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Subject[PATCH RFC 3/5] Add KSZ8795 switch driver
Date
From: Tristram Ha <Tristram.Ha@microchip.com>

Add KSZ8795 switch support with function code.

Signed-off-by: Tristram Ha <Tristram.Ha@microchip.com>
---
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
new file mode 100644
index 0000000..e4d4e6a
--- /dev/null
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -0,0 +1,2066 @@
+/*
+ * Microchip KSZ8795 switch driver
+ *
+ * Copyright (C) 2017 Microchip Technology Inc.
+ * Tristram Ha <Tristram.Ha@microchip.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <linux/gpio.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_data/microchip-ksz.h>
+#include <linux/phy.h>
+#include <linux/etherdevice.h>
+#include <linux/if_bridge.h>
+#include <net/dsa.h>
+#include <net/switchdev.h>
+
+#include "ksz_priv.h"
+#include "ksz8795.h"
+
+/**
+ * Some counters do not need to be read too often because they are less likely
+ * to increase much.
+ */
+static const struct {
+ int interval;
+ char string[ETH_GSTRING_LEN];
+} mib_names[TOTAL_SWITCH_COUNTER_NUM] = {
+ { 1, "rx_hi" },
+ { 4, "rx_undersize" },
+ { 4, "rx_fragments" },
+ { 4, "rx_oversize" },
+ { 4, "rx_jabbers" },
+ { 4, "rx_symbol_err" },
+ { 4, "rx_crc_err" },
+ { 4, "rx_align_err" },
+ { 4, "rx_mac_ctrl" },
+ { 1, "rx_pause" },
+ { 1, "rx_bcast" },
+ { 1, "rx_mcast" },
+ { 1, "rx_ucast" },
+ { 2, "rx_64_or_less" },
+ { 2, "rx_65_127" },
+ { 2, "rx_128_255" },
+ { 2, "rx_256_511" },
+ { 2, "rx_512_1023" },
+ { 2, "rx_1024_1522" },
+ { 2, "rx_1523_2000" },
+ { 2, "rx_2001" },
+ { 1, "tx_hi" },
+ { 4, "tx_late_col" },
+ { 1, "tx_pause" },
+ { 1, "tx_bcast" },
+ { 1, "tx_mcast" },
+ { 1, "tx_ucast" },
+ { 4, "tx_deferred" },
+ { 4, "tx_total_col" },
+ { 4, "tx_exc_col" },
+ { 4, "tx_single_col" },
+ { 4, "tx_mult_col" },
+ { 1, "rx_total" },
+ { 1, "tx_total" },
+ { 2, "rx_discards" },
+ { 2, "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_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 int chk_last_port(struct ksz_device *dev, int p)
+{
+ if (dev->last_port && p == dev->last_port)
+ p = dev->cpu_port;
+ return p;
+}
+
+static int ksz_reset_switch(struct ksz_device *dev)
+{
+ /* reset switch */
+ ksz_write8(dev, REG_POWER_MANAGEMENT_1,
+ SW_SOFTWARE_POWER_DOWN << SW_POWER_MANAGEMENT_MODE_S);
+ ksz_write8(dev, REG_POWER_MANAGEMENT_1, 0);
+
+ return 0;
+}
+
+static void port_set_prio_queue(struct ksz_device *dev, int port, int queue)
+{
+ u8 hi;
+ u8 lo;
+
+ switch (queue) {
+ case 4:
+ case 3:
+ queue = PORT_QUEUE_SPLIT_4;
+ break;
+ case 2:
+ queue = PORT_QUEUE_SPLIT_2;
+ break;
+ default:
+ queue = PORT_QUEUE_SPLIT_1;
+ }
+ ksz_pread8(dev, port, REG_PORT_CTRL_0, &lo);
+ ksz_pread8(dev, port, P_DROP_TAG_CTRL, &hi);
+ lo &= ~PORT_QUEUE_SPLIT_L;
+ if (queue & 1)
+ lo |= PORT_QUEUE_SPLIT_L;
+ hi &= ~PORT_QUEUE_SPLIT_H;
+ if (queue & 2)
+ hi |= PORT_QUEUE_SPLIT_H;
+ ksz_pwrite8(dev, port, REG_PORT_CTRL_0, lo);
+ ksz_pwrite8(dev, port, P_DROP_TAG_CTRL, hi);
+
+ /* Default is port based for egress rate limit. */
+ if (queue)
+ ksz_cfg(dev, REG_SW_CTRL_19, SW_OUT_RATE_LIMIT_QUEUE_BASED,
+ true);
+}
+
+static void port_r_mib_cnt(struct ksz_device *dev, int port, u16 addr, u64 *cnt)
+{
+ u32 data;
+ u16 ctrl_addr;
+ u8 check;
+ int timeout;
+
+ ctrl_addr = addr + SWITCH_COUNTER_NUM * port;
+
+ ctrl_addr |= IND_ACC_TABLE(TABLE_MIB | TABLE_READ);
+ mutex_lock(&dev->stats_mutex);
+ ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr);
+
+ for (timeout = 1; timeout > 0; timeout--) {
+ ksz_read8(dev, REG_IND_MIB_CHECK, &check);
+
+ if (check & MIB_COUNTER_VALID) {
+ ksz_read32(dev, REG_IND_DATA_LO, &data);
+ if (check & MIB_COUNTER_OVERFLOW)
+ *cnt += MIB_COUNTER_VALUE + 1;
+ *cnt += data & MIB_COUNTER_VALUE;
+ break;
+ }
+ }
+ mutex_unlock(&dev->stats_mutex);
+}
+
+static void port_r_mib_pkt(struct ksz_device *dev, int port, u16 addr, u64 *cnt)
+{
+ u32 data;
+ u16 ctrl_addr;
+ u8 check;
+ int timeout;
+
+ addr -= SWITCH_COUNTER_NUM;
+ ctrl_addr = (KS_MIB_TOTAL_RX_1 - KS_MIB_TOTAL_RX_0) * port;
+ ctrl_addr += addr + KS_MIB_TOTAL_RX_0;
+
+ ctrl_addr |= IND_ACC_TABLE(TABLE_MIB | TABLE_READ);
+ mutex_lock(&dev->stats_mutex);
+ ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr);
+
+ for (timeout = 1; timeout > 0; timeout--) {
+ ksz_read8(dev, REG_IND_MIB_CHECK, &check);
+
+ if (check & MIB_COUNTER_VALID) {
+ ksz_read32(dev, REG_IND_DATA_LO, &data);
+ if (addr < 2) {
+ u64 total;
+
+ total = check & MIB_TOTAL_BYTES_H;
+ total <<= 32;
+ *cnt += total;
+ *cnt += data;
+ if (check & MIB_COUNTER_OVERFLOW) {
+ total = MIB_TOTAL_BYTES_H + 1;
+ total <<= 32;
+ *cnt += total;
+ }
+ } else {
+ if (check & MIB_COUNTER_OVERFLOW)
+ *cnt += MIB_PACKET_DROPPED + 1;
+ *cnt += data & MIB_PACKET_DROPPED;
+ }
+ break;
+ }
+ }
+ mutex_unlock(&dev->stats_mutex);
+}
+
+static int port_r_cnt(struct ksz_device *dev, int port)
+{
+ struct ksz_port_mib *mib = &dev->ports[port].mib;
+ struct ksz_port_mib_info *info;
+
+ /* Some ports may not have MIB counters before SWITCH_COUNTER_NUM. */
+ while (mib->cnt_ptr < SWITCH_COUNTER_NUM) {
+ info = &mib->info[mib->cnt_ptr];
+ spin_lock(&dev->mib_read_lock);
+ ++info->read_cnt;
+ if (info->read_cnt >= info->read_max) {
+ info->read_cnt = 0;
+ port_r_mib_cnt(dev, port, mib->cnt_ptr,
+ &info->counter);
+ }
+ spin_unlock(&dev->mib_read_lock);
+ ++mib->cnt_ptr;
+ }
+
+ /* Some ports may not have MIB counters after SWITCH_COUNTER_NUM. */
+ while (mib->cnt_ptr < TOTAL_SWITCH_COUNTER_NUM) {
+ info = &mib->info[mib->cnt_ptr];
+ spin_lock(&dev->mib_read_lock);
+ ++info->read_cnt;
+ if (info->read_cnt >= info->read_max) {
+ info->read_cnt = 0;
+ port_r_mib_pkt(dev, port, mib->cnt_ptr,
+ &info->counter);
+ }
+ spin_unlock(&dev->mib_read_lock);
+ ++mib->cnt_ptr;
+ }
+ mib->cnt_ptr = 0;
+ return 0;
+}
+
+static void port_init_cnt(struct ksz_device *dev, int port)
+{
+ struct ksz_port_mib *mib = &dev->ports[port].mib;
+ struct ksz_port_mib_info *info;
+
+ mib->cnt_ptr = 0;
+
+ /* Some ports may not have MIB counters before SWITCH_COUNTER_NUM. */
+ while (mib->cnt_ptr < SWITCH_COUNTER_NUM) {
+ info = &mib->info[mib->cnt_ptr];
+ info->read_cnt = 0;
+ info->read_max = mib_names[mib->cnt_ptr].interval;
+ port_r_mib_cnt(dev, port, mib->cnt_ptr,
+ &info->counter);
+ info->counter = 0;
+ ++mib->cnt_ptr;
+ }
+
+ /* Some ports may not have MIB counters after SWITCH_COUNTER_NUM. */
+ while (mib->cnt_ptr < TOTAL_SWITCH_COUNTER_NUM) {
+ info->read_cnt = 0;
+ info->read_max = mib_names[mib->cnt_ptr].interval;
+ port_r_mib_pkt(dev, port, mib->cnt_ptr,
+ &info->counter);
+ info->counter = 0;
+ ++mib->cnt_ptr;
+ }
+ mib->cnt_ptr = 0;
+ mib->time = jiffies;
+}
+
+static void ksz_r_table_64(struct ksz_device *dev, int table, u16 addr,
+ u64 *data)
+{
+ u16 ctrl_addr;
+
+ ctrl_addr = IND_ACC_TABLE(table | TABLE_READ) | addr;
+
+ ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr);
+ dev->ops->get(dev, REG_IND_DATA_HI, data, sizeof(u64));
+ *data = be64_to_cpu(*data);
+}
+
+static void ksz_w_table_64(struct ksz_device *dev, int table, u16 addr,
+ u64 data)
+{
+ u16 ctrl_addr;
+
+ ctrl_addr = IND_ACC_TABLE(table) | addr;
+ data = cpu_to_be64(data);
+
+ dev->ops->set(dev, REG_IND_DATA_HI, &data, sizeof(u64));
+ ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr);
+}
+
+static int valid_dyn_entry(struct ksz_device *dev, u8 *data)
+{
+ int timeout = 100;
+
+ do {
+ ksz_read8(dev, REG_IND_DATA_CHECK, data);
+ timeout--;
+ } while ((*data & DYNAMIC_MAC_TABLE_NOT_READY) && timeout);
+
+ /* Entry is not ready for accessing. */
+ if (*data & DYNAMIC_MAC_TABLE_NOT_READY) {
+ return 1;
+ /* Entry is ready for accessing. */
+ } else {
+ ksz_read8(dev, REG_IND_DATA_8, data);
+
+ /* There is no valid entry in the table. */
+ if (*data & DYNAMIC_MAC_TABLE_MAC_EMPTY)
+ return 2;
+ }
+ return 0;
+}
+
+static int ksz_r_dyn_mac_table(struct ksz_device *dev, u16 addr, u8 *mac_addr,
+ u8 *fid, u8 *src_port, u8 *timestamp,
+ u16 *entries)
+{
+ u32 data_hi;
+ u32 data_lo;
+ u16 ctrl_addr;
+ int rc;
+ u8 data;
+
+ ctrl_addr = IND_ACC_TABLE(TABLE_DYNAMIC_MAC | TABLE_READ) | addr;
+
+ ksz_write16(dev, REG_IND_CTRL_0, ctrl_addr);
+
+ rc = valid_dyn_entry(dev, &data);
+ if (rc == 1) {
+ if (addr == 0)
+ *entries = 0;
+ } else if (rc == 2) {
+ *entries = 0;
+ /* At least one valid entry in the table. */
+ } else {
+ u64 buf;
+
+ dev->ops->get(dev, REG_IND_DATA_HI, &buf, sizeof(buf));
+ buf = be64_to_cpu(buf);
+ data_hi = (u32)(buf >> 32);
+ data_lo = (u32)buf;
+
+ /* Check out how many valid entry in the table. */
+ *entries = (u16)(((((u16)
+ data & DYNAMIC_MAC_TABLE_ENTRIES_H) <<
+ DYNAMIC_MAC_ENTRIES_H_S) |
+ (((data_hi & DYNAMIC_MAC_TABLE_ENTRIES) >>
+ DYNAMIC_MAC_ENTRIES_S))) + 1);
+
+ *fid = (u8)((data_hi & DYNAMIC_MAC_TABLE_FID) >>
+ DYNAMIC_MAC_FID_S);
+ *src_port = (u8)((data_hi & DYNAMIC_MAC_TABLE_SRC_PORT) >>
+ DYNAMIC_MAC_SRC_PORT_S);
+ *timestamp = (u8)((
+ data_hi & DYNAMIC_MAC_TABLE_TIMESTAMP) >>
+ DYNAMIC_MAC_TIMESTAMP_S);
+
+ mac_addr[5] = (u8)data_lo;
+ mac_addr[4] = (u8)(data_lo >> 8);
+ mac_addr[3] = (u8)(data_lo >> 16);
+ mac_addr[2] = (u8)(data_lo >> 24);
+
+ mac_addr[1] = (u8)data_hi;
+ mac_addr[0] = (u8)(data_hi >> 8);
+ rc = 0;
+ }
+
+ return rc;
+}
+
+struct alu_struct {
+ u8 is_static:1;
+ u8 prio_age:3;
+ u8 is_override:1;
+ u8 is_use_fid:1;
+ u8 port_forward:5;
+ u8 fid:7;
+ u8 mac[ETH_ALEN];
+};
+
+static int ksz_r_sta_mac_table(struct ksz_device *dev, u16 addr,
+ struct alu_struct *alu)
+{
+ u64 data;
+ u32 data_hi;
+ u32 data_lo;
+
+ ksz_r_table_64(dev, TABLE_STATIC_MAC, addr, &data);
+ data_hi = data >> 32;
+ data_lo = (u32)data;
+ if (data_hi & (STATIC_MAC_TABLE_VALID | STATIC_MAC_TABLE_OVERRIDE)) {
+ alu->mac[5] = (u8)data_lo;
+ alu->mac[4] = (u8)(data_lo >> 8);
+ alu->mac[3] = (u8)(data_lo >> 16);
+ alu->mac[2] = (u8)(data_lo >> 24);
+ alu->mac[1] = (u8)data_hi;
+ alu->mac[0] = (u8)(data_hi >> 8);
+ alu->port_forward =
+ (u8)((data_hi & STATIC_MAC_TABLE_FWD_PORTS) >>
+ STATIC_MAC_FWD_PORTS_S);
+ alu->is_override =
+ (data_hi & STATIC_MAC_TABLE_OVERRIDE) ? 1 : 0;
+ data_hi >>= 1;
+ alu->is_use_fid = (data_hi & STATIC_MAC_TABLE_USE_FID) ? 1 : 0;
+ alu->fid = (u8)((data_hi & STATIC_MAC_TABLE_FID) >>
+ STATIC_MAC_FID_S);
+ return 0;
+ }
+ return -1;
+}
+
+static void ksz_w_sta_mac_table(struct ksz_device *dev, u16 addr,
+ struct alu_struct *alu)
+{
+ u64 data;
+ u32 data_hi;
+ u32 data_lo;
+
+ data_lo = ((u32)alu->mac[2] << 24) |
+ ((u32)alu->mac[3] << 16) |
+ ((u32)alu->mac[4] << 8) | alu->mac[5];
+ data_hi = ((u32)alu->mac[0] << 8) | alu->mac[1];
+ data_hi |= (u32)alu->port_forward << STATIC_MAC_FWD_PORTS_S;
+
+ if (alu->is_override)
+ data_hi |= STATIC_MAC_TABLE_OVERRIDE;
+ if (alu->is_use_fid) {
+ data_hi |= STATIC_MAC_TABLE_USE_FID;
+ data_hi |= (u32)alu->fid << STATIC_MAC_FID_S;
+ }
+ if (alu->is_static)
+ data_hi |= STATIC_MAC_TABLE_VALID;
+ else
+ data_hi &= ~STATIC_MAC_TABLE_OVERRIDE;
+
+ data = (u64)data_hi << 32 | data_lo;
+ ksz_w_table_64(dev, TABLE_STATIC_MAC, addr, data);
+}
+
+static inline void from_vlan(u16 vlan, u8 *fid, u8 *member, u8 *valid)
+{
+ *fid = (u8)(vlan & VLAN_TABLE_FID);
+ *member = (u8)(vlan & VLAN_TABLE_MEMBERSHIP) >> VLAN_TABLE_MEMBERSHIP_S;
+ *valid = !!(vlan & VLAN_TABLE_VALID);
+}
+
+static inline void to_vlan(u8 fid, u8 member, u8 valid, u16 *vlan)
+{
+ *vlan = fid;
+ *vlan |= (u16)member << VLAN_TABLE_MEMBERSHIP_S;
+ if (valid)
+ *vlan |= VLAN_TABLE_VALID;
+}
+
+static void ksz_r_vlan_entries(struct ksz_device *dev, u16 addr)
+{
+ u64 data;
+ int i;
+
+ ksz_r_table_64(dev, TABLE_VLAN, addr, &data);
+ addr *= 4;
+ for (i = 0; i < 4; i++) {
+ dev->vlan_cache[addr + i].table[0] = (u16)data;
+ data >>= VLAN_TABLE_S;
+ }
+}
+
+static void ksz_r_vlan_table(struct ksz_device *dev, u16 vid,
+ u16 *vlan)
+{
+ u64 buf;
+ u16 *data = (u16 *)&buf;
+ u16 addr;
+ int index;
+
+ addr = vid / 4;
+ index = vid & 3;
+ ksz_r_table_64(dev, TABLE_VLAN, addr, &buf);
+ *vlan = data[index];
+}
+
+static void ksz_w_vlan_table(struct ksz_device *dev, u16 vid,
+ u16 vlan)
+{
+ u64 buf;
+ u16 *data = (u16 *)&buf;
+ u16 addr;
+ int index;
+
+ addr = vid / 4;
+ index = vid & 3;
+ ksz_r_table_64(dev, TABLE_VLAN, addr, &buf);
+ data[index] = vlan;
+ dev->vlan_cache[vid].table[0] = vlan;
+ ksz_w_table_64(dev, TABLE_VLAN, addr, buf);
+}
+
+static enum dsa_tag_protocol ksz_get_tag_protocol(struct dsa_switch *ds)
+{
+ return DSA_TAG_PROTO_KSZ;
+}
+
+static void ksz_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val)
+{
+ struct ksz_port *port;
+ u8 ctrl;
+ u8 restart;
+ u8 link;
+ u8 speed;
+ u8 force;
+ u8 p = phy;
+ u16 data = 0;
+ int processed = true;
+
+ port = &dev->ports[p];
+ switch (reg) {
+ case PHY_REG_CTRL:
+ ksz_pread8(dev, p, P_LOCAL_CTRL, &ctrl);
+ ksz_pread8(dev, p, P_NEG_RESTART_CTRL, &restart);
+ ksz_pread8(dev, p, P_SPEED_STATUS, &speed);
+ ksz_pread8(dev, p, P_FORCE_CTRL, &force);
+ if (restart & PORT_PHY_LOOPBACK)
+ data |= PHY_LOOPBACK;
+ if (force & PORT_FORCE_100_MBIT)
+ data |= PHY_SPEED_100MBIT;
+ if (!(force & PORT_AUTO_NEG_DISABLE))
+ data |= PHY_AUTO_NEG_ENABLE;
+ if (restart & PORT_POWER_DOWN)
+ data |= PHY_POWER_DOWN;
+ if (restart & PORT_AUTO_NEG_RESTART)
+ data |= PHY_AUTO_NEG_RESTART;
+ if (force & PORT_FORCE_FULL_DUPLEX)
+ data |= PHY_FULL_DUPLEX;
+ if (speed & PORT_HP_MDIX)
+ data |= PHY_HP_MDIX;
+ if (restart & PORT_FORCE_MDIX)
+ data |= PHY_FORCE_MDIX;
+ if (restart & PORT_AUTO_MDIX_DISABLE)
+ data |= PHY_AUTO_MDIX_DISABLE;
+ if (restart & PORT_TX_DISABLE)
+ data |= PHY_TRANSMIT_DISABLE;
+ if (restart & PORT_LED_OFF)
+ data |= PHY_LED_DISABLE;
+ break;
+ case PHY_REG_STATUS:
+ ksz_pread8(dev, p, P_LINK_STATUS, &link);
+ ksz_pread8(dev, p, P_SPEED_STATUS, &speed);
+ data = PHY_100BTX_FD_CAPABLE |
+ PHY_100BTX_CAPABLE |
+ PHY_10BT_FD_CAPABLE |
+ PHY_10BT_CAPABLE |
+ PHY_AUTO_NEG_CAPABLE;
+ if (link & PORT_AUTO_NEG_COMPLETE)
+ data |= PHY_AUTO_NEG_ACKNOWLEDGE;
+ if (link & PORT_STAT_LINK_GOOD) {
+ data |= PHY_LINK_STATUS;
+ if (!port->link_up) {
+ port->link_up = 1;
+ dev->live_ports |= (1 << phy) & dev->on_ports;
+ }
+ } else if (port->link_up) {
+ port->link_down = 1;
+ port->link_up = 0;
+ dev->live_ports &= ~(1 << phy);
+ }
+ break;
+ case PHY_REG_ID_1:
+ data = KSZ8795_ID_HI;
+ break;
+ case PHY_REG_ID_2:
+ data = KSZ8795_ID_LO;
+ break;
+ case PHY_REG_AUTO_NEGOTIATION:
+ ksz_pread8(dev, p, P_LOCAL_CTRL, &ctrl);
+ data = PHY_AUTO_NEG_802_3;
+ if (ctrl & PORT_AUTO_NEG_SYM_PAUSE)
+ data |= PHY_AUTO_NEG_SYM_PAUSE;
+ if (ctrl & PORT_AUTO_NEG_100BTX_FD)
+ data |= PHY_AUTO_NEG_100BTX_FD;
+ if (ctrl & PORT_AUTO_NEG_100BTX)
+ data |= PHY_AUTO_NEG_100BTX;
+ if (ctrl & PORT_AUTO_NEG_10BT_FD)
+ data |= PHY_AUTO_NEG_10BT_FD;
+ if (ctrl & PORT_AUTO_NEG_10BT)
+ data |= PHY_AUTO_NEG_10BT;
+ break;
+ case PHY_REG_REMOTE_CAPABILITY:
+ ksz_pread8(dev, p, P_REMOTE_STATUS, &link);
+ data = PHY_AUTO_NEG_802_3;
+ if (link & PORT_REMOTE_SYM_PAUSE)
+ data |= PHY_AUTO_NEG_SYM_PAUSE;
+ if (link & PORT_REMOTE_100BTX_FD)
+ data |= PHY_AUTO_NEG_100BTX_FD;
+ if (link & PORT_REMOTE_100BTX)
+ data |= PHY_AUTO_NEG_100BTX;
+ if (link & PORT_REMOTE_10BT_FD)
+ data |= PHY_AUTO_NEG_10BT_FD;
+ if (link & PORT_REMOTE_10BT)
+ data |= PHY_AUTO_NEG_10BT;
+ break;
+ default:
+ processed = false;
+ break;
+ }
+ if (processed)
+ *val = data;
+}
+
+static void ksz_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val)
+{
+ u8 ctrl;
+ u8 restart;
+ u8 speed;
+ u8 data;
+ u8 p = phy;
+
+ switch (reg) {
+ case PHY_REG_CTRL:
+
+ /* Do not support PHY reset function. */
+ if (val & PHY_RESET)
+ break;
+ ksz_pread8(dev, p, P_SPEED_STATUS, &speed);
+ data = speed;
+ if (val & PHY_HP_MDIX)
+ data |= PORT_HP_MDIX;
+ else
+ data &= ~PORT_HP_MDIX;
+ if (data != speed)
+ ksz_pwrite8(dev, p, P_SPEED_STATUS, data);
+ ksz_pread8(dev, p, P_FORCE_CTRL, &ctrl);
+ data = ctrl;
+ if (!(val & PHY_AUTO_NEG_ENABLE))
+ data |= PORT_AUTO_NEG_DISABLE;
+ else
+ data &= ~PORT_AUTO_NEG_DISABLE;
+
+ /* Fiber port does not support auto-negotiation. */
+ if (dev->ports[p].fiber)
+ data |= PORT_AUTO_NEG_DISABLE;
+ if (val & PHY_SPEED_100MBIT)
+ data |= PORT_FORCE_100_MBIT;
+ else
+ data &= ~PORT_FORCE_100_MBIT;
+ if (val & PHY_FULL_DUPLEX)
+ data |= PORT_FORCE_FULL_DUPLEX;
+ else
+ data &= ~PORT_FORCE_FULL_DUPLEX;
+ if (data != ctrl)
+ ksz_pwrite8(dev, p, P_FORCE_CTRL, data);
+ ksz_pread8(dev, p, P_NEG_RESTART_CTRL, &restart);
+ data = restart;
+ if (val & PHY_LED_DISABLE)
+ data |= PORT_LED_OFF;
+ else
+ data &= ~PORT_LED_OFF;
+ if (val & PHY_TRANSMIT_DISABLE)
+ data |= PORT_TX_DISABLE;
+ else
+ data &= ~PORT_TX_DISABLE;
+ if (val & PHY_AUTO_NEG_RESTART)
+ data |= PORT_AUTO_NEG_RESTART;
+ else
+ data &= ~(PORT_AUTO_NEG_RESTART);
+ if (val & PHY_POWER_DOWN)
+ data |= PORT_POWER_DOWN;
+ else
+ data &= ~PORT_POWER_DOWN;
+ if (val & PHY_AUTO_MDIX_DISABLE)
+ data |= PORT_AUTO_MDIX_DISABLE;
+ else
+ data &= ~PORT_AUTO_MDIX_DISABLE;
+ if (val & PHY_FORCE_MDIX)
+ data |= PORT_FORCE_MDIX;
+ else
+ data &= ~PORT_FORCE_MDIX;
+ if (val & PHY_LOOPBACK)
+ data |= PORT_PHY_LOOPBACK;
+ else
+ data &= ~PORT_PHY_LOOPBACK;
+ if (data != restart)
+ ksz_pwrite8(dev, p, P_NEG_RESTART_CTRL, data);
+ break;
+ case PHY_REG_AUTO_NEGOTIATION:
+ ksz_pread8(dev, p, P_LOCAL_CTRL, &ctrl);
+ data = ctrl;
+ data &= ~(PORT_AUTO_NEG_SYM_PAUSE |
+ PORT_AUTO_NEG_100BTX_FD |
+ PORT_AUTO_NEG_100BTX |
+ PORT_AUTO_NEG_10BT_FD |
+ PORT_AUTO_NEG_10BT);
+ if (val & PHY_AUTO_NEG_SYM_PAUSE)
+ data |= PORT_AUTO_NEG_SYM_PAUSE;
+ if (val & PHY_AUTO_NEG_100BTX_FD)
+ data |= PORT_AUTO_NEG_100BTX_FD;
+ if (val & PHY_AUTO_NEG_100BTX)
+ data |= PORT_AUTO_NEG_100BTX;
+ if (val & PHY_AUTO_NEG_10BT_FD)
+ data |= PORT_AUTO_NEG_10BT_FD;
+ if (val & PHY_AUTO_NEG_10BT)
+ data |= PORT_AUTO_NEG_10BT;
+ if (data != ctrl)
+ ksz_pwrite8(dev, p, P_LOCAL_CTRL, data);
+ break;
+ default:
+ break;
+ }
+}
+
+static int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg)
+{
+ struct ksz_device *dev = ds->priv;
+ u16 val = 0xffff;
+
+ ksz_r_phy(dev, addr, reg, &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_w_phy(dev, addr, reg, val);
+
+ return 0;
+}
+
+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;
+ struct ksz_port_mib *mib;
+ struct ksz_port_mib_info *info;
+ int i;
+
+ mib = &dev->ports[port].mib;
+
+ spin_lock(&dev->mib_read_lock);
+ for (i = 0; i < TOTAL_SWITCH_COUNTER_NUM; i++) {
+ info = &mib->info[i];
+ buf[i] = info->counter;
+ info->read_cnt += info->read_max;
+ }
+ spin_unlock(&dev->mib_read_lock);
+
+ mib->ctrl = 1;
+ schedule_work(&dev->mib_read);
+}
+
+static u8 STP_MULTICAST_ADDR[] = {
+ 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00
+};
+
+static void ksz_cfg_port_member(struct ksz_device *dev, int port, u8 member)
+{
+ u8 data;
+
+ ksz_pread8(dev, port, P_MIRROR_CTRL, &data);
+ data &= ~PORT_VLAN_MEMBERSHIP;
+ data |= (member & dev->PORT_MASK);
+ ksz_pwrite8(dev, port, P_MIRROR_CTRL, data);
+ dev->ports[port].member = member;
+}
+
+static void ksz_update_port_member(struct ksz_device *dev, int port)
+{
+ struct ksz_port *p;
+ int i;
+
+ for (i = 0; i < dev->port_cnt; i++) {
+ if (i == port)
+ continue;
+ p = &dev->ports[i];
+ if (!(dev->member & (1 << i)))
+ continue;
+
+ /* Port is a member of the bridge and is forwarding. */
+ if (p->stp_state == BR_STATE_FORWARDING)
+ ksz_cfg_port_member(dev, i, dev->member);
+ }
+}
+
+static int ksz_port_bridge_join(struct dsa_switch *ds, int port,
+ struct net_device *br)
+{
+ struct ksz_device *dev = ds->priv;
+
+ dev->br_member |= (1 << port);
+
+ /**
+ * port_stp_state_set() will be called after to put the port in
+ * appropriate state so there is no need to do anything.
+ */
+
+ return 0;
+}
+
+static void ksz_port_bridge_leave(struct dsa_switch *ds, int port,
+ struct net_device *br)
+{
+ struct ksz_device *dev = ds->priv;
+
+ dev->br_member &= ~(1 << port);
+ dev->member &= ~(1 << port);
+
+ /**
+ * port_stp_state_set() will be called after to put the port in
+ * forwarding state so there is no need to do anything.
+ */
+}
+
+static void ksz_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
+{
+ struct ksz_device *dev = ds->priv;
+ struct ksz_port *p = &dev->ports[port];
+ u8 data;
+ u16 forward = dev->member;
+ int member = -1;
+
+ 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;
+ if (port < SWITCH_PORT_NUM)
+ member = 0;
+ break;
+ case BR_STATE_LISTENING:
+ data |= (PORT_RX_ENABLE | PORT_LEARN_DISABLE);
+ if (port < SWITCH_PORT_NUM &&
+ p->stp_state == BR_STATE_DISABLED)
+ member = dev->HOST_MASK | p->vid_member;
+ break;
+ case BR_STATE_LEARNING:
+ data |= PORT_RX_ENABLE;
+ break;
+ case BR_STATE_FORWARDING:
+ data |= (PORT_TX_ENABLE | PORT_RX_ENABLE);
+
+ /* This function is also used internally. */
+ if (port == dev->cpu_port)
+ break;
+
+ /* Port is a member of a bridge. */
+ if (dev->br_member & (1 << port)) {
+ dev->member |= (1 << port);
+ member = dev->member;
+ } else {
+ member = dev->HOST_MASK | p->vid_member;
+ }
+ break;
+ case BR_STATE_BLOCKING:
+ data |= PORT_LEARN_DISABLE;
+ if (port < SWITCH_PORT_NUM &&
+ p->stp_state == BR_STATE_DISABLED)
+ member = dev->HOST_MASK | p->vid_member;
+ break;
+ default:
+ dev_err(ds->dev, "invalid STP state: %d\n", state);
+ return;
+ }
+
+ ksz_pwrite8(dev, port, P_STP_CTRL, data);
+ p->stp_state = state;
+ if (data & PORT_RX_ENABLE)
+ dev->rx_ports |= (1 << port);
+ else
+ dev->rx_ports &= ~(1 << port);
+ if (data & PORT_TX_ENABLE)
+ dev->tx_ports |= (1 << port);
+ else
+ dev->tx_ports &= ~(1 << port);
+
+ /* Port membership may share register with STP state. */
+ if (member >= 0 && member != p->member)
+ ksz_cfg_port_member(dev, port, (u8)member);
+
+ /* Check if forwarding needs to be updated. */
+ if (state != BR_STATE_FORWARDING) {
+ if (dev->br_member & (1 << port))
+ dev->member &= ~(1 << port);
+ }
+
+ /* Topology is changed. */
+ if (forward != dev->member)
+ ksz_update_port_member(dev, port);
+}
+
+static void ksz_flush_dyn_mac_table(struct ksz_device *dev, int port)
+{
+ int cnt;
+ int first;
+ int index;
+ int last;
+ u8 learn[TOTAL_PORT_NUM];
+
+ if ((uint)port < TOTAL_PORT_NUM) {
+ first = port;
+ cnt = port + 1;
+ } else {
+ /* Flush all ports. */
+ first = 0;
+ cnt = dev->mib_port_cnt;
+ }
+ for (index = first; index < cnt; index++) {
+ last = chk_last_port(dev, index);
+ if (last != index)
+ continue;
+ ksz_pread8(dev, index, P_STP_CTRL, &learn[index]);
+ if (!(learn[index] & PORT_LEARN_DISABLE))
+ ksz_pwrite8(dev, index, P_STP_CTRL,
+ learn[index] | PORT_LEARN_DISABLE);
+ }
+ ksz_cfg(dev, S_FLUSH_TABLE_CTRL, SW_FLUSH_DYN_MAC_TABLE, true);
+ for (index = first; index < cnt; index++) {
+ last = chk_last_port(dev, index);
+ if (last != index)
+ continue;
+ ksz_pwrite8(dev, index, P_STP_CTRL, learn[index]);
+ }
+}
+
+static void ksz_port_fast_age(struct dsa_switch *ds, int port)
+{
+ struct ksz_device *dev = ds->priv;
+
+ ksz_flush_dyn_mac_table(dev, port);
+}
+
+static int ksz_port_vlan_filtering(struct dsa_switch *ds, int port, bool flag)
+{
+ struct ksz_device *dev = ds->priv;
+
+ ksz_cfg(dev, S_MIRROR_CTRL, SW_VLAN_ENABLE, flag);
+
+ 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;
+ bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
+ u16 data;
+ u16 vid;
+ u8 fid;
+ u8 member;
+ u8 valid;
+ u16 new_pvid = 0;
+
+ ksz_port_cfg(dev, port, P_TAG_CTRL, PORT_REMOVE_TAG, untagged);
+
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
+ ksz_r_vlan_table(dev, vid, &data);
+ from_vlan(data, &fid, &member, &valid);
+
+ /* First time to setup the VLAN entry. */
+ if (!valid) {
+ /* Need to find a way to map VID to FID. */
+ fid = 1;
+ valid = 1;
+ }
+ member |= BIT(port);
+
+ to_vlan(fid, member, valid, &data);
+ ksz_w_vlan_table(dev, vid, data);
+
+ /* change PVID */
+ if (vlan->flags & BRIDGE_VLAN_INFO_PVID)
+ new_pvid = vid;
+ }
+
+ if (new_pvid) {
+ ksz_pread16(dev, port, REG_PORT_CTRL_VID, &vid);
+ vid &= 0xfff;
+ vid |= new_pvid;
+ ksz_pwrite16(dev, port, REG_PORT_CTRL_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;
+ u16 data;
+ u16 vid;
+ u16 pvid;
+ u8 fid;
+ u8 member;
+ u8 valid;
+ u16 new_pvid = 0;
+
+ ksz_pread16(dev, port, REG_PORT_CTRL_VID, &pvid);
+ pvid = pvid & 0xFFF;
+
+ ksz_port_cfg(dev, port, P_TAG_CTRL, PORT_REMOVE_TAG, untagged);
+
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
+ ksz_r_vlan_table(dev, vid, &data);
+ from_vlan(data, &fid, &member, &valid);
+
+ member &= ~BIT(port);
+
+ /* Invalidate the entry if no more member. */
+ if (!member) {
+ fid = 0;
+ valid = 0;
+ }
+
+ if (pvid == vid)
+ new_pvid = 1;
+
+ to_vlan(fid, member, valid, &data);
+ ksz_w_vlan_table(dev, vid, data);
+ }
+
+ if (new_pvid != pvid)
+ ksz_pwrite16(dev, port, REG_PORT_CTRL_VID, pvid);
+
+ return 0;
+}
+
+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;
+ u16 i = 0;
+ u16 entries = 0;
+ u8 timestamp = 0;
+ u8 fid;
+ u8 member;
+ struct alu_struct alu;
+
+ mutex_lock(&dev->alu_mutex);
+ do {
+ alu.is_static = false;
+ ret = ksz_r_dyn_mac_table(dev, i, alu.mac, &fid, &member,
+ &timestamp, &entries);
+ if (!ret && (member & BIT(port))) {
+ ret = cb(alu.mac, alu.fid, alu.is_static, data);
+ if (ret)
+ break;
+ }
+ i++;
+ } while (i < entries);
+ mutex_unlock(&dev->alu_mutex);
+ if (i >= entries)
+ ret = 0;
+
+ 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;
+ struct alu_struct alu;
+ int index;
+ int empty = 0;
+
+ mutex_lock(&dev->alu_mutex);
+
+ for (index = 0; index < dev->num_statics; index++) {
+ if (!ksz_r_sta_mac_table(dev, index, &alu)) {
+ /* Found one already in static MAC table. */
+ if (!memcmp(alu.mac, mdb->addr, ETH_ALEN) &&
+ alu.fid == mdb->vid)
+ break;
+ /* Remember the first empty entry. */
+ } else if (!empty) {
+ empty = index + 1;
+ }
+ }
+
+ /* no available entry */
+ if (index == dev->num_statics && !empty)
+ goto exit;
+
+ /* add entry */
+ if (index == dev->num_statics) {
+ index = empty - 1;
+ memset(&alu, 0, sizeof(alu));
+ memcpy(alu.mac, mdb->addr, ETH_ALEN);
+ alu.is_static = true;
+ }
+ alu.port_forward |= BIT(port);
+ if (mdb->vid) {
+ alu.is_use_fid = true;
+
+ /* Need a way to map VID to FID. */
+ alu.fid = mdb->vid;
+ }
+ ksz_w_sta_mac_table(dev, index, &alu);
+
+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;
+ struct alu_struct alu;
+ int index;
+ int ret = 0;
+
+ mutex_lock(&dev->alu_mutex);
+
+ for (index = 0; index < dev->num_statics; index++) {
+ if (!ksz_r_sta_mac_table(dev, index, &alu)) {
+ /* Found one already in static MAC table. */
+ if (!memcmp(alu.mac, mdb->addr, ETH_ALEN) &&
+ alu.fid == mdb->vid)
+ break;
+ }
+ }
+
+ /* no available entry */
+ if (index == dev->num_statics) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ /* clear port */
+ alu.port_forward &= ~BIT(port);
+ if (!alu.port_forward)
+ alu.is_static = false;
+ ksz_w_sta_mac_table(dev, index, &alu);
+
+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);
+ dev->mirror_rx |= (1 << port);
+ } else {
+ ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, true);
+ dev->mirror_tx |= (1 << port);
+ }
+
+ ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_SNIFFER, false);
+
+ /* configure mirror port */
+ if (dev->mirror_rx || dev->mirror_tx)
+ ksz_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL,
+ PORT_MIRROR_SNIFFER, true);
+
+ 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);
+ dev->mirror_rx &= ~(1 << port);
+ } else {
+ ksz_port_cfg(dev, port, P_MIRROR_CTRL, PORT_MIRROR_TX, false);
+ dev->mirror_tx &= ~(1 << port);
+ }
+
+ ksz_pread8(dev, port, P_MIRROR_CTRL, &data);
+
+ if (!dev->mirror_rx && !dev->mirror_tx)
+ ksz_port_cfg(dev, mirror->to_local_port, P_MIRROR_CTRL,
+ PORT_MIRROR_SNIFFER, false);
+}
+
+static u8 ksz_advertised_flow_ctrl(u8 flow_ctrl, u8 ctrl)
+{
+ ctrl &= ~PORT_AUTO_NEG_SYM_PAUSE;
+ switch (flow_ctrl) {
+ case PHY_FLOW_CTRL:
+ ctrl |= PORT_AUTO_NEG_SYM_PAUSE;
+ break;
+
+ /* Not supported. */
+ case PHY_TX_ONLY:
+ case PHY_RX_ONLY:
+ default:
+ break;
+ }
+ return ctrl;
+}
+
+static u8 ksz_determine_flow_ctrl(u8 local, u8 remote, int force)
+{
+ int rx;
+ int tx;
+ u8 flow = 0;
+
+ rx = 0;
+ tx = 0;
+ if (force) {
+ rx = 1;
+ tx = 1;
+ }
+ if (remote & PORT_REMOTE_SYM_PAUSE) {
+ if (local & PORT_AUTO_NEG_SYM_PAUSE) {
+ rx = 1;
+ tx = 1;
+ }
+ }
+ if (rx)
+ flow |= 0x01;
+ if (tx)
+ flow |= 0x02;
+ return flow;
+}
+
+static void port_get_link_speed(struct ksz_device *dev, int port)
+{
+ struct ksz_port *p = &dev->ports[port];
+ u8 data;
+ u8 link;
+ u8 local;
+ u8 remote;
+ u8 status;
+
+ ksz_pread8(dev, port, P_LOCAL_CTRL, &local);
+ ksz_pread8(dev, port, P_REMOTE_STATUS, &remote);
+ ksz_pread8(dev, port, P_SPEED_STATUS, &status);
+ ksz_pread8(dev, port, P_LINK_STATUS, &data);
+
+ /**
+ * The partner capability register is updated but the
+ * auto-negotiation is not completed yet.
+ */
+ link = data & (PORT_AUTO_NEG_COMPLETE | PORT_STAT_LINK_GOOD);
+ link |= status & (PORT_STAT_SPEED_100MBIT | PORT_STAT_FULL_DUPLEX);
+
+ if (local == p->advertised && link == p->link)
+ return;
+
+ if (data & PORT_STAT_LINK_GOOD) {
+ p->speed = SPEED_10;
+ if (status & PORT_STAT_SPEED_100MBIT)
+ p->speed = SPEED_100;
+ p->duplex = 1;
+ if (status & PORT_STAT_FULL_DUPLEX)
+ p->duplex = 2;
+ ksz_port_cfg(dev, port, P_STP_CTRL, PORT_BACK_PRESSURE,
+ p->duplex == 1);
+ p->flow_ctrl = ksz_determine_flow_ctrl(local, remote,
+ p->force);
+ if (status & PORT_RX_FLOW_CTRL)
+ p->flow_ctrl |= 0x10;
+ if (status & PORT_TX_FLOW_CTRL)
+ p->flow_ctrl |= 0x20;
+ p->link_up = 1;
+ dev->live_ports |= (1 << port) & dev->on_ports;
+ } else if (p->link_up) {
+ p->link_up = 0;
+ p->link_down = 1;
+ dev->live_ports &= ~(1 << port);
+ }
+ p->advertised = local;
+ p->partner = remote;
+ p->link = link;
+}
+
+static void port_set_link_speed(struct ksz_device *dev, int port, int speed,
+ int duplex)
+{
+ struct ksz_port *p = &dev->ports[port];
+ u8 adv;
+ u8 cfg;
+ u8 data;
+ u8 local;
+ u8 status;
+
+ if (p->fiber)
+ return;
+
+ ksz_pread8(dev, port, P_LOCAL_CTRL, &local);
+ ksz_pread8(dev, port, P_LINK_STATUS, &status);
+ ksz_pread8(dev, port, P_FORCE_CTRL, &data);
+
+ adv = 0;
+ cfg = 0;
+ if (status & PORT_STAT_LINK_GOOD) {
+ cfg = data;
+ adv = local;
+ }
+
+ data &= ~PORT_AUTO_NEG_DISABLE;
+ local = ksz_advertised_flow_ctrl(PHY_FLOW_CTRL, local);
+
+ local |= PORT_AUTO_NEG_100BTX_FD | PORT_AUTO_NEG_100BTX |
+ PORT_AUTO_NEG_10BT_FD | PORT_AUTO_NEG_10BT;
+
+ if (speed || duplex) {
+ if (speed == SPEED_10)
+ local &= ~(PORT_AUTO_NEG_100BTX_FD |
+ PORT_AUTO_NEG_100BTX);
+ else if (speed == SPEED_100)
+ local &= ~(PORT_AUTO_NEG_10BT_FD |
+ PORT_AUTO_NEG_10BT);
+ if (duplex == 1)
+ local &= ~(PORT_AUTO_NEG_100BTX_FD |
+ PORT_AUTO_NEG_10BT_FD);
+ else if (duplex == 2)
+ local &= ~(PORT_AUTO_NEG_100BTX |
+ PORT_AUTO_NEG_10BT);
+ }
+ if (data != cfg || local != adv) {
+ ksz_pwrite8(dev, port, P_FORCE_CTRL, data);
+ ksz_pwrite8(dev, port, P_LOCAL_CTRL, local);
+ ksz_pread8(dev, port, P_NEG_RESTART_CTRL, &data);
+ data |= PORT_AUTO_NEG_RESTART;
+ ksz_pwrite8(dev, port, P_NEG_RESTART_CTRL, data);
+
+ /* Link is going down. */
+ if (p->link_up)
+ p->link_down = 1;
+ p->link_up = 0;
+ }
+ p->force = 0;
+}
+
+static void port_force_link_speed(struct ksz_device *dev, int port, int speed,
+ int duplex)
+{
+ struct ksz_port *p = &dev->ports[port];
+ u8 data;
+
+ ksz_pread8(dev, port, P_FORCE_CTRL, &data);
+ data |= PORT_AUTO_NEG_DISABLE;
+ if (speed == SPEED_10)
+ data &= ~PORT_FORCE_100_MBIT;
+ else
+ data |= PORT_FORCE_100_MBIT;
+ if (duplex == 1)
+ data &= ~PORT_FORCE_FULL_DUPLEX;
+ else
+ data |= PORT_FORCE_FULL_DUPLEX;
+ ksz_pwrite8(dev, port, P_FORCE_CTRL, data);
+ p->force = 1;
+}
+
+static void ksz_mib_read_work(struct work_struct *work)
+{
+ struct ksz_device *dev =
+ container_of(work, struct ksz_device, mib_read);
+ struct ksz_port *p;
+ struct ksz_port_mib *mib;
+ struct ksz_port_mib_info *info;
+ int i;
+ unsigned long next_jiffies;
+
+ /**
+ * Want to read MIB counters from all ports every second and spread
+ * the register reading around so that this very low priority
+ * operation does not affect critical register access like PTP or
+ * interrupt. In fact the MIB counter reading may stop when an
+ * interrupt is triggered.
+ */
+ next_jiffies = jiffies + dev->MIB_READ_INTERVAL * dev->mib_port_cnt;
+ for (i = 0; i < dev->mib_port_cnt; i++) {
+ p = &dev->ports[i];
+ mib = &p->mib;
+ if (mib->cnt_ptr || 1 == mib->ctrl) {
+ if (port_r_cnt(dev, i))
+ break;
+ mib->ctrl = 0;
+
+ if (mib->cnt_ptr == 0)
+ mib->ctrl = 2;
+ } else if (time_is_before_eq_jiffies(mib->time) &&
+ (dev->live_ports & (1 << i))) {
+ mib->ctrl = 1;
+ mib->time = next_jiffies;
+ next_jiffies += dev->MIB_READ_INTERVAL;
+ } else if (p->link_down) {
+ int j;
+
+ spin_lock(&dev->mib_read_lock);
+ for (j = 0; j < TOTAL_SWITCH_COUNTER_NUM; j++) {
+ info = &mib->info[j];
+ info->read_cnt += info->read_max;
+ }
+ spin_unlock(&dev->mib_read_lock);
+ p->link_down = 0;
+
+ /* Read counters one last time after link is lost. */
+ mib->ctrl = 1;
+ }
+ }
+ do {
+ u8 intr_status;
+
+ ksz_read8(dev, REG_INT_STATUS, &intr_status);
+ intr_status &= ~INT_PME;
+ if (!intr_status)
+ break;
+ ksz_write8(dev, REG_INT_STATUS, intr_status);
+ for (i = 0; i < dev->port_cnt; i++)
+ port_get_link_speed(dev, i);
+ } while (0);
+}
+
+static void mib_monitor(unsigned long ptr)
+{
+ struct ksz_device *dev = (struct ksz_device *)ptr;
+
+ mod_timer(&dev->mib_read_timer, jiffies + dev->MIB_READ_INTERVAL);
+ schedule_work(&dev->mib_read);
+}
+
+static void port_setup(struct ksz_device *dev, int port, bool cpu_port)
+{
+ u8 data8;
+ u8 member;
+ struct ksz_port *p = &dev->ports[port];
+
+ /* enable broadcast storm limit */
+ ksz_port_cfg(dev, port, P_BCAST_STORM_CTRL, PORT_BROADCAST_STORM, true);
+
+ port_set_prio_queue(dev, port, 4);
+
+ /* disable DiffServ priority */
+ ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_DIFFSERV_ENABLE, false);
+
+ /* replace priority */
+ ksz_port_cfg(dev, port, P_802_1P_CTRL, PORT_802_1P_REMAPPING, false);
+
+ /* enable 802.1p priority */
+ ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_802_1P_ENABLE, true);
+
+ if (cpu_port) {
+ /* Configure MII interface for proper network communication. */
+ ksz_read8(dev, REG_PORT_5_CTRL_6, &data8);
+ data8 &= ~PORT_INTERFACE_TYPE;
+ data8 &= ~PORT_GMII_1GPS_MODE;
+ switch (dev->interface) {
+ case PHY_INTERFACE_MODE_MII:
+ break;
+ case PHY_INTERFACE_MODE_RMII:
+ data8 |= PORT_INTERFACE_RMII;
+ break;
+ case PHY_INTERFACE_MODE_GMII:
+ data8 |= PORT_GMII_1GPS_MODE;
+ data8 |= PORT_INTERFACE_GMII;
+ break;
+ default:
+ data8 &= ~PORT_RGMII_ID_IN_ENABLE;
+ data8 &= ~PORT_RGMII_ID_OUT_ENABLE;
+ if (dev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+ dev->interface == PHY_INTERFACE_MODE_RGMII_RXID)
+ data8 |= PORT_RGMII_ID_IN_ENABLE;
+ if (dev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+ dev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
+ data8 |= PORT_RGMII_ID_OUT_ENABLE;
+ data8 |= PORT_GMII_1GPS_MODE;
+ data8 |= PORT_INTERFACE_RGMII;
+ break;
+ }
+ ksz_write8(dev, REG_PORT_5_CTRL_6, data8);
+
+ member = dev->PORT_MASK;
+ dev->on_ports = dev->HOST_MASK;
+ dev->live_ports = dev->HOST_MASK;
+ } else {
+ member = dev->HOST_MASK | p->vid_member;
+ dev->on_ports |= (1 << port);
+
+ /* Link was detected before port is enabled. */
+ if (p->link_up)
+ dev->live_ports |= (1 << port);
+ }
+ ksz_cfg_port_member(dev, port, member);
+}
+
+static void ksz_config_cpu_port(struct dsa_switch *ds)
+{
+ struct ksz_device *dev = ds->priv;
+ struct ksz_port *p;
+ int i;
+ u8 remote;
+
+ ds->num_ports = dev->port_cnt + 1;
+
+ /* Switch marks the maximum frame with extra byte as oversize. */
+ ksz_cfg(dev, REG_SW_CTRL_2, SW_LEGAL_PACKET_DISABLE, true);
+ ksz_cfg(dev, S_TAIL_TAG_CTRL, SW_TAIL_TAG_ENABLE, true);
+
+ p = &dev->ports[dev->cpu_port];
+ p->vid_member = dev->PORT_MASK;
+ p->on = 1;
+
+ port_setup(dev, dev->cpu_port, true);
+ dev->member = dev->HOST_MASK;
+
+ for (i = 0; i < SWITCH_PORT_NUM; i++) {
+ p = &dev->ports[i];
+
+ /**
+ * Initialize to non-zero so that ksz_cfg_port_member() will
+ * be called.
+ */
+ p->vid_member = (1 << i);
+ p->member = dev->PORT_MASK;
+ ksz_port_stp_state_set(ds, i, BR_STATE_DISABLED);
+ if (i == dev->port_cnt)
+ break;
+ p->on = 1;
+ }
+ for (i = 0; i < dev->port_cnt; i++) {
+ p = &dev->ports[i];
+ if (!p->on)
+ continue;
+ ksz_pread8(dev, i, P_REMOTE_STATUS, &remote);
+ if (remote & PORT_FIBER_MODE)
+ p->fiber = 1;
+ port_get_link_speed(dev, i);
+ if (p->fiber) {
+ ksz_port_cfg(dev, i, P_STP_CTRL, PORT_FORCE_FLOW_CTRL,
+ true);
+ port_force_link_speed(dev, i, 100, 2);
+ } else {
+ u8 data;
+
+ ksz_port_cfg(dev, i, P_STP_CTRL, PORT_FORCE_FLOW_CTRL,
+ false);
+ ksz_pread8(dev, i, P_FORCE_CTRL, &data);
+ data &= ~PORT_FORCE_FULL_DUPLEX;
+ ksz_pwrite8(dev, i, P_FORCE_CTRL, data);
+ port_set_link_speed(dev, i, 0, 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);
+
+ /**
+ * port_stp_state_set() will be called after to enable the port so
+ * there is no need to do anything.
+ */
+
+ return 0;
+}
+
+static void ksz_disable_port(struct dsa_switch *ds, int port,
+ struct phy_device *phy)
+{
+ struct ksz_device *dev = ds->priv;
+
+ dev->on_ports &= ~(1 << port);
+ dev->live_ports &= ~(1 << port);
+
+ /**
+ * port_stp_state_set() will be called after to disable the port so
+ * there is no need to do anything.
+ */
+}
+
+static int ksz_set_addr(struct dsa_switch *ds, u8 *addr)
+{
+ struct ksz_device *dev = ds->priv;
+
+ mutex_lock(&dev->reg_mutex);
+ dev->ops->set(dev, REG_SW_MAC_ADDR_0, addr, ETH_ALEN);
+ mutex_unlock(&dev->reg_mutex);
+
+ return 0;
+}
+
+static int ksz_setup(struct dsa_switch *ds)
+{
+ u8 data8;
+ u16 data16;
+ u32 value;
+ int i;
+ struct alu_struct alu;
+ 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(dev);
+ if (ret) {
+ dev_err(ds->dev, "failed to reset switch\n");
+ return ret;
+ }
+
+ spin_lock_init(&dev->mib_read_lock);
+ INIT_WORK(&dev->mib_read, ksz_mib_read_work);
+ setup_timer(&dev->mib_read_timer, mib_monitor, (unsigned long)dev);
+
+ ksz_cfg(dev, S_REPLACE_VID_CTRL, SW_FLOW_CTRL, true);
+
+ /* Enable automatic fast aging when link changed detected. */
+ ksz_cfg(dev, S_LINK_AGING_CTRL, SW_LINK_AUTO_AGING, true);
+
+ ksz_read8(dev, REG_SW_CTRL_1, &data8);
+
+ /* Enable aggressive back off algorithm in half duplex mode. */
+ data8 |= SW_AGGR_BACKOFF;
+ ksz_write8(dev, REG_SW_CTRL_1, data8);
+
+ ksz_read8(dev, REG_SW_CTRL_2, &data8);
+
+ /* Make sure unicast VLAN boundary is set as default. */
+ data8 |= UNICAST_VLAN_BOUNDARY;
+
+ /* Enable no excessive collision drop. */
+ data8 |= NO_EXC_COLLISION_DROP;
+ ksz_write8(dev, REG_SW_CTRL_2, data8);
+
+ ksz_config_cpu_port(ds);
+
+ ksz_cfg(dev, REG_SW_CTRL_2, MULTICAST_STORM_DISABLE, true);
+
+ ksz_cfg(dev, S_REPLACE_VID_CTRL, SW_REPLACE_VID, false);
+
+ ksz_cfg(dev, S_MIRROR_CTRL, SW_MIRROR_RX_TX, false);
+
+ /* set broadcast storm protection 10% rate */
+ data8 = BROADCAST_STORM_PROT_RATE;
+ value = ((u32)BROADCAST_STORM_VALUE * data8) / 100;
+ if (value > BROADCAST_STORM_RATE)
+ value = BROADCAST_STORM_RATE;
+ ksz_read16(dev, S_REPLACE_VID_CTRL, &data16);
+ data16 &= ~BROADCAST_STORM_RATE;
+ data16 |= value;
+ ksz_write16(dev, S_REPLACE_VID_CTRL, data16);
+
+ for (i = 0; i < VLAN_TABLE_ENTRIES; i++)
+ ksz_r_vlan_entries(dev, i);
+
+ for (i = 0; i < dev->mib_port_cnt; i++)
+ port_init_cnt(dev, i);
+
+ /* Setup STP address for STP operation. */
+ memset(&alu, 0, sizeof(alu));
+ memcpy(alu.mac, STP_MULTICAST_ADDR, ETH_ALEN);
+ alu.is_static = true;
+ alu.is_override = true;
+ alu.port_forward = dev->HOST_MASK;
+
+ mutex_lock(&dev->alu_mutex);
+ ksz_w_sta_mac_table(dev, 0, &alu);
+ mutex_unlock(&dev->alu_mutex);
+
+ /* Start the timer 2 seconds later. */
+ dev->mib_read_timer.expires = jiffies + msecs_to_jiffies(2000);
+ add_timer(&dev->mib_read_timer);
+
+ return 0;
+}
+
+static const struct dsa_switch_ops ksz_switch_ops = {
+ .get_tag_protocol = ksz_get_tag_protocol,
+ .setup = ksz_setup,
+ .set_addr = ksz_set_addr,
+ .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_bridge_join = ksz_port_bridge_join,
+ .port_bridge_leave = ksz_port_bridge_leave,
+ .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_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,
+};
+
+/* Register access function can be disabled if desired. */
+#if 1
+#define KSZ_REGS_SIZE 0x100
+#endif
+
+#ifdef KSZ_REGS_SIZE
+static ssize_t ksz_registers_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t off, size_t count)
+{
+ size_t i;
+ u8 reg;
+ struct device *dev;
+ struct ksz_device *swdev;
+
+ if (unlikely(off >= KSZ_REGS_SIZE))
+ return 0;
+
+ if ((off + count) >= KSZ_REGS_SIZE)
+ count = KSZ_REGS_SIZE - off;
+
+ if (unlikely(!count))
+ return count;
+
+ dev = container_of(kobj, struct device, kobj);
+ swdev = dev_get_drvdata(dev);
+
+ reg = off;
+ mutex_lock(&swdev->reg_mutex);
+ i = swdev->ops->get(swdev, reg, buf, count);
+ mutex_unlock(&swdev->reg_mutex);
+ return i;
+}
+
+static ssize_t ksz_registers_write(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t off, size_t count)
+{
+ size_t i;
+ u8 reg;
+ struct device *dev;
+ struct ksz_device *swdev;
+
+ if (unlikely(off >= KSZ_REGS_SIZE))
+ return -EFBIG;
+
+ if ((off + count) >= KSZ_REGS_SIZE)
+ count = KSZ_REGS_SIZE - off;
+
+ if (unlikely(!count))
+ return count;
+
+ dev = container_of(kobj, struct device, kobj);
+ swdev = dev_get_drvdata(dev);
+
+ reg = off;
+ mutex_lock(&swdev->reg_mutex);
+ i = swdev->ops->set(swdev, reg, buf, count);
+ mutex_unlock(&swdev->reg_mutex);
+ return i;
+}
+
+static struct bin_attribute ksz_registers_attr = {
+ .attr = {
+ .name = "registers",
+ .mode = 00600,
+ },
+ .size = KSZ_REGS_SIZE,
+ .read = ksz_registers_read,
+ .write = ksz_registers_write,
+};
+#endif
+
+static u32 ksz_get_port_addr(int port, int offset)
+{
+ return PORT_CTRL_ADDR(port, offset);
+}
+
+/**
+ * This information needs to be communicated to the MAC driver so that it can
+ * receive the frames correctly from the switch as some MAC drivers adhere to
+ * receive exactly 1518 bytes.
+ */
+static int ksz_get_rx_len(struct ksz_device *dev)
+{
+ return 1;
+}
+
+/**
+ * This information tells how many more bytes need to be allocated to
+ * accommodate the tail tag.
+ */
+static int ksz_get_tx_len(struct ksz_device *dev)
+{
+ return 1;
+}
+
+static void ksz_add_tail_tag(struct ksz_device *dev, struct sk_buff *skb,
+ int port)
+{
+ u8 *trailer;
+ int len = 1;
+
+ port = 1 << port;
+
+ /* Need override as the port may be transmit disabled. */
+ if (!memcmp(skb->data, STP_MULTICAST_ADDR, ETH_ALEN))
+ port |= TAIL_TAG_OVERRIDE;
+ trailer = skb_put(skb, len);
+ trailer[0] = (u8)port;
+}
+
+static int ksz_get_tail_tag(struct ksz_device *dev, struct sk_buff *skb,
+ int *port)
+{
+ u8 *trailer;
+ int len = 1;
+
+ trailer = skb_tail_pointer(skb) - len;
+ *port = *trailer;
+ if (*port >= 0 && *port < SWITCH_PORT_NUM) {
+ struct ksz_port *p = &dev->ports[*port];
+
+ /**
+ * Switch is forwarding when port membership includes other
+ * ports.
+ */
+ if (p->member & ~((1 << *port) | dev->HOST_MASK))
+ skb->offload_fwd_mark = 1;
+ }
+ return len;
+}
+
+static int ksz_switch_detect(struct ksz_device *dev)
+{
+ u16 id16;
+ u8 id1;
+ u8 id2;
+ int ret;
+
+ /* read chip id */
+ ret = ksz_read16(dev, REG_CHIP_ID0, &id16);
+ if (ret)
+ return ret;
+
+ id1 = id16 >> 8;
+ id2 = id16 & SW_CHIP_ID_M;
+ if (id1 != FAMILY_ID ||
+ (id2 != CHIP_ID_94 && id2 != CHIP_ID_95))
+ return -ENODEV;
+
+ dev->mib_port_cnt = TOTAL_PORT_NUM;
+ dev->port_cnt = SWITCH_PORT_NUM;
+
+ if (id2 == CHIP_ID_95) {
+ u8 val;
+
+ id2 = 0x95;
+ ksz_read8(dev, REG_PORT_1_STATUS_0, &val);
+ if (val & PORT_FIBER_MODE)
+ id2 = 0x65;
+ } else if (id2 == CHIP_ID_94) {
+ dev->port_cnt--;
+ dev->last_port = dev->port_cnt;
+ dev->features |= USE_FEWER_PORTS;
+ id2 = 0x94;
+ }
+ id16 &= ~0xff;
+ id16 |= id2;
+ dev->chip_id = id16;
+
+ dev->cpu_port = dev->mib_port_cnt - 1;
+ dev->HOST_MASK = (1 << dev->cpu_port);
+
+ dev->mib_cnt = TOTAL_SWITCH_COUNTER_NUM;
+
+ /* Try to read MIB counters in all ports every second. */
+ dev->MIB_READ_INTERVAL = msecs_to_jiffies(1000 / dev->mib_port_cnt);
+
+ return 0;
+}
+
+struct ksz_chip_data {
+ u16 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 = 0x8795,
+ .dev_name = "KSZ8795",
+ .num_vlans = 4096,
+ .num_alus = 0,
+ .num_statics = 8,
+ .cpu_ports = 0x10, /* can be configured as cpu port */
+ .port_cnt = 4, /* total physical port count */
+ },
+ {
+ .chip_id = 0x8765,
+ .dev_name = "KSZ8765",
+ .num_vlans = 4096,
+ .num_alus = 0,
+ .num_statics = 8,
+ .cpu_ports = 0x10, /* can be configured as cpu port */
+ .port_cnt = 4, /* 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;
+
+ dev->PORT_MASK = (1 << dev->port_cnt) - 1;
+ dev->PORT_MASK |= dev->HOST_MASK;
+
+ i = dev->mib_port_cnt;
+ dev->ports = devm_kzalloc(dev->dev, sizeof(struct ksz_port) * i,
+ GFP_KERNEL);
+ if (!dev->ports)
+ return -ENOMEM;
+ for (i = 0; i < dev->mib_port_cnt; i++) {
+ dev->ports[i].mib.info =
+ devm_kzalloc(dev->dev,
+ sizeof(struct ksz_port_mib_info) *
+ TOTAL_SWITCH_COUNTER_NUM, GFP_KERNEL);
+ if (!dev->ports[i].mib.info)
+ return -ENOMEM;
+ }
+
+#ifdef KSZ_REGS_SIZE
+ i = sysfs_create_bin_file(&dev->dev->kobj,
+ &ksz_registers_attr);
+#endif
+
+ return 0;
+}
+
+static void ksz_switch_exit(struct ksz_device *dev)
+{
+ if (dev->mib_read_timer.expires)
+ del_timer_sync(&dev->mib_read_timer);
+
+#ifdef KSZ_REGS_SIZE
+ sysfs_remove_bin_file(&dev->dev->kobj, &ksz_registers_attr);
+#endif
+}
+
+static const struct ksz_dev_ops ksz8795_dev_ops = {
+ .get_port_addr = ksz_get_port_addr,
+ .reset = ksz_reset_switch,
+ .get_rx_len = ksz_get_rx_len,
+ .get_tx_len = ksz_get_tx_len,
+ .add_tail_tag = ksz_add_tail_tag,
+ .get_tail_tag = ksz_get_tail_tag,
+ .detect = ksz_switch_detect,
+ .init = ksz_switch_init,
+ .exit = ksz_switch_exit,
+};
+
+int ksz8795_switch_register(struct ksz_device *dev)
+{
+ return ksz_switch_register(dev, &ksz8795_dev_ops);
+}
+EXPORT_SYMBOL(ksz8795_switch_register);
+
+MODULE_AUTHOR("Tristram Ha <Tristram.Ha@microchip.com>");
+MODULE_DESCRIPTION("Microchip KSZ8795 Series Switch DSA Driver");
+MODULE_LICENSE("GPL");
\
 
 \ /
  Last update: 2017-09-07 23:17    [W:0.207 / U:41.936 seconds]
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