/* * 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 #include "ar8216.h" extern const struct ar8xxx_chip ar8327_chip; extern const struct ar8xxx_chip ar8337_chip; #define AR8XXX_MIB_WORK_DELAY 2000 /* msecs */ #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"), }; const struct ar8xxx_mib_desc ar8236_mibs[39] = { 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 DEFINE_MUTEX(ar8xxx_dev_list_lock); static LIST_HEAD(ar8xxx_dev_list); /* inspired by phy_poll_reset in drivers/net/phy/phy_device.c */ static int ar8xxx_phy_poll_reset(struct mii_bus *bus) { unsigned int sleep_msecs = 20; int ret, elapsed, i; for (elapsed = sleep_msecs; elapsed <= 600; elapsed += sleep_msecs) { msleep(sleep_msecs); for (i = 0; i < AR8XXX_NUM_PHYS; i++) { ret = mdiobus_read(bus, i, MII_BMCR); if (ret < 0) return ret; if (ret & BMCR_RESET) break; if (i == AR8XXX_NUM_PHYS - 1) { usleep_range(1000, 2000); return 0; } } } return -ETIMEDOUT; } static int ar8xxx_phy_check_aneg(struct phy_device *phydev) { int ret; if (phydev->autoneg != AUTONEG_ENABLE) return 0; /* * BMCR_ANENABLE might have been cleared * by phy_init_hw in certain kernel versions * therefore check for it */ ret = phy_read(phydev, MII_BMCR); if (ret < 0) return ret; if (ret & BMCR_ANENABLE) return 0; dev_info(&phydev->dev, "ANEG disabled, re-enabling ...\n"); ret |= BMCR_ANENABLE | BMCR_ANRESTART; return phy_write(phydev, MII_BMCR, ret); } void ar8xxx_phy_init(struct ar8xxx_priv *priv) { int i; struct mii_bus *bus; bus = priv->mii_bus; for (i = 0; i < AR8XXX_NUM_PHYS; i++) { if (priv->chip->phy_fixup) priv->chip->phy_fixup(priv, i); /* initialize the port itself */ mdiobus_write(bus, i, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); if (ar8xxx_has_gige(priv)) mdiobus_write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL); mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE); } ar8xxx_phy_poll_reset(bus); } u32 ar8xxx_mii_read32(struct ar8xxx_priv *priv, int phy_id, int regnum) { struct mii_bus *bus = priv->mii_bus; u16 lo, hi; lo = bus->read(bus, phy_id, regnum); hi = bus->read(bus, phy_id, regnum + 1); return (hi << 16) | lo; } void ar8xxx_mii_write32(struct ar8xxx_priv *priv, int phy_id, int regnum, u32 val) { struct mii_bus *bus = priv->mii_bus; u16 lo, hi; lo = val & 0xffff; hi = (u16) (val >> 16); if (priv->chip->mii_lo_first) { bus->write(bus, phy_id, regnum, lo); bus->write(bus, phy_id, regnum + 1, hi); } else { bus->write(bus, phy_id, regnum + 1, hi); bus->write(bus, phy_id, regnum, lo); } } u32 ar8xxx_read(struct ar8xxx_priv *priv, int reg) { struct mii_bus *bus = priv->mii_bus; u16 r1, r2, page; u32 val; split_addr((u32) reg, &r1, &r2, &page); mutex_lock(&bus->mdio_lock); bus->write(bus, 0x18, 0, page); wait_for_page_switch(); val = ar8xxx_mii_read32(priv, 0x10 | r2, r1); mutex_unlock(&bus->mdio_lock); return val; } void ar8xxx_write(struct ar8xxx_priv *priv, int reg, u32 val) { struct mii_bus *bus = priv->mii_bus; u16 r1, r2, page; split_addr((u32) reg, &r1, &r2, &page); mutex_lock(&bus->mdio_lock); bus->write(bus, 0x18, 0, page); wait_for_page_switch(); ar8xxx_mii_write32(priv, 0x10 | r2, r1, val); mutex_unlock(&bus->mdio_lock); } u32 ar8xxx_rmw(struct ar8xxx_priv *priv, int reg, u32 mask, u32 val) { struct mii_bus *bus = priv->mii_bus; u16 r1, r2, page; u32 ret; split_addr((u32) reg, &r1, &r2, &page); mutex_lock(&bus->mdio_lock); bus->write(bus, 0x18, 0, page); wait_for_page_switch(); ret = ar8xxx_mii_read32(priv, 0x10 | r2, r1); ret &= ~mask; ret |= val; ar8xxx_mii_write32(priv, 0x10 | r2, r1, ret); mutex_unlock(&bus->mdio_lock); return ret; } void ar8xxx_phy_dbg_write(struct ar8xxx_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); } void ar8xxx_phy_mmd_write(struct ar8xxx_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); } u16 ar8xxx_phy_mmd_read(struct ar8xxx_priv *priv, int phy_addr, u16 addr) { struct mii_bus *bus = priv->mii_bus; u16 data; mutex_lock(&bus->mdio_lock); bus->write(bus, phy_addr, MII_ATH_MMD_ADDR, addr); data = bus->read(bus, phy_addr, MII_ATH_MMD_DATA); mutex_unlock(&bus->mdio_lock); return data; } static int ar8xxx_reg_wait(struct ar8xxx_priv *priv, u32 reg, u32 mask, u32 val, unsigned timeout) { int i; for (i = 0; i < timeout; i++) { u32 t; t = ar8xxx_read(priv, reg); if ((t & mask) == val) return 0; usleep_range(1000, 2000); } return -ETIMEDOUT; } static int ar8xxx_mib_op(struct ar8xxx_priv *priv, u32 op) { unsigned mib_func = priv->chip->mib_func; int ret; lockdep_assert_held(&priv->mib_lock); /* Capture the hardware statistics for all ports */ ar8xxx_rmw(priv, mib_func, AR8216_MIB_FUNC, (op << AR8216_MIB_FUNC_S)); /* Wait for the capturing to complete. */ ret = ar8xxx_reg_wait(priv, mib_func, AR8216_MIB_BUSY, 0, 10); if (ret) goto out; ret = 0; out: return ret; } static int ar8xxx_mib_capture(struct ar8xxx_priv *priv) { return ar8xxx_mib_op(priv, AR8216_MIB_FUNC_CAPTURE); } static int ar8xxx_mib_flush(struct ar8xxx_priv *priv) { return ar8xxx_mib_op(priv, AR8216_MIB_FUNC_FLUSH); } static void ar8xxx_mib_fetch_port_stat(struct ar8xxx_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); base = priv->chip->reg_port_stats_start + priv->chip->reg_port_stats_length * 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 = ar8xxx_read(priv, base + mib->offset); if (mib->size == 2) { u64 hi; hi = ar8xxx_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 ar8xxx_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); } else { link->link = true; if (priv->get_port_link) { int err; err = priv->get_port_link(port); if (err >= 0) link->link = !!err; } } if (!link->link) return; link->duplex = !!(status & AR8216_PORT_STATUS_DUPLEX); link->tx_flow = !!(status & AR8216_PORT_STATUS_TXFLOW); link->rx_flow = !!(status & AR8216_PORT_STATUS_RXFLOW); if (link->aneg && link->duplex && priv->chip->read_port_eee_status) link->eee = priv->chip->read_port_eee_status(priv, port); 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 ar8xxx_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 ar8xxx_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; } int ar8216_wait_bit(struct ar8xxx_priv *priv, int reg, u32 mask, u32 val) { int timeout = 20; u32 t = 0; while (1) { t = ar8xxx_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 ar8xxx_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; ar8xxx_write(priv, AR8216_REG_VTU_DATA, val); } op |= AR8216_VTU_ACTIVE; ar8xxx_write(priv, AR8216_REG_VTU, op); } static void ar8216_vtu_flush(struct ar8xxx_priv *priv) { ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0); } static void ar8216_vtu_load_vlan(struct ar8xxx_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 ar8xxx_priv *priv) { int ret; ret = ar8216_wait_bit(priv, AR8216_REG_ATU_FUNC0, AR8216_ATU_ACTIVE, 0); if (!ret) ar8xxx_write(priv, AR8216_REG_ATU_FUNC0, AR8216_ATU_OP_FLUSH | AR8216_ATU_ACTIVE); return ret; } static int ar8216_atu_flush_port(struct ar8xxx_priv *priv, int port) { u32 t; int ret; ret = ar8216_wait_bit(priv, AR8216_REG_ATU_FUNC0, AR8216_ATU_ACTIVE, 0); if (!ret) { t = (port << AR8216_ATU_PORT_NUM_S) | AR8216_ATU_OP_FLUSH_PORT; t |= AR8216_ATU_ACTIVE; ar8xxx_write(priv, AR8216_REG_ATU_FUNC0, t); } return ret; } static u32 ar8216_read_port_status(struct ar8xxx_priv *priv, int port) { return ar8xxx_read(priv, AR8216_REG_PORT_STATUS(port)); } static void ar8216_setup_port(struct ar8xxx_priv *priv, int port, u32 members) { u32 header; u32 egress, ingress; u32 pvid; if (priv->vlan) { pvid = priv->vlan_id[priv->pvid[port]]; if (priv->vlan_tagged & (1 << port)) egress = AR8216_OUT_ADD_VLAN; else egress = AR8216_OUT_STRIP_VLAN; ingress = AR8216_IN_SECURE; } else { pvid = port; egress = AR8216_OUT_KEEP; ingress = AR8216_IN_PORT_ONLY; } if (chip_is_ar8216(priv) && priv->vlan && port == AR8216_PORT_CPU) header = AR8216_PORT_CTRL_HEADER; else header = 0; ar8xxx_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)); ar8xxx_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 ar8xxx_priv *priv) { if (priv->initialized) return 0; ar8xxx_phy_init(priv); priv->initialized = true; return 0; } static void ar8216_init_globals(struct ar8xxx_priv *priv) { /* standard atheros magic */ ar8xxx_write(priv, 0x38, 0xc000050e); ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CTRL, AR8216_GCTRL_MTU, 1518 + 8 + 2); } static void ar8216_init_port(struct ar8xxx_priv *priv, int port) { /* Enable port learning and tx */ ar8xxx_write(priv, AR8216_REG_PORT_CTRL(port), AR8216_PORT_CTRL_LEARN | (4 << AR8216_PORT_CTRL_STATE_S)); ar8xxx_write(priv, AR8216_REG_PORT_VLAN(port), 0); if (port == AR8216_PORT_CPU) { ar8xxx_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 { ar8xxx_write(priv, AR8216_REG_PORT_STATUS(port), AR8216_PORT_STATUS_LINK_AUTO); } } static void ar8216_wait_atu_ready(struct ar8xxx_priv *priv, u16 r2, u16 r1) { int timeout = 20; while (ar8xxx_mii_read32(priv, r2, r1) & AR8216_ATU_ACTIVE && --timeout) udelay(10); if (!timeout) pr_err("ar8216: timeout waiting for atu to become ready\n"); } static void ar8216_get_arl_entry(struct ar8xxx_priv *priv, struct arl_entry *a, u32 *status, enum arl_op op) { struct mii_bus *bus = priv->mii_bus; u16 r2, page; u16 r1_func0, r1_func1, r1_func2; u32 t, val0, val1, val2; int i; split_addr(AR8216_REG_ATU_FUNC0, &r1_func0, &r2, &page); r2 |= 0x10; r1_func1 = (AR8216_REG_ATU_FUNC1 >> 1) & 0x1e; r1_func2 = (AR8216_REG_ATU_FUNC2 >> 1) & 0x1e; switch (op) { case AR8XXX_ARL_INITIALIZE: /* all ATU registers are on the same page * therefore set page only once */ bus->write(bus, 0x18, 0, page); wait_for_page_switch(); ar8216_wait_atu_ready(priv, r2, r1_func0); ar8xxx_mii_write32(priv, r2, r1_func0, AR8216_ATU_OP_GET_NEXT); ar8xxx_mii_write32(priv, r2, r1_func1, 0); ar8xxx_mii_write32(priv, r2, r1_func2, 0); break; case AR8XXX_ARL_GET_NEXT: t = ar8xxx_mii_read32(priv, r2, r1_func0); t |= AR8216_ATU_ACTIVE; ar8xxx_mii_write32(priv, r2, r1_func0, t); ar8216_wait_atu_ready(priv, r2, r1_func0); val0 = ar8xxx_mii_read32(priv, r2, r1_func0); val1 = ar8xxx_mii_read32(priv, r2, r1_func1); val2 = ar8xxx_mii_read32(priv, r2, r1_func2); *status = (val2 & AR8216_ATU_STATUS) >> AR8216_ATU_STATUS_S; if (!*status) break; i = 0; t = AR8216_ATU_PORT0; while (!(val2 & t) && ++i < priv->dev.ports) t <<= 1; a->port = i; a->mac[0] = (val0 & AR8216_ATU_ADDR5) >> AR8216_ATU_ADDR5_S; a->mac[1] = (val0 & AR8216_ATU_ADDR4) >> AR8216_ATU_ADDR4_S; a->mac[2] = (val1 & AR8216_ATU_ADDR3) >> AR8216_ATU_ADDR3_S; a->mac[3] = (val1 & AR8216_ATU_ADDR2) >> AR8216_ATU_ADDR2_S; a->mac[4] = (val1 & AR8216_ATU_ADDR1) >> AR8216_ATU_ADDR1_S; a->mac[5] = (val1 & AR8216_ATU_ADDR0) >> AR8216_ATU_ADDR0_S; break; } } static void ar8236_setup_port(struct ar8xxx_priv *priv, int port, u32 members) { u32 egress, ingress; u32 pvid; if (priv->vlan) { pvid = priv->vlan_id[priv->pvid[port]]; if (priv->vlan_tagged & (1 << port)) egress = AR8216_OUT_ADD_VLAN; else egress = AR8216_OUT_STRIP_VLAN; ingress = AR8216_IN_SECURE; } else { pvid = port; egress = AR8216_OUT_KEEP; ingress = AR8216_IN_PORT_ONLY; } ar8xxx_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)); ar8xxx_rmw(priv, AR8236_REG_PORT_VLAN(port), AR8236_PORT_VLAN_DEFAULT_ID, (pvid << AR8236_PORT_VLAN_DEFAULT_ID_S)); ar8xxx_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 void ar8236_init_globals(struct ar8xxx_priv *priv) { /* enable jumbo frames */ ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CTRL, AR8316_GCTRL_MTU, 9018 + 8 + 2); /* enable cpu port to receive arp frames */ ar8xxx_reg_set(priv, AR8216_REG_ATU_CTRL, AR8236_ATU_CTRL_RES); /* enable cpu port to receive multicast and broadcast frames */ ar8xxx_reg_set(priv, AR8216_REG_FLOOD_MASK, AR8236_FM_CPU_BROADCAST_EN | AR8236_FM_CPU_BCAST_FWD_EN); /* Enable MIB counters */ ar8xxx_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 int ar8316_hw_init(struct ar8xxx_priv *priv) { u32 val, newval; val = ar8xxx_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; pr_info("ar8316: Using port 4 as PHY\n"); } else { newval = 0x01261be2; pr_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 */ pr_err("ar8316: unsupported mii mode: %d.\n", priv->phy->interface); return -EINVAL; } if (val == newval) goto out; ar8xxx_write(priv, AR8316_REG_POSTRIP, newval); if (priv->port4_phy && priv->phy->interface == PHY_INTERFACE_MODE_RGMII) { /* work around for phy4 rgmii mode */ ar8xxx_phy_dbg_write(priv, 4, 0x12, 0x480c); /* rx delay */ ar8xxx_phy_dbg_write(priv, 4, 0x0, 0x824e); /* tx delay */ ar8xxx_phy_dbg_write(priv, 4, 0x5, 0x3d47); msleep(1000); } ar8xxx_phy_init(priv); out: priv->initialized = true; return 0; } static void ar8316_init_globals(struct ar8xxx_priv *priv) { /* standard atheros magic */ ar8xxx_write(priv, 0x38, 0xc000050e); /* enable cpu port to receive multicast and broadcast frames */ ar8xxx_write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f); /* enable jumbo frames */ ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CTRL, AR8316_GCTRL_MTU, 9018 + 8 + 2); /* Enable MIB counters */ ar8xxx_rmw(priv, AR8216_REG_MIB_FUNC, AR8216_MIB_FUNC | AR8236_MIB_EN, (AR8216_MIB_FUNC_NO_OP << AR8216_MIB_FUNC_S) | AR8236_MIB_EN); } int ar8xxx_sw_set_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); priv->vlan = !!val->value.i; return 0; } int ar8xxx_sw_get_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); val->value.i = priv->vlan; return 0; } int ar8xxx_sw_set_pvid(struct switch_dev *dev, int port, int vlan) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); /* make sure no invalid PVIDs get set */ if (vlan >= dev->vlans) return -EINVAL; priv->pvid[port] = vlan; return 0; } int ar8xxx_sw_get_pvid(struct switch_dev *dev, int port, int *vlan) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); *vlan = priv->pvid[port]; return 0; } static int ar8xxx_sw_set_vid(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); priv->vlan_id[val->port_vlan] = val->value.i; return 0; } static int ar8xxx_sw_get_vid(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); val->value.i = priv->vlan_id[val->port_vlan]; return 0; } int ar8xxx_sw_get_port_link(struct switch_dev *dev, int port, struct switch_port_link *link) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); ar8216_read_port_link(priv, port, link); return 0; } static int ar8xxx_sw_get_ports(struct switch_dev *dev, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(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 ar8xxx_sw_set_ports(struct switch_dev *dev, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(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 void ar8216_set_mirror_regs(struct ar8xxx_priv *priv) { int port; /* reset all mirror registers */ ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CPUPORT, AR8216_GLOBAL_CPUPORT_MIRROR_PORT, (0xF << AR8216_GLOBAL_CPUPORT_MIRROR_PORT_S)); for (port = 0; port < AR8216_NUM_PORTS; port++) { ar8xxx_reg_clear(priv, AR8216_REG_PORT_CTRL(port), AR8216_PORT_CTRL_MIRROR_RX); ar8xxx_reg_clear(priv, AR8216_REG_PORT_CTRL(port), AR8216_PORT_CTRL_MIRROR_TX); } /* now enable mirroring if necessary */ if (priv->source_port >= AR8216_NUM_PORTS || priv->monitor_port >= AR8216_NUM_PORTS || priv->source_port == priv->monitor_port) { return; } ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CPUPORT, AR8216_GLOBAL_CPUPORT_MIRROR_PORT, (priv->monitor_port << AR8216_GLOBAL_CPUPORT_MIRROR_PORT_S)); if (priv->mirror_rx) ar8xxx_reg_set(priv, AR8216_REG_PORT_CTRL(priv->source_port), AR8216_PORT_CTRL_MIRROR_RX); if (priv->mirror_tx) ar8xxx_reg_set(priv, AR8216_REG_PORT_CTRL(priv->source_port), AR8216_PORT_CTRL_MIRROR_TX); } int ar8xxx_sw_hw_apply(struct switch_dev *dev) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(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++) { priv->chip->setup_port(priv, i, portmask[i]); } priv->chip->set_mirror_regs(priv); mutex_unlock(&priv->reg_mutex); return 0; } int ar8xxx_sw_reset_switch(struct switch_dev *dev) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); const struct ar8xxx_chip *chip = priv->chip; int i; mutex_lock(&priv->reg_mutex); memset(&priv->vlan, 0, sizeof(struct ar8xxx_priv) - offsetof(struct ar8xxx_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++) chip->init_port(priv, i); priv->mirror_rx = false; priv->mirror_tx = false; priv->source_port = 0; priv->monitor_port = 0; chip->init_globals(priv); mutex_unlock(&priv->reg_mutex); return chip->sw_hw_apply(dev); } int ar8xxx_sw_set_reset_mibs(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(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 = ar8xxx_mib_flush(priv); if (ret) goto unlock; ret = 0; unlock: mutex_unlock(&priv->mib_lock); return ret; } int ar8xxx_sw_set_mirror_rx_enable(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); mutex_lock(&priv->reg_mutex); priv->mirror_rx = !!val->value.i; priv->chip->set_mirror_regs(priv); mutex_unlock(&priv->reg_mutex); return 0; } int ar8xxx_sw_get_mirror_rx_enable(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); val->value.i = priv->mirror_rx; return 0; } int ar8xxx_sw_set_mirror_tx_enable(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); mutex_lock(&priv->reg_mutex); priv->mirror_tx = !!val->value.i; priv->chip->set_mirror_regs(priv); mutex_unlock(&priv->reg_mutex); return 0; } int ar8xxx_sw_get_mirror_tx_enable(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); val->value.i = priv->mirror_tx; return 0; } int ar8xxx_sw_set_mirror_monitor_port(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); mutex_lock(&priv->reg_mutex); priv->monitor_port = val->value.i; priv->chip->set_mirror_regs(priv); mutex_unlock(&priv->reg_mutex); return 0; } int ar8xxx_sw_get_mirror_monitor_port(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); val->value.i = priv->monitor_port; return 0; } int ar8xxx_sw_set_mirror_source_port(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); mutex_lock(&priv->reg_mutex); priv->source_port = val->value.i; priv->chip->set_mirror_regs(priv); mutex_unlock(&priv->reg_mutex); return 0; } int ar8xxx_sw_get_mirror_source_port(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); val->value.i = priv->source_port; return 0; } int ar8xxx_sw_set_port_reset_mib(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(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 = ar8xxx_mib_capture(priv); if (ret) goto unlock; ar8xxx_mib_fetch_port_stat(priv, port, true); ret = 0; unlock: mutex_unlock(&priv->mib_lock); return ret; } int ar8xxx_sw_get_port_mib(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(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 = ar8xxx_mib_capture(priv); if (ret) goto unlock; ar8xxx_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; } int ar8xxx_sw_get_arl_table(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val) { struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev); struct mii_bus *bus = priv->mii_bus; const struct ar8xxx_chip *chip = priv->chip; char *buf = priv->arl_buf; int i, j, k, len = 0; struct arl_entry *a, *a1; u32 status; if (!chip->get_arl_entry) return -EOPNOTSUPP; mutex_lock(&priv->reg_mutex); mutex_lock(&bus->mdio_lock); chip->get_arl_entry(priv, NULL, NULL, AR8XXX_ARL_INITIALIZE); for(i = 0; i < AR8XXX_NUM_ARL_RECORDS; ++i) { a = &priv->arl_table[i]; duplicate: chip->get_arl_entry(priv, a, &status, AR8XXX_ARL_GET_NEXT); if (!status) break; /* avoid duplicates * ARL table can include multiple valid entries * per MAC, just with differing status codes */ for (j = 0; j < i; ++j) { a1 = &priv->arl_table[j]; if (a->port == a1->port && !memcmp(a->mac, a1->mac, sizeof(a->mac))) goto duplicate; } } mutex_unlock(&bus->mdio_lock); len += snprintf(buf + len, sizeof(priv->arl_buf) - len, "address resolution table\n"); if (i == AR8XXX_NUM_ARL_RECORDS) len += snprintf(buf + len, sizeof(priv->arl_buf) - len, "Too many entries found, displaying the first %d only!\n", AR8XXX_NUM_ARL_RECORDS); for (j = 0; j < priv->dev.ports; ++j) { for (k = 0; k < i; ++k) { a = &priv->arl_table[k]; if (a->port != j) continue; len += snprintf(buf + len, sizeof(priv->arl_buf) - len, "Port %d: MAC %02x:%02x:%02x:%02x:%02x:%02x\n", j, a->mac[5], a->mac[4], a->mac[3], a->mac[2], a->mac[1], a->mac[0]); } } val->value.s = buf; val->len = len; mutex_unlock(&priv->reg_mutex); return 0; } static const struct switch_attr ar8xxx_sw_attr_globals[] = { { .type = SWITCH_TYPE_INT, .name = "enable_vlan", .description = "Enable VLAN mode", .set = ar8xxx_sw_set_vlan, .get = ar8xxx_sw_get_vlan, .max = 1 }, { .type = SWITCH_TYPE_NOVAL, .name = "reset_mibs", .description = "Reset all MIB counters", .set = ar8xxx_sw_set_reset_mibs, }, { .type = SWITCH_TYPE_INT, .name = "enable_mirror_rx", .description = "Enable mirroring of RX packets", .set = ar8xxx_sw_set_mirror_rx_enable, .get = ar8xxx_sw_get_mirror_rx_enable, .max = 1 }, { .type = SWITCH_TYPE_INT, .name = "enable_mirror_tx", .description = "Enable mirroring of TX packets", .set = ar8xxx_sw_set_mirror_tx_enable, .get = ar8xxx_sw_get_mirror_tx_enable, .max = 1 }, { .type = SWITCH_TYPE_INT, .name = "mirror_monitor_port", .description = "Mirror monitor port", .set = ar8xxx_sw_set_mirror_monitor_port, .get = ar8xxx_sw_get_mirror_monitor_port, .max = AR8216_NUM_PORTS - 1 }, { .type = SWITCH_TYPE_INT, .name = "mirror_source_port", .description = "Mirror source port", .set = ar8xxx_sw_set_mirror_source_port, .get = ar8xxx_sw_get_mirror_source_port, .max = AR8216_NUM_PORTS - 1 }, { .type = SWITCH_TYPE_STRING, .name = "arl_table", .description = "Get ARL table", .set = NULL, .get = ar8xxx_sw_get_arl_table, }, }; const struct switch_attr ar8xxx_sw_attr_port[2] = { { .type = SWITCH_TYPE_NOVAL, .name = "reset_mib", .description = "Reset single port MIB counters", .set = ar8xxx_sw_set_port_reset_mib, }, { .type = SWITCH_TYPE_STRING, .name = "mib", .description = "Get port's MIB counters", .set = NULL, .get = ar8xxx_sw_get_port_mib, }, }; const struct switch_attr ar8xxx_sw_attr_vlan[1] = { { .type = SWITCH_TYPE_INT, .name = "vid", .description = "VLAN ID (0-4094)", .set = ar8xxx_sw_set_vid, .get = ar8xxx_sw_get_vid, .max = 4094, }, }; static const struct switch_dev_ops ar8xxx_sw_ops = { .attr_global = { .attr = ar8xxx_sw_attr_globals, .n_attr = ARRAY_SIZE(ar8xxx_sw_attr_globals), }, .attr_port = { .attr = ar8xxx_sw_attr_port, .n_attr = ARRAY_SIZE(ar8xxx_sw_attr_port), }, .attr_vlan = { .attr = ar8xxx_sw_attr_vlan, .n_attr = ARRAY_SIZE(ar8xxx_sw_attr_vlan), }, .get_port_pvid = ar8xxx_sw_get_pvid, .set_port_pvid = ar8xxx_sw_set_pvid, .get_vlan_ports = ar8xxx_sw_get_ports, .set_vlan_ports = ar8xxx_sw_set_ports, .apply_config = ar8xxx_sw_hw_apply, .reset_switch = ar8xxx_sw_reset_switch, .get_port_link = ar8xxx_sw_get_port_link, }; static const struct ar8xxx_chip ar8216_chip = { .caps = AR8XXX_CAP_MIB_COUNTERS, .reg_port_stats_start = 0x19000, .reg_port_stats_length = 0xa0, .name = "Atheros AR8216", .ports = AR8216_NUM_PORTS, .vlans = AR8216_NUM_VLANS, .swops = &ar8xxx_sw_ops, .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, .atu_flush_port = ar8216_atu_flush_port, .vtu_flush = ar8216_vtu_flush, .vtu_load_vlan = ar8216_vtu_load_vlan, .set_mirror_regs = ar8216_set_mirror_regs, .get_arl_entry = ar8216_get_arl_entry, .sw_hw_apply = ar8xxx_sw_hw_apply, .num_mibs = ARRAY_SIZE(ar8216_mibs), .mib_decs = ar8216_mibs, .mib_func = AR8216_REG_MIB_FUNC }; static const struct ar8xxx_chip ar8236_chip = { .caps = AR8XXX_CAP_MIB_COUNTERS, .reg_port_stats_start = 0x20000, .reg_port_stats_length = 0x100, .name = "Atheros AR8236", .ports = AR8216_NUM_PORTS, .vlans = AR8216_NUM_VLANS, .swops = &ar8xxx_sw_ops, .hw_init = ar8216_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, .atu_flush_port = ar8216_atu_flush_port, .vtu_flush = ar8216_vtu_flush, .vtu_load_vlan = ar8216_vtu_load_vlan, .set_mirror_regs = ar8216_set_mirror_regs, .get_arl_entry = ar8216_get_arl_entry, .sw_hw_apply = ar8xxx_sw_hw_apply, .num_mibs = ARRAY_SIZE(ar8236_mibs), .mib_decs = ar8236_mibs, .mib_func = AR8216_REG_MIB_FUNC }; static const struct ar8xxx_chip ar8316_chip = { .caps = AR8XXX_CAP_GIGE | AR8XXX_CAP_MIB_COUNTERS, .reg_port_stats_start = 0x20000, .reg_port_stats_length = 0x100, .name = "Atheros AR8316", .ports = AR8216_NUM_PORTS, .vlans = AR8X16_MAX_VLANS, .swops = &ar8xxx_sw_ops, .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, .atu_flush_port = ar8216_atu_flush_port, .vtu_flush = ar8216_vtu_flush, .vtu_load_vlan = ar8216_vtu_load_vlan, .set_mirror_regs = ar8216_set_mirror_regs, .get_arl_entry = ar8216_get_arl_entry, .sw_hw_apply = ar8xxx_sw_hw_apply, .num_mibs = ARRAY_SIZE(ar8236_mibs), .mib_decs = ar8236_mibs, .mib_func = AR8216_REG_MIB_FUNC }; static int ar8xxx_id_chip(struct ar8xxx_priv *priv) { u32 val; u16 id; int i; val = ar8xxx_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 = ar8xxx_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->chip = &ar8327_chip; break; case AR8XXX_VER_AR8337: priv->chip = &ar8337_chip; break; default: pr_err("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 ar8xxx_priv *priv; int err; priv = container_of(work, struct ar8xxx_priv, mib_work.work); mutex_lock(&priv->mib_lock); err = ar8xxx_mib_capture(priv); if (err) goto next_port; ar8xxx_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 ar8xxx_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 ar8xxx_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 ar8xxx_priv *priv) { if (!ar8xxx_has_mib_counters(priv)) return; cancel_delayed_work(&priv->mib_work); } static struct ar8xxx_priv * ar8xxx_create(void) { struct ar8xxx_priv *priv; priv = kzalloc(sizeof(struct ar8xxx_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 ar8xxx_priv *priv) { if (priv->chip && priv->chip->cleanup) priv->chip->cleanup(priv); kfree(priv->chip_data); kfree(priv->mib_stats); kfree(priv); } static int ar8xxx_probe_switch(struct ar8xxx_priv *priv) { const struct ar8xxx_chip *chip; struct switch_dev *swdev; int ret; ret = ar8xxx_id_chip(priv); if (ret) return ret; chip = priv->chip; swdev = &priv->dev; swdev->cpu_port = AR8216_PORT_CPU; swdev->name = chip->name; swdev->vlans = chip->vlans; swdev->ports = chip->ports; swdev->ops = chip->swops; ret = ar8xxx_mib_init(priv); if (ret) return ret; return 0; } static int ar8xxx_start(struct ar8xxx_priv *priv) { int ret; priv->init = true; ret = priv->chip->hw_init(priv); if (ret) return ret; ret = ar8xxx_sw_reset_switch(&priv->dev); if (ret) return ret; priv->init = false; ar8xxx_mib_start(priv); return 0; } static int ar8xxx_phy_config_init(struct phy_device *phydev) { struct ar8xxx_priv *priv = phydev->priv; struct net_device *dev = phydev->attached_dev; int ret; if (WARN_ON(!priv)) return -ENODEV; if (priv->chip->config_at_probe) return ar8xxx_phy_check_aneg(phydev); priv->phy = phydev; if (phydev->addr != 0) { if (chip_is_ar8316(priv)) { /* switch device has been initialized, reinit */ priv->dev.ports = (AR8216_NUM_PORTS - 1); priv->initialized = false; priv->port4_phy = true; ar8316_hw_init(priv); return 0; } return 0; } ret = ar8xxx_start(priv); if (ret) return ret; /* 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; } return 0; } static bool ar8xxx_check_link_states(struct ar8xxx_priv *priv) { bool link_new, changed = false; u32 status; int i; mutex_lock(&priv->reg_mutex); for (i = 0; i < priv->dev.ports; i++) { status = priv->chip->read_port_status(priv, i); link_new = !!(status & AR8216_PORT_STATUS_LINK_UP); if (link_new == priv->link_up[i]) continue; priv->link_up[i] = link_new; changed = true; dev_info(&priv->phy->dev, "Port %d is %s\n", i, link_new ? "up" : "down"); } if (changed) priv->chip->atu_flush(priv); mutex_unlock(&priv->reg_mutex); return changed; } static int ar8xxx_phy_read_status(struct phy_device *phydev) { struct ar8xxx_priv *priv = phydev->priv; struct switch_port_link link; /* check for link changes and flush ATU * if a change was detected */ if (phydev->state == PHY_CHANGELINK) ar8xxx_check_link_states(priv); 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; phydev->state = PHY_RUNNING; netif_carrier_on(phydev->attached_dev); phydev->adjust_link(phydev->attached_dev); return 0; } static int ar8xxx_phy_config_aneg(struct phy_device *phydev) { if (phydev->addr == 0) return 0; return genphy_config_aneg(phydev); } static const u32 ar8xxx_phy_ids[] = { 0x004dd033, 0x004dd034, /* AR8327 */ 0x004dd036, /* AR8337 */ 0x004dd041, 0x004dd042, 0x004dd043, /* AR8236 */ }; 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 ar8xxx_phy_probe(struct phy_device *phydev) { struct ar8xxx_priv *priv; struct switch_dev *swdev; int ret; /* skip PHYs at unused adresses */ if (phydev->addr != 0 && phydev->addr != 4) return -ENODEV; if (!ar8xxx_is_possible(phydev->bus)) return -ENODEV; mutex_lock(&ar8xxx_dev_list_lock); list_for_each_entry(priv, &ar8xxx_dev_list, list) if (priv->mii_bus == phydev->bus) goto found; priv = ar8xxx_create(); if (priv == NULL) { ret = -ENOMEM; goto unlock; } priv->mii_bus = phydev->bus; ret = ar8xxx_probe_switch(priv); if (ret) goto free_priv; swdev = &priv->dev; swdev->alias = dev_name(&priv->mii_bus->dev); ret = register_switch(swdev, NULL); if (ret) goto free_priv; pr_info("%s: %s rev. %u switch registered on %s\n", swdev->devname, swdev->name, priv->chip_rev, dev_name(&priv->mii_bus->dev)); found: priv->use_count++; if (phydev->addr == 0) { if (ar8xxx_has_gige(priv)) { phydev->supported = SUPPORTED_1000baseT_Full; phydev->advertising = ADVERTISED_1000baseT_Full; } else { phydev->supported = SUPPORTED_100baseT_Full; phydev->advertising = ADVERTISED_100baseT_Full; } if (priv->chip->config_at_probe) { priv->phy = phydev; ret = ar8xxx_start(priv); if (ret) goto err_unregister_switch; } } else { if (ar8xxx_has_gige(priv)) { phydev->supported |= SUPPORTED_1000baseT_Full; phydev->advertising |= ADVERTISED_1000baseT_Full; } } phydev->priv = priv; list_add(&priv->list, &ar8xxx_dev_list); mutex_unlock(&ar8xxx_dev_list_lock); return 0; err_unregister_switch: if (--priv->use_count) goto unlock; unregister_switch(&priv->dev); free_priv: ar8xxx_free(priv); unlock: mutex_unlock(&ar8xxx_dev_list_lock); return ret; } static void ar8xxx_phy_detach(struct phy_device *phydev) { struct net_device *dev = phydev->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 ar8xxx_phy_remove(struct phy_device *phydev) { struct ar8xxx_priv *priv = phydev->priv; if (WARN_ON(!priv)) return; phydev->priv = NULL; if (--priv->use_count > 0) return; mutex_lock(&ar8xxx_dev_list_lock); list_del(&priv->list); mutex_unlock(&ar8xxx_dev_list_lock); unregister_switch(&priv->dev); ar8xxx_mib_stop(priv); ar8xxx_free(priv); } #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0) static int ar8xxx_phy_soft_reset(struct phy_device *phydev) { /* we don't need an extra reset */ return 0; } #endif static struct phy_driver ar8xxx_phy_driver = { .phy_id = 0x004d0000, .name = "Atheros AR8216/AR8236/AR8316", .phy_id_mask = 0xffff0000, .features = PHY_BASIC_FEATURES, .probe = ar8xxx_phy_probe, .remove = ar8xxx_phy_remove, .detach = ar8xxx_phy_detach, .config_init = ar8xxx_phy_config_init, .config_aneg = ar8xxx_phy_config_aneg, .read_status = ar8xxx_phy_read_status, #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0) .soft_reset = ar8xxx_phy_soft_reset, #endif .driver = { .owner = THIS_MODULE }, }; int __init ar8xxx_init(void) { return phy_driver_register(&ar8xxx_phy_driver); } void __exit ar8xxx_exit(void) { phy_driver_unregister(&ar8xxx_phy_driver); } module_init(ar8xxx_init); module_exit(ar8xxx_exit); MODULE_LICENSE("GPL");