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generic: ar8216: add a helper function for writing PHY debug registers
[openwrt.git] / target / linux / generic / files / drivers / net / phy / rtl8366s.c
1 /*
2 * Platform driver for the Realtek RTL8366S ethernet switch
3 *
4 * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/delay.h>
17 #include <linux/skbuff.h>
18 #include <linux/rtl8366.h>
19
20 #include "rtl8366_smi.h"
21
22 #define RTL8366S_DRIVER_DESC "Realtek RTL8366S ethernet switch driver"
23 #define RTL8366S_DRIVER_VER "0.2.2"
24
25 #define RTL8366S_PHY_NO_MAX 4
26 #define RTL8366S_PHY_PAGE_MAX 7
27 #define RTL8366S_PHY_ADDR_MAX 31
28
29 /* Switch Global Configuration register */
30 #define RTL8366S_SGCR 0x0000
31 #define RTL8366S_SGCR_EN_BC_STORM_CTRL BIT(0)
32 #define RTL8366S_SGCR_MAX_LENGTH(_x) (_x << 4)
33 #define RTL8366S_SGCR_MAX_LENGTH_MASK RTL8366S_SGCR_MAX_LENGTH(0x3)
34 #define RTL8366S_SGCR_MAX_LENGTH_1522 RTL8366S_SGCR_MAX_LENGTH(0x0)
35 #define RTL8366S_SGCR_MAX_LENGTH_1536 RTL8366S_SGCR_MAX_LENGTH(0x1)
36 #define RTL8366S_SGCR_MAX_LENGTH_1552 RTL8366S_SGCR_MAX_LENGTH(0x2)
37 #define RTL8366S_SGCR_MAX_LENGTH_16000 RTL8366S_SGCR_MAX_LENGTH(0x3)
38 #define RTL8366S_SGCR_EN_VLAN BIT(13)
39
40 /* Port Enable Control register */
41 #define RTL8366S_PECR 0x0001
42
43 /* Switch Security Control registers */
44 #define RTL8366S_SSCR0 0x0002
45 #define RTL8366S_SSCR1 0x0003
46 #define RTL8366S_SSCR2 0x0004
47 #define RTL8366S_SSCR2_DROP_UNKNOWN_DA BIT(0)
48
49 #define RTL8366S_RESET_CTRL_REG 0x0100
50 #define RTL8366S_CHIP_CTRL_RESET_HW 1
51 #define RTL8366S_CHIP_CTRL_RESET_SW (1 << 1)
52
53 #define RTL8366S_CHIP_VERSION_CTRL_REG 0x0104
54 #define RTL8366S_CHIP_VERSION_MASK 0xf
55 #define RTL8366S_CHIP_ID_REG 0x0105
56 #define RTL8366S_CHIP_ID_8366 0x8366
57
58 /* PHY registers control */
59 #define RTL8366S_PHY_ACCESS_CTRL_REG 0x8028
60 #define RTL8366S_PHY_ACCESS_DATA_REG 0x8029
61
62 #define RTL8366S_PHY_CTRL_READ 1
63 #define RTL8366S_PHY_CTRL_WRITE 0
64
65 #define RTL8366S_PHY_REG_MASK 0x1f
66 #define RTL8366S_PHY_PAGE_OFFSET 5
67 #define RTL8366S_PHY_PAGE_MASK (0x7 << 5)
68 #define RTL8366S_PHY_NO_OFFSET 9
69 #define RTL8366S_PHY_NO_MASK (0x1f << 9)
70
71 /* LED control registers */
72 #define RTL8366S_LED_BLINKRATE_REG 0x0420
73 #define RTL8366S_LED_BLINKRATE_BIT 0
74 #define RTL8366S_LED_BLINKRATE_MASK 0x0007
75
76 #define RTL8366S_LED_CTRL_REG 0x0421
77 #define RTL8366S_LED_0_1_CTRL_REG 0x0422
78 #define RTL8366S_LED_2_3_CTRL_REG 0x0423
79
80 #define RTL8366S_MIB_COUNT 33
81 #define RTL8366S_GLOBAL_MIB_COUNT 1
82 #define RTL8366S_MIB_COUNTER_PORT_OFFSET 0x0040
83 #define RTL8366S_MIB_COUNTER_BASE 0x1000
84 #define RTL8366S_MIB_COUNTER_PORT_OFFSET2 0x0008
85 #define RTL8366S_MIB_COUNTER_BASE2 0x1180
86 #define RTL8366S_MIB_CTRL_REG 0x11F0
87 #define RTL8366S_MIB_CTRL_USER_MASK 0x01FF
88 #define RTL8366S_MIB_CTRL_BUSY_MASK 0x0001
89 #define RTL8366S_MIB_CTRL_RESET_MASK 0x0002
90
91 #define RTL8366S_MIB_CTRL_GLOBAL_RESET_MASK 0x0004
92 #define RTL8366S_MIB_CTRL_PORT_RESET_BIT 0x0003
93 #define RTL8366S_MIB_CTRL_PORT_RESET_MASK 0x01FC
94
95
96 #define RTL8366S_PORT_VLAN_CTRL_BASE 0x0058
97 #define RTL8366S_PORT_VLAN_CTRL_REG(_p) \
98 (RTL8366S_PORT_VLAN_CTRL_BASE + (_p) / 4)
99 #define RTL8366S_PORT_VLAN_CTRL_MASK 0xf
100 #define RTL8366S_PORT_VLAN_CTRL_SHIFT(_p) (4 * ((_p) % 4))
101
102
103 #define RTL8366S_VLAN_TABLE_READ_BASE 0x018B
104 #define RTL8366S_VLAN_TABLE_WRITE_BASE 0x0185
105
106 #define RTL8366S_VLAN_TB_CTRL_REG 0x010F
107
108 #define RTL8366S_TABLE_ACCESS_CTRL_REG 0x0180
109 #define RTL8366S_TABLE_VLAN_READ_CTRL 0x0E01
110 #define RTL8366S_TABLE_VLAN_WRITE_CTRL 0x0F01
111
112 #define RTL8366S_VLAN_MC_BASE(_x) (0x0016 + (_x) * 2)
113
114 #define RTL8366S_VLAN_MEMBERINGRESS_REG 0x0379
115
116 #define RTL8366S_PORT_LINK_STATUS_BASE 0x0060
117 #define RTL8366S_PORT_STATUS_SPEED_MASK 0x0003
118 #define RTL8366S_PORT_STATUS_DUPLEX_MASK 0x0004
119 #define RTL8366S_PORT_STATUS_LINK_MASK 0x0010
120 #define RTL8366S_PORT_STATUS_TXPAUSE_MASK 0x0020
121 #define RTL8366S_PORT_STATUS_RXPAUSE_MASK 0x0040
122 #define RTL8366S_PORT_STATUS_AN_MASK 0x0080
123
124
125 #define RTL8366S_PORT_NUM_CPU 5
126 #define RTL8366S_NUM_PORTS 6
127 #define RTL8366S_NUM_VLANS 16
128 #define RTL8366S_NUM_LEDGROUPS 4
129 #define RTL8366S_NUM_VIDS 4096
130 #define RTL8366S_PRIORITYMAX 7
131 #define RTL8366S_FIDMAX 7
132
133
134 #define RTL8366S_PORT_1 (1 << 0) /* In userspace port 0 */
135 #define RTL8366S_PORT_2 (1 << 1) /* In userspace port 1 */
136 #define RTL8366S_PORT_3 (1 << 2) /* In userspace port 2 */
137 #define RTL8366S_PORT_4 (1 << 3) /* In userspace port 3 */
138
139 #define RTL8366S_PORT_UNKNOWN (1 << 4) /* No known connection */
140 #define RTL8366S_PORT_CPU (1 << 5) /* CPU port */
141
142 #define RTL8366S_PORT_ALL (RTL8366S_PORT_1 | \
143 RTL8366S_PORT_2 | \
144 RTL8366S_PORT_3 | \
145 RTL8366S_PORT_4 | \
146 RTL8366S_PORT_UNKNOWN | \
147 RTL8366S_PORT_CPU)
148
149 #define RTL8366S_PORT_ALL_BUT_CPU (RTL8366S_PORT_1 | \
150 RTL8366S_PORT_2 | \
151 RTL8366S_PORT_3 | \
152 RTL8366S_PORT_4 | \
153 RTL8366S_PORT_UNKNOWN)
154
155 #define RTL8366S_PORT_ALL_EXTERNAL (RTL8366S_PORT_1 | \
156 RTL8366S_PORT_2 | \
157 RTL8366S_PORT_3 | \
158 RTL8366S_PORT_4)
159
160 #define RTL8366S_PORT_ALL_INTERNAL (RTL8366S_PORT_UNKNOWN | \
161 RTL8366S_PORT_CPU)
162
163 #define RTL8366S_VLAN_VID_MASK 0xfff
164 #define RTL8366S_VLAN_PRIORITY_SHIFT 12
165 #define RTL8366S_VLAN_PRIORITY_MASK 0x7
166 #define RTL8366S_VLAN_MEMBER_MASK 0x3f
167 #define RTL8366S_VLAN_UNTAG_SHIFT 6
168 #define RTL8366S_VLAN_UNTAG_MASK 0x3f
169 #define RTL8366S_VLAN_FID_SHIFT 12
170 #define RTL8366S_VLAN_FID_MASK 0x7
171
172 static struct rtl8366_mib_counter rtl8366s_mib_counters[] = {
173 { 0, 0, 4, "IfInOctets" },
174 { 0, 4, 4, "EtherStatsOctets" },
175 { 0, 8, 2, "EtherStatsUnderSizePkts" },
176 { 0, 10, 2, "EtherFragments" },
177 { 0, 12, 2, "EtherStatsPkts64Octets" },
178 { 0, 14, 2, "EtherStatsPkts65to127Octets" },
179 { 0, 16, 2, "EtherStatsPkts128to255Octets" },
180 { 0, 18, 2, "EtherStatsPkts256to511Octets" },
181 { 0, 20, 2, "EtherStatsPkts512to1023Octets" },
182 { 0, 22, 2, "EtherStatsPkts1024to1518Octets" },
183 { 0, 24, 2, "EtherOversizeStats" },
184 { 0, 26, 2, "EtherStatsJabbers" },
185 { 0, 28, 2, "IfInUcastPkts" },
186 { 0, 30, 2, "EtherStatsMulticastPkts" },
187 { 0, 32, 2, "EtherStatsBroadcastPkts" },
188 { 0, 34, 2, "EtherStatsDropEvents" },
189 { 0, 36, 2, "Dot3StatsFCSErrors" },
190 { 0, 38, 2, "Dot3StatsSymbolErrors" },
191 { 0, 40, 2, "Dot3InPauseFrames" },
192 { 0, 42, 2, "Dot3ControlInUnknownOpcodes" },
193 { 0, 44, 4, "IfOutOctets" },
194 { 0, 48, 2, "Dot3StatsSingleCollisionFrames" },
195 { 0, 50, 2, "Dot3StatMultipleCollisionFrames" },
196 { 0, 52, 2, "Dot3sDeferredTransmissions" },
197 { 0, 54, 2, "Dot3StatsLateCollisions" },
198 { 0, 56, 2, "EtherStatsCollisions" },
199 { 0, 58, 2, "Dot3StatsExcessiveCollisions" },
200 { 0, 60, 2, "Dot3OutPauseFrames" },
201 { 0, 62, 2, "Dot1dBasePortDelayExceededDiscards" },
202
203 /*
204 * The following counters are accessible at a different
205 * base address.
206 */
207 { 1, 0, 2, "Dot1dTpPortInDiscards" },
208 { 1, 2, 2, "IfOutUcastPkts" },
209 { 1, 4, 2, "IfOutMulticastPkts" },
210 { 1, 6, 2, "IfOutBroadcastPkts" },
211 };
212
213 #define REG_WR(_smi, _reg, _val) \
214 do { \
215 err = rtl8366_smi_write_reg(_smi, _reg, _val); \
216 if (err) \
217 return err; \
218 } while (0)
219
220 #define REG_RMW(_smi, _reg, _mask, _val) \
221 do { \
222 err = rtl8366_smi_rmwr(_smi, _reg, _mask, _val); \
223 if (err) \
224 return err; \
225 } while (0)
226
227 static int rtl8366s_reset_chip(struct rtl8366_smi *smi)
228 {
229 int timeout = 10;
230 u32 data;
231
232 rtl8366_smi_write_reg_noack(smi, RTL8366S_RESET_CTRL_REG,
233 RTL8366S_CHIP_CTRL_RESET_HW);
234 do {
235 msleep(1);
236 if (rtl8366_smi_read_reg(smi, RTL8366S_RESET_CTRL_REG, &data))
237 return -EIO;
238
239 if (!(data & RTL8366S_CHIP_CTRL_RESET_HW))
240 break;
241 } while (--timeout);
242
243 if (!timeout) {
244 printk("Timeout waiting for the switch to reset\n");
245 return -EIO;
246 }
247
248 return 0;
249 }
250
251 static int rtl8366s_hw_init(struct rtl8366_smi *smi)
252 {
253 struct rtl8366_platform_data *pdata;
254 int err;
255
256 pdata = smi->parent->platform_data;
257 if (pdata->num_initvals && pdata->initvals) {
258 unsigned i;
259
260 dev_info(smi->parent, "applying initvals\n");
261 for (i = 0; i < pdata->num_initvals; i++)
262 REG_WR(smi, pdata->initvals[i].reg,
263 pdata->initvals[i].val);
264 }
265
266 /* set maximum packet length to 1536 bytes */
267 REG_RMW(smi, RTL8366S_SGCR, RTL8366S_SGCR_MAX_LENGTH_MASK,
268 RTL8366S_SGCR_MAX_LENGTH_1536);
269
270 /* enable learning for all ports */
271 REG_WR(smi, RTL8366S_SSCR0, 0);
272
273 /* enable auto ageing for all ports */
274 REG_WR(smi, RTL8366S_SSCR1, 0);
275
276 /*
277 * discard VLAN tagged packets if the port is not a member of
278 * the VLAN with which the packets is associated.
279 */
280 REG_WR(smi, RTL8366S_VLAN_MEMBERINGRESS_REG, RTL8366S_PORT_ALL);
281
282 /* don't drop packets whose DA has not been learned */
283 REG_RMW(smi, RTL8366S_SSCR2, RTL8366S_SSCR2_DROP_UNKNOWN_DA, 0);
284
285 return 0;
286 }
287
288 static int rtl8366s_read_phy_reg(struct rtl8366_smi *smi,
289 u32 phy_no, u32 page, u32 addr, u32 *data)
290 {
291 u32 reg;
292 int ret;
293
294 if (phy_no > RTL8366S_PHY_NO_MAX)
295 return -EINVAL;
296
297 if (page > RTL8366S_PHY_PAGE_MAX)
298 return -EINVAL;
299
300 if (addr > RTL8366S_PHY_ADDR_MAX)
301 return -EINVAL;
302
303 ret = rtl8366_smi_write_reg(smi, RTL8366S_PHY_ACCESS_CTRL_REG,
304 RTL8366S_PHY_CTRL_READ);
305 if (ret)
306 return ret;
307
308 reg = 0x8000 | (1 << (phy_no + RTL8366S_PHY_NO_OFFSET)) |
309 ((page << RTL8366S_PHY_PAGE_OFFSET) & RTL8366S_PHY_PAGE_MASK) |
310 (addr & RTL8366S_PHY_REG_MASK);
311
312 ret = rtl8366_smi_write_reg(smi, reg, 0);
313 if (ret)
314 return ret;
315
316 ret = rtl8366_smi_read_reg(smi, RTL8366S_PHY_ACCESS_DATA_REG, data);
317 if (ret)
318 return ret;
319
320 return 0;
321 }
322
323 static int rtl8366s_write_phy_reg(struct rtl8366_smi *smi,
324 u32 phy_no, u32 page, u32 addr, u32 data)
325 {
326 u32 reg;
327 int ret;
328
329 if (phy_no > RTL8366S_PHY_NO_MAX)
330 return -EINVAL;
331
332 if (page > RTL8366S_PHY_PAGE_MAX)
333 return -EINVAL;
334
335 if (addr > RTL8366S_PHY_ADDR_MAX)
336 return -EINVAL;
337
338 ret = rtl8366_smi_write_reg(smi, RTL8366S_PHY_ACCESS_CTRL_REG,
339 RTL8366S_PHY_CTRL_WRITE);
340 if (ret)
341 return ret;
342
343 reg = 0x8000 | (1 << (phy_no + RTL8366S_PHY_NO_OFFSET)) |
344 ((page << RTL8366S_PHY_PAGE_OFFSET) & RTL8366S_PHY_PAGE_MASK) |
345 (addr & RTL8366S_PHY_REG_MASK);
346
347 ret = rtl8366_smi_write_reg(smi, reg, data);
348 if (ret)
349 return ret;
350
351 return 0;
352 }
353
354 static int rtl8366_get_mib_counter(struct rtl8366_smi *smi, int counter,
355 int port, unsigned long long *val)
356 {
357 int i;
358 int err;
359 u32 addr, data;
360 u64 mibvalue;
361
362 if (port > RTL8366S_NUM_PORTS || counter >= RTL8366S_MIB_COUNT)
363 return -EINVAL;
364
365 switch (rtl8366s_mib_counters[counter].base) {
366 case 0:
367 addr = RTL8366S_MIB_COUNTER_BASE +
368 RTL8366S_MIB_COUNTER_PORT_OFFSET * port;
369 break;
370
371 case 1:
372 addr = RTL8366S_MIB_COUNTER_BASE2 +
373 RTL8366S_MIB_COUNTER_PORT_OFFSET2 * port;
374 break;
375
376 default:
377 return -EINVAL;
378 }
379
380 addr += rtl8366s_mib_counters[counter].offset;
381
382 /*
383 * Writing access counter address first
384 * then ASIC will prepare 64bits counter wait for being retrived
385 */
386 data = 0; /* writing data will be discard by ASIC */
387 err = rtl8366_smi_write_reg(smi, addr, data);
388 if (err)
389 return err;
390
391 /* read MIB control register */
392 err = rtl8366_smi_read_reg(smi, RTL8366S_MIB_CTRL_REG, &data);
393 if (err)
394 return err;
395
396 if (data & RTL8366S_MIB_CTRL_BUSY_MASK)
397 return -EBUSY;
398
399 if (data & RTL8366S_MIB_CTRL_RESET_MASK)
400 return -EIO;
401
402 mibvalue = 0;
403 for (i = rtl8366s_mib_counters[counter].length; i > 0; i--) {
404 err = rtl8366_smi_read_reg(smi, addr + (i - 1), &data);
405 if (err)
406 return err;
407
408 mibvalue = (mibvalue << 16) | (data & 0xFFFF);
409 }
410
411 *val = mibvalue;
412 return 0;
413 }
414
415 static int rtl8366s_get_vlan_4k(struct rtl8366_smi *smi, u32 vid,
416 struct rtl8366_vlan_4k *vlan4k)
417 {
418 u32 data[2];
419 int err;
420 int i;
421
422 memset(vlan4k, '\0', sizeof(struct rtl8366_vlan_4k));
423
424 if (vid >= RTL8366S_NUM_VIDS)
425 return -EINVAL;
426
427 /* write VID */
428 err = rtl8366_smi_write_reg(smi, RTL8366S_VLAN_TABLE_WRITE_BASE,
429 vid & RTL8366S_VLAN_VID_MASK);
430 if (err)
431 return err;
432
433 /* write table access control word */
434 err = rtl8366_smi_write_reg(smi, RTL8366S_TABLE_ACCESS_CTRL_REG,
435 RTL8366S_TABLE_VLAN_READ_CTRL);
436 if (err)
437 return err;
438
439 for (i = 0; i < 2; i++) {
440 err = rtl8366_smi_read_reg(smi,
441 RTL8366S_VLAN_TABLE_READ_BASE + i,
442 &data[i]);
443 if (err)
444 return err;
445 }
446
447 vlan4k->vid = vid;
448 vlan4k->untag = (data[1] >> RTL8366S_VLAN_UNTAG_SHIFT) &
449 RTL8366S_VLAN_UNTAG_MASK;
450 vlan4k->member = data[1] & RTL8366S_VLAN_MEMBER_MASK;
451 vlan4k->fid = (data[1] >> RTL8366S_VLAN_FID_SHIFT) &
452 RTL8366S_VLAN_FID_MASK;
453
454 return 0;
455 }
456
457 static int rtl8366s_set_vlan_4k(struct rtl8366_smi *smi,
458 const struct rtl8366_vlan_4k *vlan4k)
459 {
460 u32 data[2];
461 int err;
462 int i;
463
464 if (vlan4k->vid >= RTL8366S_NUM_VIDS ||
465 vlan4k->member > RTL8366S_VLAN_MEMBER_MASK ||
466 vlan4k->untag > RTL8366S_VLAN_UNTAG_MASK ||
467 vlan4k->fid > RTL8366S_FIDMAX)
468 return -EINVAL;
469
470 data[0] = vlan4k->vid & RTL8366S_VLAN_VID_MASK;
471 data[1] = (vlan4k->member & RTL8366S_VLAN_MEMBER_MASK) |
472 ((vlan4k->untag & RTL8366S_VLAN_UNTAG_MASK) <<
473 RTL8366S_VLAN_UNTAG_SHIFT) |
474 ((vlan4k->fid & RTL8366S_VLAN_FID_MASK) <<
475 RTL8366S_VLAN_FID_SHIFT);
476
477 for (i = 0; i < 2; i++) {
478 err = rtl8366_smi_write_reg(smi,
479 RTL8366S_VLAN_TABLE_WRITE_BASE + i,
480 data[i]);
481 if (err)
482 return err;
483 }
484
485 /* write table access control word */
486 err = rtl8366_smi_write_reg(smi, RTL8366S_TABLE_ACCESS_CTRL_REG,
487 RTL8366S_TABLE_VLAN_WRITE_CTRL);
488
489 return err;
490 }
491
492 static int rtl8366s_get_vlan_mc(struct rtl8366_smi *smi, u32 index,
493 struct rtl8366_vlan_mc *vlanmc)
494 {
495 u32 data[2];
496 int err;
497 int i;
498
499 memset(vlanmc, '\0', sizeof(struct rtl8366_vlan_mc));
500
501 if (index >= RTL8366S_NUM_VLANS)
502 return -EINVAL;
503
504 for (i = 0; i < 2; i++) {
505 err = rtl8366_smi_read_reg(smi,
506 RTL8366S_VLAN_MC_BASE(index) + i,
507 &data[i]);
508 if (err)
509 return err;
510 }
511
512 vlanmc->vid = data[0] & RTL8366S_VLAN_VID_MASK;
513 vlanmc->priority = (data[0] >> RTL8366S_VLAN_PRIORITY_SHIFT) &
514 RTL8366S_VLAN_PRIORITY_MASK;
515 vlanmc->untag = (data[1] >> RTL8366S_VLAN_UNTAG_SHIFT) &
516 RTL8366S_VLAN_UNTAG_MASK;
517 vlanmc->member = data[1] & RTL8366S_VLAN_MEMBER_MASK;
518 vlanmc->fid = (data[1] >> RTL8366S_VLAN_FID_SHIFT) &
519 RTL8366S_VLAN_FID_MASK;
520
521 return 0;
522 }
523
524 static int rtl8366s_set_vlan_mc(struct rtl8366_smi *smi, u32 index,
525 const struct rtl8366_vlan_mc *vlanmc)
526 {
527 u32 data[2];
528 int err;
529 int i;
530
531 if (index >= RTL8366S_NUM_VLANS ||
532 vlanmc->vid >= RTL8366S_NUM_VIDS ||
533 vlanmc->priority > RTL8366S_PRIORITYMAX ||
534 vlanmc->member > RTL8366S_VLAN_MEMBER_MASK ||
535 vlanmc->untag > RTL8366S_VLAN_UNTAG_MASK ||
536 vlanmc->fid > RTL8366S_FIDMAX)
537 return -EINVAL;
538
539 data[0] = (vlanmc->vid & RTL8366S_VLAN_VID_MASK) |
540 ((vlanmc->priority & RTL8366S_VLAN_PRIORITY_MASK) <<
541 RTL8366S_VLAN_PRIORITY_SHIFT);
542 data[1] = (vlanmc->member & RTL8366S_VLAN_MEMBER_MASK) |
543 ((vlanmc->untag & RTL8366S_VLAN_UNTAG_MASK) <<
544 RTL8366S_VLAN_UNTAG_SHIFT) |
545 ((vlanmc->fid & RTL8366S_VLAN_FID_MASK) <<
546 RTL8366S_VLAN_FID_SHIFT);
547
548 for (i = 0; i < 2; i++) {
549 err = rtl8366_smi_write_reg(smi,
550 RTL8366S_VLAN_MC_BASE(index) + i,
551 data[i]);
552 if (err)
553 return err;
554 }
555
556 return 0;
557 }
558
559 static int rtl8366s_get_mc_index(struct rtl8366_smi *smi, int port, int *val)
560 {
561 u32 data;
562 int err;
563
564 if (port >= RTL8366S_NUM_PORTS)
565 return -EINVAL;
566
567 err = rtl8366_smi_read_reg(smi, RTL8366S_PORT_VLAN_CTRL_REG(port),
568 &data);
569 if (err)
570 return err;
571
572 *val = (data >> RTL8366S_PORT_VLAN_CTRL_SHIFT(port)) &
573 RTL8366S_PORT_VLAN_CTRL_MASK;
574
575 return 0;
576 }
577
578 static int rtl8366s_set_mc_index(struct rtl8366_smi *smi, int port, int index)
579 {
580 if (port >= RTL8366S_NUM_PORTS || index >= RTL8366S_NUM_VLANS)
581 return -EINVAL;
582
583 return rtl8366_smi_rmwr(smi, RTL8366S_PORT_VLAN_CTRL_REG(port),
584 RTL8366S_PORT_VLAN_CTRL_MASK <<
585 RTL8366S_PORT_VLAN_CTRL_SHIFT(port),
586 (index & RTL8366S_PORT_VLAN_CTRL_MASK) <<
587 RTL8366S_PORT_VLAN_CTRL_SHIFT(port));
588 }
589
590 static int rtl8366s_enable_vlan(struct rtl8366_smi *smi, int enable)
591 {
592 return rtl8366_smi_rmwr(smi, RTL8366S_SGCR, RTL8366S_SGCR_EN_VLAN,
593 (enable) ? RTL8366S_SGCR_EN_VLAN : 0);
594 }
595
596 static int rtl8366s_enable_vlan4k(struct rtl8366_smi *smi, int enable)
597 {
598 return rtl8366_smi_rmwr(smi, RTL8366S_VLAN_TB_CTRL_REG,
599 1, (enable) ? 1 : 0);
600 }
601
602 static int rtl8366s_is_vlan_valid(struct rtl8366_smi *smi, unsigned vlan)
603 {
604 unsigned max = RTL8366S_NUM_VLANS;
605
606 if (smi->vlan4k_enabled)
607 max = RTL8366S_NUM_VIDS - 1;
608
609 if (vlan == 0 || vlan >= max)
610 return 0;
611
612 return 1;
613 }
614
615 static int rtl8366s_enable_port(struct rtl8366_smi *smi, int port, int enable)
616 {
617 return rtl8366_smi_rmwr(smi, RTL8366S_PECR, (1 << port),
618 (enable) ? 0 : (1 << port));
619 }
620
621 static int rtl8366s_sw_reset_mibs(struct switch_dev *dev,
622 const struct switch_attr *attr,
623 struct switch_val *val)
624 {
625 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
626
627 return rtl8366_smi_rmwr(smi, RTL8366S_MIB_CTRL_REG, 0, (1 << 2));
628 }
629
630 static int rtl8366s_sw_get_blinkrate(struct switch_dev *dev,
631 const struct switch_attr *attr,
632 struct switch_val *val)
633 {
634 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
635 u32 data;
636
637 rtl8366_smi_read_reg(smi, RTL8366S_LED_BLINKRATE_REG, &data);
638
639 val->value.i = (data & (RTL8366S_LED_BLINKRATE_MASK));
640
641 return 0;
642 }
643
644 static int rtl8366s_sw_set_blinkrate(struct switch_dev *dev,
645 const struct switch_attr *attr,
646 struct switch_val *val)
647 {
648 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
649
650 if (val->value.i >= 6)
651 return -EINVAL;
652
653 return rtl8366_smi_rmwr(smi, RTL8366S_LED_BLINKRATE_REG,
654 RTL8366S_LED_BLINKRATE_MASK,
655 val->value.i);
656 }
657
658 static int rtl8366s_sw_get_max_length(struct switch_dev *dev,
659 const struct switch_attr *attr,
660 struct switch_val *val)
661 {
662 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
663 u32 data;
664
665 rtl8366_smi_read_reg(smi, RTL8366S_SGCR, &data);
666
667 val->value.i = ((data & (RTL8366S_SGCR_MAX_LENGTH_MASK)) >> 4);
668
669 return 0;
670 }
671
672 static int rtl8366s_sw_set_max_length(struct switch_dev *dev,
673 const struct switch_attr *attr,
674 struct switch_val *val)
675 {
676 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
677 char length_code;
678
679 switch (val->value.i) {
680 case 0:
681 length_code = RTL8366S_SGCR_MAX_LENGTH_1522;
682 break;
683 case 1:
684 length_code = RTL8366S_SGCR_MAX_LENGTH_1536;
685 break;
686 case 2:
687 length_code = RTL8366S_SGCR_MAX_LENGTH_1552;
688 break;
689 case 3:
690 length_code = RTL8366S_SGCR_MAX_LENGTH_16000;
691 break;
692 default:
693 return -EINVAL;
694 }
695
696 return rtl8366_smi_rmwr(smi, RTL8366S_SGCR,
697 RTL8366S_SGCR_MAX_LENGTH_MASK,
698 length_code);
699 }
700
701 static int rtl8366s_sw_get_learning_enable(struct switch_dev *dev,
702 const struct switch_attr *attr,
703 struct switch_val *val)
704 {
705 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
706 u32 data;
707
708 rtl8366_smi_read_reg(smi,RTL8366S_SSCR0, &data);
709 val->value.i = !data;
710
711 return 0;
712 }
713
714
715 static int rtl8366s_sw_set_learning_enable(struct switch_dev *dev,
716 const struct switch_attr *attr,
717 struct switch_val *val)
718 {
719 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
720 u32 portmask = 0;
721 int err = 0;
722
723 if (!val->value.i)
724 portmask = RTL8366S_PORT_ALL;
725
726 /* set learning for all ports */
727 REG_WR(smi, RTL8366S_SSCR0, portmask);
728
729 /* set auto ageing for all ports */
730 REG_WR(smi, RTL8366S_SSCR1, portmask);
731
732 return 0;
733 }
734
735 static int rtl8366s_sw_get_port_link(struct switch_dev *dev,
736 int port,
737 struct switch_port_link *link)
738 {
739 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
740 u32 data = 0;
741 u32 speed;
742
743 if (port >= RTL8366S_NUM_PORTS)
744 return -EINVAL;
745
746 rtl8366_smi_read_reg(smi, RTL8366S_PORT_LINK_STATUS_BASE + (port / 2),
747 &data);
748
749 if (port % 2)
750 data = data >> 8;
751
752 link->link = !!(data & RTL8366S_PORT_STATUS_LINK_MASK);
753 if (!link->link)
754 return 0;
755
756 link->duplex = !!(data & RTL8366S_PORT_STATUS_DUPLEX_MASK);
757 link->rx_flow = !!(data & RTL8366S_PORT_STATUS_RXPAUSE_MASK);
758 link->tx_flow = !!(data & RTL8366S_PORT_STATUS_TXPAUSE_MASK);
759 link->aneg = !!(data & RTL8366S_PORT_STATUS_AN_MASK);
760
761 speed = (data & RTL8366S_PORT_STATUS_SPEED_MASK);
762 switch (speed) {
763 case 0:
764 link->speed = SWITCH_PORT_SPEED_10;
765 break;
766 case 1:
767 link->speed = SWITCH_PORT_SPEED_100;
768 break;
769 case 2:
770 link->speed = SWITCH_PORT_SPEED_1000;
771 break;
772 default:
773 link->speed = SWITCH_PORT_SPEED_UNKNOWN;
774 break;
775 }
776
777 return 0;
778 }
779
780 static int rtl8366s_sw_set_port_led(struct switch_dev *dev,
781 const struct switch_attr *attr,
782 struct switch_val *val)
783 {
784 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
785 u32 data;
786 u32 mask;
787 u32 reg;
788
789 if (val->port_vlan >= RTL8366S_NUM_PORTS ||
790 (1 << val->port_vlan) == RTL8366S_PORT_UNKNOWN)
791 return -EINVAL;
792
793 if (val->port_vlan == RTL8366S_PORT_NUM_CPU) {
794 reg = RTL8366S_LED_BLINKRATE_REG;
795 mask = 0xF << 4;
796 data = val->value.i << 4;
797 } else {
798 reg = RTL8366S_LED_CTRL_REG;
799 mask = 0xF << (val->port_vlan * 4),
800 data = val->value.i << (val->port_vlan * 4);
801 }
802
803 return rtl8366_smi_rmwr(smi, reg, mask, data);
804 }
805
806 static int rtl8366s_sw_get_port_led(struct switch_dev *dev,
807 const struct switch_attr *attr,
808 struct switch_val *val)
809 {
810 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
811 u32 data = 0;
812
813 if (val->port_vlan >= RTL8366S_NUM_LEDGROUPS)
814 return -EINVAL;
815
816 rtl8366_smi_read_reg(smi, RTL8366S_LED_CTRL_REG, &data);
817 val->value.i = (data >> (val->port_vlan * 4)) & 0x000F;
818
819 return 0;
820 }
821
822 static int rtl8366s_sw_reset_port_mibs(struct switch_dev *dev,
823 const struct switch_attr *attr,
824 struct switch_val *val)
825 {
826 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
827
828 if (val->port_vlan >= RTL8366S_NUM_PORTS)
829 return -EINVAL;
830
831
832 return rtl8366_smi_rmwr(smi, RTL8366S_MIB_CTRL_REG,
833 0, (1 << (val->port_vlan + 3)));
834 }
835
836 static int rtl8366s_sw_reset_switch(struct switch_dev *dev)
837 {
838 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
839 int err;
840
841 err = rtl8366s_reset_chip(smi);
842 if (err)
843 return err;
844
845 err = rtl8366s_hw_init(smi);
846 if (err)
847 return err;
848
849 err = rtl8366_reset_vlan(smi);
850 if (err)
851 return err;
852
853 err = rtl8366_enable_vlan(smi, 1);
854 if (err)
855 return err;
856
857 return rtl8366_enable_all_ports(smi, 1);
858 }
859
860 static struct switch_attr rtl8366s_globals[] = {
861 {
862 .type = SWITCH_TYPE_INT,
863 .name = "enable_learning",
864 .description = "Enable learning, enable aging",
865 .set = rtl8366s_sw_set_learning_enable,
866 .get = rtl8366s_sw_get_learning_enable,
867 .max = 1,
868 }, {
869 .type = SWITCH_TYPE_INT,
870 .name = "enable_vlan",
871 .description = "Enable VLAN mode",
872 .set = rtl8366_sw_set_vlan_enable,
873 .get = rtl8366_sw_get_vlan_enable,
874 .max = 1,
875 .ofs = 1
876 }, {
877 .type = SWITCH_TYPE_INT,
878 .name = "enable_vlan4k",
879 .description = "Enable VLAN 4K mode",
880 .set = rtl8366_sw_set_vlan_enable,
881 .get = rtl8366_sw_get_vlan_enable,
882 .max = 1,
883 .ofs = 2
884 }, {
885 .type = SWITCH_TYPE_NOVAL,
886 .name = "reset_mibs",
887 .description = "Reset all MIB counters",
888 .set = rtl8366s_sw_reset_mibs,
889 }, {
890 .type = SWITCH_TYPE_INT,
891 .name = "blinkrate",
892 .description = "Get/Set LED blinking rate (0 = 43ms, 1 = 84ms,"
893 " 2 = 120ms, 3 = 170ms, 4 = 340ms, 5 = 670ms)",
894 .set = rtl8366s_sw_set_blinkrate,
895 .get = rtl8366s_sw_get_blinkrate,
896 .max = 5
897 }, {
898 .type = SWITCH_TYPE_INT,
899 .name = "max_length",
900 .description = "Get/Set the maximum length of valid packets"
901 " (0 = 1522, 1 = 1536, 2 = 1552, 3 = 16000 (9216?))",
902 .set = rtl8366s_sw_set_max_length,
903 .get = rtl8366s_sw_get_max_length,
904 .max = 3,
905 },
906 };
907
908 static struct switch_attr rtl8366s_port[] = {
909 {
910 .type = SWITCH_TYPE_NOVAL,
911 .name = "reset_mib",
912 .description = "Reset single port MIB counters",
913 .set = rtl8366s_sw_reset_port_mibs,
914 }, {
915 .type = SWITCH_TYPE_STRING,
916 .name = "mib",
917 .description = "Get MIB counters for port",
918 .max = 33,
919 .set = NULL,
920 .get = rtl8366_sw_get_port_mib,
921 }, {
922 .type = SWITCH_TYPE_INT,
923 .name = "led",
924 .description = "Get/Set port group (0 - 3) led mode (0 - 15)",
925 .max = 15,
926 .set = rtl8366s_sw_set_port_led,
927 .get = rtl8366s_sw_get_port_led,
928 },
929 };
930
931 static struct switch_attr rtl8366s_vlan[] = {
932 {
933 .type = SWITCH_TYPE_STRING,
934 .name = "info",
935 .description = "Get vlan information",
936 .max = 1,
937 .set = NULL,
938 .get = rtl8366_sw_get_vlan_info,
939 }, {
940 .type = SWITCH_TYPE_INT,
941 .name = "fid",
942 .description = "Get/Set vlan FID",
943 .max = RTL8366S_FIDMAX,
944 .set = rtl8366_sw_set_vlan_fid,
945 .get = rtl8366_sw_get_vlan_fid,
946 },
947 };
948
949 static const struct switch_dev_ops rtl8366_ops = {
950 .attr_global = {
951 .attr = rtl8366s_globals,
952 .n_attr = ARRAY_SIZE(rtl8366s_globals),
953 },
954 .attr_port = {
955 .attr = rtl8366s_port,
956 .n_attr = ARRAY_SIZE(rtl8366s_port),
957 },
958 .attr_vlan = {
959 .attr = rtl8366s_vlan,
960 .n_attr = ARRAY_SIZE(rtl8366s_vlan),
961 },
962
963 .get_vlan_ports = rtl8366_sw_get_vlan_ports,
964 .set_vlan_ports = rtl8366_sw_set_vlan_ports,
965 .get_port_pvid = rtl8366_sw_get_port_pvid,
966 .set_port_pvid = rtl8366_sw_set_port_pvid,
967 .reset_switch = rtl8366s_sw_reset_switch,
968 .get_port_link = rtl8366s_sw_get_port_link,
969 };
970
971 static int rtl8366s_switch_init(struct rtl8366_smi *smi)
972 {
973 struct switch_dev *dev = &smi->sw_dev;
974 int err;
975
976 dev->name = "RTL8366S";
977 dev->cpu_port = RTL8366S_PORT_NUM_CPU;
978 dev->ports = RTL8366S_NUM_PORTS;
979 dev->vlans = RTL8366S_NUM_VIDS;
980 dev->ops = &rtl8366_ops;
981 dev->alias = dev_name(smi->parent);
982
983 err = register_switch(dev, NULL);
984 if (err)
985 dev_err(smi->parent, "switch registration failed\n");
986
987 return err;
988 }
989
990 static void rtl8366s_switch_cleanup(struct rtl8366_smi *smi)
991 {
992 unregister_switch(&smi->sw_dev);
993 }
994
995 static int rtl8366s_mii_read(struct mii_bus *bus, int addr, int reg)
996 {
997 struct rtl8366_smi *smi = bus->priv;
998 u32 val = 0;
999 int err;
1000
1001 err = rtl8366s_read_phy_reg(smi, addr, 0, reg, &val);
1002 if (err)
1003 return 0xffff;
1004
1005 return val;
1006 }
1007
1008 static int rtl8366s_mii_write(struct mii_bus *bus, int addr, int reg, u16 val)
1009 {
1010 struct rtl8366_smi *smi = bus->priv;
1011 u32 t;
1012 int err;
1013
1014 err = rtl8366s_write_phy_reg(smi, addr, 0, reg, val);
1015 /* flush write */
1016 (void) rtl8366s_read_phy_reg(smi, addr, 0, reg, &t);
1017
1018 return err;
1019 }
1020
1021 static int rtl8366s_setup(struct rtl8366_smi *smi)
1022 {
1023 int ret;
1024
1025 ret = rtl8366s_reset_chip(smi);
1026 if (ret)
1027 return ret;
1028
1029 ret = rtl8366s_hw_init(smi);
1030 return ret;
1031 }
1032
1033 static int rtl8366s_detect(struct rtl8366_smi *smi)
1034 {
1035 u32 chip_id = 0;
1036 u32 chip_ver = 0;
1037 int ret;
1038
1039 ret = rtl8366_smi_read_reg(smi, RTL8366S_CHIP_ID_REG, &chip_id);
1040 if (ret) {
1041 dev_err(smi->parent, "unable to read chip id\n");
1042 return ret;
1043 }
1044
1045 switch (chip_id) {
1046 case RTL8366S_CHIP_ID_8366:
1047 break;
1048 default:
1049 dev_err(smi->parent, "unknown chip id (%04x)\n", chip_id);
1050 return -ENODEV;
1051 }
1052
1053 ret = rtl8366_smi_read_reg(smi, RTL8366S_CHIP_VERSION_CTRL_REG,
1054 &chip_ver);
1055 if (ret) {
1056 dev_err(smi->parent, "unable to read chip version\n");
1057 return ret;
1058 }
1059
1060 dev_info(smi->parent, "RTL%04x ver. %u chip found\n",
1061 chip_id, chip_ver & RTL8366S_CHIP_VERSION_MASK);
1062
1063 return 0;
1064 }
1065
1066 static struct rtl8366_smi_ops rtl8366s_smi_ops = {
1067 .detect = rtl8366s_detect,
1068 .setup = rtl8366s_setup,
1069
1070 .mii_read = rtl8366s_mii_read,
1071 .mii_write = rtl8366s_mii_write,
1072
1073 .get_vlan_mc = rtl8366s_get_vlan_mc,
1074 .set_vlan_mc = rtl8366s_set_vlan_mc,
1075 .get_vlan_4k = rtl8366s_get_vlan_4k,
1076 .set_vlan_4k = rtl8366s_set_vlan_4k,
1077 .get_mc_index = rtl8366s_get_mc_index,
1078 .set_mc_index = rtl8366s_set_mc_index,
1079 .get_mib_counter = rtl8366_get_mib_counter,
1080 .is_vlan_valid = rtl8366s_is_vlan_valid,
1081 .enable_vlan = rtl8366s_enable_vlan,
1082 .enable_vlan4k = rtl8366s_enable_vlan4k,
1083 .enable_port = rtl8366s_enable_port,
1084 };
1085
1086 static int __devinit rtl8366s_probe(struct platform_device *pdev)
1087 {
1088 static int rtl8366_smi_version_printed;
1089 struct rtl8366_platform_data *pdata;
1090 struct rtl8366_smi *smi;
1091 int err;
1092
1093 if (!rtl8366_smi_version_printed++)
1094 printk(KERN_NOTICE RTL8366S_DRIVER_DESC
1095 " version " RTL8366S_DRIVER_VER"\n");
1096
1097 pdata = pdev->dev.platform_data;
1098 if (!pdata) {
1099 dev_err(&pdev->dev, "no platform data specified\n");
1100 err = -EINVAL;
1101 goto err_out;
1102 }
1103
1104 smi = rtl8366_smi_alloc(&pdev->dev);
1105 if (!smi) {
1106 err = -ENOMEM;
1107 goto err_out;
1108 }
1109
1110 smi->gpio_sda = pdata->gpio_sda;
1111 smi->gpio_sck = pdata->gpio_sck;
1112 smi->clk_delay = 10;
1113 smi->cmd_read = 0xa9;
1114 smi->cmd_write = 0xa8;
1115 smi->ops = &rtl8366s_smi_ops;
1116 smi->cpu_port = RTL8366S_PORT_NUM_CPU;
1117 smi->num_ports = RTL8366S_NUM_PORTS;
1118 smi->num_vlan_mc = RTL8366S_NUM_VLANS;
1119 smi->mib_counters = rtl8366s_mib_counters;
1120 smi->num_mib_counters = ARRAY_SIZE(rtl8366s_mib_counters);
1121
1122 err = rtl8366_smi_init(smi);
1123 if (err)
1124 goto err_free_smi;
1125
1126 platform_set_drvdata(pdev, smi);
1127
1128 err = rtl8366s_switch_init(smi);
1129 if (err)
1130 goto err_clear_drvdata;
1131
1132 return 0;
1133
1134 err_clear_drvdata:
1135 platform_set_drvdata(pdev, NULL);
1136 rtl8366_smi_cleanup(smi);
1137 err_free_smi:
1138 kfree(smi);
1139 err_out:
1140 return err;
1141 }
1142
1143 static int __devexit rtl8366s_remove(struct platform_device *pdev)
1144 {
1145 struct rtl8366_smi *smi = platform_get_drvdata(pdev);
1146
1147 if (smi) {
1148 rtl8366s_switch_cleanup(smi);
1149 platform_set_drvdata(pdev, NULL);
1150 rtl8366_smi_cleanup(smi);
1151 kfree(smi);
1152 }
1153
1154 return 0;
1155 }
1156
1157 static struct platform_driver rtl8366s_driver = {
1158 .driver = {
1159 .name = RTL8366S_DRIVER_NAME,
1160 .owner = THIS_MODULE,
1161 },
1162 .probe = rtl8366s_probe,
1163 .remove = __devexit_p(rtl8366s_remove),
1164 };
1165
1166 static int __init rtl8366s_module_init(void)
1167 {
1168 return platform_driver_register(&rtl8366s_driver);
1169 }
1170 module_init(rtl8366s_module_init);
1171
1172 static void __exit rtl8366s_module_exit(void)
1173 {
1174 platform_driver_unregister(&rtl8366s_driver);
1175 }
1176 module_exit(rtl8366s_module_exit);
1177
1178 MODULE_DESCRIPTION(RTL8366S_DRIVER_DESC);
1179 MODULE_VERSION(RTL8366S_DRIVER_VER);
1180 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1181 MODULE_AUTHOR("Antti Seppälä <a.seppala@gmail.com>");
1182 MODULE_LICENSE("GPL v2");
1183 MODULE_ALIAS("platform:" RTL8366S_DRIVER_NAME);
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