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[openwrt/openwrt.git] / target / linux / generic / files / drivers / net / phy / rtl8366_smi.c
1 /*
2 * Realtek RTL8366 SMI interface driver
3 *
4 * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
5 *
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.
9 */
10
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>
18
19 #ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
20 #include <linux/debugfs.h>
21 #endif
22
23 #include "rtl8366_smi.h"
24
25 #define RTL8366_SMI_ACK_RETRY_COUNT 5
26 #define RTL8366_SMI_CLK_DELAY 10 /* nsec */
27
28 static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
29 {
30 ndelay(RTL8366_SMI_CLK_DELAY);
31 }
32
33 static void rtl8366_smi_start(struct rtl8366_smi *smi)
34 {
35 unsigned int sda = smi->gpio_sda;
36 unsigned int sck = smi->gpio_sck;
37
38 /*
39 * Set GPIO pins to output mode, with initial state:
40 * SCK = 0, SDA = 1
41 */
42 gpio_direction_output(sck, 0);
43 gpio_direction_output(sda, 1);
44 rtl8366_smi_clk_delay(smi);
45
46 /* CLK 1: 0 -> 1, 1 -> 0 */
47 gpio_set_value(sck, 1);
48 rtl8366_smi_clk_delay(smi);
49 gpio_set_value(sck, 0);
50 rtl8366_smi_clk_delay(smi);
51
52 /* CLK 2: */
53 gpio_set_value(sck, 1);
54 rtl8366_smi_clk_delay(smi);
55 gpio_set_value(sda, 0);
56 rtl8366_smi_clk_delay(smi);
57 gpio_set_value(sck, 0);
58 rtl8366_smi_clk_delay(smi);
59 gpio_set_value(sda, 1);
60 }
61
62 static void rtl8366_smi_stop(struct rtl8366_smi *smi)
63 {
64 unsigned int sda = smi->gpio_sda;
65 unsigned int sck = smi->gpio_sck;
66
67 rtl8366_smi_clk_delay(smi);
68 gpio_set_value(sda, 0);
69 gpio_set_value(sck, 1);
70 rtl8366_smi_clk_delay(smi);
71 gpio_set_value(sda, 1);
72 rtl8366_smi_clk_delay(smi);
73 gpio_set_value(sck, 1);
74 rtl8366_smi_clk_delay(smi);
75 gpio_set_value(sck, 0);
76 rtl8366_smi_clk_delay(smi);
77 gpio_set_value(sck, 1);
78
79 /* add a click */
80 rtl8366_smi_clk_delay(smi);
81 gpio_set_value(sck, 0);
82 rtl8366_smi_clk_delay(smi);
83 gpio_set_value(sck, 1);
84
85 /* set GPIO pins to input mode */
86 gpio_direction_input(sda);
87 gpio_direction_input(sck);
88 }
89
90 static void rtl8366_smi_write_bits(struct rtl8366_smi *smi, u32 data, u32 len)
91 {
92 unsigned int sda = smi->gpio_sda;
93 unsigned int sck = smi->gpio_sck;
94
95 for (; len > 0; len--) {
96 rtl8366_smi_clk_delay(smi);
97
98 /* prepare data */
99 gpio_set_value(sda, !!(data & ( 1 << (len - 1))));
100 rtl8366_smi_clk_delay(smi);
101
102 /* clocking */
103 gpio_set_value(sck, 1);
104 rtl8366_smi_clk_delay(smi);
105 gpio_set_value(sck, 0);
106 }
107 }
108
109 static void rtl8366_smi_read_bits(struct rtl8366_smi *smi, u32 len, u32 *data)
110 {
111 unsigned int sda = smi->gpio_sda;
112 unsigned int sck = smi->gpio_sck;
113
114 gpio_direction_input(sda);
115
116 for (*data = 0; len > 0; len--) {
117 u32 u;
118
119 rtl8366_smi_clk_delay(smi);
120
121 /* clocking */
122 gpio_set_value(sck, 1);
123 rtl8366_smi_clk_delay(smi);
124 u = !!gpio_get_value(sda);
125 gpio_set_value(sck, 0);
126
127 *data |= (u << (len - 1));
128 }
129
130 gpio_direction_output(sda, 0);
131 }
132
133 static int rtl8366_smi_wait_for_ack(struct rtl8366_smi *smi)
134 {
135 int retry_cnt;
136
137 retry_cnt = 0;
138 do {
139 u32 ack;
140
141 rtl8366_smi_read_bits(smi, 1, &ack);
142 if (ack == 0)
143 break;
144
145 if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT)
146 return -EIO;
147 } while (1);
148
149 return 0;
150 }
151
152 static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
153 {
154 rtl8366_smi_write_bits(smi, data, 8);
155 return rtl8366_smi_wait_for_ack(smi);
156 }
157
158 static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
159 {
160 u32 t;
161
162 /* read data */
163 rtl8366_smi_read_bits(smi, 8, &t);
164 *data = (t & 0xff);
165
166 /* send an ACK */
167 rtl8366_smi_write_bits(smi, 0x00, 1);
168
169 return 0;
170 }
171
172 static int rtl8366_smi_read_byte1(struct rtl8366_smi *smi, u8 *data)
173 {
174 u32 t;
175
176 /* read data */
177 rtl8366_smi_read_bits(smi, 8, &t);
178 *data = (t & 0xff);
179
180 /* send an ACK */
181 rtl8366_smi_write_bits(smi, 0x01, 1);
182
183 return 0;
184 }
185
186 int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
187 {
188 unsigned long flags;
189 u8 lo = 0;
190 u8 hi = 0;
191 int ret;
192
193 spin_lock_irqsave(&smi->lock, flags);
194
195 rtl8366_smi_start(smi);
196
197 /* send READ command */
198 ret = rtl8366_smi_write_byte(smi, 0x0a << 4 | 0x04 << 1 | 0x01);
199 if (ret)
200 goto out;
201
202 /* set ADDR[7:0] */
203 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
204 if (ret)
205 goto out;
206
207 /* set ADDR[15:8] */
208 ret = rtl8366_smi_write_byte(smi, addr >> 8);
209 if (ret)
210 goto out;
211
212 /* read DATA[7:0] */
213 rtl8366_smi_read_byte0(smi, &lo);
214 /* read DATA[15:8] */
215 rtl8366_smi_read_byte1(smi, &hi);
216
217 *data = ((u32) lo) | (((u32) hi) << 8);
218
219 ret = 0;
220
221 out:
222 rtl8366_smi_stop(smi);
223 spin_unlock_irqrestore(&smi->lock, flags);
224
225 return ret;
226 }
227 EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
228
229 int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
230 {
231 unsigned long flags;
232 int ret;
233
234 spin_lock_irqsave(&smi->lock, flags);
235
236 rtl8366_smi_start(smi);
237
238 /* send WRITE command */
239 ret = rtl8366_smi_write_byte(smi, 0x0a << 4 | 0x04 << 1 | 0x00);
240 if (ret)
241 goto out;
242
243 /* set ADDR[7:0] */
244 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
245 if (ret)
246 goto out;
247
248 /* set ADDR[15:8] */
249 ret = rtl8366_smi_write_byte(smi, addr >> 8);
250 if (ret)
251 goto out;
252
253 /* write DATA[7:0] */
254 ret = rtl8366_smi_write_byte(smi, data & 0xff);
255 if (ret)
256 goto out;
257
258 /* write DATA[15:8] */
259 ret = rtl8366_smi_write_byte(smi, data >> 8);
260 if (ret)
261 goto out;
262
263 ret = 0;
264
265 out:
266 rtl8366_smi_stop(smi);
267 spin_unlock_irqrestore(&smi->lock, flags);
268
269 return ret;
270 }
271 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
272
273 int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
274 {
275 u32 t;
276 int err;
277
278 err = rtl8366_smi_read_reg(smi, addr, &t);
279 if (err)
280 return err;
281
282 err = rtl8366_smi_write_reg(smi, addr, (t & ~mask) | data);
283 return err;
284
285 }
286 EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
287
288 static int rtl8366_mc_is_used(struct rtl8366_smi *smi, int mc_index, int *used)
289 {
290 int err;
291 int i;
292
293 *used = 0;
294 for (i = 0; i < smi->num_ports; i++) {
295 int index = 0;
296
297 err = smi->ops->get_mc_index(smi, i, &index);
298 if (err)
299 return err;
300
301 if (mc_index == index) {
302 *used = 1;
303 break;
304 }
305 }
306
307 return 0;
308 }
309
310 static int rtl8366_set_vlan(struct rtl8366_smi *smi, int vid, u32 member,
311 u32 untag, u32 fid)
312 {
313 struct rtl8366_vlan_4k vlan4k;
314 int err;
315 int i;
316
317 /* Update the 4K table */
318 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
319 if (err)
320 return err;
321
322 vlan4k.member = member;
323 vlan4k.untag = untag;
324 vlan4k.fid = fid;
325 err = smi->ops->set_vlan_4k(smi, &vlan4k);
326 if (err)
327 return err;
328
329 /* Try to find an existing MC entry for this VID */
330 for (i = 0; i < smi->num_vlan_mc; i++) {
331 struct rtl8366_vlan_mc vlanmc;
332
333 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
334 if (err)
335 return err;
336
337 if (vid == vlanmc.vid) {
338 /* update the MC entry */
339 vlanmc.member = member;
340 vlanmc.untag = untag;
341 vlanmc.fid = fid;
342
343 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
344 break;
345 }
346 }
347
348 return err;
349 }
350
351 static int rtl8366_get_pvid(struct rtl8366_smi *smi, int port, int *val)
352 {
353 struct rtl8366_vlan_mc vlanmc;
354 int err;
355 int index;
356
357 err = smi->ops->get_mc_index(smi, port, &index);
358 if (err)
359 return err;
360
361 err = smi->ops->get_vlan_mc(smi, index, &vlanmc);
362 if (err)
363 return err;
364
365 *val = vlanmc.vid;
366 return 0;
367 }
368
369 static int rtl8366_set_pvid(struct rtl8366_smi *smi, unsigned port,
370 unsigned vid)
371 {
372 struct rtl8366_vlan_mc vlanmc;
373 struct rtl8366_vlan_4k vlan4k;
374 int err;
375 int i;
376
377 /* Try to find an existing MC entry for this VID */
378 for (i = 0; i < smi->num_vlan_mc; i++) {
379 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
380 if (err)
381 return err;
382
383 if (vid == vlanmc.vid) {
384 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
385 if (err)
386 return err;
387
388 err = smi->ops->set_mc_index(smi, port, i);
389 return err;
390 }
391 }
392
393 /* We have no MC entry for this VID, try to find an empty one */
394 for (i = 0; i < smi->num_vlan_mc; i++) {
395 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
396 if (err)
397 return err;
398
399 if (vlanmc.vid == 0 && vlanmc.member == 0) {
400 /* Update the entry from the 4K table */
401 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
402 if (err)
403 return err;
404
405 vlanmc.vid = vid;
406 vlanmc.member = vlan4k.member;
407 vlanmc.untag = vlan4k.untag;
408 vlanmc.fid = vlan4k.fid;
409 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
410 if (err)
411 return err;
412
413 err = smi->ops->set_mc_index(smi, port, i);
414 return err;
415 }
416 }
417
418 /* MC table is full, try to find an unused entry and replace it */
419 for (i = 0; i < smi->num_vlan_mc; i++) {
420 int used;
421
422 err = rtl8366_mc_is_used(smi, i, &used);
423 if (err)
424 return err;
425
426 if (!used) {
427 /* Update the entry from the 4K table */
428 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
429 if (err)
430 return err;
431
432 vlanmc.vid = vid;
433 vlanmc.member = vlan4k.member;
434 vlanmc.untag = vlan4k.untag;
435 vlanmc.fid = vlan4k.fid;
436 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
437 if (err)
438 return err;
439
440 err = smi->ops->set_mc_index(smi, port, i);
441 return err;
442 }
443 }
444
445 dev_err(smi->parent,
446 "all VLAN member configurations are in use\n");
447
448 return -ENOSPC;
449 }
450
451 static int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
452 {
453 int err;
454
455 err = smi->ops->enable_vlan(smi, enable);
456 if (err)
457 return err;
458
459 smi->vlan_enabled = enable;
460
461 if (!enable) {
462 smi->vlan4k_enabled = 0;
463 err = smi->ops->enable_vlan4k(smi, enable);
464 }
465
466 return err;
467 }
468
469 static int rtl8366_enable_vlan4k(struct rtl8366_smi *smi, int enable)
470 {
471 int err;
472
473 if (enable) {
474 err = smi->ops->enable_vlan(smi, enable);
475 if (err)
476 return err;
477
478 smi->vlan_enabled = enable;
479 }
480
481 err = smi->ops->enable_vlan4k(smi, enable);
482 if (err)
483 return err;
484
485 smi->vlan4k_enabled = enable;
486 return 0;
487 }
488
489 int rtl8366_enable_all_ports(struct rtl8366_smi *smi, int enable)
490 {
491 int port;
492 int err;
493
494 for (port = 0; port < smi->num_ports; port++) {
495 err = smi->ops->enable_port(smi, port, enable);
496 if (err)
497 return err;
498 }
499
500 return 0;
501 }
502 EXPORT_SYMBOL_GPL(rtl8366_enable_all_ports);
503
504 int rtl8366_reset_vlan(struct rtl8366_smi *smi)
505 {
506 struct rtl8366_vlan_mc vlanmc;
507 int err;
508 int i;
509
510 rtl8366_enable_vlan(smi, 0);
511 rtl8366_enable_vlan4k(smi, 0);
512
513 /* clear VLAN member configurations */
514 vlanmc.vid = 0;
515 vlanmc.priority = 0;
516 vlanmc.member = 0;
517 vlanmc.untag = 0;
518 vlanmc.fid = 0;
519 for (i = 0; i < smi->num_vlan_mc; i++) {
520 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
521 if (err)
522 return err;
523 }
524
525 return 0;
526 }
527 EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
528
529 static int rtl8366_init_vlan(struct rtl8366_smi *smi)
530 {
531 int port;
532 int err;
533
534 err = rtl8366_reset_vlan(smi);
535 if (err)
536 return err;
537
538 for (port = 0; port < smi->num_ports; port++) {
539 u32 mask;
540
541 if (port == smi->cpu_port)
542 mask = (1 << smi->num_ports) - 1;
543 else
544 mask = (1 << port) | (1 << smi->cpu_port);
545
546 err = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0);
547 if (err)
548 return err;
549
550 err = rtl8366_set_pvid(smi, port, (port + 1));
551 if (err)
552 return err;
553 }
554
555 return rtl8366_enable_vlan(smi, 1);
556 }
557
558 #ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
559 int rtl8366_debugfs_open(struct inode *inode, struct file *file)
560 {
561 file->private_data = inode->i_private;
562 return 0;
563 }
564 EXPORT_SYMBOL_GPL(rtl8366_debugfs_open);
565
566 static ssize_t rtl8366_read_debugfs_vlan_mc(struct file *file,
567 char __user *user_buf,
568 size_t count, loff_t *ppos)
569 {
570 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
571 int i, len = 0;
572 char *buf = smi->buf;
573
574 len += snprintf(buf + len, sizeof(smi->buf) - len,
575 "%2s %6s %4s %6s %6s %3s\n",
576 "id", "vid","prio", "member", "untag", "fid");
577
578 for (i = 0; i < smi->num_vlan_mc; ++i) {
579 struct rtl8366_vlan_mc vlanmc;
580
581 smi->ops->get_vlan_mc(smi, i, &vlanmc);
582
583 len += snprintf(buf + len, sizeof(smi->buf) - len,
584 "%2d %6d %4d 0x%04x 0x%04x %3d\n",
585 i, vlanmc.vid, vlanmc.priority,
586 vlanmc.member, vlanmc.untag, vlanmc.fid);
587 }
588
589 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
590 }
591
592 #define RTL8366_VLAN4K_PAGE_SIZE 64
593 #define RTL8366_VLAN4K_NUM_PAGES (4096 / RTL8366_VLAN4K_PAGE_SIZE)
594
595 static ssize_t rtl8366_read_debugfs_vlan_4k(struct file *file,
596 char __user *user_buf,
597 size_t count, loff_t *ppos)
598 {
599 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
600 int i, len = 0;
601 int offset;
602 char *buf = smi->buf;
603
604 if (smi->dbg_vlan_4k_page >= RTL8366_VLAN4K_NUM_PAGES) {
605 len += snprintf(buf + len, sizeof(smi->buf) - len,
606 "invalid page: %u\n", smi->dbg_vlan_4k_page);
607 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
608 }
609
610 len += snprintf(buf + len, sizeof(smi->buf) - len,
611 "%4s %6s %6s %3s\n",
612 "vid", "member", "untag", "fid");
613
614 offset = RTL8366_VLAN4K_PAGE_SIZE * smi->dbg_vlan_4k_page;
615 for (i = 0; i < RTL8366_VLAN4K_PAGE_SIZE; i++) {
616 struct rtl8366_vlan_4k vlan4k;
617
618 smi->ops->get_vlan_4k(smi, offset + i, &vlan4k);
619
620 len += snprintf(buf + len, sizeof(smi->buf) - len,
621 "%4d 0x%04x 0x%04x %3d\n",
622 vlan4k.vid, vlan4k.member,
623 vlan4k.untag, vlan4k.fid);
624 }
625
626 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
627 }
628
629 static ssize_t rtl8366_read_debugfs_pvid(struct file *file,
630 char __user *user_buf,
631 size_t count, loff_t *ppos)
632 {
633 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
634 char *buf = smi->buf;
635 int len = 0;
636 int i;
637
638 len += snprintf(buf + len, sizeof(smi->buf) - len, "%4s %4s\n",
639 "port", "pvid");
640
641 for (i = 0; i < smi->num_ports; i++) {
642 int pvid;
643 int err;
644
645 err = rtl8366_get_pvid(smi, i, &pvid);
646 if (err)
647 len += snprintf(buf + len, sizeof(smi->buf) - len,
648 "%4d error\n", i);
649 else
650 len += snprintf(buf + len, sizeof(smi->buf) - len,
651 "%4d %4d\n", i, pvid);
652 }
653
654 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
655 }
656
657 static ssize_t rtl8366_read_debugfs_reg(struct file *file,
658 char __user *user_buf,
659 size_t count, loff_t *ppos)
660 {
661 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
662 u32 t, reg = smi->dbg_reg;
663 int err, len = 0;
664 char *buf = smi->buf;
665
666 memset(buf, '\0', sizeof(smi->buf));
667
668 err = rtl8366_smi_read_reg(smi, reg, &t);
669 if (err) {
670 len += snprintf(buf, sizeof(smi->buf),
671 "Read failed (reg: 0x%04x)\n", reg);
672 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
673 }
674
675 len += snprintf(buf, sizeof(smi->buf), "reg = 0x%04x, val = 0x%04x\n",
676 reg, t);
677
678 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
679 }
680
681 static ssize_t rtl8366_write_debugfs_reg(struct file *file,
682 const char __user *user_buf,
683 size_t count, loff_t *ppos)
684 {
685 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
686 unsigned long data;
687 u32 reg = smi->dbg_reg;
688 int err;
689 size_t len;
690 char *buf = smi->buf;
691
692 len = min(count, sizeof(smi->buf) - 1);
693 if (copy_from_user(buf, user_buf, len)) {
694 dev_err(smi->parent, "copy from user failed\n");
695 return -EFAULT;
696 }
697
698 buf[len] = '\0';
699 if (len > 0 && buf[len - 1] == '\n')
700 buf[len - 1] = '\0';
701
702
703 if (strict_strtoul(buf, 16, &data)) {
704 dev_err(smi->parent, "Invalid reg value %s\n", buf);
705 } else {
706 err = rtl8366_smi_write_reg(smi, reg, data);
707 if (err) {
708 dev_err(smi->parent,
709 "writing reg 0x%04x val 0x%04lx failed\n",
710 reg, data);
711 }
712 }
713
714 return count;
715 }
716
717 static ssize_t rtl8366_read_debugfs_mibs(struct file *file,
718 char __user *user_buf,
719 size_t count, loff_t *ppos)
720 {
721 struct rtl8366_smi *smi = file->private_data;
722 int i, j, len = 0;
723 char *buf = smi->buf;
724
725 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s",
726 "Counter");
727
728 for (i = 0; i < smi->num_ports; i++) {
729 char port_buf[10];
730
731 snprintf(port_buf, sizeof(port_buf), "Port %d", i);
732 len += snprintf(buf + len, sizeof(smi->buf) - len, " %12s",
733 port_buf);
734 }
735 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
736
737 for (i = 0; i < smi->num_mib_counters; i++) {
738 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s ",
739 smi->mib_counters[i].name);
740 for (j = 0; j < smi->num_ports; j++) {
741 unsigned long long counter = 0;
742
743 if (!smi->ops->get_mib_counter(smi, i, j, &counter))
744 len += snprintf(buf + len,
745 sizeof(smi->buf) - len,
746 "%12llu ", counter);
747 else
748 len += snprintf(buf + len,
749 sizeof(smi->buf) - len,
750 "%12s ", "error");
751 }
752 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
753 }
754
755 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
756 }
757
758 static const struct file_operations fops_rtl8366_regs = {
759 .read = rtl8366_read_debugfs_reg,
760 .write = rtl8366_write_debugfs_reg,
761 .open = rtl8366_debugfs_open,
762 .owner = THIS_MODULE
763 };
764
765 static const struct file_operations fops_rtl8366_vlan_mc = {
766 .read = rtl8366_read_debugfs_vlan_mc,
767 .open = rtl8366_debugfs_open,
768 .owner = THIS_MODULE
769 };
770
771 static const struct file_operations fops_rtl8366_vlan_4k = {
772 .read = rtl8366_read_debugfs_vlan_4k,
773 .open = rtl8366_debugfs_open,
774 .owner = THIS_MODULE
775 };
776
777 static const struct file_operations fops_rtl8366_pvid = {
778 .read = rtl8366_read_debugfs_pvid,
779 .open = rtl8366_debugfs_open,
780 .owner = THIS_MODULE
781 };
782
783 static const struct file_operations fops_rtl8366_mibs = {
784 .read = rtl8366_read_debugfs_mibs,
785 .open = rtl8366_debugfs_open,
786 .owner = THIS_MODULE
787 };
788
789 static void rtl8366_debugfs_init(struct rtl8366_smi *smi)
790 {
791 struct dentry *node;
792 struct dentry *root;
793
794 if (!smi->debugfs_root)
795 smi->debugfs_root = debugfs_create_dir(dev_name(smi->parent),
796 NULL);
797
798 if (!smi->debugfs_root) {
799 dev_err(smi->parent, "Unable to create debugfs dir\n");
800 return;
801 }
802 root = smi->debugfs_root;
803
804 node = debugfs_create_x16("reg", S_IRUGO | S_IWUSR, root,
805 &smi->dbg_reg);
806 if (!node) {
807 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
808 "reg");
809 return;
810 }
811
812 node = debugfs_create_file("val", S_IRUGO | S_IWUSR, root, smi,
813 &fops_rtl8366_regs);
814 if (!node) {
815 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
816 "val");
817 return;
818 }
819
820 node = debugfs_create_file("vlan_mc", S_IRUSR, root, smi,
821 &fops_rtl8366_vlan_mc);
822 if (!node) {
823 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
824 "vlan_mc");
825 return;
826 }
827
828 node = debugfs_create_u8("vlan_4k_page", S_IRUGO | S_IWUSR, root,
829 &smi->dbg_vlan_4k_page);
830 if (!node) {
831 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
832 "vlan_4k_page");
833 return;
834 }
835
836 node = debugfs_create_file("vlan_4k", S_IRUSR, root, smi,
837 &fops_rtl8366_vlan_4k);
838 if (!node) {
839 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
840 "vlan_4k");
841 return;
842 }
843
844 node = debugfs_create_file("pvid", S_IRUSR, root, smi,
845 &fops_rtl8366_pvid);
846 if (!node) {
847 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
848 "pvid");
849 return;
850 }
851
852 node = debugfs_create_file("mibs", S_IRUSR, smi->debugfs_root, smi,
853 &fops_rtl8366_mibs);
854 if (!node)
855 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
856 "mibs");
857 }
858
859 static void rtl8366_debugfs_remove(struct rtl8366_smi *smi)
860 {
861 if (smi->debugfs_root) {
862 debugfs_remove_recursive(smi->debugfs_root);
863 smi->debugfs_root = NULL;
864 }
865 }
866 #else
867 static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
868 static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
869 #endif /* CONFIG_RTL8366S_PHY_DEBUG_FS */
870
871 static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
872 {
873 int ret;
874 int i;
875
876 smi->mii_bus = mdiobus_alloc();
877 if (smi->mii_bus == NULL) {
878 ret = -ENOMEM;
879 goto err;
880 }
881
882 smi->mii_bus->priv = (void *) smi;
883 smi->mii_bus->name = dev_name(smi->parent);
884 smi->mii_bus->read = smi->ops->mii_read;
885 smi->mii_bus->write = smi->ops->mii_write;
886 snprintf(smi->mii_bus->id, MII_BUS_ID_SIZE, "%s",
887 dev_name(smi->parent));
888 smi->mii_bus->parent = smi->parent;
889 smi->mii_bus->phy_mask = ~(0x1f);
890 smi->mii_bus->irq = smi->mii_irq;
891 for (i = 0; i < PHY_MAX_ADDR; i++)
892 smi->mii_irq[i] = PHY_POLL;
893
894 ret = mdiobus_register(smi->mii_bus);
895 if (ret)
896 goto err_free;
897
898 return 0;
899
900 err_free:
901 mdiobus_free(smi->mii_bus);
902 err:
903 return ret;
904 }
905
906 static void rtl8366_smi_mii_cleanup(struct rtl8366_smi *smi)
907 {
908 mdiobus_unregister(smi->mii_bus);
909 mdiobus_free(smi->mii_bus);
910 }
911
912 int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
913 {
914 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
915 return rtl8366_get_pvid(smi, port, val);
916 }
917 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid);
918
919 int rtl8366_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
920 {
921 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
922 return rtl8366_set_pvid(smi, port, val);
923 }
924 EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid);
925
926 int rtl8366_sw_get_port_mib(struct switch_dev *dev,
927 const struct switch_attr *attr,
928 struct switch_val *val)
929 {
930 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
931 int i, len = 0;
932 unsigned long long counter = 0;
933 char *buf = smi->buf;
934
935 if (val->port_vlan >= smi->num_ports)
936 return -EINVAL;
937
938 len += snprintf(buf + len, sizeof(smi->buf) - len,
939 "Port %d MIB counters\n",
940 val->port_vlan);
941
942 for (i = 0; i < smi->num_mib_counters; ++i) {
943 len += snprintf(buf + len, sizeof(smi->buf) - len,
944 "%-36s: ", smi->mib_counters[i].name);
945 if (!smi->ops->get_mib_counter(smi, i, val->port_vlan,
946 &counter))
947 len += snprintf(buf + len, sizeof(smi->buf) - len,
948 "%llu\n", counter);
949 else
950 len += snprintf(buf + len, sizeof(smi->buf) - len,
951 "%s\n", "error");
952 }
953
954 val->value.s = buf;
955 val->len = len;
956 return 0;
957 }
958 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
959
960 int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
961 const struct switch_attr *attr,
962 struct switch_val *val)
963 {
964 int i;
965 u32 len = 0;
966 struct rtl8366_vlan_4k vlan4k;
967 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
968 char *buf = smi->buf;
969 int err;
970
971 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
972 return -EINVAL;
973
974 memset(buf, '\0', sizeof(smi->buf));
975
976 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
977 if (err)
978 return err;
979
980 len += snprintf(buf + len, sizeof(smi->buf) - len,
981 "VLAN %d: Ports: '", vlan4k.vid);
982
983 for (i = 0; i < smi->num_ports; i++) {
984 if (!(vlan4k.member & (1 << i)))
985 continue;
986
987 len += snprintf(buf + len, sizeof(smi->buf) - len, "%d%s", i,
988 (vlan4k.untag & (1 << i)) ? "" : "t");
989 }
990
991 len += snprintf(buf + len, sizeof(smi->buf) - len,
992 "', members=%04x, untag=%04x, fid=%u",
993 vlan4k.member, vlan4k.untag, vlan4k.fid);
994
995 val->value.s = buf;
996 val->len = len;
997
998 return 0;
999 }
1000 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info);
1001
1002 int rtl8366_sw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
1003 {
1004 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1005 struct switch_port *port;
1006 struct rtl8366_vlan_4k vlan4k;
1007 int i;
1008
1009 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1010 return -EINVAL;
1011
1012 smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1013
1014 port = &val->value.ports[0];
1015 val->len = 0;
1016 for (i = 0; i < smi->num_ports; i++) {
1017 if (!(vlan4k.member & BIT(i)))
1018 continue;
1019
1020 port->id = i;
1021 port->flags = (vlan4k.untag & BIT(i)) ?
1022 0 : BIT(SWITCH_PORT_FLAG_TAGGED);
1023 val->len++;
1024 port++;
1025 }
1026 return 0;
1027 }
1028 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports);
1029
1030 int rtl8366_sw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
1031 {
1032 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1033 struct switch_port *port;
1034 u32 member = 0;
1035 u32 untag = 0;
1036 int err;
1037 int i;
1038
1039 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1040 return -EINVAL;
1041
1042 port = &val->value.ports[0];
1043 for (i = 0; i < val->len; i++, port++) {
1044 member |= BIT(port->id);
1045
1046 if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED)))
1047 untag |= BIT(port->id);
1048
1049 /*
1050 * To ensure that we have a valid MC entry for this VLAN,
1051 * initialize the port VLAN ID here.
1052 */
1053 err = rtl8366_set_pvid(smi, port->id, val->port_vlan);
1054 if (err < 0)
1055 return err;
1056 }
1057
1058 return rtl8366_set_vlan(smi, val->port_vlan, member, untag, 0);
1059 }
1060 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports);
1061
1062 int rtl8366_sw_get_vlan_fid(struct switch_dev *dev,
1063 const struct switch_attr *attr,
1064 struct switch_val *val)
1065 {
1066 struct rtl8366_vlan_4k vlan4k;
1067 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1068 int err;
1069
1070 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1071 return -EINVAL;
1072
1073 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1074 if (err)
1075 return err;
1076
1077 val->value.i = vlan4k.fid;
1078
1079 return 0;
1080 }
1081 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_fid);
1082
1083 int rtl8366_sw_set_vlan_fid(struct switch_dev *dev,
1084 const struct switch_attr *attr,
1085 struct switch_val *val)
1086 {
1087 struct rtl8366_vlan_4k vlan4k;
1088 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1089 int err;
1090
1091 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1092 return -EINVAL;
1093
1094 if (val->value.i < 0 || val->value.i > attr->max)
1095 return -EINVAL;
1096
1097 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1098 if (err)
1099 return err;
1100
1101 return rtl8366_set_vlan(smi, val->port_vlan,
1102 vlan4k.member,
1103 vlan4k.untag,
1104 val->value.i);
1105 }
1106 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_fid);
1107
1108 int rtl8366_sw_get_vlan_enable(struct switch_dev *dev,
1109 const struct switch_attr *attr,
1110 struct switch_val *val)
1111 {
1112 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1113
1114 if (attr->ofs > 2)
1115 return -EINVAL;
1116
1117 if (attr->ofs == 1)
1118 val->value.i = smi->vlan_enabled;
1119 else
1120 val->value.i = smi->vlan4k_enabled;
1121
1122 return 0;
1123 }
1124 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_enable);
1125
1126 int rtl8366_sw_set_vlan_enable(struct switch_dev *dev,
1127 const struct switch_attr *attr,
1128 struct switch_val *val)
1129 {
1130 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1131 int err;
1132
1133 if (attr->ofs > 2)
1134 return -EINVAL;
1135
1136 if (attr->ofs == 1)
1137 err = rtl8366_enable_vlan(smi, val->value.i);
1138 else
1139 err = rtl8366_enable_vlan4k(smi, val->value.i);
1140
1141 return err;
1142 }
1143 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_enable);
1144
1145 struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
1146 {
1147 struct rtl8366_smi *smi;
1148
1149 BUG_ON(!parent);
1150
1151 smi = kzalloc(sizeof(*smi), GFP_KERNEL);
1152 if (!smi) {
1153 dev_err(parent, "no memory for private data\n");
1154 return NULL;
1155 }
1156
1157 smi->parent = parent;
1158 return smi;
1159 }
1160 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
1161
1162 int rtl8366_smi_init(struct rtl8366_smi *smi)
1163 {
1164 int err;
1165
1166 if (!smi->ops)
1167 return -EINVAL;
1168
1169 err = gpio_request(smi->gpio_sda, dev_name(smi->parent));
1170 if (err) {
1171 dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
1172 smi->gpio_sda, err);
1173 goto err_out;
1174 }
1175
1176 err = gpio_request(smi->gpio_sck, dev_name(smi->parent));
1177 if (err) {
1178 dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
1179 smi->gpio_sck, err);
1180 goto err_free_sda;
1181 }
1182
1183 spin_lock_init(&smi->lock);
1184
1185 dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
1186 smi->gpio_sda, smi->gpio_sck);
1187
1188 err = smi->ops->detect(smi);
1189 if (err) {
1190 dev_err(smi->parent, "chip detection failed, err=%d\n", err);
1191 goto err_free_sck;
1192 }
1193
1194 err = smi->ops->setup(smi);
1195 if (err) {
1196 dev_err(smi->parent, "chip setup failed, err=%d\n", err);
1197 goto err_free_sck;
1198 }
1199
1200 err = rtl8366_init_vlan(smi);
1201 if (err) {
1202 dev_err(smi->parent, "VLAN initialization failed, err=%d\n",
1203 err);
1204 goto err_disable_hw;
1205 }
1206
1207 err = rtl8366_enable_all_ports(smi, 1);
1208 if (err)
1209 goto err_disable_hw;
1210
1211 err = rtl8366_smi_mii_init(smi);
1212 if (err)
1213 goto err_free_sck;
1214
1215 rtl8366_debugfs_init(smi);
1216
1217 return 0;
1218
1219 err_free_sck:
1220 gpio_free(smi->gpio_sck);
1221 err_free_sda:
1222 gpio_free(smi->gpio_sda);
1223 err_out:
1224 return err;
1225 }
1226 EXPORT_SYMBOL_GPL(rtl8366_smi_init);
1227
1228 void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
1229 {
1230 rtl8366_debugfs_remove(smi);
1231 rtl8366_smi_mii_cleanup(smi);
1232 gpio_free(smi->gpio_sck);
1233 gpio_free(smi->gpio_sda);
1234 }
1235 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
1236
1237 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
1238 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1239 MODULE_LICENSE("GPL v2");
OpenWrt Source Repository