--- /dev/null
+/*
+ * 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_VERSION_AR7240 0x01
+#define AR7240_MASK_CTRL_VERSION_AR934X 0x02
+#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_RESERVED BIT(19)
+#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 AR934X_PHY_ID1 0x004d
+#define AR934X_PHY_ID2 0xd042
+
+#define AR7240_MAX_VLANS 16
+
+#define AR934X_REG_OPER_MODE0 0x04
+#define AR934X_OPER_MODE0_MAC_GMII_EN BIT(6)
+#define AR934X_OPER_MODE0_PHY_MII_EN BIT(10)
+
+#define AR934X_REG_OPER_MODE1 0x08
+#define AR934X_REG_OPER_MODE1_PHY4_MII_EN BIT(28)
+
+#define AR934X_REG_PORT_BASE(_port) (0x100 + (_port) * 0x100)
+
+#define AR934X_REG_PORT_VLAN1(_port) (AR934X_REG_PORT_BASE((_port)) + 0x08)
+#define AR934X_PORT_VLAN1_DEFAULT_SVID_S 0
+#define AR934X_PORT_VLAN1_FORCE_DEFAULT_VID_EN BIT(12)
+#define AR934X_PORT_VLAN1_PORT_TLS_MODE BIT(13)
+#define AR934X_PORT_VLAN1_PORT_VLAN_PROP_EN BIT(14)
+#define AR934X_PORT_VLAN1_PORT_CLONE_EN BIT(15)
+#define AR934X_PORT_VLAN1_DEFAULT_CVID_S 16
+#define AR934X_PORT_VLAN1_FORCE_PORT_VLAN_EN BIT(28)
+#define AR934X_PORT_VLAN1_ING_PORT_PRI_S 29
+
+#define AR934X_REG_PORT_VLAN2(_port) (AR934X_REG_PORT_BASE((_port)) + 0x0c)
+#define AR934X_PORT_VLAN2_PORT_VID_MEM_S 16
+#define AR934X_PORT_VLAN2_8021Q_MODE_S 30
+#define AR934X_PORT_VLAN2_8021Q_MODE_PORT_ONLY 0
+#define AR934X_PORT_VLAN2_8021Q_MODE_PORT_FALLBACK 1
+#define AR934X_PORT_VLAN2_8021Q_MODE_VLAN_ONLY 2
+#define AR934X_PORT_VLAN2_8021Q_MODE_SECURE 3
+
+#define sw_to_ar7240(_dev) container_of(_dev, struct ar7240sw, swdev)
+
+struct ar7240sw_port_stat {
+ unsigned long rx_broadcast;
+ unsigned long rx_pause;
+ unsigned long rx_multicast;
+ unsigned long rx_fcs_error;
+ unsigned long rx_align_error;
+ unsigned long rx_runt;
+ unsigned long rx_fragments;
+ unsigned long rx_64byte;
+ unsigned long rx_128byte;
+ unsigned long rx_256byte;
+ unsigned long rx_512byte;
+ unsigned long rx_1024byte;
+ unsigned long rx_1518byte;
+ unsigned long rx_maxbyte;
+ unsigned long rx_toolong;
+ unsigned long rx_good_byte;
+ unsigned long rx_bad_byte;
+ unsigned long rx_overflow;
+ unsigned long filtered;
+
+ unsigned long tx_broadcast;
+ unsigned long tx_pause;
+ unsigned long tx_multicast;
+ unsigned long tx_underrun;
+ unsigned long tx_64byte;
+ unsigned long tx_128byte;
+ unsigned long tx_256byte;
+ unsigned long tx_512byte;
+ unsigned long tx_1024byte;
+ unsigned long tx_1518byte;
+ unsigned long tx_maxbyte;
+ unsigned long tx_oversize;
+ unsigned long tx_byte;
+ unsigned long tx_collision;
+ unsigned long tx_abortcol;
+ unsigned long tx_multicol;
+ unsigned long tx_singlecol;
+ unsigned long tx_excdefer;
+ unsigned long tx_defer;
+ unsigned long tx_xlatecol;
+};
+
+struct ar7240sw {
+ struct mii_bus *mii_bus;
+ struct ag71xx_switch_platform_data *swdata;
+ struct switch_dev swdev;
+ int num_ports;
+ u8 ver;
+ 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];
+
+ rwlock_t stats_lock;
+ struct ar7240sw_port_stat port_stats[AR7240_NUM_PORTS];
+};
+
+struct ar7240sw_hw_stat {
+ char string[ETH_GSTRING_LEN];
+ int sizeof_stat;
+ int reg;
+};
+
+static DEFINE_MUTEX(reg_mutex);
+
+static inline int sw_is_ar7240(struct ar7240sw *as)
+{
+ return as->ver == AR7240_MASK_CTRL_VERSION_AR7240;
+}
+
+static inline int sw_is_ar934x(struct ar7240sw *as)
+{
+ return as->ver == AR7240_MASK_CTRL_VERSION_AR934X;
+}
+
+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 int ar7240sw_capture_stats(struct ar7240sw *as)
+{
+ struct mii_bus *mii = as->mii_bus;
+ int port;
+ int ret;
+
+ write_lock(&as->stats_lock);
+
+ /* Capture the hardware statistics for all ports */
+ ar7240sw_reg_write(mii, AR7240_REG_MIB_FUNCTION0,
+ (AR7240_MIB_FUNC_CAPTURE << AR7240_MIB_FUNC_S));
+
+ /* Wait for the capturing to complete. */
+ ret = ar7240sw_reg_wait(mii, AR7240_REG_MIB_FUNCTION0,
+ AR7240_MIB_BUSY, 0, 10);
+
+ if (ret)
+ goto unlock;
+
+ for (port = 0; port < AR7240_NUM_PORTS; port++) {
+ unsigned int base;
+ struct ar7240sw_port_stat *stats;
+
+ base = AR7240_REG_STATS_BASE(port);
+ stats = &as->port_stats[port];
+
+#define READ_STAT(_r) ar7240sw_reg_read(mii, base + AR7240_STATS_ ## _r)
+
+ stats->rx_good_byte += READ_STAT(RXGOODBYTE);
+ stats->tx_byte += READ_STAT(TXBYTE);
+
+#undef READ_STAT
+ }
+
+ ret = 0;
+
+unlock:
+ write_unlock(&as->stats_lock);
+ 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,
+ AR7240_AT_CTRL_RESERVED |
+ 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 vid, mode;
+
+ 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) {
+ vid = as->vlan_id[as->pvid[port]];
+ mode = AR7240_PORT_VLAN_MODE_SECURE;
+ } else {
+ vid = port;
+ mode = AR7240_PORT_VLAN_MODE_PORT_ONLY;
+ }
+
+ 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);
+
+ ar7240sw_reg_write(mii, AR7240_REG_PORT_CTRL(port), ctrl);
+ if (sw_is_ar934x(as)) {
+ u32 vlan1, vlan2;
+
+ vlan1 = (vid << AR934X_PORT_VLAN1_DEFAULT_CVID_S);
+ vlan2 = (portmask << AR934X_PORT_VLAN2_PORT_VID_MEM_S) |
+ (mode << AR934X_PORT_VLAN2_8021Q_MODE_S);
+ ar7240sw_reg_write(mii, AR934X_REG_PORT_VLAN1(port), vlan1);
+ ar7240sw_reg_write(mii, AR934X_REG_PORT_VLAN2(port), vlan2);
+ } else {
+ u32 vlan;
+
+ vlan = vid | (mode << AR7240_PORT_VLAN_MODE_S) |
+ (portmask << AR7240_PORT_VLAN_DEST_PORTS_S);
+
+ 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 int
+ar7240_get_port_link(struct switch_dev *dev, int port,
+ struct switch_port_link *link)
+{
+ struct ar7240sw *as = sw_to_ar7240(dev);
+ struct mii_bus *mii = as->mii_bus;
+ u32 status;
+
+ if (port > AR7240_NUM_PORTS)
+ return -EINVAL;
+
+ status = ar7240sw_reg_read(mii, AR7240_REG_PORT_STATUS(port));
+
+ link->link = !!(status & AR7240_PORT_STATUS_LINK_UP);
+ link->aneg = !!(status & AR7240_PORT_STATUS_LINK_AUTO);
+ link->duplex = !!(status & AR7240_PORT_STATUS_DUPLEX);
+ link->tx_flow = !!(status & AR7240_PORT_STATUS_TXFLOW);
+ link->rx_flow = !!(status & AR7240_PORT_STATUS_RXFLOW);
+ switch (status & AR7240_PORT_STATUS_SPEED_M) {
+ case AR7240_PORT_STATUS_SPEED_10:
+ link->speed = SWITCH_PORT_SPEED_10;
+ break;
+ case AR7240_PORT_STATUS_SPEED_100:
+ link->speed = SWITCH_PORT_SPEED_100;
+ break;
+ case AR7240_PORT_STATUS_SPEED_1000:
+ link->speed = SWITCH_PORT_SPEED_1000;
+ break;
+ }
+
+ return 0;
+}
+
+static int
+ar7240_get_port_stats(struct switch_dev *dev, int port,
+ struct switch_port_stats *stats)
+{
+ struct ar7240sw *as = sw_to_ar7240(dev);
+
+ if (port > AR7240_NUM_PORTS)
+ return -EINVAL;
+
+ ar7240sw_capture_stats(as);
+
+ read_lock(&as->stats_lock);
+ stats->rx_bytes = as->port_stats[port].rx_good_byte;
+ stats->tx_bytes = as->port_stats[port].tx_byte;
+ read_unlock(&as->stats_lock);
+
+ 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,
+ .get_port_link = ar7240_get_port_link,
+ .get_port_stats = ar7240_get_port_stats,
+};
+
+static struct ar7240sw *ar7240_probe(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ struct mii_bus *mii = ag->mii_bus;
+ struct ar7240sw *as;
+ struct switch_dev *swdev;
+ u32 ctrl;
+ u16 phy_id1;
+ u16 phy_id2;
+ int i;
+
+ 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) &&
+ (phy_id1 != AR934X_PHY_ID1 || phy_id2 != AR934X_PHY_ID2)) {
+ pr_err("%s: unknown phy id '%04x:%04x'\n",
+ ag->dev->name, phy_id1, phy_id2);
+ return NULL;
+ }
+
+ as = kzalloc(sizeof(*as), GFP_KERNEL);
+ if (!as)
+ return NULL;
+
+ as->mii_bus = mii;
+ as->swdata = pdata->switch_data;
+
+ swdev = &as->swdev;
+
+ ctrl = ar7240sw_reg_read(mii, AR7240_REG_MASK_CTRL);
+ as->ver = (ctrl >> AR7240_MASK_CTRL_VERSION_S) &
+ AR7240_MASK_CTRL_VERSION_M;
+
+ if (sw_is_ar7240(as)) {
+ swdev->name = "AR7240/AR9330 built-in switch";
+ } else if (sw_is_ar934x(as)) {
+ swdev->name = "AR934X built-in switch";
+
+ if (pdata->phy_if_mode == PHY_INTERFACE_MODE_GMII) {
+ ar7240sw_reg_set(mii, AR934X_REG_OPER_MODE0,
+ AR934X_OPER_MODE0_MAC_GMII_EN);
+ } else if (pdata->phy_if_mode == PHY_INTERFACE_MODE_MII) {
+ ar7240sw_reg_set(mii, AR934X_REG_OPER_MODE0,
+ AR934X_OPER_MODE0_PHY_MII_EN);
+ } else {
+ pr_err("%s: invalid PHY interface mode\n",
+ ag->dev->name);
+ goto err_free;
+ }
+
+ if (as->swdata->phy4_mii_en)
+ ar7240sw_reg_set(mii, AR934X_REG_OPER_MODE1,
+ AR934X_REG_OPER_MODE1_PHY4_MII_EN);
+ } else {
+ pr_err("%s: unsupported chip, ctrl=%08x\n",
+ ag->dev->name, ctrl);
+ goto err_free;
+ }
+
+ 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)
+ goto err_free;
+
+ pr_info("%s: Found an %s\n", ag->dev->name, swdev->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;
+
+err_free:
+ kfree(as);
+ return NULL;
+}
+
+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);
+
+ rwlock_init(&as->stats_lock);
+ 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