diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/dsa/b53 | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/dsa/b53')
-rw-r--r-- | drivers/net/dsa/b53/Kconfig | 48 | ||||
-rw-r--r-- | drivers/net/dsa/b53/Makefile | 8 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 2846 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_mdio.c | 403 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_mmap.c | 386 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_priv.h | 403 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_regs.h | 528 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_serdes.c | 250 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_serdes.h | 124 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_spi.c | 376 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_srab.c | 698 |
11 files changed, 6070 insertions, 0 deletions
diff --git a/drivers/net/dsa/b53/Kconfig b/drivers/net/dsa/b53/Kconfig new file mode 100644 index 0000000000..ebaa4a80d5 --- /dev/null +++ b/drivers/net/dsa/b53/Kconfig @@ -0,0 +1,48 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig B53 + tristate "Broadcom BCM53xx managed switch support" + depends on NET_DSA + select NET_DSA_TAG_NONE + select NET_DSA_TAG_BRCM + select NET_DSA_TAG_BRCM_LEGACY + select NET_DSA_TAG_BRCM_PREPEND + help + This driver adds support for Broadcom managed switch chips. It supports + BCM5325E, BCM5365, BCM539x, BCM53115 and BCM53125 as well as BCM63XX + integrated switches. + +config B53_SPI_DRIVER + tristate "B53 SPI connected switch driver" + depends on B53 && SPI + help + Select to enable support for registering switches configured through SPI. + +config B53_MDIO_DRIVER + tristate "B53 MDIO connected switch driver" + depends on B53 + help + Select to enable support for registering switches configured through MDIO. + +config B53_MMAP_DRIVER + tristate "B53 MMAP connected switch driver" + depends on B53 && HAS_IOMEM + default BCM63XX || BMIPS_GENERIC + help + Select to enable support for memory-mapped switches like the BCM63XX + integrated switches. + +config B53_SRAB_DRIVER + tristate "B53 SRAB connected switch driver" + depends on B53 && HAS_IOMEM + depends on B53_SERDES || !B53_SERDES + default ARCH_BCM_IPROC + help + Select to enable support for memory-mapped Switch Register Access + Bridge Registers (SRAB) like it is found on the BCM53010 + +config B53_SERDES + tristate "B53 SerDes support" + depends on B53 + default ARCH_BCM_NSP + help + Select to enable support for SerDes on e.g: Northstar Plus SoCs. diff --git a/drivers/net/dsa/b53/Makefile b/drivers/net/dsa/b53/Makefile new file mode 100644 index 0000000000..b1be13023a --- /dev/null +++ b/drivers/net/dsa/b53/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_B53) += b53_common.o + +obj-$(CONFIG_B53_SPI_DRIVER) += b53_spi.o +obj-$(CONFIG_B53_MDIO_DRIVER) += b53_mdio.o +obj-$(CONFIG_B53_MMAP_DRIVER) += b53_mmap.o +obj-$(CONFIG_B53_SRAB_DRIVER) += b53_srab.o +obj-$(CONFIG_B53_SERDES) += b53_serdes.o diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c new file mode 100644 index 0000000000..4e27dc913c --- /dev/null +++ b/drivers/net/dsa/b53/b53_common.c @@ -0,0 +1,2846 @@ +/* + * B53 switch driver main logic + * + * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org> + * Copyright (C) 2016 Florian Fainelli <f.fainelli@gmail.com> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/delay.h> +#include <linux/export.h> +#include <linux/gpio.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_data/b53.h> +#include <linux/phy.h> +#include <linux/phylink.h> +#include <linux/etherdevice.h> +#include <linux/if_bridge.h> +#include <net/dsa.h> + +#include "b53_regs.h" +#include "b53_priv.h" + +struct b53_mib_desc { + u8 size; + u8 offset; + const char *name; +}; + +/* BCM5365 MIB counters */ +static const struct b53_mib_desc b53_mibs_65[] = { + { 8, 0x00, "TxOctets" }, + { 4, 0x08, "TxDropPkts" }, + { 4, 0x10, "TxBroadcastPkts" }, + { 4, 0x14, "TxMulticastPkts" }, + { 4, 0x18, "TxUnicastPkts" }, + { 4, 0x1c, "TxCollisions" }, + { 4, 0x20, "TxSingleCollision" }, + { 4, 0x24, "TxMultipleCollision" }, + { 4, 0x28, "TxDeferredTransmit" }, + { 4, 0x2c, "TxLateCollision" }, + { 4, 0x30, "TxExcessiveCollision" }, + { 4, 0x38, "TxPausePkts" }, + { 8, 0x44, "RxOctets" }, + { 4, 0x4c, "RxUndersizePkts" }, + { 4, 0x50, "RxPausePkts" }, + { 4, 0x54, "Pkts64Octets" }, + { 4, 0x58, "Pkts65to127Octets" }, + { 4, 0x5c, "Pkts128to255Octets" }, + { 4, 0x60, "Pkts256to511Octets" }, + { 4, 0x64, "Pkts512to1023Octets" }, + { 4, 0x68, "Pkts1024to1522Octets" }, + { 4, 0x6c, "RxOversizePkts" }, + { 4, 0x70, "RxJabbers" }, + { 4, 0x74, "RxAlignmentErrors" }, + { 4, 0x78, "RxFCSErrors" }, + { 8, 0x7c, "RxGoodOctets" }, + { 4, 0x84, "RxDropPkts" }, + { 4, 0x88, "RxUnicastPkts" }, + { 4, 0x8c, "RxMulticastPkts" }, + { 4, 0x90, "RxBroadcastPkts" }, + { 4, 0x94, "RxSAChanges" }, + { 4, 0x98, "RxFragments" }, +}; + +#define B53_MIBS_65_SIZE ARRAY_SIZE(b53_mibs_65) + +/* BCM63xx MIB counters */ +static const struct b53_mib_desc b53_mibs_63xx[] = { + { 8, 0x00, "TxOctets" }, + { 4, 0x08, "TxDropPkts" }, + { 4, 0x0c, "TxQoSPkts" }, + { 4, 0x10, "TxBroadcastPkts" }, + { 4, 0x14, "TxMulticastPkts" }, + { 4, 0x18, "TxUnicastPkts" }, + { 4, 0x1c, "TxCollisions" }, + { 4, 0x20, "TxSingleCollision" }, + { 4, 0x24, "TxMultipleCollision" }, + { 4, 0x28, "TxDeferredTransmit" }, + { 4, 0x2c, "TxLateCollision" }, + { 4, 0x30, "TxExcessiveCollision" }, + { 4, 0x38, "TxPausePkts" }, + { 8, 0x3c, "TxQoSOctets" }, + { 8, 0x44, "RxOctets" }, + { 4, 0x4c, "RxUndersizePkts" }, + { 4, 0x50, "RxPausePkts" }, + { 4, 0x54, "Pkts64Octets" }, + { 4, 0x58, "Pkts65to127Octets" }, + { 4, 0x5c, "Pkts128to255Octets" }, + { 4, 0x60, "Pkts256to511Octets" }, + { 4, 0x64, "Pkts512to1023Octets" }, + { 4, 0x68, "Pkts1024to1522Octets" }, + { 4, 0x6c, "RxOversizePkts" }, + { 4, 0x70, "RxJabbers" }, + { 4, 0x74, "RxAlignmentErrors" }, + { 4, 0x78, "RxFCSErrors" }, + { 8, 0x7c, "RxGoodOctets" }, + { 4, 0x84, "RxDropPkts" }, + { 4, 0x88, "RxUnicastPkts" }, + { 4, 0x8c, "RxMulticastPkts" }, + { 4, 0x90, "RxBroadcastPkts" }, + { 4, 0x94, "RxSAChanges" }, + { 4, 0x98, "RxFragments" }, + { 4, 0xa0, "RxSymbolErrors" }, + { 4, 0xa4, "RxQoSPkts" }, + { 8, 0xa8, "RxQoSOctets" }, + { 4, 0xb0, "Pkts1523to2047Octets" }, + { 4, 0xb4, "Pkts2048to4095Octets" }, + { 4, 0xb8, "Pkts4096to8191Octets" }, + { 4, 0xbc, "Pkts8192to9728Octets" }, + { 4, 0xc0, "RxDiscarded" }, +}; + +#define B53_MIBS_63XX_SIZE ARRAY_SIZE(b53_mibs_63xx) + +/* MIB counters */ +static const struct b53_mib_desc b53_mibs[] = { + { 8, 0x00, "TxOctets" }, + { 4, 0x08, "TxDropPkts" }, + { 4, 0x10, "TxBroadcastPkts" }, + { 4, 0x14, "TxMulticastPkts" }, + { 4, 0x18, "TxUnicastPkts" }, + { 4, 0x1c, "TxCollisions" }, + { 4, 0x20, "TxSingleCollision" }, + { 4, 0x24, "TxMultipleCollision" }, + { 4, 0x28, "TxDeferredTransmit" }, + { 4, 0x2c, "TxLateCollision" }, + { 4, 0x30, "TxExcessiveCollision" }, + { 4, 0x38, "TxPausePkts" }, + { 8, 0x50, "RxOctets" }, + { 4, 0x58, "RxUndersizePkts" }, + { 4, 0x5c, "RxPausePkts" }, + { 4, 0x60, "Pkts64Octets" }, + { 4, 0x64, "Pkts65to127Octets" }, + { 4, 0x68, "Pkts128to255Octets" }, + { 4, 0x6c, "Pkts256to511Octets" }, + { 4, 0x70, "Pkts512to1023Octets" }, + { 4, 0x74, "Pkts1024to1522Octets" }, + { 4, 0x78, "RxOversizePkts" }, + { 4, 0x7c, "RxJabbers" }, + { 4, 0x80, "RxAlignmentErrors" }, + { 4, 0x84, "RxFCSErrors" }, + { 8, 0x88, "RxGoodOctets" }, + { 4, 0x90, "RxDropPkts" }, + { 4, 0x94, "RxUnicastPkts" }, + { 4, 0x98, "RxMulticastPkts" }, + { 4, 0x9c, "RxBroadcastPkts" }, + { 4, 0xa0, "RxSAChanges" }, + { 4, 0xa4, "RxFragments" }, + { 4, 0xa8, "RxJumboPkts" }, + { 4, 0xac, "RxSymbolErrors" }, + { 4, 0xc0, "RxDiscarded" }, +}; + +#define B53_MIBS_SIZE ARRAY_SIZE(b53_mibs) + +static const struct b53_mib_desc b53_mibs_58xx[] = { + { 8, 0x00, "TxOctets" }, + { 4, 0x08, "TxDropPkts" }, + { 4, 0x0c, "TxQPKTQ0" }, + { 4, 0x10, "TxBroadcastPkts" }, + { 4, 0x14, "TxMulticastPkts" }, + { 4, 0x18, "TxUnicastPKts" }, + { 4, 0x1c, "TxCollisions" }, + { 4, 0x20, "TxSingleCollision" }, + { 4, 0x24, "TxMultipleCollision" }, + { 4, 0x28, "TxDeferredCollision" }, + { 4, 0x2c, "TxLateCollision" }, + { 4, 0x30, "TxExcessiveCollision" }, + { 4, 0x34, "TxFrameInDisc" }, + { 4, 0x38, "TxPausePkts" }, + { 4, 0x3c, "TxQPKTQ1" }, + { 4, 0x40, "TxQPKTQ2" }, + { 4, 0x44, "TxQPKTQ3" }, + { 4, 0x48, "TxQPKTQ4" }, + { 4, 0x4c, "TxQPKTQ5" }, + { 8, 0x50, "RxOctets" }, + { 4, 0x58, "RxUndersizePkts" }, + { 4, 0x5c, "RxPausePkts" }, + { 4, 0x60, "RxPkts64Octets" }, + { 4, 0x64, "RxPkts65to127Octets" }, + { 4, 0x68, "RxPkts128to255Octets" }, + { 4, 0x6c, "RxPkts256to511Octets" }, + { 4, 0x70, "RxPkts512to1023Octets" }, + { 4, 0x74, "RxPkts1024toMaxPktsOctets" }, + { 4, 0x78, "RxOversizePkts" }, + { 4, 0x7c, "RxJabbers" }, + { 4, 0x80, "RxAlignmentErrors" }, + { 4, 0x84, "RxFCSErrors" }, + { 8, 0x88, "RxGoodOctets" }, + { 4, 0x90, "RxDropPkts" }, + { 4, 0x94, "RxUnicastPkts" }, + { 4, 0x98, "RxMulticastPkts" }, + { 4, 0x9c, "RxBroadcastPkts" }, + { 4, 0xa0, "RxSAChanges" }, + { 4, 0xa4, "RxFragments" }, + { 4, 0xa8, "RxJumboPkt" }, + { 4, 0xac, "RxSymblErr" }, + { 4, 0xb0, "InRangeErrCount" }, + { 4, 0xb4, "OutRangeErrCount" }, + { 4, 0xb8, "EEELpiEvent" }, + { 4, 0xbc, "EEELpiDuration" }, + { 4, 0xc0, "RxDiscard" }, + { 4, 0xc8, "TxQPKTQ6" }, + { 4, 0xcc, "TxQPKTQ7" }, + { 4, 0xd0, "TxPkts64Octets" }, + { 4, 0xd4, "TxPkts65to127Octets" }, + { 4, 0xd8, "TxPkts128to255Octets" }, + { 4, 0xdc, "TxPkts256to511Ocets" }, + { 4, 0xe0, "TxPkts512to1023Ocets" }, + { 4, 0xe4, "TxPkts1024toMaxPktOcets" }, +}; + +#define B53_MIBS_58XX_SIZE ARRAY_SIZE(b53_mibs_58xx) + +static int b53_do_vlan_op(struct b53_device *dev, u8 op) +{ + unsigned int i; + + b53_write8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], VTA_START_CMD | op); + + for (i = 0; i < 10; i++) { + u8 vta; + + b53_read8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], &vta); + if (!(vta & VTA_START_CMD)) + return 0; + + usleep_range(100, 200); + } + + return -EIO; +} + +static void b53_set_vlan_entry(struct b53_device *dev, u16 vid, + struct b53_vlan *vlan) +{ + if (is5325(dev)) { + u32 entry = 0; + + if (vlan->members) { + entry = ((vlan->untag & VA_UNTAG_MASK_25) << + VA_UNTAG_S_25) | vlan->members; + if (dev->core_rev >= 3) + entry |= VA_VALID_25_R4 | vid << VA_VID_HIGH_S; + else + entry |= VA_VALID_25; + } + + b53_write32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, entry); + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid | + VTA_RW_STATE_WR | VTA_RW_OP_EN); + } else if (is5365(dev)) { + u16 entry = 0; + + if (vlan->members) + entry = ((vlan->untag & VA_UNTAG_MASK_65) << + VA_UNTAG_S_65) | vlan->members | VA_VALID_65; + + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, entry); + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid | + VTA_RW_STATE_WR | VTA_RW_OP_EN); + } else { + b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid); + b53_write32(dev, B53_ARLIO_PAGE, dev->vta_regs[2], + (vlan->untag << VTE_UNTAG_S) | vlan->members); + + b53_do_vlan_op(dev, VTA_CMD_WRITE); + } + + dev_dbg(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n", + vid, vlan->members, vlan->untag); +} + +static void b53_get_vlan_entry(struct b53_device *dev, u16 vid, + struct b53_vlan *vlan) +{ + if (is5325(dev)) { + u32 entry = 0; + + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid | + VTA_RW_STATE_RD | VTA_RW_OP_EN); + b53_read32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, &entry); + + if (dev->core_rev >= 3) + vlan->valid = !!(entry & VA_VALID_25_R4); + else + vlan->valid = !!(entry & VA_VALID_25); + vlan->members = entry & VA_MEMBER_MASK; + vlan->untag = (entry >> VA_UNTAG_S_25) & VA_UNTAG_MASK_25; + + } else if (is5365(dev)) { + u16 entry = 0; + + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid | + VTA_RW_STATE_WR | VTA_RW_OP_EN); + b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, &entry); + + vlan->valid = !!(entry & VA_VALID_65); + vlan->members = entry & VA_MEMBER_MASK; + vlan->untag = (entry >> VA_UNTAG_S_65) & VA_UNTAG_MASK_65; + } else { + u32 entry = 0; + + b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid); + b53_do_vlan_op(dev, VTA_CMD_READ); + b53_read32(dev, B53_ARLIO_PAGE, dev->vta_regs[2], &entry); + vlan->members = entry & VTE_MEMBERS; + vlan->untag = (entry >> VTE_UNTAG_S) & VTE_MEMBERS; + vlan->valid = true; + } +} + +static void b53_set_forwarding(struct b53_device *dev, int enable) +{ + u8 mgmt; + + b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt); + + if (enable) + mgmt |= SM_SW_FWD_EN; + else + mgmt &= ~SM_SW_FWD_EN; + + b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt); + + /* Include IMP port in dumb forwarding mode + */ + b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt); + mgmt |= B53_MII_DUMB_FWDG_EN; + b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt); + + /* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether + * frames should be flooded or not. + */ + b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt); + mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN | B53_IPMC_FWD_EN; + b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt); +} + +static void b53_enable_vlan(struct b53_device *dev, int port, bool enable, + bool enable_filtering) +{ + u8 mgmt, vc0, vc1, vc4 = 0, vc5; + + b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt); + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, &vc0); + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, &vc1); + + if (is5325(dev) || is5365(dev)) { + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4); + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, &vc5); + } else if (is63xx(dev)) { + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, &vc4); + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, &vc5); + } else { + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, &vc4); + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5); + } + + if (enable) { + vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID; + vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN; + vc4 &= ~VC4_ING_VID_CHECK_MASK; + if (enable_filtering) { + vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S; + vc5 |= VC5_DROP_VTABLE_MISS; + } else { + vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S; + vc5 &= ~VC5_DROP_VTABLE_MISS; + } + + if (is5325(dev)) + vc0 &= ~VC0_RESERVED_1; + + if (is5325(dev) || is5365(dev)) + vc1 |= VC1_RX_MCST_TAG_EN; + + } else { + vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID); + vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN); + vc4 &= ~VC4_ING_VID_CHECK_MASK; + vc5 &= ~VC5_DROP_VTABLE_MISS; + + if (is5325(dev) || is5365(dev)) + vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S; + else + vc4 |= VC4_ING_VID_VIO_TO_IMP << VC4_ING_VID_CHECK_S; + + if (is5325(dev) || is5365(dev)) + vc1 &= ~VC1_RX_MCST_TAG_EN; + } + + if (!is5325(dev) && !is5365(dev)) + vc5 &= ~VC5_VID_FFF_EN; + + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, vc0); + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, vc1); + + if (is5325(dev) || is5365(dev)) { + /* enable the high 8 bit vid check on 5325 */ + if (is5325(dev) && enable) + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, + VC3_HIGH_8BIT_EN); + else + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0); + + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, vc4); + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, vc5); + } else if (is63xx(dev)) { + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3_63XX, 0); + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, vc4); + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, vc5); + } else { + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0); + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, vc4); + b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, vc5); + } + + b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt); + + dev->vlan_enabled = enable; + + dev_dbg(dev->dev, "Port %d VLAN enabled: %d, filtering: %d\n", + port, enable, enable_filtering); +} + +static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100) +{ + u32 port_mask = 0; + u16 max_size = JMS_MIN_SIZE; + + if (is5325(dev) || is5365(dev)) + return -EINVAL; + + if (enable) { + port_mask = dev->enabled_ports; + max_size = JMS_MAX_SIZE; + if (allow_10_100) + port_mask |= JPM_10_100_JUMBO_EN; + } + + b53_write32(dev, B53_JUMBO_PAGE, dev->jumbo_pm_reg, port_mask); + return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size); +} + +static int b53_flush_arl(struct b53_device *dev, u8 mask) +{ + unsigned int i; + + b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, + FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask); + + for (i = 0; i < 10; i++) { + u8 fast_age_ctrl; + + b53_read8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, + &fast_age_ctrl); + + if (!(fast_age_ctrl & FAST_AGE_DONE)) + goto out; + + msleep(1); + } + + return -ETIMEDOUT; +out: + /* Only age dynamic entries (default behavior) */ + b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, FAST_AGE_DYNAMIC); + return 0; +} + +static int b53_fast_age_port(struct b53_device *dev, int port) +{ + b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port); + + return b53_flush_arl(dev, FAST_AGE_PORT); +} + +static int b53_fast_age_vlan(struct b53_device *dev, u16 vid) +{ + b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid); + + return b53_flush_arl(dev, FAST_AGE_VLAN); +} + +void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port) +{ + struct b53_device *dev = ds->priv; + unsigned int i; + u16 pvlan; + + /* Enable the IMP port to be in the same VLAN as the other ports + * on a per-port basis such that we only have Port i and IMP in + * the same VLAN. + */ + b53_for_each_port(dev, i) { + b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &pvlan); + pvlan |= BIT(cpu_port); + b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), pvlan); + } +} +EXPORT_SYMBOL(b53_imp_vlan_setup); + +static void b53_port_set_ucast_flood(struct b53_device *dev, int port, + bool unicast) +{ + u16 uc; + + b53_read16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, &uc); + if (unicast) + uc |= BIT(port); + else + uc &= ~BIT(port); + b53_write16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, uc); +} + +static void b53_port_set_mcast_flood(struct b53_device *dev, int port, + bool multicast) +{ + u16 mc; + + b53_read16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, &mc); + if (multicast) + mc |= BIT(port); + else + mc &= ~BIT(port); + b53_write16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, mc); + + b53_read16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, &mc); + if (multicast) + mc |= BIT(port); + else + mc &= ~BIT(port); + b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, mc); +} + +static void b53_port_set_learning(struct b53_device *dev, int port, + bool learning) +{ + u16 reg; + + b53_read16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, ®); + if (learning) + reg &= ~BIT(port); + else + reg |= BIT(port); + b53_write16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, reg); +} + +int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy) +{ + struct b53_device *dev = ds->priv; + unsigned int cpu_port; + int ret = 0; + u16 pvlan; + + if (!dsa_is_user_port(ds, port)) + return 0; + + cpu_port = dsa_to_port(ds, port)->cpu_dp->index; + + b53_port_set_ucast_flood(dev, port, true); + b53_port_set_mcast_flood(dev, port, true); + b53_port_set_learning(dev, port, false); + + if (dev->ops->irq_enable) + ret = dev->ops->irq_enable(dev, port); + if (ret) + return ret; + + /* Clear the Rx and Tx disable bits and set to no spanning tree */ + b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0); + + /* Set this port, and only this one to be in the default VLAN, + * if member of a bridge, restore its membership prior to + * bringing down this port. + */ + b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan); + pvlan &= ~0x1ff; + pvlan |= BIT(port); + pvlan |= dev->ports[port].vlan_ctl_mask; + b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan); + + b53_imp_vlan_setup(ds, cpu_port); + + /* If EEE was enabled, restore it */ + if (dev->ports[port].eee.eee_enabled) + b53_eee_enable_set(ds, port, true); + + return 0; +} +EXPORT_SYMBOL(b53_enable_port); + +void b53_disable_port(struct dsa_switch *ds, int port) +{ + struct b53_device *dev = ds->priv; + u8 reg; + + /* Disable Tx/Rx for the port */ + b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), ®); + reg |= PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE; + b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg); + + if (dev->ops->irq_disable) + dev->ops->irq_disable(dev, port); +} +EXPORT_SYMBOL(b53_disable_port); + +void b53_brcm_hdr_setup(struct dsa_switch *ds, int port) +{ + struct b53_device *dev = ds->priv; + bool tag_en = !(dev->tag_protocol == DSA_TAG_PROTO_NONE); + u8 hdr_ctl, val; + u16 reg; + + /* Resolve which bit controls the Broadcom tag */ + switch (port) { + case 8: + val = BRCM_HDR_P8_EN; + break; + case 7: + val = BRCM_HDR_P7_EN; + break; + case 5: + val = BRCM_HDR_P5_EN; + break; + default: + val = 0; + break; + } + + /* Enable management mode if tagging is requested */ + b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &hdr_ctl); + if (tag_en) + hdr_ctl |= SM_SW_FWD_MODE; + else + hdr_ctl &= ~SM_SW_FWD_MODE; + b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, hdr_ctl); + + /* Configure the appropriate IMP port */ + b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &hdr_ctl); + if (port == 8) + hdr_ctl |= GC_FRM_MGMT_PORT_MII; + else if (port == 5) + hdr_ctl |= GC_FRM_MGMT_PORT_M; + b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, hdr_ctl); + + /* Enable Broadcom tags for IMP port */ + b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl); + if (tag_en) + hdr_ctl |= val; + else + hdr_ctl &= ~val; + b53_write8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, hdr_ctl); + + /* Registers below are only accessible on newer devices */ + if (!is58xx(dev)) + return; + + /* Enable reception Broadcom tag for CPU TX (switch RX) to + * allow us to tag outgoing frames + */ + b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, ®); + if (tag_en) + reg &= ~BIT(port); + else + reg |= BIT(port); + b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, reg); + + /* Enable transmission of Broadcom tags from the switch (CPU RX) to + * allow delivering frames to the per-port net_devices + */ + b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, ®); + if (tag_en) + reg &= ~BIT(port); + else + reg |= BIT(port); + b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, reg); +} +EXPORT_SYMBOL(b53_brcm_hdr_setup); + +static void b53_enable_cpu_port(struct b53_device *dev, int port) +{ + u8 port_ctrl; + + /* BCM5325 CPU port is at 8 */ + if ((is5325(dev) || is5365(dev)) && port == B53_CPU_PORT_25) + port = B53_CPU_PORT; + + port_ctrl = PORT_CTRL_RX_BCST_EN | + PORT_CTRL_RX_MCST_EN | + PORT_CTRL_RX_UCST_EN; + b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), port_ctrl); + + b53_brcm_hdr_setup(dev->ds, port); + + b53_port_set_ucast_flood(dev, port, true); + b53_port_set_mcast_flood(dev, port, true); + b53_port_set_learning(dev, port, false); +} + +static void b53_enable_mib(struct b53_device *dev) +{ + u8 gc; + + b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc); + gc &= ~(GC_RESET_MIB | GC_MIB_AC_EN); + b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc); +} + +static u16 b53_default_pvid(struct b53_device *dev) +{ + if (is5325(dev) || is5365(dev)) + return 1; + else + return 0; +} + +static bool b53_vlan_port_needs_forced_tagged(struct dsa_switch *ds, int port) +{ + struct b53_device *dev = ds->priv; + + return dev->tag_protocol == DSA_TAG_PROTO_NONE && dsa_is_cpu_port(ds, port); +} + +int b53_configure_vlan(struct dsa_switch *ds) +{ + struct b53_device *dev = ds->priv; + struct b53_vlan vl = { 0 }; + struct b53_vlan *v; + int i, def_vid; + u16 vid; + + def_vid = b53_default_pvid(dev); + + /* clear all vlan entries */ + if (is5325(dev) || is5365(dev)) { + for (i = def_vid; i < dev->num_vlans; i++) + b53_set_vlan_entry(dev, i, &vl); + } else { + b53_do_vlan_op(dev, VTA_CMD_CLEAR); + } + + b53_enable_vlan(dev, -1, dev->vlan_enabled, ds->vlan_filtering); + + /* Create an untagged VLAN entry for the default PVID in case + * CONFIG_VLAN_8021Q is disabled and there are no calls to + * dsa_slave_vlan_rx_add_vid() to create the default VLAN + * entry. Do this only when the tagging protocol is not + * DSA_TAG_PROTO_NONE + */ + b53_for_each_port(dev, i) { + v = &dev->vlans[def_vid]; + v->members |= BIT(i); + if (!b53_vlan_port_needs_forced_tagged(ds, i)) + v->untag = v->members; + b53_write16(dev, B53_VLAN_PAGE, + B53_VLAN_PORT_DEF_TAG(i), def_vid); + } + + /* Upon initial call we have not set-up any VLANs, but upon + * system resume, we need to restore all VLAN entries. + */ + for (vid = def_vid; vid < dev->num_vlans; vid++) { + v = &dev->vlans[vid]; + + if (!v->members) + continue; + + b53_set_vlan_entry(dev, vid, v); + b53_fast_age_vlan(dev, vid); + } + + return 0; +} +EXPORT_SYMBOL(b53_configure_vlan); + +static void b53_switch_reset_gpio(struct b53_device *dev) +{ + int gpio = dev->reset_gpio; + + if (gpio < 0) + return; + + /* Reset sequence: RESET low(50ms)->high(20ms) + */ + gpio_set_value(gpio, 0); + mdelay(50); + + gpio_set_value(gpio, 1); + mdelay(20); + + dev->current_page = 0xff; +} + +static int b53_switch_reset(struct b53_device *dev) +{ + unsigned int timeout = 1000; + u8 mgmt, reg; + + b53_switch_reset_gpio(dev); + + if (is539x(dev)) { + b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x83); + b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00); + } + + /* This is specific to 58xx devices here, do not use is58xx() which + * covers the larger Starfigther 2 family, including 7445/7278 which + * still use this driver as a library and need to perform the reset + * earlier. + */ + if (dev->chip_id == BCM58XX_DEVICE_ID || + dev->chip_id == BCM583XX_DEVICE_ID) { + b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, ®); + reg |= SW_RST | EN_SW_RST | EN_CH_RST; + b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, reg); + + do { + b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, ®); + if (!(reg & SW_RST)) + break; + + usleep_range(1000, 2000); + } while (timeout-- > 0); + + if (timeout == 0) { + dev_err(dev->dev, + "Timeout waiting for SW_RST to clear!\n"); + return -ETIMEDOUT; + } + } + + b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt); + + if (!(mgmt & SM_SW_FWD_EN)) { + mgmt &= ~SM_SW_FWD_MODE; + mgmt |= SM_SW_FWD_EN; + + b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt); + b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt); + + if (!(mgmt & SM_SW_FWD_EN)) { + dev_err(dev->dev, "Failed to enable switch!\n"); + return -EINVAL; + } + } + + b53_enable_mib(dev); + + return b53_flush_arl(dev, FAST_AGE_STATIC); +} + +static int b53_phy_read16(struct dsa_switch *ds, int addr, int reg) +{ + struct b53_device *priv = ds->priv; + u16 value = 0; + int ret; + + if (priv->ops->phy_read16) + ret = priv->ops->phy_read16(priv, addr, reg, &value); + else + ret = b53_read16(priv, B53_PORT_MII_PAGE(addr), + reg * 2, &value); + + return ret ? ret : value; +} + +static int b53_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val) +{ + struct b53_device *priv = ds->priv; + + if (priv->ops->phy_write16) + return priv->ops->phy_write16(priv, addr, reg, val); + + return b53_write16(priv, B53_PORT_MII_PAGE(addr), reg * 2, val); +} + +static int b53_reset_switch(struct b53_device *priv) +{ + /* reset vlans */ + memset(priv->vlans, 0, sizeof(*priv->vlans) * priv->num_vlans); + memset(priv->ports, 0, sizeof(*priv->ports) * priv->num_ports); + + priv->serdes_lane = B53_INVALID_LANE; + + return b53_switch_reset(priv); +} + +static int b53_apply_config(struct b53_device *priv) +{ + /* disable switching */ + b53_set_forwarding(priv, 0); + + b53_configure_vlan(priv->ds); + + /* enable switching */ + b53_set_forwarding(priv, 1); + + return 0; +} + +static void b53_reset_mib(struct b53_device *priv) +{ + u8 gc; + + b53_read8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc); + + b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc | GC_RESET_MIB); + msleep(1); + b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc & ~GC_RESET_MIB); + msleep(1); +} + +static const struct b53_mib_desc *b53_get_mib(struct b53_device *dev) +{ + if (is5365(dev)) + return b53_mibs_65; + else if (is63xx(dev)) + return b53_mibs_63xx; + else if (is58xx(dev)) + return b53_mibs_58xx; + else + return b53_mibs; +} + +static unsigned int b53_get_mib_size(struct b53_device *dev) +{ + if (is5365(dev)) + return B53_MIBS_65_SIZE; + else if (is63xx(dev)) + return B53_MIBS_63XX_SIZE; + else if (is58xx(dev)) + return B53_MIBS_58XX_SIZE; + else + return B53_MIBS_SIZE; +} + +static struct phy_device *b53_get_phy_device(struct dsa_switch *ds, int port) +{ + /* These ports typically do not have built-in PHYs */ + switch (port) { + case B53_CPU_PORT_25: + case 7: + case B53_CPU_PORT: + return NULL; + } + + return mdiobus_get_phy(ds->slave_mii_bus, port); +} + +void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset, + uint8_t *data) +{ + struct b53_device *dev = ds->priv; + const struct b53_mib_desc *mibs = b53_get_mib(dev); + unsigned int mib_size = b53_get_mib_size(dev); + struct phy_device *phydev; + unsigned int i; + + if (stringset == ETH_SS_STATS) { + for (i = 0; i < mib_size; i++) + strscpy(data + i * ETH_GSTRING_LEN, + mibs[i].name, ETH_GSTRING_LEN); + } else if (stringset == ETH_SS_PHY_STATS) { + phydev = b53_get_phy_device(ds, port); + if (!phydev) + return; + + phy_ethtool_get_strings(phydev, data); + } +} +EXPORT_SYMBOL(b53_get_strings); + +void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data) +{ + struct b53_device *dev = ds->priv; + const struct b53_mib_desc *mibs = b53_get_mib(dev); + unsigned int mib_size = b53_get_mib_size(dev); + const struct b53_mib_desc *s; + unsigned int i; + u64 val = 0; + + if (is5365(dev) && port == 5) + port = 8; + + mutex_lock(&dev->stats_mutex); + + for (i = 0; i < mib_size; i++) { + s = &mibs[i]; + + if (s->size == 8) { + b53_read64(dev, B53_MIB_PAGE(port), s->offset, &val); + } else { + u32 val32; + + b53_read32(dev, B53_MIB_PAGE(port), s->offset, + &val32); + val = val32; + } + data[i] = (u64)val; + } + + mutex_unlock(&dev->stats_mutex); +} +EXPORT_SYMBOL(b53_get_ethtool_stats); + +void b53_get_ethtool_phy_stats(struct dsa_switch *ds, int port, uint64_t *data) +{ + struct phy_device *phydev; + + phydev = b53_get_phy_device(ds, port); + if (!phydev) + return; + + phy_ethtool_get_stats(phydev, NULL, data); +} +EXPORT_SYMBOL(b53_get_ethtool_phy_stats); + +int b53_get_sset_count(struct dsa_switch *ds, int port, int sset) +{ + struct b53_device *dev = ds->priv; + struct phy_device *phydev; + + if (sset == ETH_SS_STATS) { + return b53_get_mib_size(dev); + } else if (sset == ETH_SS_PHY_STATS) { + phydev = b53_get_phy_device(ds, port); + if (!phydev) + return 0; + + return phy_ethtool_get_sset_count(phydev); + } + + return 0; +} +EXPORT_SYMBOL(b53_get_sset_count); + +enum b53_devlink_resource_id { + B53_DEVLINK_PARAM_ID_VLAN_TABLE, +}; + +static u64 b53_devlink_vlan_table_get(void *priv) +{ + struct b53_device *dev = priv; + struct b53_vlan *vl; + unsigned int i; + u64 count = 0; + + for (i = 0; i < dev->num_vlans; i++) { + vl = &dev->vlans[i]; + if (vl->members) + count++; + } + + return count; +} + +int b53_setup_devlink_resources(struct dsa_switch *ds) +{ + struct devlink_resource_size_params size_params; + struct b53_device *dev = ds->priv; + int err; + + devlink_resource_size_params_init(&size_params, dev->num_vlans, + dev->num_vlans, + 1, DEVLINK_RESOURCE_UNIT_ENTRY); + + err = dsa_devlink_resource_register(ds, "VLAN", dev->num_vlans, + B53_DEVLINK_PARAM_ID_VLAN_TABLE, + DEVLINK_RESOURCE_ID_PARENT_TOP, + &size_params); + if (err) + goto out; + + dsa_devlink_resource_occ_get_register(ds, + B53_DEVLINK_PARAM_ID_VLAN_TABLE, + b53_devlink_vlan_table_get, dev); + + return 0; +out: + dsa_devlink_resources_unregister(ds); + return err; +} +EXPORT_SYMBOL(b53_setup_devlink_resources); + +static int b53_setup(struct dsa_switch *ds) +{ + struct b53_device *dev = ds->priv; + unsigned int port; + int ret; + + /* Request bridge PVID untagged when DSA_TAG_PROTO_NONE is set + * which forces the CPU port to be tagged in all VLANs. + */ + ds->untag_bridge_pvid = dev->tag_protocol == DSA_TAG_PROTO_NONE; + + ret = b53_reset_switch(dev); + if (ret) { + dev_err(ds->dev, "failed to reset switch\n"); + return ret; + } + + b53_reset_mib(dev); + + ret = b53_apply_config(dev); + if (ret) { + dev_err(ds->dev, "failed to apply configuration\n"); + return ret; + } + + /* Configure IMP/CPU port, disable all other ports. Enabled + * ports will be configured with .port_enable + */ + for (port = 0; port < dev->num_ports; port++) { + if (dsa_is_cpu_port(ds, port)) + b53_enable_cpu_port(dev, port); + else + b53_disable_port(ds, port); + } + + return b53_setup_devlink_resources(ds); +} + +static void b53_teardown(struct dsa_switch *ds) +{ + dsa_devlink_resources_unregister(ds); +} + +static void b53_force_link(struct b53_device *dev, int port, int link) +{ + u8 reg, val, off; + + /* Override the port settings */ + if (port == dev->imp_port) { + off = B53_PORT_OVERRIDE_CTRL; + val = PORT_OVERRIDE_EN; + } else { + off = B53_GMII_PORT_OVERRIDE_CTRL(port); + val = GMII_PO_EN; + } + + b53_read8(dev, B53_CTRL_PAGE, off, ®); + reg |= val; + if (link) + reg |= PORT_OVERRIDE_LINK; + else + reg &= ~PORT_OVERRIDE_LINK; + b53_write8(dev, B53_CTRL_PAGE, off, reg); +} + +static void b53_force_port_config(struct b53_device *dev, int port, + int speed, int duplex, + bool tx_pause, bool rx_pause) +{ + u8 reg, val, off; + + /* Override the port settings */ + if (port == dev->imp_port) { + off = B53_PORT_OVERRIDE_CTRL; + val = PORT_OVERRIDE_EN; + } else { + off = B53_GMII_PORT_OVERRIDE_CTRL(port); + val = GMII_PO_EN; + } + + b53_read8(dev, B53_CTRL_PAGE, off, ®); + reg |= val; + if (duplex == DUPLEX_FULL) + reg |= PORT_OVERRIDE_FULL_DUPLEX; + else + reg &= ~PORT_OVERRIDE_FULL_DUPLEX; + + switch (speed) { + case 2000: + reg |= PORT_OVERRIDE_SPEED_2000M; + fallthrough; + case SPEED_1000: + reg |= PORT_OVERRIDE_SPEED_1000M; + break; + case SPEED_100: + reg |= PORT_OVERRIDE_SPEED_100M; + break; + case SPEED_10: + reg |= PORT_OVERRIDE_SPEED_10M; + break; + default: + dev_err(dev->dev, "unknown speed: %d\n", speed); + return; + } + + if (rx_pause) + reg |= PORT_OVERRIDE_RX_FLOW; + if (tx_pause) + reg |= PORT_OVERRIDE_TX_FLOW; + + b53_write8(dev, B53_CTRL_PAGE, off, reg); +} + +static void b53_adjust_63xx_rgmii(struct dsa_switch *ds, int port, + phy_interface_t interface) +{ + struct b53_device *dev = ds->priv; + u8 rgmii_ctrl = 0, off; + + if (port == dev->imp_port) + off = B53_RGMII_CTRL_IMP; + else + off = B53_RGMII_CTRL_P(port); + + b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl); + + switch (interface) { + case PHY_INTERFACE_MODE_RGMII_ID: + rgmii_ctrl |= (RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC); + break; + case PHY_INTERFACE_MODE_RGMII_RXID: + rgmii_ctrl &= ~(RGMII_CTRL_DLL_TXC); + rgmii_ctrl |= RGMII_CTRL_DLL_RXC; + break; + case PHY_INTERFACE_MODE_RGMII_TXID: + rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC); + rgmii_ctrl |= RGMII_CTRL_DLL_TXC; + break; + case PHY_INTERFACE_MODE_RGMII: + default: + rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC); + break; + } + + if (port != dev->imp_port) { + if (is63268(dev)) + rgmii_ctrl |= RGMII_CTRL_MII_OVERRIDE; + + rgmii_ctrl |= RGMII_CTRL_ENABLE_GMII; + } + + b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl); + + dev_dbg(ds->dev, "Configured port %d for %s\n", port, + phy_modes(interface)); +} + +static void b53_adjust_link(struct dsa_switch *ds, int port, + struct phy_device *phydev) +{ + struct b53_device *dev = ds->priv; + struct ethtool_eee *p = &dev->ports[port].eee; + u8 rgmii_ctrl = 0, reg = 0, off; + bool tx_pause = false; + bool rx_pause = false; + + if (!phy_is_pseudo_fixed_link(phydev)) + return; + + /* Enable flow control on BCM5301x's CPU port */ + if (is5301x(dev) && dsa_is_cpu_port(ds, port)) + tx_pause = rx_pause = true; + + if (phydev->pause) { + if (phydev->asym_pause) + tx_pause = true; + rx_pause = true; + } + + b53_force_port_config(dev, port, phydev->speed, phydev->duplex, + tx_pause, rx_pause); + b53_force_link(dev, port, phydev->link); + + if (is63xx(dev) && port >= B53_63XX_RGMII0) + b53_adjust_63xx_rgmii(ds, port, phydev->interface); + + if (is531x5(dev) && phy_interface_is_rgmii(phydev)) { + if (port == dev->imp_port) + off = B53_RGMII_CTRL_IMP; + else + off = B53_RGMII_CTRL_P(port); + + /* Configure the port RGMII clock delay by DLL disabled and + * tx_clk aligned timing (restoring to reset defaults) + */ + b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl); + rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC | + RGMII_CTRL_TIMING_SEL); + + /* PHY_INTERFACE_MODE_RGMII_TXID means TX internal delay, make + * sure that we enable the port TX clock internal delay to + * account for this internal delay that is inserted, otherwise + * the switch won't be able to receive correctly. + * + * PHY_INTERFACE_MODE_RGMII means that we are not introducing + * any delay neither on transmission nor reception, so the + * BCM53125 must also be configured accordingly to account for + * the lack of delay and introduce + * + * The BCM53125 switch has its RX clock and TX clock control + * swapped, hence the reason why we modify the TX clock path in + * the "RGMII" case + */ + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) + rgmii_ctrl |= RGMII_CTRL_DLL_TXC; + if (phydev->interface == PHY_INTERFACE_MODE_RGMII) + rgmii_ctrl |= RGMII_CTRL_DLL_TXC | RGMII_CTRL_DLL_RXC; + rgmii_ctrl |= RGMII_CTRL_TIMING_SEL; + b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl); + + dev_info(ds->dev, "Configured port %d for %s\n", port, + phy_modes(phydev->interface)); + } + + /* configure MII port if necessary */ + if (is5325(dev)) { + b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, + ®); + + /* reverse mii needs to be enabled */ + if (!(reg & PORT_OVERRIDE_RV_MII_25)) { + b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, + reg | PORT_OVERRIDE_RV_MII_25); + b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL, + ®); + + if (!(reg & PORT_OVERRIDE_RV_MII_25)) { + dev_err(ds->dev, + "Failed to enable reverse MII mode\n"); + return; + } + } + } + + /* Re-negotiate EEE if it was enabled already */ + p->eee_enabled = b53_eee_init(ds, port, phydev); +} + +void b53_port_event(struct dsa_switch *ds, int port) +{ + struct b53_device *dev = ds->priv; + bool link; + u16 sts; + + b53_read16(dev, B53_STAT_PAGE, B53_LINK_STAT, &sts); + link = !!(sts & BIT(port)); + dsa_port_phylink_mac_change(ds, port, link); +} +EXPORT_SYMBOL(b53_port_event); + +static void b53_phylink_get_caps(struct dsa_switch *ds, int port, + struct phylink_config *config) +{ + struct b53_device *dev = ds->priv; + + /* Internal ports need GMII for PHYLIB */ + __set_bit(PHY_INTERFACE_MODE_GMII, config->supported_interfaces); + + /* These switches appear to support MII and RevMII too, but beyond + * this, the code gives very few clues. FIXME: We probably need more + * interface modes here. + * + * According to b53_srab_mux_init(), ports 3..5 can support: + * SGMII, MII, GMII, RGMII or INTERNAL depending on the MUX setting. + * However, the interface mode read from the MUX configuration is + * not passed back to DSA, so phylink uses NA. + * DT can specify RGMII for ports 0, 1. + * For MDIO, port 8 can be RGMII_TXID. + */ + __set_bit(PHY_INTERFACE_MODE_MII, config->supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_REVMII, config->supported_interfaces); + + config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | + MAC_10 | MAC_100; + + /* 5325/5365 are not capable of gigabit speeds, everything else is. + * Note: the original code also exclulded Gigagbit for MII, RevMII + * and 802.3z modes. MII and RevMII are not able to work above 100M, + * so will be excluded by the generic validator implementation. + * However, the exclusion of Gigabit for 802.3z just seems wrong. + */ + if (!(is5325(dev) || is5365(dev))) + config->mac_capabilities |= MAC_1000; + + /* Get the implementation specific capabilities */ + if (dev->ops->phylink_get_caps) + dev->ops->phylink_get_caps(dev, port, config); +} + +static struct phylink_pcs *b53_phylink_mac_select_pcs(struct dsa_switch *ds, + int port, + phy_interface_t interface) +{ + struct b53_device *dev = ds->priv; + + if (!dev->ops->phylink_mac_select_pcs) + return NULL; + + return dev->ops->phylink_mac_select_pcs(dev, port, interface); +} + +void b53_phylink_mac_config(struct dsa_switch *ds, int port, + unsigned int mode, + const struct phylink_link_state *state) +{ +} +EXPORT_SYMBOL(b53_phylink_mac_config); + +void b53_phylink_mac_link_down(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface) +{ + struct b53_device *dev = ds->priv; + + if (mode == MLO_AN_PHY) + return; + + if (mode == MLO_AN_FIXED) { + b53_force_link(dev, port, false); + return; + } + + if (phy_interface_mode_is_8023z(interface) && + dev->ops->serdes_link_set) + dev->ops->serdes_link_set(dev, port, mode, interface, false); +} +EXPORT_SYMBOL(b53_phylink_mac_link_down); + +void b53_phylink_mac_link_up(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface, + struct phy_device *phydev, + int speed, int duplex, + bool tx_pause, bool rx_pause) +{ + struct b53_device *dev = ds->priv; + + if (is63xx(dev) && port >= B53_63XX_RGMII0) + b53_adjust_63xx_rgmii(ds, port, interface); + + if (mode == MLO_AN_PHY) + return; + + if (mode == MLO_AN_FIXED) { + b53_force_port_config(dev, port, speed, duplex, + tx_pause, rx_pause); + b53_force_link(dev, port, true); + return; + } + + if (phy_interface_mode_is_8023z(interface) && + dev->ops->serdes_link_set) + dev->ops->serdes_link_set(dev, port, mode, interface, true); +} +EXPORT_SYMBOL(b53_phylink_mac_link_up); + +int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering, + struct netlink_ext_ack *extack) +{ + struct b53_device *dev = ds->priv; + + b53_enable_vlan(dev, port, dev->vlan_enabled, vlan_filtering); + + return 0; +} +EXPORT_SYMBOL(b53_vlan_filtering); + +static int b53_vlan_prepare(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan) +{ + struct b53_device *dev = ds->priv; + + if ((is5325(dev) || is5365(dev)) && vlan->vid == 0) + return -EOPNOTSUPP; + + /* Port 7 on 7278 connects to the ASP's UniMAC which is not capable of + * receiving VLAN tagged frames at all, we can still allow the port to + * be configured for egress untagged. + */ + if (dev->chip_id == BCM7278_DEVICE_ID && port == 7 && + !(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED)) + return -EINVAL; + + if (vlan->vid >= dev->num_vlans) + return -ERANGE; + + b53_enable_vlan(dev, port, true, ds->vlan_filtering); + + return 0; +} + +int b53_vlan_add(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan, + struct netlink_ext_ack *extack) +{ + struct b53_device *dev = ds->priv; + bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; + bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; + struct b53_vlan *vl; + int err; + + err = b53_vlan_prepare(ds, port, vlan); + if (err) + return err; + + vl = &dev->vlans[vlan->vid]; + + b53_get_vlan_entry(dev, vlan->vid, vl); + + if (vlan->vid == 0 && vlan->vid == b53_default_pvid(dev)) + untagged = true; + + vl->members |= BIT(port); + if (untagged && !b53_vlan_port_needs_forced_tagged(ds, port)) + vl->untag |= BIT(port); + else + vl->untag &= ~BIT(port); + + b53_set_vlan_entry(dev, vlan->vid, vl); + b53_fast_age_vlan(dev, vlan->vid); + + if (pvid && !dsa_is_cpu_port(ds, port)) { + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), + vlan->vid); + b53_fast_age_vlan(dev, vlan->vid); + } + + return 0; +} +EXPORT_SYMBOL(b53_vlan_add); + +int b53_vlan_del(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan) +{ + struct b53_device *dev = ds->priv; + bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; + struct b53_vlan *vl; + u16 pvid; + + b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid); + + vl = &dev->vlans[vlan->vid]; + + b53_get_vlan_entry(dev, vlan->vid, vl); + + vl->members &= ~BIT(port); + + if (pvid == vlan->vid) + pvid = b53_default_pvid(dev); + + if (untagged && !b53_vlan_port_needs_forced_tagged(ds, port)) + vl->untag &= ~(BIT(port)); + + b53_set_vlan_entry(dev, vlan->vid, vl); + b53_fast_age_vlan(dev, vlan->vid); + + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), pvid); + b53_fast_age_vlan(dev, pvid); + + return 0; +} +EXPORT_SYMBOL(b53_vlan_del); + +/* Address Resolution Logic routines. Caller must hold &dev->arl_mutex. */ +static int b53_arl_op_wait(struct b53_device *dev) +{ + unsigned int timeout = 10; + u8 reg; + + do { + b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, ®); + if (!(reg & ARLTBL_START_DONE)) + return 0; + + usleep_range(1000, 2000); + } while (timeout--); + + dev_warn(dev->dev, "timeout waiting for ARL to finish: 0x%02x\n", reg); + + return -ETIMEDOUT; +} + +static int b53_arl_rw_op(struct b53_device *dev, unsigned int op) +{ + u8 reg; + + if (op > ARLTBL_RW) + return -EINVAL; + + b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, ®); + reg |= ARLTBL_START_DONE; + if (op) + reg |= ARLTBL_RW; + else + reg &= ~ARLTBL_RW; + if (dev->vlan_enabled) + reg &= ~ARLTBL_IVL_SVL_SELECT; + else + reg |= ARLTBL_IVL_SVL_SELECT; + b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, reg); + + return b53_arl_op_wait(dev); +} + +static int b53_arl_read(struct b53_device *dev, u64 mac, + u16 vid, struct b53_arl_entry *ent, u8 *idx) +{ + DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES); + unsigned int i; + int ret; + + ret = b53_arl_op_wait(dev); + if (ret) + return ret; + + bitmap_zero(free_bins, dev->num_arl_bins); + + /* Read the bins */ + for (i = 0; i < dev->num_arl_bins; i++) { + u64 mac_vid; + u32 fwd_entry; + + b53_read64(dev, B53_ARLIO_PAGE, + B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid); + b53_read32(dev, B53_ARLIO_PAGE, + B53_ARLTBL_DATA_ENTRY(i), &fwd_entry); + b53_arl_to_entry(ent, mac_vid, fwd_entry); + + if (!(fwd_entry & ARLTBL_VALID)) { + set_bit(i, free_bins); + continue; + } + if ((mac_vid & ARLTBL_MAC_MASK) != mac) + continue; + if (dev->vlan_enabled && + ((mac_vid >> ARLTBL_VID_S) & ARLTBL_VID_MASK) != vid) + continue; + *idx = i; + return 0; + } + + *idx = find_first_bit(free_bins, dev->num_arl_bins); + return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT; +} + +static int b53_arl_op(struct b53_device *dev, int op, int port, + const unsigned char *addr, u16 vid, bool is_valid) +{ + struct b53_arl_entry ent; + u32 fwd_entry; + u64 mac, mac_vid = 0; + u8 idx = 0; + int ret; + + /* Convert the array into a 64-bit MAC */ + mac = ether_addr_to_u64(addr); + + /* Perform a read for the given MAC and VID */ + b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac); + b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid); + + /* Issue a read operation for this MAC */ + ret = b53_arl_rw_op(dev, 1); + if (ret) + return ret; + + ret = b53_arl_read(dev, mac, vid, &ent, &idx); + + /* If this is a read, just finish now */ + if (op) + return ret; + + switch (ret) { + case -ETIMEDOUT: + return ret; + case -ENOSPC: + dev_dbg(dev->dev, "{%pM,%.4d} no space left in ARL\n", + addr, vid); + return is_valid ? ret : 0; + case -ENOENT: + /* We could not find a matching MAC, so reset to a new entry */ + dev_dbg(dev->dev, "{%pM,%.4d} not found, using idx: %d\n", + addr, vid, idx); + fwd_entry = 0; + break; + default: + dev_dbg(dev->dev, "{%pM,%.4d} found, using idx: %d\n", + addr, vid, idx); + break; + } + + /* For multicast address, the port is a bitmask and the validity + * is determined by having at least one port being still active + */ + if (!is_multicast_ether_addr(addr)) { + ent.port = port; + ent.is_valid = is_valid; + } else { + if (is_valid) + ent.port |= BIT(port); + else + ent.port &= ~BIT(port); + + ent.is_valid = !!(ent.port); + } + + ent.vid = vid; + ent.is_static = true; + ent.is_age = false; + memcpy(ent.mac, addr, ETH_ALEN); + b53_arl_from_entry(&mac_vid, &fwd_entry, &ent); + + b53_write64(dev, B53_ARLIO_PAGE, + B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid); + b53_write32(dev, B53_ARLIO_PAGE, + B53_ARLTBL_DATA_ENTRY(idx), fwd_entry); + + return b53_arl_rw_op(dev, 0); +} + +int b53_fdb_add(struct dsa_switch *ds, int port, + const unsigned char *addr, u16 vid, + struct dsa_db db) +{ + struct b53_device *priv = ds->priv; + int ret; + + /* 5325 and 5365 require some more massaging, but could + * be supported eventually + */ + if (is5325(priv) || is5365(priv)) + return -EOPNOTSUPP; + + mutex_lock(&priv->arl_mutex); + ret = b53_arl_op(priv, 0, port, addr, vid, true); + mutex_unlock(&priv->arl_mutex); + + return ret; +} +EXPORT_SYMBOL(b53_fdb_add); + +int b53_fdb_del(struct dsa_switch *ds, int port, + const unsigned char *addr, u16 vid, + struct dsa_db db) +{ + struct b53_device *priv = ds->priv; + int ret; + + mutex_lock(&priv->arl_mutex); + ret = b53_arl_op(priv, 0, port, addr, vid, false); + mutex_unlock(&priv->arl_mutex); + + return ret; +} +EXPORT_SYMBOL(b53_fdb_del); + +static int b53_arl_search_wait(struct b53_device *dev) +{ + unsigned int timeout = 1000; + u8 reg; + + do { + b53_read8(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, ®); + if (!(reg & ARL_SRCH_STDN)) + return 0; + + if (reg & ARL_SRCH_VLID) + return 0; + + usleep_range(1000, 2000); + } while (timeout--); + + return -ETIMEDOUT; +} + +static void b53_arl_search_rd(struct b53_device *dev, u8 idx, + struct b53_arl_entry *ent) +{ + u64 mac_vid; + u32 fwd_entry; + + b53_read64(dev, B53_ARLIO_PAGE, + B53_ARL_SRCH_RSTL_MACVID(idx), &mac_vid); + b53_read32(dev, B53_ARLIO_PAGE, + B53_ARL_SRCH_RSTL(idx), &fwd_entry); + b53_arl_to_entry(ent, mac_vid, fwd_entry); +} + +static int b53_fdb_copy(int port, const struct b53_arl_entry *ent, + dsa_fdb_dump_cb_t *cb, void *data) +{ + if (!ent->is_valid) + return 0; + + if (port != ent->port) + return 0; + + return cb(ent->mac, ent->vid, ent->is_static, data); +} + +int b53_fdb_dump(struct dsa_switch *ds, int port, + dsa_fdb_dump_cb_t *cb, void *data) +{ + struct b53_device *priv = ds->priv; + struct b53_arl_entry results[2]; + unsigned int count = 0; + int ret; + u8 reg; + + mutex_lock(&priv->arl_mutex); + + /* Start search operation */ + reg = ARL_SRCH_STDN; + b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg); + + do { + ret = b53_arl_search_wait(priv); + if (ret) + break; + + b53_arl_search_rd(priv, 0, &results[0]); + ret = b53_fdb_copy(port, &results[0], cb, data); + if (ret) + break; + + if (priv->num_arl_bins > 2) { + b53_arl_search_rd(priv, 1, &results[1]); + ret = b53_fdb_copy(port, &results[1], cb, data); + if (ret) + break; + + if (!results[0].is_valid && !results[1].is_valid) + break; + } + + } while (count++ < b53_max_arl_entries(priv) / 2); + + mutex_unlock(&priv->arl_mutex); + + return 0; +} +EXPORT_SYMBOL(b53_fdb_dump); + +int b53_mdb_add(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_mdb *mdb, + struct dsa_db db) +{ + struct b53_device *priv = ds->priv; + int ret; + + /* 5325 and 5365 require some more massaging, but could + * be supported eventually + */ + if (is5325(priv) || is5365(priv)) + return -EOPNOTSUPP; + + mutex_lock(&priv->arl_mutex); + ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true); + mutex_unlock(&priv->arl_mutex); + + return ret; +} +EXPORT_SYMBOL(b53_mdb_add); + +int b53_mdb_del(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_mdb *mdb, + struct dsa_db db) +{ + struct b53_device *priv = ds->priv; + int ret; + + mutex_lock(&priv->arl_mutex); + ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false); + mutex_unlock(&priv->arl_mutex); + if (ret) + dev_err(ds->dev, "failed to delete MDB entry\n"); + + return ret; +} +EXPORT_SYMBOL(b53_mdb_del); + +int b53_br_join(struct dsa_switch *ds, int port, struct dsa_bridge bridge, + bool *tx_fwd_offload, struct netlink_ext_ack *extack) +{ + struct b53_device *dev = ds->priv; + s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index; + u16 pvlan, reg; + unsigned int i; + + /* On 7278, port 7 which connects to the ASP should only receive + * traffic from matching CFP rules. + */ + if (dev->chip_id == BCM7278_DEVICE_ID && port == 7) + return -EINVAL; + + /* Make this port leave the all VLANs join since we will have proper + * VLAN entries from now on + */ + if (is58xx(dev)) { + b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, ®); + reg &= ~BIT(port); + if ((reg & BIT(cpu_port)) == BIT(cpu_port)) + reg &= ~BIT(cpu_port); + b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg); + } + + b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan); + + b53_for_each_port(dev, i) { + if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge)) + continue; + + /* Add this local port to the remote port VLAN control + * membership and update the remote port bitmask + */ + b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), ®); + reg |= BIT(port); + b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg); + dev->ports[i].vlan_ctl_mask = reg; + + pvlan |= BIT(i); + } + + /* Configure the local port VLAN control membership to include + * remote ports and update the local port bitmask + */ + b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan); + dev->ports[port].vlan_ctl_mask = pvlan; + + return 0; +} +EXPORT_SYMBOL(b53_br_join); + +void b53_br_leave(struct dsa_switch *ds, int port, struct dsa_bridge bridge) +{ + struct b53_device *dev = ds->priv; + struct b53_vlan *vl = &dev->vlans[0]; + s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index; + unsigned int i; + u16 pvlan, reg, pvid; + + b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan); + + b53_for_each_port(dev, i) { + /* Don't touch the remaining ports */ + if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge)) + continue; + + b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), ®); + reg &= ~BIT(port); + b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg); + dev->ports[port].vlan_ctl_mask = reg; + + /* Prevent self removal to preserve isolation */ + if (port != i) + pvlan &= ~BIT(i); + } + + b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan); + dev->ports[port].vlan_ctl_mask = pvlan; + + pvid = b53_default_pvid(dev); + + /* Make this port join all VLANs without VLAN entries */ + if (is58xx(dev)) { + b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, ®); + reg |= BIT(port); + if (!(reg & BIT(cpu_port))) + reg |= BIT(cpu_port); + b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg); + } else { + b53_get_vlan_entry(dev, pvid, vl); + vl->members |= BIT(port) | BIT(cpu_port); + vl->untag |= BIT(port) | BIT(cpu_port); + b53_set_vlan_entry(dev, pvid, vl); + } +} +EXPORT_SYMBOL(b53_br_leave); + +void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state) +{ + struct b53_device *dev = ds->priv; + u8 hw_state; + u8 reg; + + switch (state) { + case BR_STATE_DISABLED: + hw_state = PORT_CTRL_DIS_STATE; + break; + case BR_STATE_LISTENING: + hw_state = PORT_CTRL_LISTEN_STATE; + break; + case BR_STATE_LEARNING: + hw_state = PORT_CTRL_LEARN_STATE; + break; + case BR_STATE_FORWARDING: + hw_state = PORT_CTRL_FWD_STATE; + break; + case BR_STATE_BLOCKING: + hw_state = PORT_CTRL_BLOCK_STATE; + break; + default: + dev_err(ds->dev, "invalid STP state: %d\n", state); + return; + } + + b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), ®); + reg &= ~PORT_CTRL_STP_STATE_MASK; + reg |= hw_state; + b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg); +} +EXPORT_SYMBOL(b53_br_set_stp_state); + +void b53_br_fast_age(struct dsa_switch *ds, int port) +{ + struct b53_device *dev = ds->priv; + + if (b53_fast_age_port(dev, port)) + dev_err(ds->dev, "fast ageing failed\n"); +} +EXPORT_SYMBOL(b53_br_fast_age); + +int b53_br_flags_pre(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack) +{ + if (flags.mask & ~(BR_FLOOD | BR_MCAST_FLOOD | BR_LEARNING)) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL(b53_br_flags_pre); + +int b53_br_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack) +{ + if (flags.mask & BR_FLOOD) + b53_port_set_ucast_flood(ds->priv, port, + !!(flags.val & BR_FLOOD)); + if (flags.mask & BR_MCAST_FLOOD) + b53_port_set_mcast_flood(ds->priv, port, + !!(flags.val & BR_MCAST_FLOOD)); + if (flags.mask & BR_LEARNING) + b53_port_set_learning(ds->priv, port, + !!(flags.val & BR_LEARNING)); + + return 0; +} +EXPORT_SYMBOL(b53_br_flags); + +static bool b53_possible_cpu_port(struct dsa_switch *ds, int port) +{ + /* Broadcom switches will accept enabling Broadcom tags on the + * following ports: 5, 7 and 8, any other port is not supported + */ + switch (port) { + case B53_CPU_PORT_25: + case 7: + case B53_CPU_PORT: + return true; + } + + return false; +} + +static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port, + enum dsa_tag_protocol tag_protocol) +{ + bool ret = b53_possible_cpu_port(ds, port); + + if (!ret) { + dev_warn(ds->dev, "Port %d is not Broadcom tag capable\n", + port); + return ret; + } + + switch (tag_protocol) { + case DSA_TAG_PROTO_BRCM: + case DSA_TAG_PROTO_BRCM_PREPEND: + dev_warn(ds->dev, + "Port %d is stacked to Broadcom tag switch\n", port); + ret = false; + break; + default: + ret = true; + break; + } + + return ret; +} + +enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port, + enum dsa_tag_protocol mprot) +{ + struct b53_device *dev = ds->priv; + + if (!b53_can_enable_brcm_tags(ds, port, mprot)) { + dev->tag_protocol = DSA_TAG_PROTO_NONE; + goto out; + } + + /* Older models require a different 6 byte tag */ + if (is5325(dev) || is5365(dev) || is63xx(dev)) { + dev->tag_protocol = DSA_TAG_PROTO_BRCM_LEGACY; + goto out; + } + + /* Broadcom BCM58xx chips have a flow accelerator on Port 8 + * which requires us to use the prepended Broadcom tag type + */ + if (dev->chip_id == BCM58XX_DEVICE_ID && port == B53_CPU_PORT) { + dev->tag_protocol = DSA_TAG_PROTO_BRCM_PREPEND; + goto out; + } + + dev->tag_protocol = DSA_TAG_PROTO_BRCM; +out: + return dev->tag_protocol; +} +EXPORT_SYMBOL(b53_get_tag_protocol); + +int b53_mirror_add(struct dsa_switch *ds, int port, + struct dsa_mall_mirror_tc_entry *mirror, bool ingress, + struct netlink_ext_ack *extack) +{ + struct b53_device *dev = ds->priv; + u16 reg, loc; + + if (ingress) + loc = B53_IG_MIR_CTL; + else + loc = B53_EG_MIR_CTL; + + b53_read16(dev, B53_MGMT_PAGE, loc, ®); + reg |= BIT(port); + b53_write16(dev, B53_MGMT_PAGE, loc, reg); + + b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, ®); + reg &= ~CAP_PORT_MASK; + reg |= mirror->to_local_port; + reg |= MIRROR_EN; + b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg); + + return 0; +} +EXPORT_SYMBOL(b53_mirror_add); + +void b53_mirror_del(struct dsa_switch *ds, int port, + struct dsa_mall_mirror_tc_entry *mirror) +{ + struct b53_device *dev = ds->priv; + bool loc_disable = false, other_loc_disable = false; + u16 reg, loc; + + if (mirror->ingress) + loc = B53_IG_MIR_CTL; + else + loc = B53_EG_MIR_CTL; + + /* Update the desired ingress/egress register */ + b53_read16(dev, B53_MGMT_PAGE, loc, ®); + reg &= ~BIT(port); + if (!(reg & MIRROR_MASK)) + loc_disable = true; + b53_write16(dev, B53_MGMT_PAGE, loc, reg); + + /* Now look at the other one to know if we can disable mirroring + * entirely + */ + if (mirror->ingress) + b53_read16(dev, B53_MGMT_PAGE, B53_EG_MIR_CTL, ®); + else + b53_read16(dev, B53_MGMT_PAGE, B53_IG_MIR_CTL, ®); + if (!(reg & MIRROR_MASK)) + other_loc_disable = true; + + b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, ®); + /* Both no longer have ports, let's disable mirroring */ + if (loc_disable && other_loc_disable) { + reg &= ~MIRROR_EN; + reg &= ~mirror->to_local_port; + } + b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg); +} +EXPORT_SYMBOL(b53_mirror_del); + +void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable) +{ + struct b53_device *dev = ds->priv; + u16 reg; + + b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, ®); + if (enable) + reg |= BIT(port); + else + reg &= ~BIT(port); + b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg); +} +EXPORT_SYMBOL(b53_eee_enable_set); + + +/* Returns 0 if EEE was not enabled, or 1 otherwise + */ +int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy) +{ + int ret; + + ret = phy_init_eee(phy, false); + if (ret) + return 0; + + b53_eee_enable_set(ds, port, true); + + return 1; +} +EXPORT_SYMBOL(b53_eee_init); + +int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e) +{ + struct b53_device *dev = ds->priv; + struct ethtool_eee *p = &dev->ports[port].eee; + u16 reg; + + if (is5325(dev) || is5365(dev)) + return -EOPNOTSUPP; + + b53_read16(dev, B53_EEE_PAGE, B53_EEE_LPI_INDICATE, ®); + e->eee_enabled = p->eee_enabled; + e->eee_active = !!(reg & BIT(port)); + + return 0; +} +EXPORT_SYMBOL(b53_get_mac_eee); + +int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e) +{ + struct b53_device *dev = ds->priv; + struct ethtool_eee *p = &dev->ports[port].eee; + + if (is5325(dev) || is5365(dev)) + return -EOPNOTSUPP; + + p->eee_enabled = e->eee_enabled; + b53_eee_enable_set(ds, port, e->eee_enabled); + + return 0; +} +EXPORT_SYMBOL(b53_set_mac_eee); + +static int b53_change_mtu(struct dsa_switch *ds, int port, int mtu) +{ + struct b53_device *dev = ds->priv; + bool enable_jumbo; + bool allow_10_100; + + if (is5325(dev) || is5365(dev)) + return -EOPNOTSUPP; + + enable_jumbo = (mtu >= JMS_MIN_SIZE); + allow_10_100 = (dev->chip_id == BCM583XX_DEVICE_ID); + + return b53_set_jumbo(dev, enable_jumbo, allow_10_100); +} + +static int b53_get_max_mtu(struct dsa_switch *ds, int port) +{ + return JMS_MAX_SIZE; +} + +static const struct dsa_switch_ops b53_switch_ops = { + .get_tag_protocol = b53_get_tag_protocol, + .setup = b53_setup, + .teardown = b53_teardown, + .get_strings = b53_get_strings, + .get_ethtool_stats = b53_get_ethtool_stats, + .get_sset_count = b53_get_sset_count, + .get_ethtool_phy_stats = b53_get_ethtool_phy_stats, + .phy_read = b53_phy_read16, + .phy_write = b53_phy_write16, + .adjust_link = b53_adjust_link, + .phylink_get_caps = b53_phylink_get_caps, + .phylink_mac_select_pcs = b53_phylink_mac_select_pcs, + .phylink_mac_config = b53_phylink_mac_config, + .phylink_mac_link_down = b53_phylink_mac_link_down, + .phylink_mac_link_up = b53_phylink_mac_link_up, + .port_enable = b53_enable_port, + .port_disable = b53_disable_port, + .get_mac_eee = b53_get_mac_eee, + .set_mac_eee = b53_set_mac_eee, + .port_bridge_join = b53_br_join, + .port_bridge_leave = b53_br_leave, + .port_pre_bridge_flags = b53_br_flags_pre, + .port_bridge_flags = b53_br_flags, + .port_stp_state_set = b53_br_set_stp_state, + .port_fast_age = b53_br_fast_age, + .port_vlan_filtering = b53_vlan_filtering, + .port_vlan_add = b53_vlan_add, + .port_vlan_del = b53_vlan_del, + .port_fdb_dump = b53_fdb_dump, + .port_fdb_add = b53_fdb_add, + .port_fdb_del = b53_fdb_del, + .port_mirror_add = b53_mirror_add, + .port_mirror_del = b53_mirror_del, + .port_mdb_add = b53_mdb_add, + .port_mdb_del = b53_mdb_del, + .port_max_mtu = b53_get_max_mtu, + .port_change_mtu = b53_change_mtu, +}; + +struct b53_chip_data { + u32 chip_id; + const char *dev_name; + u16 vlans; + u16 enabled_ports; + u8 imp_port; + u8 cpu_port; + u8 vta_regs[3]; + u8 arl_bins; + u16 arl_buckets; + u8 duplex_reg; + u8 jumbo_pm_reg; + u8 jumbo_size_reg; +}; + +#define B53_VTA_REGS \ + { B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY } +#define B53_VTA_REGS_9798 \ + { B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 } +#define B53_VTA_REGS_63XX \ + { B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX } + +static const struct b53_chip_data b53_switch_chips[] = { + { + .chip_id = BCM5325_DEVICE_ID, + .dev_name = "BCM5325", + .vlans = 16, + .enabled_ports = 0x3f, + .arl_bins = 2, + .arl_buckets = 1024, + .imp_port = 5, + .duplex_reg = B53_DUPLEX_STAT_FE, + }, + { + .chip_id = BCM5365_DEVICE_ID, + .dev_name = "BCM5365", + .vlans = 256, + .enabled_ports = 0x3f, + .arl_bins = 2, + .arl_buckets = 1024, + .imp_port = 5, + .duplex_reg = B53_DUPLEX_STAT_FE, + }, + { + .chip_id = BCM5389_DEVICE_ID, + .dev_name = "BCM5389", + .vlans = 4096, + .enabled_ports = 0x11f, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM5395_DEVICE_ID, + .dev_name = "BCM5395", + .vlans = 4096, + .enabled_ports = 0x11f, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM5397_DEVICE_ID, + .dev_name = "BCM5397", + .vlans = 4096, + .enabled_ports = 0x11f, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS_9798, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM5398_DEVICE_ID, + .dev_name = "BCM5398", + .vlans = 4096, + .enabled_ports = 0x17f, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS_9798, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM53115_DEVICE_ID, + .dev_name = "BCM53115", + .vlans = 4096, + .enabled_ports = 0x11f, + .arl_bins = 4, + .arl_buckets = 1024, + .vta_regs = B53_VTA_REGS, + .imp_port = 8, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM53125_DEVICE_ID, + .dev_name = "BCM53125", + .vlans = 4096, + .enabled_ports = 0x1ff, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM53128_DEVICE_ID, + .dev_name = "BCM53128", + .vlans = 4096, + .enabled_ports = 0x1ff, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM63XX_DEVICE_ID, + .dev_name = "BCM63xx", + .vlans = 4096, + .enabled_ports = 0, /* pdata must provide them */ + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS_63XX, + .duplex_reg = B53_DUPLEX_STAT_63XX, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX, + }, + { + .chip_id = BCM63268_DEVICE_ID, + .dev_name = "BCM63268", + .vlans = 4096, + .enabled_ports = 0, /* pdata must provide them */ + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS_63XX, + .duplex_reg = B53_DUPLEX_STAT_63XX, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX, + }, + { + .chip_id = BCM53010_DEVICE_ID, + .dev_name = "BCM53010", + .vlans = 4096, + .enabled_ports = 0x1bf, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM53011_DEVICE_ID, + .dev_name = "BCM53011", + .vlans = 4096, + .enabled_ports = 0x1bf, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM53012_DEVICE_ID, + .dev_name = "BCM53012", + .vlans = 4096, + .enabled_ports = 0x1bf, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM53018_DEVICE_ID, + .dev_name = "BCM53018", + .vlans = 4096, + .enabled_ports = 0x1bf, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM53019_DEVICE_ID, + .dev_name = "BCM53019", + .vlans = 4096, + .enabled_ports = 0x1bf, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM58XX_DEVICE_ID, + .dev_name = "BCM585xx/586xx/88312", + .vlans = 4096, + .enabled_ports = 0x1ff, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM583XX_DEVICE_ID, + .dev_name = "BCM583xx/11360", + .vlans = 4096, + .enabled_ports = 0x103, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + /* Starfighter 2 */ + { + .chip_id = BCM4908_DEVICE_ID, + .dev_name = "BCM4908", + .vlans = 4096, + .enabled_ports = 0x1bf, + .arl_bins = 4, + .arl_buckets = 256, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM7445_DEVICE_ID, + .dev_name = "BCM7445", + .vlans = 4096, + .enabled_ports = 0x1ff, + .arl_bins = 4, + .arl_buckets = 1024, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM7278_DEVICE_ID, + .dev_name = "BCM7278", + .vlans = 4096, + .enabled_ports = 0x1ff, + .arl_bins = 4, + .arl_buckets = 256, + .imp_port = 8, + .vta_regs = B53_VTA_REGS, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, + { + .chip_id = BCM53134_DEVICE_ID, + .dev_name = "BCM53134", + .vlans = 4096, + .enabled_ports = 0x12f, + .imp_port = 8, + .cpu_port = B53_CPU_PORT, + .vta_regs = B53_VTA_REGS, + .arl_bins = 4, + .arl_buckets = 1024, + .duplex_reg = B53_DUPLEX_STAT_GE, + .jumbo_pm_reg = B53_JUMBO_PORT_MASK, + .jumbo_size_reg = B53_JUMBO_MAX_SIZE, + }, +}; + +static int b53_switch_init(struct b53_device *dev) +{ + unsigned int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) { + const struct b53_chip_data *chip = &b53_switch_chips[i]; + + if (chip->chip_id == dev->chip_id) { + if (!dev->enabled_ports) + dev->enabled_ports = chip->enabled_ports; + dev->name = chip->dev_name; + dev->duplex_reg = chip->duplex_reg; + dev->vta_regs[0] = chip->vta_regs[0]; + dev->vta_regs[1] = chip->vta_regs[1]; + dev->vta_regs[2] = chip->vta_regs[2]; + dev->jumbo_pm_reg = chip->jumbo_pm_reg; + dev->imp_port = chip->imp_port; + dev->num_vlans = chip->vlans; + dev->num_arl_bins = chip->arl_bins; + dev->num_arl_buckets = chip->arl_buckets; + break; + } + } + + /* check which BCM5325x version we have */ + if (is5325(dev)) { + u8 vc4; + + b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4); + + /* check reserved bits */ + switch (vc4 & 3) { + case 1: + /* BCM5325E */ + break; + case 3: + /* BCM5325F - do not use port 4 */ + dev->enabled_ports &= ~BIT(4); + break; + default: +/* On the BCM47XX SoCs this is the supported internal switch.*/ +#ifndef CONFIG_BCM47XX + /* BCM5325M */ + return -EINVAL; +#else + break; +#endif + } + } + + dev->num_ports = fls(dev->enabled_ports); + + dev->ds->num_ports = min_t(unsigned int, dev->num_ports, DSA_MAX_PORTS); + + /* Include non standard CPU port built-in PHYs to be probed */ + if (is539x(dev) || is531x5(dev)) { + for (i = 0; i < dev->num_ports; i++) { + if (!(dev->ds->phys_mii_mask & BIT(i)) && + !b53_possible_cpu_port(dev->ds, i)) + dev->ds->phys_mii_mask |= BIT(i); + } + } + + dev->ports = devm_kcalloc(dev->dev, + dev->num_ports, sizeof(struct b53_port), + GFP_KERNEL); + if (!dev->ports) + return -ENOMEM; + + dev->vlans = devm_kcalloc(dev->dev, + dev->num_vlans, sizeof(struct b53_vlan), + GFP_KERNEL); + if (!dev->vlans) + return -ENOMEM; + + dev->reset_gpio = b53_switch_get_reset_gpio(dev); + if (dev->reset_gpio >= 0) { + ret = devm_gpio_request_one(dev->dev, dev->reset_gpio, + GPIOF_OUT_INIT_HIGH, "robo_reset"); + if (ret) + return ret; + } + + return 0; +} + +struct b53_device *b53_switch_alloc(struct device *base, + const struct b53_io_ops *ops, + void *priv) +{ + struct dsa_switch *ds; + struct b53_device *dev; + + ds = devm_kzalloc(base, sizeof(*ds), GFP_KERNEL); + if (!ds) + return NULL; + + ds->dev = base; + + dev = devm_kzalloc(base, sizeof(*dev), GFP_KERNEL); + if (!dev) + return NULL; + + ds->priv = dev; + dev->dev = base; + + dev->ds = ds; + dev->priv = priv; + dev->ops = ops; + ds->ops = &b53_switch_ops; + dev->vlan_enabled = true; + /* Let DSA handle the case were multiple bridges span the same switch + * device and different VLAN awareness settings are requested, which + * would be breaking filtering semantics for any of the other bridge + * devices. (not hardware supported) + */ + ds->vlan_filtering_is_global = true; + + mutex_init(&dev->reg_mutex); + mutex_init(&dev->stats_mutex); + mutex_init(&dev->arl_mutex); + + return dev; +} +EXPORT_SYMBOL(b53_switch_alloc); + +int b53_switch_detect(struct b53_device *dev) +{ + u32 id32; + u16 tmp; + u8 id8; + int ret; + + ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8); + if (ret) + return ret; + + switch (id8) { + case 0: + /* BCM5325 and BCM5365 do not have this register so reads + * return 0. But the read operation did succeed, so assume this + * is one of them. + * + * Next check if we can write to the 5325's VTA register; for + * 5365 it is read only. + */ + b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf); + b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp); + + if (tmp == 0xf) + dev->chip_id = BCM5325_DEVICE_ID; + else + dev->chip_id = BCM5365_DEVICE_ID; + break; + case BCM5389_DEVICE_ID: + case BCM5395_DEVICE_ID: + case BCM5397_DEVICE_ID: + case BCM5398_DEVICE_ID: + dev->chip_id = id8; + break; + default: + ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32); + if (ret) + return ret; + + switch (id32) { + case BCM53115_DEVICE_ID: + case BCM53125_DEVICE_ID: + case BCM53128_DEVICE_ID: + case BCM53010_DEVICE_ID: + case BCM53011_DEVICE_ID: + case BCM53012_DEVICE_ID: + case BCM53018_DEVICE_ID: + case BCM53019_DEVICE_ID: + case BCM53134_DEVICE_ID: + dev->chip_id = id32; + break; + default: + dev_err(dev->dev, + "unsupported switch detected (BCM53%02x/BCM%x)\n", + id8, id32); + return -ENODEV; + } + } + + if (dev->chip_id == BCM5325_DEVICE_ID) + return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25, + &dev->core_rev); + else + return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID, + &dev->core_rev); +} +EXPORT_SYMBOL(b53_switch_detect); + +int b53_switch_register(struct b53_device *dev) +{ + int ret; + + if (dev->pdata) { + dev->chip_id = dev->pdata->chip_id; + dev->enabled_ports = dev->pdata->enabled_ports; + } + + if (!dev->chip_id && b53_switch_detect(dev)) + return -EINVAL; + + ret = b53_switch_init(dev); + if (ret) + return ret; + + dev_info(dev->dev, "found switch: %s, rev %i\n", + dev->name, dev->core_rev); + + return dsa_register_switch(dev->ds); +} +EXPORT_SYMBOL(b53_switch_register); + +MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>"); +MODULE_DESCRIPTION("B53 switch library"); +MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/net/dsa/b53/b53_mdio.c b/drivers/net/dsa/b53/b53_mdio.c new file mode 100644 index 0000000000..4d55d8d183 --- /dev/null +++ b/drivers/net/dsa/b53/b53_mdio.c @@ -0,0 +1,403 @@ +/* + * B53 register access through MII registers + * + * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/kernel.h> +#include <linux/phy.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/delay.h> +#include <linux/brcmphy.h> +#include <linux/rtnetlink.h> +#include <net/dsa.h> + +#include "b53_priv.h" + +/* MII registers */ +#define REG_MII_PAGE 0x10 /* MII Page register */ +#define REG_MII_ADDR 0x11 /* MII Address register */ +#define REG_MII_DATA0 0x18 /* MII Data register 0 */ +#define REG_MII_DATA1 0x19 /* MII Data register 1 */ +#define REG_MII_DATA2 0x1a /* MII Data register 2 */ +#define REG_MII_DATA3 0x1b /* MII Data register 3 */ + +#define REG_MII_PAGE_ENABLE BIT(0) +#define REG_MII_ADDR_WRITE BIT(0) +#define REG_MII_ADDR_READ BIT(1) + +static int b53_mdio_op(struct b53_device *dev, u8 page, u8 reg, u16 op) +{ + int i; + u16 v; + int ret; + struct mii_bus *bus = dev->priv; + + if (dev->current_page != page) { + /* set page number */ + v = (page << 8) | REG_MII_PAGE_ENABLE; + ret = mdiobus_write_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_PAGE, v); + if (ret) + return ret; + dev->current_page = page; + } + + /* set register address */ + v = (reg << 8) | op; + ret = mdiobus_write_nested(bus, BRCM_PSEUDO_PHY_ADDR, REG_MII_ADDR, v); + if (ret) + return ret; + + /* check if operation completed */ + for (i = 0; i < 5; ++i) { + v = mdiobus_read_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_ADDR); + if (!(v & (REG_MII_ADDR_WRITE | REG_MII_ADDR_READ))) + break; + usleep_range(10, 100); + } + + if (WARN_ON(i == 5)) + return -EIO; + + return 0; +} + +static int b53_mdio_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val) +{ + struct mii_bus *bus = dev->priv; + int ret; + + ret = b53_mdio_op(dev, page, reg, REG_MII_ADDR_READ); + if (ret) + return ret; + + *val = mdiobus_read_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA0) & 0xff; + + return 0; +} + +static int b53_mdio_read16(struct b53_device *dev, u8 page, u8 reg, u16 *val) +{ + struct mii_bus *bus = dev->priv; + int ret; + + ret = b53_mdio_op(dev, page, reg, REG_MII_ADDR_READ); + if (ret) + return ret; + + *val = mdiobus_read_nested(bus, BRCM_PSEUDO_PHY_ADDR, REG_MII_DATA0); + + return 0; +} + +static int b53_mdio_read32(struct b53_device *dev, u8 page, u8 reg, u32 *val) +{ + struct mii_bus *bus = dev->priv; + int ret; + + ret = b53_mdio_op(dev, page, reg, REG_MII_ADDR_READ); + if (ret) + return ret; + + *val = mdiobus_read_nested(bus, BRCM_PSEUDO_PHY_ADDR, REG_MII_DATA0); + *val |= mdiobus_read_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA1) << 16; + + return 0; +} + +static int b53_mdio_read48(struct b53_device *dev, u8 page, u8 reg, u64 *val) +{ + struct mii_bus *bus = dev->priv; + u64 temp = 0; + int i; + int ret; + + ret = b53_mdio_op(dev, page, reg, REG_MII_ADDR_READ); + if (ret) + return ret; + + for (i = 2; i >= 0; i--) { + temp <<= 16; + temp |= mdiobus_read_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA0 + i); + } + + *val = temp; + + return 0; +} + +static int b53_mdio_read64(struct b53_device *dev, u8 page, u8 reg, u64 *val) +{ + struct mii_bus *bus = dev->priv; + u64 temp = 0; + int i; + int ret; + + ret = b53_mdio_op(dev, page, reg, REG_MII_ADDR_READ); + if (ret) + return ret; + + for (i = 3; i >= 0; i--) { + temp <<= 16; + temp |= mdiobus_read_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA0 + i); + } + + *val = temp; + + return 0; +} + +static int b53_mdio_write8(struct b53_device *dev, u8 page, u8 reg, u8 value) +{ + struct mii_bus *bus = dev->priv; + int ret; + + ret = mdiobus_write_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA0, value); + if (ret) + return ret; + + return b53_mdio_op(dev, page, reg, REG_MII_ADDR_WRITE); +} + +static int b53_mdio_write16(struct b53_device *dev, u8 page, u8 reg, + u16 value) +{ + struct mii_bus *bus = dev->priv; + int ret; + + ret = mdiobus_write_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA0, value); + if (ret) + return ret; + + return b53_mdio_op(dev, page, reg, REG_MII_ADDR_WRITE); +} + +static int b53_mdio_write32(struct b53_device *dev, u8 page, u8 reg, + u32 value) +{ + struct mii_bus *bus = dev->priv; + unsigned int i; + u32 temp = value; + + for (i = 0; i < 2; i++) { + int ret = mdiobus_write_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA0 + i, + temp & 0xffff); + if (ret) + return ret; + temp >>= 16; + } + + return b53_mdio_op(dev, page, reg, REG_MII_ADDR_WRITE); +} + +static int b53_mdio_write48(struct b53_device *dev, u8 page, u8 reg, + u64 value) +{ + struct mii_bus *bus = dev->priv; + unsigned int i; + u64 temp = value; + + for (i = 0; i < 3; i++) { + int ret = mdiobus_write_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA0 + i, + temp & 0xffff); + if (ret) + return ret; + temp >>= 16; + } + + return b53_mdio_op(dev, page, reg, REG_MII_ADDR_WRITE); +} + +static int b53_mdio_write64(struct b53_device *dev, u8 page, u8 reg, + u64 value) +{ + struct mii_bus *bus = dev->priv; + unsigned int i; + u64 temp = value; + + for (i = 0; i < 4; i++) { + int ret = mdiobus_write_nested(bus, BRCM_PSEUDO_PHY_ADDR, + REG_MII_DATA0 + i, + temp & 0xffff); + if (ret) + return ret; + temp >>= 16; + } + + return b53_mdio_op(dev, page, reg, REG_MII_ADDR_WRITE); +} + +static int b53_mdio_phy_read16(struct b53_device *dev, int addr, int reg, + u16 *value) +{ + struct mii_bus *bus = dev->priv; + + *value = mdiobus_read_nested(bus, addr, reg); + + return 0; +} + +static int b53_mdio_phy_write16(struct b53_device *dev, int addr, int reg, + u16 value) +{ + struct mii_bus *bus = dev->bus; + + return mdiobus_write_nested(bus, addr, reg, value); +} + +static const struct b53_io_ops b53_mdio_ops = { + .read8 = b53_mdio_read8, + .read16 = b53_mdio_read16, + .read32 = b53_mdio_read32, + .read48 = b53_mdio_read48, + .read64 = b53_mdio_read64, + .write8 = b53_mdio_write8, + .write16 = b53_mdio_write16, + .write32 = b53_mdio_write32, + .write48 = b53_mdio_write48, + .write64 = b53_mdio_write64, + .phy_read16 = b53_mdio_phy_read16, + .phy_write16 = b53_mdio_phy_write16, +}; + +#define B53_BRCM_OUI_1 0x0143bc00 +#define B53_BRCM_OUI_2 0x03625c00 +#define B53_BRCM_OUI_3 0x00406000 +#define B53_BRCM_OUI_4 0x01410c00 +#define B53_BRCM_OUI_5 0xae025000 + +static int b53_mdio_probe(struct mdio_device *mdiodev) +{ + struct b53_device *dev; + u32 phy_id; + int ret; + + /* allow the generic PHY driver to take over the non-management MDIO + * addresses + */ + if (mdiodev->addr != BRCM_PSEUDO_PHY_ADDR && mdiodev->addr != 0) { + dev_err(&mdiodev->dev, "leaving address %d to PHY\n", + mdiodev->addr); + return -ENODEV; + } + + /* read the first port's id */ + phy_id = mdiobus_read(mdiodev->bus, 0, 2) << 16; + phy_id |= mdiobus_read(mdiodev->bus, 0, 3); + + /* BCM5325, BCM539x (OUI_1) + * BCM53125, BCM53128 (OUI_2) + * BCM5365 (OUI_3) + */ + if ((phy_id & 0xfffffc00) != B53_BRCM_OUI_1 && + (phy_id & 0xfffffc00) != B53_BRCM_OUI_2 && + (phy_id & 0xfffffc00) != B53_BRCM_OUI_3 && + (phy_id & 0xfffffc00) != B53_BRCM_OUI_4 && + (phy_id & 0xfffffc00) != B53_BRCM_OUI_5) { + dev_err(&mdiodev->dev, "Unsupported device: 0x%08x\n", phy_id); + return -ENODEV; + } + + /* First probe will come from SWITCH_MDIO controller on the 7445D0 + * switch, which will conflict with the 7445 integrated switch + * pseudo-phy (we end-up programming both). In that case, we return + * -EPROBE_DEFER for the first time we get here, and wait until we come + * back with the slave MDIO bus which has the correct indirection + * layer setup + */ + if (of_machine_is_compatible("brcm,bcm7445d0") && + strcmp(mdiodev->bus->name, "sf2 slave mii")) + return -EPROBE_DEFER; + + dev = b53_switch_alloc(&mdiodev->dev, &b53_mdio_ops, mdiodev->bus); + if (!dev) + return -ENOMEM; + + /* we don't use page 0xff, so force a page set */ + dev->current_page = 0xff; + dev->bus = mdiodev->bus; + + dev_set_drvdata(&mdiodev->dev, dev); + + ret = b53_switch_register(dev); + if (ret) { + dev_err(&mdiodev->dev, "failed to register switch: %i\n", ret); + return ret; + } + + return ret; +} + +static void b53_mdio_remove(struct mdio_device *mdiodev) +{ + struct b53_device *dev = dev_get_drvdata(&mdiodev->dev); + + if (!dev) + return; + + b53_switch_remove(dev); +} + +static void b53_mdio_shutdown(struct mdio_device *mdiodev) +{ + struct b53_device *dev = dev_get_drvdata(&mdiodev->dev); + + if (!dev) + return; + + b53_switch_shutdown(dev); + + dev_set_drvdata(&mdiodev->dev, NULL); +} + +static const struct of_device_id b53_of_match[] = { + { .compatible = "brcm,bcm5325" }, + { .compatible = "brcm,bcm53115" }, + { .compatible = "brcm,bcm53125" }, + { .compatible = "brcm,bcm53128" }, + { .compatible = "brcm,bcm53134" }, + { .compatible = "brcm,bcm5365" }, + { .compatible = "brcm,bcm5389" }, + { .compatible = "brcm,bcm5395" }, + { .compatible = "brcm,bcm5397" }, + { .compatible = "brcm,bcm5398" }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, b53_of_match); + +static struct mdio_driver b53_mdio_driver = { + .probe = b53_mdio_probe, + .remove = b53_mdio_remove, + .shutdown = b53_mdio_shutdown, + .mdiodrv.driver = { + .name = "bcm53xx", + .of_match_table = b53_of_match, + }, +}; +mdio_module_driver(b53_mdio_driver); + +MODULE_DESCRIPTION("B53 MDIO access driver"); +MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/net/dsa/b53/b53_mmap.c b/drivers/net/dsa/b53/b53_mmap.c new file mode 100644 index 0000000000..5e39641ea8 --- /dev/null +++ b/drivers/net/dsa/b53/b53_mmap.c @@ -0,0 +1,386 @@ +/* + * B53 register access through memory mapped registers + * + * Copyright (C) 2012-2013 Jonas Gorski <jogo@openwrt.org> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/bits.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/platform_data/b53.h> + +#include "b53_priv.h" + +struct b53_mmap_priv { + void __iomem *regs; +}; + +static int b53_mmap_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val) +{ + struct b53_mmap_priv *priv = dev->priv; + void __iomem *regs = priv->regs; + + *val = readb(regs + (page << 8) + reg); + + return 0; +} + +static int b53_mmap_read16(struct b53_device *dev, u8 page, u8 reg, u16 *val) +{ + struct b53_mmap_priv *priv = dev->priv; + void __iomem *regs = priv->regs; + + if (WARN_ON(reg % 2)) + return -EINVAL; + + if (dev->pdata && dev->pdata->big_endian) + *val = ioread16be(regs + (page << 8) + reg); + else + *val = readw(regs + (page << 8) + reg); + + return 0; +} + +static int b53_mmap_read32(struct b53_device *dev, u8 page, u8 reg, u32 *val) +{ + struct b53_mmap_priv *priv = dev->priv; + void __iomem *regs = priv->regs; + + if (WARN_ON(reg % 4)) + return -EINVAL; + + if (dev->pdata && dev->pdata->big_endian) + *val = ioread32be(regs + (page << 8) + reg); + else + *val = readl(regs + (page << 8) + reg); + + return 0; +} + +static int b53_mmap_read48(struct b53_device *dev, u8 page, u8 reg, u64 *val) +{ + struct b53_mmap_priv *priv = dev->priv; + void __iomem *regs = priv->regs; + + if (WARN_ON(reg % 2)) + return -EINVAL; + + if (reg % 4) { + u16 lo; + u32 hi; + + if (dev->pdata && dev->pdata->big_endian) { + lo = ioread16be(regs + (page << 8) + reg); + hi = ioread32be(regs + (page << 8) + reg + 2); + } else { + lo = readw(regs + (page << 8) + reg); + hi = readl(regs + (page << 8) + reg + 2); + } + + *val = ((u64)hi << 16) | lo; + } else { + u32 lo; + u16 hi; + + if (dev->pdata && dev->pdata->big_endian) { + lo = ioread32be(regs + (page << 8) + reg); + hi = ioread16be(regs + (page << 8) + reg + 4); + } else { + lo = readl(regs + (page << 8) + reg); + hi = readw(regs + (page << 8) + reg + 4); + } + + *val = ((u64)hi << 32) | lo; + } + + return 0; +} + +static int b53_mmap_read64(struct b53_device *dev, u8 page, u8 reg, u64 *val) +{ + struct b53_mmap_priv *priv = dev->priv; + void __iomem *regs = priv->regs; + u32 hi, lo; + + if (WARN_ON(reg % 4)) + return -EINVAL; + + if (dev->pdata && dev->pdata->big_endian) { + lo = ioread32be(regs + (page << 8) + reg); + hi = ioread32be(regs + (page << 8) + reg + 4); + } else { + lo = readl(regs + (page << 8) + reg); + hi = readl(regs + (page << 8) + reg + 4); + } + + *val = ((u64)hi << 32) | lo; + + return 0; +} + +static int b53_mmap_write8(struct b53_device *dev, u8 page, u8 reg, u8 value) +{ + struct b53_mmap_priv *priv = dev->priv; + void __iomem *regs = priv->regs; + + writeb(value, regs + (page << 8) + reg); + + return 0; +} + +static int b53_mmap_write16(struct b53_device *dev, u8 page, u8 reg, + u16 value) +{ + struct b53_mmap_priv *priv = dev->priv; + void __iomem *regs = priv->regs; + + if (WARN_ON(reg % 2)) + return -EINVAL; + + if (dev->pdata && dev->pdata->big_endian) + iowrite16be(value, regs + (page << 8) + reg); + else + writew(value, regs + (page << 8) + reg); + + return 0; +} + +static int b53_mmap_write32(struct b53_device *dev, u8 page, u8 reg, + u32 value) +{ + struct b53_mmap_priv *priv = dev->priv; + void __iomem *regs = priv->regs; + + if (WARN_ON(reg % 4)) + return -EINVAL; + + if (dev->pdata && dev->pdata->big_endian) + iowrite32be(value, regs + (page << 8) + reg); + else + writel(value, regs + (page << 8) + reg); + + return 0; +} + +static int b53_mmap_write48(struct b53_device *dev, u8 page, u8 reg, + u64 value) +{ + if (WARN_ON(reg % 2)) + return -EINVAL; + + if (reg % 4) { + u32 hi = (u32)(value >> 16); + u16 lo = (u16)value; + + b53_mmap_write16(dev, page, reg, lo); + b53_mmap_write32(dev, page, reg + 2, hi); + } else { + u16 hi = (u16)(value >> 32); + u32 lo = (u32)value; + + b53_mmap_write32(dev, page, reg, lo); + b53_mmap_write16(dev, page, reg + 4, hi); + } + + return 0; +} + +static int b53_mmap_write64(struct b53_device *dev, u8 page, u8 reg, + u64 value) +{ + u32 hi, lo; + + hi = upper_32_bits(value); + lo = lower_32_bits(value); + + if (WARN_ON(reg % 4)) + return -EINVAL; + + b53_mmap_write32(dev, page, reg, lo); + b53_mmap_write32(dev, page, reg + 4, hi); + + return 0; +} + +static int b53_mmap_phy_read16(struct b53_device *dev, int addr, int reg, + u16 *value) +{ + return -EIO; +} + +static int b53_mmap_phy_write16(struct b53_device *dev, int addr, int reg, + u16 value) +{ + return -EIO; +} + +static const struct b53_io_ops b53_mmap_ops = { + .read8 = b53_mmap_read8, + .read16 = b53_mmap_read16, + .read32 = b53_mmap_read32, + .read48 = b53_mmap_read48, + .read64 = b53_mmap_read64, + .write8 = b53_mmap_write8, + .write16 = b53_mmap_write16, + .write32 = b53_mmap_write32, + .write48 = b53_mmap_write48, + .write64 = b53_mmap_write64, + .phy_read16 = b53_mmap_phy_read16, + .phy_write16 = b53_mmap_phy_write16, +}; + +static int b53_mmap_probe_of(struct platform_device *pdev, + struct b53_platform_data **ppdata) +{ + struct device_node *np = pdev->dev.of_node; + struct device_node *of_ports, *of_port; + struct device *dev = &pdev->dev; + struct b53_platform_data *pdata; + void __iomem *mem; + + mem = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(mem)) + return PTR_ERR(mem); + + pdata = devm_kzalloc(dev, sizeof(struct b53_platform_data), + GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + pdata->regs = mem; + pdata->chip_id = (u32)(unsigned long)device_get_match_data(dev); + pdata->big_endian = of_property_read_bool(np, "big-endian"); + + of_ports = of_get_child_by_name(np, "ports"); + if (!of_ports) { + dev_err(dev, "no ports child node found\n"); + return -EINVAL; + } + + for_each_available_child_of_node(of_ports, of_port) { + u32 reg; + + if (of_property_read_u32(of_port, "reg", ®)) + continue; + + if (reg < B53_N_PORTS) + pdata->enabled_ports |= BIT(reg); + } + + of_node_put(of_ports); + *ppdata = pdata; + + return 0; +} + +static int b53_mmap_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct b53_platform_data *pdata = pdev->dev.platform_data; + struct b53_mmap_priv *priv; + struct b53_device *dev; + int ret; + + if (!pdata && np) { + ret = b53_mmap_probe_of(pdev, &pdata); + if (ret) { + dev_err(&pdev->dev, "OF probe error\n"); + return ret; + } + } + + if (!pdata) + return -EINVAL; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->regs = pdata->regs; + + dev = b53_switch_alloc(&pdev->dev, &b53_mmap_ops, priv); + if (!dev) + return -ENOMEM; + + dev->pdata = pdata; + + platform_set_drvdata(pdev, dev); + + return b53_switch_register(dev); +} + +static int b53_mmap_remove(struct platform_device *pdev) +{ + struct b53_device *dev = platform_get_drvdata(pdev); + + if (dev) + b53_switch_remove(dev); + + return 0; +} + +static void b53_mmap_shutdown(struct platform_device *pdev) +{ + struct b53_device *dev = platform_get_drvdata(pdev); + + if (dev) + b53_switch_shutdown(dev); + + platform_set_drvdata(pdev, NULL); +} + +static const struct of_device_id b53_mmap_of_table[] = { + { + .compatible = "brcm,bcm3384-switch", + .data = (void *)BCM63XX_DEVICE_ID, + }, { + .compatible = "brcm,bcm6318-switch", + .data = (void *)BCM63268_DEVICE_ID, + }, { + .compatible = "brcm,bcm6328-switch", + .data = (void *)BCM63XX_DEVICE_ID, + }, { + .compatible = "brcm,bcm6362-switch", + .data = (void *)BCM63XX_DEVICE_ID, + }, { + .compatible = "brcm,bcm6368-switch", + .data = (void *)BCM63XX_DEVICE_ID, + }, { + .compatible = "brcm,bcm63268-switch", + .data = (void *)BCM63268_DEVICE_ID, + }, { + .compatible = "brcm,bcm63xx-switch", + .data = (void *)BCM63XX_DEVICE_ID, + }, { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, b53_mmap_of_table); + +static struct platform_driver b53_mmap_driver = { + .probe = b53_mmap_probe, + .remove = b53_mmap_remove, + .shutdown = b53_mmap_shutdown, + .driver = { + .name = "b53-switch", + .of_match_table = b53_mmap_of_table, + }, +}; + +module_platform_driver(b53_mmap_driver); +MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>"); +MODULE_DESCRIPTION("B53 MMAP access driver"); +MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h new file mode 100644 index 0000000000..fdcfd5081c --- /dev/null +++ b/drivers/net/dsa/b53/b53_priv.h @@ -0,0 +1,403 @@ +/* + * B53 common definitions + * + * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef __B53_PRIV_H +#define __B53_PRIV_H + +#include <linux/kernel.h> +#include <linux/mutex.h> +#include <linux/phylink.h> +#include <linux/etherdevice.h> +#include <net/dsa.h> + +#include "b53_regs.h" + +struct b53_device; +struct net_device; + +struct b53_io_ops { + int (*read8)(struct b53_device *dev, u8 page, u8 reg, u8 *value); + int (*read16)(struct b53_device *dev, u8 page, u8 reg, u16 *value); + int (*read32)(struct b53_device *dev, u8 page, u8 reg, u32 *value); + int (*read48)(struct b53_device *dev, u8 page, u8 reg, u64 *value); + int (*read64)(struct b53_device *dev, u8 page, u8 reg, u64 *value); + int (*write8)(struct b53_device *dev, u8 page, u8 reg, u8 value); + int (*write16)(struct b53_device *dev, u8 page, u8 reg, u16 value); + int (*write32)(struct b53_device *dev, u8 page, u8 reg, u32 value); + int (*write48)(struct b53_device *dev, u8 page, u8 reg, u64 value); + int (*write64)(struct b53_device *dev, u8 page, u8 reg, u64 value); + int (*phy_read16)(struct b53_device *dev, int addr, int reg, u16 *value); + int (*phy_write16)(struct b53_device *dev, int addr, int reg, u16 value); + int (*irq_enable)(struct b53_device *dev, int port); + void (*irq_disable)(struct b53_device *dev, int port); + void (*phylink_get_caps)(struct b53_device *dev, int port, + struct phylink_config *config); + struct phylink_pcs *(*phylink_mac_select_pcs)(struct b53_device *dev, + int port, + phy_interface_t interface); + u8 (*serdes_map_lane)(struct b53_device *dev, int port); + void (*serdes_link_set)(struct b53_device *dev, int port, + unsigned int mode, phy_interface_t interface, + bool link_up); +}; + +#define B53_INVALID_LANE 0xff + +enum { + BCM4908_DEVICE_ID = 0x4908, + BCM5325_DEVICE_ID = 0x25, + BCM5365_DEVICE_ID = 0x65, + BCM5389_DEVICE_ID = 0x89, + BCM5395_DEVICE_ID = 0x95, + BCM5397_DEVICE_ID = 0x97, + BCM5398_DEVICE_ID = 0x98, + BCM53115_DEVICE_ID = 0x53115, + BCM53125_DEVICE_ID = 0x53125, + BCM53128_DEVICE_ID = 0x53128, + BCM63XX_DEVICE_ID = 0x6300, + BCM63268_DEVICE_ID = 0x63268, + BCM53010_DEVICE_ID = 0x53010, + BCM53011_DEVICE_ID = 0x53011, + BCM53012_DEVICE_ID = 0x53012, + BCM53018_DEVICE_ID = 0x53018, + BCM53019_DEVICE_ID = 0x53019, + BCM58XX_DEVICE_ID = 0x5800, + BCM583XX_DEVICE_ID = 0x58300, + BCM7445_DEVICE_ID = 0x7445, + BCM7278_DEVICE_ID = 0x7278, + BCM53134_DEVICE_ID = 0x5075, +}; + +struct b53_pcs { + struct phylink_pcs pcs; + struct b53_device *dev; + u8 lane; +}; + +#define B53_N_PORTS 9 +#define B53_N_PORTS_25 6 +#define B53_N_PCS 2 + +struct b53_port { + u16 vlan_ctl_mask; + struct ethtool_eee eee; +}; + +struct b53_vlan { + u16 members; + u16 untag; + bool valid; +}; + +struct b53_device { + struct dsa_switch *ds; + struct b53_platform_data *pdata; + const char *name; + + struct mutex reg_mutex; + struct mutex stats_mutex; + struct mutex arl_mutex; + const struct b53_io_ops *ops; + + /* chip specific data */ + u32 chip_id; + u8 core_rev; + u8 vta_regs[3]; + u8 duplex_reg; + u8 jumbo_pm_reg; + u8 jumbo_size_reg; + int reset_gpio; + u8 num_arl_bins; + u16 num_arl_buckets; + enum dsa_tag_protocol tag_protocol; + + /* used ports mask */ + u16 enabled_ports; + unsigned int imp_port; + + /* connect specific data */ + u8 current_page; + struct device *dev; + u8 serdes_lane; + + /* Master MDIO bus we got probed from */ + struct mii_bus *bus; + + void *priv; + + /* run time configuration */ + bool enable_jumbo; + + unsigned int num_vlans; + struct b53_vlan *vlans; + bool vlan_enabled; + unsigned int num_ports; + struct b53_port *ports; + + struct b53_pcs pcs[B53_N_PCS]; +}; + +#define b53_for_each_port(dev, i) \ + for (i = 0; i < B53_N_PORTS; i++) \ + if (dev->enabled_ports & BIT(i)) + + +static inline int is5325(struct b53_device *dev) +{ + return dev->chip_id == BCM5325_DEVICE_ID; +} + +static inline int is5365(struct b53_device *dev) +{ +#ifdef CONFIG_BCM47XX + return dev->chip_id == BCM5365_DEVICE_ID; +#else + return 0; +#endif +} + +static inline int is5397_98(struct b53_device *dev) +{ + return dev->chip_id == BCM5397_DEVICE_ID || + dev->chip_id == BCM5398_DEVICE_ID; +} + +static inline int is539x(struct b53_device *dev) +{ + return dev->chip_id == BCM5395_DEVICE_ID || + dev->chip_id == BCM5397_DEVICE_ID || + dev->chip_id == BCM5398_DEVICE_ID; +} + +static inline int is531x5(struct b53_device *dev) +{ + return dev->chip_id == BCM53115_DEVICE_ID || + dev->chip_id == BCM53125_DEVICE_ID || + dev->chip_id == BCM53128_DEVICE_ID || + dev->chip_id == BCM53134_DEVICE_ID; +} + +static inline int is63xx(struct b53_device *dev) +{ + return dev->chip_id == BCM63XX_DEVICE_ID || + dev->chip_id == BCM63268_DEVICE_ID; +} + +static inline int is63268(struct b53_device *dev) +{ + return dev->chip_id == BCM63268_DEVICE_ID; +} + +static inline int is5301x(struct b53_device *dev) +{ + return dev->chip_id == BCM53010_DEVICE_ID || + dev->chip_id == BCM53011_DEVICE_ID || + dev->chip_id == BCM53012_DEVICE_ID || + dev->chip_id == BCM53018_DEVICE_ID || + dev->chip_id == BCM53019_DEVICE_ID; +} + +static inline int is58xx(struct b53_device *dev) +{ + return dev->chip_id == BCM58XX_DEVICE_ID || + dev->chip_id == BCM583XX_DEVICE_ID || + dev->chip_id == BCM7445_DEVICE_ID || + dev->chip_id == BCM7278_DEVICE_ID || + dev->chip_id == BCM53134_DEVICE_ID; +} + +#define B53_63XX_RGMII0 4 +#define B53_CPU_PORT_25 5 +#define B53_CPU_PORT 8 + +static inline unsigned int b53_max_arl_entries(struct b53_device *dev) +{ + return dev->num_arl_buckets * dev->num_arl_bins; +} + +struct b53_device *b53_switch_alloc(struct device *base, + const struct b53_io_ops *ops, + void *priv); + +int b53_switch_detect(struct b53_device *dev); + +int b53_switch_register(struct b53_device *dev); + +static inline void b53_switch_remove(struct b53_device *dev) +{ + dsa_unregister_switch(dev->ds); +} + +static inline void b53_switch_shutdown(struct b53_device *dev) +{ + dsa_switch_shutdown(dev->ds); +} + +#define b53_build_op(type_op_size, val_type) \ +static inline int b53_##type_op_size(struct b53_device *dev, u8 page, \ + u8 reg, val_type val) \ +{ \ + int ret; \ + \ + mutex_lock(&dev->reg_mutex); \ + ret = dev->ops->type_op_size(dev, page, reg, val); \ + mutex_unlock(&dev->reg_mutex); \ + \ + return ret; \ +} + +b53_build_op(read8, u8 *); +b53_build_op(read16, u16 *); +b53_build_op(read32, u32 *); +b53_build_op(read48, u64 *); +b53_build_op(read64, u64 *); + +b53_build_op(write8, u8); +b53_build_op(write16, u16); +b53_build_op(write32, u32); +b53_build_op(write48, u64); +b53_build_op(write64, u64); + +struct b53_arl_entry { + u16 port; + u8 mac[ETH_ALEN]; + u16 vid; + u8 is_valid:1; + u8 is_age:1; + u8 is_static:1; +}; + +static inline void b53_arl_to_entry(struct b53_arl_entry *ent, + u64 mac_vid, u32 fwd_entry) +{ + memset(ent, 0, sizeof(*ent)); + ent->port = fwd_entry & ARLTBL_DATA_PORT_ID_MASK; + ent->is_valid = !!(fwd_entry & ARLTBL_VALID); + ent->is_age = !!(fwd_entry & ARLTBL_AGE); + ent->is_static = !!(fwd_entry & ARLTBL_STATIC); + u64_to_ether_addr(mac_vid, ent->mac); + ent->vid = mac_vid >> ARLTBL_VID_S; +} + +static inline void b53_arl_from_entry(u64 *mac_vid, u32 *fwd_entry, + const struct b53_arl_entry *ent) +{ + *mac_vid = ether_addr_to_u64(ent->mac); + *mac_vid |= (u64)(ent->vid & ARLTBL_VID_MASK) << ARLTBL_VID_S; + *fwd_entry = ent->port & ARLTBL_DATA_PORT_ID_MASK; + if (ent->is_valid) + *fwd_entry |= ARLTBL_VALID; + if (ent->is_static) + *fwd_entry |= ARLTBL_STATIC; + if (ent->is_age) + *fwd_entry |= ARLTBL_AGE; +} + +#ifdef CONFIG_BCM47XX + +#include <linux/bcm47xx_nvram.h> +#include <bcm47xx_board.h> +static inline int b53_switch_get_reset_gpio(struct b53_device *dev) +{ + enum bcm47xx_board board = bcm47xx_board_get(); + + switch (board) { + case BCM47XX_BOARD_LINKSYS_WRT300NV11: + case BCM47XX_BOARD_LINKSYS_WRT310NV1: + return 8; + default: + return bcm47xx_nvram_gpio_pin("robo_reset"); + } +} +#else +static inline int b53_switch_get_reset_gpio(struct b53_device *dev) +{ + return -ENOENT; +} +#endif + +/* Exported functions towards other drivers */ +void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port); +int b53_configure_vlan(struct dsa_switch *ds); +void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset, + uint8_t *data); +void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data); +int b53_get_sset_count(struct dsa_switch *ds, int port, int sset); +void b53_get_ethtool_phy_stats(struct dsa_switch *ds, int port, uint64_t *data); +int b53_br_join(struct dsa_switch *ds, int port, struct dsa_bridge bridge, + bool *tx_fwd_offload, struct netlink_ext_ack *extack); +void b53_br_leave(struct dsa_switch *ds, int port, struct dsa_bridge bridge); +void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state); +void b53_br_fast_age(struct dsa_switch *ds, int port); +int b53_br_flags_pre(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack); +int b53_br_flags(struct dsa_switch *ds, int port, + struct switchdev_brport_flags flags, + struct netlink_ext_ack *extack); +int b53_setup_devlink_resources(struct dsa_switch *ds); +void b53_port_event(struct dsa_switch *ds, int port); +void b53_phylink_mac_config(struct dsa_switch *ds, int port, + unsigned int mode, + const struct phylink_link_state *state); +void b53_phylink_mac_link_down(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface); +void b53_phylink_mac_link_up(struct dsa_switch *ds, int port, + unsigned int mode, + phy_interface_t interface, + struct phy_device *phydev, + int speed, int duplex, + bool tx_pause, bool rx_pause); +int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering, + struct netlink_ext_ack *extack); +int b53_vlan_add(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan, + struct netlink_ext_ack *extack); +int b53_vlan_del(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_vlan *vlan); +int b53_fdb_add(struct dsa_switch *ds, int port, + const unsigned char *addr, u16 vid, + struct dsa_db db); +int b53_fdb_del(struct dsa_switch *ds, int port, + const unsigned char *addr, u16 vid, + struct dsa_db db); +int b53_fdb_dump(struct dsa_switch *ds, int port, + dsa_fdb_dump_cb_t *cb, void *data); +int b53_mdb_add(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_mdb *mdb, + struct dsa_db db); +int b53_mdb_del(struct dsa_switch *ds, int port, + const struct switchdev_obj_port_mdb *mdb, + struct dsa_db db); +int b53_mirror_add(struct dsa_switch *ds, int port, + struct dsa_mall_mirror_tc_entry *mirror, bool ingress, + struct netlink_ext_ack *extack); +enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port, + enum dsa_tag_protocol mprot); +void b53_mirror_del(struct dsa_switch *ds, int port, + struct dsa_mall_mirror_tc_entry *mirror); +int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy); +void b53_disable_port(struct dsa_switch *ds, int port); +void b53_brcm_hdr_setup(struct dsa_switch *ds, int port); +void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable); +int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy); +int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e); +int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e); + +#endif diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h new file mode 100644 index 0000000000..bfbcb66bef --- /dev/null +++ b/drivers/net/dsa/b53/b53_regs.h @@ -0,0 +1,528 @@ +/* + * B53 register definitions + * + * Copyright (C) 2004 Broadcom Corporation + * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef __B53_REGS_H +#define __B53_REGS_H + +/* Management Port (SMP) Page offsets */ +#define B53_CTRL_PAGE 0x00 /* Control */ +#define B53_STAT_PAGE 0x01 /* Status */ +#define B53_MGMT_PAGE 0x02 /* Management Mode */ +#define B53_MIB_AC_PAGE 0x03 /* MIB Autocast */ +#define B53_ARLCTRL_PAGE 0x04 /* ARL Control */ +#define B53_ARLIO_PAGE 0x05 /* ARL Access */ +#define B53_FRAMEBUF_PAGE 0x06 /* Management frame access */ +#define B53_MEM_ACCESS_PAGE 0x08 /* Memory access */ + +/* PHY Registers */ +#define B53_PORT_MII_PAGE(i) (0x10 + (i)) /* Port i MII Registers */ +#define B53_IM_PORT_PAGE 0x18 /* Inverse MII Port (to EMAC) */ +#define B53_ALL_PORT_PAGE 0x19 /* All ports MII (broadcast) */ + +/* MIB registers */ +#define B53_MIB_PAGE(i) (0x20 + (i)) + +/* Quality of Service (QoS) Registers */ +#define B53_QOS_PAGE 0x30 + +/* Port VLAN Page */ +#define B53_PVLAN_PAGE 0x31 + +/* VLAN Registers */ +#define B53_VLAN_PAGE 0x34 + +/* Jumbo Frame Registers */ +#define B53_JUMBO_PAGE 0x40 + +/* EEE Control Registers Page */ +#define B53_EEE_PAGE 0x92 + +/* CFP Configuration Registers Page */ +#define B53_CFP_PAGE 0xa1 + +/************************************************************************* + * Control Page registers + *************************************************************************/ + +/* Port Control Register (8 bit) */ +#define B53_PORT_CTRL(i) (0x00 + (i)) +#define PORT_CTRL_RX_DISABLE BIT(0) +#define PORT_CTRL_TX_DISABLE BIT(1) +#define PORT_CTRL_RX_BCST_EN BIT(2) /* Broadcast RX (P8 only) */ +#define PORT_CTRL_RX_MCST_EN BIT(3) /* Multicast RX (P8 only) */ +#define PORT_CTRL_RX_UCST_EN BIT(4) /* Unicast RX (P8 only) */ +#define PORT_CTRL_STP_STATE_S 5 +#define PORT_CTRL_NO_STP (0 << PORT_CTRL_STP_STATE_S) +#define PORT_CTRL_DIS_STATE (1 << PORT_CTRL_STP_STATE_S) +#define PORT_CTRL_BLOCK_STATE (2 << PORT_CTRL_STP_STATE_S) +#define PORT_CTRL_LISTEN_STATE (3 << PORT_CTRL_STP_STATE_S) +#define PORT_CTRL_LEARN_STATE (4 << PORT_CTRL_STP_STATE_S) +#define PORT_CTRL_FWD_STATE (5 << PORT_CTRL_STP_STATE_S) +#define PORT_CTRL_STP_STATE_MASK (0x7 << PORT_CTRL_STP_STATE_S) + +/* SMP Control Register (8 bit) */ +#define B53_SMP_CTRL 0x0a + +/* Switch Mode Control Register (8 bit) */ +#define B53_SWITCH_MODE 0x0b +#define SM_SW_FWD_MODE BIT(0) /* 1 = Managed Mode */ +#define SM_SW_FWD_EN BIT(1) /* Forwarding Enable */ + +/* IMP Port state override register (8 bit) */ +#define B53_PORT_OVERRIDE_CTRL 0x0e +#define PORT_OVERRIDE_LINK BIT(0) +#define PORT_OVERRIDE_FULL_DUPLEX BIT(1) /* 0 = Half Duplex */ +#define PORT_OVERRIDE_SPEED_S 2 +#define PORT_OVERRIDE_SPEED_10M (0 << PORT_OVERRIDE_SPEED_S) +#define PORT_OVERRIDE_SPEED_100M (1 << PORT_OVERRIDE_SPEED_S) +#define PORT_OVERRIDE_SPEED_1000M (2 << PORT_OVERRIDE_SPEED_S) +#define PORT_OVERRIDE_RV_MII_25 BIT(4) /* BCM5325 only */ +#define PORT_OVERRIDE_RX_FLOW BIT(4) +#define PORT_OVERRIDE_TX_FLOW BIT(5) +#define PORT_OVERRIDE_SPEED_2000M BIT(6) /* BCM5301X only, requires setting 1000M */ +#define PORT_OVERRIDE_EN BIT(7) /* Use the register contents */ + +/* Power-down mode control */ +#define B53_PD_MODE_CTRL_25 0x0f + +/* IP Multicast control (8 bit) */ +#define B53_IP_MULTICAST_CTRL 0x21 +#define B53_IPMC_FWD_EN BIT(1) +#define B53_UC_FWD_EN BIT(6) +#define B53_MC_FWD_EN BIT(7) + +/* Switch control (8 bit) */ +#define B53_SWITCH_CTRL 0x22 +#define B53_MII_DUMB_FWDG_EN BIT(6) + +/* (16 bit) */ +#define B53_UC_FLOOD_MASK 0x32 +#define B53_MC_FLOOD_MASK 0x34 +#define B53_IPMC_FLOOD_MASK 0x36 +#define B53_DIS_LEARNING 0x3c + +/* + * Override Ports 0-7 State on devices with xMII interfaces (8 bit) + * + * For port 8 still use B53_PORT_OVERRIDE_CTRL + * Please note that not all ports are available on every hardware, e.g. BCM5301X + * don't include overriding port 6, BCM63xx also have some limitations. + */ +#define B53_GMII_PORT_OVERRIDE_CTRL(i) (0x58 + (i)) +#define GMII_PO_LINK BIT(0) +#define GMII_PO_FULL_DUPLEX BIT(1) /* 0 = Half Duplex */ +#define GMII_PO_SPEED_S 2 +#define GMII_PO_SPEED_10M (0 << GMII_PO_SPEED_S) +#define GMII_PO_SPEED_100M (1 << GMII_PO_SPEED_S) +#define GMII_PO_SPEED_1000M (2 << GMII_PO_SPEED_S) +#define GMII_PO_RX_FLOW BIT(4) +#define GMII_PO_TX_FLOW BIT(5) +#define GMII_PO_EN BIT(6) /* Use the register contents */ +#define GMII_PO_SPEED_2000M BIT(7) /* BCM5301X only, requires setting 1000M */ + +#define B53_RGMII_CTRL_IMP 0x60 +#define RGMII_CTRL_ENABLE_GMII BIT(7) +#define RGMII_CTRL_MII_OVERRIDE BIT(6) +#define RGMII_CTRL_TIMING_SEL BIT(2) +#define RGMII_CTRL_DLL_RXC BIT(1) +#define RGMII_CTRL_DLL_TXC BIT(0) + +#define B53_RGMII_CTRL_P(i) (B53_RGMII_CTRL_IMP + (i)) + +/* Software reset register (8 bit) */ +#define B53_SOFTRESET 0x79 +#define SW_RST BIT(7) +#define EN_CH_RST BIT(6) +#define EN_SW_RST BIT(4) + +/* Fast Aging Control register (8 bit) */ +#define B53_FAST_AGE_CTRL 0x88 +#define FAST_AGE_STATIC BIT(0) +#define FAST_AGE_DYNAMIC BIT(1) +#define FAST_AGE_PORT BIT(2) +#define FAST_AGE_VLAN BIT(3) +#define FAST_AGE_STP BIT(4) +#define FAST_AGE_MC BIT(5) +#define FAST_AGE_DONE BIT(7) + +/* Fast Aging Port Control register (8 bit) */ +#define B53_FAST_AGE_PORT_CTRL 0x89 + +/* Fast Aging VID Control register (16 bit) */ +#define B53_FAST_AGE_VID_CTRL 0x8a + +/************************************************************************* + * Status Page registers + *************************************************************************/ + +/* Link Status Summary Register (16bit) */ +#define B53_LINK_STAT 0x00 + +/* Link Status Change Register (16 bit) */ +#define B53_LINK_STAT_CHANGE 0x02 + +/* Port Speed Summary Register (16 bit for FE, 32 bit for GE) */ +#define B53_SPEED_STAT 0x04 +#define SPEED_PORT_FE(reg, port) (((reg) >> (port)) & 1) +#define SPEED_PORT_GE(reg, port) (((reg) >> 2 * (port)) & 3) +#define SPEED_STAT_10M 0 +#define SPEED_STAT_100M 1 +#define SPEED_STAT_1000M 2 + +/* Duplex Status Summary (16 bit) */ +#define B53_DUPLEX_STAT_FE 0x06 +#define B53_DUPLEX_STAT_GE 0x08 +#define B53_DUPLEX_STAT_63XX 0x0c + +/* Revision ID register for BCM5325 */ +#define B53_REV_ID_25 0x50 + +/* Strap Value (48 bit) */ +#define B53_STRAP_VALUE 0x70 +#define SV_GMII_CTRL_115 BIT(27) + +/************************************************************************* + * Management Mode Page Registers + *************************************************************************/ + +/* Global Management Config Register (8 bit) */ +#define B53_GLOBAL_CONFIG 0x00 +#define GC_RESET_MIB 0x01 +#define GC_RX_BPDU_EN 0x02 +#define GC_MIB_AC_HDR_EN 0x10 +#define GC_MIB_AC_EN 0x20 +#define GC_FRM_MGMT_PORT_M 0xC0 +#define GC_FRM_MGMT_PORT_04 0x00 +#define GC_FRM_MGMT_PORT_MII 0x80 + +/* Broadcom Header control register (8 bit) */ +#define B53_BRCM_HDR 0x03 +#define BRCM_HDR_P8_EN BIT(0) /* Enable tagging on port 8 */ +#define BRCM_HDR_P5_EN BIT(1) /* Enable tagging on port 5 */ +#define BRCM_HDR_P7_EN BIT(2) /* Enable tagging on port 7 */ + +/* Mirror capture control register (16 bit) */ +#define B53_MIR_CAP_CTL 0x10 +#define CAP_PORT_MASK 0xf +#define BLK_NOT_MIR BIT(14) +#define MIRROR_EN BIT(15) + +/* Ingress mirror control register (16 bit) */ +#define B53_IG_MIR_CTL 0x12 +#define MIRROR_MASK 0x1ff +#define DIV_EN BIT(13) +#define MIRROR_FILTER_MASK 0x3 +#define MIRROR_FILTER_SHIFT 14 +#define MIRROR_ALL 0 +#define MIRROR_DA 1 +#define MIRROR_SA 2 + +/* Ingress mirror divider register (16 bit) */ +#define B53_IG_MIR_DIV 0x14 +#define IN_MIRROR_DIV_MASK 0x3ff + +/* Ingress mirror MAC address register (48 bit) */ +#define B53_IG_MIR_MAC 0x16 + +/* Egress mirror control register (16 bit) */ +#define B53_EG_MIR_CTL 0x1C + +/* Egress mirror divider register (16 bit) */ +#define B53_EG_MIR_DIV 0x1E + +/* Egress mirror MAC address register (48 bit) */ +#define B53_EG_MIR_MAC 0x20 + +/* Device ID register (8 or 32 bit) */ +#define B53_DEVICE_ID 0x30 + +/* Revision ID register (8 bit) */ +#define B53_REV_ID 0x40 + +/* Broadcom header RX control (16 bit) */ +#define B53_BRCM_HDR_RX_DIS 0x60 + +/* Broadcom header TX control (16 bit) */ +#define B53_BRCM_HDR_TX_DIS 0x62 + +/************************************************************************* + * ARL Access Page Registers + *************************************************************************/ + +/* VLAN Table Access Register (8 bit) */ +#define B53_VT_ACCESS 0x80 +#define B53_VT_ACCESS_9798 0x60 /* for BCM5397/BCM5398 */ +#define B53_VT_ACCESS_63XX 0x60 /* for BCM6328/62/68 */ +#define VTA_CMD_WRITE 0 +#define VTA_CMD_READ 1 +#define VTA_CMD_CLEAR 2 +#define VTA_START_CMD BIT(7) + +/* VLAN Table Index Register (16 bit) */ +#define B53_VT_INDEX 0x81 +#define B53_VT_INDEX_9798 0x61 +#define B53_VT_INDEX_63XX 0x62 + +/* VLAN Table Entry Register (32 bit) */ +#define B53_VT_ENTRY 0x83 +#define B53_VT_ENTRY_9798 0x63 +#define B53_VT_ENTRY_63XX 0x64 +#define VTE_MEMBERS 0x1ff +#define VTE_UNTAG_S 9 +#define VTE_UNTAG (0x1ff << 9) + +/************************************************************************* + * ARL I/O Registers + *************************************************************************/ + +/* ARL Table Read/Write Register (8 bit) */ +#define B53_ARLTBL_RW_CTRL 0x00 +#define ARLTBL_RW BIT(0) +#define ARLTBL_IVL_SVL_SELECT BIT(6) +#define ARLTBL_START_DONE BIT(7) + +/* MAC Address Index Register (48 bit) */ +#define B53_MAC_ADDR_IDX 0x02 + +/* VLAN ID Index Register (16 bit) */ +#define B53_VLAN_ID_IDX 0x08 + +/* ARL Table MAC/VID Entry N Registers (64 bit) + * + * BCM5325 and BCM5365 share most definitions below + */ +#define B53_ARLTBL_MAC_VID_ENTRY(n) ((0x10 * (n)) + 0x10) +#define ARLTBL_MAC_MASK 0xffffffffffffULL +#define ARLTBL_VID_S 48 +#define ARLTBL_VID_MASK_25 0xff +#define ARLTBL_VID_MASK 0xfff +#define ARLTBL_DATA_PORT_ID_S_25 48 +#define ARLTBL_DATA_PORT_ID_MASK_25 0xf +#define ARLTBL_AGE_25 BIT(61) +#define ARLTBL_STATIC_25 BIT(62) +#define ARLTBL_VALID_25 BIT(63) + +/* ARL Table Data Entry N Registers (32 bit) */ +#define B53_ARLTBL_DATA_ENTRY(n) ((0x10 * (n)) + 0x18) +#define ARLTBL_DATA_PORT_ID_MASK 0x1ff +#define ARLTBL_TC(tc) ((3 & tc) << 11) +#define ARLTBL_AGE BIT(14) +#define ARLTBL_STATIC BIT(15) +#define ARLTBL_VALID BIT(16) + +/* Maximum number of bin entries in the ARL for all switches */ +#define B53_ARLTBL_MAX_BIN_ENTRIES 4 + +/* ARL Search Control Register (8 bit) */ +#define B53_ARL_SRCH_CTL 0x50 +#define B53_ARL_SRCH_CTL_25 0x20 +#define ARL_SRCH_VLID BIT(0) +#define ARL_SRCH_STDN BIT(7) + +/* ARL Search Address Register (16 bit) */ +#define B53_ARL_SRCH_ADDR 0x51 +#define B53_ARL_SRCH_ADDR_25 0x22 +#define B53_ARL_SRCH_ADDR_65 0x24 +#define ARL_ADDR_MASK GENMASK(14, 0) + +/* ARL Search MAC/VID Result (64 bit) */ +#define B53_ARL_SRCH_RSTL_0_MACVID 0x60 + +/* Single register search result on 5325 */ +#define B53_ARL_SRCH_RSTL_0_MACVID_25 0x24 +/* Single register search result on 5365 */ +#define B53_ARL_SRCH_RSTL_0_MACVID_65 0x30 + +/* ARL Search Data Result (32 bit) */ +#define B53_ARL_SRCH_RSTL_0 0x68 + +#define B53_ARL_SRCH_RSTL_MACVID(x) (B53_ARL_SRCH_RSTL_0_MACVID + ((x) * 0x10)) +#define B53_ARL_SRCH_RSTL(x) (B53_ARL_SRCH_RSTL_0 + ((x) * 0x10)) + +/************************************************************************* + * Port VLAN Registers + *************************************************************************/ + +/* Port VLAN mask (16 bit) IMP port is always 8, also on 5325 & co */ +#define B53_PVLAN_PORT_MASK(i) ((i) * 2) + +/* Join all VLANs register (16 bit) */ +#define B53_JOIN_ALL_VLAN_EN 0x50 + +/************************************************************************* + * 802.1Q Page Registers + *************************************************************************/ + +/* Global QoS Control (8 bit) */ +#define B53_QOS_GLOBAL_CTL 0x00 + +/* Enable 802.1Q for individual Ports (16 bit) */ +#define B53_802_1P_EN 0x04 + +/************************************************************************* + * VLAN Page Registers + *************************************************************************/ + +/* VLAN Control 0 (8 bit) */ +#define B53_VLAN_CTRL0 0x00 +#define VC0_8021PF_CTRL_MASK 0x3 +#define VC0_8021PF_CTRL_NONE 0x0 +#define VC0_8021PF_CTRL_CHANGE_PRI 0x1 +#define VC0_8021PF_CTRL_CHANGE_VID 0x2 +#define VC0_8021PF_CTRL_CHANGE_BOTH 0x3 +#define VC0_8021QF_CTRL_MASK 0xc +#define VC0_8021QF_CTRL_CHANGE_PRI 0x1 +#define VC0_8021QF_CTRL_CHANGE_VID 0x2 +#define VC0_8021QF_CTRL_CHANGE_BOTH 0x3 +#define VC0_RESERVED_1 BIT(1) +#define VC0_DROP_VID_MISS BIT(4) +#define VC0_VID_HASH_VID BIT(5) +#define VC0_VID_CHK_EN BIT(6) /* Use VID,DA or VID,SA */ +#define VC0_VLAN_EN BIT(7) /* 802.1Q VLAN Enabled */ + +/* VLAN Control 1 (8 bit) */ +#define B53_VLAN_CTRL1 0x01 +#define VC1_RX_MCST_TAG_EN BIT(1) +#define VC1_RX_MCST_FWD_EN BIT(2) +#define VC1_RX_MCST_UNTAG_EN BIT(3) + +/* VLAN Control 2 (8 bit) */ +#define B53_VLAN_CTRL2 0x02 + +/* VLAN Control 3 (8 bit when BCM5325, 16 bit else) */ +#define B53_VLAN_CTRL3 0x03 +#define B53_VLAN_CTRL3_63XX 0x04 +#define VC3_MAXSIZE_1532 BIT(6) /* 5325 only */ +#define VC3_HIGH_8BIT_EN BIT(7) /* 5325 only */ + +/* VLAN Control 4 (8 bit) */ +#define B53_VLAN_CTRL4 0x05 +#define B53_VLAN_CTRL4_25 0x04 +#define B53_VLAN_CTRL4_63XX 0x06 +#define VC4_ING_VID_CHECK_S 6 +#define VC4_ING_VID_CHECK_MASK (0x3 << VC4_ING_VID_CHECK_S) +#define VC4_ING_VID_VIO_FWD 0 /* forward, but do not learn */ +#define VC4_ING_VID_VIO_DROP 1 /* drop VID violations */ +#define VC4_NO_ING_VID_CHK 2 /* do not check */ +#define VC4_ING_VID_VIO_TO_IMP 3 /* redirect to MII port */ + +/* VLAN Control 5 (8 bit) */ +#define B53_VLAN_CTRL5 0x06 +#define B53_VLAN_CTRL5_25 0x05 +#define B53_VLAN_CTRL5_63XX 0x07 +#define VC5_VID_FFF_EN BIT(2) +#define VC5_DROP_VTABLE_MISS BIT(3) + +/* VLAN Control 6 (8 bit) */ +#define B53_VLAN_CTRL6 0x07 +#define B53_VLAN_CTRL6_63XX 0x08 + +/* VLAN Table Access Register (16 bit) */ +#define B53_VLAN_TABLE_ACCESS_25 0x06 /* BCM5325E/5350 */ +#define B53_VLAN_TABLE_ACCESS_65 0x08 /* BCM5365 */ +#define VTA_VID_LOW_MASK_25 0xf +#define VTA_VID_LOW_MASK_65 0xff +#define VTA_VID_HIGH_S_25 4 +#define VTA_VID_HIGH_S_65 8 +#define VTA_VID_HIGH_MASK_25 (0xff << VTA_VID_HIGH_S_25E) +#define VTA_VID_HIGH_MASK_65 (0xf << VTA_VID_HIGH_S_65) +#define VTA_RW_STATE BIT(12) +#define VTA_RW_STATE_RD 0 +#define VTA_RW_STATE_WR BIT(12) +#define VTA_RW_OP_EN BIT(13) + +/* VLAN Read/Write Registers for (16/32 bit) */ +#define B53_VLAN_WRITE_25 0x08 +#define B53_VLAN_WRITE_65 0x0a +#define B53_VLAN_READ 0x0c +#define VA_MEMBER_MASK 0x3f +#define VA_UNTAG_S_25 6 +#define VA_UNTAG_MASK_25 0x3f +#define VA_UNTAG_S_65 7 +#define VA_UNTAG_MASK_65 0x1f +#define VA_VID_HIGH_S 12 +#define VA_VID_HIGH_MASK (0xffff << VA_VID_HIGH_S) +#define VA_VALID_25 BIT(20) +#define VA_VALID_25_R4 BIT(24) +#define VA_VALID_65 BIT(14) + +/* VLAN Port Default Tag (16 bit) */ +#define B53_VLAN_PORT_DEF_TAG(i) (0x10 + 2 * (i)) + +/************************************************************************* + * Jumbo Frame Page Registers + *************************************************************************/ + +/* Jumbo Enable Port Mask (bit i == port i enabled) (32 bit) */ +#define B53_JUMBO_PORT_MASK 0x01 +#define B53_JUMBO_PORT_MASK_63XX 0x04 +#define JPM_10_100_JUMBO_EN BIT(24) /* GigE always enabled */ + +/* Good Frame Max Size without 802.1Q TAG (16 bit) */ +#define B53_JUMBO_MAX_SIZE 0x05 +#define B53_JUMBO_MAX_SIZE_63XX 0x08 +#define JMS_MIN_SIZE 1518 +#define JMS_MAX_SIZE 9724 + +/************************************************************************* + * EEE Configuration Page Registers + *************************************************************************/ + +/* EEE Enable control register (16 bit) */ +#define B53_EEE_EN_CTRL 0x00 + +/* EEE LPI assert status register (16 bit) */ +#define B53_EEE_LPI_ASSERT_STS 0x02 + +/* EEE LPI indicate status register (16 bit) */ +#define B53_EEE_LPI_INDICATE 0x4 + +/* EEE Receiving idle symbols status register (16 bit) */ +#define B53_EEE_RX_IDLE_SYM_STS 0x6 + +/* EEE Pipeline timer register (32 bit) */ +#define B53_EEE_PIP_TIMER 0xC + +/* EEE Sleep timer Gig register (32 bit) */ +#define B53_EEE_SLEEP_TIMER_GIG(i) (0x10 + 4 * (i)) + +/* EEE Sleep timer FE register (32 bit) */ +#define B53_EEE_SLEEP_TIMER_FE(i) (0x34 + 4 * (i)) + +/* EEE Minimum LP timer Gig register (32 bit) */ +#define B53_EEE_MIN_LP_TIMER_GIG(i) (0x58 + 4 * (i)) + +/* EEE Minimum LP timer FE register (32 bit) */ +#define B53_EEE_MIN_LP_TIMER_FE(i) (0x7c + 4 * (i)) + +/* EEE Wake timer Gig register (16 bit) */ +#define B53_EEE_WAKE_TIMER_GIG(i) (0xa0 + 2 * (i)) + +/* EEE Wake timer FE register (16 bit) */ +#define B53_EEE_WAKE_TIMER_FE(i) (0xb2 + 2 * (i)) + + +/************************************************************************* + * CFP Configuration Page Registers + *************************************************************************/ + +/* CFP Control Register with ports map (8 bit) */ +#define B53_CFP_CTRL 0x00 + +#endif /* !__B53_REGS_H */ diff --git a/drivers/net/dsa/b53/b53_serdes.c b/drivers/net/dsa/b53/b53_serdes.c new file mode 100644 index 0000000000..3f8a491ce8 --- /dev/null +++ b/drivers/net/dsa/b53/b53_serdes.c @@ -0,0 +1,250 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Northstar Plus switch SerDes/SGMII PHY main logic + * + * Copyright (C) 2018 Florian Fainelli <f.fainelli@gmail.com> + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/phy.h> +#include <linux/phylink.h> +#include <net/dsa.h> + +#include "b53_priv.h" +#include "b53_serdes.h" +#include "b53_regs.h" + +static inline struct b53_pcs *pcs_to_b53_pcs(struct phylink_pcs *pcs) +{ + return container_of(pcs, struct b53_pcs, pcs); +} + +static void b53_serdes_write_blk(struct b53_device *dev, u8 offset, u16 block, + u16 value) +{ + b53_write16(dev, B53_SERDES_PAGE, B53_SERDES_BLKADDR, block); + b53_write16(dev, B53_SERDES_PAGE, offset, value); +} + +static u16 b53_serdes_read_blk(struct b53_device *dev, u8 offset, u16 block) +{ + u16 value; + + b53_write16(dev, B53_SERDES_PAGE, B53_SERDES_BLKADDR, block); + b53_read16(dev, B53_SERDES_PAGE, offset, &value); + + return value; +} + +static void b53_serdes_set_lane(struct b53_device *dev, u8 lane) +{ + if (dev->serdes_lane == lane) + return; + + WARN_ON(lane > 1); + + b53_serdes_write_blk(dev, B53_SERDES_LANE, + SERDES_XGXSBLK0_BLOCKADDRESS, lane); + dev->serdes_lane = lane; +} + +static void b53_serdes_write(struct b53_device *dev, u8 lane, + u8 offset, u16 block, u16 value) +{ + b53_serdes_set_lane(dev, lane); + b53_serdes_write_blk(dev, offset, block, value); +} + +static u16 b53_serdes_read(struct b53_device *dev, u8 lane, + u8 offset, u16 block) +{ + b53_serdes_set_lane(dev, lane); + return b53_serdes_read_blk(dev, offset, block); +} + +static int b53_serdes_config(struct phylink_pcs *pcs, unsigned int neg_mode, + phy_interface_t interface, + const unsigned long *advertising, + bool permit_pause_to_mac) +{ + struct b53_device *dev = pcs_to_b53_pcs(pcs)->dev; + u8 lane = pcs_to_b53_pcs(pcs)->lane; + u16 reg; + + reg = b53_serdes_read(dev, lane, B53_SERDES_DIGITAL_CONTROL(1), + SERDES_DIGITAL_BLK); + if (interface == PHY_INTERFACE_MODE_1000BASEX) + reg |= FIBER_MODE_1000X; + else + reg &= ~FIBER_MODE_1000X; + b53_serdes_write(dev, lane, B53_SERDES_DIGITAL_CONTROL(1), + SERDES_DIGITAL_BLK, reg); + + return 0; +} + +static void b53_serdes_an_restart(struct phylink_pcs *pcs) +{ + struct b53_device *dev = pcs_to_b53_pcs(pcs)->dev; + u8 lane = pcs_to_b53_pcs(pcs)->lane; + u16 reg; + + reg = b53_serdes_read(dev, lane, B53_SERDES_MII_REG(MII_BMCR), + SERDES_MII_BLK); + reg |= BMCR_ANRESTART; + b53_serdes_write(dev, lane, B53_SERDES_MII_REG(MII_BMCR), + SERDES_MII_BLK, reg); +} + +static void b53_serdes_get_state(struct phylink_pcs *pcs, + struct phylink_link_state *state) +{ + struct b53_device *dev = pcs_to_b53_pcs(pcs)->dev; + u8 lane = pcs_to_b53_pcs(pcs)->lane; + u16 dig, bmsr; + + dig = b53_serdes_read(dev, lane, B53_SERDES_DIGITAL_STATUS, + SERDES_DIGITAL_BLK); + bmsr = b53_serdes_read(dev, lane, B53_SERDES_MII_REG(MII_BMSR), + SERDES_MII_BLK); + + switch ((dig >> SPEED_STATUS_SHIFT) & SPEED_STATUS_MASK) { + case SPEED_STATUS_10: + state->speed = SPEED_10; + break; + case SPEED_STATUS_100: + state->speed = SPEED_100; + break; + case SPEED_STATUS_1000: + state->speed = SPEED_1000; + break; + default: + case SPEED_STATUS_2500: + state->speed = SPEED_2500; + break; + } + + state->duplex = dig & DUPLEX_STATUS ? DUPLEX_FULL : DUPLEX_HALF; + state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE); + state->link = !!(dig & LINK_STATUS); + if (dig & PAUSE_RESOLUTION_RX_SIDE) + state->pause |= MLO_PAUSE_RX; + if (dig & PAUSE_RESOLUTION_TX_SIDE) + state->pause |= MLO_PAUSE_TX; +} + +void b53_serdes_link_set(struct b53_device *dev, int port, unsigned int mode, + phy_interface_t interface, bool link_up) +{ + u8 lane = b53_serdes_map_lane(dev, port); + u16 reg; + + if (lane == B53_INVALID_LANE) + return; + + reg = b53_serdes_read(dev, lane, B53_SERDES_MII_REG(MII_BMCR), + SERDES_MII_BLK); + if (link_up) + reg &= ~BMCR_PDOWN; + else + reg |= BMCR_PDOWN; + b53_serdes_write(dev, lane, B53_SERDES_MII_REG(MII_BMCR), + SERDES_MII_BLK, reg); +} +EXPORT_SYMBOL(b53_serdes_link_set); + +static const struct phylink_pcs_ops b53_pcs_ops = { + .pcs_get_state = b53_serdes_get_state, + .pcs_config = b53_serdes_config, + .pcs_an_restart = b53_serdes_an_restart, +}; + +void b53_serdes_phylink_get_caps(struct b53_device *dev, int port, + struct phylink_config *config) +{ + u8 lane = b53_serdes_map_lane(dev, port); + + if (lane == B53_INVALID_LANE) + return; + + switch (lane) { + case 0: + /* It appears lane 0 supports 2500base-X and 1000base-X */ + __set_bit(PHY_INTERFACE_MODE_2500BASEX, + config->supported_interfaces); + config->mac_capabilities |= MAC_2500FD; + fallthrough; + case 1: + /* It appears lane 1 only supports 1000base-X and SGMII */ + __set_bit(PHY_INTERFACE_MODE_1000BASEX, + config->supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_SGMII, + config->supported_interfaces); + config->mac_capabilities |= MAC_1000FD; + break; + default: + break; + } +} +EXPORT_SYMBOL(b53_serdes_phylink_get_caps); + +struct phylink_pcs *b53_serdes_phylink_mac_select_pcs(struct b53_device *dev, + int port, + phy_interface_t interface) +{ + u8 lane = b53_serdes_map_lane(dev, port); + + if (lane == B53_INVALID_LANE || lane >= B53_N_PCS || + !dev->pcs[lane].dev) + return NULL; + + if (!phy_interface_mode_is_8023z(interface) && + interface != PHY_INTERFACE_MODE_SGMII) + return NULL; + + return &dev->pcs[lane].pcs; +} +EXPORT_SYMBOL(b53_serdes_phylink_mac_select_pcs); + +int b53_serdes_init(struct b53_device *dev, int port) +{ + u8 lane = b53_serdes_map_lane(dev, port); + struct b53_pcs *pcs; + u16 id0, msb, lsb; + + if (lane == B53_INVALID_LANE) + return -EINVAL; + + id0 = b53_serdes_read(dev, lane, B53_SERDES_ID0, SERDES_ID0); + msb = b53_serdes_read(dev, lane, B53_SERDES_MII_REG(MII_PHYSID1), + SERDES_MII_BLK); + lsb = b53_serdes_read(dev, lane, B53_SERDES_MII_REG(MII_PHYSID2), + SERDES_MII_BLK); + if (id0 == 0 || id0 == 0xffff) { + dev_err(dev->dev, "SerDes not initialized, check settings\n"); + return -ENODEV; + } + + dev_info(dev->dev, + "SerDes lane %d, model: %d, rev %c%d (OUI: 0x%08x)\n", + lane, id0 & SERDES_ID0_MODEL_MASK, + (id0 >> SERDES_ID0_REV_LETTER_SHIFT) + 0x41, + (id0 >> SERDES_ID0_REV_NUM_SHIFT) & SERDES_ID0_REV_NUM_MASK, + (u32)msb << 16 | lsb); + + pcs = &dev->pcs[lane]; + pcs->dev = dev; + pcs->lane = lane; + pcs->pcs.ops = &b53_pcs_ops; + pcs->pcs.neg_mode = true; + + return 0; +} +EXPORT_SYMBOL(b53_serdes_init); + +MODULE_AUTHOR("Florian Fainelli <f.fainelli@gmail.com>"); +MODULE_DESCRIPTION("B53 Switch SerDes driver"); +MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/net/dsa/b53/b53_serdes.h b/drivers/net/dsa/b53/b53_serdes.h new file mode 100644 index 0000000000..3d367c4df4 --- /dev/null +++ b/drivers/net/dsa/b53/b53_serdes.h @@ -0,0 +1,124 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* + * Northstar Plus switch SerDes/SGMII PHY definitions + * + * Copyright (C) 2018 Florian Fainelli <f.fainelli@gmail.com> + */ + +#include <linux/phy.h> +#include <linux/types.h> + +/* Non-standard page used to access SerDes PHY registers on NorthStar Plus */ +#define B53_SERDES_PAGE 0x16 +#define B53_SERDES_BLKADDR 0x3e +#define B53_SERDES_LANE 0x3c + +#define B53_SERDES_ID0 0x20 +#define SERDES_ID0_MODEL_MASK 0x3f +#define SERDES_ID0_REV_NUM_SHIFT 11 +#define SERDES_ID0_REV_NUM_MASK 0x7 +#define SERDES_ID0_REV_LETTER_SHIFT 14 + +#define B53_SERDES_MII_REG(x) (0x20 + (x) * 2) +#define B53_SERDES_DIGITAL_CONTROL(x) (0x1e + (x) * 2) +#define B53_SERDES_DIGITAL_STATUS 0x28 + +/* SERDES_DIGITAL_CONTROL1 */ +#define FIBER_MODE_1000X BIT(0) +#define TBI_INTERFACE BIT(1) +#define SIGNAL_DETECT_EN BIT(2) +#define INVERT_SIGNAL_DETECT BIT(3) +#define AUTODET_EN BIT(4) +#define SGMII_MASTER_MODE BIT(5) +#define DISABLE_DLL_PWRDOWN BIT(6) +#define CRC_CHECKER_DIS BIT(7) +#define COMMA_DET_EN BIT(8) +#define ZERO_COMMA_DET_EN BIT(9) +#define REMOTE_LOOPBACK BIT(10) +#define SEL_RX_PKTS_FOR_CNTR BIT(11) +#define MASTER_MDIO_PHY_SEL BIT(13) +#define DISABLE_SIGNAL_DETECT_FLT BIT(14) + +/* SERDES_DIGITAL_CONTROL2 */ +#define EN_PARALLEL_DET BIT(0) +#define DIS_FALSE_LINK BIT(1) +#define FLT_FORCE_LINK BIT(2) +#define EN_AUTONEG_ERR_TIMER BIT(3) +#define DIS_REMOTE_FAULT_SENSING BIT(4) +#define FORCE_XMIT_DATA BIT(5) +#define AUTONEG_FAST_TIMERS BIT(6) +#define DIS_CARRIER_EXTEND BIT(7) +#define DIS_TRRR_GENERATION BIT(8) +#define BYPASS_PCS_RX BIT(9) +#define BYPASS_PCS_TX BIT(10) +#define TEST_CNTR_EN BIT(11) +#define TX_PACKET_SEQ_TEST BIT(12) +#define TX_IDLE_JAM_SEQ_TEST BIT(13) +#define CLR_BER_CNTR BIT(14) + +/* SERDES_DIGITAL_CONTROL3 */ +#define TX_FIFO_RST BIT(0) +#define FIFO_ELAST_TX_RX_SHIFT 1 +#define FIFO_ELAST_TX_RX_5K 0 +#define FIFO_ELAST_TX_RX_10K 1 +#define FIFO_ELAST_TX_RX_13_5K 2 +#define FIFO_ELAST_TX_RX_18_5K 3 +#define BLOCK_TXEN_MODE BIT(9) +#define JAM_FALSE_CARRIER_MODE BIT(10) +#define EXT_PHY_CRS_MODE BIT(11) +#define INVERT_EXT_PHY_CRS BIT(12) +#define DISABLE_TX_CRS BIT(13) + +/* SERDES_DIGITAL_STATUS */ +#define SGMII_MODE BIT(0) +#define LINK_STATUS BIT(1) +#define DUPLEX_STATUS BIT(2) +#define SPEED_STATUS_SHIFT 3 +#define SPEED_STATUS_10 0 +#define SPEED_STATUS_100 1 +#define SPEED_STATUS_1000 2 +#define SPEED_STATUS_2500 3 +#define SPEED_STATUS_MASK SPEED_STATUS_2500 +#define PAUSE_RESOLUTION_TX_SIDE BIT(5) +#define PAUSE_RESOLUTION_RX_SIDE BIT(6) +#define LINK_STATUS_CHANGE BIT(7) +#define EARLY_END_EXT_DET BIT(8) +#define CARRIER_EXT_ERR_DET BIT(9) +#define RX_ERR_DET BIT(10) +#define TX_ERR_DET BIT(11) +#define CRC_ERR_DET BIT(12) +#define FALSE_CARRIER_ERR_DET BIT(13) +#define RXFIFO_ERR_DET BIT(14) +#define TXFIFO_ERR_DET BIT(15) + +/* Block offsets */ +#define SERDES_DIGITAL_BLK 0x8300 +#define SERDES_ID0 0x8310 +#define SERDES_MII_BLK 0xffe0 +#define SERDES_XGXSBLK0_BLOCKADDRESS 0xffd0 + +struct phylink_link_state; + +static inline u8 b53_serdes_map_lane(struct b53_device *dev, int port) +{ + if (!dev->ops->serdes_map_lane) + return B53_INVALID_LANE; + + return dev->ops->serdes_map_lane(dev, port); +} + +void b53_serdes_link_set(struct b53_device *dev, int port, unsigned int mode, + phy_interface_t interface, bool link_up); +struct phylink_pcs *b53_serdes_phylink_mac_select_pcs(struct b53_device *dev, + int port, + phy_interface_t interface); +void b53_serdes_phylink_get_caps(struct b53_device *dev, int port, + struct phylink_config *config); +#if IS_ENABLED(CONFIG_B53_SERDES) +int b53_serdes_init(struct b53_device *dev, int port); +#else +static inline int b53_serdes_init(struct b53_device *dev, int port) +{ + return -ENODEV; +} +#endif diff --git a/drivers/net/dsa/b53/b53_spi.c b/drivers/net/dsa/b53/b53_spi.c new file mode 100644 index 0000000000..308f15d383 --- /dev/null +++ b/drivers/net/dsa/b53/b53_spi.c @@ -0,0 +1,376 @@ +/* + * B53 register access through SPI + * + * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <asm/unaligned.h> + +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/spi/spi.h> +#include <linux/platform_data/b53.h> + +#include "b53_priv.h" + +#define B53_SPI_DATA 0xf0 + +#define B53_SPI_STATUS 0xfe +#define B53_SPI_CMD_SPIF BIT(7) +#define B53_SPI_CMD_RACK BIT(5) + +#define B53_SPI_CMD_READ 0x00 +#define B53_SPI_CMD_WRITE 0x01 +#define B53_SPI_CMD_NORMAL 0x60 +#define B53_SPI_CMD_FAST 0x10 + +#define B53_SPI_PAGE_SELECT 0xff + +static inline int b53_spi_read_reg(struct spi_device *spi, u8 reg, u8 *val, + unsigned int len) +{ + u8 txbuf[2]; + + txbuf[0] = B53_SPI_CMD_NORMAL | B53_SPI_CMD_READ; + txbuf[1] = reg; + + return spi_write_then_read(spi, txbuf, 2, val, len); +} + +static inline int b53_spi_clear_status(struct spi_device *spi) +{ + unsigned int i; + u8 rxbuf; + int ret; + + for (i = 0; i < 10; i++) { + ret = b53_spi_read_reg(spi, B53_SPI_STATUS, &rxbuf, 1); + if (ret) + return ret; + + if (!(rxbuf & B53_SPI_CMD_SPIF)) + break; + + mdelay(1); + } + + if (i == 10) + return -EIO; + + return 0; +} + +static inline int b53_spi_set_page(struct spi_device *spi, u8 page) +{ + u8 txbuf[3]; + + txbuf[0] = B53_SPI_CMD_NORMAL | B53_SPI_CMD_WRITE; + txbuf[1] = B53_SPI_PAGE_SELECT; + txbuf[2] = page; + + return spi_write(spi, txbuf, sizeof(txbuf)); +} + +static inline int b53_prepare_reg_access(struct spi_device *spi, u8 page) +{ + int ret = b53_spi_clear_status(spi); + + if (ret) + return ret; + + return b53_spi_set_page(spi, page); +} + +static int b53_spi_prepare_reg_read(struct spi_device *spi, u8 reg) +{ + u8 rxbuf; + int retry_count; + int ret; + + ret = b53_spi_read_reg(spi, reg, &rxbuf, 1); + if (ret) + return ret; + + for (retry_count = 0; retry_count < 10; retry_count++) { + ret = b53_spi_read_reg(spi, B53_SPI_STATUS, &rxbuf, 1); + if (ret) + return ret; + + if (rxbuf & B53_SPI_CMD_RACK) + break; + + mdelay(1); + } + + if (retry_count == 10) + return -EIO; + + return 0; +} + +static int b53_spi_read(struct b53_device *dev, u8 page, u8 reg, u8 *data, + unsigned int len) +{ + struct spi_device *spi = dev->priv; + int ret; + + ret = b53_prepare_reg_access(spi, page); + if (ret) + return ret; + + ret = b53_spi_prepare_reg_read(spi, reg); + if (ret) + return ret; + + return b53_spi_read_reg(spi, B53_SPI_DATA, data, len); +} + +static int b53_spi_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val) +{ + return b53_spi_read(dev, page, reg, val, 1); +} + +static int b53_spi_read16(struct b53_device *dev, u8 page, u8 reg, u16 *val) +{ + __le16 value; + int ret; + + ret = b53_spi_read(dev, page, reg, (u8 *)&value, 2); + + if (!ret) + *val = le16_to_cpu(value); + + return ret; +} + +static int b53_spi_read32(struct b53_device *dev, u8 page, u8 reg, u32 *val) +{ + __le32 value; + int ret; + + ret = b53_spi_read(dev, page, reg, (u8 *)&value, 4); + + if (!ret) + *val = le32_to_cpu(value); + + return ret; +} + +static int b53_spi_read48(struct b53_device *dev, u8 page, u8 reg, u64 *val) +{ + __le64 value; + int ret; + + *val = 0; + ret = b53_spi_read(dev, page, reg, (u8 *)&value, 6); + if (!ret) + *val = le64_to_cpu(value); + + return ret; +} + +static int b53_spi_read64(struct b53_device *dev, u8 page, u8 reg, u64 *val) +{ + __le64 value; + int ret; + + ret = b53_spi_read(dev, page, reg, (u8 *)&value, 8); + + if (!ret) + *val = le64_to_cpu(value); + + return ret; +} + +static int b53_spi_write8(struct b53_device *dev, u8 page, u8 reg, u8 value) +{ + struct spi_device *spi = dev->priv; + int ret; + u8 txbuf[3]; + + ret = b53_prepare_reg_access(spi, page); + if (ret) + return ret; + + txbuf[0] = B53_SPI_CMD_NORMAL | B53_SPI_CMD_WRITE; + txbuf[1] = reg; + txbuf[2] = value; + + return spi_write(spi, txbuf, sizeof(txbuf)); +} + +static int b53_spi_write16(struct b53_device *dev, u8 page, u8 reg, u16 value) +{ + struct spi_device *spi = dev->priv; + int ret; + u8 txbuf[4]; + + ret = b53_prepare_reg_access(spi, page); + if (ret) + return ret; + + txbuf[0] = B53_SPI_CMD_NORMAL | B53_SPI_CMD_WRITE; + txbuf[1] = reg; + put_unaligned_le16(value, &txbuf[2]); + + return spi_write(spi, txbuf, sizeof(txbuf)); +} + +static int b53_spi_write32(struct b53_device *dev, u8 page, u8 reg, u32 value) +{ + struct spi_device *spi = dev->priv; + int ret; + u8 txbuf[6]; + + ret = b53_prepare_reg_access(spi, page); + if (ret) + return ret; + + txbuf[0] = B53_SPI_CMD_NORMAL | B53_SPI_CMD_WRITE; + txbuf[1] = reg; + put_unaligned_le32(value, &txbuf[2]); + + return spi_write(spi, txbuf, sizeof(txbuf)); +} + +static int b53_spi_write48(struct b53_device *dev, u8 page, u8 reg, u64 value) +{ + struct spi_device *spi = dev->priv; + int ret; + u8 txbuf[10]; + + ret = b53_prepare_reg_access(spi, page); + if (ret) + return ret; + + txbuf[0] = B53_SPI_CMD_NORMAL | B53_SPI_CMD_WRITE; + txbuf[1] = reg; + put_unaligned_le64(value, &txbuf[2]); + + return spi_write(spi, txbuf, sizeof(txbuf) - 2); +} + +static int b53_spi_write64(struct b53_device *dev, u8 page, u8 reg, u64 value) +{ + struct spi_device *spi = dev->priv; + int ret; + u8 txbuf[10]; + + ret = b53_prepare_reg_access(spi, page); + if (ret) + return ret; + + txbuf[0] = B53_SPI_CMD_NORMAL | B53_SPI_CMD_WRITE; + txbuf[1] = reg; + put_unaligned_le64(value, &txbuf[2]); + + return spi_write(spi, txbuf, sizeof(txbuf)); +} + +static const struct b53_io_ops b53_spi_ops = { + .read8 = b53_spi_read8, + .read16 = b53_spi_read16, + .read32 = b53_spi_read32, + .read48 = b53_spi_read48, + .read64 = b53_spi_read64, + .write8 = b53_spi_write8, + .write16 = b53_spi_write16, + .write32 = b53_spi_write32, + .write48 = b53_spi_write48, + .write64 = b53_spi_write64, +}; + +static int b53_spi_probe(struct spi_device *spi) +{ + struct b53_device *dev; + int ret; + + dev = b53_switch_alloc(&spi->dev, &b53_spi_ops, spi); + if (!dev) + return -ENOMEM; + + if (spi->dev.platform_data) + dev->pdata = spi->dev.platform_data; + + ret = b53_switch_register(dev); + if (ret) + return ret; + + spi_set_drvdata(spi, dev); + + return 0; +} + +static void b53_spi_remove(struct spi_device *spi) +{ + struct b53_device *dev = spi_get_drvdata(spi); + + if (dev) + b53_switch_remove(dev); +} + +static void b53_spi_shutdown(struct spi_device *spi) +{ + struct b53_device *dev = spi_get_drvdata(spi); + + if (dev) + b53_switch_shutdown(dev); + + spi_set_drvdata(spi, NULL); +} + +static const struct of_device_id b53_spi_of_match[] = { + { .compatible = "brcm,bcm5325" }, + { .compatible = "brcm,bcm5365" }, + { .compatible = "brcm,bcm5395" }, + { .compatible = "brcm,bcm5397" }, + { .compatible = "brcm,bcm5398" }, + { .compatible = "brcm,bcm53115" }, + { .compatible = "brcm,bcm53125" }, + { .compatible = "brcm,bcm53128" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, b53_spi_of_match); + +static const struct spi_device_id b53_spi_ids[] = { + { .name = "bcm5325" }, + { .name = "bcm5365" }, + { .name = "bcm5395" }, + { .name = "bcm5397" }, + { .name = "bcm5398" }, + { .name = "bcm53115" }, + { .name = "bcm53125" }, + { .name = "bcm53128" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(spi, b53_spi_ids); + +static struct spi_driver b53_spi_driver = { + .driver = { + .name = "b53-switch", + .of_match_table = b53_spi_of_match, + }, + .probe = b53_spi_probe, + .remove = b53_spi_remove, + .shutdown = b53_spi_shutdown, + .id_table = b53_spi_ids, +}; + +module_spi_driver(b53_spi_driver); + +MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>"); +MODULE_DESCRIPTION("B53 SPI access driver"); +MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/net/dsa/b53/b53_srab.c b/drivers/net/dsa/b53/b53_srab.c new file mode 100644 index 0000000000..bcb4403440 --- /dev/null +++ b/drivers/net/dsa/b53/b53_srab.c @@ -0,0 +1,698 @@ +/* + * B53 register access through Switch Register Access Bridge Registers + * + * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/platform_data/b53.h> +#include <linux/of.h> + +#include "b53_priv.h" +#include "b53_serdes.h" + +/* command and status register of the SRAB */ +#define B53_SRAB_CMDSTAT 0x2c +#define B53_SRAB_CMDSTAT_RST BIT(2) +#define B53_SRAB_CMDSTAT_WRITE BIT(1) +#define B53_SRAB_CMDSTAT_GORDYN BIT(0) +#define B53_SRAB_CMDSTAT_PAGE 24 +#define B53_SRAB_CMDSTAT_REG 16 + +/* high order word of write data to switch registe */ +#define B53_SRAB_WD_H 0x30 + +/* low order word of write data to switch registe */ +#define B53_SRAB_WD_L 0x34 + +/* high order word of read data from switch register */ +#define B53_SRAB_RD_H 0x38 + +/* low order word of read data from switch register */ +#define B53_SRAB_RD_L 0x3c + +/* command and status register of the SRAB */ +#define B53_SRAB_CTRLS 0x40 +#define B53_SRAB_CTRLS_HOST_INTR BIT(1) +#define B53_SRAB_CTRLS_RCAREQ BIT(3) +#define B53_SRAB_CTRLS_RCAGNT BIT(4) +#define B53_SRAB_CTRLS_SW_INIT_DONE BIT(6) + +/* the register captures interrupt pulses from the switch */ +#define B53_SRAB_INTR 0x44 +#define B53_SRAB_INTR_P(x) BIT(x) +#define B53_SRAB_SWITCH_PHY BIT(8) +#define B53_SRAB_1588_SYNC BIT(9) +#define B53_SRAB_IMP1_SLEEP_TIMER BIT(10) +#define B53_SRAB_P7_SLEEP_TIMER BIT(11) +#define B53_SRAB_IMP0_SLEEP_TIMER BIT(12) + +/* Port mux configuration registers */ +#define B53_MUX_CONFIG_P5 0x00 +#define MUX_CONFIG_SGMII 0 +#define MUX_CONFIG_MII_LITE 1 +#define MUX_CONFIG_RGMII 2 +#define MUX_CONFIG_GMII 3 +#define MUX_CONFIG_GPHY 4 +#define MUX_CONFIG_INTERNAL 5 +#define MUX_CONFIG_MASK 0x7 +#define B53_MUX_CONFIG_P4 0x04 + +struct b53_srab_port_priv { + int irq; + bool irq_enabled; + struct b53_device *dev; + unsigned int num; + phy_interface_t mode; +}; + +struct b53_srab_priv { + void __iomem *regs; + void __iomem *mux_config; + struct b53_srab_port_priv port_intrs[B53_N_PORTS]; +}; + +static int b53_srab_request_grant(struct b53_device *dev) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + u32 ctrls; + int i; + + ctrls = readl(regs + B53_SRAB_CTRLS); + ctrls |= B53_SRAB_CTRLS_RCAREQ; + writel(ctrls, regs + B53_SRAB_CTRLS); + + for (i = 0; i < 20; i++) { + ctrls = readl(regs + B53_SRAB_CTRLS); + if (ctrls & B53_SRAB_CTRLS_RCAGNT) + break; + usleep_range(10, 100); + } + if (WARN_ON(i == 5)) + return -EIO; + + return 0; +} + +static void b53_srab_release_grant(struct b53_device *dev) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + u32 ctrls; + + ctrls = readl(regs + B53_SRAB_CTRLS); + ctrls &= ~B53_SRAB_CTRLS_RCAREQ; + writel(ctrls, regs + B53_SRAB_CTRLS); +} + +static int b53_srab_op(struct b53_device *dev, u8 page, u8 reg, u32 op) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int i; + u32 cmdstat; + + /* set register address */ + cmdstat = (page << B53_SRAB_CMDSTAT_PAGE) | + (reg << B53_SRAB_CMDSTAT_REG) | + B53_SRAB_CMDSTAT_GORDYN | + op; + writel(cmdstat, regs + B53_SRAB_CMDSTAT); + + /* check if operation completed */ + for (i = 0; i < 5; ++i) { + cmdstat = readl(regs + B53_SRAB_CMDSTAT); + if (!(cmdstat & B53_SRAB_CMDSTAT_GORDYN)) + break; + usleep_range(10, 100); + } + + if (WARN_ON(i == 5)) + return -EIO; + + return 0; +} + +static int b53_srab_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + ret = b53_srab_op(dev, page, reg, 0); + if (ret) + goto err; + + *val = readl(regs + B53_SRAB_RD_L) & 0xff; + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_read16(struct b53_device *dev, u8 page, u8 reg, u16 *val) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + ret = b53_srab_op(dev, page, reg, 0); + if (ret) + goto err; + + *val = readl(regs + B53_SRAB_RD_L) & 0xffff; + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_read32(struct b53_device *dev, u8 page, u8 reg, u32 *val) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + ret = b53_srab_op(dev, page, reg, 0); + if (ret) + goto err; + + *val = readl(regs + B53_SRAB_RD_L); + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_read48(struct b53_device *dev, u8 page, u8 reg, u64 *val) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + ret = b53_srab_op(dev, page, reg, 0); + if (ret) + goto err; + + *val = readl(regs + B53_SRAB_RD_L); + *val += ((u64)readl(regs + B53_SRAB_RD_H) & 0xffff) << 32; + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_read64(struct b53_device *dev, u8 page, u8 reg, u64 *val) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + ret = b53_srab_op(dev, page, reg, 0); + if (ret) + goto err; + + *val = readl(regs + B53_SRAB_RD_L); + *val += (u64)readl(regs + B53_SRAB_RD_H) << 32; + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_write8(struct b53_device *dev, u8 page, u8 reg, u8 value) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + writel(value, regs + B53_SRAB_WD_L); + + ret = b53_srab_op(dev, page, reg, B53_SRAB_CMDSTAT_WRITE); + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_write16(struct b53_device *dev, u8 page, u8 reg, + u16 value) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + writel(value, regs + B53_SRAB_WD_L); + + ret = b53_srab_op(dev, page, reg, B53_SRAB_CMDSTAT_WRITE); + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_write32(struct b53_device *dev, u8 page, u8 reg, + u32 value) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + writel(value, regs + B53_SRAB_WD_L); + + ret = b53_srab_op(dev, page, reg, B53_SRAB_CMDSTAT_WRITE); + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_write48(struct b53_device *dev, u8 page, u8 reg, + u64 value) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + writel((u32)value, regs + B53_SRAB_WD_L); + writel((u16)(value >> 32), regs + B53_SRAB_WD_H); + + ret = b53_srab_op(dev, page, reg, B53_SRAB_CMDSTAT_WRITE); + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static int b53_srab_write64(struct b53_device *dev, u8 page, u8 reg, + u64 value) +{ + struct b53_srab_priv *priv = dev->priv; + u8 __iomem *regs = priv->regs; + int ret = 0; + + ret = b53_srab_request_grant(dev); + if (ret) + goto err; + + writel((u32)value, regs + B53_SRAB_WD_L); + writel((u32)(value >> 32), regs + B53_SRAB_WD_H); + + ret = b53_srab_op(dev, page, reg, B53_SRAB_CMDSTAT_WRITE); + +err: + b53_srab_release_grant(dev); + + return ret; +} + +static irqreturn_t b53_srab_port_thread(int irq, void *dev_id) +{ + struct b53_srab_port_priv *port = dev_id; + struct b53_device *dev = port->dev; + + if (port->mode == PHY_INTERFACE_MODE_SGMII) + b53_port_event(dev->ds, port->num); + + return IRQ_HANDLED; +} + +static irqreturn_t b53_srab_port_isr(int irq, void *dev_id) +{ + struct b53_srab_port_priv *port = dev_id; + struct b53_device *dev = port->dev; + struct b53_srab_priv *priv = dev->priv; + + /* Acknowledge the interrupt */ + writel(BIT(port->num), priv->regs + B53_SRAB_INTR); + + return IRQ_WAKE_THREAD; +} + +#if IS_ENABLED(CONFIG_B53_SERDES) +static u8 b53_srab_serdes_map_lane(struct b53_device *dev, int port) +{ + struct b53_srab_priv *priv = dev->priv; + struct b53_srab_port_priv *p = &priv->port_intrs[port]; + + if (p->mode != PHY_INTERFACE_MODE_SGMII) + return B53_INVALID_LANE; + + switch (port) { + case 5: + return 0; + case 4: + return 1; + default: + return B53_INVALID_LANE; + } +} +#endif + +static int b53_srab_irq_enable(struct b53_device *dev, int port) +{ + struct b53_srab_priv *priv = dev->priv; + struct b53_srab_port_priv *p = &priv->port_intrs[port]; + int ret = 0; + + /* Interrupt is optional and was not specified, do not make + * this fatal + */ + if (p->irq == -ENXIO) + return ret; + + ret = request_threaded_irq(p->irq, b53_srab_port_isr, + b53_srab_port_thread, 0, + dev_name(dev->dev), p); + if (!ret) + p->irq_enabled = true; + + return ret; +} + +static void b53_srab_irq_disable(struct b53_device *dev, int port) +{ + struct b53_srab_priv *priv = dev->priv; + struct b53_srab_port_priv *p = &priv->port_intrs[port]; + + if (p->irq_enabled) { + free_irq(p->irq, p); + p->irq_enabled = false; + } +} + +static void b53_srab_phylink_get_caps(struct b53_device *dev, int port, + struct phylink_config *config) +{ + struct b53_srab_priv *priv = dev->priv; + struct b53_srab_port_priv *p = &priv->port_intrs[port]; + + switch (p->mode) { + case PHY_INTERFACE_MODE_SGMII: +#if IS_ENABLED(CONFIG_B53_SERDES) + /* If p->mode indicates SGMII mode, that essentially means we + * are using a serdes. As the serdes for the capabilities. + */ + b53_serdes_phylink_get_caps(dev, port, config); +#endif + break; + + case PHY_INTERFACE_MODE_NA: + break; + + case PHY_INTERFACE_MODE_RGMII: + /* If we support RGMII, support all RGMII modes, since + * that dictates the PHY delay settings. + */ + phy_interface_set_rgmii(config->supported_interfaces); + break; + + default: + /* Some other mode (e.g. MII, GMII etc) */ + __set_bit(p->mode, config->supported_interfaces); + break; + } +} + +static const struct b53_io_ops b53_srab_ops = { + .read8 = b53_srab_read8, + .read16 = b53_srab_read16, + .read32 = b53_srab_read32, + .read48 = b53_srab_read48, + .read64 = b53_srab_read64, + .write8 = b53_srab_write8, + .write16 = b53_srab_write16, + .write32 = b53_srab_write32, + .write48 = b53_srab_write48, + .write64 = b53_srab_write64, + .irq_enable = b53_srab_irq_enable, + .irq_disable = b53_srab_irq_disable, + .phylink_get_caps = b53_srab_phylink_get_caps, +#if IS_ENABLED(CONFIG_B53_SERDES) + .phylink_mac_select_pcs = b53_serdes_phylink_mac_select_pcs, + .serdes_map_lane = b53_srab_serdes_map_lane, + .serdes_link_set = b53_serdes_link_set, +#endif +}; + +static const struct of_device_id b53_srab_of_match[] = { + { .compatible = "brcm,bcm53010-srab" }, + { .compatible = "brcm,bcm53011-srab" }, + { .compatible = "brcm,bcm53012-srab" }, + { .compatible = "brcm,bcm53018-srab" }, + { .compatible = "brcm,bcm53019-srab" }, + { .compatible = "brcm,bcm5301x-srab" }, + { .compatible = "brcm,bcm11360-srab", .data = (void *)BCM583XX_DEVICE_ID }, + { .compatible = "brcm,bcm58522-srab", .data = (void *)BCM58XX_DEVICE_ID }, + { .compatible = "brcm,bcm58525-srab", .data = (void *)BCM58XX_DEVICE_ID }, + { .compatible = "brcm,bcm58535-srab", .data = (void *)BCM58XX_DEVICE_ID }, + { .compatible = "brcm,bcm58622-srab", .data = (void *)BCM58XX_DEVICE_ID }, + { .compatible = "brcm,bcm58623-srab", .data = (void *)BCM58XX_DEVICE_ID }, + { .compatible = "brcm,bcm58625-srab", .data = (void *)BCM58XX_DEVICE_ID }, + { .compatible = "brcm,bcm88312-srab", .data = (void *)BCM58XX_DEVICE_ID }, + { .compatible = "brcm,cygnus-srab", .data = (void *)BCM583XX_DEVICE_ID }, + { .compatible = "brcm,nsp-srab", .data = (void *)BCM58XX_DEVICE_ID }, + { .compatible = "brcm,omega-srab", .data = (void *)BCM583XX_DEVICE_ID }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, b53_srab_of_match); + +static void b53_srab_intr_set(struct b53_srab_priv *priv, bool set) +{ + u32 reg; + + reg = readl(priv->regs + B53_SRAB_CTRLS); + if (set) + reg |= B53_SRAB_CTRLS_HOST_INTR; + else + reg &= ~B53_SRAB_CTRLS_HOST_INTR; + writel(reg, priv->regs + B53_SRAB_CTRLS); +} + +static void b53_srab_prepare_irq(struct platform_device *pdev) +{ + struct b53_device *dev = platform_get_drvdata(pdev); + struct b53_srab_priv *priv = dev->priv; + struct b53_srab_port_priv *port; + unsigned int i; + char *name; + + /* Clear all pending interrupts */ + writel(0xffffffff, priv->regs + B53_SRAB_INTR); + + for (i = 0; i < B53_N_PORTS; i++) { + port = &priv->port_intrs[i]; + + /* There is no port 6 */ + if (i == 6) + continue; + + name = kasprintf(GFP_KERNEL, "link_state_p%d", i); + if (!name) + return; + + port->num = i; + port->dev = dev; + port->irq = platform_get_irq_byname_optional(pdev, name); + kfree(name); + } + + b53_srab_intr_set(priv, true); +} + +static void b53_srab_mux_init(struct platform_device *pdev) +{ + struct b53_device *dev = platform_get_drvdata(pdev); + struct b53_srab_priv *priv = dev->priv; + struct b53_srab_port_priv *p; + unsigned int port; + u32 reg, off = 0; + int ret; + + if (dev->pdata && dev->pdata->chip_id != BCM58XX_DEVICE_ID) + return; + + priv->mux_config = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(priv->mux_config)) + return; + + /* Obtain the port mux configuration so we know which lanes + * actually map to SerDes lanes + */ + for (port = 5; port > 3; port--, off += 4) { + p = &priv->port_intrs[port]; + + reg = readl(priv->mux_config + B53_MUX_CONFIG_P5 + off); + switch (reg & MUX_CONFIG_MASK) { + case MUX_CONFIG_SGMII: + p->mode = PHY_INTERFACE_MODE_SGMII; + ret = b53_serdes_init(dev, port); + if (ret) + continue; + break; + case MUX_CONFIG_MII_LITE: + p->mode = PHY_INTERFACE_MODE_MII; + break; + case MUX_CONFIG_GMII: + p->mode = PHY_INTERFACE_MODE_GMII; + break; + case MUX_CONFIG_RGMII: + p->mode = PHY_INTERFACE_MODE_RGMII; + break; + case MUX_CONFIG_INTERNAL: + p->mode = PHY_INTERFACE_MODE_INTERNAL; + break; + default: + p->mode = PHY_INTERFACE_MODE_NA; + break; + } + + if (p->mode != PHY_INTERFACE_MODE_NA) + dev_info(&pdev->dev, "Port %d mode: %s\n", + port, phy_modes(p->mode)); + } +} + +static int b53_srab_probe(struct platform_device *pdev) +{ + struct b53_platform_data *pdata = pdev->dev.platform_data; + struct device_node *dn = pdev->dev.of_node; + const struct of_device_id *of_id = NULL; + struct b53_srab_priv *priv; + struct b53_device *dev; + + if (dn) + of_id = of_match_node(b53_srab_of_match, dn); + + if (of_id) { + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + pdata->chip_id = (u32)(unsigned long)of_id->data; + } + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->regs)) + return PTR_ERR(priv->regs); + + dev = b53_switch_alloc(&pdev->dev, &b53_srab_ops, priv); + if (!dev) + return -ENOMEM; + + if (pdata) + dev->pdata = pdata; + + platform_set_drvdata(pdev, dev); + + b53_srab_prepare_irq(pdev); + b53_srab_mux_init(pdev); + + return b53_switch_register(dev); +} + +static int b53_srab_remove(struct platform_device *pdev) +{ + struct b53_device *dev = platform_get_drvdata(pdev); + + if (!dev) + return 0; + + b53_srab_intr_set(dev->priv, false); + b53_switch_remove(dev); + + return 0; +} + +static void b53_srab_shutdown(struct platform_device *pdev) +{ + struct b53_device *dev = platform_get_drvdata(pdev); + + if (!dev) + return; + + b53_switch_shutdown(dev); + + platform_set_drvdata(pdev, NULL); +} + +static struct platform_driver b53_srab_driver = { + .probe = b53_srab_probe, + .remove = b53_srab_remove, + .shutdown = b53_srab_shutdown, + .driver = { + .name = "b53-srab-switch", + .of_match_table = b53_srab_of_match, + }, +}; + +module_platform_driver(b53_srab_driver); +MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>"); +MODULE_DESCRIPTION("B53 Switch Register Access Bridge Registers (SRAB) access driver"); +MODULE_LICENSE("Dual BSD/GPL"); 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