# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_NET_DSA_AR9331) += ar9331.o
obj-$(CONFIG_NET_DSA_QCA8K) += qca8k.o
+qca8k-y += qca8k-common.o qca8k-8xxx.o
--- /dev/null
+// 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"
+
+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)
+{
+ const struct qca8k_match_data *data = priv->info;
+ struct device_node *node = priv->dev->of_node;
+ 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) {
+ /* 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)
+{
+ struct qca8k_priv *priv = ds->priv;
+ int i;
+
+ if (stringset != ETH_SS_STATS)
+ return;
+
+ for (i = 0; i < priv->info->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)
+{
+ 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;
+
+ data = mib_eth_data->data;
+
+ for (i = 0; i < priv->info->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_mib_desc *mib;
+ u32 reg, i, val;
+ u32 hi = 0;
+ int ret;
+
+ if (priv->mgmt_master && priv->info->ops->autocast_mib &&
+ priv->info->ops->autocast_mib(ds, port, data) > 0)
+ return;
+
+ for (i = 0; i < priv->info->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)
+{
+ struct qca8k_priv *priv = ds->priv;
+
+ if (sset != ETH_SS_STATS)
+ return 0;
+
+ return priv->info->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)
+{
+ u32 val;
+ u8 id;
+ int ret;
+
+ if (!priv->info)
+ 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 != priv->info->id) {
+ dev_err(priv->dev,
+ "Switch id detected %x but expected %x",
+ id, priv->info->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->info = of_device_get_match_data(priv->dev);
+ 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_info_ops qca8xxx_ops = {
+ .autocast_mib = qca8k_get_ethtool_stats_eth,
+};
+
+static const struct qca8k_match_data qca8327 = {
+ .id = QCA8K_ID_QCA8327,
+ .reduced_package = true,
+ .mib_count = QCA8K_QCA832X_MIB_COUNT,
+ .ops = &qca8xxx_ops,
+};
+
+static const struct qca8k_match_data qca8328 = {
+ .id = QCA8K_ID_QCA8327,
+ .mib_count = QCA8K_QCA832X_MIB_COUNT,
+ .ops = &qca8xxx_ops,
+};
+
+static const struct qca8k_match_data qca833x = {
+ .id = QCA8K_ID_QCA8337,
+ .mib_count = QCA8K_QCA833X_MIB_COUNT,
+ .ops = &qca8xxx_ops,
+};
+
+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");
--- /dev/null
+// 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/netdevice.h>
+#include <net/dsa.h>
+
+#include "qca8k.h"
+
+#define MIB_DESC(_s, _o, _n) \
+ { \
+ .size = (_s), \
+ .offset = (_o), \
+ .name = (_n), \
+ }
+
+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"),
+};
+++ /dev/null
-// 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)
-{
- const struct qca8k_match_data *data = priv->info;
- struct device_node *node = priv->dev->of_node;
- 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) {
- /* 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)
-{
- struct qca8k_priv *priv = ds->priv;
- int i;
-
- if (stringset != ETH_SS_STATS)
- return;
-
- for (i = 0; i < priv->info->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)
-{
- 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;
-
- data = mib_eth_data->data;
-
- for (i = 0; i < priv->info->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_mib_desc *mib;
- u32 reg, i, val;
- u32 hi = 0;
- int ret;
-
- if (priv->mgmt_master && priv->info->ops->autocast_mib &&
- priv->info->ops->autocast_mib(ds, port, data) > 0)
- return;
-
- for (i = 0; i < priv->info->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)
-{
- struct qca8k_priv *priv = ds->priv;
-
- if (sset != ETH_SS_STATS)
- return 0;
-
- return priv->info->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)
-{
- u32 val;
- u8 id;
- int ret;
-
- if (!priv->info)
- 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 != priv->info->id) {
- dev_err(priv->dev,
- "Switch id detected %x but expected %x",
- id, priv->info->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->info = of_device_get_match_data(priv->dev);
- 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_info_ops qca8xxx_ops = {
- .autocast_mib = qca8k_get_ethtool_stats_eth,
-};
-
-static const struct qca8k_match_data qca8327 = {
- .id = QCA8K_ID_QCA8327,
- .reduced_package = true,
- .mib_count = QCA8K_QCA832X_MIB_COUNT,
- .ops = &qca8xxx_ops,
-};
-
-static const struct qca8k_match_data qca8328 = {
- .id = QCA8K_ID_QCA8327,
- .mib_count = QCA8K_QCA832X_MIB_COUNT,
- .ops = &qca8xxx_ops,
-};
-
-static const struct qca8k_match_data qca833x = {
- .id = QCA8K_ID_QCA8337,
- .mib_count = QCA8K_QCA833X_MIB_COUNT,
- .ops = &qca8xxx_ops,
-};
-
-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");
u8 mac[6];
};
+/* Common setup function */
+extern const struct qca8k_mib_desc ar8327_mib[];
+
#endif /* __QCA8K_H */
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