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[package] rename kmod-switch-ip175c package to kmod-switch-ip17xx
[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 int rtl8366_reset_vlan(struct rtl8366_smi *smi)
452 {
453 struct rtl8366_vlan_mc vlanmc;
454 int err;
455 int i;
456
457 /* clear VLAN member configurations */
458 vlanmc.vid = 0;
459 vlanmc.priority = 0;
460 vlanmc.member = 0;
461 vlanmc.untag = 0;
462 vlanmc.fid = 0;
463 for (i = 0; i < smi->num_vlan_mc; i++) {
464 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
465 if (err)
466 return err;
467 }
468
469 for (i = 0; i < smi->num_ports; i++) {
470 if (i == smi->cpu_port)
471 continue;
472
473 err = rtl8366_set_vlan(smi, (i + 1),
474 (1 << i) | (1 << smi->cpu_port),
475 (1 << i) | (1 << smi->cpu_port),
476 0);
477 if (err)
478 return err;
479
480 err = rtl8366_set_pvid(smi, i, (i + 1));
481 if (err)
482 return err;
483 }
484
485 return 0;
486 }
487 EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
488
489 #ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
490 int rtl8366_debugfs_open(struct inode *inode, struct file *file)
491 {
492 file->private_data = inode->i_private;
493 return 0;
494 }
495 EXPORT_SYMBOL_GPL(rtl8366_debugfs_open);
496
497 static ssize_t rtl8366_read_debugfs_vlan_mc(struct file *file,
498 char __user *user_buf,
499 size_t count, loff_t *ppos)
500 {
501 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
502 int i, len = 0;
503 char *buf = smi->buf;
504
505 len += snprintf(buf + len, sizeof(smi->buf) - len,
506 "%2s %6s %4s %6s %6s %3s\n",
507 "id", "vid","prio", "member", "untag", "fid");
508
509 for (i = 0; i < smi->num_vlan_mc; ++i) {
510 struct rtl8366_vlan_mc vlanmc;
511
512 smi->ops->get_vlan_mc(smi, i, &vlanmc);
513
514 len += snprintf(buf + len, sizeof(smi->buf) - len,
515 "%2d %6d %4d 0x%04x 0x%04x %3d\n",
516 i, vlanmc.vid, vlanmc.priority,
517 vlanmc.member, vlanmc.untag, vlanmc.fid);
518 }
519
520 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
521 }
522
523 static ssize_t rtl8366_read_debugfs_pvid(struct file *file,
524 char __user *user_buf,
525 size_t count, loff_t *ppos)
526 {
527 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
528 char *buf = smi->buf;
529 int len = 0;
530 int i;
531
532 len += snprintf(buf + len, sizeof(smi->buf) - len, "%4s %4s\n",
533 "port", "pvid");
534
535 for (i = 0; i < smi->num_ports; i++) {
536 int pvid;
537 int err;
538
539 err = rtl8366_get_pvid(smi, i, &pvid);
540 if (err)
541 len += snprintf(buf + len, sizeof(smi->buf) - len,
542 "%4d error\n", i);
543 else
544 len += snprintf(buf + len, sizeof(smi->buf) - len,
545 "%4d %4d\n", i, pvid);
546 }
547
548 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
549 }
550
551 static ssize_t rtl8366_read_debugfs_reg(struct file *file,
552 char __user *user_buf,
553 size_t count, loff_t *ppos)
554 {
555 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
556 u32 t, reg = smi->dbg_reg;
557 int err, len = 0;
558 char *buf = smi->buf;
559
560 memset(buf, '\0', sizeof(smi->buf));
561
562 err = rtl8366_smi_read_reg(smi, reg, &t);
563 if (err) {
564 len += snprintf(buf, sizeof(smi->buf),
565 "Read failed (reg: 0x%04x)\n", reg);
566 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
567 }
568
569 len += snprintf(buf, sizeof(smi->buf), "reg = 0x%04x, val = 0x%04x\n",
570 reg, t);
571
572 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
573 }
574
575 static ssize_t rtl8366_write_debugfs_reg(struct file *file,
576 const char __user *user_buf,
577 size_t count, loff_t *ppos)
578 {
579 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
580 unsigned long data;
581 u32 reg = smi->dbg_reg;
582 int err;
583 size_t len;
584 char *buf = smi->buf;
585
586 len = min(count, sizeof(smi->buf) - 1);
587 if (copy_from_user(buf, user_buf, len)) {
588 dev_err(smi->parent, "copy from user failed\n");
589 return -EFAULT;
590 }
591
592 buf[len] = '\0';
593 if (len > 0 && buf[len - 1] == '\n')
594 buf[len - 1] = '\0';
595
596
597 if (strict_strtoul(buf, 16, &data)) {
598 dev_err(smi->parent, "Invalid reg value %s\n", buf);
599 } else {
600 err = rtl8366_smi_write_reg(smi, reg, data);
601 if (err) {
602 dev_err(smi->parent,
603 "writing reg 0x%04x val 0x%04lx failed\n",
604 reg, data);
605 }
606 }
607
608 return count;
609 }
610
611 static ssize_t rtl8366_read_debugfs_mibs(struct file *file,
612 char __user *user_buf,
613 size_t count, loff_t *ppos)
614 {
615 struct rtl8366_smi *smi = file->private_data;
616 int i, j, len = 0;
617 char *buf = smi->buf;
618
619 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s",
620 "Counter");
621
622 for (i = 0; i < smi->num_ports; i++) {
623 char port_buf[10];
624
625 snprintf(port_buf, sizeof(port_buf), "Port %d", i);
626 len += snprintf(buf + len, sizeof(smi->buf) - len, " %12s",
627 port_buf);
628 }
629 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
630
631 for (i = 0; i < smi->num_mib_counters; i++) {
632 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s ",
633 smi->mib_counters[i].name);
634 for (j = 0; j < smi->num_ports; j++) {
635 unsigned long long counter = 0;
636
637 if (!smi->ops->get_mib_counter(smi, i, j, &counter))
638 len += snprintf(buf + len,
639 sizeof(smi->buf) - len,
640 "%12llu ", counter);
641 else
642 len += snprintf(buf + len,
643 sizeof(smi->buf) - len,
644 "%12s ", "error");
645 }
646 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
647 }
648
649 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
650 }
651
652 static const struct file_operations fops_rtl8366_regs = {
653 .read = rtl8366_read_debugfs_reg,
654 .write = rtl8366_write_debugfs_reg,
655 .open = rtl8366_debugfs_open,
656 .owner = THIS_MODULE
657 };
658
659 static const struct file_operations fops_rtl8366_vlan_mc = {
660 .read = rtl8366_read_debugfs_vlan_mc,
661 .open = rtl8366_debugfs_open,
662 .owner = THIS_MODULE
663 };
664
665 static const struct file_operations fops_rtl8366_pvid = {
666 .read = rtl8366_read_debugfs_pvid,
667 .open = rtl8366_debugfs_open,
668 .owner = THIS_MODULE
669 };
670
671 static const struct file_operations fops_rtl8366_mibs = {
672 .read = rtl8366_read_debugfs_mibs,
673 .open = rtl8366_debugfs_open,
674 .owner = THIS_MODULE
675 };
676
677 static void rtl8366_debugfs_init(struct rtl8366_smi *smi)
678 {
679 struct dentry *node;
680 struct dentry *root;
681
682 if (!smi->debugfs_root)
683 smi->debugfs_root = debugfs_create_dir(dev_name(smi->parent),
684 NULL);
685
686 if (!smi->debugfs_root) {
687 dev_err(smi->parent, "Unable to create debugfs dir\n");
688 return;
689 }
690 root = smi->debugfs_root;
691
692 node = debugfs_create_x16("reg", S_IRUGO | S_IWUSR, root,
693 &smi->dbg_reg);
694 if (!node) {
695 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
696 "reg");
697 return;
698 }
699
700 node = debugfs_create_file("val", S_IRUGO | S_IWUSR, root, smi,
701 &fops_rtl8366_regs);
702 if (!node) {
703 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
704 "val");
705 return;
706 }
707
708 node = debugfs_create_file("vlan_mc", S_IRUSR, root, smi,
709 &fops_rtl8366_vlan_mc);
710 if (!node) {
711 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
712 "vlan_mc");
713 return;
714 }
715
716 node = debugfs_create_file("pvid", S_IRUSR, root, smi,
717 &fops_rtl8366_pvid);
718 if (!node) {
719 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
720 "pvid");
721 return;
722 }
723
724 node = debugfs_create_file("mibs", S_IRUSR, smi->debugfs_root, smi,
725 &fops_rtl8366_mibs);
726 if (!node)
727 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
728 "mibs");
729 }
730
731 static void rtl8366_debugfs_remove(struct rtl8366_smi *smi)
732 {
733 if (smi->debugfs_root) {
734 debugfs_remove_recursive(smi->debugfs_root);
735 smi->debugfs_root = NULL;
736 }
737 }
738 #else
739 static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
740 static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
741 #endif /* CONFIG_RTL8366S_PHY_DEBUG_FS */
742
743 static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
744 {
745 int ret;
746 int i;
747
748 smi->mii_bus = mdiobus_alloc();
749 if (smi->mii_bus == NULL) {
750 ret = -ENOMEM;
751 goto err;
752 }
753
754 smi->mii_bus->priv = (void *) smi;
755 smi->mii_bus->name = dev_name(smi->parent);
756 smi->mii_bus->read = smi->ops->mii_read;
757 smi->mii_bus->write = smi->ops->mii_write;
758 snprintf(smi->mii_bus->id, MII_BUS_ID_SIZE, "%s",
759 dev_name(smi->parent));
760 smi->mii_bus->parent = smi->parent;
761 smi->mii_bus->phy_mask = ~(0x1f);
762 smi->mii_bus->irq = smi->mii_irq;
763 for (i = 0; i < PHY_MAX_ADDR; i++)
764 smi->mii_irq[i] = PHY_POLL;
765
766 ret = mdiobus_register(smi->mii_bus);
767 if (ret)
768 goto err_free;
769
770 return 0;
771
772 err_free:
773 mdiobus_free(smi->mii_bus);
774 err:
775 return ret;
776 }
777
778 static void rtl8366_smi_mii_cleanup(struct rtl8366_smi *smi)
779 {
780 mdiobus_unregister(smi->mii_bus);
781 mdiobus_free(smi->mii_bus);
782 }
783
784 int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
785 {
786 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
787 return rtl8366_get_pvid(smi, port, val);
788 }
789 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid);
790
791 int rtl8366_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
792 {
793 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
794 return rtl8366_set_pvid(smi, port, val);
795 }
796 EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid);
797
798 int rtl8366_sw_get_port_mib(struct switch_dev *dev,
799 const struct switch_attr *attr,
800 struct switch_val *val)
801 {
802 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
803 int i, len = 0;
804 unsigned long long counter = 0;
805 char *buf = smi->buf;
806
807 if (val->port_vlan >= smi->num_ports)
808 return -EINVAL;
809
810 len += snprintf(buf + len, sizeof(smi->buf) - len,
811 "Port %d MIB counters\n",
812 val->port_vlan);
813
814 for (i = 0; i < smi->num_mib_counters; ++i) {
815 len += snprintf(buf + len, sizeof(smi->buf) - len,
816 "%-36s: ", smi->mib_counters[i].name);
817 if (!smi->ops->get_mib_counter(smi, i, val->port_vlan,
818 &counter))
819 len += snprintf(buf + len, sizeof(smi->buf) - len,
820 "%llu\n", counter);
821 else
822 len += snprintf(buf + len, sizeof(smi->buf) - len,
823 "%s\n", "error");
824 }
825
826 val->value.s = buf;
827 val->len = len;
828 return 0;
829 }
830 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
831
832 int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
833 const struct switch_attr *attr,
834 struct switch_val *val)
835 {
836 int i;
837 u32 len = 0;
838 struct rtl8366_vlan_4k vlan4k;
839 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
840 char *buf = smi->buf;
841 int err;
842
843 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
844 return -EINVAL;
845
846 memset(buf, '\0', sizeof(smi->buf));
847
848 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
849 if (err)
850 return err;
851
852 len += snprintf(buf + len, sizeof(smi->buf) - len,
853 "VLAN %d: Ports: '", vlan4k.vid);
854
855 for (i = 0; i < smi->num_ports; i++) {
856 if (!(vlan4k.member & (1 << i)))
857 continue;
858
859 len += snprintf(buf + len, sizeof(smi->buf) - len, "%d%s", i,
860 (vlan4k.untag & (1 << i)) ? "" : "t");
861 }
862
863 len += snprintf(buf + len, sizeof(smi->buf) - len,
864 "', members=%04x, untag=%04x, fid=%u",
865 vlan4k.member, vlan4k.untag, vlan4k.fid);
866
867 val->value.s = buf;
868 val->len = len;
869
870 return 0;
871 }
872 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info);
873
874 int rtl8366_sw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
875 {
876 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
877 struct switch_port *port;
878 struct rtl8366_vlan_4k vlan4k;
879 int i;
880
881 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
882 return -EINVAL;
883
884 smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
885
886 port = &val->value.ports[0];
887 val->len = 0;
888 for (i = 0; i < smi->num_ports; i++) {
889 if (!(vlan4k.member & BIT(i)))
890 continue;
891
892 port->id = i;
893 port->flags = (vlan4k.untag & BIT(i)) ?
894 0 : BIT(SWITCH_PORT_FLAG_TAGGED);
895 val->len++;
896 port++;
897 }
898 return 0;
899 }
900 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports);
901
902 int rtl8366_sw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
903 {
904 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
905 struct switch_port *port;
906 u32 member = 0;
907 u32 untag = 0;
908 int i;
909
910 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
911 return -EINVAL;
912
913 port = &val->value.ports[0];
914 for (i = 0; i < val->len; i++, port++) {
915 member |= BIT(port->id);
916
917 if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED)))
918 untag |= BIT(port->id);
919 }
920
921 return rtl8366_set_vlan(smi, val->port_vlan, member, untag, 0);
922 }
923 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports);
924
925 struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
926 {
927 struct rtl8366_smi *smi;
928
929 BUG_ON(!parent);
930
931 smi = kzalloc(sizeof(*smi), GFP_KERNEL);
932 if (!smi) {
933 dev_err(parent, "no memory for private data\n");
934 return NULL;
935 }
936
937 smi->parent = parent;
938 return smi;
939 }
940 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
941
942 int rtl8366_smi_init(struct rtl8366_smi *smi)
943 {
944 int err;
945
946 if (!smi->ops)
947 return -EINVAL;
948
949 err = gpio_request(smi->gpio_sda, dev_name(smi->parent));
950 if (err) {
951 dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
952 smi->gpio_sda, err);
953 goto err_out;
954 }
955
956 err = gpio_request(smi->gpio_sck, dev_name(smi->parent));
957 if (err) {
958 dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
959 smi->gpio_sck, err);
960 goto err_free_sda;
961 }
962
963 spin_lock_init(&smi->lock);
964
965 dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
966 smi->gpio_sda, smi->gpio_sck);
967
968 err = smi->ops->detect(smi);
969 if (err) {
970 dev_err(smi->parent, "chip detection failed, err=%d\n", err);
971 goto err_free_sck;
972 }
973
974 err = smi->ops->setup(smi);
975 if (err) {
976 dev_err(smi->parent, "chip setup failed, err=%d\n", err);
977 goto err_free_sck;
978 }
979
980 err = rtl8366_smi_mii_init(smi);
981 if (err)
982 goto err_free_sck;
983
984 rtl8366_debugfs_init(smi);
985
986 return 0;
987
988 err_free_sck:
989 gpio_free(smi->gpio_sck);
990 err_free_sda:
991 gpio_free(smi->gpio_sda);
992 err_out:
993 return err;
994 }
995 EXPORT_SYMBOL_GPL(rtl8366_smi_init);
996
997 void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
998 {
999 rtl8366_debugfs_remove(smi);
1000 rtl8366_smi_mii_cleanup(smi);
1001 gpio_free(smi->gpio_sck);
1002 gpio_free(smi->gpio_sda);
1003 }
1004 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
1005
1006 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
1007 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1008 MODULE_LICENSE("GPL v2");
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