diff options
author | Christian Marangi <ansuelsmth@gmail.com> | 2022-07-13 22:53:50 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2022-07-15 11:57:13 +0100 |
commit | 4bbaf764e1e1786eb937fdb62172f656f512e116 (patch) | |
tree | 59fc4b8b337a9a3a388b4f99e598cd2c6432e442 /drivers/net/dsa/qca8k.c | |
parent | 88b3822cdf2f9d1c5f569cd89a9e51a1ab223214 (diff) |
net: dsa: qca8k: move driver to qca dir
Move qca8k driver to qca dir in preparation for code split and
introduction of ipq4019 switch based on qca8k.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/qca8k.c')
-rw-r--r-- | drivers/net/dsa/qca8k.c | 3299 |
1 files changed, 0 insertions, 3299 deletions
diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c deleted file mode 100644 index 1cbb05b0323f..000000000000 --- a/drivers/net/dsa/qca8k.c +++ /dev/null @@ -1,3299 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2009 Felix Fietkau <nbd@nbd.name> - * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> - * Copyright (c) 2015, 2019, The Linux Foundation. All rights reserved. - * Copyright (c) 2016 John Crispin <john@phrozen.org> - */ - -#include <linux/module.h> -#include <linux/phy.h> -#include <linux/netdevice.h> -#include <linux/bitfield.h> -#include <linux/regmap.h> -#include <net/dsa.h> -#include <linux/of_net.h> -#include <linux/of_mdio.h> -#include <linux/of_platform.h> -#include <linux/if_bridge.h> -#include <linux/mdio.h> -#include <linux/phylink.h> -#include <linux/gpio/consumer.h> -#include <linux/etherdevice.h> -#include <linux/dsa/tag_qca.h> - -#include "qca8k.h" - -#define MIB_DESC(_s, _o, _n) \ - { \ - .size = (_s), \ - .offset = (_o), \ - .name = (_n), \ - } - -static const struct qca8k_mib_desc ar8327_mib[] = { - MIB_DESC(1, 0x00, "RxBroad"), - MIB_DESC(1, 0x04, "RxPause"), - MIB_DESC(1, 0x08, "RxMulti"), - MIB_DESC(1, 0x0c, "RxFcsErr"), - MIB_DESC(1, 0x10, "RxAlignErr"), - MIB_DESC(1, 0x14, "RxRunt"), - MIB_DESC(1, 0x18, "RxFragment"), - MIB_DESC(1, 0x1c, "Rx64Byte"), - MIB_DESC(1, 0x20, "Rx128Byte"), - MIB_DESC(1, 0x24, "Rx256Byte"), - MIB_DESC(1, 0x28, "Rx512Byte"), - MIB_DESC(1, 0x2c, "Rx1024Byte"), - MIB_DESC(1, 0x30, "Rx1518Byte"), - MIB_DESC(1, 0x34, "RxMaxByte"), - MIB_DESC(1, 0x38, "RxTooLong"), - MIB_DESC(2, 0x3c, "RxGoodByte"), - MIB_DESC(2, 0x44, "RxBadByte"), - MIB_DESC(1, 0x4c, "RxOverFlow"), - MIB_DESC(1, 0x50, "Filtered"), - MIB_DESC(1, 0x54, "TxBroad"), - MIB_DESC(1, 0x58, "TxPause"), - MIB_DESC(1, 0x5c, "TxMulti"), - MIB_DESC(1, 0x60, "TxUnderRun"), - MIB_DESC(1, 0x64, "Tx64Byte"), - MIB_DESC(1, 0x68, "Tx128Byte"), - MIB_DESC(1, 0x6c, "Tx256Byte"), - MIB_DESC(1, 0x70, "Tx512Byte"), - MIB_DESC(1, 0x74, "Tx1024Byte"), - MIB_DESC(1, 0x78, "Tx1518Byte"), - MIB_DESC(1, 0x7c, "TxMaxByte"), - MIB_DESC(1, 0x80, "TxOverSize"), - MIB_DESC(2, 0x84, "TxByte"), - MIB_DESC(1, 0x8c, "TxCollision"), - MIB_DESC(1, 0x90, "TxAbortCol"), - MIB_DESC(1, 0x94, "TxMultiCol"), - MIB_DESC(1, 0x98, "TxSingleCol"), - MIB_DESC(1, 0x9c, "TxExcDefer"), - MIB_DESC(1, 0xa0, "TxDefer"), - MIB_DESC(1, 0xa4, "TxLateCol"), - MIB_DESC(1, 0xa8, "RXUnicast"), - MIB_DESC(1, 0xac, "TXUnicast"), -}; - -static void -qca8k_split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page) -{ - regaddr >>= 1; - *r1 = regaddr & 0x1e; - - regaddr >>= 5; - *r2 = regaddr & 0x7; - - regaddr >>= 3; - *page = regaddr & 0x3ff; -} - -static int -qca8k_set_lo(struct qca8k_priv *priv, int phy_id, u32 regnum, u16 lo) -{ - u16 *cached_lo = &priv->mdio_cache.lo; - struct mii_bus *bus = priv->bus; - int ret; - - if (lo == *cached_lo) - return 0; - - ret = bus->write(bus, phy_id, regnum, lo); - if (ret < 0) - dev_err_ratelimited(&bus->dev, - "failed to write qca8k 32bit lo register\n"); - - *cached_lo = lo; - return 0; -} - -static int -qca8k_set_hi(struct qca8k_priv *priv, int phy_id, u32 regnum, u16 hi) -{ - u16 *cached_hi = &priv->mdio_cache.hi; - struct mii_bus *bus = priv->bus; - int ret; - - if (hi == *cached_hi) - return 0; - - ret = bus->write(bus, phy_id, regnum, hi); - if (ret < 0) - dev_err_ratelimited(&bus->dev, - "failed to write qca8k 32bit hi register\n"); - - *cached_hi = hi; - return 0; -} - -static int -qca8k_mii_read32(struct mii_bus *bus, int phy_id, u32 regnum, u32 *val) -{ - int ret; - - ret = bus->read(bus, phy_id, regnum); - if (ret >= 0) { - *val = ret; - ret = bus->read(bus, phy_id, regnum + 1); - *val |= ret << 16; - } - - if (ret < 0) { - dev_err_ratelimited(&bus->dev, - "failed to read qca8k 32bit register\n"); - *val = 0; - return ret; - } - - return 0; -} - -static void -qca8k_mii_write32(struct qca8k_priv *priv, int phy_id, u32 regnum, u32 val) -{ - u16 lo, hi; - int ret; - - lo = val & 0xffff; - hi = (u16)(val >> 16); - - ret = qca8k_set_lo(priv, phy_id, regnum, lo); - if (ret >= 0) - ret = qca8k_set_hi(priv, phy_id, regnum + 1, hi); -} - -static int -qca8k_set_page(struct qca8k_priv *priv, u16 page) -{ - u16 *cached_page = &priv->mdio_cache.page; - struct mii_bus *bus = priv->bus; - int ret; - - if (page == *cached_page) - return 0; - - ret = bus->write(bus, 0x18, 0, page); - if (ret < 0) { - dev_err_ratelimited(&bus->dev, - "failed to set qca8k page\n"); - return ret; - } - - *cached_page = page; - usleep_range(1000, 2000); - return 0; -} - -static int -qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val) -{ - return regmap_read(priv->regmap, reg, val); -} - -static int -qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val) -{ - return regmap_write(priv->regmap, reg, val); -} - -static int -qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val) -{ - return regmap_update_bits(priv->regmap, reg, mask, write_val); -} - -static void qca8k_rw_reg_ack_handler(struct dsa_switch *ds, struct sk_buff *skb) -{ - struct qca8k_mgmt_eth_data *mgmt_eth_data; - struct qca8k_priv *priv = ds->priv; - struct qca_mgmt_ethhdr *mgmt_ethhdr; - u8 len, cmd; - - mgmt_ethhdr = (struct qca_mgmt_ethhdr *)skb_mac_header(skb); - mgmt_eth_data = &priv->mgmt_eth_data; - - cmd = FIELD_GET(QCA_HDR_MGMT_CMD, mgmt_ethhdr->command); - len = FIELD_GET(QCA_HDR_MGMT_LENGTH, mgmt_ethhdr->command); - - /* Make sure the seq match the requested packet */ - if (mgmt_ethhdr->seq == mgmt_eth_data->seq) - mgmt_eth_data->ack = true; - - if (cmd == MDIO_READ) { - mgmt_eth_data->data[0] = mgmt_ethhdr->mdio_data; - - /* Get the rest of the 12 byte of data. - * The read/write function will extract the requested data. - */ - if (len > QCA_HDR_MGMT_DATA1_LEN) - memcpy(mgmt_eth_data->data + 1, skb->data, - QCA_HDR_MGMT_DATA2_LEN); - } - - complete(&mgmt_eth_data->rw_done); -} - -static struct sk_buff *qca8k_alloc_mdio_header(enum mdio_cmd cmd, u32 reg, u32 *val, - int priority, unsigned int len) -{ - struct qca_mgmt_ethhdr *mgmt_ethhdr; - unsigned int real_len; - struct sk_buff *skb; - u32 *data2; - u16 hdr; - - skb = dev_alloc_skb(QCA_HDR_MGMT_PKT_LEN); - if (!skb) - return NULL; - - /* Max value for len reg is 15 (0xf) but the switch actually return 16 byte - * Actually for some reason the steps are: - * 0: nothing - * 1-4: first 4 byte - * 5-6: first 12 byte - * 7-15: all 16 byte - */ - if (len == 16) - real_len = 15; - else - real_len = len; - - skb_reset_mac_header(skb); - skb_set_network_header(skb, skb->len); - - mgmt_ethhdr = skb_push(skb, QCA_HDR_MGMT_HEADER_LEN + QCA_HDR_LEN); - - hdr = FIELD_PREP(QCA_HDR_XMIT_VERSION, QCA_HDR_VERSION); - hdr |= FIELD_PREP(QCA_HDR_XMIT_PRIORITY, priority); - hdr |= QCA_HDR_XMIT_FROM_CPU; - hdr |= FIELD_PREP(QCA_HDR_XMIT_DP_BIT, BIT(0)); - hdr |= FIELD_PREP(QCA_HDR_XMIT_CONTROL, QCA_HDR_XMIT_TYPE_RW_REG); - - mgmt_ethhdr->command = FIELD_PREP(QCA_HDR_MGMT_ADDR, reg); - mgmt_ethhdr->command |= FIELD_PREP(QCA_HDR_MGMT_LENGTH, real_len); - mgmt_ethhdr->command |= FIELD_PREP(QCA_HDR_MGMT_CMD, cmd); - mgmt_ethhdr->command |= FIELD_PREP(QCA_HDR_MGMT_CHECK_CODE, - QCA_HDR_MGMT_CHECK_CODE_VAL); - - if (cmd == MDIO_WRITE) - mgmt_ethhdr->mdio_data = *val; - - mgmt_ethhdr->hdr = htons(hdr); - - data2 = skb_put_zero(skb, QCA_HDR_MGMT_DATA2_LEN + QCA_HDR_MGMT_PADDING_LEN); - if (cmd == MDIO_WRITE && len > QCA_HDR_MGMT_DATA1_LEN) - memcpy(data2, val + 1, len - QCA_HDR_MGMT_DATA1_LEN); - - return skb; -} - -static void qca8k_mdio_header_fill_seq_num(struct sk_buff *skb, u32 seq_num) -{ - struct qca_mgmt_ethhdr *mgmt_ethhdr; - - mgmt_ethhdr = (struct qca_mgmt_ethhdr *)skb->data; - mgmt_ethhdr->seq = FIELD_PREP(QCA_HDR_MGMT_SEQ_NUM, seq_num); -} - -static int qca8k_read_eth(struct qca8k_priv *priv, u32 reg, u32 *val, int len) -{ - struct qca8k_mgmt_eth_data *mgmt_eth_data = &priv->mgmt_eth_data; - struct sk_buff *skb; - bool ack; - int ret; - - skb = qca8k_alloc_mdio_header(MDIO_READ, reg, NULL, - QCA8K_ETHERNET_MDIO_PRIORITY, len); - if (!skb) - return -ENOMEM; - - mutex_lock(&mgmt_eth_data->mutex); - - /* Check mgmt_master if is operational */ - if (!priv->mgmt_master) { - kfree_skb(skb); - mutex_unlock(&mgmt_eth_data->mutex); - return -EINVAL; - } - - skb->dev = priv->mgmt_master; - - reinit_completion(&mgmt_eth_data->rw_done); - - /* Increment seq_num and set it in the mdio pkt */ - mgmt_eth_data->seq++; - qca8k_mdio_header_fill_seq_num(skb, mgmt_eth_data->seq); - mgmt_eth_data->ack = false; - - dev_queue_xmit(skb); - - ret = wait_for_completion_timeout(&mgmt_eth_data->rw_done, - msecs_to_jiffies(QCA8K_ETHERNET_TIMEOUT)); - - *val = mgmt_eth_data->data[0]; - if (len > QCA_HDR_MGMT_DATA1_LEN) - memcpy(val + 1, mgmt_eth_data->data + 1, len - QCA_HDR_MGMT_DATA1_LEN); - - ack = mgmt_eth_data->ack; - - mutex_unlock(&mgmt_eth_data->mutex); - - if (ret <= 0) - return -ETIMEDOUT; - - if (!ack) - return -EINVAL; - - return 0; -} - -static int qca8k_write_eth(struct qca8k_priv *priv, u32 reg, u32 *val, int len) -{ - struct qca8k_mgmt_eth_data *mgmt_eth_data = &priv->mgmt_eth_data; - struct sk_buff *skb; - bool ack; - int ret; - - skb = qca8k_alloc_mdio_header(MDIO_WRITE, reg, val, - QCA8K_ETHERNET_MDIO_PRIORITY, len); - if (!skb) - return -ENOMEM; - - mutex_lock(&mgmt_eth_data->mutex); - - /* Check mgmt_master if is operational */ - if (!priv->mgmt_master) { - kfree_skb(skb); - mutex_unlock(&mgmt_eth_data->mutex); - return -EINVAL; - } - - skb->dev = priv->mgmt_master; - - reinit_completion(&mgmt_eth_data->rw_done); - - /* Increment seq_num and set it in the mdio pkt */ - mgmt_eth_data->seq++; - qca8k_mdio_header_fill_seq_num(skb, mgmt_eth_data->seq); - mgmt_eth_data->ack = false; - - dev_queue_xmit(skb); - - ret = wait_for_completion_timeout(&mgmt_eth_data->rw_done, - msecs_to_jiffies(QCA8K_ETHERNET_TIMEOUT)); - - ack = mgmt_eth_data->ack; - - mutex_unlock(&mgmt_eth_data->mutex); - - if (ret <= 0) - return -ETIMEDOUT; - - if (!ack) - return -EINVAL; - - return 0; -} - -static int -qca8k_regmap_update_bits_eth(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val) -{ - u32 val = 0; - int ret; - - ret = qca8k_read_eth(priv, reg, &val, sizeof(val)); - if (ret) - return ret; - - val &= ~mask; - val |= write_val; - - return qca8k_write_eth(priv, reg, &val, sizeof(val)); -} - -static int -qca8k_bulk_read(struct qca8k_priv *priv, u32 reg, u32 *val, int len) -{ - int i, count = len / sizeof(u32), ret; - - if (priv->mgmt_master && !qca8k_read_eth(priv, reg, val, len)) - return 0; - - for (i = 0; i < count; i++) { - ret = regmap_read(priv->regmap, reg + (i * 4), val + i); - if (ret < 0) - return ret; - } - - return 0; -} - -static int -qca8k_bulk_write(struct qca8k_priv *priv, u32 reg, u32 *val, int len) -{ - int i, count = len / sizeof(u32), ret; - u32 tmp; - - if (priv->mgmt_master && !qca8k_write_eth(priv, reg, val, len)) - return 0; - - for (i = 0; i < count; i++) { - tmp = val[i]; - - ret = regmap_write(priv->regmap, reg + (i * 4), tmp); - if (ret < 0) - return ret; - } - - return 0; -} - -static int -qca8k_regmap_read(void *ctx, uint32_t reg, uint32_t *val) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ctx; - struct mii_bus *bus = priv->bus; - u16 r1, r2, page; - int ret; - - if (!qca8k_read_eth(priv, reg, val, sizeof(*val))) - return 0; - - qca8k_split_addr(reg, &r1, &r2, &page); - - mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); - - ret = qca8k_set_page(priv, page); - if (ret < 0) - goto exit; - - ret = qca8k_mii_read32(bus, 0x10 | r2, r1, val); - -exit: - mutex_unlock(&bus->mdio_lock); - return ret; -} - -static int -qca8k_regmap_write(void *ctx, uint32_t reg, uint32_t val) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ctx; - struct mii_bus *bus = priv->bus; - u16 r1, r2, page; - int ret; - - if (!qca8k_write_eth(priv, reg, &val, sizeof(val))) - return 0; - - qca8k_split_addr(reg, &r1, &r2, &page); - - mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); - - ret = qca8k_set_page(priv, page); - if (ret < 0) - goto exit; - - qca8k_mii_write32(priv, 0x10 | r2, r1, val); - -exit: - mutex_unlock(&bus->mdio_lock); - return ret; -} - -static int -qca8k_regmap_update_bits(void *ctx, uint32_t reg, uint32_t mask, uint32_t write_val) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ctx; - struct mii_bus *bus = priv->bus; - u16 r1, r2, page; - u32 val; - int ret; - - if (!qca8k_regmap_update_bits_eth(priv, reg, mask, write_val)) - return 0; - - qca8k_split_addr(reg, &r1, &r2, &page); - - mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); - - ret = qca8k_set_page(priv, page); - if (ret < 0) - goto exit; - - ret = qca8k_mii_read32(bus, 0x10 | r2, r1, &val); - if (ret < 0) - goto exit; - - val &= ~mask; - val |= write_val; - qca8k_mii_write32(priv, 0x10 | r2, r1, val); - -exit: - mutex_unlock(&bus->mdio_lock); - - return ret; -} - -static const struct regmap_range qca8k_readable_ranges[] = { - regmap_reg_range(0x0000, 0x00e4), /* Global control */ - regmap_reg_range(0x0100, 0x0168), /* EEE control */ - regmap_reg_range(0x0200, 0x0270), /* Parser control */ - regmap_reg_range(0x0400, 0x0454), /* ACL */ - regmap_reg_range(0x0600, 0x0718), /* Lookup */ - regmap_reg_range(0x0800, 0x0b70), /* QM */ - regmap_reg_range(0x0c00, 0x0c80), /* PKT */ - regmap_reg_range(0x0e00, 0x0e98), /* L3 */ - regmap_reg_range(0x1000, 0x10ac), /* MIB - Port0 */ - regmap_reg_range(0x1100, 0x11ac), /* MIB - Port1 */ - regmap_reg_range(0x1200, 0x12ac), /* MIB - Port2 */ - regmap_reg_range(0x1300, 0x13ac), /* MIB - Port3 */ - regmap_reg_range(0x1400, 0x14ac), /* MIB - Port4 */ - regmap_reg_range(0x1500, 0x15ac), /* MIB - Port5 */ - regmap_reg_range(0x1600, 0x16ac), /* MIB - Port6 */ - -}; - -static const struct regmap_access_table qca8k_readable_table = { - .yes_ranges = qca8k_readable_ranges, - .n_yes_ranges = ARRAY_SIZE(qca8k_readable_ranges), -}; - -static struct regmap_config qca8k_regmap_config = { - .reg_bits = 16, - .val_bits = 32, - .reg_stride = 4, - .max_register = 0x16ac, /* end MIB - Port6 range */ - .reg_read = qca8k_regmap_read, - .reg_write = qca8k_regmap_write, - .reg_update_bits = qca8k_regmap_update_bits, - .rd_table = &qca8k_readable_table, - .disable_locking = true, /* Locking is handled by qca8k read/write */ - .cache_type = REGCACHE_NONE, /* Explicitly disable CACHE */ -}; - -static int -qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask) -{ - u32 val; - - return regmap_read_poll_timeout(priv->regmap, reg, val, !(val & mask), 0, - QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC); -} - -static int -qca8k_fdb_read(struct qca8k_priv *priv, struct qca8k_fdb *fdb) -{ - u32 reg[3]; - int ret; - - /* load the ARL table into an array */ - ret = qca8k_bulk_read(priv, QCA8K_REG_ATU_DATA0, reg, sizeof(reg)); - if (ret) - return ret; - - /* vid - 83:72 */ - fdb->vid = FIELD_GET(QCA8K_ATU_VID_MASK, reg[2]); - /* aging - 67:64 */ - fdb->aging = FIELD_GET(QCA8K_ATU_STATUS_MASK, reg[2]); - /* portmask - 54:48 */ - fdb->port_mask = FIELD_GET(QCA8K_ATU_PORT_MASK, reg[1]); - /* mac - 47:0 */ - fdb->mac[0] = FIELD_GET(QCA8K_ATU_ADDR0_MASK, reg[1]); - fdb->mac[1] = FIELD_GET(QCA8K_ATU_ADDR1_MASK, reg[1]); - fdb->mac[2] = FIELD_GET(QCA8K_ATU_ADDR2_MASK, reg[0]); - fdb->mac[3] = FIELD_GET(QCA8K_ATU_ADDR3_MASK, reg[0]); - fdb->mac[4] = FIELD_GET(QCA8K_ATU_ADDR4_MASK, reg[0]); - fdb->mac[5] = FIELD_GET(QCA8K_ATU_ADDR5_MASK, reg[0]); - - return 0; -} - -static void -qca8k_fdb_write(struct qca8k_priv *priv, u16 vid, u8 port_mask, const u8 *mac, - u8 aging) -{ - u32 reg[3] = { 0 }; - - /* vid - 83:72 */ - reg[2] = FIELD_PREP(QCA8K_ATU_VID_MASK, vid); - /* aging - 67:64 */ - reg[2] |= FIELD_PREP(QCA8K_ATU_STATUS_MASK, aging); - /* portmask - 54:48 */ - reg[1] = FIELD_PREP(QCA8K_ATU_PORT_MASK, port_mask); - /* mac - 47:0 */ - reg[1] |= FIELD_PREP(QCA8K_ATU_ADDR0_MASK, mac[0]); - reg[1] |= FIELD_PREP(QCA8K_ATU_ADDR1_MASK, mac[1]); - reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR2_MASK, mac[2]); - reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR3_MASK, mac[3]); - reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR4_MASK, mac[4]); - reg[0] |= FIELD_PREP(QCA8K_ATU_ADDR5_MASK, mac[5]); - - /* load the array into the ARL table */ - qca8k_bulk_write(priv, QCA8K_REG_ATU_DATA0, reg, sizeof(reg)); -} - -static int -qca8k_fdb_access(struct qca8k_priv *priv, enum qca8k_fdb_cmd cmd, int port) -{ - u32 reg; - int ret; - - /* Set the command and FDB index */ - reg = QCA8K_ATU_FUNC_BUSY; - reg |= cmd; - if (port >= 0) { - reg |= QCA8K_ATU_FUNC_PORT_EN; - reg |= FIELD_PREP(QCA8K_ATU_FUNC_PORT_MASK, port); - } - - /* Write the function register triggering the table access */ - ret = qca8k_write(priv, QCA8K_REG_ATU_FUNC, reg); - if (ret) - return ret; - - /* wait for completion */ - ret = qca8k_busy_wait(priv, QCA8K_REG_ATU_FUNC, QCA8K_ATU_FUNC_BUSY); - if (ret) - return ret; - - /* Check for table full violation when adding an entry */ - if (cmd == QCA8K_FDB_LOAD) { - ret = qca8k_read(priv, QCA8K_REG_ATU_FUNC, ®); - if (ret < 0) - return ret; - if (reg & QCA8K_ATU_FUNC_FULL) - return -1; - } - - return 0; -} - -static int -qca8k_fdb_next(struct qca8k_priv *priv, struct qca8k_fdb *fdb, int port) -{ - int ret; - - qca8k_fdb_write(priv, fdb->vid, fdb->port_mask, fdb->mac, fdb->aging); - ret = qca8k_fdb_access(priv, QCA8K_FDB_NEXT, port); - if (ret < 0) - return ret; - - return qca8k_fdb_read(priv, fdb); -} - -static int -qca8k_fdb_add(struct qca8k_priv *priv, const u8 *mac, u16 port_mask, - u16 vid, u8 aging) -{ - int ret; - - mutex_lock(&priv->reg_mutex); - qca8k_fdb_write(priv, vid, port_mask, mac, aging); - ret = qca8k_fdb_access(priv, QCA8K_FDB_LOAD, -1); - mutex_unlock(&priv->reg_mutex); - - return ret; -} - -static int -qca8k_fdb_del(struct qca8k_priv *priv, const u8 *mac, u16 port_mask, u16 vid) -{ - int ret; - - mutex_lock(&priv->reg_mutex); - qca8k_fdb_write(priv, vid, port_mask, mac, 0); - ret = qca8k_fdb_access(priv, QCA8K_FDB_PURGE, -1); - mutex_unlock(&priv->reg_mutex); - - return ret; -} - -static void -qca8k_fdb_flush(struct qca8k_priv *priv) -{ - mutex_lock(&priv->reg_mutex); - qca8k_fdb_access(priv, QCA8K_FDB_FLUSH, -1); - mutex_unlock(&priv->reg_mutex); -} - -static int -qca8k_fdb_search_and_insert(struct qca8k_priv *priv, u8 port_mask, - const u8 *mac, u16 vid) -{ - struct qca8k_fdb fdb = { 0 }; - int ret; - - mutex_lock(&priv->reg_mutex); - - qca8k_fdb_write(priv, vid, 0, mac, 0); - ret = qca8k_fdb_access(priv, QCA8K_FDB_SEARCH, -1); - if (ret < 0) - goto exit; - - ret = qca8k_fdb_read(priv, &fdb); - if (ret < 0) - goto exit; - - /* Rule exist. Delete first */ - if (!fdb.aging) { - ret = qca8k_fdb_access(priv, QCA8K_FDB_PURGE, -1); - if (ret) - goto exit; - } - - /* Add port to fdb portmask */ - fdb.port_mask |= port_mask; - - qca8k_fdb_write(priv, vid, fdb.port_mask, mac, fdb.aging); - ret = qca8k_fdb_access(priv, QCA8K_FDB_LOAD, -1); - -exit: - mutex_unlock(&priv->reg_mutex); - return ret; -} - -static int -qca8k_fdb_search_and_del(struct qca8k_priv *priv, u8 port_mask, - const u8 *mac, u16 vid) -{ - struct qca8k_fdb fdb = { 0 }; - int ret; - - mutex_lock(&priv->reg_mutex); - - qca8k_fdb_write(priv, vid, 0, mac, 0); - ret = qca8k_fdb_access(priv, QCA8K_FDB_SEARCH, -1); - if (ret < 0) - goto exit; - - /* Rule doesn't exist. Why delete? */ - if (!fdb.aging) { - ret = -EINVAL; - goto exit; - } - - ret = qca8k_fdb_access(priv, QCA8K_FDB_PURGE, -1); - if (ret) - goto exit; - - /* Only port in the rule is this port. Don't re insert */ - if (fdb.port_mask == port_mask) - goto exit; - - /* Remove port from port mask */ - fdb.port_mask &= ~port_mask; - - qca8k_fdb_write(priv, vid, fdb.port_mask, mac, fdb.aging); - ret = qca8k_fdb_access(priv, QCA8K_FDB_LOAD, -1); - -exit: - mutex_unlock(&priv->reg_mutex); - return ret; -} - -static int -qca8k_vlan_access(struct qca8k_priv *priv, enum qca8k_vlan_cmd cmd, u16 vid) -{ - u32 reg; - int ret; - - /* Set the command and VLAN index */ - reg = QCA8K_VTU_FUNC1_BUSY; - reg |= cmd; - reg |= FIELD_PREP(QCA8K_VTU_FUNC1_VID_MASK, vid); - - /* Write the function register triggering the table access */ - ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC1, reg); - if (ret) - return ret; - - /* wait for completion */ - ret = qca8k_busy_wait(priv, QCA8K_REG_VTU_FUNC1, QCA8K_VTU_FUNC1_BUSY); - if (ret) - return ret; - - /* Check for table full violation when adding an entry */ - if (cmd == QCA8K_VLAN_LOAD) { - ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC1, ®); - if (ret < 0) - return ret; - if (reg & QCA8K_VTU_FUNC1_FULL) - return -ENOMEM; - } - - return 0; -} - -static int -qca8k_vlan_add(struct qca8k_priv *priv, u8 port, u16 vid, bool untagged) -{ - u32 reg; - int ret; - - /* - We do the right thing with VLAN 0 and treat it as untagged while - preserving the tag on egress. - */ - if (vid == 0) - return 0; - - mutex_lock(&priv->reg_mutex); - ret = qca8k_vlan_access(priv, QCA8K_VLAN_READ, vid); - if (ret < 0) - goto out; - - ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC0, ®); - if (ret < 0) - goto out; - reg |= QCA8K_VTU_FUNC0_VALID | QCA8K_VTU_FUNC0_IVL_EN; - reg &= ~QCA8K_VTU_FUNC0_EG_MODE_PORT_MASK(port); - if (untagged) - reg |= QCA8K_VTU_FUNC0_EG_MODE_PORT_UNTAG(port); - else - reg |= QCA8K_VTU_FUNC0_EG_MODE_PORT_TAG(port); - - ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC0, reg); - if (ret) - goto out; - ret = qca8k_vlan_access(priv, QCA8K_VLAN_LOAD, vid); - -out: - mutex_unlock(&priv->reg_mutex); - - return ret; -} - -static int -qca8k_vlan_del(struct qca8k_priv *priv, u8 port, u16 vid) -{ - u32 reg, mask; - int ret, i; - bool del; - - mutex_lock(&priv->reg_mutex); - ret = qca8k_vlan_access(priv, QCA8K_VLAN_READ, vid); - if (ret < 0) - goto out; - - ret = qca8k_read(priv, QCA8K_REG_VTU_FUNC0, ®); - if (ret < 0) - goto out; - reg &= ~QCA8K_VTU_FUNC0_EG_MODE_PORT_MASK(port); - reg |= QCA8K_VTU_FUNC0_EG_MODE_PORT_NOT(port); - - /* Check if we're the last member to be removed */ - del = true; - for (i = 0; i < QCA8K_NUM_PORTS; i++) { - mask = QCA8K_VTU_FUNC0_EG_MODE_PORT_NOT(i); - - if ((reg & mask) != mask) { - del = false; - break; - } - } - - if (del) { - ret = qca8k_vlan_access(priv, QCA8K_VLAN_PURGE, vid); - } else { - ret = qca8k_write(priv, QCA8K_REG_VTU_FUNC0, reg); - if (ret) - goto out; - ret = qca8k_vlan_access(priv, QCA8K_VLAN_LOAD, vid); - } - -out: - mutex_unlock(&priv->reg_mutex); - - return ret; -} - -static int -qca8k_mib_init(struct qca8k_priv *priv) -{ - int ret; - - mutex_lock(&priv->reg_mutex); - ret = regmap_update_bits(priv->regmap, QCA8K_REG_MIB, - QCA8K_MIB_FUNC | QCA8K_MIB_BUSY, - FIELD_PREP(QCA8K_MIB_FUNC, QCA8K_MIB_FLUSH) | - QCA8K_MIB_BUSY); - if (ret) - goto exit; - - ret = qca8k_busy_wait(priv, QCA8K_REG_MIB, QCA8K_MIB_BUSY); - if (ret) - goto exit; - - ret = regmap_set_bits(priv->regmap, QCA8K_REG_MIB, QCA8K_MIB_CPU_KEEP); - if (ret) - goto exit; - - ret = qca8k_write(priv, QCA8K_REG_MODULE_EN, QCA8K_MODULE_EN_MIB); - -exit: - mutex_unlock(&priv->reg_mutex); - return ret; -} - -static void -qca8k_port_set_status(struct qca8k_priv *priv, int port, int enable) -{ - u32 mask = QCA8K_PORT_STATUS_TXMAC | QCA8K_PORT_STATUS_RXMAC; - - /* Port 0 and 6 have no internal PHY */ - if (port > 0 && port < 6) - mask |= QCA8K_PORT_STATUS_LINK_AUTO; - - if (enable) - regmap_set_bits(priv->regmap, QCA8K_REG_PORT_STATUS(port), mask); - else - regmap_clear_bits(priv->regmap, QCA8K_REG_PORT_STATUS(port), mask); -} - -static int -qca8k_phy_eth_busy_wait(struct qca8k_mgmt_eth_data *mgmt_eth_data, - struct sk_buff *read_skb, u32 *val) -{ - struct sk_buff *skb = skb_copy(read_skb, GFP_KERNEL); - bool ack; - int ret; - - reinit_completion(&mgmt_eth_data->rw_done); - - /* Increment seq_num and set it in the copy pkt */ - mgmt_eth_data->seq++; - qca8k_mdio_header_fill_seq_num(skb, mgmt_eth_data->seq); - mgmt_eth_data->ack = false; - - dev_queue_xmit(skb); - - ret = wait_for_completion_timeout(&mgmt_eth_data->rw_done, - QCA8K_ETHERNET_TIMEOUT); - - ack = mgmt_eth_data->ack; - - if (ret <= 0) - return -ETIMEDOUT; - - if (!ack) - return -EINVAL; - - *val = mgmt_eth_data->data[0]; - - return 0; -} - -static int -qca8k_phy_eth_command(struct qca8k_priv *priv, bool read, int phy, - int regnum, u16 data) -{ - struct sk_buff *write_skb, *clear_skb, *read_skb; - struct qca8k_mgmt_eth_data *mgmt_eth_data; - u32 write_val, clear_val = 0, val; - struct net_device *mgmt_master; - int ret, ret1; - bool ack; - - if (regnum >= QCA8K_MDIO_MASTER_MAX_REG) - return -EINVAL; - - mgmt_eth_data = &priv->mgmt_eth_data; - - write_val = QCA8K_MDIO_MASTER_BUSY | QCA8K_MDIO_MASTER_EN | - QCA8K_MDIO_MASTER_PHY_ADDR(phy) | - QCA8K_MDIO_MASTER_REG_ADDR(regnum); - - if (read) { - write_val |= QCA8K_MDIO_MASTER_READ; - } else { - write_val |= QCA8K_MDIO_MASTER_WRITE; - write_val |= QCA8K_MDIO_MASTER_DATA(data); - } - - /* Prealloc all the needed skb before the lock */ - write_skb = qca8k_alloc_mdio_header(MDIO_WRITE, QCA8K_MDIO_MASTER_CTRL, &write_val, - QCA8K_ETHERNET_PHY_PRIORITY, sizeof(write_val)); - if (!write_skb) - return -ENOMEM; - - clear_skb = qca8k_alloc_mdio_header(MDIO_WRITE, QCA8K_MDIO_MASTER_CTRL, &clear_val, - QCA8K_ETHERNET_PHY_PRIORITY, sizeof(clear_val)); - if (!clear_skb) { - ret = -ENOMEM; - goto err_clear_skb; - } - - read_skb = qca8k_alloc_mdio_header(MDIO_READ, QCA8K_MDIO_MASTER_CTRL, &clear_val, - QCA8K_ETHERNET_PHY_PRIORITY, sizeof(clear_val)); - if (!read_skb) { - ret = -ENOMEM; - goto err_read_skb; - } - - /* Actually start the request: - * 1. Send mdio master packet - * 2. Busy Wait for mdio master command - * 3. Get the data if we are reading - * 4. Reset the mdio master (even with error) - */ - mutex_lock(&mgmt_eth_data->mutex); - - /* Check if mgmt_master is operational */ - mgmt_master = priv->mgmt_master; - if (!mgmt_master) { - mutex_unlock(&mgmt_eth_data->mutex); - ret = -EINVAL; - goto err_mgmt_master; - } - - read_skb->dev = mgmt_master; - clear_skb->dev = mgmt_master; - write_skb->dev = mgmt_master; - - reinit_completion(&mgmt_eth_data->rw_done); - - /* Increment seq_num and set it in the write pkt */ - mgmt_eth_data->seq++; - qca8k_mdio_header_fill_seq_num(write_skb, mgmt_eth_data->seq); - mgmt_eth_data->ack = false; - - dev_queue_xmit(write_skb); - - ret = wait_for_completion_timeout(&mgmt_eth_data->rw_done, - QCA8K_ETHERNET_TIMEOUT); - - ack = mgmt_eth_data->ack; - - if (ret <= 0) { - ret = -ETIMEDOUT; - kfree_skb(read_skb); - goto exit; - } - - if (!ack) { - ret = -EINVAL; - kfree_skb(read_skb); - goto exit; - } - - ret = read_poll_timeout(qca8k_phy_eth_busy_wait, ret1, - !(val & QCA8K_MDIO_MASTER_BUSY), 0, - QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC, false, - mgmt_eth_data, read_skb, &val); - - if (ret < 0 && ret1 < 0) { - ret = ret1; - goto exit; - } - - if (read) { - reinit_completion(&mgmt_eth_data->rw_done); - - /* Increment seq_num and set it in the read pkt */ - mgmt_eth_data->seq++; - qca8k_mdio_header_fill_seq_num(read_skb, mgmt_eth_data->seq); - mgmt_eth_data->ack = false; - - dev_queue_xmit(read_skb); - - ret = wait_for_completion_timeout(&mgmt_eth_data->rw_done, - QCA8K_ETHERNET_TIMEOUT); - - ack = mgmt_eth_data->ack; - - if (ret <= 0) { - ret = -ETIMEDOUT; - goto exit; - } - - if (!ack) { - ret = -EINVAL; - goto exit; - } - - ret = mgmt_eth_data->data[0] & QCA8K_MDIO_MASTER_DATA_MASK; - } else { - kfree_skb(read_skb); - } -exit: - reinit_completion(&mgmt_eth_data->rw_done); - - /* Increment seq_num and set it in the clear pkt */ - mgmt_eth_data->seq++; - qca8k_mdio_header_fill_seq_num(clear_skb, mgmt_eth_data->seq); - mgmt_eth_data->ack = false; - - dev_queue_xmit(clear_skb); - - wait_for_completion_timeout(&mgmt_eth_data->rw_done, - QCA8K_ETHERNET_TIMEOUT); - - mutex_unlock(&mgmt_eth_data->mutex); - - return ret; - - /* Error handling before lock */ -err_mgmt_master: - kfree_skb(read_skb); -err_read_skb: - kfree_skb(clear_skb); -err_clear_skb: - kfree_skb(write_skb); - - return ret; -} - -static u32 -qca8k_port_to_phy(int port) -{ - /* From Andrew Lunn: - * Port 0 has no internal phy. - * Port 1 has an internal PHY at MDIO address 0. - * Port 2 has an internal PHY at MDIO address 1. - * ... - * Port 5 has an internal PHY at MDIO address 4. - * Port 6 has no internal PHY. - */ - - return port - 1; -} - -static int -qca8k_mdio_busy_wait(struct mii_bus *bus, u32 reg, u32 mask) -{ - u16 r1, r2, page; - u32 val; - int ret, ret1; - - qca8k_split_addr(reg, &r1, &r2, &page); - - ret = read_poll_timeout(qca8k_mii_read32, ret1, !(val & mask), 0, - QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC, false, - bus, 0x10 | r2, r1, &val); - - /* Check if qca8k_read has failed for a different reason - * before returnting -ETIMEDOUT - */ - if (ret < 0 && ret1 < 0) - return ret1; - - return ret; -} - -static int -qca8k_mdio_write(struct qca8k_priv *priv, int phy, int regnum, u16 data) -{ - struct mii_bus *bus = priv->bus; - u16 r1, r2, page; - u32 val; - int ret; - - if (regnum >= QCA8K_MDIO_MASTER_MAX_REG) - return -EINVAL; - - val = QCA8K_MDIO_MASTER_BUSY | QCA8K_MDIO_MASTER_EN | - QCA8K_MDIO_MASTER_WRITE | QCA8K_MDIO_MASTER_PHY_ADDR(phy) | - QCA8K_MDIO_MASTER_REG_ADDR(regnum) | - QCA8K_MDIO_MASTER_DATA(data); - - qca8k_split_addr(QCA8K_MDIO_MASTER_CTRL, &r1, &r2, &page); - - mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); - - ret = qca8k_set_page(priv, page); - if (ret) - goto exit; - - qca8k_mii_write32(priv, 0x10 | r2, r1, val); - - ret = qca8k_mdio_busy_wait(bus, QCA8K_MDIO_MASTER_CTRL, - QCA8K_MDIO_MASTER_BUSY); - -exit: - /* even if the busy_wait timeouts try to clear the MASTER_EN */ - qca8k_mii_write32(priv, 0x10 | r2, r1, 0); - - mutex_unlock(&bus->mdio_lock); - - return ret; -} - -static int -qca8k_mdio_read(struct qca8k_priv *priv, int phy, int regnum) -{ - struct mii_bus *bus = priv->bus; - u16 r1, r2, page; - u32 val; - int ret; - - if (regnum >= QCA8K_MDIO_MASTER_MAX_REG) - return -EINVAL; - - val = QCA8K_MDIO_MASTER_BUSY | QCA8K_MDIO_MASTER_EN | - QCA8K_MDIO_MASTER_READ | QCA8K_MDIO_MASTER_PHY_ADDR(phy) | - QCA8K_MDIO_MASTER_REG_ADDR(regnum); - - qca8k_split_addr(QCA8K_MDIO_MASTER_CTRL, &r1, &r2, &page); - - mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED); - - ret = qca8k_set_page(priv, page); - if (ret) - goto exit; - - qca8k_mii_write32(priv, 0x10 | r2, r1, val); - - ret = qca8k_mdio_busy_wait(bus, QCA8K_MDIO_MASTER_CTRL, - QCA8K_MDIO_MASTER_BUSY); - if (ret) - goto exit; - - ret = qca8k_mii_read32(bus, 0x10 | r2, r1, &val); - -exit: - /* even if the busy_wait timeouts try to clear the MASTER_EN */ - qca8k_mii_write32(priv, 0x10 | r2, r1, 0); - - mutex_unlock(&bus->mdio_lock); - - if (ret >= 0) - ret = val & QCA8K_MDIO_MASTER_DATA_MASK; - - return ret; -} - -static int -qca8k_internal_mdio_write(struct mii_bus *slave_bus, int phy, int regnum, u16 data) -{ - struct qca8k_priv *priv = slave_bus->priv; - int ret; - - /* Use mdio Ethernet when available, fallback to legacy one on error */ - ret = qca8k_phy_eth_command(priv, false, phy, regnum, data); - if (!ret) - return 0; - - return qca8k_mdio_write(priv, phy, regnum, data); -} - -static int -qca8k_internal_mdio_read(struct mii_bus *slave_bus, int phy, int regnum) -{ - struct qca8k_priv *priv = slave_bus->priv; - int ret; - - /* Use mdio Ethernet when available, fallback to legacy one on error */ - ret = qca8k_phy_eth_command(priv, true, phy, regnum, 0); - if (ret >= 0) - return ret; - - ret = qca8k_mdio_read(priv, phy, regnum); - - if (ret < 0) - return 0xffff; - - return ret; -} - -static int -qca8k_legacy_mdio_write(struct mii_bus *slave_bus, int port, int regnum, u16 data) -{ - port = qca8k_port_to_phy(port) % PHY_MAX_ADDR; - - return qca8k_internal_mdio_write(slave_bus, port, regnum, data); -} - -static int -qca8k_legacy_mdio_read(struct mii_bus *slave_bus, int port, int regnum) -{ - port = qca8k_port_to_phy(port) % PHY_MAX_ADDR; - - return qca8k_internal_mdio_read(slave_bus, port, regnum); -} - -static int -qca8k_mdio_register(struct qca8k_priv *priv) -{ - struct dsa_switch *ds = priv->ds; - struct device_node *mdio; - struct mii_bus *bus; - - bus = devm_mdiobus_alloc(ds->dev); - if (!bus) - return -ENOMEM; - - bus->priv = (void *)priv; - snprintf(bus->id, MII_BUS_ID_SIZE, "qca8k-%d.%d", - ds->dst->index, ds->index); - bus->parent = ds->dev; - bus->phy_mask = ~ds->phys_mii_mask; - ds->slave_mii_bus = bus; - - /* Check if the devicetree declare the port:phy mapping */ - mdio = of_get_child_by_name(priv->dev->of_node, "mdio"); - if (of_device_is_available(mdio)) { - bus->name = "qca8k slave mii"; - bus->read = qca8k_internal_mdio_read; - bus->write = qca8k_internal_mdio_write; - return devm_of_mdiobus_register(priv->dev, bus, mdio); - } - - /* If a mapping can't be found the legacy mapping is used, - * using the qca8k_port_to_phy function - */ - bus->name = "qca8k-legacy slave mii"; - bus->read = qca8k_legacy_mdio_read; - bus->write = qca8k_legacy_mdio_write; - return devm_mdiobus_register(priv->dev, bus); -} - -static int -qca8k_setup_mdio_bus(struct qca8k_priv *priv) -{ - u32 internal_mdio_mask = 0, external_mdio_mask = 0, reg; - struct device_node *ports, *port; - phy_interface_t mode; - int err; - - ports = of_get_child_by_name(priv->dev->of_node, "ports"); - if (!ports) - ports = of_get_child_by_name(priv->dev->of_node, "ethernet-ports"); - - if (!ports) - return -EINVAL; - - for_each_available_child_of_node(ports, port) { - err = of_property_read_u32(port, "reg", ®); - if (err) { - of_node_put(port); - of_node_put(ports); - return err; - } - - if (!dsa_is_user_port(priv->ds, reg)) - continue; - - of_get_phy_mode(port, &mode); - - if (of_property_read_bool(port, "phy-handle") && - mode != PHY_INTERFACE_MODE_INTERNAL) - external_mdio_mask |= BIT(reg); - else - internal_mdio_mask |= BIT(reg); - } - - of_node_put(ports); - if (!external_mdio_mask && !internal_mdio_mask) { - dev_err(priv->dev, "no PHYs are defined.\n"); - return -EINVAL; - } - - /* The QCA8K_MDIO_MASTER_EN Bit, which grants access to PHYs through - * the MDIO_MASTER register also _disconnects_ the external MDC - * passthrough to the internal PHYs. It's not possible to use both - * configurations at the same time! - * - * Because this came up during the review process: - * If the external mdio-bus driver is capable magically disabling - * the QCA8K_MDIO_MASTER_EN and mutex/spin-locking out the qca8k's - * accessors for the time being, it would be possible to pull this - * off. - */ - if (!!external_mdio_mask && !!internal_mdio_mask) { - dev_err(priv->dev, "either internal or external mdio bus configuration is supported.\n"); - return -EINVAL; - } - - if (external_mdio_mask) { - /* Make sure to disable the internal mdio bus in cases - * a dt-overlay and driver reload changed the configuration - */ - - return regmap_clear_bits(priv->regmap, QCA8K_MDIO_MASTER_CTRL, - QCA8K_MDIO_MASTER_EN); - } - - return qca8k_mdio_register(priv); -} - -static int -qca8k_setup_mac_pwr_sel(struct qca8k_priv *priv) -{ - u32 mask = 0; - int ret = 0; - - /* SoC specific settings for ipq8064. - * If more device require this consider adding - * a dedicated binding. - */ - if (of_machine_is_compatible("qcom,ipq8064")) - mask |= QCA8K_MAC_PWR_RGMII0_1_8V; - - /* SoC specific settings for ipq8065 */ - if (of_machine_is_compatible("qcom,ipq8065")) - mask |= QCA8K_MAC_PWR_RGMII1_1_8V; - - if (mask) { - ret = qca8k_rmw(priv, QCA8K_REG_MAC_PWR_SEL, - QCA8K_MAC_PWR_RGMII0_1_8V | - QCA8K_MAC_PWR_RGMII1_1_8V, - mask); - } - - return ret; -} - -static int qca8k_find_cpu_port(struct dsa_switch *ds) -{ - struct qca8k_priv *priv = ds->priv; - - /* Find the connected cpu port. Valid port are 0 or 6 */ - if (dsa_is_cpu_port(ds, 0)) - return 0; - - dev_dbg(priv->dev, "port 0 is not the CPU port. Checking port 6"); - - if (dsa_is_cpu_port(ds, 6)) - return 6; - - return -EINVAL; -} - -static int -qca8k_setup_of_pws_reg(struct qca8k_priv *priv) -{ - struct device_node *node = priv->dev->of_node; - const struct qca8k_match_data *data; - u32 val = 0; - int ret; - - /* QCA8327 require to set to the correct mode. - * His bigger brother QCA8328 have the 172 pin layout. - * Should be applied by default but we set this just to make sure. - */ - if (priv->switch_id == QCA8K_ID_QCA8327) { - data = of_device_get_match_data(priv->dev); - - /* Set the correct package of 148 pin for QCA8327 */ - if (data->reduced_package) - val |= QCA8327_PWS_PACKAGE148_EN; - - ret = qca8k_rmw(priv, QCA8K_REG_PWS, QCA8327_PWS_PACKAGE148_EN, - val); - if (ret) - return ret; - } - - if (of_property_read_bool(node, "qca,ignore-power-on-sel")) - val |= QCA8K_PWS_POWER_ON_SEL; - - if (of_property_read_bool(node, "qca,led-open-drain")) { - if (!(val & QCA8K_PWS_POWER_ON_SEL)) { - dev_err(priv->dev, "qca,led-open-drain require qca,ignore-power-on-sel to be set."); - return -EINVAL; - } - - val |= QCA8K_PWS_LED_OPEN_EN_CSR; - } - - return qca8k_rmw(priv, QCA8K_REG_PWS, - QCA8K_PWS_LED_OPEN_EN_CSR | QCA8K_PWS_POWER_ON_SEL, - val); -} - -static int -qca8k_parse_port_config(struct qca8k_priv *priv) -{ - int port, cpu_port_index = -1, ret; - struct device_node *port_dn; - phy_interface_t mode; - struct dsa_port *dp; - u32 delay; - - /* We have 2 CPU port. Check them */ - for (port = 0; port < QCA8K_NUM_PORTS; port++) { - /* Skip every other port */ - if (port != 0 && port != 6) - continue; - - dp = dsa_to_port(priv->ds, port); - port_dn = dp->dn; - cpu_port_index++; - - if (!of_device_is_available(port_dn)) - continue; - - ret = of_get_phy_mode(port_dn, &mode); - if (ret) - continue; - - switch (mode) { - case PHY_INTERFACE_MODE_RGMII: - case PHY_INTERFACE_MODE_RGMII_ID: - case PHY_INTERFACE_MODE_RGMII_TXID: - case PHY_INTERFACE_MODE_RGMII_RXID: - case PHY_INTERFACE_MODE_SGMII: - delay = 0; - - if (!of_property_read_u32(port_dn, "tx-internal-delay-ps", &delay)) - /* Switch regs accept value in ns, convert ps to ns */ - delay = delay / 1000; - else if (mode == PHY_INTERFACE_MODE_RGMII_ID || - mode == PHY_INTERFACE_MODE_RGMII_TXID) - delay = 1; - - if (!FIELD_FIT(QCA8K_PORT_PAD_RGMII_TX_DELAY_MASK, delay)) { - dev_err(priv->dev, "rgmii tx delay is limited to a max value of 3ns, setting to the max value"); - delay = 3; - } - - priv->ports_config.rgmii_tx_delay[cpu_port_index] = delay; - - delay = 0; - - if (!of_property_read_u32(port_dn, "rx-internal-delay-ps", &delay)) - /* Switch regs accept value in ns, convert ps to ns */ - delay = delay / 1000; - else if (mode == PHY_INTERFACE_MODE_RGMII_ID || - mode == PHY_INTERFACE_MODE_RGMII_RXID) - delay = 2; - - if (!FIELD_FIT(QCA8K_PORT_PAD_RGMII_RX_DELAY_MASK, delay)) { - dev_err(priv->dev, "rgmii rx delay is limited to a max value of 3ns, setting to the max value"); - delay = 3; - } - - priv->ports_config.rgmii_rx_delay[cpu_port_index] = delay; - - /* Skip sgmii parsing for rgmii* mode */ - if (mode == PHY_INTERFACE_MODE_RGMII || - mode == PHY_INTERFACE_MODE_RGMII_ID || - mode == PHY_INTERFACE_MODE_RGMII_TXID || - mode == PHY_INTERFACE_MODE_RGMII_RXID) - break; - - if (of_property_read_bool(port_dn, "qca,sgmii-txclk-falling-edge")) - priv->ports_config.sgmii_tx_clk_falling_edge = true; - - if (of_property_read_bool(port_dn, "qca,sgmii-rxclk-falling-edge")) - priv->ports_config.sgmii_rx_clk_falling_edge = true; - - if (of_property_read_bool(port_dn, "qca,sgmii-enable-pll")) { - priv->ports_config.sgmii_enable_pll = true; - - if (priv->switch_id == QCA8K_ID_QCA8327) { - dev_err(priv->dev, "SGMII PLL should NOT be enabled for qca8327. Aborting enabling"); - priv->ports_config.sgmii_enable_pll = false; - } - - if (priv->switch_revision < 2) - dev_warn(priv->dev, "SGMII PLL should NOT be enabled for qca8337 with revision 2 or more."); - } - - break; - default: - continue; - } - } - - return 0; -} - -static void -qca8k_mac_config_setup_internal_delay(struct qca8k_priv *priv, int cpu_port_index, - u32 reg) -{ - u32 delay, val = 0; - int ret; - - /* Delay can be declared in 3 different way. - * Mode to rgmii and internal-delay standard binding defined - * rgmii-id or rgmii-tx/rx phy mode set. - * The parse logic set a delay different than 0 only when one - * of the 3 different way is used. In all other case delay is - * not enabled. With ID or TX/RXID delay is enabled and set - * to the default and recommended value. - */ - if (priv->ports_config.rgmii_tx_delay[cpu_port_index]) { - delay = priv->ports_config.rgmii_tx_delay[cpu_port_index]; - - val |= QCA8K_PORT_PAD_RGMII_TX_DELAY(delay) | - QCA8K_PORT_PAD_RGMII_TX_DELAY_EN; - } - - if (priv->ports_config.rgmii_rx_delay[cpu_port_index]) { - delay = priv->ports_config.rgmii_rx_delay[cpu_port_index]; - - val |= QCA8K_PORT_PAD_RGMII_RX_DELAY(delay) | - QCA8K_PORT_PAD_RGMII_RX_DELAY_EN; - } - - /* Set RGMII delay based on the selected values */ - ret = qca8k_rmw(priv, reg, - QCA8K_PORT_PAD_RGMII_TX_DELAY_MASK | - QCA8K_PORT_PAD_RGMII_RX_DELAY_MASK | - QCA8K_PORT_PAD_RGMII_TX_DELAY_EN | - QCA8K_PORT_PAD_RGMII_RX_DELAY_EN, - val); - if (ret) - dev_err(priv->dev, "Failed to set internal delay for CPU port%d", - cpu_port_index == QCA8K_CPU_PORT0 ? 0 : 6); -} - -static struct phylink_pcs * -qca8k_phylink_mac_select_pcs(struct dsa_switch *ds, int port, - phy_interface_t interface) -{ - struct qca8k_priv *priv = ds->priv; - struct phylink_pcs *pcs = NULL; - - switch (interface) { - case PHY_INTERFACE_MODE_SGMII: - case PHY_INTERFACE_MODE_1000BASEX: - switch (port) { - case 0: - pcs = &priv->pcs_port_0.pcs; - break; - - case 6: - pcs = &priv->pcs_port_6.pcs; - break; - } - break; - - default: - break; - } - - return pcs; -} - -static void -qca8k_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode, - const struct phylink_link_state *state) -{ - struct qca8k_priv *priv = ds->priv; - int cpu_port_index; - u32 reg; - - switch (port) { - case 0: /* 1st CPU port */ - if (state->interface != PHY_INTERFACE_MODE_RGMII && - state->interface != PHY_INTERFACE_MODE_RGMII_ID && - state->interface != PHY_INTERFACE_MODE_RGMII_TXID && - state->interface != PHY_INTERFACE_MODE_RGMII_RXID && - state->interface != PHY_INTERFACE_MODE_SGMII) - return; - - reg = QCA8K_REG_PORT0_PAD_CTRL; - cpu_port_index = QCA8K_CPU_PORT0; - break; - case 1: - case 2: - case 3: - case 4: - case 5: - /* Internal PHY, nothing to do */ - return; - case 6: /* 2nd CPU port / external PHY */ - if (state->interface != PHY_INTERFACE_MODE_RGMII && - state->interface != PHY_INTERFACE_MODE_RGMII_ID && - state->interface != PHY_INTERFACE_MODE_RGMII_TXID && - state->interface != PHY_INTERFACE_MODE_RGMII_RXID && - state->interface != PHY_INTERFACE_MODE_SGMII && - state->interface != PHY_INTERFACE_MODE_1000BASEX) - return; - - reg = QCA8K_REG_PORT6_PAD_CTRL; - cpu_port_index = QCA8K_CPU_PORT6; - break; - default: - dev_err(ds->dev, "%s: unsupported port: %i\n", __func__, port); - return; - } - - if (port != 6 && phylink_autoneg_inband(mode)) { - dev_err(ds->dev, "%s: in-band negotiation unsupported\n", - __func__); - return; - } - - switch (state->interface) { - case PHY_INTERFACE_MODE_RGMII: - case PHY_INTERFACE_MODE_RGMII_ID: - case PHY_INTERFACE_MODE_RGMII_TXID: - case PHY_INTERFACE_MODE_RGMII_RXID: - qca8k_write(priv, reg, QCA8K_PORT_PAD_RGMII_EN); - - /* Configure rgmii delay */ - qca8k_mac_config_setup_internal_delay(priv, cpu_port_index, reg); - - /* QCA8337 requires to set rgmii rx delay for all ports. - * This is enabled through PORT5_PAD_CTRL for all ports, - * rather than individual port registers. - */ - if (priv->switch_id == QCA8K_ID_QCA8337) - qca8k_write(priv, QCA8K_REG_PORT5_PAD_CTRL, - QCA8K_PORT_PAD_RGMII_RX_DELAY_EN); - break; - case PHY_INTERFACE_MODE_SGMII: - case PHY_INTERFACE_MODE_1000BASEX: - /* Enable SGMII on the port */ - qca8k_write(priv, reg, QCA8K_PORT_PAD_SGMII_EN); - break; - default: - dev_err(ds->dev, "xMII mode %s not supported for port %d\n", - phy_modes(state->interface), port); - return; - } -} - -static void qca8k_phylink_get_caps(struct dsa_switch *ds, int port, - struct phylink_config *config) -{ - switch (port) { - case 0: /* 1st CPU port */ - phy_interface_set_rgmii(config->supported_interfaces); - __set_bit(PHY_INTERFACE_MODE_SGMII, - config->supported_interfaces); - break; - - case 1: - case 2: - case 3: - case 4: - case 5: - /* Internal PHY */ - __set_bit(PHY_INTERFACE_MODE_GMII, - config->supported_interfaces); - __set_bit(PHY_INTERFACE_MODE_INTERNAL, - config->supported_interfaces); - break; - - case 6: /* 2nd CPU port / external PHY */ - phy_interface_set_rgmii(config->supported_interfaces); - __set_bit(PHY_INTERFACE_MODE_SGMII, - config->supported_interfaces); - __set_bit(PHY_INTERFACE_MODE_1000BASEX, - config->supported_interfaces); - break; - } - - config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | - MAC_10 | MAC_100 | MAC_1000FD; - - config->legacy_pre_march2020 = false; -} - -static void -qca8k_phylink_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode, - phy_interface_t interface) -{ - struct qca8k_priv *priv = ds->priv; - - qca8k_port_set_status(priv, port, 0); -} - -static void -qca8k_phylink_mac_link_up(struct dsa_switch *ds, int port, unsigned int mode, - phy_interface_t interface, struct phy_device *phydev, - int speed, int duplex, bool tx_pause, bool rx_pause) -{ - struct qca8k_priv *priv = ds->priv; - u32 reg; - - if (phylink_autoneg_inband(mode)) { - reg = QCA8K_PORT_STATUS_LINK_AUTO; - } else { - switch (speed) { - case SPEED_10: - reg = QCA8K_PORT_STATUS_SPEED_10; - break; - case SPEED_100: - reg = QCA8K_PORT_STATUS_SPEED_100; - break; - case SPEED_1000: - reg = QCA8K_PORT_STATUS_SPEED_1000; - break; - default: - reg = QCA8K_PORT_STATUS_LINK_AUTO; - break; - } - - if (duplex == DUPLEX_FULL) - reg |= QCA8K_PORT_STATUS_DUPLEX; - - if (rx_pause || dsa_is_cpu_port(ds, port)) - reg |= QCA8K_PORT_STATUS_RXFLOW; - - if (tx_pause || dsa_is_cpu_port(ds, port)) - reg |= QCA8K_PORT_STATUS_TXFLOW; - } - - reg |= QCA8K_PORT_STATUS_TXMAC | QCA8K_PORT_STATUS_RXMAC; - - qca8k_write(priv, QCA8K_REG_PORT_STATUS(port), reg); -} - -static struct qca8k_pcs *pcs_to_qca8k_pcs(struct phylink_pcs *pcs) -{ - return container_of(pcs, struct qca8k_pcs, pcs); -} - -static void qca8k_pcs_get_state(struct phylink_pcs *pcs, - struct phylink_link_state *state) -{ - struct qca8k_priv *priv = pcs_to_qca8k_pcs(pcs)->priv; - int port = pcs_to_qca8k_pcs(pcs)->port; - u32 reg; - int ret; - - ret = qca8k_read(priv, QCA8K_REG_PORT_STATUS(port), ®); - if (ret < 0) { - state->link = false; - return; - } - - state->link = !!(reg & QCA8K_PORT_STATUS_LINK_UP); - state->an_complete = state->link; - state->an_enabled = !!(reg & QCA8K_PORT_STATUS_LINK_AUTO); - state->duplex = (reg & QCA8K_PORT_STATUS_DUPLEX) ? DUPLEX_FULL : - DUPLEX_HALF; - - switch (reg & QCA8K_PORT_STATUS_SPEED) { - case QCA8K_PORT_STATUS_SPEED_10: - state->speed = SPEED_10; - break; - case QCA8K_PORT_STATUS_SPEED_100: - state->speed = SPEED_100; - break; - case QCA8K_PORT_STATUS_SPEED_1000: - state->speed = SPEED_1000; - break; - default: - state->speed = SPEED_UNKNOWN; - break; - } - - if (reg & QCA8K_PORT_STATUS_RXFLOW) - state->pause |= MLO_PAUSE_RX; - if (reg & QCA8K_PORT_STATUS_TXFLOW) - state->pause |= MLO_PAUSE_TX; -} - -static int qca8k_pcs_config(struct phylink_pcs *pcs, unsigned int mode, - phy_interface_t interface, - const unsigned long *advertising, - bool permit_pause_to_mac) -{ - struct qca8k_priv *priv = pcs_to_qca8k_pcs(pcs)->priv; - int cpu_port_index, ret, port; - u32 reg, val; - - port = pcs_to_qca8k_pcs(pcs)->port; - switch (port) { - case 0: - reg = QCA8K_REG_PORT0_PAD_CTRL; - cpu_port_index = QCA8K_CPU_PORT0; - break; - - case 6: - reg = QCA8K_REG_PORT6_PAD_CTRL; - cpu_port_index = QCA8K_CPU_PORT6; - break; - - default: - WARN_ON(1); - return -EINVAL; - } - - /* Enable/disable SerDes auto-negotiation as necessary */ - ret = qca8k_read(priv, QCA8K_REG_PWS, &val); - if (ret) - return ret; - if (phylink_autoneg_inband(mode)) - val &= ~QCA8K_PWS_SERDES_AEN_DIS; - else - val |= QCA8K_PWS_SERDES_AEN_DIS; - qca8k_write(priv, QCA8K_REG_PWS, val); - - /* Configure the SGMII parameters */ - ret = qca8k_read(priv, QCA8K_REG_SGMII_CTRL, &val); - if (ret) - return ret; - - val |= QCA8K_SGMII_EN_SD; - - if (priv->ports_config.sgmii_enable_pll) - val |= QCA8K_SGMII_EN_PLL | QCA8K_SGMII_EN_RX | - QCA8K_SGMII_EN_TX; - - if (dsa_is_cpu_port(priv->ds, port)) { - /* CPU port, we're talking to the CPU MAC, be a PHY */ - val &= ~QCA8K_SGMII_MODE_CTRL_MASK; - val |= QCA8K_SGMII_MODE_CTRL_PHY; - } else if (interface == PHY_INTERFACE_MODE_SGMII) { - val &= ~QCA8K_SGMII_MODE_CTRL_MASK; - val |= QCA8K_SGMII_MODE_CTRL_MAC; - } else if (interface == PHY_INTERFACE_MODE_1000BASEX) { - val &= ~QCA8K_SGMII_MODE_CTRL_MASK; - val |= QCA8K_SGMII_MODE_CTRL_BASEX; - } - - qca8k_write(priv, QCA8K_REG_SGMII_CTRL, val); - - /* From original code is reported port instability as SGMII also - * require delay set. Apply advised values here or take them from DT. - */ - if (interface == PHY_INTERFACE_MODE_SGMII) - qca8k_mac_config_setup_internal_delay(priv, cpu_port_index, reg); - /* For qca8327/qca8328/qca8334/qca8338 sgmii is unique and - * falling edge is set writing in the PORT0 PAD reg - */ - if (priv->switch_id == QCA8K_ID_QCA8327 || - priv->switch_id == QCA8K_ID_QCA8337) - reg = QCA8K_REG_PORT0_PAD_CTRL; - - val = 0; - - /* SGMII Clock phase configuration */ - if (priv->ports_config.sgmii_rx_clk_falling_edge) - val |= QCA8K_PORT0_PAD_SGMII_RXCLK_FALLING_EDGE; - - if (priv->ports_config.sgmii_tx_clk_falling_edge) - val |= QCA8K_PORT0_PAD_SGMII_TXCLK_FALLING_EDGE; - - if (val) - ret = qca8k_rmw(priv, reg, - QCA8K_PORT0_PAD_SGMII_RXCLK_FALLING_EDGE | - QCA8K_PORT0_PAD_SGMII_TXCLK_FALLING_EDGE, - val); - - return 0; -} - -static void qca8k_pcs_an_restart(struct phylink_pcs *pcs) -{ -} - -static const struct phylink_pcs_ops qca8k_pcs_ops = { - .pcs_get_state = qca8k_pcs_get_state, - .pcs_config = qca8k_pcs_config, - .pcs_an_restart = qca8k_pcs_an_restart, -}; - -static void qca8k_setup_pcs(struct qca8k_priv *priv, struct qca8k_pcs *qpcs, - int port) -{ - qpcs->pcs.ops = &qca8k_pcs_ops; - - /* We don't have interrupts for link changes, so we need to poll */ - qpcs->pcs.poll = true; - qpcs->priv = priv; - qpcs->port = port; -} - -static void -qca8k_get_strings(struct dsa_switch *ds, int port, u32 stringset, uint8_t *data) -{ - const struct qca8k_match_data *match_data; - struct qca8k_priv *priv = ds->priv; - int i; - - if (stringset != ETH_SS_STATS) - return; - - match_data = of_device_get_match_data(priv->dev); - - for (i = 0; i < match_data->mib_count; i++) - strncpy(data + i * ETH_GSTRING_LEN, ar8327_mib[i].name, - ETH_GSTRING_LEN); -} - -static void qca8k_mib_autocast_handler(struct dsa_switch *ds, struct sk_buff *skb) -{ - const struct qca8k_match_data *match_data; - struct qca8k_mib_eth_data *mib_eth_data; - struct qca8k_priv *priv = ds->priv; - const struct qca8k_mib_desc *mib; - struct mib_ethhdr *mib_ethhdr; - int i, mib_len, offset = 0; - u64 *data; - u8 port; - - mib_ethhdr = (struct mib_ethhdr *)skb_mac_header(skb); - mib_eth_data = &priv->mib_eth_data; - - /* The switch autocast every port. Ignore other packet and - * parse only the requested one. - */ - port = FIELD_GET(QCA_HDR_RECV_SOURCE_PORT, ntohs(mib_ethhdr->hdr)); - if (port != mib_eth_data->req_port) - goto exit; - - match_data = device_get_match_data(priv->dev); - data = mib_eth_data->data; - - for (i = 0; i < match_data->mib_count; i++) { - mib = &ar8327_mib[i]; - - /* First 3 mib are present in the skb head */ - if (i < 3) { - data[i] = mib_ethhdr->data[i]; - continue; - } - - mib_len = sizeof(uint32_t); - - /* Some mib are 64 bit wide */ - if (mib->size == 2) - mib_len = sizeof(uint64_t); - - /* Copy the mib value from packet to the */ - memcpy(data + i, skb->data + offset, mib_len); - - /* Set the offset for the next mib */ - offset += mib_len; - } - -exit: - /* Complete on receiving all the mib packet */ - if (refcount_dec_and_test(&mib_eth_data->port_parsed)) - complete(&mib_eth_data->rw_done); -} - -static int -qca8k_get_ethtool_stats_eth(struct dsa_switch *ds, int port, u64 *data) -{ - struct dsa_port *dp = dsa_to_port(ds, port); - struct qca8k_mib_eth_data *mib_eth_data; - struct qca8k_priv *priv = ds->priv; - int ret; - - mib_eth_data = &priv->mib_eth_data; - - mutex_lock(&mib_eth_data->mutex); - - reinit_completion(&mib_eth_data->rw_done); - - mib_eth_data->req_port = dp->index; - mib_eth_data->data = data; - refcount_set(&mib_eth_data->port_parsed, QCA8K_NUM_PORTS); - - mutex_lock(&priv->reg_mutex); - - /* Send mib autocast request */ - ret = regmap_update_bits(priv->regmap, QCA8K_REG_MIB, - QCA8K_MIB_FUNC | QCA8K_MIB_BUSY, - FIELD_PREP(QCA8K_MIB_FUNC, QCA8K_MIB_CAST) | - QCA8K_MIB_BUSY); - - mutex_unlock(&priv->reg_mutex); - - if (ret) - goto exit; - - ret = wait_for_completion_timeout(&mib_eth_data->rw_done, QCA8K_ETHERNET_TIMEOUT); - -exit: - mutex_unlock(&mib_eth_data->mutex); - - return ret; -} - -static void -qca8k_get_ethtool_stats(struct dsa_switch *ds, int port, - uint64_t *data) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - const struct qca8k_match_data *match_data; - const struct qca8k_mib_desc *mib; - u32 reg, i, val; - u32 hi = 0; - int ret; - - if (priv->mgmt_master && - qca8k_get_ethtool_stats_eth(ds, port, data) > 0) - return; - - match_data = of_device_get_match_data(priv->dev); - - for (i = 0; i < match_data->mib_count; i++) { - mib = &ar8327_mib[i]; - reg = QCA8K_PORT_MIB_COUNTER(port) + mib->offset; - - ret = qca8k_read(priv, reg, &val); - if (ret < 0) - continue; - - if (mib->size == 2) { - ret = qca8k_read(priv, reg + 4, &hi); - if (ret < 0) - continue; - } - - data[i] = val; - if (mib->size == 2) - data[i] |= (u64)hi << 32; - } -} - -static int -qca8k_get_sset_count(struct dsa_switch *ds, int port, int sset) -{ - const struct qca8k_match_data *match_data; - struct qca8k_priv *priv = ds->priv; - - if (sset != ETH_SS_STATS) - return 0; - - match_data = of_device_get_match_data(priv->dev); - - return match_data->mib_count; -} - -static int -qca8k_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *eee) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - u32 lpi_en = QCA8K_REG_EEE_CTRL_LPI_EN(port); - u32 reg; - int ret; - - mutex_lock(&priv->reg_mutex); - ret = qca8k_read(priv, QCA8K_REG_EEE_CTRL, ®); - if (ret < 0) - goto exit; - - if (eee->eee_enabled) - reg |= lpi_en; - else - reg &= ~lpi_en; - ret = qca8k_write(priv, QCA8K_REG_EEE_CTRL, reg); - -exit: - mutex_unlock(&priv->reg_mutex); - return ret; -} - -static int -qca8k_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e) -{ - /* Nothing to do on the port's MAC */ - return 0; -} - -static void -qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - u32 stp_state; - - switch (state) { - case BR_STATE_DISABLED: - stp_state = QCA8K_PORT_LOOKUP_STATE_DISABLED; - break; - case BR_STATE_BLOCKING: - stp_state = QCA8K_PORT_LOOKUP_STATE_BLOCKING; - break; - case BR_STATE_LISTENING: - stp_state = QCA8K_PORT_LOOKUP_STATE_LISTENING; - break; - case BR_STATE_LEARNING: - stp_state = QCA8K_PORT_LOOKUP_STATE_LEARNING; - break; - case BR_STATE_FORWARDING: - default: - stp_state = QCA8K_PORT_LOOKUP_STATE_FORWARD; - break; - } - - qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), - QCA8K_PORT_LOOKUP_STATE_MASK, stp_state); -} - -static int qca8k_port_bridge_join(struct dsa_switch *ds, int port, - struct dsa_bridge bridge, - bool *tx_fwd_offload, - struct netlink_ext_ack *extack) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - int port_mask, cpu_port; - int i, ret; - - cpu_port = dsa_to_port(ds, port)->cpu_dp->index; - port_mask = BIT(cpu_port); - - for (i = 0; i < QCA8K_NUM_PORTS; i++) { - if (dsa_is_cpu_port(ds, i)) - continue; - if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge)) - continue; - /* Add this port to the portvlan mask of the other ports - * in the bridge - */ - ret = regmap_set_bits(priv->regmap, - QCA8K_PORT_LOOKUP_CTRL(i), - BIT(port)); - if (ret) - return ret; - if (i != port) - port_mask |= BIT(i); - } - - /* Add all other ports to this ports portvlan mask */ - ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), - QCA8K_PORT_LOOKUP_MEMBER, port_mask); - - return ret; -} - -static void qca8k_port_bridge_leave(struct dsa_switch *ds, int port, - struct dsa_bridge bridge) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - int cpu_port, i; - - cpu_port = dsa_to_port(ds, port)->cpu_dp->index; - - for (i = 0; i < QCA8K_NUM_PORTS; i++) { - if (dsa_is_cpu_port(ds, i)) - continue; - if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge)) - continue; - /* Remove this port to the portvlan mask of the other ports - * in the bridge - */ - regmap_clear_bits(priv->regmap, - QCA8K_PORT_LOOKUP_CTRL(i), - BIT(port)); - } - - /* Set the cpu port to be the only one in the portvlan mask of - * this port - */ - qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), - QCA8K_PORT_LOOKUP_MEMBER, BIT(cpu_port)); -} - -static void -qca8k_port_fast_age(struct dsa_switch *ds, int port) -{ - struct qca8k_priv *priv = ds->priv; - - mutex_lock(&priv->reg_mutex); - qca8k_fdb_access(priv, QCA8K_FDB_FLUSH_PORT, port); - mutex_unlock(&priv->reg_mutex); -} - -static int -qca8k_set_ageing_time(struct dsa_switch *ds, unsigned int msecs) -{ - struct qca8k_priv *priv = ds->priv; - unsigned int secs = msecs / 1000; - u32 val; - - /* AGE_TIME reg is set in 7s step */ - val = secs / 7; - - /* Handle case with 0 as val to NOT disable - * learning - */ - if (!val) - val = 1; - - return regmap_update_bits(priv->regmap, QCA8K_REG_ATU_CTRL, QCA8K_ATU_AGE_TIME_MASK, - QCA8K_ATU_AGE_TIME(val)); -} - -static int -qca8k_port_enable(struct dsa_switch *ds, int port, - struct phy_device *phy) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - - qca8k_port_set_status(priv, port, 1); - priv->port_enabled_map |= BIT(port); - - if (dsa_is_user_port(ds, port)) - phy_support_asym_pause(phy); - - return 0; -} - -static void -qca8k_port_disable(struct dsa_switch *ds, int port) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - - qca8k_port_set_status(priv, port, 0); - priv->port_enabled_map &= ~BIT(port); -} - -static int -qca8k_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu) -{ - struct qca8k_priv *priv = ds->priv; - int ret; - - /* We have only have a general MTU setting. - * DSA always set the CPU port's MTU to the largest MTU of the slave - * ports. - * Setting MTU just for the CPU port is sufficient to correctly set a - * value for every port. - */ - if (!dsa_is_cpu_port(ds, port)) - return 0; - - /* To change the MAX_FRAME_SIZE the cpu ports must be off or - * the switch panics. - * Turn off both cpu ports before applying the new value to prevent - * this. - */ - if (priv->port_enabled_map & BIT(0)) - qca8k_port_set_status(priv, 0, 0); - - if (priv->port_enabled_map & BIT(6)) - qca8k_port_set_status(priv, 6, 0); - - /* Include L2 header / FCS length */ - ret = qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, new_mtu + ETH_HLEN + ETH_FCS_LEN); - - if (priv->port_enabled_map & BIT(0)) - qca8k_port_set_status(priv, 0, 1); - - if (priv->port_enabled_map & BIT(6)) - qca8k_port_set_status(priv, 6, 1); - - return ret; -} - -static int -qca8k_port_max_mtu(struct dsa_switch *ds, int port) -{ - return QCA8K_MAX_MTU; -} - -static int -qca8k_port_fdb_insert(struct qca8k_priv *priv, const u8 *addr, - u16 port_mask, u16 vid) -{ - /* Set the vid to the port vlan id if no vid is set */ - if (!vid) - vid = QCA8K_PORT_VID_DEF; - - return qca8k_fdb_add(priv, addr, port_mask, vid, - QCA8K_ATU_STATUS_STATIC); -} - -static int -qca8k_port_fdb_add(struct dsa_switch *ds, int port, - const unsigned char *addr, u16 vid, - struct dsa_db db) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - u16 port_mask = BIT(port); - - return qca8k_port_fdb_insert(priv, addr, port_mask, vid); -} - -static int -qca8k_port_fdb_del(struct dsa_switch *ds, int port, - const unsigned char *addr, u16 vid, - struct dsa_db db) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - u16 port_mask = BIT(port); - - if (!vid) - vid = QCA8K_PORT_VID_DEF; - - return qca8k_fdb_del(priv, addr, port_mask, vid); -} - -static int -qca8k_port_fdb_dump(struct dsa_switch *ds, int port, - dsa_fdb_dump_cb_t *cb, void *data) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - struct qca8k_fdb _fdb = { 0 }; - int cnt = QCA8K_NUM_FDB_RECORDS; - bool is_static; - int ret = 0; - - mutex_lock(&priv->reg_mutex); - while (cnt-- && !qca8k_fdb_next(priv, &_fdb, port)) { - if (!_fdb.aging) - break; - is_static = (_fdb.aging == QCA8K_ATU_STATUS_STATIC); - ret = cb(_fdb.mac, _fdb.vid, is_static, data); - if (ret) - break; - } - mutex_unlock(&priv->reg_mutex); - - return 0; -} - -static int -qca8k_port_mdb_add(struct dsa_switch *ds, int port, - const struct switchdev_obj_port_mdb *mdb, - struct dsa_db db) -{ - struct qca8k_priv *priv = ds->priv; - const u8 *addr = mdb->addr; - u16 vid = mdb->vid; - - return qca8k_fdb_search_and_insert(priv, BIT(port), addr, vid); -} - -static int -qca8k_port_mdb_del(struct dsa_switch *ds, int port, - const struct switchdev_obj_port_mdb *mdb, - struct dsa_db db) -{ - struct qca8k_priv *priv = ds->priv; - const u8 *addr = mdb->addr; - u16 vid = mdb->vid; - - return qca8k_fdb_search_and_del(priv, BIT(port), addr, vid); -} - -static int -qca8k_port_mirror_add(struct dsa_switch *ds, int port, - struct dsa_mall_mirror_tc_entry *mirror, - bool ingress, struct netlink_ext_ack *extack) -{ - struct qca8k_priv *priv = ds->priv; - int monitor_port, ret; - u32 reg, val; - - /* Check for existent entry */ - if ((ingress ? priv->mirror_rx : priv->mirror_tx) & BIT(port)) - return -EEXIST; - - ret = regmap_read(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, &val); - if (ret) - return ret; - - /* QCA83xx can have only one port set to mirror mode. - * Check that the correct port is requested and return error otherwise. - * When no mirror port is set, the values is set to 0xF - */ - monitor_port = FIELD_GET(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); - if (monitor_port != 0xF && monitor_port != mirror->to_local_port) - return -EEXIST; - - /* Set the monitor port */ - val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, - mirror->to_local_port); - ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, - QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); - if (ret) - return ret; - - if (ingress) { - reg = QCA8K_PORT_LOOKUP_CTRL(port); - val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN; - } else { - reg = QCA8K_REG_PORT_HOL_CTRL1(port); - val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN; - } - - ret = regmap_update_bits(priv->regmap, reg, val, val); - if (ret) - return ret; - - /* Track mirror port for tx and rx to decide when the - * mirror port has to be disabled. - */ - if (ingress) - priv->mirror_rx |= BIT(port); - else - priv->mirror_tx |= BIT(port); - - return 0; -} - -static void -qca8k_port_mirror_del(struct dsa_switch *ds, int port, - struct dsa_mall_mirror_tc_entry *mirror) -{ - struct qca8k_priv *priv = ds->priv; - u32 reg, val; - int ret; - - if (mirror->ingress) { - reg = QCA8K_PORT_LOOKUP_CTRL(port); - val = QCA8K_PORT_LOOKUP_ING_MIRROR_EN; - } else { - reg = QCA8K_REG_PORT_HOL_CTRL1(port); - val = QCA8K_PORT_HOL_CTRL1_EG_MIRROR_EN; - } - - ret = regmap_clear_bits(priv->regmap, reg, val); - if (ret) - goto err; - - if (mirror->ingress) - priv->mirror_rx &= ~BIT(port); - else - priv->mirror_tx &= ~BIT(port); - - /* No port set to send packet to mirror port. Disable mirror port */ - if (!priv->mirror_rx && !priv->mirror_tx) { - val = FIELD_PREP(QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, 0xF); - ret = regmap_update_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, - QCA8K_GLOBAL_FW_CTRL0_MIRROR_PORT_NUM, val); - if (ret) - goto err; - } -err: - dev_err(priv->dev, "Failed to del mirror port from %d", port); -} - -static int -qca8k_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering, - struct netlink_ext_ack *extack) -{ - struct qca8k_priv *priv = ds->priv; - int ret; - - if (vlan_filtering) { - ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), - QCA8K_PORT_LOOKUP_VLAN_MODE_MASK, - QCA8K_PORT_LOOKUP_VLAN_MODE_SECURE); - } else { - ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port), - QCA8K_PORT_LOOKUP_VLAN_MODE_MASK, - QCA8K_PORT_LOOKUP_VLAN_MODE_NONE); - } - - return ret; -} - -static int -qca8k_port_vlan_add(struct dsa_switch *ds, int port, - const struct switchdev_obj_port_vlan *vlan, - struct netlink_ext_ack *extack) -{ - bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; - bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; - struct qca8k_priv *priv = ds->priv; - int ret; - - ret = qca8k_vlan_add(priv, port, vlan->vid, untagged); - if (ret) { - dev_err(priv->dev, "Failed to add VLAN to port %d (%d)", port, ret); - return ret; - } - - if (pvid) { - ret = qca8k_rmw(priv, QCA8K_EGRESS_VLAN(port), - QCA8K_EGREES_VLAN_PORT_MASK(port), - QCA8K_EGREES_VLAN_PORT(port, vlan->vid)); - if (ret) - return ret; - - ret = qca8k_write(priv, QCA8K_REG_PORT_VLAN_CTRL0(port), - QCA8K_PORT_VLAN_CVID(vlan->vid) | - QCA8K_PORT_VLAN_SVID(vlan->vid)); - } - - return ret; -} - -static int -qca8k_port_vlan_del(struct dsa_switch *ds, int port, - const struct switchdev_obj_port_vlan *vlan) -{ - struct qca8k_priv *priv = ds->priv; - int ret; - - ret = qca8k_vlan_del(priv, port, vlan->vid); - if (ret) - dev_err(priv->dev, "Failed to delete VLAN from port %d (%d)", port, ret); - - return ret; -} - -static u32 qca8k_get_phy_flags(struct dsa_switch *ds, int port) -{ - struct qca8k_priv *priv = ds->priv; - - /* Communicate to the phy internal driver the switch revision. - * Based on the switch revision different values needs to be - * set to the dbg and mmd reg on the phy. - * The first 2 bit are used to communicate the switch revision - * to the phy driver. - */ - if (port > 0 && port < 6) - return priv->switch_revision; - - return 0; -} - -static enum dsa_tag_protocol -qca8k_get_tag_protocol(struct dsa_switch *ds, int port, - enum dsa_tag_protocol mp) -{ - return DSA_TAG_PROTO_QCA; -} - -static bool -qca8k_lag_can_offload(struct dsa_switch *ds, struct dsa_lag lag, - struct netdev_lag_upper_info *info) -{ - struct dsa_port *dp; - int members = 0; - - if (!lag.id) - return false; - - dsa_lag_foreach_port(dp, ds->dst, &lag) - /* Includes the port joining the LAG */ - members++; - - if (members > QCA8K_NUM_PORTS_FOR_LAG) - return false; - - if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) - return false; - - if (info->hash_type != NETDEV_LAG_HASH_L2 && - info->hash_type != NETDEV_LAG_HASH_L23) - return false; - - return true; -} - -static int -qca8k_lag_setup_hash(struct dsa_switch *ds, struct dsa_lag lag, - struct netdev_lag_upper_info *info) -{ - struct net_device *lag_dev = lag.dev; - struct qca8k_priv *priv = ds->priv; - bool unique_lag = true; - unsigned int i; - u32 hash = 0; - - switch (info->hash_type) { - case NETDEV_LAG_HASH_L23: - hash |= QCA8K_TRUNK_HASH_SIP_EN; - hash |= QCA8K_TRUNK_HASH_DIP_EN; - fallthrough; - case NETDEV_LAG_HASH_L2: - hash |= QCA8K_TRUNK_HASH_SA_EN; - hash |= QCA8K_TRUNK_HASH_DA_EN; - break; - default: /* We should NEVER reach this */ - return -EOPNOTSUPP; - } - - /* Check if we are the unique configured LAG */ - dsa_lags_foreach_id(i, ds->dst) - if (i != lag.id && dsa_lag_by_id(ds->dst, i)) { - unique_lag = false; - break; - } - - /* Hash Mode is global. Make sure the same Hash Mode - * is set to all the 4 possible lag. - * If we are the unique LAG we can set whatever hash - * mode we want. - * To change hash mode it's needed to remove all LAG - * and change the mode with the latest. - */ - if (unique_lag) { - priv->lag_hash_mode = hash; - } else if (priv->lag_hash_mode != hash) { - netdev_err(lag_dev, "Error: Mismatched Hash Mode across different lag is not supported\n"); - return -EOPNOTSUPP; - } - - return regmap_update_bits(priv->regmap, QCA8K_TRUNK_HASH_EN_CTRL, - QCA8K_TRUNK_HASH_MASK, hash); -} - -static int -qca8k_lag_refresh_portmap(struct dsa_switch *ds, int port, - struct dsa_lag lag, bool delete) -{ - struct qca8k_priv *priv = ds->priv; - int ret, id, i; - u32 val; - - /* DSA LAG IDs are one-based, hardware is zero-based */ - id = lag.id - 1; - - /* Read current port member */ - ret = regmap_read(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL0, &val); - if (ret) - return ret; - - /* Shift val to the correct trunk */ - val >>= QCA8K_REG_GOL_TRUNK_SHIFT(id); - val &= QCA8K_REG_GOL_TRUNK_MEMBER_MASK; - if (delete) - val &= ~BIT(port); - else - val |= BIT(port); - - /* Update port member. With empty portmap disable trunk */ - ret = regmap_update_bits(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL0, - QCA8K_REG_GOL_TRUNK_MEMBER(id) | - QCA8K_REG_GOL_TRUNK_EN(id), - !val << QCA8K_REG_GOL_TRUNK_SHIFT(id) | - val << QCA8K_REG_GOL_TRUNK_SHIFT(id)); - - /* Search empty member if adding or port on deleting */ - for (i = 0; i < QCA8K_NUM_PORTS_FOR_LAG; i++) { - ret = regmap_read(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL(id), &val); - if (ret) - return ret; - - val >>= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i); - val &= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_MASK; - - if (delete) { - /* If port flagged to be disabled assume this member is - * empty - */ - if (val != QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN_MASK) - continue; - - val &= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_PORT_MASK; - if (val != port) - continue; - } else { - /* If port flagged to be enabled assume this member is - * already set - */ - if (val == QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN_MASK) - continue; - } - - /* We have found the member to add/remove */ - break; - } - - /* Set port in the correct port mask or disable port if in delete mode */ - return regmap_update_bits(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL(id), - QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN(id, i) | - QCA8K_REG_GOL_TRUNK_ID_MEM_ID_PORT(id, i), - !delete << QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i) | - port << QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i)); -} - -static int -qca8k_port_lag_join(struct dsa_switch *ds, int port, struct dsa_lag lag, - struct netdev_lag_upper_info *info) -{ - int ret; - - if (!qca8k_lag_can_offload(ds, lag, info)) - return -EOPNOTSUPP; - - ret = qca8k_lag_setup_hash(ds, lag, info); - if (ret) - return ret; - - return qca8k_lag_refresh_portmap(ds, port, lag, false); -} - -static int -qca8k_port_lag_leave(struct dsa_switch *ds, int port, - struct dsa_lag lag) -{ - return qca8k_lag_refresh_portmap(ds, port, lag, true); -} - -static void -qca8k_master_change(struct dsa_switch *ds, const struct net_device *master, - bool operational) -{ - struct dsa_port *dp = master->dsa_ptr; - struct qca8k_priv *priv = ds->priv; - - /* Ethernet MIB/MDIO is only supported for CPU port 0 */ - if (dp->index != 0) - return; - - mutex_lock(&priv->mgmt_eth_data.mutex); - mutex_lock(&priv->mib_eth_data.mutex); - - priv->mgmt_master = operational ? (struct net_device *)master : NULL; - - mutex_unlock(&priv->mib_eth_data.mutex); - mutex_unlock(&priv->mgmt_eth_data.mutex); -} - -static int qca8k_connect_tag_protocol(struct dsa_switch *ds, - enum dsa_tag_protocol proto) -{ - struct qca_tagger_data *tagger_data; - - switch (proto) { - case DSA_TAG_PROTO_QCA: - tagger_data = ds->tagger_data; - - tagger_data->rw_reg_ack_handler = qca8k_rw_reg_ack_handler; - tagger_data->mib_autocast_handler = qca8k_mib_autocast_handler; - - break; - default: - return -EOPNOTSUPP; - } - - return 0; -} - -static int -qca8k_setup(struct dsa_switch *ds) -{ - struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv; - int cpu_port, ret, i; - u32 mask; - - cpu_port = qca8k_find_cpu_port(ds); - if (cpu_port < 0) { - dev_err(priv->dev, "No cpu port configured in both cpu port0 and port6"); - return cpu_port; - } - - /* Parse CPU port config to be later used in phy_link mac_config */ - ret = qca8k_parse_port_config(priv); - if (ret) - return ret; - - ret = qca8k_setup_mdio_bus(priv); - if (ret) - return ret; - - ret = qca8k_setup_of_pws_reg(priv); - if (ret) - return ret; - - ret = qca8k_setup_mac_pwr_sel(priv); - if (ret) - return ret; - - qca8k_setup_pcs(priv, &priv->pcs_port_0, 0); - qca8k_setup_pcs(priv, &priv->pcs_port_6, 6); - - /* Make sure MAC06 is disabled */ - ret = regmap_clear_bits(priv->regmap, QCA8K_REG_PORT0_PAD_CTRL, - QCA8K_PORT0_PAD_MAC06_EXCHANGE_EN); - if (ret) { - dev_err(priv->dev, "failed disabling MAC06 exchange"); - return ret; - } - - /* Enable CPU Port */ - ret = regmap_set_bits(priv->regmap, QCA8K_REG_GLOBAL_FW_CTRL0, - QCA8K_GLOBAL_FW_CTRL0_CPU_PORT_EN); - if (ret) { - dev_err(priv->dev, "failed enabling CPU port"); - return ret; - } - - /* Enable MIB counters */ - ret = qca8k_mib_init(priv); - if (ret) - dev_warn(priv->dev, "mib init failed"); - - /* Initial setup of all ports */ - for (i = 0; i < QCA8K_NUM_PORTS; i++) { - /* Disable forwarding by default on all ports */ - ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(i), - QCA8K_PORT_LOOKUP_MEMBER, 0); - if (ret) - return ret; - - /* Enable QCA header mode on all cpu ports */ - if (dsa_is_cpu_port(ds, i)) { - ret = qca8k_write(priv, QCA8K_REG_PORT_HDR_CTRL(i), - FIELD_PREP(QCA8K_PORT_HDR_CTRL_TX_MASK, QCA8K_PORT_HDR_CTRL_ALL) | - FIELD_PREP(QCA8K_PORT_HDR_CTRL_RX_MASK, QCA8K_PORT_HDR_CTRL_ALL)); - if (ret) { - dev_err(priv->dev, "failed enabling QCA header mode"); - return ret; - } - } - - /* Disable MAC by default on all user ports */ - if (dsa_is_user_port(ds, i)) - qca8k_port_set_status(priv, i, 0); - } - - /* Forward all unknown frames to CPU port for Linux processing - * Notice that in multi-cpu config only one port should be set - * for igmp, unknown, multicast and broadcast packet - */ - ret = qca8k_write(priv, QCA8K_REG_GLOBAL_FW_CTRL1, - FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_IGMP_DP_MASK, BIT(cpu_port)) | - FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_BC_DP_MASK, BIT(cpu_port)) | - FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_MC_DP_MASK, BIT(cpu_port)) | - FIELD_PREP(QCA8K_GLOBAL_FW_CTRL1_UC_DP_MASK, BIT(cpu_port))); - if (ret) - return ret; - - /* Setup connection between CPU port & user ports - * Configure specific switch configuration for ports - */ - for (i = 0; i < QCA8K_NUM_PORTS; i++) { - /* CPU port gets connected to all user ports of the switch */ - if (dsa_is_cpu_port(ds, i)) { - ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(i), - QCA8K_PORT_LOOKUP_MEMBER, dsa_user_ports(ds)); - if (ret) - return ret; - } - - /* Individual user ports get connected to CPU port only */ - if (dsa_is_user_port(ds, i)) { - ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(i), - QCA8K_PORT_LOOKUP_MEMBER, - BIT(cpu_port)); - if (ret) - return ret; - - /* Enable ARP Auto-learning by default */ - ret = regmap_set_bits(priv->regmap, QCA8K_PORT_LOOKUP_CTRL(i), - QCA8K_PORT_LOOKUP_LEARN); - if (ret) - return ret; - - /* For port based vlans to work we need to set the - * default egress vid - */ - ret = qca8k_rmw(priv, QCA8K_EGRESS_VLAN(i), - QCA8K_EGREES_VLAN_PORT_MASK(i), - QCA8K_EGREES_VLAN_PORT(i, QCA8K_PORT_VID_DEF)); - if (ret) - return ret; - - ret = qca8k_write(priv, QCA8K_REG_PORT_VLAN_CTRL0(i), - QCA8K_PORT_VLAN_CVID(QCA8K_PORT_VID_DEF) | - QCA8K_PORT_VLAN_SVID(QCA8K_PORT_VID_DEF)); - if (ret) - return ret; - } - - /* The port 5 of the qca8337 have some problem in flood condition. The - * original legacy driver had some specific buffer and priority settings - * for the different port suggested by the QCA switch team. Add this - * missing settings to improve switch stability under load condition. - * This problem is limited to qca8337 and other qca8k switch are not affected. - */ - if (priv->switch_id == QCA8K_ID_QCA8337) { - switch (i) { - /* The 2 CPU port and port 5 requires some different - * priority than any other ports. - */ - case 0: - case 5: - case 6: - mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) | - QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) | - QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x4) | - QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x4) | - QCA8K_PORT_HOL_CTRL0_EG_PRI4(0x6) | - QCA8K_PORT_HOL_CTRL0_EG_PRI5(0x8) | - QCA8K_PORT_HOL_CTRL0_EG_PORT(0x1e); - break; - default: - mask = QCA8K_PORT_HOL_CTRL0_EG_PRI0(0x3) | - QCA8K_PORT_HOL_CTRL0_EG_PRI1(0x4) | - QCA8K_PORT_HOL_CTRL0_EG_PRI2(0x6) | - QCA8K_PORT_HOL_CTRL0_EG_PRI3(0x8) | - QCA8K_PORT_HOL_CTRL0_EG_PORT(0x19); - } - qca8k_write(priv, QCA8K_REG_PORT_HOL_CTRL0(i), mask); - - mask = QCA8K_PORT_HOL_CTRL1_ING(0x6) | - QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN | - QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN | - QCA8K_PORT_HOL_CTRL1_WRED_EN; - qca8k_rmw(priv, QCA8K_REG_PORT_HOL_CTRL1(i), - QCA8K_PORT_HOL_CTRL1_ING_BUF_MASK | - QCA8K_PORT_HOL_CTRL1_EG_PRI_BUF_EN | - QCA8K_PORT_HOL_CTRL1_EG_PORT_BUF_EN | - QCA8K_PORT_HOL_CTRL1_WRED_EN, - mask); - } - } - - /* Special GLOBAL_FC_THRESH value are needed for ar8327 switch */ - if (priv->switch_id == QCA8K_ID_QCA8327) { - mask = QCA8K_GLOBAL_FC_GOL_XON_THRES(288) | - QCA8K_GLOBAL_FC_GOL_XOFF_THRES(496); - qca8k_rmw(priv, QCA8K_REG_GLOBAL_FC_THRESH, - QCA8K_GLOBAL_FC_GOL_XON_THRES_MASK | - QCA8K_GLOBAL_FC_GOL_XOFF_THRES_MASK, - mask); - } - - /* Setup our port MTUs to match power on defaults */ - ret = qca8k_write(priv, QCA8K_MAX_FRAME_SIZE, ETH_FRAME_LEN + ETH_FCS_LEN); - if (ret) - dev_warn(priv->dev, "failed setting MTU settings"); - - /* Flush the FDB table */ - qca8k_fdb_flush(priv); - - /* Set min a max ageing value supported */ - ds->ageing_time_min = 7000; - ds->ageing_time_max = 458745000; - - /* Set max number of LAGs supported */ - ds->num_lag_ids = QCA8K_NUM_LAGS; - - return 0; -} - -static const struct dsa_switch_ops qca8k_switch_ops = { - .get_tag_protocol = qca8k_get_tag_protocol, - .setup = qca8k_setup, - .get_strings = qca8k_get_strings, - .get_ethtool_stats = qca8k_get_ethtool_stats, - .get_sset_count = qca8k_get_sset_count, - .set_ageing_time = qca8k_set_ageing_time, - .get_mac_eee = qca8k_get_mac_eee, - .set_mac_eee = qca8k_set_mac_eee, - .port_enable = qca8k_port_enable, - .port_disable = qca8k_port_disable, - .port_change_mtu = qca8k_port_change_mtu, - .port_max_mtu = qca8k_port_max_mtu, - .port_stp_state_set = qca8k_port_stp_state_set, - .port_bridge_join = qca8k_port_bridge_join, - .port_bridge_leave = qca8k_port_bridge_leave, - .port_fast_age = qca8k_port_fast_age, - .port_fdb_add = qca8k_port_fdb_add, - .port_fdb_del = qca8k_port_fdb_del, - .port_fdb_dump = qca8k_port_fdb_dump, - .port_mdb_add = qca8k_port_mdb_add, - .port_mdb_del = qca8k_port_mdb_del, - .port_mirror_add = qca8k_port_mirror_add, - .port_mirror_del = qca8k_port_mirror_del, - .port_vlan_filtering = qca8k_port_vlan_filtering, - .port_vlan_add = qca8k_port_vlan_add, - .port_vlan_del = qca8k_port_vlan_del, - .phylink_get_caps = qca8k_phylink_get_caps, - .phylink_mac_select_pcs = qca8k_phylink_mac_select_pcs, - .phylink_mac_config = qca8k_phylink_mac_config, - .phylink_mac_link_down = qca8k_phylink_mac_link_down, - .phylink_mac_link_up = qca8k_phylink_mac_link_up, - .get_phy_flags = qca8k_get_phy_flags, - .port_lag_join = qca8k_port_lag_join, - .port_lag_leave = qca8k_port_lag_leave, - .master_state_change = qca8k_master_change, - .connect_tag_protocol = qca8k_connect_tag_protocol, -}; - -static int qca8k_read_switch_id(struct qca8k_priv *priv) -{ - const struct qca8k_match_data *data; - u32 val; - u8 id; - int ret; - - /* get the switches ID from the compatible */ - data = of_device_get_match_data(priv->dev); - if (!data) - return -ENODEV; - - ret = qca8k_read(priv, QCA8K_REG_MASK_CTRL, &val); - if (ret < 0) - return -ENODEV; - - id = QCA8K_MASK_CTRL_DEVICE_ID(val); - if (id != data->id) { - dev_err(priv->dev, "Switch id detected %x but expected %x", id, data->id); - return -ENODEV; - } - - priv->switch_id = id; - - /* Save revision to communicate to the internal PHY driver */ - priv->switch_revision = QCA8K_MASK_CTRL_REV_ID(val); - - return 0; -} - -static int -qca8k_sw_probe(struct mdio_device *mdiodev) -{ - struct qca8k_priv *priv; - int ret; - - /* allocate the private data struct so that we can probe the switches - * ID register - */ - priv = devm_kzalloc(&mdiodev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - priv->bus = mdiodev->bus; - priv->dev = &mdiodev->dev; - - priv->reset_gpio = devm_gpiod_get_optional(priv->dev, "reset", - GPIOD_ASIS); - if (IS_ERR(priv->reset_gpio)) - return PTR_ERR(priv->reset_gpio); - - if (priv->reset_gpio) { - gpiod_set_value_cansleep(priv->reset_gpio, 1); - /* The active low duration must be greater than 10 ms - * and checkpatch.pl wants 20 ms. - */ - msleep(20); - gpiod_set_value_cansleep(priv->reset_gpio, 0); - } - - /* Start by setting up the register mapping */ - priv->regmap = devm_regmap_init(&mdiodev->dev, NULL, priv, - &qca8k_regmap_config); - if (IS_ERR(priv->regmap)) { - dev_err(priv->dev, "regmap initialization failed"); - return PTR_ERR(priv->regmap); - } - - priv->mdio_cache.page = 0xffff; - priv->mdio_cache.lo = 0xffff; - priv->mdio_cache.hi = 0xffff; - - /* Check the detected switch id */ - ret = qca8k_read_switch_id(priv); - if (ret) - return ret; - - priv->ds = devm_kzalloc(&mdiodev->dev, sizeof(*priv->ds), GFP_KERNEL); - if (!priv->ds) - return -ENOMEM; - - mutex_init(&priv->mgmt_eth_data.mutex); - init_completion(&priv->mgmt_eth_data.rw_done); - - mutex_init(&priv->mib_eth_data.mutex); - init_completion(&priv->mib_eth_data.rw_done); - - priv->ds->dev = &mdiodev->dev; - priv->ds->num_ports = QCA8K_NUM_PORTS; - priv->ds->priv = priv; - priv->ds->ops = &qca8k_switch_ops; - mutex_init(&priv->reg_mutex); - dev_set_drvdata(&mdiodev->dev, priv); - - return dsa_register_switch(priv->ds); -} - -static void -qca8k_sw_remove(struct mdio_device *mdiodev) -{ - struct qca8k_priv *priv = dev_get_drvdata(&mdiodev->dev); - int i; - - if (!priv) - return; - - for (i = 0; i < QCA8K_NUM_PORTS; i++) - qca8k_port_set_status(priv, i, 0); - - dsa_unregister_switch(priv->ds); - - dev_set_drvdata(&mdiodev->dev, NULL); -} - -static void qca8k_sw_shutdown(struct mdio_device *mdiodev) -{ - struct qca8k_priv *priv = dev_get_drvdata(&mdiodev->dev); - - if (!priv) - return; - - dsa_switch_shutdown(priv->ds); - - dev_set_drvdata(&mdiodev->dev, NULL); -} - -#ifdef CONFIG_PM_SLEEP -static void -qca8k_set_pm(struct qca8k_priv *priv, int enable) -{ - int port; - - for (port = 0; port < QCA8K_NUM_PORTS; port++) { - /* Do not enable on resume if the port was - * disabled before. - */ - if (!(priv->port_enabled_map & BIT(port))) - continue; - - qca8k_port_set_status(priv, port, enable); - } -} - -static int qca8k_suspend(struct device *dev) -{ - struct qca8k_priv *priv = dev_get_drvdata(dev); - - qca8k_set_pm(priv, 0); - - return dsa_switch_suspend(priv->ds); -} - -static int qca8k_resume(struct device *dev) -{ - struct qca8k_priv *priv = dev_get_drvdata(dev); - - qca8k_set_pm(priv, 1); - - return dsa_switch_resume(priv->ds); -} -#endif /* CONFIG_PM_SLEEP */ - -static SIMPLE_DEV_PM_OPS(qca8k_pm_ops, - qca8k_suspend, qca8k_resume); - -static const struct qca8k_match_data qca8327 = { - .id = QCA8K_ID_QCA8327, - .reduced_package = true, - .mib_count = QCA8K_QCA832X_MIB_COUNT, -}; - -static const struct qca8k_match_data qca8328 = { - .id = QCA8K_ID_QCA8327, - .mib_count = QCA8K_QCA832X_MIB_COUNT, -}; - -static const struct qca8k_match_data qca833x = { - .id = QCA8K_ID_QCA8337, - .mib_count = QCA8K_QCA833X_MIB_COUNT, -}; - -static const struct of_device_id qca8k_of_match[] = { - { .compatible = "qca,qca8327", .data = &qca8327 }, - { .compatible = "qca,qca8328", .data = &qca8328 }, - { .compatible = "qca,qca8334", .data = &qca833x }, - { .compatible = "qca,qca8337", .data = &qca833x }, - { /* sentinel */ }, -}; - -static struct mdio_driver qca8kmdio_driver = { - .probe = qca8k_sw_probe, - .remove = qca8k_sw_remove, - .shutdown = qca8k_sw_shutdown, - .mdiodrv.driver = { - .name = "qca8k", - .of_match_table = qca8k_of_match, - .pm = &qca8k_pm_ops, - }, -}; - -mdio_module_driver(qca8kmdio_driver); - -MODULE_AUTHOR("Mathieu Olivari, John Crispin <john@phrozen.org>"); -MODULE_DESCRIPTION("Driver for QCA8K ethernet switch family"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS("platform:qca8k"); |