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 #include <linux/delay.h>
21 #include <linux/export.h>
22 #include <linux/gpio.h>
23 #include <linux/kernel.h>
24 #include <linux/math.h>
25 #include <linux/minmax.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 <linux/if_vlan.h>
33 #include <net/dsa.h>
34
35 #include "b53_regs.h"
36 #include "b53_priv.h"
37
38 struct b53_mib_desc {
39 u8 size;
40 u8 offset;
41 const char *name;
42 };
43
44 /* BCM5365 MIB counters */
45 static const struct b53_mib_desc b53_mibs_65[] = {
46 { 8, 0x00, "TxOctets" },
47 { 4, 0x08, "TxDropPkts" },
48 { 4, 0x10, "TxBroadcastPkts" },
49 { 4, 0x14, "TxMulticastPkts" },
50 { 4, 0x18, "TxUnicastPkts" },
51 { 4, 0x1c, "TxCollisions" },
52 { 4, 0x20, "TxSingleCollision" },
53 { 4, 0x24, "TxMultipleCollision" },
54 { 4, 0x28, "TxDeferredTransmit" },
55 { 4, 0x2c, "TxLateCollision" },
56 { 4, 0x30, "TxExcessiveCollision" },
57 { 4, 0x38, "TxPausePkts" },
58 { 8, 0x44, "RxOctets" },
59 { 4, 0x4c, "RxUndersizePkts" },
60 { 4, 0x50, "RxPausePkts" },
61 { 4, 0x54, "Pkts64Octets" },
62 { 4, 0x58, "Pkts65to127Octets" },
63 { 4, 0x5c, "Pkts128to255Octets" },
64 { 4, 0x60, "Pkts256to511Octets" },
65 { 4, 0x64, "Pkts512to1023Octets" },
66 { 4, 0x68, "Pkts1024to1522Octets" },
67 { 4, 0x6c, "RxOversizePkts" },
68 { 4, 0x70, "RxJabbers" },
69 { 4, 0x74, "RxAlignmentErrors" },
70 { 4, 0x78, "RxFCSErrors" },
71 { 8, 0x7c, "RxGoodOctets" },
72 { 4, 0x84, "RxDropPkts" },
73 { 4, 0x88, "RxUnicastPkts" },
74 { 4, 0x8c, "RxMulticastPkts" },
75 { 4, 0x90, "RxBroadcastPkts" },
76 { 4, 0x94, "RxSAChanges" },
77 { 4, 0x98, "RxFragments" },
78 };
79
80 #define B53_MIBS_65_SIZE ARRAY_SIZE(b53_mibs_65)
81
82 /* BCM63xx MIB counters */
83 static const struct b53_mib_desc b53_mibs_63xx[] = {
84 { 8, 0x00, "TxOctets" },
85 { 4, 0x08, "TxDropPkts" },
86 { 4, 0x0c, "TxQoSPkts" },
87 { 4, 0x10, "TxBroadcastPkts" },
88 { 4, 0x14, "TxMulticastPkts" },
89 { 4, 0x18, "TxUnicastPkts" },
90 { 4, 0x1c, "TxCollisions" },
91 { 4, 0x20, "TxSingleCollision" },
92 { 4, 0x24, "TxMultipleCollision" },
93 { 4, 0x28, "TxDeferredTransmit" },
94 { 4, 0x2c, "TxLateCollision" },
95 { 4, 0x30, "TxExcessiveCollision" },
96 { 4, 0x38, "TxPausePkts" },
97 { 8, 0x3c, "TxQoSOctets" },
98 { 8, 0x44, "RxOctets" },
99 { 4, 0x4c, "RxUndersizePkts" },
100 { 4, 0x50, "RxPausePkts" },
101 { 4, 0x54, "Pkts64Octets" },
102 { 4, 0x58, "Pkts65to127Octets" },
103 { 4, 0x5c, "Pkts128to255Octets" },
104 { 4, 0x60, "Pkts256to511Octets" },
105 { 4, 0x64, "Pkts512to1023Octets" },
106 { 4, 0x68, "Pkts1024to1522Octets" },
107 { 4, 0x6c, "RxOversizePkts" },
108 { 4, 0x70, "RxJabbers" },
109 { 4, 0x74, "RxAlignmentErrors" },
110 { 4, 0x78, "RxFCSErrors" },
111 { 8, 0x7c, "RxGoodOctets" },
112 { 4, 0x84, "RxDropPkts" },
113 { 4, 0x88, "RxUnicastPkts" },
114 { 4, 0x8c, "RxMulticastPkts" },
115 { 4, 0x90, "RxBroadcastPkts" },
116 { 4, 0x94, "RxSAChanges" },
117 { 4, 0x98, "RxFragments" },
118 { 4, 0xa0, "RxSymbolErrors" },
119 { 4, 0xa4, "RxQoSPkts" },
120 { 8, 0xa8, "RxQoSOctets" },
121 { 4, 0xb0, "Pkts1523to2047Octets" },
122 { 4, 0xb4, "Pkts2048to4095Octets" },
123 { 4, 0xb8, "Pkts4096to8191Octets" },
124 { 4, 0xbc, "Pkts8192to9728Octets" },
125 { 4, 0xc0, "RxDiscarded" },
126 };
127
128 #define B53_MIBS_63XX_SIZE ARRAY_SIZE(b53_mibs_63xx)
129
130 /* MIB counters */
131 static const struct b53_mib_desc b53_mibs[] = {
132 { 8, 0x00, "TxOctets" },
133 { 4, 0x08, "TxDropPkts" },
134 { 4, 0x10, "TxBroadcastPkts" },
135 { 4, 0x14, "TxMulticastPkts" },
136 { 4, 0x18, "TxUnicastPkts" },
137 { 4, 0x1c, "TxCollisions" },
138 { 4, 0x20, "TxSingleCollision" },
139 { 4, 0x24, "TxMultipleCollision" },
140 { 4, 0x28, "TxDeferredTransmit" },
141 { 4, 0x2c, "TxLateCollision" },
142 { 4, 0x30, "TxExcessiveCollision" },
143 { 4, 0x38, "TxPausePkts" },
144 { 8, 0x50, "RxOctets" },
145 { 4, 0x58, "RxUndersizePkts" },
146 { 4, 0x5c, "RxPausePkts" },
147 { 4, 0x60, "Pkts64Octets" },
148 { 4, 0x64, "Pkts65to127Octets" },
149 { 4, 0x68, "Pkts128to255Octets" },
150 { 4, 0x6c, "Pkts256to511Octets" },
151 { 4, 0x70, "Pkts512to1023Octets" },
152 { 4, 0x74, "Pkts1024to1522Octets" },
153 { 4, 0x78, "RxOversizePkts" },
154 { 4, 0x7c, "RxJabbers" },
155 { 4, 0x80, "RxAlignmentErrors" },
156 { 4, 0x84, "RxFCSErrors" },
157 { 8, 0x88, "RxGoodOctets" },
158 { 4, 0x90, "RxDropPkts" },
159 { 4, 0x94, "RxUnicastPkts" },
160 { 4, 0x98, "RxMulticastPkts" },
161 { 4, 0x9c, "RxBroadcastPkts" },
162 { 4, 0xa0, "RxSAChanges" },
163 { 4, 0xa4, "RxFragments" },
164 { 4, 0xa8, "RxJumboPkts" },
165 { 4, 0xac, "RxSymbolErrors" },
166 { 4, 0xc0, "RxDiscarded" },
167 };
168
169 #define B53_MIBS_SIZE ARRAY_SIZE(b53_mibs)
170
171 static const struct b53_mib_desc b53_mibs_58xx[] = {
172 { 8, 0x00, "TxOctets" },
173 { 4, 0x08, "TxDropPkts" },
174 { 4, 0x0c, "TxQPKTQ0" },
175 { 4, 0x10, "TxBroadcastPkts" },
176 { 4, 0x14, "TxMulticastPkts" },
177 { 4, 0x18, "TxUnicastPKts" },
178 { 4, 0x1c, "TxCollisions" },
179 { 4, 0x20, "TxSingleCollision" },
180 { 4, 0x24, "TxMultipleCollision" },
181 { 4, 0x28, "TxDeferredCollision" },
182 { 4, 0x2c, "TxLateCollision" },
183 { 4, 0x30, "TxExcessiveCollision" },
184 { 4, 0x34, "TxFrameInDisc" },
185 { 4, 0x38, "TxPausePkts" },
186 { 4, 0x3c, "TxQPKTQ1" },
187 { 4, 0x40, "TxQPKTQ2" },
188 { 4, 0x44, "TxQPKTQ3" },
189 { 4, 0x48, "TxQPKTQ4" },
190 { 4, 0x4c, "TxQPKTQ5" },
191 { 8, 0x50, "RxOctets" },
192 { 4, 0x58, "RxUndersizePkts" },
193 { 4, 0x5c, "RxPausePkts" },
194 { 4, 0x60, "RxPkts64Octets" },
195 { 4, 0x64, "RxPkts65to127Octets" },
196 { 4, 0x68, "RxPkts128to255Octets" },
197 { 4, 0x6c, "RxPkts256to511Octets" },
198 { 4, 0x70, "RxPkts512to1023Octets" },
199 { 4, 0x74, "RxPkts1024toMaxPktsOctets" },
200 { 4, 0x78, "RxOversizePkts" },
201 { 4, 0x7c, "RxJabbers" },
202 { 4, 0x80, "RxAlignmentErrors" },
203 { 4, 0x84, "RxFCSErrors" },
204 { 8, 0x88, "RxGoodOctets" },
205 { 4, 0x90, "RxDropPkts" },
206 { 4, 0x94, "RxUnicastPkts" },
207 { 4, 0x98, "RxMulticastPkts" },
208 { 4, 0x9c, "RxBroadcastPkts" },
209 { 4, 0xa0, "RxSAChanges" },
210 { 4, 0xa4, "RxFragments" },
211 { 4, 0xa8, "RxJumboPkt" },
212 { 4, 0xac, "RxSymblErr" },
213 { 4, 0xb0, "InRangeErrCount" },
214 { 4, 0xb4, "OutRangeErrCount" },
215 { 4, 0xb8, "EEELpiEvent" },
216 { 4, 0xbc, "EEELpiDuration" },
217 { 4, 0xc0, "RxDiscard" },
218 { 4, 0xc8, "TxQPKTQ6" },
219 { 4, 0xcc, "TxQPKTQ7" },
220 { 4, 0xd0, "TxPkts64Octets" },
221 { 4, 0xd4, "TxPkts65to127Octets" },
222 { 4, 0xd8, "TxPkts128to255Octets" },
223 { 4, 0xdc, "TxPkts256to511Ocets" },
224 { 4, 0xe0, "TxPkts512to1023Ocets" },
225 { 4, 0xe4, "TxPkts1024toMaxPktOcets" },
226 };
227
228 #define B53_MIBS_58XX_SIZE ARRAY_SIZE(b53_mibs_58xx)
229
230 #define B53_MAX_MTU_25 (1536 - ETH_HLEN - VLAN_HLEN - ETH_FCS_LEN)
231 #define B53_MAX_MTU (9720 - ETH_HLEN - VLAN_HLEN - ETH_FCS_LEN)
232
b53_do_vlan_op(struct b53_device * dev,u8 op)233 static int b53_do_vlan_op(struct b53_device *dev, u8 op)
234 {
235 unsigned int i;
236
237 b53_write8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], VTA_START_CMD | op);
238
239 for (i = 0; i < 10; i++) {
240 u8 vta;
241
242 b53_read8(dev, B53_ARLIO_PAGE, dev->vta_regs[0], &vta);
243 if (!(vta & VTA_START_CMD))
244 return 0;
245
246 usleep_range(100, 200);
247 }
248
249 return -EIO;
250 }
251
b53_set_vlan_entry(struct b53_device * dev,u16 vid,struct b53_vlan * vlan)252 static void b53_set_vlan_entry(struct b53_device *dev, u16 vid,
253 struct b53_vlan *vlan)
254 {
255 if (is5325(dev)) {
256 u32 entry = 0;
257
258 if (vlan->members) {
259 entry = ((vlan->untag & VA_UNTAG_MASK_25) <<
260 VA_UNTAG_S_25) | vlan->members;
261 if (dev->core_rev >= 3)
262 entry |= VA_VALID_25_R4 | vid << VA_VID_HIGH_S;
263 else
264 entry |= VA_VALID_25;
265 }
266
267 b53_write32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, entry);
268 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
269 VTA_RW_STATE_WR | VTA_RW_OP_EN);
270 } else if (is5365(dev)) {
271 u16 entry = 0;
272
273 if (vlan->members)
274 entry = ((vlan->untag & VA_UNTAG_MASK_65) <<
275 VA_UNTAG_S_65) | vlan->members | VA_VALID_65;
276
277 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, entry);
278 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
279 VTA_RW_STATE_WR | VTA_RW_OP_EN);
280 } else {
281 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
282 b53_write32(dev, B53_ARLIO_PAGE, dev->vta_regs[2],
283 (vlan->untag << VTE_UNTAG_S) | vlan->members);
284
285 b53_do_vlan_op(dev, VTA_CMD_WRITE);
286 }
287
288 dev_dbg(dev->ds->dev, "VID: %d, members: 0x%04x, untag: 0x%04x\n",
289 vid, vlan->members, vlan->untag);
290 }
291
b53_get_vlan_entry(struct b53_device * dev,u16 vid,struct b53_vlan * vlan)292 static void b53_get_vlan_entry(struct b53_device *dev, u16 vid,
293 struct b53_vlan *vlan)
294 {
295 if (is5325(dev)) {
296 u32 entry = 0;
297
298 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, vid |
299 VTA_RW_STATE_RD | VTA_RW_OP_EN);
300 b53_read32(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_25, &entry);
301
302 if (dev->core_rev >= 3)
303 vlan->valid = !!(entry & VA_VALID_25_R4);
304 else
305 vlan->valid = !!(entry & VA_VALID_25);
306 vlan->members = entry & VA_MEMBER_MASK;
307 vlan->untag = (entry >> VA_UNTAG_S_25) & VA_UNTAG_MASK_25;
308
309 } else if (is5365(dev)) {
310 u16 entry = 0;
311
312 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_65, vid |
313 VTA_RW_STATE_WR | VTA_RW_OP_EN);
314 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_WRITE_65, &entry);
315
316 vlan->valid = !!(entry & VA_VALID_65);
317 vlan->members = entry & VA_MEMBER_MASK;
318 vlan->untag = (entry >> VA_UNTAG_S_65) & VA_UNTAG_MASK_65;
319 } else {
320 u32 entry = 0;
321
322 b53_write16(dev, B53_ARLIO_PAGE, dev->vta_regs[1], vid);
323 b53_do_vlan_op(dev, VTA_CMD_READ);
324 b53_read32(dev, B53_ARLIO_PAGE, dev->vta_regs[2], &entry);
325 vlan->members = entry & VTE_MEMBERS;
326 vlan->untag = (entry >> VTE_UNTAG_S) & VTE_MEMBERS;
327 vlan->valid = true;
328 }
329 }
330
b53_set_eap_mode(struct b53_device * dev,int port,int mode)331 static void b53_set_eap_mode(struct b53_device *dev, int port, int mode)
332 {
333 u64 eap_conf;
334
335 if (is5325(dev) || is5365(dev) || dev->chip_id == BCM5389_DEVICE_ID)
336 return;
337
338 b53_read64(dev, B53_EAP_PAGE, B53_PORT_EAP_CONF(port), &eap_conf);
339
340 if (is63xx(dev)) {
341 eap_conf &= ~EAP_MODE_MASK_63XX;
342 eap_conf |= (u64)mode << EAP_MODE_SHIFT_63XX;
343 } else {
344 eap_conf &= ~EAP_MODE_MASK;
345 eap_conf |= (u64)mode << EAP_MODE_SHIFT;
346 }
347
348 b53_write64(dev, B53_EAP_PAGE, B53_PORT_EAP_CONF(port), eap_conf);
349 }
350
b53_set_forwarding(struct b53_device * dev,int enable)351 static void b53_set_forwarding(struct b53_device *dev, int enable)
352 {
353 u8 mgmt;
354
355 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
356
357 if (enable)
358 mgmt |= SM_SW_FWD_EN;
359 else
360 mgmt &= ~SM_SW_FWD_EN;
361
362 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
363
364 if (!is5325(dev)) {
365 /* Include IMP port in dumb forwarding mode */
366 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
367 mgmt |= B53_MII_DUMB_FWDG_EN;
368 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
369
370 /* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
371 * frames should be flooded or not.
372 */
373 b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
374 mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN | B53_IPMC_FWD_EN;
375 b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
376 } else {
377 b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
378 mgmt |= B53_IP_MCAST_25;
379 b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
380 }
381 }
382
b53_enable_vlan(struct b53_device * dev,int port,bool enable,bool enable_filtering)383 static void b53_enable_vlan(struct b53_device *dev, int port, bool enable,
384 bool enable_filtering)
385 {
386 u8 mgmt, vc0, vc1, vc4 = 0, vc5;
387
388 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
389 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, &vc0);
390 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, &vc1);
391
392 if (is5325(dev) || is5365(dev)) {
393 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
394 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, &vc5);
395 } else if (is63xx(dev)) {
396 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, &vc4);
397 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, &vc5);
398 } else {
399 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, &vc4);
400 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, &vc5);
401 }
402
403 vc1 &= ~VC1_RX_MCST_FWD_EN;
404
405 if (enable) {
406 vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
407 vc1 |= VC1_RX_MCST_UNTAG_EN;
408 vc4 &= ~VC4_ING_VID_CHECK_MASK;
409 if (enable_filtering) {
410 vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
411 vc5 |= VC5_DROP_VTABLE_MISS;
412 } else {
413 vc4 |= VC4_NO_ING_VID_CHK << VC4_ING_VID_CHECK_S;
414 vc5 &= ~VC5_DROP_VTABLE_MISS;
415 }
416
417 if (is5325(dev))
418 vc0 &= ~VC0_RESERVED_1;
419
420 if (is5325(dev) || is5365(dev))
421 vc1 |= VC1_RX_MCST_TAG_EN;
422
423 } else {
424 vc0 &= ~(VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID);
425 vc1 &= ~VC1_RX_MCST_UNTAG_EN;
426 vc4 &= ~VC4_ING_VID_CHECK_MASK;
427 vc5 &= ~VC5_DROP_VTABLE_MISS;
428
429 if (is5325(dev) || is5365(dev))
430 vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
431 else
432 vc4 |= VC4_ING_VID_VIO_TO_IMP << VC4_ING_VID_CHECK_S;
433
434 if (is5325(dev) || is5365(dev))
435 vc1 &= ~VC1_RX_MCST_TAG_EN;
436 }
437
438 if (!is5325(dev) && !is5365(dev))
439 vc5 &= ~VC5_VID_FFF_EN;
440
441 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL0, vc0);
442 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL1, vc1);
443
444 if (is5325(dev) || is5365(dev)) {
445 /* enable the high 8 bit vid check on 5325 */
446 if (is5325(dev) && enable)
447 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3,
448 VC3_HIGH_8BIT_EN);
449 else
450 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
451
452 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, vc4);
453 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_25, vc5);
454 } else if (is63xx(dev)) {
455 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3_63XX, 0);
456 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_63XX, vc4);
457 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5_63XX, vc5);
458 } else {
459 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_CTRL3, 0);
460 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4, vc4);
461 b53_write8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL5, vc5);
462 }
463
464 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
465
466 dev->vlan_enabled = enable;
467
468 dev_dbg(dev->dev, "Port %d VLAN enabled: %d, filtering: %d\n",
469 port, enable, enable_filtering);
470 }
471
b53_set_jumbo(struct b53_device * dev,bool enable,bool allow_10_100)472 static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
473 {
474 u32 port_mask = 0;
475 u16 max_size = JMS_MIN_SIZE;
476
477 if (is5325(dev) || is5365(dev))
478 return -EINVAL;
479
480 if (enable) {
481 port_mask = dev->enabled_ports;
482 max_size = JMS_MAX_SIZE;
483 if (allow_10_100)
484 port_mask |= JPM_10_100_JUMBO_EN;
485 }
486
487 b53_write32(dev, B53_JUMBO_PAGE, dev->jumbo_pm_reg, port_mask);
488 return b53_write16(dev, B53_JUMBO_PAGE, dev->jumbo_size_reg, max_size);
489 }
490
b53_flush_arl(struct b53_device * dev,u8 mask)491 static int b53_flush_arl(struct b53_device *dev, u8 mask)
492 {
493 unsigned int i;
494
495 if (is5325(dev))
496 return 0;
497
498 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
499 FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
500
501 for (i = 0; i < 10; i++) {
502 u8 fast_age_ctrl;
503
504 b53_read8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
505 &fast_age_ctrl);
506
507 if (!(fast_age_ctrl & FAST_AGE_DONE))
508 goto out;
509
510 msleep(1);
511 }
512
513 return -ETIMEDOUT;
514 out:
515 /* Only age dynamic entries (default behavior) */
516 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL, FAST_AGE_DYNAMIC);
517 return 0;
518 }
519
b53_fast_age_port(struct b53_device * dev,int port)520 static int b53_fast_age_port(struct b53_device *dev, int port)
521 {
522 if (is5325(dev))
523 return 0;
524
525 b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port);
526
527 return b53_flush_arl(dev, FAST_AGE_PORT);
528 }
529
b53_fast_age_vlan(struct b53_device * dev,u16 vid)530 static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
531 {
532 if (is5325(dev))
533 return 0;
534
535 b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid);
536
537 return b53_flush_arl(dev, FAST_AGE_VLAN);
538 }
539
b53_imp_vlan_setup(struct dsa_switch * ds,int cpu_port)540 void b53_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
541 {
542 struct b53_device *dev = ds->priv;
543 unsigned int i;
544 u16 pvlan;
545
546 /* BCM5325 CPU port is at 8 */
547 if ((is5325(dev) || is5365(dev)) && cpu_port == B53_CPU_PORT_25)
548 cpu_port = B53_CPU_PORT;
549
550 /* Enable the IMP port to be in the same VLAN as the other ports
551 * on a per-port basis such that we only have Port i and IMP in
552 * the same VLAN.
553 */
554 b53_for_each_port(dev, i) {
555 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), &pvlan);
556 pvlan |= BIT(cpu_port);
557 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), pvlan);
558 }
559 }
560 EXPORT_SYMBOL(b53_imp_vlan_setup);
561
b53_port_set_ucast_flood(struct b53_device * dev,int port,bool unicast)562 static void b53_port_set_ucast_flood(struct b53_device *dev, int port,
563 bool unicast)
564 {
565 u16 uc;
566
567 if (is5325(dev)) {
568 if (port == B53_CPU_PORT_25)
569 port = B53_CPU_PORT;
570
571 b53_read16(dev, B53_IEEE_PAGE, B53_IEEE_UCAST_DLF, &uc);
572 if (unicast)
573 uc |= BIT(port) | B53_IEEE_UCAST_DROP_EN;
574 else
575 uc &= ~BIT(port);
576 b53_write16(dev, B53_IEEE_PAGE, B53_IEEE_UCAST_DLF, uc);
577 } else {
578 b53_read16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, &uc);
579 if (unicast)
580 uc |= BIT(port);
581 else
582 uc &= ~BIT(port);
583 b53_write16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, uc);
584 }
585 }
586
b53_port_set_mcast_flood(struct b53_device * dev,int port,bool multicast)587 static void b53_port_set_mcast_flood(struct b53_device *dev, int port,
588 bool multicast)
589 {
590 u16 mc;
591
592 if (is5325(dev)) {
593 if (port == B53_CPU_PORT_25)
594 port = B53_CPU_PORT;
595
596 b53_read16(dev, B53_IEEE_PAGE, B53_IEEE_MCAST_DLF, &mc);
597 if (multicast)
598 mc |= BIT(port) | B53_IEEE_MCAST_DROP_EN;
599 else
600 mc &= ~BIT(port);
601 b53_write16(dev, B53_IEEE_PAGE, B53_IEEE_MCAST_DLF, mc);
602 } else {
603 b53_read16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, &mc);
604 if (multicast)
605 mc |= BIT(port);
606 else
607 mc &= ~BIT(port);
608 b53_write16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, mc);
609
610 b53_read16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, &mc);
611 if (multicast)
612 mc |= BIT(port);
613 else
614 mc &= ~BIT(port);
615 b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, mc);
616 }
617 }
618
b53_port_set_learning(struct b53_device * dev,int port,bool learning)619 static void b53_port_set_learning(struct b53_device *dev, int port,
620 bool learning)
621 {
622 u16 reg;
623
624 if (is5325(dev))
625 return;
626
627 b53_read16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, ®);
628 if (learning)
629 reg &= ~BIT(port);
630 else
631 reg |= BIT(port);
632 b53_write16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, reg);
633 }
634
b53_eee_enable_set(struct dsa_switch * ds,int port,bool enable)635 static void b53_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
636 {
637 struct b53_device *dev = ds->priv;
638 u16 reg;
639
640 b53_read16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, ®);
641 if (enable)
642 reg |= BIT(port);
643 else
644 reg &= ~BIT(port);
645 b53_write16(dev, B53_EEE_PAGE, B53_EEE_EN_CTRL, reg);
646 }
647
b53_setup_port(struct dsa_switch * ds,int port)648 int b53_setup_port(struct dsa_switch *ds, int port)
649 {
650 struct b53_device *dev = ds->priv;
651
652 b53_port_set_ucast_flood(dev, port, true);
653 b53_port_set_mcast_flood(dev, port, true);
654 b53_port_set_learning(dev, port, false);
655
656 /* Force all traffic to go to the CPU port to prevent the ASIC from
657 * trying to forward to bridged ports on matching FDB entries, then
658 * dropping frames because it isn't allowed to forward there.
659 */
660 if (dsa_is_user_port(ds, port))
661 b53_set_eap_mode(dev, port, EAP_MODE_SIMPLIFIED);
662
663 if (is5325(dev) &&
664 in_range(port, 1, 4)) {
665 u8 reg;
666
667 b53_read8(dev, B53_CTRL_PAGE, B53_PD_MODE_CTRL_25, ®);
668 reg &= ~PD_MODE_POWER_DOWN_PORT(0);
669 if (dsa_is_unused_port(ds, port))
670 reg |= PD_MODE_POWER_DOWN_PORT(port);
671 else
672 reg &= ~PD_MODE_POWER_DOWN_PORT(port);
673 b53_write8(dev, B53_CTRL_PAGE, B53_PD_MODE_CTRL_25, reg);
674 }
675
676 return 0;
677 }
678 EXPORT_SYMBOL(b53_setup_port);
679
b53_enable_port(struct dsa_switch * ds,int port,struct phy_device * phy)680 int b53_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
681 {
682 struct b53_device *dev = ds->priv;
683 unsigned int cpu_port;
684 int ret = 0;
685 u16 pvlan;
686
687 if (!dsa_is_user_port(ds, port))
688 return 0;
689
690 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
691
692 if (dev->ops->phy_enable)
693 dev->ops->phy_enable(dev, port);
694
695 if (dev->ops->irq_enable)
696 ret = dev->ops->irq_enable(dev, port);
697 if (ret)
698 return ret;
699
700 /* Clear the Rx and Tx disable bits and set to no spanning tree */
701 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), 0);
702
703 /* Set this port, and only this one to be in the default VLAN,
704 * if member of a bridge, restore its membership prior to
705 * bringing down this port.
706 */
707 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
708 pvlan &= ~0x1ff;
709 pvlan |= BIT(port);
710 pvlan |= dev->ports[port].vlan_ctl_mask;
711 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
712
713 b53_imp_vlan_setup(ds, cpu_port);
714
715 /* If EEE was enabled, restore it */
716 if (dev->ports[port].eee.eee_enabled)
717 b53_eee_enable_set(ds, port, true);
718
719 return 0;
720 }
721 EXPORT_SYMBOL(b53_enable_port);
722
b53_disable_port(struct dsa_switch * ds,int port)723 void b53_disable_port(struct dsa_switch *ds, int port)
724 {
725 struct b53_device *dev = ds->priv;
726 u8 reg;
727
728 /* Disable Tx/Rx for the port */
729 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), ®);
730 reg |= PORT_CTRL_RX_DISABLE | PORT_CTRL_TX_DISABLE;
731 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
732
733 if (dev->ops->phy_disable)
734 dev->ops->phy_disable(dev, port);
735
736 if (dev->ops->irq_disable)
737 dev->ops->irq_disable(dev, port);
738 }
739 EXPORT_SYMBOL(b53_disable_port);
740
b53_brcm_hdr_setup(struct dsa_switch * ds,int port)741 void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)
742 {
743 struct b53_device *dev = ds->priv;
744 bool tag_en = !(dev->tag_protocol == DSA_TAG_PROTO_NONE);
745 u8 hdr_ctl, val;
746 u16 reg;
747
748 /* Resolve which bit controls the Broadcom tag */
749 switch (port) {
750 case 8:
751 val = BRCM_HDR_P8_EN;
752 break;
753 case 7:
754 val = BRCM_HDR_P7_EN;
755 break;
756 case 5:
757 val = BRCM_HDR_P5_EN;
758 break;
759 default:
760 val = 0;
761 break;
762 }
763
764 /* Enable management mode if tagging is requested */
765 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &hdr_ctl);
766 if (tag_en)
767 hdr_ctl |= SM_SW_FWD_MODE;
768 else
769 hdr_ctl &= ~SM_SW_FWD_MODE;
770 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, hdr_ctl);
771
772 /* Configure the appropriate IMP port */
773 b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &hdr_ctl);
774 if (port == 8)
775 hdr_ctl |= GC_FRM_MGMT_PORT_MII;
776 else if (port == 5)
777 hdr_ctl |= GC_FRM_MGMT_PORT_M;
778 b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, hdr_ctl);
779
780 /* B53_BRCM_HDR not present on devices with legacy tags */
781 if (dev->tag_protocol == DSA_TAG_PROTO_BRCM_LEGACY ||
782 dev->tag_protocol == DSA_TAG_PROTO_BRCM_LEGACY_FCS)
783 return;
784
785 /* Enable Broadcom tags for IMP port */
786 b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl);
787 if (tag_en)
788 hdr_ctl |= val;
789 else
790 hdr_ctl &= ~val;
791 b53_write8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, hdr_ctl);
792
793 /* Registers below are only accessible on newer devices */
794 if (!is58xx(dev))
795 return;
796
797 /* Enable reception Broadcom tag for CPU TX (switch RX) to
798 * allow us to tag outgoing frames
799 */
800 b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, ®);
801 if (tag_en)
802 reg &= ~BIT(port);
803 else
804 reg |= BIT(port);
805 b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_RX_DIS, reg);
806
807 /* Enable transmission of Broadcom tags from the switch (CPU RX) to
808 * allow delivering frames to the per-port net_devices
809 */
810 b53_read16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, ®);
811 if (tag_en)
812 reg &= ~BIT(port);
813 else
814 reg |= BIT(port);
815 b53_write16(dev, B53_MGMT_PAGE, B53_BRCM_HDR_TX_DIS, reg);
816 }
817 EXPORT_SYMBOL(b53_brcm_hdr_setup);
818
b53_enable_cpu_port(struct b53_device * dev,int port)819 static void b53_enable_cpu_port(struct b53_device *dev, int port)
820 {
821 u8 port_ctrl;
822
823 /* BCM5325 CPU port is at 8 */
824 if ((is5325(dev) || is5365(dev)) && port == B53_CPU_PORT_25)
825 port = B53_CPU_PORT;
826
827 port_ctrl = PORT_CTRL_RX_BCST_EN |
828 PORT_CTRL_RX_MCST_EN |
829 PORT_CTRL_RX_UCST_EN;
830 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), port_ctrl);
831
832 b53_brcm_hdr_setup(dev->ds, port);
833 }
834
b53_enable_mib(struct b53_device * dev)835 static void b53_enable_mib(struct b53_device *dev)
836 {
837 u8 gc;
838
839 b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
840 gc &= ~(GC_RESET_MIB | GC_MIB_AC_EN);
841 b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
842 }
843
b53_enable_stp(struct b53_device * dev)844 static void b53_enable_stp(struct b53_device *dev)
845 {
846 u8 gc;
847
848 b53_read8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
849 gc |= GC_RX_BPDU_EN;
850 b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
851 }
852
b53_default_pvid(struct b53_device * dev)853 static u16 b53_default_pvid(struct b53_device *dev)
854 {
855 if (is5325(dev) || is5365(dev))
856 return 1;
857 else
858 return 0;
859 }
860
b53_vlan_port_needs_forced_tagged(struct dsa_switch * ds,int port)861 static bool b53_vlan_port_needs_forced_tagged(struct dsa_switch *ds, int port)
862 {
863 struct b53_device *dev = ds->priv;
864
865 return dev->tag_protocol == DSA_TAG_PROTO_NONE && dsa_is_cpu_port(ds, port);
866 }
867
b53_vlan_port_may_join_untagged(struct dsa_switch * ds,int port)868 static bool b53_vlan_port_may_join_untagged(struct dsa_switch *ds, int port)
869 {
870 struct b53_device *dev = ds->priv;
871 struct dsa_port *dp;
872
873 if (!dev->vlan_filtering)
874 return true;
875
876 dp = dsa_to_port(ds, port);
877
878 if (dsa_port_is_cpu(dp))
879 return true;
880
881 return dp->bridge == NULL;
882 }
883
b53_configure_vlan(struct dsa_switch * ds)884 int b53_configure_vlan(struct dsa_switch *ds)
885 {
886 struct b53_device *dev = ds->priv;
887 struct b53_vlan vl = { 0 };
888 struct b53_vlan *v;
889 int i, def_vid;
890 u16 vid;
891
892 def_vid = b53_default_pvid(dev);
893
894 /* clear all vlan entries */
895 if (is5325(dev) || is5365(dev)) {
896 for (i = def_vid; i < dev->num_vlans; i++)
897 b53_set_vlan_entry(dev, i, &vl);
898 } else {
899 b53_do_vlan_op(dev, VTA_CMD_CLEAR);
900 }
901
902 b53_enable_vlan(dev, -1, dev->vlan_enabled, dev->vlan_filtering);
903
904 /* Create an untagged VLAN entry for the default PVID in case
905 * CONFIG_VLAN_8021Q is disabled and there are no calls to
906 * dsa_user_vlan_rx_add_vid() to create the default VLAN
907 * entry. Do this only when the tagging protocol is not
908 * DSA_TAG_PROTO_NONE
909 */
910 v = &dev->vlans[def_vid];
911 b53_for_each_port(dev, i) {
912 if (!b53_vlan_port_may_join_untagged(ds, i))
913 continue;
914
915 vl.members |= BIT(i);
916 if (!b53_vlan_port_needs_forced_tagged(ds, i))
917 vl.untag = vl.members;
918 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(i),
919 def_vid);
920 }
921 b53_set_vlan_entry(dev, def_vid, &vl);
922
923 if (dev->vlan_filtering) {
924 /* Upon initial call we have not set-up any VLANs, but upon
925 * system resume, we need to restore all VLAN entries.
926 */
927 for (vid = def_vid + 1; vid < dev->num_vlans; vid++) {
928 v = &dev->vlans[vid];
929
930 if (!v->members)
931 continue;
932
933 b53_set_vlan_entry(dev, vid, v);
934 b53_fast_age_vlan(dev, vid);
935 }
936
937 b53_for_each_port(dev, i) {
938 if (!dsa_is_cpu_port(ds, i))
939 b53_write16(dev, B53_VLAN_PAGE,
940 B53_VLAN_PORT_DEF_TAG(i),
941 dev->ports[i].pvid);
942 }
943 }
944
945 return 0;
946 }
947 EXPORT_SYMBOL(b53_configure_vlan);
948
b53_switch_reset_gpio(struct b53_device * dev)949 static void b53_switch_reset_gpio(struct b53_device *dev)
950 {
951 int gpio = dev->reset_gpio;
952
953 if (gpio < 0)
954 return;
955
956 /* Reset sequence: RESET low(50ms)->high(20ms)
957 */
958 gpio_set_value(gpio, 0);
959 mdelay(50);
960
961 gpio_set_value(gpio, 1);
962 mdelay(20);
963
964 dev->current_page = 0xff;
965 }
966
b53_switch_reset(struct b53_device * dev)967 static int b53_switch_reset(struct b53_device *dev)
968 {
969 unsigned int timeout = 1000;
970 u8 mgmt, reg;
971
972 b53_switch_reset_gpio(dev);
973
974 if (is539x(dev)) {
975 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x83);
976 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00);
977 }
978
979 /* This is specific to 58xx devices here, do not use is58xx() which
980 * covers the larger Starfigther 2 family, including 7445/7278 which
981 * still use this driver as a library and need to perform the reset
982 * earlier.
983 */
984 if (dev->chip_id == BCM58XX_DEVICE_ID ||
985 dev->chip_id == BCM583XX_DEVICE_ID) {
986 b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, ®);
987 reg |= SW_RST | EN_SW_RST | EN_CH_RST;
988 b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, reg);
989
990 do {
991 b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, ®);
992 if (!(reg & SW_RST))
993 break;
994
995 usleep_range(1000, 2000);
996 } while (timeout-- > 0);
997
998 if (timeout == 0) {
999 dev_err(dev->dev,
1000 "Timeout waiting for SW_RST to clear!\n");
1001 return -ETIMEDOUT;
1002 }
1003 }
1004
1005 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
1006
1007 if (!(mgmt & SM_SW_FWD_EN)) {
1008 mgmt &= ~SM_SW_FWD_MODE;
1009 mgmt |= SM_SW_FWD_EN;
1010
1011 b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
1012 b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
1013
1014 if (!(mgmt & SM_SW_FWD_EN)) {
1015 dev_err(dev->dev, "Failed to enable switch!\n");
1016 return -EINVAL;
1017 }
1018 }
1019
1020 b53_enable_mib(dev);
1021 b53_enable_stp(dev);
1022
1023 return b53_flush_arl(dev, FAST_AGE_STATIC);
1024 }
1025
b53_phy_read16(struct dsa_switch * ds,int addr,int reg)1026 static int b53_phy_read16(struct dsa_switch *ds, int addr, int reg)
1027 {
1028 struct b53_device *priv = ds->priv;
1029 u16 value = 0;
1030 int ret;
1031
1032 if (priv->ops->phy_read16)
1033 ret = priv->ops->phy_read16(priv, addr, reg, &value);
1034 else
1035 ret = b53_read16(priv, B53_PORT_MII_PAGE(addr),
1036 reg * 2, &value);
1037
1038 return ret ? ret : value;
1039 }
1040
b53_phy_write16(struct dsa_switch * ds,int addr,int reg,u16 val)1041 static int b53_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val)
1042 {
1043 struct b53_device *priv = ds->priv;
1044
1045 if (priv->ops->phy_write16)
1046 return priv->ops->phy_write16(priv, addr, reg, val);
1047
1048 return b53_write16(priv, B53_PORT_MII_PAGE(addr), reg * 2, val);
1049 }
1050
b53_reset_switch(struct b53_device * priv)1051 static int b53_reset_switch(struct b53_device *priv)
1052 {
1053 /* reset vlans */
1054 memset(priv->vlans, 0, sizeof(*priv->vlans) * priv->num_vlans);
1055 memset(priv->ports, 0, sizeof(*priv->ports) * priv->num_ports);
1056
1057 priv->serdes_lane = B53_INVALID_LANE;
1058
1059 return b53_switch_reset(priv);
1060 }
1061
b53_apply_config(struct b53_device * priv)1062 static int b53_apply_config(struct b53_device *priv)
1063 {
1064 /* disable switching */
1065 b53_set_forwarding(priv, 0);
1066
1067 b53_configure_vlan(priv->ds);
1068
1069 /* enable switching */
1070 b53_set_forwarding(priv, 1);
1071
1072 return 0;
1073 }
1074
b53_reset_mib(struct b53_device * priv)1075 static void b53_reset_mib(struct b53_device *priv)
1076 {
1077 u8 gc;
1078
1079 b53_read8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, &gc);
1080
1081 b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc | GC_RESET_MIB);
1082 msleep(1);
1083 b53_write8(priv, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc & ~GC_RESET_MIB);
1084 msleep(1);
1085 }
1086
b53_get_mib(struct b53_device * dev)1087 static const struct b53_mib_desc *b53_get_mib(struct b53_device *dev)
1088 {
1089 if (is5365(dev))
1090 return b53_mibs_65;
1091 else if (is63xx(dev))
1092 return b53_mibs_63xx;
1093 else if (is58xx(dev))
1094 return b53_mibs_58xx;
1095 else
1096 return b53_mibs;
1097 }
1098
b53_get_mib_size(struct b53_device * dev)1099 static unsigned int b53_get_mib_size(struct b53_device *dev)
1100 {
1101 if (is5365(dev))
1102 return B53_MIBS_65_SIZE;
1103 else if (is63xx(dev))
1104 return B53_MIBS_63XX_SIZE;
1105 else if (is58xx(dev))
1106 return B53_MIBS_58XX_SIZE;
1107 else
1108 return B53_MIBS_SIZE;
1109 }
1110
b53_get_phy_device(struct dsa_switch * ds,int port)1111 static struct phy_device *b53_get_phy_device(struct dsa_switch *ds, int port)
1112 {
1113 /* These ports typically do not have built-in PHYs */
1114 switch (port) {
1115 case B53_CPU_PORT_25:
1116 case 7:
1117 case B53_CPU_PORT:
1118 return NULL;
1119 }
1120
1121 return mdiobus_get_phy(ds->user_mii_bus, port);
1122 }
1123
b53_get_strings(struct dsa_switch * ds,int port,u32 stringset,uint8_t * data)1124 void b53_get_strings(struct dsa_switch *ds, int port, u32 stringset,
1125 uint8_t *data)
1126 {
1127 struct b53_device *dev = ds->priv;
1128 const struct b53_mib_desc *mibs = b53_get_mib(dev);
1129 unsigned int mib_size = b53_get_mib_size(dev);
1130 struct phy_device *phydev;
1131 unsigned int i;
1132
1133 if (stringset == ETH_SS_STATS) {
1134 for (i = 0; i < mib_size; i++)
1135 ethtool_puts(&data, mibs[i].name);
1136 } else if (stringset == ETH_SS_PHY_STATS) {
1137 phydev = b53_get_phy_device(ds, port);
1138 if (!phydev)
1139 return;
1140
1141 phy_ethtool_get_strings(phydev, data);
1142 }
1143 }
1144 EXPORT_SYMBOL(b53_get_strings);
1145
b53_get_ethtool_stats(struct dsa_switch * ds,int port,uint64_t * data)1146 void b53_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data)
1147 {
1148 struct b53_device *dev = ds->priv;
1149 const struct b53_mib_desc *mibs = b53_get_mib(dev);
1150 unsigned int mib_size = b53_get_mib_size(dev);
1151 const struct b53_mib_desc *s;
1152 unsigned int i;
1153 u64 val = 0;
1154
1155 if (is5365(dev) && port == 5)
1156 port = 8;
1157
1158 mutex_lock(&dev->stats_mutex);
1159
1160 for (i = 0; i < mib_size; i++) {
1161 s = &mibs[i];
1162
1163 if (s->size == 8) {
1164 b53_read64(dev, B53_MIB_PAGE(port), s->offset, &val);
1165 } else {
1166 u32 val32;
1167
1168 b53_read32(dev, B53_MIB_PAGE(port), s->offset,
1169 &val32);
1170 val = val32;
1171 }
1172 data[i] = (u64)val;
1173 }
1174
1175 mutex_unlock(&dev->stats_mutex);
1176 }
1177 EXPORT_SYMBOL(b53_get_ethtool_stats);
1178
b53_get_ethtool_phy_stats(struct dsa_switch * ds,int port,uint64_t * data)1179 void b53_get_ethtool_phy_stats(struct dsa_switch *ds, int port, uint64_t *data)
1180 {
1181 struct phy_device *phydev;
1182
1183 phydev = b53_get_phy_device(ds, port);
1184 if (!phydev)
1185 return;
1186
1187 phy_ethtool_get_stats(phydev, NULL, data);
1188 }
1189 EXPORT_SYMBOL(b53_get_ethtool_phy_stats);
1190
b53_get_sset_count(struct dsa_switch * ds,int port,int sset)1191 int b53_get_sset_count(struct dsa_switch *ds, int port, int sset)
1192 {
1193 struct b53_device *dev = ds->priv;
1194 struct phy_device *phydev;
1195
1196 if (sset == ETH_SS_STATS) {
1197 return b53_get_mib_size(dev);
1198 } else if (sset == ETH_SS_PHY_STATS) {
1199 phydev = b53_get_phy_device(ds, port);
1200 if (!phydev)
1201 return 0;
1202
1203 return phy_ethtool_get_sset_count(phydev);
1204 }
1205
1206 return 0;
1207 }
1208 EXPORT_SYMBOL(b53_get_sset_count);
1209
1210 enum b53_devlink_resource_id {
1211 B53_DEVLINK_PARAM_ID_VLAN_TABLE,
1212 };
1213
b53_devlink_vlan_table_get(void * priv)1214 static u64 b53_devlink_vlan_table_get(void *priv)
1215 {
1216 struct b53_device *dev = priv;
1217 struct b53_vlan *vl;
1218 unsigned int i;
1219 u64 count = 0;
1220
1221 for (i = 0; i < dev->num_vlans; i++) {
1222 vl = &dev->vlans[i];
1223 if (vl->members)
1224 count++;
1225 }
1226
1227 return count;
1228 }
1229
b53_setup_devlink_resources(struct dsa_switch * ds)1230 int b53_setup_devlink_resources(struct dsa_switch *ds)
1231 {
1232 struct devlink_resource_size_params size_params;
1233 struct b53_device *dev = ds->priv;
1234 int err;
1235
1236 devlink_resource_size_params_init(&size_params, dev->num_vlans,
1237 dev->num_vlans,
1238 1, DEVLINK_RESOURCE_UNIT_ENTRY);
1239
1240 err = dsa_devlink_resource_register(ds, "VLAN", dev->num_vlans,
1241 B53_DEVLINK_PARAM_ID_VLAN_TABLE,
1242 DEVLINK_RESOURCE_ID_PARENT_TOP,
1243 &size_params);
1244 if (err)
1245 goto out;
1246
1247 dsa_devlink_resource_occ_get_register(ds,
1248 B53_DEVLINK_PARAM_ID_VLAN_TABLE,
1249 b53_devlink_vlan_table_get, dev);
1250
1251 return 0;
1252 out:
1253 dsa_devlink_resources_unregister(ds);
1254 return err;
1255 }
1256 EXPORT_SYMBOL(b53_setup_devlink_resources);
1257
b53_setup(struct dsa_switch * ds)1258 static int b53_setup(struct dsa_switch *ds)
1259 {
1260 struct b53_device *dev = ds->priv;
1261 struct b53_vlan *vl;
1262 unsigned int port;
1263 u16 pvid;
1264 int ret;
1265
1266 /* Request bridge PVID untagged when DSA_TAG_PROTO_NONE is set
1267 * which forces the CPU port to be tagged in all VLANs.
1268 */
1269 ds->untag_bridge_pvid = dev->tag_protocol == DSA_TAG_PROTO_NONE;
1270
1271 /* The switch does not tell us the original VLAN for untagged
1272 * packets, so keep the CPU port always tagged.
1273 */
1274 ds->untag_vlan_aware_bridge_pvid = true;
1275
1276 if (dev->chip_id == BCM53101_DEVICE_ID) {
1277 /* BCM53101 uses 0.5 second increments */
1278 ds->ageing_time_min = 1 * 500;
1279 ds->ageing_time_max = AGE_TIME_MAX * 500;
1280 } else {
1281 /* Everything else uses 1 second increments */
1282 ds->ageing_time_min = 1 * 1000;
1283 ds->ageing_time_max = AGE_TIME_MAX * 1000;
1284 }
1285
1286 ret = b53_reset_switch(dev);
1287 if (ret) {
1288 dev_err(ds->dev, "failed to reset switch\n");
1289 return ret;
1290 }
1291
1292 /* setup default vlan for filtering mode */
1293 pvid = b53_default_pvid(dev);
1294 vl = &dev->vlans[pvid];
1295 b53_for_each_port(dev, port) {
1296 vl->members |= BIT(port);
1297 if (!b53_vlan_port_needs_forced_tagged(ds, port))
1298 vl->untag |= BIT(port);
1299 }
1300
1301 b53_reset_mib(dev);
1302
1303 ret = b53_apply_config(dev);
1304 if (ret) {
1305 dev_err(ds->dev, "failed to apply configuration\n");
1306 return ret;
1307 }
1308
1309 /* Configure IMP/CPU port, disable all other ports. Enabled
1310 * ports will be configured with .port_enable
1311 */
1312 for (port = 0; port < dev->num_ports; port++) {
1313 if (dsa_is_cpu_port(ds, port))
1314 b53_enable_cpu_port(dev, port);
1315 else
1316 b53_disable_port(ds, port);
1317 }
1318
1319 return b53_setup_devlink_resources(ds);
1320 }
1321
b53_teardown(struct dsa_switch * ds)1322 static void b53_teardown(struct dsa_switch *ds)
1323 {
1324 dsa_devlink_resources_unregister(ds);
1325 }
1326
b53_force_link(struct b53_device * dev,int port,int link)1327 static void b53_force_link(struct b53_device *dev, int port, int link)
1328 {
1329 u8 reg, val, off;
1330
1331 /* Override the port settings */
1332 if (port == dev->imp_port) {
1333 off = B53_PORT_OVERRIDE_CTRL;
1334 val = PORT_OVERRIDE_EN;
1335 } else if (is5325(dev)) {
1336 return;
1337 } else {
1338 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
1339 val = GMII_PO_EN;
1340 }
1341
1342 b53_read8(dev, B53_CTRL_PAGE, off, ®);
1343 reg |= val;
1344 if (link)
1345 reg |= PORT_OVERRIDE_LINK;
1346 else
1347 reg &= ~PORT_OVERRIDE_LINK;
1348 b53_write8(dev, B53_CTRL_PAGE, off, reg);
1349 }
1350
b53_force_port_config(struct b53_device * dev,int port,int speed,int duplex,bool tx_pause,bool rx_pause)1351 static void b53_force_port_config(struct b53_device *dev, int port,
1352 int speed, int duplex,
1353 bool tx_pause, bool rx_pause)
1354 {
1355 u8 reg, val, off;
1356
1357 /* Override the port settings */
1358 if (port == dev->imp_port) {
1359 off = B53_PORT_OVERRIDE_CTRL;
1360 val = PORT_OVERRIDE_EN;
1361 } else if (is5325(dev)) {
1362 return;
1363 } else {
1364 off = B53_GMII_PORT_OVERRIDE_CTRL(port);
1365 val = GMII_PO_EN;
1366 }
1367
1368 b53_read8(dev, B53_CTRL_PAGE, off, ®);
1369 reg |= val;
1370 if (duplex == DUPLEX_FULL)
1371 reg |= PORT_OVERRIDE_FULL_DUPLEX;
1372 else
1373 reg &= ~PORT_OVERRIDE_FULL_DUPLEX;
1374
1375 switch (speed) {
1376 case 2000:
1377 reg |= PORT_OVERRIDE_SPEED_2000M;
1378 fallthrough;
1379 case SPEED_1000:
1380 reg |= PORT_OVERRIDE_SPEED_1000M;
1381 break;
1382 case SPEED_100:
1383 reg |= PORT_OVERRIDE_SPEED_100M;
1384 break;
1385 case SPEED_10:
1386 reg |= PORT_OVERRIDE_SPEED_10M;
1387 break;
1388 default:
1389 dev_err(dev->dev, "unknown speed: %d\n", speed);
1390 return;
1391 }
1392
1393 if (rx_pause) {
1394 if (is5325(dev))
1395 reg |= PORT_OVERRIDE_LP_FLOW_25;
1396 else
1397 reg |= PORT_OVERRIDE_RX_FLOW;
1398 }
1399
1400 if (tx_pause) {
1401 if (is5325(dev))
1402 reg |= PORT_OVERRIDE_LP_FLOW_25;
1403 else
1404 reg |= PORT_OVERRIDE_TX_FLOW;
1405 }
1406
1407 b53_write8(dev, B53_CTRL_PAGE, off, reg);
1408 }
1409
b53_adjust_63xx_rgmii(struct dsa_switch * ds,int port,phy_interface_t interface)1410 static void b53_adjust_63xx_rgmii(struct dsa_switch *ds, int port,
1411 phy_interface_t interface)
1412 {
1413 struct b53_device *dev = ds->priv;
1414 u8 rgmii_ctrl = 0;
1415
1416 b53_read8(dev, B53_CTRL_PAGE, B53_RGMII_CTRL_P(port), &rgmii_ctrl);
1417 rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC);
1418
1419 if (is6318_268(dev))
1420 rgmii_ctrl |= RGMII_CTRL_MII_OVERRIDE;
1421
1422 rgmii_ctrl |= RGMII_CTRL_ENABLE_GMII;
1423
1424 b53_write8(dev, B53_CTRL_PAGE, B53_RGMII_CTRL_P(port), rgmii_ctrl);
1425
1426 dev_dbg(ds->dev, "Configured port %d for %s\n", port,
1427 phy_modes(interface));
1428 }
1429
b53_adjust_531x5_rgmii(struct dsa_switch * ds,int port,phy_interface_t interface)1430 static void b53_adjust_531x5_rgmii(struct dsa_switch *ds, int port,
1431 phy_interface_t interface)
1432 {
1433 struct b53_device *dev = ds->priv;
1434 u8 rgmii_ctrl = 0, off;
1435
1436 if (port == dev->imp_port)
1437 off = B53_RGMII_CTRL_IMP;
1438 else
1439 off = B53_RGMII_CTRL_P(port);
1440
1441 /* Configure the port RGMII clock delay by DLL disabled and
1442 * tx_clk aligned timing (restoring to reset defaults)
1443 */
1444 b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl);
1445 rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC);
1446
1447 /* PHY_INTERFACE_MODE_RGMII_TXID means TX internal delay, make
1448 * sure that we enable the port TX clock internal delay to
1449 * account for this internal delay that is inserted, otherwise
1450 * the switch won't be able to receive correctly.
1451 *
1452 * PHY_INTERFACE_MODE_RGMII means that we are not introducing
1453 * any delay neither on transmission nor reception, so the
1454 * BCM53125 must also be configured accordingly to account for
1455 * the lack of delay and introduce
1456 *
1457 * The BCM53125 switch has its RX clock and TX clock control
1458 * swapped, hence the reason why we modify the TX clock path in
1459 * the "RGMII" case
1460 */
1461 if (interface == PHY_INTERFACE_MODE_RGMII_TXID)
1462 rgmii_ctrl |= RGMII_CTRL_DLL_TXC;
1463 if (interface == PHY_INTERFACE_MODE_RGMII)
1464 rgmii_ctrl |= RGMII_CTRL_DLL_TXC | RGMII_CTRL_DLL_RXC;
1465
1466 if (dev->chip_id != BCM53115_DEVICE_ID)
1467 rgmii_ctrl |= RGMII_CTRL_TIMING_SEL;
1468
1469 b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
1470
1471 dev_info(ds->dev, "Configured port %d for %s\n", port,
1472 phy_modes(interface));
1473 }
1474
b53_adjust_5325_mii(struct dsa_switch * ds,int port)1475 static void b53_adjust_5325_mii(struct dsa_switch *ds, int port)
1476 {
1477 struct b53_device *dev = ds->priv;
1478 u8 reg = 0;
1479
1480 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1481 ®);
1482
1483 /* reverse mii needs to be enabled */
1484 if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1485 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1486 reg | PORT_OVERRIDE_RV_MII_25);
1487 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
1488 ®);
1489
1490 if (!(reg & PORT_OVERRIDE_RV_MII_25)) {
1491 dev_err(ds->dev,
1492 "Failed to enable reverse MII mode\n");
1493 return;
1494 }
1495 }
1496 }
1497
b53_port_event(struct dsa_switch * ds,int port)1498 void b53_port_event(struct dsa_switch *ds, int port)
1499 {
1500 struct b53_device *dev = ds->priv;
1501 bool link;
1502 u16 sts;
1503
1504 b53_read16(dev, B53_STAT_PAGE, B53_LINK_STAT, &sts);
1505 link = !!(sts & BIT(port));
1506 dsa_port_phylink_mac_change(ds, port, link);
1507 }
1508 EXPORT_SYMBOL(b53_port_event);
1509
b53_phylink_get_caps(struct dsa_switch * ds,int port,struct phylink_config * config)1510 static void b53_phylink_get_caps(struct dsa_switch *ds, int port,
1511 struct phylink_config *config)
1512 {
1513 struct b53_device *dev = ds->priv;
1514
1515 /* Internal ports need GMII for PHYLIB */
1516 __set_bit(PHY_INTERFACE_MODE_GMII, config->supported_interfaces);
1517
1518 /* These switches appear to support MII and RevMII too, but beyond
1519 * this, the code gives very few clues. FIXME: We probably need more
1520 * interface modes here.
1521 *
1522 * According to b53_srab_mux_init(), ports 3..5 can support:
1523 * SGMII, MII, GMII, RGMII or INTERNAL depending on the MUX setting.
1524 * However, the interface mode read from the MUX configuration is
1525 * not passed back to DSA, so phylink uses NA.
1526 * DT can specify RGMII for ports 0, 1.
1527 * For MDIO, port 8 can be RGMII_TXID.
1528 */
1529 __set_bit(PHY_INTERFACE_MODE_MII, config->supported_interfaces);
1530 __set_bit(PHY_INTERFACE_MODE_REVMII, config->supported_interfaces);
1531
1532 /* BCM63xx RGMII ports support RGMII */
1533 if (is63xx(dev) && in_range(port, B53_63XX_RGMII0, 4))
1534 phy_interface_set_rgmii(config->supported_interfaces);
1535
1536 config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
1537 MAC_10 | MAC_100;
1538
1539 /* 5325/5365 are not capable of gigabit speeds, everything else is.
1540 * Note: the original code also exclulded Gigagbit for MII, RevMII
1541 * and 802.3z modes. MII and RevMII are not able to work above 100M,
1542 * so will be excluded by the generic validator implementation.
1543 * However, the exclusion of Gigabit for 802.3z just seems wrong.
1544 */
1545 if (!(is5325(dev) || is5365(dev)))
1546 config->mac_capabilities |= MAC_1000;
1547
1548 /* Get the implementation specific capabilities */
1549 if (dev->ops->phylink_get_caps)
1550 dev->ops->phylink_get_caps(dev, port, config);
1551 }
1552
b53_phylink_mac_select_pcs(struct phylink_config * config,phy_interface_t interface)1553 static struct phylink_pcs *b53_phylink_mac_select_pcs(struct phylink_config *config,
1554 phy_interface_t interface)
1555 {
1556 struct dsa_port *dp = dsa_phylink_to_port(config);
1557 struct b53_device *dev = dp->ds->priv;
1558
1559 if (!dev->ops->phylink_mac_select_pcs)
1560 return NULL;
1561
1562 return dev->ops->phylink_mac_select_pcs(dev, dp->index, interface);
1563 }
1564
b53_phylink_mac_config(struct phylink_config * config,unsigned int mode,const struct phylink_link_state * state)1565 static void b53_phylink_mac_config(struct phylink_config *config,
1566 unsigned int mode,
1567 const struct phylink_link_state *state)
1568 {
1569 struct dsa_port *dp = dsa_phylink_to_port(config);
1570 phy_interface_t interface = state->interface;
1571 struct dsa_switch *ds = dp->ds;
1572 struct b53_device *dev = ds->priv;
1573 int port = dp->index;
1574
1575 if (is63xx(dev) && in_range(port, B53_63XX_RGMII0, 4))
1576 b53_adjust_63xx_rgmii(ds, port, interface);
1577
1578 if (mode == MLO_AN_FIXED) {
1579 if (is531x5(dev) && phy_interface_mode_is_rgmii(interface))
1580 b53_adjust_531x5_rgmii(ds, port, interface);
1581
1582 /* configure MII port if necessary */
1583 if (is5325(dev))
1584 b53_adjust_5325_mii(ds, port);
1585 }
1586 }
1587
b53_phylink_mac_link_down(struct phylink_config * config,unsigned int mode,phy_interface_t interface)1588 static void b53_phylink_mac_link_down(struct phylink_config *config,
1589 unsigned int mode,
1590 phy_interface_t interface)
1591 {
1592 struct dsa_port *dp = dsa_phylink_to_port(config);
1593 struct b53_device *dev = dp->ds->priv;
1594 int port = dp->index;
1595
1596 if (mode == MLO_AN_PHY)
1597 return;
1598
1599 if (mode == MLO_AN_FIXED) {
1600 b53_force_link(dev, port, false);
1601 return;
1602 }
1603
1604 if (phy_interface_mode_is_8023z(interface) &&
1605 dev->ops->serdes_link_set)
1606 dev->ops->serdes_link_set(dev, port, mode, interface, false);
1607 }
1608
b53_phylink_mac_link_up(struct phylink_config * config,struct phy_device * phydev,unsigned int mode,phy_interface_t interface,int speed,int duplex,bool tx_pause,bool rx_pause)1609 static void b53_phylink_mac_link_up(struct phylink_config *config,
1610 struct phy_device *phydev,
1611 unsigned int mode,
1612 phy_interface_t interface,
1613 int speed, int duplex,
1614 bool tx_pause, bool rx_pause)
1615 {
1616 struct dsa_port *dp = dsa_phylink_to_port(config);
1617 struct dsa_switch *ds = dp->ds;
1618 struct b53_device *dev = ds->priv;
1619 struct ethtool_keee *p = &dev->ports[dp->index].eee;
1620 int port = dp->index;
1621
1622 if (mode == MLO_AN_PHY) {
1623 /* Re-negotiate EEE if it was enabled already */
1624 p->eee_enabled = b53_eee_init(ds, port, phydev);
1625 return;
1626 }
1627
1628 if (mode == MLO_AN_FIXED) {
1629 /* Force flow control on BCM5301x's CPU port */
1630 if (is5301x(dev) && dsa_is_cpu_port(ds, port))
1631 tx_pause = rx_pause = true;
1632
1633 b53_force_port_config(dev, port, speed, duplex,
1634 tx_pause, rx_pause);
1635 b53_force_link(dev, port, true);
1636 return;
1637 }
1638
1639 if (phy_interface_mode_is_8023z(interface) &&
1640 dev->ops->serdes_link_set)
1641 dev->ops->serdes_link_set(dev, port, mode, interface, true);
1642 }
1643
b53_vlan_filtering(struct dsa_switch * ds,int port,bool vlan_filtering,struct netlink_ext_ack * extack)1644 int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering,
1645 struct netlink_ext_ack *extack)
1646 {
1647 struct b53_device *dev = ds->priv;
1648
1649 if (dev->vlan_filtering != vlan_filtering) {
1650 dev->vlan_filtering = vlan_filtering;
1651 b53_apply_config(dev);
1652 }
1653
1654 return 0;
1655 }
1656 EXPORT_SYMBOL(b53_vlan_filtering);
1657
b53_vlan_prepare(struct dsa_switch * ds,int port,const struct switchdev_obj_port_vlan * vlan)1658 static int b53_vlan_prepare(struct dsa_switch *ds, int port,
1659 const struct switchdev_obj_port_vlan *vlan)
1660 {
1661 struct b53_device *dev = ds->priv;
1662
1663 if ((is5325(dev) || is5365(dev)) && vlan->vid == 0)
1664 return -EOPNOTSUPP;
1665
1666 /* Port 7 on 7278 connects to the ASP's UniMAC which is not capable of
1667 * receiving VLAN tagged frames at all, we can still allow the port to
1668 * be configured for egress untagged.
1669 */
1670 if (dev->chip_id == BCM7278_DEVICE_ID && port == 7 &&
1671 !(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED))
1672 return -EINVAL;
1673
1674 if (vlan->vid >= dev->num_vlans)
1675 return -ERANGE;
1676
1677 b53_enable_vlan(dev, port, true, dev->vlan_filtering);
1678
1679 return 0;
1680 }
1681
b53_vlan_add(struct dsa_switch * ds,int port,const struct switchdev_obj_port_vlan * vlan,struct netlink_ext_ack * extack)1682 int b53_vlan_add(struct dsa_switch *ds, int port,
1683 const struct switchdev_obj_port_vlan *vlan,
1684 struct netlink_ext_ack *extack)
1685 {
1686 struct b53_device *dev = ds->priv;
1687 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1688 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
1689 struct b53_vlan *vl;
1690 u16 old_pvid, new_pvid;
1691 int err;
1692
1693 err = b53_vlan_prepare(ds, port, vlan);
1694 if (err)
1695 return err;
1696
1697 if (vlan->vid == 0)
1698 return 0;
1699
1700 old_pvid = dev->ports[port].pvid;
1701 if (pvid)
1702 new_pvid = vlan->vid;
1703 else if (!pvid && vlan->vid == old_pvid)
1704 new_pvid = b53_default_pvid(dev);
1705 else
1706 new_pvid = old_pvid;
1707 dev->ports[port].pvid = new_pvid;
1708
1709 vl = &dev->vlans[vlan->vid];
1710
1711 if (dsa_is_cpu_port(ds, port))
1712 untagged = false;
1713
1714 vl->members |= BIT(port);
1715 if (untagged && !b53_vlan_port_needs_forced_tagged(ds, port))
1716 vl->untag |= BIT(port);
1717 else
1718 vl->untag &= ~BIT(port);
1719
1720 if (!dev->vlan_filtering)
1721 return 0;
1722
1723 b53_set_vlan_entry(dev, vlan->vid, vl);
1724 b53_fast_age_vlan(dev, vlan->vid);
1725
1726 if (!dsa_is_cpu_port(ds, port) && new_pvid != old_pvid) {
1727 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
1728 new_pvid);
1729 b53_fast_age_vlan(dev, old_pvid);
1730 }
1731
1732 return 0;
1733 }
1734 EXPORT_SYMBOL(b53_vlan_add);
1735
b53_vlan_del(struct dsa_switch * ds,int port,const struct switchdev_obj_port_vlan * vlan)1736 int b53_vlan_del(struct dsa_switch *ds, int port,
1737 const struct switchdev_obj_port_vlan *vlan)
1738 {
1739 struct b53_device *dev = ds->priv;
1740 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
1741 struct b53_vlan *vl;
1742 u16 pvid;
1743
1744 if (vlan->vid == 0)
1745 return 0;
1746
1747 pvid = dev->ports[port].pvid;
1748
1749 vl = &dev->vlans[vlan->vid];
1750
1751 vl->members &= ~BIT(port);
1752
1753 if (pvid == vlan->vid)
1754 pvid = b53_default_pvid(dev);
1755 dev->ports[port].pvid = pvid;
1756
1757 if (untagged && !b53_vlan_port_needs_forced_tagged(ds, port))
1758 vl->untag &= ~(BIT(port));
1759
1760 if (!dev->vlan_filtering)
1761 return 0;
1762
1763 b53_set_vlan_entry(dev, vlan->vid, vl);
1764 b53_fast_age_vlan(dev, vlan->vid);
1765
1766 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), pvid);
1767 b53_fast_age_vlan(dev, pvid);
1768
1769 return 0;
1770 }
1771 EXPORT_SYMBOL(b53_vlan_del);
1772
1773 /* Address Resolution Logic routines. Caller must hold &dev->arl_mutex. */
b53_arl_op_wait(struct b53_device * dev)1774 static int b53_arl_op_wait(struct b53_device *dev)
1775 {
1776 unsigned int timeout = 10;
1777 u8 reg;
1778
1779 do {
1780 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, ®);
1781 if (!(reg & ARLTBL_START_DONE))
1782 return 0;
1783
1784 usleep_range(1000, 2000);
1785 } while (timeout--);
1786
1787 dev_warn(dev->dev, "timeout waiting for ARL to finish: 0x%02x\n", reg);
1788
1789 return -ETIMEDOUT;
1790 }
1791
b53_arl_rw_op(struct b53_device * dev,unsigned int op)1792 static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
1793 {
1794 u8 reg;
1795
1796 if (op > ARLTBL_RW)
1797 return -EINVAL;
1798
1799 b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, ®);
1800 reg |= ARLTBL_START_DONE;
1801 if (op)
1802 reg |= ARLTBL_RW;
1803 else
1804 reg &= ~ARLTBL_RW;
1805 if (dev->vlan_enabled)
1806 reg &= ~ARLTBL_IVL_SVL_SELECT;
1807 else
1808 reg |= ARLTBL_IVL_SVL_SELECT;
1809 b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_RW_CTRL, reg);
1810
1811 return b53_arl_op_wait(dev);
1812 }
1813
b53_arl_read(struct b53_device * dev,u64 mac,u16 vid,struct b53_arl_entry * ent,u8 * idx)1814 static int b53_arl_read(struct b53_device *dev, u64 mac,
1815 u16 vid, struct b53_arl_entry *ent, u8 *idx)
1816 {
1817 DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
1818 unsigned int i;
1819 int ret;
1820
1821 ret = b53_arl_op_wait(dev);
1822 if (ret)
1823 return ret;
1824
1825 bitmap_zero(free_bins, dev->num_arl_bins);
1826
1827 /* Read the bins */
1828 for (i = 0; i < dev->num_arl_bins; i++) {
1829 u64 mac_vid;
1830 u32 fwd_entry;
1831
1832 b53_read64(dev, B53_ARLIO_PAGE,
1833 B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
1834 b53_read32(dev, B53_ARLIO_PAGE,
1835 B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
1836 b53_arl_to_entry(ent, mac_vid, fwd_entry);
1837
1838 if (!(fwd_entry & ARLTBL_VALID)) {
1839 set_bit(i, free_bins);
1840 continue;
1841 }
1842 if ((mac_vid & ARLTBL_MAC_MASK) != mac)
1843 continue;
1844 if (dev->vlan_enabled &&
1845 ((mac_vid >> ARLTBL_VID_S) & ARLTBL_VID_MASK) != vid)
1846 continue;
1847 *idx = i;
1848 return 0;
1849 }
1850
1851 *idx = find_first_bit(free_bins, dev->num_arl_bins);
1852 return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT;
1853 }
1854
b53_arl_read_25(struct b53_device * dev,u64 mac,u16 vid,struct b53_arl_entry * ent,u8 * idx)1855 static int b53_arl_read_25(struct b53_device *dev, u64 mac,
1856 u16 vid, struct b53_arl_entry *ent, u8 *idx)
1857 {
1858 DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
1859 unsigned int i;
1860 int ret;
1861
1862 ret = b53_arl_op_wait(dev);
1863 if (ret)
1864 return ret;
1865
1866 bitmap_zero(free_bins, dev->num_arl_bins);
1867
1868 /* Read the bins */
1869 for (i = 0; i < dev->num_arl_bins; i++) {
1870 u64 mac_vid;
1871
1872 b53_read64(dev, B53_ARLIO_PAGE,
1873 B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
1874
1875 b53_arl_to_entry_25(ent, mac_vid);
1876
1877 if (!(mac_vid & ARLTBL_VALID_25)) {
1878 set_bit(i, free_bins);
1879 continue;
1880 }
1881 if ((mac_vid & ARLTBL_MAC_MASK) != mac)
1882 continue;
1883 if (dev->vlan_enabled &&
1884 ((mac_vid >> ARLTBL_VID_S_65) & ARLTBL_VID_MASK_25) != vid)
1885 continue;
1886 *idx = i;
1887 return 0;
1888 }
1889
1890 *idx = find_first_bit(free_bins, dev->num_arl_bins);
1891 return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT;
1892 }
1893
b53_arl_op(struct b53_device * dev,int op,int port,const unsigned char * addr,u16 vid,bool is_valid)1894 static int b53_arl_op(struct b53_device *dev, int op, int port,
1895 const unsigned char *addr, u16 vid, bool is_valid)
1896 {
1897 struct b53_arl_entry ent;
1898 u32 fwd_entry;
1899 u64 mac, mac_vid = 0;
1900 u8 idx = 0;
1901 int ret;
1902
1903 /* Convert the array into a 64-bit MAC */
1904 mac = ether_addr_to_u64(addr);
1905
1906 /* Perform a read for the given MAC and VID */
1907 b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
1908 if (!is5325m(dev))
1909 b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
1910
1911 /* Issue a read operation for this MAC */
1912 ret = b53_arl_rw_op(dev, 1);
1913 if (ret)
1914 return ret;
1915
1916 if (is5325(dev) || is5365(dev))
1917 ret = b53_arl_read_25(dev, mac, vid, &ent, &idx);
1918 else
1919 ret = b53_arl_read(dev, mac, vid, &ent, &idx);
1920
1921 /* If this is a read, just finish now */
1922 if (op)
1923 return ret;
1924
1925 switch (ret) {
1926 case -ETIMEDOUT:
1927 return ret;
1928 case -ENOSPC:
1929 dev_dbg(dev->dev, "{%pM,%.4d} no space left in ARL\n",
1930 addr, vid);
1931 return is_valid ? ret : 0;
1932 case -ENOENT:
1933 /* We could not find a matching MAC, so reset to a new entry */
1934 dev_dbg(dev->dev, "{%pM,%.4d} not found, using idx: %d\n",
1935 addr, vid, idx);
1936 fwd_entry = 0;
1937 break;
1938 default:
1939 dev_dbg(dev->dev, "{%pM,%.4d} found, using idx: %d\n",
1940 addr, vid, idx);
1941 break;
1942 }
1943
1944 /* For multicast address, the port is a bitmask and the validity
1945 * is determined by having at least one port being still active
1946 */
1947 if (!is_multicast_ether_addr(addr)) {
1948 ent.port = port;
1949 ent.is_valid = is_valid;
1950 } else {
1951 if (is_valid)
1952 ent.port |= BIT(port);
1953 else
1954 ent.port &= ~BIT(port);
1955
1956 ent.is_valid = !!(ent.port);
1957 }
1958
1959 ent.vid = vid;
1960 ent.is_static = true;
1961 ent.is_age = false;
1962 memcpy(ent.mac, addr, ETH_ALEN);
1963 if (is5325(dev) || is5365(dev))
1964 b53_arl_from_entry_25(&mac_vid, &ent);
1965 else
1966 b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
1967
1968 b53_write64(dev, B53_ARLIO_PAGE,
1969 B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
1970
1971 if (!is5325(dev) && !is5365(dev))
1972 b53_write32(dev, B53_ARLIO_PAGE,
1973 B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
1974
1975 return b53_arl_rw_op(dev, 0);
1976 }
1977
b53_fdb_add(struct dsa_switch * ds,int port,const unsigned char * addr,u16 vid,struct dsa_db db)1978 int b53_fdb_add(struct dsa_switch *ds, int port,
1979 const unsigned char *addr, u16 vid,
1980 struct dsa_db db)
1981 {
1982 struct b53_device *priv = ds->priv;
1983 int ret;
1984
1985 mutex_lock(&priv->arl_mutex);
1986 ret = b53_arl_op(priv, 0, port, addr, vid, true);
1987 mutex_unlock(&priv->arl_mutex);
1988
1989 return ret;
1990 }
1991 EXPORT_SYMBOL(b53_fdb_add);
1992
b53_fdb_del(struct dsa_switch * ds,int port,const unsigned char * addr,u16 vid,struct dsa_db db)1993 int b53_fdb_del(struct dsa_switch *ds, int port,
1994 const unsigned char *addr, u16 vid,
1995 struct dsa_db db)
1996 {
1997 struct b53_device *priv = ds->priv;
1998 int ret;
1999
2000 mutex_lock(&priv->arl_mutex);
2001 ret = b53_arl_op(priv, 0, port, addr, vid, false);
2002 mutex_unlock(&priv->arl_mutex);
2003
2004 return ret;
2005 }
2006 EXPORT_SYMBOL(b53_fdb_del);
2007
b53_arl_search_wait(struct b53_device * dev)2008 static int b53_arl_search_wait(struct b53_device *dev)
2009 {
2010 unsigned int timeout = 1000;
2011 u8 reg, offset;
2012
2013 if (is5325(dev) || is5365(dev))
2014 offset = B53_ARL_SRCH_CTL_25;
2015 else
2016 offset = B53_ARL_SRCH_CTL;
2017
2018 do {
2019 b53_read8(dev, B53_ARLIO_PAGE, offset, ®);
2020 if (!(reg & ARL_SRCH_STDN))
2021 return 0;
2022
2023 if (reg & ARL_SRCH_VLID)
2024 return 0;
2025
2026 usleep_range(1000, 2000);
2027 } while (timeout--);
2028
2029 return -ETIMEDOUT;
2030 }
2031
b53_arl_search_rd(struct b53_device * dev,u8 idx,struct b53_arl_entry * ent)2032 static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
2033 struct b53_arl_entry *ent)
2034 {
2035 u64 mac_vid;
2036
2037 if (is5325(dev)) {
2038 b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_0_MACVID_25,
2039 &mac_vid);
2040 b53_arl_to_entry_25(ent, mac_vid);
2041 } else if (is5365(dev)) {
2042 b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_0_MACVID_65,
2043 &mac_vid);
2044 b53_arl_to_entry_25(ent, mac_vid);
2045 } else {
2046 u32 fwd_entry;
2047
2048 b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_MACVID(idx),
2049 &mac_vid);
2050 b53_read32(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL(idx),
2051 &fwd_entry);
2052 b53_arl_to_entry(ent, mac_vid, fwd_entry);
2053 }
2054 }
2055
b53_fdb_copy(int port,const struct b53_arl_entry * ent,dsa_fdb_dump_cb_t * cb,void * data)2056 static int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
2057 dsa_fdb_dump_cb_t *cb, void *data)
2058 {
2059 if (!ent->is_valid)
2060 return 0;
2061
2062 if (port != ent->port)
2063 return 0;
2064
2065 return cb(ent->mac, ent->vid, ent->is_static, data);
2066 }
2067
b53_fdb_dump(struct dsa_switch * ds,int port,dsa_fdb_dump_cb_t * cb,void * data)2068 int b53_fdb_dump(struct dsa_switch *ds, int port,
2069 dsa_fdb_dump_cb_t *cb, void *data)
2070 {
2071 struct b53_device *priv = ds->priv;
2072 struct b53_arl_entry results[2];
2073 unsigned int count = 0;
2074 u8 offset;
2075 int ret;
2076 u8 reg;
2077
2078 mutex_lock(&priv->arl_mutex);
2079
2080 if (is5325(priv) || is5365(priv))
2081 offset = B53_ARL_SRCH_CTL_25;
2082 else
2083 offset = B53_ARL_SRCH_CTL;
2084
2085 /* Start search operation */
2086 reg = ARL_SRCH_STDN;
2087 b53_write8(priv, B53_ARLIO_PAGE, offset, reg);
2088
2089 do {
2090 ret = b53_arl_search_wait(priv);
2091 if (ret)
2092 break;
2093
2094 b53_arl_search_rd(priv, 0, &results[0]);
2095 ret = b53_fdb_copy(port, &results[0], cb, data);
2096 if (ret)
2097 break;
2098
2099 if (priv->num_arl_bins > 2) {
2100 b53_arl_search_rd(priv, 1, &results[1]);
2101 ret = b53_fdb_copy(port, &results[1], cb, data);
2102 if (ret)
2103 break;
2104
2105 if (!results[0].is_valid && !results[1].is_valid)
2106 break;
2107 }
2108
2109 } while (count++ < b53_max_arl_entries(priv) / 2);
2110
2111 mutex_unlock(&priv->arl_mutex);
2112
2113 return 0;
2114 }
2115 EXPORT_SYMBOL(b53_fdb_dump);
2116
b53_mdb_add(struct dsa_switch * ds,int port,const struct switchdev_obj_port_mdb * mdb,struct dsa_db db)2117 int b53_mdb_add(struct dsa_switch *ds, int port,
2118 const struct switchdev_obj_port_mdb *mdb,
2119 struct dsa_db db)
2120 {
2121 struct b53_device *priv = ds->priv;
2122 int ret;
2123
2124 /* 5325 and 5365 require some more massaging, but could
2125 * be supported eventually
2126 */
2127 if (is5325(priv) || is5365(priv))
2128 return -EOPNOTSUPP;
2129
2130 mutex_lock(&priv->arl_mutex);
2131 ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
2132 mutex_unlock(&priv->arl_mutex);
2133
2134 return ret;
2135 }
2136 EXPORT_SYMBOL(b53_mdb_add);
2137
b53_mdb_del(struct dsa_switch * ds,int port,const struct switchdev_obj_port_mdb * mdb,struct dsa_db db)2138 int b53_mdb_del(struct dsa_switch *ds, int port,
2139 const struct switchdev_obj_port_mdb *mdb,
2140 struct dsa_db db)
2141 {
2142 struct b53_device *priv = ds->priv;
2143 int ret;
2144
2145 mutex_lock(&priv->arl_mutex);
2146 ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false);
2147 mutex_unlock(&priv->arl_mutex);
2148 if (ret)
2149 dev_err(ds->dev, "failed to delete MDB entry\n");
2150
2151 return ret;
2152 }
2153 EXPORT_SYMBOL(b53_mdb_del);
2154
b53_br_join(struct dsa_switch * ds,int port,struct dsa_bridge bridge,bool * tx_fwd_offload,struct netlink_ext_ack * extack)2155 int b53_br_join(struct dsa_switch *ds, int port, struct dsa_bridge bridge,
2156 bool *tx_fwd_offload, struct netlink_ext_ack *extack)
2157 {
2158 struct b53_device *dev = ds->priv;
2159 struct b53_vlan *vl;
2160 s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
2161 u16 pvlan, reg, pvid;
2162 unsigned int i;
2163
2164 /* On 7278, port 7 which connects to the ASP should only receive
2165 * traffic from matching CFP rules.
2166 */
2167 if (dev->chip_id == BCM7278_DEVICE_ID && port == 7)
2168 return -EINVAL;
2169
2170 pvid = b53_default_pvid(dev);
2171 vl = &dev->vlans[pvid];
2172
2173 if (dev->vlan_filtering) {
2174 /* Make this port leave the all VLANs join since we will have
2175 * proper VLAN entries from now on
2176 */
2177 if (is58xx(dev)) {
2178 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN,
2179 ®);
2180 reg &= ~BIT(port);
2181 if ((reg & BIT(cpu_port)) == BIT(cpu_port))
2182 reg &= ~BIT(cpu_port);
2183 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN,
2184 reg);
2185 }
2186
2187 b53_get_vlan_entry(dev, pvid, vl);
2188 vl->members &= ~BIT(port);
2189 b53_set_vlan_entry(dev, pvid, vl);
2190 }
2191
2192 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
2193
2194 b53_for_each_port(dev, i) {
2195 if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
2196 continue;
2197
2198 /* Add this local port to the remote port VLAN control
2199 * membership and update the remote port bitmask
2200 */
2201 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), ®);
2202 reg |= BIT(port);
2203 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
2204 dev->ports[i].vlan_ctl_mask = reg;
2205
2206 pvlan |= BIT(i);
2207 }
2208
2209 /* Disable redirection of unknown SA to the CPU port */
2210 b53_set_eap_mode(dev, port, EAP_MODE_BASIC);
2211
2212 /* Configure the local port VLAN control membership to include
2213 * remote ports and update the local port bitmask
2214 */
2215 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
2216 dev->ports[port].vlan_ctl_mask = pvlan;
2217
2218 return 0;
2219 }
2220 EXPORT_SYMBOL(b53_br_join);
2221
b53_br_leave(struct dsa_switch * ds,int port,struct dsa_bridge bridge)2222 void b53_br_leave(struct dsa_switch *ds, int port, struct dsa_bridge bridge)
2223 {
2224 struct b53_device *dev = ds->priv;
2225 struct b53_vlan *vl;
2226 s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
2227 unsigned int i;
2228 u16 pvlan, reg, pvid;
2229
2230 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
2231
2232 b53_for_each_port(dev, i) {
2233 /* Don't touch the remaining ports */
2234 if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
2235 continue;
2236
2237 b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), ®);
2238 reg &= ~BIT(port);
2239 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), reg);
2240 dev->ports[port].vlan_ctl_mask = reg;
2241
2242 /* Prevent self removal to preserve isolation */
2243 if (port != i)
2244 pvlan &= ~BIT(i);
2245 }
2246
2247 /* Enable redirection of unknown SA to the CPU port */
2248 b53_set_eap_mode(dev, port, EAP_MODE_SIMPLIFIED);
2249
2250 b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
2251 dev->ports[port].vlan_ctl_mask = pvlan;
2252
2253 pvid = b53_default_pvid(dev);
2254 vl = &dev->vlans[pvid];
2255
2256 if (dev->vlan_filtering) {
2257 /* Make this port join all VLANs without VLAN entries */
2258 if (is58xx(dev)) {
2259 b53_read16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, ®);
2260 reg |= BIT(port);
2261 if (!(reg & BIT(cpu_port)))
2262 reg |= BIT(cpu_port);
2263 b53_write16(dev, B53_VLAN_PAGE, B53_JOIN_ALL_VLAN_EN, reg);
2264 }
2265
2266 b53_get_vlan_entry(dev, pvid, vl);
2267 vl->members |= BIT(port);
2268 b53_set_vlan_entry(dev, pvid, vl);
2269 }
2270 }
2271 EXPORT_SYMBOL(b53_br_leave);
2272
b53_br_set_stp_state(struct dsa_switch * ds,int port,u8 state)2273 void b53_br_set_stp_state(struct dsa_switch *ds, int port, u8 state)
2274 {
2275 struct b53_device *dev = ds->priv;
2276 u8 hw_state;
2277 u8 reg;
2278
2279 switch (state) {
2280 case BR_STATE_DISABLED:
2281 hw_state = PORT_CTRL_DIS_STATE;
2282 break;
2283 case BR_STATE_LISTENING:
2284 hw_state = PORT_CTRL_LISTEN_STATE;
2285 break;
2286 case BR_STATE_LEARNING:
2287 hw_state = PORT_CTRL_LEARN_STATE;
2288 break;
2289 case BR_STATE_FORWARDING:
2290 hw_state = PORT_CTRL_FWD_STATE;
2291 break;
2292 case BR_STATE_BLOCKING:
2293 hw_state = PORT_CTRL_BLOCK_STATE;
2294 break;
2295 default:
2296 dev_err(ds->dev, "invalid STP state: %d\n", state);
2297 return;
2298 }
2299
2300 b53_read8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), ®);
2301 reg &= ~PORT_CTRL_STP_STATE_MASK;
2302 reg |= hw_state;
2303 b53_write8(dev, B53_CTRL_PAGE, B53_PORT_CTRL(port), reg);
2304 }
2305 EXPORT_SYMBOL(b53_br_set_stp_state);
2306
b53_br_fast_age(struct dsa_switch * ds,int port)2307 void b53_br_fast_age(struct dsa_switch *ds, int port)
2308 {
2309 struct b53_device *dev = ds->priv;
2310
2311 if (b53_fast_age_port(dev, port))
2312 dev_err(ds->dev, "fast ageing failed\n");
2313 }
2314 EXPORT_SYMBOL(b53_br_fast_age);
2315
b53_br_flags_pre(struct dsa_switch * ds,int port,struct switchdev_brport_flags flags,struct netlink_ext_ack * extack)2316 int b53_br_flags_pre(struct dsa_switch *ds, int port,
2317 struct switchdev_brport_flags flags,
2318 struct netlink_ext_ack *extack)
2319 {
2320 struct b53_device *dev = ds->priv;
2321 unsigned long mask = (BR_FLOOD | BR_MCAST_FLOOD);
2322
2323 if (!is5325(dev))
2324 mask |= BR_LEARNING;
2325
2326 if (flags.mask & ~mask)
2327 return -EINVAL;
2328
2329 return 0;
2330 }
2331 EXPORT_SYMBOL(b53_br_flags_pre);
2332
b53_br_flags(struct dsa_switch * ds,int port,struct switchdev_brport_flags flags,struct netlink_ext_ack * extack)2333 int b53_br_flags(struct dsa_switch *ds, int port,
2334 struct switchdev_brport_flags flags,
2335 struct netlink_ext_ack *extack)
2336 {
2337 if (flags.mask & BR_FLOOD)
2338 b53_port_set_ucast_flood(ds->priv, port,
2339 !!(flags.val & BR_FLOOD));
2340 if (flags.mask & BR_MCAST_FLOOD)
2341 b53_port_set_mcast_flood(ds->priv, port,
2342 !!(flags.val & BR_MCAST_FLOOD));
2343 if (flags.mask & BR_LEARNING)
2344 b53_port_set_learning(ds->priv, port,
2345 !!(flags.val & BR_LEARNING));
2346
2347 return 0;
2348 }
2349 EXPORT_SYMBOL(b53_br_flags);
2350
b53_possible_cpu_port(struct dsa_switch * ds,int port)2351 static bool b53_possible_cpu_port(struct dsa_switch *ds, int port)
2352 {
2353 /* Broadcom switches will accept enabling Broadcom tags on the
2354 * following ports: 5, 7 and 8, any other port is not supported
2355 */
2356 switch (port) {
2357 case B53_CPU_PORT_25:
2358 case 7:
2359 case B53_CPU_PORT:
2360 return true;
2361 }
2362
2363 return false;
2364 }
2365
b53_can_enable_brcm_tags(struct dsa_switch * ds,int port,enum dsa_tag_protocol tag_protocol)2366 static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port,
2367 enum dsa_tag_protocol tag_protocol)
2368 {
2369 bool ret = b53_possible_cpu_port(ds, port);
2370
2371 if (!ret) {
2372 dev_warn(ds->dev, "Port %d is not Broadcom tag capable\n",
2373 port);
2374 return ret;
2375 }
2376
2377 switch (tag_protocol) {
2378 case DSA_TAG_PROTO_BRCM:
2379 case DSA_TAG_PROTO_BRCM_PREPEND:
2380 dev_warn(ds->dev,
2381 "Port %d is stacked to Broadcom tag switch\n", port);
2382 ret = false;
2383 break;
2384 default:
2385 ret = true;
2386 break;
2387 }
2388
2389 return ret;
2390 }
2391
b53_get_tag_protocol(struct dsa_switch * ds,int port,enum dsa_tag_protocol mprot)2392 enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds, int port,
2393 enum dsa_tag_protocol mprot)
2394 {
2395 struct b53_device *dev = ds->priv;
2396
2397 if (!b53_can_enable_brcm_tags(ds, port, mprot)) {
2398 dev->tag_protocol = DSA_TAG_PROTO_NONE;
2399 goto out;
2400 }
2401
2402 /* Older models require different 6 byte tags */
2403 if (is5325(dev) || is5365(dev)) {
2404 dev->tag_protocol = DSA_TAG_PROTO_BRCM_LEGACY_FCS;
2405 goto out;
2406 } else if (is63xx(dev)) {
2407 dev->tag_protocol = DSA_TAG_PROTO_BRCM_LEGACY;
2408 goto out;
2409 }
2410
2411 /* Broadcom BCM58xx chips have a flow accelerator on Port 8
2412 * which requires us to use the prepended Broadcom tag type
2413 */
2414 if (dev->chip_id == BCM58XX_DEVICE_ID && port == B53_CPU_PORT) {
2415 dev->tag_protocol = DSA_TAG_PROTO_BRCM_PREPEND;
2416 goto out;
2417 }
2418
2419 dev->tag_protocol = DSA_TAG_PROTO_BRCM;
2420 out:
2421 return dev->tag_protocol;
2422 }
2423 EXPORT_SYMBOL(b53_get_tag_protocol);
2424
b53_mirror_add(struct dsa_switch * ds,int port,struct dsa_mall_mirror_tc_entry * mirror,bool ingress,struct netlink_ext_ack * extack)2425 int b53_mirror_add(struct dsa_switch *ds, int port,
2426 struct dsa_mall_mirror_tc_entry *mirror, bool ingress,
2427 struct netlink_ext_ack *extack)
2428 {
2429 struct b53_device *dev = ds->priv;
2430 u16 reg, loc;
2431
2432 if (ingress)
2433 loc = B53_IG_MIR_CTL;
2434 else
2435 loc = B53_EG_MIR_CTL;
2436
2437 b53_read16(dev, B53_MGMT_PAGE, loc, ®);
2438 reg |= BIT(port);
2439 b53_write16(dev, B53_MGMT_PAGE, loc, reg);
2440
2441 b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, ®);
2442 reg &= ~CAP_PORT_MASK;
2443 reg |= mirror->to_local_port;
2444 reg |= MIRROR_EN;
2445 b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
2446
2447 return 0;
2448 }
2449 EXPORT_SYMBOL(b53_mirror_add);
2450
b53_mirror_del(struct dsa_switch * ds,int port,struct dsa_mall_mirror_tc_entry * mirror)2451 void b53_mirror_del(struct dsa_switch *ds, int port,
2452 struct dsa_mall_mirror_tc_entry *mirror)
2453 {
2454 struct b53_device *dev = ds->priv;
2455 bool loc_disable = false, other_loc_disable = false;
2456 u16 reg, loc;
2457
2458 if (mirror->ingress)
2459 loc = B53_IG_MIR_CTL;
2460 else
2461 loc = B53_EG_MIR_CTL;
2462
2463 /* Update the desired ingress/egress register */
2464 b53_read16(dev, B53_MGMT_PAGE, loc, ®);
2465 reg &= ~BIT(port);
2466 if (!(reg & MIRROR_MASK))
2467 loc_disable = true;
2468 b53_write16(dev, B53_MGMT_PAGE, loc, reg);
2469
2470 /* Now look at the other one to know if we can disable mirroring
2471 * entirely
2472 */
2473 if (mirror->ingress)
2474 b53_read16(dev, B53_MGMT_PAGE, B53_EG_MIR_CTL, ®);
2475 else
2476 b53_read16(dev, B53_MGMT_PAGE, B53_IG_MIR_CTL, ®);
2477 if (!(reg & MIRROR_MASK))
2478 other_loc_disable = true;
2479
2480 b53_read16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, ®);
2481 /* Both no longer have ports, let's disable mirroring */
2482 if (loc_disable && other_loc_disable) {
2483 reg &= ~MIRROR_EN;
2484 reg &= ~mirror->to_local_port;
2485 }
2486 b53_write16(dev, B53_MGMT_PAGE, B53_MIR_CAP_CTL, reg);
2487 }
2488 EXPORT_SYMBOL(b53_mirror_del);
2489
2490 /* Returns 0 if EEE was not enabled, or 1 otherwise
2491 */
b53_eee_init(struct dsa_switch * ds,int port,struct phy_device * phy)2492 int b53_eee_init(struct dsa_switch *ds, int port, struct phy_device *phy)
2493 {
2494 int ret;
2495
2496 if (!b53_support_eee(ds, port))
2497 return 0;
2498
2499 ret = phy_init_eee(phy, false);
2500 if (ret)
2501 return 0;
2502
2503 b53_eee_enable_set(ds, port, true);
2504
2505 return 1;
2506 }
2507 EXPORT_SYMBOL(b53_eee_init);
2508
b53_support_eee(struct dsa_switch * ds,int port)2509 bool b53_support_eee(struct dsa_switch *ds, int port)
2510 {
2511 struct b53_device *dev = ds->priv;
2512
2513 return !is5325(dev) && !is5365(dev) && !is63xx(dev);
2514 }
2515 EXPORT_SYMBOL(b53_support_eee);
2516
b53_set_mac_eee(struct dsa_switch * ds,int port,struct ethtool_keee * e)2517 int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e)
2518 {
2519 struct b53_device *dev = ds->priv;
2520 struct ethtool_keee *p = &dev->ports[port].eee;
2521
2522 p->eee_enabled = e->eee_enabled;
2523 b53_eee_enable_set(ds, port, e->eee_enabled);
2524
2525 return 0;
2526 }
2527 EXPORT_SYMBOL(b53_set_mac_eee);
2528
b53_change_mtu(struct dsa_switch * ds,int port,int mtu)2529 static int b53_change_mtu(struct dsa_switch *ds, int port, int mtu)
2530 {
2531 struct b53_device *dev = ds->priv;
2532 bool enable_jumbo;
2533 bool allow_10_100;
2534
2535 if (is5325(dev) || is5365(dev))
2536 return 0;
2537
2538 if (!dsa_is_cpu_port(ds, port))
2539 return 0;
2540
2541 enable_jumbo = (mtu > ETH_DATA_LEN);
2542 allow_10_100 = !is63xx(dev);
2543
2544 return b53_set_jumbo(dev, enable_jumbo, allow_10_100);
2545 }
2546
b53_get_max_mtu(struct dsa_switch * ds,int port)2547 static int b53_get_max_mtu(struct dsa_switch *ds, int port)
2548 {
2549 struct b53_device *dev = ds->priv;
2550
2551 if (is5325(dev) || is5365(dev))
2552 return B53_MAX_MTU_25;
2553
2554 return B53_MAX_MTU;
2555 }
2556
b53_set_ageing_time(struct dsa_switch * ds,unsigned int msecs)2557 int b53_set_ageing_time(struct dsa_switch *ds, unsigned int msecs)
2558 {
2559 struct b53_device *dev = ds->priv;
2560 u32 atc;
2561 int reg;
2562
2563 if (is63xx(dev))
2564 reg = B53_AGING_TIME_CONTROL_63XX;
2565 else
2566 reg = B53_AGING_TIME_CONTROL;
2567
2568 if (dev->chip_id == BCM53101_DEVICE_ID)
2569 atc = DIV_ROUND_CLOSEST(msecs, 500);
2570 else
2571 atc = DIV_ROUND_CLOSEST(msecs, 1000);
2572
2573 if (!is5325(dev) && !is5365(dev))
2574 atc |= AGE_CHANGE;
2575
2576 b53_write32(dev, B53_MGMT_PAGE, reg, atc);
2577
2578 return 0;
2579 }
2580 EXPORT_SYMBOL_GPL(b53_set_ageing_time);
2581
2582 static const struct phylink_mac_ops b53_phylink_mac_ops = {
2583 .mac_select_pcs = b53_phylink_mac_select_pcs,
2584 .mac_config = b53_phylink_mac_config,
2585 .mac_link_down = b53_phylink_mac_link_down,
2586 .mac_link_up = b53_phylink_mac_link_up,
2587 };
2588
2589 static const struct dsa_switch_ops b53_switch_ops = {
2590 .get_tag_protocol = b53_get_tag_protocol,
2591 .setup = b53_setup,
2592 .teardown = b53_teardown,
2593 .get_strings = b53_get_strings,
2594 .get_ethtool_stats = b53_get_ethtool_stats,
2595 .get_sset_count = b53_get_sset_count,
2596 .get_ethtool_phy_stats = b53_get_ethtool_phy_stats,
2597 .phy_read = b53_phy_read16,
2598 .phy_write = b53_phy_write16,
2599 .phylink_get_caps = b53_phylink_get_caps,
2600 .port_setup = b53_setup_port,
2601 .port_enable = b53_enable_port,
2602 .port_disable = b53_disable_port,
2603 .support_eee = b53_support_eee,
2604 .set_mac_eee = b53_set_mac_eee,
2605 .set_ageing_time = b53_set_ageing_time,
2606 .port_bridge_join = b53_br_join,
2607 .port_bridge_leave = b53_br_leave,
2608 .port_pre_bridge_flags = b53_br_flags_pre,
2609 .port_bridge_flags = b53_br_flags,
2610 .port_stp_state_set = b53_br_set_stp_state,
2611 .port_fast_age = b53_br_fast_age,
2612 .port_vlan_filtering = b53_vlan_filtering,
2613 .port_vlan_add = b53_vlan_add,
2614 .port_vlan_del = b53_vlan_del,
2615 .port_fdb_dump = b53_fdb_dump,
2616 .port_fdb_add = b53_fdb_add,
2617 .port_fdb_del = b53_fdb_del,
2618 .port_mirror_add = b53_mirror_add,
2619 .port_mirror_del = b53_mirror_del,
2620 .port_mdb_add = b53_mdb_add,
2621 .port_mdb_del = b53_mdb_del,
2622 .port_max_mtu = b53_get_max_mtu,
2623 .port_change_mtu = b53_change_mtu,
2624 };
2625
2626 struct b53_chip_data {
2627 u32 chip_id;
2628 const char *dev_name;
2629 u16 vlans;
2630 u16 enabled_ports;
2631 u8 imp_port;
2632 u8 cpu_port;
2633 u8 vta_regs[3];
2634 u8 arl_bins;
2635 u16 arl_buckets;
2636 u8 duplex_reg;
2637 u8 jumbo_pm_reg;
2638 u8 jumbo_size_reg;
2639 };
2640
2641 #define B53_VTA_REGS \
2642 { B53_VT_ACCESS, B53_VT_INDEX, B53_VT_ENTRY }
2643 #define B53_VTA_REGS_9798 \
2644 { B53_VT_ACCESS_9798, B53_VT_INDEX_9798, B53_VT_ENTRY_9798 }
2645 #define B53_VTA_REGS_63XX \
2646 { B53_VT_ACCESS_63XX, B53_VT_INDEX_63XX, B53_VT_ENTRY_63XX }
2647
2648 static const struct b53_chip_data b53_switch_chips[] = {
2649 {
2650 .chip_id = BCM5325_DEVICE_ID,
2651 .dev_name = "BCM5325",
2652 .vlans = 16,
2653 .enabled_ports = 0x3f,
2654 .arl_bins = 2,
2655 .arl_buckets = 1024,
2656 .imp_port = 5,
2657 .duplex_reg = B53_DUPLEX_STAT_FE,
2658 },
2659 {
2660 .chip_id = BCM5365_DEVICE_ID,
2661 .dev_name = "BCM5365",
2662 .vlans = 256,
2663 .enabled_ports = 0x3f,
2664 .arl_bins = 2,
2665 .arl_buckets = 1024,
2666 .imp_port = 5,
2667 .duplex_reg = B53_DUPLEX_STAT_FE,
2668 },
2669 {
2670 .chip_id = BCM5389_DEVICE_ID,
2671 .dev_name = "BCM5389",
2672 .vlans = 4096,
2673 .enabled_ports = 0x11f,
2674 .arl_bins = 4,
2675 .arl_buckets = 1024,
2676 .imp_port = 8,
2677 .vta_regs = B53_VTA_REGS,
2678 .duplex_reg = B53_DUPLEX_STAT_GE,
2679 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2680 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2681 },
2682 {
2683 .chip_id = BCM5395_DEVICE_ID,
2684 .dev_name = "BCM5395",
2685 .vlans = 4096,
2686 .enabled_ports = 0x11f,
2687 .arl_bins = 4,
2688 .arl_buckets = 1024,
2689 .imp_port = 8,
2690 .vta_regs = B53_VTA_REGS,
2691 .duplex_reg = B53_DUPLEX_STAT_GE,
2692 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2693 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2694 },
2695 {
2696 .chip_id = BCM5397_DEVICE_ID,
2697 .dev_name = "BCM5397",
2698 .vlans = 4096,
2699 .enabled_ports = 0x11f,
2700 .arl_bins = 4,
2701 .arl_buckets = 1024,
2702 .imp_port = 8,
2703 .vta_regs = B53_VTA_REGS_9798,
2704 .duplex_reg = B53_DUPLEX_STAT_GE,
2705 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2706 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2707 },
2708 {
2709 .chip_id = BCM5398_DEVICE_ID,
2710 .dev_name = "BCM5398",
2711 .vlans = 4096,
2712 .enabled_ports = 0x17f,
2713 .arl_bins = 4,
2714 .arl_buckets = 1024,
2715 .imp_port = 8,
2716 .vta_regs = B53_VTA_REGS_9798,
2717 .duplex_reg = B53_DUPLEX_STAT_GE,
2718 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2719 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2720 },
2721 {
2722 .chip_id = BCM53101_DEVICE_ID,
2723 .dev_name = "BCM53101",
2724 .vlans = 4096,
2725 .enabled_ports = 0x11f,
2726 .arl_bins = 4,
2727 .arl_buckets = 512,
2728 .vta_regs = B53_VTA_REGS,
2729 .imp_port = 8,
2730 .duplex_reg = B53_DUPLEX_STAT_GE,
2731 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2732 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2733 },
2734 {
2735 .chip_id = BCM53115_DEVICE_ID,
2736 .dev_name = "BCM53115",
2737 .vlans = 4096,
2738 .enabled_ports = 0x11f,
2739 .arl_bins = 4,
2740 .arl_buckets = 1024,
2741 .vta_regs = B53_VTA_REGS,
2742 .imp_port = 8,
2743 .duplex_reg = B53_DUPLEX_STAT_GE,
2744 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2745 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2746 },
2747 {
2748 .chip_id = BCM53125_DEVICE_ID,
2749 .dev_name = "BCM53125",
2750 .vlans = 4096,
2751 .enabled_ports = 0x1ff,
2752 .arl_bins = 4,
2753 .arl_buckets = 1024,
2754 .imp_port = 8,
2755 .vta_regs = B53_VTA_REGS,
2756 .duplex_reg = B53_DUPLEX_STAT_GE,
2757 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2758 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2759 },
2760 {
2761 .chip_id = BCM53128_DEVICE_ID,
2762 .dev_name = "BCM53128",
2763 .vlans = 4096,
2764 .enabled_ports = 0x1ff,
2765 .arl_bins = 4,
2766 .arl_buckets = 1024,
2767 .imp_port = 8,
2768 .vta_regs = B53_VTA_REGS,
2769 .duplex_reg = B53_DUPLEX_STAT_GE,
2770 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2771 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2772 },
2773 {
2774 .chip_id = BCM63XX_DEVICE_ID,
2775 .dev_name = "BCM63xx",
2776 .vlans = 4096,
2777 .enabled_ports = 0, /* pdata must provide them */
2778 .arl_bins = 4,
2779 .arl_buckets = 1024,
2780 .imp_port = 8,
2781 .vta_regs = B53_VTA_REGS_63XX,
2782 .duplex_reg = B53_DUPLEX_STAT_63XX,
2783 .jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
2784 .jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
2785 },
2786 {
2787 .chip_id = BCM53010_DEVICE_ID,
2788 .dev_name = "BCM53010",
2789 .vlans = 4096,
2790 .enabled_ports = 0x1bf,
2791 .arl_bins = 4,
2792 .arl_buckets = 1024,
2793 .imp_port = 8,
2794 .vta_regs = B53_VTA_REGS,
2795 .duplex_reg = B53_DUPLEX_STAT_GE,
2796 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2797 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2798 },
2799 {
2800 .chip_id = BCM53011_DEVICE_ID,
2801 .dev_name = "BCM53011",
2802 .vlans = 4096,
2803 .enabled_ports = 0x1bf,
2804 .arl_bins = 4,
2805 .arl_buckets = 1024,
2806 .imp_port = 8,
2807 .vta_regs = B53_VTA_REGS,
2808 .duplex_reg = B53_DUPLEX_STAT_GE,
2809 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2810 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2811 },
2812 {
2813 .chip_id = BCM53012_DEVICE_ID,
2814 .dev_name = "BCM53012",
2815 .vlans = 4096,
2816 .enabled_ports = 0x1bf,
2817 .arl_bins = 4,
2818 .arl_buckets = 1024,
2819 .imp_port = 8,
2820 .vta_regs = B53_VTA_REGS,
2821 .duplex_reg = B53_DUPLEX_STAT_GE,
2822 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2823 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2824 },
2825 {
2826 .chip_id = BCM53018_DEVICE_ID,
2827 .dev_name = "BCM53018",
2828 .vlans = 4096,
2829 .enabled_ports = 0x1bf,
2830 .arl_bins = 4,
2831 .arl_buckets = 1024,
2832 .imp_port = 8,
2833 .vta_regs = B53_VTA_REGS,
2834 .duplex_reg = B53_DUPLEX_STAT_GE,
2835 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2836 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2837 },
2838 {
2839 .chip_id = BCM53019_DEVICE_ID,
2840 .dev_name = "BCM53019",
2841 .vlans = 4096,
2842 .enabled_ports = 0x1bf,
2843 .arl_bins = 4,
2844 .arl_buckets = 1024,
2845 .imp_port = 8,
2846 .vta_regs = B53_VTA_REGS,
2847 .duplex_reg = B53_DUPLEX_STAT_GE,
2848 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2849 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2850 },
2851 {
2852 .chip_id = BCM58XX_DEVICE_ID,
2853 .dev_name = "BCM585xx/586xx/88312",
2854 .vlans = 4096,
2855 .enabled_ports = 0x1ff,
2856 .arl_bins = 4,
2857 .arl_buckets = 1024,
2858 .imp_port = 8,
2859 .vta_regs = B53_VTA_REGS,
2860 .duplex_reg = B53_DUPLEX_STAT_GE,
2861 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2862 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2863 },
2864 {
2865 .chip_id = BCM583XX_DEVICE_ID,
2866 .dev_name = "BCM583xx/11360",
2867 .vlans = 4096,
2868 .enabled_ports = 0x103,
2869 .arl_bins = 4,
2870 .arl_buckets = 1024,
2871 .imp_port = 8,
2872 .vta_regs = B53_VTA_REGS,
2873 .duplex_reg = B53_DUPLEX_STAT_GE,
2874 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2875 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2876 },
2877 /* Starfighter 2 */
2878 {
2879 .chip_id = BCM4908_DEVICE_ID,
2880 .dev_name = "BCM4908",
2881 .vlans = 4096,
2882 .enabled_ports = 0x1bf,
2883 .arl_bins = 4,
2884 .arl_buckets = 256,
2885 .imp_port = 8,
2886 .vta_regs = B53_VTA_REGS,
2887 .duplex_reg = B53_DUPLEX_STAT_GE,
2888 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2889 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2890 },
2891 {
2892 .chip_id = BCM7445_DEVICE_ID,
2893 .dev_name = "BCM7445",
2894 .vlans = 4096,
2895 .enabled_ports = 0x1ff,
2896 .arl_bins = 4,
2897 .arl_buckets = 1024,
2898 .imp_port = 8,
2899 .vta_regs = B53_VTA_REGS,
2900 .duplex_reg = B53_DUPLEX_STAT_GE,
2901 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2902 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2903 },
2904 {
2905 .chip_id = BCM7278_DEVICE_ID,
2906 .dev_name = "BCM7278",
2907 .vlans = 4096,
2908 .enabled_ports = 0x1ff,
2909 .arl_bins = 4,
2910 .arl_buckets = 256,
2911 .imp_port = 8,
2912 .vta_regs = B53_VTA_REGS,
2913 .duplex_reg = B53_DUPLEX_STAT_GE,
2914 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2915 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2916 },
2917 {
2918 .chip_id = BCM53134_DEVICE_ID,
2919 .dev_name = "BCM53134",
2920 .vlans = 4096,
2921 .enabled_ports = 0x12f,
2922 .imp_port = 8,
2923 .cpu_port = B53_CPU_PORT,
2924 .vta_regs = B53_VTA_REGS,
2925 .arl_bins = 4,
2926 .arl_buckets = 1024,
2927 .duplex_reg = B53_DUPLEX_STAT_GE,
2928 .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
2929 .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
2930 },
2931 };
2932
b53_switch_init(struct b53_device * dev)2933 static int b53_switch_init(struct b53_device *dev)
2934 {
2935 u32 chip_id = dev->chip_id;
2936 unsigned int i;
2937 int ret;
2938
2939 if (is63xx(dev))
2940 chip_id = BCM63XX_DEVICE_ID;
2941
2942 for (i = 0; i < ARRAY_SIZE(b53_switch_chips); i++) {
2943 const struct b53_chip_data *chip = &b53_switch_chips[i];
2944
2945 if (chip->chip_id == chip_id) {
2946 if (!dev->enabled_ports)
2947 dev->enabled_ports = chip->enabled_ports;
2948 dev->name = chip->dev_name;
2949 dev->duplex_reg = chip->duplex_reg;
2950 dev->vta_regs[0] = chip->vta_regs[0];
2951 dev->vta_regs[1] = chip->vta_regs[1];
2952 dev->vta_regs[2] = chip->vta_regs[2];
2953 dev->jumbo_pm_reg = chip->jumbo_pm_reg;
2954 dev->imp_port = chip->imp_port;
2955 dev->num_vlans = chip->vlans;
2956 dev->num_arl_bins = chip->arl_bins;
2957 dev->num_arl_buckets = chip->arl_buckets;
2958 break;
2959 }
2960 }
2961
2962 /* check which BCM5325x version we have */
2963 if (is5325(dev)) {
2964 u8 vc4;
2965
2966 b53_read8(dev, B53_VLAN_PAGE, B53_VLAN_CTRL4_25, &vc4);
2967
2968 /* check reserved bits */
2969 switch (vc4 & 3) {
2970 case 1:
2971 /* BCM5325E */
2972 break;
2973 case 3:
2974 /* BCM5325F - do not use port 4 */
2975 dev->enabled_ports &= ~BIT(4);
2976 break;
2977 default:
2978 /* On the BCM47XX SoCs this is the supported internal switch.*/
2979 #ifndef CONFIG_BCM47XX
2980 /* BCM5325M */
2981 return -EINVAL;
2982 #else
2983 break;
2984 #endif
2985 }
2986 }
2987
2988 if (is5325e(dev))
2989 dev->num_arl_buckets = 512;
2990
2991 dev->num_ports = fls(dev->enabled_ports);
2992
2993 dev->ds->num_ports = min_t(unsigned int, dev->num_ports, DSA_MAX_PORTS);
2994
2995 /* Include non standard CPU port built-in PHYs to be probed */
2996 if (is539x(dev) || is531x5(dev)) {
2997 for (i = 0; i < dev->num_ports; i++) {
2998 if (!(dev->ds->phys_mii_mask & BIT(i)) &&
2999 !b53_possible_cpu_port(dev->ds, i))
3000 dev->ds->phys_mii_mask |= BIT(i);
3001 }
3002 }
3003
3004 dev->ports = devm_kcalloc(dev->dev,
3005 dev->num_ports, sizeof(struct b53_port),
3006 GFP_KERNEL);
3007 if (!dev->ports)
3008 return -ENOMEM;
3009
3010 dev->vlans = devm_kcalloc(dev->dev,
3011 dev->num_vlans, sizeof(struct b53_vlan),
3012 GFP_KERNEL);
3013 if (!dev->vlans)
3014 return -ENOMEM;
3015
3016 dev->reset_gpio = b53_switch_get_reset_gpio(dev);
3017 if (dev->reset_gpio >= 0) {
3018 ret = devm_gpio_request_one(dev->dev, dev->reset_gpio,
3019 GPIOF_OUT_INIT_HIGH, "robo_reset");
3020 if (ret)
3021 return ret;
3022 }
3023
3024 return 0;
3025 }
3026
b53_switch_alloc(struct device * base,const struct b53_io_ops * ops,void * priv)3027 struct b53_device *b53_switch_alloc(struct device *base,
3028 const struct b53_io_ops *ops,
3029 void *priv)
3030 {
3031 struct dsa_switch *ds;
3032 struct b53_device *dev;
3033
3034 ds = devm_kzalloc(base, sizeof(*ds), GFP_KERNEL);
3035 if (!ds)
3036 return NULL;
3037
3038 ds->dev = base;
3039
3040 dev = devm_kzalloc(base, sizeof(*dev), GFP_KERNEL);
3041 if (!dev)
3042 return NULL;
3043
3044 ds->priv = dev;
3045 dev->dev = base;
3046
3047 dev->ds = ds;
3048 dev->priv = priv;
3049 dev->ops = ops;
3050 ds->ops = &b53_switch_ops;
3051 ds->phylink_mac_ops = &b53_phylink_mac_ops;
3052 dev->vlan_enabled = true;
3053 dev->vlan_filtering = false;
3054 /* Let DSA handle the case were multiple bridges span the same switch
3055 * device and different VLAN awareness settings are requested, which
3056 * would be breaking filtering semantics for any of the other bridge
3057 * devices. (not hardware supported)
3058 */
3059 ds->vlan_filtering_is_global = true;
3060
3061 mutex_init(&dev->reg_mutex);
3062 mutex_init(&dev->stats_mutex);
3063 mutex_init(&dev->arl_mutex);
3064
3065 return dev;
3066 }
3067 EXPORT_SYMBOL(b53_switch_alloc);
3068
b53_switch_detect(struct b53_device * dev)3069 int b53_switch_detect(struct b53_device *dev)
3070 {
3071 u32 id32;
3072 u16 tmp;
3073 u8 id8;
3074 int ret;
3075
3076 ret = b53_read8(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id8);
3077 if (ret)
3078 return ret;
3079
3080 switch (id8) {
3081 case 0:
3082 /* BCM5325 and BCM5365 do not have this register so reads
3083 * return 0. But the read operation did succeed, so assume this
3084 * is one of them.
3085 *
3086 * Next check if we can write to the 5325's VTA register; for
3087 * 5365 it is read only.
3088 */
3089 b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
3090 b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
3091
3092 if (tmp == 0xf) {
3093 u32 phy_id;
3094 int val;
3095
3096 dev->chip_id = BCM5325_DEVICE_ID;
3097
3098 val = b53_phy_read16(dev->ds, 0, MII_PHYSID1);
3099 phy_id = (val & 0xffff) << 16;
3100 val = b53_phy_read16(dev->ds, 0, MII_PHYSID2);
3101 phy_id |= (val & 0xfff0);
3102
3103 if (phy_id == 0x00406330)
3104 dev->variant_id = B53_VARIANT_5325M;
3105 else if (phy_id == 0x0143bc30)
3106 dev->variant_id = B53_VARIANT_5325E;
3107 } else {
3108 dev->chip_id = BCM5365_DEVICE_ID;
3109 }
3110 break;
3111 case BCM5389_DEVICE_ID:
3112 case BCM5395_DEVICE_ID:
3113 case BCM5397_DEVICE_ID:
3114 case BCM5398_DEVICE_ID:
3115 dev->chip_id = id8;
3116 break;
3117 default:
3118 ret = b53_read32(dev, B53_MGMT_PAGE, B53_DEVICE_ID, &id32);
3119 if (ret)
3120 return ret;
3121
3122 switch (id32) {
3123 case BCM53101_DEVICE_ID:
3124 case BCM53115_DEVICE_ID:
3125 case BCM53125_DEVICE_ID:
3126 case BCM53128_DEVICE_ID:
3127 case BCM53010_DEVICE_ID:
3128 case BCM53011_DEVICE_ID:
3129 case BCM53012_DEVICE_ID:
3130 case BCM53018_DEVICE_ID:
3131 case BCM53019_DEVICE_ID:
3132 case BCM53134_DEVICE_ID:
3133 dev->chip_id = id32;
3134 break;
3135 default:
3136 dev_err(dev->dev,
3137 "unsupported switch detected (BCM53%02x/BCM%x)\n",
3138 id8, id32);
3139 return -ENODEV;
3140 }
3141 }
3142
3143 if (dev->chip_id == BCM5325_DEVICE_ID)
3144 return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
3145 &dev->core_rev);
3146 else
3147 return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
3148 &dev->core_rev);
3149 }
3150 EXPORT_SYMBOL(b53_switch_detect);
3151
b53_switch_register(struct b53_device * dev)3152 int b53_switch_register(struct b53_device *dev)
3153 {
3154 int ret;
3155
3156 if (dev->pdata) {
3157 dev->chip_id = dev->pdata->chip_id;
3158 dev->enabled_ports = dev->pdata->enabled_ports;
3159 }
3160
3161 if (!dev->chip_id && b53_switch_detect(dev))
3162 return -EINVAL;
3163
3164 ret = b53_switch_init(dev);
3165 if (ret)
3166 return ret;
3167
3168 dev_info(dev->dev, "found switch: %s, rev %i\n",
3169 dev->name, dev->core_rev);
3170
3171 return dsa_register_switch(dev->ds);
3172 }
3173 EXPORT_SYMBOL(b53_switch_register);
3174
3175 MODULE_AUTHOR("Jonas Gorski <jogo@openwrt.org>");
3176 MODULE_DESCRIPTION("B53 switch library");
3177 MODULE_LICENSE("Dual BSD/GPL");
3178