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Linux 4.16.11
[linux/fpc-iii.git] / drivers / net / dsa / b53 / b53_common.c
blob63e02a54d5379202592a9dcdbbb3e0e095996173
1 /*
2 * B53 switch driver main logic
3 *
4 * Copyright (C) 2011-2013 Jonas Gorski <jogo@openwrt.org>
5 * Copyright (C) 2016 Florian Fainelli <f.fainelli@gmail.com>
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21
22 #include <linux/delay.h>
23 #include <linux/export.h>
24 #include <linux/gpio.h>
25 #include <linux/kernel.h>
26 #include <linux/module.h>
27 #include <linux/platform_data/b53.h>
28 #include <linux/phy.h>
29 #include <linux/etherdevice.h>
30 #include <linux/if_bridge.h>
31 #include <net/dsa.h>
32
33 #include "b53_regs.h"
34 #include "b53_priv.h"
35
36 struct b53_mib_desc {
37 u8 size;
38 u8 offset;
39 const char *name;
40 };
41
42 /* BCM5365 MIB counters */
43 static const struct b53_mib_desc b53_mibs_65[] = {
44 { 8, 0x00, "TxOctets" },
45 { 4, 0x08, "TxDropPkts" },
46 { 4, 0x10, "TxBroadcastPkts" },
47 { 4, 0x14, "TxMulticastPkts" },
48 { 4, 0x18, "TxUnicastPkts" },
49 { 4, 0x1c, "TxCollisions" },
50 { 4, 0x20, "TxSingleCollision" },
51 { 4, 0x24, "TxMultipleCollision" },
52 { 4, 0x28, "TxDeferredTransmit" },
53 { 4, 0x2c, "TxLateCollision" },
54 { 4, 0x30, "TxExcessiveCollision" },
55 { 4, 0x38, "TxPausePkts" },
56 { 8, 0x44, "RxOctets" },
57 { 4, 0x4c, "RxUndersizePkts" },
58 { 4, 0x50, "RxPausePkts" },
59 { 4, 0x54, "Pkts64Octets" },
60 { 4, 0x58, "Pkts65to127Octets" },
61 { 4, 0x5c, "Pkts128to255Octets" },
62 { 4, 0x60, "Pkts256to511Octets" },
63 { 4, 0x64, "Pkts512to1023Octets" },
64 { 4, 0x68, "Pkts1024to1522Octets" },
65 { 4, 0x6c, "RxOversizePkts" },
66 { 4, 0x70, "RxJabbers" },
67 { 4, 0x74, "RxAlignmentErrors" },
68 { 4, 0x78, "RxFCSErrors" },
69 { 8, 0x7c, "RxGoodOctets" },
70 { 4, 0x84, "RxDropPkts" },
71 { 4, 0x88, "RxUnicastPkts" },
72 { 4, 0x8c, "RxMulticastPkts" },
73 { 4, 0x90, "RxBroadcastPkts" },
74 { 4, 0x94, "RxSAChanges" },
75 { 4, 0x98, "RxFragments" },
76 };
77
78 #define B53_MIBS_65_SIZE ARRAY_SIZE(b53_mibs_65)
79
80 /* BCM63xx MIB counters */
81 static const struct b53_mib_desc b53_mibs_63xx[] = {
82 { 8, 0x00, "TxOctets" },
83 { 4, 0x08, "TxDropPkts" },
84 { 4, 0x0c, "TxQoSPkts" },
85 { 4, 0x10, "TxBroadcastPkts" },
86 { 4, 0x14, "TxMulticastPkts" },
87 { 4, 0x18, "TxUnicastPkts" },
88 { 4, 0x1c, "TxCollisions" },
89 { 4, 0x20, "TxSingleCollision" },
90 { 4, 0x24, "TxMultipleCollision" },
91 { 4, 0x28, "TxDeferredTransmit" },
92 { 4, 0x2c, "TxLateCollision" },
93 { 4, 0x30, "TxExcessiveCollision" },
94 { 4, 0x38, "TxPausePkts" },
95 { 8, 0x3c, "TxQoSOctets" },
96 { 8, 0x44, "RxOctets" },
97 { 4, 0x4c, "RxUndersizePkts" },
98 { 4, 0x50, "RxPausePkts" },
99 { 4, 0x54, "Pkts64Octets" },
100 { 4, 0x58, "Pkts65to127Octets" },
101 { 4, 0x5c, "Pkts128to255Octets" },
102 { 4, 0x60, "Pkts256to511Octets" },
103 { 4, 0x64, "Pkts512to1023Octets" },
104 { 4, 0x68, "Pkts1024to1522Octets" },
105 { 4, 0x6c, "RxOversizePkts" },
106 { 4, 0x70, "RxJabbers" },
107 { 4, 0x74, "RxAlignmentErrors" },
108 { 4, 0x78, "RxFCSErrors" },
109 { 8, 0x7c, "RxGoodOctets" },
110 { 4, 0x84, "RxDropPkts" },
111 { 4, 0x88, "RxUnicastPkts" },
112 { 4, 0x8c, "RxMulticastPkts" },
113 { 4, 0x90, "RxBroadcastPkts" },
114 { 4, 0x94, "RxSAChanges" },
115 { 4, 0x98, "RxFragments" },
116 { 4, 0xa0, "RxSymbolErrors" },
117 { 4, 0xa4, "RxQoSPkts" },
118 { 8, 0xa8, "RxQoSOctets" },
119 { 4, 0xb0, "Pkts1523to2047Octets" },
120 { 4, 0xb4, "Pkts2048to4095Octets" },
121 { 4, 0xb8, "Pkts4096to8191Octets" },
122 { 4, 0xbc, "Pkts8192to9728Octets" },
123 { 4, 0xc0, "RxDiscarded" },
124 };
125
126 #define B53_MIBS_63XX_SIZE ARRAY_SIZE(b53_mibs_63xx)
127
128 /* MIB counters */
129 static const struct b53_mib_desc b53_mibs[] = {
130 { 8, 0x00, "TxOctets" },
131 { 4, 0x08, "TxDropPkts" },
132 { 4, 0x10, "TxBroadcastPkts" },
133 { 4, 0x14, "TxMulticastPkts" },
134 { 4, 0x18, "TxUnicastPkts" },
135 { 4, 0x1c, "TxCollisions" },
136 { 4, 0x20, "TxSingleCollision" },
137 { 4, 0x24, "TxMultipleCollision" },
138 { 4, 0x28, "TxDeferredTransmit" },
139 { 4, 0x2c, "TxLateCollision" },
140 { 4, 0x30, "TxExcessiveCollision" },
141 { 4, 0x38, "TxPausePkts" },
142 { 8, 0x50, "RxOctets" },
143 { 4, 0x58, "RxUndersizePkts" },
144 { 4, 0x5c, "RxPausePkts" },
145 { 4, 0x60, "Pkts64Octets" },
146 { 4, 0x64, "Pkts65to127Octets" },
147 { 4, 0x68, "Pkts128to255Octets" },
148 { 4, 0x6c, "Pkts256to511Octets" },
149 { 4, 0x70, "Pkts512to1023Octets" },
150 { 4, 0x74, "Pkts1024to1522Octets" },
151 { 4, 0x78, "RxOversizePkts" },
152 { 4, 0x7c, "RxJabbers" },
153 { 4, 0x80, "RxAlignmentErrors" },
154 { 4, 0x84, "RxFCSErrors" },
155 { 8, 0x88, "RxGoodOctets" },
156 { 4, 0x90, "RxDropPkts" },
157 { 4, 0x94, "RxUnicastPkts" },
158 { 4, 0x98, "RxMulticastPkts" },
159 { 4, 0x9c, "RxBroadcastPkts" },
160 { 4, 0xa0, "RxSAChanges" },
161 { 4, 0xa4, "RxFragments" },
162 { 4, 0xa8, "RxJumboPkts" },
163 { 4, 0xac, "RxSymbolErrors" },
164 { 4, 0xc0, "RxDiscarded" },
165 };
166
167 #define B53_MIBS_SIZE ARRAY_SIZE(b53_mibs)
168
169 static const struct b53_mib_desc b53_mibs_58xx[] = {
170 { 8, 0x00, "TxOctets" },
171 { 4, 0x08, "TxDropPkts" },
172 { 4, 0x0c, "TxQPKTQ0" },
173 { 4, 0x10, "TxBroadcastPkts" },
174 { 4, 0x14, "TxMulticastPkts" },
175 { 4, 0x18, "TxUnicastPKts" },
176 { 4, 0x1c, "TxCollisions" },
177 { 4, 0x20, "TxSingleCollision" },
178 { 4, 0x24, "TxMultipleCollision" },
179 { 4, 0x28, "TxDeferredCollision" },
180 { 4, 0x2c, "TxLateCollision" },
181 { 4, 0x30, "TxExcessiveCollision" },
182 { 4, 0x34, "TxFrameInDisc" },
183 { 4, 0x38, "TxPausePkts" },
184 { 4, 0x3c, "TxQPKTQ1" },
185 { 4, 0x40, "TxQPKTQ2" },
186 { 4, 0x44, "TxQPKTQ3" },
187 { 4, 0x48, "TxQPKTQ4" },
188 { 4, 0x4c, "TxQPKTQ5" },
189 { 8, 0x50, "RxOctets" },
190 { 4, 0x58, "RxUndersizePkts" },
191 { 4, 0x5c, "RxPausePkts" },
192 { 4, 0x60, "RxPkts64Octets" },
193 { 4, 0x64, "RxPkts65to127Octets" },
194 { 4, 0x68, "RxPkts128to255Octets" },
195 { 4, 0x6c, "RxPkts256to511Octets" },
196 { 4, 0x70, "RxPkts512to1023Octets" },
197 { 4, 0x74, "RxPkts1024toMaxPktsOctets" },
198 { 4, 0x78, "RxOversizePkts" },
199 { 4, 0x7c, "RxJabbers" },
200 { 4, 0x80, "RxAlignmentErrors" },
201 { 4, 0x84, "RxFCSErrors" },
202 { 8, 0x88, "RxGoodOctets" },
203 { 4, 0x90, "RxDropPkts" },
204 { 4, 0x94, "RxUnicastPkts" },
205 { 4, 0x98, "RxMulticastPkts" },
206 { 4, 0x9c, "RxBroadcastPkts" },
207 { 4, 0xa0, "RxSAChanges" },
208 { 4, 0xa4, "RxFragments" },
209 { 4, 0xa8, "RxJumboPkt" },
210 { 4, 0xac, "RxSymblErr" },
211 { 4, 0xb0, "InRangeErrCount" },
212 { 4, 0xb4, "OutRangeErrCount" },
213 { 4, 0xb8, "EEELpiEvent" },
214 { 4, 0xbc, "EEELpiDuration" },
215 { 4, 0xc0, "RxDiscard" },
216 { 4, 0xc8, "TxQPKTQ6" },
217 { 4, 0xcc, "TxQPKTQ7" },
218 { 4, 0xd0, "TxPkts64Octets" },
219 { 4, 0xd4, "TxPkts65to127Octets" },
220 { 4, 0xd8, "TxPkts128to255Octets" },
221 { 4, 0xdc, "TxPkts256to511Ocets" },
222 { 4, 0xe0, "TxPkts512to1023Ocets" },
223 { 4, 0xe4, "TxPkts1024toMaxPktOcets" },
224 };
225
226 #define B53_MIBS_58XX_SIZE ARRAY_SIZE(b53_mibs_58xx)
227
228 static int b53_do_vlan_op(struct b53_device *dev, u8 op)
229 {
230 unsigned int i;
231
232 b53_write8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], VTA_START_CMD | op);
233
234 for (i = 0; i < 10; i++) {
235 u8 vta;
236
237 b53_read8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], &vta);
238 if (!(vta & VTA_START_CMD))
239 return 0;
240
241 usleep_range(100, 200);
242 }
243
244 return -EIO;
245 }
246
247 static void b53_set_vlan_entry(struct b53_device *dev, u16 vid,
248 struct b53_vlan *vlan)
249 {
250 if (is5325(dev)) {
251 u32 entry = 0;
252
253 if (vlan->members) {
254 entry = ((vlan->untag & VA_UNTAG_MASK_25) <<
255 VA_UNTAG_S_25) | vlan->members;
256 if (dev->core_rev >= 3)
257 entry |= VA_VALID_25_R4 | vid << VA_VID_HIGH_S;
258 else
259 entry |= VA_VALID_25;
260 }
261
262 b53_write32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, entry);
263 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
264 VTA_RW_STATE_WR | VTA_RW_OP_EN);
265 } else if (is5365(dev)) {
266 u16 entry = 0;
267
268 if (vlan->members)
269 entry = ((vlan->untag & VA_UNTAG_MASK_65) <<
270 VA_UNTAG_S_65) | vlan->members | VA_VALID_65;
271
272 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, entry);
273 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
274 VTA_RW_STATE_WR | VTA_RW_OP_EN);
275 } else {
276 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
277 b53_write32(dev, B53_ARLIO_PAGE, dev->vta_regs[2],
278 (vlan->untag << VTE_UNTAG_S) | vlan->members);
279
280 b53_do_vlan_op(dev, VTA_CMD_WRITE);
281 }
282
283 dev_dbg(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n",
284 vid, vlan->members, vlan->untag);
285 }
286
287 static void b53_get_vlan_entry(struct b53_device *dev, u16 vid,
288 struct b53_vlan *vlan)
289 {
290 if (is5325(dev)) {
291 u32 entry = 0;
292
293 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
294 VTA_RW_STATE_RD | VTA_RW_OP_EN);
295 b53_read32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, &entry);
296
297 if (dev->core_rev >= 3)
298 vlan->valid = !!(entry & VA_VALID_25_R4);
299 else
300 vlan->valid = !!(entry & VA_VALID_25);
301 vlan->members = entry & VA_MEMBER_MASK;
302 vlan->untag = (entry >> VA_UNTAG_S_25) & VA_UNTAG_MASK_25;
303
304 } else if (is5365(dev)) {
305 u16 entry = 0;
306
307 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
308 VTA_RW_STATE_WR | VTA_RW_OP_EN);
309 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, &entry);
310
311 vlan->valid = !!(entry & VA_VALID_65);
312 vlan->members = entry & VA_MEMBER_MASK;
313 vlan->untag = (entry >> VA_UNTAG_S_65) & VA_UNTAG_MASK_65;
314 } else {
315 u32 entry = 0;
316
317 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
318 b53_do_vlan_op(dev, VTA_CMD_READ);
319 b53_read32(dev, B53_ARLIO_PAGE, dev->vta_regs[2], &entry);
320 vlan->members = entry & VTE_MEMBERS;
321 vlan->untag = (entry >> VTE_UNTAG_S) & VTE_MEMBERS;
322 vlan->valid = true;
323 }
324 }
325
326 static void b53_set_forwarding(struct b53_device *dev, int enable)
327 {
328 u8 mgmt;
329
330 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
331
332 if (enable)
333 mgmt |= SM_SW_FWD_EN;
334 else
335 mgmt &= ~SM_SW_FWD_EN;
336
337 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
338
339 /* Include IMP port in dumb forwarding mode
340 */
341 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
342 mgmt |= B53_MII_DUMB_FWDG_EN;
343 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
344 }
345
346 static void b53_enable_vlan(struct b53_device *dev, bool enable)
347 {
348 u8 mgmt, vc0, vc1, vc4 = 0, vc5;
349
350 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
351 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, &vc0);
352 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, &vc1);
353
354 if (is5325(dev) || is5365(dev)) {
355 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
356 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, &vc5);
357 } else if (is63xx(dev)) {
358 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, &vc4);
359 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, &vc5);
360 } else {
361 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, &vc4);
362 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
363 }
364
365 mgmt &= ~SM_SW_FWD_MODE;
366
367 if (enable) {
368 vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
369 vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
370 vc4 &= ~VC4_ING_VID_CHECK_MASK;
371 vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
372 vc5 |= VC5_DROP_VTABLE_MISS;
373
374 if (is5325(dev))
375 vc0 &= ~VC0_RESERVED_1;
376
377 if (is5325(dev) || is5365(dev))
378 vc1 |= VC1_RX_MCST_TAG_EN;
379
380 } else {
381 vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);
382 vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN);
383 vc4 &= ~VC4_ING_VID_CHECK_MASK;
384 vc5 &= ~VC5_DROP_VTABLE_MISS;
385
386 if (is5325(dev) || is5365(dev))
387 vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
388 else
389 vc4 |= VC4_ING_VID_VIO_TO_IMP << VC4_ING_VID_CHECK_S;
390
391 if (is5325(dev) || is5365(dev))
392 vc1 &= ~VC1_RX_MCST_TAG_EN;
393 }
394
395 if (!is5325(dev) && !is5365(dev))
396 vc5 &= ~VC5_VID_FFF_EN;
397
398 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, vc0);
399 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, vc1);
400
401 if (is5325(dev) || is5365(dev)) {
402 /* enable the high 8 bit vid check on 5325 */
403 if (is5325(dev) && enable)
404 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3,
405 VC3_HIGH_8BIT_EN);
406 else
407 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
408
409 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, vc4);
410 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, vc5);
411 } else if (is63xx(dev)) {
412 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3_63XX, 0);
413 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, vc4);
414 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, vc5);
415 } else {
416 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
417 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, vc4);
418 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, vc5);
419 }
420
421 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
422 }
423
424 static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
425 {
426 u32 port_mask = 0;
427 u16 max_size = JMS_MIN_SIZE;
428
429 if (is5325(dev) || is5365(dev))
430 return -EINVAL;
431
432 if (enable) {
433 port_mask = dev->enabled_ports;
434 max_size = JMS_MAX_SIZE;
435 if (allow_10_100)
436 port_mask |= JPM_10_100_JUMBO_EN;
437 }
438
439 b53_write32(dev, B53_JUMBO_PAGE, dev->jumbo_pm_reg, port_mask);
440 return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size);
441 }
442
443 static int b53_flush_arl(struct b53_device *dev, u8 mask)
444 {
445 unsigned int i;
446
447 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
448 FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
449
450 for (i = 0; i < 10; i++) {
451 u8 fast_age_ctrl;
452
453 b53_read8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
454 &fast_age_ctrl);
455
456 if (!(fast_age_ctrl & FAST_AGE_DONE))
457 goto out;
458
459 msleep(1);
460 }
461
462 return -ETIMEDOUT;
463 out:
464 /* Only age dynamic entries (default behavior) */
465 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, FAST_AGE_DYNAMIC);
466 return 0;
467 }
468
469 static int b53_fast_age_port(struct b53_device *dev, int port)
470 {
471 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port);
472
473 return b53_flush_arl(dev, FAST_AGE_PORT);
474 }
475
476 static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
477 {
478 b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid);
479
480 return b53_flush_arl(dev, FAST_AGE_VLAN);
481 }
482
483 void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
484 {
485 struct b53_device *dev = ds->priv;
486 unsigned int i;
487 u16 pvlan;
488
489 /* Enable the IMP port to be in the same VLAN as the other ports
490 * on a per-port basis such that we only have Port i and IMP in
491 * the same VLAN.
492 */
493 b53_for_each_port(dev, i) {
494 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &pvlan);
495 pvlan |= BIT(cpu_port);
496 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), pvlan);
497 }
498 }
499 EXPORT_SYMBOL(b53_imp_vlan_setup);
500
501 int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
502 {
503 struct b53_device *dev = ds->priv;
504 unsigned int cpu_port = ds->ports[port].cpu_dp->index;
505 u16 pvlan;
506
507 /* Clear the Rx and Tx disable bits and set to no spanning tree */
508 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0);
509
510 /* Set this port, and only this one to be in the default VLAN,
511 * if member of a bridge, restore its membership prior to
512 * bringing down this port.
513 */
514 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
515 pvlan &= ~0x1ff;
516 pvlan |= BIT(port);
517 pvlan |= dev->ports[port].vlan_ctl_mask;
518 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
519
520 b53_imp_vlan_setup(ds, cpu_port);
521
522 /* If EEE was enabled, restore it */
523 if (dev->ports[port].eee.eee_enabled)
524 b53_eee_enable_set(ds, port, true);
525
526 return 0;
527 }
528 EXPORT_SYMBOL(b53_enable_port);
529
530 void b53_disable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
531 {
532 struct b53_device *dev = ds->priv;
533 u8 reg;
534
535 /* Disable Tx/Rx for the port */
536 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
537 reg |= PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE;
538 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
539 }
540 EXPORT_SYMBOL(b53_disable_port);
541
542 void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)
543 {
544 bool tag_en = !(ds->ops->get_tag_protocol(ds, port) ==
545 DSA_TAG_PROTO_NONE);
546 struct b53_device *dev = ds->priv;
547 u8 hdr_ctl, val;
548 u16 reg;
549
550 /* Resolve which bit controls the Broadcom tag */
551 switch (port) {
552 case 8:
553 val = BRCM_HDR_P8_EN;
554 break;
555 case 7:
556 val = BRCM_HDR_P7_EN;
557 break;
558 case 5:
559 val = BRCM_HDR_P5_EN;
560 break;
561 default:
562 val = 0;
563 break;
564 }
565
566 /* Enable Broadcom tags for IMP port */
567 b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl);
568 if (tag_en)
569 hdr_ctl |= val;
570 else
571 hdr_ctl &= ~val;
572 b53_write8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, hdr_ctl);
573
574 /* Registers below are only accessible on newer devices */
575 if (!is58xx(dev))
576 return;
577
578 /* Enable reception Broadcom tag for CPU TX (switch RX) to
579 * allow us to tag outgoing frames
580 */
581 b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, &reg);
582 if (tag_en)
583 reg &= ~BIT(port);
584 else
585 reg |= BIT(port);
586 b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, reg);
587
588 /* Enable transmission of Broadcom tags from the switch (CPU RX) to
589 * allow delivering frames to the per-port net_devices
590 */
591 b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, &reg);
592 if (tag_en)
593 reg &= ~BIT(port);
594 else
595 reg |= BIT(port);
596 b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, reg);
597 }
598 EXPORT_SYMBOL(b53_brcm_hdr_setup);
599
600 static void b53_enable_cpu_port(struct b53_device *dev, int port)
601 {
602 u8 port_ctrl;
603
604 /* BCM5325 CPU port is at 8 */
605 if ((is5325(dev) || is5365(dev)) && port == B53_CPU_PORT_25)
606 port = B53_CPU_PORT;
607
608 port_ctrl = PORT_CTRL_RX_BCST_EN |
609 PORT_CTRL_RX_MCST_EN |
610 PORT_CTRL_RX_UCST_EN;
611 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), port_ctrl);
612
613 b53_brcm_hdr_setup(dev->ds, port);
614 }
615
616 static void b53_enable_mib(struct b53_device *dev)
617 {
618 u8 gc;
619
620 b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
621 gc &= ~(GC_RESET_MIB | GC_MIB_AC_EN);
622 b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
623 }
624
625 int b53_configure_vlan(struct dsa_switch *ds)
626 {
627 struct b53_device *dev = ds->priv;
628 struct b53_vlan vl = { 0 };
629 int i;
630
631 /* clear all vlan entries */
632 if (is5325(dev) || is5365(dev)) {
633 for (i = 1; i < dev->num_vlans; i++)
634 b53_set_vlan_entry(dev, i, &vl);
635 } else {
636 b53_do_vlan_op(dev, VTA_CMD_CLEAR);
637 }
638
639 b53_enable_vlan(dev, false);
640
641 b53_for_each_port(dev, i)
642 b53_write16(dev, B53_VLAN_PAGE,
643 B53_VLAN_PORT_DEF_TAG(i), 1);
644
645 if (!is5325(dev) && !is5365(dev))
646 b53_set_jumbo(dev, dev->enable_jumbo, false);
647
648 return 0;
649 }
650 EXPORT_SYMBOL(b53_configure_vlan);
651
652 static void b53_switch_reset_gpio(struct b53_device *dev)
653 {
654 int gpio = dev->reset_gpio;
655
656 if (gpio < 0)
657 return;
658
659 /* Reset sequence: RESET low(50ms)->high(20ms)
660 */
661 gpio_set_value(gpio, 0);
662 mdelay(50);
663
664 gpio_set_value(gpio, 1);
665 mdelay(20);
666
667 dev->current_page = 0xff;
668 }
669
670 static int b53_switch_reset(struct b53_device *dev)
671 {
672 unsigned int timeout = 1000;
673 u8 mgmt, reg;
674
675 b53_switch_reset_gpio(dev);
676
677 if (is539x(dev)) {
678 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x83);
679 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00);
680 }
681
682 /* This is specific to 58xx devices here, do not use is58xx() which
683 * covers the larger Starfigther 2 family, including 7445/7278 which
684 * still use this driver as a library and need to perform the reset
685 * earlier.
686 */
687 if (dev->chip_id == BCM58XX_DEVICE_ID) {
688 b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
689 reg |= SW_RST | EN_SW_RST | EN_CH_RST;
690 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, reg);
691
692 do {
693 b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
694 if (!(reg & SW_RST))
695 break;
696
697 usleep_range(1000, 2000);
698 } while (timeout-- > 0);
699
700 if (timeout == 0)
701 return -ETIMEDOUT;
702 }
703
704 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
705
706 if (!(mgmt & SM_SW_FWD_EN)) {
707 mgmt &= ~SM_SW_FWD_MODE;
708 mgmt |= SM_SW_FWD_EN;
709
710 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
711 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
712
713 if (!(mgmt & SM_SW_FWD_EN)) {
714 dev_err(dev->dev, "Failed to enable switch!\n");
715 return -EINVAL;
716 }
717 }
718
719 b53_enable_mib(dev);
720
721 return b53_flush_arl(dev, FAST_AGE_STATIC);
722 }
723
724 static int b53_phy_read16(struct dsa_switch *ds, int addr, int reg)
725 {
726 struct b53_device *priv = ds->priv;
727 u16 value = 0;
728 int ret;
729
730 if (priv->ops->phy_read16)
731 ret = priv->ops->phy_read16(priv, addr, reg, &value);
732 else
733 ret = b53_read16(priv, B53_PORT_MII_PAGE(addr),
734 reg * 2, &value);
735
736 return ret ? ret : value;
737 }
738
739 static int b53_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val)
740 {
741 struct b53_device *priv = ds->priv;
742
743 if (priv->ops->phy_write16)
744 return priv->ops->phy_write16(priv, addr, reg, val);
745
746 return b53_write16(priv, B53_PORT_MII_PAGE(addr), reg * 2, val);
747 }
748
749 static int b53_reset_switch(struct b53_device *priv)
750 {
751 /* reset vlans */
752 priv->enable_jumbo = false;
753
754 memset(priv->vlans, 0, sizeof(*priv->vlans) * priv->num_vlans);
755 memset(priv->ports, 0, sizeof(*priv->ports) * priv->num_ports);
756
757 return b53_switch_reset(priv);
758 }
759
760 static int b53_apply_config(struct b53_device *priv)
761 {
762 /* disable switching */
763 b53_set_forwarding(priv, 0);
764
765 b53_configure_vlan(priv->ds);
766
767 /* enable switching */
768 b53_set_forwarding(priv, 1);
769
770 return 0;
771 }
772
773 static void b53_reset_mib(struct b53_device *priv)
774 {
775 u8 gc;
776
777 b53_read8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
778
779 b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc | GC_RESET_MIB);
780 msleep(1);
781 b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc & ~GC_RESET_MIB);
782 msleep(1);
783 }
784
785 static const struct b53_mib_desc *b53_get_mib(struct b53_device *dev)
786 {
787 if (is5365(dev))
788 return b53_mibs_65;
789 else if (is63xx(dev))
790 return b53_mibs_63xx;
791 else if (is58xx(dev))
792 return b53_mibs_58xx;
793 else
794 return b53_mibs;
795 }
796
797 static unsigned int b53_get_mib_size(struct b53_device *dev)
798 {
799 if (is5365(dev))
800 return B53_MIBS_65_SIZE;
801 else if (is63xx(dev))
802 return B53_MIBS_63XX_SIZE;
803 else if (is58xx(dev))
804 return B53_MIBS_58XX_SIZE;
805 else
806 return B53_MIBS_SIZE;
807 }
808
809 void b53_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
810 {
811 struct b53_device *dev = ds->priv;
812 const struct b53_mib_desc *mibs = b53_get_mib(dev);
813 unsigned int mib_size = b53_get_mib_size(dev);
814 unsigned int i;
815
816 for (i = 0; i < mib_size; i++)
817 strlcpy(data + i * ETH_GSTRING_LEN,
818 mibs[i].name, ETH_GSTRING_LEN);
819 }
820 EXPORT_SYMBOL(b53_get_strings);
821
822 void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data)
823 {
824 struct b53_device *dev = ds->priv;
825 const struct b53_mib_desc *mibs = b53_get_mib(dev);
826 unsigned int mib_size = b53_get_mib_size(dev);
827 const struct b53_mib_desc *s;
828 unsigned int i;
829 u64 val = 0;
830
831 if (is5365(dev) && port == 5)
832 port = 8;
833
834 mutex_lock(&dev->stats_mutex);
835
836 for (i = 0; i < mib_size; i++) {
837 s = &mibs[i];
838
839 if (s->size == 8) {
840 b53_read64(dev, B53_MIB_PAGE(port), s->offset, &val);
841 } else {
842 u32 val32;
843
844 b53_read32(dev, B53_MIB_PAGE(port), s->offset,
845 &val32);
846 val = val32;
847 }
848 data[i] = (u64)val;
849 }
850
851 mutex_unlock(&dev->stats_mutex);
852 }
853 EXPORT_SYMBOL(b53_get_ethtool_stats);
854
855 int b53_get_sset_count(struct dsa_switch *ds)
856 {
857 struct b53_device *dev = ds->priv;
858
859 return b53_get_mib_size(dev);
860 }
861 EXPORT_SYMBOL(b53_get_sset_count);
862
863 static int b53_setup(struct dsa_switch *ds)
864 {
865 struct b53_device *dev = ds->priv;
866 unsigned int port;
867 int ret;
868
869 ret = b53_reset_switch(dev);
870 if (ret) {
871 dev_err(ds->dev, "failed to reset switch\n");
872 return ret;
873 }
874
875 b53_reset_mib(dev);
876
877 ret = b53_apply_config(dev);
878 if (ret)
879 dev_err(ds->dev, "failed to apply configuration\n");
880
881 /* Configure IMP/CPU port, disable unused ports. Enabled
882 * ports will be configured with .port_enable
883 */
884 for (port = 0; port < dev->num_ports; port++) {
885 if (dsa_is_cpu_port(ds, port))
886 b53_enable_cpu_port(dev, port);
887 else if (dsa_is_unused_port(ds, port))
888 b53_disable_port(ds, port, NULL);
889 }
890
891 return ret;
892 }
893
894 static void b53_adjust_link(struct dsa_switch *ds, int port,
895 struct phy_device *phydev)
896 {
897 struct b53_device *dev = ds->priv;
898 struct ethtool_eee *p = &dev->ports[port].eee;
899 u8 rgmii_ctrl = 0, reg = 0, off;
900
901 if (!phy_is_pseudo_fixed_link(phydev))
902 return;
903
904 /* Override the port settings */
905 if (port == dev->cpu_port) {
906 off = B53_PORT_OVERRIDE_CTRL;
907 reg = PORT_OVERRIDE_EN;
908 } else {
909 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
910 reg = GMII_PO_EN;
911 }
912
913 /* Set the link UP */
914 if (phydev->link)
915 reg |= PORT_OVERRIDE_LINK;
916
917 if (phydev->duplex == DUPLEX_FULL)
918 reg |= PORT_OVERRIDE_FULL_DUPLEX;
919
920 switch (phydev->speed) {
921 case 2000:
922 reg |= PORT_OVERRIDE_SPEED_2000M;
923 /* fallthrough */
924 case SPEED_1000:
925 reg |= PORT_OVERRIDE_SPEED_1000M;
926 break;
927 case SPEED_100:
928 reg |= PORT_OVERRIDE_SPEED_100M;
929 break;
930 case SPEED_10:
931 reg |= PORT_OVERRIDE_SPEED_10M;
932 break;
933 default:
934 dev_err(ds->dev, "unknown speed: %d\n", phydev->speed);
935 return;
936 }
937
938 /* Enable flow control on BCM5301x's CPU port */
939 if (is5301x(dev) && port == dev->cpu_port)
940 reg |= PORT_OVERRIDE_RX_FLOW | PORT_OVERRIDE_TX_FLOW;
941
942 if (phydev->pause) {
943 if (phydev->asym_pause)
944 reg |= PORT_OVERRIDE_TX_FLOW;
945 reg |= PORT_OVERRIDE_RX_FLOW;
946 }
947
948 b53_write8(dev, B53_CTRL_PAGE, off, reg);
949
950 if (is531x5(dev) && phy_interface_is_rgmii(phydev)) {
951 if (port == 8)
952 off = B53_RGMII_CTRL_IMP;
953 else
954 off = B53_RGMII_CTRL_P(port);
955
956 /* Configure the port RGMII clock delay by DLL disabled and
957 * tx_clk aligned timing (restoring to reset defaults)
958 */
959 b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl);
960 rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC |
961 RGMII_CTRL_TIMING_SEL);
962
963 /* PHY_INTERFACE_MODE_RGMII_TXID means TX internal delay, make
964 * sure that we enable the port TX clock internal delay to
965 * account for this internal delay that is inserted, otherwise
966 * the switch won't be able to receive correctly.
967 *
968 * PHY_INTERFACE_MODE_RGMII means that we are not introducing
969 * any delay neither on transmission nor reception, so the
970 * BCM53125 must also be configured accordingly to account for
971 * the lack of delay and introduce
972 *
973 * The BCM53125 switch has its RX clock and TX clock control
974 * swapped, hence the reason why we modify the TX clock path in
975 * the "RGMII" case
976 */
977 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
978 rgmii_ctrl |= RGMII_CTRL_DLL_TXC;
979 if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
980 rgmii_ctrl |= RGMII_CTRL_DLL_TXC | RGMII_CTRL_DLL_RXC;
981 rgmii_ctrl |= RGMII_CTRL_TIMING_SEL;
982 b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
983
984 dev_info(ds->dev, "Configured port %d for %s\n", port,
985 phy_modes(phydev->interface));
986 }
987
988 /* configure MII port if necessary */
989 if (is5325(dev)) {
990 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
991 &reg);
992
993 /* reverse mii needs to be enabled */
994 if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
995 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
996 reg | PORT_OVERRIDE_RV_MII_25);
997 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
998 &reg);
999
1000 if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1001 dev_err(ds->dev,
1002 "Failed to enable reverse MII mode\n");
1003 return;
1004 }
1005 }
1006 } else if (is5301x(dev)) {
1007 if (port != dev->cpu_port) {
1008 u8 po_reg = B53_GMII_PORT_OVERRIDE_CTRL(dev->cpu_port);
1009 u8 gmii_po;
1010
1011 b53_read8(dev, B53_CTRL_PAGE, po_reg, &gmii_po);
1012 gmii_po |= GMII_PO_LINK |
1013 GMII_PO_RX_FLOW |
1014 GMII_PO_TX_FLOW |
1015 GMII_PO_EN |
1016 GMII_PO_SPEED_2000M;
1017 b53_write8(dev, B53_CTRL_PAGE, po_reg, gmii_po);
1018 }
1019 }
1020
1021 /* Re-negotiate EEE if it was enabled already */
1022 p->eee_enabled = b53_eee_init(ds, port, phydev);
1023 }
1024
1025 int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering)
1026 {
1027 return 0;
1028 }
1029 EXPORT_SYMBOL(b53_vlan_filtering);
1030
1031 int b53_vlan_prepare(struct dsa_switch *ds, int port,
1032 const struct switchdev_obj_port_vlan *vlan)
1033 {
1034 struct b53_device *dev = ds->priv;
1035
1036 if ((is5325(dev) || is5365(dev)) && vlan->vid_begin == 0)
1037 return -EOPNOTSUPP;
1038
1039 if (vlan->vid_end > dev->num_vlans)
1040 return -ERANGE;
1041
1042 b53_enable_vlan(dev, true);
1043
1044 return 0;
1045 }
1046 EXPORT_SYMBOL(b53_vlan_prepare);
1047
1048 void b53_vlan_add(struct dsa_switch *ds, int port,
1049 const struct switchdev_obj_port_vlan *vlan)
1050 {
1051 struct b53_device *dev = ds->priv;
1052 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1053 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1054 struct b53_vlan *vl;
1055 u16 vid;
1056
1057 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
1058 vl = &dev->vlans[vid];
1059
1060 b53_get_vlan_entry(dev, vid, vl);
1061
1062 vl->members |= BIT(port);
1063 if (untagged)
1064 vl->untag |= BIT(port);
1065 else
1066 vl->untag &= ~BIT(port);
1067
1068 b53_set_vlan_entry(dev, vid, vl);
1069 b53_fast_age_vlan(dev, vid);
1070 }
1071
1072 if (pvid) {
1073 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
1074 vlan->vid_end);
1075 b53_fast_age_vlan(dev, vid);
1076 }
1077 }
1078 EXPORT_SYMBOL(b53_vlan_add);
1079
1080 int b53_vlan_del(struct dsa_switch *ds, int port,
1081 const struct switchdev_obj_port_vlan *vlan)
1082 {
1083 struct b53_device *dev = ds->priv;
1084 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1085 struct b53_vlan *vl;
1086 u16 vid;
1087 u16 pvid;
1088
1089 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
1090
1091 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
1092 vl = &dev->vlans[vid];
1093
1094 b53_get_vlan_entry(dev, vid, vl);
1095
1096 vl->members &= ~BIT(port);
1097
1098 if (pvid == vid) {
1099 if (is5325(dev) || is5365(dev))
1100 pvid = 1;
1101 else
1102 pvid = 0;
1103 }
1104
1105 if (untagged)
1106 vl->untag &= ~(BIT(port));
1107
1108 b53_set_vlan_entry(dev, vid, vl);
1109 b53_fast_age_vlan(dev, vid);
1110 }
1111
1112 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), pvid);
1113 b53_fast_age_vlan(dev, pvid);
1114
1115 return 0;
1116 }
1117 EXPORT_SYMBOL(b53_vlan_del);
1118
1119 /* Address Resolution Logic routines */
1120 static int b53_arl_op_wait(struct b53_device *dev)
1121 {
1122 unsigned int timeout = 10;
1123 u8 reg;
1124
1125 do {
1126 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
1127 if (!(reg & ARLTBL_START_DONE))
1128 return 0;
1129
1130 usleep_range(1000, 2000);
1131 } while (timeout--);
1132
1133 dev_warn(dev->dev, "timeout waiting for ARL to finish: 0x%02x\n", reg);
1134
1135 return -ETIMEDOUT;
1136 }
1137
1138 static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
1139 {
1140 u8 reg;
1141
1142 if (op > ARLTBL_RW)
1143 return -EINVAL;
1144
1145 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, &reg);
1146 reg |= ARLTBL_START_DONE;
1147 if (op)
1148 reg |= ARLTBL_RW;
1149 else
1150 reg &= ~ARLTBL_RW;
1151 b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, reg);
1152
1153 return b53_arl_op_wait(dev);
1154 }
1155
1156 static int b53_arl_read(struct b53_device *dev, u64 mac,
1157 u16 vid, struct b53_arl_entry *ent, u8 *idx,
1158 bool is_valid)
1159 {
1160 unsigned int i;
1161 int ret;
1162
1163 ret = b53_arl_op_wait(dev);
1164 if (ret)
1165 return ret;
1166
1167 /* Read the bins */
1168 for (i = 0; i < dev->num_arl_entries; i++) {
1169 u64 mac_vid;
1170 u32 fwd_entry;
1171
1172 b53_read64(dev, B53_ARLIO_PAGE,
1173 B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
1174 b53_read32(dev, B53_ARLIO_PAGE,
1175 B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
1176 b53_arl_to_entry(ent, mac_vid, fwd_entry);
1177
1178 if (!(fwd_entry & ARLTBL_VALID))
1179 continue;
1180 if ((mac_vid & ARLTBL_MAC_MASK) != mac)
1181 continue;
1182 *idx = i;
1183 }
1184
1185 return -ENOENT;
1186 }
1187
1188 static int b53_arl_op(struct b53_device *dev, int op, int port,
1189 const unsigned char *addr, u16 vid, bool is_valid)
1190 {
1191 struct b53_arl_entry ent;
1192 u32 fwd_entry;
1193 u64 mac, mac_vid = 0;
1194 u8 idx = 0;
1195 int ret;
1196
1197 /* Convert the array into a 64-bit MAC */
1198 mac = ether_addr_to_u64(addr);
1199
1200 /* Perform a read for the given MAC and VID */
1201 b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
1202 b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
1203
1204 /* Issue a read operation for this MAC */
1205 ret = b53_arl_rw_op(dev, 1);
1206 if (ret)
1207 return ret;
1208
1209 ret = b53_arl_read(dev, mac, vid, &ent, &idx, is_valid);
1210 /* If this is a read, just finish now */
1211 if (op)
1212 return ret;
1213
1214 /* We could not find a matching MAC, so reset to a new entry */
1215 if (ret) {
1216 fwd_entry = 0;
1217 idx = 1;
1218 }
1219
1220 memset(&ent, 0, sizeof(ent));
1221 ent.port = port;
1222 ent.is_valid = is_valid;
1223 ent.vid = vid;
1224 ent.is_static = true;
1225 memcpy(ent.mac, addr, ETH_ALEN);
1226 b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
1227
1228 b53_write64(dev, B53_ARLIO_PAGE,
1229 B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
1230 b53_write32(dev, B53_ARLIO_PAGE,
1231 B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
1232
1233 return b53_arl_rw_op(dev, 0);
1234 }
1235
1236 int b53_fdb_add(struct dsa_switch *ds, int port,
1237 const unsigned char *addr, u16 vid)
1238 {
1239 struct b53_device *priv = ds->priv;
1240
1241 /* 5325 and 5365 require some more massaging, but could
1242 * be supported eventually
1243 */
1244 if (is5325(priv) || is5365(priv))
1245 return -EOPNOTSUPP;
1246
1247 return b53_arl_op(priv, 0, port, addr, vid, true);
1248 }
1249 EXPORT_SYMBOL(b53_fdb_add);
1250
1251 int b53_fdb_del(struct dsa_switch *ds, int port,
1252 const unsigned char *addr, u16 vid)
1253 {
1254 struct b53_device *priv = ds->priv;
1255
1256 return b53_arl_op(priv, 0, port, addr, vid, false);
1257 }
1258 EXPORT_SYMBOL(b53_fdb_del);
1259
1260 static int b53_arl_search_wait(struct b53_device *dev)
1261 {
1262 unsigned int timeout = 1000;
1263 u8 reg;
1264
1265 do {
1266 b53_read8(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, &reg);
1267 if (!(reg & ARL_SRCH_STDN))
1268 return 0;
1269
1270 if (reg & ARL_SRCH_VLID)
1271 return 0;
1272
1273 usleep_range(1000, 2000);
1274 } while (timeout--);
1275
1276 return -ETIMEDOUT;
1277 }
1278
1279 static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
1280 struct b53_arl_entry *ent)
1281 {
1282 u64 mac_vid;
1283 u32 fwd_entry;
1284
1285 b53_read64(dev, B53_ARLIO_PAGE,
1286 B53_ARL_SRCH_RSTL_MACVID(idx), &mac_vid);
1287 b53_read32(dev, B53_ARLIO_PAGE,
1288 B53_ARL_SRCH_RSTL(idx), &fwd_entry);
1289 b53_arl_to_entry(ent, mac_vid, fwd_entry);
1290 }
1291
1292 static int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
1293 dsa_fdb_dump_cb_t *cb, void *data)
1294 {
1295 if (!ent->is_valid)
1296 return 0;
1297
1298 if (port != ent->port)
1299 return 0;
1300
1301 return cb(ent->mac, ent->vid, ent->is_static, data);
1302 }
1303
1304 int b53_fdb_dump(struct dsa_switch *ds, int port,
1305 dsa_fdb_dump_cb_t *cb, void *data)
1306 {
1307 struct b53_device *priv = ds->priv;
1308 struct b53_arl_entry results[2];
1309 unsigned int count = 0;
1310 int ret;
1311 u8 reg;
1312
1313 /* Start search operation */
1314 reg = ARL_SRCH_STDN;
1315 b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg);
1316
1317 do {
1318 ret = b53_arl_search_wait(priv);
1319 if (ret)
1320 return ret;
1321
1322 b53_arl_search_rd(priv, 0, &results[0]);
1323 ret = b53_fdb_copy(port, &results[0], cb, data);
1324 if (ret)
1325 return ret;
1326
1327 if (priv->num_arl_entries > 2) {
1328 b53_arl_search_rd(priv, 1, &results[1]);
1329 ret = b53_fdb_copy(port, &results[1], cb, data);
1330 if (ret)
1331 return ret;
1332
1333 if (!results[0].is_valid && !results[1].is_valid)
1334 break;
1335 }
1336
1337 } while (count++ < 1024);
1338
1339 return 0;
1340 }
1341 EXPORT_SYMBOL(b53_fdb_dump);
1342
1343 int b53_br_join(struct dsa_switch *ds, int port, struct net_device *br)
1344 {
1345 struct b53_device *dev = ds->priv;
1346 s8 cpu_port = ds->ports[port].cpu_dp->index;
1347 u16 pvlan, reg;
1348 unsigned int i;
1349
1350 /* Make this port leave the all VLANs join since we will have proper
1351 * VLAN entries from now on
1352 */
1353 if (is58xx(dev)) {
1354 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, &reg);
1355 reg &= ~BIT(port);
1356 if ((reg & BIT(cpu_port)) == BIT(cpu_port))
1357 reg &= ~BIT(cpu_port);
1358 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1359 }
1360
1361 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1362
1363 b53_for_each_port(dev, i) {
1364 if (dsa_to_port(ds, i)->bridge_dev != br)
1365 continue;
1366
1367 /* Add this local port to the remote port VLAN control
1368 * membership and update the remote port bitmask
1369 */
1370 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
1371 reg |= BIT(port);
1372 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1373 dev->ports[i].vlan_ctl_mask = reg;
1374
1375 pvlan |= BIT(i);
1376 }
1377
1378 /* Configure the local port VLAN control membership to include
1379 * remote ports and update the local port bitmask
1380 */
1381 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1382 dev->ports[port].vlan_ctl_mask = pvlan;
1383
1384 return 0;
1385 }
1386 EXPORT_SYMBOL(b53_br_join);
1387
1388 void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *br)
1389 {
1390 struct b53_device *dev = ds->priv;
1391 struct b53_vlan *vl = &dev->vlans[0];
1392 s8 cpu_port = ds->ports[port].cpu_dp->index;
1393 unsigned int i;
1394 u16 pvlan, reg, pvid;
1395
1396 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1397
1398 b53_for_each_port(dev, i) {
1399 /* Don't touch the remaining ports */
1400 if (dsa_to_port(ds, i)->bridge_dev != br)
1401 continue;
1402
1403 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &reg);
1404 reg &= ~BIT(port);
1405 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1406 dev->ports[port].vlan_ctl_mask = reg;
1407
1408 /* Prevent self removal to preserve isolation */
1409 if (port != i)
1410 pvlan &= ~BIT(i);
1411 }
1412
1413 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1414 dev->ports[port].vlan_ctl_mask = pvlan;
1415
1416 if (is5325(dev) || is5365(dev))
1417 pvid = 1;
1418 else
1419 pvid = 0;
1420
1421 /* Make this port join all VLANs without VLAN entries */
1422 if (is58xx(dev)) {
1423 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, &reg);
1424 reg |= BIT(port);
1425 if (!(reg & BIT(cpu_port)))
1426 reg |= BIT(cpu_port);
1427 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1428 } else {
1429 b53_get_vlan_entry(dev, pvid, vl);
1430 vl->members |= BIT(port) | BIT(cpu_port);
1431 vl->untag |= BIT(port) | BIT(cpu_port);
1432 b53_set_vlan_entry(dev, pvid, vl);
1433 }
1434 }
1435 EXPORT_SYMBOL(b53_br_leave);
1436
1437 void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state)
1438 {
1439 struct b53_device *dev = ds->priv;
1440 u8 hw_state;
1441 u8 reg;
1442
1443 switch (state) {
1444 case BR_STATE_DISABLED:
1445 hw_state = PORT_CTRL_DIS_STATE;
1446 break;
1447 case BR_STATE_LISTENING:
1448 hw_state = PORT_CTRL_LISTEN_STATE;
1449 break;
1450 case BR_STATE_LEARNING:
1451 hw_state = PORT_CTRL_LEARN_STATE;
1452 break;
1453 case BR_STATE_FORWARDING:
1454 hw_state = PORT_CTRL_FWD_STATE;
1455 break;
1456 case BR_STATE_BLOCKING:
1457 hw_state = PORT_CTRL_BLOCK_STATE;
1458 break;
1459 default:
1460 dev_err(ds->dev, "invalid STP state: %d\n", state);
1461 return;
1462 }
1463
1464 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), &reg);
1465 reg &= ~PORT_CTRL_STP_STATE_MASK;
1466 reg |= hw_state;
1467 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
1468 }
1469 EXPORT_SYMBOL(b53_br_set_stp_state);
1470
1471 void b53_br_fast_age(struct dsa_switch *ds, int port)
1472 {
1473 struct b53_device *dev = ds->priv;
1474
1475 if (b53_fast_age_port(dev, port))
1476 dev_err(ds->dev, "fast ageing failed\n");
1477 }
1478 EXPORT_SYMBOL(b53_br_fast_age);
1479
1480 static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port)
1481 {
1482 /* Broadcom switches will accept enabling Broadcom tags on the
1483 * following ports: 5, 7 and 8, any other port is not supported
1484 */
1485 switch (port) {
1486 case B53_CPU_PORT_25:
1487 case 7:
1488 case B53_CPU_PORT:
1489 return true;
1490 }
1491
1492 dev_warn(ds->dev, "Port %d is not Broadcom tag capable\n", port);
1493 return false;
1494 }
1495
1496 enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port)
1497 {
1498 struct b53_device *dev = ds->priv;
1499
1500 /* Older models (5325, 5365) support a different tag format that we do
1501 * not support in net/dsa/tag_brcm.c yet. 539x and 531x5 require managed
1502 * mode to be turned on which means we need to specifically manage ARL
1503 * misses on multicast addresses (TBD).
1504 */
1505 if (is5325(dev) || is5365(dev) || is539x(dev) || is531x5(dev) ||
1506 !b53_can_enable_brcm_tags(ds, port))
1507 return DSA_TAG_PROTO_NONE;
1508
1509 /* Broadcom BCM58xx chips have a flow accelerator on Port 8
1510 * which requires us to use the prepended Broadcom tag type
1511 */
1512 if (dev->chip_id == BCM58XX_DEVICE_ID && port == B53_CPU_PORT)
1513 return DSA_TAG_PROTO_BRCM_PREPEND;
1514
1515 return DSA_TAG_PROTO_BRCM;
1516 }
1517 EXPORT_SYMBOL(b53_get_tag_protocol);
1518
1519 int b53_mirror_add(struct dsa_switch *ds, int port,
1520 struct dsa_mall_mirror_tc_entry *mirror, bool ingress)
1521 {
1522 struct b53_device *dev = ds->priv;
1523 u16 reg, loc;
1524
1525 if (ingress)
1526 loc = B53_IG_MIR_CTL;
1527 else
1528 loc = B53_EG_MIR_CTL;
1529
1530 b53_read16(dev, B53_MGMT_PAGE, loc, &reg);
1531 reg &= ~MIRROR_MASK;
1532 reg |= BIT(port);
1533 b53_write16(dev, B53_MGMT_PAGE, loc, reg);
1534
1535 b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, &reg);
1536 reg &= ~CAP_PORT_MASK;
1537 reg |= mirror->to_local_port;
1538 reg |= MIRROR_EN;
1539 b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
1540
1541 return 0;
1542 }
1543 EXPORT_SYMBOL(b53_mirror_add);
1544
1545 void b53_mirror_del(struct dsa_switch *ds, int port,
1546 struct dsa_mall_mirror_tc_entry *mirror)
1547 {
1548 struct b53_device *dev = ds->priv;
1549 bool loc_disable = false, other_loc_disable = false;
1550 u16 reg, loc;
1551
1552 if (mirror->ingress)
1553 loc = B53_IG_MIR_CTL;
1554 else
1555 loc = B53_EG_MIR_CTL;
1556
1557 /* Update the desired ingress/egress register */
1558 b53_read16(dev, B53_MGMT_PAGE, loc, &reg);
1559 reg &= ~BIT(port);
1560 if (!(reg & MIRROR_MASK))
1561 loc_disable = true;
1562 b53_write16(dev, B53_MGMT_PAGE, loc, reg);
1563
1564 /* Now look at the other one to know if we can disable mirroring
1565 * entirely
1566 */
1567 if (mirror->ingress)
1568 b53_read16(dev, B53_MGMT_PAGE, B53_EG_MIR_CTL, &reg);
1569 else
1570 b53_read16(dev, B53_MGMT_PAGE, B53_IG_MIR_CTL, &reg);
1571 if (!(reg & MIRROR_MASK))
1572 other_loc_disable = true;
1573
1574 b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, &reg);
1575 /* Both no longer have ports, let's disable mirroring */
1576 if (loc_disable && other_loc_disable) {
1577 reg &= ~MIRROR_EN;
1578 reg &= ~mirror->to_local_port;
1579 }
1580 b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
1581 }
1582 EXPORT_SYMBOL(b53_mirror_del);
1583
1584 void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
1585 {
1586 struct b53_device *dev = ds->priv;
1587 u16 reg;
1588
1589 b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, &reg);
1590 if (enable)
1591 reg |= BIT(port);
1592 else
1593 reg &= ~BIT(port);
1594 b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg);
1595 }
1596 EXPORT_SYMBOL(b53_eee_enable_set);
1597
1598
1599 /* Returns 0 if EEE was not enabled, or 1 otherwise
1600 */
1601 int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy)
1602 {
1603 int ret;
1604
1605 ret = phy_init_eee(phy, 0);
1606 if (ret)
1607 return 0;
1608
1609 b53_eee_enable_set(ds, port, true);
1610
1611 return 1;
1612 }
1613 EXPORT_SYMBOL(b53_eee_init);
1614
1615 int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
1616 {
1617 struct b53_device *dev = ds->priv;
1618 struct ethtool_eee *p = &dev->ports[port].eee;
1619 u16 reg;
1620
1621 if (is5325(dev) || is5365(dev))
1622 return -EOPNOTSUPP;
1623
1624 b53_read16(dev, B53_EEE_PAGE, B53_EEE_LPI_INDICATE, &reg);
1625 e->eee_enabled = p->eee_enabled;
1626 e->eee_active = !!(reg & BIT(port));
1627
1628 return 0;
1629 }
1630 EXPORT_SYMBOL(b53_get_mac_eee);
1631
1632 int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
1633 {
1634 struct b53_device *dev = ds->priv;
1635 struct ethtool_eee *p = &dev->ports[port].eee;
1636
1637 if (is5325(dev) || is5365(dev))
1638 return -EOPNOTSUPP;
1639
1640 p->eee_enabled = e->eee_enabled;
1641 b53_eee_enable_set(ds, port, e->eee_enabled);
1642
1643 return 0;
1644 }
1645 EXPORT_SYMBOL(b53_set_mac_eee);
1646
1647 static const struct dsa_switch_ops b53_switch_ops = {
1648 .get_tag_protocol = b53_get_tag_protocol,
1649 .setup = b53_setup,
1650 .get_strings = b53_get_strings,
1651 .get_ethtool_stats = b53_get_ethtool_stats,
1652 .get_sset_count = b53_get_sset_count,
1653 .phy_read = b53_phy_read16,
1654 .phy_write = b53_phy_write16,
1655 .adjust_link = b53_adjust_link,
1656 .port_enable = b53_enable_port,
1657 .port_disable = b53_disable_port,
1658 .get_mac_eee = b53_get_mac_eee,
1659 .set_mac_eee = b53_set_mac_eee,
1660 .port_bridge_join = b53_br_join,
1661 .port_bridge_leave = b53_br_leave,
1662 .port_stp_state_set = b53_br_set_stp_state,
1663 .port_fast_age = b53_br_fast_age,
1664 .port_vlan_filtering = b53_vlan_filtering,
1665 .port_vlan_prepare = b53_vlan_prepare,
1666 .port_vlan_add = b53_vlan_add,
1667 .port_vlan_del = b53_vlan_del,
1668 .port_fdb_dump = b53_fdb_dump,
1669 .port_fdb_add = b53_fdb_add,
1670 .port_fdb_del = b53_fdb_del,
1671 .port_mirror_add = b53_mirror_add,
1672 .port_mirror_del = b53_mirror_del,
1673 };
1674
1675 struct b53_chip_data {
1676 u32 chip_id;
1677 const char *dev_name;
1678 u16 vlans;
1679 u16 enabled_ports;
1680 u8 cpu_port;
1681 u8 vta_regs[3];
1682 u8 arl_entries;
1683 u8 duplex_reg;
1684 u8 jumbo_pm_reg;
1685 u8 jumbo_size_reg;
1686 };
1687
1688 #define B53_VTA_REGS \
1689 { B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY }
1690 #define B53_VTA_REGS_9798 \
1691 { B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 }
1692 #define B53_VTA_REGS_63XX \
1693 { B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX }
1694
1695 static const struct b53_chip_data b53_switch_chips[] = {
1696 {
1697 .chip_id = BCM5325_DEVICE_ID,
1698 .dev_name = "BCM5325",
1699 .vlans = 16,
1700 .enabled_ports = 0x1f,
1701 .arl_entries = 2,
1702 .cpu_port = B53_CPU_PORT_25,
1703 .duplex_reg = B53_DUPLEX_STAT_FE,
1704 },
1705 {
1706 .chip_id = BCM5365_DEVICE_ID,
1707 .dev_name = "BCM5365",
1708 .vlans = 256,
1709 .enabled_ports = 0x1f,
1710 .arl_entries = 2,
1711 .cpu_port = B53_CPU_PORT_25,
1712 .duplex_reg = B53_DUPLEX_STAT_FE,
1713 },
1714 {
1715 .chip_id = BCM5395_DEVICE_ID,
1716 .dev_name = "BCM5395",
1717 .vlans = 4096,
1718 .enabled_ports = 0x1f,
1719 .arl_entries = 4,
1720 .cpu_port = B53_CPU_PORT,
1721 .vta_regs = B53_VTA_REGS,
1722 .duplex_reg = B53_DUPLEX_STAT_GE,
1723 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1724 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1725 },
1726 {
1727 .chip_id = BCM5397_DEVICE_ID,
1728 .dev_name = "BCM5397",
1729 .vlans = 4096,
1730 .enabled_ports = 0x1f,
1731 .arl_entries = 4,
1732 .cpu_port = B53_CPU_PORT,
1733 .vta_regs = B53_VTA_REGS_9798,
1734 .duplex_reg = B53_DUPLEX_STAT_GE,
1735 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1736 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1737 },
1738 {
1739 .chip_id = BCM5398_DEVICE_ID,
1740 .dev_name = "BCM5398",
1741 .vlans = 4096,
1742 .enabled_ports = 0x7f,
1743 .arl_entries = 4,
1744 .cpu_port = B53_CPU_PORT,
1745 .vta_regs = B53_VTA_REGS_9798,
1746 .duplex_reg = B53_DUPLEX_STAT_GE,
1747 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1748 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1749 },
1750 {
1751 .chip_id = BCM53115_DEVICE_ID,
1752 .dev_name = "BCM53115",
1753 .vlans = 4096,
1754 .enabled_ports = 0x1f,
1755 .arl_entries = 4,
1756 .vta_regs = B53_VTA_REGS,
1757 .cpu_port = B53_CPU_PORT,
1758 .duplex_reg = B53_DUPLEX_STAT_GE,
1759 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1760 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1761 },
1762 {
1763 .chip_id = BCM53125_DEVICE_ID,
1764 .dev_name = "BCM53125",
1765 .vlans = 4096,
1766 .enabled_ports = 0xff,
1767 .arl_entries = 4,
1768 .cpu_port = B53_CPU_PORT,
1769 .vta_regs = B53_VTA_REGS,
1770 .duplex_reg = B53_DUPLEX_STAT_GE,
1771 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1772 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1773 },
1774 {
1775 .chip_id = BCM53128_DEVICE_ID,
1776 .dev_name = "BCM53128",
1777 .vlans = 4096,
1778 .enabled_ports = 0x1ff,
1779 .arl_entries = 4,
1780 .cpu_port = B53_CPU_PORT,
1781 .vta_regs = B53_VTA_REGS,
1782 .duplex_reg = B53_DUPLEX_STAT_GE,
1783 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1784 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1785 },
1786 {
1787 .chip_id = BCM63XX_DEVICE_ID,
1788 .dev_name = "BCM63xx",
1789 .vlans = 4096,
1790 .enabled_ports = 0, /* pdata must provide them */
1791 .arl_entries = 4,
1792 .cpu_port = B53_CPU_PORT,
1793 .vta_regs = B53_VTA_REGS_63XX,
1794 .duplex_reg = B53_DUPLEX_STAT_63XX,
1795 .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
1796 .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
1797 },
1798 {
1799 .chip_id = BCM53010_DEVICE_ID,
1800 .dev_name = "BCM53010",
1801 .vlans = 4096,
1802 .enabled_ports = 0x1f,
1803 .arl_entries = 4,
1804 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1805 .vta_regs = B53_VTA_REGS,
1806 .duplex_reg = B53_DUPLEX_STAT_GE,
1807 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1808 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1809 },
1810 {
1811 .chip_id = BCM53011_DEVICE_ID,
1812 .dev_name = "BCM53011",
1813 .vlans = 4096,
1814 .enabled_ports = 0x1bf,
1815 .arl_entries = 4,
1816 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1817 .vta_regs = B53_VTA_REGS,
1818 .duplex_reg = B53_DUPLEX_STAT_GE,
1819 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1820 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1821 },
1822 {
1823 .chip_id = BCM53012_DEVICE_ID,
1824 .dev_name = "BCM53012",
1825 .vlans = 4096,
1826 .enabled_ports = 0x1bf,
1827 .arl_entries = 4,
1828 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1829 .vta_regs = B53_VTA_REGS,
1830 .duplex_reg = B53_DUPLEX_STAT_GE,
1831 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1832 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1833 },
1834 {
1835 .chip_id = BCM53018_DEVICE_ID,
1836 .dev_name = "BCM53018",
1837 .vlans = 4096,
1838 .enabled_ports = 0x1f,
1839 .arl_entries = 4,
1840 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1841 .vta_regs = B53_VTA_REGS,
1842 .duplex_reg = B53_DUPLEX_STAT_GE,
1843 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1844 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1845 },
1846 {
1847 .chip_id = BCM53019_DEVICE_ID,
1848 .dev_name = "BCM53019",
1849 .vlans = 4096,
1850 .enabled_ports = 0x1f,
1851 .arl_entries = 4,
1852 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
1853 .vta_regs = B53_VTA_REGS,
1854 .duplex_reg = B53_DUPLEX_STAT_GE,
1855 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1856 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1857 },
1858 {
1859 .chip_id = BCM58XX_DEVICE_ID,
1860 .dev_name = "BCM585xx/586xx/88312",
1861 .vlans = 4096,
1862 .enabled_ports = 0x1ff,
1863 .arl_entries = 4,
1864 .cpu_port = B53_CPU_PORT,
1865 .vta_regs = B53_VTA_REGS,
1866 .duplex_reg = B53_DUPLEX_STAT_GE,
1867 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1868 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1869 },
1870 {
1871 .chip_id = BCM7445_DEVICE_ID,
1872 .dev_name = "BCM7445",
1873 .vlans = 4096,
1874 .enabled_ports = 0x1ff,
1875 .arl_entries = 4,
1876 .cpu_port = B53_CPU_PORT,
1877 .vta_regs = B53_VTA_REGS,
1878 .duplex_reg = B53_DUPLEX_STAT_GE,
1879 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1880 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1881 },
1882 {
1883 .chip_id = BCM7278_DEVICE_ID,
1884 .dev_name = "BCM7278",
1885 .vlans = 4096,
1886 .enabled_ports = 0x1ff,
1887 .arl_entries= 4,
1888 .cpu_port = B53_CPU_PORT,
1889 .vta_regs = B53_VTA_REGS,
1890 .duplex_reg = B53_DUPLEX_STAT_GE,
1891 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
1892 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
1893 },
1894 };
1895
1896 static int b53_switch_init(struct b53_device *dev)
1897 {
1898 unsigned int i;
1899 int ret;
1900
1901 for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) {
1902 const struct b53_chip_data *chip = &b53_switch_chips[i];
1903
1904 if (chip->chip_id == dev->chip_id) {
1905 if (!dev->enabled_ports)
1906 dev->enabled_ports = chip->enabled_ports;
1907 dev->name = chip->dev_name;
1908 dev->duplex_reg = chip->duplex_reg;
1909 dev->vta_regs[0] = chip->vta_regs[0];
1910 dev->vta_regs[1] = chip->vta_regs[1];
1911 dev->vta_regs[2] = chip->vta_regs[2];
1912 dev->jumbo_pm_reg = chip->jumbo_pm_reg;
1913 dev->cpu_port = chip->cpu_port;
1914 dev->num_vlans = chip->vlans;
1915 dev->num_arl_entries = chip->arl_entries;
1916 break;
1917 }
1918 }
1919
1920 /* check which BCM5325x version we have */
1921 if (is5325(dev)) {
1922 u8 vc4;
1923
1924 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
1925
1926 /* check reserved bits */
1927 switch (vc4 & 3) {
1928 case 1:
1929 /* BCM5325E */
1930 break;
1931 case 3:
1932 /* BCM5325F - do not use port 4 */
1933 dev->enabled_ports &= ~BIT(4);
1934 break;
1935 default:
1936 /* On the BCM47XX SoCs this is the supported internal switch.*/
1937 #ifndef CONFIG_BCM47XX
1938 /* BCM5325M */
1939 return -EINVAL;
1940 #else
1941 break;
1942 #endif
1943 }
1944 } else if (dev->chip_id == BCM53115_DEVICE_ID) {
1945 u64 strap_value;
1946
1947 b53_read48(dev, B53_STAT_PAGE, B53_STRAP_VALUE, &strap_value);
1948 /* use second IMP port if GMII is enabled */
1949 if (strap_value & SV_GMII_CTRL_115)
1950 dev->cpu_port = 5;
1951 }
1952
1953 /* cpu port is always last */
1954 dev->num_ports = dev->cpu_port + 1;
1955 dev->enabled_ports |= BIT(dev->cpu_port);
1956
1957 dev->ports = devm_kzalloc(dev->dev,
1958 sizeof(struct b53_port) * dev->num_ports,
1959 GFP_KERNEL);
1960 if (!dev->ports)
1961 return -ENOMEM;
1962
1963 dev->vlans = devm_kzalloc(dev->dev,
1964 sizeof(struct b53_vlan) * dev->num_vlans,
1965 GFP_KERNEL);
1966 if (!dev->vlans)
1967 return -ENOMEM;
1968
1969 dev->reset_gpio = b53_switch_get_reset_gpio(dev);
1970 if (dev->reset_gpio >= 0) {
1971 ret = devm_gpio_request_one(dev->dev, dev->reset_gpio,
1972 GPIOF_OUT_INIT_HIGH, "robo_reset");
1973 if (ret)
1974 return ret;
1975 }
1976
1977 return 0;
1978 }
1979
1980 struct b53_device *b53_switch_alloc(struct device *base,
1981 const struct b53_io_ops *ops,
1982 void *priv)
1983 {
1984 struct dsa_switch *ds;
1985 struct b53_device *dev;
1986
1987 ds = dsa_switch_alloc(base, DSA_MAX_PORTS);
1988 if (!ds)
1989 return NULL;
1990
1991 dev = devm_kzalloc(base, sizeof(*dev), GFP_KERNEL);
1992 if (!dev)
1993 return NULL;
1994
1995 ds->priv = dev;
1996 dev->dev = base;
1997
1998 dev->ds = ds;
1999 dev->priv = priv;
2000 dev->ops = ops;
2001 ds->ops = &b53_switch_ops;
2002 mutex_init(&dev->reg_mutex);
2003 mutex_init(&dev->stats_mutex);
2004
2005 return dev;
2006 }
2007 EXPORT_SYMBOL(b53_switch_alloc);
2008
2009 int b53_switch_detect(struct b53_device *dev)
2010 {
2011 u32 id32;
2012 u16 tmp;
2013 u8 id8;
2014 int ret;
2015
2016 ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8);
2017 if (ret)
2018 return ret;
2019
2020 switch (id8) {
2021 case 0:
2022 /* BCM5325 and BCM5365 do not have this register so reads
2023 * return 0. But the read operation did succeed, so assume this
2024 * is one of them.
2025 *
2026 * Next check if we can write to the 5325's VTA register; for
2027 * 5365 it is read only.
2028 */
2029 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
2030 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
2031
2032 if (tmp == 0xf)
2033 dev->chip_id = BCM5325_DEVICE_ID;
2034 else
2035 dev->chip_id = BCM5365_DEVICE_ID;
2036 break;
2037 case BCM5395_DEVICE_ID:
2038 case BCM5397_DEVICE_ID:
2039 case BCM5398_DEVICE_ID:
2040 dev->chip_id = id8;
2041 break;
2042 default:
2043 ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32);
2044 if (ret)
2045 return ret;
2046
2047 switch (id32) {
2048 case BCM53115_DEVICE_ID:
2049 case BCM53125_DEVICE_ID:
2050 case BCM53128_DEVICE_ID:
2051 case BCM53010_DEVICE_ID:
2052 case BCM53011_DEVICE_ID:
2053 case BCM53012_DEVICE_ID:
2054 case BCM53018_DEVICE_ID:
2055 case BCM53019_DEVICE_ID:
2056 dev->chip_id = id32;
2057 break;
2058 default:
2059 pr_err("unsupported switch detected (BCM53%02x/BCM%x)\n",
2060 id8, id32);
2061 return -ENODEV;
2062 }
2063 }
2064
2065 if (dev->chip_id == BCM5325_DEVICE_ID)
2066 return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
2067 &dev->core_rev);
2068 else
2069 return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
2070 &dev->core_rev);
2071 }
2072 EXPORT_SYMBOL(b53_switch_detect);
2073
2074 int b53_switch_register(struct b53_device *dev)
2075 {
2076 int ret;
2077
2078 if (dev->pdata) {
2079 dev->chip_id = dev->pdata->chip_id;
2080 dev->enabled_ports = dev->pdata->enabled_ports;
2081 }
2082
2083 if (!dev->chip_id && b53_switch_detect(dev))
2084 return -EINVAL;
2085
2086 ret = b53_switch_init(dev);
2087 if (ret)
2088 return ret;
2089
2090 pr_info("found switch: %s, rev %i\n", dev->name, dev->core_rev);
2091
2092 return dsa_register_switch(dev->ds);
2093 }
2094 EXPORT_SYMBOL(b53_switch_register);
2095
2096 MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
2097 MODULE_DESCRIPTION("B53 switch library");
2098 MODULE_LICENSE("Dual BSD/GPL");
Linux with added FPC-III support