2 * Copyright (c) 2013-2016, Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/highmem.h>
34 #include <linux/module.h>
35 #include <linux/errno.h>
36 #include <linux/pci.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/slab.h>
39 #include <linux/delay.h>
40 #include <linux/random.h>
41 #include <linux/io-mapping.h>
42 #include <linux/mlx5/driver.h>
43 #include <linux/debugfs.h>
45 #include "mlx5_core.h"
59 LONG_LIST_SIZE = (2ULL * 1024 * 1024 * 1024 / PAGE_SIZE) * 8 + 16 +
60 MLX5_CMD_DATA_BLOCK_SIZE,
61 MED_LIST_SIZE = 16 + MLX5_CMD_DATA_BLOCK_SIZE,
65 MLX5_CMD_DELIVERY_STAT_OK = 0x0,
66 MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR = 0x1,
67 MLX5_CMD_DELIVERY_STAT_TOK_ERR = 0x2,
68 MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR = 0x3,
69 MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR = 0x4,
70 MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR = 0x5,
71 MLX5_CMD_DELIVERY_STAT_FW_ERR = 0x6,
72 MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR = 0x7,
73 MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR = 0x8,
74 MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR = 0x9,
75 MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR = 0x10,
78 static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd,
79 struct mlx5_cmd_msg *in,
80 struct mlx5_cmd_msg *out,
81 void *uout, int uout_size,
83 void *context, int page_queue)
85 gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL;
86 struct mlx5_cmd_work_ent *ent;
88 ent = kzalloc(sizeof(*ent), alloc_flags);
90 return ERR_PTR(-ENOMEM);
95 ent->uout_size = uout_size;
97 ent->context = context;
99 ent->page_queue = page_queue;
104 static u8 alloc_token(struct mlx5_cmd *cmd)
108 spin_lock(&cmd->token_lock);
113 spin_unlock(&cmd->token_lock);
118 static int alloc_ent(struct mlx5_cmd *cmd)
123 spin_lock_irqsave(&cmd->alloc_lock, flags);
124 ret = find_first_bit(&cmd->bitmask, cmd->max_reg_cmds);
125 if (ret < cmd->max_reg_cmds)
126 clear_bit(ret, &cmd->bitmask);
127 spin_unlock_irqrestore(&cmd->alloc_lock, flags);
129 return ret < cmd->max_reg_cmds ? ret : -ENOMEM;
132 static void free_ent(struct mlx5_cmd *cmd, int idx)
136 spin_lock_irqsave(&cmd->alloc_lock, flags);
137 set_bit(idx, &cmd->bitmask);
138 spin_unlock_irqrestore(&cmd->alloc_lock, flags);
141 static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx)
143 return cmd->cmd_buf + (idx << cmd->log_stride);
146 static u8 xor8_buf(void *buf, int len)
152 for (i = 0; i < len; i++)
158 static int verify_block_sig(struct mlx5_cmd_prot_block *block)
160 if (xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 1) != 0xff)
163 if (xor8_buf(block, sizeof(*block)) != 0xff)
169 static void calc_block_sig(struct mlx5_cmd_prot_block *block, u8 token,
172 block->token = token;
174 block->ctrl_sig = ~xor8_buf(block->rsvd0, sizeof(*block) -
175 sizeof(block->data) - 2);
176 block->sig = ~xor8_buf(block, sizeof(*block) - 1);
180 static void calc_chain_sig(struct mlx5_cmd_msg *msg, u8 token, int csum)
182 struct mlx5_cmd_mailbox *next = msg->next;
185 calc_block_sig(next->buf, token, csum);
190 static void set_signature(struct mlx5_cmd_work_ent *ent, int csum)
192 ent->lay->sig = ~xor8_buf(ent->lay, sizeof(*ent->lay));
193 calc_chain_sig(ent->in, ent->token, csum);
194 calc_chain_sig(ent->out, ent->token, csum);
197 static void poll_timeout(struct mlx5_cmd_work_ent *ent)
199 unsigned long poll_end = jiffies + msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000);
203 own = ent->lay->status_own;
204 if (!(own & CMD_OWNER_HW)) {
208 usleep_range(5000, 10000);
209 } while (time_before(jiffies, poll_end));
211 ent->ret = -ETIMEDOUT;
214 static void free_cmd(struct mlx5_cmd_work_ent *ent)
220 static int verify_signature(struct mlx5_cmd_work_ent *ent)
222 struct mlx5_cmd_mailbox *next = ent->out->next;
226 sig = xor8_buf(ent->lay, sizeof(*ent->lay));
231 err = verify_block_sig(next->buf);
241 static void dump_buf(void *buf, int size, int data_only, int offset)
246 for (i = 0; i < size; i += 16) {
247 pr_debug("%03x: %08x %08x %08x %08x\n", offset, be32_to_cpu(p[0]),
248 be32_to_cpu(p[1]), be32_to_cpu(p[2]),
258 MLX5_DRIVER_STATUS_ABORTED = 0xfe,
259 MLX5_DRIVER_SYND = 0xbadd00de,
262 static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op,
263 u32 *synd, u8 *status)
269 case MLX5_CMD_OP_TEARDOWN_HCA:
270 case MLX5_CMD_OP_DISABLE_HCA:
271 case MLX5_CMD_OP_MANAGE_PAGES:
272 case MLX5_CMD_OP_DESTROY_MKEY:
273 case MLX5_CMD_OP_DESTROY_EQ:
274 case MLX5_CMD_OP_DESTROY_CQ:
275 case MLX5_CMD_OP_DESTROY_QP:
276 case MLX5_CMD_OP_DESTROY_PSV:
277 case MLX5_CMD_OP_DESTROY_SRQ:
278 case MLX5_CMD_OP_DESTROY_XRC_SRQ:
279 case MLX5_CMD_OP_DESTROY_DCT:
280 case MLX5_CMD_OP_DEALLOC_Q_COUNTER:
281 case MLX5_CMD_OP_DEALLOC_PD:
282 case MLX5_CMD_OP_DEALLOC_UAR:
283 case MLX5_CMD_OP_DETTACH_FROM_MCG:
284 case MLX5_CMD_OP_DEALLOC_XRCD:
285 case MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN:
286 case MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT:
287 case MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY:
288 case MLX5_CMD_OP_DESTROY_TIR:
289 case MLX5_CMD_OP_DESTROY_SQ:
290 case MLX5_CMD_OP_DESTROY_RQ:
291 case MLX5_CMD_OP_DESTROY_RMP:
292 case MLX5_CMD_OP_DESTROY_TIS:
293 case MLX5_CMD_OP_DESTROY_RQT:
294 case MLX5_CMD_OP_DESTROY_FLOW_TABLE:
295 case MLX5_CMD_OP_DESTROY_FLOW_GROUP:
296 case MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY:
297 case MLX5_CMD_OP_DEALLOC_FLOW_COUNTER:
298 return MLX5_CMD_STAT_OK;
300 case MLX5_CMD_OP_QUERY_HCA_CAP:
301 case MLX5_CMD_OP_QUERY_ADAPTER:
302 case MLX5_CMD_OP_INIT_HCA:
303 case MLX5_CMD_OP_ENABLE_HCA:
304 case MLX5_CMD_OP_QUERY_PAGES:
305 case MLX5_CMD_OP_SET_HCA_CAP:
306 case MLX5_CMD_OP_QUERY_ISSI:
307 case MLX5_CMD_OP_SET_ISSI:
308 case MLX5_CMD_OP_CREATE_MKEY:
309 case MLX5_CMD_OP_QUERY_MKEY:
310 case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS:
311 case MLX5_CMD_OP_PAGE_FAULT_RESUME:
312 case MLX5_CMD_OP_CREATE_EQ:
313 case MLX5_CMD_OP_QUERY_EQ:
314 case MLX5_CMD_OP_GEN_EQE:
315 case MLX5_CMD_OP_CREATE_CQ:
316 case MLX5_CMD_OP_QUERY_CQ:
317 case MLX5_CMD_OP_MODIFY_CQ:
318 case MLX5_CMD_OP_CREATE_QP:
319 case MLX5_CMD_OP_RST2INIT_QP:
320 case MLX5_CMD_OP_INIT2RTR_QP:
321 case MLX5_CMD_OP_RTR2RTS_QP:
322 case MLX5_CMD_OP_RTS2RTS_QP:
323 case MLX5_CMD_OP_SQERR2RTS_QP:
324 case MLX5_CMD_OP_2ERR_QP:
325 case MLX5_CMD_OP_2RST_QP:
326 case MLX5_CMD_OP_QUERY_QP:
327 case MLX5_CMD_OP_SQD_RTS_QP:
328 case MLX5_CMD_OP_INIT2INIT_QP:
329 case MLX5_CMD_OP_CREATE_PSV:
330 case MLX5_CMD_OP_CREATE_SRQ:
331 case MLX5_CMD_OP_QUERY_SRQ:
332 case MLX5_CMD_OP_ARM_RQ:
333 case MLX5_CMD_OP_CREATE_XRC_SRQ:
334 case MLX5_CMD_OP_QUERY_XRC_SRQ:
335 case MLX5_CMD_OP_ARM_XRC_SRQ:
336 case MLX5_CMD_OP_CREATE_DCT:
337 case MLX5_CMD_OP_DRAIN_DCT:
338 case MLX5_CMD_OP_QUERY_DCT:
339 case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
340 case MLX5_CMD_OP_QUERY_VPORT_STATE:
341 case MLX5_CMD_OP_MODIFY_VPORT_STATE:
342 case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT:
343 case MLX5_CMD_OP_MODIFY_ESW_VPORT_CONTEXT:
344 case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT:
345 case MLX5_CMD_OP_MODIFY_NIC_VPORT_CONTEXT:
346 case MLX5_CMD_OP_QUERY_ROCE_ADDRESS:
347 case MLX5_CMD_OP_SET_ROCE_ADDRESS:
348 case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT:
349 case MLX5_CMD_OP_MODIFY_HCA_VPORT_CONTEXT:
350 case MLX5_CMD_OP_QUERY_HCA_VPORT_GID:
351 case MLX5_CMD_OP_QUERY_HCA_VPORT_PKEY:
352 case MLX5_CMD_OP_QUERY_VPORT_COUNTER:
353 case MLX5_CMD_OP_ALLOC_Q_COUNTER:
354 case MLX5_CMD_OP_QUERY_Q_COUNTER:
355 case MLX5_CMD_OP_ALLOC_PD:
356 case MLX5_CMD_OP_ALLOC_UAR:
357 case MLX5_CMD_OP_CONFIG_INT_MODERATION:
358 case MLX5_CMD_OP_ACCESS_REG:
359 case MLX5_CMD_OP_ATTACH_TO_MCG:
360 case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG:
361 case MLX5_CMD_OP_MAD_IFC:
362 case MLX5_CMD_OP_QUERY_MAD_DEMUX:
363 case MLX5_CMD_OP_SET_MAD_DEMUX:
364 case MLX5_CMD_OP_NOP:
365 case MLX5_CMD_OP_ALLOC_XRCD:
366 case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
367 case MLX5_CMD_OP_QUERY_CONG_STATUS:
368 case MLX5_CMD_OP_MODIFY_CONG_STATUS:
369 case MLX5_CMD_OP_QUERY_CONG_PARAMS:
370 case MLX5_CMD_OP_MODIFY_CONG_PARAMS:
371 case MLX5_CMD_OP_QUERY_CONG_STATISTICS:
372 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
373 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
374 case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
375 case MLX5_CMD_OP_CREATE_TIR:
376 case MLX5_CMD_OP_MODIFY_TIR:
377 case MLX5_CMD_OP_QUERY_TIR:
378 case MLX5_CMD_OP_CREATE_SQ:
379 case MLX5_CMD_OP_MODIFY_SQ:
380 case MLX5_CMD_OP_QUERY_SQ:
381 case MLX5_CMD_OP_CREATE_RQ:
382 case MLX5_CMD_OP_MODIFY_RQ:
383 case MLX5_CMD_OP_QUERY_RQ:
384 case MLX5_CMD_OP_CREATE_RMP:
385 case MLX5_CMD_OP_MODIFY_RMP:
386 case MLX5_CMD_OP_QUERY_RMP:
387 case MLX5_CMD_OP_CREATE_TIS:
388 case MLX5_CMD_OP_MODIFY_TIS:
389 case MLX5_CMD_OP_QUERY_TIS:
390 case MLX5_CMD_OP_CREATE_RQT:
391 case MLX5_CMD_OP_MODIFY_RQT:
392 case MLX5_CMD_OP_QUERY_RQT:
393 case MLX5_CMD_OP_CREATE_FLOW_TABLE:
394 case MLX5_CMD_OP_QUERY_FLOW_TABLE:
395 case MLX5_CMD_OP_CREATE_FLOW_GROUP:
396 case MLX5_CMD_OP_QUERY_FLOW_GROUP:
397 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
398 case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
399 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
400 case MLX5_CMD_OP_QUERY_FLOW_COUNTER:
401 *status = MLX5_DRIVER_STATUS_ABORTED;
402 *synd = MLX5_DRIVER_SYND;
405 mlx5_core_err(dev, "Unknown FW command (%d)\n", op);
410 const char *mlx5_command_str(int command)
412 #define MLX5_COMMAND_STR_CASE(__cmd) case MLX5_CMD_OP_ ## __cmd: return #__cmd
415 MLX5_COMMAND_STR_CASE(QUERY_HCA_CAP);
416 MLX5_COMMAND_STR_CASE(QUERY_ADAPTER);
417 MLX5_COMMAND_STR_CASE(INIT_HCA);
418 MLX5_COMMAND_STR_CASE(TEARDOWN_HCA);
419 MLX5_COMMAND_STR_CASE(ENABLE_HCA);
420 MLX5_COMMAND_STR_CASE(DISABLE_HCA);
421 MLX5_COMMAND_STR_CASE(QUERY_PAGES);
422 MLX5_COMMAND_STR_CASE(MANAGE_PAGES);
423 MLX5_COMMAND_STR_CASE(SET_HCA_CAP);
424 MLX5_COMMAND_STR_CASE(QUERY_ISSI);
425 MLX5_COMMAND_STR_CASE(SET_ISSI);
426 MLX5_COMMAND_STR_CASE(CREATE_MKEY);
427 MLX5_COMMAND_STR_CASE(QUERY_MKEY);
428 MLX5_COMMAND_STR_CASE(DESTROY_MKEY);
429 MLX5_COMMAND_STR_CASE(QUERY_SPECIAL_CONTEXTS);
430 MLX5_COMMAND_STR_CASE(PAGE_FAULT_RESUME);
431 MLX5_COMMAND_STR_CASE(CREATE_EQ);
432 MLX5_COMMAND_STR_CASE(DESTROY_EQ);
433 MLX5_COMMAND_STR_CASE(QUERY_EQ);
434 MLX5_COMMAND_STR_CASE(GEN_EQE);
435 MLX5_COMMAND_STR_CASE(CREATE_CQ);
436 MLX5_COMMAND_STR_CASE(DESTROY_CQ);
437 MLX5_COMMAND_STR_CASE(QUERY_CQ);
438 MLX5_COMMAND_STR_CASE(MODIFY_CQ);
439 MLX5_COMMAND_STR_CASE(CREATE_QP);
440 MLX5_COMMAND_STR_CASE(DESTROY_QP);
441 MLX5_COMMAND_STR_CASE(RST2INIT_QP);
442 MLX5_COMMAND_STR_CASE(INIT2RTR_QP);
443 MLX5_COMMAND_STR_CASE(RTR2RTS_QP);
444 MLX5_COMMAND_STR_CASE(RTS2RTS_QP);
445 MLX5_COMMAND_STR_CASE(SQERR2RTS_QP);
446 MLX5_COMMAND_STR_CASE(2ERR_QP);
447 MLX5_COMMAND_STR_CASE(2RST_QP);
448 MLX5_COMMAND_STR_CASE(QUERY_QP);
449 MLX5_COMMAND_STR_CASE(SQD_RTS_QP);
450 MLX5_COMMAND_STR_CASE(INIT2INIT_QP);
451 MLX5_COMMAND_STR_CASE(CREATE_PSV);
452 MLX5_COMMAND_STR_CASE(DESTROY_PSV);
453 MLX5_COMMAND_STR_CASE(CREATE_SRQ);
454 MLX5_COMMAND_STR_CASE(DESTROY_SRQ);
455 MLX5_COMMAND_STR_CASE(QUERY_SRQ);
456 MLX5_COMMAND_STR_CASE(ARM_RQ);
457 MLX5_COMMAND_STR_CASE(CREATE_XRC_SRQ);
458 MLX5_COMMAND_STR_CASE(DESTROY_XRC_SRQ);
459 MLX5_COMMAND_STR_CASE(QUERY_XRC_SRQ);
460 MLX5_COMMAND_STR_CASE(ARM_XRC_SRQ);
461 MLX5_COMMAND_STR_CASE(CREATE_DCT);
462 MLX5_COMMAND_STR_CASE(DESTROY_DCT);
463 MLX5_COMMAND_STR_CASE(DRAIN_DCT);
464 MLX5_COMMAND_STR_CASE(QUERY_DCT);
465 MLX5_COMMAND_STR_CASE(ARM_DCT_FOR_KEY_VIOLATION);
466 MLX5_COMMAND_STR_CASE(QUERY_VPORT_STATE);
467 MLX5_COMMAND_STR_CASE(MODIFY_VPORT_STATE);
468 MLX5_COMMAND_STR_CASE(QUERY_ESW_VPORT_CONTEXT);
469 MLX5_COMMAND_STR_CASE(MODIFY_ESW_VPORT_CONTEXT);
470 MLX5_COMMAND_STR_CASE(QUERY_NIC_VPORT_CONTEXT);
471 MLX5_COMMAND_STR_CASE(MODIFY_NIC_VPORT_CONTEXT);
472 MLX5_COMMAND_STR_CASE(QUERY_ROCE_ADDRESS);
473 MLX5_COMMAND_STR_CASE(SET_ROCE_ADDRESS);
474 MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_CONTEXT);
475 MLX5_COMMAND_STR_CASE(MODIFY_HCA_VPORT_CONTEXT);
476 MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_GID);
477 MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_PKEY);
478 MLX5_COMMAND_STR_CASE(QUERY_VPORT_COUNTER);
479 MLX5_COMMAND_STR_CASE(ALLOC_Q_COUNTER);
480 MLX5_COMMAND_STR_CASE(DEALLOC_Q_COUNTER);
481 MLX5_COMMAND_STR_CASE(QUERY_Q_COUNTER);
482 MLX5_COMMAND_STR_CASE(ALLOC_PD);
483 MLX5_COMMAND_STR_CASE(DEALLOC_PD);
484 MLX5_COMMAND_STR_CASE(ALLOC_UAR);
485 MLX5_COMMAND_STR_CASE(DEALLOC_UAR);
486 MLX5_COMMAND_STR_CASE(CONFIG_INT_MODERATION);
487 MLX5_COMMAND_STR_CASE(ACCESS_REG);
488 MLX5_COMMAND_STR_CASE(ATTACH_TO_MCG);
489 MLX5_COMMAND_STR_CASE(DETTACH_FROM_MCG);
490 MLX5_COMMAND_STR_CASE(GET_DROPPED_PACKET_LOG);
491 MLX5_COMMAND_STR_CASE(MAD_IFC);
492 MLX5_COMMAND_STR_CASE(QUERY_MAD_DEMUX);
493 MLX5_COMMAND_STR_CASE(SET_MAD_DEMUX);
494 MLX5_COMMAND_STR_CASE(NOP);
495 MLX5_COMMAND_STR_CASE(ALLOC_XRCD);
496 MLX5_COMMAND_STR_CASE(DEALLOC_XRCD);
497 MLX5_COMMAND_STR_CASE(ALLOC_TRANSPORT_DOMAIN);
498 MLX5_COMMAND_STR_CASE(DEALLOC_TRANSPORT_DOMAIN);
499 MLX5_COMMAND_STR_CASE(QUERY_CONG_STATUS);
500 MLX5_COMMAND_STR_CASE(MODIFY_CONG_STATUS);
501 MLX5_COMMAND_STR_CASE(QUERY_CONG_PARAMS);
502 MLX5_COMMAND_STR_CASE(MODIFY_CONG_PARAMS);
503 MLX5_COMMAND_STR_CASE(QUERY_CONG_STATISTICS);
504 MLX5_COMMAND_STR_CASE(ADD_VXLAN_UDP_DPORT);
505 MLX5_COMMAND_STR_CASE(DELETE_VXLAN_UDP_DPORT);
506 MLX5_COMMAND_STR_CASE(SET_L2_TABLE_ENTRY);
507 MLX5_COMMAND_STR_CASE(QUERY_L2_TABLE_ENTRY);
508 MLX5_COMMAND_STR_CASE(DELETE_L2_TABLE_ENTRY);
509 MLX5_COMMAND_STR_CASE(SET_WOL_ROL);
510 MLX5_COMMAND_STR_CASE(QUERY_WOL_ROL);
511 MLX5_COMMAND_STR_CASE(CREATE_TIR);
512 MLX5_COMMAND_STR_CASE(MODIFY_TIR);
513 MLX5_COMMAND_STR_CASE(DESTROY_TIR);
514 MLX5_COMMAND_STR_CASE(QUERY_TIR);
515 MLX5_COMMAND_STR_CASE(CREATE_SQ);
516 MLX5_COMMAND_STR_CASE(MODIFY_SQ);
517 MLX5_COMMAND_STR_CASE(DESTROY_SQ);
518 MLX5_COMMAND_STR_CASE(QUERY_SQ);
519 MLX5_COMMAND_STR_CASE(CREATE_RQ);
520 MLX5_COMMAND_STR_CASE(MODIFY_RQ);
521 MLX5_COMMAND_STR_CASE(DESTROY_RQ);
522 MLX5_COMMAND_STR_CASE(QUERY_RQ);
523 MLX5_COMMAND_STR_CASE(CREATE_RMP);
524 MLX5_COMMAND_STR_CASE(MODIFY_RMP);
525 MLX5_COMMAND_STR_CASE(DESTROY_RMP);
526 MLX5_COMMAND_STR_CASE(QUERY_RMP);
527 MLX5_COMMAND_STR_CASE(CREATE_TIS);
528 MLX5_COMMAND_STR_CASE(MODIFY_TIS);
529 MLX5_COMMAND_STR_CASE(DESTROY_TIS);
530 MLX5_COMMAND_STR_CASE(QUERY_TIS);
531 MLX5_COMMAND_STR_CASE(CREATE_RQT);
532 MLX5_COMMAND_STR_CASE(MODIFY_RQT);
533 MLX5_COMMAND_STR_CASE(DESTROY_RQT);
534 MLX5_COMMAND_STR_CASE(QUERY_RQT);
535 MLX5_COMMAND_STR_CASE(SET_FLOW_TABLE_ROOT);
536 MLX5_COMMAND_STR_CASE(CREATE_FLOW_TABLE);
537 MLX5_COMMAND_STR_CASE(DESTROY_FLOW_TABLE);
538 MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE);
539 MLX5_COMMAND_STR_CASE(CREATE_FLOW_GROUP);
540 MLX5_COMMAND_STR_CASE(DESTROY_FLOW_GROUP);
541 MLX5_COMMAND_STR_CASE(QUERY_FLOW_GROUP);
542 MLX5_COMMAND_STR_CASE(SET_FLOW_TABLE_ENTRY);
543 MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE_ENTRY);
544 MLX5_COMMAND_STR_CASE(DELETE_FLOW_TABLE_ENTRY);
545 MLX5_COMMAND_STR_CASE(ALLOC_FLOW_COUNTER);
546 MLX5_COMMAND_STR_CASE(DEALLOC_FLOW_COUNTER);
547 MLX5_COMMAND_STR_CASE(QUERY_FLOW_COUNTER);
548 MLX5_COMMAND_STR_CASE(MODIFY_FLOW_TABLE);
549 default: return "unknown command opcode";
553 static void dump_command(struct mlx5_core_dev *dev,
554 struct mlx5_cmd_work_ent *ent, int input)
556 u16 op = be16_to_cpu(((struct mlx5_inbox_hdr *)(ent->lay->in))->opcode);
557 struct mlx5_cmd_msg *msg = input ? ent->in : ent->out;
558 struct mlx5_cmd_mailbox *next = msg->next;
563 data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA));
566 mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA,
567 "dump command data %s(0x%x) %s\n",
568 mlx5_command_str(op), op,
569 input ? "INPUT" : "OUTPUT");
571 mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n",
572 mlx5_command_str(op), op,
573 input ? "INPUT" : "OUTPUT");
577 dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset);
578 offset += sizeof(ent->lay->in);
580 dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset);
581 offset += sizeof(ent->lay->out);
584 dump_buf(ent->lay, sizeof(*ent->lay), 0, offset);
585 offset += sizeof(*ent->lay);
588 while (next && offset < msg->len) {
590 dump_len = min_t(int, MLX5_CMD_DATA_BLOCK_SIZE, msg->len - offset);
591 dump_buf(next->buf, dump_len, 1, offset);
592 offset += MLX5_CMD_DATA_BLOCK_SIZE;
594 mlx5_core_dbg(dev, "command block:\n");
595 dump_buf(next->buf, sizeof(struct mlx5_cmd_prot_block), 0, offset);
596 offset += sizeof(struct mlx5_cmd_prot_block);
605 static void cmd_work_handler(struct work_struct *work)
607 struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work);
608 struct mlx5_cmd *cmd = ent->cmd;
609 struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd);
610 struct mlx5_cmd_layout *lay;
611 struct semaphore *sem;
614 sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem;
616 if (!ent->page_queue) {
617 ent->idx = alloc_ent(cmd);
619 mlx5_core_err(dev, "failed to allocate command entry\n");
624 ent->idx = cmd->max_reg_cmds;
625 spin_lock_irqsave(&cmd->alloc_lock, flags);
626 clear_bit(ent->idx, &cmd->bitmask);
627 spin_unlock_irqrestore(&cmd->alloc_lock, flags);
630 ent->token = alloc_token(cmd);
631 cmd->ent_arr[ent->idx] = ent;
632 lay = get_inst(cmd, ent->idx);
634 memset(lay, 0, sizeof(*lay));
635 memcpy(lay->in, ent->in->first.data, sizeof(lay->in));
636 ent->op = be32_to_cpu(lay->in[0]) >> 16;
638 lay->in_ptr = cpu_to_be64(ent->in->next->dma);
639 lay->inlen = cpu_to_be32(ent->in->len);
641 lay->out_ptr = cpu_to_be64(ent->out->next->dma);
642 lay->outlen = cpu_to_be32(ent->out->len);
643 lay->type = MLX5_PCI_CMD_XPORT;
644 lay->token = ent->token;
645 lay->status_own = CMD_OWNER_HW;
646 set_signature(ent, !cmd->checksum_disabled);
647 dump_command(dev, ent, 1);
648 ent->ts1 = ktime_get_ns();
650 /* ring doorbell after the descriptor is valid */
651 mlx5_core_dbg(dev, "writing 0x%x to command doorbell\n", 1 << ent->idx);
653 iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell);
655 /* if not in polling don't use ent after this point */
656 if (cmd->mode == CMD_MODE_POLLING) {
658 /* make sure we read the descriptor after ownership is SW */
660 mlx5_cmd_comp_handler(dev, 1UL << ent->idx);
664 static const char *deliv_status_to_str(u8 status)
667 case MLX5_CMD_DELIVERY_STAT_OK:
669 case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR:
670 return "signature error";
671 case MLX5_CMD_DELIVERY_STAT_TOK_ERR:
672 return "token error";
673 case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR:
674 return "bad block number";
675 case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR:
676 return "output pointer not aligned to block size";
677 case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR:
678 return "input pointer not aligned to block size";
679 case MLX5_CMD_DELIVERY_STAT_FW_ERR:
680 return "firmware internal error";
681 case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR:
682 return "command input length error";
683 case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR:
684 return "command ouput length error";
685 case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR:
686 return "reserved fields not cleared";
687 case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR:
688 return "bad command descriptor type";
690 return "unknown status code";
694 static u16 msg_to_opcode(struct mlx5_cmd_msg *in)
696 struct mlx5_inbox_hdr *hdr = (struct mlx5_inbox_hdr *)(in->first.data);
698 return be16_to_cpu(hdr->opcode);
701 static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent)
703 unsigned long timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC);
704 struct mlx5_cmd *cmd = &dev->cmd;
707 if (cmd->mode == CMD_MODE_POLLING) {
708 wait_for_completion(&ent->done);
711 if (!wait_for_completion_timeout(&ent->done, timeout))
716 if (err == -ETIMEDOUT) {
717 mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n",
718 mlx5_command_str(msg_to_opcode(ent->in)),
719 msg_to_opcode(ent->in));
721 mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n",
722 err, deliv_status_to_str(ent->status), ent->status);
727 static __be32 *get_synd_ptr(struct mlx5_outbox_hdr *out)
729 return &out->syndrome;
732 static u8 *get_status_ptr(struct mlx5_outbox_hdr *out)
738 * 1. Callback functions may not sleep
739 * 2. page queue commands do not support asynchrous completion
741 static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
742 struct mlx5_cmd_msg *out, void *uout, int uout_size,
743 mlx5_cmd_cbk_t callback,
744 void *context, int page_queue, u8 *status)
746 struct mlx5_cmd *cmd = &dev->cmd;
747 struct mlx5_cmd_work_ent *ent;
748 struct mlx5_cmd_stats *stats;
753 if (callback && page_queue)
756 ent = alloc_cmd(cmd, in, out, uout, uout_size, callback, context,
762 init_completion(&ent->done);
764 INIT_WORK(&ent->work, cmd_work_handler);
766 cmd_work_handler(&ent->work);
767 } else if (!queue_work(cmd->wq, &ent->work)) {
768 mlx5_core_warn(dev, "failed to queue work\n");
774 err = wait_func(dev, ent);
775 if (err == -ETIMEDOUT)
778 ds = ent->ts2 - ent->ts1;
779 op = be16_to_cpu(((struct mlx5_inbox_hdr *)in->first.data)->opcode);
780 if (op < ARRAY_SIZE(cmd->stats)) {
781 stats = &cmd->stats[op];
782 spin_lock_irq(&stats->lock);
785 spin_unlock_irq(&stats->lock);
787 mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME,
788 "fw exec time for %s is %lld nsec\n",
789 mlx5_command_str(op), ds);
790 *status = ent->status;
802 static ssize_t dbg_write(struct file *filp, const char __user *buf,
803 size_t count, loff_t *pos)
805 struct mlx5_core_dev *dev = filp->private_data;
806 struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
810 if (!dbg->in_msg || !dbg->out_msg)
813 if (copy_from_user(lbuf, buf, sizeof(lbuf)))
816 lbuf[sizeof(lbuf) - 1] = 0;
818 if (strcmp(lbuf, "go"))
821 err = mlx5_cmd_exec(dev, dbg->in_msg, dbg->inlen, dbg->out_msg, dbg->outlen);
823 return err ? err : count;
827 static const struct file_operations fops = {
828 .owner = THIS_MODULE,
833 static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size)
835 struct mlx5_cmd_prot_block *block;
836 struct mlx5_cmd_mailbox *next;
842 copy = min_t(int, size, sizeof(to->first.data));
843 memcpy(to->first.data, from, copy);
854 copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE);
856 memcpy(block->data, from, copy);
865 static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size)
867 struct mlx5_cmd_prot_block *block;
868 struct mlx5_cmd_mailbox *next;
874 copy = min_t(int, size, sizeof(from->first.data));
875 memcpy(to, from->first.data, copy);
886 copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE);
889 memcpy(to, block->data, copy);
898 static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev,
901 struct mlx5_cmd_mailbox *mailbox;
903 mailbox = kmalloc(sizeof(*mailbox), flags);
905 return ERR_PTR(-ENOMEM);
907 mailbox->buf = pci_pool_alloc(dev->cmd.pool, flags,
910 mlx5_core_dbg(dev, "failed allocation\n");
912 return ERR_PTR(-ENOMEM);
914 memset(mailbox->buf, 0, sizeof(struct mlx5_cmd_prot_block));
915 mailbox->next = NULL;
920 static void free_cmd_box(struct mlx5_core_dev *dev,
921 struct mlx5_cmd_mailbox *mailbox)
923 pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
927 static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev,
928 gfp_t flags, int size)
930 struct mlx5_cmd_mailbox *tmp, *head = NULL;
931 struct mlx5_cmd_prot_block *block;
932 struct mlx5_cmd_msg *msg;
938 msg = kzalloc(sizeof(*msg), flags);
940 return ERR_PTR(-ENOMEM);
942 blen = size - min_t(int, sizeof(msg->first.data), size);
943 n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) / MLX5_CMD_DATA_BLOCK_SIZE;
945 for (i = 0; i < n; i++) {
946 tmp = alloc_cmd_box(dev, flags);
948 mlx5_core_warn(dev, "failed allocating block\n");
955 block->next = cpu_to_be64(tmp->next ? tmp->next->dma : 0);
956 block->block_num = cpu_to_be32(n - i - 1);
966 free_cmd_box(dev, head);
974 static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev,
975 struct mlx5_cmd_msg *msg)
977 struct mlx5_cmd_mailbox *head = msg->next;
978 struct mlx5_cmd_mailbox *next;
982 free_cmd_box(dev, head);
988 static ssize_t data_write(struct file *filp, const char __user *buf,
989 size_t count, loff_t *pos)
991 struct mlx5_core_dev *dev = filp->private_data;
992 struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
1003 ptr = kzalloc(count, GFP_KERNEL);
1007 if (copy_from_user(ptr, buf, count)) {
1023 static ssize_t data_read(struct file *filp, char __user *buf, size_t count,
1026 struct mlx5_core_dev *dev = filp->private_data;
1027 struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
1036 copy = min_t(int, count, dbg->outlen);
1037 if (copy_to_user(buf, dbg->out_msg, copy))
1045 static const struct file_operations dfops = {
1046 .owner = THIS_MODULE,
1047 .open = simple_open,
1048 .write = data_write,
1052 static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count,
1055 struct mlx5_core_dev *dev = filp->private_data;
1056 struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
1063 err = snprintf(outlen, sizeof(outlen), "%d", dbg->outlen);
1067 if (copy_to_user(buf, &outlen, err))
1075 static ssize_t outlen_write(struct file *filp, const char __user *buf,
1076 size_t count, loff_t *pos)
1078 struct mlx5_core_dev *dev = filp->private_data;
1079 struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
1085 if (*pos != 0 || count > 6)
1088 kfree(dbg->out_msg);
1089 dbg->out_msg = NULL;
1092 if (copy_from_user(outlen_str, buf, count))
1097 err = sscanf(outlen_str, "%d", &outlen);
1101 ptr = kzalloc(outlen, GFP_KERNEL);
1106 dbg->outlen = outlen;
1113 static const struct file_operations olfops = {
1114 .owner = THIS_MODULE,
1115 .open = simple_open,
1116 .write = outlen_write,
1117 .read = outlen_read,
1120 static void set_wqname(struct mlx5_core_dev *dev)
1122 struct mlx5_cmd *cmd = &dev->cmd;
1124 snprintf(cmd->wq_name, sizeof(cmd->wq_name), "mlx5_cmd_%s",
1125 dev_name(&dev->pdev->dev));
1128 static void clean_debug_files(struct mlx5_core_dev *dev)
1130 struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
1132 if (!mlx5_debugfs_root)
1135 mlx5_cmdif_debugfs_cleanup(dev);
1136 debugfs_remove_recursive(dbg->dbg_root);
1139 static int create_debugfs_files(struct mlx5_core_dev *dev)
1141 struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
1144 if (!mlx5_debugfs_root)
1147 dbg->dbg_root = debugfs_create_dir("cmd", dev->priv.dbg_root);
1151 dbg->dbg_in = debugfs_create_file("in", 0400, dbg->dbg_root,
1156 dbg->dbg_out = debugfs_create_file("out", 0200, dbg->dbg_root,
1161 dbg->dbg_outlen = debugfs_create_file("out_len", 0600, dbg->dbg_root,
1163 if (!dbg->dbg_outlen)
1166 dbg->dbg_status = debugfs_create_u8("status", 0600, dbg->dbg_root,
1168 if (!dbg->dbg_status)
1171 dbg->dbg_run = debugfs_create_file("run", 0200, dbg->dbg_root, dev, &fops);
1175 mlx5_cmdif_debugfs_init(dev);
1180 clean_debug_files(dev);
1184 void mlx5_cmd_use_events(struct mlx5_core_dev *dev)
1186 struct mlx5_cmd *cmd = &dev->cmd;
1189 for (i = 0; i < cmd->max_reg_cmds; i++)
1192 down(&cmd->pages_sem);
1194 flush_workqueue(cmd->wq);
1196 cmd->mode = CMD_MODE_EVENTS;
1198 up(&cmd->pages_sem);
1199 for (i = 0; i < cmd->max_reg_cmds; i++)
1203 void mlx5_cmd_use_polling(struct mlx5_core_dev *dev)
1205 struct mlx5_cmd *cmd = &dev->cmd;
1208 for (i = 0; i < cmd->max_reg_cmds; i++)
1211 down(&cmd->pages_sem);
1213 flush_workqueue(cmd->wq);
1214 cmd->mode = CMD_MODE_POLLING;
1216 up(&cmd->pages_sem);
1217 for (i = 0; i < cmd->max_reg_cmds; i++)
1221 static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg)
1223 unsigned long flags;
1226 spin_lock_irqsave(&msg->cache->lock, flags);
1227 list_add_tail(&msg->list, &msg->cache->head);
1228 spin_unlock_irqrestore(&msg->cache->lock, flags);
1230 mlx5_free_cmd_msg(dev, msg);
1234 void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec)
1236 struct mlx5_cmd *cmd = &dev->cmd;
1237 struct mlx5_cmd_work_ent *ent;
1238 mlx5_cmd_cbk_t callback;
1243 struct mlx5_cmd_stats *stats;
1244 unsigned long flags;
1245 unsigned long vector;
1247 /* there can be at most 32 command queues */
1248 vector = vec & 0xffffffff;
1249 for (i = 0; i < (1 << cmd->log_sz); i++) {
1250 if (test_bit(i, &vector)) {
1251 struct semaphore *sem;
1253 ent = cmd->ent_arr[i];
1254 if (ent->page_queue)
1255 sem = &cmd->pages_sem;
1258 ent->ts2 = ktime_get_ns();
1259 memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out));
1260 dump_command(dev, ent, 0);
1262 if (!cmd->checksum_disabled)
1263 ent->ret = verify_signature(ent);
1266 if (vec & MLX5_TRIGGERED_CMD_COMP)
1267 ent->status = MLX5_DRIVER_STATUS_ABORTED;
1269 ent->status = ent->lay->status_own >> 1;
1271 mlx5_core_dbg(dev, "command completed. ret 0x%x, delivery status %s(0x%x)\n",
1272 ent->ret, deliv_status_to_str(ent->status), ent->status);
1274 free_ent(cmd, ent->idx);
1276 if (ent->callback) {
1277 ds = ent->ts2 - ent->ts1;
1278 if (ent->op < ARRAY_SIZE(cmd->stats)) {
1279 stats = &cmd->stats[ent->op];
1280 spin_lock_irqsave(&stats->lock, flags);
1283 spin_unlock_irqrestore(&stats->lock, flags);
1286 callback = ent->callback;
1287 context = ent->context;
1290 err = mlx5_copy_from_msg(ent->uout,
1294 mlx5_free_cmd_msg(dev, ent->out);
1295 free_msg(dev, ent->in);
1297 err = err ? err : ent->status;
1299 callback(err, context);
1301 complete(&ent->done);
1307 EXPORT_SYMBOL(mlx5_cmd_comp_handler);
1309 static int status_to_err(u8 status)
1311 return status ? -1 : 0; /* TBD more meaningful codes */
1314 static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size,
1317 struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM);
1318 struct mlx5_cmd *cmd = &dev->cmd;
1319 struct cache_ent *ent = NULL;
1321 if (in_size > MED_LIST_SIZE && in_size <= LONG_LIST_SIZE)
1322 ent = &cmd->cache.large;
1323 else if (in_size > 16 && in_size <= MED_LIST_SIZE)
1324 ent = &cmd->cache.med;
1327 spin_lock_irq(&ent->lock);
1328 if (!list_empty(&ent->head)) {
1329 msg = list_entry(ent->head.next, typeof(*msg), list);
1330 /* For cached lists, we must explicitly state what is
1334 list_del(&msg->list);
1336 spin_unlock_irq(&ent->lock);
1340 msg = mlx5_alloc_cmd_msg(dev, gfp, in_size);
1345 static u16 opcode_from_in(struct mlx5_inbox_hdr *in)
1347 return be16_to_cpu(in->opcode);
1350 static int is_manage_pages(struct mlx5_inbox_hdr *in)
1352 return be16_to_cpu(in->opcode) == MLX5_CMD_OP_MANAGE_PAGES;
1355 static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
1356 int out_size, mlx5_cmd_cbk_t callback, void *context)
1358 struct mlx5_cmd_msg *inb;
1359 struct mlx5_cmd_msg *outb;
1366 if (pci_channel_offline(dev->pdev) ||
1367 dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
1368 err = mlx5_internal_err_ret_value(dev, opcode_from_in(in), &drv_synd, &status);
1369 *get_synd_ptr(out) = cpu_to_be32(drv_synd);
1370 *get_status_ptr(out) = status;
1374 pages_queue = is_manage_pages(in);
1375 gfp = callback ? GFP_ATOMIC : GFP_KERNEL;
1377 inb = alloc_msg(dev, in_size, gfp);
1383 err = mlx5_copy_to_msg(inb, in, in_size);
1385 mlx5_core_warn(dev, "err %d\n", err);
1389 outb = mlx5_alloc_cmd_msg(dev, gfp, out_size);
1391 err = PTR_ERR(outb);
1395 err = mlx5_cmd_invoke(dev, inb, outb, out, out_size, callback, context,
1396 pages_queue, &status);
1400 mlx5_core_dbg(dev, "err %d, status %d\n", err, status);
1402 err = status_to_err(status);
1407 err = mlx5_copy_from_msg(out, outb, out_size);
1411 mlx5_free_cmd_msg(dev, outb);
1419 int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
1422 return cmd_exec(dev, in, in_size, out, out_size, NULL, NULL);
1424 EXPORT_SYMBOL(mlx5_cmd_exec);
1426 int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size,
1427 void *out, int out_size, mlx5_cmd_cbk_t callback,
1430 return cmd_exec(dev, in, in_size, out, out_size, callback, context);
1432 EXPORT_SYMBOL(mlx5_cmd_exec_cb);
1434 static void destroy_msg_cache(struct mlx5_core_dev *dev)
1436 struct mlx5_cmd *cmd = &dev->cmd;
1437 struct mlx5_cmd_msg *msg;
1438 struct mlx5_cmd_msg *n;
1440 list_for_each_entry_safe(msg, n, &cmd->cache.large.head, list) {
1441 list_del(&msg->list);
1442 mlx5_free_cmd_msg(dev, msg);
1445 list_for_each_entry_safe(msg, n, &cmd->cache.med.head, list) {
1446 list_del(&msg->list);
1447 mlx5_free_cmd_msg(dev, msg);
1451 static int create_msg_cache(struct mlx5_core_dev *dev)
1453 struct mlx5_cmd *cmd = &dev->cmd;
1454 struct mlx5_cmd_msg *msg;
1458 spin_lock_init(&cmd->cache.large.lock);
1459 INIT_LIST_HEAD(&cmd->cache.large.head);
1460 spin_lock_init(&cmd->cache.med.lock);
1461 INIT_LIST_HEAD(&cmd->cache.med.head);
1463 for (i = 0; i < NUM_LONG_LISTS; i++) {
1464 msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE);
1469 msg->cache = &cmd->cache.large;
1470 list_add_tail(&msg->list, &cmd->cache.large.head);
1473 for (i = 0; i < NUM_MED_LISTS; i++) {
1474 msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE);
1479 msg->cache = &cmd->cache.med;
1480 list_add_tail(&msg->list, &cmd->cache.med.head);
1486 destroy_msg_cache(dev);
1490 static int alloc_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd)
1492 struct device *ddev = &dev->pdev->dev;
1494 cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE,
1495 &cmd->alloc_dma, GFP_KERNEL);
1496 if (!cmd->cmd_alloc_buf)
1499 /* make sure it is aligned to 4K */
1500 if (!((uintptr_t)cmd->cmd_alloc_buf & (MLX5_ADAPTER_PAGE_SIZE - 1))) {
1501 cmd->cmd_buf = cmd->cmd_alloc_buf;
1502 cmd->dma = cmd->alloc_dma;
1503 cmd->alloc_size = MLX5_ADAPTER_PAGE_SIZE;
1507 dma_free_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE, cmd->cmd_alloc_buf,
1509 cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev,
1510 2 * MLX5_ADAPTER_PAGE_SIZE - 1,
1511 &cmd->alloc_dma, GFP_KERNEL);
1512 if (!cmd->cmd_alloc_buf)
1515 cmd->cmd_buf = PTR_ALIGN(cmd->cmd_alloc_buf, MLX5_ADAPTER_PAGE_SIZE);
1516 cmd->dma = ALIGN(cmd->alloc_dma, MLX5_ADAPTER_PAGE_SIZE);
1517 cmd->alloc_size = 2 * MLX5_ADAPTER_PAGE_SIZE - 1;
1521 static void free_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd)
1523 struct device *ddev = &dev->pdev->dev;
1525 dma_free_coherent(ddev, cmd->alloc_size, cmd->cmd_alloc_buf,
1529 int mlx5_cmd_init(struct mlx5_core_dev *dev)
1531 int size = sizeof(struct mlx5_cmd_prot_block);
1532 int align = roundup_pow_of_two(size);
1533 struct mlx5_cmd *cmd = &dev->cmd;
1539 memset(cmd, 0, sizeof(*cmd));
1540 cmd_if_rev = cmdif_rev(dev);
1541 if (cmd_if_rev != CMD_IF_REV) {
1542 dev_err(&dev->pdev->dev,
1543 "Driver cmdif rev(%d) differs from firmware's(%d)\n",
1544 CMD_IF_REV, cmd_if_rev);
1548 cmd->pool = pci_pool_create("mlx5_cmd", dev->pdev, size, align, 0);
1552 err = alloc_cmd_page(dev, cmd);
1556 cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff;
1557 cmd->log_sz = cmd_l >> 4 & 0xf;
1558 cmd->log_stride = cmd_l & 0xf;
1559 if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) {
1560 dev_err(&dev->pdev->dev, "firmware reports too many outstanding commands %d\n",
1566 if (cmd->log_sz + cmd->log_stride > MLX5_ADAPTER_PAGE_SHIFT) {
1567 dev_err(&dev->pdev->dev, "command queue size overflow\n");
1572 cmd->checksum_disabled = 1;
1573 cmd->max_reg_cmds = (1 << cmd->log_sz) - 1;
1574 cmd->bitmask = (1 << cmd->max_reg_cmds) - 1;
1576 cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16;
1577 if (cmd->cmdif_rev > CMD_IF_REV) {
1578 dev_err(&dev->pdev->dev, "driver does not support command interface version. driver %d, firmware %d\n",
1579 CMD_IF_REV, cmd->cmdif_rev);
1584 spin_lock_init(&cmd->alloc_lock);
1585 spin_lock_init(&cmd->token_lock);
1586 for (i = 0; i < ARRAY_SIZE(cmd->stats); i++)
1587 spin_lock_init(&cmd->stats[i].lock);
1589 sema_init(&cmd->sem, cmd->max_reg_cmds);
1590 sema_init(&cmd->pages_sem, 1);
1592 cmd_h = (u32)((u64)(cmd->dma) >> 32);
1593 cmd_l = (u32)(cmd->dma);
1594 if (cmd_l & 0xfff) {
1595 dev_err(&dev->pdev->dev, "invalid command queue address\n");
1600 iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h);
1601 iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz);
1603 /* Make sure firmware sees the complete address before we proceed */
1606 mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma));
1608 cmd->mode = CMD_MODE_POLLING;
1610 err = create_msg_cache(dev);
1612 dev_err(&dev->pdev->dev, "failed to create command cache\n");
1617 cmd->wq = create_singlethread_workqueue(cmd->wq_name);
1619 dev_err(&dev->pdev->dev, "failed to create command workqueue\n");
1624 err = create_debugfs_files(dev);
1633 destroy_workqueue(cmd->wq);
1636 destroy_msg_cache(dev);
1639 free_cmd_page(dev, cmd);
1642 pci_pool_destroy(cmd->pool);
1646 EXPORT_SYMBOL(mlx5_cmd_init);
1648 void mlx5_cmd_cleanup(struct mlx5_core_dev *dev)
1650 struct mlx5_cmd *cmd = &dev->cmd;
1652 clean_debug_files(dev);
1653 destroy_workqueue(cmd->wq);
1654 destroy_msg_cache(dev);
1655 free_cmd_page(dev, cmd);
1656 pci_pool_destroy(cmd->pool);
1658 EXPORT_SYMBOL(mlx5_cmd_cleanup);
1660 static const char *cmd_status_str(u8 status)
1663 case MLX5_CMD_STAT_OK:
1665 case MLX5_CMD_STAT_INT_ERR:
1666 return "internal error";
1667 case MLX5_CMD_STAT_BAD_OP_ERR:
1668 return "bad operation";
1669 case MLX5_CMD_STAT_BAD_PARAM_ERR:
1670 return "bad parameter";
1671 case MLX5_CMD_STAT_BAD_SYS_STATE_ERR:
1672 return "bad system state";
1673 case MLX5_CMD_STAT_BAD_RES_ERR:
1674 return "bad resource";
1675 case MLX5_CMD_STAT_RES_BUSY:
1676 return "resource busy";
1677 case MLX5_CMD_STAT_LIM_ERR:
1678 return "limits exceeded";
1679 case MLX5_CMD_STAT_BAD_RES_STATE_ERR:
1680 return "bad resource state";
1681 case MLX5_CMD_STAT_IX_ERR:
1683 case MLX5_CMD_STAT_NO_RES_ERR:
1684 return "no resources";
1685 case MLX5_CMD_STAT_BAD_INP_LEN_ERR:
1686 return "bad input length";
1687 case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR:
1688 return "bad output length";
1689 case MLX5_CMD_STAT_BAD_QP_STATE_ERR:
1690 return "bad QP state";
1691 case MLX5_CMD_STAT_BAD_PKT_ERR:
1692 return "bad packet (discarded)";
1693 case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR:
1694 return "bad size too many outstanding CQEs";
1696 return "unknown status";
1700 static int cmd_status_to_err(u8 status)
1703 case MLX5_CMD_STAT_OK: return 0;
1704 case MLX5_CMD_STAT_INT_ERR: return -EIO;
1705 case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL;
1706 case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL;
1707 case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO;
1708 case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL;
1709 case MLX5_CMD_STAT_RES_BUSY: return -EBUSY;
1710 case MLX5_CMD_STAT_LIM_ERR: return -ENOMEM;
1711 case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL;
1712 case MLX5_CMD_STAT_IX_ERR: return -EINVAL;
1713 case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN;
1714 case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO;
1715 case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO;
1716 case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL;
1717 case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL;
1718 case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL;
1719 default: return -EIO;
1723 /* this will be available till all the commands use set/get macros */
1724 int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr)
1729 pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n",
1730 cmd_status_str(hdr->status), hdr->status,
1731 be32_to_cpu(hdr->syndrome));
1733 return cmd_status_to_err(hdr->status);
1736 int mlx5_cmd_status_to_err_v2(void *ptr)
1741 status = be32_to_cpu(*(__be32 *)ptr) >> 24;
1745 syndrome = be32_to_cpu(*(__be32 *)(ptr + 4));
1747 pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n",
1748 cmd_status_str(status), status, syndrome);
1750 return cmd_status_to_err(status);