-/*
- * Driver for the built-in ethernet switch of the Atheros AR7240 SoC
- * Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org>
- * Copyright (c) 2010 Felix Fietkau <nbd@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- */
-
-#include <linux/etherdevice.h>
-#include <linux/list.h>
-#include <linux/netdevice.h>
-#include <linux/phy.h>
-#include <linux/mii.h>
-#include <linux/bitops.h>
-#include <linux/switch.h>
-#include "ag71xx.h"
-
-#define BITM(_count) (BIT(_count) - 1)
-#define BITS(_shift, _count) (BITM(_count) << _shift)
-
-#define AR7240_REG_MASK_CTRL 0x00
-#define AR7240_MASK_CTRL_REVISION_M BITM(8)
-#define AR7240_MASK_CTRL_VERSION_M BITM(8)
-#define AR7240_MASK_CTRL_VERSION_S 8
-#define AR7240_MASK_CTRL_SOFT_RESET BIT(31)
-
-#define AR7240_REG_MAC_ADDR0 0x20
-#define AR7240_REG_MAC_ADDR1 0x24
-
-#define AR7240_REG_FLOOD_MASK 0x2c
-#define AR7240_FLOOD_MASK_BROAD_TO_CPU BIT(26)
-
-#define AR7240_REG_GLOBAL_CTRL 0x30
-#define AR7240_GLOBAL_CTRL_MTU_M BITM(12)
-
-#define AR7240_REG_VTU 0x0040
-#define AR7240_VTU_OP BITM(3)
-#define AR7240_VTU_OP_NOOP 0x0
-#define AR7240_VTU_OP_FLUSH 0x1
-#define AR7240_VTU_OP_LOAD 0x2
-#define AR7240_VTU_OP_PURGE 0x3
-#define AR7240_VTU_OP_REMOVE_PORT 0x4
-#define AR7240_VTU_ACTIVE BIT(3)
-#define AR7240_VTU_FULL BIT(4)
-#define AR7240_VTU_PORT BITS(8, 4)
-#define AR7240_VTU_PORT_S 8
-#define AR7240_VTU_VID BITS(16, 12)
-#define AR7240_VTU_VID_S 16
-#define AR7240_VTU_PRIO BITS(28, 3)
-#define AR7240_VTU_PRIO_S 28
-#define AR7240_VTU_PRIO_EN BIT(31)
-
-#define AR7240_REG_VTU_DATA 0x0044
-#define AR7240_VTUDATA_MEMBER BITS(0, 10)
-#define AR7240_VTUDATA_VALID BIT(11)
-
-#define AR7240_REG_ATU 0x50
-#define AR7240_ATU_FLUSH_ALL 0x1
-
-#define AR7240_REG_AT_CTRL 0x5c
-#define AR7240_AT_CTRL_AGE_TIME BITS(0, 15)
-#define AR7240_AT_CTRL_AGE_EN BIT(17)
-#define AR7240_AT_CTRL_LEARN_CHANGE BIT(18)
-#define AR7240_AT_CTRL_ARP_EN BIT(20)
-
-#define AR7240_REG_TAG_PRIORITY 0x70
-
-#define AR7240_REG_SERVICE_TAG 0x74
-#define AR7240_SERVICE_TAG_M BITM(16)
-
-#define AR7240_REG_CPU_PORT 0x78
-#define AR7240_MIRROR_PORT_S 4
-#define AR7240_CPU_PORT_EN BIT(8)
-
-#define AR7240_REG_MIB_FUNCTION0 0x80
-#define AR7240_MIB_TIMER_M BITM(16)
-#define AR7240_MIB_AT_HALF_EN BIT(16)
-#define AR7240_MIB_BUSY BIT(17)
-#define AR7240_MIB_FUNC_S 24
-#define AR7240_MIB_FUNC_NO_OP 0x0
-#define AR7240_MIB_FUNC_FLUSH 0x1
-#define AR7240_MIB_FUNC_CAPTURE 0x3
-
-#define AR7240_REG_MDIO_CTRL 0x98
-#define AR7240_MDIO_CTRL_DATA_M BITM(16)
-#define AR7240_MDIO_CTRL_REG_ADDR_S 16
-#define AR7240_MDIO_CTRL_PHY_ADDR_S 21
-#define AR7240_MDIO_CTRL_CMD_WRITE 0
-#define AR7240_MDIO_CTRL_CMD_READ BIT(27)
-#define AR7240_MDIO_CTRL_MASTER_EN BIT(30)
-#define AR7240_MDIO_CTRL_BUSY BIT(31)
-
-#define AR7240_REG_PORT_BASE(_port) (0x100 + (_port) * 0x100)
-
-#define AR7240_REG_PORT_STATUS(_port) (AR7240_REG_PORT_BASE((_port)) + 0x00)
-#define AR7240_PORT_STATUS_SPEED_S 0
-#define AR7240_PORT_STATUS_SPEED_M BITM(2)
-#define AR7240_PORT_STATUS_SPEED_10 0
-#define AR7240_PORT_STATUS_SPEED_100 1
-#define AR7240_PORT_STATUS_SPEED_1000 2
-#define AR7240_PORT_STATUS_TXMAC BIT(2)
-#define AR7240_PORT_STATUS_RXMAC BIT(3)
-#define AR7240_PORT_STATUS_TXFLOW BIT(4)
-#define AR7240_PORT_STATUS_RXFLOW BIT(5)
-#define AR7240_PORT_STATUS_DUPLEX BIT(6)
-#define AR7240_PORT_STATUS_LINK_UP BIT(8)
-#define AR7240_PORT_STATUS_LINK_AUTO BIT(9)
-#define AR7240_PORT_STATUS_LINK_PAUSE BIT(10)
-
-#define AR7240_REG_PORT_CTRL(_port) (AR7240_REG_PORT_BASE((_port)) + 0x04)
-#define AR7240_PORT_CTRL_STATE_M BITM(3)
-#define AR7240_PORT_CTRL_STATE_DISABLED 0
-#define AR7240_PORT_CTRL_STATE_BLOCK 1
-#define AR7240_PORT_CTRL_STATE_LISTEN 2
-#define AR7240_PORT_CTRL_STATE_LEARN 3
-#define AR7240_PORT_CTRL_STATE_FORWARD 4
-#define AR7240_PORT_CTRL_LEARN_LOCK BIT(7)
-#define AR7240_PORT_CTRL_VLAN_MODE_S 8
-#define AR7240_PORT_CTRL_VLAN_MODE_KEEP 0
-#define AR7240_PORT_CTRL_VLAN_MODE_STRIP 1
-#define AR7240_PORT_CTRL_VLAN_MODE_ADD 2
-#define AR7240_PORT_CTRL_VLAN_MODE_DOUBLE_TAG 3
-#define AR7240_PORT_CTRL_IGMP_SNOOP BIT(10)
-#define AR7240_PORT_CTRL_HEADER BIT(11)
-#define AR7240_PORT_CTRL_MAC_LOOP BIT(12)
-#define AR7240_PORT_CTRL_SINGLE_VLAN BIT(13)
-#define AR7240_PORT_CTRL_LEARN BIT(14)
-#define AR7240_PORT_CTRL_DOUBLE_TAG BIT(15)
-#define AR7240_PORT_CTRL_MIRROR_TX BIT(16)
-#define AR7240_PORT_CTRL_MIRROR_RX BIT(17)
-
-#define AR7240_REG_PORT_VLAN(_port) (AR7240_REG_PORT_BASE((_port)) + 0x08)
-
-#define AR7240_PORT_VLAN_DEFAULT_ID_S 0
-#define AR7240_PORT_VLAN_DEST_PORTS_S 16
-#define AR7240_PORT_VLAN_MODE_S 30
-#define AR7240_PORT_VLAN_MODE_PORT_ONLY 0
-#define AR7240_PORT_VLAN_MODE_PORT_FALLBACK 1
-#define AR7240_PORT_VLAN_MODE_VLAN_ONLY 2
-#define AR7240_PORT_VLAN_MODE_SECURE 3
-
-
-#define AR7240_REG_STATS_BASE(_port) (0x20000 + (_port) * 0x100)
-
-#define AR7240_STATS_RXBROAD 0x00
-#define AR7240_STATS_RXPAUSE 0x04
-#define AR7240_STATS_RXMULTI 0x08
-#define AR7240_STATS_RXFCSERR 0x0c
-#define AR7240_STATS_RXALIGNERR 0x10
-#define AR7240_STATS_RXRUNT 0x14
-#define AR7240_STATS_RXFRAGMENT 0x18
-#define AR7240_STATS_RX64BYTE 0x1c
-#define AR7240_STATS_RX128BYTE 0x20
-#define AR7240_STATS_RX256BYTE 0x24
-#define AR7240_STATS_RX512BYTE 0x28
-#define AR7240_STATS_RX1024BYTE 0x2c
-#define AR7240_STATS_RX1518BYTE 0x30
-#define AR7240_STATS_RXMAXBYTE 0x34
-#define AR7240_STATS_RXTOOLONG 0x38
-#define AR7240_STATS_RXGOODBYTE 0x3c
-#define AR7240_STATS_RXBADBYTE 0x44
-#define AR7240_STATS_RXOVERFLOW 0x4c
-#define AR7240_STATS_FILTERED 0x50
-#define AR7240_STATS_TXBROAD 0x54
-#define AR7240_STATS_TXPAUSE 0x58
-#define AR7240_STATS_TXMULTI 0x5c
-#define AR7240_STATS_TXUNDERRUN 0x60
-#define AR7240_STATS_TX64BYTE 0x64
-#define AR7240_STATS_TX128BYTE 0x68
-#define AR7240_STATS_TX256BYTE 0x6c
-#define AR7240_STATS_TX512BYTE 0x70
-#define AR7240_STATS_TX1024BYTE 0x74
-#define AR7240_STATS_TX1518BYTE 0x78
-#define AR7240_STATS_TXMAXBYTE 0x7c
-#define AR7240_STATS_TXOVERSIZE 0x80
-#define AR7240_STATS_TXBYTE 0x84
-#define AR7240_STATS_TXCOLLISION 0x8c
-#define AR7240_STATS_TXABORTCOL 0x90
-#define AR7240_STATS_TXMULTICOL 0x94
-#define AR7240_STATS_TXSINGLECOL 0x98
-#define AR7240_STATS_TXEXCDEFER 0x9c
-#define AR7240_STATS_TXDEFER 0xa0
-#define AR7240_STATS_TXLATECOL 0xa4
-
-#define AR7240_PORT_CPU 0
-#define AR7240_NUM_PORTS 6
-#define AR7240_NUM_PHYS 5
-
-#define AR7240_PHY_ID1 0x004d
-#define AR7240_PHY_ID2 0xd041
-
-#define AR7240_MAX_VLANS 16
-
-#define sw_to_ar7240(_dev) container_of(_dev, struct ar7240sw, swdev)
-
-struct ar7240sw {
- struct mii_bus *mii_bus;
- struct switch_dev swdev;
- int num_ports;
- bool vlan;
- u16 vlan_id[AR7240_MAX_VLANS];
- u8 vlan_table[AR7240_MAX_VLANS];
- u8 vlan_tagged;
- u16 pvid[AR7240_NUM_PORTS];
- char buf[80];
-};
-
-struct ar7240sw_hw_stat {
- char string[ETH_GSTRING_LEN];
- int sizeof_stat;
- int reg;
-};
-
-static DEFINE_MUTEX(reg_mutex);
-
-static inline u32 ar7240sw_port_mask(struct ar7240sw *as, int port)
-{
- return BIT(port);
-}
-
-static inline u32 ar7240sw_port_mask_all(struct ar7240sw *as)
-{
- return BIT(as->swdev.ports) - 1;
-}
-
-static inline u32 ar7240sw_port_mask_but(struct ar7240sw *as, int port)
-{
- return ar7240sw_port_mask_all(as) & ~BIT(port);
-}
-
-static inline u16 mk_phy_addr(u32 reg)
-{
- return 0x17 & ((reg >> 4) | 0x10);
-}
-
-static inline u16 mk_phy_reg(u32 reg)
-{
- return (reg << 1) & 0x1e;
-}
-
-static inline u16 mk_high_addr(u32 reg)
-{
- return (reg >> 7) & 0x1ff;
-}
-
-static u32 __ar7240sw_reg_read(struct mii_bus *mii, u32 reg)
-{
- unsigned long flags;
- u16 phy_addr;
- u16 phy_reg;
- u32 hi, lo;
-
- reg = (reg & 0xfffffffc) >> 2;
- phy_addr = mk_phy_addr(reg);
- phy_reg = mk_phy_reg(reg);
-
- local_irq_save(flags);
- ag71xx_mdio_mii_write(mii->priv, 0x1f, 0x10, mk_high_addr(reg));
- lo = (u32) ag71xx_mdio_mii_read(mii->priv, phy_addr, phy_reg);
- hi = (u32) ag71xx_mdio_mii_read(mii->priv, phy_addr, phy_reg + 1);
- local_irq_restore(flags);
-
- return (hi << 16) | lo;
-}
-
-static void __ar7240sw_reg_write(struct mii_bus *mii, u32 reg, u32 val)
-{
- unsigned long flags;
- u16 phy_addr;
- u16 phy_reg;
-
- reg = (reg & 0xfffffffc) >> 2;
- phy_addr = mk_phy_addr(reg);
- phy_reg = mk_phy_reg(reg);
-
- local_irq_save(flags);
- ag71xx_mdio_mii_write(mii->priv, 0x1f, 0x10, mk_high_addr(reg));
- ag71xx_mdio_mii_write(mii->priv, phy_addr, phy_reg + 1, (val >> 16));
- ag71xx_mdio_mii_write(mii->priv, phy_addr, phy_reg, (val & 0xffff));
- local_irq_restore(flags);
-}
-
-static u32 ar7240sw_reg_read(struct mii_bus *mii, u32 reg_addr)
-{
- u32 ret;
-
- mutex_lock(®_mutex);
- ret = __ar7240sw_reg_read(mii, reg_addr);
- mutex_unlock(®_mutex);
-
- return ret;
-}
-
-static void ar7240sw_reg_write(struct mii_bus *mii, u32 reg_addr, u32 reg_val)
-{
- mutex_lock(®_mutex);
- __ar7240sw_reg_write(mii, reg_addr, reg_val);
- mutex_unlock(®_mutex);
-}
-
-static u32 ar7240sw_reg_rmw(struct mii_bus *mii, u32 reg, u32 mask, u32 val)
-{
- u32 t;
-
- mutex_lock(®_mutex);
- t = __ar7240sw_reg_read(mii, reg);
- t &= ~mask;
- t |= val;
- __ar7240sw_reg_write(mii, reg, t);
- mutex_unlock(®_mutex);
-
- return t;
-}
-
-static void ar7240sw_reg_set(struct mii_bus *mii, u32 reg, u32 val)
-{
- u32 t;
-
- mutex_lock(®_mutex);
- t = __ar7240sw_reg_read(mii, reg);
- t |= val;
- __ar7240sw_reg_write(mii, reg, t);
- mutex_unlock(®_mutex);
-}
-
-static int __ar7240sw_reg_wait(struct mii_bus *mii, u32 reg, u32 mask, u32 val,
- unsigned timeout)
-{
- int i;
-
- for (i = 0; i < timeout; i++) {
- u32 t;
-
- t = __ar7240sw_reg_read(mii, reg);
- if ((t & mask) == val)
- return 0;
-
- msleep(1);
- }
-
- return -ETIMEDOUT;
-}
-
-static int ar7240sw_reg_wait(struct mii_bus *mii, u32 reg, u32 mask, u32 val,
- unsigned timeout)
-{
- int ret;
-
- mutex_lock(®_mutex);
- ret = __ar7240sw_reg_wait(mii, reg, mask, val, timeout);
- mutex_unlock(®_mutex);
- return ret;
-}
-
-u16 ar7240sw_phy_read(struct mii_bus *mii, unsigned phy_addr,
- unsigned reg_addr)
-{
- u32 t, val = 0xffff;
- int err;
-
- if (phy_addr >= AR7240_NUM_PHYS)
- return 0xffff;
-
- mutex_lock(®_mutex);
- t = (reg_addr << AR7240_MDIO_CTRL_REG_ADDR_S) |
- (phy_addr << AR7240_MDIO_CTRL_PHY_ADDR_S) |
- AR7240_MDIO_CTRL_MASTER_EN |
- AR7240_MDIO_CTRL_BUSY |
- AR7240_MDIO_CTRL_CMD_READ;
-
- __ar7240sw_reg_write(mii, AR7240_REG_MDIO_CTRL, t);
- err = __ar7240sw_reg_wait(mii, AR7240_REG_MDIO_CTRL,
- AR7240_MDIO_CTRL_BUSY, 0, 5);
- if (!err)
- val = __ar7240sw_reg_read(mii, AR7240_REG_MDIO_CTRL);
- mutex_unlock(®_mutex);
-
- return val & AR7240_MDIO_CTRL_DATA_M;
-}
-
-int ar7240sw_phy_write(struct mii_bus *mii, unsigned phy_addr,
- unsigned reg_addr, u16 reg_val)
-{
- u32 t;
- int ret;
-
- if (phy_addr >= AR7240_NUM_PHYS)
- return -EINVAL;
-
- mutex_lock(®_mutex);
- t = (phy_addr << AR7240_MDIO_CTRL_PHY_ADDR_S) |
- (reg_addr << AR7240_MDIO_CTRL_REG_ADDR_S) |
- AR7240_MDIO_CTRL_MASTER_EN |
- AR7240_MDIO_CTRL_BUSY |
- AR7240_MDIO_CTRL_CMD_WRITE |
- reg_val;
-
- __ar7240sw_reg_write(mii, AR7240_REG_MDIO_CTRL, t);
- ret = __ar7240sw_reg_wait(mii, AR7240_REG_MDIO_CTRL,
- AR7240_MDIO_CTRL_BUSY, 0, 5);
- mutex_unlock(®_mutex);
-
- return ret;
-}
-
-static void ar7240sw_disable_port(struct ar7240sw *as, unsigned port)
-{
- ar7240sw_reg_write(as->mii_bus, AR7240_REG_PORT_CTRL(port),
- AR7240_PORT_CTRL_STATE_DISABLED);
-}
-
-static void ar7240sw_setup(struct ar7240sw *as)
-{
- struct mii_bus *mii = as->mii_bus;
-
- /* Enable CPU port, and disable mirror port */
- ar7240sw_reg_write(mii, AR7240_REG_CPU_PORT,
- AR7240_CPU_PORT_EN |
- (15 << AR7240_MIRROR_PORT_S));
-
- /* Setup TAG priority mapping */
- ar7240sw_reg_write(mii, AR7240_REG_TAG_PRIORITY, 0xfa50);
-
- /* Enable ARP frame acknowledge, aging, MAC replacing */
- ar7240sw_reg_write(mii, AR7240_REG_AT_CTRL,
- 0x2b /* 5 min age time */ |
- AR7240_AT_CTRL_AGE_EN |
- AR7240_AT_CTRL_ARP_EN |
- AR7240_AT_CTRL_LEARN_CHANGE);
-
- /* Enable Broadcast frames transmitted to the CPU */
- ar7240sw_reg_set(mii, AR7240_REG_FLOOD_MASK,
- AR7240_FLOOD_MASK_BROAD_TO_CPU);
-
- /* setup MTU */
- ar7240sw_reg_rmw(mii, AR7240_REG_GLOBAL_CTRL, AR7240_GLOBAL_CTRL_MTU_M,
- 1536);
-
- /* setup Service TAG */
- ar7240sw_reg_rmw(mii, AR7240_REG_SERVICE_TAG, AR7240_SERVICE_TAG_M, 0);
-}
-
-static int ar7240sw_reset(struct ar7240sw *as)
-{
- struct mii_bus *mii = as->mii_bus;
- int ret;
- int i;
-
- /* Set all ports to disabled state. */
- for (i = 0; i < AR7240_NUM_PORTS; i++)
- ar7240sw_disable_port(as, i);
-
- /* Wait for transmit queues to drain. */
- msleep(2);
-
- /* Reset the switch. */
- ar7240sw_reg_write(mii, AR7240_REG_MASK_CTRL,
- AR7240_MASK_CTRL_SOFT_RESET);
-
- ret = ar7240sw_reg_wait(mii, AR7240_REG_MASK_CTRL,
- AR7240_MASK_CTRL_SOFT_RESET, 0, 1000);
-
- ar7240sw_setup(as);
- return ret;
-}
-
-static void ar7240sw_setup_port(struct ar7240sw *as, unsigned port, u8 portmask)
-{
- struct mii_bus *mii = as->mii_bus;
- u32 ctrl;
- u32 vlan;
-
- ctrl = AR7240_PORT_CTRL_STATE_FORWARD | AR7240_PORT_CTRL_LEARN |
- AR7240_PORT_CTRL_SINGLE_VLAN;
-
- if (port == AR7240_PORT_CPU) {
- ar7240sw_reg_write(mii, AR7240_REG_PORT_STATUS(port),
- AR7240_PORT_STATUS_SPEED_1000 |
- AR7240_PORT_STATUS_TXFLOW |
- AR7240_PORT_STATUS_RXFLOW |
- AR7240_PORT_STATUS_TXMAC |
- AR7240_PORT_STATUS_RXMAC |
- AR7240_PORT_STATUS_DUPLEX);
- } else {
- ar7240sw_reg_write(mii, AR7240_REG_PORT_STATUS(port),
- AR7240_PORT_STATUS_LINK_AUTO);
- }
-
- /* Set the default VID for this port */
- if (as->vlan) {
- vlan = as->vlan_id[as->pvid[port]];
- vlan |= AR7240_PORT_VLAN_MODE_SECURE <<
- AR7240_PORT_VLAN_MODE_S;
- } else {
- vlan = port;
- vlan |= AR7240_PORT_VLAN_MODE_PORT_ONLY <<
- AR7240_PORT_VLAN_MODE_S;
- }
-
- if (as->vlan && (as->vlan_tagged & BIT(port))) {
- ctrl |= AR7240_PORT_CTRL_VLAN_MODE_ADD <<
- AR7240_PORT_CTRL_VLAN_MODE_S;
- } else {
- ctrl |= AR7240_PORT_CTRL_VLAN_MODE_STRIP <<
- AR7240_PORT_CTRL_VLAN_MODE_S;
- }
-
- if (!portmask) {
- if (port == AR7240_PORT_CPU)
- portmask = ar7240sw_port_mask_but(as, AR7240_PORT_CPU);
- else
- portmask = ar7240sw_port_mask(as, AR7240_PORT_CPU);
- }
-
- /* allow the port to talk to all other ports, but exclude its
- * own ID to prevent frames from being reflected back to the
- * port that they came from */
- portmask &= ar7240sw_port_mask_but(as, port);
-
- /* set default VID and and destination ports for this VLAN */
- vlan |= (portmask << AR7240_PORT_VLAN_DEST_PORTS_S);
-
- ar7240sw_reg_write(mii, AR7240_REG_PORT_CTRL(port), ctrl);
- ar7240sw_reg_write(mii, AR7240_REG_PORT_VLAN(port), vlan);
-}
-
-static int ar7240_set_addr(struct ar7240sw *as, u8 *addr)
-{
- struct mii_bus *mii = as->mii_bus;
- u32 t;
-
- t = (addr[4] << 8) | addr[5];
- ar7240sw_reg_write(mii, AR7240_REG_MAC_ADDR0, t);
-
- t = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
- ar7240sw_reg_write(mii, AR7240_REG_MAC_ADDR1, t);
-
- return 0;
-}
-
-static int
-ar7240_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
- struct switch_val *val)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- as->vlan_id[val->port_vlan] = val->value.i;
- return 0;
-}
-
-static int
-ar7240_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
- struct switch_val *val)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- val->value.i = as->vlan_id[val->port_vlan];
- return 0;
-}
-
-static int
-ar7240_set_pvid(struct switch_dev *dev, int port, int vlan)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
-
- /* make sure no invalid PVIDs get set */
-
- if (vlan >= dev->vlans)
- return -EINVAL;
-
- as->pvid[port] = vlan;
- return 0;
-}
-
-static int
-ar7240_get_pvid(struct switch_dev *dev, int port, int *vlan)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- *vlan = as->pvid[port];
- return 0;
-}
-
-static int
-ar7240_get_ports(struct switch_dev *dev, struct switch_val *val)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- u8 ports = as->vlan_table[val->port_vlan];
- int i;
-
- val->len = 0;
- for (i = 0; i < as->swdev.ports; i++) {
- struct switch_port *p;
-
- if (!(ports & (1 << i)))
- continue;
-
- p = &val->value.ports[val->len++];
- p->id = i;
- if (as->vlan_tagged & (1 << i))
- p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
- else
- p->flags = 0;
- }
- return 0;
-}
-
-static int
-ar7240_set_ports(struct switch_dev *dev, struct switch_val *val)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- u8 *vt = &as->vlan_table[val->port_vlan];
- int i, j;
-
- *vt = 0;
- for (i = 0; i < val->len; i++) {
- struct switch_port *p = &val->value.ports[i];
-
- if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
- as->vlan_tagged |= (1 << p->id);
- else {
- as->vlan_tagged &= ~(1 << p->id);
- as->pvid[p->id] = val->port_vlan;
-
- /* make sure that an untagged port does not
- * appear in other vlans */
- for (j = 0; j < AR7240_MAX_VLANS; j++) {
- if (j == val->port_vlan)
- continue;
- as->vlan_table[j] &= ~(1 << p->id);
- }
- }
-
- *vt |= 1 << p->id;
- }
- return 0;
-}
-
-static int
-ar7240_set_vlan(struct switch_dev *dev, const struct switch_attr *attr,
- struct switch_val *val)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- as->vlan = !!val->value.i;
- return 0;
-}
-
-static int
-ar7240_get_vlan(struct switch_dev *dev, const struct switch_attr *attr,
- struct switch_val *val)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- val->value.i = as->vlan;
- return 0;
-}
-
-static const char *
-ar7240_speed_str(u32 status)
-{
- u32 speed;
-
- speed = (status >> AR7240_PORT_STATUS_SPEED_S) &
- AR7240_PORT_STATUS_SPEED_M;
- switch (speed) {
- case AR7240_PORT_STATUS_SPEED_10:
- return "10baseT";
- case AR7240_PORT_STATUS_SPEED_100:
- return "100baseT";
- case AR7240_PORT_STATUS_SPEED_1000:
- return "1000baseT";
- }
-
- return "unknown";
-}
-
-static int
-ar7240_port_get_link(struct switch_dev *dev, const struct switch_attr *attr,
- struct switch_val *val)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- struct mii_bus *mii = as->mii_bus;
- u32 len;
- u32 status;
- int port;
-
- port = val->port_vlan;
-
- memset(as->buf, '\0', sizeof(as->buf));
- status = ar7240sw_reg_read(mii, AR7240_REG_PORT_STATUS(port));
-
- if (status & AR7240_PORT_STATUS_LINK_UP) {
- len = snprintf(as->buf, sizeof(as->buf),
- "port:%d link:up speed:%s %s-duplex %s%s%s",
- port,
- ar7240_speed_str(status),
- (status & AR7240_PORT_STATUS_DUPLEX) ?
- "full" : "half",
- (status & AR7240_PORT_STATUS_TXFLOW) ?
- "txflow ": "",
- (status & AR7240_PORT_STATUS_RXFLOW) ?
- "rxflow " : "",
- (status & AR7240_PORT_STATUS_LINK_AUTO) ?
- "auto ": "");
- } else {
- len = snprintf(as->buf, sizeof(as->buf),
- "port:%d link:down", port);
- }
-
- val->value.s = as->buf;
- val->len = len;
-
- return 0;
-}
-
-static void
-ar7240_vtu_op(struct ar7240sw *as, u32 op, u32 val)
-{
- struct mii_bus *mii = as->mii_bus;
-
- if (ar7240sw_reg_wait(mii, AR7240_REG_VTU, AR7240_VTU_ACTIVE, 0, 5))
- return;
-
- if ((op & AR7240_VTU_OP) == AR7240_VTU_OP_LOAD) {
- val &= AR7240_VTUDATA_MEMBER;
- val |= AR7240_VTUDATA_VALID;
- ar7240sw_reg_write(mii, AR7240_REG_VTU_DATA, val);
- }
- op |= AR7240_VTU_ACTIVE;
- ar7240sw_reg_write(mii, AR7240_REG_VTU, op);
-}
-
-static int
-ar7240_hw_apply(struct switch_dev *dev)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- u8 portmask[AR7240_NUM_PORTS];
- int i, j;
-
- /* flush all vlan translation unit entries */
- ar7240_vtu_op(as, AR7240_VTU_OP_FLUSH, 0);
-
- memset(portmask, 0, sizeof(portmask));
- if (as->vlan) {
- /* calculate the port destination masks and load vlans
- * into the vlan translation unit */
- for (j = 0; j < AR7240_MAX_VLANS; j++) {
- u8 vp = as->vlan_table[j];
-
- if (!vp)
- continue;
-
- for (i = 0; i < as->swdev.ports; i++) {
- u8 mask = (1 << i);
- if (vp & mask)
- portmask[i] |= vp & ~mask;
- }
-
- ar7240_vtu_op(as,
- AR7240_VTU_OP_LOAD |
- (as->vlan_id[j] << AR7240_VTU_VID_S),
- as->vlan_table[j]);
- }
- } else {
- /* vlan disabled:
- * isolate all ports, but connect them to the cpu port */
- for (i = 0; i < as->swdev.ports; i++) {
- if (i == AR7240_PORT_CPU)
- continue;
-
- portmask[i] = 1 << AR7240_PORT_CPU;
- portmask[AR7240_PORT_CPU] |= (1 << i);
- }
- }
-
- /* update the port destination mask registers and tag settings */
- for (i = 0; i < as->swdev.ports; i++)
- ar7240sw_setup_port(as, i, portmask[i]);
-
- return 0;
-}
-
-static int
-ar7240_reset_switch(struct switch_dev *dev)
-{
- struct ar7240sw *as = sw_to_ar7240(dev);
- ar7240sw_reset(as);
- return 0;
-}
-
-static struct switch_attr ar7240_globals[] = {
- {
- .type = SWITCH_TYPE_INT,
- .name = "enable_vlan",
- .description = "Enable VLAN mode",
- .set = ar7240_set_vlan,
- .get = ar7240_get_vlan,
- .max = 1
- },
-};
-
-static struct switch_attr ar7240_port[] = {
- {
- .type = SWITCH_TYPE_STRING,
- .name = "link",
- .description = "Get port link information",
- .max = 1,
- .set = NULL,
- .get = ar7240_port_get_link,
- },
-};
-
-static struct switch_attr ar7240_vlan[] = {
- {
- .type = SWITCH_TYPE_INT,
- .name = "vid",
- .description = "VLAN ID",
- .set = ar7240_set_vid,
- .get = ar7240_get_vid,
- .max = 4094,
- },
-};
-
-static const struct switch_dev_ops ar7240_ops = {
- .attr_global = {
- .attr = ar7240_globals,
- .n_attr = ARRAY_SIZE(ar7240_globals),
- },
- .attr_port = {
- .attr = ar7240_port,
- .n_attr = ARRAY_SIZE(ar7240_port),
- },
- .attr_vlan = {
- .attr = ar7240_vlan,
- .n_attr = ARRAY_SIZE(ar7240_vlan),
- },
- .get_port_pvid = ar7240_get_pvid,
- .set_port_pvid = ar7240_set_pvid,
- .get_vlan_ports = ar7240_get_ports,
- .set_vlan_ports = ar7240_set_ports,
- .apply_config = ar7240_hw_apply,
- .reset_switch = ar7240_reset_switch,
-};
-
-static struct ar7240sw *ar7240_probe(struct ag71xx *ag)
-{
- struct mii_bus *mii = ag->mii_bus;
- struct ar7240sw *as;
- struct switch_dev *swdev;
- u32 ctrl;
- u16 phy_id1;
- u16 phy_id2;
- u8 ver;
- int i;
-
- as = kzalloc(sizeof(*as), GFP_KERNEL);
- if (!as)
- return NULL;
-
- as->mii_bus = mii;
-
- ctrl = ar7240sw_reg_read(mii, AR7240_REG_MASK_CTRL);
-
- ver = (ctrl >> AR7240_MASK_CTRL_VERSION_S) & AR7240_MASK_CTRL_VERSION_M;
- if (ver != 1) {
- pr_err("%s: unsupported chip, ctrl=%08x\n",
- ag->dev->name, ctrl);
- return NULL;
- }
-
- phy_id1 = ar7240sw_phy_read(mii, 0, MII_PHYSID1);
- phy_id2 = ar7240sw_phy_read(mii, 0, MII_PHYSID2);
- if (phy_id1 != AR7240_PHY_ID1 || phy_id2 != AR7240_PHY_ID2) {
- pr_err("%s: unknown phy id '%04x:%04x'\n",
- ag->dev->name, phy_id1, phy_id2);
- return NULL;
- }
-
- swdev = &as->swdev;
- swdev->name = "AR7240 built-in switch";
- swdev->ports = AR7240_NUM_PORTS - 1;
- swdev->cpu_port = AR7240_PORT_CPU;
- swdev->vlans = AR7240_MAX_VLANS;
- swdev->ops = &ar7240_ops;
-
- if (register_switch(&as->swdev, ag->dev) < 0) {
- kfree(as);
- return NULL;
- }
-
- pr_info("%s: Found an AR7240 built-in switch\n", ag->dev->name);
-
- /* initialize defaults */
- for (i = 0; i < AR7240_MAX_VLANS; i++)
- as->vlan_id[i] = i;
-
- as->vlan_table[0] = ar7240sw_port_mask_all(as);
-
- return as;
-}
-
-static void link_function(struct work_struct *work) {
- struct ag71xx *ag = container_of(work, struct ag71xx, link_work.work);
- unsigned long flags;
- int i;
- int status = 0;
-
- for (i = 0; i < 4; i++) {
- int link = ar7240sw_phy_read(ag->mii_bus, i, MII_BMSR);
- if(link & BMSR_LSTATUS) {
- status = 1;
- break;
- }
- }
-
- spin_lock_irqsave(&ag->lock, flags);
- if(status != ag->link) {
- ag->link = status;
- ag71xx_link_adjust(ag);
- }
- spin_unlock_irqrestore(&ag->lock, flags);
-
- schedule_delayed_work(&ag->link_work, HZ / 2);
-}
-
-void ag71xx_ar7240_start(struct ag71xx *ag)
-{
- struct ar7240sw *as = ag->phy_priv;
-
- ar7240sw_reset(as);
-
- ag->speed = SPEED_1000;
- ag->duplex = 1;
-
- ar7240_set_addr(as, ag->dev->dev_addr);
- ar7240_hw_apply(&as->swdev);
-
- schedule_delayed_work(&ag->link_work, HZ / 10);
-}
-
-void ag71xx_ar7240_stop(struct ag71xx *ag)
-{
- cancel_delayed_work_sync(&ag->link_work);
-}
-
-int __devinit ag71xx_ar7240_init(struct ag71xx *ag)
-{
- struct ar7240sw *as;
-
- as = ar7240_probe(ag);
- if (!as)
- return -ENODEV;
-
- ag->phy_priv = as;
- ar7240sw_reset(as);
-
- INIT_DELAYED_WORK(&ag->link_work, link_function);
-
- return 0;
-}
-
-void ag71xx_ar7240_cleanup(struct ag71xx *ag)
-{
- struct ar7240sw *as = ag->phy_priv;
-
- if (!as)
- return;
-
- unregister_switch(&as->swdev);
- kfree(as);
- ag->phy_priv = NULL;
-}
projects / openwrt.git / blobdiff