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 static int rtl8366_smi_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
);
611 static int rtl8366_smi_enable_vlan4k(struct rtl8366_smi
*smi
, int enable
)
616 err
= smi
->ops
->enable_vlan(smi
, enable
);
620 smi
->vlan_enabled
= enable
;
623 err
= smi
->ops
->enable_vlan4k(smi
, enable
);
627 smi
->vlan4k_enabled
= enable
;
631 static int rtl8366_smi_enable_all_ports(struct rtl8366_smi
*smi
, int enable
)
636 for (port
= 0; port
< smi
->num_ports
; port
++) {
637 err
= smi
->ops
->enable_port(smi
, port
, enable
);
645 static int rtl8366_smi_reset_vlan(struct rtl8366_smi
*smi
)
647 struct rtl8366_vlan_mc vlanmc
;
651 rtl8366_smi_enable_vlan(smi
, 0);
652 rtl8366_smi_enable_vlan4k(smi
, 0);
654 /* clear VLAN member configurations */
660 for (i
= 0; i
< smi
->num_vlan_mc
; i
++) {
661 err
= smi
->ops
->set_vlan_mc(smi
, i
, &vlanmc
);
669 static int rtl8366_init_vlan(struct rtl8366_smi
*smi
)
674 err
= rtl8366_smi_reset_vlan(smi
);
678 for (port
= 0; port
< smi
->num_ports
; port
++) {
681 if (port
== smi
->cpu_port
)
682 mask
= (1 << smi
->num_ports
) - 1;
684 mask
= (1 << port
) | (1 << smi
->cpu_port
);
686 err
= rtl8366_set_vlan(smi
, (port
+ 1), mask
, mask
, 0);
690 err
= rtl8366_set_pvid(smi
, port
, (port
+ 1));
695 return rtl8366_smi_enable_vlan(smi
, 1);
698 #ifdef CONFIG_RTL8366_SMI_DEBUG_FS
699 int rtl8366_debugfs_open(struct inode
*inode
, struct file
*file
)
701 file
->private_data
= inode
->i_private
;
704 EXPORT_SYMBOL_GPL(rtl8366_debugfs_open
);
706 static ssize_t
rtl8366_read_debugfs_vlan_mc(struct file
*file
,
707 char __user
*user_buf
,
708 size_t count
, loff_t
*ppos
)
710 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
712 char *buf
= smi
->buf
;
714 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
715 "%2s %6s %4s %6s %6s %3s\n",
716 "id", "vid","prio", "member", "untag", "fid");
718 for (i
= 0; i
< smi
->num_vlan_mc
; ++i
) {
719 struct rtl8366_vlan_mc vlanmc
;
721 smi
->ops
->get_vlan_mc(smi
, i
, &vlanmc
);
723 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
724 "%2d %6d %4d 0x%04x 0x%04x %3d\n",
725 i
, vlanmc
.vid
, vlanmc
.priority
,
726 vlanmc
.member
, vlanmc
.untag
, vlanmc
.fid
);
729 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
732 #define RTL8366_VLAN4K_PAGE_SIZE 64
733 #define RTL8366_VLAN4K_NUM_PAGES (4096 / RTL8366_VLAN4K_PAGE_SIZE)
735 static ssize_t
rtl8366_read_debugfs_vlan_4k(struct file
*file
,
736 char __user
*user_buf
,
737 size_t count
, loff_t
*ppos
)
739 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
742 char *buf
= smi
->buf
;
744 if (smi
->dbg_vlan_4k_page
>= RTL8366_VLAN4K_NUM_PAGES
) {
745 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
746 "invalid page: %u\n", smi
->dbg_vlan_4k_page
);
747 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
750 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
752 "vid", "member", "untag", "fid");
754 offset
= RTL8366_VLAN4K_PAGE_SIZE
* smi
->dbg_vlan_4k_page
;
755 for (i
= 0; i
< RTL8366_VLAN4K_PAGE_SIZE
; i
++) {
756 struct rtl8366_vlan_4k vlan4k
;
758 smi
->ops
->get_vlan_4k(smi
, offset
+ i
, &vlan4k
);
760 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
761 "%4d 0x%04x 0x%04x %3d\n",
762 vlan4k
.vid
, vlan4k
.member
,
763 vlan4k
.untag
, vlan4k
.fid
);
766 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
769 static ssize_t
rtl8366_read_debugfs_pvid(struct file
*file
,
770 char __user
*user_buf
,
771 size_t count
, loff_t
*ppos
)
773 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
774 char *buf
= smi
->buf
;
778 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "%4s %4s\n",
781 for (i
= 0; i
< smi
->num_ports
; i
++) {
785 err
= rtl8366_get_pvid(smi
, i
, &pvid
);
787 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
790 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
791 "%4d %4d\n", i
, pvid
);
794 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
797 static ssize_t
rtl8366_read_debugfs_reg(struct file
*file
,
798 char __user
*user_buf
,
799 size_t count
, loff_t
*ppos
)
801 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
802 u32 t
, reg
= smi
->dbg_reg
;
804 char *buf
= smi
->buf
;
806 memset(buf
, '\0', sizeof(smi
->buf
));
808 err
= rtl8366_smi_read_reg(smi
, reg
, &t
);
810 len
+= snprintf(buf
, sizeof(smi
->buf
),
811 "Read failed (reg: 0x%04x)\n", reg
);
812 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
815 len
+= snprintf(buf
, sizeof(smi
->buf
), "reg = 0x%04x, val = 0x%04x\n",
818 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
821 static ssize_t
rtl8366_write_debugfs_reg(struct file
*file
,
822 const char __user
*user_buf
,
823 size_t count
, loff_t
*ppos
)
825 struct rtl8366_smi
*smi
= (struct rtl8366_smi
*)file
->private_data
;
827 u32 reg
= smi
->dbg_reg
;
830 char *buf
= smi
->buf
;
832 len
= min(count
, sizeof(smi
->buf
) - 1);
833 if (copy_from_user(buf
, user_buf
, len
)) {
834 dev_err(smi
->parent
, "copy from user failed\n");
839 if (len
> 0 && buf
[len
- 1] == '\n')
843 if (kstrtoul(buf
, 16, &data
)) {
844 dev_err(smi
->parent
, "Invalid reg value %s\n", buf
);
846 err
= rtl8366_smi_write_reg(smi
, reg
, data
);
849 "writing reg 0x%04x val 0x%04lx failed\n",
857 static ssize_t
rtl8366_read_debugfs_mibs(struct file
*file
,
858 char __user
*user_buf
,
859 size_t count
, loff_t
*ppos
)
861 struct rtl8366_smi
*smi
= file
->private_data
;
863 char *buf
= smi
->buf
;
865 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "%-36s",
868 for (i
= 0; i
< smi
->num_ports
; i
++) {
871 snprintf(port_buf
, sizeof(port_buf
), "Port %d", i
);
872 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, " %12s",
875 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "\n");
877 for (i
= 0; i
< smi
->num_mib_counters
; i
++) {
878 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "%-36s ",
879 smi
->mib_counters
[i
].name
);
880 for (j
= 0; j
< smi
->num_ports
; j
++) {
881 unsigned long long counter
= 0;
883 if (!smi
->ops
->get_mib_counter(smi
, i
, j
, &counter
))
884 len
+= snprintf(buf
+ len
,
885 sizeof(smi
->buf
) - len
,
888 len
+= snprintf(buf
+ len
,
889 sizeof(smi
->buf
) - len
,
892 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "\n");
895 return simple_read_from_buffer(user_buf
, count
, ppos
, buf
, len
);
898 static const struct file_operations fops_rtl8366_regs
= {
899 .read
= rtl8366_read_debugfs_reg
,
900 .write
= rtl8366_write_debugfs_reg
,
901 .open
= rtl8366_debugfs_open
,
905 static const struct file_operations fops_rtl8366_vlan_mc
= {
906 .read
= rtl8366_read_debugfs_vlan_mc
,
907 .open
= rtl8366_debugfs_open
,
911 static const struct file_operations fops_rtl8366_vlan_4k
= {
912 .read
= rtl8366_read_debugfs_vlan_4k
,
913 .open
= rtl8366_debugfs_open
,
917 static const struct file_operations fops_rtl8366_pvid
= {
918 .read
= rtl8366_read_debugfs_pvid
,
919 .open
= rtl8366_debugfs_open
,
923 static const struct file_operations fops_rtl8366_mibs
= {
924 .read
= rtl8366_read_debugfs_mibs
,
925 .open
= rtl8366_debugfs_open
,
929 static void rtl8366_debugfs_init(struct rtl8366_smi
*smi
)
934 if (!smi
->debugfs_root
)
935 smi
->debugfs_root
= debugfs_create_dir(dev_name(smi
->parent
),
938 if (!smi
->debugfs_root
) {
939 dev_err(smi
->parent
, "Unable to create debugfs dir\n");
942 root
= smi
->debugfs_root
;
944 node
= debugfs_create_x16("reg", S_IRUGO
| S_IWUSR
, root
,
947 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
952 node
= debugfs_create_file("val", S_IRUGO
| S_IWUSR
, root
, smi
,
955 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
960 node
= debugfs_create_file("vlan_mc", S_IRUSR
, root
, smi
,
961 &fops_rtl8366_vlan_mc
);
963 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
968 node
= debugfs_create_u8("vlan_4k_page", S_IRUGO
| S_IWUSR
, root
,
969 &smi
->dbg_vlan_4k_page
);
971 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
976 node
= debugfs_create_file("vlan_4k", S_IRUSR
, root
, smi
,
977 &fops_rtl8366_vlan_4k
);
979 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
984 node
= debugfs_create_file("pvid", S_IRUSR
, root
, smi
,
987 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
992 node
= debugfs_create_file("mibs", S_IRUSR
, smi
->debugfs_root
, smi
,
995 dev_err(smi
->parent
, "Creating debugfs file '%s' failed\n",
999 static void rtl8366_debugfs_remove(struct rtl8366_smi
*smi
)
1001 if (smi
->debugfs_root
) {
1002 debugfs_remove_recursive(smi
->debugfs_root
);
1003 smi
->debugfs_root
= NULL
;
1007 static inline void rtl8366_debugfs_init(struct rtl8366_smi
*smi
) {}
1008 static inline void rtl8366_debugfs_remove(struct rtl8366_smi
*smi
) {}
1009 #endif /* CONFIG_RTL8366_SMI_DEBUG_FS */
1011 static int rtl8366_smi_mii_init(struct rtl8366_smi
*smi
)
1016 struct device_node
*np
= NULL
;
1018 np
= of_get_child_by_name(smi
->parent
->of_node
, "mdio-bus");
1021 smi
->mii_bus
= mdiobus_alloc();
1022 if (smi
->mii_bus
== NULL
) {
1027 smi
->mii_bus
->priv
= (void *) smi
;
1028 smi
->mii_bus
->name
= dev_name(smi
->parent
);
1029 smi
->mii_bus
->read
= smi
->ops
->mii_read
;
1030 smi
->mii_bus
->write
= smi
->ops
->mii_write
;
1031 snprintf(smi
->mii_bus
->id
, MII_BUS_ID_SIZE
, "%s",
1032 dev_name(smi
->parent
));
1033 smi
->mii_bus
->parent
= smi
->parent
;
1034 smi
->mii_bus
->phy_mask
= ~(0x1f);
1038 ret
= of_mdiobus_register(smi
->mii_bus
, np
);
1041 ret
= mdiobus_register(smi
->mii_bus
);
1049 mdiobus_free(smi
->mii_bus
);
1054 static void rtl8366_smi_mii_cleanup(struct rtl8366_smi
*smi
)
1056 mdiobus_unregister(smi
->mii_bus
);
1057 mdiobus_free(smi
->mii_bus
);
1060 int rtl8366_sw_reset_switch(struct switch_dev
*dev
)
1062 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1065 err
= rtl8366_reset(smi
);
1069 err
= smi
->ops
->setup(smi
);
1073 err
= rtl8366_smi_reset_vlan(smi
);
1077 err
= rtl8366_smi_enable_vlan(smi
, 1);
1081 return rtl8366_smi_enable_all_ports(smi
, 1);
1083 EXPORT_SYMBOL_GPL(rtl8366_sw_reset_switch
);
1085 int rtl8366_sw_get_port_pvid(struct switch_dev
*dev
, int port
, int *val
)
1087 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1088 return rtl8366_get_pvid(smi
, port
, val
);
1090 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid
);
1092 int rtl8366_sw_set_port_pvid(struct switch_dev
*dev
, int port
, int val
)
1094 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1095 return rtl8366_set_pvid(smi
, port
, val
);
1097 EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid
);
1099 int rtl8366_sw_get_port_mib(struct switch_dev
*dev
,
1100 const struct switch_attr
*attr
,
1101 struct switch_val
*val
)
1103 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1105 unsigned long long counter
= 0;
1106 char *buf
= smi
->buf
;
1108 if (val
->port_vlan
>= smi
->num_ports
)
1111 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1112 "Port %d MIB counters\n",
1115 for (i
= 0; i
< smi
->num_mib_counters
; ++i
) {
1116 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1117 "%-36s: ", smi
->mib_counters
[i
].name
);
1118 if (!smi
->ops
->get_mib_counter(smi
, i
, val
->port_vlan
,
1120 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1123 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1131 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib
);
1133 int rtl8366_sw_get_port_stats(struct switch_dev
*dev
, int port
,
1134 struct switch_port_stats
*stats
,
1135 int txb_id
, int rxb_id
)
1137 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1138 unsigned long long counter
= 0;
1141 if (port
>= smi
->num_ports
)
1144 ret
= smi
->ops
->get_mib_counter(smi
, txb_id
, port
, &counter
);
1148 stats
->tx_bytes
= counter
;
1150 ret
= smi
->ops
->get_mib_counter(smi
, rxb_id
, port
, &counter
);
1154 stats
->rx_bytes
= counter
;
1158 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_stats
);
1160 int rtl8366_sw_get_vlan_info(struct switch_dev
*dev
,
1161 const struct switch_attr
*attr
,
1162 struct switch_val
*val
)
1166 struct rtl8366_vlan_4k vlan4k
;
1167 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1168 char *buf
= smi
->buf
;
1171 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1174 memset(buf
, '\0', sizeof(smi
->buf
));
1176 err
= smi
->ops
->get_vlan_4k(smi
, val
->port_vlan
, &vlan4k
);
1180 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1181 "VLAN %d: Ports: '", vlan4k
.vid
);
1183 for (i
= 0; i
< smi
->num_ports
; i
++) {
1184 if (!(vlan4k
.member
& (1 << i
)))
1187 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
, "%d%s", i
,
1188 (vlan4k
.untag
& (1 << i
)) ? "" : "t");
1191 len
+= snprintf(buf
+ len
, sizeof(smi
->buf
) - len
,
1192 "', members=%04x, untag=%04x, fid=%u",
1193 vlan4k
.member
, vlan4k
.untag
, vlan4k
.fid
);
1200 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info
);
1202 int rtl8366_sw_get_vlan_ports(struct switch_dev
*dev
, struct switch_val
*val
)
1204 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1205 struct switch_port
*port
;
1206 struct rtl8366_vlan_4k vlan4k
;
1209 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1212 smi
->ops
->get_vlan_4k(smi
, val
->port_vlan
, &vlan4k
);
1214 port
= &val
->value
.ports
[0];
1216 for (i
= 0; i
< smi
->num_ports
; i
++) {
1217 if (!(vlan4k
.member
& BIT(i
)))
1221 port
->flags
= (vlan4k
.untag
& BIT(i
)) ?
1222 0 : BIT(SWITCH_PORT_FLAG_TAGGED
);
1228 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports
);
1230 int rtl8366_sw_set_vlan_ports(struct switch_dev
*dev
, struct switch_val
*val
)
1232 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1233 struct switch_port
*port
;
1239 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1242 port
= &val
->value
.ports
[0];
1243 for (i
= 0; i
< val
->len
; i
++, port
++) {
1245 member
|= BIT(port
->id
);
1247 if (!(port
->flags
& BIT(SWITCH_PORT_FLAG_TAGGED
)))
1248 untag
|= BIT(port
->id
);
1251 * To ensure that we have a valid MC entry for this VLAN,
1252 * initialize the port VLAN ID here.
1254 err
= rtl8366_get_pvid(smi
, port
->id
, &pvid
);
1258 err
= rtl8366_set_pvid(smi
, port
->id
, val
->port_vlan
);
1264 return rtl8366_set_vlan(smi
, val
->port_vlan
, member
, untag
, 0);
1266 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports
);
1268 int rtl8366_sw_get_vlan_fid(struct switch_dev
*dev
,
1269 const struct switch_attr
*attr
,
1270 struct switch_val
*val
)
1272 struct rtl8366_vlan_4k vlan4k
;
1273 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1276 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1279 err
= smi
->ops
->get_vlan_4k(smi
, val
->port_vlan
, &vlan4k
);
1283 val
->value
.i
= vlan4k
.fid
;
1287 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_fid
);
1289 int rtl8366_sw_set_vlan_fid(struct switch_dev
*dev
,
1290 const struct switch_attr
*attr
,
1291 struct switch_val
*val
)
1293 struct rtl8366_vlan_4k vlan4k
;
1294 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1297 if (!smi
->ops
->is_vlan_valid(smi
, val
->port_vlan
))
1300 if (val
->value
.i
< 0 || val
->value
.i
> attr
->max
)
1303 err
= smi
->ops
->get_vlan_4k(smi
, val
->port_vlan
, &vlan4k
);
1307 return rtl8366_set_vlan(smi
, val
->port_vlan
,
1312 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_fid
);
1314 int rtl8366_sw_get_vlan_enable(struct switch_dev
*dev
,
1315 const struct switch_attr
*attr
,
1316 struct switch_val
*val
)
1318 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1324 val
->value
.i
= smi
->vlan_enabled
;
1326 val
->value
.i
= smi
->vlan4k_enabled
;
1330 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_enable
);
1332 int rtl8366_sw_set_vlan_enable(struct switch_dev
*dev
,
1333 const struct switch_attr
*attr
,
1334 struct switch_val
*val
)
1336 struct rtl8366_smi
*smi
= sw_to_rtl8366_smi(dev
);
1343 err
= rtl8366_smi_enable_vlan(smi
, val
->value
.i
);
1345 err
= rtl8366_smi_enable_vlan4k(smi
, val
->value
.i
);
1349 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_enable
);
1351 struct rtl8366_smi
*rtl8366_smi_alloc(struct device
*parent
)
1353 struct rtl8366_smi
*smi
;
1357 smi
= kzalloc(sizeof(*smi
), GFP_KERNEL
);
1359 dev_err(parent
, "no memory for private data\n");
1363 smi
->parent
= parent
;
1366 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc
);
1368 static int __rtl8366_smi_init(struct rtl8366_smi
*smi
, const char *name
)
1372 if (!smi
->ext_mbus
) {
1373 err
= gpio_request(smi
->gpio_sda
, name
);
1375 printk(KERN_ERR
"rtl8366_smi: gpio_request failed for %u, err=%d\n",
1376 smi
->gpio_sda
, err
);
1380 err
= gpio_request(smi
->gpio_sck
, name
);
1382 printk(KERN_ERR
"rtl8366_smi: gpio_request failed for %u, err=%d\n",
1383 smi
->gpio_sck
, err
);
1388 spin_lock_init(&smi
->lock
);
1390 /* start the switch */
1391 if (smi
->hw_reset
) {
1392 smi
->hw_reset(smi
, false);
1393 msleep(RTL8366_SMI_HW_START_DELAY
);
1399 gpio_free(smi
->gpio_sda
);
1404 static void __rtl8366_smi_cleanup(struct rtl8366_smi
*smi
)
1407 smi
->hw_reset(smi
, true);
1409 if (!smi
->ext_mbus
) {
1410 gpio_free(smi
->gpio_sck
);
1411 gpio_free(smi
->gpio_sda
);
1415 enum rtl8366_type
rtl8366_smi_detect(struct rtl8366_platform_data
*pdata
)
1417 static struct rtl8366_smi smi
;
1418 enum rtl8366_type type
= RTL8366_TYPE_UNKNOWN
;
1421 memset(&smi
, 0, sizeof(smi
));
1422 smi
.gpio_sda
= pdata
->gpio_sda
;
1423 smi
.gpio_sck
= pdata
->gpio_sck
;
1425 smi
.cmd_read
= 0xa9;
1426 smi
.cmd_write
= 0xa8;
1428 if (__rtl8366_smi_init(&smi
, "rtl8366"))
1431 if (rtl8366_smi_read_reg(&smi
, 0x5c, ®
))
1436 printk("Found an RTL8366S switch\n");
1437 type
= RTL8366_TYPE_S
;
1440 printk("Found an RTL8366RB switch\n");
1441 type
= RTL8366_TYPE_RB
;
1444 printk("Found an Unknown RTL8366 switch (id=0x%04x)\n", reg
);
1449 __rtl8366_smi_cleanup(&smi
);
1454 int rtl8366_smi_init(struct rtl8366_smi
*smi
)
1461 err
= __rtl8366_smi_init(smi
, dev_name(smi
->parent
));
1466 dev_info(smi
->parent
, "using GPIO pins %u (SDA) and %u (SCK)\n",
1467 smi
->gpio_sda
, smi
->gpio_sck
);
1469 dev_info(smi
->parent
, "using MDIO bus '%s'\n", smi
->ext_mbus
->name
);
1471 err
= smi
->ops
->detect(smi
);
1473 dev_err(smi
->parent
, "chip detection failed, err=%d\n", err
);
1477 err
= rtl8366_reset(smi
);
1481 err
= smi
->ops
->setup(smi
);
1483 dev_err(smi
->parent
, "chip setup failed, err=%d\n", err
);
1487 err
= rtl8366_init_vlan(smi
);
1489 dev_err(smi
->parent
, "VLAN initialization failed, err=%d\n",
1494 err
= rtl8366_smi_enable_all_ports(smi
, 1);
1498 err
= rtl8366_smi_mii_init(smi
);
1502 rtl8366_debugfs_init(smi
);
1507 __rtl8366_smi_cleanup(smi
);
1511 EXPORT_SYMBOL_GPL(rtl8366_smi_init
);
1513 void rtl8366_smi_cleanup(struct rtl8366_smi
*smi
)
1515 rtl8366_debugfs_remove(smi
);
1516 rtl8366_smi_mii_cleanup(smi
);
1517 __rtl8366_smi_cleanup(smi
);
1519 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup
);
1522 static void rtl8366_smi_reset(struct rtl8366_smi
*smi
, bool active
)
1525 reset_control_assert(smi
->reset
);
1527 reset_control_deassert(smi
->reset
);
1530 int rtl8366_smi_probe_of(struct platform_device
*pdev
, struct rtl8366_smi
*smi
)
1532 int sck
= of_get_named_gpio(pdev
->dev
.of_node
, "gpio-sck", 0);
1533 int sda
= of_get_named_gpio(pdev
->dev
.of_node
, "gpio-sda", 0);
1534 struct device_node
*np
= pdev
->dev
.of_node
;
1535 struct device_node
*mdio_node
;
1537 mdio_node
= of_parse_phandle(np
, "mii-bus", 0);
1539 dev_err(&pdev
->dev
, "cannot find mdio node phandle");
1543 smi
->ext_mbus
= of_mdio_find_bus(mdio_node
);
1544 if (!smi
->ext_mbus
) {
1545 dev_info(&pdev
->dev
,
1546 "cannot find mdio bus from bus handle (yet)");
1553 if (!gpio_is_valid(sck
) || !gpio_is_valid(sda
)) {
1555 dev_err(&pdev
->dev
, "gpios missing in devictree\n");
1558 return -EPROBE_DEFER
;
1562 smi
->gpio_sda
= sda
;
1563 smi
->gpio_sck
= sck
;
1564 smi
->reset
= devm_reset_control_get(&pdev
->dev
, "switch");
1565 if (!IS_ERR(smi
->reset
))
1566 smi
->hw_reset
= rtl8366_smi_reset
;
1571 static inline int rtl8366_smi_probe_of(struct platform_device
*pdev
, struct rtl8366_smi
*smi
)
1577 int rtl8366_smi_probe_plat(struct platform_device
*pdev
, struct rtl8366_smi
*smi
)
1579 struct rtl8366_platform_data
*pdata
= pdev
->dev
.platform_data
;
1581 if (!pdev
->dev
.platform_data
) {
1582 dev_err(&pdev
->dev
, "no platform data specified\n");
1586 smi
->gpio_sda
= pdata
->gpio_sda
;
1587 smi
->gpio_sck
= pdata
->gpio_sck
;
1588 smi
->hw_reset
= pdata
->hw_reset
;
1594 struct rtl8366_smi
*rtl8366_smi_probe(struct platform_device
*pdev
)
1596 struct rtl8366_smi
*smi
;
1599 smi
= rtl8366_smi_alloc(&pdev
->dev
);
1603 if (pdev
->dev
.of_node
)
1604 err
= rtl8366_smi_probe_of(pdev
, smi
);
1606 err
= rtl8366_smi_probe_plat(pdev
, smi
);
1615 return ERR_PTR(err
);
1617 EXPORT_SYMBOL_GPL(rtl8366_smi_probe
);
1619 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
1620 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1621 MODULE_LICENSE("GPL v2");