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>
24 #ifdef CONFIG_RTL8366_SMI_DEBUG_FS
25 #include <linux/debugfs.h>
28 #include "rtl8366_smi.h"
30 #define RTL8366_SMI_ACK_RETRY_COUNT 5
32 #define RTL8366_SMI_HW_STOP_DELAY 25 /* msecs */
33 #define RTL8366_SMI_HW_START_DELAY 100 /* msecs */
35 static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
37 ndelay(smi->clk_delay);
40 static void rtl8366_smi_start(struct rtl8366_smi *smi)
42 unsigned int sda = smi->gpio_sda;
43 unsigned int sck = smi->gpio_sck;
46 * Set GPIO pins to output mode, with initial state:
49 gpio_direction_output(sck, 0);
50 gpio_direction_output(sda, 1);
51 rtl8366_smi_clk_delay(smi);
53 /* CLK 1: 0 -> 1, 1 -> 0 */
54 gpio_set_value(sck, 1);
55 rtl8366_smi_clk_delay(smi);
56 gpio_set_value(sck, 0);
57 rtl8366_smi_clk_delay(smi);
60 gpio_set_value(sck, 1);
61 rtl8366_smi_clk_delay(smi);
62 gpio_set_value(sda, 0);
63 rtl8366_smi_clk_delay(smi);
64 gpio_set_value(sck, 0);
65 rtl8366_smi_clk_delay(smi);
66 gpio_set_value(sda, 1);
69 static void rtl8366_smi_stop(struct rtl8366_smi *smi)
71 unsigned int sda = smi->gpio_sda;
72 unsigned int sck = smi->gpio_sck;
74 rtl8366_smi_clk_delay(smi);
75 gpio_set_value(sda, 0);
76 gpio_set_value(sck, 1);
77 rtl8366_smi_clk_delay(smi);
78 gpio_set_value(sda, 1);
79 rtl8366_smi_clk_delay(smi);
80 gpio_set_value(sck, 1);
81 rtl8366_smi_clk_delay(smi);
82 gpio_set_value(sck, 0);
83 rtl8366_smi_clk_delay(smi);
84 gpio_set_value(sck, 1);
87 rtl8366_smi_clk_delay(smi);
88 gpio_set_value(sck, 0);
89 rtl8366_smi_clk_delay(smi);
90 gpio_set_value(sck, 1);
92 /* set GPIO pins to input mode */
93 gpio_direction_input(sda);
94 gpio_direction_input(sck);
97 static void rtl8366_smi_write_bits(struct rtl8366_smi *smi, u32 data, u32 len)
99 unsigned int sda = smi->gpio_sda;
100 unsigned int sck = smi->gpio_sck;
102 for (; len > 0; len--) {
103 rtl8366_smi_clk_delay(smi);
106 gpio_set_value(sda, !!(data & ( 1 << (len - 1))));
107 rtl8366_smi_clk_delay(smi);
110 gpio_set_value(sck, 1);
111 rtl8366_smi_clk_delay(smi);
112 gpio_set_value(sck, 0);
116 static void rtl8366_smi_read_bits(struct rtl8366_smi *smi, u32 len, u32 *data)
118 unsigned int sda = smi->gpio_sda;
119 unsigned int sck = smi->gpio_sck;
121 gpio_direction_input(sda);
123 for (*data = 0; len > 0; len--) {
126 rtl8366_smi_clk_delay(smi);
129 gpio_set_value(sck, 1);
130 rtl8366_smi_clk_delay(smi);
131 u = !!gpio_get_value(sda);
132 gpio_set_value(sck, 0);
134 *data |= (u << (len - 1));
137 gpio_direction_output(sda, 0);
140 static int rtl8366_smi_wait_for_ack(struct rtl8366_smi *smi)
148 rtl8366_smi_read_bits(smi, 1, &ack);
152 if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT) {
153 dev_err(smi->parent, "ACK timeout\n");
161 static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
163 rtl8366_smi_write_bits(smi, data, 8);
164 return rtl8366_smi_wait_for_ack(smi);
167 static int rtl8366_smi_write_byte_noack(struct rtl8366_smi *smi, u8 data)
169 rtl8366_smi_write_bits(smi, data, 8);
173 static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
178 rtl8366_smi_read_bits(smi, 8, &t);
182 rtl8366_smi_write_bits(smi, 0x00, 1);
187 static int rtl8366_smi_read_byte1(struct rtl8366_smi *smi, u8 *data)
192 rtl8366_smi_read_bits(smi, 8, &t);
196 rtl8366_smi_write_bits(smi, 0x01, 1);
201 int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
208 spin_lock_irqsave(&smi->lock, flags);
210 rtl8366_smi_start(smi);
212 /* send READ command */
213 ret = rtl8366_smi_write_byte(smi, smi->cmd_read);
218 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
223 ret = rtl8366_smi_write_byte(smi, addr >> 8);
228 rtl8366_smi_read_byte0(smi, &lo);
229 /* read DATA[15:8] */
230 rtl8366_smi_read_byte1(smi, &hi);
232 *data = ((u32) lo) | (((u32) hi) << 8);
237 rtl8366_smi_stop(smi);
238 spin_unlock_irqrestore(&smi->lock, flags);
242 EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
244 static int __rtl8366_smi_write_reg(struct rtl8366_smi *smi,
245 u32 addr, u32 data, bool ack)
250 spin_lock_irqsave(&smi->lock, flags);
252 rtl8366_smi_start(smi);
254 /* send WRITE command */
255 ret = rtl8366_smi_write_byte(smi, smi->cmd_write);
260 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
265 ret = rtl8366_smi_write_byte(smi, addr >> 8);
269 /* write DATA[7:0] */
270 ret = rtl8366_smi_write_byte(smi, data & 0xff);
274 /* write DATA[15:8] */
276 ret = rtl8366_smi_write_byte(smi, data >> 8);
278 ret = rtl8366_smi_write_byte_noack(smi, data >> 8);
285 rtl8366_smi_stop(smi);
286 spin_unlock_irqrestore(&smi->lock, flags);
291 int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
293 return __rtl8366_smi_write_reg(smi, addr, data, true);
295 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
297 int rtl8366_smi_write_reg_noack(struct rtl8366_smi *smi, u32 addr, u32 data)
299 return __rtl8366_smi_write_reg(smi, addr, data, false);
301 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg_noack);
303 int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
308 err = rtl8366_smi_read_reg(smi, addr, &t);
312 err = rtl8366_smi_write_reg(smi, addr, (t & ~mask) | data);
316 EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
318 static int rtl8366_reset(struct rtl8366_smi *smi)
322 msleep(RTL8366_SMI_HW_STOP_DELAY);
323 smi->hw_reset(false);
324 msleep(RTL8366_SMI_HW_START_DELAY);
328 return smi->ops->reset_chip(smi);
331 static int rtl8366_mc_is_used(struct rtl8366_smi *smi, int mc_index, int *used)
337 for (i = 0; i < smi->num_ports; i++) {
340 err = smi->ops->get_mc_index(smi, i, &index);
344 if (mc_index == index) {
353 static int rtl8366_set_vlan(struct rtl8366_smi *smi, int vid, u32 member,
356 struct rtl8366_vlan_4k vlan4k;
360 /* Update the 4K table */
361 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
365 vlan4k.member = member;
366 vlan4k.untag = untag;
368 err = smi->ops->set_vlan_4k(smi, &vlan4k);
372 /* Try to find an existing MC entry for this VID */
373 for (i = 0; i < smi->num_vlan_mc; i++) {
374 struct rtl8366_vlan_mc vlanmc;
376 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
380 if (vid == vlanmc.vid) {
381 /* update the MC entry */
382 vlanmc.member = member;
383 vlanmc.untag = untag;
386 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
394 static int rtl8366_get_pvid(struct rtl8366_smi *smi, int port, int *val)
396 struct rtl8366_vlan_mc vlanmc;
400 err = smi->ops->get_mc_index(smi, port, &index);
404 err = smi->ops->get_vlan_mc(smi, index, &vlanmc);
412 static int rtl8366_set_pvid(struct rtl8366_smi *smi, unsigned port,
415 struct rtl8366_vlan_mc vlanmc;
416 struct rtl8366_vlan_4k vlan4k;
420 /* Try to find an existing MC entry for this VID */
421 for (i = 0; i < smi->num_vlan_mc; i++) {
422 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
426 if (vid == vlanmc.vid) {
427 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
431 err = smi->ops->set_mc_index(smi, port, i);
436 /* We have no MC entry for this VID, try to find an empty one */
437 for (i = 0; i < smi->num_vlan_mc; i++) {
438 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
442 if (vlanmc.vid == 0 && vlanmc.member == 0) {
443 /* Update the entry from the 4K table */
444 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
449 vlanmc.member = vlan4k.member;
450 vlanmc.untag = vlan4k.untag;
451 vlanmc.fid = vlan4k.fid;
452 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
456 err = smi->ops->set_mc_index(smi, port, i);
461 /* MC table is full, try to find an unused entry and replace it */
462 for (i = 0; i < smi->num_vlan_mc; i++) {
465 err = rtl8366_mc_is_used(smi, i, &used);
470 /* Update the entry from the 4K table */
471 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
476 vlanmc.member = vlan4k.member;
477 vlanmc.untag = vlan4k.untag;
478 vlanmc.fid = vlan4k.fid;
479 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
483 err = smi->ops->set_mc_index(smi, port, i);
489 "all VLAN member configurations are in use\n");
494 int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
498 err = smi->ops->enable_vlan(smi, enable);
502 smi->vlan_enabled = enable;
505 smi->vlan4k_enabled = 0;
506 err = smi->ops->enable_vlan4k(smi, enable);
511 EXPORT_SYMBOL_GPL(rtl8366_enable_vlan);
513 static int rtl8366_enable_vlan4k(struct rtl8366_smi *smi, int enable)
518 err = smi->ops->enable_vlan(smi, enable);
522 smi->vlan_enabled = enable;
525 err = smi->ops->enable_vlan4k(smi, enable);
529 smi->vlan4k_enabled = enable;
533 int rtl8366_enable_all_ports(struct rtl8366_smi *smi, int enable)
538 for (port = 0; port < smi->num_ports; port++) {
539 err = smi->ops->enable_port(smi, port, enable);
546 EXPORT_SYMBOL_GPL(rtl8366_enable_all_ports);
548 int rtl8366_reset_vlan(struct rtl8366_smi *smi)
550 struct rtl8366_vlan_mc vlanmc;
554 rtl8366_enable_vlan(smi, 0);
555 rtl8366_enable_vlan4k(smi, 0);
557 /* clear VLAN member configurations */
563 for (i = 0; i < smi->num_vlan_mc; i++) {
564 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
571 EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
573 static int rtl8366_init_vlan(struct rtl8366_smi *smi)
578 err = rtl8366_reset_vlan(smi);
582 for (port = 0; port < smi->num_ports; port++) {
585 if (port == smi->cpu_port)
586 mask = (1 << smi->num_ports) - 1;
588 mask = (1 << port) | (1 << smi->cpu_port);
590 err = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0);
594 err = rtl8366_set_pvid(smi, port, (port + 1));
599 return rtl8366_enable_vlan(smi, 1);
602 #ifdef CONFIG_RTL8366_SMI_DEBUG_FS
603 int rtl8366_debugfs_open(struct inode *inode, struct file *file)
605 file->private_data = inode->i_private;
608 EXPORT_SYMBOL_GPL(rtl8366_debugfs_open);
610 static ssize_t rtl8366_read_debugfs_vlan_mc(struct file *file,
611 char __user *user_buf,
612 size_t count, loff_t *ppos)
614 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
616 char *buf = smi->buf;
618 len += snprintf(buf + len, sizeof(smi->buf) - len,
619 "%2s %6s %4s %6s %6s %3s\n",
620 "id", "vid","prio", "member", "untag", "fid");
622 for (i = 0; i < smi->num_vlan_mc; ++i) {
623 struct rtl8366_vlan_mc vlanmc;
625 smi->ops->get_vlan_mc(smi, i, &vlanmc);
627 len += snprintf(buf + len, sizeof(smi->buf) - len,
628 "%2d %6d %4d 0x%04x 0x%04x %3d\n",
629 i, vlanmc.vid, vlanmc.priority,
630 vlanmc.member, vlanmc.untag, vlanmc.fid);
633 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
636 #define RTL8366_VLAN4K_PAGE_SIZE 64
637 #define RTL8366_VLAN4K_NUM_PAGES (4096 / RTL8366_VLAN4K_PAGE_SIZE)
639 static ssize_t rtl8366_read_debugfs_vlan_4k(struct file *file,
640 char __user *user_buf,
641 size_t count, loff_t *ppos)
643 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
646 char *buf = smi->buf;
648 if (smi->dbg_vlan_4k_page >= RTL8366_VLAN4K_NUM_PAGES) {
649 len += snprintf(buf + len, sizeof(smi->buf) - len,
650 "invalid page: %u\n", smi->dbg_vlan_4k_page);
651 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
654 len += snprintf(buf + len, sizeof(smi->buf) - len,
656 "vid", "member", "untag", "fid");
658 offset = RTL8366_VLAN4K_PAGE_SIZE * smi->dbg_vlan_4k_page;
659 for (i = 0; i < RTL8366_VLAN4K_PAGE_SIZE; i++) {
660 struct rtl8366_vlan_4k vlan4k;
662 smi->ops->get_vlan_4k(smi, offset + i, &vlan4k);
664 len += snprintf(buf + len, sizeof(smi->buf) - len,
665 "%4d 0x%04x 0x%04x %3d\n",
666 vlan4k.vid, vlan4k.member,
667 vlan4k.untag, vlan4k.fid);
670 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
673 static ssize_t rtl8366_read_debugfs_pvid(struct file *file,
674 char __user *user_buf,
675 size_t count, loff_t *ppos)
677 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
678 char *buf = smi->buf;
682 len += snprintf(buf + len, sizeof(smi->buf) - len, "%4s %4s\n",
685 for (i = 0; i < smi->num_ports; i++) {
689 err = rtl8366_get_pvid(smi, i, &pvid);
691 len += snprintf(buf + len, sizeof(smi->buf) - len,
694 len += snprintf(buf + len, sizeof(smi->buf) - len,
695 "%4d %4d\n", i, pvid);
698 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
701 static ssize_t rtl8366_read_debugfs_reg(struct file *file,
702 char __user *user_buf,
703 size_t count, loff_t *ppos)
705 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
706 u32 t, reg = smi->dbg_reg;
708 char *buf = smi->buf;
710 memset(buf, '\0', sizeof(smi->buf));
712 err = rtl8366_smi_read_reg(smi, reg, &t);
714 len += snprintf(buf, sizeof(smi->buf),
715 "Read failed (reg: 0x%04x)\n", reg);
716 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
719 len += snprintf(buf, sizeof(smi->buf), "reg = 0x%04x, val = 0x%04x\n",
722 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
725 static ssize_t rtl8366_write_debugfs_reg(struct file *file,
726 const char __user *user_buf,
727 size_t count, loff_t *ppos)
729 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
731 u32 reg = smi->dbg_reg;
734 char *buf = smi->buf;
736 len = min(count, sizeof(smi->buf) - 1);
737 if (copy_from_user(buf, user_buf, len)) {
738 dev_err(smi->parent, "copy from user failed\n");
743 if (len > 0 && buf[len - 1] == '\n')
747 if (kstrtoul(buf, 16, &data)) {
748 dev_err(smi->parent, "Invalid reg value %s\n", buf);
750 err = rtl8366_smi_write_reg(smi, reg, data);
753 "writing reg 0x%04x val 0x%04lx failed\n",
761 static ssize_t rtl8366_read_debugfs_mibs(struct file *file,
762 char __user *user_buf,
763 size_t count, loff_t *ppos)
765 struct rtl8366_smi *smi = file->private_data;
767 char *buf = smi->buf;
769 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s",
772 for (i = 0; i < smi->num_ports; i++) {
775 snprintf(port_buf, sizeof(port_buf), "Port %d", i);
776 len += snprintf(buf + len, sizeof(smi->buf) - len, " %12s",
779 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
781 for (i = 0; i < smi->num_mib_counters; i++) {
782 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s ",
783 smi->mib_counters[i].name);
784 for (j = 0; j < smi->num_ports; j++) {
785 unsigned long long counter = 0;
787 if (!smi->ops->get_mib_counter(smi, i, j, &counter))
788 len += snprintf(buf + len,
789 sizeof(smi->buf) - len,
792 len += snprintf(buf + len,
793 sizeof(smi->buf) - len,
796 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
799 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
802 static const struct file_operations fops_rtl8366_regs = {
803 .read = rtl8366_read_debugfs_reg,
804 .write = rtl8366_write_debugfs_reg,
805 .open = rtl8366_debugfs_open,
809 static const struct file_operations fops_rtl8366_vlan_mc = {
810 .read = rtl8366_read_debugfs_vlan_mc,
811 .open = rtl8366_debugfs_open,
815 static const struct file_operations fops_rtl8366_vlan_4k = {
816 .read = rtl8366_read_debugfs_vlan_4k,
817 .open = rtl8366_debugfs_open,
821 static const struct file_operations fops_rtl8366_pvid = {
822 .read = rtl8366_read_debugfs_pvid,
823 .open = rtl8366_debugfs_open,
827 static const struct file_operations fops_rtl8366_mibs = {
828 .read = rtl8366_read_debugfs_mibs,
829 .open = rtl8366_debugfs_open,
833 static void rtl8366_debugfs_init(struct rtl8366_smi *smi)
838 if (!smi->debugfs_root)
839 smi->debugfs_root = debugfs_create_dir(dev_name(smi->parent),
842 if (!smi->debugfs_root) {
843 dev_err(smi->parent, "Unable to create debugfs dir\n");
846 root = smi->debugfs_root;
848 node = debugfs_create_x16("reg", S_IRUGO | S_IWUSR, root,
851 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
856 node = debugfs_create_file("val", S_IRUGO | S_IWUSR, root, smi,
859 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
864 node = debugfs_create_file("vlan_mc", S_IRUSR, root, smi,
865 &fops_rtl8366_vlan_mc);
867 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
872 node = debugfs_create_u8("vlan_4k_page", S_IRUGO | S_IWUSR, root,
873 &smi->dbg_vlan_4k_page);
875 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
880 node = debugfs_create_file("vlan_4k", S_IRUSR, root, smi,
881 &fops_rtl8366_vlan_4k);
883 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
888 node = debugfs_create_file("pvid", S_IRUSR, root, smi,
891 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
896 node = debugfs_create_file("mibs", S_IRUSR, smi->debugfs_root, smi,
899 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
903 static void rtl8366_debugfs_remove(struct rtl8366_smi *smi)
905 if (smi->debugfs_root) {
906 debugfs_remove_recursive(smi->debugfs_root);
907 smi->debugfs_root = NULL;
911 static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
912 static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
913 #endif /* CONFIG_RTL8366_SMI_DEBUG_FS */
915 static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
919 smi->mii_bus = mdiobus_alloc();
920 if (smi->mii_bus == NULL) {
925 smi->mii_bus->priv = (void *) smi;
926 smi->mii_bus->name = dev_name(smi->parent);
927 smi->mii_bus->read = smi->ops->mii_read;
928 smi->mii_bus->write = smi->ops->mii_write;
929 snprintf(smi->mii_bus->id, MII_BUS_ID_SIZE, "%s",
930 dev_name(smi->parent));
931 smi->mii_bus->parent = smi->parent;
932 smi->mii_bus->phy_mask = ~(0x1f);
933 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
936 smi->mii_bus->irq = smi->mii_irq;
937 for (i = 0; i < PHY_MAX_ADDR; i++)
938 smi->mii_irq[i] = PHY_POLL;
942 ret = mdiobus_register(smi->mii_bus);
949 mdiobus_free(smi->mii_bus);
954 static void rtl8366_smi_mii_cleanup(struct rtl8366_smi *smi)
956 mdiobus_unregister(smi->mii_bus);
957 mdiobus_free(smi->mii_bus);
960 int rtl8366_sw_reset_switch(struct switch_dev *dev)
962 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
965 err = rtl8366_reset(smi);
969 err = smi->ops->setup(smi);
973 err = rtl8366_reset_vlan(smi);
977 err = rtl8366_enable_vlan(smi, 1);
981 return rtl8366_enable_all_ports(smi, 1);
983 EXPORT_SYMBOL_GPL(rtl8366_sw_reset_switch);
985 int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
987 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
988 return rtl8366_get_pvid(smi, port, val);
990 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid);
992 int rtl8366_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
994 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
995 return rtl8366_set_pvid(smi, port, val);
997 EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid);
999 int rtl8366_sw_get_port_mib(struct switch_dev *dev,
1000 const struct switch_attr *attr,
1001 struct switch_val *val)
1003 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1005 unsigned long long counter = 0;
1006 char *buf = smi->buf;
1008 if (val->port_vlan >= smi->num_ports)
1011 len += snprintf(buf + len, sizeof(smi->buf) - len,
1012 "Port %d MIB counters\n",
1015 for (i = 0; i < smi->num_mib_counters; ++i) {
1016 len += snprintf(buf + len, sizeof(smi->buf) - len,
1017 "%-36s: ", smi->mib_counters[i].name);
1018 if (!smi->ops->get_mib_counter(smi, i, val->port_vlan,
1020 len += snprintf(buf + len, sizeof(smi->buf) - len,
1023 len += snprintf(buf + len, sizeof(smi->buf) - len,
1031 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
1033 int rtl8366_sw_get_port_stats(struct switch_dev *dev, int port,
1034 struct switch_port_stats *stats,
1035 int txb_id, int rxb_id)
1037 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1038 unsigned long long counter = 0;
1041 if (port >= smi->num_ports)
1044 ret = smi->ops->get_mib_counter(smi, txb_id, port, &counter);
1048 stats->tx_bytes = counter;
1050 ret = smi->ops->get_mib_counter(smi, rxb_id, port, &counter);
1054 stats->rx_bytes = counter;
1058 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_stats);
1060 int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
1061 const struct switch_attr *attr,
1062 struct switch_val *val)
1066 struct rtl8366_vlan_4k vlan4k;
1067 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1068 char *buf = smi->buf;
1071 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1074 memset(buf, '\0', sizeof(smi->buf));
1076 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1080 len += snprintf(buf + len, sizeof(smi->buf) - len,
1081 "VLAN %d: Ports: '", vlan4k.vid);
1083 for (i = 0; i < smi->num_ports; i++) {
1084 if (!(vlan4k.member & (1 << i)))
1087 len += snprintf(buf + len, sizeof(smi->buf) - len, "%d%s", i,
1088 (vlan4k.untag & (1 << i)) ? "" : "t");
1091 len += snprintf(buf + len, sizeof(smi->buf) - len,
1092 "', members=%04x, untag=%04x, fid=%u",
1093 vlan4k.member, vlan4k.untag, vlan4k.fid);
1100 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info);
1102 int rtl8366_sw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
1104 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1105 struct switch_port *port;
1106 struct rtl8366_vlan_4k vlan4k;
1109 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1112 smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1114 port = &val->value.ports[0];
1116 for (i = 0; i < smi->num_ports; i++) {
1117 if (!(vlan4k.member & BIT(i)))
1121 port->flags = (vlan4k.untag & BIT(i)) ?
1122 0 : BIT(SWITCH_PORT_FLAG_TAGGED);
1128 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports);
1130 int rtl8366_sw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
1132 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1133 struct switch_port *port;
1139 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1142 port = &val->value.ports[0];
1143 for (i = 0; i < val->len; i++, port++) {
1145 member |= BIT(port->id);
1147 if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED)))
1148 untag |= BIT(port->id);
1151 * To ensure that we have a valid MC entry for this VLAN,
1152 * initialize the port VLAN ID here.
1154 err = rtl8366_get_pvid(smi, port->id, &pvid);
1158 err = rtl8366_set_pvid(smi, port->id, val->port_vlan);
1164 return rtl8366_set_vlan(smi, val->port_vlan, member, untag, 0);
1166 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports);
1168 int rtl8366_sw_get_vlan_fid(struct switch_dev *dev,
1169 const struct switch_attr *attr,
1170 struct switch_val *val)
1172 struct rtl8366_vlan_4k vlan4k;
1173 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1176 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1179 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1183 val->value.i = vlan4k.fid;
1187 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_fid);
1189 int rtl8366_sw_set_vlan_fid(struct switch_dev *dev,
1190 const struct switch_attr *attr,
1191 struct switch_val *val)
1193 struct rtl8366_vlan_4k vlan4k;
1194 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1197 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1200 if (val->value.i < 0 || val->value.i > attr->max)
1203 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1207 return rtl8366_set_vlan(smi, val->port_vlan,
1212 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_fid);
1214 int rtl8366_sw_get_vlan_enable(struct switch_dev *dev,
1215 const struct switch_attr *attr,
1216 struct switch_val *val)
1218 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1224 val->value.i = smi->vlan_enabled;
1226 val->value.i = smi->vlan4k_enabled;
1230 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_enable);
1232 int rtl8366_sw_set_vlan_enable(struct switch_dev *dev,
1233 const struct switch_attr *attr,
1234 struct switch_val *val)
1236 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1243 err = rtl8366_enable_vlan(smi, val->value.i);
1245 err = rtl8366_enable_vlan4k(smi, val->value.i);
1249 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_enable);
1251 struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
1253 struct rtl8366_smi *smi;
1257 smi = kzalloc(sizeof(*smi), GFP_KERNEL);
1259 dev_err(parent, "no memory for private data\n");
1263 smi->parent = parent;
1266 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
1268 static int __rtl8366_smi_init(struct rtl8366_smi *smi, const char *name)
1272 err = gpio_request(smi->gpio_sda, name);
1274 printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
1275 smi->gpio_sda, err);
1279 err = gpio_request(smi->gpio_sck, name);
1281 printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
1282 smi->gpio_sck, err);
1286 spin_lock_init(&smi->lock);
1288 /* start the switch */
1289 if (smi->hw_reset) {
1290 smi->hw_reset(false);
1291 msleep(RTL8366_SMI_HW_START_DELAY);
1297 gpio_free(smi->gpio_sda);
1302 static void __rtl8366_smi_cleanup(struct rtl8366_smi *smi)
1305 smi->hw_reset(true);
1307 gpio_free(smi->gpio_sck);
1308 gpio_free(smi->gpio_sda);
1311 enum rtl8366_type rtl8366_smi_detect(struct rtl8366_platform_data *pdata)
1313 static struct rtl8366_smi smi;
1314 enum rtl8366_type type = RTL8366_TYPE_UNKNOWN;
1317 memset(&smi, 0, sizeof(smi));
1318 smi.gpio_sda = pdata->gpio_sda;
1319 smi.gpio_sck = pdata->gpio_sck;
1321 smi.cmd_read = 0xa9;
1322 smi.cmd_write = 0xa8;
1324 if (__rtl8366_smi_init(&smi, "rtl8366"))
1327 if (rtl8366_smi_read_reg(&smi, 0x5c, ®))
1332 printk("Found an RTL8366S switch\n");
1333 type = RTL8366_TYPE_S;
1336 printk("Found an RTL8366RB switch\n");
1337 type = RTL8366_TYPE_RB;
1340 printk("Found an Unknown RTL8366 switch (id=0x%04x)\n", reg);
1345 __rtl8366_smi_cleanup(&smi);
1350 int rtl8366_smi_init(struct rtl8366_smi *smi)
1357 err = __rtl8366_smi_init(smi, dev_name(smi->parent));
1361 dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
1362 smi->gpio_sda, smi->gpio_sck);
1364 err = smi->ops->detect(smi);
1366 dev_err(smi->parent, "chip detection failed, err=%d\n", err);
1370 err = rtl8366_reset(smi);
1374 err = smi->ops->setup(smi);
1376 dev_err(smi->parent, "chip setup failed, err=%d\n", err);
1380 err = rtl8366_init_vlan(smi);
1382 dev_err(smi->parent, "VLAN initialization failed, err=%d\n",
1387 err = rtl8366_enable_all_ports(smi, 1);
1391 err = rtl8366_smi_mii_init(smi);
1395 rtl8366_debugfs_init(smi);
1400 __rtl8366_smi_cleanup(smi);
1404 EXPORT_SYMBOL_GPL(rtl8366_smi_init);
1406 void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
1408 rtl8366_debugfs_remove(smi);
1409 rtl8366_smi_mii_cleanup(smi);
1410 __rtl8366_smi_cleanup(smi);
1412 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
1415 int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
1417 int sck = of_get_named_gpio(pdev->dev.of_node, "gpio-sck", 0);
1418 int sda = of_get_named_gpio(pdev->dev.of_node, "gpio-sda", 0);
1420 if (!gpio_is_valid(sck) || !gpio_is_valid(sda)) {
1421 dev_err(&pdev->dev, "gpios missing in devictree\n");
1425 smi->gpio_sda = sda;
1426 smi->gpio_sck = sck;
1431 static inline int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
1437 int rtl8366_smi_probe_plat(struct platform_device *pdev, struct rtl8366_smi *smi)
1439 struct rtl8366_platform_data *pdata = pdev->dev.platform_data;
1441 if (!pdev->dev.platform_data) {
1442 dev_err(&pdev->dev, "no platform data specified\n");
1446 smi->gpio_sda = pdata->gpio_sda;
1447 smi->gpio_sck = pdata->gpio_sck;
1448 smi->hw_reset = pdata->hw_reset;
1454 struct rtl8366_smi *rtl8366_smi_probe(struct platform_device *pdev)
1456 struct rtl8366_smi *smi;
1459 smi = rtl8366_smi_alloc(&pdev->dev);
1463 if (pdev->dev.of_node)
1464 err = rtl8366_smi_probe_of(pdev, smi);
1466 err = rtl8366_smi_probe_plat(pdev, smi);
1477 EXPORT_SYMBOL_GPL(rtl8366_smi_probe);
1479 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
1480 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1481 MODULE_LICENSE("GPL v2");