diff options
Diffstat (limited to 'drivers/net/ethernet/sis')
| -rw-r--r-- | drivers/net/ethernet/sis/Kconfig | 50 | ||||
| -rw-r--r-- | drivers/net/ethernet/sis/Makefile | 7 | ||||
| -rw-r--r-- | drivers/net/ethernet/sis/sis190.c | 1944 | ||||
| -rw-r--r-- | drivers/net/ethernet/sis/sis900.c | 2579 | ||||
| -rw-r--r-- | drivers/net/ethernet/sis/sis900.h | 330 |
5 files changed, 4910 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sis/Kconfig b/drivers/net/ethernet/sis/Kconfig new file mode 100644 index 000000000..775d76d98 --- /dev/null +++ b/drivers/net/ethernet/sis/Kconfig @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Silicon Integrated Systems (SiS) device configuration +# + +config NET_VENDOR_SIS + bool "Silicon Integrated Systems (SiS) devices" + default y + depends on PCI + help + If you have a network (Ethernet) card belonging to this class, say Y. + + Note that the answer to this question doesn't directly affect the + kernel: saying N will just cause the configurator to skip all + the questions about SiS devices. If you say Y, you will be asked for + your specific card in the following questions. + +if NET_VENDOR_SIS + +config SIS900 + tristate "SiS 900/7016 PCI Fast Ethernet Adapter support" + depends on PCI + select CRC32 + select MII + help + This is a driver for the Fast Ethernet PCI network cards based on + the SiS 900 and SiS 7016 chips. The SiS 900 core is also embedded in + SiS 630 and SiS 540 chipsets. + + This driver also supports AMD 79C901 HomePNA so that you can use + your phone line as a network cable. + + To compile this driver as a module, choose M here: the module + will be called sis900. This is recommended. + +config SIS190 + tristate "SiS190/SiS191 gigabit ethernet support" + depends on PCI + select CRC32 + select MII + help + Say Y here if you have a SiS 190 PCI Fast Ethernet adapter or + a SiS 191 PCI Gigabit Ethernet adapter. Both are expected to + appear in lan on motherboard designs which are based on SiS 965 + and SiS 966 south bridge. + + To compile this driver as a module, choose M here: the module + will be called sis190. This is recommended. + +endif # NET_VENDOR_SIS diff --git a/drivers/net/ethernet/sis/Makefile b/drivers/net/ethernet/sis/Makefile new file mode 100644 index 000000000..853407bce --- /dev/null +++ b/drivers/net/ethernet/sis/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Makefile for Silicon Integrated Systems (SiS) network device drivers. +# + +obj-$(CONFIG_SIS190) += sis190.o +obj-$(CONFIG_SIS900) += sis900.o diff --git a/drivers/net/ethernet/sis/sis190.c b/drivers/net/ethernet/sis/sis190.c new file mode 100644 index 000000000..676b19383 --- /dev/null +++ b/drivers/net/ethernet/sis/sis190.c @@ -0,0 +1,1944 @@ +/* + sis190.c: Silicon Integrated Systems SiS190 ethernet driver + + Copyright (c) 2003 K.M. Liu <kmliu@sis.com> + Copyright (c) 2003, 2004 Jeff Garzik <jgarzik@pobox.com> + Copyright (c) 2003, 2004, 2005 Francois Romieu <romieu@fr.zoreil.com> + + Based on r8169.c, tg3.c, 8139cp.c, skge.c, epic100.c and SiS 190/191 + genuine driver. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. + + See the file COPYING in this distribution for more information. + +*/ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/netdevice.h> +#include <linux/rtnetlink.h> +#include <linux/etherdevice.h> +#include <linux/ethtool.h> +#include <linux/pci.h> +#include <linux/mii.h> +#include <linux/delay.h> +#include <linux/crc32.h> +#include <linux/dma-mapping.h> +#include <linux/slab.h> +#include <asm/irq.h> + +#define PHY_MAX_ADDR 32 +#define PHY_ID_ANY 0x1f +#define MII_REG_ANY 0x1f + +#define DRV_VERSION "1.4" +#define DRV_NAME "sis190" +#define SIS190_DRIVER_NAME DRV_NAME " Gigabit Ethernet driver " DRV_VERSION + +#define sis190_rx_skb netif_rx +#define sis190_rx_quota(count, quota) count + +#define NUM_TX_DESC 64 /* [8..1024] */ +#define NUM_RX_DESC 64 /* [8..8192] */ +#define TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc)) +#define RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc)) +#define RX_BUF_SIZE 1536 +#define RX_BUF_MASK 0xfff8 + +#define SIS190_REGS_SIZE 0x80 +#define SIS190_TX_TIMEOUT (6*HZ) +#define SIS190_PHY_TIMEOUT (10*HZ) +#define SIS190_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \ + NETIF_MSG_LINK | NETIF_MSG_IFUP | \ + NETIF_MSG_IFDOWN) + +/* Enhanced PHY access register bit definitions */ +#define EhnMIIread 0x0000 +#define EhnMIIwrite 0x0020 +#define EhnMIIdataShift 16 +#define EhnMIIpmdShift 6 /* 7016 only */ +#define EhnMIIregShift 11 +#define EhnMIIreq 0x0010 +#define EhnMIInotDone 0x0010 + +/* Write/read MMIO register */ +#define SIS_W8(reg, val) writeb ((val), ioaddr + (reg)) +#define SIS_W16(reg, val) writew ((val), ioaddr + (reg)) +#define SIS_W32(reg, val) writel ((val), ioaddr + (reg)) +#define SIS_R8(reg) readb (ioaddr + (reg)) +#define SIS_R16(reg) readw (ioaddr + (reg)) +#define SIS_R32(reg) readl (ioaddr + (reg)) + +#define SIS_PCI_COMMIT() SIS_R32(IntrControl) + +enum sis190_registers { + TxControl = 0x00, + TxDescStartAddr = 0x04, + rsv0 = 0x08, // reserved + TxSts = 0x0c, // unused (Control/Status) + RxControl = 0x10, + RxDescStartAddr = 0x14, + rsv1 = 0x18, // reserved + RxSts = 0x1c, // unused + IntrStatus = 0x20, + IntrMask = 0x24, + IntrControl = 0x28, + IntrTimer = 0x2c, // unused (Interrupt Timer) + PMControl = 0x30, // unused (Power Mgmt Control/Status) + rsv2 = 0x34, // reserved + ROMControl = 0x38, + ROMInterface = 0x3c, + StationControl = 0x40, + GMIIControl = 0x44, + GIoCR = 0x48, // unused (GMAC IO Compensation) + GIoCtrl = 0x4c, // unused (GMAC IO Control) + TxMacControl = 0x50, + TxLimit = 0x54, // unused (Tx MAC Timer/TryLimit) + RGDelay = 0x58, // unused (RGMII Tx Internal Delay) + rsv3 = 0x5c, // reserved + RxMacControl = 0x60, + RxMacAddr = 0x62, + RxHashTable = 0x68, + // Undocumented = 0x6c, + RxWolCtrl = 0x70, + RxWolData = 0x74, // unused (Rx WOL Data Access) + RxMPSControl = 0x78, // unused (Rx MPS Control) + rsv4 = 0x7c, // reserved +}; + +enum sis190_register_content { + /* IntrStatus */ + SoftInt = 0x40000000, // unused + Timeup = 0x20000000, // unused + PauseFrame = 0x00080000, // unused + MagicPacket = 0x00040000, // unused + WakeupFrame = 0x00020000, // unused + LinkChange = 0x00010000, + RxQEmpty = 0x00000080, + RxQInt = 0x00000040, + TxQ1Empty = 0x00000020, // unused + TxQ1Int = 0x00000010, + TxQ0Empty = 0x00000008, // unused + TxQ0Int = 0x00000004, + RxHalt = 0x00000002, + TxHalt = 0x00000001, + + /* {Rx/Tx}CmdBits */ + CmdReset = 0x10, + CmdRxEnb = 0x08, // unused + CmdTxEnb = 0x01, + RxBufEmpty = 0x01, // unused + + /* Cfg9346Bits */ + Cfg9346_Lock = 0x00, // unused + Cfg9346_Unlock = 0xc0, // unused + + /* RxMacControl */ + AcceptErr = 0x20, // unused + AcceptRunt = 0x10, // unused + AcceptBroadcast = 0x0800, + AcceptMulticast = 0x0400, + AcceptMyPhys = 0x0200, + AcceptAllPhys = 0x0100, + + /* RxConfigBits */ + RxCfgFIFOShift = 13, + RxCfgDMAShift = 8, // 0x1a in RxControl ? + + /* TxConfigBits */ + TxInterFrameGapShift = 24, + TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */ + + LinkStatus = 0x02, // unused + FullDup = 0x01, // unused + + /* TBICSRBit */ + TBILinkOK = 0x02000000, // unused +}; + +struct TxDesc { + __le32 PSize; + __le32 status; + __le32 addr; + __le32 size; +}; + +struct RxDesc { + __le32 PSize; + __le32 status; + __le32 addr; + __le32 size; +}; + +enum _DescStatusBit { + /* _Desc.status */ + OWNbit = 0x80000000, // RXOWN/TXOWN + INTbit = 0x40000000, // RXINT/TXINT + CRCbit = 0x00020000, // CRCOFF/CRCEN + PADbit = 0x00010000, // PREADD/PADEN + /* _Desc.size */ + RingEnd = 0x80000000, + /* TxDesc.status */ + LSEN = 0x08000000, // TSO ? -- FR + IPCS = 0x04000000, + TCPCS = 0x02000000, + UDPCS = 0x01000000, + BSTEN = 0x00800000, + EXTEN = 0x00400000, + DEFEN = 0x00200000, + BKFEN = 0x00100000, + CRSEN = 0x00080000, + COLEN = 0x00040000, + THOL3 = 0x30000000, + THOL2 = 0x20000000, + THOL1 = 0x10000000, + THOL0 = 0x00000000, + + WND = 0x00080000, + TABRT = 0x00040000, + FIFO = 0x00020000, + LINK = 0x00010000, + ColCountMask = 0x0000ffff, + /* RxDesc.status */ + IPON = 0x20000000, + TCPON = 0x10000000, + UDPON = 0x08000000, + Wakup = 0x00400000, + Magic = 0x00200000, + Pause = 0x00100000, + DEFbit = 0x00200000, + BCAST = 0x000c0000, + MCAST = 0x00080000, + UCAST = 0x00040000, + /* RxDesc.PSize */ + TAGON = 0x80000000, + RxDescCountMask = 0x7f000000, // multi-desc pkt when > 1 ? -- FR + ABORT = 0x00800000, + SHORT = 0x00400000, + LIMIT = 0x00200000, + MIIER = 0x00100000, + OVRUN = 0x00080000, + NIBON = 0x00040000, + COLON = 0x00020000, + CRCOK = 0x00010000, + RxSizeMask = 0x0000ffff + /* + * The asic could apparently do vlan, TSO, jumbo (sis191 only) and + * provide two (unused with Linux) Tx queues. No publicly + * available documentation alas. + */ +}; + +enum sis190_eeprom_access_register_bits { + EECS = 0x00000001, // unused + EECLK = 0x00000002, // unused + EEDO = 0x00000008, // unused + EEDI = 0x00000004, // unused + EEREQ = 0x00000080, + EEROP = 0x00000200, + EEWOP = 0x00000100 // unused +}; + +/* EEPROM Addresses */ +enum sis190_eeprom_address { + EEPROMSignature = 0x00, + EEPROMCLK = 0x01, // unused + EEPROMInfo = 0x02, + EEPROMMACAddr = 0x03 +}; + +enum sis190_feature { + F_HAS_RGMII = 1, + F_PHY_88E1111 = 2, + F_PHY_BCM5461 = 4 +}; + +struct sis190_private { + void __iomem *mmio_addr; + struct pci_dev *pci_dev; + struct net_device *dev; + spinlock_t lock; + u32 rx_buf_sz; + u32 cur_rx; + u32 cur_tx; + u32 dirty_rx; + u32 dirty_tx; + dma_addr_t rx_dma; + dma_addr_t tx_dma; + struct RxDesc *RxDescRing; + struct TxDesc *TxDescRing; + struct sk_buff *Rx_skbuff[NUM_RX_DESC]; + struct sk_buff *Tx_skbuff[NUM_TX_DESC]; + struct work_struct phy_task; + struct timer_list timer; + u32 msg_enable; + struct mii_if_info mii_if; + struct list_head first_phy; + u32 features; + u32 negotiated_lpa; + enum { + LNK_OFF, + LNK_ON, + LNK_AUTONEG, + } link_status; +}; + +struct sis190_phy { + struct list_head list; + int phy_id; + u16 id[2]; + u16 status; + u8 type; +}; + +enum sis190_phy_type { + UNKNOWN = 0x00, + HOME = 0x01, + LAN = 0x02, + MIX = 0x03 +}; + +static struct mii_chip_info { + const char *name; + u16 id[2]; + unsigned int type; + u32 feature; +} mii_chip_table[] = { + { "Atheros PHY", { 0x004d, 0xd010 }, LAN, 0 }, + { "Atheros PHY AR8012", { 0x004d, 0xd020 }, LAN, 0 }, + { "Broadcom PHY BCM5461", { 0x0020, 0x60c0 }, LAN, F_PHY_BCM5461 }, + { "Broadcom PHY AC131", { 0x0143, 0xbc70 }, LAN, 0 }, + { "Agere PHY ET1101B", { 0x0282, 0xf010 }, LAN, 0 }, + { "Marvell PHY 88E1111", { 0x0141, 0x0cc0 }, LAN, F_PHY_88E1111 }, + { "Realtek PHY RTL8201", { 0x0000, 0x8200 }, LAN, 0 }, + { NULL, } +}; + +static const struct { + const char *name; +} sis_chip_info[] = { + { "SiS 190 PCI Fast Ethernet adapter" }, + { "SiS 191 PCI Gigabit Ethernet adapter" }, +}; + +static const struct pci_device_id sis190_pci_tbl[] = { + { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x0190), 0, 0, 0 }, + { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x0191), 0, 0, 1 }, + { 0, }, +}; + +MODULE_DEVICE_TABLE(pci, sis190_pci_tbl); + +static int rx_copybreak = 200; + +static struct { + u32 msg_enable; +} debug = { -1 }; + +MODULE_DESCRIPTION("SiS sis190/191 Gigabit Ethernet driver"); +module_param(rx_copybreak, int, 0); +MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames"); +module_param_named(debug, debug.msg_enable, int, 0); +MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)"); +MODULE_AUTHOR("K.M. Liu <kmliu@sis.com>, Ueimor <romieu@fr.zoreil.com>"); +MODULE_VERSION(DRV_VERSION); +MODULE_LICENSE("GPL"); + +static const u32 sis190_intr_mask = + RxQEmpty | RxQInt | TxQ1Int | TxQ0Int | RxHalt | TxHalt | LinkChange; + +/* + * Maximum number of multicast addresses to filter (vs. Rx-all-multicast). + * The chips use a 64 element hash table based on the Ethernet CRC. + */ +static const int multicast_filter_limit = 32; + +static void __mdio_cmd(void __iomem *ioaddr, u32 ctl) +{ + unsigned int i; + + SIS_W32(GMIIControl, ctl); + + msleep(1); + + for (i = 0; i < 100; i++) { + if (!(SIS_R32(GMIIControl) & EhnMIInotDone)) + break; + msleep(1); + } + + if (i > 99) + pr_err("PHY command failed !\n"); +} + +static void mdio_write(void __iomem *ioaddr, int phy_id, int reg, int val) +{ + __mdio_cmd(ioaddr, EhnMIIreq | EhnMIIwrite | + (((u32) reg) << EhnMIIregShift) | (phy_id << EhnMIIpmdShift) | + (((u32) val) << EhnMIIdataShift)); +} + +static int mdio_read(void __iomem *ioaddr, int phy_id, int reg) +{ + __mdio_cmd(ioaddr, EhnMIIreq | EhnMIIread | + (((u32) reg) << EhnMIIregShift) | (phy_id << EhnMIIpmdShift)); + + return (u16) (SIS_R32(GMIIControl) >> EhnMIIdataShift); +} + +static void __mdio_write(struct net_device *dev, int phy_id, int reg, int val) +{ + struct sis190_private *tp = netdev_priv(dev); + + mdio_write(tp->mmio_addr, phy_id, reg, val); +} + +static int __mdio_read(struct net_device *dev, int phy_id, int reg) +{ + struct sis190_private *tp = netdev_priv(dev); + + return mdio_read(tp->mmio_addr, phy_id, reg); +} + +static u16 mdio_read_latched(void __iomem *ioaddr, int phy_id, int reg) +{ + mdio_read(ioaddr, phy_id, reg); + return mdio_read(ioaddr, phy_id, reg); +} + +static u16 sis190_read_eeprom(void __iomem *ioaddr, u32 reg) +{ + u16 data = 0xffff; + unsigned int i; + + if (!(SIS_R32(ROMControl) & 0x0002)) + return 0; + + SIS_W32(ROMInterface, EEREQ | EEROP | (reg << 10)); + + for (i = 0; i < 200; i++) { + if (!(SIS_R32(ROMInterface) & EEREQ)) { + data = (SIS_R32(ROMInterface) & 0xffff0000) >> 16; + break; + } + msleep(1); + } + + return data; +} + +static void sis190_irq_mask_and_ack(void __iomem *ioaddr) +{ + SIS_W32(IntrMask, 0x00); + SIS_W32(IntrStatus, 0xffffffff); + SIS_PCI_COMMIT(); +} + +static void sis190_asic_down(void __iomem *ioaddr) +{ + /* Stop the chip's Tx and Rx DMA processes. */ + + SIS_W32(TxControl, 0x1a00); + SIS_W32(RxControl, 0x1a00); + + sis190_irq_mask_and_ack(ioaddr); +} + +static void sis190_mark_as_last_descriptor(struct RxDesc *desc) +{ + desc->size |= cpu_to_le32(RingEnd); +} + +static inline void sis190_give_to_asic(struct RxDesc *desc, u32 rx_buf_sz) +{ + u32 eor = le32_to_cpu(desc->size) & RingEnd; + + desc->PSize = 0x0; + desc->size = cpu_to_le32((rx_buf_sz & RX_BUF_MASK) | eor); + wmb(); + desc->status = cpu_to_le32(OWNbit | INTbit); +} + +static inline void sis190_map_to_asic(struct RxDesc *desc, dma_addr_t mapping, + u32 rx_buf_sz) +{ + desc->addr = cpu_to_le32(mapping); + sis190_give_to_asic(desc, rx_buf_sz); +} + +static inline void sis190_make_unusable_by_asic(struct RxDesc *desc) +{ + desc->PSize = 0x0; + desc->addr = cpu_to_le32(0xdeadbeef); + desc->size &= cpu_to_le32(RingEnd); + wmb(); + desc->status = 0x0; +} + +static struct sk_buff *sis190_alloc_rx_skb(struct sis190_private *tp, + struct RxDesc *desc) +{ + u32 rx_buf_sz = tp->rx_buf_sz; + struct sk_buff *skb; + dma_addr_t mapping; + + skb = netdev_alloc_skb(tp->dev, rx_buf_sz); + if (unlikely(!skb)) + goto skb_alloc_failed; + mapping = dma_map_single(&tp->pci_dev->dev, skb->data, tp->rx_buf_sz, + DMA_FROM_DEVICE); + if (dma_mapping_error(&tp->pci_dev->dev, mapping)) + goto out; + sis190_map_to_asic(desc, mapping, rx_buf_sz); + + return skb; + +out: + dev_kfree_skb_any(skb); +skb_alloc_failed: + sis190_make_unusable_by_asic(desc); + return NULL; +} + +static u32 sis190_rx_fill(struct sis190_private *tp, struct net_device *dev, + u32 start, u32 end) +{ + u32 cur; + + for (cur = start; cur < end; cur++) { + unsigned int i = cur % NUM_RX_DESC; + + if (tp->Rx_skbuff[i]) + continue; + + tp->Rx_skbuff[i] = sis190_alloc_rx_skb(tp, tp->RxDescRing + i); + + if (!tp->Rx_skbuff[i]) + break; + } + return cur - start; +} + +static bool sis190_try_rx_copy(struct sis190_private *tp, + struct sk_buff **sk_buff, int pkt_size, + dma_addr_t addr) +{ + struct sk_buff *skb; + bool done = false; + + if (pkt_size >= rx_copybreak) + goto out; + + skb = netdev_alloc_skb_ip_align(tp->dev, pkt_size); + if (!skb) + goto out; + + dma_sync_single_for_cpu(&tp->pci_dev->dev, addr, tp->rx_buf_sz, + DMA_FROM_DEVICE); + skb_copy_to_linear_data(skb, sk_buff[0]->data, pkt_size); + *sk_buff = skb; + done = true; +out: + return done; +} + +static inline int sis190_rx_pkt_err(u32 status, struct net_device_stats *stats) +{ +#define ErrMask (OVRUN | SHORT | LIMIT | MIIER | NIBON | COLON | ABORT) + + if ((status & CRCOK) && !(status & ErrMask)) + return 0; + + if (!(status & CRCOK)) + stats->rx_crc_errors++; + else if (status & OVRUN) + stats->rx_over_errors++; + else if (status & (SHORT | LIMIT)) + stats->rx_length_errors++; + else if (status & (MIIER | NIBON | COLON)) + stats->rx_frame_errors++; + + stats->rx_errors++; + return -1; +} + +static int sis190_rx_interrupt(struct net_device *dev, + struct sis190_private *tp, void __iomem *ioaddr) +{ + struct net_device_stats *stats = &dev->stats; + u32 rx_left, cur_rx = tp->cur_rx; + u32 delta, count; + + rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx; + rx_left = sis190_rx_quota(rx_left, (u32) dev->quota); + + for (; rx_left > 0; rx_left--, cur_rx++) { + unsigned int entry = cur_rx % NUM_RX_DESC; + struct RxDesc *desc = tp->RxDescRing + entry; + u32 status; + + if (le32_to_cpu(desc->status) & OWNbit) + break; + + status = le32_to_cpu(desc->PSize); + + //netif_info(tp, intr, dev, "Rx PSize = %08x\n", status); + + if (sis190_rx_pkt_err(status, stats) < 0) + sis190_give_to_asic(desc, tp->rx_buf_sz); + else { + struct sk_buff *skb = tp->Rx_skbuff[entry]; + dma_addr_t addr = le32_to_cpu(desc->addr); + int pkt_size = (status & RxSizeMask) - 4; + struct pci_dev *pdev = tp->pci_dev; + + if (unlikely(pkt_size > tp->rx_buf_sz)) { + netif_info(tp, intr, dev, + "(frag) status = %08x\n", status); + stats->rx_dropped++; + stats->rx_length_errors++; + sis190_give_to_asic(desc, tp->rx_buf_sz); + continue; + } + + + if (sis190_try_rx_copy(tp, &skb, pkt_size, addr)) { + dma_sync_single_for_device(&pdev->dev, addr, + tp->rx_buf_sz, + DMA_FROM_DEVICE); + sis190_give_to_asic(desc, tp->rx_buf_sz); + } else { + dma_unmap_single(&pdev->dev, addr, + tp->rx_buf_sz, + DMA_FROM_DEVICE); + tp->Rx_skbuff[entry] = NULL; + sis190_make_unusable_by_asic(desc); + } + + skb_put(skb, pkt_size); + skb->protocol = eth_type_trans(skb, dev); + + sis190_rx_skb(skb); + + stats->rx_packets++; + stats->rx_bytes += pkt_size; + if ((status & BCAST) == MCAST) + stats->multicast++; + } + } + count = cur_rx - tp->cur_rx; + tp->cur_rx = cur_rx; + + delta = sis190_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx); + if (!delta && count) + netif_info(tp, intr, dev, "no Rx buffer allocated\n"); + tp->dirty_rx += delta; + + if ((tp->dirty_rx + NUM_RX_DESC) == tp->cur_rx) + netif_emerg(tp, intr, dev, "Rx buffers exhausted\n"); + + return count; +} + +static void sis190_unmap_tx_skb(struct pci_dev *pdev, struct sk_buff *skb, + struct TxDesc *desc) +{ + unsigned int len; + + len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; + + dma_unmap_single(&pdev->dev, le32_to_cpu(desc->addr), len, + DMA_TO_DEVICE); + + memset(desc, 0x00, sizeof(*desc)); +} + +static inline int sis190_tx_pkt_err(u32 status, struct net_device_stats *stats) +{ +#define TxErrMask (WND | TABRT | FIFO | LINK) + + if (!unlikely(status & TxErrMask)) + return 0; + + if (status & WND) + stats->tx_window_errors++; + if (status & TABRT) + stats->tx_aborted_errors++; + if (status & FIFO) + stats->tx_fifo_errors++; + if (status & LINK) + stats->tx_carrier_errors++; + + stats->tx_errors++; + + return -1; +} + +static void sis190_tx_interrupt(struct net_device *dev, + struct sis190_private *tp, void __iomem *ioaddr) +{ + struct net_device_stats *stats = &dev->stats; + u32 pending, dirty_tx = tp->dirty_tx; + /* + * It would not be needed if queueing was allowed to be enabled + * again too early (hint: think preempt and unclocked smp systems). + */ + unsigned int queue_stopped; + + smp_rmb(); + pending = tp->cur_tx - dirty_tx; + queue_stopped = (pending == NUM_TX_DESC); + + for (; pending; pending--, dirty_tx++) { + unsigned int entry = dirty_tx % NUM_TX_DESC; + struct TxDesc *txd = tp->TxDescRing + entry; + u32 status = le32_to_cpu(txd->status); + struct sk_buff *skb; + + if (status & OWNbit) + break; + + skb = tp->Tx_skbuff[entry]; + + if (likely(sis190_tx_pkt_err(status, stats) == 0)) { + stats->tx_packets++; + stats->tx_bytes += skb->len; + stats->collisions += ((status & ColCountMask) - 1); + } + + sis190_unmap_tx_skb(tp->pci_dev, skb, txd); + tp->Tx_skbuff[entry] = NULL; + dev_consume_skb_irq(skb); + } + + if (tp->dirty_tx != dirty_tx) { + tp->dirty_tx = dirty_tx; + smp_wmb(); + if (queue_stopped) + netif_wake_queue(dev); + } +} + +/* + * The interrupt handler does all of the Rx thread work and cleans up after + * the Tx thread. + */ +static irqreturn_t sis190_irq(int irq, void *__dev) +{ + struct net_device *dev = __dev; + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + unsigned int handled = 0; + u32 status; + + status = SIS_R32(IntrStatus); + + if ((status == 0xffffffff) || !status) + goto out; + + handled = 1; + + if (unlikely(!netif_running(dev))) { + sis190_asic_down(ioaddr); + goto out; + } + + SIS_W32(IntrStatus, status); + +// netif_info(tp, intr, dev, "status = %08x\n", status); + + if (status & LinkChange) { + netif_info(tp, intr, dev, "link change\n"); + del_timer(&tp->timer); + schedule_work(&tp->phy_task); + } + + if (status & RxQInt) + sis190_rx_interrupt(dev, tp, ioaddr); + + if (status & TxQ0Int) + sis190_tx_interrupt(dev, tp, ioaddr); +out: + return IRQ_RETVAL(handled); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void sis190_netpoll(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + const int irq = tp->pci_dev->irq; + + disable_irq(irq); + sis190_irq(irq, dev); + enable_irq(irq); +} +#endif + +static void sis190_free_rx_skb(struct sis190_private *tp, + struct sk_buff **sk_buff, struct RxDesc *desc) +{ + struct pci_dev *pdev = tp->pci_dev; + + dma_unmap_single(&pdev->dev, le32_to_cpu(desc->addr), tp->rx_buf_sz, + DMA_FROM_DEVICE); + dev_kfree_skb(*sk_buff); + *sk_buff = NULL; + sis190_make_unusable_by_asic(desc); +} + +static void sis190_rx_clear(struct sis190_private *tp) +{ + unsigned int i; + + for (i = 0; i < NUM_RX_DESC; i++) { + if (!tp->Rx_skbuff[i]) + continue; + sis190_free_rx_skb(tp, tp->Rx_skbuff + i, tp->RxDescRing + i); + } +} + +static void sis190_init_ring_indexes(struct sis190_private *tp) +{ + tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0; +} + +static int sis190_init_ring(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + + sis190_init_ring_indexes(tp); + + memset(tp->Tx_skbuff, 0x0, NUM_TX_DESC * sizeof(struct sk_buff *)); + memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *)); + + if (sis190_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC) + goto err_rx_clear; + + sis190_mark_as_last_descriptor(tp->RxDescRing + NUM_RX_DESC - 1); + + return 0; + +err_rx_clear: + sis190_rx_clear(tp); + return -ENOMEM; +} + +static void sis190_set_rx_mode(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + unsigned long flags; + u32 mc_filter[2]; /* Multicast hash filter */ + u16 rx_mode; + + if (dev->flags & IFF_PROMISC) { + rx_mode = + AcceptBroadcast | AcceptMulticast | AcceptMyPhys | + AcceptAllPhys; + mc_filter[1] = mc_filter[0] = 0xffffffff; + } else if ((netdev_mc_count(dev) > multicast_filter_limit) || + (dev->flags & IFF_ALLMULTI)) { + /* Too many to filter perfectly -- accept all multicasts. */ + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + mc_filter[1] = mc_filter[0] = 0xffffffff; + } else { + struct netdev_hw_addr *ha; + + rx_mode = AcceptBroadcast | AcceptMyPhys; + mc_filter[1] = mc_filter[0] = 0; + netdev_for_each_mc_addr(ha, dev) { + int bit_nr = + ether_crc(ETH_ALEN, ha->addr) & 0x3f; + mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); + rx_mode |= AcceptMulticast; + } + } + + spin_lock_irqsave(&tp->lock, flags); + + SIS_W16(RxMacControl, rx_mode | 0x2); + SIS_W32(RxHashTable, mc_filter[0]); + SIS_W32(RxHashTable + 4, mc_filter[1]); + + spin_unlock_irqrestore(&tp->lock, flags); +} + +static void sis190_soft_reset(void __iomem *ioaddr) +{ + SIS_W32(IntrControl, 0x8000); + SIS_PCI_COMMIT(); + SIS_W32(IntrControl, 0x0); + sis190_asic_down(ioaddr); +} + +static void sis190_hw_start(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + + sis190_soft_reset(ioaddr); + + SIS_W32(TxDescStartAddr, tp->tx_dma); + SIS_W32(RxDescStartAddr, tp->rx_dma); + + SIS_W32(IntrStatus, 0xffffffff); + SIS_W32(IntrMask, 0x0); + SIS_W32(GMIIControl, 0x0); + SIS_W32(TxMacControl, 0x60); + SIS_W16(RxMacControl, 0x02); + SIS_W32(RxHashTable, 0x0); + SIS_W32(0x6c, 0x0); + SIS_W32(RxWolCtrl, 0x0); + SIS_W32(RxWolData, 0x0); + + SIS_PCI_COMMIT(); + + sis190_set_rx_mode(dev); + + /* Enable all known interrupts by setting the interrupt mask. */ + SIS_W32(IntrMask, sis190_intr_mask); + + SIS_W32(TxControl, 0x1a00 | CmdTxEnb); + SIS_W32(RxControl, 0x1a1d); + + netif_start_queue(dev); +} + +static void sis190_phy_task(struct work_struct *work) +{ + struct sis190_private *tp = + container_of(work, struct sis190_private, phy_task); + struct net_device *dev = tp->dev; + void __iomem *ioaddr = tp->mmio_addr; + int phy_id = tp->mii_if.phy_id; + u16 val; + + rtnl_lock(); + + if (!netif_running(dev)) + goto out_unlock; + + val = mdio_read(ioaddr, phy_id, MII_BMCR); + if (val & BMCR_RESET) { + // FIXME: needlessly high ? -- FR 02/07/2005 + mod_timer(&tp->timer, jiffies + HZ/10); + goto out_unlock; + } + + val = mdio_read_latched(ioaddr, phy_id, MII_BMSR); + if (!(val & BMSR_ANEGCOMPLETE) && tp->link_status != LNK_AUTONEG) { + netif_carrier_off(dev); + netif_warn(tp, link, dev, "auto-negotiating...\n"); + tp->link_status = LNK_AUTONEG; + } else if ((val & BMSR_LSTATUS) && tp->link_status != LNK_ON) { + /* Rejoice ! */ + struct { + int val; + u32 ctl; + const char *msg; + } reg31[] = { + { LPA_1000FULL, 0x07000c00 | 0x00001000, + "1000 Mbps Full Duplex" }, + { LPA_1000HALF, 0x07000c00, + "1000 Mbps Half Duplex" }, + { LPA_100FULL, 0x04000800 | 0x00001000, + "100 Mbps Full Duplex" }, + { LPA_100HALF, 0x04000800, + "100 Mbps Half Duplex" }, + { LPA_10FULL, 0x04000400 | 0x00001000, + "10 Mbps Full Duplex" }, + { LPA_10HALF, 0x04000400, + "10 Mbps Half Duplex" }, + { 0, 0x04000400, "unknown" } + }, *p = NULL; + u16 adv, autoexp, gigadv, gigrec; + + val = mdio_read(ioaddr, phy_id, 0x1f); + netif_info(tp, link, dev, "mii ext = %04x\n", val); + + val = mdio_read(ioaddr, phy_id, MII_LPA); + adv = mdio_read(ioaddr, phy_id, MII_ADVERTISE); + autoexp = mdio_read(ioaddr, phy_id, MII_EXPANSION); + netif_info(tp, link, dev, "mii lpa=%04x adv=%04x exp=%04x\n", + val, adv, autoexp); + + if (val & LPA_NPAGE && autoexp & EXPANSION_NWAY) { + /* check for gigabit speed */ + gigadv = mdio_read(ioaddr, phy_id, MII_CTRL1000); + gigrec = mdio_read(ioaddr, phy_id, MII_STAT1000); + val = (gigadv & (gigrec >> 2)); + if (val & ADVERTISE_1000FULL) + p = reg31; + else if (val & ADVERTISE_1000HALF) + p = reg31 + 1; + } + if (!p) { + val &= adv; + + for (p = reg31; p->val; p++) { + if ((val & p->val) == p->val) + break; + } + } + + p->ctl |= SIS_R32(StationControl) & ~0x0f001c00; + + if ((tp->features & F_HAS_RGMII) && + (tp->features & F_PHY_BCM5461)) { + // Set Tx Delay in RGMII mode. + mdio_write(ioaddr, phy_id, 0x18, 0xf1c7); + udelay(200); + mdio_write(ioaddr, phy_id, 0x1c, 0x8c00); + p->ctl |= 0x03000000; + } + + SIS_W32(StationControl, p->ctl); + + if (tp->features & F_HAS_RGMII) { + SIS_W32(RGDelay, 0x0441); + SIS_W32(RGDelay, 0x0440); + } + + tp->negotiated_lpa = p->val; + + netif_info(tp, link, dev, "link on %s mode\n", p->msg); + netif_carrier_on(dev); + tp->link_status = LNK_ON; + } else if (!(val & BMSR_LSTATUS) && tp->link_status != LNK_AUTONEG) + tp->link_status = LNK_OFF; + mod_timer(&tp->timer, jiffies + SIS190_PHY_TIMEOUT); + +out_unlock: + rtnl_unlock(); +} + +static void sis190_phy_timer(struct timer_list *t) +{ + struct sis190_private *tp = from_timer(tp, t, timer); + struct net_device *dev = tp->dev; + + if (likely(netif_running(dev))) + schedule_work(&tp->phy_task); +} + +static inline void sis190_delete_timer(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + + del_timer_sync(&tp->timer); +} + +static inline void sis190_request_timer(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + struct timer_list *timer = &tp->timer; + + timer_setup(timer, sis190_phy_timer, 0); + timer->expires = jiffies + SIS190_PHY_TIMEOUT; + add_timer(timer); +} + +static void sis190_set_rxbufsize(struct sis190_private *tp, + struct net_device *dev) +{ + unsigned int mtu = dev->mtu; + + tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE; + /* RxDesc->size has a licence to kill the lower bits */ + if (tp->rx_buf_sz & 0x07) { + tp->rx_buf_sz += 8; + tp->rx_buf_sz &= RX_BUF_MASK; + } +} + +static int sis190_open(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + struct pci_dev *pdev = tp->pci_dev; + int rc = -ENOMEM; + + sis190_set_rxbufsize(tp, dev); + + /* + * Rx and Tx descriptors need 256 bytes alignment. + * pci_alloc_consistent() guarantees a stronger alignment. + */ + tp->TxDescRing = dma_alloc_coherent(&pdev->dev, TX_RING_BYTES, + &tp->tx_dma, GFP_KERNEL); + if (!tp->TxDescRing) + goto out; + + tp->RxDescRing = dma_alloc_coherent(&pdev->dev, RX_RING_BYTES, + &tp->rx_dma, GFP_KERNEL); + if (!tp->RxDescRing) + goto err_free_tx_0; + + rc = sis190_init_ring(dev); + if (rc < 0) + goto err_free_rx_1; + + sis190_request_timer(dev); + + rc = request_irq(pdev->irq, sis190_irq, IRQF_SHARED, dev->name, dev); + if (rc < 0) + goto err_release_timer_2; + + sis190_hw_start(dev); +out: + return rc; + +err_release_timer_2: + sis190_delete_timer(dev); + sis190_rx_clear(tp); +err_free_rx_1: + dma_free_coherent(&pdev->dev, RX_RING_BYTES, tp->RxDescRing, + tp->rx_dma); +err_free_tx_0: + dma_free_coherent(&pdev->dev, TX_RING_BYTES, tp->TxDescRing, + tp->tx_dma); + goto out; +} + +static void sis190_tx_clear(struct sis190_private *tp) +{ + unsigned int i; + + for (i = 0; i < NUM_TX_DESC; i++) { + struct sk_buff *skb = tp->Tx_skbuff[i]; + + if (!skb) + continue; + + sis190_unmap_tx_skb(tp->pci_dev, skb, tp->TxDescRing + i); + tp->Tx_skbuff[i] = NULL; + dev_kfree_skb(skb); + + tp->dev->stats.tx_dropped++; + } + tp->cur_tx = tp->dirty_tx = 0; +} + +static void sis190_down(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + unsigned int poll_locked = 0; + + sis190_delete_timer(dev); + + netif_stop_queue(dev); + + do { + spin_lock_irq(&tp->lock); + + sis190_asic_down(ioaddr); + + spin_unlock_irq(&tp->lock); + + synchronize_irq(tp->pci_dev->irq); + + if (!poll_locked) + poll_locked++; + + synchronize_rcu(); + + } while (SIS_R32(IntrMask)); + + sis190_tx_clear(tp); + sis190_rx_clear(tp); +} + +static int sis190_close(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + struct pci_dev *pdev = tp->pci_dev; + + sis190_down(dev); + + free_irq(pdev->irq, dev); + + dma_free_coherent(&pdev->dev, TX_RING_BYTES, tp->TxDescRing, + tp->tx_dma); + dma_free_coherent(&pdev->dev, RX_RING_BYTES, tp->RxDescRing, + tp->rx_dma); + + tp->TxDescRing = NULL; + tp->RxDescRing = NULL; + + return 0; +} + +static netdev_tx_t sis190_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + u32 len, entry, dirty_tx; + struct TxDesc *desc; + dma_addr_t mapping; + + if (unlikely(skb->len < ETH_ZLEN)) { + if (skb_padto(skb, ETH_ZLEN)) { + dev->stats.tx_dropped++; + goto out; + } + len = ETH_ZLEN; + } else { + len = skb->len; + } + + entry = tp->cur_tx % NUM_TX_DESC; + desc = tp->TxDescRing + entry; + + if (unlikely(le32_to_cpu(desc->status) & OWNbit)) { + netif_stop_queue(dev); + netif_err(tp, tx_err, dev, + "BUG! Tx Ring full when queue awake!\n"); + return NETDEV_TX_BUSY; + } + + mapping = dma_map_single(&tp->pci_dev->dev, skb->data, len, + DMA_TO_DEVICE); + if (dma_mapping_error(&tp->pci_dev->dev, mapping)) { + netif_err(tp, tx_err, dev, + "PCI mapping failed, dropping packet"); + return NETDEV_TX_BUSY; + } + + tp->Tx_skbuff[entry] = skb; + + desc->PSize = cpu_to_le32(len); + desc->addr = cpu_to_le32(mapping); + + desc->size = cpu_to_le32(len); + if (entry == (NUM_TX_DESC - 1)) + desc->size |= cpu_to_le32(RingEnd); + + wmb(); + + desc->status = cpu_to_le32(OWNbit | INTbit | DEFbit | CRCbit | PADbit); + if (tp->negotiated_lpa & (LPA_1000HALF | LPA_100HALF | LPA_10HALF)) { + /* Half Duplex */ + desc->status |= cpu_to_le32(COLEN | CRSEN | BKFEN); + if (tp->negotiated_lpa & (LPA_1000HALF | LPA_1000FULL)) + desc->status |= cpu_to_le32(EXTEN | BSTEN); /* gigabit HD */ + } + + tp->cur_tx++; + + smp_wmb(); + + SIS_W32(TxControl, 0x1a00 | CmdReset | CmdTxEnb); + + dirty_tx = tp->dirty_tx; + if ((tp->cur_tx - NUM_TX_DESC) == dirty_tx) { + netif_stop_queue(dev); + smp_rmb(); + if (dirty_tx != tp->dirty_tx) + netif_wake_queue(dev); + } +out: + return NETDEV_TX_OK; +} + +static void sis190_free_phy(struct list_head *first_phy) +{ + struct sis190_phy *cur, *next; + + list_for_each_entry_safe(cur, next, first_phy, list) { + kfree(cur); + } +} + +/** + * sis190_default_phy - Select default PHY for sis190 mac. + * @dev: the net device to probe for + * + * Select first detected PHY with link as default. + * If no one is link on, select PHY whose types is HOME as default. + * If HOME doesn't exist, select LAN. + */ +static u16 sis190_default_phy(struct net_device *dev) +{ + struct sis190_phy *phy, *phy_home, *phy_default, *phy_lan; + struct sis190_private *tp = netdev_priv(dev); + struct mii_if_info *mii_if = &tp->mii_if; + void __iomem *ioaddr = tp->mmio_addr; + u16 status; + + phy_home = phy_default = phy_lan = NULL; + + list_for_each_entry(phy, &tp->first_phy, list) { + status = mdio_read_latched(ioaddr, phy->phy_id, MII_BMSR); + + // Link ON & Not select default PHY & not ghost PHY. + if ((status & BMSR_LSTATUS) && + !phy_default && + (phy->type != UNKNOWN)) { + phy_default = phy; + } else { + status = mdio_read(ioaddr, phy->phy_id, MII_BMCR); + mdio_write(ioaddr, phy->phy_id, MII_BMCR, + status | BMCR_ANENABLE | BMCR_ISOLATE); + if (phy->type == HOME) + phy_home = phy; + else if (phy->type == LAN) + phy_lan = phy; + } + } + + if (!phy_default) { + if (phy_home) + phy_default = phy_home; + else if (phy_lan) + phy_default = phy_lan; + else + phy_default = list_first_entry(&tp->first_phy, + struct sis190_phy, list); + } + + if (mii_if->phy_id != phy_default->phy_id) { + mii_if->phy_id = phy_default->phy_id; + if (netif_msg_probe(tp)) + pr_info("%s: Using transceiver at address %d as default\n", + pci_name(tp->pci_dev), mii_if->phy_id); + } + + status = mdio_read(ioaddr, mii_if->phy_id, MII_BMCR); + status &= (~BMCR_ISOLATE); + + mdio_write(ioaddr, mii_if->phy_id, MII_BMCR, status); + status = mdio_read_latched(ioaddr, mii_if->phy_id, MII_BMSR); + + return status; +} + +static void sis190_init_phy(struct net_device *dev, struct sis190_private *tp, + struct sis190_phy *phy, unsigned int phy_id, + u16 mii_status) +{ + void __iomem *ioaddr = tp->mmio_addr; + struct mii_chip_info *p; + + INIT_LIST_HEAD(&phy->list); + phy->status = mii_status; + phy->phy_id = phy_id; + + phy->id[0] = mdio_read(ioaddr, phy_id, MII_PHYSID1); + phy->id[1] = mdio_read(ioaddr, phy_id, MII_PHYSID2); + + for (p = mii_chip_table; p->type; p++) { + if ((p->id[0] == phy->id[0]) && + (p->id[1] == (phy->id[1] & 0xfff0))) { + break; + } + } + + if (p->id[1]) { + phy->type = (p->type == MIX) ? + ((mii_status & (BMSR_100FULL | BMSR_100HALF)) ? + LAN : HOME) : p->type; + tp->features |= p->feature; + if (netif_msg_probe(tp)) + pr_info("%s: %s transceiver at address %d\n", + pci_name(tp->pci_dev), p->name, phy_id); + } else { + phy->type = UNKNOWN; + if (netif_msg_probe(tp)) + pr_info("%s: unknown PHY 0x%x:0x%x transceiver at address %d\n", + pci_name(tp->pci_dev), + phy->id[0], (phy->id[1] & 0xfff0), phy_id); + } +} + +static void sis190_mii_probe_88e1111_fixup(struct sis190_private *tp) +{ + if (tp->features & F_PHY_88E1111) { + void __iomem *ioaddr = tp->mmio_addr; + int phy_id = tp->mii_if.phy_id; + u16 reg[2][2] = { + { 0x808b, 0x0ce1 }, + { 0x808f, 0x0c60 } + }, *p; + + p = (tp->features & F_HAS_RGMII) ? reg[0] : reg[1]; + + mdio_write(ioaddr, phy_id, 0x1b, p[0]); + udelay(200); + mdio_write(ioaddr, phy_id, 0x14, p[1]); + udelay(200); + } +} + +/** + * sis190_mii_probe - Probe MII PHY for sis190 + * @dev: the net device to probe for + * + * Search for total of 32 possible mii phy addresses. + * Identify and set current phy if found one, + * return error if it failed to found. + */ +static int sis190_mii_probe(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + struct mii_if_info *mii_if = &tp->mii_if; + void __iomem *ioaddr = tp->mmio_addr; + int phy_id; + int rc = 0; + + INIT_LIST_HEAD(&tp->first_phy); + + for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) { + struct sis190_phy *phy; + u16 status; + + status = mdio_read_latched(ioaddr, phy_id, MII_BMSR); + + // Try next mii if the current one is not accessible. + if (status == 0xffff || status == 0x0000) + continue; + + phy = kmalloc(sizeof(*phy), GFP_KERNEL); + if (!phy) { + sis190_free_phy(&tp->first_phy); + rc = -ENOMEM; + goto out; + } + + sis190_init_phy(dev, tp, phy, phy_id, status); + + list_add(&tp->first_phy, &phy->list); + } + + if (list_empty(&tp->first_phy)) { + if (netif_msg_probe(tp)) + pr_info("%s: No MII transceivers found!\n", + pci_name(tp->pci_dev)); + rc = -EIO; + goto out; + } + + /* Select default PHY for mac */ + sis190_default_phy(dev); + + sis190_mii_probe_88e1111_fixup(tp); + + mii_if->dev = dev; + mii_if->mdio_read = __mdio_read; + mii_if->mdio_write = __mdio_write; + mii_if->phy_id_mask = PHY_ID_ANY; + mii_if->reg_num_mask = MII_REG_ANY; +out: + return rc; +} + +static void sis190_mii_remove(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + + sis190_free_phy(&tp->first_phy); +} + +static void sis190_release_board(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct sis190_private *tp = netdev_priv(dev); + + iounmap(tp->mmio_addr); + pci_release_regions(pdev); + pci_disable_device(pdev); + free_netdev(dev); +} + +static struct net_device *sis190_init_board(struct pci_dev *pdev) +{ + struct sis190_private *tp; + struct net_device *dev; + void __iomem *ioaddr; + int rc; + + dev = alloc_etherdev(sizeof(*tp)); + if (!dev) { + rc = -ENOMEM; + goto err_out_0; + } + + SET_NETDEV_DEV(dev, &pdev->dev); + + tp = netdev_priv(dev); + tp->dev = dev; + tp->msg_enable = netif_msg_init(debug.msg_enable, SIS190_MSG_DEFAULT); + + rc = pci_enable_device(pdev); + if (rc < 0) { + if (netif_msg_probe(tp)) + pr_err("%s: enable failure\n", pci_name(pdev)); + goto err_free_dev_1; + } + + rc = -ENODEV; + + if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { + if (netif_msg_probe(tp)) + pr_err("%s: region #0 is no MMIO resource\n", + pci_name(pdev)); + goto err_pci_disable_2; + } + if (pci_resource_len(pdev, 0) < SIS190_REGS_SIZE) { + if (netif_msg_probe(tp)) + pr_err("%s: invalid PCI region size(s)\n", + pci_name(pdev)); + goto err_pci_disable_2; + } + + rc = pci_request_regions(pdev, DRV_NAME); + if (rc < 0) { + if (netif_msg_probe(tp)) + pr_err("%s: could not request regions\n", + pci_name(pdev)); + goto err_pci_disable_2; + } + + rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); + if (rc < 0) { + if (netif_msg_probe(tp)) + pr_err("%s: DMA configuration failed\n", + pci_name(pdev)); + goto err_free_res_3; + } + + pci_set_master(pdev); + + ioaddr = ioremap(pci_resource_start(pdev, 0), SIS190_REGS_SIZE); + if (!ioaddr) { + if (netif_msg_probe(tp)) + pr_err("%s: cannot remap MMIO, aborting\n", + pci_name(pdev)); + rc = -EIO; + goto err_free_res_3; + } + + tp->pci_dev = pdev; + tp->mmio_addr = ioaddr; + tp->link_status = LNK_OFF; + + sis190_irq_mask_and_ack(ioaddr); + + sis190_soft_reset(ioaddr); +out: + return dev; + +err_free_res_3: + pci_release_regions(pdev); +err_pci_disable_2: + pci_disable_device(pdev); +err_free_dev_1: + free_netdev(dev); +err_out_0: + dev = ERR_PTR(rc); + goto out; +} + +static void sis190_tx_timeout(struct net_device *dev, unsigned int txqueue) +{ + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + u8 tmp8; + + /* Disable Tx, if not already */ + tmp8 = SIS_R8(TxControl); + if (tmp8 & CmdTxEnb) + SIS_W8(TxControl, tmp8 & ~CmdTxEnb); + + netif_info(tp, tx_err, dev, "Transmit timeout, status %08x %08x\n", + SIS_R32(TxControl), SIS_R32(TxSts)); + + /* Disable interrupts by clearing the interrupt mask. */ + SIS_W32(IntrMask, 0x0000); + + /* Stop a shared interrupt from scavenging while we are. */ + spin_lock_irq(&tp->lock); + sis190_tx_clear(tp); + spin_unlock_irq(&tp->lock); + + /* ...and finally, reset everything. */ + sis190_hw_start(dev); + + netif_wake_queue(dev); +} + +static void sis190_set_rgmii(struct sis190_private *tp, u8 reg) +{ + tp->features |= (reg & 0x80) ? F_HAS_RGMII : 0; +} + +static int sis190_get_mac_addr_from_eeprom(struct pci_dev *pdev, + struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + u16 sig; + int i; + + if (netif_msg_probe(tp)) + pr_info("%s: Read MAC address from EEPROM\n", pci_name(pdev)); + + /* Check to see if there is a sane EEPROM */ + sig = (u16) sis190_read_eeprom(ioaddr, EEPROMSignature); + + if ((sig == 0xffff) || (sig == 0x0000)) { + if (netif_msg_probe(tp)) + pr_info("%s: Error EEPROM read %x\n", + pci_name(pdev), sig); + return -EIO; + } + + /* Get MAC address from EEPROM */ + for (i = 0; i < ETH_ALEN / 2; i++) { + u16 w = sis190_read_eeprom(ioaddr, EEPROMMACAddr + i); + + ((__le16 *)dev->dev_addr)[i] = cpu_to_le16(w); + } + + sis190_set_rgmii(tp, sis190_read_eeprom(ioaddr, EEPROMInfo)); + + return 0; +} + +/** + * sis190_get_mac_addr_from_apc - Get MAC address for SiS96x model + * @pdev: PCI device + * @dev: network device to get address for + * + * SiS96x model, use APC CMOS RAM to store MAC address. + * APC CMOS RAM is accessed through ISA bridge. + * MAC address is read into @net_dev->dev_addr. + */ +static int sis190_get_mac_addr_from_apc(struct pci_dev *pdev, + struct net_device *dev) +{ + static const u16 ids[] = { 0x0965, 0x0966, 0x0968 }; + struct sis190_private *tp = netdev_priv(dev); + struct pci_dev *isa_bridge; + u8 reg, tmp8; + unsigned int i; + + if (netif_msg_probe(tp)) + pr_info("%s: Read MAC address from APC\n", pci_name(pdev)); + + for (i = 0; i < ARRAY_SIZE(ids); i++) { + isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, ids[i], NULL); + if (isa_bridge) + break; + } + + if (!isa_bridge) { + if (netif_msg_probe(tp)) + pr_info("%s: Can not find ISA bridge\n", + pci_name(pdev)); + return -EIO; + } + + /* Enable port 78h & 79h to access APC Registers. */ + pci_read_config_byte(isa_bridge, 0x48, &tmp8); + reg = (tmp8 & ~0x02); + pci_write_config_byte(isa_bridge, 0x48, reg); + udelay(50); + pci_read_config_byte(isa_bridge, 0x48, ®); + + for (i = 0; i < ETH_ALEN; i++) { + outb(0x9 + i, 0x78); + dev->dev_addr[i] = inb(0x79); + } + + outb(0x12, 0x78); + reg = inb(0x79); + + sis190_set_rgmii(tp, reg); + + /* Restore the value to ISA Bridge */ + pci_write_config_byte(isa_bridge, 0x48, tmp8); + pci_dev_put(isa_bridge); + + return 0; +} + +/** + * sis190_init_rxfilter - Initialize the Rx filter + * @dev: network device to initialize + * + * Set receive filter address to our MAC address + * and enable packet filtering. + */ +static inline void sis190_init_rxfilter(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + u16 ctl; + int i; + + ctl = SIS_R16(RxMacControl); + /* + * Disable packet filtering before setting filter. + * Note: SiS's driver writes 32 bits but RxMacControl is 16 bits + * only and followed by RxMacAddr (6 bytes). Strange. -- FR + */ + SIS_W16(RxMacControl, ctl & ~0x0f00); + + for (i = 0; i < ETH_ALEN; i++) + SIS_W8(RxMacAddr + i, dev->dev_addr[i]); + + SIS_W16(RxMacControl, ctl); + SIS_PCI_COMMIT(); +} + +static int sis190_get_mac_addr(struct pci_dev *pdev, struct net_device *dev) +{ + int rc; + + rc = sis190_get_mac_addr_from_eeprom(pdev, dev); + if (rc < 0) { + u8 reg; + + pci_read_config_byte(pdev, 0x73, ®); + + if (reg & 0x00000001) + rc = sis190_get_mac_addr_from_apc(pdev, dev); + } + return rc; +} + +static void sis190_set_speed_auto(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + void __iomem *ioaddr = tp->mmio_addr; + int phy_id = tp->mii_if.phy_id; + int val; + + netif_info(tp, link, dev, "Enabling Auto-negotiation\n"); + + val = mdio_read(ioaddr, phy_id, MII_ADVERTISE); + + // Enable 10/100 Full/Half Mode, leave MII_ADVERTISE bit4:0 + // unchanged. + mdio_write(ioaddr, phy_id, MII_ADVERTISE, (val & ADVERTISE_SLCT) | + ADVERTISE_100FULL | ADVERTISE_10FULL | + ADVERTISE_100HALF | ADVERTISE_10HALF); + + // Enable 1000 Full Mode. + mdio_write(ioaddr, phy_id, MII_CTRL1000, ADVERTISE_1000FULL); + + // Enable auto-negotiation and restart auto-negotiation. + mdio_write(ioaddr, phy_id, MII_BMCR, + BMCR_ANENABLE | BMCR_ANRESTART | BMCR_RESET); +} + +static int sis190_get_link_ksettings(struct net_device *dev, + struct ethtool_link_ksettings *cmd) +{ + struct sis190_private *tp = netdev_priv(dev); + + mii_ethtool_get_link_ksettings(&tp->mii_if, cmd); + + return 0; +} + +static int sis190_set_link_ksettings(struct net_device *dev, + const struct ethtool_link_ksettings *cmd) +{ + struct sis190_private *tp = netdev_priv(dev); + + return mii_ethtool_set_link_ksettings(&tp->mii_if, cmd); +} + +static void sis190_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + struct sis190_private *tp = netdev_priv(dev); + + strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); + strlcpy(info->version, DRV_VERSION, sizeof(info->version)); + strlcpy(info->bus_info, pci_name(tp->pci_dev), + sizeof(info->bus_info)); +} + +static int sis190_get_regs_len(struct net_device *dev) +{ + return SIS190_REGS_SIZE; +} + +static void sis190_get_regs(struct net_device *dev, struct ethtool_regs *regs, + void *p) +{ + struct sis190_private *tp = netdev_priv(dev); + unsigned long flags; + + spin_lock_irqsave(&tp->lock, flags); + memcpy_fromio(p, tp->mmio_addr, regs->len); + spin_unlock_irqrestore(&tp->lock, flags); +} + +static int sis190_nway_reset(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + + return mii_nway_restart(&tp->mii_if); +} + +static u32 sis190_get_msglevel(struct net_device *dev) +{ + struct sis190_private *tp = netdev_priv(dev); + + return tp->msg_enable; +} + +static void sis190_set_msglevel(struct net_device *dev, u32 value) +{ + struct sis190_private *tp = netdev_priv(dev); + + tp->msg_enable = value; +} + +static const struct ethtool_ops sis190_ethtool_ops = { + .get_drvinfo = sis190_get_drvinfo, + .get_regs_len = sis190_get_regs_len, + .get_regs = sis190_get_regs, + .get_link = ethtool_op_get_link, + .get_msglevel = sis190_get_msglevel, + .set_msglevel = sis190_set_msglevel, + .nway_reset = sis190_nway_reset, + .get_link_ksettings = sis190_get_link_ksettings, + .set_link_ksettings = sis190_set_link_ksettings, +}; + +static int sis190_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +{ + struct sis190_private *tp = netdev_priv(dev); + + return !netif_running(dev) ? -EINVAL : + generic_mii_ioctl(&tp->mii_if, if_mii(ifr), cmd, NULL); +} + +static int sis190_mac_addr(struct net_device *dev, void *p) +{ + int rc; + + rc = eth_mac_addr(dev, p); + if (!rc) + sis190_init_rxfilter(dev); + return rc; +} + +static const struct net_device_ops sis190_netdev_ops = { + .ndo_open = sis190_open, + .ndo_stop = sis190_close, + .ndo_do_ioctl = sis190_ioctl, + .ndo_start_xmit = sis190_start_xmit, + .ndo_tx_timeout = sis190_tx_timeout, + .ndo_set_rx_mode = sis190_set_rx_mode, + .ndo_set_mac_address = sis190_mac_addr, + .ndo_validate_addr = eth_validate_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = sis190_netpoll, +#endif +}; + +static int sis190_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + static int printed_version = 0; + struct sis190_private *tp; + struct net_device *dev; + void __iomem *ioaddr; + int rc; + + if (!printed_version) { + if (netif_msg_drv(&debug)) + pr_info(SIS190_DRIVER_NAME " loaded\n"); + printed_version = 1; + } + + dev = sis190_init_board(pdev); + if (IS_ERR(dev)) { + rc = PTR_ERR(dev); + goto out; + } + + pci_set_drvdata(pdev, dev); + + tp = netdev_priv(dev); + ioaddr = tp->mmio_addr; + + rc = sis190_get_mac_addr(pdev, dev); + if (rc < 0) + goto err_release_board; + + sis190_init_rxfilter(dev); + + INIT_WORK(&tp->phy_task, sis190_phy_task); + + dev->netdev_ops = &sis190_netdev_ops; + + dev->ethtool_ops = &sis190_ethtool_ops; + dev->watchdog_timeo = SIS190_TX_TIMEOUT; + + spin_lock_init(&tp->lock); + + rc = sis190_mii_probe(dev); + if (rc < 0) + goto err_release_board; + + rc = register_netdev(dev); + if (rc < 0) + goto err_remove_mii; + + if (netif_msg_probe(tp)) { + netdev_info(dev, "%s: %s at %p (IRQ: %d), %pM\n", + pci_name(pdev), + sis_chip_info[ent->driver_data].name, + ioaddr, pdev->irq, dev->dev_addr); + netdev_info(dev, "%s mode.\n", + (tp->features & F_HAS_RGMII) ? "RGMII" : "GMII"); + } + + netif_carrier_off(dev); + + sis190_set_speed_auto(dev); +out: + return rc; + +err_remove_mii: + sis190_mii_remove(dev); +err_release_board: + sis190_release_board(pdev); + goto out; +} + +static void sis190_remove_one(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct sis190_private *tp = netdev_priv(dev); + + sis190_mii_remove(dev); + cancel_work_sync(&tp->phy_task); + unregister_netdev(dev); + sis190_release_board(pdev); +} + +static struct pci_driver sis190_pci_driver = { + .name = DRV_NAME, + .id_table = sis190_pci_tbl, + .probe = sis190_init_one, + .remove = sis190_remove_one, +}; + +module_pci_driver(sis190_pci_driver); diff --git a/drivers/net/ethernet/sis/sis900.c b/drivers/net/ethernet/sis/sis900.c new file mode 100644 index 000000000..e267b7ce3 --- /dev/null +++ b/drivers/net/ethernet/sis/sis900.c @@ -0,0 +1,2579 @@ +/* sis900.c: A SiS 900/7016 PCI Fast Ethernet driver for Linux. + Copyright 1999 Silicon Integrated System Corporation + Revision: 1.08.10 Apr. 2 2006 + + Modified from the driver which is originally written by Donald Becker. + + This software may be used and distributed according to the terms + of the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on this skeleton fall under the GPL and must retain + the authorship (implicit copyright) notice. + + References: + SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support, + preliminary Rev. 1.0 Jan. 14, 1998 + SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support, + preliminary Rev. 1.0 Nov. 10, 1998 + SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution, + preliminary Rev. 1.0 Jan. 18, 1998 + + Rev 1.08.10 Apr. 2 2006 Daniele Venzano add vlan (jumbo packets) support + Rev 1.08.09 Sep. 19 2005 Daniele Venzano add Wake on LAN support + Rev 1.08.08 Jan. 22 2005 Daniele Venzano use netif_msg for debugging messages + Rev 1.08.07 Nov. 2 2003 Daniele Venzano <venza@brownhat.org> add suspend/resume support + Rev 1.08.06 Sep. 24 2002 Mufasa Yang bug fix for Tx timeout & add SiS963 support + Rev 1.08.05 Jun. 6 2002 Mufasa Yang bug fix for read_eeprom & Tx descriptor over-boundary + Rev 1.08.04 Apr. 25 2002 Mufasa Yang <mufasa@sis.com.tw> added SiS962 support + Rev 1.08.03 Feb. 1 2002 Matt Domsch <Matt_Domsch@dell.com> update to use library crc32 function + Rev 1.08.02 Nov. 30 2001 Hui-Fen Hsu workaround for EDB & bug fix for dhcp problem + Rev 1.08.01 Aug. 25 2001 Hui-Fen Hsu update for 630ET & workaround for ICS1893 PHY + Rev 1.08.00 Jun. 11 2001 Hui-Fen Hsu workaround for RTL8201 PHY and some bug fix + Rev 1.07.11 Apr. 2 2001 Hui-Fen Hsu updates PCI drivers to use the new pci_set_dma_mask for kernel 2.4.3 + Rev 1.07.10 Mar. 1 2001 Hui-Fen Hsu <hfhsu@sis.com.tw> some bug fix & 635M/B support + Rev 1.07.09 Feb. 9 2001 Dave Jones <davej@suse.de> PCI enable cleanup + Rev 1.07.08 Jan. 8 2001 Lei-Chun Chang added RTL8201 PHY support + Rev 1.07.07 Nov. 29 2000 Lei-Chun Chang added kernel-doc extractable documentation and 630 workaround fix + Rev 1.07.06 Nov. 7 2000 Jeff Garzik <jgarzik@pobox.com> some bug fix and cleaning + Rev 1.07.05 Nov. 6 2000 metapirat<metapirat@gmx.de> contribute media type select by ifconfig + Rev 1.07.04 Sep. 6 2000 Lei-Chun Chang added ICS1893 PHY support + Rev 1.07.03 Aug. 24 2000 Lei-Chun Chang (lcchang@sis.com.tw) modified 630E equalizer workaround rule + Rev 1.07.01 Aug. 08 2000 Ollie Lho minor update for SiS 630E and SiS 630E A1 + Rev 1.07 Mar. 07 2000 Ollie Lho bug fix in Rx buffer ring + Rev 1.06.04 Feb. 11 2000 Jeff Garzik <jgarzik@pobox.com> softnet and init for kernel 2.4 + Rev 1.06.03 Dec. 23 1999 Ollie Lho Third release + Rev 1.06.02 Nov. 23 1999 Ollie Lho bug in mac probing fixed + Rev 1.06.01 Nov. 16 1999 Ollie Lho CRC calculation provide by Joseph Zbiciak (im14u2c@primenet.com) + Rev 1.06 Nov. 4 1999 Ollie Lho (ollie@sis.com.tw) Second release + Rev 1.05.05 Oct. 29 1999 Ollie Lho (ollie@sis.com.tw) Single buffer Tx/Rx + Chin-Shan Li (lcs@sis.com.tw) Added AMD Am79c901 HomePNA PHY support + Rev 1.05 Aug. 7 1999 Jim Huang (cmhuang@sis.com.tw) Initial release +*/ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/init.h> +#include <linux/mii.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/delay.h> +#include <linux/ethtool.h> +#include <linux/crc32.h> +#include <linux/bitops.h> +#include <linux/dma-mapping.h> + +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/io.h> +#include <asm/irq.h> +#include <linux/uaccess.h> /* User space memory access functions */ + +#include "sis900.h" + +#define SIS900_MODULE_NAME "sis900" +#define SIS900_DRV_VERSION "v1.08.10 Apr. 2 2006" + +static const char version[] = + KERN_INFO "sis900.c: " SIS900_DRV_VERSION "\n"; + +static int max_interrupt_work = 40; +static int multicast_filter_limit = 128; + +static int sis900_debug = -1; /* Use SIS900_DEF_MSG as value */ + +#define SIS900_DEF_MSG \ + (NETIF_MSG_DRV | \ + NETIF_MSG_LINK | \ + NETIF_MSG_RX_ERR | \ + NETIF_MSG_TX_ERR) + +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (4*HZ) + +enum { + SIS_900 = 0, + SIS_7016 +}; +static const char * card_names[] = { + "SiS 900 PCI Fast Ethernet", + "SiS 7016 PCI Fast Ethernet" +}; + +static const struct pci_device_id sis900_pci_tbl[] = { + {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_900, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_900}, + {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7016, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, SIS_7016}, + {0,} +}; +MODULE_DEVICE_TABLE (pci, sis900_pci_tbl); + +static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex); + +static const struct mii_chip_info { + const char * name; + u16 phy_id0; + u16 phy_id1; + u8 phy_types; +#define HOME 0x0001 +#define LAN 0x0002 +#define MIX 0x0003 +#define UNKNOWN 0x0 +} mii_chip_table[] = { + { "SiS 900 Internal MII PHY", 0x001d, 0x8000, LAN }, + { "SiS 7014 Physical Layer Solution", 0x0016, 0xf830, LAN }, + { "SiS 900 on Foxconn 661 7MI", 0x0143, 0xBC70, LAN }, + { "Altimata AC101LF PHY", 0x0022, 0x5520, LAN }, + { "ADM 7001 LAN PHY", 0x002e, 0xcc60, LAN }, + { "AMD 79C901 10BASE-T PHY", 0x0000, 0x6B70, LAN }, + { "AMD 79C901 HomePNA PHY", 0x0000, 0x6B90, HOME}, + { "ICS LAN PHY", 0x0015, 0xF440, LAN }, + { "ICS LAN PHY", 0x0143, 0xBC70, LAN }, + { "NS 83851 PHY", 0x2000, 0x5C20, MIX }, + { "NS 83847 PHY", 0x2000, 0x5C30, MIX }, + { "Realtek RTL8201 PHY", 0x0000, 0x8200, LAN }, + { "VIA 6103 PHY", 0x0101, 0x8f20, LAN }, + {NULL,}, +}; + +struct mii_phy { + struct mii_phy * next; + int phy_addr; + u16 phy_id0; + u16 phy_id1; + u16 status; + u8 phy_types; +}; + +typedef struct _BufferDesc { + u32 link; + u32 cmdsts; + u32 bufptr; +} BufferDesc; + +struct sis900_private { + struct pci_dev * pci_dev; + + spinlock_t lock; + + struct mii_phy * mii; + struct mii_phy * first_mii; /* record the first mii structure */ + unsigned int cur_phy; + struct mii_if_info mii_info; + + void __iomem *ioaddr; + + struct timer_list timer; /* Link status detection timer. */ + u8 autong_complete; /* 1: auto-negotiate complete */ + + u32 msg_enable; + + unsigned int cur_rx, dirty_rx; /* producer/consumer pointers for Tx/Rx ring */ + unsigned int cur_tx, dirty_tx; + + /* The saved address of a sent/receive-in-place packet buffer */ + struct sk_buff *tx_skbuff[NUM_TX_DESC]; + struct sk_buff *rx_skbuff[NUM_RX_DESC]; + BufferDesc *tx_ring; + BufferDesc *rx_ring; + + dma_addr_t tx_ring_dma; + dma_addr_t rx_ring_dma; + + unsigned int tx_full; /* The Tx queue is full. */ + u8 host_bridge_rev; + u8 chipset_rev; + /* EEPROM data */ + int eeprom_size; +}; + +MODULE_AUTHOR("Jim Huang <cmhuang@sis.com.tw>, Ollie Lho <ollie@sis.com.tw>"); +MODULE_DESCRIPTION("SiS 900 PCI Fast Ethernet driver"); +MODULE_LICENSE("GPL"); + +module_param(multicast_filter_limit, int, 0444); +module_param(max_interrupt_work, int, 0444); +module_param(sis900_debug, int, 0444); +MODULE_PARM_DESC(multicast_filter_limit, "SiS 900/7016 maximum number of filtered multicast addresses"); +MODULE_PARM_DESC(max_interrupt_work, "SiS 900/7016 maximum events handled per interrupt"); +MODULE_PARM_DESC(sis900_debug, "SiS 900/7016 bitmapped debugging message level"); + +#define sw32(reg, val) iowrite32(val, ioaddr + (reg)) +#define sw8(reg, val) iowrite8(val, ioaddr + (reg)) +#define sr32(reg) ioread32(ioaddr + (reg)) +#define sr16(reg) ioread16(ioaddr + (reg)) + +#ifdef CONFIG_NET_POLL_CONTROLLER +static void sis900_poll(struct net_device *dev); +#endif +static int sis900_open(struct net_device *net_dev); +static int sis900_mii_probe (struct net_device * net_dev); +static void sis900_init_rxfilter (struct net_device * net_dev); +static u16 read_eeprom(void __iomem *ioaddr, int location); +static int mdio_read(struct net_device *net_dev, int phy_id, int location); +static void mdio_write(struct net_device *net_dev, int phy_id, int location, int val); +static void sis900_timer(struct timer_list *t); +static void sis900_check_mode (struct net_device *net_dev, struct mii_phy *mii_phy); +static void sis900_tx_timeout(struct net_device *net_dev, unsigned int txqueue); +static void sis900_init_tx_ring(struct net_device *net_dev); +static void sis900_init_rx_ring(struct net_device *net_dev); +static netdev_tx_t sis900_start_xmit(struct sk_buff *skb, + struct net_device *net_dev); +static int sis900_rx(struct net_device *net_dev); +static void sis900_finish_xmit (struct net_device *net_dev); +static irqreturn_t sis900_interrupt(int irq, void *dev_instance); +static int sis900_close(struct net_device *net_dev); +static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd); +static u16 sis900_mcast_bitnr(u8 *addr, u8 revision); +static void set_rx_mode(struct net_device *net_dev); +static void sis900_reset(struct net_device *net_dev); +static void sis630_set_eq(struct net_device *net_dev, u8 revision); +static int sis900_set_config(struct net_device *dev, struct ifmap *map); +static u16 sis900_default_phy(struct net_device * net_dev); +static void sis900_set_capability( struct net_device *net_dev ,struct mii_phy *phy); +static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr); +static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr); +static void sis900_set_mode(struct sis900_private *, int speed, int duplex); +static const struct ethtool_ops sis900_ethtool_ops; + +/** + * sis900_get_mac_addr - Get MAC address for stand alone SiS900 model + * @pci_dev: the sis900 pci device + * @net_dev: the net device to get address for + * + * Older SiS900 and friends, use EEPROM to store MAC address. + * MAC address is read from read_eeprom() into @net_dev->dev_addr. + */ + +static int sis900_get_mac_addr(struct pci_dev *pci_dev, + struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + u16 signature; + int i; + + /* check to see if we have sane EEPROM */ + signature = (u16) read_eeprom(ioaddr, EEPROMSignature); + if (signature == 0xffff || signature == 0x0000) { + printk (KERN_WARNING "%s: Error EEPROM read %x\n", + pci_name(pci_dev), signature); + return 0; + } + + /* get MAC address from EEPROM */ + for (i = 0; i < 3; i++) + ((u16 *)(net_dev->dev_addr))[i] = read_eeprom(ioaddr, i+EEPROMMACAddr); + + return 1; +} + +/** + * sis630e_get_mac_addr - Get MAC address for SiS630E model + * @pci_dev: the sis900 pci device + * @net_dev: the net device to get address for + * + * SiS630E model, use APC CMOS RAM to store MAC address. + * APC CMOS RAM is accessed through ISA bridge. + * MAC address is read into @net_dev->dev_addr. + */ + +static int sis630e_get_mac_addr(struct pci_dev *pci_dev, + struct net_device *net_dev) +{ + struct pci_dev *isa_bridge = NULL; + u8 reg; + int i; + + isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0008, isa_bridge); + if (!isa_bridge) + isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0018, isa_bridge); + if (!isa_bridge) { + printk(KERN_WARNING "%s: Can not find ISA bridge\n", + pci_name(pci_dev)); + return 0; + } + pci_read_config_byte(isa_bridge, 0x48, ®); + pci_write_config_byte(isa_bridge, 0x48, reg | 0x40); + + for (i = 0; i < 6; i++) { + outb(0x09 + i, 0x70); + ((u8 *)(net_dev->dev_addr))[i] = inb(0x71); + } + + pci_write_config_byte(isa_bridge, 0x48, reg & ~0x40); + pci_dev_put(isa_bridge); + + return 1; +} + + +/** + * sis635_get_mac_addr - Get MAC address for SIS635 model + * @pci_dev: the sis900 pci device + * @net_dev: the net device to get address for + * + * SiS635 model, set MAC Reload Bit to load Mac address from APC + * to rfdr. rfdr is accessed through rfcr. MAC address is read into + * @net_dev->dev_addr. + */ + +static int sis635_get_mac_addr(struct pci_dev *pci_dev, + struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + u32 rfcrSave; + u32 i; + + rfcrSave = sr32(rfcr); + + sw32(cr, rfcrSave | RELOAD); + sw32(cr, 0); + + /* disable packet filtering before setting filter */ + sw32(rfcr, rfcrSave & ~RFEN); + + /* load MAC addr to filter data register */ + for (i = 0 ; i < 3 ; i++) { + sw32(rfcr, (i << RFADDR_shift)); + *( ((u16 *)net_dev->dev_addr) + i) = sr16(rfdr); + } + + /* enable packet filtering */ + sw32(rfcr, rfcrSave | RFEN); + + return 1; +} + +/** + * sis96x_get_mac_addr - Get MAC address for SiS962 or SiS963 model + * @pci_dev: the sis900 pci device + * @net_dev: the net device to get address for + * + * SiS962 or SiS963 model, use EEPROM to store MAC address. And EEPROM + * is shared by + * LAN and 1394. When accessing EEPROM, send EEREQ signal to hardware first + * and wait for EEGNT. If EEGNT is ON, EEPROM is permitted to be accessed + * by LAN, otherwise it is not. After MAC address is read from EEPROM, send + * EEDONE signal to refuse EEPROM access by LAN. + * The EEPROM map of SiS962 or SiS963 is different to SiS900. + * The signature field in SiS962 or SiS963 spec is meaningless. + * MAC address is read into @net_dev->dev_addr. + */ + +static int sis96x_get_mac_addr(struct pci_dev *pci_dev, + struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + int wait, rc = 0; + + sw32(mear, EEREQ); + for (wait = 0; wait < 2000; wait++) { + if (sr32(mear) & EEGNT) { + u16 *mac = (u16 *)net_dev->dev_addr; + int i; + + /* get MAC address from EEPROM */ + for (i = 0; i < 3; i++) + mac[i] = read_eeprom(ioaddr, i + EEPROMMACAddr); + + rc = 1; + break; + } + udelay(1); + } + sw32(mear, EEDONE); + return rc; +} + +static const struct net_device_ops sis900_netdev_ops = { + .ndo_open = sis900_open, + .ndo_stop = sis900_close, + .ndo_start_xmit = sis900_start_xmit, + .ndo_set_config = sis900_set_config, + .ndo_set_rx_mode = set_rx_mode, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, + .ndo_do_ioctl = mii_ioctl, + .ndo_tx_timeout = sis900_tx_timeout, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = sis900_poll, +#endif +}; + +/** + * sis900_probe - Probe for sis900 device + * @pci_dev: the sis900 pci device + * @pci_id: the pci device ID + * + * Check and probe sis900 net device for @pci_dev. + * Get mac address according to the chip revision, + * and assign SiS900-specific entries in the device structure. + * ie: sis900_open(), sis900_start_xmit(), sis900_close(), etc. + */ + +static int sis900_probe(struct pci_dev *pci_dev, + const struct pci_device_id *pci_id) +{ + struct sis900_private *sis_priv; + struct net_device *net_dev; + struct pci_dev *dev; + dma_addr_t ring_dma; + void *ring_space; + void __iomem *ioaddr; + int i, ret; + const char *card_name = card_names[pci_id->driver_data]; + const char *dev_name = pci_name(pci_dev); + +/* when built into the kernel, we only print version if device is found */ +#ifndef MODULE + static int printed_version; + if (!printed_version++) + printk(version); +#endif + + /* setup various bits in PCI command register */ + ret = pcim_enable_device(pci_dev); + if(ret) return ret; + + i = dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32)); + if(i){ + printk(KERN_ERR "sis900.c: architecture does not support " + "32bit PCI busmaster DMA\n"); + return i; + } + + pci_set_master(pci_dev); + + net_dev = alloc_etherdev(sizeof(struct sis900_private)); + if (!net_dev) + return -ENOMEM; + SET_NETDEV_DEV(net_dev, &pci_dev->dev); + + /* We do a request_region() to register /proc/ioports info. */ + ret = pci_request_regions(pci_dev, "sis900"); + if (ret) + goto err_out; + + /* IO region. */ + ioaddr = pci_iomap(pci_dev, 0, 0); + if (!ioaddr) { + ret = -ENOMEM; + goto err_out; + } + + sis_priv = netdev_priv(net_dev); + sis_priv->ioaddr = ioaddr; + sis_priv->pci_dev = pci_dev; + spin_lock_init(&sis_priv->lock); + + sis_priv->eeprom_size = 24; + + pci_set_drvdata(pci_dev, net_dev); + + ring_space = dma_alloc_coherent(&pci_dev->dev, TX_TOTAL_SIZE, + &ring_dma, GFP_KERNEL); + if (!ring_space) { + ret = -ENOMEM; + goto err_out_unmap; + } + sis_priv->tx_ring = ring_space; + sis_priv->tx_ring_dma = ring_dma; + + ring_space = dma_alloc_coherent(&pci_dev->dev, RX_TOTAL_SIZE, + &ring_dma, GFP_KERNEL); + if (!ring_space) { + ret = -ENOMEM; + goto err_unmap_tx; + } + sis_priv->rx_ring = ring_space; + sis_priv->rx_ring_dma = ring_dma; + + /* The SiS900-specific entries in the device structure. */ + net_dev->netdev_ops = &sis900_netdev_ops; + net_dev->watchdog_timeo = TX_TIMEOUT; + net_dev->ethtool_ops = &sis900_ethtool_ops; + + if (sis900_debug > 0) + sis_priv->msg_enable = sis900_debug; + else + sis_priv->msg_enable = SIS900_DEF_MSG; + + sis_priv->mii_info.dev = net_dev; + sis_priv->mii_info.mdio_read = mdio_read; + sis_priv->mii_info.mdio_write = mdio_write; + sis_priv->mii_info.phy_id_mask = 0x1f; + sis_priv->mii_info.reg_num_mask = 0x1f; + + /* Get Mac address according to the chip revision */ + sis_priv->chipset_rev = pci_dev->revision; + if(netif_msg_probe(sis_priv)) + printk(KERN_DEBUG "%s: detected revision %2.2x, " + "trying to get MAC address...\n", + dev_name, sis_priv->chipset_rev); + + ret = 0; + if (sis_priv->chipset_rev == SIS630E_900_REV) + ret = sis630e_get_mac_addr(pci_dev, net_dev); + else if ((sis_priv->chipset_rev > 0x81) && (sis_priv->chipset_rev <= 0x90) ) + ret = sis635_get_mac_addr(pci_dev, net_dev); + else if (sis_priv->chipset_rev == SIS96x_900_REV) + ret = sis96x_get_mac_addr(pci_dev, net_dev); + else + ret = sis900_get_mac_addr(pci_dev, net_dev); + + if (!ret || !is_valid_ether_addr(net_dev->dev_addr)) { + eth_hw_addr_random(net_dev); + printk(KERN_WARNING "%s: Unreadable or invalid MAC address," + "using random generated one\n", dev_name); + } + + /* 630ET : set the mii access mode as software-mode */ + if (sis_priv->chipset_rev == SIS630ET_900_REV) + sw32(cr, ACCESSMODE | sr32(cr)); + + /* probe for mii transceiver */ + if (sis900_mii_probe(net_dev) == 0) { + printk(KERN_WARNING "%s: Error probing MII device.\n", + dev_name); + ret = -ENODEV; + goto err_unmap_rx; + } + + /* save our host bridge revision */ + dev = pci_get_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_630, NULL); + if (dev) { + sis_priv->host_bridge_rev = dev->revision; + pci_dev_put(dev); + } + + ret = register_netdev(net_dev); + if (ret) + goto err_unmap_rx; + + /* print some information about our NIC */ + printk(KERN_INFO "%s: %s at 0x%p, IRQ %d, %pM\n", + net_dev->name, card_name, ioaddr, pci_dev->irq, + net_dev->dev_addr); + + /* Detect Wake on Lan support */ + ret = (sr32(CFGPMC) & PMESP) >> 27; + if (netif_msg_probe(sis_priv) && (ret & PME_D3C) == 0) + printk(KERN_INFO "%s: Wake on LAN only available from suspend to RAM.", net_dev->name); + + return 0; + +err_unmap_rx: + dma_free_coherent(&pci_dev->dev, RX_TOTAL_SIZE, sis_priv->rx_ring, + sis_priv->rx_ring_dma); +err_unmap_tx: + dma_free_coherent(&pci_dev->dev, TX_TOTAL_SIZE, sis_priv->tx_ring, + sis_priv->tx_ring_dma); +err_out_unmap: + pci_iounmap(pci_dev, ioaddr); + err_out: + free_netdev(net_dev); + return ret; +} + +/** + * sis900_mii_probe - Probe MII PHY for sis900 + * @net_dev: the net device to probe for + * + * Search for total of 32 possible mii phy addresses. + * Identify and set current phy if found one, + * return error if it failed to found. + */ + +static int sis900_mii_probe(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + const char *dev_name = pci_name(sis_priv->pci_dev); + u16 poll_bit = MII_STAT_LINK, status = 0; + unsigned long timeout = jiffies + 5 * HZ; + int phy_addr; + + sis_priv->mii = NULL; + + /* search for total of 32 possible mii phy addresses */ + for (phy_addr = 0; phy_addr < 32; phy_addr++) { + struct mii_phy * mii_phy = NULL; + u16 mii_status; + int i; + + mii_phy = NULL; + for(i = 0; i < 2; i++) + mii_status = mdio_read(net_dev, phy_addr, MII_STATUS); + + if (mii_status == 0xffff || mii_status == 0x0000) { + if (netif_msg_probe(sis_priv)) + printk(KERN_DEBUG "%s: MII at address %d" + " not accessible\n", + dev_name, phy_addr); + continue; + } + + if ((mii_phy = kmalloc(sizeof(struct mii_phy), GFP_KERNEL)) == NULL) { + mii_phy = sis_priv->first_mii; + while (mii_phy) { + struct mii_phy *phy; + phy = mii_phy; + mii_phy = mii_phy->next; + kfree(phy); + } + return 0; + } + + mii_phy->phy_id0 = mdio_read(net_dev, phy_addr, MII_PHY_ID0); + mii_phy->phy_id1 = mdio_read(net_dev, phy_addr, MII_PHY_ID1); + mii_phy->phy_addr = phy_addr; + mii_phy->status = mii_status; + mii_phy->next = sis_priv->mii; + sis_priv->mii = mii_phy; + sis_priv->first_mii = mii_phy; + + for (i = 0; mii_chip_table[i].phy_id1; i++) + if ((mii_phy->phy_id0 == mii_chip_table[i].phy_id0 ) && + ((mii_phy->phy_id1 & 0xFFF0) == mii_chip_table[i].phy_id1)){ + mii_phy->phy_types = mii_chip_table[i].phy_types; + if (mii_chip_table[i].phy_types == MIX) + mii_phy->phy_types = + (mii_status & (MII_STAT_CAN_TX_FDX | MII_STAT_CAN_TX)) ? LAN : HOME; + printk(KERN_INFO "%s: %s transceiver found " + "at address %d.\n", + dev_name, + mii_chip_table[i].name, + phy_addr); + break; + } + + if( !mii_chip_table[i].phy_id1 ) { + printk(KERN_INFO "%s: Unknown PHY transceiver found at address %d.\n", + dev_name, phy_addr); + mii_phy->phy_types = UNKNOWN; + } + } + + if (sis_priv->mii == NULL) { + printk(KERN_INFO "%s: No MII transceivers found!\n", dev_name); + return 0; + } + + /* select default PHY for mac */ + sis_priv->mii = NULL; + sis900_default_phy( net_dev ); + + /* Reset phy if default phy is internal sis900 */ + if ((sis_priv->mii->phy_id0 == 0x001D) && + ((sis_priv->mii->phy_id1&0xFFF0) == 0x8000)) + status = sis900_reset_phy(net_dev, sis_priv->cur_phy); + + /* workaround for ICS1893 PHY */ + if ((sis_priv->mii->phy_id0 == 0x0015) && + ((sis_priv->mii->phy_id1&0xFFF0) == 0xF440)) + mdio_write(net_dev, sis_priv->cur_phy, 0x0018, 0xD200); + + if(status & MII_STAT_LINK){ + while (poll_bit) { + yield(); + + poll_bit ^= (mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS) & poll_bit); + if (time_after_eq(jiffies, timeout)) { + printk(KERN_WARNING "%s: reset phy and link down now\n", + dev_name); + return -ETIME; + } + } + } + + if (sis_priv->chipset_rev == SIS630E_900_REV) { + /* SiS 630E has some bugs on default value of PHY registers */ + mdio_write(net_dev, sis_priv->cur_phy, MII_ANADV, 0x05e1); + mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG1, 0x22); + mdio_write(net_dev, sis_priv->cur_phy, MII_CONFIG2, 0xff00); + mdio_write(net_dev, sis_priv->cur_phy, MII_MASK, 0xffc0); + //mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, 0x1000); + } + + if (sis_priv->mii->status & MII_STAT_LINK) + netif_carrier_on(net_dev); + else + netif_carrier_off(net_dev); + + return 1; +} + +/** + * sis900_default_phy - Select default PHY for sis900 mac. + * @net_dev: the net device to probe for + * + * Select first detected PHY with link as default. + * If no one is link on, select PHY whose types is HOME as default. + * If HOME doesn't exist, select LAN. + */ + +static u16 sis900_default_phy(struct net_device * net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + struct mii_phy *phy = NULL, *phy_home = NULL, + *default_phy = NULL, *phy_lan = NULL; + u16 status; + + for (phy=sis_priv->first_mii; phy; phy=phy->next) { + status = mdio_read(net_dev, phy->phy_addr, MII_STATUS); + status = mdio_read(net_dev, phy->phy_addr, MII_STATUS); + + /* Link ON & Not select default PHY & not ghost PHY */ + if ((status & MII_STAT_LINK) && !default_phy && + (phy->phy_types != UNKNOWN)) { + default_phy = phy; + } else { + status = mdio_read(net_dev, phy->phy_addr, MII_CONTROL); + mdio_write(net_dev, phy->phy_addr, MII_CONTROL, + status | MII_CNTL_AUTO | MII_CNTL_ISOLATE); + if (phy->phy_types == HOME) + phy_home = phy; + else if(phy->phy_types == LAN) + phy_lan = phy; + } + } + + if (!default_phy && phy_home) + default_phy = phy_home; + else if (!default_phy && phy_lan) + default_phy = phy_lan; + else if (!default_phy) + default_phy = sis_priv->first_mii; + + if (sis_priv->mii != default_phy) { + sis_priv->mii = default_phy; + sis_priv->cur_phy = default_phy->phy_addr; + printk(KERN_INFO "%s: Using transceiver found at address %d as default\n", + pci_name(sis_priv->pci_dev), sis_priv->cur_phy); + } + + sis_priv->mii_info.phy_id = sis_priv->cur_phy; + + status = mdio_read(net_dev, sis_priv->cur_phy, MII_CONTROL); + status &= (~MII_CNTL_ISOLATE); + + mdio_write(net_dev, sis_priv->cur_phy, MII_CONTROL, status); + status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS); + status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS); + + return status; +} + + +/** + * sis900_set_capability - set the media capability of network adapter. + * @net_dev : the net device to probe for + * @phy : default PHY + * + * Set the media capability of network adapter according to + * mii status register. It's necessary before auto-negotiate. + */ + +static void sis900_set_capability(struct net_device *net_dev, struct mii_phy *phy) +{ + u16 cap; + + mdio_read(net_dev, phy->phy_addr, MII_STATUS); + mdio_read(net_dev, phy->phy_addr, MII_STATUS); + + cap = MII_NWAY_CSMA_CD | + ((phy->status & MII_STAT_CAN_TX_FDX)? MII_NWAY_TX_FDX:0) | + ((phy->status & MII_STAT_CAN_TX) ? MII_NWAY_TX:0) | + ((phy->status & MII_STAT_CAN_T_FDX) ? MII_NWAY_T_FDX:0)| + ((phy->status & MII_STAT_CAN_T) ? MII_NWAY_T:0); + + mdio_write(net_dev, phy->phy_addr, MII_ANADV, cap); +} + + +/* Delay between EEPROM clock transitions. */ +#define eeprom_delay() sr32(mear) + +/** + * read_eeprom - Read Serial EEPROM + * @ioaddr: base i/o address + * @location: the EEPROM location to read + * + * Read Serial EEPROM through EEPROM Access Register. + * Note that location is in word (16 bits) unit + */ + +static u16 read_eeprom(void __iomem *ioaddr, int location) +{ + u32 read_cmd = location | EEread; + int i; + u16 retval = 0; + + sw32(mear, 0); + eeprom_delay(); + sw32(mear, EECS); + eeprom_delay(); + + /* Shift the read command (9) bits out. */ + for (i = 8; i >= 0; i--) { + u32 dataval = (read_cmd & (1 << i)) ? EEDI | EECS : EECS; + + sw32(mear, dataval); + eeprom_delay(); + sw32(mear, dataval | EECLK); + eeprom_delay(); + } + sw32(mear, EECS); + eeprom_delay(); + + /* read the 16-bits data in */ + for (i = 16; i > 0; i--) { + sw32(mear, EECS); + eeprom_delay(); + sw32(mear, EECS | EECLK); + eeprom_delay(); + retval = (retval << 1) | ((sr32(mear) & EEDO) ? 1 : 0); + eeprom_delay(); + } + + /* Terminate the EEPROM access. */ + sw32(mear, 0); + eeprom_delay(); + + return retval; +} + +/* Read and write the MII management registers using software-generated + serial MDIO protocol. Note that the command bits and data bits are + send out separately */ +#define mdio_delay() sr32(mear) + +static void mdio_idle(struct sis900_private *sp) +{ + void __iomem *ioaddr = sp->ioaddr; + + sw32(mear, MDIO | MDDIR); + mdio_delay(); + sw32(mear, MDIO | MDDIR | MDC); +} + +/* Synchronize the MII management interface by shifting 32 one bits out. */ +static void mdio_reset(struct sis900_private *sp) +{ + void __iomem *ioaddr = sp->ioaddr; + int i; + + for (i = 31; i >= 0; i--) { + sw32(mear, MDDIR | MDIO); + mdio_delay(); + sw32(mear, MDDIR | MDIO | MDC); + mdio_delay(); + } +} + +/** + * mdio_read - read MII PHY register + * @net_dev: the net device to read + * @phy_id: the phy address to read + * @location: the phy register id to read + * + * Read MII registers through MDIO and MDC + * using MDIO management frame structure and protocol(defined by ISO/IEC). + * Please see SiS7014 or ICS spec + */ + +static int mdio_read(struct net_device *net_dev, int phy_id, int location) +{ + int mii_cmd = MIIread|(phy_id<<MIIpmdShift)|(location<<MIIregShift); + struct sis900_private *sp = netdev_priv(net_dev); + void __iomem *ioaddr = sp->ioaddr; + u16 retval = 0; + int i; + + mdio_reset(sp); + mdio_idle(sp); + + for (i = 15; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR; + + sw32(mear, dataval); + mdio_delay(); + sw32(mear, dataval | MDC); + mdio_delay(); + } + + /* Read the 16 data bits. */ + for (i = 16; i > 0; i--) { + sw32(mear, 0); + mdio_delay(); + retval = (retval << 1) | ((sr32(mear) & MDIO) ? 1 : 0); + sw32(mear, MDC); + mdio_delay(); + } + sw32(mear, 0x00); + + return retval; +} + +/** + * mdio_write - write MII PHY register + * @net_dev: the net device to write + * @phy_id: the phy address to write + * @location: the phy register id to write + * @value: the register value to write with + * + * Write MII registers with @value through MDIO and MDC + * using MDIO management frame structure and protocol(defined by ISO/IEC) + * please see SiS7014 or ICS spec + */ + +static void mdio_write(struct net_device *net_dev, int phy_id, int location, + int value) +{ + int mii_cmd = MIIwrite|(phy_id<<MIIpmdShift)|(location<<MIIregShift); + struct sis900_private *sp = netdev_priv(net_dev); + void __iomem *ioaddr = sp->ioaddr; + int i; + + mdio_reset(sp); + mdio_idle(sp); + + /* Shift the command bits out. */ + for (i = 15; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDDIR | MDIO : MDDIR; + + sw8(mear, dataval); + mdio_delay(); + sw8(mear, dataval | MDC); + mdio_delay(); + } + mdio_delay(); + + /* Shift the value bits out. */ + for (i = 15; i >= 0; i--) { + int dataval = (value & (1 << i)) ? MDDIR | MDIO : MDDIR; + + sw32(mear, dataval); + mdio_delay(); + sw32(mear, dataval | MDC); + mdio_delay(); + } + mdio_delay(); + + /* Clear out extra bits. */ + for (i = 2; i > 0; i--) { + sw8(mear, 0); + mdio_delay(); + sw8(mear, MDC); + mdio_delay(); + } + sw32(mear, 0x00); +} + + +/** + * sis900_reset_phy - reset sis900 mii phy. + * @net_dev: the net device to write + * @phy_addr: default phy address + * + * Some specific phy can't work properly without reset. + * This function will be called during initialization and + * link status change from ON to DOWN. + */ + +static u16 sis900_reset_phy(struct net_device *net_dev, int phy_addr) +{ + int i; + u16 status; + + for (i = 0; i < 2; i++) + status = mdio_read(net_dev, phy_addr, MII_STATUS); + + mdio_write( net_dev, phy_addr, MII_CONTROL, MII_CNTL_RESET ); + + return status; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +/* + * Polling 'interrupt' - used by things like netconsole to send skbs + * without having to re-enable interrupts. It's not called while + * the interrupt routine is executing. +*/ +static void sis900_poll(struct net_device *dev) +{ + struct sis900_private *sp = netdev_priv(dev); + const int irq = sp->pci_dev->irq; + + disable_irq(irq); + sis900_interrupt(irq, dev); + enable_irq(irq); +} +#endif + +/** + * sis900_open - open sis900 device + * @net_dev: the net device to open + * + * Do some initialization and start net interface. + * enable interrupts and set sis900 timer. + */ + +static int +sis900_open(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + int ret; + + /* Soft reset the chip. */ + sis900_reset(net_dev); + + /* Equalizer workaround Rule */ + sis630_set_eq(net_dev, sis_priv->chipset_rev); + + ret = request_irq(sis_priv->pci_dev->irq, sis900_interrupt, IRQF_SHARED, + net_dev->name, net_dev); + if (ret) + return ret; + + sis900_init_rxfilter(net_dev); + + sis900_init_tx_ring(net_dev); + sis900_init_rx_ring(net_dev); + + set_rx_mode(net_dev); + + netif_start_queue(net_dev); + + /* Workaround for EDB */ + sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED); + + /* Enable all known interrupts by setting the interrupt mask. */ + sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC); + sw32(cr, RxENA | sr32(cr)); + sw32(ier, IE); + + sis900_check_mode(net_dev, sis_priv->mii); + + /* Set the timer to switch to check for link beat and perhaps switch + to an alternate media type. */ + timer_setup(&sis_priv->timer, sis900_timer, 0); + sis_priv->timer.expires = jiffies + HZ; + add_timer(&sis_priv->timer); + + return 0; +} + +/** + * sis900_init_rxfilter - Initialize the Rx filter + * @net_dev: the net device to initialize for + * + * Set receive filter address to our MAC address + * and enable packet filtering. + */ + +static void +sis900_init_rxfilter (struct net_device * net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + u32 rfcrSave; + u32 i; + + rfcrSave = sr32(rfcr); + + /* disable packet filtering before setting filter */ + sw32(rfcr, rfcrSave & ~RFEN); + + /* load MAC addr to filter data register */ + for (i = 0 ; i < 3 ; i++) { + u32 w = (u32) *((u16 *)(net_dev->dev_addr)+i); + + sw32(rfcr, i << RFADDR_shift); + sw32(rfdr, w); + + if (netif_msg_hw(sis_priv)) { + printk(KERN_DEBUG "%s: Receive Filter Address[%d]=%x\n", + net_dev->name, i, sr32(rfdr)); + } + } + + /* enable packet filtering */ + sw32(rfcr, rfcrSave | RFEN); +} + +/** + * sis900_init_tx_ring - Initialize the Tx descriptor ring + * @net_dev: the net device to initialize for + * + * Initialize the Tx descriptor ring, + */ + +static void +sis900_init_tx_ring(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + int i; + + sis_priv->tx_full = 0; + sis_priv->dirty_tx = sis_priv->cur_tx = 0; + + for (i = 0; i < NUM_TX_DESC; i++) { + sis_priv->tx_skbuff[i] = NULL; + + sis_priv->tx_ring[i].link = sis_priv->tx_ring_dma + + ((i+1)%NUM_TX_DESC)*sizeof(BufferDesc); + sis_priv->tx_ring[i].cmdsts = 0; + sis_priv->tx_ring[i].bufptr = 0; + } + + /* load Transmit Descriptor Register */ + sw32(txdp, sis_priv->tx_ring_dma); + if (netif_msg_hw(sis_priv)) + printk(KERN_DEBUG "%s: TX descriptor register loaded with: %8.8x\n", + net_dev->name, sr32(txdp)); +} + +/** + * sis900_init_rx_ring - Initialize the Rx descriptor ring + * @net_dev: the net device to initialize for + * + * Initialize the Rx descriptor ring, + * and pre-allocate receive buffers (socket buffer) + */ + +static void +sis900_init_rx_ring(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + int i; + + sis_priv->cur_rx = 0; + sis_priv->dirty_rx = 0; + + /* init RX descriptor */ + for (i = 0; i < NUM_RX_DESC; i++) { + sis_priv->rx_skbuff[i] = NULL; + + sis_priv->rx_ring[i].link = sis_priv->rx_ring_dma + + ((i+1)%NUM_RX_DESC)*sizeof(BufferDesc); + sis_priv->rx_ring[i].cmdsts = 0; + sis_priv->rx_ring[i].bufptr = 0; + } + + /* allocate sock buffers */ + for (i = 0; i < NUM_RX_DESC; i++) { + struct sk_buff *skb; + + if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) { + /* not enough memory for skbuff, this makes a "hole" + on the buffer ring, it is not clear how the + hardware will react to this kind of degenerated + buffer */ + break; + } + sis_priv->rx_skbuff[i] = skb; + sis_priv->rx_ring[i].cmdsts = RX_BUF_SIZE; + sis_priv->rx_ring[i].bufptr = dma_map_single(&sis_priv->pci_dev->dev, + skb->data, + RX_BUF_SIZE, + DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev, + sis_priv->rx_ring[i].bufptr))) { + dev_kfree_skb(skb); + sis_priv->rx_skbuff[i] = NULL; + break; + } + } + sis_priv->dirty_rx = (unsigned int) (i - NUM_RX_DESC); + + /* load Receive Descriptor Register */ + sw32(rxdp, sis_priv->rx_ring_dma); + if (netif_msg_hw(sis_priv)) + printk(KERN_DEBUG "%s: RX descriptor register loaded with: %8.8x\n", + net_dev->name, sr32(rxdp)); +} + +/** + * sis630_set_eq - set phy equalizer value for 630 LAN + * @net_dev: the net device to set equalizer value + * @revision: 630 LAN revision number + * + * 630E equalizer workaround rule(Cyrus Huang 08/15) + * PHY register 14h(Test) + * Bit 14: 0 -- Automatically detect (default) + * 1 -- Manually set Equalizer filter + * Bit 13: 0 -- (Default) + * 1 -- Speed up convergence of equalizer setting + * Bit 9 : 0 -- (Default) + * 1 -- Disable Baseline Wander + * Bit 3~7 -- Equalizer filter setting + * Link ON: Set Bit 9, 13 to 1, Bit 14 to 0 + * Then calculate equalizer value + * Then set equalizer value, and set Bit 14 to 1, Bit 9 to 0 + * Link Off:Set Bit 13 to 1, Bit 14 to 0 + * Calculate Equalizer value: + * When Link is ON and Bit 14 is 0, SIS900PHY will auto-detect proper equalizer value. + * When the equalizer is stable, this value is not a fixed value. It will be within + * a small range(eg. 7~9). Then we get a minimum and a maximum value(eg. min=7, max=9) + * 0 <= max <= 4 --> set equalizer to max + * 5 <= max <= 14 --> set equalizer to max+1 or set equalizer to max+2 if max == min + * max >= 15 --> set equalizer to max+5 or set equalizer to max+6 if max == min + */ + +static void sis630_set_eq(struct net_device *net_dev, u8 revision) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + u16 reg14h, eq_value=0, max_value=0, min_value=0; + int i, maxcount=10; + + if ( !(revision == SIS630E_900_REV || revision == SIS630EA1_900_REV || + revision == SIS630A_900_REV || revision == SIS630ET_900_REV) ) + return; + + if (netif_carrier_ok(net_dev)) { + reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV); + mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, + (0x2200 | reg14h) & 0xBFFF); + for (i=0; i < maxcount; i++) { + eq_value = (0x00F8 & mdio_read(net_dev, + sis_priv->cur_phy, MII_RESV)) >> 3; + if (i == 0) + max_value=min_value=eq_value; + max_value = (eq_value > max_value) ? + eq_value : max_value; + min_value = (eq_value < min_value) ? + eq_value : min_value; + } + /* 630E rule to determine the equalizer value */ + if (revision == SIS630E_900_REV || revision == SIS630EA1_900_REV || + revision == SIS630ET_900_REV) { + if (max_value < 5) + eq_value = max_value; + else if (max_value >= 5 && max_value < 15) + eq_value = (max_value == min_value) ? + max_value+2 : max_value+1; + else if (max_value >= 15) + eq_value=(max_value == min_value) ? + max_value+6 : max_value+5; + } + /* 630B0&B1 rule to determine the equalizer value */ + if (revision == SIS630A_900_REV && + (sis_priv->host_bridge_rev == SIS630B0 || + sis_priv->host_bridge_rev == SIS630B1)) { + if (max_value == 0) + eq_value = 3; + else + eq_value = (max_value + min_value + 1)/2; + } + /* write equalizer value and setting */ + reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV); + reg14h = (reg14h & 0xFF07) | ((eq_value << 3) & 0x00F8); + reg14h = (reg14h | 0x6000) & 0xFDFF; + mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, reg14h); + } else { + reg14h = mdio_read(net_dev, sis_priv->cur_phy, MII_RESV); + if (revision == SIS630A_900_REV && + (sis_priv->host_bridge_rev == SIS630B0 || + sis_priv->host_bridge_rev == SIS630B1)) + mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, + (reg14h | 0x2200) & 0xBFFF); + else + mdio_write(net_dev, sis_priv->cur_phy, MII_RESV, + (reg14h | 0x2000) & 0xBFFF); + } +} + +/** + * sis900_timer - sis900 timer routine + * @t: timer list containing a pointer to sis900 net device + * + * On each timer ticks we check two things, + * link status (ON/OFF) and link mode (10/100/Full/Half) + */ + +static void sis900_timer(struct timer_list *t) +{ + struct sis900_private *sis_priv = from_timer(sis_priv, t, timer); + struct net_device *net_dev = sis_priv->mii_info.dev; + struct mii_phy *mii_phy = sis_priv->mii; + static const int next_tick = 5*HZ; + int speed = 0, duplex = 0; + u16 status; + + status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS); + status = mdio_read(net_dev, sis_priv->cur_phy, MII_STATUS); + + /* Link OFF -> ON */ + if (!netif_carrier_ok(net_dev)) { + LookForLink: + /* Search for new PHY */ + status = sis900_default_phy(net_dev); + mii_phy = sis_priv->mii; + + if (status & MII_STAT_LINK) { + WARN_ON(!(status & MII_STAT_AUTO_DONE)); + + sis900_read_mode(net_dev, &speed, &duplex); + if (duplex) { + sis900_set_mode(sis_priv, speed, duplex); + sis630_set_eq(net_dev, sis_priv->chipset_rev); + netif_carrier_on(net_dev); + } + } + } else { + /* Link ON -> OFF */ + if (!(status & MII_STAT_LINK)){ + netif_carrier_off(net_dev); + if(netif_msg_link(sis_priv)) + printk(KERN_INFO "%s: Media Link Off\n", net_dev->name); + + /* Change mode issue */ + if ((mii_phy->phy_id0 == 0x001D) && + ((mii_phy->phy_id1 & 0xFFF0) == 0x8000)) + sis900_reset_phy(net_dev, sis_priv->cur_phy); + + sis630_set_eq(net_dev, sis_priv->chipset_rev); + + goto LookForLink; + } + } + + sis_priv->timer.expires = jiffies + next_tick; + add_timer(&sis_priv->timer); +} + +/** + * sis900_check_mode - check the media mode for sis900 + * @net_dev: the net device to be checked + * @mii_phy: the mii phy + * + * Older driver gets the media mode from mii status output + * register. Now we set our media capability and auto-negotiate + * to get the upper bound of speed and duplex between two ends. + * If the types of mii phy is HOME, it doesn't need to auto-negotiate + * and autong_complete should be set to 1. + */ + +static void sis900_check_mode(struct net_device *net_dev, struct mii_phy *mii_phy) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + int speed, duplex; + + if (mii_phy->phy_types == LAN) { + sw32(cfg, ~EXD & sr32(cfg)); + sis900_set_capability(net_dev , mii_phy); + sis900_auto_negotiate(net_dev, sis_priv->cur_phy); + } else { + sw32(cfg, EXD | sr32(cfg)); + speed = HW_SPEED_HOME; + duplex = FDX_CAPABLE_HALF_SELECTED; + sis900_set_mode(sis_priv, speed, duplex); + sis_priv->autong_complete = 1; + } +} + +/** + * sis900_set_mode - Set the media mode of mac register. + * @sp: the device private data + * @speed : the transmit speed to be determined + * @duplex: the duplex mode to be determined + * + * Set the media mode of mac register txcfg/rxcfg according to + * speed and duplex of phy. Bit EDB_MASTER_EN indicates the EDB + * bus is used instead of PCI bus. When this bit is set 1, the + * Max DMA Burst Size for TX/RX DMA should be no larger than 16 + * double words. + */ + +static void sis900_set_mode(struct sis900_private *sp, int speed, int duplex) +{ + void __iomem *ioaddr = sp->ioaddr; + u32 tx_flags = 0, rx_flags = 0; + + if (sr32( cfg) & EDB_MASTER_EN) { + tx_flags = TxATP | (DMA_BURST_64 << TxMXDMA_shift) | + (TX_FILL_THRESH << TxFILLT_shift); + rx_flags = DMA_BURST_64 << RxMXDMA_shift; + } else { + tx_flags = TxATP | (DMA_BURST_512 << TxMXDMA_shift) | + (TX_FILL_THRESH << TxFILLT_shift); + rx_flags = DMA_BURST_512 << RxMXDMA_shift; + } + + if (speed == HW_SPEED_HOME || speed == HW_SPEED_10_MBPS) { + rx_flags |= (RxDRNT_10 << RxDRNT_shift); + tx_flags |= (TxDRNT_10 << TxDRNT_shift); + } else { + rx_flags |= (RxDRNT_100 << RxDRNT_shift); + tx_flags |= (TxDRNT_100 << TxDRNT_shift); + } + + if (duplex == FDX_CAPABLE_FULL_SELECTED) { + tx_flags |= (TxCSI | TxHBI); + rx_flags |= RxATX; + } + +#if IS_ENABLED(CONFIG_VLAN_8021Q) + /* Can accept Jumbo packet */ + rx_flags |= RxAJAB; +#endif + + sw32(txcfg, tx_flags); + sw32(rxcfg, rx_flags); +} + +/** + * sis900_auto_negotiate - Set the Auto-Negotiation Enable/Reset bit. + * @net_dev: the net device to read mode for + * @phy_addr: mii phy address + * + * If the adapter is link-on, set the auto-negotiate enable/reset bit. + * autong_complete should be set to 0 when starting auto-negotiation. + * autong_complete should be set to 1 if we didn't start auto-negotiation. + * sis900_timer will wait for link on again if autong_complete = 0. + */ + +static void sis900_auto_negotiate(struct net_device *net_dev, int phy_addr) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + int i = 0; + u32 status; + + for (i = 0; i < 2; i++) + status = mdio_read(net_dev, phy_addr, MII_STATUS); + + if (!(status & MII_STAT_LINK)){ + if(netif_msg_link(sis_priv)) + printk(KERN_INFO "%s: Media Link Off\n", net_dev->name); + sis_priv->autong_complete = 1; + netif_carrier_off(net_dev); + return; + } + + /* (Re)start AutoNegotiate */ + mdio_write(net_dev, phy_addr, MII_CONTROL, + MII_CNTL_AUTO | MII_CNTL_RST_AUTO); + sis_priv->autong_complete = 0; +} + + +/** + * sis900_read_mode - read media mode for sis900 internal phy + * @net_dev: the net device to read mode for + * @speed : the transmit speed to be determined + * @duplex : the duplex mode to be determined + * + * The capability of remote end will be put in mii register autorec + * after auto-negotiation. Use AND operation to get the upper bound + * of speed and duplex between two ends. + */ + +static void sis900_read_mode(struct net_device *net_dev, int *speed, int *duplex) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + struct mii_phy *phy = sis_priv->mii; + int phy_addr = sis_priv->cur_phy; + u32 status; + u16 autoadv, autorec; + int i; + + for (i = 0; i < 2; i++) + status = mdio_read(net_dev, phy_addr, MII_STATUS); + + if (!(status & MII_STAT_LINK)) + return; + + /* AutoNegotiate completed */ + autoadv = mdio_read(net_dev, phy_addr, MII_ANADV); + autorec = mdio_read(net_dev, phy_addr, MII_ANLPAR); + status = autoadv & autorec; + + *speed = HW_SPEED_10_MBPS; + *duplex = FDX_CAPABLE_HALF_SELECTED; + + if (status & (MII_NWAY_TX | MII_NWAY_TX_FDX)) + *speed = HW_SPEED_100_MBPS; + if (status & ( MII_NWAY_TX_FDX | MII_NWAY_T_FDX)) + *duplex = FDX_CAPABLE_FULL_SELECTED; + + sis_priv->autong_complete = 1; + + /* Workaround for Realtek RTL8201 PHY issue */ + if ((phy->phy_id0 == 0x0000) && ((phy->phy_id1 & 0xFFF0) == 0x8200)) { + if (mdio_read(net_dev, phy_addr, MII_CONTROL) & MII_CNTL_FDX) + *duplex = FDX_CAPABLE_FULL_SELECTED; + if (mdio_read(net_dev, phy_addr, 0x0019) & 0x01) + *speed = HW_SPEED_100_MBPS; + } + + if(netif_msg_link(sis_priv)) + printk(KERN_INFO "%s: Media Link On %s %s-duplex\n", + net_dev->name, + *speed == HW_SPEED_100_MBPS ? + "100mbps" : "10mbps", + *duplex == FDX_CAPABLE_FULL_SELECTED ? + "full" : "half"); +} + +/** + * sis900_tx_timeout - sis900 transmit timeout routine + * @net_dev: the net device to transmit + * @txqueue: index of hanging queue + * + * print transmit timeout status + * disable interrupts and do some tasks + */ + +static void sis900_tx_timeout(struct net_device *net_dev, unsigned int txqueue) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + unsigned long flags; + int i; + + if (netif_msg_tx_err(sis_priv)) { + printk(KERN_INFO "%s: Transmit timeout, status %8.8x %8.8x\n", + net_dev->name, sr32(cr), sr32(isr)); + } + + /* Disable interrupts by clearing the interrupt mask. */ + sw32(imr, 0x0000); + + /* use spinlock to prevent interrupt handler accessing buffer ring */ + spin_lock_irqsave(&sis_priv->lock, flags); + + /* discard unsent packets */ + sis_priv->dirty_tx = sis_priv->cur_tx = 0; + for (i = 0; i < NUM_TX_DESC; i++) { + struct sk_buff *skb = sis_priv->tx_skbuff[i]; + + if (skb) { + dma_unmap_single(&sis_priv->pci_dev->dev, + sis_priv->tx_ring[i].bufptr, + skb->len, DMA_TO_DEVICE); + dev_kfree_skb_irq(skb); + sis_priv->tx_skbuff[i] = NULL; + sis_priv->tx_ring[i].cmdsts = 0; + sis_priv->tx_ring[i].bufptr = 0; + net_dev->stats.tx_dropped++; + } + } + sis_priv->tx_full = 0; + netif_wake_queue(net_dev); + + spin_unlock_irqrestore(&sis_priv->lock, flags); + + netif_trans_update(net_dev); /* prevent tx timeout */ + + /* load Transmit Descriptor Register */ + sw32(txdp, sis_priv->tx_ring_dma); + + /* Enable all known interrupts by setting the interrupt mask. */ + sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC); +} + +/** + * sis900_start_xmit - sis900 start transmit routine + * @skb: socket buffer pointer to put the data being transmitted + * @net_dev: the net device to transmit with + * + * Set the transmit buffer descriptor, + * and write TxENA to enable transmit state machine. + * tell upper layer if the buffer is full + */ + +static netdev_tx_t +sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + unsigned int entry; + unsigned long flags; + unsigned int index_cur_tx, index_dirty_tx; + unsigned int count_dirty_tx; + + spin_lock_irqsave(&sis_priv->lock, flags); + + /* Calculate the next Tx descriptor entry. */ + entry = sis_priv->cur_tx % NUM_TX_DESC; + sis_priv->tx_skbuff[entry] = skb; + + /* set the transmit buffer descriptor and enable Transmit State Machine */ + sis_priv->tx_ring[entry].bufptr = dma_map_single(&sis_priv->pci_dev->dev, + skb->data, skb->len, + DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev, + sis_priv->tx_ring[entry].bufptr))) { + dev_kfree_skb_any(skb); + sis_priv->tx_skbuff[entry] = NULL; + net_dev->stats.tx_dropped++; + spin_unlock_irqrestore(&sis_priv->lock, flags); + return NETDEV_TX_OK; + } + sis_priv->tx_ring[entry].cmdsts = (OWN | INTR | skb->len); + sw32(cr, TxENA | sr32(cr)); + + sis_priv->cur_tx ++; + index_cur_tx = sis_priv->cur_tx; + index_dirty_tx = sis_priv->dirty_tx; + + for (count_dirty_tx = 0; index_cur_tx != index_dirty_tx; index_dirty_tx++) + count_dirty_tx ++; + + if (index_cur_tx == index_dirty_tx) { + /* dirty_tx is met in the cycle of cur_tx, buffer full */ + sis_priv->tx_full = 1; + netif_stop_queue(net_dev); + } else if (count_dirty_tx < NUM_TX_DESC) { + /* Typical path, tell upper layer that more transmission is possible */ + netif_start_queue(net_dev); + } else { + /* buffer full, tell upper layer no more transmission */ + sis_priv->tx_full = 1; + netif_stop_queue(net_dev); + } + + spin_unlock_irqrestore(&sis_priv->lock, flags); + + if (netif_msg_tx_queued(sis_priv)) + printk(KERN_DEBUG "%s: Queued Tx packet at %p size %d " + "to slot %d.\n", + net_dev->name, skb->data, (int)skb->len, entry); + + return NETDEV_TX_OK; +} + +/** + * sis900_interrupt - sis900 interrupt handler + * @irq: the irq number + * @dev_instance: the client data object + * + * The interrupt handler does all of the Rx thread work, + * and cleans up after the Tx thread + */ + +static irqreturn_t sis900_interrupt(int irq, void *dev_instance) +{ + struct net_device *net_dev = dev_instance; + struct sis900_private *sis_priv = netdev_priv(net_dev); + int boguscnt = max_interrupt_work; + void __iomem *ioaddr = sis_priv->ioaddr; + u32 status; + unsigned int handled = 0; + + spin_lock (&sis_priv->lock); + + do { + status = sr32(isr); + + if ((status & (HIBERR|TxURN|TxERR|TxDESC|RxORN|RxERR|RxOK)) == 0) + /* nothing interesting happened */ + break; + handled = 1; + + /* why dow't we break after Tx/Rx case ?? keyword: full-duplex */ + if (status & (RxORN | RxERR | RxOK)) + /* Rx interrupt */ + sis900_rx(net_dev); + + if (status & (TxURN | TxERR | TxDESC)) + /* Tx interrupt */ + sis900_finish_xmit(net_dev); + + /* something strange happened !!! */ + if (status & HIBERR) { + if(netif_msg_intr(sis_priv)) + printk(KERN_INFO "%s: Abnormal interrupt, " + "status %#8.8x.\n", net_dev->name, status); + break; + } + if (--boguscnt < 0) { + if(netif_msg_intr(sis_priv)) + printk(KERN_INFO "%s: Too much work at interrupt, " + "interrupt status = %#8.8x.\n", + net_dev->name, status); + break; + } + } while (1); + + if(netif_msg_intr(sis_priv)) + printk(KERN_DEBUG "%s: exiting interrupt, " + "interrupt status = %#8.8x\n", + net_dev->name, sr32(isr)); + + spin_unlock (&sis_priv->lock); + return IRQ_RETVAL(handled); +} + +/** + * sis900_rx - sis900 receive routine + * @net_dev: the net device which receives data + * + * Process receive interrupt events, + * put buffer to higher layer and refill buffer pool + * Note: This function is called by interrupt handler, + * don't do "too much" work here + */ + +static int sis900_rx(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC; + u32 rx_status = sis_priv->rx_ring[entry].cmdsts; + int rx_work_limit; + + if (netif_msg_rx_status(sis_priv)) + printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d " + "status:0x%8.8x\n", + sis_priv->cur_rx, sis_priv->dirty_rx, rx_status); + rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx; + + while (rx_status & OWN) { + unsigned int rx_size; + unsigned int data_size; + + if (--rx_work_limit < 0) + break; + + data_size = rx_status & DSIZE; + rx_size = data_size - CRC_SIZE; + +#if IS_ENABLED(CONFIG_VLAN_8021Q) + /* ``TOOLONG'' flag means jumbo packet received. */ + if ((rx_status & TOOLONG) && data_size <= MAX_FRAME_SIZE) + rx_status &= (~ ((unsigned int)TOOLONG)); +#endif + + if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) { + /* corrupted packet received */ + if (netif_msg_rx_err(sis_priv)) + printk(KERN_DEBUG "%s: Corrupted packet " + "received, buffer status = 0x%8.8x/%d.\n", + net_dev->name, rx_status, data_size); + net_dev->stats.rx_errors++; + if (rx_status & OVERRUN) + net_dev->stats.rx_over_errors++; + if (rx_status & (TOOLONG|RUNT)) + net_dev->stats.rx_length_errors++; + if (rx_status & (RXISERR | FAERR)) + net_dev->stats.rx_frame_errors++; + if (rx_status & CRCERR) + net_dev->stats.rx_crc_errors++; + /* reset buffer descriptor state */ + sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE; + } else { + struct sk_buff * skb; + struct sk_buff * rx_skb; + + dma_unmap_single(&sis_priv->pci_dev->dev, + sis_priv->rx_ring[entry].bufptr, + RX_BUF_SIZE, DMA_FROM_DEVICE); + + /* refill the Rx buffer, what if there is not enough + * memory for new socket buffer ?? */ + if ((skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE)) == NULL) { + /* + * Not enough memory to refill the buffer + * so we need to recycle the old one so + * as to avoid creating a memory hole + * in the rx ring + */ + skb = sis_priv->rx_skbuff[entry]; + net_dev->stats.rx_dropped++; + goto refill_rx_ring; + } + + /* This situation should never happen, but due to + some unknown bugs, it is possible that + we are working on NULL sk_buff :-( */ + if (sis_priv->rx_skbuff[entry] == NULL) { + if (netif_msg_rx_err(sis_priv)) + printk(KERN_WARNING "%s: NULL pointer " + "encountered in Rx ring\n" + "cur_rx:%4.4d, dirty_rx:%4.4d\n", + net_dev->name, sis_priv->cur_rx, + sis_priv->dirty_rx); + dev_kfree_skb(skb); + break; + } + + /* give the socket buffer to upper layers */ + rx_skb = sis_priv->rx_skbuff[entry]; + skb_put(rx_skb, rx_size); + rx_skb->protocol = eth_type_trans(rx_skb, net_dev); + netif_rx(rx_skb); + + /* some network statistics */ + if ((rx_status & BCAST) == MCAST) + net_dev->stats.multicast++; + net_dev->stats.rx_bytes += rx_size; + net_dev->stats.rx_packets++; + sis_priv->dirty_rx++; +refill_rx_ring: + sis_priv->rx_skbuff[entry] = skb; + sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE; + sis_priv->rx_ring[entry].bufptr = + dma_map_single(&sis_priv->pci_dev->dev, + skb->data, RX_BUF_SIZE, + DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev, + sis_priv->rx_ring[entry].bufptr))) { + dev_kfree_skb_irq(skb); + sis_priv->rx_skbuff[entry] = NULL; + break; + } + } + sis_priv->cur_rx++; + entry = sis_priv->cur_rx % NUM_RX_DESC; + rx_status = sis_priv->rx_ring[entry].cmdsts; + } // while + + /* refill the Rx buffer, what if the rate of refilling is slower + * than consuming ?? */ + for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) { + struct sk_buff *skb; + + entry = sis_priv->dirty_rx % NUM_RX_DESC; + + if (sis_priv->rx_skbuff[entry] == NULL) { + skb = netdev_alloc_skb(net_dev, RX_BUF_SIZE); + if (skb == NULL) { + /* not enough memory for skbuff, this makes a + * "hole" on the buffer ring, it is not clear + * how the hardware will react to this kind + * of degenerated buffer */ + net_dev->stats.rx_dropped++; + break; + } + sis_priv->rx_skbuff[entry] = skb; + sis_priv->rx_ring[entry].cmdsts = RX_BUF_SIZE; + sis_priv->rx_ring[entry].bufptr = + dma_map_single(&sis_priv->pci_dev->dev, + skb->data, RX_BUF_SIZE, + DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(&sis_priv->pci_dev->dev, + sis_priv->rx_ring[entry].bufptr))) { + dev_kfree_skb_irq(skb); + sis_priv->rx_skbuff[entry] = NULL; + break; + } + } + } + /* re-enable the potentially idle receive state matchine */ + sw32(cr , RxENA | sr32(cr)); + + return 0; +} + +/** + * sis900_finish_xmit - finish up transmission of packets + * @net_dev: the net device to be transmitted on + * + * Check for error condition and free socket buffer etc + * schedule for more transmission as needed + * Note: This function is called by interrupt handler, + * don't do "too much" work here + */ + +static void sis900_finish_xmit (struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + + for (; sis_priv->dirty_tx != sis_priv->cur_tx; sis_priv->dirty_tx++) { + struct sk_buff *skb; + unsigned int entry; + u32 tx_status; + + entry = sis_priv->dirty_tx % NUM_TX_DESC; + tx_status = sis_priv->tx_ring[entry].cmdsts; + + if (tx_status & OWN) { + /* The packet is not transmitted yet (owned by hardware) ! + * Note: this is an almost impossible condition + * on TxDESC interrupt ('descriptor interrupt') */ + break; + } + + if (tx_status & (ABORT | UNDERRUN | OWCOLL)) { + /* packet unsuccessfully transmitted */ + if (netif_msg_tx_err(sis_priv)) + printk(KERN_DEBUG "%s: Transmit " + "error, Tx status %8.8x.\n", + net_dev->name, tx_status); + net_dev->stats.tx_errors++; + if (tx_status & UNDERRUN) + net_dev->stats.tx_fifo_errors++; + if (tx_status & ABORT) + net_dev->stats.tx_aborted_errors++; + if (tx_status & NOCARRIER) + net_dev->stats.tx_carrier_errors++; + if (tx_status & OWCOLL) + net_dev->stats.tx_window_errors++; + } else { + /* packet successfully transmitted */ + net_dev->stats.collisions += (tx_status & COLCNT) >> 16; + net_dev->stats.tx_bytes += tx_status & DSIZE; + net_dev->stats.tx_packets++; + } + /* Free the original skb. */ + skb = sis_priv->tx_skbuff[entry]; + dma_unmap_single(&sis_priv->pci_dev->dev, + sis_priv->tx_ring[entry].bufptr, skb->len, + DMA_TO_DEVICE); + dev_consume_skb_irq(skb); + sis_priv->tx_skbuff[entry] = NULL; + sis_priv->tx_ring[entry].bufptr = 0; + sis_priv->tx_ring[entry].cmdsts = 0; + } + + if (sis_priv->tx_full && netif_queue_stopped(net_dev) && + sis_priv->cur_tx - sis_priv->dirty_tx < NUM_TX_DESC - 4) { + /* The ring is no longer full, clear tx_full and schedule + * more transmission by netif_wake_queue(net_dev) */ + sis_priv->tx_full = 0; + netif_wake_queue (net_dev); + } +} + +/** + * sis900_close - close sis900 device + * @net_dev: the net device to be closed + * + * Disable interrupts, stop the Tx and Rx Status Machine + * free Tx and RX socket buffer + */ + +static int sis900_close(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + struct pci_dev *pdev = sis_priv->pci_dev; + void __iomem *ioaddr = sis_priv->ioaddr; + struct sk_buff *skb; + int i; + + netif_stop_queue(net_dev); + + /* Disable interrupts by clearing the interrupt mask. */ + sw32(imr, 0x0000); + sw32(ier, 0x0000); + + /* Stop the chip's Tx and Rx Status Machine */ + sw32(cr, RxDIS | TxDIS | sr32(cr)); + + del_timer(&sis_priv->timer); + + free_irq(pdev->irq, net_dev); + + /* Free Tx and RX skbuff */ + for (i = 0; i < NUM_RX_DESC; i++) { + skb = sis_priv->rx_skbuff[i]; + if (skb) { + dma_unmap_single(&pdev->dev, + sis_priv->rx_ring[i].bufptr, + RX_BUF_SIZE, DMA_FROM_DEVICE); + dev_kfree_skb(skb); + sis_priv->rx_skbuff[i] = NULL; + } + } + for (i = 0; i < NUM_TX_DESC; i++) { + skb = sis_priv->tx_skbuff[i]; + if (skb) { + dma_unmap_single(&pdev->dev, + sis_priv->tx_ring[i].bufptr, + skb->len, DMA_TO_DEVICE); + dev_kfree_skb(skb); + sis_priv->tx_skbuff[i] = NULL; + } + } + + /* Green! Put the chip in low-power mode. */ + + return 0; +} + +/** + * sis900_get_drvinfo - Return information about driver + * @net_dev: the net device to probe + * @info: container for info returned + * + * Process ethtool command such as "ehtool -i" to show information + */ + +static void sis900_get_drvinfo(struct net_device *net_dev, + struct ethtool_drvinfo *info) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + + strlcpy(info->driver, SIS900_MODULE_NAME, sizeof(info->driver)); + strlcpy(info->version, SIS900_DRV_VERSION, sizeof(info->version)); + strlcpy(info->bus_info, pci_name(sis_priv->pci_dev), + sizeof(info->bus_info)); +} + +static u32 sis900_get_msglevel(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + return sis_priv->msg_enable; +} + +static void sis900_set_msglevel(struct net_device *net_dev, u32 value) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + sis_priv->msg_enable = value; +} + +static u32 sis900_get_link(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + return mii_link_ok(&sis_priv->mii_info); +} + +static int sis900_get_link_ksettings(struct net_device *net_dev, + struct ethtool_link_ksettings *cmd) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + spin_lock_irq(&sis_priv->lock); + mii_ethtool_get_link_ksettings(&sis_priv->mii_info, cmd); + spin_unlock_irq(&sis_priv->lock); + return 0; +} + +static int sis900_set_link_ksettings(struct net_device *net_dev, + const struct ethtool_link_ksettings *cmd) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + int rt; + spin_lock_irq(&sis_priv->lock); + rt = mii_ethtool_set_link_ksettings(&sis_priv->mii_info, cmd); + spin_unlock_irq(&sis_priv->lock); + return rt; +} + +static int sis900_nway_reset(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + return mii_nway_restart(&sis_priv->mii_info); +} + +/** + * sis900_set_wol - Set up Wake on Lan registers + * @net_dev: the net device to probe + * @wol: container for info passed to the driver + * + * Process ethtool command "wol" to setup wake on lan features. + * SiS900 supports sending WoL events if a correct packet is received, + * but there is no simple way to filter them to only a subset (broadcast, + * multicast, unicast or arp). + */ + +static int sis900_set_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + u32 cfgpmcsr = 0, pmctrl_bits = 0; + + if (wol->wolopts == 0) { + pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr); + cfgpmcsr &= ~PME_EN; + pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr); + sw32(pmctrl, pmctrl_bits); + if (netif_msg_wol(sis_priv)) + printk(KERN_DEBUG "%s: Wake on LAN disabled\n", net_dev->name); + return 0; + } + + if (wol->wolopts & (WAKE_MAGICSECURE | WAKE_UCAST | WAKE_MCAST + | WAKE_BCAST | WAKE_ARP)) + return -EINVAL; + + if (wol->wolopts & WAKE_MAGIC) + pmctrl_bits |= MAGICPKT; + if (wol->wolopts & WAKE_PHY) + pmctrl_bits |= LINKON; + + sw32(pmctrl, pmctrl_bits); + + pci_read_config_dword(sis_priv->pci_dev, CFGPMCSR, &cfgpmcsr); + cfgpmcsr |= PME_EN; + pci_write_config_dword(sis_priv->pci_dev, CFGPMCSR, cfgpmcsr); + if (netif_msg_wol(sis_priv)) + printk(KERN_DEBUG "%s: Wake on LAN enabled\n", net_dev->name); + + return 0; +} + +static void sis900_get_wol(struct net_device *net_dev, struct ethtool_wolinfo *wol) +{ + struct sis900_private *sp = netdev_priv(net_dev); + void __iomem *ioaddr = sp->ioaddr; + u32 pmctrl_bits; + + pmctrl_bits = sr32(pmctrl); + if (pmctrl_bits & MAGICPKT) + wol->wolopts |= WAKE_MAGIC; + if (pmctrl_bits & LINKON) + wol->wolopts |= WAKE_PHY; + + wol->supported = (WAKE_PHY | WAKE_MAGIC); +} + +static int sis900_get_eeprom_len(struct net_device *dev) +{ + struct sis900_private *sis_priv = netdev_priv(dev); + + return sis_priv->eeprom_size; +} + +static int sis900_read_eeprom(struct net_device *net_dev, u8 *buf) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + int wait, ret = -EAGAIN; + u16 signature; + u16 *ebuf = (u16 *)buf; + int i; + + if (sis_priv->chipset_rev == SIS96x_900_REV) { + sw32(mear, EEREQ); + for (wait = 0; wait < 2000; wait++) { + if (sr32(mear) & EEGNT) { + /* read 16 bits, and index by 16 bits */ + for (i = 0; i < sis_priv->eeprom_size / 2; i++) + ebuf[i] = (u16)read_eeprom(ioaddr, i); + ret = 0; + break; + } + udelay(1); + } + sw32(mear, EEDONE); + } else { + signature = (u16)read_eeprom(ioaddr, EEPROMSignature); + if (signature != 0xffff && signature != 0x0000) { + /* read 16 bits, and index by 16 bits */ + for (i = 0; i < sis_priv->eeprom_size / 2; i++) + ebuf[i] = (u16)read_eeprom(ioaddr, i); + ret = 0; + } + } + return ret; +} + +#define SIS900_EEPROM_MAGIC 0xBABE +static int sis900_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom, u8 *data) +{ + struct sis900_private *sis_priv = netdev_priv(dev); + u8 *eebuf; + int res; + + eebuf = kmalloc(sis_priv->eeprom_size, GFP_KERNEL); + if (!eebuf) + return -ENOMEM; + + eeprom->magic = SIS900_EEPROM_MAGIC; + spin_lock_irq(&sis_priv->lock); + res = sis900_read_eeprom(dev, eebuf); + spin_unlock_irq(&sis_priv->lock); + if (!res) + memcpy(data, eebuf + eeprom->offset, eeprom->len); + kfree(eebuf); + return res; +} + +static const struct ethtool_ops sis900_ethtool_ops = { + .get_drvinfo = sis900_get_drvinfo, + .get_msglevel = sis900_get_msglevel, + .set_msglevel = sis900_set_msglevel, + .get_link = sis900_get_link, + .nway_reset = sis900_nway_reset, + .get_wol = sis900_get_wol, + .set_wol = sis900_set_wol, + .get_link_ksettings = sis900_get_link_ksettings, + .set_link_ksettings = sis900_set_link_ksettings, + .get_eeprom_len = sis900_get_eeprom_len, + .get_eeprom = sis900_get_eeprom, +}; + +/** + * mii_ioctl - process MII i/o control command + * @net_dev: the net device to command for + * @rq: parameter for command + * @cmd: the i/o command + * + * Process MII command like read/write MII register + */ + +static int mii_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + struct mii_ioctl_data *data = if_mii(rq); + + switch(cmd) { + case SIOCGMIIPHY: /* Get address of MII PHY in use. */ + data->phy_id = sis_priv->mii->phy_addr; + fallthrough; + + case SIOCGMIIREG: /* Read MII PHY register. */ + data->val_out = mdio_read(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f); + return 0; + + case SIOCSMIIREG: /* Write MII PHY register. */ + mdio_write(net_dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in); + return 0; + default: + return -EOPNOTSUPP; + } +} + +/** + * sis900_set_config - Set media type by net_device.set_config + * @dev: the net device for media type change + * @map: ifmap passed by ifconfig + * + * Set media type to 10baseT, 100baseT or 0(for auto) by ifconfig + * we support only port changes. All other runtime configuration + * changes will be ignored + */ + +static int sis900_set_config(struct net_device *dev, struct ifmap *map) +{ + struct sis900_private *sis_priv = netdev_priv(dev); + struct mii_phy *mii_phy = sis_priv->mii; + + u16 status; + + if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { + /* we switch on the ifmap->port field. I couldn't find anything + * like a definition or standard for the values of that field. + * I think the meaning of those values is device specific. But + * since I would like to change the media type via the ifconfig + * command I use the definition from linux/netdevice.h + * (which seems to be different from the ifport(pcmcia) definition) */ + switch(map->port){ + case IF_PORT_UNKNOWN: /* use auto here */ + dev->if_port = map->port; + /* we are going to change the media type, so the Link + * will be temporary down and we need to reflect that + * here. When the Link comes up again, it will be + * sensed by the sis_timer procedure, which also does + * all the rest for us */ + netif_carrier_off(dev); + + /* read current state */ + status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL); + + /* enable auto negotiation and reset the negotioation + * (I don't really know what the auto negatiotiation + * reset really means, but it sounds for me right to + * do one here) */ + mdio_write(dev, mii_phy->phy_addr, + MII_CONTROL, status | MII_CNTL_AUTO | MII_CNTL_RST_AUTO); + + break; + + case IF_PORT_10BASET: /* 10BaseT */ + dev->if_port = map->port; + + /* we are going to change the media type, so the Link + * will be temporary down and we need to reflect that + * here. When the Link comes up again, it will be + * sensed by the sis_timer procedure, which also does + * all the rest for us */ + netif_carrier_off(dev); + + /* set Speed to 10Mbps */ + /* read current state */ + status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL); + + /* disable auto negotiation and force 10MBit mode*/ + mdio_write(dev, mii_phy->phy_addr, + MII_CONTROL, status & ~(MII_CNTL_SPEED | + MII_CNTL_AUTO)); + break; + + case IF_PORT_100BASET: /* 100BaseT */ + case IF_PORT_100BASETX: /* 100BaseTx */ + dev->if_port = map->port; + + /* we are going to change the media type, so the Link + * will be temporary down and we need to reflect that + * here. When the Link comes up again, it will be + * sensed by the sis_timer procedure, which also does + * all the rest for us */ + netif_carrier_off(dev); + + /* set Speed to 100Mbps */ + /* disable auto negotiation and enable 100MBit Mode */ + status = mdio_read(dev, mii_phy->phy_addr, MII_CONTROL); + mdio_write(dev, mii_phy->phy_addr, + MII_CONTROL, (status & ~MII_CNTL_SPEED) | + MII_CNTL_SPEED); + + break; + + case IF_PORT_10BASE2: /* 10Base2 */ + case IF_PORT_AUI: /* AUI */ + case IF_PORT_100BASEFX: /* 100BaseFx */ + /* These Modes are not supported (are they?)*/ + return -EOPNOTSUPP; + + default: + return -EINVAL; + } + } + return 0; +} + +/** + * sis900_mcast_bitnr - compute hashtable index + * @addr: multicast address + * @revision: revision id of chip + * + * SiS 900 uses the most sigificant 7 bits to index a 128 bits multicast + * hash table, which makes this function a little bit different from other drivers + * SiS 900 B0 & 635 M/B uses the most significat 8 bits to index 256 bits + * multicast hash table. + */ + +static inline u16 sis900_mcast_bitnr(u8 *addr, u8 revision) +{ + + u32 crc = ether_crc(6, addr); + + /* leave 8 or 7 most siginifant bits */ + if ((revision >= SIS635A_900_REV) || (revision == SIS900B_900_REV)) + return (int)(crc >> 24); + else + return (int)(crc >> 25); +} + +/** + * set_rx_mode - Set SiS900 receive mode + * @net_dev: the net device to be set + * + * Set SiS900 receive mode for promiscuous, multicast, or broadcast mode. + * And set the appropriate multicast filter. + * Multicast hash table changes from 128 to 256 bits for 635M/B & 900B0. + */ + +static void set_rx_mode(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + u16 mc_filter[16] = {0}; /* 256/128 bits multicast hash table */ + int i, table_entries; + u32 rx_mode; + + /* 635 Hash Table entries = 256(2^16) */ + if((sis_priv->chipset_rev >= SIS635A_900_REV) || + (sis_priv->chipset_rev == SIS900B_900_REV)) + table_entries = 16; + else + table_entries = 8; + + if (net_dev->flags & IFF_PROMISC) { + /* Accept any kinds of packets */ + rx_mode = RFPromiscuous; + for (i = 0; i < table_entries; i++) + mc_filter[i] = 0xffff; + } else if ((netdev_mc_count(net_dev) > multicast_filter_limit) || + (net_dev->flags & IFF_ALLMULTI)) { + /* too many multicast addresses or accept all multicast packet */ + rx_mode = RFAAB | RFAAM; + for (i = 0; i < table_entries; i++) + mc_filter[i] = 0xffff; + } else { + /* Accept Broadcast packet, destination address matchs our + * MAC address, use Receive Filter to reject unwanted MCAST + * packets */ + struct netdev_hw_addr *ha; + rx_mode = RFAAB; + + netdev_for_each_mc_addr(ha, net_dev) { + unsigned int bit_nr; + + bit_nr = sis900_mcast_bitnr(ha->addr, + sis_priv->chipset_rev); + mc_filter[bit_nr >> 4] |= (1 << (bit_nr & 0xf)); + } + } + + /* update Multicast Hash Table in Receive Filter */ + for (i = 0; i < table_entries; i++) { + /* why plus 0x04 ??, That makes the correct value for hash table. */ + sw32(rfcr, (u32)(0x00000004 + i) << RFADDR_shift); + sw32(rfdr, mc_filter[i]); + } + + sw32(rfcr, RFEN | rx_mode); + + /* sis900 is capable of looping back packets at MAC level for + * debugging purpose */ + if (net_dev->flags & IFF_LOOPBACK) { + u32 cr_saved; + /* We must disable Tx/Rx before setting loopback mode */ + cr_saved = sr32(cr); + sw32(cr, cr_saved | TxDIS | RxDIS); + /* enable loopback */ + sw32(txcfg, sr32(txcfg) | TxMLB); + sw32(rxcfg, sr32(rxcfg) | RxATX); + /* restore cr */ + sw32(cr, cr_saved); + } +} + +/** + * sis900_reset - Reset sis900 MAC + * @net_dev: the net device to reset + * + * reset sis900 MAC and wait until finished + * reset through command register + * change backoff algorithm for 900B0 & 635 M/B + */ + +static void sis900_reset(struct net_device *net_dev) +{ + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + u32 status = TxRCMP | RxRCMP; + int i; + + sw32(ier, 0); + sw32(imr, 0); + sw32(rfcr, 0); + + sw32(cr, RxRESET | TxRESET | RESET | sr32(cr)); + + /* Check that the chip has finished the reset. */ + for (i = 0; status && (i < 1000); i++) + status ^= sr32(isr) & status; + + if (sis_priv->chipset_rev >= SIS635A_900_REV || + sis_priv->chipset_rev == SIS900B_900_REV) + sw32(cfg, PESEL | RND_CNT); + else + sw32(cfg, PESEL); +} + +/** + * sis900_remove - Remove sis900 device + * @pci_dev: the pci device to be removed + * + * remove and release SiS900 net device + */ + +static void sis900_remove(struct pci_dev *pci_dev) +{ + struct net_device *net_dev = pci_get_drvdata(pci_dev); + struct sis900_private *sis_priv = netdev_priv(net_dev); + + unregister_netdev(net_dev); + + while (sis_priv->first_mii) { + struct mii_phy *phy = sis_priv->first_mii; + + sis_priv->first_mii = phy->next; + kfree(phy); + } + + dma_free_coherent(&pci_dev->dev, RX_TOTAL_SIZE, sis_priv->rx_ring, + sis_priv->rx_ring_dma); + dma_free_coherent(&pci_dev->dev, TX_TOTAL_SIZE, sis_priv->tx_ring, + sis_priv->tx_ring_dma); + pci_iounmap(pci_dev, sis_priv->ioaddr); + free_netdev(net_dev); +} + +static int __maybe_unused sis900_suspend(struct device *dev) +{ + struct net_device *net_dev = dev_get_drvdata(dev); + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + + if(!netif_running(net_dev)) + return 0; + + netif_stop_queue(net_dev); + netif_device_detach(net_dev); + + /* Stop the chip's Tx and Rx Status Machine */ + sw32(cr, RxDIS | TxDIS | sr32(cr)); + + return 0; +} + +static int __maybe_unused sis900_resume(struct device *dev) +{ + struct net_device *net_dev = dev_get_drvdata(dev); + struct sis900_private *sis_priv = netdev_priv(net_dev); + void __iomem *ioaddr = sis_priv->ioaddr; + + if(!netif_running(net_dev)) + return 0; + + sis900_init_rxfilter(net_dev); + + sis900_init_tx_ring(net_dev); + sis900_init_rx_ring(net_dev); + + set_rx_mode(net_dev); + + netif_device_attach(net_dev); + netif_start_queue(net_dev); + + /* Workaround for EDB */ + sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED); + + /* Enable all known interrupts by setting the interrupt mask. */ + sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxDESC); + sw32(cr, RxENA | sr32(cr)); + sw32(ier, IE); + + sis900_check_mode(net_dev, sis_priv->mii); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(sis900_pm_ops, sis900_suspend, sis900_resume); + +static struct pci_driver sis900_pci_driver = { + .name = SIS900_MODULE_NAME, + .id_table = sis900_pci_tbl, + .probe = sis900_probe, + .remove = sis900_remove, + .driver.pm = &sis900_pm_ops, +}; + +static int __init sis900_init_module(void) +{ +/* when a module, this is printed whether or not devices are found in probe */ +#ifdef MODULE + printk(version); +#endif + + return pci_register_driver(&sis900_pci_driver); +} + +static void __exit sis900_cleanup_module(void) +{ + pci_unregister_driver(&sis900_pci_driver); +} + +module_init(sis900_init_module); +module_exit(sis900_cleanup_module); + diff --git a/drivers/net/ethernet/sis/sis900.h b/drivers/net/ethernet/sis/sis900.h new file mode 100644 index 000000000..66e4bf387 --- /dev/null +++ b/drivers/net/ethernet/sis/sis900.h @@ -0,0 +1,330 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* sis900.h Definitions for SiS ethernet controllers including 7014/7016 and 900 + * Copyright 1999 Silicon Integrated System Corporation + * References: + * SiS 7016 Fast Ethernet PCI Bus 10/100 Mbps LAN Controller with OnNow Support, + * preliminary Rev. 1.0 Jan. 14, 1998 + * SiS 900 Fast Ethernet PCI Bus 10/100 Mbps LAN Single Chip with OnNow Support, + * preliminary Rev. 1.0 Nov. 10, 1998 + * SiS 7014 Single Chip 100BASE-TX/10BASE-T Physical Layer Solution, + * preliminary Rev. 1.0 Jan. 18, 1998 + * http://www.sis.com.tw/support/databook.htm + */ + +/* + * SiS 7016 and SiS 900 ethernet controller registers + */ + +/* The I/O extent, SiS 900 needs 256 bytes of io address */ +#define SIS900_TOTAL_SIZE 0x100 + +/* Symbolic offsets to registers. */ +enum sis900_registers { + cr=0x0, //Command Register + cfg=0x4, //Configuration Register + mear=0x8, //EEPROM Access Register + ptscr=0xc, //PCI Test Control Register + isr=0x10, //Interrupt Status Register + imr=0x14, //Interrupt Mask Register + ier=0x18, //Interrupt Enable Register + epar=0x18, //Enhanced PHY Access Register + txdp=0x20, //Transmit Descriptor Pointer Register + txcfg=0x24, //Transmit Configuration Register + rxdp=0x30, //Receive Descriptor Pointer Register + rxcfg=0x34, //Receive Configuration Register + flctrl=0x38, //Flow Control Register + rxlen=0x3c, //Receive Packet Length Register + rfcr=0x48, //Receive Filter Control Register + rfdr=0x4C, //Receive Filter Data Register + pmctrl=0xB0, //Power Management Control Register + pmer=0xB4 //Power Management Wake-up Event Register +}; + +/* Symbolic names for bits in various registers */ +enum sis900_command_register_bits { + RELOAD = 0x00000400, ACCESSMODE = 0x00000200,/* ET */ + RESET = 0x00000100, SWI = 0x00000080, RxRESET = 0x00000020, + TxRESET = 0x00000010, RxDIS = 0x00000008, RxENA = 0x00000004, + TxDIS = 0x00000002, TxENA = 0x00000001 +}; + +enum sis900_configuration_register_bits { + DESCRFMT = 0x00000100 /* 7016 specific */, REQALG = 0x00000080, + SB = 0x00000040, POW = 0x00000020, EXD = 0x00000010, + PESEL = 0x00000008, LPM = 0x00000004, BEM = 0x00000001, + /* 635 & 900B Specific */ + RND_CNT = 0x00000400, FAIR_BACKOFF = 0x00000200, + EDB_MASTER_EN = 0x00002000 +}; + +enum sis900_eeprom_access_register_bits { + MDC = 0x00000040, MDDIR = 0x00000020, MDIO = 0x00000010, /* 7016 specific */ + EECS = 0x00000008, EECLK = 0x00000004, EEDO = 0x00000002, + EEDI = 0x00000001 +}; + +enum sis900_interrupt_register_bits { + WKEVT = 0x10000000, TxPAUSEEND = 0x08000000, TxPAUSE = 0x04000000, + TxRCMP = 0x02000000, RxRCMP = 0x01000000, DPERR = 0x00800000, + SSERR = 0x00400000, RMABT = 0x00200000, RTABT = 0x00100000, + RxSOVR = 0x00010000, HIBERR = 0x00008000, SWINT = 0x00001000, + MIBINT = 0x00000800, TxURN = 0x00000400, TxIDLE = 0x00000200, + TxERR = 0x00000100, TxDESC = 0x00000080, TxOK = 0x00000040, + RxORN = 0x00000020, RxIDLE = 0x00000010, RxEARLY = 0x00000008, + RxERR = 0x00000004, RxDESC = 0x00000002, RxOK = 0x00000001 +}; + +enum sis900_interrupt_enable_register_bits { + IE = 0x00000001 +}; + +/* maximum dma burst for transmission and receive */ +#define MAX_DMA_RANGE 7 /* actually 0 means MAXIMUM !! */ +#define TxMXDMA_shift 20 +#define RxMXDMA_shift 20 + +enum sis900_tx_rx_dma{ + DMA_BURST_512 = 0, DMA_BURST_64 = 5 +}; + +/* transmit FIFO thresholds */ +#define TX_FILL_THRESH 16 /* 1/4 FIFO size */ +#define TxFILLT_shift 8 +#define TxDRNT_shift 0 +#define TxDRNT_100 48 /* 3/4 FIFO size */ +#define TxDRNT_10 16 /* 1/2 FIFO size */ + +enum sis900_transmit_config_register_bits { + TxCSI = 0x80000000, TxHBI = 0x40000000, TxMLB = 0x20000000, + TxATP = 0x10000000, TxIFG = 0x0C000000, TxFILLT = 0x00003F00, + TxDRNT = 0x0000003F +}; + +/* recevie FIFO thresholds */ +#define RxDRNT_shift 1 +#define RxDRNT_100 16 /* 1/2 FIFO size */ +#define RxDRNT_10 24 /* 3/4 FIFO size */ + +enum sis900_reveive_config_register_bits { + RxAEP = 0x80000000, RxARP = 0x40000000, RxATX = 0x10000000, + RxAJAB = 0x08000000, RxDRNT = 0x0000007F +}; + +#define RFAA_shift 28 +#define RFADDR_shift 16 + +enum sis900_receive_filter_control_register_bits { + RFEN = 0x80000000, RFAAB = 0x40000000, RFAAM = 0x20000000, + RFAAP = 0x10000000, RFPromiscuous = (RFAAB|RFAAM|RFAAP) +}; + +enum sis900_reveive_filter_data_mask { + RFDAT = 0x0000FFFF +}; + +/* EEPROM Addresses */ +enum sis900_eeprom_address { + EEPROMSignature = 0x00, EEPROMVendorID = 0x02, EEPROMDeviceID = 0x03, + EEPROMMACAddr = 0x08, EEPROMChecksum = 0x0b +}; + +/* The EEPROM commands include the alway-set leading bit. Refer to NM93Cxx datasheet */ +enum sis900_eeprom_command { + EEread = 0x0180, EEwrite = 0x0140, EEerase = 0x01C0, + EEwriteEnable = 0x0130, EEwriteDisable = 0x0100, + EEeraseAll = 0x0120, EEwriteAll = 0x0110, + EEaddrMask = 0x013F, EEcmdShift = 16 +}; + +/* For SiS962 or SiS963, request the eeprom software access */ +enum sis96x_eeprom_command { + EEREQ = 0x00000400, EEDONE = 0x00000200, EEGNT = 0x00000100 +}; + +/* PCI Registers */ +enum sis900_pci_registers { + CFGPMC = 0x40, + CFGPMCSR = 0x44 +}; + +/* Power management capabilities bits */ +enum sis900_cfgpmc_register_bits { + PMVER = 0x00070000, + DSI = 0x00100000, + PMESP = 0xf8000000 +}; + +enum sis900_pmesp_bits { + PME_D0 = 0x1, + PME_D1 = 0x2, + PME_D2 = 0x4, + PME_D3H = 0x8, + PME_D3C = 0x10 +}; + +/* Power management control/status bits */ +enum sis900_cfgpmcsr_register_bits { + PMESTS = 0x00004000, + PME_EN = 0x00000100, // Power management enable + PWR_STA = 0x00000003 // Current power state +}; + +/* Wake-on-LAN support. */ +enum sis900_power_management_control_register_bits { + LINKLOSS = 0x00000001, + LINKON = 0x00000002, + MAGICPKT = 0x00000400, + ALGORITHM = 0x00000800, + FRM1EN = 0x00100000, + FRM2EN = 0x00200000, + FRM3EN = 0x00400000, + FRM1ACS = 0x01000000, + FRM2ACS = 0x02000000, + FRM3ACS = 0x04000000, + WAKEALL = 0x40000000, + GATECLK = 0x80000000 +}; + +/* Management Data I/O (mdio) frame */ +#define MIIread 0x6000 +#define MIIwrite 0x5002 +#define MIIpmdShift 7 +#define MIIregShift 2 +#define MIIcmdLen 16 +#define MIIcmdShift 16 + +/* Buffer Descriptor Status*/ +enum sis900_buffer_status { + OWN = 0x80000000, MORE = 0x40000000, INTR = 0x20000000, + SUPCRC = 0x10000000, INCCRC = 0x10000000, + OK = 0x08000000, DSIZE = 0x00000FFF +}; +/* Status for TX Buffers */ +enum sis900_tx_buffer_status { + ABORT = 0x04000000, UNDERRUN = 0x02000000, NOCARRIER = 0x01000000, + DEFERD = 0x00800000, EXCDEFER = 0x00400000, OWCOLL = 0x00200000, + EXCCOLL = 0x00100000, COLCNT = 0x000F0000 +}; + +enum sis900_rx_buffer_status { + OVERRUN = 0x02000000, DEST = 0x00800000, BCAST = 0x01800000, + MCAST = 0x01000000, UNIMATCH = 0x00800000, TOOLONG = 0x00400000, + RUNT = 0x00200000, RXISERR = 0x00100000, CRCERR = 0x00080000, + FAERR = 0x00040000, LOOPBK = 0x00020000, RXCOL = 0x00010000 +}; + +/* MII register offsets */ +enum mii_registers { + MII_CONTROL = 0x0000, MII_STATUS = 0x0001, MII_PHY_ID0 = 0x0002, + MII_PHY_ID1 = 0x0003, MII_ANADV = 0x0004, MII_ANLPAR = 0x0005, + MII_ANEXT = 0x0006 +}; + +/* mii registers specific to SiS 900 */ +enum sis_mii_registers { + MII_CONFIG1 = 0x0010, MII_CONFIG2 = 0x0011, MII_STSOUT = 0x0012, + MII_MASK = 0x0013, MII_RESV = 0x0014 +}; + +/* mii registers specific to ICS 1893 */ +enum ics_mii_registers { + MII_EXTCTRL = 0x0010, MII_QPDSTS = 0x0011, MII_10BTOP = 0x0012, + MII_EXTCTRL2 = 0x0013 +}; + +/* mii registers specific to AMD 79C901 */ +enum amd_mii_registers { + MII_STATUS_SUMMARY = 0x0018 +}; + +/* MII Control register bit definitions. */ +enum mii_control_register_bits { + MII_CNTL_FDX = 0x0100, MII_CNTL_RST_AUTO = 0x0200, + MII_CNTL_ISOLATE = 0x0400, MII_CNTL_PWRDWN = 0x0800, + MII_CNTL_AUTO = 0x1000, MII_CNTL_SPEED = 0x2000, + MII_CNTL_LPBK = 0x4000, MII_CNTL_RESET = 0x8000 +}; + +/* MII Status register bit */ +enum mii_status_register_bits { + MII_STAT_EXT = 0x0001, MII_STAT_JAB = 0x0002, + MII_STAT_LINK = 0x0004, MII_STAT_CAN_AUTO = 0x0008, + MII_STAT_FAULT = 0x0010, MII_STAT_AUTO_DONE = 0x0020, + MII_STAT_CAN_T = 0x0800, MII_STAT_CAN_T_FDX = 0x1000, + MII_STAT_CAN_TX = 0x2000, MII_STAT_CAN_TX_FDX = 0x4000, + MII_STAT_CAN_T4 = 0x8000 +}; + +#define MII_ID1_OUI_LO 0xFC00 /* low bits of OUI mask */ +#define MII_ID1_MODEL 0x03F0 /* model number */ +#define MII_ID1_REV 0x000F /* model number */ + +/* MII NWAY Register Bits ... + valid for the ANAR (Auto-Negotiation Advertisement) and + ANLPAR (Auto-Negotiation Link Partner) registers */ +enum mii_nway_register_bits { + MII_NWAY_NODE_SEL = 0x001f, MII_NWAY_CSMA_CD = 0x0001, + MII_NWAY_T = 0x0020, MII_NWAY_T_FDX = 0x0040, + MII_NWAY_TX = 0x0080, MII_NWAY_TX_FDX = 0x0100, + MII_NWAY_T4 = 0x0200, MII_NWAY_PAUSE = 0x0400, + MII_NWAY_RF = 0x2000, MII_NWAY_ACK = 0x4000, + MII_NWAY_NP = 0x8000 +}; + +enum mii_stsout_register_bits { + MII_STSOUT_LINK_FAIL = 0x4000, + MII_STSOUT_SPD = 0x0080, MII_STSOUT_DPLX = 0x0040 +}; + +enum mii_stsics_register_bits { + MII_STSICS_SPD = 0x8000, MII_STSICS_DPLX = 0x4000, + MII_STSICS_LINKSTS = 0x0001 +}; + +enum mii_stssum_register_bits { + MII_STSSUM_LINK = 0x0008, MII_STSSUM_DPLX = 0x0004, + MII_STSSUM_AUTO = 0x0002, MII_STSSUM_SPD = 0x0001 +}; + +enum sis900_revision_id { + SIS630A_900_REV = 0x80, SIS630E_900_REV = 0x81, + SIS630S_900_REV = 0x82, SIS630EA1_900_REV = 0x83, + SIS630ET_900_REV = 0x84, SIS635A_900_REV = 0x90, + SIS96x_900_REV = 0X91, SIS900B_900_REV = 0x03 +}; + +enum sis630_revision_id { + SIS630A0 = 0x00, SIS630A1 = 0x01, + SIS630B0 = 0x10, SIS630B1 = 0x11 +}; + +#define FDX_CAPABLE_DUPLEX_UNKNOWN 0 +#define FDX_CAPABLE_HALF_SELECTED 1 +#define FDX_CAPABLE_FULL_SELECTED 2 + +#define HW_SPEED_UNCONFIG 0 +#define HW_SPEED_HOME 1 +#define HW_SPEED_10_MBPS 10 +#define HW_SPEED_100_MBPS 100 +#define HW_SPEED_DEFAULT (HW_SPEED_100_MBPS) + +#define CRC_SIZE 4 +#define MAC_HEADER_SIZE 14 + +#if IS_ENABLED(CONFIG_VLAN_8021Q) +#define MAX_FRAME_SIZE (1518 + 4) +#else +#define MAX_FRAME_SIZE 1518 +#endif /* CONFIG_VLAN_802_1Q */ + +#define TX_BUF_SIZE (MAX_FRAME_SIZE+18) +#define RX_BUF_SIZE (MAX_FRAME_SIZE+18) + +#define NUM_TX_DESC 16 /* Number of Tx descriptor registers. */ +#define NUM_RX_DESC 16 /* Number of Rx descriptor registers. */ +#define TX_TOTAL_SIZE NUM_TX_DESC*sizeof(BufferDesc) +#define RX_TOTAL_SIZE NUM_RX_DESC*sizeof(BufferDesc) + +/* PCI stuff, should be move to pci.h */ +#define SIS630_VENDOR_ID 0x1039 +#define SIS630_DEVICE_ID 0x0630 |