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e126ba97 | 1 | /* |
b3f63c3d | 2 | * Copyright (c) 2013-2016, Mellanox Technologies. All rights reserved. |
e126ba97 EC |
3 | * |
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: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
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. | |
22 | * | |
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 | |
30 | * SOFTWARE. | |
31 | */ | |
32 | ||
adec640e | 33 | #include <linux/highmem.h> |
e126ba97 | 34 | #include <linux/module.h> |
e126ba97 EC |
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> | |
44 | ||
45 | #include "mlx5_core.h" | |
46 | ||
47 | enum { | |
0a324f31 | 48 | CMD_IF_REV = 5, |
e126ba97 EC |
49 | }; |
50 | ||
51 | enum { | |
52 | CMD_MODE_POLLING, | |
53 | CMD_MODE_EVENTS | |
54 | }; | |
55 | ||
56 | enum { | |
57 | NUM_LONG_LISTS = 2, | |
58 | NUM_MED_LISTS = 64, | |
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, | |
62 | }; | |
63 | ||
64 | enum { | |
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, | |
76 | }; | |
77 | ||
e126ba97 EC |
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, | |
746b5583 | 81 | void *uout, int uout_size, |
e126ba97 EC |
82 | mlx5_cmd_cbk_t cbk, |
83 | void *context, int page_queue) | |
84 | { | |
85 | gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL; | |
86 | struct mlx5_cmd_work_ent *ent; | |
87 | ||
88 | ent = kzalloc(sizeof(*ent), alloc_flags); | |
89 | if (!ent) | |
90 | return ERR_PTR(-ENOMEM); | |
91 | ||
92 | ent->in = in; | |
93 | ent->out = out; | |
746b5583 EC |
94 | ent->uout = uout; |
95 | ent->uout_size = uout_size; | |
e126ba97 EC |
96 | ent->callback = cbk; |
97 | ent->context = context; | |
98 | ent->cmd = cmd; | |
99 | ent->page_queue = page_queue; | |
100 | ||
101 | return ent; | |
102 | } | |
103 | ||
104 | static u8 alloc_token(struct mlx5_cmd *cmd) | |
105 | { | |
106 | u8 token; | |
107 | ||
108 | spin_lock(&cmd->token_lock); | |
4cbdd27c AS |
109 | cmd->token++; |
110 | if (cmd->token == 0) | |
111 | cmd->token++; | |
112 | token = cmd->token; | |
e126ba97 EC |
113 | spin_unlock(&cmd->token_lock); |
114 | ||
115 | return token; | |
116 | } | |
117 | ||
118 | static int alloc_ent(struct mlx5_cmd *cmd) | |
119 | { | |
120 | unsigned long flags; | |
121 | int ret; | |
122 | ||
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); | |
128 | ||
129 | return ret < cmd->max_reg_cmds ? ret : -ENOMEM; | |
130 | } | |
131 | ||
132 | static void free_ent(struct mlx5_cmd *cmd, int idx) | |
133 | { | |
134 | unsigned long flags; | |
135 | ||
136 | spin_lock_irqsave(&cmd->alloc_lock, flags); | |
137 | set_bit(idx, &cmd->bitmask); | |
138 | spin_unlock_irqrestore(&cmd->alloc_lock, flags); | |
139 | } | |
140 | ||
141 | static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx) | |
142 | { | |
143 | return cmd->cmd_buf + (idx << cmd->log_stride); | |
144 | } | |
145 | ||
146 | static u8 xor8_buf(void *buf, int len) | |
147 | { | |
148 | u8 *ptr = buf; | |
149 | u8 sum = 0; | |
150 | int i; | |
151 | ||
152 | for (i = 0; i < len; i++) | |
153 | sum ^= ptr[i]; | |
154 | ||
155 | return sum; | |
156 | } | |
157 | ||
158 | static int verify_block_sig(struct mlx5_cmd_prot_block *block) | |
159 | { | |
160 | if (xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 1) != 0xff) | |
161 | return -EINVAL; | |
162 | ||
163 | if (xor8_buf(block, sizeof(*block)) != 0xff) | |
164 | return -EINVAL; | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
c1868b82 EC |
169 | static void calc_block_sig(struct mlx5_cmd_prot_block *block, u8 token, |
170 | int csum) | |
e126ba97 EC |
171 | { |
172 | block->token = token; | |
c1868b82 EC |
173 | if (csum) { |
174 | block->ctrl_sig = ~xor8_buf(block->rsvd0, sizeof(*block) - | |
175 | sizeof(block->data) - 2); | |
176 | block->sig = ~xor8_buf(block, sizeof(*block) - 1); | |
177 | } | |
e126ba97 EC |
178 | } |
179 | ||
c1868b82 | 180 | static void calc_chain_sig(struct mlx5_cmd_msg *msg, u8 token, int csum) |
e126ba97 EC |
181 | { |
182 | struct mlx5_cmd_mailbox *next = msg->next; | |
183 | ||
184 | while (next) { | |
c1868b82 | 185 | calc_block_sig(next->buf, token, csum); |
e126ba97 EC |
186 | next = next->next; |
187 | } | |
188 | } | |
189 | ||
c1868b82 | 190 | static void set_signature(struct mlx5_cmd_work_ent *ent, int csum) |
e126ba97 EC |
191 | { |
192 | ent->lay->sig = ~xor8_buf(ent->lay, sizeof(*ent->lay)); | |
c1868b82 EC |
193 | calc_chain_sig(ent->in, ent->token, csum); |
194 | calc_chain_sig(ent->out, ent->token, csum); | |
e126ba97 EC |
195 | } |
196 | ||
197 | static void poll_timeout(struct mlx5_cmd_work_ent *ent) | |
198 | { | |
199 | unsigned long poll_end = jiffies + msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000); | |
200 | u8 own; | |
201 | ||
202 | do { | |
203 | own = ent->lay->status_own; | |
204 | if (!(own & CMD_OWNER_HW)) { | |
205 | ent->ret = 0; | |
206 | return; | |
207 | } | |
208 | usleep_range(5000, 10000); | |
209 | } while (time_before(jiffies, poll_end)); | |
210 | ||
211 | ent->ret = -ETIMEDOUT; | |
212 | } | |
213 | ||
214 | static void free_cmd(struct mlx5_cmd_work_ent *ent) | |
215 | { | |
216 | kfree(ent); | |
217 | } | |
218 | ||
219 | ||
220 | static int verify_signature(struct mlx5_cmd_work_ent *ent) | |
221 | { | |
222 | struct mlx5_cmd_mailbox *next = ent->out->next; | |
223 | int err; | |
224 | u8 sig; | |
225 | ||
226 | sig = xor8_buf(ent->lay, sizeof(*ent->lay)); | |
227 | if (sig != 0xff) | |
228 | return -EINVAL; | |
229 | ||
230 | while (next) { | |
231 | err = verify_block_sig(next->buf); | |
232 | if (err) | |
233 | return err; | |
234 | ||
235 | next = next->next; | |
236 | } | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | static void dump_buf(void *buf, int size, int data_only, int offset) | |
242 | { | |
243 | __be32 *p = buf; | |
244 | int i; | |
245 | ||
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]), | |
249 | be32_to_cpu(p[3])); | |
250 | p += 4; | |
251 | offset += 16; | |
252 | } | |
253 | if (!data_only) | |
254 | pr_debug("\n"); | |
255 | } | |
256 | ||
020446e0 EC |
257 | enum { |
258 | MLX5_DRIVER_STATUS_ABORTED = 0xfe, | |
89d44f0a | 259 | MLX5_DRIVER_SYND = 0xbadd00de, |
020446e0 EC |
260 | }; |
261 | ||
89d44f0a MD |
262 | static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op, |
263 | u32 *synd, u8 *status) | |
264 | { | |
265 | *synd = 0; | |
266 | *status = 0; | |
267 | ||
268 | switch (op) { | |
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: | |
9dc0b289 | 297 | case MLX5_CMD_OP_DEALLOC_FLOW_COUNTER: |
89d44f0a MD |
298 | return MLX5_CMD_STAT_OK; |
299 | ||
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: | |
9dc0b289 AV |
399 | case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: |
400 | case MLX5_CMD_OP_QUERY_FLOW_COUNTER: | |
89d44f0a MD |
401 | *status = MLX5_DRIVER_STATUS_ABORTED; |
402 | *synd = MLX5_DRIVER_SYND; | |
403 | return -EIO; | |
404 | default: | |
405 | mlx5_core_err(dev, "Unknown FW command (%d)\n", op); | |
406 | return -EINVAL; | |
407 | } | |
408 | } | |
409 | ||
e126ba97 EC |
410 | const char *mlx5_command_str(int command) |
411 | { | |
42ca502e | 412 | #define MLX5_COMMAND_STR_CASE(__cmd) case MLX5_CMD_OP_ ## __cmd: return #__cmd |
b3f63c3d | 413 | |
42ca502e AV |
414 | switch (command) { |
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); | |
9dc0b289 AV |
545 | MLX5_COMMAND_STR_CASE(ALLOC_FLOW_COUNTER); |
546 | MLX5_COMMAND_STR_CASE(DEALLOC_FLOW_COUNTER); | |
547 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_COUNTER); | |
e126ba97 EC |
548 | default: return "unknown command opcode"; |
549 | } | |
550 | } | |
551 | ||
552 | static void dump_command(struct mlx5_core_dev *dev, | |
553 | struct mlx5_cmd_work_ent *ent, int input) | |
554 | { | |
555 | u16 op = be16_to_cpu(((struct mlx5_inbox_hdr *)(ent->lay->in))->opcode); | |
556 | struct mlx5_cmd_msg *msg = input ? ent->in : ent->out; | |
557 | struct mlx5_cmd_mailbox *next = msg->next; | |
558 | int data_only; | |
f241e749 | 559 | u32 offset = 0; |
e126ba97 EC |
560 | int dump_len; |
561 | ||
562 | data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA)); | |
563 | ||
564 | if (data_only) | |
565 | mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA, | |
566 | "dump command data %s(0x%x) %s\n", | |
567 | mlx5_command_str(op), op, | |
568 | input ? "INPUT" : "OUTPUT"); | |
569 | else | |
570 | mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n", | |
571 | mlx5_command_str(op), op, | |
572 | input ? "INPUT" : "OUTPUT"); | |
573 | ||
574 | if (data_only) { | |
575 | if (input) { | |
576 | dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset); | |
577 | offset += sizeof(ent->lay->in); | |
578 | } else { | |
579 | dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset); | |
580 | offset += sizeof(ent->lay->out); | |
581 | } | |
582 | } else { | |
583 | dump_buf(ent->lay, sizeof(*ent->lay), 0, offset); | |
584 | offset += sizeof(*ent->lay); | |
585 | } | |
586 | ||
587 | while (next && offset < msg->len) { | |
588 | if (data_only) { | |
589 | dump_len = min_t(int, MLX5_CMD_DATA_BLOCK_SIZE, msg->len - offset); | |
590 | dump_buf(next->buf, dump_len, 1, offset); | |
591 | offset += MLX5_CMD_DATA_BLOCK_SIZE; | |
592 | } else { | |
593 | mlx5_core_dbg(dev, "command block:\n"); | |
594 | dump_buf(next->buf, sizeof(struct mlx5_cmd_prot_block), 0, offset); | |
595 | offset += sizeof(struct mlx5_cmd_prot_block); | |
596 | } | |
597 | next = next->next; | |
598 | } | |
599 | ||
600 | if (data_only) | |
601 | pr_debug("\n"); | |
602 | } | |
603 | ||
604 | static void cmd_work_handler(struct work_struct *work) | |
605 | { | |
606 | struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work); | |
607 | struct mlx5_cmd *cmd = ent->cmd; | |
608 | struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd); | |
609 | struct mlx5_cmd_layout *lay; | |
610 | struct semaphore *sem; | |
020446e0 | 611 | unsigned long flags; |
e126ba97 EC |
612 | |
613 | sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem; | |
614 | down(sem); | |
615 | if (!ent->page_queue) { | |
616 | ent->idx = alloc_ent(cmd); | |
617 | if (ent->idx < 0) { | |
618 | mlx5_core_err(dev, "failed to allocate command entry\n"); | |
619 | up(sem); | |
620 | return; | |
621 | } | |
622 | } else { | |
623 | ent->idx = cmd->max_reg_cmds; | |
020446e0 EC |
624 | spin_lock_irqsave(&cmd->alloc_lock, flags); |
625 | clear_bit(ent->idx, &cmd->bitmask); | |
626 | spin_unlock_irqrestore(&cmd->alloc_lock, flags); | |
e126ba97 EC |
627 | } |
628 | ||
629 | ent->token = alloc_token(cmd); | |
630 | cmd->ent_arr[ent->idx] = ent; | |
631 | lay = get_inst(cmd, ent->idx); | |
632 | ent->lay = lay; | |
633 | memset(lay, 0, sizeof(*lay)); | |
634 | memcpy(lay->in, ent->in->first.data, sizeof(lay->in)); | |
746b5583 | 635 | ent->op = be32_to_cpu(lay->in[0]) >> 16; |
e126ba97 EC |
636 | if (ent->in->next) |
637 | lay->in_ptr = cpu_to_be64(ent->in->next->dma); | |
638 | lay->inlen = cpu_to_be32(ent->in->len); | |
639 | if (ent->out->next) | |
640 | lay->out_ptr = cpu_to_be64(ent->out->next->dma); | |
641 | lay->outlen = cpu_to_be32(ent->out->len); | |
642 | lay->type = MLX5_PCI_CMD_XPORT; | |
643 | lay->token = ent->token; | |
644 | lay->status_own = CMD_OWNER_HW; | |
c1868b82 | 645 | set_signature(ent, !cmd->checksum_disabled); |
e126ba97 | 646 | dump_command(dev, ent, 1); |
14a70046 | 647 | ent->ts1 = ktime_get_ns(); |
e126ba97 EC |
648 | |
649 | /* ring doorbell after the descriptor is valid */ | |
21db5074 | 650 | mlx5_core_dbg(dev, "writing 0x%x to command doorbell\n", 1 << ent->idx); |
e126ba97 EC |
651 | wmb(); |
652 | iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell); | |
e126ba97 | 653 | mmiowb(); |
21db5074 | 654 | /* if not in polling don't use ent after this point */ |
e126ba97 EC |
655 | if (cmd->mode == CMD_MODE_POLLING) { |
656 | poll_timeout(ent); | |
657 | /* make sure we read the descriptor after ownership is SW */ | |
658 | rmb(); | |
659 | mlx5_cmd_comp_handler(dev, 1UL << ent->idx); | |
660 | } | |
661 | } | |
662 | ||
663 | static const char *deliv_status_to_str(u8 status) | |
664 | { | |
665 | switch (status) { | |
666 | case MLX5_CMD_DELIVERY_STAT_OK: | |
667 | return "no errors"; | |
668 | case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR: | |
669 | return "signature error"; | |
670 | case MLX5_CMD_DELIVERY_STAT_TOK_ERR: | |
671 | return "token error"; | |
672 | case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR: | |
673 | return "bad block number"; | |
674 | case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR: | |
675 | return "output pointer not aligned to block size"; | |
676 | case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR: | |
677 | return "input pointer not aligned to block size"; | |
678 | case MLX5_CMD_DELIVERY_STAT_FW_ERR: | |
679 | return "firmware internal error"; | |
680 | case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR: | |
681 | return "command input length error"; | |
682 | case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR: | |
683 | return "command ouput length error"; | |
684 | case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR: | |
685 | return "reserved fields not cleared"; | |
686 | case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR: | |
687 | return "bad command descriptor type"; | |
688 | default: | |
689 | return "unknown status code"; | |
690 | } | |
691 | } | |
692 | ||
693 | static u16 msg_to_opcode(struct mlx5_cmd_msg *in) | |
694 | { | |
695 | struct mlx5_inbox_hdr *hdr = (struct mlx5_inbox_hdr *)(in->first.data); | |
696 | ||
697 | return be16_to_cpu(hdr->opcode); | |
698 | } | |
699 | ||
700 | static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent) | |
701 | { | |
702 | unsigned long timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); | |
703 | struct mlx5_cmd *cmd = &dev->cmd; | |
704 | int err; | |
705 | ||
706 | if (cmd->mode == CMD_MODE_POLLING) { | |
707 | wait_for_completion(&ent->done); | |
708 | err = ent->ret; | |
709 | } else { | |
710 | if (!wait_for_completion_timeout(&ent->done, timeout)) | |
711 | err = -ETIMEDOUT; | |
712 | else | |
713 | err = 0; | |
714 | } | |
715 | if (err == -ETIMEDOUT) { | |
716 | mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", | |
717 | mlx5_command_str(msg_to_opcode(ent->in)), | |
718 | msg_to_opcode(ent->in)); | |
719 | } | |
1a91de28 JP |
720 | mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n", |
721 | err, deliv_status_to_str(ent->status), ent->status); | |
e126ba97 EC |
722 | |
723 | return err; | |
724 | } | |
725 | ||
89d44f0a MD |
726 | static __be32 *get_synd_ptr(struct mlx5_outbox_hdr *out) |
727 | { | |
728 | return &out->syndrome; | |
729 | } | |
730 | ||
731 | static u8 *get_status_ptr(struct mlx5_outbox_hdr *out) | |
732 | { | |
733 | return &out->status; | |
734 | } | |
735 | ||
e126ba97 EC |
736 | /* Notes: |
737 | * 1. Callback functions may not sleep | |
738 | * 2. page queue commands do not support asynchrous completion | |
739 | */ | |
740 | static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in, | |
746b5583 EC |
741 | struct mlx5_cmd_msg *out, void *uout, int uout_size, |
742 | mlx5_cmd_cbk_t callback, | |
e126ba97 EC |
743 | void *context, int page_queue, u8 *status) |
744 | { | |
745 | struct mlx5_cmd *cmd = &dev->cmd; | |
746 | struct mlx5_cmd_work_ent *ent; | |
e126ba97 EC |
747 | struct mlx5_cmd_stats *stats; |
748 | int err = 0; | |
749 | s64 ds; | |
750 | u16 op; | |
751 | ||
752 | if (callback && page_queue) | |
753 | return -EINVAL; | |
754 | ||
746b5583 EC |
755 | ent = alloc_cmd(cmd, in, out, uout, uout_size, callback, context, |
756 | page_queue); | |
e126ba97 EC |
757 | if (IS_ERR(ent)) |
758 | return PTR_ERR(ent); | |
759 | ||
760 | if (!callback) | |
761 | init_completion(&ent->done); | |
762 | ||
763 | INIT_WORK(&ent->work, cmd_work_handler); | |
764 | if (page_queue) { | |
765 | cmd_work_handler(&ent->work); | |
766 | } else if (!queue_work(cmd->wq, &ent->work)) { | |
767 | mlx5_core_warn(dev, "failed to queue work\n"); | |
768 | err = -ENOMEM; | |
769 | goto out_free; | |
770 | } | |
771 | ||
772 | if (!callback) { | |
773 | err = wait_func(dev, ent); | |
774 | if (err == -ETIMEDOUT) | |
775 | goto out; | |
776 | ||
14a70046 | 777 | ds = ent->ts2 - ent->ts1; |
e126ba97 EC |
778 | op = be16_to_cpu(((struct mlx5_inbox_hdr *)in->first.data)->opcode); |
779 | if (op < ARRAY_SIZE(cmd->stats)) { | |
780 | stats = &cmd->stats[op]; | |
746b5583 | 781 | spin_lock_irq(&stats->lock); |
e126ba97 EC |
782 | stats->sum += ds; |
783 | ++stats->n; | |
746b5583 | 784 | spin_unlock_irq(&stats->lock); |
e126ba97 EC |
785 | } |
786 | mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME, | |
787 | "fw exec time for %s is %lld nsec\n", | |
788 | mlx5_command_str(op), ds); | |
789 | *status = ent->status; | |
790 | free_cmd(ent); | |
791 | } | |
792 | ||
793 | return err; | |
794 | ||
795 | out_free: | |
796 | free_cmd(ent); | |
797 | out: | |
798 | return err; | |
799 | } | |
800 | ||
801 | static ssize_t dbg_write(struct file *filp, const char __user *buf, | |
802 | size_t count, loff_t *pos) | |
803 | { | |
804 | struct mlx5_core_dev *dev = filp->private_data; | |
805 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
806 | char lbuf[3]; | |
807 | int err; | |
808 | ||
809 | if (!dbg->in_msg || !dbg->out_msg) | |
810 | return -ENOMEM; | |
811 | ||
812 | if (copy_from_user(lbuf, buf, sizeof(lbuf))) | |
5e631a03 | 813 | return -EFAULT; |
e126ba97 EC |
814 | |
815 | lbuf[sizeof(lbuf) - 1] = 0; | |
816 | ||
817 | if (strcmp(lbuf, "go")) | |
818 | return -EINVAL; | |
819 | ||
820 | err = mlx5_cmd_exec(dev, dbg->in_msg, dbg->inlen, dbg->out_msg, dbg->outlen); | |
821 | ||
822 | return err ? err : count; | |
823 | } | |
824 | ||
825 | ||
826 | static const struct file_operations fops = { | |
827 | .owner = THIS_MODULE, | |
828 | .open = simple_open, | |
829 | .write = dbg_write, | |
830 | }; | |
831 | ||
832 | static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size) | |
833 | { | |
834 | struct mlx5_cmd_prot_block *block; | |
835 | struct mlx5_cmd_mailbox *next; | |
836 | int copy; | |
837 | ||
838 | if (!to || !from) | |
839 | return -ENOMEM; | |
840 | ||
841 | copy = min_t(int, size, sizeof(to->first.data)); | |
842 | memcpy(to->first.data, from, copy); | |
843 | size -= copy; | |
844 | from += copy; | |
845 | ||
846 | next = to->next; | |
847 | while (size) { | |
848 | if (!next) { | |
849 | /* this is a BUG */ | |
850 | return -ENOMEM; | |
851 | } | |
852 | ||
853 | copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE); | |
854 | block = next->buf; | |
855 | memcpy(block->data, from, copy); | |
856 | from += copy; | |
857 | size -= copy; | |
858 | next = next->next; | |
859 | } | |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
864 | static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size) | |
865 | { | |
866 | struct mlx5_cmd_prot_block *block; | |
867 | struct mlx5_cmd_mailbox *next; | |
868 | int copy; | |
869 | ||
870 | if (!to || !from) | |
871 | return -ENOMEM; | |
872 | ||
873 | copy = min_t(int, size, sizeof(from->first.data)); | |
874 | memcpy(to, from->first.data, copy); | |
875 | size -= copy; | |
876 | to += copy; | |
877 | ||
878 | next = from->next; | |
879 | while (size) { | |
880 | if (!next) { | |
881 | /* this is a BUG */ | |
882 | return -ENOMEM; | |
883 | } | |
884 | ||
885 | copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE); | |
886 | block = next->buf; | |
e126ba97 EC |
887 | |
888 | memcpy(to, block->data, copy); | |
889 | to += copy; | |
890 | size -= copy; | |
891 | next = next->next; | |
892 | } | |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
897 | static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev, | |
898 | gfp_t flags) | |
899 | { | |
900 | struct mlx5_cmd_mailbox *mailbox; | |
901 | ||
902 | mailbox = kmalloc(sizeof(*mailbox), flags); | |
903 | if (!mailbox) | |
904 | return ERR_PTR(-ENOMEM); | |
905 | ||
906 | mailbox->buf = pci_pool_alloc(dev->cmd.pool, flags, | |
907 | &mailbox->dma); | |
908 | if (!mailbox->buf) { | |
909 | mlx5_core_dbg(dev, "failed allocation\n"); | |
910 | kfree(mailbox); | |
911 | return ERR_PTR(-ENOMEM); | |
912 | } | |
913 | memset(mailbox->buf, 0, sizeof(struct mlx5_cmd_prot_block)); | |
914 | mailbox->next = NULL; | |
915 | ||
916 | return mailbox; | |
917 | } | |
918 | ||
919 | static void free_cmd_box(struct mlx5_core_dev *dev, | |
920 | struct mlx5_cmd_mailbox *mailbox) | |
921 | { | |
922 | pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma); | |
923 | kfree(mailbox); | |
924 | } | |
925 | ||
926 | static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev, | |
927 | gfp_t flags, int size) | |
928 | { | |
929 | struct mlx5_cmd_mailbox *tmp, *head = NULL; | |
930 | struct mlx5_cmd_prot_block *block; | |
931 | struct mlx5_cmd_msg *msg; | |
932 | int blen; | |
933 | int err; | |
934 | int n; | |
935 | int i; | |
936 | ||
746b5583 | 937 | msg = kzalloc(sizeof(*msg), flags); |
e126ba97 EC |
938 | if (!msg) |
939 | return ERR_PTR(-ENOMEM); | |
940 | ||
941 | blen = size - min_t(int, sizeof(msg->first.data), size); | |
942 | n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) / MLX5_CMD_DATA_BLOCK_SIZE; | |
943 | ||
944 | for (i = 0; i < n; i++) { | |
945 | tmp = alloc_cmd_box(dev, flags); | |
946 | if (IS_ERR(tmp)) { | |
947 | mlx5_core_warn(dev, "failed allocating block\n"); | |
948 | err = PTR_ERR(tmp); | |
949 | goto err_alloc; | |
950 | } | |
951 | ||
952 | block = tmp->buf; | |
953 | tmp->next = head; | |
954 | block->next = cpu_to_be64(tmp->next ? tmp->next->dma : 0); | |
955 | block->block_num = cpu_to_be32(n - i - 1); | |
956 | head = tmp; | |
957 | } | |
958 | msg->next = head; | |
959 | msg->len = size; | |
960 | return msg; | |
961 | ||
962 | err_alloc: | |
963 | while (head) { | |
964 | tmp = head->next; | |
965 | free_cmd_box(dev, head); | |
966 | head = tmp; | |
967 | } | |
968 | kfree(msg); | |
969 | ||
970 | return ERR_PTR(err); | |
971 | } | |
972 | ||
973 | static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev, | |
974 | struct mlx5_cmd_msg *msg) | |
975 | { | |
976 | struct mlx5_cmd_mailbox *head = msg->next; | |
977 | struct mlx5_cmd_mailbox *next; | |
978 | ||
979 | while (head) { | |
980 | next = head->next; | |
981 | free_cmd_box(dev, head); | |
982 | head = next; | |
983 | } | |
984 | kfree(msg); | |
985 | } | |
986 | ||
987 | static ssize_t data_write(struct file *filp, const char __user *buf, | |
988 | size_t count, loff_t *pos) | |
989 | { | |
990 | struct mlx5_core_dev *dev = filp->private_data; | |
991 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
992 | void *ptr; | |
993 | int err; | |
994 | ||
995 | if (*pos != 0) | |
996 | return -EINVAL; | |
997 | ||
998 | kfree(dbg->in_msg); | |
999 | dbg->in_msg = NULL; | |
1000 | dbg->inlen = 0; | |
1001 | ||
1002 | ptr = kzalloc(count, GFP_KERNEL); | |
1003 | if (!ptr) | |
1004 | return -ENOMEM; | |
1005 | ||
1006 | if (copy_from_user(ptr, buf, count)) { | |
5e631a03 | 1007 | err = -EFAULT; |
e126ba97 EC |
1008 | goto out; |
1009 | } | |
1010 | dbg->in_msg = ptr; | |
1011 | dbg->inlen = count; | |
1012 | ||
1013 | *pos = count; | |
1014 | ||
1015 | return count; | |
1016 | ||
1017 | out: | |
1018 | kfree(ptr); | |
1019 | return err; | |
1020 | } | |
1021 | ||
1022 | static ssize_t data_read(struct file *filp, char __user *buf, size_t count, | |
1023 | loff_t *pos) | |
1024 | { | |
1025 | struct mlx5_core_dev *dev = filp->private_data; | |
1026 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1027 | int copy; | |
1028 | ||
1029 | if (*pos) | |
1030 | return 0; | |
1031 | ||
1032 | if (!dbg->out_msg) | |
1033 | return -ENOMEM; | |
1034 | ||
1035 | copy = min_t(int, count, dbg->outlen); | |
1036 | if (copy_to_user(buf, dbg->out_msg, copy)) | |
5e631a03 | 1037 | return -EFAULT; |
e126ba97 EC |
1038 | |
1039 | *pos += copy; | |
1040 | ||
1041 | return copy; | |
1042 | } | |
1043 | ||
1044 | static const struct file_operations dfops = { | |
1045 | .owner = THIS_MODULE, | |
1046 | .open = simple_open, | |
1047 | .write = data_write, | |
1048 | .read = data_read, | |
1049 | }; | |
1050 | ||
1051 | static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count, | |
1052 | loff_t *pos) | |
1053 | { | |
1054 | struct mlx5_core_dev *dev = filp->private_data; | |
1055 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1056 | char outlen[8]; | |
1057 | int err; | |
1058 | ||
1059 | if (*pos) | |
1060 | return 0; | |
1061 | ||
1062 | err = snprintf(outlen, sizeof(outlen), "%d", dbg->outlen); | |
1063 | if (err < 0) | |
1064 | return err; | |
1065 | ||
1066 | if (copy_to_user(buf, &outlen, err)) | |
5e631a03 | 1067 | return -EFAULT; |
e126ba97 EC |
1068 | |
1069 | *pos += err; | |
1070 | ||
1071 | return err; | |
1072 | } | |
1073 | ||
1074 | static ssize_t outlen_write(struct file *filp, const char __user *buf, | |
1075 | size_t count, loff_t *pos) | |
1076 | { | |
1077 | struct mlx5_core_dev *dev = filp->private_data; | |
1078 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1079 | char outlen_str[8]; | |
1080 | int outlen; | |
1081 | void *ptr; | |
1082 | int err; | |
1083 | ||
1084 | if (*pos != 0 || count > 6) | |
1085 | return -EINVAL; | |
1086 | ||
1087 | kfree(dbg->out_msg); | |
1088 | dbg->out_msg = NULL; | |
1089 | dbg->outlen = 0; | |
1090 | ||
1091 | if (copy_from_user(outlen_str, buf, count)) | |
5e631a03 | 1092 | return -EFAULT; |
e126ba97 EC |
1093 | |
1094 | outlen_str[7] = 0; | |
1095 | ||
1096 | err = sscanf(outlen_str, "%d", &outlen); | |
1097 | if (err < 0) | |
1098 | return err; | |
1099 | ||
1100 | ptr = kzalloc(outlen, GFP_KERNEL); | |
1101 | if (!ptr) | |
1102 | return -ENOMEM; | |
1103 | ||
1104 | dbg->out_msg = ptr; | |
1105 | dbg->outlen = outlen; | |
1106 | ||
1107 | *pos = count; | |
1108 | ||
1109 | return count; | |
1110 | } | |
1111 | ||
1112 | static const struct file_operations olfops = { | |
1113 | .owner = THIS_MODULE, | |
1114 | .open = simple_open, | |
1115 | .write = outlen_write, | |
1116 | .read = outlen_read, | |
1117 | }; | |
1118 | ||
1119 | static void set_wqname(struct mlx5_core_dev *dev) | |
1120 | { | |
1121 | struct mlx5_cmd *cmd = &dev->cmd; | |
1122 | ||
1123 | snprintf(cmd->wq_name, sizeof(cmd->wq_name), "mlx5_cmd_%s", | |
1124 | dev_name(&dev->pdev->dev)); | |
1125 | } | |
1126 | ||
1127 | static void clean_debug_files(struct mlx5_core_dev *dev) | |
1128 | { | |
1129 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1130 | ||
1131 | if (!mlx5_debugfs_root) | |
1132 | return; | |
1133 | ||
1134 | mlx5_cmdif_debugfs_cleanup(dev); | |
1135 | debugfs_remove_recursive(dbg->dbg_root); | |
1136 | } | |
1137 | ||
1138 | static int create_debugfs_files(struct mlx5_core_dev *dev) | |
1139 | { | |
1140 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1141 | int err = -ENOMEM; | |
1142 | ||
1143 | if (!mlx5_debugfs_root) | |
1144 | return 0; | |
1145 | ||
1146 | dbg->dbg_root = debugfs_create_dir("cmd", dev->priv.dbg_root); | |
1147 | if (!dbg->dbg_root) | |
1148 | return err; | |
1149 | ||
1150 | dbg->dbg_in = debugfs_create_file("in", 0400, dbg->dbg_root, | |
1151 | dev, &dfops); | |
1152 | if (!dbg->dbg_in) | |
1153 | goto err_dbg; | |
1154 | ||
1155 | dbg->dbg_out = debugfs_create_file("out", 0200, dbg->dbg_root, | |
1156 | dev, &dfops); | |
1157 | if (!dbg->dbg_out) | |
1158 | goto err_dbg; | |
1159 | ||
1160 | dbg->dbg_outlen = debugfs_create_file("out_len", 0600, dbg->dbg_root, | |
1161 | dev, &olfops); | |
1162 | if (!dbg->dbg_outlen) | |
1163 | goto err_dbg; | |
1164 | ||
1165 | dbg->dbg_status = debugfs_create_u8("status", 0600, dbg->dbg_root, | |
1166 | &dbg->status); | |
1167 | if (!dbg->dbg_status) | |
1168 | goto err_dbg; | |
1169 | ||
1170 | dbg->dbg_run = debugfs_create_file("run", 0200, dbg->dbg_root, dev, &fops); | |
1171 | if (!dbg->dbg_run) | |
1172 | goto err_dbg; | |
1173 | ||
1174 | mlx5_cmdif_debugfs_init(dev); | |
1175 | ||
1176 | return 0; | |
1177 | ||
1178 | err_dbg: | |
1179 | clean_debug_files(dev); | |
1180 | return err; | |
1181 | } | |
1182 | ||
1183 | void mlx5_cmd_use_events(struct mlx5_core_dev *dev) | |
1184 | { | |
1185 | struct mlx5_cmd *cmd = &dev->cmd; | |
1186 | int i; | |
1187 | ||
1188 | for (i = 0; i < cmd->max_reg_cmds; i++) | |
1189 | down(&cmd->sem); | |
1190 | ||
1191 | down(&cmd->pages_sem); | |
1192 | ||
1193 | flush_workqueue(cmd->wq); | |
1194 | ||
1195 | cmd->mode = CMD_MODE_EVENTS; | |
1196 | ||
1197 | up(&cmd->pages_sem); | |
1198 | for (i = 0; i < cmd->max_reg_cmds; i++) | |
1199 | up(&cmd->sem); | |
1200 | } | |
1201 | ||
1202 | void mlx5_cmd_use_polling(struct mlx5_core_dev *dev) | |
1203 | { | |
1204 | struct mlx5_cmd *cmd = &dev->cmd; | |
1205 | int i; | |
1206 | ||
1207 | for (i = 0; i < cmd->max_reg_cmds; i++) | |
1208 | down(&cmd->sem); | |
1209 | ||
1210 | down(&cmd->pages_sem); | |
1211 | ||
1212 | flush_workqueue(cmd->wq); | |
1213 | cmd->mode = CMD_MODE_POLLING; | |
1214 | ||
1215 | up(&cmd->pages_sem); | |
1216 | for (i = 0; i < cmd->max_reg_cmds; i++) | |
1217 | up(&cmd->sem); | |
1218 | } | |
1219 | ||
746b5583 EC |
1220 | static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg) |
1221 | { | |
1222 | unsigned long flags; | |
1223 | ||
1224 | if (msg->cache) { | |
1225 | spin_lock_irqsave(&msg->cache->lock, flags); | |
1226 | list_add_tail(&msg->list, &msg->cache->head); | |
1227 | spin_unlock_irqrestore(&msg->cache->lock, flags); | |
1228 | } else { | |
1229 | mlx5_free_cmd_msg(dev, msg); | |
1230 | } | |
1231 | } | |
1232 | ||
020446e0 | 1233 | void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec) |
e126ba97 EC |
1234 | { |
1235 | struct mlx5_cmd *cmd = &dev->cmd; | |
1236 | struct mlx5_cmd_work_ent *ent; | |
1237 | mlx5_cmd_cbk_t callback; | |
1238 | void *context; | |
1239 | int err; | |
1240 | int i; | |
746b5583 EC |
1241 | s64 ds; |
1242 | struct mlx5_cmd_stats *stats; | |
1243 | unsigned long flags; | |
020446e0 | 1244 | unsigned long vector; |
e126ba97 | 1245 | |
020446e0 EC |
1246 | /* there can be at most 32 command queues */ |
1247 | vector = vec & 0xffffffff; | |
e126ba97 EC |
1248 | for (i = 0; i < (1 << cmd->log_sz); i++) { |
1249 | if (test_bit(i, &vector)) { | |
11940c87 DC |
1250 | struct semaphore *sem; |
1251 | ||
e126ba97 | 1252 | ent = cmd->ent_arr[i]; |
11940c87 DC |
1253 | if (ent->page_queue) |
1254 | sem = &cmd->pages_sem; | |
1255 | else | |
1256 | sem = &cmd->sem; | |
14a70046 | 1257 | ent->ts2 = ktime_get_ns(); |
e126ba97 EC |
1258 | memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out)); |
1259 | dump_command(dev, ent, 0); | |
1260 | if (!ent->ret) { | |
1261 | if (!cmd->checksum_disabled) | |
1262 | ent->ret = verify_signature(ent); | |
1263 | else | |
1264 | ent->ret = 0; | |
020446e0 EC |
1265 | if (vec & MLX5_TRIGGERED_CMD_COMP) |
1266 | ent->status = MLX5_DRIVER_STATUS_ABORTED; | |
1267 | else | |
1268 | ent->status = ent->lay->status_own >> 1; | |
1269 | ||
e126ba97 EC |
1270 | mlx5_core_dbg(dev, "command completed. ret 0x%x, delivery status %s(0x%x)\n", |
1271 | ent->ret, deliv_status_to_str(ent->status), ent->status); | |
1272 | } | |
1273 | free_ent(cmd, ent->idx); | |
020446e0 | 1274 | |
e126ba97 | 1275 | if (ent->callback) { |
14a70046 | 1276 | ds = ent->ts2 - ent->ts1; |
746b5583 EC |
1277 | if (ent->op < ARRAY_SIZE(cmd->stats)) { |
1278 | stats = &cmd->stats[ent->op]; | |
1279 | spin_lock_irqsave(&stats->lock, flags); | |
1280 | stats->sum += ds; | |
1281 | ++stats->n; | |
1282 | spin_unlock_irqrestore(&stats->lock, flags); | |
1283 | } | |
1284 | ||
e126ba97 EC |
1285 | callback = ent->callback; |
1286 | context = ent->context; | |
1287 | err = ent->ret; | |
746b5583 EC |
1288 | if (!err) |
1289 | err = mlx5_copy_from_msg(ent->uout, | |
1290 | ent->out, | |
1291 | ent->uout_size); | |
1292 | ||
1293 | mlx5_free_cmd_msg(dev, ent->out); | |
1294 | free_msg(dev, ent->in); | |
1295 | ||
be87544d | 1296 | err = err ? err : ent->status; |
e126ba97 EC |
1297 | free_cmd(ent); |
1298 | callback(err, context); | |
1299 | } else { | |
1300 | complete(&ent->done); | |
1301 | } | |
11940c87 | 1302 | up(sem); |
e126ba97 EC |
1303 | } |
1304 | } | |
1305 | } | |
1306 | EXPORT_SYMBOL(mlx5_cmd_comp_handler); | |
1307 | ||
1308 | static int status_to_err(u8 status) | |
1309 | { | |
1310 | return status ? -1 : 0; /* TBD more meaningful codes */ | |
1311 | } | |
1312 | ||
746b5583 EC |
1313 | static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size, |
1314 | gfp_t gfp) | |
e126ba97 EC |
1315 | { |
1316 | struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM); | |
1317 | struct mlx5_cmd *cmd = &dev->cmd; | |
1318 | struct cache_ent *ent = NULL; | |
1319 | ||
1320 | if (in_size > MED_LIST_SIZE && in_size <= LONG_LIST_SIZE) | |
1321 | ent = &cmd->cache.large; | |
1322 | else if (in_size > 16 && in_size <= MED_LIST_SIZE) | |
1323 | ent = &cmd->cache.med; | |
1324 | ||
1325 | if (ent) { | |
746b5583 | 1326 | spin_lock_irq(&ent->lock); |
e126ba97 EC |
1327 | if (!list_empty(&ent->head)) { |
1328 | msg = list_entry(ent->head.next, typeof(*msg), list); | |
1329 | /* For cached lists, we must explicitly state what is | |
1330 | * the real size | |
1331 | */ | |
1332 | msg->len = in_size; | |
1333 | list_del(&msg->list); | |
1334 | } | |
746b5583 | 1335 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
1336 | } |
1337 | ||
1338 | if (IS_ERR(msg)) | |
746b5583 | 1339 | msg = mlx5_alloc_cmd_msg(dev, gfp, in_size); |
e126ba97 EC |
1340 | |
1341 | return msg; | |
1342 | } | |
1343 | ||
89d44f0a MD |
1344 | static u16 opcode_from_in(struct mlx5_inbox_hdr *in) |
1345 | { | |
1346 | return be16_to_cpu(in->opcode); | |
1347 | } | |
1348 | ||
e126ba97 EC |
1349 | static int is_manage_pages(struct mlx5_inbox_hdr *in) |
1350 | { | |
1351 | return be16_to_cpu(in->opcode) == MLX5_CMD_OP_MANAGE_PAGES; | |
1352 | } | |
1353 | ||
746b5583 EC |
1354 | static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, |
1355 | int out_size, mlx5_cmd_cbk_t callback, void *context) | |
e126ba97 EC |
1356 | { |
1357 | struct mlx5_cmd_msg *inb; | |
1358 | struct mlx5_cmd_msg *outb; | |
1359 | int pages_queue; | |
746b5583 | 1360 | gfp_t gfp; |
e126ba97 EC |
1361 | int err; |
1362 | u8 status = 0; | |
89d44f0a MD |
1363 | u32 drv_synd; |
1364 | ||
1365 | if (pci_channel_offline(dev->pdev) || | |
1366 | dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { | |
1367 | err = mlx5_internal_err_ret_value(dev, opcode_from_in(in), &drv_synd, &status); | |
1368 | *get_synd_ptr(out) = cpu_to_be32(drv_synd); | |
1369 | *get_status_ptr(out) = status; | |
1370 | return err; | |
1371 | } | |
e126ba97 EC |
1372 | |
1373 | pages_queue = is_manage_pages(in); | |
746b5583 | 1374 | gfp = callback ? GFP_ATOMIC : GFP_KERNEL; |
e126ba97 | 1375 | |
746b5583 | 1376 | inb = alloc_msg(dev, in_size, gfp); |
e126ba97 EC |
1377 | if (IS_ERR(inb)) { |
1378 | err = PTR_ERR(inb); | |
1379 | return err; | |
1380 | } | |
1381 | ||
1382 | err = mlx5_copy_to_msg(inb, in, in_size); | |
1383 | if (err) { | |
1384 | mlx5_core_warn(dev, "err %d\n", err); | |
1385 | goto out_in; | |
1386 | } | |
1387 | ||
746b5583 | 1388 | outb = mlx5_alloc_cmd_msg(dev, gfp, out_size); |
e126ba97 EC |
1389 | if (IS_ERR(outb)) { |
1390 | err = PTR_ERR(outb); | |
1391 | goto out_in; | |
1392 | } | |
1393 | ||
746b5583 EC |
1394 | err = mlx5_cmd_invoke(dev, inb, outb, out, out_size, callback, context, |
1395 | pages_queue, &status); | |
e126ba97 EC |
1396 | if (err) |
1397 | goto out_out; | |
1398 | ||
1399 | mlx5_core_dbg(dev, "err %d, status %d\n", err, status); | |
1400 | if (status) { | |
1401 | err = status_to_err(status); | |
1402 | goto out_out; | |
1403 | } | |
1404 | ||
05e4ecd1 EC |
1405 | if (!callback) |
1406 | err = mlx5_copy_from_msg(out, outb, out_size); | |
e126ba97 EC |
1407 | |
1408 | out_out: | |
746b5583 EC |
1409 | if (!callback) |
1410 | mlx5_free_cmd_msg(dev, outb); | |
e126ba97 EC |
1411 | |
1412 | out_in: | |
746b5583 EC |
1413 | if (!callback) |
1414 | free_msg(dev, inb); | |
e126ba97 EC |
1415 | return err; |
1416 | } | |
746b5583 EC |
1417 | |
1418 | int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, | |
1419 | int out_size) | |
1420 | { | |
1421 | return cmd_exec(dev, in, in_size, out, out_size, NULL, NULL); | |
1422 | } | |
e126ba97 EC |
1423 | EXPORT_SYMBOL(mlx5_cmd_exec); |
1424 | ||
746b5583 EC |
1425 | int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size, |
1426 | void *out, int out_size, mlx5_cmd_cbk_t callback, | |
1427 | void *context) | |
1428 | { | |
1429 | return cmd_exec(dev, in, in_size, out, out_size, callback, context); | |
1430 | } | |
1431 | EXPORT_SYMBOL(mlx5_cmd_exec_cb); | |
1432 | ||
e126ba97 EC |
1433 | static void destroy_msg_cache(struct mlx5_core_dev *dev) |
1434 | { | |
1435 | struct mlx5_cmd *cmd = &dev->cmd; | |
1436 | struct mlx5_cmd_msg *msg; | |
1437 | struct mlx5_cmd_msg *n; | |
1438 | ||
1439 | list_for_each_entry_safe(msg, n, &cmd->cache.large.head, list) { | |
1440 | list_del(&msg->list); | |
1441 | mlx5_free_cmd_msg(dev, msg); | |
1442 | } | |
1443 | ||
1444 | list_for_each_entry_safe(msg, n, &cmd->cache.med.head, list) { | |
1445 | list_del(&msg->list); | |
1446 | mlx5_free_cmd_msg(dev, msg); | |
1447 | } | |
1448 | } | |
1449 | ||
1450 | static int create_msg_cache(struct mlx5_core_dev *dev) | |
1451 | { | |
1452 | struct mlx5_cmd *cmd = &dev->cmd; | |
1453 | struct mlx5_cmd_msg *msg; | |
1454 | int err; | |
1455 | int i; | |
1456 | ||
1457 | spin_lock_init(&cmd->cache.large.lock); | |
1458 | INIT_LIST_HEAD(&cmd->cache.large.head); | |
1459 | spin_lock_init(&cmd->cache.med.lock); | |
1460 | INIT_LIST_HEAD(&cmd->cache.med.head); | |
1461 | ||
1462 | for (i = 0; i < NUM_LONG_LISTS; i++) { | |
1463 | msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE); | |
1464 | if (IS_ERR(msg)) { | |
1465 | err = PTR_ERR(msg); | |
1466 | goto ex_err; | |
1467 | } | |
1468 | msg->cache = &cmd->cache.large; | |
1469 | list_add_tail(&msg->list, &cmd->cache.large.head); | |
1470 | } | |
1471 | ||
1472 | for (i = 0; i < NUM_MED_LISTS; i++) { | |
1473 | msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE); | |
1474 | if (IS_ERR(msg)) { | |
1475 | err = PTR_ERR(msg); | |
1476 | goto ex_err; | |
1477 | } | |
1478 | msg->cache = &cmd->cache.med; | |
1479 | list_add_tail(&msg->list, &cmd->cache.med.head); | |
1480 | } | |
1481 | ||
1482 | return 0; | |
1483 | ||
1484 | ex_err: | |
1485 | destroy_msg_cache(dev); | |
1486 | return err; | |
1487 | } | |
1488 | ||
64599cca EC |
1489 | static int alloc_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) |
1490 | { | |
1491 | struct device *ddev = &dev->pdev->dev; | |
1492 | ||
1493 | cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE, | |
1494 | &cmd->alloc_dma, GFP_KERNEL); | |
1495 | if (!cmd->cmd_alloc_buf) | |
1496 | return -ENOMEM; | |
1497 | ||
1498 | /* make sure it is aligned to 4K */ | |
1499 | if (!((uintptr_t)cmd->cmd_alloc_buf & (MLX5_ADAPTER_PAGE_SIZE - 1))) { | |
1500 | cmd->cmd_buf = cmd->cmd_alloc_buf; | |
1501 | cmd->dma = cmd->alloc_dma; | |
1502 | cmd->alloc_size = MLX5_ADAPTER_PAGE_SIZE; | |
1503 | return 0; | |
1504 | } | |
1505 | ||
1506 | dma_free_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE, cmd->cmd_alloc_buf, | |
1507 | cmd->alloc_dma); | |
1508 | cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev, | |
1509 | 2 * MLX5_ADAPTER_PAGE_SIZE - 1, | |
1510 | &cmd->alloc_dma, GFP_KERNEL); | |
1511 | if (!cmd->cmd_alloc_buf) | |
1512 | return -ENOMEM; | |
1513 | ||
1514 | cmd->cmd_buf = PTR_ALIGN(cmd->cmd_alloc_buf, MLX5_ADAPTER_PAGE_SIZE); | |
1515 | cmd->dma = ALIGN(cmd->alloc_dma, MLX5_ADAPTER_PAGE_SIZE); | |
1516 | cmd->alloc_size = 2 * MLX5_ADAPTER_PAGE_SIZE - 1; | |
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | static void free_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) | |
1521 | { | |
1522 | struct device *ddev = &dev->pdev->dev; | |
1523 | ||
1524 | dma_free_coherent(ddev, cmd->alloc_size, cmd->cmd_alloc_buf, | |
1525 | cmd->alloc_dma); | |
1526 | } | |
1527 | ||
e126ba97 EC |
1528 | int mlx5_cmd_init(struct mlx5_core_dev *dev) |
1529 | { | |
1530 | int size = sizeof(struct mlx5_cmd_prot_block); | |
1531 | int align = roundup_pow_of_two(size); | |
1532 | struct mlx5_cmd *cmd = &dev->cmd; | |
1533 | u32 cmd_h, cmd_l; | |
1534 | u16 cmd_if_rev; | |
1535 | int err; | |
1536 | int i; | |
1537 | ||
a31208b1 | 1538 | memset(cmd, 0, sizeof(*cmd)); |
e126ba97 EC |
1539 | cmd_if_rev = cmdif_rev(dev); |
1540 | if (cmd_if_rev != CMD_IF_REV) { | |
1541 | dev_err(&dev->pdev->dev, | |
1542 | "Driver cmdif rev(%d) differs from firmware's(%d)\n", | |
1543 | CMD_IF_REV, cmd_if_rev); | |
1544 | return -EINVAL; | |
1545 | } | |
1546 | ||
1547 | cmd->pool = pci_pool_create("mlx5_cmd", dev->pdev, size, align, 0); | |
1548 | if (!cmd->pool) | |
1549 | return -ENOMEM; | |
1550 | ||
64599cca EC |
1551 | err = alloc_cmd_page(dev, cmd); |
1552 | if (err) | |
e126ba97 | 1553 | goto err_free_pool; |
e126ba97 EC |
1554 | |
1555 | cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff; | |
1556 | cmd->log_sz = cmd_l >> 4 & 0xf; | |
1557 | cmd->log_stride = cmd_l & 0xf; | |
1558 | if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) { | |
1559 | dev_err(&dev->pdev->dev, "firmware reports too many outstanding commands %d\n", | |
1560 | 1 << cmd->log_sz); | |
1561 | err = -EINVAL; | |
64599cca | 1562 | goto err_free_page; |
e126ba97 EC |
1563 | } |
1564 | ||
2d446d18 | 1565 | if (cmd->log_sz + cmd->log_stride > MLX5_ADAPTER_PAGE_SHIFT) { |
e126ba97 EC |
1566 | dev_err(&dev->pdev->dev, "command queue size overflow\n"); |
1567 | err = -EINVAL; | |
64599cca | 1568 | goto err_free_page; |
e126ba97 EC |
1569 | } |
1570 | ||
c1868b82 | 1571 | cmd->checksum_disabled = 1; |
e126ba97 EC |
1572 | cmd->max_reg_cmds = (1 << cmd->log_sz) - 1; |
1573 | cmd->bitmask = (1 << cmd->max_reg_cmds) - 1; | |
1574 | ||
1575 | cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16; | |
1576 | if (cmd->cmdif_rev > CMD_IF_REV) { | |
1577 | dev_err(&dev->pdev->dev, "driver does not support command interface version. driver %d, firmware %d\n", | |
1578 | CMD_IF_REV, cmd->cmdif_rev); | |
1579 | err = -ENOTSUPP; | |
64599cca | 1580 | goto err_free_page; |
e126ba97 EC |
1581 | } |
1582 | ||
1583 | spin_lock_init(&cmd->alloc_lock); | |
1584 | spin_lock_init(&cmd->token_lock); | |
1585 | for (i = 0; i < ARRAY_SIZE(cmd->stats); i++) | |
1586 | spin_lock_init(&cmd->stats[i].lock); | |
1587 | ||
1588 | sema_init(&cmd->sem, cmd->max_reg_cmds); | |
1589 | sema_init(&cmd->pages_sem, 1); | |
1590 | ||
1591 | cmd_h = (u32)((u64)(cmd->dma) >> 32); | |
1592 | cmd_l = (u32)(cmd->dma); | |
1593 | if (cmd_l & 0xfff) { | |
1594 | dev_err(&dev->pdev->dev, "invalid command queue address\n"); | |
1595 | err = -ENOMEM; | |
64599cca | 1596 | goto err_free_page; |
e126ba97 EC |
1597 | } |
1598 | ||
1599 | iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h); | |
1600 | iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz); | |
1601 | ||
1602 | /* Make sure firmware sees the complete address before we proceed */ | |
1603 | wmb(); | |
1604 | ||
1605 | mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma)); | |
1606 | ||
1607 | cmd->mode = CMD_MODE_POLLING; | |
1608 | ||
1609 | err = create_msg_cache(dev); | |
1610 | if (err) { | |
1611 | dev_err(&dev->pdev->dev, "failed to create command cache\n"); | |
64599cca | 1612 | goto err_free_page; |
e126ba97 EC |
1613 | } |
1614 | ||
1615 | set_wqname(dev); | |
1616 | cmd->wq = create_singlethread_workqueue(cmd->wq_name); | |
1617 | if (!cmd->wq) { | |
1618 | dev_err(&dev->pdev->dev, "failed to create command workqueue\n"); | |
1619 | err = -ENOMEM; | |
1620 | goto err_cache; | |
1621 | } | |
1622 | ||
1623 | err = create_debugfs_files(dev); | |
1624 | if (err) { | |
1625 | err = -ENOMEM; | |
1626 | goto err_wq; | |
1627 | } | |
1628 | ||
1629 | return 0; | |
1630 | ||
1631 | err_wq: | |
1632 | destroy_workqueue(cmd->wq); | |
1633 | ||
1634 | err_cache: | |
1635 | destroy_msg_cache(dev); | |
1636 | ||
64599cca EC |
1637 | err_free_page: |
1638 | free_cmd_page(dev, cmd); | |
e126ba97 EC |
1639 | |
1640 | err_free_pool: | |
1641 | pci_pool_destroy(cmd->pool); | |
1642 | ||
1643 | return err; | |
1644 | } | |
1645 | EXPORT_SYMBOL(mlx5_cmd_init); | |
1646 | ||
1647 | void mlx5_cmd_cleanup(struct mlx5_core_dev *dev) | |
1648 | { | |
1649 | struct mlx5_cmd *cmd = &dev->cmd; | |
1650 | ||
1651 | clean_debug_files(dev); | |
1652 | destroy_workqueue(cmd->wq); | |
1653 | destroy_msg_cache(dev); | |
64599cca | 1654 | free_cmd_page(dev, cmd); |
e126ba97 EC |
1655 | pci_pool_destroy(cmd->pool); |
1656 | } | |
1657 | EXPORT_SYMBOL(mlx5_cmd_cleanup); | |
1658 | ||
1659 | static const char *cmd_status_str(u8 status) | |
1660 | { | |
1661 | switch (status) { | |
1662 | case MLX5_CMD_STAT_OK: | |
1663 | return "OK"; | |
1664 | case MLX5_CMD_STAT_INT_ERR: | |
1665 | return "internal error"; | |
1666 | case MLX5_CMD_STAT_BAD_OP_ERR: | |
1667 | return "bad operation"; | |
1668 | case MLX5_CMD_STAT_BAD_PARAM_ERR: | |
1669 | return "bad parameter"; | |
1670 | case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: | |
1671 | return "bad system state"; | |
1672 | case MLX5_CMD_STAT_BAD_RES_ERR: | |
1673 | return "bad resource"; | |
1674 | case MLX5_CMD_STAT_RES_BUSY: | |
1675 | return "resource busy"; | |
1676 | case MLX5_CMD_STAT_LIM_ERR: | |
1677 | return "limits exceeded"; | |
1678 | case MLX5_CMD_STAT_BAD_RES_STATE_ERR: | |
1679 | return "bad resource state"; | |
1680 | case MLX5_CMD_STAT_IX_ERR: | |
1681 | return "bad index"; | |
1682 | case MLX5_CMD_STAT_NO_RES_ERR: | |
1683 | return "no resources"; | |
1684 | case MLX5_CMD_STAT_BAD_INP_LEN_ERR: | |
1685 | return "bad input length"; | |
1686 | case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: | |
1687 | return "bad output length"; | |
1688 | case MLX5_CMD_STAT_BAD_QP_STATE_ERR: | |
1689 | return "bad QP state"; | |
1690 | case MLX5_CMD_STAT_BAD_PKT_ERR: | |
1691 | return "bad packet (discarded)"; | |
1692 | case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: | |
1693 | return "bad size too many outstanding CQEs"; | |
1694 | default: | |
1695 | return "unknown status"; | |
1696 | } | |
1697 | } | |
1698 | ||
c7a08ac7 | 1699 | static int cmd_status_to_err(u8 status) |
e126ba97 | 1700 | { |
c7a08ac7 | 1701 | switch (status) { |
e126ba97 EC |
1702 | case MLX5_CMD_STAT_OK: return 0; |
1703 | case MLX5_CMD_STAT_INT_ERR: return -EIO; | |
1704 | case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL; | |
1705 | case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL; | |
1706 | case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO; | |
1707 | case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL; | |
1708 | case MLX5_CMD_STAT_RES_BUSY: return -EBUSY; | |
9c865131 | 1709 | case MLX5_CMD_STAT_LIM_ERR: return -ENOMEM; |
e126ba97 EC |
1710 | case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL; |
1711 | case MLX5_CMD_STAT_IX_ERR: return -EINVAL; | |
1712 | case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN; | |
1713 | case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO; | |
1714 | case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO; | |
1715 | case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL; | |
1716 | case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL; | |
1717 | case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL; | |
1718 | default: return -EIO; | |
1719 | } | |
1720 | } | |
c7a08ac7 EC |
1721 | |
1722 | /* this will be available till all the commands use set/get macros */ | |
1723 | int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr) | |
1724 | { | |
1725 | if (!hdr->status) | |
1726 | return 0; | |
1727 | ||
1728 | pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n", | |
1729 | cmd_status_str(hdr->status), hdr->status, | |
1730 | be32_to_cpu(hdr->syndrome)); | |
1731 | ||
1732 | return cmd_status_to_err(hdr->status); | |
1733 | } | |
b775516b EC |
1734 | |
1735 | int mlx5_cmd_status_to_err_v2(void *ptr) | |
1736 | { | |
1737 | u32 syndrome; | |
1738 | u8 status; | |
1739 | ||
1740 | status = be32_to_cpu(*(__be32 *)ptr) >> 24; | |
1741 | if (!status) | |
1742 | return 0; | |
1743 | ||
1744 | syndrome = be32_to_cpu(*(__be32 *)(ptr + 4)); | |
1745 | ||
1746 | pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n", | |
1747 | cmd_status_str(status), status, syndrome); | |
1748 | ||
1749 | return cmd_status_to_err(status); | |
1750 | } |