void handle_irq_atim_end(struct b43legacy_wldev *dev) +{ + if (dev->dfq_valid) { + b43legacy_write32(dev, B43legacy_MMIO_MACCMD, + b43legacy_read32(dev, B43legacy_MMIO_MACCMD) + | B43legacy_MACCMD_DFQ_VALID); + dev->dfq_valid = false; + } +} + +static void handle_irq_pmq(struct b43legacy_wldev *dev) +{ + u32 tmp; + + /* TODO: AP mode. */ + + while (1) { + tmp = b43legacy_read32(dev, B43legacy_MMIO_PS_STATUS); + if (!(tmp & 0x00000008)) + break; + } + /* 16bit write is odd, but correct. */ + b43legacy_write16(dev, B43legacy_MMIO_PS_STATUS, 0x0002); +} + +static void b43legacy_write_template_common(struct b43legacy_wldev *dev, + const u8 *data, u16 size, + u16 ram_offset, + u16 shm_size_offset, u8 rate) +{ + u32 i; + u32 tmp; + struct b43legacy_plcp_hdr4 plcp; + + plcp.data = 0; + b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate); + b43legacy_ram_write(dev, ram_offset, le32_to_cpu(plcp.data)); + ram_offset += sizeof(u32); + /* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet. + * So leave the first two bytes of the next write blank. + */ + tmp = (u32)(data[0]) << 16; + tmp |= (u32)(data[1]) << 24; + b43legacy_ram_write(dev, ram_offset, tmp); + ram_offset += sizeof(u32); + for (i = 2; i < size; i += sizeof(u32)) { + tmp = (u32)(data[i + 0]); + if (i + 1 < size) + tmp |= (u32)(data[i + 1]) << 8; + if (i + 2 < size) + tmp |= (u32)(data[i + 2]) << 16; + if (i + 3 < size) + tmp |= (u32)(data[i + 3]) << 24; + b43legacy_ram_write(dev, ram_offset + i - 2, tmp); + } + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_size_offset, + size + sizeof(struct b43legacy_plcp_hdr6)); +} + +/* Convert a b43legacy antenna number value to the PHY TX control value. */ +static u16 b43legacy_antenna_to_phyctl(int antenna) +{ + switch (antenna) { + case B43legacy_ANTENNA0: + return B43legacy_TX4_PHY_ANT0; + case B43legacy_ANTENNA1: + return B43legacy_TX4_PHY_ANT1; + } + return B43legacy_TX4_PHY_ANTLAST; +} + +static void b43legacy_write_beacon_template(struct b43legacy_wldev *dev, + u16 ram_offset, + u16 shm_size_offset) +{ + + unsigned int i, len, variable_len; + const struct ieee80211_mgmt *bcn; + const u8 *ie; + bool tim_found = false; + unsigned int rate; + u16 ctl; + int antenna; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(dev->wl->current_beacon); + + bcn = (const struct ieee80211_mgmt *)(dev->wl->current_beacon->data); + len = min_t(size_t, dev->wl->current_beacon->len, + 0x200 - sizeof(struct b43legacy_plcp_hdr6)); + rate = ieee80211_get_tx_rate(dev->wl->hw, info)->hw_value; + + b43legacy_write_template_common(dev, (const u8 *)bcn, len, ram_offset, + shm_size_offset, rate); + + /* Write the PHY TX control parameters. */ + antenna = B43legacy_ANTENNA_DEFAULT; + antenna = b43legacy_antenna_to_phyctl(antenna); + ctl = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_BEACPHYCTL); + /* We can't send beacons with short preamble. Would get PHY errors. */ + ctl &= ~B43legacy_TX4_PHY_SHORTPRMBL; + ctl &= ~B43legacy_TX4_PHY_ANT; + ctl &= ~B43legacy_TX4_PHY_ENC; + ctl |= antenna; + ctl |= B43legacy_TX4_PHY_ENC_CCK; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_BEACPHYCTL, ctl); + + /* Find the position of the TIM and the DTIM_period value + * and write them to SHM. */ + ie = bcn->u.beacon.variable; + variable_len = len - offsetof(struct ieee80211_mgmt, u.beacon.variable); + for (i = 0; i < variable_len - 2; ) { + uint8_t ie_id, ie_len; + + ie_id = ie[i]; + ie_len = ie[i + 1]; + if (ie_id == 5) { + u16 tim_position; + u16 dtim_period; + /* This is the TIM Information Element */ + + /* Check whether the ie_len is in the beacon data range. */ + if (variable_len < ie_len + 2 + i) + break; + /* A valid TIM is at least 4 bytes long. */ + if (ie_len < 4) + break; + tim_found = true; + + tim_position = sizeof(struct b43legacy_plcp_hdr6); + tim_position += offsetof(struct ieee80211_mgmt, + u.beacon.variable); + tim_position += i; + + dtim_period = ie[i + 3]; + + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_TIMPOS, tim_position); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_DTIMP, dtim_period); + break; + } + i += ie_len + 2; + } + if (!tim_found) { + b43legacywarn(dev->wl, "Did not find a valid TIM IE in the " + "beacon template packet. AP or IBSS operation " + "may be broken.\n"); + } else + b43legacydbg(dev->wl, "Updated beacon template\n"); +} + +static void b43legacy_write_probe_resp_plcp(struct b43legacy_wldev *dev, + u16 shm_offset, u16 size, + struct ieee80211_rate *rate) +{ + struct b43legacy_plcp_hdr4 plcp; + u32 tmp; + __le16 dur; + + plcp.data = 0; + b43legacy_generate_plcp_hdr(&plcp, size + FCS_LEN, rate->hw_value); + dur = ieee80211_generic_frame_duration(dev->wl->hw, + dev->wl->vif, + NL80211_BAND_2GHZ, + size, + rate); + /* Write PLCP in two parts and timing for packet transfer */ + tmp = le32_to_cpu(plcp.data); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset, + tmp & 0xFFFF); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 2, + tmp >> 16); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, shm_offset + 6, + le16_to_cpu(dur)); +} + +/* Instead of using custom probe response template, this function + * just patches custom beacon template by: + * 1) Changing packet type + * 2) Patching duration field + * 3) Stripping TIM + */ +static const u8 *b43legacy_generate_probe_resp(struct b43legacy_wldev *dev, + u16 *dest_size, + struct ieee80211_rate *rate) +{ + const u8 *src_data; + u8 *dest_data; + u16 src_size, elem_size, src_pos, dest_pos; + __le16 dur; + struct ieee80211_hdr *hdr; + size_t ie_start; + + src_size = dev->wl->current_beacon->len; + src_data = (const u8 *)dev->wl->current_beacon->data; + + /* Get the start offset of the variable IEs in the packet. */ + ie_start = offsetof(struct ieee80211_mgmt, u.probe_resp.variable); + B43legacy_WARN_ON(ie_start != offsetof(struct ieee80211_mgmt, + u.beacon.variable)); + + if (B43legacy_WARN_ON(src_size < ie_start)) + return NULL; + + dest_data = kmalloc(src_size, GFP_ATOMIC); + if (unlikely(!dest_data)) + return NULL; + + /* Copy the static data and all Information Elements, except the TIM. */ + memcpy(dest_data, src_data, ie_start); + src_pos = ie_start; + dest_pos = ie_start; + for ( ; src_pos < src_size - 2; src_pos += elem_size) { + elem_size = src_data[src_pos + 1] + 2; + if (src_data[src_pos] == 5) { + /* This is the TIM. */ + continue; + } + memcpy(dest_data + dest_pos, src_data + src_pos, elem_size); + dest_pos += elem_size; + } + *dest_size = dest_pos; + hdr = (struct ieee80211_hdr *)dest_data; + + /* Set the frame control. */ + hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_PROBE_RESP); + dur = ieee80211_generic_frame_duration(dev->wl->hw, + dev->wl->vif, + NL80211_BAND_2GHZ, + *dest_size, + rate); + hdr->duration_id = dur; + + return dest_data; +} + +static void b43legacy_write_probe_resp_template(struct b43legacy_wldev *dev, + u16 ram_offset, + u16 shm_size_offset, + struct ieee80211_rate *rate) +{ + const u8 *probe_resp_data; + u16 size; + + size = dev->wl->current_beacon->len; + probe_resp_data = b43legacy_generate_probe_resp(dev, &size, rate); + if (unlikely(!probe_resp_data)) + return; + + /* Looks like PLCP headers plus packet timings are stored for + * all possible basic rates + */ + b43legacy_write_probe_resp_plcp(dev, 0x31A, size, + &b43legacy_b_ratetable[0]); + b43legacy_write_probe_resp_plcp(dev, 0x32C, size, + &b43legacy_b_ratetable[1]); + b43legacy_write_probe_resp_plcp(dev, 0x33E, size, + &b43legacy_b_ratetable[2]); + b43legacy_write_probe_resp_plcp(dev, 0x350, size, + &b43legacy_b_ratetable[3]); + + size = min_t(size_t, size, + 0x200 - sizeof(struct b43legacy_plcp_hdr6)); + b43legacy_write_template_common(dev, probe_resp_data, + size, ram_offset, + shm_size_offset, rate->hw_value); + kfree(probe_resp_data); +} + +static void b43legacy_upload_beacon0(struct b43legacy_wldev *dev) +{ + struct b43legacy_wl *wl = dev->wl; + + if (wl->beacon0_uploaded) + return; + b43legacy_write_beacon_template(dev, 0x68, 0x18); + /* FIXME: Probe resp upload doesn't really belong here, + * but we don't use that feature anyway. */ + b43legacy_write_probe_resp_template(dev, 0x268, 0x4A, + &__b43legacy_ratetable[3]); + wl->beacon0_uploaded = true; +} + +static void b43legacy_upload_beacon1(struct b43legacy_wldev *dev) +{ + struct b43legacy_wl *wl = dev->wl; + + if (wl->beacon1_uploaded) + return; + b43legacy_write_beacon_template(dev, 0x468, 0x1A); + wl->beacon1_uploaded = true; +} + +static void handle_irq_beacon(struct b43legacy_wldev *dev) +{ + struct b43legacy_wl *wl = dev->wl; + u32 cmd, beacon0_valid, beacon1_valid; + + if (!b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) + return; + + /* This is the bottom half of the asynchronous beacon update. */ + + /* Ignore interrupt in the future. */ + dev->irq_mask &= ~B43legacy_IRQ_BEACON; + + cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); + beacon0_valid = (cmd & B43legacy_MACCMD_BEACON0_VALID); + beacon1_valid = (cmd & B43legacy_MACCMD_BEACON1_VALID); + + /* Schedule interrupt manually, if busy. */ + if (beacon0_valid && beacon1_valid) { + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, B43legacy_IRQ_BEACON); + dev->irq_mask |= B43legacy_IRQ_BEACON; + return; + } + + if (unlikely(wl->beacon_templates_virgin)) { + /* We never uploaded a beacon before. + * Upload both templates now, but only mark one valid. */ + wl->beacon_templates_virgin = false; + b43legacy_upload_beacon0(dev); + b43legacy_upload_beacon1(dev); + cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); + cmd |= B43legacy_MACCMD_BEACON0_VALID; + b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); + } else { + if (!beacon0_valid) { + b43legacy_upload_beacon0(dev); + cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); + cmd |= B43legacy_MACCMD_BEACON0_VALID; + b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); + } else if (!beacon1_valid) { + b43legacy_upload_beacon1(dev); + cmd = b43legacy_read32(dev, B43legacy_MMIO_MACCMD); + cmd |= B43legacy_MACCMD_BEACON1_VALID; + b43legacy_write32(dev, B43legacy_MMIO_MACCMD, cmd); + } + } +} + +static void b43legacy_beacon_update_trigger_work(struct work_struct *work) +{ + struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl, + beacon_update_trigger); + struct b43legacy_wldev *dev; + + mutex_lock(&wl->mutex); + dev = wl->current_dev; + if (likely(dev && (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED))) { + spin_lock_irq(&wl->irq_lock); + /* Update beacon right away or defer to IRQ. */ + handle_irq_beacon(dev); + /* The handler might have updated the IRQ mask. */ + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, + dev->irq_mask); + spin_unlock_irq(&wl->irq_lock); + } + mutex_unlock(&wl->mutex); +} + +/* Asynchronously update the packet templates in template RAM. + * Locking: Requires wl->irq_lock to be locked. */ +static void b43legacy_update_templates(struct b43legacy_wl *wl) +{ + struct sk_buff *beacon; + /* This is the top half of the ansynchronous beacon update. The bottom + * half is the beacon IRQ. Beacon update must be asynchronous to avoid + * sending an invalid beacon. This can happen for example, if the + * firmware transmits a beacon while we are updating it. */ + + /* We could modify the existing beacon and set the aid bit in the TIM + * field, but that would probably require resizing and moving of data + * within the beacon template. Simply request a new beacon and let + * mac80211 do the hard work. */ + beacon = ieee80211_beacon_get(wl->hw, wl->vif); + if (unlikely(!beacon)) + return; + + if (wl->current_beacon) + dev_kfree_skb_any(wl->current_beacon); + wl->current_beacon = beacon; + wl->beacon0_uploaded = false; + wl->beacon1_uploaded = false; + ieee80211_queue_work(wl->hw, &wl->beacon_update_trigger); +} + +static void b43legacy_set_beacon_int(struct b43legacy_wldev *dev, + u16 beacon_int) +{ + b43legacy_time_lock(dev); + if (dev->dev->id.revision >= 3) { + b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_REP, + (beacon_int << 16)); + b43legacy_write32(dev, B43legacy_MMIO_TSF_CFP_START, + (beacon_int << 10)); + } else { + b43legacy_write16(dev, 0x606, (beacon_int >> 6)); + b43legacy_write16(dev, 0x610, beacon_int); + } + b43legacy_time_unlock(dev); + b43legacydbg(dev->wl, "Set beacon interval to %u\n", beacon_int); +} + +static void handle_irq_ucode_debug(struct b43legacy_wldev *dev) +{ +} + +/* Interrupt handler bottom-half */ +static void b43legacy_interrupt_tasklet(struct tasklet_struct *t) +{ + struct b43legacy_wldev *dev = from_tasklet(dev, t, isr_tasklet); + u32 reason; + u32 dma_reason[ARRAY_SIZE(dev->dma_reason)]; + u32 merged_dma_reason = 0; + int i; + unsigned long flags; + + spin_lock_irqsave(&dev->wl->irq_lock, flags); + + B43legacy_WARN_ON(b43legacy_status(dev) < + B43legacy_STAT_INITIALIZED); + + reason = dev->irq_reason; + for (i = 0; i < ARRAY_SIZE(dma_reason); i++) { + dma_reason[i] = dev->dma_reason[i]; + merged_dma_reason |= dma_reason[i]; + } + + if (unlikely(reason & B43legacy_IRQ_MAC_TXERR)) + b43legacyerr(dev->wl, "MAC transmission error\n"); + + if (unlikely(reason & B43legacy_IRQ_PHY_TXERR)) { + b43legacyerr(dev->wl, "PHY transmission error\n"); + rmb(); + if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) { + b43legacyerr(dev->wl, "Too many PHY TX errors, " + "restarting the controller\n"); + b43legacy_controller_restart(dev, "PHY TX errors"); + } + } + + if (unlikely(merged_dma_reason & (B43legacy_DMAIRQ_FATALMASK | + B43legacy_DMAIRQ_NONFATALMASK))) { + if (merged_dma_reason & B43legacy_DMAIRQ_FATALMASK) { + b43legacyerr(dev->wl, "Fatal DMA error: " + "0x%08X, 0x%08X, 0x%08X, " + "0x%08X, 0x%08X, 0x%08X\n", + dma_reason[0], dma_reason[1], + dma_reason[2], dma_reason[3], + dma_reason[4], dma_reason[5]); + b43legacy_controller_restart(dev, "DMA error"); + spin_unlock_irqrestore(&dev->wl->irq_lock, flags); + return; + } + if (merged_dma_reason & B43legacy_DMAIRQ_NONFATALMASK) + b43legacyerr(dev->wl, "DMA error: " + "0x%08X, 0x%08X, 0x%08X, " + "0x%08X, 0x%08X, 0x%08X\n", + dma_reason[0], dma_reason[1], + dma_reason[2], dma_reason[3], + dma_reason[4], dma_reason[5]); + } + + if (unlikely(reason & B43legacy_IRQ_UCODE_DEBUG)) + handle_irq_ucode_debug(dev); + if (reason & B43legacy_IRQ_TBTT_INDI) + handle_irq_tbtt_indication(dev); + if (reason & B43legacy_IRQ_ATIM_END) + handle_irq_atim_end(dev); + if (reason & B43legacy_IRQ_BEACON) + handle_irq_beacon(dev); + if (reason & B43legacy_IRQ_PMQ) + handle_irq_pmq(dev); + if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK) { + ;/*TODO*/ + } + if (reason & B43legacy_IRQ_NOISESAMPLE_OK) + handle_irq_noise(dev); + + /* Check the DMA reason registers for received data. */ + if (dma_reason[0] & B43legacy_DMAIRQ_RX_DONE) { + if (b43legacy_using_pio(dev)) + b43legacy_pio_rx(dev->pio.queue0); + else + b43legacy_dma_rx(dev->dma.rx_ring0); + } + B43legacy_WARN_ON(dma_reason[1] & B43legacy_DMAIRQ_RX_DONE); + B43legacy_WARN_ON(dma_reason[2] & B43legacy_DMAIRQ_RX_DONE); + if (dma_reason[3] & B43legacy_DMAIRQ_RX_DONE) { + if (b43legacy_using_pio(dev)) + b43legacy_pio_rx(dev->pio.queue3); + else + b43legacy_dma_rx(dev->dma.rx_ring3); + } + B43legacy_WARN_ON(dma_reason[4] & B43legacy_DMAIRQ_RX_DONE); + B43legacy_WARN_ON(dma_reason[5] & B43legacy_DMAIRQ_RX_DONE); + + if (reason & B43legacy_IRQ_TX_OK) + handle_irq_transmit_status(dev); + + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); + spin_unlock_irqrestore(&dev->wl->irq_lock, flags); +} + +static void pio_irq_workaround(struct b43legacy_wldev *dev, + u16 base, int queueidx) +{ + u16 rxctl; + + rxctl = b43legacy_read16(dev, base + B43legacy_PIO_RXCTL); + if (rxctl & B43legacy_PIO_RXCTL_DATAAVAILABLE) + dev->dma_reason[queueidx] |= B43legacy_DMAIRQ_RX_DONE; + else + dev->dma_reason[queueidx] &= ~B43legacy_DMAIRQ_RX_DONE; +} + +static void b43legacy_interrupt_ack(struct b43legacy_wldev *dev, u32 reason) +{ + if (b43legacy_using_pio(dev) && + (dev->dev->id.revision < 3) && + (!(reason & B43legacy_IRQ_PIO_WORKAROUND))) { + /* Apply a PIO specific workaround to the dma_reasons */ + pio_irq_workaround(dev, B43legacy_MMIO_PIO1_BASE, 0); + pio_irq_workaround(dev, B43legacy_MMIO_PIO2_BASE, 1); + pio_irq_workaround(dev, B43legacy_MMIO_PIO3_BASE, 2); + pio_irq_workaround(dev, B43legacy_MMIO_PIO4_BASE, 3); + } + + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, reason); + + b43legacy_write32(dev, B43legacy_MMIO_DMA0_REASON, + dev->dma_reason[0]); + b43legacy_write32(dev, B43legacy_MMIO_DMA1_REASON, + dev->dma_reason[1]); + b43legacy_write32(dev, B43legacy_MMIO_DMA2_REASON, + dev->dma_reason[2]); + b43legacy_write32(dev, B43legacy_MMIO_DMA3_REASON, + dev->dma_reason[3]); + b43legacy_write32(dev, B43legacy_MMIO_DMA4_REASON, + dev->dma_reason[4]); + b43legacy_write32(dev, B43legacy_MMIO_DMA5_REASON, + dev->dma_reason[5]); +} + +/* Interrupt handler top-half */ +static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id) +{ + irqreturn_t ret = IRQ_NONE; + struct b43legacy_wldev *dev = dev_id; + u32 reason; + + B43legacy_WARN_ON(!dev); + + spin_lock(&dev->wl->irq_lock); + + if (unlikely(b43legacy_status(dev) < B43legacy_STAT_STARTED)) + /* This can only happen on shared IRQ lines. */ + goto out; + reason = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); + if (reason == 0xffffffff) /* shared IRQ */ + goto out; + ret = IRQ_HANDLED; + reason &= dev->irq_mask; + if (!reason) + goto out; + + dev->dma_reason[0] = b43legacy_read32(dev, + B43legacy_MMIO_DMA0_REASON) + & 0x0001DC00; + dev->dma_reason[1] = b43legacy_read32(dev, + B43legacy_MMIO_DMA1_REASON) + & 0x0000DC00; + dev->dma_reason[2] = b43legacy_read32(dev, + B43legacy_MMIO_DMA2_REASON) + & 0x0000DC00; + dev->dma_reason[3] = b43legacy_read32(dev, + B43legacy_MMIO_DMA3_REASON) + & 0x0001DC00; + dev->dma_reason[4] = b43legacy_read32(dev, + B43legacy_MMIO_DMA4_REASON) + & 0x0000DC00; + dev->dma_reason[5] = b43legacy_read32(dev, + B43legacy_MMIO_DMA5_REASON) + & 0x0000DC00; + + b43legacy_interrupt_ack(dev, reason); + /* Disable all IRQs. They are enabled again in the bottom half. */ + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); + /* Save the reason code and call our bottom half. */ + dev->irq_reason = reason; + tasklet_schedule(&dev->isr_tasklet); +out: + spin_unlock(&dev->wl->irq_lock); + + return ret; +} + +static void b43legacy_release_firmware(struct b43legacy_wldev *dev) +{ + release_firmware(dev->fw.ucode); + dev->fw.ucode = NULL; + release_firmware(dev->fw.pcm); + dev->fw.pcm = NULL; + release_firmware(dev->fw.initvals); + dev->fw.initvals = NULL; + release_firmware(dev->fw.initvals_band); + dev->fw.initvals_band = NULL; +} + +static void b43legacy_print_fw_helptext(struct b43legacy_wl *wl) +{ + b43legacyerr(wl, "You must go to https://wireless.wiki.kernel.org/en/" + "users/Drivers/b43#devicefirmware " + "and download the correct firmware (version 3).\n"); +} + +static void b43legacy_fw_cb(const struct firmware *firmware, void *context) +{ + struct b43legacy_wldev *dev = context; + + dev->fwp = firmware; + complete(&dev->fw_load_complete); +} + +static int do_request_fw(struct b43legacy_wldev *dev, + const char *name, + const struct firmware **fw, bool async) +{ + char path[sizeof(modparam_fwpostfix) + 32]; + struct b43legacy_fw_header *hdr; + u32 size; + int err; + + if (!name) + return 0; + + snprintf(path, ARRAY_SIZE(path), + "b43legacy%s/%s.fw", + modparam_fwpostfix, name); + b43legacyinfo(dev->wl, "Loading firmware %s\n", path); + if (async) { + init_completion(&dev->fw_load_complete); + err = request_firmware_nowait(THIS_MODULE, 1, path, + dev->dev->dev, GFP_KERNEL, + dev, b43legacy_fw_cb); + if (err) { + b43legacyerr(dev->wl, "Unable to load firmware\n"); + return err; + } + /* stall here until fw ready */ + wait_for_completion(&dev->fw_load_complete); + if (!dev->fwp) + err = -EINVAL; + *fw = dev->fwp; + } else { + err = request_firmware(fw, path, dev->dev->dev); + } + if (err) { + b43legacyerr(dev->wl, "Firmware file \"%s\" not found " + "or load failed.\n", path); + return err; + } + if ((*fw)->size < sizeof(struct b43legacy_fw_header)) + goto err_format; + hdr = (struct b43legacy_fw_header *)((*fw)->data); + switch (hdr->type) { + case B43legacy_FW_TYPE_UCODE: + case B43legacy_FW_TYPE_PCM: + size = be32_to_cpu(hdr->size); + if (size != (*fw)->size - sizeof(struct b43legacy_fw_header)) + goto err_format; + fallthrough; + case B43legacy_FW_TYPE_IV: + if (hdr->ver != 1) + goto err_format; + break; + default: + goto err_format; + } + + return err; + +err_format: + b43legacyerr(dev->wl, "Firmware file \"%s\" format error.\n", path); + return -EPROTO; +} + +static int b43legacy_one_core_attach(struct ssb_device *dev, + struct b43legacy_wl *wl); +static void b43legacy_one_core_detach(struct ssb_device *dev); + +static void b43legacy_request_firmware(struct work_struct *work) +{ + struct b43legacy_wl *wl = container_of(work, + struct b43legacy_wl, firmware_load); + struct b43legacy_wldev *dev = wl->current_dev; + struct b43legacy_firmware *fw = &dev->fw; + const u8 rev = dev->dev->id.revision; + const char *filename; + int err; + + if (!fw->ucode) { + if (rev == 2) + filename = "ucode2"; + else if (rev == 4) + filename = "ucode4"; + else + filename = "ucode5"; + err = do_request_fw(dev, filename, &fw->ucode, true); + if (err) + goto err_load; + } + if (!fw->pcm) { + if (rev < 5) + filename = "pcm4"; + else + filename = "pcm5"; + err = do_request_fw(dev, filename, &fw->pcm, false); + if (err) + goto err_load; + } + if (!fw->initvals) { + switch (dev->phy.type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + if ((rev >= 5) && (rev <= 10)) + filename = "b0g0initvals5"; + else if (rev == 2 || rev == 4) + filename = "b0g0initvals2"; + else + goto err_no_initvals; + break; + default: + goto err_no_initvals; + } + err = do_request_fw(dev, filename, &fw->initvals, false); + if (err) + goto err_load; + } + if (!fw->initvals_band) { + switch (dev->phy.type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + if ((rev >= 5) && (rev <= 10)) + filename = "b0g0bsinitvals5"; + else if (rev >= 11) + filename = NULL; + else if (rev == 2 || rev == 4) + filename = NULL; + else + goto err_no_initvals; + break; + default: + goto err_no_initvals; + } + err = do_request_fw(dev, filename, &fw->initvals_band, false); + if (err) + goto err_load; + } + err = ieee80211_register_hw(wl->hw); + if (err) + goto err_one_core_detach; + return; + +err_one_core_detach: + b43legacy_one_core_detach(dev->dev); + goto error; + +err_load: + b43legacy_print_fw_helptext(dev->wl); + goto error; + +err_no_initvals: + err = -ENODEV; + b43legacyerr(dev->wl, "No Initial Values firmware file for PHY %u, " + "core rev %u\n", dev->phy.type, rev); + goto error; + +error: + b43legacy_release_firmware(dev); + return; +} + +static int b43legacy_upload_microcode(struct b43legacy_wldev *dev) +{ + struct wiphy *wiphy = dev->wl->hw->wiphy; + const size_t hdr_len = sizeof(struct b43legacy_fw_header); + const __be32 *data; + unsigned int i; + unsigned int len; + u16 fwrev; + u16 fwpatch; + u16 fwdate; + u16 fwtime; + u32 tmp, macctl; + int err = 0; + + /* Jump the microcode PSM to offset 0 */ + macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + B43legacy_WARN_ON(macctl & B43legacy_MACCTL_PSM_RUN); + macctl |= B43legacy_MACCTL_PSM_JMP0; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); + /* Zero out all microcode PSM registers and shared memory. */ + for (i = 0; i < 64; i++) + b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, i, 0); + for (i = 0; i < 4096; i += 2) + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, i, 0); + + /* Upload Microcode. */ + data = (__be32 *) (dev->fw.ucode->data + hdr_len); + len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32); + b43legacy_shm_control_word(dev, + B43legacy_SHM_UCODE | + B43legacy_SHM_AUTOINC_W, + 0x0000); + for (i = 0; i < len; i++) { + b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, + be32_to_cpu(data[i])); + udelay(10); + } + + if (dev->fw.pcm) { + /* Upload PCM data. */ + data = (__be32 *) (dev->fw.pcm->data + hdr_len); + len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32); + b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EA); + b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, 0x00004000); + /* No need for autoinc bit in SHM_HW */ + b43legacy_shm_control_word(dev, B43legacy_SHM_HW, 0x01EB); + for (i = 0; i < len; i++) { + b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, + be32_to_cpu(data[i])); + udelay(10); + } + } + + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, + B43legacy_IRQ_ALL); + + /* Start the microcode PSM */ + macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + macctl &= ~B43legacy_MACCTL_PSM_JMP0; + macctl |= B43legacy_MACCTL_PSM_RUN; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); + + /* Wait for the microcode to load and respond */ + i = 0; + while (1) { + tmp = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); + if (tmp == B43legacy_IRQ_MAC_SUSPENDED) + break; + i++; + if (i >= B43legacy_IRQWAIT_MAX_RETRIES) { + b43legacyerr(dev->wl, "Microcode not responding\n"); + b43legacy_print_fw_helptext(dev->wl); + err = -ENODEV; + goto error; + } + msleep_interruptible(50); + if (signal_pending(current)) { + err = -EINTR; + goto error; + } + } + /* dummy read follows */ + b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); + + /* Get and check the revisions. */ + fwrev = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_UCODEREV); + fwpatch = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_UCODEPATCH); + fwdate = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_UCODEDATE); + fwtime = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_UCODETIME); + + if (fwrev > 0x128) { + b43legacyerr(dev->wl, "YOU ARE TRYING TO LOAD V4 FIRMWARE." + " Only firmware from binary drivers version 3.x" + " is supported. You must change your firmware" + " files.\n"); + b43legacy_print_fw_helptext(dev->wl); + err = -EOPNOTSUPP; + goto error; + } + b43legacyinfo(dev->wl, "Loading firmware version 0x%X, patch level %u " + "(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n", fwrev, fwpatch, + (fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF, + (fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, + fwtime & 0x1F); + + dev->fw.rev = fwrev; + dev->fw.patch = fwpatch; + + snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "%u.%u", + dev->fw.rev, dev->fw.patch); + wiphy->hw_version = dev->dev->id.coreid; + + return 0; + +error: + macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + macctl &= ~B43legacy_MACCTL_PSM_RUN; + macctl |= B43legacy_MACCTL_PSM_JMP0; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); + + return err; +} + +static int b43legacy_write_initvals(struct b43legacy_wldev *dev, + const struct b43legacy_iv *ivals, + size_t count, + size_t array_size) +{ + const struct b43legacy_iv *iv; + u16 offset; + size_t i; + bool bit32; + + BUILD_BUG_ON(sizeof(struct b43legacy_iv) != 6); + iv = ivals; + for (i = 0; i < count; i++) { + if (array_size < sizeof(iv->offset_size)) + goto err_format; + array_size -= sizeof(iv->offset_size); + offset = be16_to_cpu(iv->offset_size); + bit32 = !!(offset & B43legacy_IV_32BIT); + offset &= B43legacy_IV_OFFSET_MASK; + if (offset >= 0x1000) + goto err_format; + if (bit32) { + u32 value; + + if (array_size < sizeof(iv->data.d32)) + goto err_format; + array_size -= sizeof(iv->data.d32); + + value = get_unaligned_be32(&iv->data.d32); + b43legacy_write32(dev, offset, value); + + iv = (const struct b43legacy_iv *)((const uint8_t *)iv + + sizeof(__be16) + + sizeof(__be32)); + } else { + u16 value; + + if (array_size < sizeof(iv->data.d16)) + goto err_format; + array_size -= sizeof(iv->data.d16); + + value = be16_to_cpu(iv->data.d16); + b43legacy_write16(dev, offset, value); + + iv = (const struct b43legacy_iv *)((const uint8_t *)iv + + sizeof(__be16) + + sizeof(__be16)); + } + } + if (array_size) + goto err_format; + + return 0; + +err_format: + b43legacyerr(dev->wl, "Initial Values Firmware file-format error.\n"); + b43legacy_print_fw_helptext(dev->wl); + + return -EPROTO; +} + +static int b43legacy_upload_initvals(struct b43legacy_wldev *dev) +{ + const size_t hdr_len = sizeof(struct b43legacy_fw_header); + const struct b43legacy_fw_header *hdr; + struct b43legacy_firmware *fw = &dev->fw; + const struct b43legacy_iv *ivals; + size_t count; + int err; + + hdr = (const struct b43legacy_fw_header *)(fw->initvals->data); + ivals = (const struct b43legacy_iv *)(fw->initvals->data + hdr_len); + count = be32_to_cpu(hdr->size); + err = b43legacy_write_initvals(dev, ivals, count, + fw->initvals->size - hdr_len); + if (err) + goto out; + if (fw->initvals_band) { + hdr = (const struct b43legacy_fw_header *) + (fw->initvals_band->data); + ivals = (const struct b43legacy_iv *)(fw->initvals_band->data + + hdr_len); + count = be32_to_cpu(hdr->size); + err = b43legacy_write_initvals(dev, ivals, count, + fw->initvals_band->size - hdr_len); + if (err) + goto out; + } +out: + + return err; +} + +/* Initialize the GPIOs + * https://bcm-specs.sipsolutions.net/GPIO + */ +static int b43legacy_gpio_init(struct b43legacy_wldev *dev) +{ + struct ssb_bus *bus = dev->dev->bus; + struct ssb_device *gpiodev, *pcidev = NULL; + u32 mask; + u32 set; + + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, + b43legacy_read32(dev, + B43legacy_MMIO_MACCTL) + & 0xFFFF3FFF); + + b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK, + b43legacy_read16(dev, + B43legacy_MMIO_GPIO_MASK) + | 0x000F); + + mask = 0x0000001F; + set = 0x0000000F; + if (dev->dev->bus->chip_id == 0x4301) { + mask |= 0x0060; + set |= 0x0060; + } + if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) { + b43legacy_write16(dev, B43legacy_MMIO_GPIO_MASK, + b43legacy_read16(dev, + B43legacy_MMIO_GPIO_MASK) + | 0x0200); + mask |= 0x0200; + set |= 0x0200; + } + if (dev->dev->id.revision >= 2) + mask |= 0x0010; /* FIXME: This is redundant. */ + +#ifdef CONFIG_SSB_DRIVER_PCICORE + pcidev = bus->pcicore.dev; +#endif + gpiodev = bus->chipco.dev ? : pcidev; + if (!gpiodev) + return 0; + ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, + (ssb_read32(gpiodev, B43legacy_GPIO_CONTROL) + & ~mask) | set); + + return 0; +} + +/* Turn off all GPIO stuff. Call this on module unload, for example. */ +static void b43legacy_gpio_cleanup(struct b43legacy_wldev *dev) +{ + struct ssb_bus *bus = dev->dev->bus; + struct ssb_device *gpiodev, *pcidev = NULL; + +#ifdef CONFIG_SSB_DRIVER_PCICORE + pcidev = bus->pcicore.dev; +#endif + gpiodev = bus->chipco.dev ? : pcidev; + if (!gpiodev) + return; + ssb_write32(gpiodev, B43legacy_GPIO_CONTROL, 0); +} + +/* http://bcm-specs.sipsolutions.net/EnableMac */ +void b43legacy_mac_enable(struct b43legacy_wldev *dev) +{ + dev->mac_suspended--; + B43legacy_WARN_ON(dev->mac_suspended < 0); + B43legacy_WARN_ON(irqs_disabled()); + if (dev->mac_suspended == 0) { + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, + b43legacy_read32(dev, + B43legacy_MMIO_MACCTL) + | B43legacy_MACCTL_ENABLED); + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, + B43legacy_IRQ_MAC_SUSPENDED); + /* the next two are dummy reads */ + b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); + b43legacy_power_saving_ctl_bits(dev, -1, -1); + + /* Re-enable IRQs. */ + spin_lock_irq(&dev->wl->irq_lock); + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, + dev->irq_mask); + spin_unlock_irq(&dev->wl->irq_lock); + } +} + +/* https://bcm-specs.sipsolutions.net/SuspendMAC */ +void b43legacy_mac_suspend(struct b43legacy_wldev *dev) +{ + int i; + u32 tmp; + + might_sleep(); + B43legacy_WARN_ON(irqs_disabled()); + B43legacy_WARN_ON(dev->mac_suspended < 0); + + if (dev->mac_suspended == 0) { + /* Mask IRQs before suspending MAC. Otherwise + * the MAC stays busy and won't suspend. */ + spin_lock_irq(&dev->wl->irq_lock); + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); + spin_unlock_irq(&dev->wl->irq_lock); + b43legacy_synchronize_irq(dev); + + b43legacy_power_saving_ctl_bits(dev, -1, 1); + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, + b43legacy_read32(dev, + B43legacy_MMIO_MACCTL) + & ~B43legacy_MACCTL_ENABLED); + b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); + for (i = 40; i; i--) { + tmp = b43legacy_read32(dev, + B43legacy_MMIO_GEN_IRQ_REASON); + if (tmp & B43legacy_IRQ_MAC_SUSPENDED) + goto out; + msleep(1); + } + b43legacyerr(dev->wl, "MAC suspend failed\n"); + } +out: + dev->mac_suspended++; +} + +static void b43legacy_adjust_opmode(struct b43legacy_wldev *dev) +{ + struct b43legacy_wl *wl = dev->wl; + u32 ctl; + u16 cfp_pretbtt; + + ctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + /* Reset status to STA infrastructure mode. */ + ctl &= ~B43legacy_MACCTL_AP; + ctl &= ~B43legacy_MACCTL_KEEP_CTL; + ctl &= ~B43legacy_MACCTL_KEEP_BADPLCP; + ctl &= ~B43legacy_MACCTL_KEEP_BAD; + ctl &= ~B43legacy_MACCTL_PROMISC; + ctl &= ~B43legacy_MACCTL_BEACPROMISC; + ctl |= B43legacy_MACCTL_INFRA; + + if (b43legacy_is_mode(wl, NL80211_IFTYPE_AP)) + ctl |= B43legacy_MACCTL_AP; + else if (b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC)) + ctl &= ~B43legacy_MACCTL_INFRA; + + if (wl->filter_flags & FIF_CONTROL) + ctl |= B43legacy_MACCTL_KEEP_CTL; + if (wl->filter_flags & FIF_FCSFAIL) + ctl |= B43legacy_MACCTL_KEEP_BAD; + if (wl->filter_flags & FIF_PLCPFAIL) + ctl |= B43legacy_MACCTL_KEEP_BADPLCP; + if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC) + ctl |= B43legacy_MACCTL_BEACPROMISC; + + /* Workaround: On old hardware the HW-MAC-address-filter + * doesn't work properly, so always run promisc in filter + * it in software. */ + if (dev->dev->id.revision <= 4) + ctl |= B43legacy_MACCTL_PROMISC; + + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, ctl); + + cfp_pretbtt = 2; + if ((ctl & B43legacy_MACCTL_INFRA) && + !(ctl & B43legacy_MACCTL_AP)) { + if (dev->dev->bus->chip_id == 0x4306 && + dev->dev->bus->chip_rev == 3) + cfp_pretbtt = 100; + else + cfp_pretbtt = 50; + } + b43legacy_write16(dev, 0x612, cfp_pretbtt); +} + +static void b43legacy_rate_memory_write(struct b43legacy_wldev *dev, + u16 rate, + int is_ofdm) +{ + u16 offset; + + if (is_ofdm) { + offset = 0x480; + offset += (b43legacy_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2; + } else { + offset = 0x4C0; + offset += (b43legacy_plcp_get_ratecode_cck(rate) & 0x000F) * 2; + } + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, offset + 0x20, + b43legacy_shm_read16(dev, + B43legacy_SHM_SHARED, offset)); +} + +static void b43legacy_rate_memory_init(struct b43legacy_wldev *dev) +{ + switch (dev->phy.type) { + case B43legacy_PHYTYPE_G: + b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_6MB, 1); + b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_12MB, 1); + b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_18MB, 1); + b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_24MB, 1); + b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_36MB, 1); + b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_48MB, 1); + b43legacy_rate_memory_write(dev, B43legacy_OFDM_RATE_54MB, 1); + fallthrough; + case B43legacy_PHYTYPE_B: + b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_1MB, 0); + b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_2MB, 0); + b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_5MB, 0); + b43legacy_rate_memory_write(dev, B43legacy_CCK_RATE_11MB, 0); + break; + default: + B43legacy_BUG_ON(1); + } +} + +/* Set the TX-Antenna for management frames sent by firmware. */ +static void b43legacy_mgmtframe_txantenna(struct b43legacy_wldev *dev, + int antenna) +{ + u16 ant = 0; + u16 tmp; + + switch (antenna) { + case B43legacy_ANTENNA0: + ant |= B43legacy_TX4_PHY_ANT0; + break; + case B43legacy_ANTENNA1: + ant |= B43legacy_TX4_PHY_ANT1; + break; + case B43legacy_ANTENNA_AUTO: + ant |= B43legacy_TX4_PHY_ANTLAST; + break; + default: + B43legacy_BUG_ON(1); + } + + /* FIXME We also need to set the other flags of the PHY control + * field somewhere. */ + + /* For Beacons */ + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_BEACPHYCTL); + tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_BEACPHYCTL, tmp); + /* For ACK/CTS */ + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_ACKCTSPHYCTL); + tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_ACKCTSPHYCTL, tmp); + /* For Probe Resposes */ + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_PRPHYCTL); + tmp = (tmp & ~B43legacy_TX4_PHY_ANT) | ant; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_PRPHYCTL, tmp); +} + +/* This is the opposite of b43legacy_chip_init() */ +static void b43legacy_chip_exit(struct b43legacy_wldev *dev) +{ + b43legacy_radio_turn_off(dev, 1); + b43legacy_gpio_cleanup(dev); + /* firmware is released later */ +} + +/* Initialize the chip + * https://bcm-specs.sipsolutions.net/ChipInit + */ +static int b43legacy_chip_init(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + int err; + int tmp; + u32 value32, macctl; + u16 value16; + + /* Initialize the MAC control */ + macctl = B43legacy_MACCTL_IHR_ENABLED | B43legacy_MACCTL_SHM_ENABLED; + if (dev->phy.gmode) + macctl |= B43legacy_MACCTL_GMODE; + macctl |= B43legacy_MACCTL_INFRA; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); + + err = b43legacy_upload_microcode(dev); + if (err) + goto out; /* firmware is released later */ + + err = b43legacy_gpio_init(dev); + if (err) + goto out; /* firmware is released later */ + + err = b43legacy_upload_initvals(dev); + if (err) + goto err_gpio_clean; + b43legacy_radio_turn_on(dev); + + b43legacy_write16(dev, 0x03E6, 0x0000); + err = b43legacy_phy_init(dev); + if (err) + goto err_radio_off; + + /* Select initial Interference Mitigation. */ + tmp = phy->interfmode; + phy->interfmode = B43legacy_INTERFMODE_NONE; + b43legacy_radio_set_interference_mitigation(dev, tmp); + + b43legacy_phy_set_antenna_diversity(dev); + b43legacy_mgmtframe_txantenna(dev, B43legacy_ANTENNA_DEFAULT); + + if (phy->type == B43legacy_PHYTYPE_B) { + value16 = b43legacy_read16(dev, 0x005E); + value16 |= 0x0004; + b43legacy_write16(dev, 0x005E, value16); + } + b43legacy_write32(dev, 0x0100, 0x01000000); + if (dev->dev->id.revision < 5) + b43legacy_write32(dev, 0x010C, 0x01000000); + + value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + value32 &= ~B43legacy_MACCTL_INFRA; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32); + value32 = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + value32 |= B43legacy_MACCTL_INFRA; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value32); + + if (b43legacy_using_pio(dev)) { + b43legacy_write32(dev, 0x0210, 0x00000100); + b43legacy_write32(dev, 0x0230, 0x00000100); + b43legacy_write32(dev, 0x0250, 0x00000100); + b43legacy_write32(dev, 0x0270, 0x00000100); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0034, + 0x0000); + } + + /* Probe Response Timeout value */ + /* FIXME: Default to 0, has to be set by ioctl probably... :-/ */ + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0074, 0x0000); + + /* Initially set the wireless operation mode. */ + b43legacy_adjust_opmode(dev); + + if (dev->dev->id.revision < 3) { + b43legacy_write16(dev, 0x060E, 0x0000); + b43legacy_write16(dev, 0x0610, 0x8000); + b43legacy_write16(dev, 0x0604, 0x0000); + b43legacy_write16(dev, 0x0606, 0x0200); + } else { + b43legacy_write32(dev, 0x0188, 0x80000000); + b43legacy_write32(dev, 0x018C, 0x02000000); + } + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_REASON, 0x00004000); + b43legacy_write32(dev, B43legacy_MMIO_DMA0_IRQ_MASK, 0x0001DC00); + b43legacy_write32(dev, B43legacy_MMIO_DMA1_IRQ_MASK, 0x0000DC00); + b43legacy_write32(dev, B43legacy_MMIO_DMA2_IRQ_MASK, 0x0000DC00); + b43legacy_write32(dev, B43legacy_MMIO_DMA3_IRQ_MASK, 0x0001DC00); + b43legacy_write32(dev, B43legacy_MMIO_DMA4_IRQ_MASK, 0x0000DC00); + b43legacy_write32(dev, B43legacy_MMIO_DMA5_IRQ_MASK, 0x0000DC00); + + value32 = ssb_read32(dev->dev, SSB_TMSLOW); + value32 |= B43legacy_TMSLOW_MACPHYCLKEN; + ssb_write32(dev->dev, SSB_TMSLOW, value32); + + b43legacy_write16(dev, B43legacy_MMIO_POWERUP_DELAY, + dev->dev->bus->chipco.fast_pwrup_delay); + + /* PHY TX errors counter. */ + atomic_set(&phy->txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); + + B43legacy_WARN_ON(err != 0); + b43legacydbg(dev->wl, "Chip initialized\n"); +out: + return err; + +err_radio_off: + b43legacy_radio_turn_off(dev, 1); +err_gpio_clean: + b43legacy_gpio_cleanup(dev); + goto out; +} + +static void b43legacy_periodic_every120sec(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (phy->type != B43legacy_PHYTYPE_G || phy->rev < 2) + return; + + b43legacy_mac_suspend(dev); + b43legacy_phy_lo_g_measure(dev); + b43legacy_mac_enable(dev); +} + +static void b43legacy_periodic_every60sec(struct b43legacy_wldev *dev) +{ + b43legacy_phy_lo_mark_all_unused(dev); + if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) { + b43legacy_mac_suspend(dev); + b43legacy_calc_nrssi_slope(dev); + b43legacy_mac_enable(dev); + } +} + +static void b43legacy_periodic_every30sec(struct b43legacy_wldev *dev) +{ + /* Update device statistics. */ + b43legacy_calculate_link_quality(dev); +} + +static void b43legacy_periodic_every15sec(struct b43legacy_wldev *dev) +{ + b43legacy_phy_xmitpower(dev); /* FIXME: unless scanning? */ + + atomic_set(&dev->phy.txerr_cnt, B43legacy_PHY_TX_BADNESS_LIMIT); + wmb(); +} + +static void do_periodic_work(struct b43legacy_wldev *dev) +{ + unsigned int state; + + state = dev->periodic_state; + if (state % 8 == 0) + b43legacy_periodic_every120sec(dev); + if (state % 4 == 0) + b43legacy_periodic_every60sec(dev); + if (state % 2 == 0) + b43legacy_periodic_every30sec(dev); + b43legacy_periodic_every15sec(dev); +} + +/* Periodic work locking policy: + * The whole periodic work handler is protected by + * wl->mutex. If another lock is needed somewhere in the + * pwork callchain, it's acquired in-place, where it's needed. + */ +static void b43legacy_periodic_work_handler(struct work_struct *work) +{ + struct b43legacy_wldev *dev = container_of(work, struct b43legacy_wldev, + periodic_work.work); + struct b43legacy_wl *wl = dev->wl; + unsigned long delay; + + mutex_lock(&wl->mutex); + + if (unlikely(b43legacy_status(dev) != B43legacy_STAT_STARTED)) + goto out; + if (b43legacy_debug(dev, B43legacy_DBG_PWORK_STOP)) + goto out_requeue; + + do_periodic_work(dev); + + dev->periodic_state++; +out_requeue: + if (b43legacy_debug(dev, B43legacy_DBG_PWORK_FAST)) + delay = msecs_to_jiffies(50); + else + delay = round_jiffies_relative(HZ * 15); + ieee80211_queue_delayed_work(wl->hw, &dev->periodic_work, delay); +out: + mutex_unlock(&wl->mutex); +} + +static void b43legacy_periodic_tasks_setup(struct b43legacy_wldev *dev) +{ + struct delayed_work *work = &dev->periodic_work; + + dev->periodic_state = 0; + INIT_DELAYED_WORK(work, b43legacy_periodic_work_handler); + ieee80211_queue_delayed_work(dev->wl->hw, work, 0); +} + +/* Validate access to the chip (SHM) */ +static int b43legacy_validate_chipaccess(struct b43legacy_wldev *dev) +{ + u32 value; + u32 shm_backup; + + shm_backup = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0); + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0xAA5555AA); + if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) != + 0xAA5555AA) + goto error; + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, 0x55AAAA55); + if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, 0) != + 0x55AAAA55) + goto error; + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, 0, shm_backup); + + value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + if ((value | B43legacy_MACCTL_GMODE) != + (B43legacy_MACCTL_GMODE | B43legacy_MACCTL_IHR_ENABLED)) + goto error; + + value = b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_REASON); + if (value) + goto error; + + return 0; +error: + b43legacyerr(dev->wl, "Failed to validate the chipaccess\n"); + return -ENODEV; +} + +static void b43legacy_security_init(struct b43legacy_wldev *dev) +{ + dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20; + B43legacy_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key)); + dev->ktp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + 0x0056); + /* KTP is a word address, but we address SHM bytewise. + * So multiply by two. + */ + dev->ktp *= 2; + if (dev->dev->id.revision >= 5) + /* Number of RCMTA address slots */ + b43legacy_write16(dev, B43legacy_MMIO_RCMTA_COUNT, + dev->max_nr_keys - 8); +} + +#ifdef CONFIG_B43LEGACY_HWRNG +static int b43legacy_rng_read(struct hwrng *rng, u32 *data) +{ + struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv; + unsigned long flags; + + /* Don't take wl->mutex here, as it could deadlock with + * hwrng internal locking. It's not needed to take + * wl->mutex here, anyway. */ + + spin_lock_irqsave(&wl->irq_lock, flags); + *data = b43legacy_read16(wl->current_dev, B43legacy_MMIO_RNG); + spin_unlock_irqrestore(&wl->irq_lock, flags); + + return (sizeof(u16)); +} +#endif + +static void b43legacy_rng_exit(struct b43legacy_wl *wl) +{ +#ifdef CONFIG_B43LEGACY_HWRNG + if (wl->rng_initialized) + hwrng_unregister(&wl->rng); +#endif +} + +static int b43legacy_rng_init(struct b43legacy_wl *wl) +{ + int err = 0; + +#ifdef CONFIG_B43LEGACY_HWRNG + snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name), + "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy)); + wl->rng.name = wl->rng_name; + wl->rng.data_read = b43legacy_rng_read; + wl->rng.priv = (unsigned long)wl; + wl->rng_initialized = 1; + err = hwrng_register(&wl->rng); + if (err) { + wl->rng_initialized = 0; + b43legacyerr(wl, "Failed to register the random " + "number generator (%d)\n", err); + } + +#endif + return err; +} + +static void b43legacy_tx_work(struct work_struct *work) +{ + struct b43legacy_wl *wl = container_of(work, struct b43legacy_wl, + tx_work); + struct b43legacy_wldev *dev; + struct sk_buff *skb; + int queue_num; + int err = 0; + + mutex_lock(&wl->mutex); + dev = wl->current_dev; + if (unlikely(!dev || b43legacy_status(dev) < B43legacy_STAT_STARTED)) { + mutex_unlock(&wl->mutex); + return; + } + + for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { + while (skb_queue_len(&wl->tx_queue[queue_num])) { + skb = skb_dequeue(&wl->tx_queue[queue_num]); + if (b43legacy_using_pio(dev)) + err = b43legacy_pio_tx(dev, skb); + else + err = b43legacy_dma_tx(dev, skb); + if (err == -ENOSPC) { + wl->tx_queue_stopped[queue_num] = 1; + ieee80211_stop_queue(wl->hw, queue_num); + skb_queue_head(&wl->tx_queue[queue_num], skb); + break; + } + if (unlikely(err)) + dev_kfree_skb(skb); /* Drop it */ + err = 0; + } + + if (!err) + wl->tx_queue_stopped[queue_num] = 0; + } + + mutex_unlock(&wl->mutex); +} + +static void b43legacy_op_tx(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + + if (unlikely(skb->len < 2 + 2 + 6)) { + /* Too short, this can't be a valid frame. */ + dev_kfree_skb_any(skb); + return; + } + B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags); + + skb_queue_tail(&wl->tx_queue[skb->queue_mapping], skb); + if (!wl->tx_queue_stopped[skb->queue_mapping]) + ieee80211_queue_work(wl->hw, &wl->tx_work); + else + ieee80211_stop_queue(wl->hw, skb->queue_mapping); +} + +static int b43legacy_op_conf_tx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u16 queue, + const struct ieee80211_tx_queue_params *params) +{ + return 0; +} + +static int b43legacy_op_get_stats(struct ieee80211_hw *hw, + struct ieee80211_low_level_stats *stats) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + unsigned long flags; + + spin_lock_irqsave(&wl->irq_lock, flags); + memcpy(stats, &wl->ieee_stats, sizeof(*stats)); + spin_unlock_irqrestore(&wl->irq_lock, flags); + + return 0; +} + +static const char *phymode_to_string(unsigned int phymode) +{ + switch (phymode) { + case B43legacy_PHYMODE_B: + return "B"; + case B43legacy_PHYMODE_G: + return "G"; + default: + B43legacy_BUG_ON(1); + } + return ""; +} + +static int find_wldev_for_phymode(struct b43legacy_wl *wl, + unsigned int phymode, + struct b43legacy_wldev **dev, + bool *gmode) +{ + struct b43legacy_wldev *d; + + list_for_each_entry(d, &wl->devlist, list) { + if (d->phy.possible_phymodes & phymode) { + /* Ok, this device supports the PHY-mode. + * Set the gmode bit. */ + *gmode = true; + *dev = d; + + return 0; + } + } + + return -ESRCH; +} + +static void b43legacy_put_phy_into_reset(struct b43legacy_wldev *dev) +{ + struct ssb_device *sdev = dev->dev; + u32 tmslow; + + tmslow = ssb_read32(sdev, SSB_TMSLOW); + tmslow &= ~B43legacy_TMSLOW_GMODE; + tmslow |= B43legacy_TMSLOW_PHYRESET; + tmslow |= SSB_TMSLOW_FGC; + ssb_write32(sdev, SSB_TMSLOW, tmslow); + msleep(1); + + tmslow = ssb_read32(sdev, SSB_TMSLOW); + tmslow &= ~SSB_TMSLOW_FGC; + tmslow |= B43legacy_TMSLOW_PHYRESET; + ssb_write32(sdev, SSB_TMSLOW, tmslow); + msleep(1); +} + +/* Expects wl->mutex locked */ +static int b43legacy_switch_phymode(struct b43legacy_wl *wl, + unsigned int new_mode) +{ + struct b43legacy_wldev *up_dev; + struct b43legacy_wldev *down_dev; + int err; + bool gmode = false; + int prev_status; + + err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode); + if (err) { + b43legacyerr(wl, "Could not find a device for %s-PHY mode\n", + phymode_to_string(new_mode)); + return err; + } + if ((up_dev == wl->current_dev) && + (!!wl->current_dev->phy.gmode == !!gmode)) + /* This device is already running. */ + return 0; + b43legacydbg(wl, "Reconfiguring PHYmode to %s-PHY\n", + phymode_to_string(new_mode)); + down_dev = wl->current_dev; + + prev_status = b43legacy_status(down_dev); + /* Shutdown the currently running core. */ + if (prev_status >= B43legacy_STAT_STARTED) + b43legacy_wireless_core_stop(down_dev); + if (prev_status >= B43legacy_STAT_INITIALIZED) + b43legacy_wireless_core_exit(down_dev); + + if (down_dev != up_dev) + /* We switch to a different core, so we put PHY into + * RESET on the old core. */ + b43legacy_put_phy_into_reset(down_dev); + + /* Now start the new core. */ + up_dev->phy.gmode = gmode; + if (prev_status >= B43legacy_STAT_INITIALIZED) { + err = b43legacy_wireless_core_init(up_dev); + if (err) { + b43legacyerr(wl, "Fatal: Could not initialize device" + " for newly selected %s-PHY mode\n", + phymode_to_string(new_mode)); + goto init_failure; + } + } + if (prev_status >= B43legacy_STAT_STARTED) { + err = b43legacy_wireless_core_start(up_dev); + if (err) { + b43legacyerr(wl, "Fatal: Could not start device for " + "newly selected %s-PHY mode\n", + phymode_to_string(new_mode)); + b43legacy_wireless_core_exit(up_dev); + goto init_failure; + } + } + B43legacy_WARN_ON(b43legacy_status(up_dev) != prev_status); + + b43legacy_shm_write32(up_dev, B43legacy_SHM_SHARED, 0x003E, 0); + + wl->current_dev = up_dev; + + return 0; +init_failure: + /* Whoops, failed to init the new core. No core is operating now. */ + wl->current_dev = NULL; + return err; +} + +/* Write the short and long frame retry limit values. */ +static void b43legacy_set_retry_limits(struct b43legacy_wldev *dev, + unsigned int short_retry, + unsigned int long_retry) +{ + /* The retry limit is a 4-bit counter. Enforce this to avoid overflowing + * the chip-internal counter. */ + short_retry = min(short_retry, (unsigned int)0xF); + long_retry = min(long_retry, (unsigned int)0xF); + + b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0006, short_retry); + b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, 0x0007, long_retry); +} + +static int b43legacy_op_dev_config(struct ieee80211_hw *hw, + u32 changed) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev; + struct b43legacy_phy *phy; + struct ieee80211_conf *conf = &hw->conf; + unsigned long flags; + unsigned int new_phymode = 0xFFFF; + int antenna_tx; + int err = 0; + + antenna_tx = B43legacy_ANTENNA_DEFAULT; + + mutex_lock(&wl->mutex); + dev = wl->current_dev; + phy = &dev->phy; + + if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) + b43legacy_set_retry_limits(dev, + conf->short_frame_max_tx_count, + conf->long_frame_max_tx_count); + changed &= ~IEEE80211_CONF_CHANGE_RETRY_LIMITS; + if (!changed) + goto out_unlock_mutex; + + /* Switch the PHY mode (if necessary). */ + switch (conf->chandef.chan->band) { + case NL80211_BAND_2GHZ: + if (phy->type == B43legacy_PHYTYPE_B) + new_phymode = B43legacy_PHYMODE_B; + else + new_phymode = B43legacy_PHYMODE_G; + break; + default: + B43legacy_WARN_ON(1); + } + err = b43legacy_switch_phymode(wl, new_phymode); + if (err) + goto out_unlock_mutex; + + /* Disable IRQs while reconfiguring the device. + * This makes it possible to drop the spinlock throughout + * the reconfiguration process. */ + spin_lock_irqsave(&wl->irq_lock, flags); + if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { + spin_unlock_irqrestore(&wl->irq_lock, flags); + goto out_unlock_mutex; + } + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); + spin_unlock_irqrestore(&wl->irq_lock, flags); + b43legacy_synchronize_irq(dev); + + /* Switch to the requested channel. + * The firmware takes care of races with the TX handler. */ + if (conf->chandef.chan->hw_value != phy->channel) + b43legacy_radio_selectchannel(dev, conf->chandef.chan->hw_value, + 0); + + dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_MONITOR); + + /* Adjust the desired TX power level. */ + if (conf->power_level != 0) { + if (conf->power_level != phy->power_level) { + phy->power_level = conf->power_level; + b43legacy_phy_xmitpower(dev); + } + } + + /* Antennas for RX and management frame TX. */ + b43legacy_mgmtframe_txantenna(dev, antenna_tx); + + if (wl->radio_enabled != phy->radio_on) { + if (wl->radio_enabled) { + b43legacy_radio_turn_on(dev); + b43legacyinfo(dev->wl, "Radio turned on by software\n"); + if (!dev->radio_hw_enable) + b43legacyinfo(dev->wl, "The hardware RF-kill" + " button still turns the radio" + " physically off. Press the" + " button to turn it on.\n"); + } else { + b43legacy_radio_turn_off(dev, 0); + b43legacyinfo(dev->wl, "Radio turned off by" + " software\n"); + } + } + + spin_lock_irqsave(&wl->irq_lock, flags); + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); + spin_unlock_irqrestore(&wl->irq_lock, flags); +out_unlock_mutex: + mutex_unlock(&wl->mutex); + + return err; +} + +static void b43legacy_update_basic_rates(struct b43legacy_wldev *dev, u32 brates) +{ + struct ieee80211_supported_band *sband = + dev->wl->hw->wiphy->bands[NL80211_BAND_2GHZ]; + struct ieee80211_rate *rate; + int i; + u16 basic, direct, offset, basic_offset, rateptr; + + for (i = 0; i < sband->n_bitrates; i++) { + rate = &sband->bitrates[i]; + + if (b43legacy_is_cck_rate(rate->hw_value)) { + direct = B43legacy_SHM_SH_CCKDIRECT; + basic = B43legacy_SHM_SH_CCKBASIC; + offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value); + offset &= 0xF; + } else { + direct = B43legacy_SHM_SH_OFDMDIRECT; + basic = B43legacy_SHM_SH_OFDMBASIC; + offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value); + offset &= 0xF; + } + + rate = ieee80211_get_response_rate(sband, brates, rate->bitrate); + + if (b43legacy_is_cck_rate(rate->hw_value)) { + basic_offset = b43legacy_plcp_get_ratecode_cck(rate->hw_value); + basic_offset &= 0xF; + } else { + basic_offset = b43legacy_plcp_get_ratecode_ofdm(rate->hw_value); + basic_offset &= 0xF; + } + + /* + * Get the pointer that we need to point to + * from the direct map + */ + rateptr = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + direct + 2 * basic_offset); + /* and write it to the basic map */ + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + basic + 2 * offset, rateptr); + } +} + +static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *conf, + u32 changed) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev; + unsigned long flags; + + mutex_lock(&wl->mutex); + B43legacy_WARN_ON(wl->vif != vif); + + dev = wl->current_dev; + + /* Disable IRQs while reconfiguring the device. + * This makes it possible to drop the spinlock throughout + * the reconfiguration process. */ + spin_lock_irqsave(&wl->irq_lock, flags); + if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { + spin_unlock_irqrestore(&wl->irq_lock, flags); + goto out_unlock_mutex; + } + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); + + if (changed & BSS_CHANGED_BSSID) { + b43legacy_synchronize_irq(dev); + + if (conf->bssid) + memcpy(wl->bssid, conf->bssid, ETH_ALEN); + else + eth_zero_addr(wl->bssid); + } + + if (b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) { + if (changed & BSS_CHANGED_BEACON && + (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) || + b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))) + b43legacy_update_templates(wl); + + if (changed & BSS_CHANGED_BSSID) + b43legacy_write_mac_bssid_templates(dev); + } + spin_unlock_irqrestore(&wl->irq_lock, flags); + + b43legacy_mac_suspend(dev); + + if (changed & BSS_CHANGED_BEACON_INT && + (b43legacy_is_mode(wl, NL80211_IFTYPE_AP) || + b43legacy_is_mode(wl, NL80211_IFTYPE_ADHOC))) + b43legacy_set_beacon_int(dev, conf->beacon_int); + + if (changed & BSS_CHANGED_BASIC_RATES) + b43legacy_update_basic_rates(dev, conf->basic_rates); + + if (changed & BSS_CHANGED_ERP_SLOT) { + if (conf->use_short_slot) + b43legacy_short_slot_timing_enable(dev); + else + b43legacy_short_slot_timing_disable(dev); + } + + b43legacy_mac_enable(dev); + + spin_lock_irqsave(&wl->irq_lock, flags); + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); + /* XXX: why? */ + spin_unlock_irqrestore(&wl->irq_lock, flags); + out_unlock_mutex: + mutex_unlock(&wl->mutex); +} + +static void b43legacy_op_configure_filter(struct ieee80211_hw *hw, + unsigned int changed, + unsigned int *fflags,u64 multicast) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev = wl->current_dev; + unsigned long flags; + + if (!dev) { + *fflags = 0; + return; + } + + spin_lock_irqsave(&wl->irq_lock, flags); + *fflags &= FIF_ALLMULTI | + FIF_FCSFAIL | + FIF_PLCPFAIL | + FIF_CONTROL | + FIF_OTHER_BSS | + FIF_BCN_PRBRESP_PROMISC; + + changed &= FIF_ALLMULTI | + FIF_FCSFAIL | + FIF_PLCPFAIL | + FIF_CONTROL | + FIF_OTHER_BSS | + FIF_BCN_PRBRESP_PROMISC; + + wl->filter_flags = *fflags; + + if (changed && b43legacy_status(dev) >= B43legacy_STAT_INITIALIZED) + b43legacy_adjust_opmode(dev); + spin_unlock_irqrestore(&wl->irq_lock, flags); +} + +/* Locking: wl->mutex */ +static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev) +{ + struct b43legacy_wl *wl = dev->wl; + unsigned long flags; + int queue_num; + + if (b43legacy_status(dev) < B43legacy_STAT_STARTED) + return; + + /* Disable and sync interrupts. We must do this before than + * setting the status to INITIALIZED, as the interrupt handler + * won't care about IRQs then. */ + spin_lock_irqsave(&wl->irq_lock, flags); + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, 0); + b43legacy_read32(dev, B43legacy_MMIO_GEN_IRQ_MASK); /* flush */ + spin_unlock_irqrestore(&wl->irq_lock, flags); + b43legacy_synchronize_irq(dev); + + b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED); + + mutex_unlock(&wl->mutex); + /* Must unlock as it would otherwise deadlock. No races here. + * Cancel the possibly running self-rearming periodic work. */ + cancel_delayed_work_sync(&dev->periodic_work); + cancel_work_sync(&wl->tx_work); + mutex_lock(&wl->mutex); + + /* Drain all TX queues. */ + for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { + while (skb_queue_len(&wl->tx_queue[queue_num])) + dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num])); + } + +b43legacy_mac_suspend(dev); + free_irq(dev->dev->irq, dev); + b43legacydbg(wl, "Wireless interface stopped\n"); +} + +/* Locking: wl->mutex */ +static int b43legacy_wireless_core_start(struct b43legacy_wldev *dev) +{ + int err; + + B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_INITIALIZED); + + drain_txstatus_queue(dev); + err = request_irq(dev->dev->irq, b43legacy_interrupt_handler, + IRQF_SHARED, KBUILD_MODNAME, dev); + if (err) { + b43legacyerr(dev->wl, "Cannot request IRQ-%d\n", + dev->dev->irq); + goto out; + } + /* We are ready to run. */ + ieee80211_wake_queues(dev->wl->hw); + b43legacy_set_status(dev, B43legacy_STAT_STARTED); + + /* Start data flow (TX/RX) */ + b43legacy_mac_enable(dev); + b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask); + + /* Start maintenance work */ + b43legacy_periodic_tasks_setup(dev); + + b43legacydbg(dev->wl, "Wireless interface started\n"); +out: + return err; +} + +/* Get PHY and RADIO versioning numbers */ +static int b43legacy_phy_versioning(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u32 tmp; + u8 analog_type; + u8 phy_type; + u8 phy_rev; + u16 radio_manuf; + u16 radio_ver; + u16 radio_rev; + int unsupported = 0; + + /* Get PHY versioning */ + tmp = b43legacy_read16(dev, B43legacy_MMIO_PHY_VER); + analog_type = (tmp & B43legacy_PHYVER_ANALOG) + >> B43legacy_PHYVER_ANALOG_SHIFT; + phy_type = (tmp & B43legacy_PHYVER_TYPE) >> B43legacy_PHYVER_TYPE_SHIFT; + phy_rev = (tmp & B43legacy_PHYVER_VERSION); + switch (phy_type) { + case B43legacy_PHYTYPE_B: + if (phy_rev != 2 && phy_rev != 4 + && phy_rev != 6 && phy_rev != 7) + unsupported = 1; + break; + case B43legacy_PHYTYPE_G: + if (phy_rev > 8) + unsupported = 1; + break; + default: + unsupported = 1; + } + if (unsupported) { + b43legacyerr(dev->wl, "FOUND UNSUPPORTED PHY " + "(Analog %u, Type %u, Revision %u)\n", + analog_type, phy_type, phy_rev); + return -EOPNOTSUPP; + } + b43legacydbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n", + analog_type, phy_type, phy_rev); + + + /* Get RADIO versioning */ + if (dev->dev->bus->chip_id == 0x4317) { + if (dev->dev->bus->chip_rev == 0) + tmp = 0x3205017F; + else if (dev->dev->bus->chip_rev == 1) + tmp = 0x4205017F; + else + tmp = 0x5205017F; + } else { + b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, + B43legacy_RADIOCTL_ID); + tmp = b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_HIGH); + tmp <<= 16; + b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, + B43legacy_RADIOCTL_ID); + tmp |= b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW); + } + radio_manuf = (tmp & 0x00000FFF); + radio_ver = (tmp & 0x0FFFF000) >> 12; + radio_rev = (tmp & 0xF0000000) >> 28; + switch (phy_type) { + case B43legacy_PHYTYPE_B: + if ((radio_ver & 0xFFF0) != 0x2050) + unsupported = 1; + break; + case B43legacy_PHYTYPE_G: + if (radio_ver != 0x2050) + unsupported = 1; + break; + default: + B43legacy_BUG_ON(1); + } + if (unsupported) { + b43legacyerr(dev->wl, "FOUND UNSUPPORTED RADIO " + "(Manuf 0x%X, Version 0x%X, Revision %u)\n", + radio_manuf, radio_ver, radio_rev); + return -EOPNOTSUPP; + } + b43legacydbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X," + " Revision %u\n", radio_manuf, radio_ver, radio_rev); + + + phy->radio_manuf = radio_manuf; + phy->radio_ver = radio_ver; + phy->radio_rev = radio_rev; + + phy->analog = analog_type; + phy->type = phy_type; + phy->rev = phy_rev; + + return 0; +} + +static void setup_struct_phy_for_init(struct b43legacy_wldev *dev, + struct b43legacy_phy *phy) +{ + struct b43legacy_lopair *lo; + int i; + + memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); + memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); + + /* Assume the radio is enabled. If it's not enabled, the state will + * immediately get fixed on the first periodic work run. */ + dev->radio_hw_enable = true; + + phy->savedpctlreg = 0xFFFF; + phy->aci_enable = false; + phy->aci_wlan_automatic = false; + phy->aci_hw_rssi = false; + + lo = phy->_lo_pairs; + if (lo) + memset(lo, 0, sizeof(struct b43legacy_lopair) * + B43legacy_LO_COUNT); + phy->max_lb_gain = 0; + phy->trsw_rx_gain = 0; + + /* Set default attenuation values. */ + phy->bbatt = b43legacy_default_baseband_attenuation(dev); + phy->rfatt = b43legacy_default_radio_attenuation(dev); + phy->txctl1 = b43legacy_default_txctl1(dev); + phy->txpwr_offset = 0; + + /* NRSSI */ + phy->nrssislope = 0; + for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) + phy->nrssi[i] = -1000; + for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) + phy->nrssi_lt[i] = i; + + phy->lofcal = 0xFFFF; + phy->initval = 0xFFFF; + + phy->interfmode = B43legacy_INTERFMODE_NONE; + phy->channel = 0xFF; +} + +static void setup_struct_wldev_for_init(struct b43legacy_wldev *dev) +{ + /* Flags */ + dev->dfq_valid = false; + + /* Stats */ + memset(&dev->stats, 0, sizeof(dev->stats)); + + setup_struct_phy_for_init(dev, &dev->phy); + + /* IRQ related flags */ + dev->irq_reason = 0; + memset(dev->dma_reason, 0, sizeof(dev->dma_reason)); + dev->irq_mask = B43legacy_IRQ_MASKTEMPLATE; + + dev->mac_suspended = 1; + + /* Noise calculation context */ + memset(&dev->noisecalc, 0, sizeof(dev->noisecalc)); +} + +static void b43legacy_set_synth_pu_delay(struct b43legacy_wldev *dev, + bool idle) { + u16 pu_delay = 1050; + + if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC) || idle) + pu_delay = 500; + if ((dev->phy.radio_ver == 0x2050) && (dev->phy.radio_rev == 8)) + pu_delay = max(pu_delay, (u16)2400); + + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_SPUWKUP, pu_delay); +} + +/* Set the TSF CFP pre-TargetBeaconTransmissionTime. */ +static void b43legacy_set_pretbtt(struct b43legacy_wldev *dev) +{ + u16 pretbtt; + + /* The time value is in microseconds. */ + if (b43legacy_is_mode(dev->wl, NL80211_IFTYPE_ADHOC)) + pretbtt = 2; + else + pretbtt = 250; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_PRETBTT, pretbtt); + b43legacy_write16(dev, B43legacy_MMIO_TSF_CFP_PRETBTT, pretbtt); +} + +/* Shutdown a wireless core */ +/* Locking: wl->mutex */ +static void b43legacy_wireless_core_exit(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u32 macctl; + + B43legacy_WARN_ON(b43legacy_status(dev) > B43legacy_STAT_INITIALIZED); + if (b43legacy_status(dev) != B43legacy_STAT_INITIALIZED) + return; + b43legacy_set_status(dev, B43legacy_STAT_UNINIT); + + /* Stop the microcode PSM. */ + macctl = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + macctl &= ~B43legacy_MACCTL_PSM_RUN; + macctl |= B43legacy_MACCTL_PSM_JMP0; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, macctl); + + b43legacy_leds_exit(dev); + b43legacy_rng_exit(dev->wl); + b43legacy_pio_free(dev); + b43legacy_dma_free(dev); + b43legacy_chip_exit(dev); + b43legacy_radio_turn_off(dev, 1); + b43legacy_switch_analog(dev, 0); + if (phy->dyn_tssi_tbl) + kfree(phy->tssi2dbm); + kfree(phy->lo_control); + phy->lo_control = NULL; + if (dev->wl->current_beacon) { + dev_kfree_skb_any(dev->wl->current_beacon); + dev->wl->current_beacon = NULL; + } + + ssb_device_disable(dev->dev, 0); + ssb_bus_may_powerdown(dev->dev->bus); +} + +static void prepare_phy_data_for_init(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + int i; + + /* Set default attenuation values. */ + phy->bbatt = b43legacy_default_baseband_attenuation(dev); + phy->rfatt = b43legacy_default_radio_attenuation(dev); + phy->txctl1 = b43legacy_default_txctl1(dev); + phy->txctl2 = 0xFFFF; + phy->txpwr_offset = 0; + + /* NRSSI */ + phy->nrssislope = 0; + for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++) + phy->nrssi[i] = -1000; + for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++) + phy->nrssi_lt[i] = i; + + phy->lofcal = 0xFFFF; + phy->initval = 0xFFFF; + + phy->aci_enable = false; + phy->aci_wlan_automatic = false; + phy->aci_hw_rssi = false; + + phy->antenna_diversity = 0xFFFF; + memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig)); + memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos)); + + /* Flags */ + phy->calibrated = 0; + + if (phy->_lo_pairs) + memset(phy->_lo_pairs, 0, + sizeof(struct b43legacy_lopair) * B43legacy_LO_COUNT); + memset(phy->loopback_gain, 0, sizeof(phy->loopback_gain)); +} + +/* Initialize a wireless core */ +static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev) +{ + struct b43legacy_wl *wl = dev->wl; + struct ssb_bus *bus = dev->dev->bus; + struct b43legacy_phy *phy = &dev->phy; + struct ssb_sprom *sprom = &dev->dev->bus->sprom; + int err; + u32 hf; + u32 tmp; + + B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT); + + err = ssb_bus_powerup(bus, 0); + if (err) + goto out; + if (!ssb_device_is_enabled(dev->dev)) { + tmp = phy->gmode ? B43legacy_TMSLOW_GMODE : 0; + b43legacy_wireless_core_reset(dev, tmp); + } + + if ((phy->type == B43legacy_PHYTYPE_B) || + (phy->type == B43legacy_PHYTYPE_G)) { + phy->_lo_pairs = kcalloc(B43legacy_LO_COUNT, + sizeof(struct b43legacy_lopair), + GFP_KERNEL); + if (!phy->_lo_pairs) + return -ENOMEM; + } + setup_struct_wldev_for_init(dev); + + err = b43legacy_phy_init_tssi2dbm_table(dev); + if (err) + goto err_kfree_lo_control; + + /* Enable IRQ routing to this device. */ + ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev); + + prepare_phy_data_for_init(dev); + b43legacy_phy_calibrate(dev); + err = b43legacy_chip_init(dev); + if (err) + goto err_kfree_tssitbl; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_WLCOREREV, + dev->dev->id.revision); + hf = b43legacy_hf_read(dev); + if (phy->type == B43legacy_PHYTYPE_G) { + hf |= B43legacy_HF_SYMW; + if (phy->rev == 1) + hf |= B43legacy_HF_GDCW; + if (sprom->boardflags_lo & B43legacy_BFL_PACTRL) + hf |= B43legacy_HF_OFDMPABOOST; + } else if (phy->type == B43legacy_PHYTYPE_B) { + hf |= B43legacy_HF_SYMW; + if (phy->rev >= 2 && phy->radio_ver == 0x2050) + hf &= ~B43legacy_HF_GDCW; + } + b43legacy_hf_write(dev, hf); + + b43legacy_set_retry_limits(dev, + B43legacy_DEFAULT_SHORT_RETRY_LIMIT, + B43legacy_DEFAULT_LONG_RETRY_LIMIT); + + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + 0x0044, 3); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + 0x0046, 2); + + /* Disable sending probe responses from firmware. + * Setting the MaxTime to one usec will always trigger + * a timeout, so we never send any probe resp. + * A timeout of zero is infinite. */ + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, + B43legacy_SHM_SH_PRMAXTIME, 1); + + b43legacy_rate_memory_init(dev); + + /* Minimum Contention Window */ + if (phy->type == B43legacy_PHYTYPE_B) + b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, + 0x0003, 31); + else + b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, + 0x0003, 15); + /* Maximum Contention Window */ + b43legacy_shm_write16(dev, B43legacy_SHM_WIRELESS, + 0x0004, 1023); + + do { + if (b43legacy_using_pio(dev)) + err = b43legacy_pio_init(dev); + else { + err = b43legacy_dma_init(dev); + if (!err) + b43legacy_qos_init(dev); + } + } while (err == -EAGAIN); + if (err) + goto err_chip_exit; + + b43legacy_set_synth_pu_delay(dev, 1); + + ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */ + b43legacy_upload_card_macaddress(dev); + b43legacy_security_init(dev); + b43legacy_rng_init(wl); + + ieee80211_wake_queues(dev->wl->hw); + b43legacy_set_status(dev, B43legacy_STAT_INITIALIZED); + + b43legacy_leds_init(dev); +out: + return err; + +err_chip_exit: + b43legacy_chip_exit(dev); +err_kfree_tssitbl: + if (phy->dyn_tssi_tbl) + kfree(phy->tssi2dbm); +err_kfree_lo_control: + kfree(phy->lo_control); + phy->lo_control = NULL; + ssb_bus_may_powerdown(bus); + B43legacy_WARN_ON(b43legacy_status(dev) != B43legacy_STAT_UNINIT); + return err; +} + +static int b43legacy_op_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev; + unsigned long flags; + int err = -EOPNOTSUPP; + + /* TODO: allow WDS/AP devices to coexist */ + + if (vif->type != NL80211_IFTYPE_AP && + vif->type != NL80211_IFTYPE_STATION && + vif->type != NL80211_IFTYPE_WDS && + vif->type != NL80211_IFTYPE_ADHOC) + return -EOPNOTSUPP; + + mutex_lock(&wl->mutex); + if (wl->operating) + goto out_mutex_unlock; + + b43legacydbg(wl, "Adding Interface type %d\n", vif->type); + + dev = wl->current_dev; + wl->operating = true; + wl->vif = vif; + wl->if_type = vif->type; + memcpy(wl->mac_addr, vif->addr, ETH_ALEN); + + spin_lock_irqsave(&wl->irq_lock, flags); + b43legacy_adjust_opmode(dev); + b43legacy_set_pretbtt(dev); + b43legacy_set_synth_pu_delay(dev, 0); + b43legacy_upload_card_macaddress(dev); + spin_unlock_irqrestore(&wl->irq_lock, flags); + + err = 0; + out_mutex_unlock: + mutex_unlock(&wl->mutex); + + return err; +} + +static void b43legacy_op_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev = wl->current_dev; + unsigned long flags; + + b43legacydbg(wl, "Removing Interface type %d\n", vif->type); + + mutex_lock(&wl->mutex); + + B43legacy_WARN_ON(!wl->operating); + B43legacy_WARN_ON(wl->vif != vif); + wl->vif = NULL; + + wl->operating = false; + + spin_lock_irqsave(&wl->irq_lock, flags); + b43legacy_adjust_opmode(dev); + eth_zero_addr(wl->mac_addr); + b43legacy_upload_card_macaddress(dev); + spin_unlock_irqrestore(&wl->irq_lock, flags); + + mutex_unlock(&wl->mutex); +} + +static int b43legacy_op_start(struct ieee80211_hw *hw) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev = wl->current_dev; + int did_init = 0; + int err = 0; + + /* Kill all old instance specific information to make sure + * the card won't use it in the short timeframe between start + * and mac80211 reconfiguring it. */ + eth_zero_addr(wl->bssid); + eth_zero_addr(wl->mac_addr); + wl->filter_flags = 0; + wl->beacon0_uploaded = false; + wl->beacon1_uploaded = false; + wl->beacon_templates_virgin = true; + wl->radio_enabled = true; + + mutex_lock(&wl->mutex); + + if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) { + err = b43legacy_wireless_core_init(dev); + if (err) + goto out_mutex_unlock; + did_init = 1; + } + + if (b43legacy_status(dev) < B43legacy_STAT_STARTED) { + err = b43legacy_wireless_core_start(dev); + if (err) { + if (did_init) + b43legacy_wireless_core_exit(dev); + goto out_mutex_unlock; + } + } + + wiphy_rfkill_start_polling(hw->wiphy); + +out_mutex_unlock: + mutex_unlock(&wl->mutex); + + return err; +} + +static void b43legacy_op_stop(struct ieee80211_hw *hw) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev = wl->current_dev; + + cancel_work_sync(&(wl->beacon_update_trigger)); + + mutex_lock(&wl->mutex); + if (b43legacy_status(dev) >= B43legacy_STAT_STARTED) + b43legacy_wireless_core_stop(dev); + b43legacy_wireless_core_exit(dev); + wl->radio_enabled = false; + mutex_unlock(&wl->mutex); +} + +static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw, + struct ieee80211_sta *sta, bool set) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + unsigned long flags; + + spin_lock_irqsave(&wl->irq_lock, flags); + b43legacy_update_templates(wl); + spin_unlock_irqrestore(&wl->irq_lock, flags); + + return 0; +} + +static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx, + struct survey_info *survey) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev = wl->current_dev; + struct ieee80211_conf *conf = &hw->conf; + + if (idx != 0) + return -ENOENT; + + survey->channel = conf->chandef.chan; + survey->filled = SURVEY_INFO_NOISE_DBM; + survey->noise = dev->stats.link_noise; + + return 0; +} + +static const struct ieee80211_ops b43legacy_hw_ops = { + .tx = b43legacy_op_tx, + .conf_tx = b43legacy_op_conf_tx, + .add_interface = b43legacy_op_add_interface, + .remove_interface = b43legacy_op_remove_interface, + .config = b43legacy_op_dev_config, + .bss_info_changed = b43legacy_op_bss_info_changed, + .configure_filter = b43legacy_op_configure_filter, + .get_stats = b43legacy_op_get_stats, + .start = b43legacy_op_start, + .stop = b43legacy_op_stop, + .set_tim = b43legacy_op_beacon_set_tim, + .get_survey = b43legacy_op_get_survey, + .rfkill_poll = b43legacy_rfkill_poll, +}; + +/* Hard-reset the chip. Do not call this directly. + * Use b43legacy_controller_restart() + */ +static void b43legacy_chip_reset(struct work_struct *work) +{ + struct b43legacy_wldev *dev = + container_of(work, struct b43legacy_wldev, restart_work); + struct b43legacy_wl *wl = dev->wl; + int err = 0; + int prev_status; + + mutex_lock(&wl->mutex); + + prev_status = b43legacy_status(dev); + /* Bring the device down... */ + if (prev_status >= B43legacy_STAT_STARTED) + b43legacy_wireless_core_stop(dev); + if (prev_status >= B43legacy_STAT_INITIALIZED) + b43legacy_wireless_core_exit(dev); + + /* ...and up again. */ + if (prev_status >= B43legacy_STAT_INITIALIZED) { + err = b43legacy_wireless_core_init(dev); + if (err) + goto out; + } + if (prev_status >= B43legacy_STAT_STARTED) { + err = b43legacy_wireless_core_start(dev); + if (err) { + b43legacy_wireless_core_exit(dev); + goto out; + } + } +out: + if (err) + wl->current_dev = NULL; /* Failed to init the dev. */ + mutex_unlock(&wl->mutex); + if (err) + b43legacyerr(wl, "Controller restart FAILED\n"); + else + b43legacyinfo(wl, "Controller restarted\n"); +} + +static int b43legacy_setup_modes(struct b43legacy_wldev *dev, + int have_bphy, + int have_gphy) +{ + struct ieee80211_hw *hw = dev->wl->hw; + struct b43legacy_phy *phy = &dev->phy; + + phy->possible_phymodes = 0; + if (have_bphy) { + hw->wiphy->bands[NL80211_BAND_2GHZ] = + &b43legacy_band_2GHz_BPHY; + phy->possible_phymodes |= B43legacy_PHYMODE_B; + } + + if (have_gphy) { + hw->wiphy->bands[NL80211_BAND_2GHZ] = + &b43legacy_band_2GHz_GPHY; + phy->possible_phymodes |= B43legacy_PHYMODE_G; + } + + return 0; +} + +static void b43legacy_wireless_core_detach(struct b43legacy_wldev *dev) +{ + /* We release firmware that late to not be required to re-request + * is all the time when we reinit the core. */ + b43legacy_release_firmware(dev); +} + +static int b43legacy_wireless_core_attach(struct b43legacy_wldev *dev) +{ + struct b43legacy_wl *wl = dev->wl; + struct ssb_bus *bus = dev->dev->bus; + struct pci_dev *pdev = (bus->bustype == SSB_BUSTYPE_PCI) ? bus->host_pci : NULL; + int err; + int have_bphy = 0; + int have_gphy = 0; + u32 tmp; + + /* Do NOT do any device initialization here. + * Do it in wireless_core_init() instead. + * This function is for gathering basic information about the HW, only. + * Also some structs may be set up here. But most likely you want to + * have that in core_init(), too. + */ + + err = ssb_bus_powerup(bus, 0); + if (err) { + b43legacyerr(wl, "Bus powerup failed\n"); + goto out; + } + /* Get the PHY type. */ + if (dev->dev->id.revision >= 5) { + u32 tmshigh; + + tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH); + have_gphy = !!(tmshigh & B43legacy_TMSHIGH_GPHY); + if (!have_gphy) + have_bphy = 1; + } else if (dev->dev->id.revision == 4) + have_gphy = 1; + else + have_bphy = 1; + + dev->phy.gmode = (have_gphy || have_bphy); + dev->phy.radio_on = true; + tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0; + b43legacy_wireless_core_reset(dev, tmp); + + err = b43legacy_phy_versioning(dev); + if (err) + goto err_powerdown; + /* Check if this device supports multiband. */ + if (!pdev || + (pdev->device != 0x4312 && + pdev->device != 0x4319 && + pdev->device != 0x4324)) { + /* No multiband support. */ + have_bphy = 0; + have_gphy = 0; + switch (dev->phy.type) { + case B43legacy_PHYTYPE_B: + have_bphy = 1; + break; + case B43legacy_PHYTYPE_G: + have_gphy = 1; + break; + default: + B43legacy_BUG_ON(1); + } + } + dev->phy.gmode = (have_gphy || have_bphy); + tmp = dev->phy.gmode ? B43legacy_TMSLOW_GMODE : 0; + b43legacy_wireless_core_reset(dev, tmp); + + err = b43legacy_validate_chipaccess(dev); + if (err) + goto err_powerdown; + err = b43legacy_setup_modes(dev, have_bphy, have_gphy); + if (err) + goto err_powerdown; + + /* Now set some default "current_dev" */ + if (!wl->current_dev) + wl->current_dev = dev; + INIT_WORK(&dev->restart_work, b43legacy_chip_reset); + + b43legacy_radio_turn_off(dev, 1); + b43legacy_switch_analog(dev, 0); + ssb_device_disable(dev->dev, 0); + ssb_bus_may_powerdown(bus); + +out: + return err; + +err_powerdown: + ssb_bus_may_powerdown(bus); + return err; +} + +static void b43legacy_one_core_detach(struct ssb_device *dev) +{ + struct b43legacy_wldev *wldev; + struct b43legacy_wl *wl; + + /* Do not cancel ieee80211-workqueue based work here. + * See comment in b43legacy_remove(). */ + + wldev = ssb_get_drvdata(dev); + wl = wldev->wl; + b43legacy_debugfs_remove_device(wldev); + b43legacy_wireless_core_detach(wldev); + list_del(&wldev->list); + wl->nr_devs--; + ssb_set_drvdata(dev, NULL); + kfree(wldev); +} + +static int b43legacy_one_core_attach(struct ssb_device *dev, + struct b43legacy_wl *wl) +{ + struct b43legacy_wldev *wldev; + int err = -ENOMEM; + + wldev = kzalloc(sizeof(*wldev), GFP_KERNEL); + if (!wldev) + goto out; + + wldev->dev = dev; + wldev->wl = wl; + b43legacy_set_status(wldev, B43legacy_STAT_UNINIT); + wldev->bad_frames_preempt = modparam_bad_frames_preempt; + tasklet_setup(&wldev->isr_tasklet, b43legacy_interrupt_tasklet); + if (modparam_pio) + wldev->__using_pio = true; + INIT_LIST_HEAD(&wldev->list); + + err = b43legacy_wireless_core_attach(wldev); + if (err) + goto err_kfree_wldev; + + list_add(&wldev->list, &wl->devlist); + wl->nr_devs++; + ssb_set_drvdata(dev, wldev); + b43legacy_debugfs_add_device(wldev); +out: + return err; + +err_kfree_wldev: + kfree(wldev); + return err; +} + +static void b43legacy_sprom_fixup(struct ssb_bus *bus) +{ + /* boardflags workarounds */ + if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE && + bus->boardinfo.type == 0x4E && + bus->sprom.board_rev > 0x40) + bus->sprom.boardflags_lo |= B43legacy_BFL_PACTRL; +} + +static void b43legacy_wireless_exit(struct ssb_device *dev, + struct b43legacy_wl *wl) +{ + struct ieee80211_hw *hw = wl->hw; + + ssb_set_devtypedata(dev, NULL); + ieee80211_free_hw(hw); +} + +static int b43legacy_wireless_init(struct ssb_device *dev) +{ + struct ssb_sprom *sprom = &dev->bus->sprom; + struct ieee80211_hw *hw; + struct b43legacy_wl *wl; + int err = -ENOMEM; + int queue_num; + + b43legacy_sprom_fixup(dev->bus); + + hw = ieee80211_alloc_hw(sizeof(*wl), &b43legacy_hw_ops); + if (!hw) { + b43legacyerr(NULL, "Could not allocate ieee80211 device\n"); + goto out; + } + + /* fill hw info */ + ieee80211_hw_set(hw, RX_INCLUDES_FCS); + ieee80211_hw_set(hw, SIGNAL_DBM); + ieee80211_hw_set(hw, MFP_CAPABLE); /* Allow WPA3 in software */ + + hw->wiphy->interface_modes = + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_STATION) | +#ifdef CONFIG_WIRELESS_WDS + BIT(NL80211_IFTYPE_WDS) | +#endif + BIT(NL80211_IFTYPE_ADHOC); + hw->queues = 1; /* FIXME: hardware has more queues */ + hw->max_rates = 2; + SET_IEEE80211_DEV(hw, dev->dev); + if (is_valid_ether_addr(sprom->et1mac)) + SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac); + else + SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac); + + wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); + + /* Get and initialize struct b43legacy_wl */ + wl = hw_to_b43legacy_wl(hw); + memset(wl, 0, sizeof(*wl)); + wl->hw = hw; + spin_lock_init(&wl->irq_lock); + spin_lock_init(&wl->leds_lock); + mutex_init(&wl->mutex); + INIT_LIST_HEAD(&wl->devlist); + INIT_WORK(&wl->beacon_update_trigger, b43legacy_beacon_update_trigger_work); + INIT_WORK(&wl->tx_work, b43legacy_tx_work); + + /* Initialize queues and flags. */ + for (queue_num = 0; queue_num < B43legacy_QOS_QUEUE_NUM; queue_num++) { + skb_queue_head_init(&wl->tx_queue[queue_num]); + wl->tx_queue_stopped[queue_num] = 0; + } + + ssb_set_devtypedata(dev, wl); + b43legacyinfo(wl, "Broadcom %04X WLAN found (core revision %u)\n", + dev->bus->chip_id, dev->id.revision); + err = 0; +out: + return err; +} + +static int b43legacy_probe(struct ssb_device *dev, + const struct ssb_device_id *id) +{ + struct b43legacy_wl *wl; + int err; + int first = 0; + + wl = ssb_get_devtypedata(dev); + if (!wl) { + /* Probing the first core - setup common struct b43legacy_wl */ + first = 1; + err = b43legacy_wireless_init(dev); + if (err) + goto out; + wl = ssb_get_devtypedata(dev); + B43legacy_WARN_ON(!wl); + } + err = b43legacy_one_core_attach(dev, wl); + if (err) + goto err_wireless_exit; + + /* setup and start work to load firmware */ + INIT_WORK(&wl->firmware_load, b43legacy_request_firmware); + schedule_work(&wl->firmware_load); + +out: + return err; + +err_wireless_exit: + if (first) + b43legacy_wireless_exit(dev, wl); + return err; +} + +static void b43legacy_remove(struct ssb_device *dev) +{ + struct b43legacy_wl *wl = ssb_get_devtypedata(dev); + struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); + + /* We must cancel any work here before unregistering from ieee80211, + * as the ieee80211 unreg will destroy the workqueue. */ + cancel_work_sync(&wldev->restart_work); + cancel_work_sync(&wl->firmware_load); + complete(&wldev->fw_load_complete); + + B43legacy_WARN_ON(!wl); + if (!wldev->fw.ucode) + return; /* NULL if fw never loaded */ + if (wl->current_dev == wldev) + ieee80211_unregister_hw(wl->hw); + + b43legacy_one_core_detach(dev); + + if (list_empty(&wl->devlist)) + /* Last core on the chip unregistered. + * We can destroy common struct b43legacy_wl. + */ + b43legacy_wireless_exit(dev, wl); +} + +/* Perform a hardware reset. This can be called from any context. */ +void b43legacy_controller_restart(struct b43legacy_wldev *dev, + const char *reason) +{ + /* Must avoid requeueing, if we are in shutdown. */ + if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) + return; + b43legacyinfo(dev->wl, "Controller RESET (%s) ...\n", reason); + ieee80211_queue_work(dev->wl->hw, &dev->restart_work); +} + +#ifdef CONFIG_PM + +static int b43legacy_suspend(struct ssb_device *dev, pm_message_t state) +{ + struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); + struct b43legacy_wl *wl = wldev->wl; + + b43legacydbg(wl, "Suspending...\n"); + + mutex_lock(&wl->mutex); + wldev->suspend_init_status = b43legacy_status(wldev); + if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) + b43legacy_wireless_core_stop(wldev); + if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) + b43legacy_wireless_core_exit(wldev); + mutex_unlock(&wl->mutex); + + b43legacydbg(wl, "Device suspended.\n"); + + return 0; +} + +static int b43legacy_resume(struct ssb_device *dev) +{ + struct b43legacy_wldev *wldev = ssb_get_drvdata(dev); + struct b43legacy_wl *wl = wldev->wl; + int err = 0; + + b43legacydbg(wl, "Resuming...\n"); + + mutex_lock(&wl->mutex); + if (wldev->suspend_init_status >= B43legacy_STAT_INITIALIZED) { + err = b43legacy_wireless_core_init(wldev); + if (err) { + b43legacyerr(wl, "Resume failed at core init\n"); + goto out; + } + } + if (wldev->suspend_init_status >= B43legacy_STAT_STARTED) { + err = b43legacy_wireless_core_start(wldev); + if (err) { + b43legacy_wireless_core_exit(wldev); + b43legacyerr(wl, "Resume failed at core start\n"); + goto out; + } + } + + b43legacydbg(wl, "Device resumed.\n"); +out: + mutex_unlock(&wl->mutex); + return err; +} + +#else /* CONFIG_PM */ +# define b43legacy_suspend NULL +# define b43legacy_resume NULL +#endif /* CONFIG_PM */ + +static struct ssb_driver b43legacy_ssb_driver = { + .name = KBUILD_MODNAME, + .id_table = b43legacy_ssb_tbl, + .probe = b43legacy_probe, + .remove = b43legacy_remove, + .suspend = b43legacy_suspend, + .resume = b43legacy_resume, +}; + +static void b43legacy_print_driverinfo(void) +{ + const char *feat_pci = "", *feat_leds = "", + *feat_pio = "", *feat_dma = ""; + +#ifdef CONFIG_B43LEGACY_PCI_AUTOSELECT + feat_pci = "P"; +#endif +#ifdef CONFIG_B43LEGACY_LEDS + feat_leds = "L"; +#endif +#ifdef CONFIG_B43LEGACY_PIO + feat_pio = "I"; +#endif +#ifdef CONFIG_B43LEGACY_DMA + feat_dma = "D"; +#endif + printk(KERN_INFO "Broadcom 43xx-legacy driver loaded " + "[ Features: %s%s%s%s ]\n", + feat_pci, feat_leds, feat_pio, feat_dma); +} + +static int __init b43legacy_init(void) +{ + int err; + + b43legacy_debugfs_init(); + + err = ssb_driver_register(&b43legacy_ssb_driver); + if (err) + goto err_dfs_exit; + + b43legacy_print_driverinfo(); + + return err; + +err_dfs_exit: + b43legacy_debugfs_exit(); + return err; +} + +static void __exit b43legacy_exit(void) +{ + ssb_driver_unregister(&b43legacy_ssb_driver); + b43legacy_debugfs_exit(); +} + +module_init(b43legacy_init) +module_exit(b43legacy_exit) diff --git a/drivers/net/wireless/broadcom/b43legacy/main.h b/drivers/net/wireless/broadcom/b43legacy/main.h new file mode 100644 index 000000000..85edbc8c1 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/main.h @@ -0,0 +1,114 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + + Broadcom B43legacy wireless driver + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, + Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it> + Copyright (c) 2005, 2006 Michael Buesch <m@bues.ch> + Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> + Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> + Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> + + Some parts of the code in this file are derived from the ipw2200 + driver Copyright(c) 2003 - 2004 Intel Corporation. + + +*/ + +#ifndef B43legacy_MAIN_H_ +#define B43legacy_MAIN_H_ + +#include "b43legacy.h" + + +#define P4D_BYT3S(magic, nr_bytes) u8 __p4dding##magic[nr_bytes] +#define P4D_BYTES(line, nr_bytes) P4D_BYT3S(line, nr_bytes) +/* Magic helper macro to pad structures. Ignore those above. It's magic. */ +#define PAD_BYTES(nr_bytes) P4D_BYTES(__LINE__ , (nr_bytes)) + + +/* Lightweight function to convert a frequency (in Mhz) to a channel number. */ +static inline +u8 b43legacy_freq_to_channel_bg(int freq) +{ + u8 channel; + + if (freq == 2484) + channel = 14; + else + channel = (freq - 2407) / 5; + + return channel; +} +static inline +u8 b43legacy_freq_to_channel(struct b43legacy_wldev *dev, + int freq) +{ + return b43legacy_freq_to_channel_bg(freq); +} + +/* Lightweight function to convert a channel number to a frequency (in Mhz). */ +static inline +int b43legacy_channel_to_freq_bg(u8 channel) +{ + int freq; + + if (channel == 14) + freq = 2484; + else + freq = 2407 + (5 * channel); + + return freq; +} + +static inline +int b43legacy_channel_to_freq(struct b43legacy_wldev *dev, + u8 channel) +{ + return b43legacy_channel_to_freq_bg(channel); +} + +static inline +int b43legacy_is_cck_rate(int rate) +{ + return (rate == B43legacy_CCK_RATE_1MB || + rate == B43legacy_CCK_RATE_2MB || + rate == B43legacy_CCK_RATE_5MB || + rate == B43legacy_CCK_RATE_11MB); +} + +static inline +int b43legacy_is_ofdm_rate(int rate) +{ + return !b43legacy_is_cck_rate(rate); +} + +void b43legacy_tsf_read(struct b43legacy_wldev *dev, u64 *tsf); +void b43legacy_tsf_write(struct b43legacy_wldev *dev, u64 tsf); + +u32 b43legacy_shm_read32(struct b43legacy_wldev *dev, + u16 routing, u16 offset); +u16 b43legacy_shm_read16(struct b43legacy_wldev *dev, + u16 routing, u16 offset); +void b43legacy_shm_write32(struct b43legacy_wldev *dev, + u16 routing, u16 offset, + u32 value); +void b43legacy_shm_write16(struct b43legacy_wldev *dev, + u16 routing, u16 offset, + u16 value); + +u32 b43legacy_hf_read(struct b43legacy_wldev *dev); +void b43legacy_hf_write(struct b43legacy_wldev *dev, u32 value); + +void b43legacy_dummy_transmission(struct b43legacy_wldev *dev); + +void b43legacy_wireless_core_reset(struct b43legacy_wldev *dev, u32 flags); + +void b43legacy_mac_suspend(struct b43legacy_wldev *dev); +void b43legacy_mac_enable(struct b43legacy_wldev *dev); + +void b43legacy_controller_restart(struct b43legacy_wldev *dev, + const char *reason); + +#endif /* B43legacy_MAIN_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/phy.c b/drivers/net/wireless/broadcom/b43legacy/phy.c new file mode 100644 index 000000000..c1395e622 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/phy.c @@ -0,0 +1,2233 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, + Stefano Brivio <stefano.brivio@polimi.it> + Michael Buesch <m@bues.ch> + Danny van Dyk <kugelfang@gentoo.org> + Andreas Jaggi <andreas.jaggi@waterwave.ch> + Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> + + Some parts of the code in this file are derived from the ipw2200 + driver Copyright(c) 2003 - 2004 Intel Corporation. + + +*/ + +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/types.h> + +#include "b43legacy.h" +#include "phy.h" +#include "main.h" +#include "radio.h" +#include "ilt.h" + + +static const s8 b43legacy_tssi2dbm_b_table[] = { + 0x4D, 0x4C, 0x4B, 0x4A, + 0x4A, 0x49, 0x48, 0x47, + 0x47, 0x46, 0x45, 0x45, + 0x44, 0x43, 0x42, 0x42, + 0x41, 0x40, 0x3F, 0x3E, + 0x3D, 0x3C, 0x3B, 0x3A, + 0x39, 0x38, 0x37, 0x36, + 0x35, 0x34, 0x32, 0x31, + 0x30, 0x2F, 0x2D, 0x2C, + 0x2B, 0x29, 0x28, 0x26, + 0x25, 0x23, 0x21, 0x1F, + 0x1D, 0x1A, 0x17, 0x14, + 0x10, 0x0C, 0x06, 0x00, + -7, -7, -7, -7, + -7, -7, -7, -7, + -7, -7, -7, -7, +}; + +static const s8 b43legacy_tssi2dbm_g_table[] = { + 77, 77, 77, 76, + 76, 76, 75, 75, + 74, 74, 73, 73, + 73, 72, 72, 71, + 71, 70, 70, 69, + 68, 68, 67, 67, + 66, 65, 65, 64, + 63, 63, 62, 61, + 60, 59, 58, 57, + 56, 55, 54, 53, + 52, 50, 49, 47, + 45, 43, 40, 37, + 33, 28, 22, 14, + 5, -7, -20, -20, + -20, -20, -20, -20, + -20, -20, -20, -20, +}; + +static void b43legacy_phy_initg(struct b43legacy_wldev *dev); + +/* Lock the PHY registers against concurrent access from the microcode. + * This lock is nonrecursive. */ +void b43legacy_phy_lock(struct b43legacy_wldev *dev) +{ +#if B43legacy_DEBUG + B43legacy_WARN_ON(dev->phy.phy_locked); + dev->phy.phy_locked = 1; +#endif + + if (dev->dev->id.revision < 3) { + b43legacy_mac_suspend(dev); + } else { + if (!b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) + b43legacy_power_saving_ctl_bits(dev, -1, 1); + } +} + +void b43legacy_phy_unlock(struct b43legacy_wldev *dev) +{ +#if B43legacy_DEBUG + B43legacy_WARN_ON(!dev->phy.phy_locked); + dev->phy.phy_locked = 0; +#endif + + if (dev->dev->id.revision < 3) { + b43legacy_mac_enable(dev); + } else { + if (!b43legacy_is_mode(dev->wl, NL80211_IFTYPE_AP)) + b43legacy_power_saving_ctl_bits(dev, -1, -1); + } +} + +u16 b43legacy_phy_read(struct b43legacy_wldev *dev, u16 offset) +{ + b43legacy_write16(dev, B43legacy_MMIO_PHY_CONTROL, offset); + return b43legacy_read16(dev, B43legacy_MMIO_PHY_DATA); +} + +void b43legacy_phy_write(struct b43legacy_wldev *dev, u16 offset, u16 val) +{ + b43legacy_write16(dev, B43legacy_MMIO_PHY_CONTROL, offset); + b43legacy_write16(dev, B43legacy_MMIO_PHY_DATA, val); +} + +void b43legacy_phy_calibrate(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + b43legacy_read32(dev, B43legacy_MMIO_MACCTL); /* Dummy read. */ + if (phy->calibrated) + return; + if (phy->type == B43legacy_PHYTYPE_G && phy->rev == 1) { + b43legacy_wireless_core_reset(dev, 0); + b43legacy_phy_initg(dev); + b43legacy_wireless_core_reset(dev, B43legacy_TMSLOW_GMODE); + } + phy->calibrated = 1; +} + +/* initialize B PHY power control + * as described in https://bcm-specs.sipsolutions.net/InitPowerControl + */ +static void b43legacy_phy_init_pctl(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 saved_batt = 0; + u16 saved_ratt = 0; + u16 saved_txctl1 = 0; + int must_reset_txpower = 0; + + B43legacy_BUG_ON(!(phy->type == B43legacy_PHYTYPE_B || + phy->type == B43legacy_PHYTYPE_G)); + if (is_bcm_board_vendor(dev) && + (dev->dev->bus->boardinfo.type == 0x0416)) + return; + + b43legacy_phy_write(dev, 0x0028, 0x8018); + b43legacy_write16(dev, 0x03E6, b43legacy_read16(dev, 0x03E6) & 0xFFDF); + + if (phy->type == B43legacy_PHYTYPE_G) { + if (!phy->gmode) + return; + b43legacy_phy_write(dev, 0x047A, 0xC111); + } + if (phy->savedpctlreg != 0xFFFF) + return; +#ifdef CONFIG_B43LEGACY_DEBUG + if (phy->manual_txpower_control) + return; +#endif + + if (phy->type == B43legacy_PHYTYPE_B && + phy->rev >= 2 && + phy->radio_ver == 0x2050) + b43legacy_radio_write16(dev, 0x0076, + b43legacy_radio_read16(dev, 0x0076) + | 0x0084); + else { + saved_batt = phy->bbatt; + saved_ratt = phy->rfatt; + saved_txctl1 = phy->txctl1; + if ((phy->radio_rev >= 6) && (phy->radio_rev <= 8) + && /*FIXME: incomplete specs for 5 < revision < 9 */ 0) + b43legacy_radio_set_txpower_bg(dev, 0xB, 0x1F, 0); + else + b43legacy_radio_set_txpower_bg(dev, 0xB, 9, 0); + must_reset_txpower = 1; + } + b43legacy_dummy_transmission(dev); + + phy->savedpctlreg = b43legacy_phy_read(dev, B43legacy_PHY_G_PCTL); + + if (must_reset_txpower) + b43legacy_radio_set_txpower_bg(dev, saved_batt, saved_ratt, + saved_txctl1); + else + b43legacy_radio_write16(dev, 0x0076, b43legacy_radio_read16(dev, + 0x0076) & 0xFF7B); + b43legacy_radio_clear_tssi(dev); +} + +static void b43legacy_phy_agcsetup(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 offset = 0x0000; + + if (phy->rev == 1) + offset = 0x4C00; + + b43legacy_ilt_write(dev, offset, 0x00FE); + b43legacy_ilt_write(dev, offset + 1, 0x000D); + b43legacy_ilt_write(dev, offset + 2, 0x0013); + b43legacy_ilt_write(dev, offset + 3, 0x0019); + + if (phy->rev == 1) { + b43legacy_ilt_write(dev, 0x1800, 0x2710); + b43legacy_ilt_write(dev, 0x1801, 0x9B83); + b43legacy_ilt_write(dev, 0x1802, 0x9B83); + b43legacy_ilt_write(dev, 0x1803, 0x0F8D); + b43legacy_phy_write(dev, 0x0455, 0x0004); + } + + b43legacy_phy_write(dev, 0x04A5, (b43legacy_phy_read(dev, 0x04A5) + & 0x00FF) | 0x5700); + b43legacy_phy_write(dev, 0x041A, (b43legacy_phy_read(dev, 0x041A) + & 0xFF80) | 0x000F); + b43legacy_phy_write(dev, 0x041A, (b43legacy_phy_read(dev, 0x041A) + & 0xC07F) | 0x2B80); + b43legacy_phy_write(dev, 0x048C, (b43legacy_phy_read(dev, 0x048C) + & 0xF0FF) | 0x0300); + + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0008); + + b43legacy_phy_write(dev, 0x04A0, (b43legacy_phy_read(dev, 0x04A0) + & 0xFFF0) | 0x0008); + b43legacy_phy_write(dev, 0x04A1, (b43legacy_phy_read(dev, 0x04A1) + & 0xF0FF) | 0x0600); + b43legacy_phy_write(dev, 0x04A2, (b43legacy_phy_read(dev, 0x04A2) + & 0xF0FF) | 0x0700); + b43legacy_phy_write(dev, 0x04A0, (b43legacy_phy_read(dev, 0x04A0) + & 0xF0FF) | 0x0100); + + if (phy->rev == 1) + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) + & 0xFFF0) | 0x0007); + + b43legacy_phy_write(dev, 0x0488, (b43legacy_phy_read(dev, 0x0488) + & 0xFF00) | 0x001C); + b43legacy_phy_write(dev, 0x0488, (b43legacy_phy_read(dev, 0x0488) + & 0xC0FF) | 0x0200); + b43legacy_phy_write(dev, 0x0496, (b43legacy_phy_read(dev, 0x0496) + & 0xFF00) | 0x001C); + b43legacy_phy_write(dev, 0x0489, (b43legacy_phy_read(dev, 0x0489) + & 0xFF00) | 0x0020); + b43legacy_phy_write(dev, 0x0489, (b43legacy_phy_read(dev, 0x0489) + & 0xC0FF) | 0x0200); + b43legacy_phy_write(dev, 0x0482, (b43legacy_phy_read(dev, 0x0482) + & 0xFF00) | 0x002E); + b43legacy_phy_write(dev, 0x0496, (b43legacy_phy_read(dev, 0x0496) + & 0x00FF) | 0x1A00); + b43legacy_phy_write(dev, 0x0481, (b43legacy_phy_read(dev, 0x0481) + & 0xFF00) | 0x0028); + b43legacy_phy_write(dev, 0x0481, (b43legacy_phy_read(dev, 0x0481) + & 0x00FF) | 0x2C00); + + if (phy->rev == 1) { + b43legacy_phy_write(dev, 0x0430, 0x092B); + b43legacy_phy_write(dev, 0x041B, + (b43legacy_phy_read(dev, 0x041B) + & 0xFFE1) | 0x0002); + } else { + b43legacy_phy_write(dev, 0x041B, + b43legacy_phy_read(dev, 0x041B) & 0xFFE1); + b43legacy_phy_write(dev, 0x041F, 0x287A); + b43legacy_phy_write(dev, 0x0420, + (b43legacy_phy_read(dev, 0x0420) + & 0xFFF0) | 0x0004); + } + + if (phy->rev > 2) { + b43legacy_phy_write(dev, 0x0422, 0x287A); + b43legacy_phy_write(dev, 0x0420, + (b43legacy_phy_read(dev, 0x0420) + & 0x0FFF) | 0x3000); + } + + b43legacy_phy_write(dev, 0x04A8, (b43legacy_phy_read(dev, 0x04A8) + & 0x8080) | 0x7874); + b43legacy_phy_write(dev, 0x048E, 0x1C00); + + if (phy->rev == 1) { + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xF0FF) | 0x0600); + b43legacy_phy_write(dev, 0x048B, 0x005E); + b43legacy_phy_write(dev, 0x048C, + (b43legacy_phy_read(dev, 0x048C) & 0xFF00) + | 0x001E); + b43legacy_phy_write(dev, 0x048D, 0x0002); + } + + b43legacy_ilt_write(dev, offset + 0x0800, 0); + b43legacy_ilt_write(dev, offset + 0x0801, 7); + b43legacy_ilt_write(dev, offset + 0x0802, 16); + b43legacy_ilt_write(dev, offset + 0x0803, 28); + + if (phy->rev >= 6) { + b43legacy_phy_write(dev, 0x0426, + (b43legacy_phy_read(dev, 0x0426) & 0xFFFC)); + b43legacy_phy_write(dev, 0x0426, + (b43legacy_phy_read(dev, 0x0426) & 0xEFFF)); + } +} + +static void b43legacy_phy_setupg(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 i; + + B43legacy_BUG_ON(phy->type != B43legacy_PHYTYPE_G); + if (phy->rev == 1) { + b43legacy_phy_write(dev, 0x0406, 0x4F19); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + (b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) & 0xFC3F) | 0x0340); + b43legacy_phy_write(dev, 0x042C, 0x005A); + b43legacy_phy_write(dev, 0x0427, 0x001A); + + for (i = 0; i < B43legacy_ILT_FINEFREQG_SIZE; i++) + b43legacy_ilt_write(dev, 0x5800 + i, + b43legacy_ilt_finefreqg[i]); + for (i = 0; i < B43legacy_ILT_NOISEG1_SIZE; i++) + b43legacy_ilt_write(dev, 0x1800 + i, + b43legacy_ilt_noiseg1[i]); + for (i = 0; i < B43legacy_ILT_ROTOR_SIZE; i++) + b43legacy_ilt_write32(dev, 0x2000 + i, + b43legacy_ilt_rotor[i]); + } else { + /* nrssi values are signed 6-bit values. Why 0x7654 here? */ + b43legacy_nrssi_hw_write(dev, 0xBA98, (s16)0x7654); + + if (phy->rev == 2) { + b43legacy_phy_write(dev, 0x04C0, 0x1861); + b43legacy_phy_write(dev, 0x04C1, 0x0271); + } else if (phy->rev > 2) { + b43legacy_phy_write(dev, 0x04C0, 0x0098); + b43legacy_phy_write(dev, 0x04C1, 0x0070); + b43legacy_phy_write(dev, 0x04C9, 0x0080); + } + b43legacy_phy_write(dev, 0x042B, b43legacy_phy_read(dev, + 0x042B) | 0x800); + + for (i = 0; i < 64; i++) + b43legacy_ilt_write(dev, 0x4000 + i, i); + for (i = 0; i < B43legacy_ILT_NOISEG2_SIZE; i++) + b43legacy_ilt_write(dev, 0x1800 + i, + b43legacy_ilt_noiseg2[i]); + } + + if (phy->rev <= 2) + for (i = 0; i < B43legacy_ILT_NOISESCALEG_SIZE; i++) + b43legacy_ilt_write(dev, 0x1400 + i, + b43legacy_ilt_noisescaleg1[i]); + else if ((phy->rev >= 7) && (b43legacy_phy_read(dev, 0x0449) & 0x0200)) + for (i = 0; i < B43legacy_ILT_NOISESCALEG_SIZE; i++) + b43legacy_ilt_write(dev, 0x1400 + i, + b43legacy_ilt_noisescaleg3[i]); + else + for (i = 0; i < B43legacy_ILT_NOISESCALEG_SIZE; i++) + b43legacy_ilt_write(dev, 0x1400 + i, + b43legacy_ilt_noisescaleg2[i]); + + if (phy->rev == 2) + for (i = 0; i < B43legacy_ILT_SIGMASQR_SIZE; i++) + b43legacy_ilt_write(dev, 0x5000 + i, + b43legacy_ilt_sigmasqr1[i]); + else if ((phy->rev > 2) && (phy->rev <= 8)) + for (i = 0; i < B43legacy_ILT_SIGMASQR_SIZE; i++) + b43legacy_ilt_write(dev, 0x5000 + i, + b43legacy_ilt_sigmasqr2[i]); + + if (phy->rev == 1) { + for (i = 0; i < B43legacy_ILT_RETARD_SIZE; i++) + b43legacy_ilt_write32(dev, 0x2400 + i, + b43legacy_ilt_retard[i]); + for (i = 4; i < 20; i++) + b43legacy_ilt_write(dev, 0x5400 + i, 0x0020); + b43legacy_phy_agcsetup(dev); + + if (is_bcm_board_vendor(dev) && + (dev->dev->bus->boardinfo.type == 0x0416) && + (dev->dev->bus->sprom.board_rev == 0x0017)) + return; + + b43legacy_ilt_write(dev, 0x5001, 0x0002); + b43legacy_ilt_write(dev, 0x5002, 0x0001); + } else { + for (i = 0; i <= 0x20; i++) + b43legacy_ilt_write(dev, 0x1000 + i, 0x0820); + b43legacy_phy_agcsetup(dev); + b43legacy_phy_read(dev, 0x0400); /* dummy read */ + b43legacy_phy_write(dev, 0x0403, 0x1000); + b43legacy_ilt_write(dev, 0x3C02, 0x000F); + b43legacy_ilt_write(dev, 0x3C03, 0x0014); + + if (is_bcm_board_vendor(dev) && + (dev->dev->bus->boardinfo.type == 0x0416) && + (dev->dev->bus->sprom.board_rev == 0x0017)) + return; + + b43legacy_ilt_write(dev, 0x0401, 0x0002); + b43legacy_ilt_write(dev, 0x0402, 0x0001); + } +} + +/* Initialize the APHY portion of a GPHY. */ +static void b43legacy_phy_inita(struct b43legacy_wldev *dev) +{ + + might_sleep(); + + b43legacy_phy_setupg(dev); + if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_PACTRL) + b43legacy_phy_write(dev, 0x046E, 0x03CF); +} + +static void b43legacy_phy_initb2(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 offset; + int val; + + b43legacy_write16(dev, 0x03EC, 0x3F22); + b43legacy_phy_write(dev, 0x0020, 0x301C); + b43legacy_phy_write(dev, 0x0026, 0x0000); + b43legacy_phy_write(dev, 0x0030, 0x00C6); + b43legacy_phy_write(dev, 0x0088, 0x3E00); + val = 0x3C3D; + for (offset = 0x0089; offset < 0x00A7; offset++) { + b43legacy_phy_write(dev, offset, val); + val -= 0x0202; + } + b43legacy_phy_write(dev, 0x03E4, 0x3000); + b43legacy_radio_selectchannel(dev, phy->channel, 0); + if (phy->radio_ver != 0x2050) { + b43legacy_radio_write16(dev, 0x0075, 0x0080); + b43legacy_radio_write16(dev, 0x0079, 0x0081); + } + b43legacy_radio_write16(dev, 0x0050, 0x0020); + b43legacy_radio_write16(dev, 0x0050, 0x0023); + if (phy->radio_ver == 0x2050) { + b43legacy_radio_write16(dev, 0x0050, 0x0020); + b43legacy_radio_write16(dev, 0x005A, 0x0070); + b43legacy_radio_write16(dev, 0x005B, 0x007B); + b43legacy_radio_write16(dev, 0x005C, 0x00B0); + b43legacy_radio_write16(dev, 0x007A, 0x000F); + b43legacy_phy_write(dev, 0x0038, 0x0677); + b43legacy_radio_init2050(dev); + } + b43legacy_phy_write(dev, 0x0014, 0x0080); + b43legacy_phy_write(dev, 0x0032, 0x00CA); + b43legacy_phy_write(dev, 0x0032, 0x00CC); + b43legacy_phy_write(dev, 0x0035, 0x07C2); + b43legacy_phy_lo_b_measure(dev); + b43legacy_phy_write(dev, 0x0026, 0xCC00); + if (phy->radio_ver != 0x2050) + b43legacy_phy_write(dev, 0x0026, 0xCE00); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, 0x1000); + b43legacy_phy_write(dev, 0x002A, 0x88A3); + if (phy->radio_ver != 0x2050) + b43legacy_phy_write(dev, 0x002A, 0x88C2); + b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF); + b43legacy_phy_init_pctl(dev); +} + +static void b43legacy_phy_initb4(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 offset; + u16 val; + + b43legacy_write16(dev, 0x03EC, 0x3F22); + b43legacy_phy_write(dev, 0x0020, 0x301C); + b43legacy_phy_write(dev, 0x0026, 0x0000); + b43legacy_phy_write(dev, 0x0030, 0x00C6); + b43legacy_phy_write(dev, 0x0088, 0x3E00); + val = 0x3C3D; + for (offset = 0x0089; offset < 0x00A7; offset++) { + b43legacy_phy_write(dev, offset, val); + val -= 0x0202; + } + b43legacy_phy_write(dev, 0x03E4, 0x3000); + b43legacy_radio_selectchannel(dev, phy->channel, 0); + if (phy->radio_ver != 0x2050) { + b43legacy_radio_write16(dev, 0x0075, 0x0080); + b43legacy_radio_write16(dev, 0x0079, 0x0081); + } + b43legacy_radio_write16(dev, 0x0050, 0x0020); + b43legacy_radio_write16(dev, 0x0050, 0x0023); + if (phy->radio_ver == 0x2050) { + b43legacy_radio_write16(dev, 0x0050, 0x0020); + b43legacy_radio_write16(dev, 0x005A, 0x0070); + b43legacy_radio_write16(dev, 0x005B, 0x007B); + b43legacy_radio_write16(dev, 0x005C, 0x00B0); + b43legacy_radio_write16(dev, 0x007A, 0x000F); + b43legacy_phy_write(dev, 0x0038, 0x0677); + b43legacy_radio_init2050(dev); + } + b43legacy_phy_write(dev, 0x0014, 0x0080); + b43legacy_phy_write(dev, 0x0032, 0x00CA); + if (phy->radio_ver == 0x2050) + b43legacy_phy_write(dev, 0x0032, 0x00E0); + b43legacy_phy_write(dev, 0x0035, 0x07C2); + + b43legacy_phy_lo_b_measure(dev); + + b43legacy_phy_write(dev, 0x0026, 0xCC00); + if (phy->radio_ver == 0x2050) + b43legacy_phy_write(dev, 0x0026, 0xCE00); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, 0x1100); + b43legacy_phy_write(dev, 0x002A, 0x88A3); + if (phy->radio_ver == 0x2050) + b43legacy_phy_write(dev, 0x002A, 0x88C2); + b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF); + if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI) { + b43legacy_calc_nrssi_slope(dev); + b43legacy_calc_nrssi_threshold(dev); + } + b43legacy_phy_init_pctl(dev); +} + +static void b43legacy_phy_initb5(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 offset; + u16 value; + u8 old_channel; + + if (phy->analog == 1) + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0050); + if (!is_bcm_board_vendor(dev) && + (dev->dev->bus->boardinfo.type != 0x0416)) { + value = 0x2120; + for (offset = 0x00A8 ; offset < 0x00C7; offset++) { + b43legacy_phy_write(dev, offset, value); + value += 0x0202; + } + } + b43legacy_phy_write(dev, 0x0035, + (b43legacy_phy_read(dev, 0x0035) & 0xF0FF) + | 0x0700); + if (phy->radio_ver == 0x2050) + b43legacy_phy_write(dev, 0x0038, 0x0667); + + if (phy->gmode) { + if (phy->radio_ver == 0x2050) { + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0020); + b43legacy_radio_write16(dev, 0x0051, + b43legacy_radio_read16(dev, 0x0051) + | 0x0004); + } + b43legacy_write16(dev, B43legacy_MMIO_PHY_RADIO, 0x0000); + + b43legacy_phy_write(dev, 0x0802, b43legacy_phy_read(dev, 0x0802) + | 0x0100); + b43legacy_phy_write(dev, 0x042B, b43legacy_phy_read(dev, 0x042B) + | 0x2000); + + b43legacy_phy_write(dev, 0x001C, 0x186A); + + b43legacy_phy_write(dev, 0x0013, (b43legacy_phy_read(dev, + 0x0013) & 0x00FF) | 0x1900); + b43legacy_phy_write(dev, 0x0035, (b43legacy_phy_read(dev, + 0x0035) & 0xFFC0) | 0x0064); + b43legacy_phy_write(dev, 0x005D, (b43legacy_phy_read(dev, + 0x005D) & 0xFF80) | 0x000A); + b43legacy_phy_write(dev, 0x5B, 0x0000); + b43legacy_phy_write(dev, 0x5C, 0x0000); + } + + if (dev->bad_frames_preempt) + b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD, + b43legacy_phy_read(dev, + B43legacy_PHY_RADIO_BITFIELD) | (1 << 12)); + + if (phy->analog == 1) { + b43legacy_phy_write(dev, 0x0026, 0xCE00); + b43legacy_phy_write(dev, 0x0021, 0x3763); + b43legacy_phy_write(dev, 0x0022, 0x1BC3); + b43legacy_phy_write(dev, 0x0023, 0x06F9); + b43legacy_phy_write(dev, 0x0024, 0x037E); + } else + b43legacy_phy_write(dev, 0x0026, 0xCC00); + b43legacy_phy_write(dev, 0x0030, 0x00C6); + b43legacy_write16(dev, 0x03EC, 0x3F22); + + if (phy->analog == 1) + b43legacy_phy_write(dev, 0x0020, 0x3E1C); + else + b43legacy_phy_write(dev, 0x0020, 0x301C); + + if (phy->analog == 0) + b43legacy_write16(dev, 0x03E4, 0x3000); + + old_channel = (phy->channel == 0xFF) ? 1 : phy->channel; + /* Force to channel 7, even if not supported. */ + b43legacy_radio_selectchannel(dev, 7, 0); + + if (phy->radio_ver != 0x2050) { + b43legacy_radio_write16(dev, 0x0075, 0x0080); + b43legacy_radio_write16(dev, 0x0079, 0x0081); + } + + b43legacy_radio_write16(dev, 0x0050, 0x0020); + b43legacy_radio_write16(dev, 0x0050, 0x0023); + + if (phy->radio_ver == 0x2050) { + b43legacy_radio_write16(dev, 0x0050, 0x0020); + b43legacy_radio_write16(dev, 0x005A, 0x0070); + } + + b43legacy_radio_write16(dev, 0x005B, 0x007B); + b43legacy_radio_write16(dev, 0x005C, 0x00B0); + + b43legacy_radio_write16(dev, 0x007A, b43legacy_radio_read16(dev, + 0x007A) | 0x0007); + + b43legacy_radio_selectchannel(dev, old_channel, 0); + + b43legacy_phy_write(dev, 0x0014, 0x0080); + b43legacy_phy_write(dev, 0x0032, 0x00CA); + b43legacy_phy_write(dev, 0x002A, 0x88A3); + + b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF); + + if (phy->radio_ver == 0x2050) + b43legacy_radio_write16(dev, 0x005D, 0x000D); + + b43legacy_write16(dev, 0x03E4, (b43legacy_read16(dev, 0x03E4) & + 0xFFC0) | 0x0004); +} + +static void b43legacy_phy_initb6(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 offset; + u16 val; + u8 old_channel; + + b43legacy_phy_write(dev, 0x003E, 0x817A); + b43legacy_radio_write16(dev, 0x007A, + (b43legacy_radio_read16(dev, 0x007A) | 0x0058)); + if (phy->radio_rev == 4 || + phy->radio_rev == 5) { + b43legacy_radio_write16(dev, 0x0051, 0x0037); + b43legacy_radio_write16(dev, 0x0052, 0x0070); + b43legacy_radio_write16(dev, 0x0053, 0x00B3); + b43legacy_radio_write16(dev, 0x0054, 0x009B); + b43legacy_radio_write16(dev, 0x005A, 0x0088); + b43legacy_radio_write16(dev, 0x005B, 0x0088); + b43legacy_radio_write16(dev, 0x005D, 0x0088); + b43legacy_radio_write16(dev, 0x005E, 0x0088); + b43legacy_radio_write16(dev, 0x007D, 0x0088); + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + (b43legacy_shm_read32(dev, + B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET) + | 0x00000200)); + } + if (phy->radio_rev == 8) { + b43legacy_radio_write16(dev, 0x0051, 0x0000); + b43legacy_radio_write16(dev, 0x0052, 0x0040); + b43legacy_radio_write16(dev, 0x0053, 0x00B7); + b43legacy_radio_write16(dev, 0x0054, 0x0098); + b43legacy_radio_write16(dev, 0x005A, 0x0088); + b43legacy_radio_write16(dev, 0x005B, 0x006B); + b43legacy_radio_write16(dev, 0x005C, 0x000F); + if (dev->dev->bus->sprom.boardflags_lo & 0x8000) { + b43legacy_radio_write16(dev, 0x005D, 0x00FA); + b43legacy_radio_write16(dev, 0x005E, 0x00D8); + } else { + b43legacy_radio_write16(dev, 0x005D, 0x00F5); + b43legacy_radio_write16(dev, 0x005E, 0x00B8); + } + b43legacy_radio_write16(dev, 0x0073, 0x0003); + b43legacy_radio_write16(dev, 0x007D, 0x00A8); + b43legacy_radio_write16(dev, 0x007C, 0x0001); + b43legacy_radio_write16(dev, 0x007E, 0x0008); + } + val = 0x1E1F; + for (offset = 0x0088; offset < 0x0098; offset++) { + b43legacy_phy_write(dev, offset, val); + val -= 0x0202; + } + val = 0x3E3F; + for (offset = 0x0098; offset < 0x00A8; offset++) { + b43legacy_phy_write(dev, offset, val); + val -= 0x0202; + } + val = 0x2120; + for (offset = 0x00A8; offset < 0x00C8; offset++) { + b43legacy_phy_write(dev, offset, (val & 0x3F3F)); + val += 0x0202; + } + if (phy->type == B43legacy_PHYTYPE_G) { + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) | + 0x0020); + b43legacy_radio_write16(dev, 0x0051, + b43legacy_radio_read16(dev, 0x0051) | + 0x0004); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) | 0x0100); + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) | 0x2000); + b43legacy_phy_write(dev, 0x5B, 0x0000); + b43legacy_phy_write(dev, 0x5C, 0x0000); + } + + old_channel = phy->channel; + if (old_channel >= 8) + b43legacy_radio_selectchannel(dev, 1, 0); + else + b43legacy_radio_selectchannel(dev, 13, 0); + + b43legacy_radio_write16(dev, 0x0050, 0x0020); + b43legacy_radio_write16(dev, 0x0050, 0x0023); + udelay(40); + if (phy->radio_rev < 6 || phy->radio_rev == 8) { + b43legacy_radio_write16(dev, 0x007C, + (b43legacy_radio_read16(dev, 0x007C) + | 0x0002)); + b43legacy_radio_write16(dev, 0x0050, 0x0020); + } + if (phy->radio_rev <= 2) { + b43legacy_radio_write16(dev, 0x0050, 0x0020); + b43legacy_radio_write16(dev, 0x005A, 0x0070); + b43legacy_radio_write16(dev, 0x005B, 0x007B); + b43legacy_radio_write16(dev, 0x005C, 0x00B0); + } + b43legacy_radio_write16(dev, 0x007A, + (b43legacy_radio_read16(dev, + 0x007A) & 0x00F8) | 0x0007); + + b43legacy_radio_selectchannel(dev, old_channel, 0); + + b43legacy_phy_write(dev, 0x0014, 0x0200); + if (phy->radio_rev >= 6) + b43legacy_phy_write(dev, 0x002A, 0x88C2); + else + b43legacy_phy_write(dev, 0x002A, 0x8AC0); + b43legacy_phy_write(dev, 0x0038, 0x0668); + b43legacy_radio_set_txpower_bg(dev, 0xFFFF, 0xFFFF, 0xFFFF); + if (phy->radio_rev == 4 || phy->radio_rev == 5) + b43legacy_phy_write(dev, 0x005D, (b43legacy_phy_read(dev, + 0x005D) & 0xFF80) | 0x0003); + if (phy->radio_rev <= 2) + b43legacy_radio_write16(dev, 0x005D, 0x000D); + + if (phy->analog == 4) { + b43legacy_write16(dev, 0x03E4, 0x0009); + b43legacy_phy_write(dev, 0x61, b43legacy_phy_read(dev, 0x61) + & 0xFFF); + } else + b43legacy_phy_write(dev, 0x0002, (b43legacy_phy_read(dev, + 0x0002) & 0xFFC0) | 0x0004); + if (phy->type == B43legacy_PHYTYPE_G) + b43legacy_write16(dev, 0x03E6, 0x0); + if (phy->type == B43legacy_PHYTYPE_B) { + b43legacy_write16(dev, 0x03E6, 0x8140); + b43legacy_phy_write(dev, 0x0016, 0x0410); + b43legacy_phy_write(dev, 0x0017, 0x0820); + b43legacy_phy_write(dev, 0x0062, 0x0007); + b43legacy_radio_init2050(dev); + b43legacy_phy_lo_g_measure(dev); + if (dev->dev->bus->sprom.boardflags_lo & + B43legacy_BFL_RSSI) { + b43legacy_calc_nrssi_slope(dev); + b43legacy_calc_nrssi_threshold(dev); + } + b43legacy_phy_init_pctl(dev); + } +} + +static void b43legacy_calc_loopback_gain(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 backup_phy[15] = {0}; + u16 backup_radio[3]; + u16 backup_bband; + u16 i; + u16 loop1_cnt; + u16 loop1_done; + u16 loop1_omitted; + u16 loop2_done; + + backup_phy[0] = b43legacy_phy_read(dev, 0x0429); + backup_phy[1] = b43legacy_phy_read(dev, 0x0001); + backup_phy[2] = b43legacy_phy_read(dev, 0x0811); + backup_phy[3] = b43legacy_phy_read(dev, 0x0812); + if (phy->rev != 1) { + backup_phy[4] = b43legacy_phy_read(dev, 0x0814); + backup_phy[5] = b43legacy_phy_read(dev, 0x0815); + } + backup_phy[6] = b43legacy_phy_read(dev, 0x005A); + backup_phy[7] = b43legacy_phy_read(dev, 0x0059); + backup_phy[8] = b43legacy_phy_read(dev, 0x0058); + backup_phy[9] = b43legacy_phy_read(dev, 0x000A); + backup_phy[10] = b43legacy_phy_read(dev, 0x0003); + backup_phy[11] = b43legacy_phy_read(dev, 0x080F); + backup_phy[12] = b43legacy_phy_read(dev, 0x0810); + backup_phy[13] = b43legacy_phy_read(dev, 0x002B); + backup_phy[14] = b43legacy_phy_read(dev, 0x0015); + b43legacy_phy_read(dev, 0x002D); /* dummy read */ + backup_bband = phy->bbatt; + backup_radio[0] = b43legacy_radio_read16(dev, 0x0052); + backup_radio[1] = b43legacy_radio_read16(dev, 0x0043); + backup_radio[2] = b43legacy_radio_read16(dev, 0x007A); + + b43legacy_phy_write(dev, 0x0429, + b43legacy_phy_read(dev, 0x0429) & 0x3FFF); + b43legacy_phy_write(dev, 0x0001, + b43legacy_phy_read(dev, 0x0001) & 0x8000); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x0002); + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) & 0xFFFD); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x0001); + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) & 0xFFFE); + if (phy->rev != 1) { + b43legacy_phy_write(dev, 0x0814, + b43legacy_phy_read(dev, 0x0814) | 0x0001); + b43legacy_phy_write(dev, 0x0815, + b43legacy_phy_read(dev, 0x0815) & 0xFFFE); + b43legacy_phy_write(dev, 0x0814, + b43legacy_phy_read(dev, 0x0814) | 0x0002); + b43legacy_phy_write(dev, 0x0815, + b43legacy_phy_read(dev, 0x0815) & 0xFFFD); + } + b43legacy_phy_write(dev, 0x0811, b43legacy_phy_read(dev, 0x0811) | + 0x000C); + b43legacy_phy_write(dev, 0x0812, b43legacy_phy_read(dev, 0x0812) | + 0x000C); + + b43legacy_phy_write(dev, 0x0811, (b43legacy_phy_read(dev, 0x0811) + & 0xFFCF) | 0x0030); + b43legacy_phy_write(dev, 0x0812, (b43legacy_phy_read(dev, 0x0812) + & 0xFFCF) | 0x0010); + + b43legacy_phy_write(dev, 0x005A, 0x0780); + b43legacy_phy_write(dev, 0x0059, 0xC810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + if (phy->analog == 0) + b43legacy_phy_write(dev, 0x0003, 0x0122); + else + b43legacy_phy_write(dev, 0x000A, + b43legacy_phy_read(dev, 0x000A) + | 0x2000); + if (phy->rev != 1) { + b43legacy_phy_write(dev, 0x0814, + b43legacy_phy_read(dev, 0x0814) | 0x0004); + b43legacy_phy_write(dev, 0x0815, + b43legacy_phy_read(dev, 0x0815) & 0xFFFB); + } + b43legacy_phy_write(dev, 0x0003, + (b43legacy_phy_read(dev, 0x0003) + & 0xFF9F) | 0x0040); + if (phy->radio_ver == 0x2050 && phy->radio_rev == 2) { + b43legacy_radio_write16(dev, 0x0052, 0x0000); + b43legacy_radio_write16(dev, 0x0043, + (b43legacy_radio_read16(dev, 0x0043) + & 0xFFF0) | 0x0009); + loop1_cnt = 9; + } else if (phy->radio_rev == 8) { + b43legacy_radio_write16(dev, 0x0043, 0x000F); + loop1_cnt = 15; + } else + loop1_cnt = 0; + + b43legacy_phy_set_baseband_attenuation(dev, 11); + + if (phy->rev >= 3) + b43legacy_phy_write(dev, 0x080F, 0xC020); + else + b43legacy_phy_write(dev, 0x080F, 0x8020); + b43legacy_phy_write(dev, 0x0810, 0x0000); + + b43legacy_phy_write(dev, 0x002B, + (b43legacy_phy_read(dev, 0x002B) + & 0xFFC0) | 0x0001); + b43legacy_phy_write(dev, 0x002B, + (b43legacy_phy_read(dev, 0x002B) + & 0xC0FF) | 0x0800); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x0100); + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) & 0xCFFF); + if (dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_EXTLNA) { + if (phy->rev >= 7) { + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) + | 0x0800); + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) + | 0x8000); + } + } + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x00F7); + + for (i = 0; i < loop1_cnt; i++) { + b43legacy_radio_write16(dev, 0x0043, loop1_cnt); + b43legacy_phy_write(dev, 0x0812, + (b43legacy_phy_read(dev, 0x0812) + & 0xF0FF) | (i << 8)); + b43legacy_phy_write(dev, 0x0015, + (b43legacy_phy_read(dev, 0x0015) + & 0x0FFF) | 0xA000); + b43legacy_phy_write(dev, 0x0015, + (b43legacy_phy_read(dev, 0x0015) + & 0x0FFF) | 0xF000); + udelay(20); + if (b43legacy_phy_read(dev, 0x002D) >= 0x0DFC) + break; + } + loop1_done = i; + loop1_omitted = loop1_cnt - loop1_done; + + loop2_done = 0; + if (loop1_done >= 8) { + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) + | 0x0030); + for (i = loop1_done - 8; i < 16; i++) { + b43legacy_phy_write(dev, 0x0812, + (b43legacy_phy_read(dev, 0x0812) + & 0xF0FF) | (i << 8)); + b43legacy_phy_write(dev, 0x0015, + (b43legacy_phy_read(dev, 0x0015) + & 0x0FFF) | 0xA000); + b43legacy_phy_write(dev, 0x0015, + (b43legacy_phy_read(dev, 0x0015) + & 0x0FFF) | 0xF000); + udelay(20); + if (b43legacy_phy_read(dev, 0x002D) >= 0x0DFC) + break; + } + } + + if (phy->rev != 1) { + b43legacy_phy_write(dev, 0x0814, backup_phy[4]); + b43legacy_phy_write(dev, 0x0815, backup_phy[5]); + } + b43legacy_phy_write(dev, 0x005A, backup_phy[6]); + b43legacy_phy_write(dev, 0x0059, backup_phy[7]); + b43legacy_phy_write(dev, 0x0058, backup_phy[8]); + b43legacy_phy_write(dev, 0x000A, backup_phy[9]); + b43legacy_phy_write(dev, 0x0003, backup_phy[10]); + b43legacy_phy_write(dev, 0x080F, backup_phy[11]); + b43legacy_phy_write(dev, 0x0810, backup_phy[12]); + b43legacy_phy_write(dev, 0x002B, backup_phy[13]); + b43legacy_phy_write(dev, 0x0015, backup_phy[14]); + + b43legacy_phy_set_baseband_attenuation(dev, backup_bband); + + b43legacy_radio_write16(dev, 0x0052, backup_radio[0]); + b43legacy_radio_write16(dev, 0x0043, backup_radio[1]); + b43legacy_radio_write16(dev, 0x007A, backup_radio[2]); + + b43legacy_phy_write(dev, 0x0811, backup_phy[2] | 0x0003); + udelay(10); + b43legacy_phy_write(dev, 0x0811, backup_phy[2]); + b43legacy_phy_write(dev, 0x0812, backup_phy[3]); + b43legacy_phy_write(dev, 0x0429, backup_phy[0]); + b43legacy_phy_write(dev, 0x0001, backup_phy[1]); + + phy->loopback_gain[0] = ((loop1_done * 6) - (loop1_omitted * 4)) - 11; + phy->loopback_gain[1] = (24 - (3 * loop2_done)) * 2; +} + +static void b43legacy_phy_initg(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 tmp; + + if (phy->rev == 1) + b43legacy_phy_initb5(dev); + else + b43legacy_phy_initb6(dev); + if (phy->rev >= 2 && phy->gmode) + b43legacy_phy_inita(dev); + + if (phy->rev >= 2) { + b43legacy_phy_write(dev, 0x0814, 0x0000); + b43legacy_phy_write(dev, 0x0815, 0x0000); + } + if (phy->rev == 2) { + b43legacy_phy_write(dev, 0x0811, 0x0000); + b43legacy_phy_write(dev, 0x0015, 0x00C0); + } + if (phy->rev > 5) { + b43legacy_phy_write(dev, 0x0811, 0x0400); + b43legacy_phy_write(dev, 0x0015, 0x00C0); + } + if (phy->gmode) { + tmp = b43legacy_phy_read(dev, 0x0400) & 0xFF; + if (tmp == 3) { + b43legacy_phy_write(dev, 0x04C2, 0x1816); + b43legacy_phy_write(dev, 0x04C3, 0x8606); + } + if (tmp == 4 || tmp == 5) { + b43legacy_phy_write(dev, 0x04C2, 0x1816); + b43legacy_phy_write(dev, 0x04C3, 0x8006); + b43legacy_phy_write(dev, 0x04CC, + (b43legacy_phy_read(dev, + 0x04CC) & 0x00FF) | + 0x1F00); + } + if (phy->rev >= 2) + b43legacy_phy_write(dev, 0x047E, 0x0078); + } + if (phy->radio_rev == 8) { + b43legacy_phy_write(dev, 0x0801, b43legacy_phy_read(dev, 0x0801) + | 0x0080); + b43legacy_phy_write(dev, 0x043E, b43legacy_phy_read(dev, 0x043E) + | 0x0004); + } + if (phy->rev >= 2 && phy->gmode) + b43legacy_calc_loopback_gain(dev); + if (phy->radio_rev != 8) { + if (phy->initval == 0xFFFF) + phy->initval = b43legacy_radio_init2050(dev); + else + b43legacy_radio_write16(dev, 0x0078, phy->initval); + } + if (phy->txctl2 == 0xFFFF) + b43legacy_phy_lo_g_measure(dev); + else { + if (phy->radio_ver == 0x2050 && phy->radio_rev == 8) + b43legacy_radio_write16(dev, 0x0052, + (phy->txctl1 << 4) | + phy->txctl2); + else + b43legacy_radio_write16(dev, 0x0052, + (b43legacy_radio_read16(dev, + 0x0052) & 0xFFF0) | + phy->txctl1); + if (phy->rev >= 6) + b43legacy_phy_write(dev, 0x0036, + (b43legacy_phy_read(dev, 0x0036) + & 0x0FFF) | (phy->txctl2 << 12)); + if (dev->dev->bus->sprom.boardflags_lo & + B43legacy_BFL_PACTRL) + b43legacy_phy_write(dev, 0x002E, 0x8075); + else + b43legacy_phy_write(dev, 0x002E, 0x807F); + if (phy->rev < 2) + b43legacy_phy_write(dev, 0x002F, 0x0101); + else + b43legacy_phy_write(dev, 0x002F, 0x0202); + } + if (phy->gmode) { + b43legacy_phy_lo_adjust(dev, 0); + b43legacy_phy_write(dev, 0x080F, 0x8078); + } + + if (!(dev->dev->bus->sprom.boardflags_lo & B43legacy_BFL_RSSI)) { + /* The specs state to update the NRSSI LT with + * the value 0x7FFFFFFF here. I think that is some weird + * compiler optimization in the original driver. + * Essentially, what we do here is resetting all NRSSI LT + * entries to -32 (see the clamp_val() in nrssi_hw_update()) + */ + b43legacy_nrssi_hw_update(dev, 0xFFFF); + b43legacy_calc_nrssi_threshold(dev); + } else if (phy->gmode || phy->rev >= 2) { + if (phy->nrssi[0] == -1000) { + B43legacy_WARN_ON(phy->nrssi[1] != -1000); + b43legacy_calc_nrssi_slope(dev); + } else { + B43legacy_WARN_ON(phy->nrssi[1] == -1000); + b43legacy_calc_nrssi_threshold(dev); + } + } + if (phy->radio_rev == 8) + b43legacy_phy_write(dev, 0x0805, 0x3230); + b43legacy_phy_init_pctl(dev); + if (dev->dev->bus->chip_id == 0x4306 + && dev->dev->bus->chip_package == 2) { + b43legacy_phy_write(dev, 0x0429, + b43legacy_phy_read(dev, 0x0429) & 0xBFFF); + b43legacy_phy_write(dev, 0x04C3, + b43legacy_phy_read(dev, 0x04C3) & 0x7FFF); + } +} + +static u16 b43legacy_phy_lo_b_r15_loop(struct b43legacy_wldev *dev) +{ + int i; + u16 ret = 0; + unsigned long flags; + + local_irq_save(flags); + for (i = 0; i < 10; i++) { + b43legacy_phy_write(dev, 0x0015, 0xAFA0); + udelay(1); + b43legacy_phy_write(dev, 0x0015, 0xEFA0); + udelay(10); + b43legacy_phy_write(dev, 0x0015, 0xFFA0); + udelay(40); + ret += b43legacy_phy_read(dev, 0x002C); + } + local_irq_restore(flags); + cond_resched(); + + return ret; +} + +void b43legacy_phy_lo_b_measure(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 regstack[12] = { 0 }; + u16 mls; + s16 fval; + int i; + int j; + + regstack[0] = b43legacy_phy_read(dev, 0x0015); + regstack[1] = b43legacy_radio_read16(dev, 0x0052) & 0xFFF0; + + if (phy->radio_ver == 0x2053) { + regstack[2] = b43legacy_phy_read(dev, 0x000A); + regstack[3] = b43legacy_phy_read(dev, 0x002A); + regstack[4] = b43legacy_phy_read(dev, 0x0035); + regstack[5] = b43legacy_phy_read(dev, 0x0003); + regstack[6] = b43legacy_phy_read(dev, 0x0001); + regstack[7] = b43legacy_phy_read(dev, 0x0030); + + regstack[8] = b43legacy_radio_read16(dev, 0x0043); + regstack[9] = b43legacy_radio_read16(dev, 0x007A); + regstack[10] = b43legacy_read16(dev, 0x03EC); + regstack[11] = b43legacy_radio_read16(dev, 0x0052) & 0x00F0; + + b43legacy_phy_write(dev, 0x0030, 0x00FF); + b43legacy_write16(dev, 0x03EC, 0x3F3F); + b43legacy_phy_write(dev, 0x0035, regstack[4] & 0xFF7F); + b43legacy_radio_write16(dev, 0x007A, regstack[9] & 0xFFF0); + } + b43legacy_phy_write(dev, 0x0015, 0xB000); + b43legacy_phy_write(dev, 0x002B, 0x0004); + + if (phy->radio_ver == 0x2053) { + b43legacy_phy_write(dev, 0x002B, 0x0203); + b43legacy_phy_write(dev, 0x002A, 0x08A3); + } + + phy->minlowsig[0] = 0xFFFF; + + for (i = 0; i < 4; i++) { + b43legacy_radio_write16(dev, 0x0052, regstack[1] | i); + b43legacy_phy_lo_b_r15_loop(dev); + } + for (i = 0; i < 10; i++) { + b43legacy_radio_write16(dev, 0x0052, regstack[1] | i); + mls = b43legacy_phy_lo_b_r15_loop(dev) / 10; + if (mls < phy->minlowsig[0]) { + phy->minlowsig[0] = mls; + phy->minlowsigpos[0] = i; + } + } + b43legacy_radio_write16(dev, 0x0052, regstack[1] + | phy->minlowsigpos[0]); + + phy->minlowsig[1] = 0xFFFF; + + for (i = -4; i < 5; i += 2) { + for (j = -4; j < 5; j += 2) { + if (j < 0) + fval = (0x0100 * i) + j + 0x0100; + else + fval = (0x0100 * i) + j; + b43legacy_phy_write(dev, 0x002F, fval); + mls = b43legacy_phy_lo_b_r15_loop(dev) / 10; + if (mls < phy->minlowsig[1]) { + phy->minlowsig[1] = mls; + phy->minlowsigpos[1] = fval; + } + } + } + phy->minlowsigpos[1] += 0x0101; + + b43legacy_phy_write(dev, 0x002F, phy->minlowsigpos[1]); + if (phy->radio_ver == 0x2053) { + b43legacy_phy_write(dev, 0x000A, regstack[2]); + b43legacy_phy_write(dev, 0x002A, regstack[3]); + b43legacy_phy_write(dev, 0x0035, regstack[4]); + b43legacy_phy_write(dev, 0x0003, regstack[5]); + b43legacy_phy_write(dev, 0x0001, regstack[6]); + b43legacy_phy_write(dev, 0x0030, regstack[7]); + + b43legacy_radio_write16(dev, 0x0043, regstack[8]); + b43legacy_radio_write16(dev, 0x007A, regstack[9]); + + b43legacy_radio_write16(dev, 0x0052, + (b43legacy_radio_read16(dev, 0x0052) + & 0x000F) | regstack[11]); + + b43legacy_write16(dev, 0x03EC, regstack[10]); + } + b43legacy_phy_write(dev, 0x0015, regstack[0]); +} + +static inline +u16 b43legacy_phy_lo_g_deviation_subval(struct b43legacy_wldev *dev, + u16 control) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 ret; + unsigned long flags; + + local_irq_save(flags); + if (phy->gmode) { + b43legacy_phy_write(dev, 0x15, 0xE300); + control <<= 8; + b43legacy_phy_write(dev, 0x0812, control | 0x00B0); + udelay(5); + b43legacy_phy_write(dev, 0x0812, control | 0x00B2); + udelay(2); + b43legacy_phy_write(dev, 0x0812, control | 0x00B3); + udelay(4); + b43legacy_phy_write(dev, 0x0015, 0xF300); + udelay(8); + } else { + b43legacy_phy_write(dev, 0x0015, control | 0xEFA0); + udelay(2); + b43legacy_phy_write(dev, 0x0015, control | 0xEFE0); + udelay(4); + b43legacy_phy_write(dev, 0x0015, control | 0xFFE0); + udelay(8); + } + ret = b43legacy_phy_read(dev, 0x002D); + local_irq_restore(flags); + cond_resched(); + + return ret; +} + +static u32 b43legacy_phy_lo_g_singledeviation(struct b43legacy_wldev *dev, + u16 control) +{ + int i; + u32 ret = 0; + + for (i = 0; i < 8; i++) + ret += b43legacy_phy_lo_g_deviation_subval(dev, control); + + return ret; +} + +/* Write the LocalOscillator CONTROL */ +static inline +void b43legacy_lo_write(struct b43legacy_wldev *dev, + struct b43legacy_lopair *pair) +{ + u16 value; + + value = (u8)(pair->low); + value |= ((u8)(pair->high)) << 8; + +#ifdef CONFIG_B43LEGACY_DEBUG + /* Sanity check. */ + if (pair->low < -8 || pair->low > 8 || + pair->high < -8 || pair->high > 8) { + b43legacydbg(dev->wl, + "WARNING: Writing invalid LOpair " + "(low: %d, high: %d)\n", + pair->low, pair->high); + dump_stack(); + } +#endif + + b43legacy_phy_write(dev, B43legacy_PHY_G_LO_CONTROL, value); +} + +static inline +struct b43legacy_lopair *b43legacy_find_lopair(struct b43legacy_wldev *dev, + u16 bbatt, + u16 rfatt, + u16 tx) +{ + static const u8 dict[10] = { 11, 10, 11, 12, 13, 12, 13, 12, 13, 12 }; + struct b43legacy_phy *phy = &dev->phy; + + if (bbatt > 6) + bbatt = 6; + B43legacy_WARN_ON(rfatt >= 10); + + if (tx == 3) + return b43legacy_get_lopair(phy, rfatt, bbatt); + return b43legacy_get_lopair(phy, dict[rfatt], bbatt); +} + +static inline +struct b43legacy_lopair *b43legacy_current_lopair(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + return b43legacy_find_lopair(dev, phy->bbatt, + phy->rfatt, phy->txctl1); +} + +/* Adjust B/G LO */ +void b43legacy_phy_lo_adjust(struct b43legacy_wldev *dev, int fixed) +{ + struct b43legacy_lopair *pair; + + if (fixed) { + /* Use fixed values. Only for initialization. */ + pair = b43legacy_find_lopair(dev, 2, 3, 0); + } else + pair = b43legacy_current_lopair(dev); + b43legacy_lo_write(dev, pair); +} + +static void b43legacy_phy_lo_g_measure_txctl2(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 txctl2 = 0; + u16 i; + u32 smallest; + u32 tmp; + + b43legacy_radio_write16(dev, 0x0052, 0x0000); + udelay(10); + smallest = b43legacy_phy_lo_g_singledeviation(dev, 0); + for (i = 0; i < 16; i++) { + b43legacy_radio_write16(dev, 0x0052, i); + udelay(10); + tmp = b43legacy_phy_lo_g_singledeviation(dev, 0); + if (tmp < smallest) { + smallest = tmp; + txctl2 = i; + } + } + phy->txctl2 = txctl2; +} + +static +void b43legacy_phy_lo_g_state(struct b43legacy_wldev *dev, + const struct b43legacy_lopair *in_pair, + struct b43legacy_lopair *out_pair, + u16 r27) +{ + static const struct b43legacy_lopair transitions[8] = { + { .high = 1, .low = 1, }, + { .high = 1, .low = 0, }, + { .high = 1, .low = -1, }, + { .high = 0, .low = -1, }, + { .high = -1, .low = -1, }, + { .high = -1, .low = 0, }, + { .high = -1, .low = 1, }, + { .high = 0, .low = 1, }, + }; + struct b43legacy_lopair lowest_transition = { + .high = in_pair->high, + .low = in_pair->low, + }; + struct b43legacy_lopair tmp_pair; + struct b43legacy_lopair transition; + int i = 12; + int state = 0; + int found_lower; + int j; + int begin; + int end; + u32 lowest_deviation; + u32 tmp; + + /* Note that in_pair and out_pair can point to the same pair. + * Be careful. */ + + b43legacy_lo_write(dev, &lowest_transition); + lowest_deviation = b43legacy_phy_lo_g_singledeviation(dev, r27); + do { + found_lower = 0; + B43legacy_WARN_ON(!(state >= 0 && state <= 8)); + if (state == 0) { + begin = 1; + end = 8; + } else if (state % 2 == 0) { + begin = state - 1; + end = state + 1; + } else { + begin = state - 2; + end = state + 2; + } + if (begin < 1) + begin += 8; + if (end > 8) + end -= 8; + + j = begin; + tmp_pair.high = lowest_transition.high; + tmp_pair.low = lowest_transition.low; + while (1) { + B43legacy_WARN_ON(!(j >= 1 && j <= 8)); + transition.high = tmp_pair.high + + transitions[j - 1].high; + transition.low = tmp_pair.low + transitions[j - 1].low; + if ((abs(transition.low) < 9) + && (abs(transition.high) < 9)) { + b43legacy_lo_write(dev, &transition); + tmp = b43legacy_phy_lo_g_singledeviation(dev, + r27); + if (tmp < lowest_deviation) { + lowest_deviation = tmp; + state = j; + found_lower = 1; + + lowest_transition.high = + transition.high; + lowest_transition.low = transition.low; + } + } + if (j == end) + break; + if (j == 8) + j = 1; + else + j++; + } + } while (i-- && found_lower); + + out_pair->high = lowest_transition.high; + out_pair->low = lowest_transition.low; +} + +/* Set the baseband attenuation value on chip. */ +void b43legacy_phy_set_baseband_attenuation(struct b43legacy_wldev *dev, + u16 bbatt) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 value; + + if (phy->analog == 0) { + value = (b43legacy_read16(dev, 0x03E6) & 0xFFF0); + value |= (bbatt & 0x000F); + b43legacy_write16(dev, 0x03E6, value); + return; + } + + if (phy->analog > 1) { + value = b43legacy_phy_read(dev, 0x0060) & 0xFFC3; + value |= (bbatt << 2) & 0x003C; + } else { + value = b43legacy_phy_read(dev, 0x0060) & 0xFF87; + value |= (bbatt << 3) & 0x0078; + } + b43legacy_phy_write(dev, 0x0060, value); +} + +/* https://bcm-specs.sipsolutions.net/LocalOscillator/Measure */ +void b43legacy_phy_lo_g_measure(struct b43legacy_wldev *dev) +{ + static const u8 pairorder[10] = { 3, 1, 5, 7, 9, 2, 0, 4, 6, 8 }; + const int is_initializing = (b43legacy_status(dev) + < B43legacy_STAT_STARTED); + struct b43legacy_phy *phy = &dev->phy; + u16 h; + u16 i; + u16 oldi = 0; + u16 j; + struct b43legacy_lopair control; + struct b43legacy_lopair *tmp_control; + u16 tmp; + u16 regstack[16] = { 0 }; + u8 oldchannel; + + /* XXX: What are these? */ + u8 r27 = 0; + u16 r31; + + oldchannel = phy->channel; + /* Setup */ + if (phy->gmode) { + regstack[0] = b43legacy_phy_read(dev, B43legacy_PHY_G_CRS); + regstack[1] = b43legacy_phy_read(dev, 0x0802); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, regstack[0] + & 0x7FFF); + b43legacy_phy_write(dev, 0x0802, regstack[1] & 0xFFFC); + } + regstack[3] = b43legacy_read16(dev, 0x03E2); + b43legacy_write16(dev, 0x03E2, regstack[3] | 0x8000); + regstack[4] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT); + regstack[5] = b43legacy_phy_read(dev, 0x15); + regstack[6] = b43legacy_phy_read(dev, 0x2A); + regstack[7] = b43legacy_phy_read(dev, 0x35); + regstack[8] = b43legacy_phy_read(dev, 0x60); + regstack[9] = b43legacy_radio_read16(dev, 0x43); + regstack[10] = b43legacy_radio_read16(dev, 0x7A); + regstack[11] = b43legacy_radio_read16(dev, 0x52); + if (phy->gmode) { + regstack[12] = b43legacy_phy_read(dev, 0x0811); + regstack[13] = b43legacy_phy_read(dev, 0x0812); + regstack[14] = b43legacy_phy_read(dev, 0x0814); + regstack[15] = b43legacy_phy_read(dev, 0x0815); + } + b43legacy_radio_selectchannel(dev, 6, 0); + if (phy->gmode) { + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, regstack[0] + & 0x7FFF); + b43legacy_phy_write(dev, 0x0802, regstack[1] & 0xFFFC); + b43legacy_dummy_transmission(dev); + } + b43legacy_radio_write16(dev, 0x0043, 0x0006); + + b43legacy_phy_set_baseband_attenuation(dev, 2); + + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, 0x0000); + b43legacy_phy_write(dev, 0x002E, 0x007F); + b43legacy_phy_write(dev, 0x080F, 0x0078); + b43legacy_phy_write(dev, 0x0035, regstack[7] & ~(1 << 7)); + b43legacy_radio_write16(dev, 0x007A, regstack[10] & 0xFFF0); + b43legacy_phy_write(dev, 0x002B, 0x0203); + b43legacy_phy_write(dev, 0x002A, 0x08A3); + if (phy->gmode) { + b43legacy_phy_write(dev, 0x0814, regstack[14] | 0x0003); + b43legacy_phy_write(dev, 0x0815, regstack[15] & 0xFFFC); + b43legacy_phy_write(dev, 0x0811, 0x01B3); + b43legacy_phy_write(dev, 0x0812, 0x00B2); + } + if (is_initializing) + b43legacy_phy_lo_g_measure_txctl2(dev); + b43legacy_phy_write(dev, 0x080F, 0x8078); + + /* Measure */ + control.low = 0; + control.high = 0; + for (h = 0; h < 10; h++) { + /* Loop over each possible RadioAttenuation (0-9) */ + i = pairorder[h]; + if (is_initializing) { + if (i == 3) { + control.low = 0; + control.high = 0; + } else if (((i % 2 == 1) && (oldi % 2 == 1)) || + ((i % 2 == 0) && (oldi % 2 == 0))) { + tmp_control = b43legacy_get_lopair(phy, oldi, + 0); + memcpy(&control, tmp_control, sizeof(control)); + } else { + tmp_control = b43legacy_get_lopair(phy, 3, 0); + memcpy(&control, tmp_control, sizeof(control)); + } + } + /* Loop over each possible BasebandAttenuation/2 */ + for (j = 0; j < 4; j++) { + if (is_initializing) { + tmp = i * 2 + j; + r27 = 0; + r31 = 0; + if (tmp > 14) { + r31 = 1; + if (tmp > 17) + r27 = 1; + if (tmp > 19) + r27 = 2; + } + } else { + tmp_control = b43legacy_get_lopair(phy, i, + j * 2); + if (!tmp_control->used) + continue; + memcpy(&control, tmp_control, sizeof(control)); + r27 = 3; + r31 = 0; + } + b43legacy_radio_write16(dev, 0x43, i); + b43legacy_radio_write16(dev, 0x52, phy->txctl2); + udelay(10); + cond_resched(); + + b43legacy_phy_set_baseband_attenuation(dev, j * 2); + + tmp = (regstack[10] & 0xFFF0); + if (r31) + tmp |= 0x0008; + b43legacy_radio_write16(dev, 0x007A, tmp); + + tmp_control = b43legacy_get_lopair(phy, i, j * 2); + b43legacy_phy_lo_g_state(dev, &control, tmp_control, + r27); + } + oldi = i; + } + /* Loop over each possible RadioAttenuation (10-13) */ + for (i = 10; i < 14; i++) { + /* Loop over each possible BasebandAttenuation/2 */ + for (j = 0; j < 4; j++) { + if (is_initializing) { + tmp_control = b43legacy_get_lopair(phy, i - 9, + j * 2); + memcpy(&control, tmp_control, sizeof(control)); + /* FIXME: The next line is wrong, as the + * following if statement can never trigger. */ + tmp = (i - 9) * 2 + j - 5; + r27 = 0; + r31 = 0; + if (tmp > 14) { + r31 = 1; + if (tmp > 17) + r27 = 1; + if (tmp > 19) + r27 = 2; + } + } else { + tmp_control = b43legacy_get_lopair(phy, i - 9, + j * 2); + if (!tmp_control->used) + continue; + memcpy(&control, tmp_control, sizeof(control)); + r27 = 3; + r31 = 0; + } + b43legacy_radio_write16(dev, 0x43, i - 9); + /* FIXME: shouldn't txctl1 be zero in the next line + * and 3 in the loop above? */ + b43legacy_radio_write16(dev, 0x52, + phy->txctl2 + | (3/*txctl1*/ << 4)); + udelay(10); + cond_resched(); + + b43legacy_phy_set_baseband_attenuation(dev, j * 2); + + tmp = (regstack[10] & 0xFFF0); + if (r31) + tmp |= 0x0008; + b43legacy_radio_write16(dev, 0x7A, tmp); + + tmp_control = b43legacy_get_lopair(phy, i, j * 2); + b43legacy_phy_lo_g_state(dev, &control, tmp_control, + r27); + } + } + + /* Restoration */ + if (phy->gmode) { + b43legacy_phy_write(dev, 0x0015, 0xE300); + b43legacy_phy_write(dev, 0x0812, (r27 << 8) | 0xA0); + udelay(5); + b43legacy_phy_write(dev, 0x0812, (r27 << 8) | 0xA2); + udelay(2); + b43legacy_phy_write(dev, 0x0812, (r27 << 8) | 0xA3); + cond_resched(); + } else + b43legacy_phy_write(dev, 0x0015, r27 | 0xEFA0); + b43legacy_phy_lo_adjust(dev, is_initializing); + b43legacy_phy_write(dev, 0x002E, 0x807F); + if (phy->gmode) + b43legacy_phy_write(dev, 0x002F, 0x0202); + else + b43legacy_phy_write(dev, 0x002F, 0x0101); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, regstack[4]); + b43legacy_phy_write(dev, 0x0015, regstack[5]); + b43legacy_phy_write(dev, 0x002A, regstack[6]); + b43legacy_phy_write(dev, 0x0035, regstack[7]); + b43legacy_phy_write(dev, 0x0060, regstack[8]); + b43legacy_radio_write16(dev, 0x0043, regstack[9]); + b43legacy_radio_write16(dev, 0x007A, regstack[10]); + regstack[11] &= 0x00F0; + regstack[11] |= (b43legacy_radio_read16(dev, 0x52) & 0x000F); + b43legacy_radio_write16(dev, 0x52, regstack[11]); + b43legacy_write16(dev, 0x03E2, regstack[3]); + if (phy->gmode) { + b43legacy_phy_write(dev, 0x0811, regstack[12]); + b43legacy_phy_write(dev, 0x0812, regstack[13]); + b43legacy_phy_write(dev, 0x0814, regstack[14]); + b43legacy_phy_write(dev, 0x0815, regstack[15]); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, regstack[0]); + b43legacy_phy_write(dev, 0x0802, regstack[1]); + } + b43legacy_radio_selectchannel(dev, oldchannel, 1); + +#ifdef CONFIG_B43LEGACY_DEBUG + { + /* Sanity check for all lopairs. */ + for (i = 0; i < B43legacy_LO_COUNT; i++) { + tmp_control = phy->_lo_pairs + i; + if (tmp_control->low < -8 || tmp_control->low > 8 || + tmp_control->high < -8 || tmp_control->high > 8) + b43legacywarn(dev->wl, + "WARNING: Invalid LOpair (low: %d, high:" + " %d, index: %d)\n", + tmp_control->low, tmp_control->high, i); + } + } +#endif /* CONFIG_B43LEGACY_DEBUG */ +} + +static +void b43legacy_phy_lo_mark_current_used(struct b43legacy_wldev *dev) +{ + struct b43legacy_lopair *pair; + + pair = b43legacy_current_lopair(dev); + pair->used = 1; +} + +void b43legacy_phy_lo_mark_all_unused(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + struct b43legacy_lopair *pair; + int i; + + for (i = 0; i < B43legacy_LO_COUNT; i++) { + pair = phy->_lo_pairs + i; + pair->used = 0; + } +} + +/* https://bcm-specs.sipsolutions.net/EstimatePowerOut + * This function converts a TSSI value to dBm in Q5.2 + */ +static s8 b43legacy_phy_estimate_power_out(struct b43legacy_wldev *dev, s8 tssi) +{ + struct b43legacy_phy *phy = &dev->phy; + s8 dbm = 0; + s32 tmp; + + tmp = phy->idle_tssi; + tmp += tssi; + tmp -= phy->savedpctlreg; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + tmp = clamp_val(tmp, 0x00, 0x3F); + dbm = phy->tssi2dbm[tmp]; + break; + default: + B43legacy_BUG_ON(1); + } + + return dbm; +} + +/* https://bcm-specs.sipsolutions.net/RecalculateTransmissionPower */ +void b43legacy_phy_xmitpower(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 tmp; + u16 txpower; + s8 v0; + s8 v1; + s8 v2; + s8 v3; + s8 average; + int max_pwr; + s16 desired_pwr; + s16 estimated_pwr; + s16 pwr_adjust; + s16 radio_att_delta; + s16 baseband_att_delta; + s16 radio_attenuation; + s16 baseband_attenuation; + + if (phy->savedpctlreg == 0xFFFF) + return; + if ((dev->dev->bus->boardinfo.type == 0x0416) && + is_bcm_board_vendor(dev)) + return; +#ifdef CONFIG_B43LEGACY_DEBUG + if (phy->manual_txpower_control) + return; +#endif + + B43legacy_BUG_ON(!(phy->type == B43legacy_PHYTYPE_B || + phy->type == B43legacy_PHYTYPE_G)); + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x0058); + v0 = (s8)(tmp & 0x00FF); + v1 = (s8)((tmp & 0xFF00) >> 8); + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x005A); + v2 = (s8)(tmp & 0x00FF); + v3 = (s8)((tmp & 0xFF00) >> 8); + tmp = 0; + + if (v0 == 0x7F || v1 == 0x7F || v2 == 0x7F || v3 == 0x7F) { + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + 0x0070); + v0 = (s8)(tmp & 0x00FF); + v1 = (s8)((tmp & 0xFF00) >> 8); + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, + 0x0072); + v2 = (s8)(tmp & 0x00FF); + v3 = (s8)((tmp & 0xFF00) >> 8); + if (v0 == 0x7F || v1 == 0x7F || v2 == 0x7F || v3 == 0x7F) + return; + v0 = (v0 + 0x20) & 0x3F; + v1 = (v1 + 0x20) & 0x3F; + v2 = (v2 + 0x20) & 0x3F; + v3 = (v3 + 0x20) & 0x3F; + tmp = 1; + } + b43legacy_radio_clear_tssi(dev); + + average = (v0 + v1 + v2 + v3 + 2) / 4; + + if (tmp && (b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x005E) + & 0x8)) + average -= 13; + + estimated_pwr = b43legacy_phy_estimate_power_out(dev, average); + + max_pwr = dev->dev->bus->sprom.maxpwr_bg; + + if ((dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_PACTRL) && + (phy->type == B43legacy_PHYTYPE_G)) + max_pwr -= 0x3; + if (unlikely(max_pwr <= 0)) { + b43legacywarn(dev->wl, "Invalid max-TX-power value in SPROM." + "\n"); + max_pwr = 74; /* fake it */ + dev->dev->bus->sprom.maxpwr_bg = max_pwr; + } + + /* Use regulatory information to get the maximum power. + * In the absence of such data from mac80211, we will use 20 dBm, which + * is the value for the EU, US, Canada, and most of the world. + * The regulatory maximum is reduced by the antenna gain (from sprom) + * and 1.5 dBm (a safety factor??). The result is in Q5.2 format + * which accounts for the factor of 4 */ +#define REG_MAX_PWR 20 + max_pwr = min(REG_MAX_PWR * 4 + - dev->dev->bus->sprom.antenna_gain.a0 + - 0x6, max_pwr); + + /* find the desired power in Q5.2 - power_level is in dBm + * and limit it - max_pwr is already in Q5.2 */ + desired_pwr = clamp_val(phy->power_level << 2, 0, max_pwr); + if (b43legacy_debug(dev, B43legacy_DBG_XMITPOWER)) + b43legacydbg(dev->wl, "Current TX power output: " Q52_FMT + " dBm, Desired TX power output: " Q52_FMT + " dBm\n", Q52_ARG(estimated_pwr), + Q52_ARG(desired_pwr)); + /* Check if we need to adjust the current power. The factor of 2 is + * for damping */ + pwr_adjust = (desired_pwr - estimated_pwr) / 2; + /* RF attenuation delta + * The minus sign is because lower attenuation => more power */ + radio_att_delta = -(pwr_adjust + 7) >> 3; + /* Baseband attenuation delta */ + baseband_att_delta = -(pwr_adjust >> 1) - (4 * radio_att_delta); + /* Do we need to adjust anything? */ + if ((radio_att_delta == 0) && (baseband_att_delta == 0)) { + b43legacy_phy_lo_mark_current_used(dev); + return; + } + + /* Calculate the new attenuation values. */ + baseband_attenuation = phy->bbatt; + baseband_attenuation += baseband_att_delta; + radio_attenuation = phy->rfatt; + radio_attenuation += radio_att_delta; + + /* Get baseband and radio attenuation values into permitted ranges. + * baseband 0-11, radio 0-9. + * Radio attenuation affects power level 4 times as much as baseband. + */ + if (radio_attenuation < 0) { + baseband_attenuation -= (4 * -radio_attenuation); + radio_attenuation = 0; + } else if (radio_attenuation > 9) { + baseband_attenuation += (4 * (radio_attenuation - 9)); + radio_attenuation = 9; + } else { + while (baseband_attenuation < 0 && radio_attenuation > 0) { + baseband_attenuation += 4; + radio_attenuation--; + } + while (baseband_attenuation > 11 && radio_attenuation < 9) { + baseband_attenuation -= 4; + radio_attenuation++; + } + } + baseband_attenuation = clamp_val(baseband_attenuation, 0, 11); + + txpower = phy->txctl1; + if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 2)) { + if (radio_attenuation <= 1) { + if (txpower == 0) { + txpower = 3; + radio_attenuation += 2; + baseband_attenuation += 2; + } else if (dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_PACTRL) { + baseband_attenuation += 4 * + (radio_attenuation - 2); + radio_attenuation = 2; + } + } else if (radio_attenuation > 4 && txpower != 0) { + txpower = 0; + if (baseband_attenuation < 3) { + radio_attenuation -= 3; + baseband_attenuation += 2; + } else { + radio_attenuation -= 2; + baseband_attenuation -= 2; + } + } + } + /* Save the control values */ + phy->txctl1 = txpower; + baseband_attenuation = clamp_val(baseband_attenuation, 0, 11); + radio_attenuation = clamp_val(radio_attenuation, 0, 9); + phy->rfatt = radio_attenuation; + phy->bbatt = baseband_attenuation; + + /* Adjust the hardware */ + b43legacy_phy_lock(dev); + b43legacy_radio_lock(dev); + b43legacy_radio_set_txpower_bg(dev, baseband_attenuation, + radio_attenuation, txpower); + b43legacy_phy_lo_mark_current_used(dev); + b43legacy_radio_unlock(dev); + b43legacy_phy_unlock(dev); +} + +static inline +s32 b43legacy_tssi2dbm_ad(s32 num, s32 den) +{ + if (num < 0) + return num/den; + else + return (num+den/2)/den; +} + +static inline +s8 b43legacy_tssi2dbm_entry(s8 entry [], u8 index, s16 pab0, s16 pab1, s16 pab2) +{ + s32 m1; + s32 m2; + s32 f = 256; + s32 q; + s32 delta; + s8 i = 0; + + m1 = b43legacy_tssi2dbm_ad(16 * pab0 + index * pab1, 32); + m2 = max(b43legacy_tssi2dbm_ad(32768 + index * pab2, 256), 1); + do { + if (i > 15) + return -EINVAL; + q = b43legacy_tssi2dbm_ad(f * 4096 - + b43legacy_tssi2dbm_ad(m2 * f, 16) * + f, 2048); + delta = abs(q - f); + f = q; + i++; + } while (delta >= 2); + entry[index] = clamp_val(b43legacy_tssi2dbm_ad(m1 * f, 8192), + -127, 128); + return 0; +} + +/* http://bcm-specs.sipsolutions.net/TSSI_to_DBM_Table */ +int b43legacy_phy_init_tssi2dbm_table(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + s16 pab0; + s16 pab1; + s16 pab2; + u8 idx; + s8 *dyn_tssi2dbm; + + B43legacy_WARN_ON(!(phy->type == B43legacy_PHYTYPE_B || + phy->type == B43legacy_PHYTYPE_G)); + pab0 = (s16)(dev->dev->bus->sprom.pa0b0); + pab1 = (s16)(dev->dev->bus->sprom.pa0b1); + pab2 = (s16)(dev->dev->bus->sprom.pa0b2); + + if ((dev->dev->bus->chip_id == 0x4301) && (phy->radio_ver != 0x2050)) { + phy->idle_tssi = 0x34; + phy->tssi2dbm = b43legacy_tssi2dbm_b_table; + return 0; + } + + if (pab0 != 0 && pab1 != 0 && pab2 != 0 && + pab0 != -1 && pab1 != -1 && pab2 != -1) { + /* The pabX values are set in SPROM. Use them. */ + if ((s8)dev->dev->bus->sprom.itssi_bg != 0 && + (s8)dev->dev->bus->sprom.itssi_bg != -1) + phy->idle_tssi = (s8)(dev->dev->bus->sprom. + itssi_bg); + else + phy->idle_tssi = 62; + dyn_tssi2dbm = kmalloc(64, GFP_KERNEL); + if (dyn_tssi2dbm == NULL) { + b43legacyerr(dev->wl, "Could not allocate memory " + "for tssi2dbm table\n"); + return -ENOMEM; + } + for (idx = 0; idx < 64; idx++) + if (b43legacy_tssi2dbm_entry(dyn_tssi2dbm, idx, pab0, + pab1, pab2)) { + phy->tssi2dbm = NULL; + b43legacyerr(dev->wl, "Could not generate " + "tssi2dBm table\n"); + kfree(dyn_tssi2dbm); + return -ENODEV; + } + phy->tssi2dbm = dyn_tssi2dbm; + phy->dyn_tssi_tbl = 1; + } else { + /* pabX values not set in SPROM. */ + switch (phy->type) { + case B43legacy_PHYTYPE_B: + phy->idle_tssi = 0x34; + phy->tssi2dbm = b43legacy_tssi2dbm_b_table; + break; + case B43legacy_PHYTYPE_G: + phy->idle_tssi = 0x34; + phy->tssi2dbm = b43legacy_tssi2dbm_g_table; + break; + } + } + + return 0; +} + +int b43legacy_phy_init(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + int err = -ENODEV; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + switch (phy->rev) { + case 2: + b43legacy_phy_initb2(dev); + err = 0; + break; + case 4: + b43legacy_phy_initb4(dev); + err = 0; + break; + case 5: + b43legacy_phy_initb5(dev); + err = 0; + break; + case 6: + b43legacy_phy_initb6(dev); + err = 0; + break; + } + break; + case B43legacy_PHYTYPE_G: + b43legacy_phy_initg(dev); + err = 0; + break; + } + if (err) + b43legacyerr(dev->wl, "Unknown PHYTYPE found\n"); + + return err; +} + +void b43legacy_phy_set_antenna_diversity(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 antennadiv; + u16 offset; + u16 value; + u32 ucodeflags; + + antennadiv = phy->antenna_diversity; + + if (antennadiv == 0xFFFF) + antennadiv = 3; + B43legacy_WARN_ON(antennadiv > 3); + + ucodeflags = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET); + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + ucodeflags & ~B43legacy_UCODEFLAG_AUTODIV); + + switch (phy->type) { + case B43legacy_PHYTYPE_G: + offset = 0x0400; + + if (antennadiv == 2) + value = (3/*automatic*/ << 7); + else + value = (antennadiv << 7); + b43legacy_phy_write(dev, offset + 1, + (b43legacy_phy_read(dev, offset + 1) + & 0x7E7F) | value); + + if (antennadiv >= 2) { + if (antennadiv == 2) + value = (antennadiv << 7); + else + value = (0/*force0*/ << 7); + b43legacy_phy_write(dev, offset + 0x2B, + (b43legacy_phy_read(dev, + offset + 0x2B) + & 0xFEFF) | value); + } + + if (phy->type == B43legacy_PHYTYPE_G) { + if (antennadiv >= 2) + b43legacy_phy_write(dev, 0x048C, + b43legacy_phy_read(dev, + 0x048C) | 0x2000); + else + b43legacy_phy_write(dev, 0x048C, + b43legacy_phy_read(dev, + 0x048C) & ~0x2000); + if (phy->rev >= 2) { + b43legacy_phy_write(dev, 0x0461, + b43legacy_phy_read(dev, + 0x0461) | 0x0010); + b43legacy_phy_write(dev, 0x04AD, + (b43legacy_phy_read(dev, + 0x04AD) + & 0x00FF) | 0x0015); + if (phy->rev == 2) + b43legacy_phy_write(dev, 0x0427, + 0x0008); + else + b43legacy_phy_write(dev, 0x0427, + (b43legacy_phy_read(dev, 0x0427) + & 0x00FF) | 0x0008); + } else if (phy->rev >= 6) + b43legacy_phy_write(dev, 0x049B, 0x00DC); + } else { + if (phy->rev < 3) + b43legacy_phy_write(dev, 0x002B, + (b43legacy_phy_read(dev, + 0x002B) & 0x00FF) + | 0x0024); + else { + b43legacy_phy_write(dev, 0x0061, + b43legacy_phy_read(dev, + 0x0061) | 0x0010); + if (phy->rev == 3) { + b43legacy_phy_write(dev, 0x0093, + 0x001D); + b43legacy_phy_write(dev, 0x0027, + 0x0008); + } else { + b43legacy_phy_write(dev, 0x0093, + 0x003A); + b43legacy_phy_write(dev, 0x0027, + (b43legacy_phy_read(dev, 0x0027) + & 0x00FF) | 0x0008); + } + } + } + break; + case B43legacy_PHYTYPE_B: + if (dev->dev->id.revision == 2) + value = (3/*automatic*/ << 7); + else + value = (antennadiv << 7); + b43legacy_phy_write(dev, 0x03E2, + (b43legacy_phy_read(dev, 0x03E2) + & 0xFE7F) | value); + break; + default: + B43legacy_WARN_ON(1); + } + + if (antennadiv >= 2) { + ucodeflags = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET); + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + ucodeflags | B43legacy_UCODEFLAG_AUTODIV); + } + + phy->antenna_diversity = antennadiv; +} + +/* Set the PowerSavingControlBits. + * Bitvalues: + * 0 => unset the bit + * 1 => set the bit + * -1 => calculate the bit + */ +void b43legacy_power_saving_ctl_bits(struct b43legacy_wldev *dev, + int bit25, int bit26) +{ + int i; + u32 status; + +/* FIXME: Force 25 to off and 26 to on for now: */ +bit25 = 0; +bit26 = 1; + + if (bit25 == -1) { + /* TODO: If powersave is not off and FIXME is not set and we + * are not in adhoc and thus is not an AP and we arei + * associated, set bit 25 */ + } + if (bit26 == -1) { + /* TODO: If the device is awake or this is an AP, or we are + * scanning, or FIXME, or we are associated, or FIXME, + * or the latest PS-Poll packet sent was successful, + * set bit26 */ + } + status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + if (bit25) + status |= B43legacy_MACCTL_HWPS; + else + status &= ~B43legacy_MACCTL_HWPS; + if (bit26) + status |= B43legacy_MACCTL_AWAKE; + else + status &= ~B43legacy_MACCTL_AWAKE; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); + if (bit26 && dev->dev->id.revision >= 5) { + for (i = 0; i < 100; i++) { + if (b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, + 0x0040) != 4) + break; + udelay(10); + } + } +} diff --git a/drivers/net/wireless/broadcom/b43legacy/phy.h b/drivers/net/wireless/broadcom/b43legacy/phy.h new file mode 100644 index 000000000..bb2c492da --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/phy.h @@ -0,0 +1,196 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + + Broadcom B43legacy wireless driver + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, + Stefano Brivio <stefano.brivio@polimi.it> + Michael Buesch <m@bues.ch> + Danny van Dyk <kugelfang@gentoo.org> + Andreas Jaggi <andreas.jaggi@waterwave.ch> + Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> + + Some parts of the code in this file are derived from the ipw2200 + driver Copyright(c) 2003 - 2004 Intel Corporation. + + +*/ + +#ifndef B43legacy_PHY_H_ +#define B43legacy_PHY_H_ + +#include <linux/types.h> + +enum { + B43legacy_ANTENNA0, /* Antenna 0 */ + B43legacy_ANTENNA1, /* Antenna 0 */ + B43legacy_ANTENNA_AUTO1, /* Automatic, starting with antenna 1 */ + B43legacy_ANTENNA_AUTO0, /* Automatic, starting with antenna 0 */ + + B43legacy_ANTENNA_AUTO = B43legacy_ANTENNA_AUTO0, + B43legacy_ANTENNA_DEFAULT = B43legacy_ANTENNA_AUTO, +}; + +enum { + B43legacy_INTERFMODE_NONE, + B43legacy_INTERFMODE_NONWLAN, + B43legacy_INTERFMODE_MANUALWLAN, + B43legacy_INTERFMODE_AUTOWLAN, +}; + +/*** PHY Registers ***/ + +/* Routing */ +#define B43legacy_PHYROUTE_OFDM_GPHY 0x400 +#define B43legacy_PHYROUTE_EXT_GPHY 0x800 + +/* Base registers. */ +#define B43legacy_PHY_BASE(reg) (reg) +/* OFDM (A) registers of a G-PHY */ +#define B43legacy_PHY_OFDM(reg) ((reg) | B43legacy_PHYROUTE_OFDM_GPHY) +/* Extended G-PHY registers */ +#define B43legacy_PHY_EXTG(reg) ((reg) | B43legacy_PHYROUTE_EXT_GPHY) + + +/* Extended G-PHY Registers */ +#define B43legacy_PHY_CLASSCTL B43legacy_PHY_EXTG(0x02) /* Classify control */ +#define B43legacy_PHY_GTABCTL B43legacy_PHY_EXTG(0x03) /* G-PHY table control (see below) */ +#define B43legacy_PHY_GTABOFF 0x03FF /* G-PHY table offset (see below) */ +#define B43legacy_PHY_GTABNR 0xFC00 /* G-PHY table number (see below) */ +#define B43legacy_PHY_GTABNR_SHIFT 10 +#define B43legacy_PHY_GTABDATA B43legacy_PHY_EXTG(0x04) /* G-PHY table data */ +#define B43legacy_PHY_LO_MASK B43legacy_PHY_EXTG(0x0F) /* Local Oscillator control mask */ +#define B43legacy_PHY_LO_CTL B43legacy_PHY_EXTG(0x10) /* Local Oscillator control */ +#define B43legacy_PHY_RFOVER B43legacy_PHY_EXTG(0x11) /* RF override */ +#define B43legacy_PHY_RFOVERVAL B43legacy_PHY_EXTG(0x12) /* RF override value */ +/*** OFDM table numbers ***/ +#define B43legacy_OFDMTAB(number, offset) \ + (((number) << B43legacy_PHY_OTABLENR_SHIFT) \ + | (offset)) +#define B43legacy_OFDMTAB_AGC1 B43legacy_OFDMTAB(0x00, 0) +#define B43legacy_OFDMTAB_GAIN0 B43legacy_OFDMTAB(0x00, 0) +#define B43legacy_OFDMTAB_GAINX B43legacy_OFDMTAB(0x01, 0) +#define B43legacy_OFDMTAB_GAIN1 B43legacy_OFDMTAB(0x01, 4) +#define B43legacy_OFDMTAB_AGC3 B43legacy_OFDMTAB(0x02, 0) +#define B43legacy_OFDMTAB_GAIN2 B43legacy_OFDMTAB(0x02, 3) +#define B43legacy_OFDMTAB_LNAHPFGAIN1 B43legacy_OFDMTAB(0x03, 0) +#define B43legacy_OFDMTAB_WRSSI B43legacy_OFDMTAB(0x04, 0) +#define B43legacy_OFDMTAB_LNAHPFGAIN2 B43legacy_OFDMTAB(0x04, 0) +#define B43legacy_OFDMTAB_NOISESCALE B43legacy_OFDMTAB(0x05, 0) +#define B43legacy_OFDMTAB_AGC2 B43legacy_OFDMTAB(0x06, 0) +#define B43legacy_OFDMTAB_ROTOR B43legacy_OFDMTAB(0x08, 0) +#define B43legacy_OFDMTAB_ADVRETARD B43legacy_OFDMTAB(0x09, 0) +#define B43legacy_OFDMTAB_DAC B43legacy_OFDMTAB(0x0C, 0) +#define B43legacy_OFDMTAB_DC B43legacy_OFDMTAB(0x0E, 7) +#define B43legacy_OFDMTAB_PWRDYN2 B43legacy_OFDMTAB(0x0E, 12) +#define B43legacy_OFDMTAB_LNAGAIN B43legacy_OFDMTAB(0x0E, 13) + +#define B43legacy_OFDMTAB_LPFGAIN B43legacy_OFDMTAB(0x0F, 12) +#define B43legacy_OFDMTAB_RSSI B43legacy_OFDMTAB(0x10, 0) + +#define B43legacy_OFDMTAB_AGC1_R1 B43legacy_OFDMTAB(0x13, 0) +#define B43legacy_OFDMTAB_GAINX_R1 B43legacy_OFDMTAB(0x14, 0) +#define B43legacy_OFDMTAB_MINSIGSQ B43legacy_OFDMTAB(0x14, 1) +#define B43legacy_OFDMTAB_AGC3_R1 B43legacy_OFDMTAB(0x15, 0) +#define B43legacy_OFDMTAB_WRSSI_R1 B43legacy_OFDMTAB(0x15, 4) +#define B43legacy_OFDMTAB_TSSI B43legacy_OFDMTAB(0x15, 0) +#define B43legacy_OFDMTAB_DACRFPABB B43legacy_OFDMTAB(0x16, 0) +#define B43legacy_OFDMTAB_DACOFF B43legacy_OFDMTAB(0x17, 0) +#define B43legacy_OFDMTAB_DCBIAS B43legacy_OFDMTAB(0x18, 0) + +void b43legacy_put_attenuation_into_ranges(int *_bbatt, int *_rfatt); + +/* OFDM (A) PHY Registers */ +#define B43legacy_PHY_VERSION_OFDM B43legacy_PHY_OFDM(0x00) /* Versioning register for A-PHY */ +#define B43legacy_PHY_BBANDCFG B43legacy_PHY_OFDM(0x01) /* Baseband config */ +#define B43legacy_PHY_BBANDCFG_RXANT 0x180 /* RX Antenna selection */ +#define B43legacy_PHY_BBANDCFG_RXANT_SHIFT 7 +#define B43legacy_PHY_PWRDOWN B43legacy_PHY_OFDM(0x03) /* Powerdown */ +#define B43legacy_PHY_CRSTHRES1 B43legacy_PHY_OFDM(0x06) /* CRS Threshold 1 */ +#define B43legacy_PHY_LNAHPFCTL B43legacy_PHY_OFDM(0x1C) /* LNA/HPF control */ +#define B43legacy_PHY_ADIVRELATED B43legacy_PHY_OFDM(0x27) /* FIXME rename */ +#define B43legacy_PHY_CRS0 B43legacy_PHY_OFDM(0x29) +#define B43legacy_PHY_ANTDWELL B43legacy_PHY_OFDM(0x2B) /* Antenna dwell */ +#define B43legacy_PHY_ANTDWELL_AUTODIV1 0x0100 /* Automatic RX diversity start antenna */ +#define B43legacy_PHY_ENCORE B43legacy_PHY_OFDM(0x49) /* "Encore" (RangeMax / BroadRange) */ +#define B43legacy_PHY_ENCORE_EN 0x0200 /* Encore enable */ +#define B43legacy_PHY_LMS B43legacy_PHY_OFDM(0x55) +#define B43legacy_PHY_OFDM61 B43legacy_PHY_OFDM(0x61) /* FIXME rename */ +#define B43legacy_PHY_OFDM61_10 0x0010 /* FIXME rename */ +#define B43legacy_PHY_IQBAL B43legacy_PHY_OFDM(0x69) /* I/Q balance */ +#define B43legacy_PHY_OTABLECTL B43legacy_PHY_OFDM(0x72) /* OFDM table control (see below) */ +#define B43legacy_PHY_OTABLEOFF 0x03FF /* OFDM table offset (see below) */ +#define B43legacy_PHY_OTABLENR 0xFC00 /* OFDM table number (see below) */ +#define B43legacy_PHY_OTABLENR_SHIFT 10 +#define B43legacy_PHY_OTABLEI B43legacy_PHY_OFDM(0x73) /* OFDM table data I */ +#define B43legacy_PHY_OTABLEQ B43legacy_PHY_OFDM(0x74) /* OFDM table data Q */ +#define B43legacy_PHY_HPWR_TSSICTL B43legacy_PHY_OFDM(0x78) /* Hardware power TSSI control */ +#define B43legacy_PHY_NRSSITHRES B43legacy_PHY_OFDM(0x8A) /* NRSSI threshold */ +#define B43legacy_PHY_ANTWRSETT B43legacy_PHY_OFDM(0x8C) /* Antenna WR settle */ +#define B43legacy_PHY_ANTWRSETT_ARXDIV 0x2000 /* Automatic RX diversity enabled */ +#define B43legacy_PHY_CLIPPWRDOWNT B43legacy_PHY_OFDM(0x93) /* Clip powerdown threshold */ +#define B43legacy_PHY_OFDM9B B43legacy_PHY_OFDM(0x9B) /* FIXME rename */ +#define B43legacy_PHY_N1P1GAIN B43legacy_PHY_OFDM(0xA0) +#define B43legacy_PHY_P1P2GAIN B43legacy_PHY_OFDM(0xA1) +#define B43legacy_PHY_N1N2GAIN B43legacy_PHY_OFDM(0xA2) +#define B43legacy_PHY_CLIPTHRES B43legacy_PHY_OFDM(0xA3) +#define B43legacy_PHY_CLIPN1P2THRES B43legacy_PHY_OFDM(0xA4) +#define B43legacy_PHY_DIVSRCHIDX B43legacy_PHY_OFDM(0xA8) /* Divider search gain/index */ +#define B43legacy_PHY_CLIPP2THRES B43legacy_PHY_OFDM(0xA9) +#define B43legacy_PHY_CLIPP3THRES B43legacy_PHY_OFDM(0xAA) +#define B43legacy_PHY_DIVP1P2GAIN B43legacy_PHY_OFDM(0xAB) +#define B43legacy_PHY_DIVSRCHGAINBACK B43legacy_PHY_OFDM(0xAD) /* Divider search gain back */ +#define B43legacy_PHY_DIVSRCHGAINCHNG B43legacy_PHY_OFDM(0xAE) /* Divider search gain change */ +#define B43legacy_PHY_CRSTHRES1_R1 B43legacy_PHY_OFDM(0xC0) /* CRS Threshold 1 (rev 1 only) */ +#define B43legacy_PHY_CRSTHRES2_R1 B43legacy_PHY_OFDM(0xC1) /* CRS Threshold 2 (rev 1 only) */ +#define B43legacy_PHY_TSSIP_LTBASE B43legacy_PHY_OFDM(0x380) /* TSSI power lookup table base */ +#define B43legacy_PHY_DC_LTBASE B43legacy_PHY_OFDM(0x3A0) /* DC lookup table base */ +#define B43legacy_PHY_GAIN_LTBASE B43legacy_PHY_OFDM(0x3C0) /* Gain lookup table base */ + +void b43legacy_put_attenuation_into_ranges(int *_bbatt, int *_rfatt); + +/* Masks for the different PHY versioning registers. */ +#define B43legacy_PHYVER_ANALOG 0xF000 +#define B43legacy_PHYVER_ANALOG_SHIFT 12 +#define B43legacy_PHYVER_TYPE 0x0F00 +#define B43legacy_PHYVER_TYPE_SHIFT 8 +#define B43legacy_PHYVER_VERSION 0x00FF + +struct b43legacy_wldev; + +void b43legacy_phy_lock(struct b43legacy_wldev *dev); +void b43legacy_phy_unlock(struct b43legacy_wldev *dev); + +/* Card uses the loopback gain stuff */ +#define has_loopback_gain(phy) \ + (((phy)->rev > 1) || ((phy)->gmode)) + +u16 b43legacy_phy_read(struct b43legacy_wldev *dev, u16 offset); +void b43legacy_phy_write(struct b43legacy_wldev *dev, u16 offset, u16 val); + +int b43legacy_phy_init_tssi2dbm_table(struct b43legacy_wldev *dev); +int b43legacy_phy_init(struct b43legacy_wldev *dev); + +void b43legacy_set_rx_antenna(struct b43legacy_wldev *dev, int antenna); + +void b43legacy_phy_set_antenna_diversity(struct b43legacy_wldev *dev); +void b43legacy_phy_calibrate(struct b43legacy_wldev *dev); +int b43legacy_phy_connect(struct b43legacy_wldev *dev, int connect); + +void b43legacy_phy_lo_b_measure(struct b43legacy_wldev *dev); +void b43legacy_phy_lo_g_measure(struct b43legacy_wldev *dev); +void b43legacy_phy_xmitpower(struct b43legacy_wldev *dev); + +/* Adjust the LocalOscillator to the saved values. + * "fixed" is only set to 1 once in initialization. Set to 0 otherwise. + */ +void b43legacy_phy_lo_adjust(struct b43legacy_wldev *dev, int fixed); +void b43legacy_phy_lo_mark_all_unused(struct b43legacy_wldev *dev); + +void b43legacy_phy_set_baseband_attenuation(struct b43legacy_wldev *dev, + u16 baseband_attenuation); + +void b43legacy_power_saving_ctl_bits(struct b43legacy_wldev *dev, + int bit25, int bit26); + +#endif /* B43legacy_PHY_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/pio.c b/drivers/net/wireless/broadcom/b43legacy/pio.c new file mode 100644 index 000000000..aac413d0f --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/pio.c @@ -0,0 +1,681 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + PIO Transmission + + Copyright (c) 2005 Michael Buesch <m@bues.ch> + + +*/ + +#include "b43legacy.h" +#include "pio.h" +#include "main.h" +#include "xmit.h" + +#include <linux/delay.h> +#include <linux/slab.h> + + +static void tx_start(struct b43legacy_pioqueue *queue) +{ + b43legacy_pio_write(queue, B43legacy_PIO_TXCTL, + B43legacy_PIO_TXCTL_INIT); +} + +static void tx_octet(struct b43legacy_pioqueue *queue, + u8 octet) +{ + if (queue->need_workarounds) { + b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, octet); + b43legacy_pio_write(queue, B43legacy_PIO_TXCTL, + B43legacy_PIO_TXCTL_WRITELO); + } else { + b43legacy_pio_write(queue, B43legacy_PIO_TXCTL, + B43legacy_PIO_TXCTL_WRITELO); + b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, octet); + } +} + +static u16 tx_get_next_word(const u8 *txhdr, + const u8 *packet, + size_t txhdr_size, + unsigned int *pos) +{ + const u8 *source; + unsigned int i = *pos; + u16 ret; + + if (i < txhdr_size) + source = txhdr; + else { + source = packet; + i -= txhdr_size; + } + ret = le16_to_cpu(*((__le16 *)(source + i))); + *pos += 2; + + return ret; +} + +static void tx_data(struct b43legacy_pioqueue *queue, + u8 *txhdr, + const u8 *packet, + unsigned int octets) +{ + u16 data; + unsigned int i = 0; + + if (queue->need_workarounds) { + data = tx_get_next_word(txhdr, packet, + sizeof(struct b43legacy_txhdr_fw3), &i); + b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, data); + } + b43legacy_pio_write(queue, B43legacy_PIO_TXCTL, + B43legacy_PIO_TXCTL_WRITELO | + B43legacy_PIO_TXCTL_WRITEHI); + while (i < octets - 1) { + data = tx_get_next_word(txhdr, packet, + sizeof(struct b43legacy_txhdr_fw3), &i); + b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, data); + } + if (octets % 2) + tx_octet(queue, packet[octets - + sizeof(struct b43legacy_txhdr_fw3) - 1]); +} + +static void tx_complete(struct b43legacy_pioqueue *queue, + struct sk_buff *skb) +{ + if (queue->need_workarounds) { + b43legacy_pio_write(queue, B43legacy_PIO_TXDATA, + skb->data[skb->len - 1]); + b43legacy_pio_write(queue, B43legacy_PIO_TXCTL, + B43legacy_PIO_TXCTL_WRITELO | + B43legacy_PIO_TXCTL_COMPLETE); + } else + b43legacy_pio_write(queue, B43legacy_PIO_TXCTL, + B43legacy_PIO_TXCTL_COMPLETE); +} + +static u16 generate_cookie(struct b43legacy_pioqueue *queue, + struct b43legacy_pio_txpacket *packet) +{ + u16 cookie = 0x0000; + int packetindex; + + /* We use the upper 4 bits for the PIO + * controller ID and the lower 12 bits + * for the packet index (in the cache). + */ + switch (queue->mmio_base) { + case B43legacy_MMIO_PIO1_BASE: + break; + case B43legacy_MMIO_PIO2_BASE: + cookie = 0x1000; + break; + case B43legacy_MMIO_PIO3_BASE: + cookie = 0x2000; + break; + case B43legacy_MMIO_PIO4_BASE: + cookie = 0x3000; + break; + default: + B43legacy_WARN_ON(1); + } + packetindex = pio_txpacket_getindex(packet); + B43legacy_WARN_ON(!(((u16)packetindex & 0xF000) == 0x0000)); + cookie |= (u16)packetindex; + + return cookie; +} + +static +struct b43legacy_pioqueue *parse_cookie(struct b43legacy_wldev *dev, + u16 cookie, + struct b43legacy_pio_txpacket **packet) +{ + struct b43legacy_pio *pio = &dev->pio; + struct b43legacy_pioqueue *queue = NULL; + int packetindex; + + switch (cookie & 0xF000) { + case 0x0000: + queue = pio->queue0; + break; + case 0x1000: + queue = pio->queue1; + break; + case 0x2000: + queue = pio->queue2; + break; + case 0x3000: + queue = pio->queue3; + break; + default: + B43legacy_WARN_ON(1); + } + packetindex = (cookie & 0x0FFF); + B43legacy_WARN_ON(!(packetindex >= 0 && packetindex + < B43legacy_PIO_MAXTXPACKETS)); + *packet = &(queue->tx_packets_cache[packetindex]); + + return queue; +} + +union txhdr_union { + struct b43legacy_txhdr_fw3 txhdr_fw3; +}; + +static int pio_tx_write_fragment(struct b43legacy_pioqueue *queue, + struct sk_buff *skb, + struct b43legacy_pio_txpacket *packet, + size_t txhdr_size) +{ + union txhdr_union txhdr_data; + u8 *txhdr = NULL; + unsigned int octets; + int err; + + txhdr = (u8 *)(&txhdr_data.txhdr_fw3); + + B43legacy_WARN_ON(skb_shinfo(skb)->nr_frags != 0); + err = b43legacy_generate_txhdr(queue->dev, + txhdr, skb->data, skb->len, + IEEE80211_SKB_CB(skb), + generate_cookie(queue, packet)); + if (err) + return err; + + tx_start(queue); + octets = skb->len + txhdr_size; + if (queue->need_workarounds) + octets--; + tx_data(queue, txhdr, (u8 *)skb->data, octets); + tx_complete(queue, skb); + + return 0; +} + +static void free_txpacket(struct b43legacy_pio_txpacket *packet, + int irq_context) +{ + struct b43legacy_pioqueue *queue = packet->queue; + + if (packet->skb) { + if (irq_context) + dev_kfree_skb_irq(packet->skb); + else + dev_kfree_skb(packet->skb); + } + list_move(&packet->list, &queue->txfree); + queue->nr_txfree++; +} + +static int pio_tx_packet(struct b43legacy_pio_txpacket *packet) +{ + struct b43legacy_pioqueue *queue = packet->queue; + struct sk_buff *skb = packet->skb; + u16 octets; + int err; + + octets = (u16)skb->len + sizeof(struct b43legacy_txhdr_fw3); + if (queue->tx_devq_size < octets) { + b43legacywarn(queue->dev->wl, "PIO queue too small. " + "Dropping packet.\n"); + /* Drop it silently (return success) */ + free_txpacket(packet, 1); + return 0; + } + B43legacy_WARN_ON(queue->tx_devq_packets > + B43legacy_PIO_MAXTXDEVQPACKETS); + B43legacy_WARN_ON(queue->tx_devq_used > queue->tx_devq_size); + /* Check if there is sufficient free space on the device + * TX queue. If not, return and let the TX tasklet + * retry later. + */ + if (queue->tx_devq_packets == B43legacy_PIO_MAXTXDEVQPACKETS) + return -EBUSY; + if (queue->tx_devq_used + octets > queue->tx_devq_size) + return -EBUSY; + /* Now poke the device. */ + err = pio_tx_write_fragment(queue, skb, packet, + sizeof(struct b43legacy_txhdr_fw3)); + if (unlikely(err == -ENOKEY)) { + /* Drop this packet, as we don't have the encryption key + * anymore and must not transmit it unencrypted. */ + free_txpacket(packet, 1); + return 0; + } + + /* Account for the packet size. + * (We must not overflow the device TX queue) + */ + queue->tx_devq_packets++; + queue->tx_devq_used += octets; + + /* Transmission started, everything ok, move the + * packet to the txrunning list. + */ + list_move_tail(&packet->list, &queue->txrunning); + + return 0; +} + +static void tx_tasklet(struct tasklet_struct *t) +{ + struct b43legacy_pioqueue *queue = from_tasklet(queue, t, txtask); + struct b43legacy_wldev *dev = queue->dev; + unsigned long flags; + struct b43legacy_pio_txpacket *packet, *tmp_packet; + int err; + u16 txctl; + + spin_lock_irqsave(&dev->wl->irq_lock, flags); + if (queue->tx_frozen) + goto out_unlock; + txctl = b43legacy_pio_read(queue, B43legacy_PIO_TXCTL); + if (txctl & B43legacy_PIO_TXCTL_SUSPEND) + goto out_unlock; + + list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list) { + /* Try to transmit the packet. This can fail, if + * the device queue is full. In case of failure, the + * packet is left in the txqueue. + * If transmission succeed, the packet is moved to txrunning. + * If it is impossible to transmit the packet, it + * is dropped. + */ + err = pio_tx_packet(packet); + if (err) + break; + } +out_unlock: + spin_unlock_irqrestore(&dev->wl->irq_lock, flags); +} + +static void setup_txqueues(struct b43legacy_pioqueue *queue) +{ + struct b43legacy_pio_txpacket *packet; + int i; + + queue->nr_txfree = B43legacy_PIO_MAXTXPACKETS; + for (i = 0; i < B43legacy_PIO_MAXTXPACKETS; i++) { + packet = &(queue->tx_packets_cache[i]); + + packet->queue = queue; + INIT_LIST_HEAD(&packet->list); + + list_add(&packet->list, &queue->txfree); + } +} + +static +struct b43legacy_pioqueue *b43legacy_setup_pioqueue(struct b43legacy_wldev *dev, + u16 pio_mmio_base) +{ + struct b43legacy_pioqueue *queue; + u32 value; + u16 qsize; + + queue = kzalloc(sizeof(*queue), GFP_KERNEL); + if (!queue) + goto out; + + queue->dev = dev; + queue->mmio_base = pio_mmio_base; + queue->need_workarounds = (dev->dev->id.revision < 3); + + INIT_LIST_HEAD(&queue->txfree); + INIT_LIST_HEAD(&queue->txqueue); + INIT_LIST_HEAD(&queue->txrunning); + tasklet_setup(&queue->txtask, tx_tasklet); + + value = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + value &= ~B43legacy_MACCTL_BE; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, value); + + qsize = b43legacy_read16(dev, queue->mmio_base + + B43legacy_PIO_TXQBUFSIZE); + if (qsize == 0) { + b43legacyerr(dev->wl, "This card does not support PIO " + "operation mode. Please use DMA mode " + "(module parameter pio=0).\n"); + goto err_freequeue; + } + if (qsize <= B43legacy_PIO_TXQADJUST) { + b43legacyerr(dev->wl, "PIO tx device-queue too small (%u)\n", + qsize); + goto err_freequeue; + } + qsize -= B43legacy_PIO_TXQADJUST; + queue->tx_devq_size = qsize; + + setup_txqueues(queue); + +out: + return queue; + +err_freequeue: + kfree(queue); + queue = NULL; + goto out; +} + +static void cancel_transfers(struct b43legacy_pioqueue *queue) +{ + struct b43legacy_pio_txpacket *packet, *tmp_packet; + + tasklet_kill(&queue->txtask); + + list_for_each_entry_safe(packet, tmp_packet, &queue->txrunning, list) + free_txpacket(packet, 0); + list_for_each_entry_safe(packet, tmp_packet, &queue->txqueue, list) + free_txpacket(packet, 0); +} + +static void b43legacy_destroy_pioqueue(struct b43legacy_pioqueue *queue) +{ + if (!queue) + return; + + cancel_transfers(queue); + kfree(queue); +} + +void b43legacy_pio_free(struct b43legacy_wldev *dev) +{ + struct b43legacy_pio *pio; + + if (!b43legacy_using_pio(dev)) + return; + pio = &dev->pio; + + b43legacy_destroy_pioqueue(pio->queue3); + pio->queue3 = NULL; + b43legacy_destroy_pioqueue(pio->queue2); + pio->queue2 = NULL; + b43legacy_destroy_pioqueue(pio->queue1); + pio->queue1 = NULL; + b43legacy_destroy_pioqueue(pio->queue0); + pio->queue0 = NULL; +} + +int b43legacy_pio_init(struct b43legacy_wldev *dev) +{ + struct b43legacy_pio *pio = &dev->pio; + struct b43legacy_pioqueue *queue; + int err = -ENOMEM; + + queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO1_BASE); + if (!queue) + goto out; + pio->queue0 = queue; + + queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO2_BASE); + if (!queue) + goto err_destroy0; + pio->queue1 = queue; + + queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO3_BASE); + if (!queue) + goto err_destroy1; + pio->queue2 = queue; + + queue = b43legacy_setup_pioqueue(dev, B43legacy_MMIO_PIO4_BASE); + if (!queue) + goto err_destroy2; + pio->queue3 = queue; + + if (dev->dev->id.revision < 3) + dev->irq_mask |= B43legacy_IRQ_PIO_WORKAROUND; + + b43legacydbg(dev->wl, "PIO initialized\n"); + err = 0; +out: + return err; + +err_destroy2: + b43legacy_destroy_pioqueue(pio->queue2); + pio->queue2 = NULL; +err_destroy1: + b43legacy_destroy_pioqueue(pio->queue1); + pio->queue1 = NULL; +err_destroy0: + b43legacy_destroy_pioqueue(pio->queue0); + pio->queue0 = NULL; + goto out; +} + +int b43legacy_pio_tx(struct b43legacy_wldev *dev, + struct sk_buff *skb) +{ + struct b43legacy_pioqueue *queue = dev->pio.queue1; + struct b43legacy_pio_txpacket *packet; + + B43legacy_WARN_ON(queue->tx_suspended); + B43legacy_WARN_ON(list_empty(&queue->txfree)); + + packet = list_entry(queue->txfree.next, struct b43legacy_pio_txpacket, + list); + packet->skb = skb; + + list_move_tail(&packet->list, &queue->txqueue); + queue->nr_txfree--; + B43legacy_WARN_ON(queue->nr_txfree >= B43legacy_PIO_MAXTXPACKETS); + + tasklet_schedule(&queue->txtask); + + return 0; +} + +void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status) +{ + struct b43legacy_pioqueue *queue; + struct b43legacy_pio_txpacket *packet; + struct ieee80211_tx_info *info; + int retry_limit; + + queue = parse_cookie(dev, status->cookie, &packet); + B43legacy_WARN_ON(!queue); + + if (!packet->skb) + return; + + queue->tx_devq_packets--; + queue->tx_devq_used -= (packet->skb->len + + sizeof(struct b43legacy_txhdr_fw3)); + + info = IEEE80211_SKB_CB(packet->skb); + + /* preserve the confiured retry limit before clearing the status + * The xmit function has overwritten the rc's value with the actual + * retry limit done by the hardware */ + retry_limit = info->status.rates[0].count; + ieee80211_tx_info_clear_status(info); + + if (status->acked) + info->flags |= IEEE80211_TX_STAT_ACK; + + if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) { + /* + * If the short retries (RTS, not data frame) have exceeded + * the limit, the hw will not have tried the selected rate, + * but will have used the fallback rate instead. + * Don't let the rate control count attempts for the selected + * rate in this case, otherwise the statistics will be off. + */ + info->status.rates[0].count = 0; + info->status.rates[1].count = status->frame_count; + } else { + if (status->frame_count > retry_limit) { + info->status.rates[0].count = retry_limit; + info->status.rates[1].count = status->frame_count - + retry_limit; + + } else { + info->status.rates[0].count = status->frame_count; + info->status.rates[1].idx = -1; + } + } + ieee80211_tx_status_irqsafe(dev->wl->hw, packet->skb); + packet->skb = NULL; + + free_txpacket(packet, 1); + /* If there are packets on the txqueue, poke the tasklet + * to transmit them. + */ + if (!list_empty(&queue->txqueue)) + tasklet_schedule(&queue->txtask); +} + +static void pio_rx_error(struct b43legacy_pioqueue *queue, + int clear_buffers, + const char *error) +{ + int i; + + b43legacyerr(queue->dev->wl, "PIO RX error: %s\n", error); + b43legacy_pio_write(queue, B43legacy_PIO_RXCTL, + B43legacy_PIO_RXCTL_READY); + if (clear_buffers) { + B43legacy_WARN_ON(queue->mmio_base != B43legacy_MMIO_PIO1_BASE); + for (i = 0; i < 15; i++) { + /* Dummy read. */ + b43legacy_pio_read(queue, B43legacy_PIO_RXDATA); + } + } +} + +void b43legacy_pio_rx(struct b43legacy_pioqueue *queue) +{ + __le16 preamble[21] = { 0 }; + struct b43legacy_rxhdr_fw3 *rxhdr; + u16 tmp; + u16 len; + u16 macstat; + int i; + int preamble_readwords; + struct sk_buff *skb; + + tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXCTL); + if (!(tmp & B43legacy_PIO_RXCTL_DATAAVAILABLE)) + return; + b43legacy_pio_write(queue, B43legacy_PIO_RXCTL, + B43legacy_PIO_RXCTL_DATAAVAILABLE); + + for (i = 0; i < 10; i++) { + tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXCTL); + if (tmp & B43legacy_PIO_RXCTL_READY) + goto data_ready; + udelay(10); + } + b43legacydbg(queue->dev->wl, "PIO RX timed out\n"); + return; +data_ready: + + len = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA); + if (unlikely(len > 0x700)) { + pio_rx_error(queue, 0, "len > 0x700"); + return; + } + if (unlikely(len == 0 && queue->mmio_base != + B43legacy_MMIO_PIO4_BASE)) { + pio_rx_error(queue, 0, "len == 0"); + return; + } + preamble[0] = cpu_to_le16(len); + if (queue->mmio_base == B43legacy_MMIO_PIO4_BASE) + preamble_readwords = 14 / sizeof(u16); + else + preamble_readwords = 18 / sizeof(u16); + for (i = 0; i < preamble_readwords; i++) { + tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA); + preamble[i + 1] = cpu_to_le16(tmp); + } + rxhdr = (struct b43legacy_rxhdr_fw3 *)preamble; + macstat = le16_to_cpu(rxhdr->mac_status); + if (macstat & B43legacy_RX_MAC_FCSERR) { + pio_rx_error(queue, + (queue->mmio_base == B43legacy_MMIO_PIO1_BASE), + "Frame FCS error"); + return; + } + if (queue->mmio_base == B43legacy_MMIO_PIO4_BASE) { + /* We received an xmit status. */ + struct b43legacy_hwtxstatus *hw; + + hw = (struct b43legacy_hwtxstatus *)(preamble + 1); + b43legacy_handle_hwtxstatus(queue->dev, hw); + + return; + } + + skb = dev_alloc_skb(len); + if (unlikely(!skb)) { + pio_rx_error(queue, 1, "OOM"); + return; + } + skb_put(skb, len); + for (i = 0; i < len - 1; i += 2) { + tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA); + *((__le16 *)(skb->data + i)) = cpu_to_le16(tmp); + } + if (len % 2) { + tmp = b43legacy_pio_read(queue, B43legacy_PIO_RXDATA); + skb->data[len - 1] = (tmp & 0x00FF); + } + b43legacy_rx(queue->dev, skb, rxhdr); +} + +void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue) +{ + b43legacy_power_saving_ctl_bits(queue->dev, -1, 1); + b43legacy_pio_write(queue, B43legacy_PIO_TXCTL, + b43legacy_pio_read(queue, B43legacy_PIO_TXCTL) + | B43legacy_PIO_TXCTL_SUSPEND); +} + +void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue) +{ + b43legacy_pio_write(queue, B43legacy_PIO_TXCTL, + b43legacy_pio_read(queue, B43legacy_PIO_TXCTL) + & ~B43legacy_PIO_TXCTL_SUSPEND); + b43legacy_power_saving_ctl_bits(queue->dev, -1, -1); + tasklet_schedule(&queue->txtask); +} + +void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev) +{ + struct b43legacy_pio *pio; + + B43legacy_WARN_ON(!b43legacy_using_pio(dev)); + pio = &dev->pio; + pio->queue0->tx_frozen = 1; + pio->queue1->tx_frozen = 1; + pio->queue2->tx_frozen = 1; + pio->queue3->tx_frozen = 1; +} + +void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev) +{ + struct b43legacy_pio *pio; + + B43legacy_WARN_ON(!b43legacy_using_pio(dev)); + pio = &dev->pio; + pio->queue0->tx_frozen = 0; + pio->queue1->tx_frozen = 0; + pio->queue2->tx_frozen = 0; + pio->queue3->tx_frozen = 0; + if (!list_empty(&pio->queue0->txqueue)) + tasklet_schedule(&pio->queue0->txtask); + if (!list_empty(&pio->queue1->txqueue)) + tasklet_schedule(&pio->queue1->txtask); + if (!list_empty(&pio->queue2->txqueue)) + tasklet_schedule(&pio->queue2->txtask); + if (!list_empty(&pio->queue3->txqueue)) + tasklet_schedule(&pio->queue3->txtask); +} diff --git a/drivers/net/wireless/broadcom/b43legacy/pio.h b/drivers/net/wireless/broadcom/b43legacy/pio.h new file mode 100644 index 000000000..08cd02282 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/pio.h @@ -0,0 +1,158 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_PIO_H_ +#define B43legacy_PIO_H_ + +#include "b43legacy.h" + +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/skbuff.h> + + +#define B43legacy_PIO_TXCTL 0x00 +#define B43legacy_PIO_TXDATA 0x02 +#define B43legacy_PIO_TXQBUFSIZE 0x04 +#define B43legacy_PIO_RXCTL 0x08 +#define B43legacy_PIO_RXDATA 0x0A + +#define B43legacy_PIO_TXCTL_WRITELO (1 << 0) +#define B43legacy_PIO_TXCTL_WRITEHI (1 << 1) +#define B43legacy_PIO_TXCTL_COMPLETE (1 << 2) +#define B43legacy_PIO_TXCTL_INIT (1 << 3) +#define B43legacy_PIO_TXCTL_SUSPEND (1 << 7) + +#define B43legacy_PIO_RXCTL_DATAAVAILABLE (1 << 0) +#define B43legacy_PIO_RXCTL_READY (1 << 1) + +/* PIO constants */ +#define B43legacy_PIO_MAXTXDEVQPACKETS 31 +#define B43legacy_PIO_TXQADJUST 80 + +/* PIO tuning knobs */ +#define B43legacy_PIO_MAXTXPACKETS 256 + + + +#ifdef CONFIG_B43LEGACY_PIO + + +struct b43legacy_pioqueue; +struct b43legacy_xmitstatus; + +struct b43legacy_pio_txpacket { + struct b43legacy_pioqueue *queue; + struct sk_buff *skb; + struct list_head list; +}; + +#define pio_txpacket_getindex(packet) ((int)((packet) - \ + (packet)->queue->tx_packets_cache)) + +struct b43legacy_pioqueue { + struct b43legacy_wldev *dev; + u16 mmio_base; + + bool tx_suspended; + bool tx_frozen; + bool need_workarounds; /* Workarounds needed for core.rev < 3 */ + + /* Adjusted size of the device internal TX buffer. */ + u16 tx_devq_size; + /* Used octets of the device internal TX buffer. */ + u16 tx_devq_used; + /* Used packet slots in the device internal TX buffer. */ + u8 tx_devq_packets; + /* Packets from the txfree list can + * be taken on incoming TX requests. + */ + struct list_head txfree; + unsigned int nr_txfree; + /* Packets on the txqueue are queued, + * but not completely written to the chip, yet. + */ + struct list_head txqueue; + /* Packets on the txrunning queue are completely + * posted to the device. We are waiting for the txstatus. + */ + struct list_head txrunning; + struct tasklet_struct txtask; + struct b43legacy_pio_txpacket + tx_packets_cache[B43legacy_PIO_MAXTXPACKETS]; +}; + +static inline +u16 b43legacy_pio_read(struct b43legacy_pioqueue *queue, + u16 offset) +{ + return b43legacy_read16(queue->dev, queue->mmio_base + offset); +} + +static inline +void b43legacy_pio_write(struct b43legacy_pioqueue *queue, + u16 offset, u16 value) +{ + b43legacy_write16(queue->dev, queue->mmio_base + offset, value); +} + + +int b43legacy_pio_init(struct b43legacy_wldev *dev); +void b43legacy_pio_free(struct b43legacy_wldev *dev); + +int b43legacy_pio_tx(struct b43legacy_wldev *dev, + struct sk_buff *skb); +void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status); +void b43legacy_pio_rx(struct b43legacy_pioqueue *queue); + +/* Suspend TX queue in hardware. */ +void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue); +void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue); +/* Suspend (freeze) the TX tasklet (software level). */ +void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev); +void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev); + +#else /* CONFIG_B43LEGACY_PIO */ + +static inline +int b43legacy_pio_init(struct b43legacy_wldev *dev) +{ + return 0; +} +static inline +void b43legacy_pio_free(struct b43legacy_wldev *dev) +{ +} +static inline +int b43legacy_pio_tx(struct b43legacy_wldev *dev, + struct sk_buff *skb) +{ + return 0; +} +static inline +void b43legacy_pio_handle_txstatus(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status) +{ +} +static inline +void b43legacy_pio_rx(struct b43legacy_pioqueue *queue) +{ +} +static inline +void b43legacy_pio_tx_suspend(struct b43legacy_pioqueue *queue) +{ +} +static inline +void b43legacy_pio_tx_resume(struct b43legacy_pioqueue *queue) +{ +} +static inline +void b43legacy_pio_freeze_txqueues(struct b43legacy_wldev *dev) +{ +} +static inline +void b43legacy_pio_thaw_txqueues(struct b43legacy_wldev *dev) +{ +} + +#endif /* CONFIG_B43LEGACY_PIO */ +#endif /* B43legacy_PIO_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/radio.c b/drivers/net/wireless/broadcom/b43legacy/radio.c new file mode 100644 index 000000000..fdf78c10a --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/radio.c @@ -0,0 +1,2126 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, + Stefano Brivio <stefano.brivio@polimi.it> + Michael Buesch <m@bues.ch> + Danny van Dyk <kugelfang@gentoo.org> + Andreas Jaggi <andreas.jaggi@waterwave.ch> + Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net> + + Some parts of the code in this file are derived from the ipw2200 + driver Copyright(c) 2003 - 2004 Intel Corporation. + + +*/ + +#include <linux/delay.h> + +#include "b43legacy.h" +#include "main.h" +#include "phy.h" +#include "radio.h" +#include "ilt.h" + + +/* Table for b43legacy_radio_calibrationvalue() */ +static const u16 rcc_table[16] = { + 0x0002, 0x0003, 0x0001, 0x000F, + 0x0006, 0x0007, 0x0005, 0x000F, + 0x000A, 0x000B, 0x0009, 0x000F, + 0x000E, 0x000F, 0x000D, 0x000F, +}; + +/* Reverse the bits of a 4bit value. + * Example: 1101 is flipped 1011 + */ +static u16 flip_4bit(u16 value) +{ + u16 flipped = 0x0000; + + B43legacy_BUG_ON(!((value & ~0x000F) == 0x0000)); + + flipped |= (value & 0x0001) << 3; + flipped |= (value & 0x0002) << 1; + flipped |= (value & 0x0004) >> 1; + flipped |= (value & 0x0008) >> 3; + + return flipped; +} + +/* Get the freq, as it has to be written to the device. */ +static inline +u16 channel2freq_bg(u8 channel) +{ + /* Frequencies are given as frequencies_bg[index] + 2.4GHz + * Starting with channel 1 + */ + static const u16 frequencies_bg[14] = { + 12, 17, 22, 27, + 32, 37, 42, 47, + 52, 57, 62, 67, + 72, 84, + }; + + if (unlikely(channel < 1 || channel > 14)) { + printk(KERN_INFO "b43legacy: Channel %d is out of range\n", + channel); + dump_stack(); + return 2412; + } + + return frequencies_bg[channel - 1]; +} + +void b43legacy_radio_lock(struct b43legacy_wldev *dev) +{ + u32 status; + + status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + B43legacy_WARN_ON(status & B43legacy_MACCTL_RADIOLOCK); + status |= B43legacy_MACCTL_RADIOLOCK; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); + udelay(10); +} + +void b43legacy_radio_unlock(struct b43legacy_wldev *dev) +{ + u32 status; + + b43legacy_read16(dev, B43legacy_MMIO_PHY_VER); /* dummy read */ + status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL); + B43legacy_WARN_ON(!(status & B43legacy_MACCTL_RADIOLOCK)); + status &= ~B43legacy_MACCTL_RADIOLOCK; + b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status); +} + +u16 b43legacy_radio_read16(struct b43legacy_wldev *dev, u16 offset) +{ + struct b43legacy_phy *phy = &dev->phy; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + if (phy->radio_ver == 0x2053) { + if (offset < 0x70) + offset += 0x80; + else if (offset < 0x80) + offset += 0x70; + } else if (phy->radio_ver == 0x2050) + offset |= 0x80; + else + B43legacy_WARN_ON(1); + break; + case B43legacy_PHYTYPE_G: + offset |= 0x80; + break; + default: + B43legacy_BUG_ON(1); + } + + b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, offset); + return b43legacy_read16(dev, B43legacy_MMIO_RADIO_DATA_LOW); +} + +void b43legacy_radio_write16(struct b43legacy_wldev *dev, u16 offset, u16 val) +{ + b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, offset); + b43legacy_write16(dev, B43legacy_MMIO_RADIO_DATA_LOW, val); +} + +static void b43legacy_set_all_gains(struct b43legacy_wldev *dev, + s16 first, s16 second, s16 third) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 i; + u16 start = 0x08; + u16 end = 0x18; + u16 offset = 0x0400; + u16 tmp; + + if (phy->rev <= 1) { + offset = 0x5000; + start = 0x10; + end = 0x20; + } + + for (i = 0; i < 4; i++) + b43legacy_ilt_write(dev, offset + i, first); + + for (i = start; i < end; i++) + b43legacy_ilt_write(dev, offset + i, second); + + if (third != -1) { + tmp = ((u16)third << 14) | ((u16)third << 6); + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) & 0xBFBF) + | tmp); + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) & 0xBFBF) + | tmp); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) & 0xBFBF) + | tmp); + } + b43legacy_dummy_transmission(dev); +} + +static void b43legacy_set_original_gains(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 i; + u16 tmp; + u16 offset = 0x0400; + u16 start = 0x0008; + u16 end = 0x0018; + + if (phy->rev <= 1) { + offset = 0x5000; + start = 0x0010; + end = 0x0020; + } + + for (i = 0; i < 4; i++) { + tmp = (i & 0xFFFC); + tmp |= (i & 0x0001) << 1; + tmp |= (i & 0x0002) >> 1; + + b43legacy_ilt_write(dev, offset + i, tmp); + } + + for (i = start; i < end; i++) + b43legacy_ilt_write(dev, offset + i, i - start); + + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) & 0xBFBF) + | 0x4040); + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) & 0xBFBF) + | 0x4040); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) & 0xBFBF) + | 0x4000); + b43legacy_dummy_transmission(dev); +} + +/* Synthetic PU workaround */ +static void b43legacy_synth_pu_workaround(struct b43legacy_wldev *dev, + u8 channel) +{ + struct b43legacy_phy *phy = &dev->phy; + + might_sleep(); + + if (phy->radio_ver != 0x2050 || phy->radio_rev >= 6) + /* We do not need the workaround. */ + return; + + if (channel <= 10) + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL, + channel2freq_bg(channel + 4)); + else + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL, + channel2freq_bg(channel)); + msleep(1); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL, + channel2freq_bg(channel)); +} + +u8 b43legacy_radio_aci_detect(struct b43legacy_wldev *dev, u8 channel) +{ + struct b43legacy_phy *phy = &dev->phy; + u8 ret = 0; + u16 saved; + u16 rssi; + u16 temp; + int i; + int j = 0; + + saved = b43legacy_phy_read(dev, 0x0403); + b43legacy_radio_selectchannel(dev, channel, 0); + b43legacy_phy_write(dev, 0x0403, (saved & 0xFFF8) | 5); + if (phy->aci_hw_rssi) + rssi = b43legacy_phy_read(dev, 0x048A) & 0x3F; + else + rssi = saved & 0x3F; + /* clamp temp to signed 5bit */ + if (rssi > 32) + rssi -= 64; + for (i = 0; i < 100; i++) { + temp = (b43legacy_phy_read(dev, 0x047F) >> 8) & 0x3F; + if (temp > 32) + temp -= 64; + if (temp < rssi) + j++; + if (j >= 20) + ret = 1; + } + b43legacy_phy_write(dev, 0x0403, saved); + + return ret; +} + +u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u8 ret[13] = { 0 }; + unsigned int channel = phy->channel; + unsigned int i; + unsigned int j; + unsigned int start; + unsigned int end; + + if (!((phy->type == B43legacy_PHYTYPE_G) && (phy->rev > 0))) + return 0; + + b43legacy_phy_lock(dev); + b43legacy_radio_lock(dev); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) & 0xFFFC); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + & 0x7FFF); + b43legacy_set_all_gains(dev, 3, 8, 1); + + start = (channel > 5) ? channel - 5 : 1; + end = (channel + 5 < 14) ? channel + 5 : 13; + + for (i = start; i <= end; i++) { + if (abs(channel - i) > 2) + ret[i-1] = b43legacy_radio_aci_detect(dev, i); + } + b43legacy_radio_selectchannel(dev, channel, 0); + b43legacy_phy_write(dev, 0x0802, + (b43legacy_phy_read(dev, 0x0802) & 0xFFFC) + | 0x0003); + b43legacy_phy_write(dev, 0x0403, + b43legacy_phy_read(dev, 0x0403) & 0xFFF8); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + | 0x8000); + b43legacy_set_original_gains(dev); + for (i = 0; i < 13; i++) { + if (!ret[i]) + continue; + end = (i + 5 < 13) ? i + 5 : 13; + for (j = i; j < end; j++) + ret[j] = 1; + } + b43legacy_radio_unlock(dev); + b43legacy_phy_unlock(dev); + + return ret[channel - 1]; +} + +/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */ +void b43legacy_nrssi_hw_write(struct b43legacy_wldev *dev, u16 offset, s16 val) +{ + b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_CTRL, offset); + b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_DATA, (u16)val); +} + +/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */ +s16 b43legacy_nrssi_hw_read(struct b43legacy_wldev *dev, u16 offset) +{ + u16 val; + + b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_CTRL, offset); + val = b43legacy_phy_read(dev, B43legacy_PHY_NRSSILT_DATA); + + return (s16)val; +} + +/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */ +void b43legacy_nrssi_hw_update(struct b43legacy_wldev *dev, u16 val) +{ + u16 i; + s16 tmp; + + for (i = 0; i < 64; i++) { + tmp = b43legacy_nrssi_hw_read(dev, i); + tmp -= val; + tmp = clamp_val(tmp, -32, 31); + b43legacy_nrssi_hw_write(dev, i, tmp); + } +} + +/* https://bcm-specs.sipsolutions.net/NRSSILookupTable */ +void b43legacy_nrssi_mem_update(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + s16 i; + s16 delta; + s32 tmp; + + delta = 0x1F - phy->nrssi[0]; + for (i = 0; i < 64; i++) { + tmp = (i - delta) * phy->nrssislope; + tmp /= 0x10000; + tmp += 0x3A; + tmp = clamp_val(tmp, 0, 0x3F); + phy->nrssi_lt[i] = tmp; + } +} + +static void b43legacy_calc_nrssi_offset(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 backup[20] = { 0 }; + s16 v47F; + u16 i; + u16 saved = 0xFFFF; + + backup[0] = b43legacy_phy_read(dev, 0x0001); + backup[1] = b43legacy_phy_read(dev, 0x0811); + backup[2] = b43legacy_phy_read(dev, 0x0812); + backup[3] = b43legacy_phy_read(dev, 0x0814); + backup[4] = b43legacy_phy_read(dev, 0x0815); + backup[5] = b43legacy_phy_read(dev, 0x005A); + backup[6] = b43legacy_phy_read(dev, 0x0059); + backup[7] = b43legacy_phy_read(dev, 0x0058); + backup[8] = b43legacy_phy_read(dev, 0x000A); + backup[9] = b43legacy_phy_read(dev, 0x0003); + backup[10] = b43legacy_radio_read16(dev, 0x007A); + backup[11] = b43legacy_radio_read16(dev, 0x0043); + + b43legacy_phy_write(dev, 0x0429, + b43legacy_phy_read(dev, 0x0429) & 0x7FFF); + b43legacy_phy_write(dev, 0x0001, + (b43legacy_phy_read(dev, 0x0001) & 0x3FFF) + | 0x4000); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x000C); + b43legacy_phy_write(dev, 0x0812, + (b43legacy_phy_read(dev, 0x0812) & 0xFFF3) + | 0x0004); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) & ~(0x1 | 0x2)); + if (phy->rev >= 6) { + backup[12] = b43legacy_phy_read(dev, 0x002E); + backup[13] = b43legacy_phy_read(dev, 0x002F); + backup[14] = b43legacy_phy_read(dev, 0x080F); + backup[15] = b43legacy_phy_read(dev, 0x0810); + backup[16] = b43legacy_phy_read(dev, 0x0801); + backup[17] = b43legacy_phy_read(dev, 0x0060); + backup[18] = b43legacy_phy_read(dev, 0x0014); + backup[19] = b43legacy_phy_read(dev, 0x0478); + + b43legacy_phy_write(dev, 0x002E, 0); + b43legacy_phy_write(dev, 0x002F, 0); + b43legacy_phy_write(dev, 0x080F, 0); + b43legacy_phy_write(dev, 0x0810, 0); + b43legacy_phy_write(dev, 0x0478, + b43legacy_phy_read(dev, 0x0478) | 0x0100); + b43legacy_phy_write(dev, 0x0801, + b43legacy_phy_read(dev, 0x0801) | 0x0040); + b43legacy_phy_write(dev, 0x0060, + b43legacy_phy_read(dev, 0x0060) | 0x0040); + b43legacy_phy_write(dev, 0x0014, + b43legacy_phy_read(dev, 0x0014) | 0x0200); + } + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) | 0x0070); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) | 0x0080); + udelay(30); + + v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F); + if (v47F >= 0x20) + v47F -= 0x40; + if (v47F == 31) { + for (i = 7; i >= 4; i--) { + b43legacy_radio_write16(dev, 0x007B, i); + udelay(20); + v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) + & 0x003F); + if (v47F >= 0x20) + v47F -= 0x40; + if (v47F < 31 && saved == 0xFFFF) + saved = i; + } + if (saved == 0xFFFF) + saved = 4; + } else { + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x007F); + b43legacy_phy_write(dev, 0x0814, + b43legacy_phy_read(dev, 0x0814) | 0x0001); + b43legacy_phy_write(dev, 0x0815, + b43legacy_phy_read(dev, 0x0815) & 0xFFFE); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x000C); + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) | 0x000C); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) | 0x0030); + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) | 0x0030); + b43legacy_phy_write(dev, 0x005A, 0x0480); + b43legacy_phy_write(dev, 0x0059, 0x0810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + if (phy->analog == 0) + b43legacy_phy_write(dev, 0x0003, 0x0122); + else + b43legacy_phy_write(dev, 0x000A, + b43legacy_phy_read(dev, 0x000A) + | 0x2000); + b43legacy_phy_write(dev, 0x0814, + b43legacy_phy_read(dev, 0x0814) | 0x0004); + b43legacy_phy_write(dev, 0x0815, + b43legacy_phy_read(dev, 0x0815) & 0xFFFB); + b43legacy_phy_write(dev, 0x0003, + (b43legacy_phy_read(dev, 0x0003) & 0xFF9F) + | 0x0040); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x000F); + b43legacy_set_all_gains(dev, 3, 0, 1); + b43legacy_radio_write16(dev, 0x0043, + (b43legacy_radio_read16(dev, 0x0043) + & 0x00F0) | 0x000F); + udelay(30); + v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F); + if (v47F >= 0x20) + v47F -= 0x40; + if (v47F == -32) { + for (i = 0; i < 4; i++) { + b43legacy_radio_write16(dev, 0x007B, i); + udelay(20); + v47F = (s16)((b43legacy_phy_read(dev, 0x047F) >> + 8) & 0x003F); + if (v47F >= 0x20) + v47F -= 0x40; + if (v47F > -31 && saved == 0xFFFF) + saved = i; + } + if (saved == 0xFFFF) + saved = 3; + } else + saved = 0; + } + b43legacy_radio_write16(dev, 0x007B, saved); + + if (phy->rev >= 6) { + b43legacy_phy_write(dev, 0x002E, backup[12]); + b43legacy_phy_write(dev, 0x002F, backup[13]); + b43legacy_phy_write(dev, 0x080F, backup[14]); + b43legacy_phy_write(dev, 0x0810, backup[15]); + } + b43legacy_phy_write(dev, 0x0814, backup[3]); + b43legacy_phy_write(dev, 0x0815, backup[4]); + b43legacy_phy_write(dev, 0x005A, backup[5]); + b43legacy_phy_write(dev, 0x0059, backup[6]); + b43legacy_phy_write(dev, 0x0058, backup[7]); + b43legacy_phy_write(dev, 0x000A, backup[8]); + b43legacy_phy_write(dev, 0x0003, backup[9]); + b43legacy_radio_write16(dev, 0x0043, backup[11]); + b43legacy_radio_write16(dev, 0x007A, backup[10]); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) | 0x1 | 0x2); + b43legacy_phy_write(dev, 0x0429, + b43legacy_phy_read(dev, 0x0429) | 0x8000); + b43legacy_set_original_gains(dev); + if (phy->rev >= 6) { + b43legacy_phy_write(dev, 0x0801, backup[16]); + b43legacy_phy_write(dev, 0x0060, backup[17]); + b43legacy_phy_write(dev, 0x0014, backup[18]); + b43legacy_phy_write(dev, 0x0478, backup[19]); + } + b43legacy_phy_write(dev, 0x0001, backup[0]); + b43legacy_phy_write(dev, 0x0812, backup[2]); + b43legacy_phy_write(dev, 0x0811, backup[1]); +} + +void b43legacy_calc_nrssi_slope(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 backup[18] = { 0 }; + u16 tmp; + s16 nrssi0; + s16 nrssi1; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + backup[0] = b43legacy_radio_read16(dev, 0x007A); + backup[1] = b43legacy_radio_read16(dev, 0x0052); + backup[2] = b43legacy_radio_read16(dev, 0x0043); + backup[3] = b43legacy_phy_read(dev, 0x0030); + backup[4] = b43legacy_phy_read(dev, 0x0026); + backup[5] = b43legacy_phy_read(dev, 0x0015); + backup[6] = b43legacy_phy_read(dev, 0x002A); + backup[7] = b43legacy_phy_read(dev, 0x0020); + backup[8] = b43legacy_phy_read(dev, 0x005A); + backup[9] = b43legacy_phy_read(dev, 0x0059); + backup[10] = b43legacy_phy_read(dev, 0x0058); + backup[11] = b43legacy_read16(dev, 0x03E2); + backup[12] = b43legacy_read16(dev, 0x03E6); + backup[13] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT); + + tmp = b43legacy_radio_read16(dev, 0x007A); + tmp &= (phy->rev >= 5) ? 0x007F : 0x000F; + b43legacy_radio_write16(dev, 0x007A, tmp); + b43legacy_phy_write(dev, 0x0030, 0x00FF); + b43legacy_write16(dev, 0x03EC, 0x7F7F); + b43legacy_phy_write(dev, 0x0026, 0x0000); + b43legacy_phy_write(dev, 0x0015, + b43legacy_phy_read(dev, 0x0015) | 0x0020); + b43legacy_phy_write(dev, 0x002A, 0x08A3); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0080); + + nrssi0 = (s16)b43legacy_phy_read(dev, 0x0027); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x007F); + if (phy->analog >= 2) + b43legacy_write16(dev, 0x03E6, 0x0040); + else if (phy->analog == 0) + b43legacy_write16(dev, 0x03E6, 0x0122); + else + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) & 0x2000); + b43legacy_phy_write(dev, 0x0020, 0x3F3F); + b43legacy_phy_write(dev, 0x0015, 0xF330); + b43legacy_radio_write16(dev, 0x005A, 0x0060); + b43legacy_radio_write16(dev, 0x0043, + b43legacy_radio_read16(dev, 0x0043) + & 0x00F0); + b43legacy_phy_write(dev, 0x005A, 0x0480); + b43legacy_phy_write(dev, 0x0059, 0x0810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + udelay(20); + + nrssi1 = (s16)b43legacy_phy_read(dev, 0x0027); + b43legacy_phy_write(dev, 0x0030, backup[3]); + b43legacy_radio_write16(dev, 0x007A, backup[0]); + b43legacy_write16(dev, 0x03E2, backup[11]); + b43legacy_phy_write(dev, 0x0026, backup[4]); + b43legacy_phy_write(dev, 0x0015, backup[5]); + b43legacy_phy_write(dev, 0x002A, backup[6]); + b43legacy_synth_pu_workaround(dev, phy->channel); + if (phy->analog != 0) + b43legacy_write16(dev, 0x03F4, backup[13]); + + b43legacy_phy_write(dev, 0x0020, backup[7]); + b43legacy_phy_write(dev, 0x005A, backup[8]); + b43legacy_phy_write(dev, 0x0059, backup[9]); + b43legacy_phy_write(dev, 0x0058, backup[10]); + b43legacy_radio_write16(dev, 0x0052, backup[1]); + b43legacy_radio_write16(dev, 0x0043, backup[2]); + + if (nrssi0 == nrssi1) + phy->nrssislope = 0x00010000; + else + phy->nrssislope = 0x00400000 / (nrssi0 - nrssi1); + + if (nrssi0 <= -4) { + phy->nrssi[0] = nrssi0; + phy->nrssi[1] = nrssi1; + } + break; + case B43legacy_PHYTYPE_G: + if (phy->radio_rev >= 9) + return; + if (phy->radio_rev == 8) + b43legacy_calc_nrssi_offset(dev); + + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + & 0x7FFF); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) & 0xFFFC); + backup[7] = b43legacy_read16(dev, 0x03E2); + b43legacy_write16(dev, 0x03E2, + b43legacy_read16(dev, 0x03E2) | 0x8000); + backup[0] = b43legacy_radio_read16(dev, 0x007A); + backup[1] = b43legacy_radio_read16(dev, 0x0052); + backup[2] = b43legacy_radio_read16(dev, 0x0043); + backup[3] = b43legacy_phy_read(dev, 0x0015); + backup[4] = b43legacy_phy_read(dev, 0x005A); + backup[5] = b43legacy_phy_read(dev, 0x0059); + backup[6] = b43legacy_phy_read(dev, 0x0058); + backup[8] = b43legacy_read16(dev, 0x03E6); + backup[9] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT); + if (phy->rev >= 3) { + backup[10] = b43legacy_phy_read(dev, 0x002E); + backup[11] = b43legacy_phy_read(dev, 0x002F); + backup[12] = b43legacy_phy_read(dev, 0x080F); + backup[13] = b43legacy_phy_read(dev, + B43legacy_PHY_G_LO_CONTROL); + backup[14] = b43legacy_phy_read(dev, 0x0801); + backup[15] = b43legacy_phy_read(dev, 0x0060); + backup[16] = b43legacy_phy_read(dev, 0x0014); + backup[17] = b43legacy_phy_read(dev, 0x0478); + b43legacy_phy_write(dev, 0x002E, 0); + b43legacy_phy_write(dev, B43legacy_PHY_G_LO_CONTROL, 0); + switch (phy->rev) { + case 4: case 6: case 7: + b43legacy_phy_write(dev, 0x0478, + b43legacy_phy_read(dev, + 0x0478) | 0x0100); + b43legacy_phy_write(dev, 0x0801, + b43legacy_phy_read(dev, + 0x0801) | 0x0040); + break; + case 3: case 5: + b43legacy_phy_write(dev, 0x0801, + b43legacy_phy_read(dev, + 0x0801) & 0xFFBF); + break; + } + b43legacy_phy_write(dev, 0x0060, + b43legacy_phy_read(dev, 0x0060) + | 0x0040); + b43legacy_phy_write(dev, 0x0014, + b43legacy_phy_read(dev, 0x0014) + | 0x0200); + } + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0070); + b43legacy_set_all_gains(dev, 0, 8, 0); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x00F7); + if (phy->rev >= 2) { + b43legacy_phy_write(dev, 0x0811, + (b43legacy_phy_read(dev, 0x0811) + & 0xFFCF) | 0x0030); + b43legacy_phy_write(dev, 0x0812, + (b43legacy_phy_read(dev, 0x0812) + & 0xFFCF) | 0x0010); + } + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x0080); + udelay(20); + + nrssi0 = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F); + if (nrssi0 >= 0x0020) + nrssi0 -= 0x0040; + + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + & 0x007F); + if (phy->analog >= 2) + b43legacy_phy_write(dev, 0x0003, + (b43legacy_phy_read(dev, 0x0003) + & 0xFF9F) | 0x0040); + + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) | 0x2000); + b43legacy_radio_write16(dev, 0x007A, + b43legacy_radio_read16(dev, 0x007A) + | 0x000F); + b43legacy_phy_write(dev, 0x0015, 0xF330); + if (phy->rev >= 2) { + b43legacy_phy_write(dev, 0x0812, + (b43legacy_phy_read(dev, 0x0812) + & 0xFFCF) | 0x0020); + b43legacy_phy_write(dev, 0x0811, + (b43legacy_phy_read(dev, 0x0811) + & 0xFFCF) | 0x0020); + } + + b43legacy_set_all_gains(dev, 3, 0, 1); + if (phy->radio_rev == 8) + b43legacy_radio_write16(dev, 0x0043, 0x001F); + else { + tmp = b43legacy_radio_read16(dev, 0x0052) & 0xFF0F; + b43legacy_radio_write16(dev, 0x0052, tmp | 0x0060); + tmp = b43legacy_radio_read16(dev, 0x0043) & 0xFFF0; + b43legacy_radio_write16(dev, 0x0043, tmp | 0x0009); + } + b43legacy_phy_write(dev, 0x005A, 0x0480); + b43legacy_phy_write(dev, 0x0059, 0x0810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + udelay(20); + nrssi1 = (s16)((b43legacy_phy_read(dev, 0x047F) >> 8) & 0x003F); + if (nrssi1 >= 0x0020) + nrssi1 -= 0x0040; + if (nrssi0 == nrssi1) + phy->nrssislope = 0x00010000; + else + phy->nrssislope = 0x00400000 / (nrssi0 - nrssi1); + if (nrssi0 >= -4) { + phy->nrssi[0] = nrssi1; + phy->nrssi[1] = nrssi0; + } + if (phy->rev >= 3) { + b43legacy_phy_write(dev, 0x002E, backup[10]); + b43legacy_phy_write(dev, 0x002F, backup[11]); + b43legacy_phy_write(dev, 0x080F, backup[12]); + b43legacy_phy_write(dev, B43legacy_PHY_G_LO_CONTROL, + backup[13]); + } + if (phy->rev >= 2) { + b43legacy_phy_write(dev, 0x0812, + b43legacy_phy_read(dev, 0x0812) + & 0xFFCF); + b43legacy_phy_write(dev, 0x0811, + b43legacy_phy_read(dev, 0x0811) + & 0xFFCF); + } + + b43legacy_radio_write16(dev, 0x007A, backup[0]); + b43legacy_radio_write16(dev, 0x0052, backup[1]); + b43legacy_radio_write16(dev, 0x0043, backup[2]); + b43legacy_write16(dev, 0x03E2, backup[7]); + b43legacy_write16(dev, 0x03E6, backup[8]); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, backup[9]); + b43legacy_phy_write(dev, 0x0015, backup[3]); + b43legacy_phy_write(dev, 0x005A, backup[4]); + b43legacy_phy_write(dev, 0x0059, backup[5]); + b43legacy_phy_write(dev, 0x0058, backup[6]); + b43legacy_synth_pu_workaround(dev, phy->channel); + b43legacy_phy_write(dev, 0x0802, + b43legacy_phy_read(dev, 0x0802) | 0x0003); + b43legacy_set_original_gains(dev); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + | 0x8000); + if (phy->rev >= 3) { + b43legacy_phy_write(dev, 0x0801, backup[14]); + b43legacy_phy_write(dev, 0x0060, backup[15]); + b43legacy_phy_write(dev, 0x0014, backup[16]); + b43legacy_phy_write(dev, 0x0478, backup[17]); + } + b43legacy_nrssi_mem_update(dev); + b43legacy_calc_nrssi_threshold(dev); + break; + default: + B43legacy_BUG_ON(1); + } +} + +void b43legacy_calc_nrssi_threshold(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + s32 threshold; + s32 a; + s32 b; + s16 tmp16; + u16 tmp_u16; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: { + if (phy->radio_ver != 0x2050) + return; + if (!(dev->dev->bus->sprom.boardflags_lo & + B43legacy_BFL_RSSI)) + return; + + if (phy->radio_rev >= 6) { + threshold = (phy->nrssi[1] - phy->nrssi[0]) * 32; + threshold += 20 * (phy->nrssi[0] + 1); + threshold /= 40; + } else + threshold = phy->nrssi[1] - 5; + + threshold = clamp_val(threshold, 0, 0x3E); + b43legacy_phy_read(dev, 0x0020); /* dummy read */ + b43legacy_phy_write(dev, 0x0020, (((u16)threshold) << 8) + | 0x001C); + + if (phy->radio_rev >= 6) { + b43legacy_phy_write(dev, 0x0087, 0x0E0D); + b43legacy_phy_write(dev, 0x0086, 0x0C0B); + b43legacy_phy_write(dev, 0x0085, 0x0A09); + b43legacy_phy_write(dev, 0x0084, 0x0808); + b43legacy_phy_write(dev, 0x0083, 0x0808); + b43legacy_phy_write(dev, 0x0082, 0x0604); + b43legacy_phy_write(dev, 0x0081, 0x0302); + b43legacy_phy_write(dev, 0x0080, 0x0100); + } + break; + } + case B43legacy_PHYTYPE_G: + if (!phy->gmode || + !(dev->dev->bus->sprom.boardflags_lo & + B43legacy_BFL_RSSI)) { + tmp16 = b43legacy_nrssi_hw_read(dev, 0x20); + if (tmp16 >= 0x20) + tmp16 -= 0x40; + if (tmp16 < 3) + b43legacy_phy_write(dev, 0x048A, + (b43legacy_phy_read(dev, + 0x048A) & 0xF000) | 0x09EB); + else + b43legacy_phy_write(dev, 0x048A, + (b43legacy_phy_read(dev, + 0x048A) & 0xF000) | 0x0AED); + } else { + if (phy->interfmode == + B43legacy_RADIO_INTERFMODE_NONWLAN) { + a = 0xE; + b = 0xA; + } else if (!phy->aci_wlan_automatic && + phy->aci_enable) { + a = 0x13; + b = 0x12; + } else { + a = 0xE; + b = 0x11; + } + + a = a * (phy->nrssi[1] - phy->nrssi[0]); + a += (phy->nrssi[0] << 6); + if (a < 32) + a += 31; + else + a += 32; + a = a >> 6; + a = clamp_val(a, -31, 31); + + b = b * (phy->nrssi[1] - phy->nrssi[0]); + b += (phy->nrssi[0] << 6); + if (b < 32) + b += 31; + else + b += 32; + b = b >> 6; + b = clamp_val(b, -31, 31); + + tmp_u16 = b43legacy_phy_read(dev, 0x048A) & 0xF000; + tmp_u16 |= ((u32)b & 0x0000003F); + tmp_u16 |= (((u32)a & 0x0000003F) << 6); + b43legacy_phy_write(dev, 0x048A, tmp_u16); + } + break; + default: + B43legacy_BUG_ON(1); + } +} + +/* Stack implementation to save/restore values from the + * interference mitigation code. + * It is save to restore values in random order. + */ +static void _stack_save(u32 *_stackptr, size_t *stackidx, + u8 id, u16 offset, u16 value) +{ + u32 *stackptr = &(_stackptr[*stackidx]); + + B43legacy_WARN_ON(!((offset & 0xE000) == 0x0000)); + B43legacy_WARN_ON(!((id & 0xF8) == 0x00)); + *stackptr = offset; + *stackptr |= ((u32)id) << 13; + *stackptr |= ((u32)value) << 16; + (*stackidx)++; + B43legacy_WARN_ON(!(*stackidx < B43legacy_INTERFSTACK_SIZE)); +} + +static u16 _stack_restore(u32 *stackptr, + u8 id, u16 offset) +{ + size_t i; + + B43legacy_WARN_ON(!((offset & 0xE000) == 0x0000)); + B43legacy_WARN_ON(!((id & 0xF8) == 0x00)); + for (i = 0; i < B43legacy_INTERFSTACK_SIZE; i++, stackptr++) { + if ((*stackptr & 0x00001FFF) != offset) + continue; + if (((*stackptr & 0x00007000) >> 13) != id) + continue; + return ((*stackptr & 0xFFFF0000) >> 16); + } + B43legacy_BUG_ON(1); + + return 0; +} + +#define phy_stacksave(offset) \ + do { \ + _stack_save(stack, &stackidx, 0x1, (offset), \ + b43legacy_phy_read(dev, (offset))); \ + } while (0) +#define phy_stackrestore(offset) \ + do { \ + b43legacy_phy_write(dev, (offset), \ + _stack_restore(stack, 0x1, \ + (offset))); \ + } while (0) +#define radio_stacksave(offset) \ + do { \ + _stack_save(stack, &stackidx, 0x2, (offset), \ + b43legacy_radio_read16(dev, (offset))); \ + } while (0) +#define radio_stackrestore(offset) \ + do { \ + b43legacy_radio_write16(dev, (offset), \ + _stack_restore(stack, 0x2, \ + (offset))); \ + } while (0) +#define ilt_stacksave(offset) \ + do { \ + _stack_save(stack, &stackidx, 0x3, (offset), \ + b43legacy_ilt_read(dev, (offset))); \ + } while (0) +#define ilt_stackrestore(offset) \ + do { \ + b43legacy_ilt_write(dev, (offset), \ + _stack_restore(stack, 0x3, \ + (offset))); \ + } while (0) + +static void +b43legacy_radio_interference_mitigation_enable(struct b43legacy_wldev *dev, + int mode) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 tmp; + u16 flipped; + u32 tmp32; + size_t stackidx = 0; + u32 *stack = phy->interfstack; + + switch (mode) { + case B43legacy_RADIO_INTERFMODE_NONWLAN: + if (phy->rev != 1) { + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) + | 0x0800); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) & ~0x4000); + break; + } + radio_stacksave(0x0078); + tmp = (b43legacy_radio_read16(dev, 0x0078) & 0x001E); + flipped = flip_4bit(tmp); + if (flipped < 10 && flipped >= 8) + flipped = 7; + else if (flipped >= 10) + flipped -= 3; + flipped = flip_4bit(flipped); + flipped = (flipped << 1) | 0x0020; + b43legacy_radio_write16(dev, 0x0078, flipped); + + b43legacy_calc_nrssi_threshold(dev); + + phy_stacksave(0x0406); + b43legacy_phy_write(dev, 0x0406, 0x7E28); + + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) | 0x0800); + b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD, + b43legacy_phy_read(dev, + B43legacy_PHY_RADIO_BITFIELD) | 0x1000); + + phy_stacksave(0x04A0); + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) & 0xC0C0) + | 0x0008); + phy_stacksave(0x04A1); + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) & 0xC0C0) + | 0x0605); + phy_stacksave(0x04A2); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) & 0xC0C0) + | 0x0204); + phy_stacksave(0x04A8); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) & 0xC0C0) + | 0x0803); + phy_stacksave(0x04AB); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) & 0xC0C0) + | 0x0605); + + phy_stacksave(0x04A7); + b43legacy_phy_write(dev, 0x04A7, 0x0002); + phy_stacksave(0x04A3); + b43legacy_phy_write(dev, 0x04A3, 0x287A); + phy_stacksave(0x04A9); + b43legacy_phy_write(dev, 0x04A9, 0x2027); + phy_stacksave(0x0493); + b43legacy_phy_write(dev, 0x0493, 0x32F5); + phy_stacksave(0x04AA); + b43legacy_phy_write(dev, 0x04AA, 0x2027); + phy_stacksave(0x04AC); + b43legacy_phy_write(dev, 0x04AC, 0x32F5); + break; + case B43legacy_RADIO_INTERFMODE_MANUALWLAN: + if (b43legacy_phy_read(dev, 0x0033) & 0x0800) + break; + + phy->aci_enable = true; + + phy_stacksave(B43legacy_PHY_RADIO_BITFIELD); + phy_stacksave(B43legacy_PHY_G_CRS); + if (phy->rev < 2) + phy_stacksave(0x0406); + else { + phy_stacksave(0x04C0); + phy_stacksave(0x04C1); + } + phy_stacksave(0x0033); + phy_stacksave(0x04A7); + phy_stacksave(0x04A3); + phy_stacksave(0x04A9); + phy_stacksave(0x04AA); + phy_stacksave(0x04AC); + phy_stacksave(0x0493); + phy_stacksave(0x04A1); + phy_stacksave(0x04A0); + phy_stacksave(0x04A2); + phy_stacksave(0x048A); + phy_stacksave(0x04A8); + phy_stacksave(0x04AB); + if (phy->rev == 2) { + phy_stacksave(0x04AD); + phy_stacksave(0x04AE); + } else if (phy->rev >= 3) { + phy_stacksave(0x04AD); + phy_stacksave(0x0415); + phy_stacksave(0x0416); + phy_stacksave(0x0417); + ilt_stacksave(0x1A00 + 0x2); + ilt_stacksave(0x1A00 + 0x3); + } + phy_stacksave(0x042B); + phy_stacksave(0x048C); + + b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD, + b43legacy_phy_read(dev, + B43legacy_PHY_RADIO_BITFIELD) & ~0x1000); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + (b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) + & 0xFFFC) | 0x0002); + + b43legacy_phy_write(dev, 0x0033, 0x0800); + b43legacy_phy_write(dev, 0x04A3, 0x2027); + b43legacy_phy_write(dev, 0x04A9, 0x1CA8); + b43legacy_phy_write(dev, 0x0493, 0x287A); + b43legacy_phy_write(dev, 0x04AA, 0x1CA8); + b43legacy_phy_write(dev, 0x04AC, 0x287A); + + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) + & 0xFFC0) | 0x001A); + b43legacy_phy_write(dev, 0x04A7, 0x000D); + + if (phy->rev < 2) + b43legacy_phy_write(dev, 0x0406, 0xFF0D); + else if (phy->rev == 2) { + b43legacy_phy_write(dev, 0x04C0, 0xFFFF); + b43legacy_phy_write(dev, 0x04C1, 0x00A9); + } else { + b43legacy_phy_write(dev, 0x04C0, 0x00C1); + b43legacy_phy_write(dev, 0x04C1, 0x0059); + } + + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) + & 0xC0FF) | 0x1800); + b43legacy_phy_write(dev, 0x04A1, + (b43legacy_phy_read(dev, 0x04A1) + & 0xFFC0) | 0x0015); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) + & 0xCFFF) | 0x1000); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) + & 0xF0FF) | 0x0A00); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xCFFF) | 0x1000); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xF0FF) | 0x0800); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xFFCF) | 0x0010); + b43legacy_phy_write(dev, 0x04AB, + (b43legacy_phy_read(dev, 0x04AB) + & 0xFFF0) | 0x0005); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) + & 0xFFCF) | 0x0010); + b43legacy_phy_write(dev, 0x04A8, + (b43legacy_phy_read(dev, 0x04A8) + & 0xFFF0) | 0x0006); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) + & 0xF0FF) | 0x0800); + b43legacy_phy_write(dev, 0x04A0, + (b43legacy_phy_read(dev, 0x04A0) + & 0xF0FF) | 0x0500); + b43legacy_phy_write(dev, 0x04A2, + (b43legacy_phy_read(dev, 0x04A2) + & 0xFFF0) | 0x000B); + + if (phy->rev >= 3) { + b43legacy_phy_write(dev, 0x048A, + b43legacy_phy_read(dev, 0x048A) + & ~0x8000); + b43legacy_phy_write(dev, 0x0415, + (b43legacy_phy_read(dev, 0x0415) + & 0x8000) | 0x36D8); + b43legacy_phy_write(dev, 0x0416, + (b43legacy_phy_read(dev, 0x0416) + & 0x8000) | 0x36D8); + b43legacy_phy_write(dev, 0x0417, + (b43legacy_phy_read(dev, 0x0417) + & 0xFE00) | 0x016D); + } else { + b43legacy_phy_write(dev, 0x048A, + b43legacy_phy_read(dev, 0x048A) + | 0x1000); + b43legacy_phy_write(dev, 0x048A, + (b43legacy_phy_read(dev, 0x048A) + & 0x9FFF) | 0x2000); + tmp32 = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET); + if (!(tmp32 & 0x800)) { + tmp32 |= 0x800; + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + tmp32); + } + } + if (phy->rev >= 2) + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) + | 0x0800); + b43legacy_phy_write(dev, 0x048C, + (b43legacy_phy_read(dev, 0x048C) + & 0xF0FF) | 0x0200); + if (phy->rev == 2) { + b43legacy_phy_write(dev, 0x04AE, + (b43legacy_phy_read(dev, 0x04AE) + & 0xFF00) | 0x007F); + b43legacy_phy_write(dev, 0x04AD, + (b43legacy_phy_read(dev, 0x04AD) + & 0x00FF) | 0x1300); + } else if (phy->rev >= 6) { + b43legacy_ilt_write(dev, 0x1A00 + 0x3, 0x007F); + b43legacy_ilt_write(dev, 0x1A00 + 0x2, 0x007F); + b43legacy_phy_write(dev, 0x04AD, + b43legacy_phy_read(dev, 0x04AD) + & 0x00FF); + } + b43legacy_calc_nrssi_slope(dev); + break; + default: + B43legacy_BUG_ON(1); + } +} + +static void +b43legacy_radio_interference_mitigation_disable(struct b43legacy_wldev *dev, + int mode) +{ + struct b43legacy_phy *phy = &dev->phy; + u32 tmp32; + u32 *stack = phy->interfstack; + + switch (mode) { + case B43legacy_RADIO_INTERFMODE_NONWLAN: + if (phy->rev != 1) { + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) + & ~0x0800); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) | 0x4000); + break; + } + phy_stackrestore(0x0078); + b43legacy_calc_nrssi_threshold(dev); + phy_stackrestore(0x0406); + b43legacy_phy_write(dev, 0x042B, + b43legacy_phy_read(dev, 0x042B) & ~0x0800); + if (!dev->bad_frames_preempt) + b43legacy_phy_write(dev, B43legacy_PHY_RADIO_BITFIELD, + b43legacy_phy_read(dev, + B43legacy_PHY_RADIO_BITFIELD) + & ~(1 << 11)); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + b43legacy_phy_read(dev, B43legacy_PHY_G_CRS) + | 0x4000); + phy_stackrestore(0x04A0); + phy_stackrestore(0x04A1); + phy_stackrestore(0x04A2); + phy_stackrestore(0x04A8); + phy_stackrestore(0x04AB); + phy_stackrestore(0x04A7); + phy_stackrestore(0x04A3); + phy_stackrestore(0x04A9); + phy_stackrestore(0x0493); + phy_stackrestore(0x04AA); + phy_stackrestore(0x04AC); + break; + case B43legacy_RADIO_INTERFMODE_MANUALWLAN: + if (!(b43legacy_phy_read(dev, 0x0033) & 0x0800)) + break; + + phy->aci_enable = false; + + phy_stackrestore(B43legacy_PHY_RADIO_BITFIELD); + phy_stackrestore(B43legacy_PHY_G_CRS); + phy_stackrestore(0x0033); + phy_stackrestore(0x04A3); + phy_stackrestore(0x04A9); + phy_stackrestore(0x0493); + phy_stackrestore(0x04AA); + phy_stackrestore(0x04AC); + phy_stackrestore(0x04A0); + phy_stackrestore(0x04A7); + if (phy->rev >= 2) { + phy_stackrestore(0x04C0); + phy_stackrestore(0x04C1); + } else + phy_stackrestore(0x0406); + phy_stackrestore(0x04A1); + phy_stackrestore(0x04AB); + phy_stackrestore(0x04A8); + if (phy->rev == 2) { + phy_stackrestore(0x04AD); + phy_stackrestore(0x04AE); + } else if (phy->rev >= 3) { + phy_stackrestore(0x04AD); + phy_stackrestore(0x0415); + phy_stackrestore(0x0416); + phy_stackrestore(0x0417); + ilt_stackrestore(0x1A00 + 0x2); + ilt_stackrestore(0x1A00 + 0x3); + } + phy_stackrestore(0x04A2); + phy_stackrestore(0x04A8); + phy_stackrestore(0x042B); + phy_stackrestore(0x048C); + tmp32 = b43legacy_shm_read32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET); + if (tmp32 & 0x800) { + tmp32 &= ~0x800; + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + tmp32); + } + b43legacy_calc_nrssi_slope(dev); + break; + default: + B43legacy_BUG_ON(1); + } +} + +#undef phy_stacksave +#undef phy_stackrestore +#undef radio_stacksave +#undef radio_stackrestore +#undef ilt_stacksave +#undef ilt_stackrestore + +int b43legacy_radio_set_interference_mitigation(struct b43legacy_wldev *dev, + int mode) +{ + struct b43legacy_phy *phy = &dev->phy; + int currentmode; + + if ((phy->type != B43legacy_PHYTYPE_G) || + (phy->rev == 0) || (!phy->gmode)) + return -ENODEV; + + phy->aci_wlan_automatic = false; + switch (mode) { + case B43legacy_RADIO_INTERFMODE_AUTOWLAN: + phy->aci_wlan_automatic = true; + if (phy->aci_enable) + mode = B43legacy_RADIO_INTERFMODE_MANUALWLAN; + else + mode = B43legacy_RADIO_INTERFMODE_NONE; + break; + case B43legacy_RADIO_INTERFMODE_NONE: + case B43legacy_RADIO_INTERFMODE_NONWLAN: + case B43legacy_RADIO_INTERFMODE_MANUALWLAN: + break; + default: + return -EINVAL; + } + + currentmode = phy->interfmode; + if (currentmode == mode) + return 0; + if (currentmode != B43legacy_RADIO_INTERFMODE_NONE) + b43legacy_radio_interference_mitigation_disable(dev, + currentmode); + + if (mode == B43legacy_RADIO_INTERFMODE_NONE) { + phy->aci_enable = false; + phy->aci_hw_rssi = false; + } else + b43legacy_radio_interference_mitigation_enable(dev, mode); + phy->interfmode = mode; + + return 0; +} + +u16 b43legacy_radio_calibrationvalue(struct b43legacy_wldev *dev) +{ + u16 reg; + u16 index; + u16 ret; + + reg = b43legacy_radio_read16(dev, 0x0060); + index = (reg & 0x001E) >> 1; + ret = rcc_table[index] << 1; + ret |= (reg & 0x0001); + ret |= 0x0020; + + return ret; +} + +#define LPD(L, P, D) (((L) << 2) | ((P) << 1) | ((D) << 0)) +static u16 b43legacy_get_812_value(struct b43legacy_wldev *dev, u8 lpd) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 loop_or = 0; + u16 adj_loopback_gain = phy->loopback_gain[0]; + u8 loop; + u16 extern_lna_control; + + if (!phy->gmode) + return 0; + if (!has_loopback_gain(phy)) { + if (phy->rev < 7 || !(dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_EXTLNA)) { + switch (lpd) { + case LPD(0, 1, 1): + return 0x0FB2; + case LPD(0, 0, 1): + return 0x00B2; + case LPD(1, 0, 1): + return 0x30B2; + case LPD(1, 0, 0): + return 0x30B3; + default: + B43legacy_BUG_ON(1); + } + } else { + switch (lpd) { + case LPD(0, 1, 1): + return 0x8FB2; + case LPD(0, 0, 1): + return 0x80B2; + case LPD(1, 0, 1): + return 0x20B2; + case LPD(1, 0, 0): + return 0x20B3; + default: + B43legacy_BUG_ON(1); + } + } + } else { + if (phy->radio_rev == 8) + adj_loopback_gain += 0x003E; + else + adj_loopback_gain += 0x0026; + if (adj_loopback_gain >= 0x46) { + adj_loopback_gain -= 0x46; + extern_lna_control = 0x3000; + } else if (adj_loopback_gain >= 0x3A) { + adj_loopback_gain -= 0x3A; + extern_lna_control = 0x2000; + } else if (adj_loopback_gain >= 0x2E) { + adj_loopback_gain -= 0x2E; + extern_lna_control = 0x1000; + } else { + adj_loopback_gain -= 0x10; + extern_lna_control = 0x0000; + } + for (loop = 0; loop < 16; loop++) { + u16 tmp = adj_loopback_gain - 6 * loop; + if (tmp < 6) + break; + } + + loop_or = (loop << 8) | extern_lna_control; + if (phy->rev >= 7 && dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_EXTLNA) { + if (extern_lna_control) + loop_or |= 0x8000; + switch (lpd) { + case LPD(0, 1, 1): + return 0x8F92; + case LPD(0, 0, 1): + return (0x8092 | loop_or); + case LPD(1, 0, 1): + return (0x2092 | loop_or); + case LPD(1, 0, 0): + return (0x2093 | loop_or); + default: + B43legacy_BUG_ON(1); + } + } else { + switch (lpd) { + case LPD(0, 1, 1): + return 0x0F92; + case LPD(0, 0, 1): + case LPD(1, 0, 1): + return (0x0092 | loop_or); + case LPD(1, 0, 0): + return (0x0093 | loop_or); + default: + B43legacy_BUG_ON(1); + } + } + } + return 0; +} + +u16 b43legacy_radio_init2050(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 backup[21] = { 0 }; + u16 ret; + u16 i; + u16 j; + u32 tmp1 = 0; + u32 tmp2 = 0; + + backup[0] = b43legacy_radio_read16(dev, 0x0043); + backup[14] = b43legacy_radio_read16(dev, 0x0051); + backup[15] = b43legacy_radio_read16(dev, 0x0052); + backup[1] = b43legacy_phy_read(dev, 0x0015); + backup[16] = b43legacy_phy_read(dev, 0x005A); + backup[17] = b43legacy_phy_read(dev, 0x0059); + backup[18] = b43legacy_phy_read(dev, 0x0058); + if (phy->type == B43legacy_PHYTYPE_B) { + backup[2] = b43legacy_phy_read(dev, 0x0030); + backup[3] = b43legacy_read16(dev, 0x03EC); + b43legacy_phy_write(dev, 0x0030, 0x00FF); + b43legacy_write16(dev, 0x03EC, 0x3F3F); + } else { + if (phy->gmode) { + backup[4] = b43legacy_phy_read(dev, 0x0811); + backup[5] = b43legacy_phy_read(dev, 0x0812); + backup[6] = b43legacy_phy_read(dev, 0x0814); + backup[7] = b43legacy_phy_read(dev, 0x0815); + backup[8] = b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS); + backup[9] = b43legacy_phy_read(dev, 0x0802); + b43legacy_phy_write(dev, 0x0814, + (b43legacy_phy_read(dev, 0x0814) + | 0x0003)); + b43legacy_phy_write(dev, 0x0815, + (b43legacy_phy_read(dev, 0x0815) + & 0xFFFC)); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + (b43legacy_phy_read(dev, + B43legacy_PHY_G_CRS) & 0x7FFF)); + b43legacy_phy_write(dev, 0x0802, + (b43legacy_phy_read(dev, 0x0802) + & 0xFFFC)); + if (phy->rev > 1) { /* loopback gain enabled */ + backup[19] = b43legacy_phy_read(dev, 0x080F); + backup[20] = b43legacy_phy_read(dev, 0x0810); + if (phy->rev >= 3) + b43legacy_phy_write(dev, 0x080F, + 0xC020); + else + b43legacy_phy_write(dev, 0x080F, + 0x8020); + b43legacy_phy_write(dev, 0x0810, 0x0000); + } + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(0, 1, 1))); + if (phy->rev < 7 || + !(dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_EXTLNA)) + b43legacy_phy_write(dev, 0x0811, 0x01B3); + else + b43legacy_phy_write(dev, 0x0811, 0x09B3); + } + } + b43legacy_write16(dev, B43legacy_MMIO_PHY_RADIO, + (b43legacy_read16(dev, B43legacy_MMIO_PHY_RADIO) + | 0x8000)); + backup[10] = b43legacy_phy_read(dev, 0x0035); + b43legacy_phy_write(dev, 0x0035, + (b43legacy_phy_read(dev, 0x0035) & 0xFF7F)); + backup[11] = b43legacy_read16(dev, 0x03E6); + backup[12] = b43legacy_read16(dev, B43legacy_MMIO_CHANNEL_EXT); + + /* Initialization */ + if (phy->analog == 0) + b43legacy_write16(dev, 0x03E6, 0x0122); + else { + if (phy->analog >= 2) + b43legacy_phy_write(dev, 0x0003, + (b43legacy_phy_read(dev, 0x0003) + & 0xFFBF) | 0x0040); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + (b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) | 0x2000)); + } + + ret = b43legacy_radio_calibrationvalue(dev); + + if (phy->type == B43legacy_PHYTYPE_B) + b43legacy_radio_write16(dev, 0x0078, 0x0026); + + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(0, 1, 1))); + b43legacy_phy_write(dev, 0x0015, 0xBFAF); + b43legacy_phy_write(dev, 0x002B, 0x1403); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(0, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xBFA0); + b43legacy_radio_write16(dev, 0x0051, + (b43legacy_radio_read16(dev, 0x0051) + | 0x0004)); + if (phy->radio_rev == 8) + b43legacy_radio_write16(dev, 0x0043, 0x001F); + else { + b43legacy_radio_write16(dev, 0x0052, 0x0000); + b43legacy_radio_write16(dev, 0x0043, + (b43legacy_radio_read16(dev, 0x0043) + & 0xFFF0) | 0x0009); + } + b43legacy_phy_write(dev, 0x0058, 0x0000); + + for (i = 0; i < 16; i++) { + b43legacy_phy_write(dev, 0x005A, 0x0480); + b43legacy_phy_write(dev, 0x0059, 0xC810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xAFB0); + udelay(10); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xEFB0); + udelay(10); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 0))); + b43legacy_phy_write(dev, 0x0015, 0xFFF0); + udelay(20); + tmp1 += b43legacy_phy_read(dev, 0x002D); + b43legacy_phy_write(dev, 0x0058, 0x0000); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xAFB0); + } + + tmp1++; + tmp1 >>= 9; + udelay(10); + b43legacy_phy_write(dev, 0x0058, 0x0000); + + for (i = 0; i < 16; i++) { + b43legacy_radio_write16(dev, 0x0078, (flip_4bit(i) << 1) + | 0x0020); + backup[13] = b43legacy_radio_read16(dev, 0x0078); + udelay(10); + for (j = 0; j < 16; j++) { + b43legacy_phy_write(dev, 0x005A, 0x0D80); + b43legacy_phy_write(dev, 0x0059, 0xC810); + b43legacy_phy_write(dev, 0x0058, 0x000D); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xAFB0); + udelay(10); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xEFB0); + udelay(10); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 0))); + b43legacy_phy_write(dev, 0x0015, 0xFFF0); + udelay(10); + tmp2 += b43legacy_phy_read(dev, 0x002D); + b43legacy_phy_write(dev, 0x0058, 0x0000); + if (phy->gmode) + b43legacy_phy_write(dev, 0x0812, + b43legacy_get_812_value(dev, + LPD(1, 0, 1))); + b43legacy_phy_write(dev, 0x0015, 0xAFB0); + } + tmp2++; + tmp2 >>= 8; + if (tmp1 < tmp2) + break; + } + + /* Restore the registers */ + b43legacy_phy_write(dev, 0x0015, backup[1]); + b43legacy_radio_write16(dev, 0x0051, backup[14]); + b43legacy_radio_write16(dev, 0x0052, backup[15]); + b43legacy_radio_write16(dev, 0x0043, backup[0]); + b43legacy_phy_write(dev, 0x005A, backup[16]); + b43legacy_phy_write(dev, 0x0059, backup[17]); + b43legacy_phy_write(dev, 0x0058, backup[18]); + b43legacy_write16(dev, 0x03E6, backup[11]); + if (phy->analog != 0) + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, backup[12]); + b43legacy_phy_write(dev, 0x0035, backup[10]); + b43legacy_radio_selectchannel(dev, phy->channel, 1); + if (phy->type == B43legacy_PHYTYPE_B) { + b43legacy_phy_write(dev, 0x0030, backup[2]); + b43legacy_write16(dev, 0x03EC, backup[3]); + } else { + if (phy->gmode) { + b43legacy_write16(dev, B43legacy_MMIO_PHY_RADIO, + (b43legacy_read16(dev, + B43legacy_MMIO_PHY_RADIO) & 0x7FFF)); + b43legacy_phy_write(dev, 0x0811, backup[4]); + b43legacy_phy_write(dev, 0x0812, backup[5]); + b43legacy_phy_write(dev, 0x0814, backup[6]); + b43legacy_phy_write(dev, 0x0815, backup[7]); + b43legacy_phy_write(dev, B43legacy_PHY_G_CRS, + backup[8]); + b43legacy_phy_write(dev, 0x0802, backup[9]); + if (phy->rev > 1) { + b43legacy_phy_write(dev, 0x080F, backup[19]); + b43legacy_phy_write(dev, 0x0810, backup[20]); + } + } + } + if (i >= 15) + ret = backup[13]; + + return ret; +} + +static inline +u16 freq_r3A_value(u16 frequency) +{ + u16 value; + + if (frequency < 5091) + value = 0x0040; + else if (frequency < 5321) + value = 0x0000; + else if (frequency < 5806) + value = 0x0080; + else + value = 0x0040; + + return value; +} + +int b43legacy_radio_selectchannel(struct b43legacy_wldev *dev, + u8 channel, + int synthetic_pu_workaround) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (channel == 0xFF) { + switch (phy->type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + channel = B43legacy_RADIO_DEFAULT_CHANNEL_BG; + break; + default: + B43legacy_WARN_ON(1); + } + } + +/* TODO: Check if channel is valid - return -EINVAL if not */ + if (synthetic_pu_workaround) + b43legacy_synth_pu_workaround(dev, channel); + + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL, + channel2freq_bg(channel)); + + if (channel == 14) { + if (dev->dev->bus->sprom.country_code == 5) /* JAPAN) */ + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + b43legacy_shm_read32(dev, + B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET) + & ~(1 << 7)); + else + b43legacy_shm_write32(dev, B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET, + b43legacy_shm_read32(dev, + B43legacy_SHM_SHARED, + B43legacy_UCODEFLAGS_OFFSET) + | (1 << 7)); + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) | (1 << 11)); + } else + b43legacy_write16(dev, B43legacy_MMIO_CHANNEL_EXT, + b43legacy_read16(dev, + B43legacy_MMIO_CHANNEL_EXT) & 0xF7BF); + + phy->channel = channel; + /*XXX: Using the longer of 2 timeouts (8000 vs 2000 usecs). Specs states + * that 2000 usecs might suffice. */ + msleep(8); + + return 0; +} + +void b43legacy_radio_set_txantenna(struct b43legacy_wldev *dev, u32 val) +{ + u16 tmp; + + val <<= 8; + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x0022) & 0xFCFF; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0022, tmp | val); + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x03A8) & 0xFCFF; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x03A8, tmp | val); + tmp = b43legacy_shm_read16(dev, B43legacy_SHM_SHARED, 0x0054) & 0xFCFF; + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0054, tmp | val); +} + +/* http://bcm-specs.sipsolutions.net/TX_Gain_Base_Band */ +static u16 b43legacy_get_txgain_base_band(u16 txpower) +{ + u16 ret; + + B43legacy_WARN_ON(txpower > 63); + + if (txpower >= 54) + ret = 2; + else if (txpower >= 49) + ret = 4; + else if (txpower >= 44) + ret = 5; + else + ret = 6; + + return ret; +} + +/* http://bcm-specs.sipsolutions.net/TX_Gain_Radio_Frequency_Power_Amplifier */ +static u16 b43legacy_get_txgain_freq_power_amp(u16 txpower) +{ + u16 ret; + + B43legacy_WARN_ON(txpower > 63); + + if (txpower >= 32) + ret = 0; + else if (txpower >= 25) + ret = 1; + else if (txpower >= 20) + ret = 2; + else if (txpower >= 12) + ret = 3; + else + ret = 4; + + return ret; +} + +/* http://bcm-specs.sipsolutions.net/TX_Gain_Digital_Analog_Converter */ +static u16 b43legacy_get_txgain_dac(u16 txpower) +{ + u16 ret; + + B43legacy_WARN_ON(txpower > 63); + + if (txpower >= 54) + ret = txpower - 53; + else if (txpower >= 49) + ret = txpower - 42; + else if (txpower >= 44) + ret = txpower - 37; + else if (txpower >= 32) + ret = txpower - 32; + else if (txpower >= 25) + ret = txpower - 20; + else if (txpower >= 20) + ret = txpower - 13; + else if (txpower >= 12) + ret = txpower - 8; + else + ret = txpower; + + return ret; +} + +void b43legacy_radio_set_txpower_a(struct b43legacy_wldev *dev, u16 txpower) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 pamp; + u16 base; + u16 dac; + u16 ilt; + + txpower = clamp_val(txpower, 0, 63); + + pamp = b43legacy_get_txgain_freq_power_amp(txpower); + pamp <<= 5; + pamp &= 0x00E0; + b43legacy_phy_write(dev, 0x0019, pamp); + + base = b43legacy_get_txgain_base_band(txpower); + base &= 0x000F; + b43legacy_phy_write(dev, 0x0017, base | 0x0020); + + ilt = b43legacy_ilt_read(dev, 0x3001); + ilt &= 0x0007; + + dac = b43legacy_get_txgain_dac(txpower); + dac <<= 3; + dac |= ilt; + + b43legacy_ilt_write(dev, 0x3001, dac); + + phy->txpwr_offset = txpower; + + /* TODO: FuncPlaceholder (Adjust BB loft cancel) */ +} + +void b43legacy_radio_set_txpower_bg(struct b43legacy_wldev *dev, + u16 baseband_attenuation, + u16 radio_attenuation, + u16 txpower) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (baseband_attenuation == 0xFFFF) + baseband_attenuation = phy->bbatt; + if (radio_attenuation == 0xFFFF) + radio_attenuation = phy->rfatt; + if (txpower == 0xFFFF) + txpower = phy->txctl1; + phy->bbatt = baseband_attenuation; + phy->rfatt = radio_attenuation; + phy->txctl1 = txpower; + + B43legacy_WARN_ON(baseband_attenuation > 11); + if (phy->radio_rev < 6) + B43legacy_WARN_ON(radio_attenuation > 9); + else + B43legacy_WARN_ON(radio_attenuation > 31); + B43legacy_WARN_ON(txpower > 7); + + b43legacy_phy_set_baseband_attenuation(dev, baseband_attenuation); + b43legacy_radio_write16(dev, 0x0043, radio_attenuation); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0064, + radio_attenuation); + if (phy->radio_ver == 0x2050) + b43legacy_radio_write16(dev, 0x0052, + (b43legacy_radio_read16(dev, 0x0052) + & ~0x0070) | ((txpower << 4) & 0x0070)); + /* FIXME: The spec is very weird and unclear here. */ + if (phy->type == B43legacy_PHYTYPE_G) + b43legacy_phy_lo_adjust(dev, 0); +} + +u16 b43legacy_default_baseband_attenuation(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (phy->radio_ver == 0x2050 && phy->radio_rev < 6) + return 0; + return 2; +} + +u16 b43legacy_default_radio_attenuation(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + u16 att = 0xFFFF; + + switch (phy->radio_ver) { + case 0x2053: + switch (phy->radio_rev) { + case 1: + att = 6; + break; + } + break; + case 0x2050: + switch (phy->radio_rev) { + case 0: + att = 5; + break; + case 1: + if (phy->type == B43legacy_PHYTYPE_G) { + if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x421 && + dev->dev->bus->sprom.board_rev >= 30) + att = 3; + else if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x416) + att = 3; + else + att = 1; + } else { + if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x421 && + dev->dev->bus->sprom.board_rev >= 30) + att = 7; + else + att = 6; + } + break; + case 2: + if (phy->type == B43legacy_PHYTYPE_G) { + if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x421 && + dev->dev->bus->sprom.board_rev >= 30) + att = 3; + else if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == + 0x416) + att = 5; + else if (dev->dev->bus->chip_id == 0x4320) + att = 4; + else + att = 3; + } else + att = 6; + break; + case 3: + att = 5; + break; + case 4: + case 5: + att = 1; + break; + case 6: + case 7: + att = 5; + break; + case 8: + att = 0x1A; + break; + case 9: + default: + att = 5; + } + } + if (is_bcm_board_vendor(dev) && + dev->dev->bus->boardinfo.type == 0x421) { + if (dev->dev->bus->sprom.board_rev < 0x43) + att = 2; + else if (dev->dev->bus->sprom.board_rev < 0x51) + att = 3; + } + if (att == 0xFFFF) + att = 5; + + return att; +} + +u16 b43legacy_default_txctl1(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (phy->radio_ver != 0x2050) + return 0; + if (phy->radio_rev == 1) + return 3; + if (phy->radio_rev < 6) + return 2; + if (phy->radio_rev == 8) + return 1; + return 0; +} + +void b43legacy_radio_turn_on(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + int err; + u8 channel; + + might_sleep(); + + if (phy->radio_on) + return; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + b43legacy_phy_write(dev, 0x0015, 0x8000); + b43legacy_phy_write(dev, 0x0015, 0xCC00); + b43legacy_phy_write(dev, 0x0015, + (phy->gmode ? 0x00C0 : 0x0000)); + if (phy->radio_off_context.valid) { + /* Restore the RFover values. */ + b43legacy_phy_write(dev, B43legacy_PHY_RFOVER, + phy->radio_off_context.rfover); + b43legacy_phy_write(dev, B43legacy_PHY_RFOVERVAL, + phy->radio_off_context.rfoverval); + phy->radio_off_context.valid = false; + } + channel = phy->channel; + err = b43legacy_radio_selectchannel(dev, + B43legacy_RADIO_DEFAULT_CHANNEL_BG, 1); + err |= b43legacy_radio_selectchannel(dev, channel, 0); + B43legacy_WARN_ON(err); + break; + default: + B43legacy_BUG_ON(1); + } + phy->radio_on = true; +} + +void b43legacy_radio_turn_off(struct b43legacy_wldev *dev, bool force) +{ + struct b43legacy_phy *phy = &dev->phy; + + if (!phy->radio_on && !force) + return; + + if (phy->type == B43legacy_PHYTYPE_G && dev->dev->id.revision >= 5) { + u16 rfover, rfoverval; + + rfover = b43legacy_phy_read(dev, B43legacy_PHY_RFOVER); + rfoverval = b43legacy_phy_read(dev, B43legacy_PHY_RFOVERVAL); + if (!force) { + phy->radio_off_context.rfover = rfover; + phy->radio_off_context.rfoverval = rfoverval; + phy->radio_off_context.valid = true; + } + b43legacy_phy_write(dev, B43legacy_PHY_RFOVER, rfover | 0x008C); + b43legacy_phy_write(dev, B43legacy_PHY_RFOVERVAL, + rfoverval & 0xFF73); + } else + b43legacy_phy_write(dev, 0x0015, 0xAA00); + phy->radio_on = false; + b43legacydbg(dev->wl, "Radio initialized\n"); +} + +void b43legacy_radio_clear_tssi(struct b43legacy_wldev *dev) +{ + struct b43legacy_phy *phy = &dev->phy; + + switch (phy->type) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0058, + 0x7F7F); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x005a, + 0x7F7F); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0070, + 0x7F7F); + b43legacy_shm_write16(dev, B43legacy_SHM_SHARED, 0x0072, + 0x7F7F); + break; + } +} diff --git a/drivers/net/wireless/broadcom/b43legacy/radio.h b/drivers/net/wireless/broadcom/b43legacy/radio.h new file mode 100644 index 000000000..ee8b2c8d1 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/radio.h @@ -0,0 +1,84 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + + Broadcom B43legacy wireless driver + + Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>, + Stefano Brivio <stefano.brivio@polimi.it> + Michael Buesch <m@bues.ch> + Danny van Dyk <kugelfang@gentoo.org> + Andreas Jaggi <andreas.jaggi@waterwave.ch> + + Some parts of the code in this file are derived from the ipw2200 + driver Copyright(c) 2003 - 2004 Intel Corporation. + + +*/ + +#ifndef B43legacy_RADIO_H_ +#define B43legacy_RADIO_H_ + +#include "b43legacy.h" + + +#define B43legacy_RADIO_DEFAULT_CHANNEL_BG 6 + +/* Force antenna 0. */ +#define B43legacy_RADIO_TXANTENNA_0 0 +/* Force antenna 1. */ +#define B43legacy_RADIO_TXANTENNA_1 1 +/* Use the RX antenna, that was selected for the most recently + * received good PLCP header. + */ +#define B43legacy_RADIO_TXANTENNA_LASTPLCP 3 +#define B43legacy_RADIO_TXANTENNA_DEFAULT B43legacy_RADIO_TXANTENNA_LASTPLCP + +#define B43legacy_RADIO_INTERFMODE_NONE 0 +#define B43legacy_RADIO_INTERFMODE_NONWLAN 1 +#define B43legacy_RADIO_INTERFMODE_MANUALWLAN 2 +#define B43legacy_RADIO_INTERFMODE_AUTOWLAN 3 + + +void b43legacy_radio_lock(struct b43legacy_wldev *dev); +void b43legacy_radio_unlock(struct b43legacy_wldev *dev); + +u16 b43legacy_radio_read16(struct b43legacy_wldev *dev, u16 offset); +void b43legacy_radio_write16(struct b43legacy_wldev *dev, u16 offset, u16 val); + +u16 b43legacy_radio_init2050(struct b43legacy_wldev *dev); + +void b43legacy_radio_turn_on(struct b43legacy_wldev *dev); +void b43legacy_radio_turn_off(struct b43legacy_wldev *dev, bool force); + +int b43legacy_radio_selectchannel(struct b43legacy_wldev *dev, u8 channel, + int synthetic_pu_workaround); + +void b43legacy_radio_set_txpower_a(struct b43legacy_wldev *dev, u16 txpower); +void b43legacy_radio_set_txpower_bg(struct b43legacy_wldev *dev, + u16 baseband_attenuation, u16 attenuation, + u16 txpower); + +u16 b43legacy_default_baseband_attenuation(struct b43legacy_wldev *dev); +u16 b43legacy_default_radio_attenuation(struct b43legacy_wldev *dev); +u16 b43legacy_default_txctl1(struct b43legacy_wldev *dev); + +void b43legacy_radio_set_txantenna(struct b43legacy_wldev *dev, u32 val); + +void b43legacy_radio_clear_tssi(struct b43legacy_wldev *dev); + +u8 b43legacy_radio_aci_detect(struct b43legacy_wldev *dev, u8 channel); +u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev); + +int b43legacy_radio_set_interference_mitigation(struct b43legacy_wldev *dev, + int mode); + +void b43legacy_calc_nrssi_slope(struct b43legacy_wldev *dev); +void b43legacy_calc_nrssi_threshold(struct b43legacy_wldev *dev); +s16 b43legacy_nrssi_hw_read(struct b43legacy_wldev *dev, u16 offset); +void b43legacy_nrssi_hw_write(struct b43legacy_wldev *dev, u16 offset, s16 val); +void b43legacy_nrssi_hw_update(struct b43legacy_wldev *dev, u16 val); +void b43legacy_nrssi_mem_update(struct b43legacy_wldev *dev); + +u16 b43legacy_radio_calibrationvalue(struct b43legacy_wldev *dev); + +#endif /* B43legacy_RADIO_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/rfkill.c b/drivers/net/wireless/broadcom/b43legacy/rfkill.c new file mode 100644 index 000000000..1f5321050 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/rfkill.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43 wireless driver + RFKILL support + + Copyright (c) 2007 Michael Buesch <m@bues.ch> + + +*/ + +#include "radio.h" +#include "b43legacy.h" + + +/* Returns TRUE, if the radio is enabled in hardware. */ +bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev) +{ + if (dev->dev->id.revision >= 3) { + if (!(b43legacy_read32(dev, B43legacy_MMIO_RADIO_HWENABLED_HI) + & B43legacy_MMIO_RADIO_HWENABLED_HI_MASK)) + return true; + } else { + /* To prevent CPU fault on PPC, do not read a register + * unless the interface is started; however, on resume + * for hibernation, this routine is entered early. When + * that happens, unconditionally return TRUE. + */ + if (b43legacy_status(dev) < B43legacy_STAT_STARTED) + return true; + if (b43legacy_read16(dev, B43legacy_MMIO_RADIO_HWENABLED_LO) + & B43legacy_MMIO_RADIO_HWENABLED_LO_MASK) + return true; + } + return false; +} + +/* The poll callback for the hardware button. */ +void b43legacy_rfkill_poll(struct ieee80211_hw *hw) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev = wl->current_dev; + struct ssb_bus *bus = dev->dev->bus; + bool enabled; + bool brought_up = false; + + mutex_lock(&wl->mutex); + if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) { + if (ssb_bus_powerup(bus, 0)) { + mutex_unlock(&wl->mutex); + return; + } + ssb_device_enable(dev->dev, 0); + brought_up = true; + } + + enabled = b43legacy_is_hw_radio_enabled(dev); + + if (unlikely(enabled != dev->radio_hw_enable)) { + dev->radio_hw_enable = enabled; + b43legacyinfo(wl, "Radio hardware status changed to %s\n", + enabled ? "ENABLED" : "DISABLED"); + wiphy_rfkill_set_hw_state(hw->wiphy, !enabled); + if (enabled != dev->phy.radio_on) { + if (enabled) + b43legacy_radio_turn_on(dev); + else + b43legacy_radio_turn_off(dev, 0); + } + } + + if (brought_up) { + ssb_device_disable(dev->dev, 0); + ssb_bus_may_powerdown(bus); + } + + mutex_unlock(&wl->mutex); +} diff --git a/drivers/net/wireless/broadcom/b43legacy/rfkill.h b/drivers/net/wireless/broadcom/b43legacy/rfkill.h new file mode 100644 index 000000000..7f314eb81 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/rfkill.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_RFKILL_H_ +#define B43legacy_RFKILL_H_ + +struct ieee80211_hw; +struct b43legacy_wldev; + +void b43legacy_rfkill_poll(struct ieee80211_hw *hw); + +bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev); + +#endif /* B43legacy_RFKILL_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/sysfs.c b/drivers/net/wireless/broadcom/b43legacy/sysfs.c new file mode 100644 index 000000000..eec087ca3 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/sysfs.c @@ -0,0 +1,226 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + SYSFS support routines + + Copyright (c) 2006 Michael Buesch <m@bues.ch> + + +*/ + +#include "sysfs.h" +#include "b43legacy.h" +#include "main.h" +#include "phy.h" +#include "radio.h" + +#include <linux/capability.h> + + +#define GENERIC_FILESIZE 64 + + +static int get_integer(const char *buf, size_t count) +{ + char tmp[10 + 1] = { 0 }; + int ret = -EINVAL, res; + + if (count == 0) + goto out; + count = min_t(size_t, count, 10); + memcpy(tmp, buf, count); + ret = kstrtoint(tmp, 10, &res); + if (!ret) + return res; +out: + return ret; +} + +static int get_boolean(const char *buf, size_t count) +{ + if (count != 0) { + if (buf[0] == '1') + return 1; + if (buf[0] == '0') + return 0; + if (count >= 4 && memcmp(buf, "true", 4) == 0) + return 1; + if (count >= 5 && memcmp(buf, "false", 5) == 0) + return 0; + if (count >= 3 && memcmp(buf, "yes", 3) == 0) + return 1; + if (count >= 2 && memcmp(buf, "no", 2) == 0) + return 0; + if (count >= 2 && memcmp(buf, "on", 2) == 0) + return 1; + if (count >= 3 && memcmp(buf, "off", 3) == 0) + return 0; + } + return -EINVAL; +} + +static ssize_t b43legacy_attr_interfmode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); + ssize_t count = 0; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + mutex_lock(&wldev->wl->mutex); + + switch (wldev->phy.interfmode) { + case B43legacy_INTERFMODE_NONE: + count = snprintf(buf, PAGE_SIZE, "0 (No Interference" + " Mitigation)\n"); + break; + case B43legacy_INTERFMODE_NONWLAN: + count = snprintf(buf, PAGE_SIZE, "1 (Non-WLAN Interference" + " Mitigation)\n"); + break; + case B43legacy_INTERFMODE_MANUALWLAN: + count = snprintf(buf, PAGE_SIZE, "2 (WLAN Interference" + " Mitigation)\n"); + break; + default: + B43legacy_WARN_ON(1); + } + + mutex_unlock(&wldev->wl->mutex); + + return count; +} + +static ssize_t b43legacy_attr_interfmode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); + unsigned long flags; + int err; + int mode; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + mode = get_integer(buf, count); + switch (mode) { + case 0: + mode = B43legacy_INTERFMODE_NONE; + break; + case 1: + mode = B43legacy_INTERFMODE_NONWLAN; + break; + case 2: + mode = B43legacy_INTERFMODE_MANUALWLAN; + break; + case 3: + mode = B43legacy_INTERFMODE_AUTOWLAN; + break; + default: + return -EINVAL; + } + + mutex_lock(&wldev->wl->mutex); + spin_lock_irqsave(&wldev->wl->irq_lock, flags); + + err = b43legacy_radio_set_interference_mitigation(wldev, mode); + if (err) + b43legacyerr(wldev->wl, "Interference Mitigation not " + "supported by device\n"); + spin_unlock_irqrestore(&wldev->wl->irq_lock, flags); + mutex_unlock(&wldev->wl->mutex); + + return err ? err : count; +} + +static DEVICE_ATTR(interference, 0644, + b43legacy_attr_interfmode_show, + b43legacy_attr_interfmode_store); + +static ssize_t b43legacy_attr_preamble_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); + ssize_t count; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + mutex_lock(&wldev->wl->mutex); + + if (wldev->short_preamble) + count = snprintf(buf, PAGE_SIZE, "1 (Short Preamble" + " enabled)\n"); + else + count = snprintf(buf, PAGE_SIZE, "0 (Short Preamble" + " disabled)\n"); + + mutex_unlock(&wldev->wl->mutex); + + return count; +} + +static ssize_t b43legacy_attr_preamble_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); + unsigned long flags; + int value; + + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + + value = get_boolean(buf, count); + if (value < 0) + return value; + mutex_lock(&wldev->wl->mutex); + spin_lock_irqsave(&wldev->wl->irq_lock, flags); + + wldev->short_preamble = !!value; + + spin_unlock_irqrestore(&wldev->wl->irq_lock, flags); + mutex_unlock(&wldev->wl->mutex); + + return count; +} + +static DEVICE_ATTR(shortpreamble, 0644, + b43legacy_attr_preamble_show, + b43legacy_attr_preamble_store); + +int b43legacy_sysfs_register(struct b43legacy_wldev *wldev) +{ + struct device *dev = wldev->dev->dev; + int err; + + B43legacy_WARN_ON(b43legacy_status(wldev) != + B43legacy_STAT_INITIALIZED); + + err = device_create_file(dev, &dev_attr_interference); + if (err) + goto out; + err = device_create_file(dev, &dev_attr_shortpreamble); + if (err) + goto err_remove_interfmode; + +out: + return err; +err_remove_interfmode: + device_remove_file(dev, &dev_attr_interference); + goto out; +} + +void b43legacy_sysfs_unregister(struct b43legacy_wldev *wldev) +{ + struct device *dev = wldev->dev->dev; + + device_remove_file(dev, &dev_attr_shortpreamble); + device_remove_file(dev, &dev_attr_interference); +} diff --git a/drivers/net/wireless/broadcom/b43legacy/sysfs.h b/drivers/net/wireless/broadcom/b43legacy/sysfs.h new file mode 100644 index 000000000..ea9d783e6 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/sysfs.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_SYSFS_H_ +#define B43legacy_SYSFS_H_ + +struct b43legacy_wldev; + +int b43legacy_sysfs_register(struct b43legacy_wldev *dev); +void b43legacy_sysfs_unregister(struct b43legacy_wldev *dev); + +#endif /* B43legacy_SYSFS_H_ */ diff --git a/drivers/net/wireless/broadcom/b43legacy/xmit.c b/drivers/net/wireless/broadcom/b43legacy/xmit.c new file mode 100644 index 000000000..efd63f4ce --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/xmit.c @@ -0,0 +1,652 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + + Broadcom B43legacy wireless driver + + Transmission (TX/RX) related functions. + + Copyright (C) 2005 Martin Langer <martin-langer@gmx.de> + Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it> + Copyright (C) 2005, 2006 Michael Buesch <m@bues.ch> + Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org> + Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> + Copyright (C) 2007 Larry Finger <Larry.Finger@lwfinger.net> + + +*/ + +#include <net/dst.h> + +#include "xmit.h" +#include "phy.h" +#include "dma.h" +#include "pio.h" + + +/* Extract the bitrate out of a CCK PLCP header. */ +static u8 b43legacy_plcp_get_bitrate_idx_cck(struct b43legacy_plcp_hdr6 *plcp) +{ + switch (plcp->raw[0]) { + case 0x0A: + return 0; + case 0x14: + return 1; + case 0x37: + return 2; + case 0x6E: + return 3; + } + B43legacy_BUG_ON(1); + return -1; +} + +/* Extract the bitrate out of an OFDM PLCP header. */ +static u8 b43legacy_plcp_get_bitrate_idx_ofdm(struct b43legacy_plcp_hdr6 *plcp, + bool aphy) +{ + int base = aphy ? 0 : 4; + + switch (plcp->raw[0] & 0xF) { + case 0xB: + return base + 0; + case 0xF: + return base + 1; + case 0xA: + return base + 2; + case 0xE: + return base + 3; + case 0x9: + return base + 4; + case 0xD: + return base + 5; + case 0x8: + return base + 6; + case 0xC: + return base + 7; + } + B43legacy_BUG_ON(1); + return -1; +} + +u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate) +{ + switch (bitrate) { + case B43legacy_CCK_RATE_1MB: + return 0x0A; + case B43legacy_CCK_RATE_2MB: + return 0x14; + case B43legacy_CCK_RATE_5MB: + return 0x37; + case B43legacy_CCK_RATE_11MB: + return 0x6E; + } + B43legacy_BUG_ON(1); + return 0; +} + +u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate) +{ + switch (bitrate) { + case B43legacy_OFDM_RATE_6MB: + return 0xB; + case B43legacy_OFDM_RATE_9MB: + return 0xF; + case B43legacy_OFDM_RATE_12MB: + return 0xA; + case B43legacy_OFDM_RATE_18MB: + return 0xE; + case B43legacy_OFDM_RATE_24MB: + return 0x9; + case B43legacy_OFDM_RATE_36MB: + return 0xD; + case B43legacy_OFDM_RATE_48MB: + return 0x8; + case B43legacy_OFDM_RATE_54MB: + return 0xC; + } + B43legacy_BUG_ON(1); + return 0; +} + +void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp, + const u16 octets, const u8 bitrate) +{ + __le32 *data = &(plcp->data); + __u8 *raw = plcp->raw; + + if (b43legacy_is_ofdm_rate(bitrate)) { + u16 d; + + d = b43legacy_plcp_get_ratecode_ofdm(bitrate); + B43legacy_WARN_ON(octets & 0xF000); + d |= (octets << 5); + *data = cpu_to_le32(d); + } else { + u32 plen; + + plen = octets * 16 / bitrate; + if ((octets * 16 % bitrate) > 0) { + plen++; + if ((bitrate == B43legacy_CCK_RATE_11MB) + && ((octets * 8 % 11) < 4)) + raw[1] = 0x84; + else + raw[1] = 0x04; + } else + raw[1] = 0x04; + *data |= cpu_to_le32(plen << 16); + raw[0] = b43legacy_plcp_get_ratecode_cck(bitrate); + } +} + +static u8 b43legacy_calc_fallback_rate(u8 bitrate) +{ + switch (bitrate) { + case B43legacy_CCK_RATE_1MB: + return B43legacy_CCK_RATE_1MB; + case B43legacy_CCK_RATE_2MB: + return B43legacy_CCK_RATE_1MB; + case B43legacy_CCK_RATE_5MB: + return B43legacy_CCK_RATE_2MB; + case B43legacy_CCK_RATE_11MB: + return B43legacy_CCK_RATE_5MB; + case B43legacy_OFDM_RATE_6MB: + return B43legacy_CCK_RATE_5MB; + case B43legacy_OFDM_RATE_9MB: + return B43legacy_OFDM_RATE_6MB; + case B43legacy_OFDM_RATE_12MB: + return B43legacy_OFDM_RATE_9MB; + case B43legacy_OFDM_RATE_18MB: + return B43legacy_OFDM_RATE_12MB; + case B43legacy_OFDM_RATE_24MB: + return B43legacy_OFDM_RATE_18MB; + case B43legacy_OFDM_RATE_36MB: + return B43legacy_OFDM_RATE_24MB; + case B43legacy_OFDM_RATE_48MB: + return B43legacy_OFDM_RATE_36MB; + case B43legacy_OFDM_RATE_54MB: + return B43legacy_OFDM_RATE_48MB; + } + B43legacy_BUG_ON(1); + return 0; +} + +static int generate_txhdr_fw3(struct b43legacy_wldev *dev, + struct b43legacy_txhdr_fw3 *txhdr, + const unsigned char *fragment_data, + unsigned int fragment_len, + struct ieee80211_tx_info *info, + u16 cookie) +{ + const struct ieee80211_hdr *wlhdr; + int use_encryption = !!info->control.hw_key; + u8 rate; + struct ieee80211_rate *rate_fb; + int rate_ofdm; + int rate_fb_ofdm; + unsigned int plcp_fragment_len; + u32 mac_ctl = 0; + u16 phy_ctl = 0; + struct ieee80211_rate *tx_rate; + struct ieee80211_tx_rate *rates; + + wlhdr = (const struct ieee80211_hdr *)fragment_data; + + memset(txhdr, 0, sizeof(*txhdr)); + + tx_rate = ieee80211_get_tx_rate(dev->wl->hw, info); + + rate = tx_rate->hw_value; + rate_ofdm = b43legacy_is_ofdm_rate(rate); + rate_fb = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : tx_rate; + rate_fb_ofdm = b43legacy_is_ofdm_rate(rate_fb->hw_value); + + txhdr->mac_frame_ctl = wlhdr->frame_control; + memcpy(txhdr->tx_receiver, wlhdr->addr1, ETH_ALEN); + + /* Calculate duration for fallback rate */ + if ((rate_fb->hw_value == rate) || + (wlhdr->duration_id & cpu_to_le16(0x8000)) || + (wlhdr->duration_id == cpu_to_le16(0))) { + /* If the fallback rate equals the normal rate or the + * dur_id field contains an AID, CFP magic or 0, + * use the original dur_id field. */ + txhdr->dur_fb = wlhdr->duration_id; + } else { + txhdr->dur_fb = ieee80211_generic_frame_duration(dev->wl->hw, + info->control.vif, + info->band, + fragment_len, + rate_fb); + } + + plcp_fragment_len = fragment_len + FCS_LEN; + if (use_encryption) { + u8 key_idx = info->control.hw_key->hw_key_idx; + struct b43legacy_key *key; + int wlhdr_len; + size_t iv_len; + + B43legacy_WARN_ON(key_idx >= dev->max_nr_keys); + key = &(dev->key[key_idx]); + + if (key->enabled) { + /* Hardware appends ICV. */ + plcp_fragment_len += info->control.hw_key->icv_len; + + key_idx = b43legacy_kidx_to_fw(dev, key_idx); + mac_ctl |= (key_idx << B43legacy_TX4_MAC_KEYIDX_SHIFT) & + B43legacy_TX4_MAC_KEYIDX; + mac_ctl |= (key->algorithm << + B43legacy_TX4_MAC_KEYALG_SHIFT) & + B43legacy_TX4_MAC_KEYALG; + wlhdr_len = ieee80211_hdrlen(wlhdr->frame_control); + iv_len = min_t(size_t, info->control.hw_key->iv_len, + ARRAY_SIZE(txhdr->iv)); + memcpy(txhdr->iv, ((u8 *)wlhdr) + wlhdr_len, iv_len); + } else { + /* This key is invalid. This might only happen + * in a short timeframe after machine resume before + * we were able to reconfigure keys. + * Drop this packet completely. Do not transmit it + * unencrypted to avoid leaking information. */ + return -ENOKEY; + } + } + b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *) + (&txhdr->plcp), plcp_fragment_len, + rate); + b43legacy_generate_plcp_hdr(&txhdr->plcp_fb, plcp_fragment_len, + rate_fb->hw_value); + + /* PHY TX Control word */ + if (rate_ofdm) + phy_ctl |= B43legacy_TX4_PHY_ENC_OFDM; + if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) + phy_ctl |= B43legacy_TX4_PHY_SHORTPRMBL; + phy_ctl |= B43legacy_TX4_PHY_ANTLAST; + + /* MAC control */ + rates = info->control.rates; + if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) + mac_ctl |= B43legacy_TX4_MAC_ACK; + if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) + mac_ctl |= B43legacy_TX4_MAC_HWSEQ; + if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) + mac_ctl |= B43legacy_TX4_MAC_STMSDU; + if (rate_fb_ofdm) + mac_ctl |= B43legacy_TX4_MAC_FALLBACKOFDM; + + /* Overwrite rates[0].count to make the retry calculation + * in the tx status easier. need the actual retry limit to + * detect whether the fallback rate was used. + */ + if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || + (rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) { + rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count; + mac_ctl |= B43legacy_TX4_MAC_LONGFRAME; + } else { + rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count; + } + + /* Generate the RTS or CTS-to-self frame */ + if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || + (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) { + unsigned int len; + struct ieee80211_hdr *hdr; + int rts_rate; + int rts_rate_fb; + int rts_rate_fb_ofdm; + + rts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info)->hw_value; + rts_rate_fb = b43legacy_calc_fallback_rate(rts_rate); + rts_rate_fb_ofdm = b43legacy_is_ofdm_rate(rts_rate_fb); + if (rts_rate_fb_ofdm) + mac_ctl |= B43legacy_TX4_MAC_CTSFALLBACKOFDM; + + if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { + ieee80211_ctstoself_get(dev->wl->hw, + info->control.vif, + fragment_data, + fragment_len, info, + (struct ieee80211_cts *) + (txhdr->rts_frame)); + mac_ctl |= B43legacy_TX4_MAC_SENDCTS; + len = sizeof(struct ieee80211_cts); + } else { + ieee80211_rts_get(dev->wl->hw, + info->control.vif, + fragment_data, fragment_len, info, + (struct ieee80211_rts *) + (txhdr->rts_frame)); + mac_ctl |= B43legacy_TX4_MAC_SENDRTS; + len = sizeof(struct ieee80211_rts); + } + len += FCS_LEN; + b43legacy_generate_plcp_hdr((struct b43legacy_plcp_hdr4 *) + (&txhdr->rts_plcp), + len, rts_rate); + b43legacy_generate_plcp_hdr(&txhdr->rts_plcp_fb, + len, rts_rate_fb); + hdr = (struct ieee80211_hdr *)(&txhdr->rts_frame); + txhdr->rts_dur_fb = hdr->duration_id; + } + + /* Magic cookie */ + txhdr->cookie = cpu_to_le16(cookie); + + /* Apply the bitfields */ + txhdr->mac_ctl = cpu_to_le32(mac_ctl); + txhdr->phy_ctl = cpu_to_le16(phy_ctl); + + return 0; +} + +int b43legacy_generate_txhdr(struct b43legacy_wldev *dev, + u8 *txhdr, + const unsigned char *fragment_data, + unsigned int fragment_len, + struct ieee80211_tx_info *info, + u16 cookie) +{ + return generate_txhdr_fw3(dev, (struct b43legacy_txhdr_fw3 *)txhdr, + fragment_data, fragment_len, + info, cookie); +} + +static s8 b43legacy_rssi_postprocess(struct b43legacy_wldev *dev, + u8 in_rssi, int ofdm, + int adjust_2053, int adjust_2050) +{ + struct b43legacy_phy *phy = &dev->phy; + s32 tmp; + + switch (phy->radio_ver) { + case 0x2050: + if (ofdm) { + tmp = in_rssi; + if (tmp > 127) + tmp -= 256; + tmp *= 73; + tmp /= 64; + if (adjust_2050) + tmp += 25; + else + tmp -= 3; + } else { + if (dev->dev->bus->sprom.boardflags_lo + & B43legacy_BFL_RSSI) { + if (in_rssi > 63) + in_rssi = 63; + tmp = phy->nrssi_lt[in_rssi]; + tmp = 31 - tmp; + tmp *= -131; + tmp /= 128; + tmp -= 57; + } else { + tmp = in_rssi; + tmp = 31 - tmp; + tmp *= -149; + tmp /= 128; + tmp -= 68; + } + if (phy->type == B43legacy_PHYTYPE_G && + adjust_2050) + tmp += 25; + } + break; + case 0x2060: + if (in_rssi > 127) + tmp = in_rssi - 256; + else + tmp = in_rssi; + break; + default: + tmp = in_rssi; + tmp -= 11; + tmp *= 103; + tmp /= 64; + if (adjust_2053) + tmp -= 109; + else + tmp -= 83; + } + + return (s8)tmp; +} + +void b43legacy_rx(struct b43legacy_wldev *dev, + struct sk_buff *skb, + const void *_rxhdr) +{ + struct ieee80211_rx_status status; + struct b43legacy_plcp_hdr6 *plcp; + struct ieee80211_hdr *wlhdr; + const struct b43legacy_rxhdr_fw3 *rxhdr = _rxhdr; + __le16 fctl; + u16 phystat0; + u16 phystat3; + u16 chanstat; + u16 mactime; + u32 macstat; + u16 chanid; + u8 jssi; + int padding; + + memset(&status, 0, sizeof(status)); + + /* Get metadata about the frame from the header. */ + phystat0 = le16_to_cpu(rxhdr->phy_status0); + phystat3 = le16_to_cpu(rxhdr->phy_status3); + jssi = rxhdr->jssi; + macstat = le16_to_cpu(rxhdr->mac_status); + mactime = le16_to_cpu(rxhdr->mac_time); + chanstat = le16_to_cpu(rxhdr->channel); + + if (macstat & B43legacy_RX_MAC_FCSERR) + dev->wl->ieee_stats.dot11FCSErrorCount++; + + /* Skip PLCP and padding */ + padding = (macstat & B43legacy_RX_MAC_PADDING) ? 2 : 0; + if (unlikely(skb->len < (sizeof(struct b43legacy_plcp_hdr6) + + padding))) { + b43legacydbg(dev->wl, "RX: Packet size underrun (1)\n"); + goto drop; + } + plcp = (struct b43legacy_plcp_hdr6 *)(skb->data + padding); + skb_pull(skb, sizeof(struct b43legacy_plcp_hdr6) + padding); + /* The skb contains the Wireless Header + payload data now */ + if (unlikely(skb->len < (2+2+6/*minimum hdr*/ + FCS_LEN))) { + b43legacydbg(dev->wl, "RX: Packet size underrun (2)\n"); + goto drop; + } + wlhdr = (struct ieee80211_hdr *)(skb->data); + fctl = wlhdr->frame_control; + + if ((macstat & B43legacy_RX_MAC_DEC) && + !(macstat & B43legacy_RX_MAC_DECERR)) { + unsigned int keyidx; + int wlhdr_len; + int iv_len; + int icv_len; + + keyidx = ((macstat & B43legacy_RX_MAC_KEYIDX) + >> B43legacy_RX_MAC_KEYIDX_SHIFT); + /* We must adjust the key index here. We want the "physical" + * key index, but the ucode passed it slightly different. + */ + keyidx = b43legacy_kidx_to_raw(dev, keyidx); + B43legacy_WARN_ON(keyidx >= dev->max_nr_keys); + + if (dev->key[keyidx].algorithm != B43legacy_SEC_ALGO_NONE) { + /* Remove PROTECTED flag to mark it as decrypted. */ + B43legacy_WARN_ON(!ieee80211_has_protected(fctl)); + fctl &= ~cpu_to_le16(IEEE80211_FCTL_PROTECTED); + wlhdr->frame_control = fctl; + + wlhdr_len = ieee80211_hdrlen(fctl); + if (unlikely(skb->len < (wlhdr_len + 3))) { + b43legacydbg(dev->wl, "RX: Packet size" + " underrun3\n"); + goto drop; + } + if (skb->data[wlhdr_len + 3] & (1 << 5)) { + /* The Ext-IV Bit is set in the "KeyID" + * octet of the IV. + */ + iv_len = 8; + icv_len = 8; + } else { + iv_len = 4; + icv_len = 4; + } + if (unlikely(skb->len < (wlhdr_len + iv_len + + icv_len))) { + b43legacydbg(dev->wl, "RX: Packet size" + " underrun4\n"); + goto drop; + } + /* Remove the IV */ + memmove(skb->data + iv_len, skb->data, wlhdr_len); + skb_pull(skb, iv_len); + /* Remove the ICV */ + skb_trim(skb, skb->len - icv_len); + + status.flag |= RX_FLAG_DECRYPTED; + } + } + + status.signal = b43legacy_rssi_postprocess(dev, jssi, + (phystat0 & B43legacy_RX_PHYST0_OFDM), + (phystat0 & B43legacy_RX_PHYST0_GAINCTL), + (phystat3 & B43legacy_RX_PHYST3_TRSTATE)); + /* change to support A PHY */ + if (phystat0 & B43legacy_RX_PHYST0_OFDM) + status.rate_idx = b43legacy_plcp_get_bitrate_idx_ofdm(plcp, false); + else + status.rate_idx = b43legacy_plcp_get_bitrate_idx_cck(plcp); + status.antenna = !!(phystat0 & B43legacy_RX_PHYST0_ANT); + + /* + * All frames on monitor interfaces and beacons always need a full + * 64-bit timestamp. Monitor interfaces need it for diagnostic + * purposes and beacons for IBSS merging. + * This code assumes we get to process the packet within 16 bits + * of timestamp, i.e. about 65 milliseconds after the PHY received + * the first symbol. + */ + if (ieee80211_is_beacon(fctl) || dev->wl->radiotap_enabled) { + u16 low_mactime_now; + + b43legacy_tsf_read(dev, &status.mactime); + low_mactime_now = status.mactime; + status.mactime = status.mactime & ~0xFFFFULL; + status.mactime += mactime; + if (low_mactime_now <= mactime) + status.mactime -= 0x10000; + status.flag |= RX_FLAG_MACTIME_START; + } + + chanid = (chanstat & B43legacy_RX_CHAN_ID) >> + B43legacy_RX_CHAN_ID_SHIFT; + switch (chanstat & B43legacy_RX_CHAN_PHYTYPE) { + case B43legacy_PHYTYPE_B: + case B43legacy_PHYTYPE_G: + status.band = NL80211_BAND_2GHZ; + status.freq = chanid + 2400; + break; + default: + b43legacywarn(dev->wl, "Unexpected value for chanstat (0x%X)\n", + chanstat); + goto drop; + } + + memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); + ieee80211_rx_irqsafe(dev->wl->hw, skb); + + return; +drop: + b43legacydbg(dev->wl, "RX: Packet dropped\n"); + dev_kfree_skb_any(skb); +} + +void b43legacy_handle_txstatus(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status) +{ + b43legacy_debugfs_log_txstat(dev, status); + + if (status->intermediate) + return; + if (status->for_ampdu) + return; + if (!status->acked) + dev->wl->ieee_stats.dot11ACKFailureCount++; + if (status->rts_count) { + if (status->rts_count == 0xF) /* FIXME */ + dev->wl->ieee_stats.dot11RTSFailureCount++; + else + dev->wl->ieee_stats.dot11RTSSuccessCount++; + } + + if (b43legacy_using_pio(dev)) + b43legacy_pio_handle_txstatus(dev, status); + else + b43legacy_dma_handle_txstatus(dev, status); +} + +/* Handle TX status report as received through DMA/PIO queues */ +void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev, + const struct b43legacy_hwtxstatus *hw) +{ + struct b43legacy_txstatus status; + u8 tmp; + + status.cookie = le16_to_cpu(hw->cookie); + status.seq = le16_to_cpu(hw->seq); + status.phy_stat = hw->phy_stat; + tmp = hw->count; + status.frame_count = (tmp >> 4); + status.rts_count = (tmp & 0x0F); + tmp = hw->flags << 1; + status.supp_reason = ((tmp & 0x1C) >> 2); + status.pm_indicated = !!(tmp & 0x80); + status.intermediate = !!(tmp & 0x40); + status.for_ampdu = !!(tmp & 0x20); + status.acked = !!(tmp & 0x02); + + b43legacy_handle_txstatus(dev, &status); +} + +/* Stop any TX operation on the device (suspend the hardware queues) */ +void b43legacy_tx_suspend(struct b43legacy_wldev *dev) +{ + if (b43legacy_using_pio(dev)) + b43legacy_pio_freeze_txqueues(dev); + else + b43legacy_dma_tx_suspend(dev); +} + +/* Resume any TX operation on the device (resume the hardware queues) */ +void b43legacy_tx_resume(struct b43legacy_wldev *dev) +{ + if (b43legacy_using_pio(dev)) + b43legacy_pio_thaw_txqueues(dev); + else + b43legacy_dma_tx_resume(dev); +} + +/* Initialize the QoS parameters */ +void b43legacy_qos_init(struct b43legacy_wldev *dev) +{ + /* FIXME: This function must probably be called from the mac80211 + * config callback. */ +return; + + b43legacy_hf_write(dev, b43legacy_hf_read(dev) | B43legacy_HF_EDCF); + /* FIXME kill magic */ + b43legacy_write16(dev, 0x688, + b43legacy_read16(dev, 0x688) | 0x4); + + + /*TODO: We might need some stack support here to get the values. */ +} diff --git a/drivers/net/wireless/broadcom/b43legacy/xmit.h b/drivers/net/wireless/broadcom/b43legacy/xmit.h new file mode 100644 index 000000000..e4ef869f0 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/xmit.h @@ -0,0 +1,262 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef B43legacy_XMIT_H_ +#define B43legacy_XMIT_H_ + +#include "main.h" + + +#define _b43legacy_declare_plcp_hdr(size) \ + struct b43legacy_plcp_hdr##size { \ + union { \ + __le32 data; \ + __u8 raw[size]; \ + } __packed; \ + } __packed + +/* struct b43legacy_plcp_hdr4 */ +_b43legacy_declare_plcp_hdr(4); +/* struct b43legacy_plcp_hdr6 */ +_b43legacy_declare_plcp_hdr(6); + +#undef _b43legacy_declare_plcp_hdr + + +/* TX header for v3 firmware */ +struct b43legacy_txhdr_fw3 { + __le32 mac_ctl; /* MAC TX control */ + __le16 mac_frame_ctl; /* Copy of the FrameControl */ + __le16 tx_fes_time_norm; /* TX FES Time Normal */ + __le16 phy_ctl; /* PHY TX control */ + __u8 iv[16]; /* Encryption IV */ + __u8 tx_receiver[6]; /* TX Frame Receiver address */ + __le16 tx_fes_time_fb; /* TX FES Time Fallback */ + struct b43legacy_plcp_hdr4 rts_plcp_fb; /* RTS fallback PLCP */ + __le16 rts_dur_fb; /* RTS fallback duration */ + struct b43legacy_plcp_hdr4 plcp_fb; /* Fallback PLCP */ + __le16 dur_fb; /* Fallback duration */ + PAD_BYTES(2); + __le16 cookie; + __le16 unknown_scb_stuff; + struct b43legacy_plcp_hdr6 rts_plcp; /* RTS PLCP */ + __u8 rts_frame[18]; /* The RTS frame (if used) */ + struct b43legacy_plcp_hdr6 plcp; +} __packed; + +/* MAC TX control */ +#define B43legacy_TX4_MAC_KEYIDX 0x0FF00000 /* Security key index */ +#define B43legacy_TX4_MAC_KEYIDX_SHIFT 20 +#define B43legacy_TX4_MAC_KEYALG 0x00070000 /* Security key algorithm */ +#define B43legacy_TX4_MAC_KEYALG_SHIFT 16 +#define B43legacy_TX4_MAC_LIFETIME 0x00001000 +#define B43legacy_TX4_MAC_FRAMEBURST 0x00000800 +#define B43legacy_TX4_MAC_SENDCTS 0x00000400 +#define B43legacy_TX4_MAC_AMPDU 0x00000300 +#define B43legacy_TX4_MAC_AMPDU_SHIFT 8 +#define B43legacy_TX4_MAC_CTSFALLBACKOFDM 0x00000200 +#define B43legacy_TX4_MAC_FALLBACKOFDM 0x00000100 +#define B43legacy_TX4_MAC_5GHZ 0x00000080 +#define B43legacy_TX4_MAC_IGNPMQ 0x00000020 +#define B43legacy_TX4_MAC_HWSEQ 0x00000010 /* Use Hardware Seq No */ +#define B43legacy_TX4_MAC_STMSDU 0x00000008 /* Start MSDU */ +#define B43legacy_TX4_MAC_SENDRTS 0x00000004 +#define B43legacy_TX4_MAC_LONGFRAME 0x00000002 +#define B43legacy_TX4_MAC_ACK 0x00000001 + +/* Extra Frame Types */ +#define B43legacy_TX4_EFT_FBOFDM 0x0001 /* Data frame fb rate type */ +#define B43legacy_TX4_EFT_RTSOFDM 0x0004 /* RTS/CTS rate type */ +#define B43legacy_TX4_EFT_RTSFBOFDM 0x0010 /* RTS/CTS fallback rate type */ + +/* PHY TX control word */ +#define B43legacy_TX4_PHY_ENC 0x0003 /* Data frame encoding */ +#define B43legacy_TX4_PHY_ENC_CCK 0x0000 /* CCK */ +#define B43legacy_TX4_PHY_ENC_OFDM 0x0001 /* Data frame rate type */ +#define B43legacy_TX4_PHY_SHORTPRMBL 0x0010 /* Use short preamble */ +#define B43legacy_TX4_PHY_ANT 0x03C0 /* Antenna selection */ +#define B43legacy_TX4_PHY_ANT0 0x0000 /* Use antenna 0 */ +#define B43legacy_TX4_PHY_ANT1 0x0100 /* Use antenna 1 */ +#define B43legacy_TX4_PHY_ANTLAST 0x0300 /* Use last used antenna */ + + + +int b43legacy_generate_txhdr(struct b43legacy_wldev *dev, + u8 *txhdr, + const unsigned char *fragment_data, + unsigned int fragment_len, + struct ieee80211_tx_info *info, + u16 cookie); + + +/* Transmit Status */ +struct b43legacy_txstatus { + u16 cookie; /* The cookie from the txhdr */ + u16 seq; /* Sequence number */ + u8 phy_stat; /* PHY TX status */ + u8 frame_count; /* Frame transmit count */ + u8 rts_count; /* RTS transmit count */ + u8 supp_reason; /* Suppression reason */ + /* flags */ + u8 pm_indicated;/* PM mode indicated to AP */ + u8 intermediate;/* Intermediate status notification */ + u8 for_ampdu; /* Status is for an AMPDU (afterburner) */ + u8 acked; /* Wireless ACK received */ +}; + +/* txstatus supp_reason values */ +enum { + B43legacy_TXST_SUPP_NONE, /* Not suppressed */ + B43legacy_TXST_SUPP_PMQ, /* Suppressed due to PMQ entry */ + B43legacy_TXST_SUPP_FLUSH, /* Suppressed due to flush request */ + B43legacy_TXST_SUPP_PREV, /* Previous fragment failed */ + B43legacy_TXST_SUPP_CHAN, /* Channel mismatch */ + B43legacy_TXST_SUPP_LIFE, /* Lifetime expired */ + B43legacy_TXST_SUPP_UNDER, /* Buffer underflow */ + B43legacy_TXST_SUPP_ABNACK, /* Afterburner NACK */ +}; + +/* Transmit Status as received through DMA/PIO on old chips */ +struct b43legacy_hwtxstatus { + PAD_BYTES(4); + __le16 cookie; + u8 flags; + u8 count; + PAD_BYTES(2); + __le16 seq; + u8 phy_stat; + PAD_BYTES(1); +} __packed; + + +/* Receive header for v3 firmware. */ +struct b43legacy_rxhdr_fw3 { + __le16 frame_len; /* Frame length */ + PAD_BYTES(2); + __le16 phy_status0; /* PHY RX Status 0 */ + __u8 jssi; /* PHY RX Status 1: JSSI */ + __u8 sig_qual; /* PHY RX Status 1: Signal Quality */ + PAD_BYTES(2); /* PHY RX Status 2 */ + __le16 phy_status3; /* PHY RX Status 3 */ + __le16 mac_status; /* MAC RX status */ + __le16 mac_time; + __le16 channel; +} __packed; + + +/* PHY RX Status 0 */ +#define B43legacy_RX_PHYST0_GAINCTL 0x4000 /* Gain Control */ +#define B43legacy_RX_PHYST0_PLCPHCF 0x0200 +#define B43legacy_RX_PHYST0_PLCPFV 0x0100 +#define B43legacy_RX_PHYST0_SHORTPRMBL 0x0080 /* Recvd with Short Preamble */ +#define B43legacy_RX_PHYST0_LCRS 0x0040 +#define B43legacy_RX_PHYST0_ANT 0x0020 /* Antenna */ +#define B43legacy_RX_PHYST0_UNSRATE 0x0010 +#define B43legacy_RX_PHYST0_CLIP 0x000C +#define B43legacy_RX_PHYST0_CLIP_SHIFT 2 +#define B43legacy_RX_PHYST0_FTYPE 0x0003 /* Frame type */ +#define B43legacy_RX_PHYST0_CCK 0x0000 /* Frame type: CCK */ +#define B43legacy_RX_PHYST0_OFDM 0x0001 /* Frame type: OFDM */ +#define B43legacy_RX_PHYST0_PRE_N 0x0002 /* Pre-standard N-PHY frame */ +#define B43legacy_RX_PHYST0_STD_N 0x0003 /* Standard N-PHY frame */ + +/* PHY RX Status 2 */ +#define B43legacy_RX_PHYST2_LNAG 0xC000 /* LNA Gain */ +#define B43legacy_RX_PHYST2_LNAG_SHIFT 14 +#define B43legacy_RX_PHYST2_PNAG 0x3C00 /* PNA Gain */ +#define B43legacy_RX_PHYST2_PNAG_SHIFT 10 +#define B43legacy_RX_PHYST2_FOFF 0x03FF /* F offset */ + +/* PHY RX Status 3 */ +#define B43legacy_RX_PHYST3_DIGG 0x1800 /* DIG Gain */ +#define B43legacy_RX_PHYST3_DIGG_SHIFT 11 +#define B43legacy_RX_PHYST3_TRSTATE 0x0400 /* TR state */ + +/* MAC RX Status */ +#define B43legacy_RX_MAC_BEACONSENT 0x00008000 /* Beacon send flag */ +#define B43legacy_RX_MAC_KEYIDX 0x000007E0 /* Key index */ +#define B43legacy_RX_MAC_KEYIDX_SHIFT 5 +#define B43legacy_RX_MAC_DECERR 0x00000010 /* Decrypt error */ +#define B43legacy_RX_MAC_DEC 0x00000008 /* Decryption attempted */ +#define B43legacy_RX_MAC_PADDING 0x00000004 /* Pad bytes present */ +#define B43legacy_RX_MAC_RESP 0x00000002 /* Response frame xmitted */ +#define B43legacy_RX_MAC_FCSERR 0x00000001 /* FCS error */ + +/* RX channel */ +#define B43legacy_RX_CHAN_GAIN 0xFC00 /* Gain */ +#define B43legacy_RX_CHAN_GAIN_SHIFT 10 +#define B43legacy_RX_CHAN_ID 0x03FC /* Channel ID */ +#define B43legacy_RX_CHAN_ID_SHIFT 2 +#define B43legacy_RX_CHAN_PHYTYPE 0x0003 /* PHY type */ + + + +u8 b43legacy_plcp_get_ratecode_cck(const u8 bitrate); +u8 b43legacy_plcp_get_ratecode_ofdm(const u8 bitrate); + +void b43legacy_generate_plcp_hdr(struct b43legacy_plcp_hdr4 *plcp, + const u16 octets, const u8 bitrate); + +void b43legacy_rx(struct b43legacy_wldev *dev, + struct sk_buff *skb, + const void *_rxhdr); + +void b43legacy_handle_txstatus(struct b43legacy_wldev *dev, + const struct b43legacy_txstatus *status); + +void b43legacy_handle_hwtxstatus(struct b43legacy_wldev *dev, + const struct b43legacy_hwtxstatus *hw); + +void b43legacy_tx_suspend(struct b43legacy_wldev *dev); +void b43legacy_tx_resume(struct b43legacy_wldev *dev); + + +#define B43legacy_NR_QOSPARMS 22 +enum { + B43legacy_QOSPARM_TXOP = 0, + B43legacy_QOSPARM_CWMIN, + B43legacy_QOSPARM_CWMAX, + B43legacy_QOSPARM_CWCUR, + B43legacy_QOSPARM_AIFS, + B43legacy_QOSPARM_BSLOTS, + B43legacy_QOSPARM_REGGAP, + B43legacy_QOSPARM_STATUS, +}; + +void b43legacy_qos_init(struct b43legacy_wldev *dev); + + +/* Helper functions for converting the key-table index from "firmware-format" + * to "raw-format" and back. The firmware API changed for this at some revision. + * We need to account for that here. */ +static inline +int b43legacy_new_kidx_api(struct b43legacy_wldev *dev) +{ + /* FIXME: Not sure the change was at rev 351 */ + return (dev->fw.rev >= 351); +} +static inline +u8 b43legacy_kidx_to_fw(struct b43legacy_wldev *dev, u8 raw_kidx) +{ + u8 firmware_kidx; + if (b43legacy_new_kidx_api(dev)) + firmware_kidx = raw_kidx; + else { + if (raw_kidx >= 4) /* Is per STA key? */ + firmware_kidx = raw_kidx - 4; + else + firmware_kidx = raw_kidx; /* TX default key */ + } + return firmware_kidx; +} +static inline +u8 b43legacy_kidx_to_raw(struct b43legacy_wldev *dev, u8 firmware_kidx) +{ + u8 raw_kidx; + if (b43legacy_new_kidx_api(dev)) + raw_kidx = firmware_kidx; + else + /* RX default keys or per STA keys */ + raw_kidx = firmware_kidx + 4; + return raw_kidx; +} + +#endif /* B43legacy_XMIT_H_ */ |