1 // SPDX-License-Identifier: GPL-2.0
2 /* Marvell OcteonTx2 CGX driver
3 *
4 * Copyright (C) 2018 Marvell.
5 *
6 */
7
8 #include <linux/acpi.h>
9 #include <linux/module.h>
10 #include <linux/interrupt.h>
11 #include <linux/pci.h>
12 #include <linux/netdevice.h>
13 #include <linux/etherdevice.h>
14 #include <linux/ethtool.h>
15 #include <linux/phy.h>
16 #include <linux/of.h>
17 #include <linux/of_mdio.h>
18 #include <linux/of_net.h>
19
20 #include "cgx.h"
21 #include "rvu.h"
22 #include "lmac_common.h"
23
24 #define DRV_NAME "Marvell-CGX/RPM"
25 #define DRV_STRING "Marvell CGX/RPM Driver"
26
27 static LIST_HEAD(cgx_list);
28
29 /* Convert firmware speed encoding to user format(Mbps) */
30 static const u32 cgx_speed_mbps[CGX_LINK_SPEED_MAX] = {
31 [CGX_LINK_NONE] = 0,
32 [CGX_LINK_10M] = 10,
33 [CGX_LINK_100M] = 100,
34 [CGX_LINK_1G] = 1000,
35 [CGX_LINK_2HG] = 2500,
36 [CGX_LINK_5G] = 5000,
37 [CGX_LINK_10G] = 10000,
38 [CGX_LINK_20G] = 20000,
39 [CGX_LINK_25G] = 25000,
40 [CGX_LINK_40G] = 40000,
41 [CGX_LINK_50G] = 50000,
42 [CGX_LINK_80G] = 80000,
43 [CGX_LINK_100G] = 100000,
44 };
45
46 /* Convert firmware lmac type encoding to string */
47 static const char *cgx_lmactype_string[LMAC_MODE_MAX] = {
48 [LMAC_MODE_SGMII] = "SGMII",
49 [LMAC_MODE_XAUI] = "XAUI",
50 [LMAC_MODE_RXAUI] = "RXAUI",
51 [LMAC_MODE_10G_R] = "10G_R",
52 [LMAC_MODE_40G_R] = "40G_R",
53 [LMAC_MODE_QSGMII] = "QSGMII",
54 [LMAC_MODE_25G_R] = "25G_R",
55 [LMAC_MODE_50G_R] = "50G_R",
56 [LMAC_MODE_100G_R] = "100G_R",
57 [LMAC_MODE_USXGMII] = "USXGMII",
58 };
59
60 /* CGX PHY management internal APIs */
61 static int cgx_fwi_link_change(struct cgx *cgx, int lmac_id, bool en);
62
63 /* Supported devices */
64 static const struct pci_device_id cgx_id_table[] = {
65 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_CGX) },
66 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_CN10K_RPM) },
67 { 0, } /* end of table */
68 };
69
70 MODULE_DEVICE_TABLE(pci, cgx_id_table);
71
is_dev_rpm(void * cgxd)72 static bool is_dev_rpm(void *cgxd)
73 {
74 struct cgx *cgx = cgxd;
75
76 return (cgx->pdev->device == PCI_DEVID_CN10K_RPM);
77 }
78
is_lmac_valid(struct cgx * cgx,int lmac_id)79 bool is_lmac_valid(struct cgx *cgx, int lmac_id)
80 {
81 if (!cgx || lmac_id < 0 || lmac_id >= MAX_LMAC_PER_CGX)
82 return false;
83 return test_bit(lmac_id, &cgx->lmac_bmap);
84 }
85
86 /* Helper function to get sequential index
87 * given the enabled LMAC of a CGX
88 */
get_sequence_id_of_lmac(struct cgx * cgx,int lmac_id)89 static int get_sequence_id_of_lmac(struct cgx *cgx, int lmac_id)
90 {
91 int tmp, id = 0;
92
93 for_each_set_bit(tmp, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) {
94 if (tmp == lmac_id)
95 break;
96 id++;
97 }
98
99 return id;
100 }
101
get_mac_ops(void * cgxd)102 struct mac_ops *get_mac_ops(void *cgxd)
103 {
104 if (!cgxd)
105 return cgxd;
106
107 return ((struct cgx *)cgxd)->mac_ops;
108 }
109
cgx_write(struct cgx * cgx,u64 lmac,u64 offset,u64 val)110 void cgx_write(struct cgx *cgx, u64 lmac, u64 offset, u64 val)
111 {
112 writeq(val, cgx->reg_base + (lmac << cgx->mac_ops->lmac_offset) +
113 offset);
114 }
115
cgx_read(struct cgx * cgx,u64 lmac,u64 offset)116 u64 cgx_read(struct cgx *cgx, u64 lmac, u64 offset)
117 {
118 return readq(cgx->reg_base + (lmac << cgx->mac_ops->lmac_offset) +
119 offset);
120 }
121
lmac_pdata(u8 lmac_id,struct cgx * cgx)122 struct lmac *lmac_pdata(u8 lmac_id, struct cgx *cgx)
123 {
124 if (!cgx || lmac_id >= MAX_LMAC_PER_CGX)
125 return NULL;
126
127 return cgx->lmac_idmap[lmac_id];
128 }
129
cgx_get_cgxcnt_max(void)130 int cgx_get_cgxcnt_max(void)
131 {
132 struct cgx *cgx_dev;
133 int idmax = -ENODEV;
134
135 list_for_each_entry(cgx_dev, &cgx_list, cgx_list)
136 if (cgx_dev->cgx_id > idmax)
137 idmax = cgx_dev->cgx_id;
138
139 if (idmax < 0)
140 return 0;
141
142 return idmax + 1;
143 }
144
cgx_get_lmac_cnt(void * cgxd)145 int cgx_get_lmac_cnt(void *cgxd)
146 {
147 struct cgx *cgx = cgxd;
148
149 if (!cgx)
150 return -ENODEV;
151
152 return cgx->lmac_count;
153 }
154
cgx_get_pdata(int cgx_id)155 void *cgx_get_pdata(int cgx_id)
156 {
157 struct cgx *cgx_dev;
158
159 list_for_each_entry(cgx_dev, &cgx_list, cgx_list) {
160 if (cgx_dev->cgx_id == cgx_id)
161 return cgx_dev;
162 }
163 return NULL;
164 }
165
cgx_lmac_write(int cgx_id,int lmac_id,u64 offset,u64 val)166 void cgx_lmac_write(int cgx_id, int lmac_id, u64 offset, u64 val)
167 {
168 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
169
170 cgx_write(cgx_dev, lmac_id, offset, val);
171 }
172
cgx_lmac_read(int cgx_id,int lmac_id,u64 offset)173 u64 cgx_lmac_read(int cgx_id, int lmac_id, u64 offset)
174 {
175 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
176
177 return cgx_read(cgx_dev, lmac_id, offset);
178 }
179
cgx_get_cgxid(void * cgxd)180 int cgx_get_cgxid(void *cgxd)
181 {
182 struct cgx *cgx = cgxd;
183
184 if (!cgx)
185 return -EINVAL;
186
187 return cgx->cgx_id;
188 }
189
cgx_lmac_get_p2x(int cgx_id,int lmac_id)190 u8 cgx_lmac_get_p2x(int cgx_id, int lmac_id)
191 {
192 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
193 u64 cfg;
194
195 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_CFG);
196
197 return (cfg & CMR_P2X_SEL_MASK) >> CMR_P2X_SEL_SHIFT;
198 }
199
200 /* Ensure the required lock for event queue(where asynchronous events are
201 * posted) is acquired before calling this API. Else an asynchronous event(with
202 * latest link status) can reach the destination before this function returns
203 * and could make the link status appear wrong.
204 */
cgx_get_link_info(void * cgxd,int lmac_id,struct cgx_link_user_info * linfo)205 int cgx_get_link_info(void *cgxd, int lmac_id,
206 struct cgx_link_user_info *linfo)
207 {
208 struct lmac *lmac = lmac_pdata(lmac_id, cgxd);
209
210 if (!lmac)
211 return -ENODEV;
212
213 *linfo = lmac->link_info;
214 return 0;
215 }
216
mac2u64(u8 * mac_addr)217 static u64 mac2u64 (u8 *mac_addr)
218 {
219 u64 mac = 0;
220 int index;
221
222 for (index = ETH_ALEN - 1; index >= 0; index--)
223 mac |= ((u64)*mac_addr++) << (8 * index);
224 return mac;
225 }
226
cfg2mac(u64 cfg,u8 * mac_addr)227 static void cfg2mac(u64 cfg, u8 *mac_addr)
228 {
229 int i, index = 0;
230
231 for (i = ETH_ALEN - 1; i >= 0; i--, index++)
232 mac_addr[i] = (cfg >> (8 * index)) & 0xFF;
233 }
234
cgx_lmac_addr_set(u8 cgx_id,u8 lmac_id,u8 * mac_addr)235 int cgx_lmac_addr_set(u8 cgx_id, u8 lmac_id, u8 *mac_addr)
236 {
237 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
238 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
239 struct mac_ops *mac_ops;
240 int index, id;
241 u64 cfg;
242
243 /* access mac_ops to know csr_offset */
244 mac_ops = cgx_dev->mac_ops;
245
246 /* copy 6bytes from macaddr */
247 /* memcpy(&cfg, mac_addr, 6); */
248
249 cfg = mac2u64 (mac_addr);
250
251 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
252
253 index = id * lmac->mac_to_index_bmap.max;
254
255 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)),
256 cfg | CGX_DMAC_CAM_ADDR_ENABLE | ((u64)lmac_id << 49));
257
258 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
259 cfg |= (CGX_DMAC_CTL0_CAM_ENABLE | CGX_DMAC_BCAST_MODE |
260 CGX_DMAC_MCAST_MODE);
261 cgx_write(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
262
263 return 0;
264 }
265
cgx_read_dmac_ctrl(void * cgxd,int lmac_id)266 u64 cgx_read_dmac_ctrl(void *cgxd, int lmac_id)
267 {
268 struct mac_ops *mac_ops;
269 struct cgx *cgx = cgxd;
270
271 if (!cgxd || !is_lmac_valid(cgxd, lmac_id))
272 return 0;
273
274 cgx = cgxd;
275 /* Get mac_ops to know csr offset */
276 mac_ops = cgx->mac_ops;
277
278 return cgx_read(cgxd, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
279 }
280
cgx_read_dmac_entry(void * cgxd,int index)281 u64 cgx_read_dmac_entry(void *cgxd, int index)
282 {
283 struct mac_ops *mac_ops;
284 struct cgx *cgx;
285
286 if (!cgxd)
287 return 0;
288
289 cgx = cgxd;
290 mac_ops = cgx->mac_ops;
291 return cgx_read(cgx, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 8)));
292 }
293
cgx_lmac_addr_add(u8 cgx_id,u8 lmac_id,u8 * mac_addr)294 int cgx_lmac_addr_add(u8 cgx_id, u8 lmac_id, u8 *mac_addr)
295 {
296 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
297 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
298 struct mac_ops *mac_ops;
299 int index, idx;
300 u64 cfg = 0;
301 int id;
302
303 if (!lmac)
304 return -ENODEV;
305
306 mac_ops = cgx_dev->mac_ops;
307 /* Get available index where entry is to be installed */
308 idx = rvu_alloc_rsrc(&lmac->mac_to_index_bmap);
309 if (idx < 0)
310 return idx;
311
312 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
313
314 index = id * lmac->mac_to_index_bmap.max + idx;
315
316 cfg = mac2u64 (mac_addr);
317 cfg |= CGX_DMAC_CAM_ADDR_ENABLE;
318 cfg |= ((u64)lmac_id << 49);
319 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)), cfg);
320
321 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
322 cfg |= (CGX_DMAC_BCAST_MODE | CGX_DMAC_CAM_ACCEPT);
323
324 if (is_multicast_ether_addr(mac_addr)) {
325 cfg &= ~GENMASK_ULL(2, 1);
326 cfg |= CGX_DMAC_MCAST_MODE_CAM;
327 lmac->mcast_filters_count++;
328 } else if (!lmac->mcast_filters_count) {
329 cfg |= CGX_DMAC_MCAST_MODE;
330 }
331
332 cgx_write(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
333
334 return idx;
335 }
336
cgx_lmac_addr_reset(u8 cgx_id,u8 lmac_id)337 int cgx_lmac_addr_reset(u8 cgx_id, u8 lmac_id)
338 {
339 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
340 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
341 struct mac_ops *mac_ops;
342 u8 index = 0, id;
343 u64 cfg;
344
345 if (!lmac)
346 return -ENODEV;
347
348 mac_ops = cgx_dev->mac_ops;
349 /* Restore index 0 to its default init value as done during
350 * cgx_lmac_init
351 */
352 set_bit(0, lmac->mac_to_index_bmap.bmap);
353
354 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
355
356 index = id * lmac->mac_to_index_bmap.max + index;
357 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)), 0);
358
359 /* Reset CGXX_CMRX_RX_DMAC_CTL0 register to default state */
360 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
361 cfg &= ~CGX_DMAC_CAM_ACCEPT;
362 cfg |= (CGX_DMAC_BCAST_MODE | CGX_DMAC_MCAST_MODE);
363 cgx_write(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
364
365 return 0;
366 }
367
368 /* Allows caller to change macaddress associated with index
369 * in dmac filter table including index 0 reserved for
370 * interface mac address
371 */
cgx_lmac_addr_update(u8 cgx_id,u8 lmac_id,u8 * mac_addr,u8 index)372 int cgx_lmac_addr_update(u8 cgx_id, u8 lmac_id, u8 *mac_addr, u8 index)
373 {
374 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
375 struct mac_ops *mac_ops;
376 struct lmac *lmac;
377 u64 cfg;
378 int id;
379
380 lmac = lmac_pdata(lmac_id, cgx_dev);
381 if (!lmac)
382 return -ENODEV;
383
384 mac_ops = cgx_dev->mac_ops;
385 /* Validate the index */
386 if (index >= lmac->mac_to_index_bmap.max)
387 return -EINVAL;
388
389 /* ensure index is already set */
390 if (!test_bit(index, lmac->mac_to_index_bmap.bmap))
391 return -EINVAL;
392
393 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
394
395 index = id * lmac->mac_to_index_bmap.max + index;
396
397 cfg = cgx_read(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)));
398 cfg &= ~CGX_RX_DMAC_ADR_MASK;
399 cfg |= mac2u64 (mac_addr);
400
401 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)), cfg);
402 return 0;
403 }
404
cgx_lmac_addr_del(u8 cgx_id,u8 lmac_id,u8 index)405 int cgx_lmac_addr_del(u8 cgx_id, u8 lmac_id, u8 index)
406 {
407 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
408 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
409 struct mac_ops *mac_ops;
410 u8 mac[ETH_ALEN];
411 u64 cfg;
412 int id;
413
414 if (!lmac)
415 return -ENODEV;
416
417 mac_ops = cgx_dev->mac_ops;
418 /* Validate the index */
419 if (index >= lmac->mac_to_index_bmap.max)
420 return -EINVAL;
421
422 /* Skip deletion for reserved index i.e. index 0 */
423 if (index == 0)
424 return 0;
425
426 rvu_free_rsrc(&lmac->mac_to_index_bmap, index);
427
428 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
429
430 index = id * lmac->mac_to_index_bmap.max + index;
431
432 /* Read MAC address to check whether it is ucast or mcast */
433 cfg = cgx_read(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)));
434
435 cfg2mac(cfg, mac);
436 if (is_multicast_ether_addr(mac))
437 lmac->mcast_filters_count--;
438
439 if (!lmac->mcast_filters_count) {
440 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
441 cfg &= ~GENMASK_ULL(2, 1);
442 cfg |= CGX_DMAC_MCAST_MODE;
443 cgx_write(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
444 }
445
446 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)), 0);
447
448 return 0;
449 }
450
cgx_lmac_addr_max_entries_get(u8 cgx_id,u8 lmac_id)451 int cgx_lmac_addr_max_entries_get(u8 cgx_id, u8 lmac_id)
452 {
453 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
454 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
455
456 if (lmac)
457 return lmac->mac_to_index_bmap.max;
458
459 return 0;
460 }
461
cgx_lmac_addr_get(u8 cgx_id,u8 lmac_id)462 u64 cgx_lmac_addr_get(u8 cgx_id, u8 lmac_id)
463 {
464 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
465 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
466 struct mac_ops *mac_ops;
467 int index;
468 u64 cfg;
469 int id;
470
471 mac_ops = cgx_dev->mac_ops;
472
473 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
474
475 index = id * lmac->mac_to_index_bmap.max;
476
477 cfg = cgx_read(cgx_dev, 0, CGXX_CMRX_RX_DMAC_CAM0 + index * 0x8);
478 return cfg & CGX_RX_DMAC_ADR_MASK;
479 }
480
cgx_set_pkind(void * cgxd,u8 lmac_id,int pkind)481 int cgx_set_pkind(void *cgxd, u8 lmac_id, int pkind)
482 {
483 struct cgx *cgx = cgxd;
484
485 if (!is_lmac_valid(cgx, lmac_id))
486 return -ENODEV;
487
488 cgx_write(cgx, lmac_id, CGXX_CMRX_RX_ID_MAP, (pkind & 0x3F));
489 return 0;
490 }
491
cgx_get_lmac_type(void * cgxd,int lmac_id)492 static u8 cgx_get_lmac_type(void *cgxd, int lmac_id)
493 {
494 struct cgx *cgx = cgxd;
495 u64 cfg;
496
497 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_CFG);
498 return (cfg >> CGX_LMAC_TYPE_SHIFT) & CGX_LMAC_TYPE_MASK;
499 }
500
501 /* Configure CGX LMAC in internal loopback mode */
cgx_lmac_internal_loopback(void * cgxd,int lmac_id,bool enable)502 int cgx_lmac_internal_loopback(void *cgxd, int lmac_id, bool enable)
503 {
504 struct cgx *cgx = cgxd;
505 u8 lmac_type;
506 u64 cfg;
507
508 if (!is_lmac_valid(cgx, lmac_id))
509 return -ENODEV;
510
511 lmac_type = cgx->mac_ops->get_lmac_type(cgx, lmac_id);
512 if (lmac_type == LMAC_MODE_SGMII || lmac_type == LMAC_MODE_QSGMII) {
513 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_PCS_MRX_CTL);
514 if (enable)
515 cfg |= CGXX_GMP_PCS_MRX_CTL_LBK;
516 else
517 cfg &= ~CGXX_GMP_PCS_MRX_CTL_LBK;
518 cgx_write(cgx, lmac_id, CGXX_GMP_PCS_MRX_CTL, cfg);
519 } else {
520 cfg = cgx_read(cgx, lmac_id, CGXX_SPUX_CONTROL1);
521 if (enable)
522 cfg |= CGXX_SPUX_CONTROL1_LBK;
523 else
524 cfg &= ~CGXX_SPUX_CONTROL1_LBK;
525 cgx_write(cgx, lmac_id, CGXX_SPUX_CONTROL1, cfg);
526 }
527 return 0;
528 }
529
cgx_lmac_promisc_config(int cgx_id,int lmac_id,bool enable)530 void cgx_lmac_promisc_config(int cgx_id, int lmac_id, bool enable)
531 {
532 struct cgx *cgx = cgx_get_pdata(cgx_id);
533 struct lmac *lmac = lmac_pdata(lmac_id, cgx);
534 u16 max_dmac = lmac->mac_to_index_bmap.max;
535 struct mac_ops *mac_ops;
536 int index, i;
537 u64 cfg = 0;
538 int id;
539
540 if (!cgx)
541 return;
542
543 id = get_sequence_id_of_lmac(cgx, lmac_id);
544
545 mac_ops = cgx->mac_ops;
546 if (enable) {
547 /* Enable promiscuous mode on LMAC */
548 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
549 cfg &= ~CGX_DMAC_CAM_ACCEPT;
550 cfg |= (CGX_DMAC_BCAST_MODE | CGX_DMAC_MCAST_MODE);
551 cgx_write(cgx, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
552
553 for (i = 0; i < max_dmac; i++) {
554 index = id * max_dmac + i;
555 cfg = cgx_read(cgx, 0,
556 (CGXX_CMRX_RX_DMAC_CAM0 + index * 0x8));
557 cfg &= ~CGX_DMAC_CAM_ADDR_ENABLE;
558 cgx_write(cgx, 0,
559 (CGXX_CMRX_RX_DMAC_CAM0 + index * 0x8), cfg);
560 }
561 } else {
562 /* Disable promiscuous mode */
563 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
564 cfg |= CGX_DMAC_CAM_ACCEPT | CGX_DMAC_MCAST_MODE;
565 cgx_write(cgx, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
566 for (i = 0; i < max_dmac; i++) {
567 index = id * max_dmac + i;
568 cfg = cgx_read(cgx, 0,
569 (CGXX_CMRX_RX_DMAC_CAM0 + index * 0x8));
570 if ((cfg & CGX_RX_DMAC_ADR_MASK) != 0) {
571 cfg |= CGX_DMAC_CAM_ADDR_ENABLE;
572 cgx_write(cgx, 0,
573 (CGXX_CMRX_RX_DMAC_CAM0 +
574 index * 0x8),
575 cfg);
576 }
577 }
578 }
579 }
580
581 /* Enable or disable forwarding received pause frames to Tx block */
cgx_lmac_enadis_rx_pause_fwding(void * cgxd,int lmac_id,bool enable)582 void cgx_lmac_enadis_rx_pause_fwding(void *cgxd, int lmac_id, bool enable)
583 {
584 struct cgx *cgx = cgxd;
585 u64 cfg;
586
587 if (!cgx)
588 return;
589
590 if (enable) {
591 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
592 cfg |= CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
593 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
594
595 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
596 cfg |= CGX_SMUX_RX_FRM_CTL_CTL_BCK;
597 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
598 } else {
599 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
600 cfg &= ~CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
601 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
602
603 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
604 cfg &= ~CGX_SMUX_RX_FRM_CTL_CTL_BCK;
605 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
606 }
607 }
608
cgx_get_rx_stats(void * cgxd,int lmac_id,int idx,u64 * rx_stat)609 int cgx_get_rx_stats(void *cgxd, int lmac_id, int idx, u64 *rx_stat)
610 {
611 struct cgx *cgx = cgxd;
612
613 if (!is_lmac_valid(cgx, lmac_id))
614 return -ENODEV;
615 *rx_stat = cgx_read(cgx, lmac_id, CGXX_CMRX_RX_STAT0 + (idx * 8));
616 return 0;
617 }
618
cgx_get_tx_stats(void * cgxd,int lmac_id,int idx,u64 * tx_stat)619 int cgx_get_tx_stats(void *cgxd, int lmac_id, int idx, u64 *tx_stat)
620 {
621 struct cgx *cgx = cgxd;
622
623 if (!is_lmac_valid(cgx, lmac_id))
624 return -ENODEV;
625 *tx_stat = cgx_read(cgx, lmac_id, CGXX_CMRX_TX_STAT0 + (idx * 8));
626 return 0;
627 }
628
cgx_features_get(void * cgxd)629 u64 cgx_features_get(void *cgxd)
630 {
631 return ((struct cgx *)cgxd)->hw_features;
632 }
633
cgx_set_fec_stats_count(struct cgx_link_user_info * linfo)634 static int cgx_set_fec_stats_count(struct cgx_link_user_info *linfo)
635 {
636 if (!linfo->fec)
637 return 0;
638
639 switch (linfo->lmac_type_id) {
640 case LMAC_MODE_SGMII:
641 case LMAC_MODE_XAUI:
642 case LMAC_MODE_RXAUI:
643 case LMAC_MODE_QSGMII:
644 return 0;
645 case LMAC_MODE_10G_R:
646 case LMAC_MODE_25G_R:
647 case LMAC_MODE_100G_R:
648 case LMAC_MODE_USXGMII:
649 return 1;
650 case LMAC_MODE_40G_R:
651 return 4;
652 case LMAC_MODE_50G_R:
653 if (linfo->fec == OTX2_FEC_BASER)
654 return 2;
655 else
656 return 1;
657 default:
658 return 0;
659 }
660 }
661
cgx_get_fec_stats(void * cgxd,int lmac_id,struct cgx_fec_stats_rsp * rsp)662 int cgx_get_fec_stats(void *cgxd, int lmac_id, struct cgx_fec_stats_rsp *rsp)
663 {
664 int stats, fec_stats_count = 0;
665 int corr_reg, uncorr_reg;
666 struct cgx *cgx = cgxd;
667
668 if (!cgx || lmac_id >= cgx->lmac_count)
669 return -ENODEV;
670 fec_stats_count =
671 cgx_set_fec_stats_count(&cgx->lmac_idmap[lmac_id]->link_info);
672 if (cgx->lmac_idmap[lmac_id]->link_info.fec == OTX2_FEC_BASER) {
673 corr_reg = CGXX_SPUX_LNX_FEC_CORR_BLOCKS;
674 uncorr_reg = CGXX_SPUX_LNX_FEC_UNCORR_BLOCKS;
675 } else {
676 corr_reg = CGXX_SPUX_RSFEC_CORR;
677 uncorr_reg = CGXX_SPUX_RSFEC_UNCORR;
678 }
679 for (stats = 0; stats < fec_stats_count; stats++) {
680 rsp->fec_corr_blks +=
681 cgx_read(cgx, lmac_id, corr_reg + (stats * 8));
682 rsp->fec_uncorr_blks +=
683 cgx_read(cgx, lmac_id, uncorr_reg + (stats * 8));
684 }
685 return 0;
686 }
687
cgx_lmac_rx_tx_enable(void * cgxd,int lmac_id,bool enable)688 int cgx_lmac_rx_tx_enable(void *cgxd, int lmac_id, bool enable)
689 {
690 struct cgx *cgx = cgxd;
691 u64 cfg;
692
693 if (!is_lmac_valid(cgx, lmac_id))
694 return -ENODEV;
695
696 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_CFG);
697 if (enable)
698 cfg |= CMR_EN | DATA_PKT_RX_EN | DATA_PKT_TX_EN;
699 else
700 cfg &= ~(CMR_EN | DATA_PKT_RX_EN | DATA_PKT_TX_EN);
701 cgx_write(cgx, lmac_id, CGXX_CMRX_CFG, cfg);
702 return 0;
703 }
704
cgx_lmac_tx_enable(void * cgxd,int lmac_id,bool enable)705 int cgx_lmac_tx_enable(void *cgxd, int lmac_id, bool enable)
706 {
707 struct cgx *cgx = cgxd;
708 u64 cfg, last;
709
710 if (!is_lmac_valid(cgx, lmac_id))
711 return -ENODEV;
712
713 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_CFG);
714 last = cfg;
715 if (enable)
716 cfg |= DATA_PKT_TX_EN;
717 else
718 cfg &= ~DATA_PKT_TX_EN;
719
720 if (cfg != last)
721 cgx_write(cgx, lmac_id, CGXX_CMRX_CFG, cfg);
722 return !!(last & DATA_PKT_TX_EN);
723 }
724
cgx_lmac_get_pause_frm_status(void * cgxd,int lmac_id,u8 * tx_pause,u8 * rx_pause)725 static int cgx_lmac_get_pause_frm_status(void *cgxd, int lmac_id,
726 u8 *tx_pause, u8 *rx_pause)
727 {
728 struct cgx *cgx = cgxd;
729 u64 cfg;
730
731 if (is_dev_rpm(cgx))
732 return 0;
733
734 if (!is_lmac_valid(cgx, lmac_id))
735 return -ENODEV;
736
737 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
738 *rx_pause = !!(cfg & CGX_SMUX_RX_FRM_CTL_CTL_BCK);
739
740 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_CTL);
741 *tx_pause = !!(cfg & CGX_SMUX_TX_CTL_L2P_BP_CONV);
742 return 0;
743 }
744
cgx_lmac_enadis_pause_frm(void * cgxd,int lmac_id,u8 tx_pause,u8 rx_pause)745 static int cgx_lmac_enadis_pause_frm(void *cgxd, int lmac_id,
746 u8 tx_pause, u8 rx_pause)
747 {
748 struct cgx *cgx = cgxd;
749 u64 cfg;
750
751 if (is_dev_rpm(cgx))
752 return 0;
753
754 if (!is_lmac_valid(cgx, lmac_id))
755 return -ENODEV;
756
757 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
758 cfg &= ~CGX_SMUX_RX_FRM_CTL_CTL_BCK;
759 cfg |= rx_pause ? CGX_SMUX_RX_FRM_CTL_CTL_BCK : 0x0;
760 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
761
762 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_CTL);
763 cfg &= ~CGX_SMUX_TX_CTL_L2P_BP_CONV;
764 cfg |= tx_pause ? CGX_SMUX_TX_CTL_L2P_BP_CONV : 0x0;
765 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_CTL, cfg);
766
767 cfg = cgx_read(cgx, 0, CGXX_CMR_RX_OVR_BP);
768 if (tx_pause) {
769 cfg &= ~CGX_CMR_RX_OVR_BP_EN(lmac_id);
770 } else {
771 cfg |= CGX_CMR_RX_OVR_BP_EN(lmac_id);
772 cfg &= ~CGX_CMR_RX_OVR_BP_BP(lmac_id);
773 }
774 cgx_write(cgx, 0, CGXX_CMR_RX_OVR_BP, cfg);
775 return 0;
776 }
777
cgx_lmac_pause_frm_config(void * cgxd,int lmac_id,bool enable)778 static void cgx_lmac_pause_frm_config(void *cgxd, int lmac_id, bool enable)
779 {
780 struct cgx *cgx = cgxd;
781 u64 cfg;
782
783 if (!is_lmac_valid(cgx, lmac_id))
784 return;
785 if (enable) {
786 /* Enable receive pause frames */
787 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
788 cfg |= CGX_SMUX_RX_FRM_CTL_CTL_BCK;
789 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
790
791 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
792 cfg |= CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
793 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
794
795 /* Enable pause frames transmission */
796 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_CTL);
797 cfg |= CGX_SMUX_TX_CTL_L2P_BP_CONV;
798 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_CTL, cfg);
799
800 /* Set pause time and interval */
801 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_PAUSE_PKT_TIME,
802 DEFAULT_PAUSE_TIME);
803 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_PAUSE_PKT_INTERVAL);
804 cfg &= ~0xFFFFULL;
805 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_PAUSE_PKT_INTERVAL,
806 cfg | (DEFAULT_PAUSE_TIME / 2));
807
808 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_TX_PAUSE_PKT_TIME,
809 DEFAULT_PAUSE_TIME);
810
811 cfg = cgx_read(cgx, lmac_id,
812 CGXX_GMP_GMI_TX_PAUSE_PKT_INTERVAL);
813 cfg &= ~0xFFFFULL;
814 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_TX_PAUSE_PKT_INTERVAL,
815 cfg | (DEFAULT_PAUSE_TIME / 2));
816 } else {
817 /* ALL pause frames received are completely ignored */
818 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
819 cfg &= ~CGX_SMUX_RX_FRM_CTL_CTL_BCK;
820 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
821
822 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
823 cfg &= ~CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
824 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
825
826 /* Disable pause frames transmission */
827 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_CTL);
828 cfg &= ~CGX_SMUX_TX_CTL_L2P_BP_CONV;
829 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_CTL, cfg);
830 }
831 }
832
cgx_lmac_ptp_config(void * cgxd,int lmac_id,bool enable)833 void cgx_lmac_ptp_config(void *cgxd, int lmac_id, bool enable)
834 {
835 struct cgx *cgx = cgxd;
836 u64 cfg;
837
838 if (!cgx)
839 return;
840
841 if (enable) {
842 /* Enable inbound PTP timestamping */
843 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
844 cfg |= CGX_GMP_GMI_RXX_FRM_CTL_PTP_MODE;
845 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
846
847 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
848 cfg |= CGX_SMUX_RX_FRM_CTL_PTP_MODE;
849 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
850 } else {
851 /* Disable inbound PTP stamping */
852 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
853 cfg &= ~CGX_GMP_GMI_RXX_FRM_CTL_PTP_MODE;
854 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
855
856 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
857 cfg &= ~CGX_SMUX_RX_FRM_CTL_PTP_MODE;
858 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
859 }
860 }
861
862 /* CGX Firmware interface low level support */
cgx_fwi_cmd_send(u64 req,u64 * resp,struct lmac * lmac)863 int cgx_fwi_cmd_send(u64 req, u64 *resp, struct lmac *lmac)
864 {
865 struct cgx *cgx = lmac->cgx;
866 struct device *dev;
867 int err = 0;
868 u64 cmd;
869
870 /* Ensure no other command is in progress */
871 err = mutex_lock_interruptible(&lmac->cmd_lock);
872 if (err)
873 return err;
874
875 /* Ensure command register is free */
876 cmd = cgx_read(cgx, lmac->lmac_id, CGX_COMMAND_REG);
877 if (FIELD_GET(CMDREG_OWN, cmd) != CGX_CMD_OWN_NS) {
878 err = -EBUSY;
879 goto unlock;
880 }
881
882 /* Update ownership in command request */
883 req = FIELD_SET(CMDREG_OWN, CGX_CMD_OWN_FIRMWARE, req);
884
885 /* Mark this lmac as pending, before we start */
886 lmac->cmd_pend = true;
887
888 /* Start command in hardware */
889 cgx_write(cgx, lmac->lmac_id, CGX_COMMAND_REG, req);
890
891 /* Ensure command is completed without errors */
892 if (!wait_event_timeout(lmac->wq_cmd_cmplt, !lmac->cmd_pend,
893 msecs_to_jiffies(CGX_CMD_TIMEOUT))) {
894 dev = &cgx->pdev->dev;
895 dev_err(dev, "cgx port %d:%d cmd timeout\n",
896 cgx->cgx_id, lmac->lmac_id);
897 err = -EIO;
898 goto unlock;
899 }
900
901 /* we have a valid command response */
902 smp_rmb(); /* Ensure the latest updates are visible */
903 *resp = lmac->resp;
904
905 unlock:
906 mutex_unlock(&lmac->cmd_lock);
907
908 return err;
909 }
910
cgx_fwi_cmd_generic(u64 req,u64 * resp,struct cgx * cgx,int lmac_id)911 int cgx_fwi_cmd_generic(u64 req, u64 *resp, struct cgx *cgx, int lmac_id)
912 {
913 struct lmac *lmac;
914 int err;
915
916 lmac = lmac_pdata(lmac_id, cgx);
917 if (!lmac)
918 return -ENODEV;
919
920 err = cgx_fwi_cmd_send(req, resp, lmac);
921
922 /* Check for valid response */
923 if (!err) {
924 if (FIELD_GET(EVTREG_STAT, *resp) == CGX_STAT_FAIL)
925 return -EIO;
926 else
927 return 0;
928 }
929
930 return err;
931 }
932
cgx_link_usertable_index_map(int speed)933 static int cgx_link_usertable_index_map(int speed)
934 {
935 switch (speed) {
936 case SPEED_10:
937 return CGX_LINK_10M;
938 case SPEED_100:
939 return CGX_LINK_100M;
940 case SPEED_1000:
941 return CGX_LINK_1G;
942 case SPEED_2500:
943 return CGX_LINK_2HG;
944 case SPEED_5000:
945 return CGX_LINK_5G;
946 case SPEED_10000:
947 return CGX_LINK_10G;
948 case SPEED_20000:
949 return CGX_LINK_20G;
950 case SPEED_25000:
951 return CGX_LINK_25G;
952 case SPEED_40000:
953 return CGX_LINK_40G;
954 case SPEED_50000:
955 return CGX_LINK_50G;
956 case 80000:
957 return CGX_LINK_80G;
958 case SPEED_100000:
959 return CGX_LINK_100G;
960 case SPEED_UNKNOWN:
961 return CGX_LINK_NONE;
962 }
963 return CGX_LINK_NONE;
964 }
965
set_mod_args(struct cgx_set_link_mode_args * args,u32 speed,u8 duplex,u8 autoneg,u64 mode)966 static void set_mod_args(struct cgx_set_link_mode_args *args,
967 u32 speed, u8 duplex, u8 autoneg, u64 mode)
968 {
969 /* Fill default values incase of user did not pass
970 * valid parameters
971 */
972 if (args->duplex == DUPLEX_UNKNOWN)
973 args->duplex = duplex;
974 if (args->speed == SPEED_UNKNOWN)
975 args->speed = speed;
976 if (args->an == AUTONEG_UNKNOWN)
977 args->an = autoneg;
978 args->mode = mode;
979 args->ports = 0;
980 }
981
otx2_map_ethtool_link_modes(u64 bitmask,struct cgx_set_link_mode_args * args)982 static void otx2_map_ethtool_link_modes(u64 bitmask,
983 struct cgx_set_link_mode_args *args)
984 {
985 switch (bitmask) {
986 case ETHTOOL_LINK_MODE_10baseT_Half_BIT:
987 set_mod_args(args, 10, 1, 1, BIT_ULL(CGX_MODE_SGMII));
988 break;
989 case ETHTOOL_LINK_MODE_10baseT_Full_BIT:
990 set_mod_args(args, 10, 0, 1, BIT_ULL(CGX_MODE_SGMII));
991 break;
992 case ETHTOOL_LINK_MODE_100baseT_Half_BIT:
993 set_mod_args(args, 100, 1, 1, BIT_ULL(CGX_MODE_SGMII));
994 break;
995 case ETHTOOL_LINK_MODE_100baseT_Full_BIT:
996 set_mod_args(args, 100, 0, 1, BIT_ULL(CGX_MODE_SGMII));
997 break;
998 case ETHTOOL_LINK_MODE_1000baseT_Half_BIT:
999 set_mod_args(args, 1000, 1, 1, BIT_ULL(CGX_MODE_SGMII));
1000 break;
1001 case ETHTOOL_LINK_MODE_1000baseT_Full_BIT:
1002 set_mod_args(args, 1000, 0, 1, BIT_ULL(CGX_MODE_SGMII));
1003 break;
1004 case ETHTOOL_LINK_MODE_1000baseX_Full_BIT:
1005 set_mod_args(args, 1000, 0, 0, BIT_ULL(CGX_MODE_1000_BASEX));
1006 break;
1007 case ETHTOOL_LINK_MODE_10000baseT_Full_BIT:
1008 set_mod_args(args, 1000, 0, 1, BIT_ULL(CGX_MODE_QSGMII));
1009 break;
1010 case ETHTOOL_LINK_MODE_10000baseSR_Full_BIT:
1011 set_mod_args(args, 10000, 0, 0, BIT_ULL(CGX_MODE_10G_C2C));
1012 break;
1013 case ETHTOOL_LINK_MODE_10000baseLR_Full_BIT:
1014 set_mod_args(args, 10000, 0, 0, BIT_ULL(CGX_MODE_10G_C2M));
1015 break;
1016 case ETHTOOL_LINK_MODE_10000baseKR_Full_BIT:
1017 set_mod_args(args, 10000, 0, 1, BIT_ULL(CGX_MODE_10G_KR));
1018 break;
1019 case ETHTOOL_LINK_MODE_25000baseSR_Full_BIT:
1020 set_mod_args(args, 25000, 0, 0, BIT_ULL(CGX_MODE_25G_C2C));
1021 break;
1022 case ETHTOOL_LINK_MODE_25000baseCR_Full_BIT:
1023 set_mod_args(args, 25000, 0, 1, BIT_ULL(CGX_MODE_25G_CR));
1024 break;
1025 case ETHTOOL_LINK_MODE_25000baseKR_Full_BIT:
1026 set_mod_args(args, 25000, 0, 1, BIT_ULL(CGX_MODE_25G_KR));
1027 break;
1028 case ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT:
1029 set_mod_args(args, 40000, 0, 0, BIT_ULL(CGX_MODE_40G_C2C));
1030 break;
1031 case ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT:
1032 set_mod_args(args, 40000, 0, 0, BIT_ULL(CGX_MODE_40G_C2M));
1033 break;
1034 case ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT:
1035 set_mod_args(args, 40000, 0, 1, BIT_ULL(CGX_MODE_40G_CR4));
1036 break;
1037 case ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT:
1038 set_mod_args(args, 40000, 0, 1, BIT_ULL(CGX_MODE_40G_KR4));
1039 break;
1040 case ETHTOOL_LINK_MODE_50000baseSR_Full_BIT:
1041 set_mod_args(args, 50000, 0, 0, BIT_ULL(CGX_MODE_50G_C2C));
1042 break;
1043 case ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT:
1044 set_mod_args(args, 50000, 0, 0, BIT_ULL(CGX_MODE_50G_C2M));
1045 break;
1046 case ETHTOOL_LINK_MODE_50000baseCR_Full_BIT:
1047 set_mod_args(args, 50000, 0, 1, BIT_ULL(CGX_MODE_50G_CR));
1048 break;
1049 case ETHTOOL_LINK_MODE_50000baseKR_Full_BIT:
1050 set_mod_args(args, 50000, 0, 1, BIT_ULL(CGX_MODE_50G_KR));
1051 break;
1052 case ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT:
1053 set_mod_args(args, 100000, 0, 0, BIT_ULL(CGX_MODE_100G_C2C));
1054 break;
1055 case ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT:
1056 set_mod_args(args, 100000, 0, 0, BIT_ULL(CGX_MODE_100G_C2M));
1057 break;
1058 case ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT:
1059 set_mod_args(args, 100000, 0, 1, BIT_ULL(CGX_MODE_100G_CR4));
1060 break;
1061 case ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT:
1062 set_mod_args(args, 100000, 0, 1, BIT_ULL(CGX_MODE_100G_KR4));
1063 break;
1064 default:
1065 set_mod_args(args, 0, 1, 0, BIT_ULL(CGX_MODE_MAX));
1066 break;
1067 }
1068 }
1069
link_status_user_format(u64 lstat,struct cgx_link_user_info * linfo,struct cgx * cgx,u8 lmac_id)1070 static inline void link_status_user_format(u64 lstat,
1071 struct cgx_link_user_info *linfo,
1072 struct cgx *cgx, u8 lmac_id)
1073 {
1074 const char *lmac_string;
1075
1076 linfo->link_up = FIELD_GET(RESP_LINKSTAT_UP, lstat);
1077 linfo->full_duplex = FIELD_GET(RESP_LINKSTAT_FDUPLEX, lstat);
1078 linfo->speed = cgx_speed_mbps[FIELD_GET(RESP_LINKSTAT_SPEED, lstat)];
1079 linfo->an = FIELD_GET(RESP_LINKSTAT_AN, lstat);
1080 linfo->fec = FIELD_GET(RESP_LINKSTAT_FEC, lstat);
1081 linfo->lmac_type_id = cgx_get_lmac_type(cgx, lmac_id);
1082 lmac_string = cgx_lmactype_string[linfo->lmac_type_id];
1083 strncpy(linfo->lmac_type, lmac_string, LMACTYPE_STR_LEN - 1);
1084 }
1085
1086 /* Hardware event handlers */
cgx_link_change_handler(u64 lstat,struct lmac * lmac)1087 static inline void cgx_link_change_handler(u64 lstat,
1088 struct lmac *lmac)
1089 {
1090 struct cgx_link_user_info *linfo;
1091 struct cgx *cgx = lmac->cgx;
1092 struct cgx_link_event event;
1093 struct device *dev;
1094 int err_type;
1095
1096 dev = &cgx->pdev->dev;
1097
1098 link_status_user_format(lstat, &event.link_uinfo, cgx, lmac->lmac_id);
1099 err_type = FIELD_GET(RESP_LINKSTAT_ERRTYPE, lstat);
1100
1101 event.cgx_id = cgx->cgx_id;
1102 event.lmac_id = lmac->lmac_id;
1103
1104 /* update the local copy of link status */
1105 lmac->link_info = event.link_uinfo;
1106 linfo = &lmac->link_info;
1107
1108 if (err_type == CGX_ERR_SPEED_CHANGE_INVALID)
1109 return;
1110
1111 /* Ensure callback doesn't get unregistered until we finish it */
1112 spin_lock(&lmac->event_cb_lock);
1113
1114 if (!lmac->event_cb.notify_link_chg) {
1115 dev_dbg(dev, "cgx port %d:%d Link change handler null",
1116 cgx->cgx_id, lmac->lmac_id);
1117 if (err_type != CGX_ERR_NONE) {
1118 dev_err(dev, "cgx port %d:%d Link error %d\n",
1119 cgx->cgx_id, lmac->lmac_id, err_type);
1120 }
1121 dev_info(dev, "cgx port %d:%d Link is %s %d Mbps\n",
1122 cgx->cgx_id, lmac->lmac_id,
1123 linfo->link_up ? "UP" : "DOWN", linfo->speed);
1124 goto err;
1125 }
1126
1127 if (lmac->event_cb.notify_link_chg(&event, lmac->event_cb.data))
1128 dev_err(dev, "event notification failure\n");
1129 err:
1130 spin_unlock(&lmac->event_cb_lock);
1131 }
1132
cgx_cmdresp_is_linkevent(u64 event)1133 static inline bool cgx_cmdresp_is_linkevent(u64 event)
1134 {
1135 u8 id;
1136
1137 id = FIELD_GET(EVTREG_ID, event);
1138 if (id == CGX_CMD_LINK_BRING_UP ||
1139 id == CGX_CMD_LINK_BRING_DOWN ||
1140 id == CGX_CMD_MODE_CHANGE)
1141 return true;
1142 else
1143 return false;
1144 }
1145
cgx_event_is_linkevent(u64 event)1146 static inline bool cgx_event_is_linkevent(u64 event)
1147 {
1148 if (FIELD_GET(EVTREG_ID, event) == CGX_EVT_LINK_CHANGE)
1149 return true;
1150 else
1151 return false;
1152 }
1153
cgx_fwi_event_handler(int irq,void * data)1154 static irqreturn_t cgx_fwi_event_handler(int irq, void *data)
1155 {
1156 u64 event, offset, clear_bit;
1157 struct lmac *lmac = data;
1158 struct cgx *cgx;
1159
1160 cgx = lmac->cgx;
1161
1162 /* Clear SW_INT for RPM and CMR_INT for CGX */
1163 offset = cgx->mac_ops->int_register;
1164 clear_bit = cgx->mac_ops->int_ena_bit;
1165
1166 event = cgx_read(cgx, lmac->lmac_id, CGX_EVENT_REG);
1167
1168 if (!FIELD_GET(EVTREG_ACK, event))
1169 return IRQ_NONE;
1170
1171 switch (FIELD_GET(EVTREG_EVT_TYPE, event)) {
1172 case CGX_EVT_CMD_RESP:
1173 /* Copy the response. Since only one command is active at a
1174 * time, there is no way a response can get overwritten
1175 */
1176 lmac->resp = event;
1177 /* Ensure response is updated before thread context starts */
1178 smp_wmb();
1179
1180 /* There wont be separate events for link change initiated from
1181 * software; Hence report the command responses as events
1182 */
1183 if (cgx_cmdresp_is_linkevent(event))
1184 cgx_link_change_handler(event, lmac);
1185
1186 /* Release thread waiting for completion */
1187 lmac->cmd_pend = false;
1188 wake_up_interruptible(&lmac->wq_cmd_cmplt);
1189 break;
1190 case CGX_EVT_ASYNC:
1191 if (cgx_event_is_linkevent(event))
1192 cgx_link_change_handler(event, lmac);
1193 break;
1194 }
1195
1196 /* Any new event or command response will be posted by firmware
1197 * only after the current status is acked.
1198 * Ack the interrupt register as well.
1199 */
1200 cgx_write(lmac->cgx, lmac->lmac_id, CGX_EVENT_REG, 0);
1201 cgx_write(lmac->cgx, lmac->lmac_id, offset, clear_bit);
1202
1203 return IRQ_HANDLED;
1204 }
1205
1206 /* APIs for PHY management using CGX firmware interface */
1207
1208 /* callback registration for hardware events like link change */
cgx_lmac_evh_register(struct cgx_event_cb * cb,void * cgxd,int lmac_id)1209 int cgx_lmac_evh_register(struct cgx_event_cb *cb, void *cgxd, int lmac_id)
1210 {
1211 struct cgx *cgx = cgxd;
1212 struct lmac *lmac;
1213
1214 lmac = lmac_pdata(lmac_id, cgx);
1215 if (!lmac)
1216 return -ENODEV;
1217
1218 lmac->event_cb = *cb;
1219
1220 return 0;
1221 }
1222
cgx_lmac_evh_unregister(void * cgxd,int lmac_id)1223 int cgx_lmac_evh_unregister(void *cgxd, int lmac_id)
1224 {
1225 struct lmac *lmac;
1226 unsigned long flags;
1227 struct cgx *cgx = cgxd;
1228
1229 lmac = lmac_pdata(lmac_id, cgx);
1230 if (!lmac)
1231 return -ENODEV;
1232
1233 spin_lock_irqsave(&lmac->event_cb_lock, flags);
1234 lmac->event_cb.notify_link_chg = NULL;
1235 lmac->event_cb.data = NULL;
1236 spin_unlock_irqrestore(&lmac->event_cb_lock, flags);
1237
1238 return 0;
1239 }
1240
cgx_get_fwdata_base(u64 * base)1241 int cgx_get_fwdata_base(u64 *base)
1242 {
1243 u64 req = 0, resp;
1244 struct cgx *cgx;
1245 int first_lmac;
1246 int err;
1247
1248 cgx = list_first_entry_or_null(&cgx_list, struct cgx, cgx_list);
1249 if (!cgx)
1250 return -ENXIO;
1251
1252 first_lmac = find_first_bit(&cgx->lmac_bmap, MAX_LMAC_PER_CGX);
1253 req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_FWD_BASE, req);
1254 err = cgx_fwi_cmd_generic(req, &resp, cgx, first_lmac);
1255 if (!err)
1256 *base = FIELD_GET(RESP_FWD_BASE, resp);
1257
1258 return err;
1259 }
1260
cgx_set_link_mode(void * cgxd,struct cgx_set_link_mode_args args,int cgx_id,int lmac_id)1261 int cgx_set_link_mode(void *cgxd, struct cgx_set_link_mode_args args,
1262 int cgx_id, int lmac_id)
1263 {
1264 struct cgx *cgx = cgxd;
1265 u64 req = 0, resp;
1266
1267 if (!cgx)
1268 return -ENODEV;
1269
1270 if (args.mode)
1271 otx2_map_ethtool_link_modes(args.mode, &args);
1272 if (!args.speed && args.duplex && !args.an)
1273 return -EINVAL;
1274
1275 req = FIELD_SET(CMDREG_ID, CGX_CMD_MODE_CHANGE, req);
1276 req = FIELD_SET(CMDMODECHANGE_SPEED,
1277 cgx_link_usertable_index_map(args.speed), req);
1278 req = FIELD_SET(CMDMODECHANGE_DUPLEX, args.duplex, req);
1279 req = FIELD_SET(CMDMODECHANGE_AN, args.an, req);
1280 req = FIELD_SET(CMDMODECHANGE_PORT, args.ports, req);
1281 req = FIELD_SET(CMDMODECHANGE_FLAGS, args.mode, req);
1282
1283 return cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
1284 }
cgx_set_fec(u64 fec,int cgx_id,int lmac_id)1285 int cgx_set_fec(u64 fec, int cgx_id, int lmac_id)
1286 {
1287 u64 req = 0, resp;
1288 struct cgx *cgx;
1289 int err = 0;
1290
1291 cgx = cgx_get_pdata(cgx_id);
1292 if (!cgx)
1293 return -ENXIO;
1294
1295 req = FIELD_SET(CMDREG_ID, CGX_CMD_SET_FEC, req);
1296 req = FIELD_SET(CMDSETFEC, fec, req);
1297 err = cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
1298 if (err)
1299 return err;
1300
1301 cgx->lmac_idmap[lmac_id]->link_info.fec =
1302 FIELD_GET(RESP_LINKSTAT_FEC, resp);
1303 return cgx->lmac_idmap[lmac_id]->link_info.fec;
1304 }
1305
cgx_get_phy_fec_stats(void * cgxd,int lmac_id)1306 int cgx_get_phy_fec_stats(void *cgxd, int lmac_id)
1307 {
1308 struct cgx *cgx = cgxd;
1309 u64 req = 0, resp;
1310
1311 if (!cgx)
1312 return -ENODEV;
1313
1314 req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_PHY_FEC_STATS, req);
1315 return cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
1316 }
1317
cgx_fwi_link_change(struct cgx * cgx,int lmac_id,bool enable)1318 static int cgx_fwi_link_change(struct cgx *cgx, int lmac_id, bool enable)
1319 {
1320 u64 req = 0;
1321 u64 resp;
1322
1323 if (enable)
1324 req = FIELD_SET(CMDREG_ID, CGX_CMD_LINK_BRING_UP, req);
1325 else
1326 req = FIELD_SET(CMDREG_ID, CGX_CMD_LINK_BRING_DOWN, req);
1327
1328 return cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
1329 }
1330
cgx_fwi_read_version(u64 * resp,struct cgx * cgx)1331 static inline int cgx_fwi_read_version(u64 *resp, struct cgx *cgx)
1332 {
1333 int first_lmac = find_first_bit(&cgx->lmac_bmap, MAX_LMAC_PER_CGX);
1334 u64 req = 0;
1335
1336 req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_FW_VER, req);
1337 return cgx_fwi_cmd_generic(req, resp, cgx, first_lmac);
1338 }
1339
cgx_lmac_verify_fwi_version(struct cgx * cgx)1340 static int cgx_lmac_verify_fwi_version(struct cgx *cgx)
1341 {
1342 struct device *dev = &cgx->pdev->dev;
1343 int major_ver, minor_ver;
1344 u64 resp;
1345 int err;
1346
1347 if (!cgx->lmac_count)
1348 return 0;
1349
1350 err = cgx_fwi_read_version(&resp, cgx);
1351 if (err)
1352 return err;
1353
1354 major_ver = FIELD_GET(RESP_MAJOR_VER, resp);
1355 minor_ver = FIELD_GET(RESP_MINOR_VER, resp);
1356 dev_dbg(dev, "Firmware command interface version = %d.%d\n",
1357 major_ver, minor_ver);
1358 if (major_ver != CGX_FIRMWARE_MAJOR_VER)
1359 return -EIO;
1360 else
1361 return 0;
1362 }
1363
cgx_lmac_linkup_work(struct work_struct * work)1364 static void cgx_lmac_linkup_work(struct work_struct *work)
1365 {
1366 struct cgx *cgx = container_of(work, struct cgx, cgx_cmd_work);
1367 struct device *dev = &cgx->pdev->dev;
1368 int i, err;
1369
1370 /* Do Link up for all the enabled lmacs */
1371 for_each_set_bit(i, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) {
1372 err = cgx_fwi_link_change(cgx, i, true);
1373 if (err)
1374 dev_info(dev, "cgx port %d:%d Link up command failed\n",
1375 cgx->cgx_id, i);
1376 }
1377 }
1378
cgx_lmac_linkup_start(void * cgxd)1379 int cgx_lmac_linkup_start(void *cgxd)
1380 {
1381 struct cgx *cgx = cgxd;
1382
1383 if (!cgx)
1384 return -ENODEV;
1385
1386 queue_work(cgx->cgx_cmd_workq, &cgx->cgx_cmd_work);
1387
1388 return 0;
1389 }
1390
cgx_lmac_get_fifolen(struct cgx * cgx)1391 static void cgx_lmac_get_fifolen(struct cgx *cgx)
1392 {
1393 u64 cfg;
1394
1395 cfg = cgx_read(cgx, 0, CGX_CONST);
1396 cgx->mac_ops->fifo_len = FIELD_GET(CGX_CONST_RXFIFO_SIZE, cfg);
1397 }
1398
cgx_configure_interrupt(struct cgx * cgx,struct lmac * lmac,int cnt,bool req_free)1399 static int cgx_configure_interrupt(struct cgx *cgx, struct lmac *lmac,
1400 int cnt, bool req_free)
1401 {
1402 struct mac_ops *mac_ops = cgx->mac_ops;
1403 u64 offset, ena_bit;
1404 unsigned int irq;
1405 int err;
1406
1407 irq = pci_irq_vector(cgx->pdev, mac_ops->lmac_fwi +
1408 cnt * mac_ops->irq_offset);
1409 offset = mac_ops->int_set_reg;
1410 ena_bit = mac_ops->int_ena_bit;
1411
1412 if (req_free) {
1413 free_irq(irq, lmac);
1414 return 0;
1415 }
1416
1417 err = request_irq(irq, cgx_fwi_event_handler, 0, lmac->name, lmac);
1418 if (err)
1419 return err;
1420
1421 /* Enable interrupt */
1422 cgx_write(cgx, lmac->lmac_id, offset, ena_bit);
1423 return 0;
1424 }
1425
cgx_get_nr_lmacs(void * cgxd)1426 int cgx_get_nr_lmacs(void *cgxd)
1427 {
1428 struct cgx *cgx = cgxd;
1429
1430 return cgx_read(cgx, 0, CGXX_CMRX_RX_LMACS) & 0x7ULL;
1431 }
1432
cgx_get_lmacid(void * cgxd,u8 lmac_index)1433 u8 cgx_get_lmacid(void *cgxd, u8 lmac_index)
1434 {
1435 struct cgx *cgx = cgxd;
1436
1437 return cgx->lmac_idmap[lmac_index]->lmac_id;
1438 }
1439
cgx_get_lmac_bmap(void * cgxd)1440 unsigned long cgx_get_lmac_bmap(void *cgxd)
1441 {
1442 struct cgx *cgx = cgxd;
1443
1444 return cgx->lmac_bmap;
1445 }
1446
cgx_lmac_init(struct cgx * cgx)1447 static int cgx_lmac_init(struct cgx *cgx)
1448 {
1449 struct lmac *lmac;
1450 u64 lmac_list;
1451 int i, err;
1452
1453 cgx_lmac_get_fifolen(cgx);
1454
1455 cgx->lmac_count = cgx->mac_ops->get_nr_lmacs(cgx);
1456 /* lmac_list specifies which lmacs are enabled
1457 * when bit n is set to 1, LMAC[n] is enabled
1458 */
1459 if (cgx->mac_ops->non_contiguous_serdes_lane)
1460 lmac_list = cgx_read(cgx, 0, CGXX_CMRX_RX_LMACS) & 0xFULL;
1461
1462 if (cgx->lmac_count > MAX_LMAC_PER_CGX)
1463 cgx->lmac_count = MAX_LMAC_PER_CGX;
1464
1465 for (i = 0; i < cgx->lmac_count; i++) {
1466 lmac = kzalloc(sizeof(struct lmac), GFP_KERNEL);
1467 if (!lmac)
1468 return -ENOMEM;
1469 lmac->name = kcalloc(1, sizeof("cgx_fwi_xxx_yyy"), GFP_KERNEL);
1470 if (!lmac->name) {
1471 err = -ENOMEM;
1472 goto err_lmac_free;
1473 }
1474 sprintf(lmac->name, "cgx_fwi_%d_%d", cgx->cgx_id, i);
1475 if (cgx->mac_ops->non_contiguous_serdes_lane) {
1476 lmac->lmac_id = __ffs64(lmac_list);
1477 lmac_list &= ~BIT_ULL(lmac->lmac_id);
1478 } else {
1479 lmac->lmac_id = i;
1480 }
1481
1482 lmac->cgx = cgx;
1483 lmac->mac_to_index_bmap.max =
1484 MAX_DMAC_ENTRIES_PER_CGX / cgx->lmac_count;
1485 err = rvu_alloc_bitmap(&lmac->mac_to_index_bmap);
1486 if (err)
1487 goto err_name_free;
1488
1489 /* Reserve first entry for default MAC address */
1490 set_bit(0, lmac->mac_to_index_bmap.bmap);
1491
1492 init_waitqueue_head(&lmac->wq_cmd_cmplt);
1493 mutex_init(&lmac->cmd_lock);
1494 spin_lock_init(&lmac->event_cb_lock);
1495 err = cgx_configure_interrupt(cgx, lmac, lmac->lmac_id, false);
1496 if (err)
1497 goto err_bitmap_free;
1498
1499 /* Add reference */
1500 cgx->lmac_idmap[lmac->lmac_id] = lmac;
1501 set_bit(lmac->lmac_id, &cgx->lmac_bmap);
1502 cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, true);
1503 }
1504
1505 return cgx_lmac_verify_fwi_version(cgx);
1506
1507 err_bitmap_free:
1508 rvu_free_bitmap(&lmac->mac_to_index_bmap);
1509 err_name_free:
1510 kfree(lmac->name);
1511 err_lmac_free:
1512 kfree(lmac);
1513 return err;
1514 }
1515
cgx_lmac_exit(struct cgx * cgx)1516 static int cgx_lmac_exit(struct cgx *cgx)
1517 {
1518 struct lmac *lmac;
1519 int i;
1520
1521 if (cgx->cgx_cmd_workq) {
1522 destroy_workqueue(cgx->cgx_cmd_workq);
1523 cgx->cgx_cmd_workq = NULL;
1524 }
1525
1526 /* Free all lmac related resources */
1527 for_each_set_bit(i, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) {
1528 lmac = cgx->lmac_idmap[i];
1529 if (!lmac)
1530 continue;
1531 cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, false);
1532 cgx_configure_interrupt(cgx, lmac, lmac->lmac_id, true);
1533 kfree(lmac->mac_to_index_bmap.bmap);
1534 kfree(lmac->name);
1535 kfree(lmac);
1536 }
1537
1538 return 0;
1539 }
1540
cgx_populate_features(struct cgx * cgx)1541 static void cgx_populate_features(struct cgx *cgx)
1542 {
1543 if (is_dev_rpm(cgx))
1544 cgx->hw_features = (RVU_LMAC_FEAT_DMACF | RVU_MAC_RPM |
1545 RVU_LMAC_FEAT_FC | RVU_LMAC_FEAT_PTP);
1546 else
1547 cgx->hw_features = (RVU_LMAC_FEAT_FC | RVU_LMAC_FEAT_HIGIG2 |
1548 RVU_LMAC_FEAT_PTP | RVU_LMAC_FEAT_DMACF);
1549 }
1550
1551 static struct mac_ops cgx_mac_ops = {
1552 .name = "cgx",
1553 .csr_offset = 0,
1554 .lmac_offset = 18,
1555 .int_register = CGXX_CMRX_INT,
1556 .int_set_reg = CGXX_CMRX_INT_ENA_W1S,
1557 .irq_offset = 9,
1558 .int_ena_bit = FW_CGX_INT,
1559 .lmac_fwi = CGX_LMAC_FWI,
1560 .non_contiguous_serdes_lane = false,
1561 .rx_stats_cnt = 9,
1562 .tx_stats_cnt = 18,
1563 .get_nr_lmacs = cgx_get_nr_lmacs,
1564 .get_lmac_type = cgx_get_lmac_type,
1565 .mac_lmac_intl_lbk = cgx_lmac_internal_loopback,
1566 .mac_get_rx_stats = cgx_get_rx_stats,
1567 .mac_get_tx_stats = cgx_get_tx_stats,
1568 .mac_enadis_rx_pause_fwding = cgx_lmac_enadis_rx_pause_fwding,
1569 .mac_get_pause_frm_status = cgx_lmac_get_pause_frm_status,
1570 .mac_enadis_pause_frm = cgx_lmac_enadis_pause_frm,
1571 .mac_pause_frm_config = cgx_lmac_pause_frm_config,
1572 .mac_enadis_ptp_config = cgx_lmac_ptp_config,
1573 };
1574
cgx_probe(struct pci_dev * pdev,const struct pci_device_id * id)1575 static int cgx_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1576 {
1577 struct device *dev = &pdev->dev;
1578 struct cgx *cgx;
1579 int err, nvec;
1580
1581 cgx = devm_kzalloc(dev, sizeof(*cgx), GFP_KERNEL);
1582 if (!cgx)
1583 return -ENOMEM;
1584 cgx->pdev = pdev;
1585
1586 pci_set_drvdata(pdev, cgx);
1587
1588 /* Use mac_ops to get MAC specific features */
1589 if (pdev->device == PCI_DEVID_CN10K_RPM)
1590 cgx->mac_ops = rpm_get_mac_ops();
1591 else
1592 cgx->mac_ops = &cgx_mac_ops;
1593
1594 err = pci_enable_device(pdev);
1595 if (err) {
1596 dev_err(dev, "Failed to enable PCI device\n");
1597 pci_set_drvdata(pdev, NULL);
1598 return err;
1599 }
1600
1601 err = pci_request_regions(pdev, DRV_NAME);
1602 if (err) {
1603 dev_err(dev, "PCI request regions failed 0x%x\n", err);
1604 goto err_disable_device;
1605 }
1606
1607 /* MAP configuration registers */
1608 cgx->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
1609 if (!cgx->reg_base) {
1610 dev_err(dev, "CGX: Cannot map CSR memory space, aborting\n");
1611 err = -ENOMEM;
1612 goto err_release_regions;
1613 }
1614
1615 nvec = pci_msix_vec_count(cgx->pdev);
1616 err = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_MSIX);
1617 if (err < 0 || err != nvec) {
1618 dev_err(dev, "Request for %d msix vectors failed, err %d\n",
1619 nvec, err);
1620 goto err_release_regions;
1621 }
1622
1623 cgx->cgx_id = (pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM) >> 24)
1624 & CGX_ID_MASK;
1625
1626 /* init wq for processing linkup requests */
1627 INIT_WORK(&cgx->cgx_cmd_work, cgx_lmac_linkup_work);
1628 cgx->cgx_cmd_workq = alloc_workqueue("cgx_cmd_workq", 0, 0);
1629 if (!cgx->cgx_cmd_workq) {
1630 dev_err(dev, "alloc workqueue failed for cgx cmd");
1631 err = -ENOMEM;
1632 goto err_free_irq_vectors;
1633 }
1634
1635 list_add(&cgx->cgx_list, &cgx_list);
1636
1637
1638 cgx_populate_features(cgx);
1639
1640 mutex_init(&cgx->lock);
1641
1642 err = cgx_lmac_init(cgx);
1643 if (err)
1644 goto err_release_lmac;
1645
1646 return 0;
1647
1648 err_release_lmac:
1649 cgx_lmac_exit(cgx);
1650 list_del(&cgx->cgx_list);
1651 err_free_irq_vectors:
1652 pci_free_irq_vectors(pdev);
1653 err_release_regions:
1654 pci_release_regions(pdev);
1655 err_disable_device:
1656 pci_disable_device(pdev);
1657 pci_set_drvdata(pdev, NULL);
1658 return err;
1659 }
1660
cgx_remove(struct pci_dev * pdev)1661 static void cgx_remove(struct pci_dev *pdev)
1662 {
1663 struct cgx *cgx = pci_get_drvdata(pdev);
1664
1665 if (cgx) {
1666 cgx_lmac_exit(cgx);
1667 list_del(&cgx->cgx_list);
1668 }
1669 pci_free_irq_vectors(pdev);
1670 pci_release_regions(pdev);
1671 pci_disable_device(pdev);
1672 pci_set_drvdata(pdev, NULL);
1673 }
1674
1675 struct pci_driver cgx_driver = {
1676 .name = DRV_NAME,
1677 .id_table = cgx_id_table,
1678 .probe = cgx_probe,
1679 .remove = cgx_remove,
1680 };
1681