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path: root/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
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Diffstat (limited to 'target/linux/generic/files/drivers/net/phy/rtl8366_smi.c')
-rw-r--r--target/linux/generic/files/drivers/net/phy/rtl8366_smi.c1449
1 files changed, 1449 insertions, 0 deletions
diff --git a/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c b/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
new file mode 100644
index 0000000..699234d
--- /dev/null
+++ b/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
@@ -0,0 +1,1449 @@
+/*
+ * Realtek RTL8366 SMI interface driver
+ *
+ * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/spinlock.h>
+#include <linux/skbuff.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
+#include <linux/rtl8366.h>
+
+#ifdef CONFIG_RTL8366_SMI_DEBUG_FS
+#include <linux/debugfs.h>
+#endif
+
+#include "rtl8366_smi.h"
+
+#define RTL8366_SMI_ACK_RETRY_COUNT 5
+
+#define RTL8366_SMI_HW_STOP_DELAY 25 /* msecs */
+#define RTL8366_SMI_HW_START_DELAY 100 /* msecs */
+
+static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
+{
+ ndelay(smi->clk_delay);
+}
+
+static void rtl8366_smi_start(struct rtl8366_smi *smi)
+{
+ unsigned int sda = smi->gpio_sda;
+ unsigned int sck = smi->gpio_sck;
+
+ /*
+ * Set GPIO pins to output mode, with initial state:
+ * SCK = 0, SDA = 1
+ */
+ gpio_direction_output(sck, 0);
+ gpio_direction_output(sda, 1);
+ rtl8366_smi_clk_delay(smi);
+
+ /* CLK 1: 0 -> 1, 1 -> 0 */
+ gpio_set_value(sck, 1);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sck, 0);
+ rtl8366_smi_clk_delay(smi);
+
+ /* CLK 2: */
+ gpio_set_value(sck, 1);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sda, 0);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sck, 0);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sda, 1);
+}
+
+static void rtl8366_smi_stop(struct rtl8366_smi *smi)
+{
+ unsigned int sda = smi->gpio_sda;
+ unsigned int sck = smi->gpio_sck;
+
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sda, 0);
+ gpio_set_value(sck, 1);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sda, 1);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sck, 1);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sck, 0);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sck, 1);
+
+ /* add a click */
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sck, 0);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sck, 1);
+
+ /* set GPIO pins to input mode */
+ gpio_direction_input(sda);
+ gpio_direction_input(sck);
+}
+
+static void rtl8366_smi_write_bits(struct rtl8366_smi *smi, u32 data, u32 len)
+{
+ unsigned int sda = smi->gpio_sda;
+ unsigned int sck = smi->gpio_sck;
+
+ for (; len > 0; len--) {
+ rtl8366_smi_clk_delay(smi);
+
+ /* prepare data */
+ gpio_set_value(sda, !!(data & ( 1 << (len - 1))));
+ rtl8366_smi_clk_delay(smi);
+
+ /* clocking */
+ gpio_set_value(sck, 1);
+ rtl8366_smi_clk_delay(smi);
+ gpio_set_value(sck, 0);
+ }
+}
+
+static void rtl8366_smi_read_bits(struct rtl8366_smi *smi, u32 len, u32 *data)
+{
+ unsigned int sda = smi->gpio_sda;
+ unsigned int sck = smi->gpio_sck;
+
+ gpio_direction_input(sda);
+
+ for (*data = 0; len > 0; len--) {
+ u32 u;
+
+ rtl8366_smi_clk_delay(smi);
+
+ /* clocking */
+ gpio_set_value(sck, 1);
+ rtl8366_smi_clk_delay(smi);
+ u = !!gpio_get_value(sda);
+ gpio_set_value(sck, 0);
+
+ *data |= (u << (len - 1));
+ }
+
+ gpio_direction_output(sda, 0);
+}
+
+static int rtl8366_smi_wait_for_ack(struct rtl8366_smi *smi)
+{
+ int retry_cnt;
+
+ retry_cnt = 0;
+ do {
+ u32 ack;
+
+ rtl8366_smi_read_bits(smi, 1, &ack);
+ if (ack == 0)
+ break;
+
+ if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT) {
+ dev_err(smi->parent, "ACK timeout\n");
+ return -ETIMEDOUT;
+ }
+ } while (1);
+
+ return 0;
+}
+
+static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
+{
+ rtl8366_smi_write_bits(smi, data, 8);
+ return rtl8366_smi_wait_for_ack(smi);
+}
+
+static int rtl8366_smi_write_byte_noack(struct rtl8366_smi *smi, u8 data)
+{
+ rtl8366_smi_write_bits(smi, data, 8);
+ return 0;
+}
+
+static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
+{
+ u32 t;
+
+ /* read data */
+ rtl8366_smi_read_bits(smi, 8, &t);
+ *data = (t & 0xff);
+
+ /* send an ACK */
+ rtl8366_smi_write_bits(smi, 0x00, 1);
+
+ return 0;
+}
+
+static int rtl8366_smi_read_byte1(struct rtl8366_smi *smi, u8 *data)
+{
+ u32 t;
+
+ /* read data */
+ rtl8366_smi_read_bits(smi, 8, &t);
+ *data = (t & 0xff);
+
+ /* send an ACK */
+ rtl8366_smi_write_bits(smi, 0x01, 1);
+
+ return 0;
+}
+
+int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
+{
+ unsigned long flags;
+ u8 lo = 0;
+ u8 hi = 0;
+ int ret;
+
+ spin_lock_irqsave(&smi->lock, flags);
+
+ rtl8366_smi_start(smi);
+
+ /* send READ command */
+ ret = rtl8366_smi_write_byte(smi, smi->cmd_read);
+ if (ret)
+ goto out;
+
+ /* set ADDR[7:0] */
+ ret = rtl8366_smi_write_byte(smi, addr & 0xff);
+ if (ret)
+ goto out;
+
+ /* set ADDR[15:8] */
+ ret = rtl8366_smi_write_byte(smi, addr >> 8);
+ if (ret)
+ goto out;
+
+ /* read DATA[7:0] */
+ rtl8366_smi_read_byte0(smi, &lo);
+ /* read DATA[15:8] */
+ rtl8366_smi_read_byte1(smi, &hi);
+
+ *data = ((u32) lo) | (((u32) hi) << 8);
+
+ ret = 0;
+
+ out:
+ rtl8366_smi_stop(smi);
+ spin_unlock_irqrestore(&smi->lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
+
+static int __rtl8366_smi_write_reg(struct rtl8366_smi *smi,
+ u32 addr, u32 data, bool ack)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&smi->lock, flags);
+
+ rtl8366_smi_start(smi);
+
+ /* send WRITE command */
+ ret = rtl8366_smi_write_byte(smi, smi->cmd_write);
+ if (ret)
+ goto out;
+
+ /* set ADDR[7:0] */
+ ret = rtl8366_smi_write_byte(smi, addr & 0xff);
+ if (ret)
+ goto out;
+
+ /* set ADDR[15:8] */
+ ret = rtl8366_smi_write_byte(smi, addr >> 8);
+ if (ret)
+ goto out;
+
+ /* write DATA[7:0] */
+ ret = rtl8366_smi_write_byte(smi, data & 0xff);
+ if (ret)
+ goto out;
+
+ /* write DATA[15:8] */
+ if (ack)
+ ret = rtl8366_smi_write_byte(smi, data >> 8);
+ else
+ ret = rtl8366_smi_write_byte_noack(smi, data >> 8);
+ if (ret)
+ goto out;
+
+ ret = 0;
+
+ out:
+ rtl8366_smi_stop(smi);
+ spin_unlock_irqrestore(&smi->lock, flags);
+
+ return ret;
+}
+
+int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
+{
+ return __rtl8366_smi_write_reg(smi, addr, data, true);
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
+
+int rtl8366_smi_write_reg_noack(struct rtl8366_smi *smi, u32 addr, u32 data)
+{
+ return __rtl8366_smi_write_reg(smi, addr, data, false);
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg_noack);
+
+int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
+{
+ u32 t;
+ int err;
+
+ err = rtl8366_smi_read_reg(smi, addr, &t);
+ if (err)
+ return err;
+
+ err = rtl8366_smi_write_reg(smi, addr, (t & ~mask) | data);
+ return err;
+
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
+
+static int rtl8366_reset(struct rtl8366_smi *smi)
+{
+ if (smi->hw_reset) {
+ smi->hw_reset(true);
+ msleep(RTL8366_SMI_HW_STOP_DELAY);
+ smi->hw_reset(false);
+ msleep(RTL8366_SMI_HW_START_DELAY);
+ return 0;
+ }
+
+ return smi->ops->reset_chip(smi);
+}
+
+static int rtl8366_mc_is_used(struct rtl8366_smi *smi, int mc_index, int *used)
+{
+ int err;
+ int i;
+
+ *used = 0;
+ for (i = 0; i < smi->num_ports; i++) {
+ int index = 0;
+
+ err = smi->ops->get_mc_index(smi, i, &index);
+ if (err)
+ return err;
+
+ if (mc_index == index) {
+ *used = 1;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int rtl8366_set_vlan(struct rtl8366_smi *smi, int vid, u32 member,
+ u32 untag, u32 fid)
+{
+ struct rtl8366_vlan_4k vlan4k;
+ int err;
+ int i;
+
+ /* Update the 4K table */
+ err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
+ if (err)
+ return err;
+
+ vlan4k.member = member;
+ vlan4k.untag = untag;
+ vlan4k.fid = fid;
+ err = smi->ops->set_vlan_4k(smi, &vlan4k);
+ if (err)
+ return err;
+
+ /* Try to find an existing MC entry for this VID */
+ for (i = 0; i < smi->num_vlan_mc; i++) {
+ struct rtl8366_vlan_mc vlanmc;
+
+ err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
+ if (err)
+ return err;
+
+ if (vid == vlanmc.vid) {
+ /* update the MC entry */
+ vlanmc.member = member;
+ vlanmc.untag = untag;
+ vlanmc.fid = fid;
+
+ err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
+ break;
+ }
+ }
+
+ return err;
+}
+
+static int rtl8366_get_pvid(struct rtl8366_smi *smi, int port, int *val)
+{
+ struct rtl8366_vlan_mc vlanmc;
+ int err;
+ int index;
+
+ err = smi->ops->get_mc_index(smi, port, &index);
+ if (err)
+ return err;
+
+ err = smi->ops->get_vlan_mc(smi, index, &vlanmc);
+ if (err)
+ return err;
+
+ *val = vlanmc.vid;
+ return 0;
+}
+
+static int rtl8366_set_pvid(struct rtl8366_smi *smi, unsigned port,
+ unsigned vid)
+{
+ struct rtl8366_vlan_mc vlanmc;
+ struct rtl8366_vlan_4k vlan4k;
+ int err;
+ int i;
+
+ /* Try to find an existing MC entry for this VID */
+ for (i = 0; i < smi->num_vlan_mc; i++) {
+ err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
+ if (err)
+ return err;
+
+ if (vid == vlanmc.vid) {
+ err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
+ if (err)
+ return err;
+
+ err = smi->ops->set_mc_index(smi, port, i);
+ return err;
+ }
+ }
+
+ /* We have no MC entry for this VID, try to find an empty one */
+ for (i = 0; i < smi->num_vlan_mc; i++) {
+ err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
+ if (err)
+ return err;
+
+ if (vlanmc.vid == 0 && vlanmc.member == 0) {
+ /* Update the entry from the 4K table */
+ err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
+ if (err)
+ return err;
+
+ vlanmc.vid = vid;
+ vlanmc.member = vlan4k.member;
+ vlanmc.untag = vlan4k.untag;
+ vlanmc.fid = vlan4k.fid;
+ err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
+ if (err)
+ return err;
+
+ err = smi->ops->set_mc_index(smi, port, i);
+ return err;
+ }
+ }
+
+ /* MC table is full, try to find an unused entry and replace it */
+ for (i = 0; i < smi->num_vlan_mc; i++) {
+ int used;
+
+ err = rtl8366_mc_is_used(smi, i, &used);
+ if (err)
+ return err;
+
+ if (!used) {
+ /* Update the entry from the 4K table */
+ err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
+ if (err)
+ return err;
+
+ vlanmc.vid = vid;
+ vlanmc.member = vlan4k.member;
+ vlanmc.untag = vlan4k.untag;
+ vlanmc.fid = vlan4k.fid;
+ err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
+ if (err)
+ return err;
+
+ err = smi->ops->set_mc_index(smi, port, i);
+ return err;
+ }
+ }
+
+ dev_err(smi->parent,
+ "all VLAN member configurations are in use\n");
+
+ return -ENOSPC;
+}
+
+int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
+{
+ int err;
+
+ err = smi->ops->enable_vlan(smi, enable);
+ if (err)
+ return err;
+
+ smi->vlan_enabled = enable;
+
+ if (!enable) {
+ smi->vlan4k_enabled = 0;
+ err = smi->ops->enable_vlan4k(smi, enable);
+ }
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtl8366_enable_vlan);
+
+static int rtl8366_enable_vlan4k(struct rtl8366_smi *smi, int enable)
+{
+ int err;
+
+ if (enable) {
+ err = smi->ops->enable_vlan(smi, enable);
+ if (err)
+ return err;
+
+ smi->vlan_enabled = enable;
+ }
+
+ err = smi->ops->enable_vlan4k(smi, enable);
+ if (err)
+ return err;
+
+ smi->vlan4k_enabled = enable;
+ return 0;
+}
+
+int rtl8366_enable_all_ports(struct rtl8366_smi *smi, int enable)
+{
+ int port;
+ int err;
+
+ for (port = 0; port < smi->num_ports; port++) {
+ err = smi->ops->enable_port(smi, port, enable);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_enable_all_ports);
+
+int rtl8366_reset_vlan(struct rtl8366_smi *smi)
+{
+ struct rtl8366_vlan_mc vlanmc;
+ int err;
+ int i;
+
+ rtl8366_enable_vlan(smi, 0);
+ rtl8366_enable_vlan4k(smi, 0);
+
+ /* clear VLAN member configurations */
+ vlanmc.vid = 0;
+ vlanmc.priority = 0;
+ vlanmc.member = 0;
+ vlanmc.untag = 0;
+ vlanmc.fid = 0;
+ for (i = 0; i < smi->num_vlan_mc; i++) {
+ err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
+
+static int rtl8366_init_vlan(struct rtl8366_smi *smi)
+{
+ int port;
+ int err;
+
+ err = rtl8366_reset_vlan(smi);
+ if (err)
+ return err;
+
+ for (port = 0; port < smi->num_ports; port++) {
+ u32 mask;
+
+ if (port == smi->cpu_port)
+ mask = (1 << smi->num_ports) - 1;
+ else
+ mask = (1 << port) | (1 << smi->cpu_port);
+
+ err = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0);
+ if (err)
+ return err;
+
+ err = rtl8366_set_pvid(smi, port, (port + 1));
+ if (err)
+ return err;
+ }
+
+ return rtl8366_enable_vlan(smi, 1);
+}
+
+#ifdef CONFIG_RTL8366_SMI_DEBUG_FS
+int rtl8366_debugfs_open(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_debugfs_open);
+
+static ssize_t rtl8366_read_debugfs_vlan_mc(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
+ int i, len = 0;
+ char *buf = smi->buf;
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%2s %6s %4s %6s %6s %3s\n",
+ "id", "vid","prio", "member", "untag", "fid");
+
+ for (i = 0; i < smi->num_vlan_mc; ++i) {
+ struct rtl8366_vlan_mc vlanmc;
+
+ smi->ops->get_vlan_mc(smi, i, &vlanmc);
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%2d %6d %4d 0x%04x 0x%04x %3d\n",
+ i, vlanmc.vid, vlanmc.priority,
+ vlanmc.member, vlanmc.untag, vlanmc.fid);
+ }
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+#define RTL8366_VLAN4K_PAGE_SIZE 64
+#define RTL8366_VLAN4K_NUM_PAGES (4096 / RTL8366_VLAN4K_PAGE_SIZE)
+
+static ssize_t rtl8366_read_debugfs_vlan_4k(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
+ int i, len = 0;
+ int offset;
+ char *buf = smi->buf;
+
+ if (smi->dbg_vlan_4k_page >= RTL8366_VLAN4K_NUM_PAGES) {
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "invalid page: %u\n", smi->dbg_vlan_4k_page);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+ }
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%4s %6s %6s %3s\n",
+ "vid", "member", "untag", "fid");
+
+ offset = RTL8366_VLAN4K_PAGE_SIZE * smi->dbg_vlan_4k_page;
+ for (i = 0; i < RTL8366_VLAN4K_PAGE_SIZE; i++) {
+ struct rtl8366_vlan_4k vlan4k;
+
+ smi->ops->get_vlan_4k(smi, offset + i, &vlan4k);
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%4d 0x%04x 0x%04x %3d\n",
+ vlan4k.vid, vlan4k.member,
+ vlan4k.untag, vlan4k.fid);
+ }
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t rtl8366_read_debugfs_pvid(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
+ char *buf = smi->buf;
+ int len = 0;
+ int i;
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len, "%4s %4s\n",
+ "port", "pvid");
+
+ for (i = 0; i < smi->num_ports; i++) {
+ int pvid;
+ int err;
+
+ err = rtl8366_get_pvid(smi, i, &pvid);
+ if (err)
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%4d error\n", i);
+ else
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%4d %4d\n", i, pvid);
+ }
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t rtl8366_read_debugfs_reg(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
+ u32 t, reg = smi->dbg_reg;
+ int err, len = 0;
+ char *buf = smi->buf;
+
+ memset(buf, '\0', sizeof(smi->buf));
+
+ err = rtl8366_smi_read_reg(smi, reg, &t);
+ if (err) {
+ len += snprintf(buf, sizeof(smi->buf),
+ "Read failed (reg: 0x%04x)\n", reg);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+ }
+
+ len += snprintf(buf, sizeof(smi->buf), "reg = 0x%04x, val = 0x%04x\n",
+ reg, t);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t rtl8366_write_debugfs_reg(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
+ unsigned long data;
+ u32 reg = smi->dbg_reg;
+ int err;
+ size_t len;
+ char *buf = smi->buf;
+
+ len = min(count, sizeof(smi->buf) - 1);
+ if (copy_from_user(buf, user_buf, len)) {
+ dev_err(smi->parent, "copy from user failed\n");
+ return -EFAULT;
+ }
+
+ buf[len] = '\0';
+ if (len > 0 && buf[len - 1] == '\n')
+ buf[len - 1] = '\0';
+
+
+ if (kstrtoul(buf, 16, &data)) {
+ dev_err(smi->parent, "Invalid reg value %s\n", buf);
+ } else {
+ err = rtl8366_smi_write_reg(smi, reg, data);
+ if (err) {
+ dev_err(smi->parent,
+ "writing reg 0x%04x val 0x%04lx failed\n",
+ reg, data);
+ }
+ }
+
+ return count;
+}
+
+static ssize_t rtl8366_read_debugfs_mibs(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct rtl8366_smi *smi = file->private_data;
+ int i, j, len = 0;
+ char *buf = smi->buf;
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s",
+ "Counter");
+
+ for (i = 0; i < smi->num_ports; i++) {
+ char port_buf[10];
+
+ snprintf(port_buf, sizeof(port_buf), "Port %d", i);
+ len += snprintf(buf + len, sizeof(smi->buf) - len, " %12s",
+ port_buf);
+ }
+ len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
+
+ for (i = 0; i < smi->num_mib_counters; i++) {
+ len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s ",
+ smi->mib_counters[i].name);
+ for (j = 0; j < smi->num_ports; j++) {
+ unsigned long long counter = 0;
+
+ if (!smi->ops->get_mib_counter(smi, i, j, &counter))
+ len += snprintf(buf + len,
+ sizeof(smi->buf) - len,
+ "%12llu ", counter);
+ else
+ len += snprintf(buf + len,
+ sizeof(smi->buf) - len,
+ "%12s ", "error");
+ }
+ len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
+ }
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_rtl8366_regs = {
+ .read = rtl8366_read_debugfs_reg,
+ .write = rtl8366_write_debugfs_reg,
+ .open = rtl8366_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+static const struct file_operations fops_rtl8366_vlan_mc = {
+ .read = rtl8366_read_debugfs_vlan_mc,
+ .open = rtl8366_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+static const struct file_operations fops_rtl8366_vlan_4k = {
+ .read = rtl8366_read_debugfs_vlan_4k,
+ .open = rtl8366_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+static const struct file_operations fops_rtl8366_pvid = {
+ .read = rtl8366_read_debugfs_pvid,
+ .open = rtl8366_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+static const struct file_operations fops_rtl8366_mibs = {
+ .read = rtl8366_read_debugfs_mibs,
+ .open = rtl8366_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+static void rtl8366_debugfs_init(struct rtl8366_smi *smi)
+{
+ struct dentry *node;
+ struct dentry *root;
+
+ if (!smi->debugfs_root)
+ smi->debugfs_root = debugfs_create_dir(dev_name(smi->parent),
+ NULL);
+
+ if (!smi->debugfs_root) {
+ dev_err(smi->parent, "Unable to create debugfs dir\n");
+ return;
+ }
+ root = smi->debugfs_root;
+
+ node = debugfs_create_x16("reg", S_IRUGO | S_IWUSR, root,
+ &smi->dbg_reg);
+ if (!node) {
+ dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
+ "reg");
+ return;
+ }
+
+ node = debugfs_create_file("val", S_IRUGO | S_IWUSR, root, smi,
+ &fops_rtl8366_regs);
+ if (!node) {
+ dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
+ "val");
+ return;
+ }
+
+ node = debugfs_create_file("vlan_mc", S_IRUSR, root, smi,
+ &fops_rtl8366_vlan_mc);
+ if (!node) {
+ dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
+ "vlan_mc");
+ return;
+ }
+
+ node = debugfs_create_u8("vlan_4k_page", S_IRUGO | S_IWUSR, root,
+ &smi->dbg_vlan_4k_page);
+ if (!node) {
+ dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
+ "vlan_4k_page");
+ return;
+ }
+
+ node = debugfs_create_file("vlan_4k", S_IRUSR, root, smi,
+ &fops_rtl8366_vlan_4k);
+ if (!node) {
+ dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
+ "vlan_4k");
+ return;
+ }
+
+ node = debugfs_create_file("pvid", S_IRUSR, root, smi,
+ &fops_rtl8366_pvid);
+ if (!node) {
+ dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
+ "pvid");
+ return;
+ }
+
+ node = debugfs_create_file("mibs", S_IRUSR, smi->debugfs_root, smi,
+ &fops_rtl8366_mibs);
+ if (!node)
+ dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
+ "mibs");
+}
+
+static void rtl8366_debugfs_remove(struct rtl8366_smi *smi)
+{
+ if (smi->debugfs_root) {
+ debugfs_remove_recursive(smi->debugfs_root);
+ smi->debugfs_root = NULL;
+ }
+}
+#else
+static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
+static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
+#endif /* CONFIG_RTL8366_SMI_DEBUG_FS */
+
+static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
+{
+ int ret;
+ int i;
+
+ smi->mii_bus = mdiobus_alloc();
+ if (smi->mii_bus == NULL) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ smi->mii_bus->priv = (void *) smi;
+ smi->mii_bus->name = dev_name(smi->parent);
+ smi->mii_bus->read = smi->ops->mii_read;
+ smi->mii_bus->write = smi->ops->mii_write;
+ snprintf(smi->mii_bus->id, MII_BUS_ID_SIZE, "%s",
+ dev_name(smi->parent));
+ smi->mii_bus->parent = smi->parent;
+ smi->mii_bus->phy_mask = ~(0x1f);
+ smi->mii_bus->irq = smi->mii_irq;
+ for (i = 0; i < PHY_MAX_ADDR; i++)
+ smi->mii_irq[i] = PHY_POLL;
+
+ ret = mdiobus_register(smi->mii_bus);
+ if (ret)
+ goto err_free;
+
+ return 0;
+
+ err_free:
+ mdiobus_free(smi->mii_bus);
+ err:
+ return ret;
+}
+
+static void rtl8366_smi_mii_cleanup(struct rtl8366_smi *smi)
+{
+ mdiobus_unregister(smi->mii_bus);
+ mdiobus_free(smi->mii_bus);
+}
+
+int rtl8366_sw_reset_switch(struct switch_dev *dev)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ int err;
+
+ err = rtl8366_reset(smi);
+ if (err)
+ return err;
+
+ err = smi->ops->setup(smi);
+ if (err)
+ return err;
+
+ err = rtl8366_reset_vlan(smi);
+ if (err)
+ return err;
+
+ err = rtl8366_enable_vlan(smi, 1);
+ if (err)
+ return err;
+
+ return rtl8366_enable_all_ports(smi, 1);
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_reset_switch);
+
+int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ return rtl8366_get_pvid(smi, port, val);
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid);
+
+int rtl8366_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ return rtl8366_set_pvid(smi, port, val);
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid);
+
+int rtl8366_sw_get_port_mib(struct switch_dev *dev,
+ const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ int i, len = 0;
+ unsigned long long counter = 0;
+ char *buf = smi->buf;
+
+ if (val->port_vlan >= smi->num_ports)
+ return -EINVAL;
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "Port %d MIB counters\n",
+ val->port_vlan);
+
+ for (i = 0; i < smi->num_mib_counters; ++i) {
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%-36s: ", smi->mib_counters[i].name);
+ if (!smi->ops->get_mib_counter(smi, i, val->port_vlan,
+ &counter))
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%llu\n", counter);
+ else
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "%s\n", "error");
+ }
+
+ val->value.s = buf;
+ val->len = len;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
+
+int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
+ const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ int i;
+ u32 len = 0;
+ struct rtl8366_vlan_4k vlan4k;
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ char *buf = smi->buf;
+ int err;
+
+ if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
+ return -EINVAL;
+
+ memset(buf, '\0', sizeof(smi->buf));
+
+ err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
+ if (err)
+ return err;
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "VLAN %d: Ports: '", vlan4k.vid);
+
+ for (i = 0; i < smi->num_ports; i++) {
+ if (!(vlan4k.member & (1 << i)))
+ continue;
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len, "%d%s", i,
+ (vlan4k.untag & (1 << i)) ? "" : "t");
+ }
+
+ len += snprintf(buf + len, sizeof(smi->buf) - len,
+ "', members=%04x, untag=%04x, fid=%u",
+ vlan4k.member, vlan4k.untag, vlan4k.fid);
+
+ val->value.s = buf;
+ val->len = len;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info);
+
+int rtl8366_sw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ struct switch_port *port;
+ struct rtl8366_vlan_4k vlan4k;
+ int i;
+
+ if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
+ return -EINVAL;
+
+ smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
+
+ port = &val->value.ports[0];
+ val->len = 0;
+ for (i = 0; i < smi->num_ports; i++) {
+ if (!(vlan4k.member & BIT(i)))
+ continue;
+
+ port->id = i;
+ port->flags = (vlan4k.untag & BIT(i)) ?
+ 0 : BIT(SWITCH_PORT_FLAG_TAGGED);
+ val->len++;
+ port++;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports);
+
+int rtl8366_sw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ struct switch_port *port;
+ u32 member = 0;
+ u32 untag = 0;
+ int err;
+ int i;
+
+ if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
+ return -EINVAL;
+
+ port = &val->value.ports[0];
+ for (i = 0; i < val->len; i++, port++) {
+ int pvid = 0;
+ member |= BIT(port->id);
+
+ if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED)))
+ untag |= BIT(port->id);
+
+ /*
+ * To ensure that we have a valid MC entry for this VLAN,
+ * initialize the port VLAN ID here.
+ */
+ err = rtl8366_get_pvid(smi, port->id, &pvid);
+ if (err < 0)
+ return err;
+ if (pvid == 0) {
+ err = rtl8366_set_pvid(smi, port->id, val->port_vlan);
+ if (err < 0)
+ return err;
+ }
+ }
+
+ return rtl8366_set_vlan(smi, val->port_vlan, member, untag, 0);
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports);
+
+int rtl8366_sw_get_vlan_fid(struct switch_dev *dev,
+ const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct rtl8366_vlan_4k vlan4k;
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ int err;
+
+ if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
+ return -EINVAL;
+
+ err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
+ if (err)
+ return err;
+
+ val->value.i = vlan4k.fid;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_fid);
+
+int rtl8366_sw_set_vlan_fid(struct switch_dev *dev,
+ const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct rtl8366_vlan_4k vlan4k;
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ int err;
+
+ if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
+ return -EINVAL;
+
+ if (val->value.i < 0 || val->value.i > attr->max)
+ return -EINVAL;
+
+ err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
+ if (err)
+ return err;
+
+ return rtl8366_set_vlan(smi, val->port_vlan,
+ vlan4k.member,
+ vlan4k.untag,
+ val->value.i);
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_fid);
+
+int rtl8366_sw_get_vlan_enable(struct switch_dev *dev,
+ const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+
+ if (attr->ofs > 2)
+ return -EINVAL;
+
+ if (attr->ofs == 1)
+ val->value.i = smi->vlan_enabled;
+ else
+ val->value.i = smi->vlan4k_enabled;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_enable);
+
+int rtl8366_sw_set_vlan_enable(struct switch_dev *dev,
+ const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
+ int err;
+
+ if (attr->ofs > 2)
+ return -EINVAL;
+
+ if (attr->ofs == 1)
+ err = rtl8366_enable_vlan(smi, val->value.i);
+ else
+ err = rtl8366_enable_vlan4k(smi, val->value.i);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_enable);
+
+struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
+{
+ struct rtl8366_smi *smi;
+
+ BUG_ON(!parent);
+
+ smi = kzalloc(sizeof(*smi), GFP_KERNEL);
+ if (!smi) {
+ dev_err(parent, "no memory for private data\n");
+ return NULL;
+ }
+
+ smi->parent = parent;
+ return smi;
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
+
+static int __rtl8366_smi_init(struct rtl8366_smi *smi, const char *name)
+{
+ int err;
+
+ err = gpio_request(smi->gpio_sda, name);
+ if (err) {
+ printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
+ smi->gpio_sda, err);
+ goto err_out;
+ }
+
+ err = gpio_request(smi->gpio_sck, name);
+ if (err) {
+ printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
+ smi->gpio_sck, err);
+ goto err_free_sda;
+ }
+
+ spin_lock_init(&smi->lock);
+
+ /* start the switch */
+ if (smi->hw_reset) {
+ smi->hw_reset(false);
+ msleep(RTL8366_SMI_HW_START_DELAY);
+ }
+
+ return 0;
+
+ err_free_sda:
+ gpio_free(smi->gpio_sda);
+ err_out:
+ return err;
+}
+
+static void __rtl8366_smi_cleanup(struct rtl8366_smi *smi)
+{
+ if (smi->hw_reset)
+ smi->hw_reset(true);
+
+ gpio_free(smi->gpio_sck);
+ gpio_free(smi->gpio_sda);
+}
+
+enum rtl8366_type rtl8366_smi_detect(struct rtl8366_platform_data *pdata)
+{
+ static struct rtl8366_smi smi;
+ enum rtl8366_type type = RTL8366_TYPE_UNKNOWN;
+ u32 reg = 0;
+
+ memset(&smi, 0, sizeof(smi));
+ smi.gpio_sda = pdata->gpio_sda;
+ smi.gpio_sck = pdata->gpio_sck;
+ smi.clk_delay = 10;
+ smi.cmd_read = 0xa9;
+ smi.cmd_write = 0xa8;
+
+ if (__rtl8366_smi_init(&smi, "rtl8366"))
+ goto out;
+
+ if (rtl8366_smi_read_reg(&smi, 0x5c, &reg))
+ goto cleanup;
+
+ switch(reg) {
+ case 0x6027:
+ printk("Found an RTL8366S switch\n");
+ type = RTL8366_TYPE_S;
+ break;
+ case 0x5937:
+ printk("Found an RTL8366RB switch\n");
+ type = RTL8366_TYPE_RB;
+ break;
+ default:
+ printk("Found an Unknown RTL8366 switch (id=0x%04x)\n", reg);
+ break;
+ }
+
+cleanup:
+ __rtl8366_smi_cleanup(&smi);
+out:
+ return type;
+}
+
+int rtl8366_smi_init(struct rtl8366_smi *smi)
+{
+ int err;
+
+ if (!smi->ops)
+ return -EINVAL;
+
+ err = __rtl8366_smi_init(smi, dev_name(smi->parent));
+ if (err)
+ goto err_out;
+
+ dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
+ smi->gpio_sda, smi->gpio_sck);
+
+ err = smi->ops->detect(smi);
+ if (err) {
+ dev_err(smi->parent, "chip detection failed, err=%d\n", err);
+ goto err_free_sck;
+ }
+
+ err = rtl8366_reset(smi);
+ if (err)
+ goto err_free_sck;
+
+ err = smi->ops->setup(smi);
+ if (err) {
+ dev_err(smi->parent, "chip setup failed, err=%d\n", err);
+ goto err_free_sck;
+ }
+
+ err = rtl8366_init_vlan(smi);
+ if (err) {
+ dev_err(smi->parent, "VLAN initialization failed, err=%d\n",
+ err);
+ goto err_free_sck;
+ }
+
+ err = rtl8366_enable_all_ports(smi, 1);
+ if (err)
+ goto err_free_sck;
+
+ err = rtl8366_smi_mii_init(smi);
+ if (err)
+ goto err_free_sck;
+
+ rtl8366_debugfs_init(smi);
+
+ return 0;
+
+ err_free_sck:
+ __rtl8366_smi_cleanup(smi);
+ err_out:
+ return err;
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_init);
+
+void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
+{
+ rtl8366_debugfs_remove(smi);
+ rtl8366_smi_mii_cleanup(smi);
+ __rtl8366_smi_cleanup(smi);
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
+
+#ifdef CONFIG_OF
+int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
+{
+ int sck = of_get_named_gpio(pdev->dev.of_node, "gpio-sck", 0);
+ int sda = of_get_named_gpio(pdev->dev.of_node, "gpio-sda", 0);
+
+ if (!gpio_is_valid(sck) || !gpio_is_valid(sda)) {
+ dev_err(&pdev->dev, "gpios missing in devictree\n");
+ return -EINVAL;
+ }
+
+ smi->gpio_sda = sda;
+ smi->gpio_sck = sck;
+
+ return 0;
+}
+#else
+static inline int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
+{
+ return -ENODEV;
+}
+#endif
+
+int rtl8366_smi_probe_plat(struct platform_device *pdev, struct rtl8366_smi *smi)
+{
+ struct rtl8366_platform_data *pdata = pdev->dev.platform_data;
+
+ if (!pdev->dev.platform_data) {
+ dev_err(&pdev->dev, "no platform data specified\n");
+ return -EINVAL;
+ }
+
+ smi->gpio_sda = pdata->gpio_sda;
+ smi->gpio_sck = pdata->gpio_sck;
+ smi->hw_reset = pdata->hw_reset;
+
+ return 0;
+}
+
+
+struct rtl8366_smi *rtl8366_smi_probe(struct platform_device *pdev)
+{
+ struct rtl8366_smi *smi;
+ int err;
+
+ smi = rtl8366_smi_alloc(&pdev->dev);
+ if (!smi)
+ return NULL;
+
+ if (pdev->dev.of_node)
+ err = rtl8366_smi_probe_of(pdev, smi);
+ else
+ err = rtl8366_smi_probe_plat(pdev, smi);
+
+ if (err)
+ goto free_smi;
+
+ return smi;
+
+free_smi:
+ kfree(smi);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_probe);
+
+MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
+MODULE_LICENSE("GPL v2");