/* * ar8216.c: AR8216 switch driver * * Copyright (C) 2009 Felix Fietkau * Copyright (C) 2011-2012 Gabor Juhos * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ar8216.h" /* size of the vlan table */ #define AR8X16_MAX_VLANS 128 #define AR8X16_PROBE_RETRIES 10 #define AR8X16_MAX_PORTS 8 #define AR8XXX_MIB_WORK_DELAY 2000 /* msecs */ struct ar8216_priv; #define AR8XXX_CAP_GIGE BIT(0) #define AR8XXX_CAP_MIB_COUNTERS BIT(1) enum { AR8XXX_VER_AR8216 = 0x01, AR8XXX_VER_AR8236 = 0x03, AR8XXX_VER_AR8316 = 0x10, AR8XXX_VER_AR8327 = 0x12, }; struct ar8xxx_mib_desc { unsigned int size; unsigned int offset; const char *name; }; struct ar8xxx_chip { unsigned long caps; int (*hw_init)(struct ar8216_priv *priv); void (*init_globals)(struct ar8216_priv *priv); void (*init_port)(struct ar8216_priv *priv, int port); void (*setup_port)(struct ar8216_priv *priv, int port, u32 egress, u32 ingress, u32 members, u32 pvid); u32 (*read_port_status)(struct ar8216_priv *priv, int port); int (*atu_flush)(struct ar8216_priv *priv); void (*vtu_flush)(struct ar8216_priv *priv); void (*vtu_load_vlan)(struct ar8216_priv *priv, u32 vid, u32 port_mask); const struct ar8xxx_mib_desc *mib_decs; unsigned num_mibs; }; struct ar8216_priv { struct switch_dev dev; struct mii_bus *mii_bus; struct phy_device *phy; u32 (*read)(struct ar8216_priv *priv, int reg); void (*write)(struct ar8216_priv *priv, int reg, u32 val); const struct net_device_ops *ndo_old; struct net_device_ops ndo; struct mutex reg_mutex; u8 chip_ver; u8 chip_rev; const struct ar8xxx_chip *chip; bool initialized; bool port4_phy; char buf[2048]; bool init; bool mii_lo_first; struct mutex mib_lock; struct delayed_work mib_work; int mib_next_port; u64 *mib_stats; /* all fields below are cleared on reset */ bool vlan; u16 vlan_id[AR8X16_MAX_VLANS]; u8 vlan_table[AR8X16_MAX_VLANS]; u8 vlan_tagged; u16 pvid[AR8X16_MAX_PORTS]; }; #define MIB_DESC(_s , _o, _n) \ { \ .size = (_s), \ .offset = (_o), \ .name = (_n), \ } static const struct ar8xxx_mib_desc ar8216_mibs[] = { MIB_DESC(1, AR8216_STATS_RXBROAD, "RxBroad"), MIB_DESC(1, AR8216_STATS_RXPAUSE, "RxPause"), MIB_DESC(1, AR8216_STATS_RXMULTI, "RxMulti"), MIB_DESC(1, AR8216_STATS_RXFCSERR, "RxFcsErr"), MIB_DESC(1, AR8216_STATS_RXALIGNERR, "RxAlignErr"), MIB_DESC(1, AR8216_STATS_RXRUNT, "RxRunt"), MIB_DESC(1, AR8216_STATS_RXFRAGMENT, "RxFragment"), MIB_DESC(1, AR8216_STATS_RX64BYTE, "Rx64Byte"), MIB_DESC(1, AR8216_STATS_RX128BYTE, "Rx128Byte"), MIB_DESC(1, AR8216_STATS_RX256BYTE, "Rx256Byte"), MIB_DESC(1, AR8216_STATS_RX512BYTE, "Rx512Byte"), MIB_DESC(1, AR8216_STATS_RX1024BYTE, "Rx1024Byte"), MIB_DESC(1, AR8216_STATS_RXMAXBYTE, "RxMaxByte"), MIB_DESC(1, AR8216_STATS_RXTOOLONG, "RxTooLong"), MIB_DESC(2, AR8216_STATS_RXGOODBYTE, "RxGoodByte"), MIB_DESC(2, AR8216_STATS_RXBADBYTE, "RxBadByte"), MIB_DESC(1, AR8216_STATS_RXOVERFLOW, "RxOverFlow"), MIB_DESC(1, AR8216_STATS_FILTERED, "Filtered"), MIB_DESC(1, AR8216_STATS_TXBROAD, "TxBroad"), MIB_DESC(1, AR8216_STATS_TXPAUSE, "TxPause"), MIB_DESC(1, AR8216_STATS_TXMULTI, "TxMulti"), MIB_DESC(1, AR8216_STATS_TXUNDERRUN, "TxUnderRun"), MIB_DESC(1, AR8216_STATS_TX64BYTE, "Tx64Byte"), MIB_DESC(1, AR8216_STATS_TX128BYTE, "Tx128Byte"), MIB_DESC(1, AR8216_STATS_TX256BYTE, "Tx256Byte"), MIB_DESC(1, AR8216_STATS_TX512BYTE, "Tx512Byte"), MIB_DESC(1, AR8216_STATS_TX1024BYTE, "Tx1024Byte"), MIB_DESC(1, AR8216_STATS_TXMAXBYTE, "TxMaxByte"), MIB_DESC(1, AR8216_STATS_TXOVERSIZE, "TxOverSize"), MIB_DESC(2, AR8216_STATS_TXBYTE, "TxByte"), MIB_DESC(1, AR8216_STATS_TXCOLLISION, "TxCollision"), MIB_DESC(1, AR8216_STATS_TXABORTCOL, "TxAbortCol"), MIB_DESC(1, AR8216_STATS_TXMULTICOL, "TxMultiCol"), MIB_DESC(1, AR8216_STATS_TXSINGLECOL, "TxSingleCol"), MIB_DESC(1, AR8216_STATS_TXEXCDEFER, "TxExcDefer"), MIB_DESC(1, AR8216_STATS_TXDEFER, "TxDefer"), MIB_DESC(1, AR8216_STATS_TXLATECOL, "TxLateCol"), }; static const struct ar8xxx_mib_desc ar8236_mibs[] = { MIB_DESC(1, AR8236_STATS_RXBROAD, "RxBroad"), MIB_DESC(1, AR8236_STATS_RXPAUSE, "RxPause"), MIB_DESC(1, AR8236_STATS_RXMULTI, "RxMulti"), MIB_DESC(1, AR8236_STATS_RXFCSERR, "RxFcsErr"), MIB_DESC(1, AR8236_STATS_RXALIGNERR, "RxAlignErr"), MIB_DESC(1, AR8236_STATS_RXRUNT, "RxRunt"), MIB_DESC(1, AR8236_STATS_RXFRAGMENT, "RxFragment"), MIB_DESC(1, AR8236_STATS_RX64BYTE, "Rx64Byte"), MIB_DESC(1, AR8236_STATS_RX128BYTE, "Rx128Byte"), MIB_DESC(1, AR8236_STATS_RX256BYTE, "Rx256Byte"), MIB_DESC(1, AR8236_STATS_RX512BYTE, "Rx512Byte"), MIB_DESC(1, AR8236_STATS_RX1024BYTE, "Rx1024Byte"), MIB_DESC(1, AR8236_STATS_RX1518BYTE, "Rx1518Byte"), MIB_DESC(1, AR8236_STATS_RXMAXBYTE, "RxMaxByte"), MIB_DESC(1, AR8236_STATS_RXTOOLONG, "RxTooLong"), MIB_DESC(2, AR8236_STATS_RXGOODBYTE, "RxGoodByte"), MIB_DESC(2, AR8236_STATS_RXBADBYTE, "RxBadByte"), MIB_DESC(1, AR8236_STATS_RXOVERFLOW, "RxOverFlow"), MIB_DESC(1, AR8236_STATS_FILTERED, "Filtered"), MIB_DESC(1, AR8236_STATS_TXBROAD, "TxBroad"), MIB_DESC(1, AR8236_STATS_TXPAUSE, "TxPause"), MIB_DESC(1, AR8236_STATS_TXMULTI, "TxMulti"), MIB_DESC(1, AR8236_STATS_TXUNDERRUN, "TxUnderRun"), MIB_DESC(1, AR8236_STATS_TX64BYTE, "Tx64Byte"), MIB_DESC(1, AR8236_STATS_TX128BYTE, "Tx128Byte"), MIB_DESC(1, AR8236_STATS_TX256BYTE, "Tx256Byte"), MIB_DESC(1, AR8236_STATS_TX512BYTE, "Tx512Byte"), MIB_DESC(1, AR8236_STATS_TX1024BYTE, "Tx1024Byte"), MIB_DESC(1, AR8236_STATS_TX1518BYTE, "Tx1518Byte"), MIB_DESC(1, AR8236_STATS_TXMAXBYTE, "TxMaxByte"), MIB_DESC(1, AR8236_STATS_TXOVERSIZE, "TxOverSize"), MIB_DESC(2, AR8236_STATS_TXBYTE, "TxByte"), MIB_DESC(1, AR8236_STATS_TXCOLLISION, "TxCollision"), MIB_DESC(1, AR8236_STATS_TXABORTCOL, "TxAbortCol"), MIB_DESC(1, AR8236_STATS_TXMULTICOL, "TxMultiCol"), MIB_DESC(1, AR8236_STATS_TXSINGLECOL, "TxSingleCol"), MIB_DESC(1, AR8236_STATS_TXEXCDEFER, "TxExcDefer"), MIB_DESC(1, AR8236_STATS_TXDEFER, "TxDefer"), MIB_DESC(1, AR8236_STATS_TXLATECOL, "TxLateCol"), }; static inline struct ar8216_priv * swdev_to_ar8216(struct switch_dev *swdev) { return container_of(swdev, struct ar8216_priv, dev); } static inline bool ar8xxx_has_gige(struct ar8216_priv *priv) { return priv->chip->caps & AR8XXX_CAP_GIGE; } static inline bool ar8xxx_has_mib_counters(struct ar8216_priv *priv) { return priv->chip->caps & AR8XXX_CAP_MIB_COUNTERS; } static inline bool chip_is_ar8216(struct ar8216_priv *priv) { return priv->chip_ver == AR8XXX_VER_AR8216; } static inline bool chip_is_ar8236(struct ar8216_priv *priv) { return priv->chip_ver == AR8XXX_VER_AR8236; } static inline bool chip_is_ar8316(struct ar8216_priv *priv) { return priv->chip_ver == AR8XXX_VER_AR8316; } static inline bool chip_is_ar8327(struct ar8216_priv *priv) { return priv->chip_ver == AR8XXX_VER_AR8327; } static inline void split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page) { regaddr >>= 1; *r1 = regaddr & 0x1e; regaddr >>= 5; *r2 = regaddr & 0x7; regaddr >>= 3; *page = regaddr & 0x1ff; } static u32 ar8216_mii_read(struct ar8216_priv *priv, int reg) { struct mii_bus *bus = priv->mii_bus; u16 r1, r2, page; u16 lo, hi; split_addr((u32) reg, &r1, &r2, &page); mutex_lock(&bus->mdio_lock); bus->write(bus, 0x18, 0, page); usleep_range(1000, 2000); /* wait for the page switch to propagate */ lo = bus->read(bus, 0x10 | r2, r1); hi = bus->read(bus, 0x10 | r2, r1 + 1); mutex_unlock(&bus->mdio_lock); return (hi << 16) | lo; } static void ar8216_mii_write(struct ar8216_priv *priv, int reg, u32 val) { struct mii_bus *bus = priv->mii_bus; u16 r1, r2, r3; u16 lo, hi; split_addr((u32) reg, &r1, &r2, &r3); lo = val & 0xffff; hi = (u16) (val >> 16); mutex_lock(&bus->mdio_lock); bus->write(bus, 0x18, 0, r3); usleep_range(1000, 2000); /* wait for the page switch to propagate */ if (priv->mii_lo_first) { bus->write(bus, 0x10 | r2, r1, lo); bus->write(bus, 0x10 | r2, r1 + 1, hi); } else { bus->write(bus, 0x10 | r2, r1 + 1, hi); bus->write(bus, 0x10 | r2, r1, lo); } mutex_unlock(&bus->mdio_lock); } static void ar8216_phy_dbg_write(struct ar8216_priv *priv, int phy_addr, u16 dbg_addr, u16 dbg_data) { struct mii_bus *bus = priv->mii_bus; mutex_lock(&bus->mdio_lock); bus->write(bus, phy_addr, MII_ATH_DBG_ADDR, dbg_addr); bus->write(bus, phy_addr, MII_ATH_DBG_DATA, dbg_data); mutex_unlock(&bus->mdio_lock); } static void ar8216_phy_mmd_write(struct ar8216_priv *priv, int phy_addr, u16 addr, u16 data) { struct mii_bus *bus = priv->mii_bus; mutex_lock(&bus->mdio_lock); bus->write(bus, phy_addr, MII_ATH_MMD_ADDR, addr); bus->write(bus, phy_addr, MII_ATH_MMD_DATA, data); mutex_unlock(&bus->mdio_lock); } static u32 ar8216_rmw(struct ar8216_priv *priv, int reg, u32 mask, u32 val) { u32 v; lockdep_assert_held(&priv->reg_mutex); v = priv->read(priv, reg); v &= ~mask; v |= val; priv->write(priv, reg, v); return v; } static inline void ar8216_reg_set(struct ar8216_priv *priv, int reg, u32 val) { u32 v; lockdep_assert_held(&priv->reg_mutex); v = priv->read(priv, reg); v |= val; priv->write(priv, reg, v); } static int ar8216_reg_wait(struct ar8216_priv *priv, u32 reg, u32 mask, u32 val, unsigned timeout) { int i; for (i = 0; i < timeout; i++) { u32 t; t = priv->read(priv, reg); if ((t & mask) == val) return 0; usleep_range(1000, 2000); } return -ETIMEDOUT; } static int ar8216_mib_op(struct ar8216_priv *priv, u32 op) { unsigned mib_func; int ret; lockdep_assert_held(&priv->mib_lock); if (chip_is_ar8327(priv)) mib_func = AR8327_REG_MIB_FUNC; else mib_func = AR8216_REG_MIB_FUNC; mutex_lock(&priv->reg_mutex); /* Capture the hardware statistics for all ports */ ar8216_rmw(priv, mib_func, AR8216_MIB_FUNC, (op << AR8216_MIB_FUNC_S)); mutex_unlock(&priv->reg_mutex); /* Wait for the capturing to complete. */ ret = ar8216_reg_wait(priv, mib_func, AR8216_MIB_BUSY, 0, 10); if (ret) goto out; ret = 0; out: return ret; } static int ar8216_mib_capture(struct ar8216_priv *priv) { return ar8216_mib_op(priv, AR8216_MIB_FUNC_CAPTURE); } static int ar8216_mib_flush(struct ar8216_priv *priv) { return ar8216_mib_op(priv, AR8216_MIB_FUNC_FLUSH); } static void ar8216_mib_fetch_port_stat(struct ar8216_priv *priv, int port, bool flush) { unsigned int base; u64 *mib_stats; int i; WARN_ON(port >= priv->dev.ports); lockdep_assert_held(&priv->mib_lock); if (chip_is_ar8327(priv)) base = AR8327_REG_PORT_STATS_BASE(port); else if (chip_is_ar8236(priv) || chip_is_ar8316(priv)) base = AR8236_REG_PORT_STATS_BASE(port); else base = AR8216_REG_PORT_STATS_BASE(port); mib_stats = &priv->mib_stats[port * priv->chip->num_mibs]; for (i = 0; i < priv->chip->num_mibs; i++) { const struct ar8xxx_mib_desc *mib; u64 t; mib = &priv->chip->mib_decs[i]; t = priv->read(priv, base + mib->offset); if (mib->size == 2) { u64 hi; hi = priv->read(priv, base + mib->offset + 4); t |= hi << 32; } if (flush) mib_stats[i] = 0; else mib_stats[i] += t; } } static void ar8216_read_port_link(struct ar8216_priv *priv, int port, struct switch_port_link *link) { u32 status; u32 speed; memset(link, '\0', sizeof(*link)); status = priv->chip->read_port_status(priv, port); link->aneg = !!(status & AR8216_PORT_STATUS_LINK_AUTO); if (link->aneg) { link->link = !!(status & AR8216_PORT_STATUS_LINK_UP); if (!link->link) return; } else { link->link = true; } link->duplex = !!(status & AR8216_PORT_STATUS_DUPLEX); link->tx_flow = !!(status & AR8216_PORT_STATUS_TXFLOW); link->rx_flow = !!(status & AR8216_PORT_STATUS_RXFLOW); speed = (status & AR8216_PORT_STATUS_SPEED) >> AR8216_PORT_STATUS_SPEED_S; switch (speed) { case AR8216_PORT_SPEED_10M: link->speed = SWITCH_PORT_SPEED_10; break; case AR8216_PORT_SPEED_100M: link->speed = SWITCH_PORT_SPEED_100; break; case AR8216_PORT_SPEED_1000M: link->speed = SWITCH_PORT_SPEED_1000; break; default: link->speed = SWITCH_PORT_SPEED_UNKNOWN; break; } } static struct sk_buff * ar8216_mangle_tx(struct net_device *dev, struct sk_buff *skb) { struct ar8216_priv *priv = dev->phy_ptr; unsigned char *buf; if (unlikely(!priv)) goto error; if (!priv->vlan) goto send; if (unlikely(skb_headroom(skb) < 2)) { if (pskb_expand_head(skb, 2, 0, GFP_ATOMIC) < 0) goto error; } buf = skb_push(skb, 2); buf[0] = 0x10; buf[1] = 0x80; send: return skb; error: dev_kfree_skb_any(skb); return NULL; } static void ar8216_mangle_rx(struct net_device *dev, struct sk_buff *skb) { struct ar8216_priv *priv; unsigned char *buf; int port, vlan; priv = dev->phy_ptr; if (!priv) return; /* don't strip the header if vlan mode is disabled */ if (!priv->vlan) return; /* strip header, get vlan id */ buf = skb->data; skb_pull(skb, 2); /* check for vlan header presence */ if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00)) return; port = buf[0] & 0xf; /* no need to fix up packets coming from a tagged source */ if (priv->vlan_tagged & (1 << port)) return; /* lookup port vid from local table, the switch passes an invalid vlan id */ vlan = priv->vlan_id[priv->pvid[port]]; buf[14 + 2] &= 0xf0; buf[14 + 2] |= vlan >> 8; buf[15 + 2] = vlan & 0xff; } static int ar8216_wait_bit(struct ar8216_priv *priv, int reg, u32 mask, u32 val) { int timeout = 20; u32 t = 0; while (1) { t = priv->read(priv, reg); if ((t & mask) == val) return 0; if (timeout-- <= 0) break; udelay(10); } pr_err("ar8216: timeout on reg %08x: %08x & %08x != %08x\n", (unsigned int) reg, t, mask, val); return -ETIMEDOUT; } static void ar8216_vtu_op(struct ar8216_priv *priv, u32 op, u32 val) { if (ar8216_wait_bit(priv, AR8216_REG_VTU, AR8216_VTU_ACTIVE, 0)) return; if ((op & AR8216_VTU_OP) == AR8216_VTU_OP_LOAD) { val &= AR8216_VTUDATA_MEMBER; val |= AR8216_VTUDATA_VALID; priv->write(priv, AR8216_REG_VTU_DATA, val); } op |= AR8216_VTU_ACTIVE; priv->write(priv, AR8216_REG_VTU, op); } static void ar8216_vtu_flush(struct ar8216_priv *priv) { ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0); } static void ar8216_vtu_load_vlan(struct ar8216_priv *priv, u32 vid, u32 port_mask) { u32 op; op = AR8216_VTU_OP_LOAD | (vid << AR8216_VTU_VID_S); ar8216_vtu_op(priv, op, port_mask); } static int ar8216_atu_flush(struct ar8216_priv *priv) { int ret; ret = ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0); if (!ret) priv->write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH); return ret; } static u32 ar8216_read_port_status(struct ar8216_priv *priv, int port) { return priv->read(priv, AR8216_REG_PORT_STATUS(port)); } static void ar8216_setup_port(struct ar8216_priv *priv, int port, u32 egress, u32 ingress, u32 members, u32 pvid) { u32 header; if (chip_is_ar8216(priv) && priv->vlan && port == AR8216_PORT_CPU) header = AR8216_PORT_CTRL_HEADER; else header = 0; ar8216_rmw(priv, AR8216_REG_PORT_CTRL(port), AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE | AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE | AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK, AR8216_PORT_CTRL_LEARN | header | (egress << AR8216_PORT_CTRL_VLAN_MODE_S) | (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S)); ar8216_rmw(priv, AR8216_REG_PORT_VLAN(port), AR8216_PORT_VLAN_DEST_PORTS | AR8216_PORT_VLAN_MODE | AR8216_PORT_VLAN_DEFAULT_ID, (members << AR8216_PORT_VLAN_DEST_PORTS_S) | (ingress << AR8216_PORT_VLAN_MODE_S) | (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S)); } static int ar8216_hw_init(struct ar8216_priv *priv) { return 0; } static void ar8216_init_globals(struct ar8216_priv *priv) { /* standard atheros magic */ priv->write(priv, 0x38, 0xc000050e); ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, AR8216_GCTRL_MTU, 1518 + 8 + 2); } static void ar8216_init_port(struct ar8216_priv *priv, int port) { /* Enable port learning and tx */ priv->write(priv, AR8216_REG_PORT_CTRL(port), AR8216_PORT_CTRL_LEARN | (4 << AR8216_PORT_CTRL_STATE_S)); priv->write(priv, AR8216_REG_PORT_VLAN(port), 0); if (port == AR8216_PORT_CPU) { priv->write(priv, AR8216_REG_PORT_STATUS(port), AR8216_PORT_STATUS_LINK_UP | (ar8xxx_has_gige(priv) ? AR8216_PORT_SPEED_1000M : AR8216_PORT_SPEED_100M) | AR8216_PORT_STATUS_TXMAC | AR8216_PORT_STATUS_RXMAC | (chip_is_ar8316(priv) ? AR8216_PORT_STATUS_RXFLOW : 0) | (chip_is_ar8316(priv) ? AR8216_PORT_STATUS_TXFLOW : 0) | AR8216_PORT_STATUS_DUPLEX); } else { priv->write(priv, AR8216_REG_PORT_STATUS(port), AR8216_PORT_STATUS_LINK_AUTO); } } static const struct ar8xxx_chip ar8216_chip = { .caps = AR8XXX_CAP_MIB_COUNTERS, .hw_init = ar8216_hw_init, .init_globals = ar8216_init_globals, .init_port = ar8216_init_port, .setup_port = ar8216_setup_port, .read_port_status = ar8216_read_port_status, .atu_flush = ar8216_atu_flush, .vtu_flush = ar8216_vtu_flush, .vtu_load_vlan = ar8216_vtu_load_vlan, .num_mibs = ARRAY_SIZE(ar8216_mibs), .mib_decs = ar8216_mibs, }; static void ar8236_setup_port(struct ar8216_priv *priv, int port, u32 egress, u32 ingress, u32 members, u32 pvid) { ar8216_rmw(priv, AR8216_REG_PORT_CTRL(port), AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE | AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE | AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK, AR8216_PORT_CTRL_LEARN | (egress << AR8216_PORT_CTRL_VLAN_MODE_S) | (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S)); ar8216_rmw(priv, AR8236_REG_PORT_VLAN(port), AR8236_PORT_VLAN_DEFAULT_ID, (pvid << AR8236_PORT_VLAN_DEFAULT_ID_S)); ar8216_rmw(priv, AR8236_REG_PORT_VLAN2(port), AR8236_PORT_VLAN2_VLAN_MODE | AR8236_PORT_VLAN2_MEMBER, (ingress << AR8236_PORT_VLAN2_VLAN_MODE_S) | (members << AR8236_PORT_VLAN2_MEMBER_S)); } static int ar8236_hw_init(struct ar8216_priv *priv) { int i; struct mii_bus *bus; if (priv->initialized) return 0; /* Initialize the PHYs */ bus = priv->mii_bus; for (i = 0; i < 5; i++) { mdiobus_write(bus, i, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE); } msleep(1000); priv->initialized = true; return 0; } static void ar8236_init_globals(struct ar8216_priv *priv) { /* enable jumbo frames */ ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, AR8316_GCTRL_MTU, 9018 + 8 + 2); /* Enable MIB counters */ ar8216_rmw(priv, AR8216_REG_MIB_FUNC, AR8216_MIB_FUNC | AR8236_MIB_EN, (AR8216_MIB_FUNC_NO_OP << AR8216_MIB_FUNC_S) | AR8236_MIB_EN); } static const struct ar8xxx_chip ar8236_chip = { .caps = AR8XXX_CAP_MIB_COUNTERS, .hw_init = ar8236_hw_init, .init_globals = ar8236_init_globals, .init_port = ar8216_init_port, .setup_port = ar8236_setup_port, .read_port_status = ar8216_read_port_status, .atu_flush = ar8216_atu_flush, .vtu_flush = ar8216_vtu_flush, .vtu_load_vlan = ar8216_vtu_load_vlan, .num_mibs = ARRAY_SIZE(ar8236_mibs), .mib_decs = ar8236_mibs, }; static int ar8316_hw_init(struct ar8216_priv *priv) { int i; u32 val, newval; struct mii_bus *bus; val = priv->read(priv, AR8316_REG_POSTRIP); if (priv->phy->interface == PHY_INTERFACE_MODE_RGMII) { if (priv->port4_phy) { /* value taken from Ubiquiti RouterStation Pro */ newval = 0x81461bea; printk(KERN_INFO "ar8316: Using port 4 as PHY\n"); } else { newval = 0x01261be2; printk(KERN_INFO "ar8316: Using port 4 as switch port\n"); } } else if (priv->phy->interface == PHY_INTERFACE_MODE_GMII) { /* value taken from AVM Fritz!Box 7390 sources */ newval = 0x010e5b71; } else { /* no known value for phy interface */ printk(KERN_ERR "ar8316: unsupported mii mode: %d.\n", priv->phy->interface); return -EINVAL; } if (val == newval) goto out; priv->write(priv, AR8316_REG_POSTRIP, newval); /* Initialize the ports */ bus = priv->mii_bus; for (i = 0; i < 5; i++) { if ((i == 4) && priv->port4_phy && priv->phy->interface == PHY_INTERFACE_MODE_RGMII) { /* work around for phy4 rgmii mode */ ar8216_phy_dbg_write(priv, i, 0x12, 0x480c); /* rx delay */ ar8216_phy_dbg_write(priv, i, 0x0, 0x824e); /* tx delay */ ar8216_phy_dbg_write(priv, i, 0x5, 0x3d47); msleep(1000); } /* initialize the port itself */ mdiobus_write(bus, i, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); mdiobus_write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL); mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE); } msleep(1000); out: priv->initialized = true; return 0; } static void ar8316_init_globals(struct ar8216_priv *priv) { /* standard atheros magic */ priv->write(priv, 0x38, 0xc000050e); /* enable cpu port to receive multicast and broadcast frames */ priv->write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f); /* enable jumbo frames */ ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL, AR8316_GCTRL_MTU, 9018 + 8 + 2); /* Enable MIB counters */ ar8216_rmw(priv, AR8216_REG_MIB_FUNC, AR8216_MIB_FUNC | AR8236_MIB_EN, (AR8216_MIB_FUNC_NO_OP << AR8216_MIB_FUNC_S) | AR8236_MIB_EN); } static const struct ar8xxx_chip ar8316_chip = { .caps = AR8XXX_CAP_GIGE | AR8XXX_CAP_MIB_COUNTERS, .hw_init = ar8316_hw_init, .init_globals = ar8316_init_globals, .init_port = ar8216_init_port, .setup_port = ar8216_setup_port, .read_port_status = ar8216_read_port_status, .atu_flush = ar8216_atu_flush, .vtu_flush = ar8216_vtu_flush, .vtu_load_vlan = ar8216_vtu_load_vlan, .num_mibs = ARRAY_SIZE(ar8236_mibs), .mib_decs = ar8236_mibs, }; static u32 ar8327_get_pad_cfg(struct ar8327_pad_cfg *cfg) { u32 t; if (!cfg) return 0; t = 0; switch (cfg->mode) { case AR8327_PAD_NC: break; case AR8327_PAD_MAC2MAC_MII: t = AR8327_PAD_MAC_MII_EN; if (cfg->rxclk_sel) t |= AR8327_PAD_MAC_MII_RXCLK_SEL; if (cfg->txclk_sel) t |= AR8327_PAD_MAC_MII_TXCLK_SEL; break; case AR8327_PAD_MAC2MAC_GMII: t = AR8327_PAD_MAC_GMII_EN; if (cfg->rxclk_sel) t |= AR8327_PAD_MAC_GMII_RXCLK_SEL; if (cfg->txclk_sel) t |= AR8327_PAD_MAC_GMII_TXCLK_SEL; break; case AR8327_PAD_MAC_SGMII: t = AR8327_PAD_SGMII_EN; /* * WAR for the QUalcomm Atheros AP136 board. * It seems that RGMII TX/RX delay settings needs to be * applied for SGMII mode as well, The ethernet is not * reliable without this. */ t |= cfg->txclk_delay_sel << AR8327_PAD_RGMII_TXCLK_DELAY_SEL_S; t |= cfg->rxclk_delay_sel << AR8327_PAD_RGMII_RXCLK_DELAY_SEL_S; if (cfg->rxclk_delay_en) t |= AR8327_PAD_RGMII_RXCLK_DELAY_EN; if (cfg->txclk_delay_en) t |= AR8327_PAD_RGMII_TXCLK_DELAY_EN; if (cfg->sgmii_delay_en) t |= AR8327_PAD_SGMII_DELAY_EN; break; case AR8327_PAD_MAC2PHY_MII: t = AR8327_PAD_PHY_MII_EN; if (cfg->rxclk_sel) t |= AR8327_PAD_PHY_MII_RXCLK_SEL; if (cfg->txclk_sel) t |= AR8327_PAD_PHY_MII_TXCLK_SEL; break; case AR8327_PAD_MAC2PHY_GMII: t = AR8327_PAD_PHY_GMII_EN; if (cfg->pipe_rxclk_sel) t |= AR8327_PAD_PHY_GMII_PIPE_RXCLK_SEL; if (cfg->rxclk_sel) t |= AR8327_PAD_PHY_GMII_RXCLK_SEL; if (cfg->txclk_sel) t |= AR8327_PAD_PHY_GMII_TXCLK_SEL; break; case AR8327_PAD_MAC_RGMII: t = AR8327_PAD_RGMII_EN; t |= cfg->txclk_delay_sel << AR8327_PAD_RGMII_TXCLK_DELAY_SEL_S; t |= cfg->rxclk_delay_sel << AR8327_PAD_RGMII_RXCLK_DELAY_SEL_S; if (cfg->rxclk_delay_en) t |= AR8327_PAD_RGMII_RXCLK_DELAY_EN; if (cfg->txclk_delay_en) t |= AR8327_PAD_RGMII_TXCLK_DELAY_EN; break; case AR8327_PAD_PHY_GMII: t = AR8327_PAD_PHYX_GMII_EN; break; case AR8327_PAD_PHY_RGMII: t = AR8327_PAD_PHYX_RGMII_EN; break; case AR8327_PAD_PHY_MII: t = AR8327_PAD_PHYX_MII_EN; break; } return t; } static void ar8327_phy_fixup(struct ar8216_priv *priv, int phy) { switch (priv->chip_rev) { case 1: /* For 100M waveform */ ar8216_phy_dbg_write(priv, phy, 0, 0x02ea); /* Turn on Gigabit clock */ ar8216_phy_dbg_write(priv, phy, 0x3d, 0x68a0); break; case 2: ar8216_phy_mmd_write(priv, phy, 0x7, 0x3c); ar8216_phy_mmd_write(priv, phy, 0x4007, 0x0); /* fallthrough */ case 4: ar8216_phy_mmd_write(priv, phy, 0x3, 0x800d); ar8216_phy_mmd_write(priv, phy, 0x4003, 0x803f); ar8216_phy_dbg_write(priv, phy, 0x3d, 0x6860); ar8216_phy_dbg_write(priv, phy, 0x5, 0x2c46); ar8216_phy_dbg_write(priv, phy, 0x3c, 0x6000); break; } } static int ar8327_hw_init(struct ar8216_priv *priv) { struct ar8327_platform_data *pdata; struct ar8327_led_cfg *led_cfg; struct mii_bus *bus; u32 pos, new_pos; u32 t; int i; pdata = priv->phy->dev.platform_data; if (!pdata) return -EINVAL; t = ar8327_get_pad_cfg(pdata->pad0_cfg); priv->write(priv, AR8327_REG_PAD0_MODE, t); t = ar8327_get_pad_cfg(pdata->pad5_cfg); priv->write(priv, AR8327_REG_PAD5_MODE, t); t = ar8327_get_pad_cfg(pdata->pad6_cfg); priv->write(priv, AR8327_REG_PAD6_MODE, t); pos = priv->read(priv, AR8327_REG_POWER_ON_STRIP); new_pos = pos; led_cfg = pdata->led_cfg; if (led_cfg) { if (led_cfg->open_drain) new_pos |= AR8327_POWER_ON_STRIP_LED_OPEN_EN; else new_pos &= ~AR8327_POWER_ON_STRIP_LED_OPEN_EN; priv->write(priv, AR8327_REG_LED_CTRL0, led_cfg->led_ctrl0); priv->write(priv, AR8327_REG_LED_CTRL1, led_cfg->led_ctrl1); priv->write(priv, AR8327_REG_LED_CTRL2, led_cfg->led_ctrl2); priv->write(priv, AR8327_REG_LED_CTRL3, led_cfg->led_ctrl3); } if (new_pos != pos) { new_pos |= AR8327_POWER_ON_STRIP_POWER_ON_SEL; priv->write(priv, AR8327_REG_POWER_ON_STRIP, new_pos); } bus = priv->mii_bus; for (i = 0; i < AR8327_NUM_PHYS; i++) { ar8327_phy_fixup(priv, i); /* start aneg on the PHY */ mdiobus_write(bus, i, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); mdiobus_write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL); mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE); } msleep(1000); return 0; } static void ar8327_init_globals(struct ar8216_priv *priv) { u32 t; /* enable CPU port and disable mirror port */ t = AR8327_FWD_CTRL0_CPU_PORT_EN | AR8327_FWD_CTRL0_MIRROR_PORT; priv->write(priv, AR8327_REG_FWD_CTRL0, t); /* forward multicast and broadcast frames to CPU */ t = (AR8327_PORTS_ALL << AR8327_FWD_CTRL1_UC_FLOOD_S) | (AR8327_PORTS_ALL << AR8327_FWD_CTRL1_MC_FLOOD_S) | (AR8327_PORTS_ALL << AR8327_FWD_CTRL1_BC_FLOOD_S); priv->write(priv, AR8327_REG_FWD_CTRL1, t); /* setup MTU */ ar8216_rmw(priv, AR8327_REG_MAX_FRAME_SIZE, AR8327_MAX_FRAME_SIZE_MTU, 1518 + 8 + 2); /* Enable MIB counters */ ar8216_reg_set(priv, AR8327_REG_MODULE_EN, AR8327_MODULE_EN_MIB); } static void ar8327_config_port(struct ar8216_priv *priv, unsigned int port, struct ar8327_port_cfg *cfg) { u32 t; if (!cfg || !cfg->force_link) { priv->write(priv, AR8327_REG_PORT_STATUS(port), AR8216_PORT_STATUS_LINK_AUTO); return; } t = AR8216_PORT_STATUS_TXMAC | AR8216_PORT_STATUS_RXMAC; t |= cfg->duplex ? AR8216_PORT_STATUS_DUPLEX : 0; t |= cfg->rxpause ? AR8216_PORT_STATUS_RXFLOW : 0; t |= cfg->txpause ? AR8216_PORT_STATUS_TXFLOW : 0; switch (cfg->speed) { case AR8327_PORT_SPEED_10: t |= AR8216_PORT_SPEED_10M; break; case AR8327_PORT_SPEED_100: t |= AR8216_PORT_SPEED_100M; break; case AR8327_PORT_SPEED_1000: t |= AR8216_PORT_SPEED_1000M; break; } priv->write(priv, AR8327_REG_PORT_STATUS(port), t); } static void ar8327_init_port(struct ar8216_priv *priv, int port) { struct ar8327_platform_data *pdata; struct ar8327_port_cfg *cfg; u32 t; pdata = priv->phy->dev.platform_data; if (pdata && port == AR8216_PORT_CPU) cfg = &pdata->port0_cfg; else if (pdata && port == 6) cfg = &pdata->port6_cfg; else cfg = NULL; ar8327_config_port(priv, port, cfg); priv->write(priv, AR8327_REG_PORT_HEADER(port), 0); t = 1 << AR8327_PORT_VLAN0_DEF_SVID_S; t |= 1 << AR8327_PORT_VLAN0_DEF_CVID_S; priv->write(priv, AR8327_REG_PORT_VLAN0(port), t); t = AR8327_PORT_VLAN1_OUT_MODE_UNTOUCH << AR8327_PORT_VLAN1_OUT_MODE_S; priv->write(priv, AR8327_REG_PORT_VLAN1(port), t); t = AR8327_PORT_LOOKUP_LEARN; t |= AR8216_PORT_STATE_FORWARD << AR8327_PORT_LOOKUP_STATE_S; priv->write(priv, AR8327_REG_PORT_LOOKUP(port), t); } static u32 ar8327_read_port_status(struct ar8216_priv *priv, int port) { return priv->read(priv, AR8327_REG_PORT_STATUS(port)); } static int ar8327_atu_flush(struct ar8216_priv *priv) { int ret; ret = ar8216_wait_bit(priv, AR8327_REG_ATU_FUNC, AR8327_ATU_FUNC_BUSY, 0); if (!ret) priv->write(priv, AR8327_REG_ATU_FUNC, AR8327_ATU_FUNC_OP_FLUSH); return ret; } static void ar8327_vtu_op(struct ar8216_priv *priv, u32 op, u32 val) { if (ar8216_wait_bit(priv, AR8327_REG_VTU_FUNC1, AR8327_VTU_FUNC1_BUSY, 0)) return; if ((op & AR8327_VTU_FUNC1_OP) == AR8327_VTU_FUNC1_OP_LOAD) priv->write(priv, AR8327_REG_VTU_FUNC0, val); op |= AR8327_VTU_FUNC1_BUSY; priv->write(priv, AR8327_REG_VTU_FUNC1, op); } static void ar8327_vtu_flush(struct ar8216_priv *priv) { ar8327_vtu_op(priv, AR8327_VTU_FUNC1_OP_FLUSH, 0); } static void ar8327_vtu_load_vlan(struct ar8216_priv *priv, u32 vid, u32 port_mask) { u32 op; u32 val; int i; op = AR8327_VTU_FUNC1_OP_LOAD | (vid << AR8327_VTU_FUNC1_VID_S); val = AR8327_VTU_FUNC0_VALID | AR8327_VTU_FUNC0_IVL; for (i = 0; i < AR8327_NUM_PORTS; i++) { u32 mode; if ((port_mask & BIT(i)) == 0) mode = AR8327_VTU_FUNC0_EG_MODE_NOT; else if (priv->vlan == 0) mode = AR8327_VTU_FUNC0_EG_MODE_KEEP; else if (priv->vlan_tagged & BIT(i)) mode = AR8327_VTU_FUNC0_EG_MODE_TAG; else mode = AR8327_VTU_FUNC0_EG_MODE_UNTAG; val |= mode << AR8327_VTU_FUNC0_EG_MODE_S(i); } ar8327_vtu_op(priv, op, val); } static void ar8327_setup_port(struct ar8216_priv *priv, int port, u32 egress, u32 ingress, u32 members, u32 pvid) { u32 t; u32 mode; t = pvid << AR8327_PORT_VLAN0_DEF_SVID_S; t |= pvid << AR8327_PORT_VLAN0_DEF_CVID_S; priv->write(priv, AR8327_REG_PORT_VLAN0(port), t); mode = AR8327_PORT_VLAN1_OUT_MODE_UNMOD; switch (egress) { case AR8216_OUT_KEEP: mode = AR8327_PORT_VLAN1_OUT_MODE_UNTOUCH; break; case AR8216_OUT_STRIP_VLAN: mode = AR8327_PORT_VLAN1_OUT_MODE_UNTAG; break; case AR8216_OUT_ADD_VLAN: mode = AR8327_PORT_VLAN1_OUT_MODE_TAG; break; } t = AR8327_PORT_VLAN1_PORT_VLAN_PROP; t |= mode << AR8327_PORT_VLAN1_OUT_MODE_S; priv->write(priv, AR8327_REG_PORT_VLAN1(port), t); t = members; t |= AR8327_PORT_LOOKUP_LEARN; t |= ingress << AR8327_PORT_LOOKUP_IN_MODE_S; t |= AR8216_PORT_STATE_FORWARD << AR8327_PORT_LOOKUP_STATE_S; priv->write(priv, AR8327_REG_PORT_LOOKUP(port), t); } static const struct ar8xxx_chip ar8327_chip = { .caps = AR8XXX_CAP_GIGE | AR8XXX_CAP_MIB_COUNTERS, .hw_init = ar8327_hw_init, .init_globals = ar8327_init_globals, .init_port = ar8327_init_port, .setup_port = ar8327_setup_port, .read_port_status = ar8327_read_port_status, .atu_flush = ar8327_atu_flush, .vtu_flush = ar8327_vtu_flush, .vtu_load_vlan = ar8327_vtu_load_vlan, .num_mibs = ARRAY_SIZE(ar8236_mibs), .mib_decs = ar8236_mibs, }; static int ar8216_sw_set_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); priv->vlan = !!val->value.i; return 0; } static int ar8216_sw_get_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); val->value.i = priv->vlan; return 0; } static int ar8216_sw_set_pvid(struct switch_dev *dev, int port, int vlan) { struct ar8216_priv *priv = swdev_to_ar8216(dev); /* make sure no invalid PVIDs get set */ if (vlan >= dev->vlans) return -EINVAL; priv->pvid[port] = vlan; return 0; } static int ar8216_sw_get_pvid(struct switch_dev *dev, int port, int *vlan) { struct ar8216_priv *priv = swdev_to_ar8216(dev); *vlan = priv->pvid[port]; return 0; } static int ar8216_sw_set_vid(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); priv->vlan_id[val->port_vlan] = val->value.i; return 0; } static int ar8216_sw_get_vid(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); val->value.i = priv->vlan_id[val->port_vlan]; return 0; } static int ar8216_sw_get_port_link(struct switch_dev *dev, int port, struct switch_port_link *link) { struct ar8216_priv *priv = swdev_to_ar8216(dev); ar8216_read_port_link(priv, port, link); return 0; } static int ar8216_sw_get_ports(struct switch_dev *dev, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); u8 ports = priv->vlan_table[val->port_vlan]; int i; val->len = 0; for (i = 0; i < dev->ports; i++) { struct switch_port *p; if (!(ports & (1 << i))) continue; p = &val->value.ports[val->len++]; p->id = i; if (priv->vlan_tagged & (1 << i)) p->flags = (1 << SWITCH_PORT_FLAG_TAGGED); else p->flags = 0; } return 0; } static int ar8216_sw_set_ports(struct switch_dev *dev, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); u8 *vt = &priv->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)) { priv->vlan_tagged |= (1 << p->id); } else { priv->vlan_tagged &= ~(1 << p->id); priv->pvid[p->id] = val->port_vlan; /* make sure that an untagged port does not * appear in other vlans */ for (j = 0; j < AR8X16_MAX_VLANS; j++) { if (j == val->port_vlan) continue; priv->vlan_table[j] &= ~(1 << p->id); } } *vt |= 1 << p->id; } return 0; } static int ar8216_sw_hw_apply(struct switch_dev *dev) { struct ar8216_priv *priv = swdev_to_ar8216(dev); u8 portmask[AR8X16_MAX_PORTS]; int i, j; mutex_lock(&priv->reg_mutex); /* flush all vlan translation unit entries */ priv->chip->vtu_flush(priv); memset(portmask, 0, sizeof(portmask)); if (!priv->init) { /* calculate the port destination masks and load vlans * into the vlan translation unit */ for (j = 0; j < AR8X16_MAX_VLANS; j++) { u8 vp = priv->vlan_table[j]; if (!vp) continue; for (i = 0; i < dev->ports; i++) { u8 mask = (1 << i); if (vp & mask) portmask[i] |= vp & ~mask; } priv->chip->vtu_load_vlan(priv, priv->vlan_id[j], priv->vlan_table[j]); } } else { /* vlan disabled: * isolate all ports, but connect them to the cpu port */ for (i = 0; i < dev->ports; i++) { if (i == AR8216_PORT_CPU) continue; portmask[i] = 1 << AR8216_PORT_CPU; portmask[AR8216_PORT_CPU] |= (1 << i); } } /* update the port destination mask registers and tag settings */ for (i = 0; i < dev->ports; i++) { int egress, ingress; int pvid; if (priv->vlan) { pvid = priv->vlan_id[priv->pvid[i]]; if (priv->vlan_tagged & (1 << i)) egress = AR8216_OUT_ADD_VLAN; else egress = AR8216_OUT_STRIP_VLAN; ingress = AR8216_IN_SECURE; } else { pvid = i; egress = AR8216_OUT_KEEP; ingress = AR8216_IN_PORT_ONLY; } priv->chip->setup_port(priv, i, egress, ingress, portmask[i], pvid); } mutex_unlock(&priv->reg_mutex); return 0; } static int ar8216_sw_reset_switch(struct switch_dev *dev) { struct ar8216_priv *priv = swdev_to_ar8216(dev); int i; mutex_lock(&priv->reg_mutex); memset(&priv->vlan, 0, sizeof(struct ar8216_priv) - offsetof(struct ar8216_priv, vlan)); for (i = 0; i < AR8X16_MAX_VLANS; i++) priv->vlan_id[i] = i; /* Configure all ports */ for (i = 0; i < dev->ports; i++) priv->chip->init_port(priv, i); priv->chip->init_globals(priv); mutex_unlock(&priv->reg_mutex); return ar8216_sw_hw_apply(dev); } static int ar8216_sw_set_reset_mibs(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); unsigned int len; int ret; if (!ar8xxx_has_mib_counters(priv)) return -EOPNOTSUPP; mutex_lock(&priv->mib_lock); len = priv->dev.ports * priv->chip->num_mibs * sizeof(*priv->mib_stats); memset(priv->mib_stats, '\0', len); ret = ar8216_mib_flush(priv); if (ret) goto unlock; ret = 0; unlock: mutex_unlock(&priv->mib_lock); return ret; } static int ar8216_sw_set_port_reset_mib(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); int port; int ret; if (!ar8xxx_has_mib_counters(priv)) return -EOPNOTSUPP; port = val->port_vlan; if (port >= dev->ports) return -EINVAL; mutex_lock(&priv->mib_lock); ret = ar8216_mib_capture(priv); if (ret) goto unlock; ar8216_mib_fetch_port_stat(priv, port, true); ret = 0; unlock: mutex_unlock(&priv->mib_lock); return ret; } static int ar8216_sw_get_port_mib(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8216_priv *priv = swdev_to_ar8216(dev); const struct ar8xxx_chip *chip = priv->chip; u64 *mib_stats; int port; int ret; char *buf = priv->buf; int i, len = 0; if (!ar8xxx_has_mib_counters(priv)) return -EOPNOTSUPP; port = val->port_vlan; if (port >= dev->ports) return -EINVAL; mutex_lock(&priv->mib_lock); ret = ar8216_mib_capture(priv); if (ret) goto unlock; ar8216_mib_fetch_port_stat(priv, port, false); len += snprintf(buf + len, sizeof(priv->buf) - len, "Port %d MIB counters\n", port); mib_stats = &priv->mib_stats[port * chip->num_mibs]; for (i = 0; i < chip->num_mibs; i++) len += snprintf(buf + len, sizeof(priv->buf) - len, "%-12s: %llu\n", chip->mib_decs[i].name, mib_stats[i]); val->value.s = buf; val->len = len; ret = 0; unlock: mutex_unlock(&priv->mib_lock); return ret; } static struct switch_attr ar8216_globals[] = { { .type = SWITCH_TYPE_INT, .name = "enable_vlan", .description = "Enable VLAN mode", .set = ar8216_sw_set_vlan, .get = ar8216_sw_get_vlan, .max = 1 }, { .type = SWITCH_TYPE_NOVAL, .name = "reset_mibs", .description = "Reset all MIB counters", .set = ar8216_sw_set_reset_mibs, }, }; static struct switch_attr ar8216_port[] = { { .type = SWITCH_TYPE_NOVAL, .name = "reset_mib", .description = "Reset single port MIB counters", .set = ar8216_sw_set_port_reset_mib, }, { .type = SWITCH_TYPE_STRING, .name = "mib", .description = "Get port's MIB counters", .set = NULL, .get = ar8216_sw_get_port_mib, }, }; static struct switch_attr ar8216_vlan[] = { { .type = SWITCH_TYPE_INT, .name = "vid", .description = "VLAN ID (0-4094)", .set = ar8216_sw_set_vid, .get = ar8216_sw_get_vid, .max = 4094, }, }; static const struct switch_dev_ops ar8216_sw_ops = { .attr_global = { .attr = ar8216_globals, .n_attr = ARRAY_SIZE(ar8216_globals), }, .attr_port = { .attr = ar8216_port, .n_attr = ARRAY_SIZE(ar8216_port), }, .attr_vlan = { .attr = ar8216_vlan, .n_attr = ARRAY_SIZE(ar8216_vlan), }, .get_port_pvid = ar8216_sw_get_pvid, .set_port_pvid = ar8216_sw_set_pvid, .get_vlan_ports = ar8216_sw_get_ports, .set_vlan_ports = ar8216_sw_set_ports, .apply_config = ar8216_sw_hw_apply, .reset_switch = ar8216_sw_reset_switch, .get_port_link = ar8216_sw_get_port_link, }; static int ar8216_id_chip(struct ar8216_priv *priv) { u32 val; u16 id; int i; val = priv->read(priv, AR8216_REG_CTRL); if (val == ~0) return -ENODEV; id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION); for (i = 0; i < AR8X16_PROBE_RETRIES; i++) { u16 t; val = priv->read(priv, AR8216_REG_CTRL); if (val == ~0) return -ENODEV; t = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION); if (t != id) return -ENODEV; } priv->chip_ver = (id & AR8216_CTRL_VERSION) >> AR8216_CTRL_VERSION_S; priv->chip_rev = (id & AR8216_CTRL_REVISION); switch (priv->chip_ver) { case AR8XXX_VER_AR8216: priv->chip = &ar8216_chip; break; case AR8XXX_VER_AR8236: priv->chip = &ar8236_chip; break; case AR8XXX_VER_AR8316: priv->chip = &ar8316_chip; break; case AR8XXX_VER_AR8327: priv->mii_lo_first = true; priv->chip = &ar8327_chip; break; default: printk(KERN_DEBUG "ar8216: Unknown Atheros device [ver=%d, rev=%d]\n", priv->chip_ver, priv->chip_rev); return -ENODEV; } return 0; } static void ar8xxx_mib_work_func(struct work_struct *work) { struct ar8216_priv *priv; int err; priv = container_of(work, struct ar8216_priv, mib_work.work); mutex_lock(&priv->mib_lock); err = ar8216_mib_capture(priv); if (err) goto next_port; ar8216_mib_fetch_port_stat(priv, priv->mib_next_port, false); next_port: priv->mib_next_port++; if (priv->mib_next_port >= priv->dev.ports) priv->mib_next_port = 0; mutex_unlock(&priv->mib_lock); schedule_delayed_work(&priv->mib_work, msecs_to_jiffies(AR8XXX_MIB_WORK_DELAY)); } static int ar8xxx_mib_init(struct ar8216_priv *priv) { unsigned int len; if (!ar8xxx_has_mib_counters(priv)) return 0; BUG_ON(!priv->chip->mib_decs || !priv->chip->num_mibs); len = priv->dev.ports * priv->chip->num_mibs * sizeof(*priv->mib_stats); priv->mib_stats = kzalloc(len, GFP_KERNEL); if (!priv->mib_stats) return -ENOMEM; return 0; } static void ar8xxx_mib_start(struct ar8216_priv *priv) { if (!ar8xxx_has_mib_counters(priv)) return; schedule_delayed_work(&priv->mib_work, msecs_to_jiffies(AR8XXX_MIB_WORK_DELAY)); } static void ar8xxx_mib_stop(struct ar8216_priv *priv) { if (!ar8xxx_has_mib_counters(priv)) return; cancel_delayed_work(&priv->mib_work); } static struct ar8216_priv * ar8xxx_create(void) { struct ar8216_priv *priv; priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL); if (priv == NULL) return NULL; mutex_init(&priv->reg_mutex); mutex_init(&priv->mib_lock); INIT_DELAYED_WORK(&priv->mib_work, ar8xxx_mib_work_func); return priv; } static void ar8xxx_free(struct ar8216_priv *priv) { kfree(priv->mib_stats); kfree(priv); } static struct ar8216_priv * ar8xxx_create_mii(struct mii_bus *bus) { struct ar8216_priv *priv; priv = ar8xxx_create(); if (priv) { priv->mii_bus = bus; priv->read = ar8216_mii_read; priv->write = ar8216_mii_write; } return priv; } static int ar8216_config_init(struct phy_device *pdev) { struct ar8216_priv *priv = pdev->priv; struct net_device *dev = pdev->attached_dev; struct switch_dev *swdev; int ret; if (!priv) { priv = ar8xxx_create_mii(pdev->bus); if (priv == NULL) return -ENOMEM; ret = ar8216_id_chip(priv); if (ret) goto err_free_priv; } priv->phy = pdev; if (ar8xxx_has_gige(priv)) pdev->supported = SUPPORTED_1000baseT_Full; else pdev->supported = SUPPORTED_100baseT_Full; pdev->advertising = pdev->supported; if (pdev->addr != 0) { if (chip_is_ar8316(priv)) { /* check if we're attaching to the switch twice */ pdev = pdev->bus->phy_map[0]; if (!pdev) { ar8xxx_free(priv); return 0; } /* switch device has not been initialized, reuse priv */ if (!pdev->priv) { priv->port4_phy = true; pdev->priv = priv; return 0; } ar8xxx_free(priv); /* switch device has been initialized, reinit */ priv = pdev->priv; priv->dev.ports = (AR8216_NUM_PORTS - 1); priv->initialized = false; priv->port4_phy = true; ar8316_hw_init(priv); return 0; } ar8xxx_free(priv); return 0; } pdev->priv = priv; swdev = &priv->dev; swdev->cpu_port = AR8216_PORT_CPU; swdev->ops = &ar8216_sw_ops; swdev->ports = AR8216_NUM_PORTS; if (chip_is_ar8316(priv)) { swdev->name = "Atheros AR8316"; swdev->vlans = AR8X16_MAX_VLANS; if (priv->port4_phy) { /* port 5 connected to the other mac, therefore unusable */ swdev->ports = (AR8216_NUM_PORTS - 1); } } else if (chip_is_ar8236(priv)) { swdev->name = "Atheros AR8236"; swdev->vlans = AR8216_NUM_VLANS; swdev->ports = AR8216_NUM_PORTS; } else if (chip_is_ar8327(priv)) { swdev->name = "Atheros AR8327"; swdev->vlans = AR8X16_MAX_VLANS; swdev->ports = AR8327_NUM_PORTS; } else { swdev->name = "Atheros AR8216"; swdev->vlans = AR8216_NUM_VLANS; } ret = ar8xxx_mib_init(priv); if (ret) goto err_free_priv; ret = register_switch(swdev, pdev->attached_dev); if (ret) goto err_free_priv; printk(KERN_INFO "%s: %s switch driver attached.\n", pdev->attached_dev->name, swdev->name); priv->init = true; ret = priv->chip->hw_init(priv); if (ret) goto err_unregister_switch; ret = ar8216_sw_reset_switch(&priv->dev); if (ret) goto err_unregister_switch; /* VID fixup only needed on ar8216 */ if (chip_is_ar8216(priv)) { dev->phy_ptr = priv; dev->priv_flags |= IFF_NO_IP_ALIGN; dev->eth_mangle_rx = ar8216_mangle_rx; dev->eth_mangle_tx = ar8216_mangle_tx; } priv->init = false; ar8xxx_mib_start(priv); return 0; err_unregister_switch: unregister_switch(&priv->dev); err_free_priv: ar8xxx_free(priv); pdev->priv = NULL; return ret; } static int ar8216_read_status(struct phy_device *phydev) { struct ar8216_priv *priv = phydev->priv; struct switch_port_link link; int ret; if (phydev->addr != 0) return genphy_read_status(phydev); ar8216_read_port_link(priv, phydev->addr, &link); phydev->link = !!link.link; if (!phydev->link) return 0; switch (link.speed) { case SWITCH_PORT_SPEED_10: phydev->speed = SPEED_10; break; case SWITCH_PORT_SPEED_100: phydev->speed = SPEED_100; break; case SWITCH_PORT_SPEED_1000: phydev->speed = SPEED_1000; break; default: phydev->speed = 0; } phydev->duplex = link.duplex ? DUPLEX_FULL : DUPLEX_HALF; /* flush the address translation unit */ mutex_lock(&priv->reg_mutex); ret = priv->chip->atu_flush(priv); mutex_unlock(&priv->reg_mutex); phydev->state = PHY_RUNNING; netif_carrier_on(phydev->attached_dev); phydev->adjust_link(phydev->attached_dev); return ret; } static int ar8216_config_aneg(struct phy_device *phydev) { if (phydev->addr == 0) return 0; return genphy_config_aneg(phydev); } static const u32 ar8xxx_phy_ids[] = { 0x004dd033, 0x004dd041, 0x004dd042, }; static bool ar8xxx_phy_match(u32 phy_id) { int i; for (i = 0; i < ARRAY_SIZE(ar8xxx_phy_ids); i++) if (phy_id == ar8xxx_phy_ids[i]) return true; return false; } static bool ar8xxx_is_possible(struct mii_bus *bus) { unsigned i; for (i = 0; i < 4; i++) { u32 phy_id; phy_id = mdiobus_read(bus, i, MII_PHYSID1) << 16; phy_id |= mdiobus_read(bus, i, MII_PHYSID2); if (!ar8xxx_phy_match(phy_id)) { pr_debug("ar8xxx: unknown PHY at %s:%02x id:%08x\n", dev_name(&bus->dev), i, phy_id); return false; } } return true; } static int ar8216_probe(struct phy_device *pdev) { struct ar8216_priv *priv; int ret; /* skip PHYs at unused adresses */ if (pdev->addr != 0 && pdev->addr != 4) return -ENODEV; if (!ar8xxx_is_possible(pdev->bus)) return -ENODEV; priv = ar8xxx_create_mii(pdev->bus); if (priv == NULL) return -ENOMEM; priv->phy = pdev; ret = ar8216_id_chip(priv); ar8xxx_free(priv); return ret; } static void ar8216_detach(struct phy_device *pdev) { struct net_device *dev = pdev->attached_dev; if (!dev) return; dev->phy_ptr = NULL; dev->priv_flags &= ~IFF_NO_IP_ALIGN; dev->eth_mangle_rx = NULL; dev->eth_mangle_tx = NULL; } static void ar8216_remove(struct phy_device *pdev) { struct ar8216_priv *priv = pdev->priv; if (!priv) return; pdev->priv = NULL; if (pdev->addr == 0) unregister_switch(&priv->dev); ar8xxx_mib_stop(priv); ar8xxx_free(priv); } static struct phy_driver ar8216_driver = { .phy_id = 0x004d0000, .name = "Atheros AR8216/AR8236/AR8316", .phy_id_mask = 0xffff0000, .features = PHY_BASIC_FEATURES, .probe = ar8216_probe, .remove = ar8216_remove, .detach = ar8216_detach, .config_init = &ar8216_config_init, .config_aneg = &ar8216_config_aneg, .read_status = &ar8216_read_status, .driver = { .owner = THIS_MODULE }, }; int __init ar8216_init(void) { return phy_driver_register(&ar8216_driver); } void __exit ar8216_exit(void) { phy_driver_unregister(&ar8216_driver); } module_init(ar8216_init); module_exit(ar8216_exit); MODULE_LICENSE("GPL");