2 * Realtek RTL8366 SMI interface driver
4 * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/device.h>
14 #include <linux/delay.h>
15 #include <linux/gpio.h>
16 #include <linux/spinlock.h>
17 #include <linux/skbuff.h>
19 #include <linux/of_platform.h>
20 #include <linux/of_gpio.h>
21 #include <linux/rtl8366.h>
22 #include <linux/version.h>
23 #include <linux/of_mdio.h>
25 #ifdef CONFIG_RTL8366_SMI_DEBUG_FS
26 #include <linux/debugfs.h>
29 #include "rtl8366_smi.h"
31 #define RTL8366_SMI_ACK_RETRY_COUNT 5
33 #define RTL8366_SMI_HW_STOP_DELAY 25 /* msecs */
34 #define RTL8366_SMI_HW_START_DELAY 100 /* msecs */
36 static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
38 ndelay(smi->clk_delay);
41 static void rtl8366_smi_start(struct rtl8366_smi *smi)
43 unsigned int sda = smi->gpio_sda;
44 unsigned int sck = smi->gpio_sck;
47 * Set GPIO pins to output mode, with initial state:
50 gpio_direction_output(sck, 0);
51 gpio_direction_output(sda, 1);
52 rtl8366_smi_clk_delay(smi);
54 /* CLK 1: 0 -> 1, 1 -> 0 */
55 gpio_set_value(sck, 1);
56 rtl8366_smi_clk_delay(smi);
57 gpio_set_value(sck, 0);
58 rtl8366_smi_clk_delay(smi);
61 gpio_set_value(sck, 1);
62 rtl8366_smi_clk_delay(smi);
63 gpio_set_value(sda, 0);
64 rtl8366_smi_clk_delay(smi);
65 gpio_set_value(sck, 0);
66 rtl8366_smi_clk_delay(smi);
67 gpio_set_value(sda, 1);
70 static void rtl8366_smi_stop(struct rtl8366_smi *smi)
72 unsigned int sda = smi->gpio_sda;
73 unsigned int sck = smi->gpio_sck;
75 rtl8366_smi_clk_delay(smi);
76 gpio_set_value(sda, 0);
77 gpio_set_value(sck, 1);
78 rtl8366_smi_clk_delay(smi);
79 gpio_set_value(sda, 1);
80 rtl8366_smi_clk_delay(smi);
81 gpio_set_value(sck, 1);
82 rtl8366_smi_clk_delay(smi);
83 gpio_set_value(sck, 0);
84 rtl8366_smi_clk_delay(smi);
85 gpio_set_value(sck, 1);
88 rtl8366_smi_clk_delay(smi);
89 gpio_set_value(sck, 0);
90 rtl8366_smi_clk_delay(smi);
91 gpio_set_value(sck, 1);
93 /* set GPIO pins to input mode */
94 gpio_direction_input(sda);
95 gpio_direction_input(sck);
98 static void rtl8366_smi_write_bits(struct rtl8366_smi *smi, u32 data, u32 len)
100 unsigned int sda = smi->gpio_sda;
101 unsigned int sck = smi->gpio_sck;
103 for (; len > 0; len--) {
104 rtl8366_smi_clk_delay(smi);
107 gpio_set_value(sda, !!(data & ( 1 << (len - 1))));
108 rtl8366_smi_clk_delay(smi);
111 gpio_set_value(sck, 1);
112 rtl8366_smi_clk_delay(smi);
113 gpio_set_value(sck, 0);
117 static void rtl8366_smi_read_bits(struct rtl8366_smi *smi, u32 len, u32 *data)
119 unsigned int sda = smi->gpio_sda;
120 unsigned int sck = smi->gpio_sck;
122 gpio_direction_input(sda);
124 for (*data = 0; len > 0; len--) {
127 rtl8366_smi_clk_delay(smi);
130 gpio_set_value(sck, 1);
131 rtl8366_smi_clk_delay(smi);
132 u = !!gpio_get_value(sda);
133 gpio_set_value(sck, 0);
135 *data |= (u << (len - 1));
138 gpio_direction_output(sda, 0);
141 static int rtl8366_smi_wait_for_ack(struct rtl8366_smi *smi)
149 rtl8366_smi_read_bits(smi, 1, &ack);
153 if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT) {
154 dev_err(smi->parent, "ACK timeout\n");
162 static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
164 rtl8366_smi_write_bits(smi, data, 8);
165 return rtl8366_smi_wait_for_ack(smi);
168 static int rtl8366_smi_write_byte_noack(struct rtl8366_smi *smi, u8 data)
170 rtl8366_smi_write_bits(smi, data, 8);
174 static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
179 rtl8366_smi_read_bits(smi, 8, &t);
183 rtl8366_smi_write_bits(smi, 0x00, 1);
188 static int rtl8366_smi_read_byte1(struct rtl8366_smi *smi, u8 *data)
193 rtl8366_smi_read_bits(smi, 8, &t);
197 rtl8366_smi_write_bits(smi, 0x01, 1);
202 static int __rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
209 spin_lock_irqsave(&smi->lock, flags);
211 rtl8366_smi_start(smi);
213 /* send READ command */
214 ret = rtl8366_smi_write_byte(smi, smi->cmd_read);
219 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
224 ret = rtl8366_smi_write_byte(smi, addr >> 8);
229 rtl8366_smi_read_byte0(smi, &lo);
230 /* read DATA[15:8] */
231 rtl8366_smi_read_byte1(smi, &hi);
233 *data = ((u32) lo) | (((u32) hi) << 8);
238 rtl8366_smi_stop(smi);
239 spin_unlock_irqrestore(&smi->lock, flags);
243 /* Read/write via mdiobus */
244 #define MDC_MDIO_CTRL0_REG 31
245 #define MDC_MDIO_START_REG 29
246 #define MDC_MDIO_CTRL1_REG 21
247 #define MDC_MDIO_ADDRESS_REG 23
248 #define MDC_MDIO_DATA_WRITE_REG 24
249 #define MDC_MDIO_DATA_READ_REG 25
251 #define MDC_MDIO_START_OP 0xFFFF
252 #define MDC_MDIO_ADDR_OP 0x000E
253 #define MDC_MDIO_READ_OP 0x0001
254 #define MDC_MDIO_WRITE_OP 0x0003
255 #define MDC_REALTEK_PHY_ADDR 0x0
257 int __rtl8366_mdio_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
259 u32 phy_id = MDC_REALTEK_PHY_ADDR;
260 struct mii_bus *mbus = smi->ext_mbus;
262 BUG_ON(in_interrupt());
264 mutex_lock(&mbus->mdio_lock);
265 /* Write Start command to register 29 */
266 mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
268 /* Write address control code to register 31 */
269 mbus->write(mbus, phy_id, MDC_MDIO_CTRL0_REG, MDC_MDIO_ADDR_OP);
271 /* Write Start command to register 29 */
272 mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
274 /* Write address to register 23 */
275 mbus->write(mbus, phy_id, MDC_MDIO_ADDRESS_REG, addr);
277 /* Write Start command to register 29 */
278 mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
280 /* Write read control code to register 21 */
281 mbus->write(mbus, phy_id, MDC_MDIO_CTRL1_REG, MDC_MDIO_READ_OP);
283 /* Write Start command to register 29 */
284 mbus->write(smi->ext_mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
286 /* Read data from register 25 */
287 *data = mbus->read(mbus, phy_id, MDC_MDIO_DATA_READ_REG);
289 mutex_unlock(&mbus->mdio_lock);
294 static int __rtl8366_mdio_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
296 u32 phy_id = MDC_REALTEK_PHY_ADDR;
297 struct mii_bus *mbus = smi->ext_mbus;
299 BUG_ON(in_interrupt());
301 mutex_lock(&mbus->mdio_lock);
303 /* Write Start command to register 29 */
304 mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
306 /* Write address control code to register 31 */
307 mbus->write(mbus, phy_id, MDC_MDIO_CTRL0_REG, MDC_MDIO_ADDR_OP);
309 /* Write Start command to register 29 */
310 mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
312 /* Write address to register 23 */
313 mbus->write(mbus, phy_id, MDC_MDIO_ADDRESS_REG, addr);
315 /* Write Start command to register 29 */
316 mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
318 /* Write data to register 24 */
319 mbus->write(mbus, phy_id, MDC_MDIO_DATA_WRITE_REG, data);
321 /* Write Start command to register 29 */
322 mbus->write(mbus, phy_id, MDC_MDIO_START_REG, MDC_MDIO_START_OP);
324 /* Write data control code to register 21 */
325 mbus->write(mbus, phy_id, MDC_MDIO_CTRL1_REG, MDC_MDIO_WRITE_OP);
327 mutex_unlock(&mbus->mdio_lock);
331 int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
334 return __rtl8366_mdio_read_reg(smi, addr, data);
336 return __rtl8366_smi_read_reg(smi, addr, data);
338 EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
340 static int __rtl8366_smi_write_reg(struct rtl8366_smi *smi,
341 u32 addr, u32 data, bool ack)
346 spin_lock_irqsave(&smi->lock, flags);
348 rtl8366_smi_start(smi);
350 /* send WRITE command */
351 ret = rtl8366_smi_write_byte(smi, smi->cmd_write);
356 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
361 ret = rtl8366_smi_write_byte(smi, addr >> 8);
365 /* write DATA[7:0] */
366 ret = rtl8366_smi_write_byte(smi, data & 0xff);
370 /* write DATA[15:8] */
372 ret = rtl8366_smi_write_byte(smi, data >> 8);
374 ret = rtl8366_smi_write_byte_noack(smi, data >> 8);
381 rtl8366_smi_stop(smi);
382 spin_unlock_irqrestore(&smi->lock, flags);
387 int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
390 return __rtl8366_mdio_write_reg(smi, addr, data);
392 return __rtl8366_smi_write_reg(smi, addr, data, true);
394 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
396 int rtl8366_smi_write_reg_noack(struct rtl8366_smi *smi, u32 addr, u32 data)
398 return __rtl8366_smi_write_reg(smi, addr, data, false);
400 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg_noack);
402 int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
407 err = rtl8366_smi_read_reg(smi, addr, &t);
411 err = rtl8366_smi_write_reg(smi, addr, (t & ~mask) | data);
415 EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
417 static int rtl8366_reset(struct rtl8366_smi *smi)
420 smi->hw_reset(smi, true);
421 msleep(RTL8366_SMI_HW_STOP_DELAY);
422 smi->hw_reset(smi, false);
423 msleep(RTL8366_SMI_HW_START_DELAY);
427 return smi->ops->reset_chip(smi);
430 static int rtl8366_mc_is_used(struct rtl8366_smi *smi, int mc_index, int *used)
436 for (i = 0; i < smi->num_ports; i++) {
439 err = smi->ops->get_mc_index(smi, i, &index);
443 if (mc_index == index) {
452 static int rtl8366_set_vlan(struct rtl8366_smi *smi, int vid, u32 member,
455 struct rtl8366_vlan_4k vlan4k;
459 /* Update the 4K table */
460 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
464 vlan4k.member = member;
465 vlan4k.untag = untag;
467 err = smi->ops->set_vlan_4k(smi, &vlan4k);
471 /* Try to find an existing MC entry for this VID */
472 for (i = 0; i < smi->num_vlan_mc; i++) {
473 struct rtl8366_vlan_mc vlanmc;
475 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
479 if (vid == vlanmc.vid) {
480 /* update the MC entry */
481 vlanmc.member = member;
482 vlanmc.untag = untag;
485 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
493 static int rtl8366_get_pvid(struct rtl8366_smi *smi, int port, int *val)
495 struct rtl8366_vlan_mc vlanmc;
499 err = smi->ops->get_mc_index(smi, port, &index);
503 err = smi->ops->get_vlan_mc(smi, index, &vlanmc);
511 static int rtl8366_set_pvid(struct rtl8366_smi *smi, unsigned port,
514 struct rtl8366_vlan_mc vlanmc;
515 struct rtl8366_vlan_4k vlan4k;
519 /* Try to find an existing MC entry for this VID */
520 for (i = 0; i < smi->num_vlan_mc; i++) {
521 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
525 if (vid == vlanmc.vid) {
526 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
530 err = smi->ops->set_mc_index(smi, port, i);
535 /* We have no MC entry for this VID, try to find an empty one */
536 for (i = 0; i < smi->num_vlan_mc; i++) {
537 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
541 if (vlanmc.vid == 0 && vlanmc.member == 0) {
542 /* Update the entry from the 4K table */
543 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
548 vlanmc.member = vlan4k.member;
549 vlanmc.untag = vlan4k.untag;
550 vlanmc.fid = vlan4k.fid;
551 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
555 err = smi->ops->set_mc_index(smi, port, i);
560 /* MC table is full, try to find an unused entry and replace it */
561 for (i = 0; i < smi->num_vlan_mc; i++) {
564 err = rtl8366_mc_is_used(smi, i, &used);
569 /* Update the entry from the 4K table */
570 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
575 vlanmc.member = vlan4k.member;
576 vlanmc.untag = vlan4k.untag;
577 vlanmc.fid = vlan4k.fid;
578 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
582 err = smi->ops->set_mc_index(smi, port, i);
588 "all VLAN member configurations are in use\n");
593 int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
597 err = smi->ops->enable_vlan(smi, enable);
601 smi->vlan_enabled = enable;
604 smi->vlan4k_enabled = 0;
605 err = smi->ops->enable_vlan4k(smi, enable);
610 EXPORT_SYMBOL_GPL(rtl8366_enable_vlan);
612 static int rtl8366_enable_vlan4k(struct rtl8366_smi *smi, int enable)
617 err = smi->ops->enable_vlan(smi, enable);
621 smi->vlan_enabled = enable;
624 err = smi->ops->enable_vlan4k(smi, enable);
628 smi->vlan4k_enabled = enable;
632 int rtl8366_enable_all_ports(struct rtl8366_smi *smi, int enable)
637 for (port = 0; port < smi->num_ports; port++) {
638 err = smi->ops->enable_port(smi, port, enable);
645 EXPORT_SYMBOL_GPL(rtl8366_enable_all_ports);
647 int rtl8366_reset_vlan(struct rtl8366_smi *smi)
649 struct rtl8366_vlan_mc vlanmc;
653 rtl8366_enable_vlan(smi, 0);
654 rtl8366_enable_vlan4k(smi, 0);
656 /* clear VLAN member configurations */
662 for (i = 0; i < smi->num_vlan_mc; i++) {
663 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
670 EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
672 static int rtl8366_init_vlan(struct rtl8366_smi *smi)
677 err = rtl8366_reset_vlan(smi);
681 for (port = 0; port < smi->num_ports; port++) {
684 if (port == smi->cpu_port)
685 mask = (1 << smi->num_ports) - 1;
687 mask = (1 << port) | (1 << smi->cpu_port);
689 err = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0);
693 err = rtl8366_set_pvid(smi, port, (port + 1));
698 return rtl8366_enable_vlan(smi, 1);
701 #ifdef CONFIG_RTL8366_SMI_DEBUG_FS
702 int rtl8366_debugfs_open(struct inode *inode, struct file *file)
704 file->private_data = inode->i_private;
707 EXPORT_SYMBOL_GPL(rtl8366_debugfs_open);
709 static ssize_t rtl8366_read_debugfs_vlan_mc(struct file *file,
710 char __user *user_buf,
711 size_t count, loff_t *ppos)
713 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
715 char *buf = smi->buf;
717 len += snprintf(buf + len, sizeof(smi->buf) - len,
718 "%2s %6s %4s %6s %6s %3s\n",
719 "id", "vid","prio", "member", "untag", "fid");
721 for (i = 0; i < smi->num_vlan_mc; ++i) {
722 struct rtl8366_vlan_mc vlanmc;
724 smi->ops->get_vlan_mc(smi, i, &vlanmc);
726 len += snprintf(buf + len, sizeof(smi->buf) - len,
727 "%2d %6d %4d 0x%04x 0x%04x %3d\n",
728 i, vlanmc.vid, vlanmc.priority,
729 vlanmc.member, vlanmc.untag, vlanmc.fid);
732 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
735 #define RTL8366_VLAN4K_PAGE_SIZE 64
736 #define RTL8366_VLAN4K_NUM_PAGES (4096 / RTL8366_VLAN4K_PAGE_SIZE)
738 static ssize_t rtl8366_read_debugfs_vlan_4k(struct file *file,
739 char __user *user_buf,
740 size_t count, loff_t *ppos)
742 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
745 char *buf = smi->buf;
747 if (smi->dbg_vlan_4k_page >= RTL8366_VLAN4K_NUM_PAGES) {
748 len += snprintf(buf + len, sizeof(smi->buf) - len,
749 "invalid page: %u\n", smi->dbg_vlan_4k_page);
750 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
753 len += snprintf(buf + len, sizeof(smi->buf) - len,
755 "vid", "member", "untag", "fid");
757 offset = RTL8366_VLAN4K_PAGE_SIZE * smi->dbg_vlan_4k_page;
758 for (i = 0; i < RTL8366_VLAN4K_PAGE_SIZE; i++) {
759 struct rtl8366_vlan_4k vlan4k;
761 smi->ops->get_vlan_4k(smi, offset + i, &vlan4k);
763 len += snprintf(buf + len, sizeof(smi->buf) - len,
764 "%4d 0x%04x 0x%04x %3d\n",
765 vlan4k.vid, vlan4k.member,
766 vlan4k.untag, vlan4k.fid);
769 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
772 static ssize_t rtl8366_read_debugfs_pvid(struct file *file,
773 char __user *user_buf,
774 size_t count, loff_t *ppos)
776 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
777 char *buf = smi->buf;
781 len += snprintf(buf + len, sizeof(smi->buf) - len, "%4s %4s\n",
784 for (i = 0; i < smi->num_ports; i++) {
788 err = rtl8366_get_pvid(smi, i, &pvid);
790 len += snprintf(buf + len, sizeof(smi->buf) - len,
793 len += snprintf(buf + len, sizeof(smi->buf) - len,
794 "%4d %4d\n", i, pvid);
797 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
800 static ssize_t rtl8366_read_debugfs_reg(struct file *file,
801 char __user *user_buf,
802 size_t count, loff_t *ppos)
804 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
805 u32 t, reg = smi->dbg_reg;
807 char *buf = smi->buf;
809 memset(buf, '\0', sizeof(smi->buf));
811 err = rtl8366_smi_read_reg(smi, reg, &t);
813 len += snprintf(buf, sizeof(smi->buf),
814 "Read failed (reg: 0x%04x)\n", reg);
815 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
818 len += snprintf(buf, sizeof(smi->buf), "reg = 0x%04x, val = 0x%04x\n",
821 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
824 static ssize_t rtl8366_write_debugfs_reg(struct file *file,
825 const char __user *user_buf,
826 size_t count, loff_t *ppos)
828 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
830 u32 reg = smi->dbg_reg;
833 char *buf = smi->buf;
835 len = min(count, sizeof(smi->buf) - 1);
836 if (copy_from_user(buf, user_buf, len)) {
837 dev_err(smi->parent, "copy from user failed\n");
842 if (len > 0 && buf[len - 1] == '\n')
846 if (kstrtoul(buf, 16, &data)) {
847 dev_err(smi->parent, "Invalid reg value %s\n", buf);
849 err = rtl8366_smi_write_reg(smi, reg, data);
852 "writing reg 0x%04x val 0x%04lx failed\n",
860 static ssize_t rtl8366_read_debugfs_mibs(struct file *file,
861 char __user *user_buf,
862 size_t count, loff_t *ppos)
864 struct rtl8366_smi *smi = file->private_data;
866 char *buf = smi->buf;
868 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s",
871 for (i = 0; i < smi->num_ports; i++) {
874 snprintf(port_buf, sizeof(port_buf), "Port %d", i);
875 len += snprintf(buf + len, sizeof(smi->buf) - len, " %12s",
878 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
880 for (i = 0; i < smi->num_mib_counters; i++) {
881 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s ",
882 smi->mib_counters[i].name);
883 for (j = 0; j < smi->num_ports; j++) {
884 unsigned long long counter = 0;
886 if (!smi->ops->get_mib_counter(smi, i, j, &counter))
887 len += snprintf(buf + len,
888 sizeof(smi->buf) - len,
891 len += snprintf(buf + len,
892 sizeof(smi->buf) - len,
895 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
898 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
901 static const struct file_operations fops_rtl8366_regs = {
902 .read = rtl8366_read_debugfs_reg,
903 .write = rtl8366_write_debugfs_reg,
904 .open = rtl8366_debugfs_open,
908 static const struct file_operations fops_rtl8366_vlan_mc = {
909 .read = rtl8366_read_debugfs_vlan_mc,
910 .open = rtl8366_debugfs_open,
914 static const struct file_operations fops_rtl8366_vlan_4k = {
915 .read = rtl8366_read_debugfs_vlan_4k,
916 .open = rtl8366_debugfs_open,
920 static const struct file_operations fops_rtl8366_pvid = {
921 .read = rtl8366_read_debugfs_pvid,
922 .open = rtl8366_debugfs_open,
926 static const struct file_operations fops_rtl8366_mibs = {
927 .read = rtl8366_read_debugfs_mibs,
928 .open = rtl8366_debugfs_open,
932 static void rtl8366_debugfs_init(struct rtl8366_smi *smi)
937 if (!smi->debugfs_root)
938 smi->debugfs_root = debugfs_create_dir(dev_name(smi->parent),
941 if (!smi->debugfs_root) {
942 dev_err(smi->parent, "Unable to create debugfs dir\n");
945 root = smi->debugfs_root;
947 node = debugfs_create_x16("reg", S_IRUGO | S_IWUSR, root,
950 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
955 node = debugfs_create_file("val", S_IRUGO | S_IWUSR, root, smi,
958 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
963 node = debugfs_create_file("vlan_mc", S_IRUSR, root, smi,
964 &fops_rtl8366_vlan_mc);
966 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
971 node = debugfs_create_u8("vlan_4k_page", S_IRUGO | S_IWUSR, root,
972 &smi->dbg_vlan_4k_page);
974 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
979 node = debugfs_create_file("vlan_4k", S_IRUSR, root, smi,
980 &fops_rtl8366_vlan_4k);
982 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
987 node = debugfs_create_file("pvid", S_IRUSR, root, smi,
990 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
995 node = debugfs_create_file("mibs", S_IRUSR, smi->debugfs_root, smi,
998 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
1002 static void rtl8366_debugfs_remove(struct rtl8366_smi *smi)
1004 if (smi->debugfs_root) {
1005 debugfs_remove_recursive(smi->debugfs_root);
1006 smi->debugfs_root = NULL;
1010 static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
1011 static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
1012 #endif /* CONFIG_RTL8366_SMI_DEBUG_FS */
1014 static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
1019 struct device_node *np = NULL;
1021 np = of_get_child_by_name(smi->parent->of_node, "mdio-bus");
1024 smi->mii_bus = mdiobus_alloc();
1025 if (smi->mii_bus == NULL) {
1030 smi->mii_bus->priv = (void *) smi;
1031 smi->mii_bus->name = dev_name(smi->parent);
1032 smi->mii_bus->read = smi->ops->mii_read;
1033 smi->mii_bus->write = smi->ops->mii_write;
1034 snprintf(smi->mii_bus->id, MII_BUS_ID_SIZE, "%s",
1035 dev_name(smi->parent));
1036 smi->mii_bus->parent = smi->parent;
1037 smi->mii_bus->phy_mask = ~(0x1f);
1038 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
1041 smi->mii_bus->irq = smi->mii_irq;
1042 for (i = 0; i < PHY_MAX_ADDR; i++)
1043 smi->mii_irq[i] = PHY_POLL;
1049 ret = of_mdiobus_register(smi->mii_bus, np);
1052 ret = mdiobus_register(smi->mii_bus);
1060 mdiobus_free(smi->mii_bus);
1065 static void rtl8366_smi_mii_cleanup(struct rtl8366_smi *smi)
1067 mdiobus_unregister(smi->mii_bus);
1068 mdiobus_free(smi->mii_bus);
1071 int rtl8366_sw_reset_switch(struct switch_dev *dev)
1073 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1076 err = rtl8366_reset(smi);
1080 err = smi->ops->setup(smi);
1084 err = rtl8366_reset_vlan(smi);
1088 err = rtl8366_enable_vlan(smi, 1);
1092 return rtl8366_enable_all_ports(smi, 1);
1094 EXPORT_SYMBOL_GPL(rtl8366_sw_reset_switch);
1096 int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
1098 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1099 return rtl8366_get_pvid(smi, port, val);
1101 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid);
1103 int rtl8366_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
1105 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1106 return rtl8366_set_pvid(smi, port, val);
1108 EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid);
1110 int rtl8366_sw_get_port_mib(struct switch_dev *dev,
1111 const struct switch_attr *attr,
1112 struct switch_val *val)
1114 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1116 unsigned long long counter = 0;
1117 char *buf = smi->buf;
1119 if (val->port_vlan >= smi->num_ports)
1122 len += snprintf(buf + len, sizeof(smi->buf) - len,
1123 "Port %d MIB counters\n",
1126 for (i = 0; i < smi->num_mib_counters; ++i) {
1127 len += snprintf(buf + len, sizeof(smi->buf) - len,
1128 "%-36s: ", smi->mib_counters[i].name);
1129 if (!smi->ops->get_mib_counter(smi, i, val->port_vlan,
1131 len += snprintf(buf + len, sizeof(smi->buf) - len,
1134 len += snprintf(buf + len, sizeof(smi->buf) - len,
1142 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
1144 int rtl8366_sw_get_port_stats(struct switch_dev *dev, int port,
1145 struct switch_port_stats *stats,
1146 int txb_id, int rxb_id)
1148 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1149 unsigned long long counter = 0;
1152 if (port >= smi->num_ports)
1155 ret = smi->ops->get_mib_counter(smi, txb_id, port, &counter);
1159 stats->tx_bytes = counter;
1161 ret = smi->ops->get_mib_counter(smi, rxb_id, port, &counter);
1165 stats->rx_bytes = counter;
1169 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_stats);
1171 int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
1172 const struct switch_attr *attr,
1173 struct switch_val *val)
1177 struct rtl8366_vlan_4k vlan4k;
1178 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1179 char *buf = smi->buf;
1182 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1185 memset(buf, '\0', sizeof(smi->buf));
1187 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1191 len += snprintf(buf + len, sizeof(smi->buf) - len,
1192 "VLAN %d: Ports: '", vlan4k.vid);
1194 for (i = 0; i < smi->num_ports; i++) {
1195 if (!(vlan4k.member & (1 << i)))
1198 len += snprintf(buf + len, sizeof(smi->buf) - len, "%d%s", i,
1199 (vlan4k.untag & (1 << i)) ? "" : "t");
1202 len += snprintf(buf + len, sizeof(smi->buf) - len,
1203 "', members=%04x, untag=%04x, fid=%u",
1204 vlan4k.member, vlan4k.untag, vlan4k.fid);
1211 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info);
1213 int rtl8366_sw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
1215 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1216 struct switch_port *port;
1217 struct rtl8366_vlan_4k vlan4k;
1220 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1223 smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1225 port = &val->value.ports[0];
1227 for (i = 0; i < smi->num_ports; i++) {
1228 if (!(vlan4k.member & BIT(i)))
1232 port->flags = (vlan4k.untag & BIT(i)) ?
1233 0 : BIT(SWITCH_PORT_FLAG_TAGGED);
1239 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports);
1241 int rtl8366_sw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
1243 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1244 struct switch_port *port;
1250 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1253 port = &val->value.ports[0];
1254 for (i = 0; i < val->len; i++, port++) {
1256 member |= BIT(port->id);
1258 if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED)))
1259 untag |= BIT(port->id);
1262 * To ensure that we have a valid MC entry for this VLAN,
1263 * initialize the port VLAN ID here.
1265 err = rtl8366_get_pvid(smi, port->id, &pvid);
1269 err = rtl8366_set_pvid(smi, port->id, val->port_vlan);
1275 return rtl8366_set_vlan(smi, val->port_vlan, member, untag, 0);
1277 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports);
1279 int rtl8366_sw_get_vlan_fid(struct switch_dev *dev,
1280 const struct switch_attr *attr,
1281 struct switch_val *val)
1283 struct rtl8366_vlan_4k vlan4k;
1284 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1287 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1290 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1294 val->value.i = vlan4k.fid;
1298 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_fid);
1300 int rtl8366_sw_set_vlan_fid(struct switch_dev *dev,
1301 const struct switch_attr *attr,
1302 struct switch_val *val)
1304 struct rtl8366_vlan_4k vlan4k;
1305 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1308 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1311 if (val->value.i < 0 || val->value.i > attr->max)
1314 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1318 return rtl8366_set_vlan(smi, val->port_vlan,
1323 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_fid);
1325 int rtl8366_sw_get_vlan_enable(struct switch_dev *dev,
1326 const struct switch_attr *attr,
1327 struct switch_val *val)
1329 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1335 val->value.i = smi->vlan_enabled;
1337 val->value.i = smi->vlan4k_enabled;
1341 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_enable);
1343 int rtl8366_sw_set_vlan_enable(struct switch_dev *dev,
1344 const struct switch_attr *attr,
1345 struct switch_val *val)
1347 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1354 err = rtl8366_enable_vlan(smi, val->value.i);
1356 err = rtl8366_enable_vlan4k(smi, val->value.i);
1360 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_enable);
1362 struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
1364 struct rtl8366_smi *smi;
1368 smi = kzalloc(sizeof(*smi), GFP_KERNEL);
1370 dev_err(parent, "no memory for private data\n");
1374 smi->parent = parent;
1377 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
1379 static int __rtl8366_smi_init(struct rtl8366_smi *smi, const char *name)
1383 if (!smi->ext_mbus) {
1384 err = gpio_request(smi->gpio_sda, name);
1386 printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
1387 smi->gpio_sda, err);
1391 err = gpio_request(smi->gpio_sck, name);
1393 printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
1394 smi->gpio_sck, err);
1399 spin_lock_init(&smi->lock);
1401 /* start the switch */
1402 if (smi->hw_reset) {
1403 smi->hw_reset(smi, false);
1404 msleep(RTL8366_SMI_HW_START_DELAY);
1410 gpio_free(smi->gpio_sda);
1415 static void __rtl8366_smi_cleanup(struct rtl8366_smi *smi)
1418 smi->hw_reset(smi, true);
1420 if (!smi->ext_mbus) {
1421 gpio_free(smi->gpio_sck);
1422 gpio_free(smi->gpio_sda);
1426 enum rtl8366_type rtl8366_smi_detect(struct rtl8366_platform_data *pdata)
1428 static struct rtl8366_smi smi;
1429 enum rtl8366_type type = RTL8366_TYPE_UNKNOWN;
1432 memset(&smi, 0, sizeof(smi));
1433 smi.gpio_sda = pdata->gpio_sda;
1434 smi.gpio_sck = pdata->gpio_sck;
1436 smi.cmd_read = 0xa9;
1437 smi.cmd_write = 0xa8;
1439 if (__rtl8366_smi_init(&smi, "rtl8366"))
1442 if (rtl8366_smi_read_reg(&smi, 0x5c, ®))
1447 printk("Found an RTL8366S switch\n");
1448 type = RTL8366_TYPE_S;
1451 printk("Found an RTL8366RB switch\n");
1452 type = RTL8366_TYPE_RB;
1455 printk("Found an Unknown RTL8366 switch (id=0x%04x)\n", reg);
1460 __rtl8366_smi_cleanup(&smi);
1465 int rtl8366_smi_init(struct rtl8366_smi *smi)
1472 err = __rtl8366_smi_init(smi, dev_name(smi->parent));
1477 dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
1478 smi->gpio_sda, smi->gpio_sck);
1480 dev_info(smi->parent, "using MDIO bus '%s'\n", smi->ext_mbus->name);
1482 err = smi->ops->detect(smi);
1484 dev_err(smi->parent, "chip detection failed, err=%d\n", err);
1488 err = rtl8366_reset(smi);
1492 err = smi->ops->setup(smi);
1494 dev_err(smi->parent, "chip setup failed, err=%d\n", err);
1498 err = rtl8366_init_vlan(smi);
1500 dev_err(smi->parent, "VLAN initialization failed, err=%d\n",
1505 err = rtl8366_enable_all_ports(smi, 1);
1509 err = rtl8366_smi_mii_init(smi);
1513 rtl8366_debugfs_init(smi);
1518 __rtl8366_smi_cleanup(smi);
1522 EXPORT_SYMBOL_GPL(rtl8366_smi_init);
1524 void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
1526 rtl8366_debugfs_remove(smi);
1527 rtl8366_smi_mii_cleanup(smi);
1528 __rtl8366_smi_cleanup(smi);
1530 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
1533 static void rtl8366_smi_reset(struct rtl8366_smi *smi, bool active)
1536 reset_control_assert(smi->reset);
1538 reset_control_deassert(smi->reset);
1541 int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
1543 int sck = of_get_named_gpio(pdev->dev.of_node, "gpio-sck", 0);
1544 int sda = of_get_named_gpio(pdev->dev.of_node, "gpio-sda", 0);
1545 struct device_node *np = pdev->dev.of_node;
1546 struct device_node *mdio_node;
1548 mdio_node = of_parse_phandle(np, "mii-bus", 0);
1550 dev_err(&pdev->dev, "cannot find mdio node phandle");
1554 smi->ext_mbus = of_mdio_find_bus(mdio_node);
1555 if (!smi->ext_mbus) {
1556 dev_info(&pdev->dev,
1557 "cannot find mdio bus from bus handle (yet)");
1564 if (!gpio_is_valid(sck) || !gpio_is_valid(sda)) {
1566 dev_err(&pdev->dev, "gpios missing in devictree\n");
1569 return -EPROBE_DEFER;
1573 smi->gpio_sda = sda;
1574 smi->gpio_sck = sck;
1575 smi->reset = devm_reset_control_get(&pdev->dev, "switch");
1576 if (!IS_ERR(smi->reset))
1577 smi->hw_reset = rtl8366_smi_reset;
1582 static inline int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
1588 int rtl8366_smi_probe_plat(struct platform_device *pdev, struct rtl8366_smi *smi)
1590 struct rtl8366_platform_data *pdata = pdev->dev.platform_data;
1592 if (!pdev->dev.platform_data) {
1593 dev_err(&pdev->dev, "no platform data specified\n");
1597 smi->gpio_sda = pdata->gpio_sda;
1598 smi->gpio_sck = pdata->gpio_sck;
1599 smi->hw_reset = pdata->hw_reset;
1605 struct rtl8366_smi *rtl8366_smi_probe(struct platform_device *pdev)
1607 struct rtl8366_smi *smi;
1610 smi = rtl8366_smi_alloc(&pdev->dev);
1614 if (pdev->dev.of_node)
1615 err = rtl8366_smi_probe_of(pdev, smi);
1617 err = rtl8366_smi_probe_plat(pdev, smi);
1626 return ERR_PTR(err);
1628 EXPORT_SYMBOL_GPL(rtl8366_smi_probe);
1630 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
1631 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1632 MODULE_LICENSE("GPL v2");