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Subject[PATCH RFC 3/6] The file ksz_common.c contains common code shared by all KSZ switch drivers
Date
From: Tristram Ha <Tristram.Ha@microchip.com>

The file ksz_common.c only holds common code used by all KSZ switch drivers.

Signed-off-by: Tristram Ha <Tristram.Ha@microchip.com>
---
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 56cd6d3..bebcc65 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -25,1114 +25,12 @@
#include <linux/phy.h>
#include <linux/etherdevice.h>
#include <linux/if_bridge.h>
+#include <linux/of_net.h>
#include <net/dsa.h>
#include <net/switchdev.h>

#include "ksz_priv.h"

-static const struct {
- int index;
- char string[ETH_GSTRING_LEN];
-} mib_names[TOTAL_SWITCH_COUNTER_NUM] = {
- { 0x00, "rx_hi" },
- { 0x01, "rx_undersize" },
- { 0x02, "rx_fragments" },
- { 0x03, "rx_oversize" },
- { 0x04, "rx_jabbers" },
- { 0x05, "rx_symbol_err" },
- { 0x06, "rx_crc_err" },
- { 0x07, "rx_align_err" },
- { 0x08, "rx_mac_ctrl" },
- { 0x09, "rx_pause" },
- { 0x0A, "rx_bcast" },
- { 0x0B, "rx_mcast" },
- { 0x0C, "rx_ucast" },
- { 0x0D, "rx_64_or_less" },
- { 0x0E, "rx_65_127" },
- { 0x0F, "rx_128_255" },
- { 0x10, "rx_256_511" },
- { 0x11, "rx_512_1023" },
- { 0x12, "rx_1024_1522" },
- { 0x13, "rx_1523_2000" },
- { 0x14, "rx_2001" },
- { 0x15, "tx_hi" },
- { 0x16, "tx_late_col" },
- { 0x17, "tx_pause" },
- { 0x18, "tx_bcast" },
- { 0x19, "tx_mcast" },
- { 0x1A, "tx_ucast" },
- { 0x1B, "tx_deferred" },
- { 0x1C, "tx_total_col" },
- { 0x1D, "tx_exc_col" },
- { 0x1E, "tx_single_col" },
- { 0x1F, "tx_mult_col" },
- { 0x80, "rx_total" },
- { 0x81, "tx_total" },
- { 0x82, "rx_discards" },
- { 0x83, "tx_discards" },
-};
-
-static void ksz_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set) -{
- u8 data;
-
- ksz_read8(dev, addr, &data);
- if (set)
- data |= bits;
- else
- data &= ~bits;
- ksz_write8(dev, addr, data);
-}
-
-static void ksz_cfg32(struct ksz_device *dev, u32 addr, u32 bits, bool set) -{
- u32 data;
-
- ksz_read32(dev, addr, &data);
- if (set)
- data |= bits;
- else
- data &= ~bits;
- ksz_write32(dev, addr, data);
-}
-
-static void ksz_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits,
- bool set)
-{
- u32 addr;
- u8 data;
-
- addr = PORT_CTRL_ADDR(port, offset);
- ksz_read8(dev, addr, &data);
-
- if (set)
- data |= bits;
- else
- data &= ~bits;
-
- ksz_write8(dev, addr, data);
-}
-
-static void ksz_port_cfg32(struct ksz_device *dev, int port, int offset,
- u32 bits, bool set)
-{
- u32 addr;
- u32 data;
-
- addr = PORT_CTRL_ADDR(port, offset);
- ksz_read32(dev, addr, &data);
-
- if (set)
- data |= bits;
- else
- data &= ~bits;
-
- ksz_write32(dev, addr, data);
-}
-
-static int wait_vlan_ctrl_ready(struct ksz_device *dev, u32 waiton, int timeout) -{
- u8 data;
-
- do {
- ksz_read8(dev, REG_SW_VLAN_CTRL, &data);
- if (!(data & waiton))
- break;
- usleep_range(1, 10);
- } while (timeout-- > 0);
-
- if (timeout <= 0)
- return -ETIMEDOUT;
-
- return 0;
-}
-
-static int get_vlan_table(struct dsa_switch *ds, u16 vid, u32 *vlan_table) -{
- struct ksz_device *dev = ds->priv;
- int ret;
-
- mutex_lock(&dev->vlan_mutex);
-
- ksz_write16(dev, REG_SW_VLAN_ENTRY_INDEX__2, vid & VLAN_INDEX_M);
- ksz_write8(dev, REG_SW_VLAN_CTRL, VLAN_READ | VLAN_START);
-
- /* wait to be cleared */
- ret = wait_vlan_ctrl_ready(dev, VLAN_START, 1000);
- if (ret < 0) {
- dev_dbg(dev->dev, "Failed to read vlan table\n");
- goto exit;
- }
-
- ksz_read32(dev, REG_SW_VLAN_ENTRY__4, &vlan_table[0]);
- ksz_read32(dev, REG_SW_VLAN_ENTRY_UNTAG__4, &vlan_table[1]);
- ksz_read32(dev, REG_SW_VLAN_ENTRY_PORTS__4, &vlan_table[2]);
-
- ksz_write8(dev, REG_SW_VLAN_CTRL, 0);
-
-exit:
- mutex_unlock(&dev->vlan_mutex);
-
- return ret;
-}
-
-static int set_vlan_table(struct dsa_switch *ds, u16 vid, u32 *vlan_table) -{
- struct ksz_device *dev = ds->priv;
- int ret;
-
- mutex_lock(&dev->vlan_mutex);
-
- ksz_write32(dev, REG_SW_VLAN_ENTRY__4, vlan_table[0]);
- ksz_write32(dev, REG_SW_VLAN_ENTRY_UNTAG__4, vlan_table[1]);
- ksz_write32(dev, REG_SW_VLAN_ENTRY_PORTS__4, vlan_table[2]);
-
- ksz_write16(dev, REG_SW_VLAN_ENTRY_INDEX__2, vid & VLAN_INDEX_M);
- ksz_write8(dev, REG_SW_VLAN_CTRL, VLAN_START | VLAN_WRITE);
-
- /* wait to be cleared */
- ret = wait_vlan_ctrl_ready(dev, VLAN_START, 1000);
- if (ret < 0) {
- dev_dbg(dev->dev, "Failed to write vlan table\n");
- goto exit;
- }
-
- ksz_write8(dev, REG_SW_VLAN_CTRL, 0);
-
- /* update vlan cache table */
- dev->vlan_cache[vid].table[0] = vlan_table[0];
- dev->vlan_cache[vid].table[1] = vlan_table[1];
- dev->vlan_cache[vid].table[2] = vlan_table[2];
-
-exit:
- mutex_unlock(&dev->vlan_mutex);
-
- return ret;
-}
-
-static void read_table(struct dsa_switch *ds, u32 *table) -{
- struct ksz_device *dev = ds->priv;
-
- ksz_read32(dev, REG_SW_ALU_VAL_A, &table[0]);
- ksz_read32(dev, REG_SW_ALU_VAL_B, &table[1]);
- ksz_read32(dev, REG_SW_ALU_VAL_C, &table[2]);
- ksz_read32(dev, REG_SW_ALU_VAL_D, &table[3]);
-}
-
-static void write_table(struct dsa_switch *ds, u32 *table) -{
- struct ksz_device *dev = ds->priv;
-
- ksz_write32(dev, REG_SW_ALU_VAL_A, table[0]);
- ksz_write32(dev, REG_SW_ALU_VAL_B, table[1]);
- ksz_write32(dev, REG_SW_ALU_VAL_C, table[2]);
- ksz_write32(dev, REG_SW_ALU_VAL_D, table[3]);
-}
-
-static int wait_alu_ready(struct ksz_device *dev, u32 waiton, int timeout) -{
- u32 data;
-
- do {
- ksz_read32(dev, REG_SW_ALU_CTRL__4, &data);
- if (!(data & waiton))
- break;
- usleep_range(1, 10);
- } while (timeout-- > 0);
-
- if (timeout <= 0)
- return -ETIMEDOUT;
-
- return 0;
-}
-
-static int wait_alu_sta_ready(struct ksz_device *dev, u32 waiton, int timeout) -{
- u32 data;
-
- do {
- ksz_read32(dev, REG_SW_ALU_STAT_CTRL__4, &data);
- if (!(data & waiton))
- break;
- usleep_range(1, 10);
- } while (timeout-- > 0);
-
- if (timeout <= 0)
- return -ETIMEDOUT;
-
- return 0;
-}
-
-static int ksz_reset_switch(struct dsa_switch *ds) -{
- struct ksz_device *dev = ds->priv;
- u8 data8;
- u16 data16;
- u32 data32;
-
- /* reset switch */
- ksz_cfg(dev, REG_SW_OPERATION, SW_RESET, true);
-
- /* turn off SPI DO Edge select */
- ksz_read8(dev, REG_SW_GLOBAL_SERIAL_CTRL_0, &data8);
- data8 &= ~SPI_AUTO_EDGE_DETECTION;
- ksz_write8(dev, REG_SW_GLOBAL_SERIAL_CTRL_0, data8);
-
- /* default configuration */
- ksz_read8(dev, REG_SW_LUE_CTRL_1, &data8);
- data8 = SW_AGING_ENABLE | SW_LINK_AUTO_AGING |
- SW_SRC_ADDR_FILTER | SW_FLUSH_STP_TABLE | SW_FLUSH_MSTP_TABLE;
- ksz_write8(dev, REG_SW_LUE_CTRL_1, data8);
-
- /* disable interrupts */
- ksz_write32(dev, REG_SW_INT_MASK__4, SWITCH_INT_MASK);
- ksz_write32(dev, REG_SW_PORT_INT_MASK__4, 0x7F);
- ksz_read32(dev, REG_SW_PORT_INT_STATUS__4, &data32);
-
- /* set broadcast storm protection 10% rate */
- ksz_read16(dev, REG_SW_MAC_CTRL_2, &data16);
- data16 &= ~BROADCAST_STORM_RATE;
- data16 |= (BROADCAST_STORM_VALUE * BROADCAST_STORM_PROT_RATE) / 100;
- ksz_write16(dev, REG_SW_MAC_CTRL_2, data16);
-
- return 0;
-}
-
-static void port_setup(struct ksz_device *dev, int port, bool cpu_port) -{
- u8 data8;
- u16 data16;
-
- /* enable tag tail for host port */
- if (cpu_port)
- ksz_port_cfg(dev, port, REG_PORT_CTRL_0, PORT_TAIL_TAG_ENABLE,
- true);
-
- ksz_port_cfg(dev, port, REG_PORT_CTRL_0, PORT_MAC_LOOPBACK, false);
-
- /* set back pressure */
- ksz_port_cfg(dev, port, REG_PORT_MAC_CTRL_1, PORT_BACK_PRESSURE, true);
-
- /* set flow control */
- ksz_port_cfg(dev, port, REG_PORT_CTRL_0,
- PORT_FORCE_TX_FLOW_CTRL | PORT_FORCE_RX_FLOW_CTRL, true);
-
- /* enable broadcast storm limit */
- ksz_port_cfg(dev, port, P_BCAST_STORM_CTRL, PORT_BROADCAST_STORM, true);
-
- /* disable DiffServ priority */
- ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_DIFFSERV_PRIO_ENABLE, false);
-
- /* replace priority */
- ksz_port_cfg(dev, port, REG_PORT_MRI_MAC_CTRL, PORT_USER_PRIO_CEILING,
- false);
- ksz_port_cfg32(dev, port, REG_PORT_MTI_QUEUE_CTRL_0__4,
- MTI_PVID_REPLACE, false);
-
- /* enable 802.1p priority */
- ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_802_1P_PRIO_ENABLE, true);
-
- /* configure MAC to 1G & RGMII mode */
- ksz_pread8(dev, port, REG_PORT_XMII_CTRL_1, &data8);
- data8 |= PORT_RGMII_ID_EG_ENABLE;
- data8 &= ~PORT_MII_NOT_1GBIT;
- data8 &= ~PORT_MII_SEL_M;
- data8 |= PORT_RGMII_SEL;
- ksz_pwrite8(dev, port, REG_PORT_XMII_CTRL_1, data8);
-
- /* clear pending interrupts */
- ksz_pread16(dev, port, REG_PORT_PHY_INT_ENABLE, &data16);
-}
-
-static void ksz_config_cpu_port(struct dsa_switch *ds) -{
- struct ksz_device *dev = ds->priv;
- int i;
-
- ds->num_ports = dev->port_cnt;
-
- for (i = 0; i < ds->num_ports; i++) {
- if (dsa_is_cpu_port(ds, i) && (dev->cpu_ports & (1 << i))) {
- dev->cpu_port = i;
-
- /* enable cpu port */
- port_setup(dev, i, true);
- }
- }
-}
-
-static int ksz_setup(struct dsa_switch *ds) -{
- struct ksz_device *dev = ds->priv;
- int ret = 0;
-
- dev->vlan_cache = devm_kcalloc(dev->dev, sizeof(struct vlan_table),
- dev->num_vlans, GFP_KERNEL);
- if (!dev->vlan_cache)
- return -ENOMEM;
-
- ret = ksz_reset_switch(ds);
- if (ret) {
- dev_err(ds->dev, "failed to reset switch\n");
- return ret;
- }
-
- /* accept packet up to 2000bytes */
- ksz_cfg(dev, REG_SW_MAC_CTRL_1, SW_LEGAL_PACKET_DISABLE, true);
-
- ksz_config_cpu_port(ds);
-
- ksz_cfg(dev, REG_SW_MAC_CTRL_1, MULTICAST_STORM_DISABLE, true);
-
- /* queue based egress rate limit */
- ksz_cfg(dev, REG_SW_MAC_CTRL_5, SW_OUT_RATE_LIMIT_QUEUE_BASED, true);
-
- /* start switch */
- ksz_cfg(dev, REG_SW_OPERATION, SW_START, true);
-
- return 0;
-}
-
-static enum dsa_tag_protocol ksz_get_tag_protocol(struct dsa_switch *ds) -{
- return DSA_TAG_PROTO_KSZ;
-}
-
-static int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg) -{
- struct ksz_device *dev = ds->priv;
- u16 val = 0;
-
- ksz_pread16(dev, addr, 0x100 + (reg << 1), &val);
-
- return val;
-}
-
-static int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val) -{
- struct ksz_device *dev = ds->priv;
-
- ksz_pwrite16(dev, addr, 0x100 + (reg << 1), val);
-
- return 0;
-}
-
-static int ksz_enable_port(struct dsa_switch *ds, int port,
- struct phy_device *phy)
-{
- struct ksz_device *dev = ds->priv;
-
- /* setup slave port */
- port_setup(dev, port, false);
-
- return 0;
-}
-
-static void ksz_disable_port(struct dsa_switch *ds, int port,
- struct phy_device *phy)
-{
- struct ksz_device *dev = ds->priv;
-
- /* there is no port disable */
- ksz_port_cfg(dev, port, REG_PORT_CTRL_0, PORT_MAC_LOOPBACK, true);
-}
-
-static int ksz_sset_count(struct dsa_switch *ds) -{
- return TOTAL_SWITCH_COUNTER_NUM;
-}
-
-static void ksz_get_strings(struct dsa_switch *ds, int port, uint8_t *buf) -{
- int i;
-
- for (i = 0; i < TOTAL_SWITCH_COUNTER_NUM; i++) {
- memcpy(buf + i * ETH_GSTRING_LEN, mib_names[i].string,
- ETH_GSTRING_LEN);
- }
-}
-
-static void ksz_get_ethtool_stats(struct dsa_switch *ds, int port,
- uint64_t *buf)
-{
- struct ksz_device *dev = ds->priv;
- int i;
- u32 data;
- int timeout;
-
- mutex_lock(&dev->stats_mutex);
-
- for (i = 0; i < TOTAL_SWITCH_COUNTER_NUM; i++) {
- data = MIB_COUNTER_READ;
- data |= ((mib_names[i].index & 0xFF) << MIB_COUNTER_INDEX_S);
- ksz_pwrite32(dev, port, REG_PORT_MIB_CTRL_STAT__4, data);
-
- timeout = 1000;
- do {
- ksz_pread32(dev, port, REG_PORT_MIB_CTRL_STAT__4,
- &data);
- usleep_range(1, 10);
- if (!(data & MIB_COUNTER_READ))
- break;
- } while (timeout-- > 0);
-
- /* failed to read MIB. get out of loop */
- if (!timeout) {
- dev_dbg(dev->dev, "Failed to get MIB\n");
- break;
- }
-
- /* count resets upon read */
- ksz_pread32(dev, port, REG_PORT_MIB_DATA, &data);
-
- dev->mib_value[i] += (uint64_t)data;
- buf[i] = dev->mib_value[i];
- }
-
- mutex_unlock(&dev->stats_mutex);
-}
-
-static void ksz_port_stp_state_set(struct dsa_switch *ds, int port, u8 state) -{
- struct ksz_device *dev = ds->priv;
- u8 data;
-
- ksz_pread8(dev, port, P_STP_CTRL, &data);
- data &= ~(PORT_TX_ENABLE | PORT_RX_ENABLE | PORT_LEARN_DISABLE);
-
- switch (state) {
- case BR_STATE_DISABLED:
- data |= PORT_LEARN_DISABLE;
- break;
- case BR_STATE_LISTENING:
- data |= (PORT_RX_ENABLE | PORT_LEARN_DISABLE);
- break;
- case BR_STATE_LEARNING:
- data |= PORT_RX_ENABLE;
- break;
- case BR_STATE_FORWARDING:
- data |= (PORT_TX_ENABLE | PORT_RX_ENABLE);
- break;
- case BR_STATE_BLOCKING:
- data |= PORT_LEARN_DISABLE;
- break;
- default:
- dev_err(ds->dev, "invalid STP state: %d\n", state);
- return;
- }
-
- ksz_pwrite8(dev, port, P_STP_CTRL, data);
-}
-
-static void ksz_port_fast_age(struct dsa_switch *ds, int port) -{
- struct ksz_device *dev = ds->priv;
- u8 data8;
-
- ksz_read8(dev, REG_SW_LUE_CTRL_1, &data8);
- data8 |= SW_FAST_AGING;
- ksz_write8(dev, REG_SW_LUE_CTRL_1, data8);
-
- data8 &= ~SW_FAST_AGING;
- ksz_write8(dev, REG_SW_LUE_CTRL_1, data8);
-}
-
-static int ksz_port_vlan_filtering(struct dsa_switch *ds, int port, bool flag) -{
- struct ksz_device *dev = ds->priv;
-
- if (flag) {
- ksz_port_cfg(dev, port, REG_PORT_LUE_CTRL,
- PORT_VLAN_LOOKUP_VID_0, true);
- ksz_cfg32(dev, REG_SW_QM_CTRL__4, UNICAST_VLAN_BOUNDARY, true);
- ksz_cfg(dev, REG_SW_LUE_CTRL_0, SW_VLAN_ENABLE, true);
- } else {
- ksz_cfg(dev, REG_SW_LUE_CTRL_0, SW_VLAN_ENABLE, false);
- ksz_cfg32(dev, REG_SW_QM_CTRL__4, UNICAST_VLAN_BOUNDARY, false);
- ksz_port_cfg(dev, port, REG_PORT_LUE_CTRL,
- PORT_VLAN_LOOKUP_VID_0, false);
- }
-
- return 0;
-}
-
-static int ksz_port_vlan_prepare(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_vlan *vlan,
- struct switchdev_trans *trans)
-{
- /* nothing needed */
-
- return 0;
-}
-
-static void ksz_port_vlan_add(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_vlan *vlan,
- struct switchdev_trans *trans)
-{
- struct ksz_device *dev = ds->priv;
- u32 vlan_table[3];
- u16 vid;
- bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
-
- for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
- if (get_vlan_table(ds, vid, vlan_table)) {
- dev_dbg(dev->dev, "Failed to get vlan table\n");
- return;
- }
-
- vlan_table[0] = VLAN_VALID | (vid & VLAN_FID_M);
- if (untagged)
- vlan_table[1] |= BIT(port);
- else
- vlan_table[1] &= ~BIT(port);
- vlan_table[1] &= ~(BIT(dev->cpu_port));
-
- vlan_table[2] |= BIT(port) | BIT(dev->cpu_port);
-
- if (set_vlan_table(ds, vid, vlan_table)) {
- dev_dbg(dev->dev, "Failed to set vlan table\n");
- return;
- }
-
- /* change PVID */
- if (vlan->flags & BRIDGE_VLAN_INFO_PVID)
- ksz_pwrite16(dev, port, REG_PORT_DEFAULT_VID, vid);
- }
-}
-
-static int ksz_port_vlan_del(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_vlan *vlan)
-{
- struct ksz_device *dev = ds->priv;
- bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
- u32 vlan_table[3];
- u16 vid;
- u16 pvid;
-
- ksz_pread16(dev, port, REG_PORT_DEFAULT_VID, &pvid);
- pvid = pvid & 0xFFF;
-
- for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
- if (get_vlan_table(ds, vid, vlan_table)) {
- dev_dbg(dev->dev, "Failed to get vlan table\n");
- return -ETIMEDOUT;
- }
-
- vlan_table[2] &= ~BIT(port);
-
- if (pvid == vid)
- pvid = 1;
-
- if (untagged)
- vlan_table[1] &= ~BIT(port);
-
- if (set_vlan_table(ds, vid, vlan_table)) {
- dev_dbg(dev->dev, "Failed to set vlan table\n");
- return -ETIMEDOUT;
- }
- }
-
- ksz_pwrite16(dev, port, REG_PORT_DEFAULT_VID, pvid);
-
- return 0;
-}
-
-struct alu_struct {
- /* entry 1 */
- u8 is_static:1;
- u8 is_src_filter:1;
- u8 is_dst_filter:1;
- u8 prio_age:3;
- u32 _reserv_0_1:23;
- u8 mstp:3;
- /* entry 2 */
- u8 is_override:1;
- u8 is_use_fid:1;
- u32 _reserv_1_1:23;
- u8 port_forward:7;
- /* entry 3 & 4*/
- u32 _reserv_2_1:9;
- u8 fid:7;
- u8 mac[ETH_ALEN];
-};
-
-static int ksz_port_fdb_add(struct dsa_switch *ds, int port,
- const unsigned char *addr, u16 vid)
-{
- struct ksz_device *dev = ds->priv;
- u32 alu_table[4];
- u32 data;
- int ret = 0;
-
- mutex_lock(&dev->alu_mutex);
-
- /* find any entry with mac & vid */
- data = vid << ALU_FID_INDEX_S;
- data |= ((addr[0] << 8) | addr[1]);
- ksz_write32(dev, REG_SW_ALU_INDEX_0, data);
-
- data = ((addr[2] << 24) | (addr[3] << 16));
- data |= ((addr[4] << 8) | addr[5]);
- ksz_write32(dev, REG_SW_ALU_INDEX_1, data);
-
- /* start read operation */
- ksz_write32(dev, REG_SW_ALU_CTRL__4, ALU_READ | ALU_START);
-
- /* wait to be finished */
- ret = wait_alu_ready(dev, ALU_START, 1000);
- if (ret < 0) {
- dev_dbg(dev->dev, "Failed to read ALU\n");
- goto exit;
- }
-
- /* read ALU entry */
- read_table(ds, alu_table);
-
- /* update ALU entry */
- alu_table[0] = ALU_V_STATIC_VALID;
- alu_table[1] |= BIT(port);
- if (vid)
- alu_table[1] |= ALU_V_USE_FID;
- alu_table[2] = (vid << ALU_V_FID_S);
- alu_table[2] |= ((addr[0] << 8) | addr[1]);
- alu_table[3] = ((addr[2] << 24) | (addr[3] << 16));
- alu_table[3] |= ((addr[4] << 8) | addr[5]);
-
- write_table(ds, alu_table);
-
- ksz_write32(dev, REG_SW_ALU_CTRL__4, ALU_WRITE | ALU_START);
-
- /* wait to be finished */
- ret = wait_alu_ready(dev, ALU_START, 1000);
- if (ret < 0)
- dev_dbg(dev->dev, "Failed to write ALU\n");
-
-exit:
- mutex_unlock(&dev->alu_mutex);
-
- return ret;
-}
-
-static int ksz_port_fdb_del(struct dsa_switch *ds, int port,
- const unsigned char *addr, u16 vid)
-{
- struct ksz_device *dev = ds->priv;
- u32 alu_table[4];
- u32 data;
- int ret = 0;
-
- mutex_lock(&dev->alu_mutex);
-
- /* read any entry with mac & vid */
- data = vid << ALU_FID_INDEX_S;
- data |= ((addr[0] << 8) | addr[1]);
- ksz_write32(dev, REG_SW_ALU_INDEX_0, data);
-
- data = ((addr[2] << 24) | (addr[3] << 16));
- data |= ((addr[4] << 8) | addr[5]);
- ksz_write32(dev, REG_SW_ALU_INDEX_1, data);
-
- /* start read operation */
- ksz_write32(dev, REG_SW_ALU_CTRL__4, ALU_READ | ALU_START);
-
- /* wait to be finished */
- ret = wait_alu_ready(dev, ALU_START, 1000);
- if (ret < 0) {
- dev_dbg(dev->dev, "Failed to read ALU\n");
- goto exit;
- }
-
- ksz_read32(dev, REG_SW_ALU_VAL_A, &alu_table[0]);
- if (alu_table[0] & ALU_V_STATIC_VALID) {
- ksz_read32(dev, REG_SW_ALU_VAL_B, &alu_table[1]);
- ksz_read32(dev, REG_SW_ALU_VAL_C, &alu_table[2]);
- ksz_read32(dev, REG_SW_ALU_VAL_D, &alu_table[3]);
-
- /* clear forwarding port */
- alu_table[2] &= ~BIT(port);
-
- /* if there is no port to forward, clear table */
- if ((alu_table[2] & ALU_V_PORT_MAP) == 0) {
- alu_table[0] = 0;
- alu_table[1] = 0;
- alu_table[2] = 0;
- alu_table[3] = 0;
- }
- } else {
- alu_table[0] = 0;
- alu_table[1] = 0;
- alu_table[2] = 0;
- alu_table[3] = 0;
- }
-
- write_table(ds, alu_table);
-
- ksz_write32(dev, REG_SW_ALU_CTRL__4, ALU_WRITE | ALU_START);
-
- /* wait to be finished */
- ret = wait_alu_ready(dev, ALU_START, 1000);
- if (ret < 0)
- dev_dbg(dev->dev, "Failed to write ALU\n");
-
-exit:
- mutex_unlock(&dev->alu_mutex);
-
- return ret;
-}
-
-static void convert_alu(struct alu_struct *alu, u32 *alu_table) -{
- alu->is_static = !!(alu_table[0] & ALU_V_STATIC_VALID);
- alu->is_src_filter = !!(alu_table[0] & ALU_V_SRC_FILTER);
- alu->is_dst_filter = !!(alu_table[0] & ALU_V_DST_FILTER);
- alu->prio_age = (alu_table[0] >> ALU_V_PRIO_AGE_CNT_S) &
- ALU_V_PRIO_AGE_CNT_M;
- alu->mstp = alu_table[0] & ALU_V_MSTP_M;
-
- alu->is_override = !!(alu_table[1] & ALU_V_OVERRIDE);
- alu->is_use_fid = !!(alu_table[1] & ALU_V_USE_FID);
- alu->port_forward = alu_table[1] & ALU_V_PORT_MAP;
-
- alu->fid = (alu_table[2] >> ALU_V_FID_S) & ALU_V_FID_M;
-
- alu->mac[0] = (alu_table[2] >> 8) & 0xFF;
- alu->mac[1] = alu_table[2] & 0xFF;
- alu->mac[2] = (alu_table[3] >> 24) & 0xFF;
- alu->mac[3] = (alu_table[3] >> 16) & 0xFF;
- alu->mac[4] = (alu_table[3] >> 8) & 0xFF;
- alu->mac[5] = alu_table[3] & 0xFF;
-}
-
-static int ksz_port_fdb_dump(struct dsa_switch *ds, int port,
- dsa_fdb_dump_cb_t *cb, void *data)
-{
- struct ksz_device *dev = ds->priv;
- int ret = 0;
- u32 ksz_data;
- u32 alu_table[4];
- struct alu_struct alu;
- int timeout;
-
- mutex_lock(&dev->alu_mutex);
-
- /* start ALU search */
- ksz_write32(dev, REG_SW_ALU_CTRL__4, ALU_START | ALU_SEARCH);
-
- do {
- timeout = 1000;
- do {
- ksz_read32(dev, REG_SW_ALU_CTRL__4, &ksz_data);
- if ((ksz_data & ALU_VALID) || !(ksz_data & ALU_START))
- break;
- usleep_range(1, 10);
- } while (timeout-- > 0);
-
- if (!timeout) {
- dev_dbg(dev->dev, "Failed to search ALU\n");
- ret = -ETIMEDOUT;
- goto exit;
- }
-
- /* read ALU table */
- read_table(ds, alu_table);
-
- convert_alu(&alu, alu_table);
-
- if (alu.port_forward & BIT(port)) {
- ret = cb(alu.mac, alu.fid, alu.is_static, data);
- if (ret)
- goto exit;
- }
- } while (ksz_data & ALU_START);
-
-exit:
-
- /* stop ALU search */
- ksz_write32(dev, REG_SW_ALU_CTRL__4, 0);
-
- mutex_unlock(&dev->alu_mutex);
-
- return ret;
-}
-
-static int ksz_port_mdb_prepare(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_mdb *mdb,
- struct switchdev_trans *trans)
-{
- /* nothing to do */
- return 0;
-}
-
-static void ksz_port_mdb_add(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_mdb *mdb,
- struct switchdev_trans *trans)
-{
- struct ksz_device *dev = ds->priv;
- u32 static_table[4];
- u32 data;
- int index;
- u32 mac_hi, mac_lo;
-
- mac_hi = ((mdb->addr[0] << 8) | mdb->addr[1]);
- mac_lo = ((mdb->addr[2] << 24) | (mdb->addr[3] << 16));
- mac_lo |= ((mdb->addr[4] << 8) | mdb->addr[5]);
-
- mutex_lock(&dev->alu_mutex);
-
- for (index = 0; index < dev->num_statics; index++) {
- /* find empty slot first */
- data = (index << ALU_STAT_INDEX_S) |
- ALU_STAT_READ | ALU_STAT_START;
- ksz_write32(dev, REG_SW_ALU_STAT_CTRL__4, data);
-
- /* wait to be finished */
- if (wait_alu_sta_ready(dev, ALU_STAT_START, 1000) < 0) {
- dev_dbg(dev->dev, "Failed to read ALU STATIC\n");
- goto exit;
- }
-
- /* read ALU static table */
- read_table(ds, static_table);
-
- if (static_table[0] & ALU_V_STATIC_VALID) {
- /* check this has same vid & mac address */
- if (((static_table[2] >> ALU_V_FID_S) == (mdb->vid)) &&
- ((static_table[2] & ALU_V_MAC_ADDR_HI) == mac_hi) &&
- (static_table[3] == mac_lo)) {
- /* found matching one */
- break;
- }
- } else {
- /* found empty one */
- break;
- }
- }
-
- /* no available entry */
- if (index == dev->num_statics)
- goto exit;
-
- /* add entry */
- static_table[0] = ALU_V_STATIC_VALID;
- static_table[1] |= BIT(port);
- if (mdb->vid)
- static_table[1] |= ALU_V_USE_FID;
- static_table[2] = (mdb->vid << ALU_V_FID_S);
- static_table[2] |= mac_hi;
- static_table[3] = mac_lo;
-
- write_table(ds, static_table);
-
- data = (index << ALU_STAT_INDEX_S) | ALU_STAT_START;
- ksz_write32(dev, REG_SW_ALU_STAT_CTRL__4, data);
-
- /* wait to be finished */
- if (wait_alu_sta_ready(dev, ALU_STAT_START, 1000) < 0)
- dev_dbg(dev->dev, "Failed to read ALU STATIC\n");
-
-exit:
- mutex_unlock(&dev->alu_mutex);
-}
-
-static int ksz_port_mdb_del(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_mdb *mdb)
-{
- struct ksz_device *dev = ds->priv;
- u32 static_table[4];
- u32 data;
- int index;
- int ret = 0;
- u32 mac_hi, mac_lo;
-
- mac_hi = ((mdb->addr[0] << 8) | mdb->addr[1]);
- mac_lo = ((mdb->addr[2] << 24) | (mdb->addr[3] << 16));
- mac_lo |= ((mdb->addr[4] << 8) | mdb->addr[5]);
-
- mutex_lock(&dev->alu_mutex);
-
- for (index = 0; index < dev->num_statics; index++) {
- /* find empty slot first */
- data = (index << ALU_STAT_INDEX_S) |
- ALU_STAT_READ | ALU_STAT_START;
- ksz_write32(dev, REG_SW_ALU_STAT_CTRL__4, data);
-
- /* wait to be finished */
- ret = wait_alu_sta_ready(dev, ALU_STAT_START, 1000);
- if (ret < 0) {
- dev_dbg(dev->dev, "Failed to read ALU STATIC\n");
- goto exit;
- }
-
- /* read ALU static table */
- read_table(ds, static_table);
-
- if (static_table[0] & ALU_V_STATIC_VALID) {
- /* check this has same vid & mac address */
-
- if (((static_table[2] >> ALU_V_FID_S) == (mdb->vid)) &&
- ((static_table[2] & ALU_V_MAC_ADDR_HI) == mac_hi) &&
- (static_table[3] == mac_lo)) {
- /* found matching one */
- break;
- }
- }
- }
-
- /* no available entry */
- if (index == dev->num_statics) {
- ret = -EINVAL;
- goto exit;
- }
-
- /* clear port */
- static_table[1] &= ~BIT(port);
-
- if ((static_table[1] & ALU_V_PORT_MAP) == 0) {
- /* delete entry */
- static_table[0] = 0;
- static_table[1] = 0;
- static_table[2] = 0;
- static_table[3] = 0;
- }
-
- write_table(ds, static_table);
-
- data = (index << ALU_STAT_INDEX_S) | ALU_STAT_START;
- ksz_write32(dev, REG_SW_ALU_STAT_CTRL__4, data);
-
- /* wait to be finished */
- ret = wait_alu_sta_ready(dev, ALU_STAT_START, 1000);
- if (ret < 0)
- dev_dbg(dev->dev, "Failed to read ALU STATIC\n");
-
-exit:
- mutex_unlock(&dev->alu_mutex);
-
- return ret;
-}
-
-static int ksz_port_mirror_add(struct dsa_switch *ds, int port,
- struct dsa_mall_mirror_tc_entry *mirror,
- bool ingress)
-{
- struct ksz_device *dev = ds->priv;
-
- if (ingress)
- ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_RX, true);
- else
- ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, true);
-
- ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_SNIFFER, false);
-
- /* configure mirror port */
- ksz_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL,
- PORT_MIRROR_SNIFFER, true);
-
- ksz_cfg(dev, S_MIRROR_CTRL, SW_MIRROR_RX_TX, false);
-
- return 0;
-}
-
-static void ksz_port_mirror_del(struct dsa_switch *ds, int port,
- struct dsa_mall_mirror_tc_entry *mirror)
-{
- struct ksz_device *dev = ds->priv;
- u8 data;
-
- if (mirror->ingress)
- ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_RX, false);
- else
- ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, false);
-
- ksz_pread8(dev, port, P_MIRROR_CTRL, &data);
-
- if (!(data & (PORT_MIRROR_RX | PORT_MIRROR_TX)))
- ksz_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL,
- PORT_MIRROR_SNIFFER, false);
-}
-
-static const struct dsa_switch_ops ksz_switch_ops = {
- .get_tag_protocol = ksz_get_tag_protocol,
- .setup = ksz_setup,
- .phy_read = ksz_phy_read16,
- .phy_write = ksz_phy_write16,
- .port_enable = ksz_enable_port,
- .port_disable = ksz_disable_port,
- .get_strings = ksz_get_strings,
- .get_ethtool_stats = ksz_get_ethtool_stats,
- .get_sset_count = ksz_sset_count,
- .port_stp_state_set = ksz_port_stp_state_set,
- .port_fast_age = ksz_port_fast_age,
- .port_vlan_filtering = ksz_port_vlan_filtering,
- .port_vlan_prepare = ksz_port_vlan_prepare,
- .port_vlan_add = ksz_port_vlan_add,
- .port_vlan_del = ksz_port_vlan_del,
- .port_fdb_dump = ksz_port_fdb_dump,
- .port_fdb_add = ksz_port_fdb_add,
- .port_fdb_del = ksz_port_fdb_del,
- .port_mdb_prepare = ksz_port_mdb_prepare,
- .port_mdb_add = ksz_port_mdb_add,
- .port_mdb_del = ksz_port_mdb_del,
- .port_mirror_add = ksz_port_mirror_add,
- .port_mirror_del = ksz_port_mirror_del,
-};
-
-struct ksz_chip_data {
- u32 chip_id;
- const char *dev_name;
- int num_vlans;
- int num_alus;
- int num_statics;
- int cpu_ports;
- int port_cnt;
-};
-
-static const struct ksz_chip_data ksz_switch_chips[] = {
- {
- .chip_id = 0x00947700,
- .dev_name = "KSZ9477",
- .num_vlans = 4096,
- .num_alus = 4096,
- .num_statics = 16,
- .cpu_ports = 0x7F, /* can be configured as cpu port */
- .port_cnt = 7, /* total physical port count */
- },
-};
-
-static int ksz_switch_init(struct ksz_device *dev) -{
- int i;
-
- mutex_init(&dev->reg_mutex);
- mutex_init(&dev->stats_mutex);
- mutex_init(&dev->alu_mutex);
- mutex_init(&dev->vlan_mutex);
-
- dev->ds->ops = &ksz_switch_ops;
-
- for (i = 0; i < ARRAY_SIZE(ksz_switch_chips); i++) {
- const struct ksz_chip_data *chip = &ksz_switch_chips[i];
-
- if (dev->chip_id == chip->chip_id) {
- dev->name = chip->dev_name;
- dev->num_vlans = chip->num_vlans;
- dev->num_alus = chip->num_alus;
- dev->num_statics = chip->num_statics;
- dev->port_cnt = chip->port_cnt;
- dev->cpu_ports = chip->cpu_ports;
-
- break;
- }
- }
-
- /* no switch found */
- if (!dev->port_cnt)
- return -ENODEV;
-
- return 0;
-}
-
struct ksz_device *ksz_switch_alloc(struct device *base,
const struct ksz_io_ops *ops,
void *priv)
@@ -1159,53 +57,43 @@ struct ksz_device *ksz_switch_alloc(struct device *base, } EXPORT_SYMBOL(ksz_switch_alloc);

-int ksz_switch_detect(struct ksz_device *dev) -{
- u8 data8;
- u32 id32;
- int ret;
-
- /* turn off SPI DO Edge select */
- ret = ksz_read8(dev, REG_SW_GLOBAL_SERIAL_CTRL_0, &data8);
- if (ret)
- return ret;
-
- data8 &= ~SPI_AUTO_EDGE_DETECTION;
- ret = ksz_write8(dev, REG_SW_GLOBAL_SERIAL_CTRL_0, data8);
- if (ret)
- return ret;
-
- /* read chip id */
- ret = ksz_read32(dev, REG_CHIP_ID0__1, &id32);
- if (ret)
- return ret;
-
- dev->chip_id = id32;
-
- return 0;
-}
-EXPORT_SYMBOL(ksz_switch_detect);
-
-int ksz_switch_register(struct ksz_device *dev)
+int ksz_switch_register(struct ksz_device *dev,
+ const struct ksz_dev_ops *ops)
{
int ret;

if (dev->pdata)
dev->chip_id = dev->pdata->chip_id;

- if (ksz_switch_detect(dev))
+ dev->dev_ops = ops;
+
+ if (dev->dev_ops->detect(dev))
return -EINVAL;

- ret = ksz_switch_init(dev);
+ ret = dev->dev_ops->init(dev);
if (ret)
return ret;

- return dsa_register_switch(dev->ds);
+ dev->interface = PHY_INTERFACE_MODE_MII;
+ if (dev->dev->of_node) {
+ ret = of_get_phy_mode(dev->dev->of_node);
+ if (ret >= 0)
+ dev->interface = ret;
+ }
+
+ ret = dsa_register_switch(dev->ds);
+ if (ret) {
+ dev->dev_ops->exit(dev);
+ return ret;
+ }
+
+ return 0;
}
EXPORT_SYMBOL(ksz_switch_register);

void ksz_switch_remove(struct ksz_device *dev) {
+ dev->dev_ops->exit(dev);
dsa_unregister_switch(dev->ds);
}
EXPORT_SYMBOL(ksz_switch_remove);

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