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 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 EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg
);
245 static int __rtl8366_smi_write_reg(struct rtl8366_smi
*smi
,
246 u32 addr
, u32 data
, bool ack
)
251 spin_lock_irqsave(&smi
->lock
, flags
);
253 rtl8366_smi_start(smi
);
255 /* send WRITE command */
256 ret
= rtl8366_smi_write_byte(smi
, smi
->cmd_write
);
261 ret
= rtl8366_smi_write_byte(smi
, addr
& 0xff);
266 ret
= rtl8366_smi_write_byte(smi
, addr
>> 8);
270 /* write DATA[7:0] */
271 ret
= rtl8366_smi_write_byte(smi
, data
& 0xff);
275 /* write DATA[15:8] */
277 ret
= rtl8366_smi_write_byte(smi
, data
>> 8);
279 ret
= rtl8366_smi_write_byte_noack(smi
, data
>> 8);
286 rtl8366_smi_stop(smi
);
287 spin_unlock_irqrestore(&smi
->lock
, flags
);
292 int rtl8366_smi_write_reg(struct rtl8366_smi
*smi
, u32 addr
, u32 data
)
294 return __rtl8366_smi_write_reg(smi
, addr
, data
, true);
296 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg
);
298 int rtl8366_smi_write_reg_noack(struct rtl8366_smi
*smi
, u32 addr
, u32 data
)
300 return __rtl8366_smi_write_reg(smi
, addr
, data
, false);
302 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg_noack
);
304 int rtl8366_smi_rmwr(struct rtl8366_smi
*smi
, u32 addr
, u32 mask
, u32 data
)
309 err
= rtl8366_smi_read_reg(smi
, addr
, &t
);
313 err
= rtl8366_smi_write_reg(smi
, addr
, (t
& ~mask
) | data
);
317 EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr
);
319 static int rtl8366_reset(struct rtl8366_smi
*smi
)
323 msleep(RTL8366_SMI_HW_STOP_DELAY
);
324 smi
->hw_reset(false);
325 msleep(RTL8366_SMI_HW_START_DELAY
);
329 return smi
->ops
->reset_chip(smi
);
332 static int rtl8366_mc_is_used(struct rtl8366_smi
*smi
, int mc_index
, int *used
)
338 for (i
= 0; i
< smi
->num_ports
; i
++) {
341 err
= smi
->ops
->get_mc_index(smi
, i
, &index
);
345 if (mc_index
== index
) {
354 static int rtl8366_set_vlan(struct rtl8366_smi
*smi
, int vid
, u32 member
,
357 struct rtl8366_vlan_4k vlan4k
;
361 /* Update the 4K table */
362 err
= smi
->ops
->get_vlan_4k(smi
, vid
, &vlan4k
);
366 vlan4k
.member
= member
;
367 vlan4k
.untag
= untag
;
369 err
= smi
->ops
->set_vlan_4k(smi
, &vlan4k
);
373 /* Try to find an existing MC entry for this VID */
374 for (i
= 0; i
< smi
->num_vlan_mc
; i
++) {
375 struct rtl8366_vlan_mc vlanmc
;
377 err
= smi
->ops
->get_vlan_mc(smi
, i
, &vlanmc
);
381 if (vid
== vlanmc
.vid
) {
382 /* update the MC entry */
383 vlanmc
.member
= member
;
384 vlanmc
.untag
= untag
;
387 err
= smi
->ops
->set_vlan_mc(smi
, i
, &vlanmc
);
395 static int rtl8366_get_pvid(struct rtl8366_smi
*smi
, int port
, int *val
)
397 struct rtl8366_vlan_mc vlanmc
;
401 err
= smi
->ops
->get_mc_index(smi
, port
, &index
);
405 err
= smi
->ops
->get_vlan_mc(smi
, index
, &vlanmc
);
413 static int rtl8366_set_pvid(struct rtl8366_smi
*smi
, unsigned port
,
416 struct rtl8366_vlan_mc vlanmc
;
417 struct rtl8366_vlan_4k vlan4k
;
421 /* Try to find an existing MC entry for this VID */
422 for (i
= 0; i
< smi
->num_vlan_mc
; i
++) {
423 err
= smi
->ops
->get_vlan_mc(smi
, i
, &vlanmc
);
427 if (vid
== vlanmc
.vid
) {
428 err
= smi
->ops
->set_vlan_mc(smi
, i
, &vlanmc
);
432 err
= smi
->ops
->set_mc_index(smi
, port
, i
);
437 /* We have no MC entry for this VID, try to find an empty one */
438 for (i
= 0; i
< smi
->num_vlan_mc
; i
++) {
439 err
= smi
->ops
->get_vlan_mc(smi
, i
, &vlanmc
);
443 if (vlanmc
.vid
== 0 && vlanmc
.member
== 0) {
444 /* Update the entry from the 4K table */
445 err
= smi
->ops
->get_vlan_4k(smi
, vid
, &vlan4k
);
450 vlanmc
.member
= vlan4k
.member
;
451 vlanmc
.untag
= vlan4k
.untag
;
452 vlanmc
.fid
= vlan4k
.fid
;
453 err
= smi
->ops
->set_vlan_mc(smi
, i
, &vlanmc
);
457 err
= smi
->ops
->set_mc_index(smi
, port
, i
);
462 /* MC table is full, try to find an unused entry and replace it */
463 for (i
= 0; i
< smi
->num_vlan_mc
; i
++) {
466 err
= rtl8366_mc_is_used(smi
, i
, &used
);
471 /* Update the entry from the 4K table */
472 err
= smi
->ops
->get_vlan_4k(smi
, vid
, &vlan4k
);
477 vlanmc
.member
= vlan4k
.member
;
478 vlanmc
.untag
= vlan4k
.untag
;
479 vlanmc
.fid
= vlan4k
.fid
;
480 err
= smi
->ops
->set_vlan_mc(smi
, i
, &vlanmc
);
484 err
= smi
->ops
->set_mc_index(smi
, port
, i
);
490 "all VLAN member configurations are in use\n");
495 int rtl8366_enable_vlan(struct rtl8366_smi
*smi
, int enable
)
499 err
= smi
->ops
->enable_vlan(smi
, enable
);
503 smi
->vlan_enabled
= enable
;
506 smi
->vlan4k_enabled
= 0;
507 err
= smi
->ops
->enable_vlan4k(smi
, enable
);
512 EXPORT_SYMBOL_GPL(rtl8366_enable_vlan
);
514 static int rtl8366_enable_vlan4k(struct rtl8366_smi
*smi
, int enable
)
519 err
= smi
->ops
->enable_vlan(smi
, enable
);
523 smi
->vlan_enabled
= enable
;
526 err
= smi
->ops
->enable_vlan4k(smi
, enable
);
530 smi
->vlan4k_enabled
= enable
;
534 int rtl8366_enable_all_ports(struct rtl8366_smi
*smi
, int enable
)
539 for (port
= 0; port
< smi
->num_ports
; port
++) {
540 err
= smi
->ops
->enable_port(smi
, port
, enable
);
547 EXPORT_SYMBOL_GPL(rtl8366_enable_all_ports
);
549 int rtl8366_reset_vlan(struct rtl8366_smi
*smi
)
551 struct rtl8366_vlan_mc vlanmc
;
555 rtl8366_enable_vlan(smi
, 0);
556 rtl8366_enable_vlan4k(smi
, 0);
558 /* clear VLAN member configurations */
564 for (i
= 0; i
< smi
->num_vlan_mc
; i
++) {
565 err
= smi
->ops
->set_vlan_mc(smi
, i
, &vlanmc
);
572 EXPORT_SYMBOL_GPL(rtl8366_reset_vlan
);
574 static int rtl8366_init_vlan(struct rtl8366_smi
*smi
)
579 err
= rtl8366_reset_vlan(smi
);
583 for (port
= 0; port
< smi
->num_ports
; port
++) {
586 if (port
== smi
->cpu_port
)
587 mask
= (1 << smi
->num_ports
) - 1;
589 mask
= (1 << port
) | (1 << smi
->cpu_port
);
591 err
= rtl8366_set_vlan(smi
, (port
+ 1), mask
, mask
, 0);
595 err
= rtl8366_set_pvid(smi
, port
, (port
+ 1));
600 return rtl8366_enable_vlan(smi
, 1);
603 #ifdef CONFIG_RTL8366_SMI_DEBUG_FS
604 int rtl8366_debugfs_open(struct inode
*inode
, struct file
*file
)
606 file
->private_data
= inode
->i_private
;
609 EXPORT_SYMBOL_GPL(rtl8366_debugfs_open
);
611 static ssize_t
rtl8366_read_debugfs_vlan_mc(struct file
*file
,
612 char __user
*user_buf
,
613 size_t count
, loff_t
*ppos
)
615 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
617 char *buf
= smi
->buf
;
619 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
620 "%2s %6s %4s %6s %6s %3s\n",
621 "id", "vid","prio", "member", "untag", "fid");
623 for (i
= 0; i
< smi
->num_vlan_mc
; ++i
) {
624 struct rtl8366_vlan_mc vlanmc
;
626 smi
->ops
->get_vlan_mc(smi
, i
, &vlanmc
);
628 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
629 "%2d %6d %4d 0x%04x 0x%04x %3d\n",
630 i
, vlanmc
.vid
, vlanmc
.priority
,
631 vlanmc
.member
, vlanmc
.untag
, vlanmc
.fid
);
634 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
637 #define RTL8366_VLAN4K_PAGE_SIZE 64
638 #define RTL8366_VLAN4K_NUM_PAGES (4096 / RTL8366_VLAN4K_PAGE_SIZE)
640 static ssize_t
rtl8366_read_debugfs_vlan_4k(struct file
*file
,
641 char __user
*user_buf
,
642 size_t count
, loff_t
*ppos
)
644 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
647 char *buf
= smi
->buf
;
649 if (smi
->dbg_vlan_4k_page
>= RTL8366_VLAN4K_NUM_PAGES
) {
650 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
651 "invalid page: %u\n", smi
->dbg_vlan_4k_page
);
652 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
655 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
657 "vid", "member", "untag", "fid");
659 offset
= RTL8366_VLAN4K_PAGE_SIZE
* smi
->dbg_vlan_4k_page
;
660 for (i
= 0; i
< RTL8366_VLAN4K_PAGE_SIZE
; i
++) {
661 struct rtl8366_vlan_4k vlan4k
;
663 smi
->ops
->get_vlan_4k(smi
, offset
+ i
, &vlan4k
);
665 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
666 "%4d 0x%04x 0x%04x %3d\n",
667 vlan4k
.vid
, vlan4k
.member
,
668 vlan4k
.untag
, vlan4k
.fid
);
671 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
674 static ssize_t
rtl8366_read_debugfs_pvid(struct file
*file
,
675 char __user
*user_buf
,
676 size_t count
, loff_t
*ppos
)
678 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
679 char *buf
= smi
->buf
;
683 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "%4s %4s\n",
686 for (i
= 0; i
< smi
->num_ports
; i
++) {
690 err
= rtl8366_get_pvid(smi
, i
, &pvid
);
692 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
695 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
696 "%4d %4d\n", i
, pvid
);
699 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
702 static ssize_t
rtl8366_read_debugfs_reg(struct file
*file
,
703 char __user
*user_buf
,
704 size_t count
, loff_t
*ppos
)
706 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
707 u32 t
, reg
= smi
->dbg_reg
;
709 char *buf
= smi
->buf
;
711 memset(buf
, '\0', sizeof(smi
->buf
));
713 err
= rtl8366_smi_read_reg(smi
, reg
, &t
);
715 len
+= snprintf(buf
, sizeof(smi
->buf
),
716 "Read failed (reg: 0x%04x)\n", reg
);
717 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
720 len
+= snprintf(buf
, sizeof(smi
->buf
), "reg = 0x%04x, val = 0x%04x\n",
723 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
726 static ssize_t
rtl8366_write_debugfs_reg(struct file
*file
,
727 const char __user
*user_buf
,
728 size_t count
, loff_t
*ppos
)
730 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
732 u32 reg
= smi
->dbg_reg
;
735 char *buf
= smi
->buf
;
737 len
= min(count
, sizeof(smi
->buf
) - 1);
738 if (copy_from_user(buf
, user_buf
, len
)) {
739 dev_err(smi
->parent
, "copy from user failed\n");
744 if (len
> 0 && buf
[len
- 1] == '\n')
748 if (kstrtoul(buf
, 16, &data
)) {
749 dev_err(smi
->parent
, "Invalid reg value %s\n", buf
);
751 err
= rtl8366_smi_write_reg(smi
, reg
, data
);
754 "writing reg 0x%04x val 0x%04lx failed\n",
762 static ssize_t
rtl8366_read_debugfs_mibs(struct file
*file
,
763 char __user
*user_buf
,
764 size_t count
, loff_t
*ppos
)
766 struct rtl8366_smi
*smi
= file
->private_data
;
768 char *buf
= smi
->buf
;
770 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "%-36s",
773 for (i
= 0; i
< smi
->num_ports
; i
++) {
776 snprintf(port_buf
, sizeof(port_buf
), "Port %d", i
);
777 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, " %12s",
780 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "\n");
782 for (i
= 0; i
< smi
->num_mib_counters
; i
++) {
783 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "%-36s ",
784 smi
->mib_counters
[i
].name
);
785 for (j
= 0; j
< smi
->num_ports
; j
++) {
786 unsigned long long counter
= 0;
788 if (!smi
->ops
->get_mib_counter(smi
, i
, j
, &counter
))
789 len
+= snprintf(buf
+ len
,
790 sizeof(smi
->buf
) - len
,
793 len
+= snprintf(buf
+ len
,
794 sizeof(smi
->buf
) - len
,
797 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "\n");
800 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
803 static const struct file_operations fops_rtl8366_regs
= {
804 .read
= rtl8366_read_debugfs_reg
,
805 .write
= rtl8366_write_debugfs_reg
,
806 .open
= rtl8366_debugfs_open
,
810 static const struct file_operations fops_rtl8366_vlan_mc
= {
811 .read
= rtl8366_read_debugfs_vlan_mc
,
812 .open
= rtl8366_debugfs_open
,
816 static const struct file_operations fops_rtl8366_vlan_4k
= {
817 .read
= rtl8366_read_debugfs_vlan_4k
,
818 .open
= rtl8366_debugfs_open
,
822 static const struct file_operations fops_rtl8366_pvid
= {
823 .read
= rtl8366_read_debugfs_pvid
,
824 .open
= rtl8366_debugfs_open
,
828 static const struct file_operations fops_rtl8366_mibs
= {
829 .read
= rtl8366_read_debugfs_mibs
,
830 .open
= rtl8366_debugfs_open
,
834 static void rtl8366_debugfs_init(struct rtl8366_smi
*smi
)
839 if (!smi
->debugfs_root
)
840 smi
->debugfs_root
= debugfs_create_dir(dev_name(smi
->parent
),
843 if (!smi
->debugfs_root
) {
844 dev_err(smi
->parent
, "Unable to create debugfs dir\n");
847 root
= smi
->debugfs_root
;
849 node
= debugfs_create_x16("reg", S_IRUGO
| S_IWUSR
, root
,
852 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
857 node
= debugfs_create_file("val", S_IRUGO
| S_IWUSR
, root
, smi
,
860 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
865 node
= debugfs_create_file("vlan_mc", S_IRUSR
, root
, smi
,
866 &fops_rtl8366_vlan_mc
);
868 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
873 node
= debugfs_create_u8("vlan_4k_page", S_IRUGO
| S_IWUSR
, root
,
874 &smi
->dbg_vlan_4k_page
);
876 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
881 node
= debugfs_create_file("vlan_4k", S_IRUSR
, root
, smi
,
882 &fops_rtl8366_vlan_4k
);
884 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
889 node
= debugfs_create_file("pvid", S_IRUSR
, root
, smi
,
892 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
897 node
= debugfs_create_file("mibs", S_IRUSR
, smi
->debugfs_root
, smi
,
900 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
904 static void rtl8366_debugfs_remove(struct rtl8366_smi
*smi
)
906 if (smi
->debugfs_root
) {
907 debugfs_remove_recursive(smi
->debugfs_root
);
908 smi
->debugfs_root
= NULL
;
912 static inline void rtl8366_debugfs_init(struct rtl8366_smi
*smi
) {}
913 static inline void rtl8366_debugfs_remove(struct rtl8366_smi
*smi
) {}
914 #endif /* CONFIG_RTL8366_SMI_DEBUG_FS */
916 static int rtl8366_smi_mii_init(struct rtl8366_smi
*smi
)
921 struct device_node
*np
= NULL
;
923 np
= of_get_child_by_name(smi
->parent
->of_node
, "mdio-bus");
926 smi
->mii_bus
= mdiobus_alloc();
927 if (smi
->mii_bus
== NULL
) {
932 smi
->mii_bus
->priv
= (void *) smi
;
933 smi
->mii_bus
->name
= dev_name(smi
->parent
);
934 smi
->mii_bus
->read
= smi
->ops
->mii_read
;
935 smi
->mii_bus
->write
= smi
->ops
->mii_write
;
936 snprintf(smi
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s",
937 dev_name(smi
->parent
));
938 smi
->mii_bus
->parent
= smi
->parent
;
939 smi
->mii_bus
->phy_mask
= ~(0x1f);
940 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
943 smi
->mii_bus
->irq
= smi
->mii_irq
;
944 for (i
= 0; i
< PHY_MAX_ADDR
; i
++)
945 smi
->mii_irq
[i
] = PHY_POLL
;
951 ret
= of_mdiobus_register(smi
->mii_bus
, np
);
954 ret
= mdiobus_register(smi
->mii_bus
);
962 mdiobus_free(smi
->mii_bus
);
967 static void rtl8366_smi_mii_cleanup(struct rtl8366_smi
*smi
)
969 mdiobus_unregister(smi
->mii_bus
);
970 mdiobus_free(smi
->mii_bus
);
973 int rtl8366_sw_reset_switch(struct switch_dev
*dev
)
975 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
978 err
= rtl8366_reset(smi
);
982 err
= smi
->ops
->setup(smi
);
986 err
= rtl8366_reset_vlan(smi
);
990 err
= rtl8366_enable_vlan(smi
, 1);
994 return rtl8366_enable_all_ports(smi
, 1);
996 EXPORT_SYMBOL_GPL(rtl8366_sw_reset_switch
);
998 int rtl8366_sw_get_port_pvid(struct switch_dev
*dev
, int port
, int *val
)
1000 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1001 return rtl8366_get_pvid(smi
, port
, val
);
1003 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid
);
1005 int rtl8366_sw_set_port_pvid(struct switch_dev
*dev
, int port
, int val
)
1007 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1008 return rtl8366_set_pvid(smi
, port
, val
);
1010 EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid
);
1012 int rtl8366_sw_get_port_mib(struct switch_dev
*dev
,
1013 const struct switch_attr
*attr
,
1014 struct switch_val
*val
)
1016 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1018 unsigned long long counter
= 0;
1019 char *buf
= smi
->buf
;
1021 if (val
->port_vlan
>= smi
->num_ports
)
1024 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1025 "Port %d MIB counters\n",
1028 for (i
= 0; i
< smi
->num_mib_counters
; ++i
) {
1029 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1030 "%-36s: ", smi
->mib_counters
[i
].name
);
1031 if (!smi
->ops
->get_mib_counter(smi
, i
, val
->port_vlan
,
1033 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1036 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1044 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib
);
1046 int rtl8366_sw_get_port_stats(struct switch_dev
*dev
, int port
,
1047 struct switch_port_stats
*stats
,
1048 int txb_id
, int rxb_id
)
1050 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1051 unsigned long long counter
= 0;
1054 if (port
>= smi
->num_ports
)
1057 ret
= smi
->ops
->get_mib_counter(smi
, txb_id
, port
, &counter
);
1061 stats
->tx_bytes
= counter
;
1063 ret
= smi
->ops
->get_mib_counter(smi
, rxb_id
, port
, &counter
);
1067 stats
->rx_bytes
= counter
;
1071 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_stats
);
1073 int rtl8366_sw_get_vlan_info(struct switch_dev
*dev
,
1074 const struct switch_attr
*attr
,
1075 struct switch_val
*val
)
1079 struct rtl8366_vlan_4k vlan4k
;
1080 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1081 char *buf
= smi
->buf
;
1084 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1087 memset(buf
, '\0', sizeof(smi
->buf
));
1089 err
= smi
->ops
->get_vlan_4k(smi
, val
->port_vlan
, &vlan4k
);
1093 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1094 "VLAN %d: Ports: '", vlan4k
.vid
);
1096 for (i
= 0; i
< smi
->num_ports
; i
++) {
1097 if (!(vlan4k
.member
& (1 << i
)))
1100 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "%d%s", i
,
1101 (vlan4k
.untag
& (1 << i
)) ? "" : "t");
1104 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1105 "', members=%04x, untag=%04x, fid=%u",
1106 vlan4k
.member
, vlan4k
.untag
, vlan4k
.fid
);
1113 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info
);
1115 int rtl8366_sw_get_vlan_ports(struct switch_dev
*dev
, struct switch_val
*val
)
1117 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1118 struct switch_port
*port
;
1119 struct rtl8366_vlan_4k vlan4k
;
1122 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1125 smi
->ops
->get_vlan_4k(smi
, val
->port_vlan
, &vlan4k
);
1127 port
= &val
->value
.ports
[0];
1129 for (i
= 0; i
< smi
->num_ports
; i
++) {
1130 if (!(vlan4k
.member
& BIT(i
)))
1134 port
->flags
= (vlan4k
.untag
& BIT(i
)) ?
1135 0 : BIT(SWITCH_PORT_FLAG_TAGGED
);
1141 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports
);
1143 int rtl8366_sw_set_vlan_ports(struct switch_dev
*dev
, struct switch_val
*val
)
1145 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1146 struct switch_port
*port
;
1152 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1155 port
= &val
->value
.ports
[0];
1156 for (i
= 0; i
< val
->len
; i
++, port
++) {
1158 member
|= BIT(port
->id
);
1160 if (!(port
->flags
& BIT(SWITCH_PORT_FLAG_TAGGED
)))
1161 untag
|= BIT(port
->id
);
1164 * To ensure that we have a valid MC entry for this VLAN,
1165 * initialize the port VLAN ID here.
1167 err
= rtl8366_get_pvid(smi
, port
->id
, &pvid
);
1171 err
= rtl8366_set_pvid(smi
, port
->id
, val
->port_vlan
);
1177 return rtl8366_set_vlan(smi
, val
->port_vlan
, member
, untag
, 0);
1179 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports
);
1181 int rtl8366_sw_get_vlan_fid(struct switch_dev
*dev
,
1182 const struct switch_attr
*attr
,
1183 struct switch_val
*val
)
1185 struct rtl8366_vlan_4k vlan4k
;
1186 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1189 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1192 err
= smi
->ops
->get_vlan_4k(smi
, val
->port_vlan
, &vlan4k
);
1196 val
->value
.i
= vlan4k
.fid
;
1200 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_fid
);
1202 int rtl8366_sw_set_vlan_fid(struct switch_dev
*dev
,
1203 const struct switch_attr
*attr
,
1204 struct switch_val
*val
)
1206 struct rtl8366_vlan_4k vlan4k
;
1207 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1210 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1213 if (val
->value
.i
< 0 || val
->value
.i
> attr
->max
)
1216 err
= smi
->ops
->get_vlan_4k(smi
, val
->port_vlan
, &vlan4k
);
1220 return rtl8366_set_vlan(smi
, val
->port_vlan
,
1225 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_fid
);
1227 int rtl8366_sw_get_vlan_enable(struct switch_dev
*dev
,
1228 const struct switch_attr
*attr
,
1229 struct switch_val
*val
)
1231 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1237 val
->value
.i
= smi
->vlan_enabled
;
1239 val
->value
.i
= smi
->vlan4k_enabled
;
1243 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_enable
);
1245 int rtl8366_sw_set_vlan_enable(struct switch_dev
*dev
,
1246 const struct switch_attr
*attr
,
1247 struct switch_val
*val
)
1249 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1256 err
= rtl8366_enable_vlan(smi
, val
->value
.i
);
1258 err
= rtl8366_enable_vlan4k(smi
, val
->value
.i
);
1262 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_enable
);
1264 struct rtl8366_smi
*rtl8366_smi_alloc(struct device
*parent
)
1266 struct rtl8366_smi
*smi
;
1270 smi
= kzalloc(sizeof(*smi
), GFP_KERNEL
);
1272 dev_err(parent
, "no memory for private data\n");
1276 smi
->parent
= parent
;
1279 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc
);
1281 static int __rtl8366_smi_init(struct rtl8366_smi
*smi
, const char *name
)
1285 err
= gpio_request(smi
->gpio_sda
, name
);
1287 printk(KERN_ERR
"rtl8366_smi: gpio_request failed for %u, err=%d\n",
1288 smi
->gpio_sda
, err
);
1292 err
= gpio_request(smi
->gpio_sck
, name
);
1294 printk(KERN_ERR
"rtl8366_smi: gpio_request failed for %u, err=%d\n",
1295 smi
->gpio_sck
, err
);
1299 spin_lock_init(&smi
->lock
);
1301 /* start the switch */
1302 if (smi
->hw_reset
) {
1303 smi
->hw_reset(false);
1304 msleep(RTL8366_SMI_HW_START_DELAY
);
1310 gpio_free(smi
->gpio_sda
);
1315 static void __rtl8366_smi_cleanup(struct rtl8366_smi
*smi
)
1318 smi
->hw_reset(true);
1320 gpio_free(smi
->gpio_sck
);
1321 gpio_free(smi
->gpio_sda
);
1324 enum rtl8366_type
rtl8366_smi_detect(struct rtl8366_platform_data
*pdata
)
1326 static struct rtl8366_smi smi
;
1327 enum rtl8366_type type
= RTL8366_TYPE_UNKNOWN
;
1330 memset(&smi
, 0, sizeof(smi
));
1331 smi
.gpio_sda
= pdata
->gpio_sda
;
1332 smi
.gpio_sck
= pdata
->gpio_sck
;
1334 smi
.cmd_read
= 0xa9;
1335 smi
.cmd_write
= 0xa8;
1337 if (__rtl8366_smi_init(&smi
, "rtl8366"))
1340 if (rtl8366_smi_read_reg(&smi
, 0x5c, ®
))
1345 printk("Found an RTL8366S switch\n");
1346 type
= RTL8366_TYPE_S
;
1349 printk("Found an RTL8366RB switch\n");
1350 type
= RTL8366_TYPE_RB
;
1353 printk("Found an Unknown RTL8366 switch (id=0x%04x)\n", reg
);
1358 __rtl8366_smi_cleanup(&smi
);
1363 int rtl8366_smi_init(struct rtl8366_smi
*smi
)
1370 err
= __rtl8366_smi_init(smi
, dev_name(smi
->parent
));
1374 dev_info(smi
->parent
, "using GPIO pins %u (SDA) and %u (SCK)\n",
1375 smi
->gpio_sda
, smi
->gpio_sck
);
1377 err
= smi
->ops
->detect(smi
);
1379 dev_err(smi
->parent
, "chip detection failed, err=%d\n", err
);
1383 err
= rtl8366_reset(smi
);
1387 err
= smi
->ops
->setup(smi
);
1389 dev_err(smi
->parent
, "chip setup failed, err=%d\n", err
);
1393 err
= rtl8366_init_vlan(smi
);
1395 dev_err(smi
->parent
, "VLAN initialization failed, err=%d\n",
1400 err
= rtl8366_enable_all_ports(smi
, 1);
1404 err
= rtl8366_smi_mii_init(smi
);
1408 rtl8366_debugfs_init(smi
);
1413 __rtl8366_smi_cleanup(smi
);
1417 EXPORT_SYMBOL_GPL(rtl8366_smi_init
);
1419 void rtl8366_smi_cleanup(struct rtl8366_smi
*smi
)
1421 rtl8366_debugfs_remove(smi
);
1422 rtl8366_smi_mii_cleanup(smi
);
1423 __rtl8366_smi_cleanup(smi
);
1425 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup
);
1428 int rtl8366_smi_probe_of(struct platform_device
*pdev
, struct rtl8366_smi
*smi
)
1430 int sck
= of_get_named_gpio(pdev
->dev
.of_node
, "gpio-sck", 0);
1431 int sda
= of_get_named_gpio(pdev
->dev
.of_node
, "gpio-sda", 0);
1433 if (!gpio_is_valid(sck
) || !gpio_is_valid(sda
)) {
1434 dev_err(&pdev
->dev
, "gpios missing in devictree\n");
1438 smi
->gpio_sda
= sda
;
1439 smi
->gpio_sck
= sck
;
1444 static inline int rtl8366_smi_probe_of(struct platform_device
*pdev
, struct rtl8366_smi
*smi
)
1450 int rtl8366_smi_probe_plat(struct platform_device
*pdev
, struct rtl8366_smi
*smi
)
1452 struct rtl8366_platform_data
*pdata
= pdev
->dev
.platform_data
;
1454 if (!pdev
->dev
.platform_data
) {
1455 dev_err(&pdev
->dev
, "no platform data specified\n");
1459 smi
->gpio_sda
= pdata
->gpio_sda
;
1460 smi
->gpio_sck
= pdata
->gpio_sck
;
1461 smi
->hw_reset
= pdata
->hw_reset
;
1467 struct rtl8366_smi
*rtl8366_smi_probe(struct platform_device
*pdev
)
1469 struct rtl8366_smi
*smi
;
1472 smi
= rtl8366_smi_alloc(&pdev
->dev
);
1476 if (pdev
->dev
.of_node
)
1477 err
= rtl8366_smi_probe_of(pdev
, smi
);
1479 err
= rtl8366_smi_probe_plat(pdev
, smi
);
1490 EXPORT_SYMBOL_GPL(rtl8366_smi_probe
);
1492 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
1493 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1494 MODULE_LICENSE("GPL v2");