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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/phylink.h>
30#include <linux/etherdevice.h>
31#include <linux/if_bridge.h>
32#include <net/dsa.h>
33
34#include "b53_regs.h"
35#include "b53_priv.h"
36
37struct b53_mib_desc {
38 u8 size;
39 u8 offset;
40 const char *name;
41};
42
43/* BCM5365 MIB counters */
44static const struct b53_mib_desc b53_mibs_65[] = {
45 { 8, 0x00, "TxOctets" },
46 { 4, 0x08, "TxDropPkts" },
47 { 4, 0x10, "TxBroadcastPkts" },
48 { 4, 0x14, "TxMulticastPkts" },
49 { 4, 0x18, "TxUnicastPkts" },
50 { 4, 0x1c, "TxCollisions" },
51 { 4, 0x20, "TxSingleCollision" },
52 { 4, 0x24, "TxMultipleCollision" },
53 { 4, 0x28, "TxDeferredTransmit" },
54 { 4, 0x2c, "TxLateCollision" },
55 { 4, 0x30, "TxExcessiveCollision" },
56 { 4, 0x38, "TxPausePkts" },
57 { 8, 0x44, "RxOctets" },
58 { 4, 0x4c, "RxUndersizePkts" },
59 { 4, 0x50, "RxPausePkts" },
60 { 4, 0x54, "Pkts64Octets" },
61 { 4, 0x58, "Pkts65to127Octets" },
62 { 4, 0x5c, "Pkts128to255Octets" },
63 { 4, 0x60, "Pkts256to511Octets" },
64 { 4, 0x64, "Pkts512to1023Octets" },
65 { 4, 0x68, "Pkts1024to1522Octets" },
66 { 4, 0x6c, "RxOversizePkts" },
67 { 4, 0x70, "RxJabbers" },
68 { 4, 0x74, "RxAlignmentErrors" },
69 { 4, 0x78, "RxFCSErrors" },
70 { 8, 0x7c, "RxGoodOctets" },
71 { 4, 0x84, "RxDropPkts" },
72 { 4, 0x88, "RxUnicastPkts" },
73 { 4, 0x8c, "RxMulticastPkts" },
74 { 4, 0x90, "RxBroadcastPkts" },
75 { 4, 0x94, "RxSAChanges" },
76 { 4, 0x98, "RxFragments" },
77};
78
79#define B53_MIBS_65_SIZE ARRAY_SIZE(b53_mibs_65)
80
81/* BCM63xx MIB counters */
82static const struct b53_mib_desc b53_mibs_63xx[] = {
83 { 8, 0x00, "TxOctets" },
84 { 4, 0x08, "TxDropPkts" },
85 { 4, 0x0c, "TxQoSPkts" },
86 { 4, 0x10, "TxBroadcastPkts" },
87 { 4, 0x14, "TxMulticastPkts" },
88 { 4, 0x18, "TxUnicastPkts" },
89 { 4, 0x1c, "TxCollisions" },
90 { 4, 0x20, "TxSingleCollision" },
91 { 4, 0x24, "TxMultipleCollision" },
92 { 4, 0x28, "TxDeferredTransmit" },
93 { 4, 0x2c, "TxLateCollision" },
94 { 4, 0x30, "TxExcessiveCollision" },
95 { 4, 0x38, "TxPausePkts" },
96 { 8, 0x3c, "TxQoSOctets" },
97 { 8, 0x44, "RxOctets" },
98 { 4, 0x4c, "RxUndersizePkts" },
99 { 4, 0x50, "RxPausePkts" },
100 { 4, 0x54, "Pkts64Octets" },
101 { 4, 0x58, "Pkts65to127Octets" },
102 { 4, 0x5c, "Pkts128to255Octets" },
103 { 4, 0x60, "Pkts256to511Octets" },
104 { 4, 0x64, "Pkts512to1023Octets" },
105 { 4, 0x68, "Pkts1024to1522Octets" },
106 { 4, 0x6c, "RxOversizePkts" },
107 { 4, 0x70, "RxJabbers" },
108 { 4, 0x74, "RxAlignmentErrors" },
109 { 4, 0x78, "RxFCSErrors" },
110 { 8, 0x7c, "RxGoodOctets" },
111 { 4, 0x84, "RxDropPkts" },
112 { 4, 0x88, "RxUnicastPkts" },
113 { 4, 0x8c, "RxMulticastPkts" },
114 { 4, 0x90, "RxBroadcastPkts" },
115 { 4, 0x94, "RxSAChanges" },
116 { 4, 0x98, "RxFragments" },
117 { 4, 0xa0, "RxSymbolErrors" },
118 { 4, 0xa4, "RxQoSPkts" },
119 { 8, 0xa8, "RxQoSOctets" },
120 { 4, 0xb0, "Pkts1523to2047Octets" },
121 { 4, 0xb4, "Pkts2048to4095Octets" },
122 { 4, 0xb8, "Pkts4096to8191Octets" },
123 { 4, 0xbc, "Pkts8192to9728Octets" },
124 { 4, 0xc0, "RxDiscarded" },
125};
126
127#define B53_MIBS_63XX_SIZE ARRAY_SIZE(b53_mibs_63xx)
128
129/* MIB counters */
130static const struct b53_mib_desc b53_mibs[] = {
131 { 8, 0x00, "TxOctets" },
132 { 4, 0x08, "TxDropPkts" },
133 { 4, 0x10, "TxBroadcastPkts" },
134 { 4, 0x14, "TxMulticastPkts" },
135 { 4, 0x18, "TxUnicastPkts" },
136 { 4, 0x1c, "TxCollisions" },
137 { 4, 0x20, "TxSingleCollision" },
138 { 4, 0x24, "TxMultipleCollision" },
139 { 4, 0x28, "TxDeferredTransmit" },
140 { 4, 0x2c, "TxLateCollision" },
141 { 4, 0x30, "TxExcessiveCollision" },
142 { 4, 0x38, "TxPausePkts" },
143 { 8, 0x50, "RxOctets" },
144 { 4, 0x58, "RxUndersizePkts" },
145 { 4, 0x5c, "RxPausePkts" },
146 { 4, 0x60, "Pkts64Octets" },
147 { 4, 0x64, "Pkts65to127Octets" },
148 { 4, 0x68, "Pkts128to255Octets" },
149 { 4, 0x6c, "Pkts256to511Octets" },
150 { 4, 0x70, "Pkts512to1023Octets" },
151 { 4, 0x74, "Pkts1024to1522Octets" },
152 { 4, 0x78, "RxOversizePkts" },
153 { 4, 0x7c, "RxJabbers" },
154 { 4, 0x80, "RxAlignmentErrors" },
155 { 4, 0x84, "RxFCSErrors" },
156 { 8, 0x88, "RxGoodOctets" },
157 { 4, 0x90, "RxDropPkts" },
158 { 4, 0x94, "RxUnicastPkts" },
159 { 4, 0x98, "RxMulticastPkts" },
160 { 4, 0x9c, "RxBroadcastPkts" },
161 { 4, 0xa0, "RxSAChanges" },
162 { 4, 0xa4, "RxFragments" },
163 { 4, 0xa8, "RxJumboPkts" },
164 { 4, 0xac, "RxSymbolErrors" },
165 { 4, 0xc0, "RxDiscarded" },
166};
167
168#define B53_MIBS_SIZE ARRAY_SIZE(b53_mibs)
169
170static const struct b53_mib_desc b53_mibs_58xx[] = {
171 { 8, 0x00, "TxOctets" },
172 { 4, 0x08, "TxDropPkts" },
173 { 4, 0x0c, "TxQPKTQ0" },
174 { 4, 0x10, "TxBroadcastPkts" },
175 { 4, 0x14, "TxMulticastPkts" },
176 { 4, 0x18, "TxUnicastPKts" },
177 { 4, 0x1c, "TxCollisions" },
178 { 4, 0x20, "TxSingleCollision" },
179 { 4, 0x24, "TxMultipleCollision" },
180 { 4, 0x28, "TxDeferredCollision" },
181 { 4, 0x2c, "TxLateCollision" },
182 { 4, 0x30, "TxExcessiveCollision" },
183 { 4, 0x34, "TxFrameInDisc" },
184 { 4, 0x38, "TxPausePkts" },
185 { 4, 0x3c, "TxQPKTQ1" },
186 { 4, 0x40, "TxQPKTQ2" },
187 { 4, 0x44, "TxQPKTQ3" },
188 { 4, 0x48, "TxQPKTQ4" },
189 { 4, 0x4c, "TxQPKTQ5" },
190 { 8, 0x50, "RxOctets" },
191 { 4, 0x58, "RxUndersizePkts" },
192 { 4, 0x5c, "RxPausePkts" },
193 { 4, 0x60, "RxPkts64Octets" },
194 { 4, 0x64, "RxPkts65to127Octets" },
195 { 4, 0x68, "RxPkts128to255Octets" },
196 { 4, 0x6c, "RxPkts256to511Octets" },
197 { 4, 0x70, "RxPkts512to1023Octets" },
198 { 4, 0x74, "RxPkts1024toMaxPktsOctets" },
199 { 4, 0x78, "RxOversizePkts" },
200 { 4, 0x7c, "RxJabbers" },
201 { 4, 0x80, "RxAlignmentErrors" },
202 { 4, 0x84, "RxFCSErrors" },
203 { 8, 0x88, "RxGoodOctets" },
204 { 4, 0x90, "RxDropPkts" },
205 { 4, 0x94, "RxUnicastPkts" },
206 { 4, 0x98, "RxMulticastPkts" },
207 { 4, 0x9c, "RxBroadcastPkts" },
208 { 4, 0xa0, "RxSAChanges" },
209 { 4, 0xa4, "RxFragments" },
210 { 4, 0xa8, "RxJumboPkt" },
211 { 4, 0xac, "RxSymblErr" },
212 { 4, 0xb0, "InRangeErrCount" },
213 { 4, 0xb4, "OutRangeErrCount" },
214 { 4, 0xb8, "EEELpiEvent" },
215 { 4, 0xbc, "EEELpiDuration" },
216 { 4, 0xc0, "RxDiscard" },
217 { 4, 0xc8, "TxQPKTQ6" },
218 { 4, 0xcc, "TxQPKTQ7" },
219 { 4, 0xd0, "TxPkts64Octets" },
220 { 4, 0xd4, "TxPkts65to127Octets" },
221 { 4, 0xd8, "TxPkts128to255Octets" },
222 { 4, 0xdc, "TxPkts256to511Ocets" },
223 { 4, 0xe0, "TxPkts512to1023Ocets" },
224 { 4, 0xe4, "TxPkts1024toMaxPktOcets" },
225};
226
227#define B53_MIBS_58XX_SIZE ARRAY_SIZE(b53_mibs_58xx)
228
229static int b53_do_vlan_op(struct b53_device *dev, u8 op)
230{
231 unsigned int i;
232
233 b53_write8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], VTA_START_CMD | op);
234
235 for (i = 0; i < 10; i++) {
236 u8 vta;
237
238 b53_read8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], &vta);
239 if (!(vta & VTA_START_CMD))
240 return 0;
241
242 usleep_range(100, 200);
243 }
244
245 return -EIO;
246}
247
248static void b53_set_vlan_entry(struct b53_device *dev, u16 vid,
249 struct b53_vlan *vlan)
250{
251 if (is5325(dev)) {
252 u32 entry = 0;
253
254 if (vlan->members) {
255 entry = ((vlan->untag & VA_UNTAG_MASK_25) <<
256 VA_UNTAG_S_25) | vlan->members;
257 if (dev->core_rev >= 3)
258 entry |= VA_VALID_25_R4 | vid << VA_VID_HIGH_S;
259 else
260 entry |= VA_VALID_25;
261 }
262
263 b53_write32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, entry);
264 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
265 VTA_RW_STATE_WR | VTA_RW_OP_EN);
266 } else if (is5365(dev)) {
267 u16 entry = 0;
268
269 if (vlan->members)
270 entry = ((vlan->untag & VA_UNTAG_MASK_65) <<
271 VA_UNTAG_S_65) | vlan->members | VA_VALID_65;
272
273 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, entry);
274 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
275 VTA_RW_STATE_WR | VTA_RW_OP_EN);
276 } else {
277 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
278 b53_write32(dev, B53_ARLIO_PAGE, dev->vta_regs[2],
279 (vlan->untag << VTE_UNTAG_S) | vlan->members);
280
281 b53_do_vlan_op(dev, VTA_CMD_WRITE);
282 }
283
284 dev_dbg(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n",
285 vid, vlan->members, vlan->untag);
286}
287
288static void b53_get_vlan_entry(struct b53_device *dev, u16 vid,
289 struct b53_vlan *vlan)
290{
291 if (is5325(dev)) {
292 u32 entry = 0;
293
294 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
295 VTA_RW_STATE_RD | VTA_RW_OP_EN);
296 b53_read32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, &entry);
297
298 if (dev->core_rev >= 3)
299 vlan->valid = !!(entry & VA_VALID_25_R4);
300 else
301 vlan->valid = !!(entry & VA_VALID_25);
302 vlan->members = entry & VA_MEMBER_MASK;
303 vlan->untag = (entry >> VA_UNTAG_S_25) & VA_UNTAG_MASK_25;
304
305 } else if (is5365(dev)) {
306 u16 entry = 0;
307
308 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
309 VTA_RW_STATE_WR | VTA_RW_OP_EN);
310 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, &entry);
311
312 vlan->valid = !!(entry & VA_VALID_65);
313 vlan->members = entry & VA_MEMBER_MASK;
314 vlan->untag = (entry >> VA_UNTAG_S_65) & VA_UNTAG_MASK_65;
315 } else {
316 u32 entry = 0;
317
318 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
319 b53_do_vlan_op(dev, VTA_CMD_READ);
320 b53_read32(dev, B53_ARLIO_PAGE, dev->vta_regs[2], &entry);
321 vlan->members = entry & VTE_MEMBERS;
322 vlan->untag = (entry >> VTE_UNTAG_S) & VTE_MEMBERS;
323 vlan->valid = true;
324 }
325}
326
327static void b53_set_forwarding(struct b53_device *dev, int enable)
328{
329 u8 mgmt;
330
331 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
332
333 if (enable)
334 mgmt |= SM_SW_FWD_EN;
335 else
336 mgmt &= ~SM_SW_FWD_EN;
337
338 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
339
340 /* Include IMP port in dumb forwarding mode
341 */
342 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
343 mgmt |= B53_MII_DUMB_FWDG_EN;
344 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
345
346 /* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
347 * frames should be flooded or not.
348 */
349 b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
350 mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN;
351 b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
352}
353
354static void b53_enable_vlan(struct b53_device *dev, bool enable,
355 bool enable_filtering)
356{
357 u8 mgmt, vc0, vc1, vc4 = 0, vc5;
358
359 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
360 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, &vc0);
361 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, &vc1);
362
363 if (is5325(dev) || is5365(dev)) {
364 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
365 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, &vc5);
366 } else if (is63xx(dev)) {
367 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, &vc4);
368 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, &vc5);
369 } else {
370 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, &vc4);
371 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
372 }
373
374 mgmt &= ~SM_SW_FWD_MODE;
375
376 if (enable) {
377 vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
378 vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
379 vc4 &= ~VC4_ING_VID_CHECK_MASK;
380 if (enable_filtering) {
381 vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
382 vc5 |= VC5_DROP_VTABLE_MISS;
383 } else {
384 vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
385 vc5 &= ~VC5_DROP_VTABLE_MISS;
386 }
387
388 if (is5325(dev))
389 vc0 &= ~VC0_RESERVED_1;
390
391 if (is5325(dev) || is5365(dev))
392 vc1 |= VC1_RX_MCST_TAG_EN;
393
394 } else {
395 vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);
396 vc1 &= ~(VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN);
397 vc4 &= ~VC4_ING_VID_CHECK_MASK;
398 vc5 &= ~VC5_DROP_VTABLE_MISS;
399
400 if (is5325(dev) || is5365(dev))
401 vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
402 else
403 vc4 |= VC4_ING_VID_VIO_TO_IMP << VC4_ING_VID_CHECK_S;
404
405 if (is5325(dev) || is5365(dev))
406 vc1 &= ~VC1_RX_MCST_TAG_EN;
407 }
408
409 if (!is5325(dev) && !is5365(dev))
410 vc5 &= ~VC5_VID_FFF_EN;
411
412 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, vc0);
413 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, vc1);
414
415 if (is5325(dev) || is5365(dev)) {
416 /* enable the high 8 bit vid check on 5325 */
417 if (is5325(dev) && enable)
418 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3,
419 VC3_HIGH_8BIT_EN);
420 else
421 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
422
423 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, vc4);
424 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, vc5);
425 } else if (is63xx(dev)) {
426 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3_63XX, 0);
427 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, vc4);
428 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, vc5);
429 } else {
430 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
431 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, vc4);
432 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, vc5);
433 }
434
435 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
436
437 dev->vlan_enabled = enable;
438}
439
440static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
441{
442 u32 port_mask = 0;
443 u16 max_size = JMS_MIN_SIZE;
444
445 if (is5325(dev) || is5365(dev))
446 return -EINVAL;
447
448 if (enable) {
449 port_mask = dev->enabled_ports;
450 max_size = JMS_MAX_SIZE;
451 if (allow_10_100)
452 port_mask |= JPM_10_100_JUMBO_EN;
453 }
454
455 b53_write32(dev, B53_JUMBO_PAGE, dev->jumbo_pm_reg, port_mask);
456 return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size);
457}
458
459static int b53_flush_arl(struct b53_device *dev, u8 mask)
460{
461 unsigned int i;
462
463 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
464 FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
465
466 for (i = 0; i < 10; i++) {
467 u8 fast_age_ctrl;
468
469 b53_read8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
470 &fast_age_ctrl);
471
472 if (!(fast_age_ctrl & FAST_AGE_DONE))
473 goto out;
474
475 msleep(1);
476 }
477
478 return -ETIMEDOUT;
479out:
480 /* Only age dynamic entries (default behavior) */
481 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, FAST_AGE_DYNAMIC);
482 return 0;
483}
484
485static int b53_fast_age_port(struct b53_device *dev, int port)
486{
487 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port);
488
489 return b53_flush_arl(dev, FAST_AGE_PORT);
490}
491
492static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
493{
494 b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid);
495
496 return b53_flush_arl(dev, FAST_AGE_VLAN);
497}
498
499void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
500{
501 struct b53_device *dev = ds->priv;
502 unsigned int i;
503 u16 pvlan;
504
505 /* Enable the IMP port to be in the same VLAN as the other ports
506 * on a per-port basis such that we only have Port i and IMP in
507 * the same VLAN.
508 */
509 b53_for_each_port(dev, i) {
510 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &pvlan);
511 pvlan |= BIT(cpu_port);
512 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), pvlan);
513 }
514}
515EXPORT_SYMBOL(b53_imp_vlan_setup);
516
517int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
518{
519 struct b53_device *dev = ds->priv;
520 unsigned int cpu_port;
521 int ret = 0;
522 u16 pvlan;
523
524 if (!dsa_is_user_port(ds, port))
525 return 0;
526
527 cpu_port = ds->ports[port].cpu_dp->index;
528
529 if (dev->ops->irq_enable)
530 ret = dev->ops->irq_enable(dev, port);
531 if (ret)
532 return ret;
533
534 /* Clear the Rx and Tx disable bits and set to no spanning tree */
535 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0);
536
537 /* Set this port, and only this one to be in the default VLAN,
538 * if member of a bridge, restore its membership prior to
539 * bringing down this port.
540 */
541 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
542 pvlan &= ~0x1ff;
543 pvlan |= BIT(port);
544 pvlan |= dev->ports[port].vlan_ctl_mask;
545 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
546
547 b53_imp_vlan_setup(ds, cpu_port);
548
549 /* If EEE was enabled, restore it */
550 if (dev->ports[port].eee.eee_enabled)
551 b53_eee_enable_set(ds, port, true);
552
553 return 0;
554}
555EXPORT_SYMBOL(b53_enable_port);
556
557void b53_disable_port(struct dsa_switch *ds, int port)
558{
559 struct b53_device *dev = ds->priv;
560 u8 reg;
561
562 /* Disable Tx/Rx for the port */
563 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), ®);
564 reg |= PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE;
565 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
566
567 if (dev->ops->irq_disable)
568 dev->ops->irq_disable(dev, port);
569}
570EXPORT_SYMBOL(b53_disable_port);
571
572void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)
573{
574 bool tag_en = !(ds->ops->get_tag_protocol(ds, port) ==
575 DSA_TAG_PROTO_NONE);
576 struct b53_device *dev = ds->priv;
577 u8 hdr_ctl, val;
578 u16 reg;
579
580 /* Resolve which bit controls the Broadcom tag */
581 switch (port) {
582 case 8:
583 val = BRCM_HDR_P8_EN;
584 break;
585 case 7:
586 val = BRCM_HDR_P7_EN;
587 break;
588 case 5:
589 val = BRCM_HDR_P5_EN;
590 break;
591 default:
592 val = 0;
593 break;
594 }
595
596 /* Enable Broadcom tags for IMP port */
597 b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl);
598 if (tag_en)
599 hdr_ctl |= val;
600 else
601 hdr_ctl &= ~val;
602 b53_write8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, hdr_ctl);
603
604 /* Registers below are only accessible on newer devices */
605 if (!is58xx(dev))
606 return;
607
608 /* Enable reception Broadcom tag for CPU TX (switch RX) to
609 * allow us to tag outgoing frames
610 */
611 b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, ®);
612 if (tag_en)
613 reg &= ~BIT(port);
614 else
615 reg |= BIT(port);
616 b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, reg);
617
618 /* Enable transmission of Broadcom tags from the switch (CPU RX) to
619 * allow delivering frames to the per-port net_devices
620 */
621 b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, ®);
622 if (tag_en)
623 reg &= ~BIT(port);
624 else
625 reg |= BIT(port);
626 b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, reg);
627}
628EXPORT_SYMBOL(b53_brcm_hdr_setup);
629
630static void b53_enable_cpu_port(struct b53_device *dev, int port)
631{
632 u8 port_ctrl;
633
634 /* BCM5325 CPU port is at 8 */
635 if ((is5325(dev) || is5365(dev)) && port == B53_CPU_PORT_25)
636 port = B53_CPU_PORT;
637
638 port_ctrl = PORT_CTRL_RX_BCST_EN |
639 PORT_CTRL_RX_MCST_EN |
640 PORT_CTRL_RX_UCST_EN;
641 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), port_ctrl);
642
643 b53_brcm_hdr_setup(dev->ds, port);
644}
645
646static void b53_enable_mib(struct b53_device *dev)
647{
648 u8 gc;
649
650 b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
651 gc &= ~(GC_RESET_MIB | GC_MIB_AC_EN);
652 b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
653}
654
655static u16 b53_default_pvid(struct b53_device *dev)
656{
657 if (is5325(dev) || is5365(dev))
658 return 1;
659 else
660 return 0;
661}
662
663int b53_configure_vlan(struct dsa_switch *ds)
664{
665 struct b53_device *dev = ds->priv;
666 struct b53_vlan vl = { 0 };
667 int i, def_vid;
668
669 def_vid = b53_default_pvid(dev);
670
671 /* clear all vlan entries */
672 if (is5325(dev) || is5365(dev)) {
673 for (i = def_vid; i < dev->num_vlans; i++)
674 b53_set_vlan_entry(dev, i, &vl);
675 } else {
676 b53_do_vlan_op(dev, VTA_CMD_CLEAR);
677 }
678
679 b53_enable_vlan(dev, false, ds->vlan_filtering);
680
681 b53_for_each_port(dev, i)
682 b53_write16(dev, B53_VLAN_PAGE,
683 B53_VLAN_PORT_DEF_TAG(i), def_vid);
684
685 if (!is5325(dev) && !is5365(dev))
686 b53_set_jumbo(dev, dev->enable_jumbo, false);
687
688 return 0;
689}
690EXPORT_SYMBOL(b53_configure_vlan);
691
692static void b53_switch_reset_gpio(struct b53_device *dev)
693{
694 int gpio = dev->reset_gpio;
695
696 if (gpio < 0)
697 return;
698
699 /* Reset sequence: RESET low(50ms)->high(20ms)
700 */
701 gpio_set_value(gpio, 0);
702 mdelay(50);
703
704 gpio_set_value(gpio, 1);
705 mdelay(20);
706
707 dev->current_page = 0xff;
708}
709
710static int b53_switch_reset(struct b53_device *dev)
711{
712 unsigned int timeout = 1000;
713 u8 mgmt, reg;
714
715 b53_switch_reset_gpio(dev);
716
717 if (is539x(dev)) {
718 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x83);
719 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00);
720 }
721
722 /* This is specific to 58xx devices here, do not use is58xx() which
723 * covers the larger Starfigther 2 family, including 7445/7278 which
724 * still use this driver as a library and need to perform the reset
725 * earlier.
726 */
727 if (dev->chip_id == BCM58XX_DEVICE_ID ||
728 dev->chip_id == BCM583XX_DEVICE_ID) {
729 b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, ®);
730 reg |= SW_RST | EN_SW_RST | EN_CH_RST;
731 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, reg);
732
733 do {
734 b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, ®);
735 if (!(reg & SW_RST))
736 break;
737
738 usleep_range(1000, 2000);
739 } while (timeout-- > 0);
740
741 if (timeout == 0)
742 return -ETIMEDOUT;
743 }
744
745 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
746
747 if (!(mgmt & SM_SW_FWD_EN)) {
748 mgmt &= ~SM_SW_FWD_MODE;
749 mgmt |= SM_SW_FWD_EN;
750
751 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
752 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
753
754 if (!(mgmt & SM_SW_FWD_EN)) {
755 dev_err(dev->dev, "Failed to enable switch!\n");
756 return -EINVAL;
757 }
758 }
759
760 b53_enable_mib(dev);
761
762 return b53_flush_arl(dev, FAST_AGE_STATIC);
763}
764
765static int b53_phy_read16(struct dsa_switch *ds, int addr, int reg)
766{
767 struct b53_device *priv = ds->priv;
768 u16 value = 0;
769 int ret;
770
771 if (priv->ops->phy_read16)
772 ret = priv->ops->phy_read16(priv, addr, reg, &value);
773 else
774 ret = b53_read16(priv, B53_PORT_MII_PAGE(addr),
775 reg * 2, &value);
776
777 return ret ? ret : value;
778}
779
780static int b53_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val)
781{
782 struct b53_device *priv = ds->priv;
783
784 if (priv->ops->phy_write16)
785 return priv->ops->phy_write16(priv, addr, reg, val);
786
787 return b53_write16(priv, B53_PORT_MII_PAGE(addr), reg * 2, val);
788}
789
790static int b53_reset_switch(struct b53_device *priv)
791{
792 /* reset vlans */
793 priv->enable_jumbo = false;
794
795 memset(priv->vlans, 0, sizeof(*priv->vlans) * priv->num_vlans);
796 memset(priv->ports, 0, sizeof(*priv->ports) * priv->num_ports);
797
798 priv->serdes_lane = B53_INVALID_LANE;
799
800 return b53_switch_reset(priv);
801}
802
803static int b53_apply_config(struct b53_device *priv)
804{
805 /* disable switching */
806 b53_set_forwarding(priv, 0);
807
808 b53_configure_vlan(priv->ds);
809
810 /* enable switching */
811 b53_set_forwarding(priv, 1);
812
813 return 0;
814}
815
816static void b53_reset_mib(struct b53_device *priv)
817{
818 u8 gc;
819
820 b53_read8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
821
822 b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc | GC_RESET_MIB);
823 msleep(1);
824 b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc & ~GC_RESET_MIB);
825 msleep(1);
826}
827
828static const struct b53_mib_desc *b53_get_mib(struct b53_device *dev)
829{
830 if (is5365(dev))
831 return b53_mibs_65;
832 else if (is63xx(dev))
833 return b53_mibs_63xx;
834 else if (is58xx(dev))
835 return b53_mibs_58xx;
836 else
837 return b53_mibs;
838}
839
840static unsigned int b53_get_mib_size(struct b53_device *dev)
841{
842 if (is5365(dev))
843 return B53_MIBS_65_SIZE;
844 else if (is63xx(dev))
845 return B53_MIBS_63XX_SIZE;
846 else if (is58xx(dev))
847 return B53_MIBS_58XX_SIZE;
848 else
849 return B53_MIBS_SIZE;
850}
851
852static struct phy_device *b53_get_phy_device(struct dsa_switch *ds, int port)
853{
854 /* These ports typically do not have built-in PHYs */
855 switch (port) {
856 case B53_CPU_PORT_25:
857 case 7:
858 case B53_CPU_PORT:
859 return NULL;
860 }
861
862 return mdiobus_get_phy(ds->slave_mii_bus, port);
863}
864
865void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset,
866 uint8_t *data)
867{
868 struct b53_device *dev = ds->priv;
869 const struct b53_mib_desc *mibs = b53_get_mib(dev);
870 unsigned int mib_size = b53_get_mib_size(dev);
871 struct phy_device *phydev;
872 unsigned int i;
873
874 if (stringset == ETH_SS_STATS) {
875 for (i = 0; i < mib_size; i++)
876 strlcpy(data + i * ETH_GSTRING_LEN,
877 mibs[i].name, ETH_GSTRING_LEN);
878 } else if (stringset == ETH_SS_PHY_STATS) {
879 phydev = b53_get_phy_device(ds, port);
880 if (!phydev)
881 return;
882
883 phy_ethtool_get_strings(phydev, data);
884 }
885}
886EXPORT_SYMBOL(b53_get_strings);
887
888void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data)
889{
890 struct b53_device *dev = ds->priv;
891 const struct b53_mib_desc *mibs = b53_get_mib(dev);
892 unsigned int mib_size = b53_get_mib_size(dev);
893 const struct b53_mib_desc *s;
894 unsigned int i;
895 u64 val = 0;
896
897 if (is5365(dev) && port == 5)
898 port = 8;
899
900 mutex_lock(&dev->stats_mutex);
901
902 for (i = 0; i < mib_size; i++) {
903 s = &mibs[i];
904
905 if (s->size == 8) {
906 b53_read64(dev, B53_MIB_PAGE(port), s->offset, &val);
907 } else {
908 u32 val32;
909
910 b53_read32(dev, B53_MIB_PAGE(port), s->offset,
911 &val32);
912 val = val32;
913 }
914 data[i] = (u64)val;
915 }
916
917 mutex_unlock(&dev->stats_mutex);
918}
919EXPORT_SYMBOL(b53_get_ethtool_stats);
920
921void b53_get_ethtool_phy_stats(struct dsa_switch *ds, int port, uint64_t *data)
922{
923 struct phy_device *phydev;
924
925 phydev = b53_get_phy_device(ds, port);
926 if (!phydev)
927 return;
928
929 phy_ethtool_get_stats(phydev, NULL, data);
930}
931EXPORT_SYMBOL(b53_get_ethtool_phy_stats);
932
933int b53_get_sset_count(struct dsa_switch *ds, int port, int sset)
934{
935 struct b53_device *dev = ds->priv;
936 struct phy_device *phydev;
937
938 if (sset == ETH_SS_STATS) {
939 return b53_get_mib_size(dev);
940 } else if (sset == ETH_SS_PHY_STATS) {
941 phydev = b53_get_phy_device(ds, port);
942 if (!phydev)
943 return 0;
944
945 return phy_ethtool_get_sset_count(phydev);
946 }
947
948 return 0;
949}
950EXPORT_SYMBOL(b53_get_sset_count);
951
952static int b53_setup(struct dsa_switch *ds)
953{
954 struct b53_device *dev = ds->priv;
955 unsigned int port;
956 int ret;
957
958 ret = b53_reset_switch(dev);
959 if (ret) {
960 dev_err(ds->dev, "failed to reset switch\n");
961 return ret;
962 }
963
964 b53_reset_mib(dev);
965
966 ret = b53_apply_config(dev);
967 if (ret)
968 dev_err(ds->dev, "failed to apply configuration\n");
969
970 /* Configure IMP/CPU port, disable all other ports. Enabled
971 * ports will be configured with .port_enable
972 */
973 for (port = 0; port < dev->num_ports; port++) {
974 if (dsa_is_cpu_port(ds, port))
975 b53_enable_cpu_port(dev, port);
976 else
977 b53_disable_port(ds, port);
978 }
979
980 /* Let DSA handle the case were multiple bridges span the same switch
981 * device and different VLAN awareness settings are requested, which
982 * would be breaking filtering semantics for any of the other bridge
983 * devices. (not hardware supported)
984 */
985 ds->vlan_filtering_is_global = true;
986
987 return ret;
988}
989
990static void b53_force_link(struct b53_device *dev, int port, int link)
991{
992 u8 reg, val, off;
993
994 /* Override the port settings */
995 if (port == dev->cpu_port) {
996 off = B53_PORT_OVERRIDE_CTRL;
997 val = PORT_OVERRIDE_EN;
998 } else {
999 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
1000 val = GMII_PO_EN;
1001 }
1002
1003 b53_read8(dev, B53_CTRL_PAGE, off, ®);
1004 reg |= val;
1005 if (link)
1006 reg |= PORT_OVERRIDE_LINK;
1007 else
1008 reg &= ~PORT_OVERRIDE_LINK;
1009 b53_write8(dev, B53_CTRL_PAGE, off, reg);
1010}
1011
1012static void b53_force_port_config(struct b53_device *dev, int port,
1013 int speed, int duplex, int pause)
1014{
1015 u8 reg, val, off;
1016
1017 /* Override the port settings */
1018 if (port == dev->cpu_port) {
1019 off = B53_PORT_OVERRIDE_CTRL;
1020 val = PORT_OVERRIDE_EN;
1021 } else {
1022 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
1023 val = GMII_PO_EN;
1024 }
1025
1026 b53_read8(dev, B53_CTRL_PAGE, off, ®);
1027 reg |= val;
1028 if (duplex == DUPLEX_FULL)
1029 reg |= PORT_OVERRIDE_FULL_DUPLEX;
1030 else
1031 reg &= ~PORT_OVERRIDE_FULL_DUPLEX;
1032
1033 switch (speed) {
1034 case 2000:
1035 reg |= PORT_OVERRIDE_SPEED_2000M;
1036 /* fallthrough */
1037 case SPEED_1000:
1038 reg |= PORT_OVERRIDE_SPEED_1000M;
1039 break;
1040 case SPEED_100:
1041 reg |= PORT_OVERRIDE_SPEED_100M;
1042 break;
1043 case SPEED_10:
1044 reg |= PORT_OVERRIDE_SPEED_10M;
1045 break;
1046 default:
1047 dev_err(dev->dev, "unknown speed: %d\n", speed);
1048 return;
1049 }
1050
1051 if (pause & MLO_PAUSE_RX)
1052 reg |= PORT_OVERRIDE_RX_FLOW;
1053 if (pause & MLO_PAUSE_TX)
1054 reg |= PORT_OVERRIDE_TX_FLOW;
1055
1056 b53_write8(dev, B53_CTRL_PAGE, off, reg);
1057}
1058
1059static void b53_adjust_link(struct dsa_switch *ds, int port,
1060 struct phy_device *phydev)
1061{
1062 struct b53_device *dev = ds->priv;
1063 struct ethtool_eee *p = &dev->ports[port].eee;
1064 u8 rgmii_ctrl = 0, reg = 0, off;
1065 int pause = 0;
1066
1067 if (!phy_is_pseudo_fixed_link(phydev))
1068 return;
1069
1070 /* Enable flow control on BCM5301x's CPU port */
1071 if (is5301x(dev) && port == dev->cpu_port)
1072 pause = MLO_PAUSE_TXRX_MASK;
1073
1074 if (phydev->pause) {
1075 if (phydev->asym_pause)
1076 pause |= MLO_PAUSE_TX;
1077 pause |= MLO_PAUSE_RX;
1078 }
1079
1080 b53_force_port_config(dev, port, phydev->speed, phydev->duplex, pause);
1081 b53_force_link(dev, port, phydev->link);
1082
1083 if (is531x5(dev) && phy_interface_is_rgmii(phydev)) {
1084 if (port == 8)
1085 off = B53_RGMII_CTRL_IMP;
1086 else
1087 off = B53_RGMII_CTRL_P(port);
1088
1089 /* Configure the port RGMII clock delay by DLL disabled and
1090 * tx_clk aligned timing (restoring to reset defaults)
1091 */
1092 b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl);
1093 rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC |
1094 RGMII_CTRL_TIMING_SEL);
1095
1096 /* PHY_INTERFACE_MODE_RGMII_TXID means TX internal delay, make
1097 * sure that we enable the port TX clock internal delay to
1098 * account for this internal delay that is inserted, otherwise
1099 * the switch won't be able to receive correctly.
1100 *
1101 * PHY_INTERFACE_MODE_RGMII means that we are not introducing
1102 * any delay neither on transmission nor reception, so the
1103 * BCM53125 must also be configured accordingly to account for
1104 * the lack of delay and introduce
1105 *
1106 * The BCM53125 switch has its RX clock and TX clock control
1107 * swapped, hence the reason why we modify the TX clock path in
1108 * the "RGMII" case
1109 */
1110 if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
1111 rgmii_ctrl |= RGMII_CTRL_DLL_TXC;
1112 if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
1113 rgmii_ctrl |= RGMII_CTRL_DLL_TXC | RGMII_CTRL_DLL_RXC;
1114 rgmii_ctrl |= RGMII_CTRL_TIMING_SEL;
1115 b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
1116
1117 dev_info(ds->dev, "Configured port %d for %s\n", port,
1118 phy_modes(phydev->interface));
1119 }
1120
1121 /* configure MII port if necessary */
1122 if (is5325(dev)) {
1123 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1124 ®);
1125
1126 /* reverse mii needs to be enabled */
1127 if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1128 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1129 reg | PORT_OVERRIDE_RV_MII_25);
1130 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1131 ®);
1132
1133 if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1134 dev_err(ds->dev,
1135 "Failed to enable reverse MII mode\n");
1136 return;
1137 }
1138 }
1139 } else if (is5301x(dev)) {
1140 if (port != dev->cpu_port) {
1141 b53_force_port_config(dev, dev->cpu_port, 2000,
1142 DUPLEX_FULL, MLO_PAUSE_TXRX_MASK);
1143 b53_force_link(dev, dev->cpu_port, 1);
1144 }
1145 }
1146
1147 /* Re-negotiate EEE if it was enabled already */
1148 p->eee_enabled = b53_eee_init(ds, port, phydev);
1149}
1150
1151void b53_port_event(struct dsa_switch *ds, int port)
1152{
1153 struct b53_device *dev = ds->priv;
1154 bool link;
1155 u16 sts;
1156
1157 b53_read16(dev, B53_STAT_PAGE, B53_LINK_STAT, &sts);
1158 link = !!(sts & BIT(port));
1159 dsa_port_phylink_mac_change(ds, port, link);
1160}
1161EXPORT_SYMBOL(b53_port_event);
1162
1163void b53_phylink_validate(struct dsa_switch *ds, int port,
1164 unsigned long *supported,
1165 struct phylink_link_state *state)
1166{
1167 struct b53_device *dev = ds->priv;
1168 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
1169
1170 if (dev->ops->serdes_phylink_validate)
1171 dev->ops->serdes_phylink_validate(dev, port, mask, state);
1172
1173 /* Allow all the expected bits */
1174 phylink_set(mask, Autoneg);
1175 phylink_set_port_modes(mask);
1176 phylink_set(mask, Pause);
1177 phylink_set(mask, Asym_Pause);
1178
1179 /* With the exclusion of 5325/5365, MII, Reverse MII and 802.3z, we
1180 * support Gigabit, including Half duplex.
1181 */
1182 if (state->interface != PHY_INTERFACE_MODE_MII &&
1183 state->interface != PHY_INTERFACE_MODE_REVMII &&
1184 !phy_interface_mode_is_8023z(state->interface) &&
1185 !(is5325(dev) || is5365(dev))) {
1186 phylink_set(mask, 1000baseT_Full);
1187 phylink_set(mask, 1000baseT_Half);
1188 }
1189
1190 if (!phy_interface_mode_is_8023z(state->interface)) {
1191 phylink_set(mask, 10baseT_Half);
1192 phylink_set(mask, 10baseT_Full);
1193 phylink_set(mask, 100baseT_Half);
1194 phylink_set(mask, 100baseT_Full);
1195 }
1196
1197 bitmap_and(supported, supported, mask,
1198 __ETHTOOL_LINK_MODE_MASK_NBITS);
1199 bitmap_and(state->advertising, state->advertising, mask,
1200 __ETHTOOL_LINK_MODE_MASK_NBITS);
1201
1202 phylink_helper_basex_speed(state);
1203}
1204EXPORT_SYMBOL(b53_phylink_validate);
1205
1206int b53_phylink_mac_link_state(struct dsa_switch *ds, int port,
1207 struct phylink_link_state *state)
1208{
1209 struct b53_device *dev = ds->priv;
1210 int ret = -EOPNOTSUPP;
1211
1212 if ((phy_interface_mode_is_8023z(state->interface) ||
1213 state->interface == PHY_INTERFACE_MODE_SGMII) &&
1214 dev->ops->serdes_link_state)
1215 ret = dev->ops->serdes_link_state(dev, port, state);
1216
1217 return ret;
1218}
1219EXPORT_SYMBOL(b53_phylink_mac_link_state);
1220
1221void b53_phylink_mac_config(struct dsa_switch *ds, int port,
1222 unsigned int mode,
1223 const struct phylink_link_state *state)
1224{
1225 struct b53_device *dev = ds->priv;
1226
1227 if (mode == MLO_AN_PHY)
1228 return;
1229
1230 if (mode == MLO_AN_FIXED) {
1231 b53_force_port_config(dev, port, state->speed,
1232 state->duplex, state->pause);
1233 return;
1234 }
1235
1236 if ((phy_interface_mode_is_8023z(state->interface) ||
1237 state->interface == PHY_INTERFACE_MODE_SGMII) &&
1238 dev->ops->serdes_config)
1239 dev->ops->serdes_config(dev, port, mode, state);
1240}
1241EXPORT_SYMBOL(b53_phylink_mac_config);
1242
1243void b53_phylink_mac_an_restart(struct dsa_switch *ds, int port)
1244{
1245 struct b53_device *dev = ds->priv;
1246
1247 if (dev->ops->serdes_an_restart)
1248 dev->ops->serdes_an_restart(dev, port);
1249}
1250EXPORT_SYMBOL(b53_phylink_mac_an_restart);
1251
1252void b53_phylink_mac_link_down(struct dsa_switch *ds, int port,
1253 unsigned int mode,
1254 phy_interface_t interface)
1255{
1256 struct b53_device *dev = ds->priv;
1257
1258 if (mode == MLO_AN_PHY)
1259 return;
1260
1261 if (mode == MLO_AN_FIXED) {
1262 b53_force_link(dev, port, false);
1263 return;
1264 }
1265
1266 if (phy_interface_mode_is_8023z(interface) &&
1267 dev->ops->serdes_link_set)
1268 dev->ops->serdes_link_set(dev, port, mode, interface, false);
1269}
1270EXPORT_SYMBOL(b53_phylink_mac_link_down);
1271
1272void b53_phylink_mac_link_up(struct dsa_switch *ds, int port,
1273 unsigned int mode,
1274 phy_interface_t interface,
1275 struct phy_device *phydev)
1276{
1277 struct b53_device *dev = ds->priv;
1278
1279 if (mode == MLO_AN_PHY)
1280 return;
1281
1282 if (mode == MLO_AN_FIXED) {
1283 b53_force_link(dev, port, true);
1284 return;
1285 }
1286
1287 if (phy_interface_mode_is_8023z(interface) &&
1288 dev->ops->serdes_link_set)
1289 dev->ops->serdes_link_set(dev, port, mode, interface, true);
1290}
1291EXPORT_SYMBOL(b53_phylink_mac_link_up);
1292
1293int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering)
1294{
1295 struct b53_device *dev = ds->priv;
1296 u16 pvid, new_pvid;
1297
1298 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
1299 new_pvid = pvid;
1300 if (!vlan_filtering) {
1301 /* Filtering is currently enabled, use the default PVID since
1302 * the bridge does not expect tagging anymore
1303 */
1304 dev->ports[port].pvid = pvid;
1305 new_pvid = b53_default_pvid(dev);
1306 } else {
1307 /* Filtering is currently disabled, restore the previous PVID */
1308 new_pvid = dev->ports[port].pvid;
1309 }
1310
1311 if (pvid != new_pvid)
1312 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
1313 new_pvid);
1314
1315 b53_enable_vlan(dev, dev->vlan_enabled, vlan_filtering);
1316
1317 return 0;
1318}
1319EXPORT_SYMBOL(b53_vlan_filtering);
1320
1321int b53_vlan_prepare(struct dsa_switch *ds, int port,
1322 const struct switchdev_obj_port_vlan *vlan)
1323{
1324 struct b53_device *dev = ds->priv;
1325
1326 if ((is5325(dev) || is5365(dev)) && vlan->vid_begin == 0)
1327 return -EOPNOTSUPP;
1328
1329 if (vlan->vid_end > dev->num_vlans)
1330 return -ERANGE;
1331
1332 b53_enable_vlan(dev, true, ds->vlan_filtering);
1333
1334 return 0;
1335}
1336EXPORT_SYMBOL(b53_vlan_prepare);
1337
1338void b53_vlan_add(struct dsa_switch *ds, int port,
1339 const struct switchdev_obj_port_vlan *vlan)
1340{
1341 struct b53_device *dev = ds->priv;
1342 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1343 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1344 struct b53_vlan *vl;
1345 u16 vid;
1346
1347 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
1348 vl = &dev->vlans[vid];
1349
1350 b53_get_vlan_entry(dev, vid, vl);
1351
1352 vl->members |= BIT(port);
1353 if (untagged && !dsa_is_cpu_port(ds, port))
1354 vl->untag |= BIT(port);
1355 else
1356 vl->untag &= ~BIT(port);
1357
1358 b53_set_vlan_entry(dev, vid, vl);
1359 b53_fast_age_vlan(dev, vid);
1360 }
1361
1362 if (pvid && !dsa_is_cpu_port(ds, port)) {
1363 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
1364 vlan->vid_end);
1365 b53_fast_age_vlan(dev, vid);
1366 }
1367}
1368EXPORT_SYMBOL(b53_vlan_add);
1369
1370int b53_vlan_del(struct dsa_switch *ds, int port,
1371 const struct switchdev_obj_port_vlan *vlan)
1372{
1373 struct b53_device *dev = ds->priv;
1374 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1375 struct b53_vlan *vl;
1376 u16 vid;
1377 u16 pvid;
1378
1379 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
1380
1381 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
1382 vl = &dev->vlans[vid];
1383
1384 b53_get_vlan_entry(dev, vid, vl);
1385
1386 vl->members &= ~BIT(port);
1387
1388 if (pvid == vid)
1389 pvid = b53_default_pvid(dev);
1390
1391 if (untagged && !dsa_is_cpu_port(ds, port))
1392 vl->untag &= ~(BIT(port));
1393
1394 b53_set_vlan_entry(dev, vid, vl);
1395 b53_fast_age_vlan(dev, vid);
1396 }
1397
1398 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), pvid);
1399 b53_fast_age_vlan(dev, pvid);
1400
1401 return 0;
1402}
1403EXPORT_SYMBOL(b53_vlan_del);
1404
1405/* Address Resolution Logic routines */
1406static int b53_arl_op_wait(struct b53_device *dev)
1407{
1408 unsigned int timeout = 10;
1409 u8 reg;
1410
1411 do {
1412 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, ®);
1413 if (!(reg & ARLTBL_START_DONE))
1414 return 0;
1415
1416 usleep_range(1000, 2000);
1417 } while (timeout--);
1418
1419 dev_warn(dev->dev, "timeout waiting for ARL to finish: 0x%02x\n", reg);
1420
1421 return -ETIMEDOUT;
1422}
1423
1424static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
1425{
1426 u8 reg;
1427
1428 if (op > ARLTBL_RW)
1429 return -EINVAL;
1430
1431 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, ®);
1432 reg |= ARLTBL_START_DONE;
1433 if (op)
1434 reg |= ARLTBL_RW;
1435 else
1436 reg &= ~ARLTBL_RW;
1437 b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, reg);
1438
1439 return b53_arl_op_wait(dev);
1440}
1441
1442static int b53_arl_read(struct b53_device *dev, u64 mac,
1443 u16 vid, struct b53_arl_entry *ent, u8 *idx,
1444 bool is_valid)
1445{
1446 unsigned int i;
1447 int ret;
1448
1449 ret = b53_arl_op_wait(dev);
1450 if (ret)
1451 return ret;
1452
1453 /* Read the bins */
1454 for (i = 0; i < dev->num_arl_entries; i++) {
1455 u64 mac_vid;
1456 u32 fwd_entry;
1457
1458 b53_read64(dev, B53_ARLIO_PAGE,
1459 B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
1460 b53_read32(dev, B53_ARLIO_PAGE,
1461 B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
1462 b53_arl_to_entry(ent, mac_vid, fwd_entry);
1463
1464 if (!(fwd_entry & ARLTBL_VALID))
1465 continue;
1466 if ((mac_vid & ARLTBL_MAC_MASK) != mac)
1467 continue;
1468 *idx = i;
1469 }
1470
1471 return -ENOENT;
1472}
1473
1474static int b53_arl_op(struct b53_device *dev, int op, int port,
1475 const unsigned char *addr, u16 vid, bool is_valid)
1476{
1477 struct b53_arl_entry ent;
1478 u32 fwd_entry;
1479 u64 mac, mac_vid = 0;
1480 u8 idx = 0;
1481 int ret;
1482
1483 /* Convert the array into a 64-bit MAC */
1484 mac = ether_addr_to_u64(addr);
1485
1486 /* Perform a read for the given MAC and VID */
1487 b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
1488 b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
1489
1490 /* Issue a read operation for this MAC */
1491 ret = b53_arl_rw_op(dev, 1);
1492 if (ret)
1493 return ret;
1494
1495 ret = b53_arl_read(dev, mac, vid, &ent, &idx, is_valid);
1496 /* If this is a read, just finish now */
1497 if (op)
1498 return ret;
1499
1500 /* We could not find a matching MAC, so reset to a new entry */
1501 if (ret) {
1502 fwd_entry = 0;
1503 idx = 1;
1504 }
1505
1506 memset(&ent, 0, sizeof(ent));
1507 ent.port = port;
1508 ent.is_valid = is_valid;
1509 ent.vid = vid;
1510 ent.is_static = true;
1511 memcpy(ent.mac, addr, ETH_ALEN);
1512 b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
1513
1514 b53_write64(dev, B53_ARLIO_PAGE,
1515 B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
1516 b53_write32(dev, B53_ARLIO_PAGE,
1517 B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
1518
1519 return b53_arl_rw_op(dev, 0);
1520}
1521
1522int b53_fdb_add(struct dsa_switch *ds, int port,
1523 const unsigned char *addr, u16 vid)
1524{
1525 struct b53_device *priv = ds->priv;
1526
1527 /* 5325 and 5365 require some more massaging, but could
1528 * be supported eventually
1529 */
1530 if (is5325(priv) || is5365(priv))
1531 return -EOPNOTSUPP;
1532
1533 return b53_arl_op(priv, 0, port, addr, vid, true);
1534}
1535EXPORT_SYMBOL(b53_fdb_add);
1536
1537int b53_fdb_del(struct dsa_switch *ds, int port,
1538 const unsigned char *addr, u16 vid)
1539{
1540 struct b53_device *priv = ds->priv;
1541
1542 return b53_arl_op(priv, 0, port, addr, vid, false);
1543}
1544EXPORT_SYMBOL(b53_fdb_del);
1545
1546static int b53_arl_search_wait(struct b53_device *dev)
1547{
1548 unsigned int timeout = 1000;
1549 u8 reg;
1550
1551 do {
1552 b53_read8(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, ®);
1553 if (!(reg & ARL_SRCH_STDN))
1554 return 0;
1555
1556 if (reg & ARL_SRCH_VLID)
1557 return 0;
1558
1559 usleep_range(1000, 2000);
1560 } while (timeout--);
1561
1562 return -ETIMEDOUT;
1563}
1564
1565static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
1566 struct b53_arl_entry *ent)
1567{
1568 u64 mac_vid;
1569 u32 fwd_entry;
1570
1571 b53_read64(dev, B53_ARLIO_PAGE,
1572 B53_ARL_SRCH_RSTL_MACVID(idx), &mac_vid);
1573 b53_read32(dev, B53_ARLIO_PAGE,
1574 B53_ARL_SRCH_RSTL(idx), &fwd_entry);
1575 b53_arl_to_entry(ent, mac_vid, fwd_entry);
1576}
1577
1578static int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
1579 dsa_fdb_dump_cb_t *cb, void *data)
1580{
1581 if (!ent->is_valid)
1582 return 0;
1583
1584 if (port != ent->port)
1585 return 0;
1586
1587 return cb(ent->mac, ent->vid, ent->is_static, data);
1588}
1589
1590int b53_fdb_dump(struct dsa_switch *ds, int port,
1591 dsa_fdb_dump_cb_t *cb, void *data)
1592{
1593 struct b53_device *priv = ds->priv;
1594 struct b53_arl_entry results[2];
1595 unsigned int count = 0;
1596 int ret;
1597 u8 reg;
1598
1599 /* Start search operation */
1600 reg = ARL_SRCH_STDN;
1601 b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg);
1602
1603 do {
1604 ret = b53_arl_search_wait(priv);
1605 if (ret)
1606 return ret;
1607
1608 b53_arl_search_rd(priv, 0, &results[0]);
1609 ret = b53_fdb_copy(port, &results[0], cb, data);
1610 if (ret)
1611 return ret;
1612
1613 if (priv->num_arl_entries > 2) {
1614 b53_arl_search_rd(priv, 1, &results[1]);
1615 ret = b53_fdb_copy(port, &results[1], cb, data);
1616 if (ret)
1617 return ret;
1618
1619 if (!results[0].is_valid && !results[1].is_valid)
1620 break;
1621 }
1622
1623 } while (count++ < 1024);
1624
1625 return 0;
1626}
1627EXPORT_SYMBOL(b53_fdb_dump);
1628
1629int b53_br_join(struct dsa_switch *ds, int port, struct net_device *br)
1630{
1631 struct b53_device *dev = ds->priv;
1632 s8 cpu_port = ds->ports[port].cpu_dp->index;
1633 u16 pvlan, reg;
1634 unsigned int i;
1635
1636 /* Make this port leave the all VLANs join since we will have proper
1637 * VLAN entries from now on
1638 */
1639 if (is58xx(dev)) {
1640 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, ®);
1641 reg &= ~BIT(port);
1642 if ((reg & BIT(cpu_port)) == BIT(cpu_port))
1643 reg &= ~BIT(cpu_port);
1644 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1645 }
1646
1647 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1648
1649 b53_for_each_port(dev, i) {
1650 if (dsa_to_port(ds, i)->bridge_dev != br)
1651 continue;
1652
1653 /* Add this local port to the remote port VLAN control
1654 * membership and update the remote port bitmask
1655 */
1656 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), ®);
1657 reg |= BIT(port);
1658 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1659 dev->ports[i].vlan_ctl_mask = reg;
1660
1661 pvlan |= BIT(i);
1662 }
1663
1664 /* Configure the local port VLAN control membership to include
1665 * remote ports and update the local port bitmask
1666 */
1667 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1668 dev->ports[port].vlan_ctl_mask = pvlan;
1669
1670 return 0;
1671}
1672EXPORT_SYMBOL(b53_br_join);
1673
1674void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *br)
1675{
1676 struct b53_device *dev = ds->priv;
1677 struct b53_vlan *vl = &dev->vlans[0];
1678 s8 cpu_port = ds->ports[port].cpu_dp->index;
1679 unsigned int i;
1680 u16 pvlan, reg, pvid;
1681
1682 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
1683
1684 b53_for_each_port(dev, i) {
1685 /* Don't touch the remaining ports */
1686 if (dsa_to_port(ds, i)->bridge_dev != br)
1687 continue;
1688
1689 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), ®);
1690 reg &= ~BIT(port);
1691 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
1692 dev->ports[port].vlan_ctl_mask = reg;
1693
1694 /* Prevent self removal to preserve isolation */
1695 if (port != i)
1696 pvlan &= ~BIT(i);
1697 }
1698
1699 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
1700 dev->ports[port].vlan_ctl_mask = pvlan;
1701
1702 pvid = b53_default_pvid(dev);
1703
1704 /* Make this port join all VLANs without VLAN entries */
1705 if (is58xx(dev)) {
1706 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, ®);
1707 reg |= BIT(port);
1708 if (!(reg & BIT(cpu_port)))
1709 reg |= BIT(cpu_port);
1710 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
1711 } else {
1712 b53_get_vlan_entry(dev, pvid, vl);
1713 vl->members |= BIT(port) | BIT(cpu_port);
1714 vl->untag |= BIT(port) | BIT(cpu_port);
1715 b53_set_vlan_entry(dev, pvid, vl);
1716 }
1717}
1718EXPORT_SYMBOL(b53_br_leave);
1719
1720void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state)
1721{
1722 struct b53_device *dev = ds->priv;
1723 u8 hw_state;
1724 u8 reg;
1725
1726 switch (state) {
1727 case BR_STATE_DISABLED:
1728 hw_state = PORT_CTRL_DIS_STATE;
1729 break;
1730 case BR_STATE_LISTENING:
1731 hw_state = PORT_CTRL_LISTEN_STATE;
1732 break;
1733 case BR_STATE_LEARNING:
1734 hw_state = PORT_CTRL_LEARN_STATE;
1735 break;
1736 case BR_STATE_FORWARDING:
1737 hw_state = PORT_CTRL_FWD_STATE;
1738 break;
1739 case BR_STATE_BLOCKING:
1740 hw_state = PORT_CTRL_BLOCK_STATE;
1741 break;
1742 default:
1743 dev_err(ds->dev, "invalid STP state: %d\n", state);
1744 return;
1745 }
1746
1747 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), ®);
1748 reg &= ~PORT_CTRL_STP_STATE_MASK;
1749 reg |= hw_state;
1750 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
1751}
1752EXPORT_SYMBOL(b53_br_set_stp_state);
1753
1754void b53_br_fast_age(struct dsa_switch *ds, int port)
1755{
1756 struct b53_device *dev = ds->priv;
1757
1758 if (b53_fast_age_port(dev, port))
1759 dev_err(ds->dev, "fast ageing failed\n");
1760}
1761EXPORT_SYMBOL(b53_br_fast_age);
1762
1763int b53_br_egress_floods(struct dsa_switch *ds, int port,
1764 bool unicast, bool multicast)
1765{
1766 struct b53_device *dev = ds->priv;
1767 u16 uc, mc;
1768
1769 b53_read16(dev, B53_CTRL_PAGE, B53_UC_FWD_EN, &uc);
1770 if (unicast)
1771 uc |= BIT(port);
1772 else
1773 uc &= ~BIT(port);
1774 b53_write16(dev, B53_CTRL_PAGE, B53_UC_FWD_EN, uc);
1775
1776 b53_read16(dev, B53_CTRL_PAGE, B53_MC_FWD_EN, &mc);
1777 if (multicast)
1778 mc |= BIT(port);
1779 else
1780 mc &= ~BIT(port);
1781 b53_write16(dev, B53_CTRL_PAGE, B53_MC_FWD_EN, mc);
1782
1783 return 0;
1784
1785}
1786EXPORT_SYMBOL(b53_br_egress_floods);
1787
1788static bool b53_possible_cpu_port(struct dsa_switch *ds, int port)
1789{
1790 /* Broadcom switches will accept enabling Broadcom tags on the
1791 * following ports: 5, 7 and 8, any other port is not supported
1792 */
1793 switch (port) {
1794 case B53_CPU_PORT_25:
1795 case 7:
1796 case B53_CPU_PORT:
1797 return true;
1798 }
1799
1800 return false;
1801}
1802
1803static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port)
1804{
1805 bool ret = b53_possible_cpu_port(ds, port);
1806
1807 if (!ret)
1808 dev_warn(ds->dev, "Port %d is not Broadcom tag capable\n",
1809 port);
1810 return ret;
1811}
1812
1813enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port)
1814{
1815 struct b53_device *dev = ds->priv;
1816
1817 /* Older models (5325, 5365) support a different tag format that we do
1818 * not support in net/dsa/tag_brcm.c yet. 539x and 531x5 require managed
1819 * mode to be turned on which means we need to specifically manage ARL
1820 * misses on multicast addresses (TBD).
1821 */
1822 if (is5325(dev) || is5365(dev) || is539x(dev) || is531x5(dev) ||
1823 !b53_can_enable_brcm_tags(ds, port))
1824 return DSA_TAG_PROTO_NONE;
1825
1826 /* Broadcom BCM58xx chips have a flow accelerator on Port 8
1827 * which requires us to use the prepended Broadcom tag type
1828 */
1829 if (dev->chip_id == BCM58XX_DEVICE_ID && port == B53_CPU_PORT)
1830 return DSA_TAG_PROTO_BRCM_PREPEND;
1831
1832 return DSA_TAG_PROTO_BRCM;
1833}
1834EXPORT_SYMBOL(b53_get_tag_protocol);
1835
1836int b53_mirror_add(struct dsa_switch *ds, int port,
1837 struct dsa_mall_mirror_tc_entry *mirror, bool ingress)
1838{
1839 struct b53_device *dev = ds->priv;
1840 u16 reg, loc;
1841
1842 if (ingress)
1843 loc = B53_IG_MIR_CTL;
1844 else
1845 loc = B53_EG_MIR_CTL;
1846
1847 b53_read16(dev, B53_MGMT_PAGE, loc, ®);
1848 reg |= BIT(port);
1849 b53_write16(dev, B53_MGMT_PAGE, loc, reg);
1850
1851 b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, ®);
1852 reg &= ~CAP_PORT_MASK;
1853 reg |= mirror->to_local_port;
1854 reg |= MIRROR_EN;
1855 b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
1856
1857 return 0;
1858}
1859EXPORT_SYMBOL(b53_mirror_add);
1860
1861void b53_mirror_del(struct dsa_switch *ds, int port,
1862 struct dsa_mall_mirror_tc_entry *mirror)
1863{
1864 struct b53_device *dev = ds->priv;
1865 bool loc_disable = false, other_loc_disable = false;
1866 u16 reg, loc;
1867
1868 if (mirror->ingress)
1869 loc = B53_IG_MIR_CTL;
1870 else
1871 loc = B53_EG_MIR_CTL;
1872
1873 /* Update the desired ingress/egress register */
1874 b53_read16(dev, B53_MGMT_PAGE, loc, ®);
1875 reg &= ~BIT(port);
1876 if (!(reg & MIRROR_MASK))
1877 loc_disable = true;
1878 b53_write16(dev, B53_MGMT_PAGE, loc, reg);
1879
1880 /* Now look at the other one to know if we can disable mirroring
1881 * entirely
1882 */
1883 if (mirror->ingress)
1884 b53_read16(dev, B53_MGMT_PAGE, B53_EG_MIR_CTL, ®);
1885 else
1886 b53_read16(dev, B53_MGMT_PAGE, B53_IG_MIR_CTL, ®);
1887 if (!(reg & MIRROR_MASK))
1888 other_loc_disable = true;
1889
1890 b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, ®);
1891 /* Both no longer have ports, let's disable mirroring */
1892 if (loc_disable && other_loc_disable) {
1893 reg &= ~MIRROR_EN;
1894 reg &= ~mirror->to_local_port;
1895 }
1896 b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
1897}
1898EXPORT_SYMBOL(b53_mirror_del);
1899
1900void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
1901{
1902 struct b53_device *dev = ds->priv;
1903 u16 reg;
1904
1905 b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, ®);
1906 if (enable)
1907 reg |= BIT(port);
1908 else
1909 reg &= ~BIT(port);
1910 b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg);
1911}
1912EXPORT_SYMBOL(b53_eee_enable_set);
1913
1914
1915/* Returns 0 if EEE was not enabled, or 1 otherwise
1916 */
1917int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy)
1918{
1919 int ret;
1920
1921 ret = phy_init_eee(phy, 0);
1922 if (ret)
1923 return 0;
1924
1925 b53_eee_enable_set(ds, port, true);
1926
1927 return 1;
1928}
1929EXPORT_SYMBOL(b53_eee_init);
1930
1931int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
1932{
1933 struct b53_device *dev = ds->priv;
1934 struct ethtool_eee *p = &dev->ports[port].eee;
1935 u16 reg;
1936
1937 if (is5325(dev) || is5365(dev))
1938 return -EOPNOTSUPP;
1939
1940 b53_read16(dev, B53_EEE_PAGE, B53_EEE_LPI_INDICATE, ®);
1941 e->eee_enabled = p->eee_enabled;
1942 e->eee_active = !!(reg & BIT(port));
1943
1944 return 0;
1945}
1946EXPORT_SYMBOL(b53_get_mac_eee);
1947
1948int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
1949{
1950 struct b53_device *dev = ds->priv;
1951 struct ethtool_eee *p = &dev->ports[port].eee;
1952
1953 if (is5325(dev) || is5365(dev))
1954 return -EOPNOTSUPP;
1955
1956 p->eee_enabled = e->eee_enabled;
1957 b53_eee_enable_set(ds, port, e->eee_enabled);
1958
1959 return 0;
1960}
1961EXPORT_SYMBOL(b53_set_mac_eee);
1962
1963static const struct dsa_switch_ops b53_switch_ops = {
1964 .get_tag_protocol = b53_get_tag_protocol,
1965 .setup = b53_setup,
1966 .get_strings = b53_get_strings,
1967 .get_ethtool_stats = b53_get_ethtool_stats,
1968 .get_sset_count = b53_get_sset_count,
1969 .get_ethtool_phy_stats = b53_get_ethtool_phy_stats,
1970 .phy_read = b53_phy_read16,
1971 .phy_write = b53_phy_write16,
1972 .adjust_link = b53_adjust_link,
1973 .phylink_validate = b53_phylink_validate,
1974 .phylink_mac_link_state = b53_phylink_mac_link_state,
1975 .phylink_mac_config = b53_phylink_mac_config,
1976 .phylink_mac_an_restart = b53_phylink_mac_an_restart,
1977 .phylink_mac_link_down = b53_phylink_mac_link_down,
1978 .phylink_mac_link_up = b53_phylink_mac_link_up,
1979 .port_enable = b53_enable_port,
1980 .port_disable = b53_disable_port,
1981 .get_mac_eee = b53_get_mac_eee,
1982 .set_mac_eee = b53_set_mac_eee,
1983 .port_bridge_join = b53_br_join,
1984 .port_bridge_leave = b53_br_leave,
1985 .port_stp_state_set = b53_br_set_stp_state,
1986 .port_fast_age = b53_br_fast_age,
1987 .port_egress_floods = b53_br_egress_floods,
1988 .port_vlan_filtering = b53_vlan_filtering,
1989 .port_vlan_prepare = b53_vlan_prepare,
1990 .port_vlan_add = b53_vlan_add,
1991 .port_vlan_del = b53_vlan_del,
1992 .port_fdb_dump = b53_fdb_dump,
1993 .port_fdb_add = b53_fdb_add,
1994 .port_fdb_del = b53_fdb_del,
1995 .port_mirror_add = b53_mirror_add,
1996 .port_mirror_del = b53_mirror_del,
1997};
1998
1999struct b53_chip_data {
2000 u32 chip_id;
2001 const char *dev_name;
2002 u16 vlans;
2003 u16 enabled_ports;
2004 u8 cpu_port;
2005 u8 vta_regs[3];
2006 u8 arl_entries;
2007 u8 duplex_reg;
2008 u8 jumbo_pm_reg;
2009 u8 jumbo_size_reg;
2010};
2011
2012#define B53_VTA_REGS \
2013 { B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY }
2014#define B53_VTA_REGS_9798 \
2015 { B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 }
2016#define B53_VTA_REGS_63XX \
2017 { B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX }
2018
2019static const struct b53_chip_data b53_switch_chips[] = {
2020 {
2021 .chip_id = BCM5325_DEVICE_ID,
2022 .dev_name = "BCM5325",
2023 .vlans = 16,
2024 .enabled_ports = 0x1f,
2025 .arl_entries = 2,
2026 .cpu_port = B53_CPU_PORT_25,
2027 .duplex_reg = B53_DUPLEX_STAT_FE,
2028 },
2029 {
2030 .chip_id = BCM5365_DEVICE_ID,
2031 .dev_name = "BCM5365",
2032 .vlans = 256,
2033 .enabled_ports = 0x1f,
2034 .arl_entries = 2,
2035 .cpu_port = B53_CPU_PORT_25,
2036 .duplex_reg = B53_DUPLEX_STAT_FE,
2037 },
2038 {
2039 .chip_id = BCM5389_DEVICE_ID,
2040 .dev_name = "BCM5389",
2041 .vlans = 4096,
2042 .enabled_ports = 0x1f,
2043 .arl_entries = 4,
2044 .cpu_port = B53_CPU_PORT,
2045 .vta_regs = B53_VTA_REGS,
2046 .duplex_reg = B53_DUPLEX_STAT_GE,
2047 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2048 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2049 },
2050 {
2051 .chip_id = BCM5395_DEVICE_ID,
2052 .dev_name = "BCM5395",
2053 .vlans = 4096,
2054 .enabled_ports = 0x1f,
2055 .arl_entries = 4,
2056 .cpu_port = B53_CPU_PORT,
2057 .vta_regs = B53_VTA_REGS,
2058 .duplex_reg = B53_DUPLEX_STAT_GE,
2059 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2060 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2061 },
2062 {
2063 .chip_id = BCM5397_DEVICE_ID,
2064 .dev_name = "BCM5397",
2065 .vlans = 4096,
2066 .enabled_ports = 0x1f,
2067 .arl_entries = 4,
2068 .cpu_port = B53_CPU_PORT,
2069 .vta_regs = B53_VTA_REGS_9798,
2070 .duplex_reg = B53_DUPLEX_STAT_GE,
2071 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2072 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2073 },
2074 {
2075 .chip_id = BCM5398_DEVICE_ID,
2076 .dev_name = "BCM5398",
2077 .vlans = 4096,
2078 .enabled_ports = 0x7f,
2079 .arl_entries = 4,
2080 .cpu_port = B53_CPU_PORT,
2081 .vta_regs = B53_VTA_REGS_9798,
2082 .duplex_reg = B53_DUPLEX_STAT_GE,
2083 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2084 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2085 },
2086 {
2087 .chip_id = BCM53115_DEVICE_ID,
2088 .dev_name = "BCM53115",
2089 .vlans = 4096,
2090 .enabled_ports = 0x1f,
2091 .arl_entries = 4,
2092 .vta_regs = B53_VTA_REGS,
2093 .cpu_port = B53_CPU_PORT,
2094 .duplex_reg = B53_DUPLEX_STAT_GE,
2095 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2096 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2097 },
2098 {
2099 .chip_id = BCM53125_DEVICE_ID,
2100 .dev_name = "BCM53125",
2101 .vlans = 4096,
2102 .enabled_ports = 0xff,
2103 .arl_entries = 4,
2104 .cpu_port = B53_CPU_PORT,
2105 .vta_regs = B53_VTA_REGS,
2106 .duplex_reg = B53_DUPLEX_STAT_GE,
2107 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2108 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2109 },
2110 {
2111 .chip_id = BCM53128_DEVICE_ID,
2112 .dev_name = "BCM53128",
2113 .vlans = 4096,
2114 .enabled_ports = 0x1ff,
2115 .arl_entries = 4,
2116 .cpu_port = B53_CPU_PORT,
2117 .vta_regs = B53_VTA_REGS,
2118 .duplex_reg = B53_DUPLEX_STAT_GE,
2119 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2120 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2121 },
2122 {
2123 .chip_id = BCM63XX_DEVICE_ID,
2124 .dev_name = "BCM63xx",
2125 .vlans = 4096,
2126 .enabled_ports = 0, /* pdata must provide them */
2127 .arl_entries = 4,
2128 .cpu_port = B53_CPU_PORT,
2129 .vta_regs = B53_VTA_REGS_63XX,
2130 .duplex_reg = B53_DUPLEX_STAT_63XX,
2131 .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
2132 .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
2133 },
2134 {
2135 .chip_id = BCM53010_DEVICE_ID,
2136 .dev_name = "BCM53010",
2137 .vlans = 4096,
2138 .enabled_ports = 0x1f,
2139 .arl_entries = 4,
2140 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2141 .vta_regs = B53_VTA_REGS,
2142 .duplex_reg = B53_DUPLEX_STAT_GE,
2143 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2144 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2145 },
2146 {
2147 .chip_id = BCM53011_DEVICE_ID,
2148 .dev_name = "BCM53011",
2149 .vlans = 4096,
2150 .enabled_ports = 0x1bf,
2151 .arl_entries = 4,
2152 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2153 .vta_regs = B53_VTA_REGS,
2154 .duplex_reg = B53_DUPLEX_STAT_GE,
2155 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2156 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2157 },
2158 {
2159 .chip_id = BCM53012_DEVICE_ID,
2160 .dev_name = "BCM53012",
2161 .vlans = 4096,
2162 .enabled_ports = 0x1bf,
2163 .arl_entries = 4,
2164 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2165 .vta_regs = B53_VTA_REGS,
2166 .duplex_reg = B53_DUPLEX_STAT_GE,
2167 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2168 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2169 },
2170 {
2171 .chip_id = BCM53018_DEVICE_ID,
2172 .dev_name = "BCM53018",
2173 .vlans = 4096,
2174 .enabled_ports = 0x1f,
2175 .arl_entries = 4,
2176 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2177 .vta_regs = B53_VTA_REGS,
2178 .duplex_reg = B53_DUPLEX_STAT_GE,
2179 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2180 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2181 },
2182 {
2183 .chip_id = BCM53019_DEVICE_ID,
2184 .dev_name = "BCM53019",
2185 .vlans = 4096,
2186 .enabled_ports = 0x1f,
2187 .arl_entries = 4,
2188 .cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
2189 .vta_regs = B53_VTA_REGS,
2190 .duplex_reg = B53_DUPLEX_STAT_GE,
2191 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2192 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2193 },
2194 {
2195 .chip_id = BCM58XX_DEVICE_ID,
2196 .dev_name = "BCM585xx/586xx/88312",
2197 .vlans = 4096,
2198 .enabled_ports = 0x1ff,
2199 .arl_entries = 4,
2200 .cpu_port = B53_CPU_PORT,
2201 .vta_regs = B53_VTA_REGS,
2202 .duplex_reg = B53_DUPLEX_STAT_GE,
2203 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2204 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2205 },
2206 {
2207 .chip_id = BCM583XX_DEVICE_ID,
2208 .dev_name = "BCM583xx/11360",
2209 .vlans = 4096,
2210 .enabled_ports = 0x103,
2211 .arl_entries = 4,
2212 .cpu_port = B53_CPU_PORT,
2213 .vta_regs = B53_VTA_REGS,
2214 .duplex_reg = B53_DUPLEX_STAT_GE,
2215 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2216 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2217 },
2218 {
2219 .chip_id = BCM7445_DEVICE_ID,
2220 .dev_name = "BCM7445",
2221 .vlans = 4096,
2222 .enabled_ports = 0x1ff,
2223 .arl_entries = 4,
2224 .cpu_port = B53_CPU_PORT,
2225 .vta_regs = B53_VTA_REGS,
2226 .duplex_reg = B53_DUPLEX_STAT_GE,
2227 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2228 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2229 },
2230 {
2231 .chip_id = BCM7278_DEVICE_ID,
2232 .dev_name = "BCM7278",
2233 .vlans = 4096,
2234 .enabled_ports = 0x1ff,
2235 .arl_entries= 4,
2236 .cpu_port = B53_CPU_PORT,
2237 .vta_regs = B53_VTA_REGS,
2238 .duplex_reg = B53_DUPLEX_STAT_GE,
2239 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2240 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2241 },
2242};
2243
2244static int b53_switch_init(struct b53_device *dev)
2245{
2246 unsigned int i;
2247 int ret;
2248
2249 for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) {
2250 const struct b53_chip_data *chip = &b53_switch_chips[i];
2251
2252 if (chip->chip_id == dev->chip_id) {
2253 if (!dev->enabled_ports)
2254 dev->enabled_ports = chip->enabled_ports;
2255 dev->name = chip->dev_name;
2256 dev->duplex_reg = chip->duplex_reg;
2257 dev->vta_regs[0] = chip->vta_regs[0];
2258 dev->vta_regs[1] = chip->vta_regs[1];
2259 dev->vta_regs[2] = chip->vta_regs[2];
2260 dev->jumbo_pm_reg = chip->jumbo_pm_reg;
2261 dev->cpu_port = chip->cpu_port;
2262 dev->num_vlans = chip->vlans;
2263 dev->num_arl_entries = chip->arl_entries;
2264 break;
2265 }
2266 }
2267
2268 /* check which BCM5325x version we have */
2269 if (is5325(dev)) {
2270 u8 vc4;
2271
2272 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
2273
2274 /* check reserved bits */
2275 switch (vc4 & 3) {
2276 case 1:
2277 /* BCM5325E */
2278 break;
2279 case 3:
2280 /* BCM5325F - do not use port 4 */
2281 dev->enabled_ports &= ~BIT(4);
2282 break;
2283 default:
2284/* On the BCM47XX SoCs this is the supported internal switch.*/
2285#ifndef CONFIG_BCM47XX
2286 /* BCM5325M */
2287 return -EINVAL;
2288#else
2289 break;
2290#endif
2291 }
2292 } else if (dev->chip_id == BCM53115_DEVICE_ID) {
2293 u64 strap_value;
2294
2295 b53_read48(dev, B53_STAT_PAGE, B53_STRAP_VALUE, &strap_value);
2296 /* use second IMP port if GMII is enabled */
2297 if (strap_value & SV_GMII_CTRL_115)
2298 dev->cpu_port = 5;
2299 }
2300
2301 /* cpu port is always last */
2302 dev->num_ports = dev->cpu_port + 1;
2303 dev->enabled_ports |= BIT(dev->cpu_port);
2304
2305 /* Include non standard CPU port built-in PHYs to be probed */
2306 if (is539x(dev) || is531x5(dev)) {
2307 for (i = 0; i < dev->num_ports; i++) {
2308 if (!(dev->ds->phys_mii_mask & BIT(i)) &&
2309 !b53_possible_cpu_port(dev->ds, i))
2310 dev->ds->phys_mii_mask |= BIT(i);
2311 }
2312 }
2313
2314 dev->ports = devm_kcalloc(dev->dev,
2315 dev->num_ports, sizeof(struct b53_port),
2316 GFP_KERNEL);
2317 if (!dev->ports)
2318 return -ENOMEM;
2319
2320 dev->vlans = devm_kcalloc(dev->dev,
2321 dev->num_vlans, sizeof(struct b53_vlan),
2322 GFP_KERNEL);
2323 if (!dev->vlans)
2324 return -ENOMEM;
2325
2326 dev->reset_gpio = b53_switch_get_reset_gpio(dev);
2327 if (dev->reset_gpio >= 0) {
2328 ret = devm_gpio_request_one(dev->dev, dev->reset_gpio,
2329 GPIOF_OUT_INIT_HIGH, "robo_reset");
2330 if (ret)
2331 return ret;
2332 }
2333
2334 return 0;
2335}
2336
2337struct b53_device *b53_switch_alloc(struct device *base,
2338 const struct b53_io_ops *ops,
2339 void *priv)
2340{
2341 struct dsa_switch *ds;
2342 struct b53_device *dev;
2343
2344 ds = dsa_switch_alloc(base, DSA_MAX_PORTS);
2345 if (!ds)
2346 return NULL;
2347
2348 dev = devm_kzalloc(base, sizeof(*dev), GFP_KERNEL);
2349 if (!dev)
2350 return NULL;
2351
2352 ds->priv = dev;
2353 dev->dev = base;
2354
2355 dev->ds = ds;
2356 dev->priv = priv;
2357 dev->ops = ops;
2358 ds->ops = &b53_switch_ops;
2359 mutex_init(&dev->reg_mutex);
2360 mutex_init(&dev->stats_mutex);
2361
2362 return dev;
2363}
2364EXPORT_SYMBOL(b53_switch_alloc);
2365
2366int b53_switch_detect(struct b53_device *dev)
2367{
2368 u32 id32;
2369 u16 tmp;
2370 u8 id8;
2371 int ret;
2372
2373 ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8);
2374 if (ret)
2375 return ret;
2376
2377 switch (id8) {
2378 case 0:
2379 /* BCM5325 and BCM5365 do not have this register so reads
2380 * return 0. But the read operation did succeed, so assume this
2381 * is one of them.
2382 *
2383 * Next check if we can write to the 5325's VTA register; for
2384 * 5365 it is read only.
2385 */
2386 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
2387 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
2388
2389 if (tmp == 0xf)
2390 dev->chip_id = BCM5325_DEVICE_ID;
2391 else
2392 dev->chip_id = BCM5365_DEVICE_ID;
2393 break;
2394 case BCM5389_DEVICE_ID:
2395 case BCM5395_DEVICE_ID:
2396 case BCM5397_DEVICE_ID:
2397 case BCM5398_DEVICE_ID:
2398 dev->chip_id = id8;
2399 break;
2400 default:
2401 ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32);
2402 if (ret)
2403 return ret;
2404
2405 switch (id32) {
2406 case BCM53115_DEVICE_ID:
2407 case BCM53125_DEVICE_ID:
2408 case BCM53128_DEVICE_ID:
2409 case BCM53010_DEVICE_ID:
2410 case BCM53011_DEVICE_ID:
2411 case BCM53012_DEVICE_ID:
2412 case BCM53018_DEVICE_ID:
2413 case BCM53019_DEVICE_ID:
2414 dev->chip_id = id32;
2415 break;
2416 default:
2417 pr_err("unsupported switch detected (BCM53%02x/BCM%x)\n",
2418 id8, id32);
2419 return -ENODEV;
2420 }
2421 }
2422
2423 if (dev->chip_id == BCM5325_DEVICE_ID)
2424 return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
2425 &dev->core_rev);
2426 else
2427 return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
2428 &dev->core_rev);
2429}
2430EXPORT_SYMBOL(b53_switch_detect);
2431
2432int b53_switch_register(struct b53_device *dev)
2433{
2434 int ret;
2435
2436 if (dev->pdata) {
2437 dev->chip_id = dev->pdata->chip_id;
2438 dev->enabled_ports = dev->pdata->enabled_ports;
2439 }
2440
2441 if (!dev->chip_id && b53_switch_detect(dev))
2442 return -EINVAL;
2443
2444 ret = b53_switch_init(dev);
2445 if (ret)
2446 return ret;
2447
2448 pr_info("found switch: %s, rev %i\n", dev->name, dev->core_rev);
2449
2450 return dsa_register_switch(dev->ds);
2451}
2452EXPORT_SYMBOL(b53_switch_register);
2453
2454MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
2455MODULE_DESCRIPTION("B53 switch library");
2456MODULE_LICENSE("Dual BSD/GPL");