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Merge tag 'net-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
[drm/drm-misc.git] / drivers / net / ethernet / broadcom / bnxt / bnxt_coredump.c
blob7236d8e548ab5d1974c3f56fc0b3837f20e95741
1 /* Broadcom NetXtreme-C/E network driver.
2 *
3 * Copyright (c) 2021 Broadcom Limited
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
8 */
9
10 #include <linux/types.h>
11 #include <linux/errno.h>
12 #include <linux/pci.h>
13 #include "bnxt_hsi.h"
14 #include "bnxt.h"
15 #include "bnxt_hwrm.h"
16 #include "bnxt_coredump.h"
17
18 static const u16 bnxt_bstore_to_seg_id[] = {
19 [BNXT_CTX_QP] = BNXT_CTX_MEM_SEG_QP,
20 [BNXT_CTX_SRQ] = BNXT_CTX_MEM_SEG_SRQ,
21 [BNXT_CTX_CQ] = BNXT_CTX_MEM_SEG_CQ,
22 [BNXT_CTX_VNIC] = BNXT_CTX_MEM_SEG_VNIC,
23 [BNXT_CTX_STAT] = BNXT_CTX_MEM_SEG_STAT,
24 [BNXT_CTX_STQM] = BNXT_CTX_MEM_SEG_STQM,
25 [BNXT_CTX_FTQM] = BNXT_CTX_MEM_SEG_FTQM,
26 [BNXT_CTX_MRAV] = BNXT_CTX_MEM_SEG_MRAV,
27 [BNXT_CTX_TIM] = BNXT_CTX_MEM_SEG_TIM,
28 [BNXT_CTX_SRT] = BNXT_CTX_MEM_SEG_SRT,
29 [BNXT_CTX_SRT2] = BNXT_CTX_MEM_SEG_SRT2,
30 [BNXT_CTX_CRT] = BNXT_CTX_MEM_SEG_CRT,
31 [BNXT_CTX_CRT2] = BNXT_CTX_MEM_SEG_CRT2,
32 [BNXT_CTX_RIGP0] = BNXT_CTX_MEM_SEG_RIGP0,
33 [BNXT_CTX_L2HWRM] = BNXT_CTX_MEM_SEG_L2HWRM,
34 [BNXT_CTX_REHWRM] = BNXT_CTX_MEM_SEG_REHWRM,
35 [BNXT_CTX_CA0] = BNXT_CTX_MEM_SEG_CA0,
36 [BNXT_CTX_CA1] = BNXT_CTX_MEM_SEG_CA1,
37 [BNXT_CTX_CA2] = BNXT_CTX_MEM_SEG_CA2,
38 [BNXT_CTX_RIGP1] = BNXT_CTX_MEM_SEG_RIGP1,
39 };
40
41 static int bnxt_dbg_hwrm_log_buffer_flush(struct bnxt *bp, u16 type, u32 flags,
42 u32 *offset)
43 {
44 struct hwrm_dbg_log_buffer_flush_output *resp;
45 struct hwrm_dbg_log_buffer_flush_input *req;
46 int rc;
47
48 rc = hwrm_req_init(bp, req, HWRM_DBG_LOG_BUFFER_FLUSH);
49 if (rc)
50 return rc;
51
52 req->flags = cpu_to_le32(flags);
53 req->type = cpu_to_le16(type);
54 resp = hwrm_req_hold(bp, req);
55 rc = hwrm_req_send(bp, req);
56 if (!rc)
57 *offset = le32_to_cpu(resp->current_buffer_offset);
58 hwrm_req_drop(bp, req);
59 return rc;
60 }
61
62 static int bnxt_hwrm_dbg_dma_data(struct bnxt *bp, void *msg,
63 struct bnxt_hwrm_dbg_dma_info *info)
64 {
65 struct hwrm_dbg_cmn_input *cmn_req = msg;
66 __le16 *seq_ptr = msg + info->seq_off;
67 struct hwrm_dbg_cmn_output *cmn_resp;
68 u16 seq = 0, len, segs_off;
69 dma_addr_t dma_handle;
70 void *dma_buf, *resp;
71 int rc, off = 0;
72
73 dma_buf = hwrm_req_dma_slice(bp, msg, info->dma_len, &dma_handle);
74 if (!dma_buf) {
75 hwrm_req_drop(bp, msg);
76 return -ENOMEM;
77 }
78
79 hwrm_req_timeout(bp, msg, bp->hwrm_cmd_max_timeout);
80 cmn_resp = hwrm_req_hold(bp, msg);
81 resp = cmn_resp;
82
83 segs_off = offsetof(struct hwrm_dbg_coredump_list_output,
84 total_segments);
85 cmn_req->host_dest_addr = cpu_to_le64(dma_handle);
86 cmn_req->host_buf_len = cpu_to_le32(info->dma_len);
87 while (1) {
88 *seq_ptr = cpu_to_le16(seq);
89 rc = hwrm_req_send(bp, msg);
90 if (rc)
91 break;
92
93 len = le16_to_cpu(*((__le16 *)(resp + info->data_len_off)));
94 if (!seq &&
95 cmn_req->req_type == cpu_to_le16(HWRM_DBG_COREDUMP_LIST)) {
96 info->segs = le16_to_cpu(*((__le16 *)(resp +
97 segs_off)));
98 if (!info->segs) {
99 rc = -EIO;
100 break;
101 }
102
103 info->dest_buf_size = info->segs *
104 sizeof(struct coredump_segment_record);
105 info->dest_buf = kmalloc(info->dest_buf_size,
106 GFP_KERNEL);
107 if (!info->dest_buf) {
108 rc = -ENOMEM;
109 break;
110 }
111 }
112
113 if (info->dest_buf) {
114 if ((info->seg_start + off + len) <=
115 BNXT_COREDUMP_BUF_LEN(info->buf_len)) {
116 memcpy(info->dest_buf + off, dma_buf, len);
117 } else {
118 rc = -ENOBUFS;
119 break;
120 }
121 }
122
123 if (cmn_req->req_type ==
124 cpu_to_le16(HWRM_DBG_COREDUMP_RETRIEVE))
125 info->dest_buf_size += len;
126
127 if (!(cmn_resp->flags & HWRM_DBG_CMN_FLAGS_MORE))
128 break;
129
130 seq++;
131 off += len;
132 }
133 hwrm_req_drop(bp, msg);
134 return rc;
135 }
136
137 static int bnxt_hwrm_dbg_coredump_list(struct bnxt *bp,
138 struct bnxt_coredump *coredump)
139 {
140 struct bnxt_hwrm_dbg_dma_info info = {NULL};
141 struct hwrm_dbg_coredump_list_input *req;
142 int rc;
143
144 rc = hwrm_req_init(bp, req, HWRM_DBG_COREDUMP_LIST);
145 if (rc)
146 return rc;
147
148 info.dma_len = COREDUMP_LIST_BUF_LEN;
149 info.seq_off = offsetof(struct hwrm_dbg_coredump_list_input, seq_no);
150 info.data_len_off = offsetof(struct hwrm_dbg_coredump_list_output,
151 data_len);
152
153 rc = bnxt_hwrm_dbg_dma_data(bp, req, &info);
154 if (!rc) {
155 coredump->data = info.dest_buf;
156 coredump->data_size = info.dest_buf_size;
157 coredump->total_segs = info.segs;
158 }
159 return rc;
160 }
161
162 static int bnxt_hwrm_dbg_coredump_initiate(struct bnxt *bp, u16 component_id,
163 u16 segment_id)
164 {
165 struct hwrm_dbg_coredump_initiate_input *req;
166 int rc;
167
168 rc = hwrm_req_init(bp, req, HWRM_DBG_COREDUMP_INITIATE);
169 if (rc)
170 return rc;
171
172 hwrm_req_timeout(bp, req, bp->hwrm_cmd_max_timeout);
173 req->component_id = cpu_to_le16(component_id);
174 req->segment_id = cpu_to_le16(segment_id);
175
176 return hwrm_req_send(bp, req);
177 }
178
179 static int bnxt_hwrm_dbg_coredump_retrieve(struct bnxt *bp, u16 component_id,
180 u16 segment_id, u32 *seg_len,
181 void *buf, u32 buf_len, u32 offset)
182 {
183 struct hwrm_dbg_coredump_retrieve_input *req;
184 struct bnxt_hwrm_dbg_dma_info info = {NULL};
185 int rc;
186
187 rc = hwrm_req_init(bp, req, HWRM_DBG_COREDUMP_RETRIEVE);
188 if (rc)
189 return rc;
190
191 req->component_id = cpu_to_le16(component_id);
192 req->segment_id = cpu_to_le16(segment_id);
193
194 info.dma_len = COREDUMP_RETRIEVE_BUF_LEN;
195 info.seq_off = offsetof(struct hwrm_dbg_coredump_retrieve_input,
196 seq_no);
197 info.data_len_off = offsetof(struct hwrm_dbg_coredump_retrieve_output,
198 data_len);
199 if (buf) {
200 info.dest_buf = buf + offset;
201 info.buf_len = buf_len;
202 info.seg_start = offset;
203 }
204
205 rc = bnxt_hwrm_dbg_dma_data(bp, req, &info);
206 if (!rc)
207 *seg_len = info.dest_buf_size;
208
209 return rc;
210 }
211
212 void
213 bnxt_fill_coredump_seg_hdr(struct bnxt *bp,
214 struct bnxt_coredump_segment_hdr *seg_hdr,
215 struct coredump_segment_record *seg_rec, u32 seg_len,
216 int status, u32 duration, u32 instance, u32 comp_id,
217 u32 seg_id)
218 {
219 memset(seg_hdr, 0, sizeof(*seg_hdr));
220 memcpy(seg_hdr->signature, "sEgM", 4);
221 if (seg_rec) {
222 seg_hdr->component_id = (__force __le32)seg_rec->component_id;
223 seg_hdr->segment_id = (__force __le32)seg_rec->segment_id;
224 seg_hdr->low_version = seg_rec->version_low;
225 seg_hdr->high_version = seg_rec->version_hi;
226 seg_hdr->flags = cpu_to_le32(seg_rec->compress_flags);
227 } else {
228 seg_hdr->component_id = cpu_to_le32(comp_id);
229 seg_hdr->segment_id = cpu_to_le32(seg_id);
230 }
231 seg_hdr->function_id = cpu_to_le16(bp->pdev->devfn);
232 seg_hdr->length = cpu_to_le32(seg_len);
233 seg_hdr->status = cpu_to_le32(status);
234 seg_hdr->duration = cpu_to_le32(duration);
235 seg_hdr->data_offset = cpu_to_le32(sizeof(*seg_hdr));
236 seg_hdr->instance = cpu_to_le32(instance);
237 }
238
239 static void bnxt_fill_cmdline(struct bnxt_coredump_record *record)
240 {
241 struct mm_struct *mm = current->mm;
242 int i, len, last = 0;
243
244 if (mm) {
245 len = min_t(int, mm->arg_end - mm->arg_start,
246 sizeof(record->commandline) - 1);
247 if (len && !copy_from_user(record->commandline,
248 (char __user *)mm->arg_start, len)) {
249 for (i = 0; i < len; i++) {
250 if (record->commandline[i])
251 last = i;
252 else
253 record->commandline[i] = ' ';
254 }
255 record->commandline[last + 1] = 0;
256 return;
257 }
258 }
259
260 strscpy(record->commandline, current->comm, TASK_COMM_LEN);
261 }
262
263 static void
264 bnxt_fill_coredump_record(struct bnxt *bp, struct bnxt_coredump_record *record,
265 time64_t start, s16 start_utc, u16 total_segs,
266 int status)
267 {
268 time64_t end = ktime_get_real_seconds();
269 u32 os_ver_major = 0, os_ver_minor = 0;
270 struct tm tm;
271
272 time64_to_tm(start, 0, &tm);
273 memset(record, 0, sizeof(*record));
274 memcpy(record->signature, "cOrE", 4);
275 record->flags = 0;
276 record->low_version = 0;
277 record->high_version = 1;
278 record->asic_state = 0;
279 strscpy(record->system_name, utsname()->nodename,
280 sizeof(record->system_name));
281 record->year = cpu_to_le16(tm.tm_year + 1900);
282 record->month = cpu_to_le16(tm.tm_mon + 1);
283 record->day = cpu_to_le16(tm.tm_mday);
284 record->hour = cpu_to_le16(tm.tm_hour);
285 record->minute = cpu_to_le16(tm.tm_min);
286 record->second = cpu_to_le16(tm.tm_sec);
287 record->utc_bias = cpu_to_le16(start_utc);
288 bnxt_fill_cmdline(record);
289 record->total_segments = cpu_to_le32(total_segs);
290
291 if (sscanf(utsname()->release, "%u.%u", &os_ver_major, &os_ver_minor) != 2)
292 netdev_warn(bp->dev, "Unknown OS release in coredump\n");
293 record->os_ver_major = cpu_to_le32(os_ver_major);
294 record->os_ver_minor = cpu_to_le32(os_ver_minor);
295
296 strscpy(record->os_name, utsname()->sysname, sizeof(record->os_name));
297 time64_to_tm(end, 0, &tm);
298 record->end_year = cpu_to_le16(tm.tm_year + 1900);
299 record->end_month = cpu_to_le16(tm.tm_mon + 1);
300 record->end_day = cpu_to_le16(tm.tm_mday);
301 record->end_hour = cpu_to_le16(tm.tm_hour);
302 record->end_minute = cpu_to_le16(tm.tm_min);
303 record->end_second = cpu_to_le16(tm.tm_sec);
304 record->end_utc_bias = cpu_to_le16(sys_tz.tz_minuteswest * 60);
305 record->asic_id1 = cpu_to_le32(bp->chip_num << 16 |
306 bp->ver_resp.chip_rev << 8 |
307 bp->ver_resp.chip_metal);
308 record->asic_id2 = 0;
309 record->coredump_status = cpu_to_le32(status);
310 record->ioctl_low_version = 0;
311 record->ioctl_high_version = 0;
312 }
313
314 static void bnxt_fill_drv_seg_record(struct bnxt *bp,
315 struct bnxt_driver_segment_record *record,
316 struct bnxt_ctx_mem_type *ctxm, u16 type)
317 {
318 struct bnxt_bs_trace_info *bs_trace = &bp->bs_trace[type];
319 u32 offset = 0;
320 int rc = 0;
321
322 rc = bnxt_dbg_hwrm_log_buffer_flush(bp, type, 0, &offset);
323 if (rc)
324 return;
325
326 bnxt_bs_trace_check_wrap(bs_trace, offset);
327 record->max_entries = cpu_to_le32(ctxm->max_entries);
328 record->entry_size = cpu_to_le32(ctxm->entry_size);
329 record->offset = cpu_to_le32(bs_trace->last_offset);
330 record->wrapped = bs_trace->wrapped;
331 }
332
333 static u32 bnxt_get_ctx_coredump(struct bnxt *bp, void *buf, u32 offset,
334 u32 *segs)
335 {
336 struct bnxt_driver_segment_record record = {};
337 struct bnxt_coredump_segment_hdr seg_hdr;
338 struct bnxt_ctx_mem_info *ctx = bp->ctx;
339 u32 comp_id = BNXT_DRV_COMP_ID;
340 void *data = NULL;
341 size_t len = 0;
342 u16 type;
343
344 *segs = 0;
345 if (!ctx)
346 return 0;
347
348 if (buf)
349 buf += offset;
350 for (type = 0 ; type <= BNXT_CTX_RIGP1; type++) {
351 struct bnxt_ctx_mem_type *ctxm = &ctx->ctx_arr[type];
352 bool trace = bnxt_bs_trace_avail(bp, type);
353 u32 seg_id = bnxt_bstore_to_seg_id[type];
354 size_t seg_len, extra_hlen = 0;
355
356 if (!ctxm->mem_valid || !seg_id)
357 continue;
358
359 if (trace)
360 extra_hlen = BNXT_SEG_RCD_LEN;
361 if (buf)
362 data = buf + BNXT_SEG_HDR_LEN + extra_hlen;
363 seg_len = bnxt_copy_ctx_mem(bp, ctxm, data, 0) + extra_hlen;
364 if (buf) {
365 bnxt_fill_coredump_seg_hdr(bp, &seg_hdr, NULL, seg_len,
366 0, 0, 0, comp_id, seg_id);
367 memcpy(buf, &seg_hdr, BNXT_SEG_HDR_LEN);
368 buf += BNXT_SEG_HDR_LEN;
369 if (trace) {
370 u16 trace_type = bnxt_bstore_to_trace[type];
371
372 bnxt_fill_drv_seg_record(bp, &record, ctxm,
373 trace_type);
374 memcpy(buf, &record, BNXT_SEG_RCD_LEN);
375 }
376 buf += seg_len;
377 }
378 len += BNXT_SEG_HDR_LEN + seg_len;
379 *segs += 1;
380 }
381 return len;
382 }
383
384 static int __bnxt_get_coredump(struct bnxt *bp, u16 dump_type, void *buf,
385 u32 *dump_len)
386 {
387 u32 ver_get_resp_len = sizeof(struct hwrm_ver_get_output);
388 u32 offset = 0, seg_hdr_len, seg_record_len, buf_len = 0;
389 struct coredump_segment_record *seg_record = NULL;
390 struct bnxt_coredump_segment_hdr seg_hdr;
391 struct bnxt_coredump coredump = {NULL};
392 time64_t start_time;
393 u16 start_utc;
394 int rc = 0, i;
395
396 if (buf)
397 buf_len = *dump_len;
398
399 start_time = ktime_get_real_seconds();
400 start_utc = sys_tz.tz_minuteswest * 60;
401 seg_hdr_len = sizeof(seg_hdr);
402
403 /* First segment should be hwrm_ver_get response.
404 * For hwrm_ver_get response Component id = 2 and Segment id = 0.
405 */
406 *dump_len = seg_hdr_len + ver_get_resp_len;
407 if (buf) {
408 bnxt_fill_coredump_seg_hdr(bp, &seg_hdr, NULL, ver_get_resp_len,
409 0, 0, 0, BNXT_VER_GET_COMP_ID, 0);
410 memcpy(buf + offset, &seg_hdr, seg_hdr_len);
411 offset += seg_hdr_len;
412 memcpy(buf + offset, &bp->ver_resp, ver_get_resp_len);
413 offset += ver_get_resp_len;
414 }
415
416 if (dump_type == BNXT_DUMP_DRIVER) {
417 u32 drv_len, segs = 0;
418
419 drv_len = bnxt_get_ctx_coredump(bp, buf, offset, &segs);
420 *dump_len += drv_len;
421 offset += drv_len;
422 if (buf)
423 coredump.total_segs += segs;
424 goto err;
425 }
426
427 seg_record_len = sizeof(*seg_record);
428 rc = bnxt_hwrm_dbg_coredump_list(bp, &coredump);
429 if (rc) {
430 netdev_err(bp->dev, "Failed to get coredump segment list\n");
431 goto err;
432 }
433
434 *dump_len += seg_hdr_len * coredump.total_segs;
435
436 seg_record = (struct coredump_segment_record *)coredump.data;
437 seg_record_len = sizeof(*seg_record);
438
439 for (i = 0; i < coredump.total_segs; i++) {
440 u16 comp_id = le16_to_cpu(seg_record->component_id);
441 u16 seg_id = le16_to_cpu(seg_record->segment_id);
442 u32 duration = 0, seg_len = 0;
443 unsigned long start, end;
444
445 if (buf && ((offset + seg_hdr_len) >
446 BNXT_COREDUMP_BUF_LEN(buf_len))) {
447 rc = -ENOBUFS;
448 goto err;
449 }
450
451 start = jiffies;
452
453 rc = bnxt_hwrm_dbg_coredump_initiate(bp, comp_id, seg_id);
454 if (rc) {
455 netdev_err(bp->dev,
456 "Failed to initiate coredump for seg = %d\n",
457 seg_record->segment_id);
458 goto next_seg;
459 }
460
461 /* Write segment data into the buffer */
462 rc = bnxt_hwrm_dbg_coredump_retrieve(bp, comp_id, seg_id,
463 &seg_len, buf, buf_len,
464 offset + seg_hdr_len);
465 if (rc && rc == -ENOBUFS)
466 goto err;
467 else if (rc)
468 netdev_err(bp->dev,
469 "Failed to retrieve coredump for seg = %d\n",
470 seg_record->segment_id);
471
472 next_seg:
473 end = jiffies;
474 duration = jiffies_to_msecs(end - start);
475 bnxt_fill_coredump_seg_hdr(bp, &seg_hdr, seg_record, seg_len,
476 rc, duration, 0, 0, 0);
477
478 if (buf) {
479 /* Write segment header into the buffer */
480 memcpy(buf + offset, &seg_hdr, seg_hdr_len);
481 offset += seg_hdr_len + seg_len;
482 }
483
484 *dump_len += seg_len;
485 seg_record =
486 (struct coredump_segment_record *)((u8 *)seg_record +
487 seg_record_len);
488 }
489
490 err:
491 if (buf)
492 bnxt_fill_coredump_record(bp, buf + offset, start_time,
493 start_utc, coredump.total_segs + 1,
494 rc);
495 kfree(coredump.data);
496 *dump_len += sizeof(struct bnxt_coredump_record);
497 if (rc == -ENOBUFS)
498 netdev_err(bp->dev, "Firmware returned large coredump buffer\n");
499 return rc;
500 }
501
502 static u32 bnxt_copy_crash_data(struct bnxt_ring_mem_info *rmem, void *buf,
503 u32 dump_len)
504 {
505 u32 data_copied = 0;
506 u32 data_len;
507 int i;
508
509 for (i = 0; i < rmem->nr_pages; i++) {
510 data_len = rmem->page_size;
511 if (data_copied + data_len > dump_len)
512 data_len = dump_len - data_copied;
513 memcpy(buf + data_copied, rmem->pg_arr[i], data_len);
514 data_copied += data_len;
515 if (data_copied >= dump_len)
516 break;
517 }
518 return data_copied;
519 }
520
521 static int bnxt_copy_crash_dump(struct bnxt *bp, void *buf, u32 dump_len)
522 {
523 struct bnxt_ring_mem_info *rmem;
524 u32 offset = 0;
525
526 if (!bp->fw_crash_mem)
527 return -ENOENT;
528
529 rmem = &bp->fw_crash_mem->ring_mem;
530
531 if (rmem->depth > 1) {
532 int i;
533
534 for (i = 0; i < rmem->nr_pages; i++) {
535 struct bnxt_ctx_pg_info *pg_tbl;
536
537 pg_tbl = bp->fw_crash_mem->ctx_pg_tbl[i];
538 offset += bnxt_copy_crash_data(&pg_tbl->ring_mem,
539 buf + offset,
540 dump_len - offset);
541 if (offset >= dump_len)
542 break;
543 }
544 } else {
545 bnxt_copy_crash_data(rmem, buf, dump_len);
546 }
547
548 return 0;
549 }
550
551 static bool bnxt_crash_dump_avail(struct bnxt *bp)
552 {
553 u32 sig = 0;
554
555 /* First 4 bytes(signature) of crash dump is always non-zero */
556 bnxt_copy_crash_dump(bp, &sig, sizeof(sig));
557 return !!sig;
558 }
559
560 int bnxt_get_coredump(struct bnxt *bp, u16 dump_type, void *buf, u32 *dump_len)
561 {
562 if (dump_type == BNXT_DUMP_CRASH) {
563 if (bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_HOST_DDR)
564 return bnxt_copy_crash_dump(bp, buf, *dump_len);
565 #ifdef CONFIG_TEE_BNXT_FW
566 else if (bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_SOC_DDR)
567 return tee_bnxt_copy_coredump(buf, 0, *dump_len);
568 #endif
569 else
570 return -EOPNOTSUPP;
571 } else {
572 return __bnxt_get_coredump(bp, dump_type, buf, dump_len);
573 }
574 }
575
576 int bnxt_hwrm_get_dump_len(struct bnxt *bp, u16 dump_type, u32 *dump_len)
577 {
578 struct hwrm_dbg_qcfg_output *resp;
579 struct hwrm_dbg_qcfg_input *req;
580 int rc, hdr_len = 0;
581
582 if (!(bp->fw_cap & BNXT_FW_CAP_DBG_QCAPS))
583 return -EOPNOTSUPP;
584
585 if (dump_type == BNXT_DUMP_CRASH &&
586 !(bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_SOC_DDR ||
587 (bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_HOST_DDR)))
588 return -EOPNOTSUPP;
589
590 rc = hwrm_req_init(bp, req, HWRM_DBG_QCFG);
591 if (rc)
592 return rc;
593
594 req->fid = cpu_to_le16(0xffff);
595 if (dump_type == BNXT_DUMP_CRASH) {
596 if (bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_SOC_DDR)
597 req->flags = cpu_to_le16(BNXT_DBG_FL_CR_DUMP_SIZE_SOC);
598 else
599 req->flags = cpu_to_le16(BNXT_DBG_FL_CR_DUMP_SIZE_HOST);
600 }
601
602 resp = hwrm_req_hold(bp, req);
603 rc = hwrm_req_send(bp, req);
604 if (rc)
605 goto get_dump_len_exit;
606
607 if (dump_type == BNXT_DUMP_CRASH) {
608 if (bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_SOC_DDR)
609 *dump_len = BNXT_CRASH_DUMP_LEN;
610 else
611 *dump_len = le32_to_cpu(resp->crashdump_size);
612 } else {
613 /* Driver adds coredump header and "HWRM_VER_GET response"
614 * segment additionally to coredump.
615 */
616 hdr_len = sizeof(struct bnxt_coredump_segment_hdr) +
617 sizeof(struct hwrm_ver_get_output) +
618 sizeof(struct bnxt_coredump_record);
619 *dump_len = le32_to_cpu(resp->coredump_size) + hdr_len;
620 }
621 if (*dump_len <= hdr_len)
622 rc = -EINVAL;
623
624 get_dump_len_exit:
625 hwrm_req_drop(bp, req);
626 return rc;
627 }
628
629 u32 bnxt_get_coredump_length(struct bnxt *bp, u16 dump_type)
630 {
631 u32 len = 0;
632
633 if (dump_type == BNXT_DUMP_CRASH &&
634 bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_HOST_DDR &&
635 bp->fw_crash_mem) {
636 if (!bnxt_crash_dump_avail(bp))
637 return 0;
638
639 return bp->fw_crash_len;
640 }
641
642 if (dump_type != BNXT_DUMP_DRIVER) {
643 if (!bnxt_hwrm_get_dump_len(bp, dump_type, &len))
644 return len;
645 }
646 if (dump_type != BNXT_DUMP_CRASH)
647 __bnxt_get_coredump(bp, dump_type, NULL, &len);
648
649 return len;
650 }
Kernel DRM miscellaneous fixes and cross-tree changes