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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 | ||
e126ba97 EC |
56 | enum { |
57 | MLX5_CMD_DELIVERY_STAT_OK = 0x0, | |
58 | MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR = 0x1, | |
59 | MLX5_CMD_DELIVERY_STAT_TOK_ERR = 0x2, | |
60 | MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR = 0x3, | |
61 | MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR = 0x4, | |
62 | MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR = 0x5, | |
63 | MLX5_CMD_DELIVERY_STAT_FW_ERR = 0x6, | |
64 | MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR = 0x7, | |
65 | MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR = 0x8, | |
66 | MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR = 0x9, | |
67 | MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR = 0x10, | |
68 | }; | |
69 | ||
e126ba97 EC |
70 | static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd, |
71 | struct mlx5_cmd_msg *in, | |
72 | struct mlx5_cmd_msg *out, | |
746b5583 | 73 | void *uout, int uout_size, |
e126ba97 EC |
74 | mlx5_cmd_cbk_t cbk, |
75 | void *context, int page_queue) | |
76 | { | |
77 | gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL; | |
78 | struct mlx5_cmd_work_ent *ent; | |
79 | ||
80 | ent = kzalloc(sizeof(*ent), alloc_flags); | |
81 | if (!ent) | |
82 | return ERR_PTR(-ENOMEM); | |
83 | ||
84 | ent->in = in; | |
85 | ent->out = out; | |
746b5583 EC |
86 | ent->uout = uout; |
87 | ent->uout_size = uout_size; | |
e126ba97 EC |
88 | ent->callback = cbk; |
89 | ent->context = context; | |
90 | ent->cmd = cmd; | |
91 | ent->page_queue = page_queue; | |
92 | ||
93 | return ent; | |
94 | } | |
95 | ||
96 | static u8 alloc_token(struct mlx5_cmd *cmd) | |
97 | { | |
98 | u8 token; | |
99 | ||
100 | spin_lock(&cmd->token_lock); | |
4cbdd27c AS |
101 | cmd->token++; |
102 | if (cmd->token == 0) | |
103 | cmd->token++; | |
104 | token = cmd->token; | |
e126ba97 EC |
105 | spin_unlock(&cmd->token_lock); |
106 | ||
107 | return token; | |
108 | } | |
109 | ||
110 | static int alloc_ent(struct mlx5_cmd *cmd) | |
111 | { | |
112 | unsigned long flags; | |
113 | int ret; | |
114 | ||
115 | spin_lock_irqsave(&cmd->alloc_lock, flags); | |
116 | ret = find_first_bit(&cmd->bitmask, cmd->max_reg_cmds); | |
117 | if (ret < cmd->max_reg_cmds) | |
118 | clear_bit(ret, &cmd->bitmask); | |
119 | spin_unlock_irqrestore(&cmd->alloc_lock, flags); | |
120 | ||
121 | return ret < cmd->max_reg_cmds ? ret : -ENOMEM; | |
122 | } | |
123 | ||
124 | static void free_ent(struct mlx5_cmd *cmd, int idx) | |
125 | { | |
126 | unsigned long flags; | |
127 | ||
128 | spin_lock_irqsave(&cmd->alloc_lock, flags); | |
129 | set_bit(idx, &cmd->bitmask); | |
130 | spin_unlock_irqrestore(&cmd->alloc_lock, flags); | |
131 | } | |
132 | ||
133 | static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx) | |
134 | { | |
135 | return cmd->cmd_buf + (idx << cmd->log_stride); | |
136 | } | |
137 | ||
2c0f8ce1 | 138 | static u8 xor8_buf(void *buf, size_t offset, int len) |
e126ba97 EC |
139 | { |
140 | u8 *ptr = buf; | |
141 | u8 sum = 0; | |
142 | int i; | |
2c0f8ce1 | 143 | int end = len + offset; |
e126ba97 | 144 | |
2c0f8ce1 | 145 | for (i = offset; i < end; i++) |
e126ba97 EC |
146 | sum ^= ptr[i]; |
147 | ||
148 | return sum; | |
149 | } | |
150 | ||
151 | static int verify_block_sig(struct mlx5_cmd_prot_block *block) | |
152 | { | |
2c0f8ce1 PB |
153 | size_t rsvd0_off = offsetof(struct mlx5_cmd_prot_block, rsvd0); |
154 | int xor_len = sizeof(*block) - sizeof(block->data) - 1; | |
155 | ||
156 | if (xor8_buf(block, rsvd0_off, xor_len) != 0xff) | |
e126ba97 EC |
157 | return -EINVAL; |
158 | ||
2c0f8ce1 | 159 | if (xor8_buf(block, 0, sizeof(*block)) != 0xff) |
e126ba97 EC |
160 | return -EINVAL; |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
2c0f8ce1 | 165 | static void calc_block_sig(struct mlx5_cmd_prot_block *block) |
e126ba97 | 166 | { |
2c0f8ce1 PB |
167 | int ctrl_xor_len = sizeof(*block) - sizeof(block->data) - 2; |
168 | size_t rsvd0_off = offsetof(struct mlx5_cmd_prot_block, rsvd0); | |
169 | ||
170 | block->ctrl_sig = ~xor8_buf(block, rsvd0_off, ctrl_xor_len); | |
171 | block->sig = ~xor8_buf(block, 0, sizeof(*block) - 1); | |
e126ba97 EC |
172 | } |
173 | ||
2c0f8ce1 | 174 | static void calc_chain_sig(struct mlx5_cmd_msg *msg) |
e126ba97 EC |
175 | { |
176 | struct mlx5_cmd_mailbox *next = msg->next; | |
2c0f8ce1 PB |
177 | int size = msg->len; |
178 | int blen = size - min_t(int, sizeof(msg->first.data), size); | |
179 | int n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) | |
180 | / MLX5_CMD_DATA_BLOCK_SIZE; | |
181 | int i = 0; | |
182 | ||
183 | for (i = 0; i < n && next; i++) { | |
184 | calc_block_sig(next->buf); | |
e126ba97 EC |
185 | next = next->next; |
186 | } | |
187 | } | |
188 | ||
c1868b82 | 189 | static void set_signature(struct mlx5_cmd_work_ent *ent, int csum) |
e126ba97 | 190 | { |
2c0f8ce1 PB |
191 | ent->lay->sig = ~xor8_buf(ent->lay, 0, sizeof(*ent->lay)); |
192 | if (csum) { | |
193 | calc_chain_sig(ent->in); | |
194 | calc_chain_sig(ent->out); | |
195 | } | |
e126ba97 EC |
196 | } |
197 | ||
198 | static void poll_timeout(struct mlx5_cmd_work_ent *ent) | |
199 | { | |
200 | unsigned long poll_end = jiffies + msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000); | |
201 | u8 own; | |
202 | ||
203 | do { | |
204 | own = ent->lay->status_own; | |
205 | if (!(own & CMD_OWNER_HW)) { | |
206 | ent->ret = 0; | |
207 | return; | |
208 | } | |
209 | usleep_range(5000, 10000); | |
210 | } while (time_before(jiffies, poll_end)); | |
211 | ||
212 | ent->ret = -ETIMEDOUT; | |
213 | } | |
214 | ||
215 | static void free_cmd(struct mlx5_cmd_work_ent *ent) | |
216 | { | |
217 | kfree(ent); | |
218 | } | |
219 | ||
e126ba97 EC |
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; | |
2c0f8ce1 PB |
225 | int size = ent->out->len; |
226 | int blen = size - min_t(int, sizeof(ent->out->first.data), size); | |
227 | int n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) | |
228 | / MLX5_CMD_DATA_BLOCK_SIZE; | |
229 | int i = 0; | |
e126ba97 | 230 | |
2c0f8ce1 | 231 | sig = xor8_buf(ent->lay, 0, sizeof(*ent->lay)); |
e126ba97 EC |
232 | if (sig != 0xff) |
233 | return -EINVAL; | |
234 | ||
2c0f8ce1 | 235 | for (i = 0; i < n && next; i++) { |
e126ba97 EC |
236 | err = verify_block_sig(next->buf); |
237 | if (err) | |
238 | return err; | |
239 | ||
240 | next = next->next; | |
241 | } | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | static void dump_buf(void *buf, int size, int data_only, int offset) | |
247 | { | |
248 | __be32 *p = buf; | |
249 | int i; | |
250 | ||
251 | for (i = 0; i < size; i += 16) { | |
252 | pr_debug("%03x: %08x %08x %08x %08x\n", offset, be32_to_cpu(p[0]), | |
253 | be32_to_cpu(p[1]), be32_to_cpu(p[2]), | |
254 | be32_to_cpu(p[3])); | |
255 | p += 4; | |
256 | offset += 16; | |
257 | } | |
258 | if (!data_only) | |
259 | pr_debug("\n"); | |
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: | |
a750276f OG |
281 | case MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT: |
282 | case MLX5_CMD_OP_DESTROY_QOS_PARA_VPORT: | |
89d44f0a MD |
283 | case MLX5_CMD_OP_DEALLOC_PD: |
284 | case MLX5_CMD_OP_DEALLOC_UAR: | |
20bb566b | 285 | case MLX5_CMD_OP_DETACH_FROM_MCG: |
89d44f0a MD |
286 | case MLX5_CMD_OP_DEALLOC_XRCD: |
287 | case MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN: | |
288 | case MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT: | |
289 | case MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY: | |
84df61eb AH |
290 | case MLX5_CMD_OP_DESTROY_LAG: |
291 | case MLX5_CMD_OP_DESTROY_VPORT_LAG: | |
89d44f0a MD |
292 | case MLX5_CMD_OP_DESTROY_TIR: |
293 | case MLX5_CMD_OP_DESTROY_SQ: | |
294 | case MLX5_CMD_OP_DESTROY_RQ: | |
295 | case MLX5_CMD_OP_DESTROY_RMP: | |
296 | case MLX5_CMD_OP_DESTROY_TIS: | |
297 | case MLX5_CMD_OP_DESTROY_RQT: | |
298 | case MLX5_CMD_OP_DESTROY_FLOW_TABLE: | |
299 | case MLX5_CMD_OP_DESTROY_FLOW_GROUP: | |
300 | case MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY: | |
9dc0b289 | 301 | case MLX5_CMD_OP_DEALLOC_FLOW_COUNTER: |
0d834442 MHY |
302 | case MLX5_CMD_OP_2ERR_QP: |
303 | case MLX5_CMD_OP_2RST_QP: | |
304 | case MLX5_CMD_OP_MODIFY_NIC_VPORT_CONTEXT: | |
305 | case MLX5_CMD_OP_MODIFY_FLOW_TABLE: | |
306 | case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: | |
307 | case MLX5_CMD_OP_SET_FLOW_TABLE_ROOT: | |
575ddf58 | 308 | case MLX5_CMD_OP_DEALLOC_ENCAP_HEADER: |
2de24fed | 309 | case MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT: |
6062118d | 310 | case MLX5_CMD_OP_FPGA_DESTROY_QP: |
89d44f0a MD |
311 | return MLX5_CMD_STAT_OK; |
312 | ||
313 | case MLX5_CMD_OP_QUERY_HCA_CAP: | |
314 | case MLX5_CMD_OP_QUERY_ADAPTER: | |
315 | case MLX5_CMD_OP_INIT_HCA: | |
316 | case MLX5_CMD_OP_ENABLE_HCA: | |
317 | case MLX5_CMD_OP_QUERY_PAGES: | |
318 | case MLX5_CMD_OP_SET_HCA_CAP: | |
319 | case MLX5_CMD_OP_QUERY_ISSI: | |
320 | case MLX5_CMD_OP_SET_ISSI: | |
321 | case MLX5_CMD_OP_CREATE_MKEY: | |
322 | case MLX5_CMD_OP_QUERY_MKEY: | |
323 | case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS: | |
324 | case MLX5_CMD_OP_PAGE_FAULT_RESUME: | |
325 | case MLX5_CMD_OP_CREATE_EQ: | |
326 | case MLX5_CMD_OP_QUERY_EQ: | |
327 | case MLX5_CMD_OP_GEN_EQE: | |
328 | case MLX5_CMD_OP_CREATE_CQ: | |
329 | case MLX5_CMD_OP_QUERY_CQ: | |
330 | case MLX5_CMD_OP_MODIFY_CQ: | |
331 | case MLX5_CMD_OP_CREATE_QP: | |
332 | case MLX5_CMD_OP_RST2INIT_QP: | |
333 | case MLX5_CMD_OP_INIT2RTR_QP: | |
334 | case MLX5_CMD_OP_RTR2RTS_QP: | |
335 | case MLX5_CMD_OP_RTS2RTS_QP: | |
336 | case MLX5_CMD_OP_SQERR2RTS_QP: | |
89d44f0a MD |
337 | case MLX5_CMD_OP_QUERY_QP: |
338 | case MLX5_CMD_OP_SQD_RTS_QP: | |
339 | case MLX5_CMD_OP_INIT2INIT_QP: | |
340 | case MLX5_CMD_OP_CREATE_PSV: | |
341 | case MLX5_CMD_OP_CREATE_SRQ: | |
342 | case MLX5_CMD_OP_QUERY_SRQ: | |
343 | case MLX5_CMD_OP_ARM_RQ: | |
344 | case MLX5_CMD_OP_CREATE_XRC_SRQ: | |
345 | case MLX5_CMD_OP_QUERY_XRC_SRQ: | |
346 | case MLX5_CMD_OP_ARM_XRC_SRQ: | |
347 | case MLX5_CMD_OP_CREATE_DCT: | |
348 | case MLX5_CMD_OP_DRAIN_DCT: | |
349 | case MLX5_CMD_OP_QUERY_DCT: | |
350 | case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: | |
351 | case MLX5_CMD_OP_QUERY_VPORT_STATE: | |
352 | case MLX5_CMD_OP_MODIFY_VPORT_STATE: | |
353 | case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: | |
354 | case MLX5_CMD_OP_MODIFY_ESW_VPORT_CONTEXT: | |
355 | case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT: | |
89d44f0a MD |
356 | case MLX5_CMD_OP_QUERY_ROCE_ADDRESS: |
357 | case MLX5_CMD_OP_SET_ROCE_ADDRESS: | |
358 | case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: | |
359 | case MLX5_CMD_OP_MODIFY_HCA_VPORT_CONTEXT: | |
360 | case MLX5_CMD_OP_QUERY_HCA_VPORT_GID: | |
361 | case MLX5_CMD_OP_QUERY_HCA_VPORT_PKEY: | |
362 | case MLX5_CMD_OP_QUERY_VPORT_COUNTER: | |
363 | case MLX5_CMD_OP_ALLOC_Q_COUNTER: | |
364 | case MLX5_CMD_OP_QUERY_Q_COUNTER: | |
1f30a86c OG |
365 | case MLX5_CMD_OP_SET_RATE_LIMIT: |
366 | case MLX5_CMD_OP_QUERY_RATE_LIMIT: | |
a750276f OG |
367 | case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: |
368 | case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT: | |
369 | case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT: | |
370 | case MLX5_CMD_OP_CREATE_QOS_PARA_VPORT: | |
89d44f0a MD |
371 | case MLX5_CMD_OP_ALLOC_PD: |
372 | case MLX5_CMD_OP_ALLOC_UAR: | |
373 | case MLX5_CMD_OP_CONFIG_INT_MODERATION: | |
374 | case MLX5_CMD_OP_ACCESS_REG: | |
375 | case MLX5_CMD_OP_ATTACH_TO_MCG: | |
376 | case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG: | |
377 | case MLX5_CMD_OP_MAD_IFC: | |
378 | case MLX5_CMD_OP_QUERY_MAD_DEMUX: | |
379 | case MLX5_CMD_OP_SET_MAD_DEMUX: | |
380 | case MLX5_CMD_OP_NOP: | |
381 | case MLX5_CMD_OP_ALLOC_XRCD: | |
382 | case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: | |
383 | case MLX5_CMD_OP_QUERY_CONG_STATUS: | |
384 | case MLX5_CMD_OP_MODIFY_CONG_STATUS: | |
385 | case MLX5_CMD_OP_QUERY_CONG_PARAMS: | |
386 | case MLX5_CMD_OP_MODIFY_CONG_PARAMS: | |
387 | case MLX5_CMD_OP_QUERY_CONG_STATISTICS: | |
388 | case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: | |
389 | case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: | |
390 | case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: | |
84df61eb AH |
391 | case MLX5_CMD_OP_CREATE_LAG: |
392 | case MLX5_CMD_OP_MODIFY_LAG: | |
393 | case MLX5_CMD_OP_QUERY_LAG: | |
394 | case MLX5_CMD_OP_CREATE_VPORT_LAG: | |
89d44f0a MD |
395 | case MLX5_CMD_OP_CREATE_TIR: |
396 | case MLX5_CMD_OP_MODIFY_TIR: | |
397 | case MLX5_CMD_OP_QUERY_TIR: | |
398 | case MLX5_CMD_OP_CREATE_SQ: | |
399 | case MLX5_CMD_OP_MODIFY_SQ: | |
400 | case MLX5_CMD_OP_QUERY_SQ: | |
401 | case MLX5_CMD_OP_CREATE_RQ: | |
402 | case MLX5_CMD_OP_MODIFY_RQ: | |
403 | case MLX5_CMD_OP_QUERY_RQ: | |
404 | case MLX5_CMD_OP_CREATE_RMP: | |
405 | case MLX5_CMD_OP_MODIFY_RMP: | |
406 | case MLX5_CMD_OP_QUERY_RMP: | |
407 | case MLX5_CMD_OP_CREATE_TIS: | |
408 | case MLX5_CMD_OP_MODIFY_TIS: | |
409 | case MLX5_CMD_OP_QUERY_TIS: | |
410 | case MLX5_CMD_OP_CREATE_RQT: | |
411 | case MLX5_CMD_OP_MODIFY_RQT: | |
412 | case MLX5_CMD_OP_QUERY_RQT: | |
0d834442 | 413 | |
89d44f0a MD |
414 | case MLX5_CMD_OP_CREATE_FLOW_TABLE: |
415 | case MLX5_CMD_OP_QUERY_FLOW_TABLE: | |
416 | case MLX5_CMD_OP_CREATE_FLOW_GROUP: | |
417 | case MLX5_CMD_OP_QUERY_FLOW_GROUP: | |
89d44f0a | 418 | case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: |
9dc0b289 AV |
419 | case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: |
420 | case MLX5_CMD_OP_QUERY_FLOW_COUNTER: | |
575ddf58 | 421 | case MLX5_CMD_OP_ALLOC_ENCAP_HEADER: |
2de24fed | 422 | case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: |
6062118d IT |
423 | case MLX5_CMD_OP_FPGA_CREATE_QP: |
424 | case MLX5_CMD_OP_FPGA_MODIFY_QP: | |
425 | case MLX5_CMD_OP_FPGA_QUERY_QP: | |
426 | case MLX5_CMD_OP_FPGA_QUERY_QP_COUNTERS: | |
89d44f0a MD |
427 | *status = MLX5_DRIVER_STATUS_ABORTED; |
428 | *synd = MLX5_DRIVER_SYND; | |
429 | return -EIO; | |
430 | default: | |
431 | mlx5_core_err(dev, "Unknown FW command (%d)\n", op); | |
432 | return -EINVAL; | |
433 | } | |
434 | } | |
435 | ||
e126ba97 EC |
436 | const char *mlx5_command_str(int command) |
437 | { | |
42ca502e | 438 | #define MLX5_COMMAND_STR_CASE(__cmd) case MLX5_CMD_OP_ ## __cmd: return #__cmd |
b3f63c3d | 439 | |
42ca502e AV |
440 | switch (command) { |
441 | MLX5_COMMAND_STR_CASE(QUERY_HCA_CAP); | |
442 | MLX5_COMMAND_STR_CASE(QUERY_ADAPTER); | |
443 | MLX5_COMMAND_STR_CASE(INIT_HCA); | |
444 | MLX5_COMMAND_STR_CASE(TEARDOWN_HCA); | |
445 | MLX5_COMMAND_STR_CASE(ENABLE_HCA); | |
446 | MLX5_COMMAND_STR_CASE(DISABLE_HCA); | |
447 | MLX5_COMMAND_STR_CASE(QUERY_PAGES); | |
448 | MLX5_COMMAND_STR_CASE(MANAGE_PAGES); | |
449 | MLX5_COMMAND_STR_CASE(SET_HCA_CAP); | |
450 | MLX5_COMMAND_STR_CASE(QUERY_ISSI); | |
451 | MLX5_COMMAND_STR_CASE(SET_ISSI); | |
452 | MLX5_COMMAND_STR_CASE(CREATE_MKEY); | |
453 | MLX5_COMMAND_STR_CASE(QUERY_MKEY); | |
454 | MLX5_COMMAND_STR_CASE(DESTROY_MKEY); | |
455 | MLX5_COMMAND_STR_CASE(QUERY_SPECIAL_CONTEXTS); | |
456 | MLX5_COMMAND_STR_CASE(PAGE_FAULT_RESUME); | |
457 | MLX5_COMMAND_STR_CASE(CREATE_EQ); | |
458 | MLX5_COMMAND_STR_CASE(DESTROY_EQ); | |
459 | MLX5_COMMAND_STR_CASE(QUERY_EQ); | |
460 | MLX5_COMMAND_STR_CASE(GEN_EQE); | |
461 | MLX5_COMMAND_STR_CASE(CREATE_CQ); | |
462 | MLX5_COMMAND_STR_CASE(DESTROY_CQ); | |
463 | MLX5_COMMAND_STR_CASE(QUERY_CQ); | |
464 | MLX5_COMMAND_STR_CASE(MODIFY_CQ); | |
465 | MLX5_COMMAND_STR_CASE(CREATE_QP); | |
466 | MLX5_COMMAND_STR_CASE(DESTROY_QP); | |
467 | MLX5_COMMAND_STR_CASE(RST2INIT_QP); | |
468 | MLX5_COMMAND_STR_CASE(INIT2RTR_QP); | |
469 | MLX5_COMMAND_STR_CASE(RTR2RTS_QP); | |
470 | MLX5_COMMAND_STR_CASE(RTS2RTS_QP); | |
471 | MLX5_COMMAND_STR_CASE(SQERR2RTS_QP); | |
472 | MLX5_COMMAND_STR_CASE(2ERR_QP); | |
473 | MLX5_COMMAND_STR_CASE(2RST_QP); | |
474 | MLX5_COMMAND_STR_CASE(QUERY_QP); | |
475 | MLX5_COMMAND_STR_CASE(SQD_RTS_QP); | |
476 | MLX5_COMMAND_STR_CASE(INIT2INIT_QP); | |
477 | MLX5_COMMAND_STR_CASE(CREATE_PSV); | |
478 | MLX5_COMMAND_STR_CASE(DESTROY_PSV); | |
479 | MLX5_COMMAND_STR_CASE(CREATE_SRQ); | |
480 | MLX5_COMMAND_STR_CASE(DESTROY_SRQ); | |
481 | MLX5_COMMAND_STR_CASE(QUERY_SRQ); | |
482 | MLX5_COMMAND_STR_CASE(ARM_RQ); | |
483 | MLX5_COMMAND_STR_CASE(CREATE_XRC_SRQ); | |
484 | MLX5_COMMAND_STR_CASE(DESTROY_XRC_SRQ); | |
485 | MLX5_COMMAND_STR_CASE(QUERY_XRC_SRQ); | |
486 | MLX5_COMMAND_STR_CASE(ARM_XRC_SRQ); | |
487 | MLX5_COMMAND_STR_CASE(CREATE_DCT); | |
488 | MLX5_COMMAND_STR_CASE(DESTROY_DCT); | |
489 | MLX5_COMMAND_STR_CASE(DRAIN_DCT); | |
490 | MLX5_COMMAND_STR_CASE(QUERY_DCT); | |
491 | MLX5_COMMAND_STR_CASE(ARM_DCT_FOR_KEY_VIOLATION); | |
492 | MLX5_COMMAND_STR_CASE(QUERY_VPORT_STATE); | |
493 | MLX5_COMMAND_STR_CASE(MODIFY_VPORT_STATE); | |
494 | MLX5_COMMAND_STR_CASE(QUERY_ESW_VPORT_CONTEXT); | |
495 | MLX5_COMMAND_STR_CASE(MODIFY_ESW_VPORT_CONTEXT); | |
496 | MLX5_COMMAND_STR_CASE(QUERY_NIC_VPORT_CONTEXT); | |
497 | MLX5_COMMAND_STR_CASE(MODIFY_NIC_VPORT_CONTEXT); | |
498 | MLX5_COMMAND_STR_CASE(QUERY_ROCE_ADDRESS); | |
499 | MLX5_COMMAND_STR_CASE(SET_ROCE_ADDRESS); | |
500 | MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_CONTEXT); | |
501 | MLX5_COMMAND_STR_CASE(MODIFY_HCA_VPORT_CONTEXT); | |
502 | MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_GID); | |
503 | MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_PKEY); | |
504 | MLX5_COMMAND_STR_CASE(QUERY_VPORT_COUNTER); | |
505 | MLX5_COMMAND_STR_CASE(ALLOC_Q_COUNTER); | |
506 | MLX5_COMMAND_STR_CASE(DEALLOC_Q_COUNTER); | |
507 | MLX5_COMMAND_STR_CASE(QUERY_Q_COUNTER); | |
1f30a86c OG |
508 | MLX5_COMMAND_STR_CASE(SET_RATE_LIMIT); |
509 | MLX5_COMMAND_STR_CASE(QUERY_RATE_LIMIT); | |
a750276f OG |
510 | MLX5_COMMAND_STR_CASE(CREATE_SCHEDULING_ELEMENT); |
511 | MLX5_COMMAND_STR_CASE(DESTROY_SCHEDULING_ELEMENT); | |
512 | MLX5_COMMAND_STR_CASE(QUERY_SCHEDULING_ELEMENT); | |
513 | MLX5_COMMAND_STR_CASE(MODIFY_SCHEDULING_ELEMENT); | |
514 | MLX5_COMMAND_STR_CASE(CREATE_QOS_PARA_VPORT); | |
515 | MLX5_COMMAND_STR_CASE(DESTROY_QOS_PARA_VPORT); | |
42ca502e AV |
516 | MLX5_COMMAND_STR_CASE(ALLOC_PD); |
517 | MLX5_COMMAND_STR_CASE(DEALLOC_PD); | |
518 | MLX5_COMMAND_STR_CASE(ALLOC_UAR); | |
519 | MLX5_COMMAND_STR_CASE(DEALLOC_UAR); | |
520 | MLX5_COMMAND_STR_CASE(CONFIG_INT_MODERATION); | |
521 | MLX5_COMMAND_STR_CASE(ACCESS_REG); | |
522 | MLX5_COMMAND_STR_CASE(ATTACH_TO_MCG); | |
20bb566b | 523 | MLX5_COMMAND_STR_CASE(DETACH_FROM_MCG); |
42ca502e AV |
524 | MLX5_COMMAND_STR_CASE(GET_DROPPED_PACKET_LOG); |
525 | MLX5_COMMAND_STR_CASE(MAD_IFC); | |
526 | MLX5_COMMAND_STR_CASE(QUERY_MAD_DEMUX); | |
527 | MLX5_COMMAND_STR_CASE(SET_MAD_DEMUX); | |
528 | MLX5_COMMAND_STR_CASE(NOP); | |
529 | MLX5_COMMAND_STR_CASE(ALLOC_XRCD); | |
530 | MLX5_COMMAND_STR_CASE(DEALLOC_XRCD); | |
531 | MLX5_COMMAND_STR_CASE(ALLOC_TRANSPORT_DOMAIN); | |
532 | MLX5_COMMAND_STR_CASE(DEALLOC_TRANSPORT_DOMAIN); | |
533 | MLX5_COMMAND_STR_CASE(QUERY_CONG_STATUS); | |
534 | MLX5_COMMAND_STR_CASE(MODIFY_CONG_STATUS); | |
535 | MLX5_COMMAND_STR_CASE(QUERY_CONG_PARAMS); | |
536 | MLX5_COMMAND_STR_CASE(MODIFY_CONG_PARAMS); | |
537 | MLX5_COMMAND_STR_CASE(QUERY_CONG_STATISTICS); | |
538 | MLX5_COMMAND_STR_CASE(ADD_VXLAN_UDP_DPORT); | |
539 | MLX5_COMMAND_STR_CASE(DELETE_VXLAN_UDP_DPORT); | |
540 | MLX5_COMMAND_STR_CASE(SET_L2_TABLE_ENTRY); | |
541 | MLX5_COMMAND_STR_CASE(QUERY_L2_TABLE_ENTRY); | |
542 | MLX5_COMMAND_STR_CASE(DELETE_L2_TABLE_ENTRY); | |
543 | MLX5_COMMAND_STR_CASE(SET_WOL_ROL); | |
544 | MLX5_COMMAND_STR_CASE(QUERY_WOL_ROL); | |
84df61eb AH |
545 | MLX5_COMMAND_STR_CASE(CREATE_LAG); |
546 | MLX5_COMMAND_STR_CASE(MODIFY_LAG); | |
547 | MLX5_COMMAND_STR_CASE(QUERY_LAG); | |
548 | MLX5_COMMAND_STR_CASE(DESTROY_LAG); | |
549 | MLX5_COMMAND_STR_CASE(CREATE_VPORT_LAG); | |
550 | MLX5_COMMAND_STR_CASE(DESTROY_VPORT_LAG); | |
42ca502e AV |
551 | MLX5_COMMAND_STR_CASE(CREATE_TIR); |
552 | MLX5_COMMAND_STR_CASE(MODIFY_TIR); | |
553 | MLX5_COMMAND_STR_CASE(DESTROY_TIR); | |
554 | MLX5_COMMAND_STR_CASE(QUERY_TIR); | |
555 | MLX5_COMMAND_STR_CASE(CREATE_SQ); | |
556 | MLX5_COMMAND_STR_CASE(MODIFY_SQ); | |
557 | MLX5_COMMAND_STR_CASE(DESTROY_SQ); | |
558 | MLX5_COMMAND_STR_CASE(QUERY_SQ); | |
559 | MLX5_COMMAND_STR_CASE(CREATE_RQ); | |
560 | MLX5_COMMAND_STR_CASE(MODIFY_RQ); | |
561 | MLX5_COMMAND_STR_CASE(DESTROY_RQ); | |
562 | MLX5_COMMAND_STR_CASE(QUERY_RQ); | |
563 | MLX5_COMMAND_STR_CASE(CREATE_RMP); | |
564 | MLX5_COMMAND_STR_CASE(MODIFY_RMP); | |
565 | MLX5_COMMAND_STR_CASE(DESTROY_RMP); | |
566 | MLX5_COMMAND_STR_CASE(QUERY_RMP); | |
567 | MLX5_COMMAND_STR_CASE(CREATE_TIS); | |
568 | MLX5_COMMAND_STR_CASE(MODIFY_TIS); | |
569 | MLX5_COMMAND_STR_CASE(DESTROY_TIS); | |
570 | MLX5_COMMAND_STR_CASE(QUERY_TIS); | |
571 | MLX5_COMMAND_STR_CASE(CREATE_RQT); | |
572 | MLX5_COMMAND_STR_CASE(MODIFY_RQT); | |
573 | MLX5_COMMAND_STR_CASE(DESTROY_RQT); | |
574 | MLX5_COMMAND_STR_CASE(QUERY_RQT); | |
575 | MLX5_COMMAND_STR_CASE(SET_FLOW_TABLE_ROOT); | |
576 | MLX5_COMMAND_STR_CASE(CREATE_FLOW_TABLE); | |
577 | MLX5_COMMAND_STR_CASE(DESTROY_FLOW_TABLE); | |
578 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE); | |
579 | MLX5_COMMAND_STR_CASE(CREATE_FLOW_GROUP); | |
580 | MLX5_COMMAND_STR_CASE(DESTROY_FLOW_GROUP); | |
581 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_GROUP); | |
582 | MLX5_COMMAND_STR_CASE(SET_FLOW_TABLE_ENTRY); | |
583 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE_ENTRY); | |
584 | MLX5_COMMAND_STR_CASE(DELETE_FLOW_TABLE_ENTRY); | |
9dc0b289 AV |
585 | MLX5_COMMAND_STR_CASE(ALLOC_FLOW_COUNTER); |
586 | MLX5_COMMAND_STR_CASE(DEALLOC_FLOW_COUNTER); | |
587 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_COUNTER); | |
5be1ea89 | 588 | MLX5_COMMAND_STR_CASE(MODIFY_FLOW_TABLE); |
575ddf58 IL |
589 | MLX5_COMMAND_STR_CASE(ALLOC_ENCAP_HEADER); |
590 | MLX5_COMMAND_STR_CASE(DEALLOC_ENCAP_HEADER); | |
2de24fed OG |
591 | MLX5_COMMAND_STR_CASE(ALLOC_MODIFY_HEADER_CONTEXT); |
592 | MLX5_COMMAND_STR_CASE(DEALLOC_MODIFY_HEADER_CONTEXT); | |
6062118d IT |
593 | MLX5_COMMAND_STR_CASE(FPGA_CREATE_QP); |
594 | MLX5_COMMAND_STR_CASE(FPGA_MODIFY_QP); | |
595 | MLX5_COMMAND_STR_CASE(FPGA_QUERY_QP); | |
596 | MLX5_COMMAND_STR_CASE(FPGA_QUERY_QP_COUNTERS); | |
597 | MLX5_COMMAND_STR_CASE(FPGA_DESTROY_QP); | |
e126ba97 EC |
598 | default: return "unknown command opcode"; |
599 | } | |
600 | } | |
601 | ||
c4f287c4 SM |
602 | static const char *cmd_status_str(u8 status) |
603 | { | |
604 | switch (status) { | |
605 | case MLX5_CMD_STAT_OK: | |
606 | return "OK"; | |
607 | case MLX5_CMD_STAT_INT_ERR: | |
608 | return "internal error"; | |
609 | case MLX5_CMD_STAT_BAD_OP_ERR: | |
610 | return "bad operation"; | |
611 | case MLX5_CMD_STAT_BAD_PARAM_ERR: | |
612 | return "bad parameter"; | |
613 | case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: | |
614 | return "bad system state"; | |
615 | case MLX5_CMD_STAT_BAD_RES_ERR: | |
616 | return "bad resource"; | |
617 | case MLX5_CMD_STAT_RES_BUSY: | |
618 | return "resource busy"; | |
619 | case MLX5_CMD_STAT_LIM_ERR: | |
620 | return "limits exceeded"; | |
621 | case MLX5_CMD_STAT_BAD_RES_STATE_ERR: | |
622 | return "bad resource state"; | |
623 | case MLX5_CMD_STAT_IX_ERR: | |
624 | return "bad index"; | |
625 | case MLX5_CMD_STAT_NO_RES_ERR: | |
626 | return "no resources"; | |
627 | case MLX5_CMD_STAT_BAD_INP_LEN_ERR: | |
628 | return "bad input length"; | |
629 | case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: | |
630 | return "bad output length"; | |
631 | case MLX5_CMD_STAT_BAD_QP_STATE_ERR: | |
632 | return "bad QP state"; | |
633 | case MLX5_CMD_STAT_BAD_PKT_ERR: | |
634 | return "bad packet (discarded)"; | |
635 | case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: | |
636 | return "bad size too many outstanding CQEs"; | |
637 | default: | |
638 | return "unknown status"; | |
639 | } | |
640 | } | |
641 | ||
642 | static int cmd_status_to_err(u8 status) | |
643 | { | |
644 | switch (status) { | |
645 | case MLX5_CMD_STAT_OK: return 0; | |
646 | case MLX5_CMD_STAT_INT_ERR: return -EIO; | |
647 | case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL; | |
648 | case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL; | |
649 | case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO; | |
650 | case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL; | |
651 | case MLX5_CMD_STAT_RES_BUSY: return -EBUSY; | |
652 | case MLX5_CMD_STAT_LIM_ERR: return -ENOMEM; | |
653 | case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL; | |
654 | case MLX5_CMD_STAT_IX_ERR: return -EINVAL; | |
655 | case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN; | |
656 | case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO; | |
657 | case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO; | |
658 | case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL; | |
659 | case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL; | |
660 | case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL; | |
661 | default: return -EIO; | |
662 | } | |
663 | } | |
664 | ||
665 | struct mlx5_ifc_mbox_out_bits { | |
666 | u8 status[0x8]; | |
667 | u8 reserved_at_8[0x18]; | |
668 | ||
669 | u8 syndrome[0x20]; | |
670 | ||
671 | u8 reserved_at_40[0x40]; | |
672 | }; | |
673 | ||
674 | struct mlx5_ifc_mbox_in_bits { | |
675 | u8 opcode[0x10]; | |
676 | u8 reserved_at_10[0x10]; | |
677 | ||
678 | u8 reserved_at_20[0x10]; | |
679 | u8 op_mod[0x10]; | |
680 | ||
681 | u8 reserved_at_40[0x40]; | |
682 | }; | |
683 | ||
684 | void mlx5_cmd_mbox_status(void *out, u8 *status, u32 *syndrome) | |
685 | { | |
686 | *status = MLX5_GET(mbox_out, out, status); | |
687 | *syndrome = MLX5_GET(mbox_out, out, syndrome); | |
688 | } | |
689 | ||
690 | static int mlx5_cmd_check(struct mlx5_core_dev *dev, void *in, void *out) | |
691 | { | |
692 | u32 syndrome; | |
693 | u8 status; | |
694 | u16 opcode; | |
695 | u16 op_mod; | |
696 | ||
697 | mlx5_cmd_mbox_status(out, &status, &syndrome); | |
698 | if (!status) | |
699 | return 0; | |
700 | ||
701 | opcode = MLX5_GET(mbox_in, in, opcode); | |
702 | op_mod = MLX5_GET(mbox_in, in, op_mod); | |
703 | ||
704 | mlx5_core_err(dev, | |
705 | "%s(0x%x) op_mod(0x%x) failed, status %s(0x%x), syndrome (0x%x)\n", | |
706 | mlx5_command_str(opcode), | |
707 | opcode, op_mod, | |
708 | cmd_status_str(status), | |
709 | status, | |
710 | syndrome); | |
711 | ||
712 | return cmd_status_to_err(status); | |
713 | } | |
714 | ||
e126ba97 EC |
715 | static void dump_command(struct mlx5_core_dev *dev, |
716 | struct mlx5_cmd_work_ent *ent, int input) | |
717 | { | |
e126ba97 | 718 | struct mlx5_cmd_msg *msg = input ? ent->in : ent->out; |
c4f287c4 | 719 | u16 op = MLX5_GET(mbox_in, ent->lay->in, opcode); |
e126ba97 EC |
720 | struct mlx5_cmd_mailbox *next = msg->next; |
721 | int data_only; | |
f241e749 | 722 | u32 offset = 0; |
e126ba97 EC |
723 | int dump_len; |
724 | ||
725 | data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA)); | |
726 | ||
727 | if (data_only) | |
728 | mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA, | |
729 | "dump command data %s(0x%x) %s\n", | |
730 | mlx5_command_str(op), op, | |
731 | input ? "INPUT" : "OUTPUT"); | |
732 | else | |
733 | mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n", | |
734 | mlx5_command_str(op), op, | |
735 | input ? "INPUT" : "OUTPUT"); | |
736 | ||
737 | if (data_only) { | |
738 | if (input) { | |
739 | dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset); | |
740 | offset += sizeof(ent->lay->in); | |
741 | } else { | |
742 | dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset); | |
743 | offset += sizeof(ent->lay->out); | |
744 | } | |
745 | } else { | |
746 | dump_buf(ent->lay, sizeof(*ent->lay), 0, offset); | |
747 | offset += sizeof(*ent->lay); | |
748 | } | |
749 | ||
750 | while (next && offset < msg->len) { | |
751 | if (data_only) { | |
752 | dump_len = min_t(int, MLX5_CMD_DATA_BLOCK_SIZE, msg->len - offset); | |
753 | dump_buf(next->buf, dump_len, 1, offset); | |
754 | offset += MLX5_CMD_DATA_BLOCK_SIZE; | |
755 | } else { | |
756 | mlx5_core_dbg(dev, "command block:\n"); | |
757 | dump_buf(next->buf, sizeof(struct mlx5_cmd_prot_block), 0, offset); | |
758 | offset += sizeof(struct mlx5_cmd_prot_block); | |
759 | } | |
760 | next = next->next; | |
761 | } | |
762 | ||
763 | if (data_only) | |
764 | pr_debug("\n"); | |
765 | } | |
766 | ||
65ee6708 MHY |
767 | static u16 msg_to_opcode(struct mlx5_cmd_msg *in) |
768 | { | |
c4f287c4 | 769 | return MLX5_GET(mbox_in, in->first.data, opcode); |
65ee6708 MHY |
770 | } |
771 | ||
772 | static void cb_timeout_handler(struct work_struct *work) | |
773 | { | |
774 | struct delayed_work *dwork = container_of(work, struct delayed_work, | |
775 | work); | |
776 | struct mlx5_cmd_work_ent *ent = container_of(dwork, | |
777 | struct mlx5_cmd_work_ent, | |
778 | cb_timeout_work); | |
779 | struct mlx5_core_dev *dev = container_of(ent->cmd, struct mlx5_core_dev, | |
780 | cmd); | |
781 | ||
782 | ent->ret = -ETIMEDOUT; | |
783 | mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", | |
784 | mlx5_command_str(msg_to_opcode(ent->in)), | |
785 | msg_to_opcode(ent->in)); | |
73dd3a48 | 786 | mlx5_cmd_comp_handler(dev, 1UL << ent->idx, true); |
65ee6708 MHY |
787 | } |
788 | ||
219c81f7 MS |
789 | static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg); |
790 | static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev, | |
791 | struct mlx5_cmd_msg *msg); | |
792 | ||
e126ba97 EC |
793 | static void cmd_work_handler(struct work_struct *work) |
794 | { | |
795 | struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work); | |
796 | struct mlx5_cmd *cmd = ent->cmd; | |
797 | struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd); | |
65ee6708 | 798 | unsigned long cb_timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); |
e126ba97 EC |
799 | struct mlx5_cmd_layout *lay; |
800 | struct semaphore *sem; | |
020446e0 | 801 | unsigned long flags; |
4525abea | 802 | bool poll_cmd = ent->polling; |
219c81f7 | 803 | int alloc_ret; |
4525abea | 804 | |
e126ba97 EC |
805 | |
806 | sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem; | |
807 | down(sem); | |
808 | if (!ent->page_queue) { | |
219c81f7 MS |
809 | alloc_ret = alloc_ent(cmd); |
810 | if (alloc_ret < 0) { | |
e126ba97 | 811 | mlx5_core_err(dev, "failed to allocate command entry\n"); |
219c81f7 MS |
812 | if (ent->callback) { |
813 | ent->callback(-EAGAIN, ent->context); | |
814 | mlx5_free_cmd_msg(dev, ent->out); | |
815 | free_msg(dev, ent->in); | |
816 | free_cmd(ent); | |
817 | } else { | |
818 | ent->ret = -EAGAIN; | |
819 | complete(&ent->done); | |
820 | } | |
e126ba97 EC |
821 | up(sem); |
822 | return; | |
823 | } | |
219c81f7 | 824 | ent->idx = alloc_ret; |
e126ba97 EC |
825 | } else { |
826 | ent->idx = cmd->max_reg_cmds; | |
020446e0 EC |
827 | spin_lock_irqsave(&cmd->alloc_lock, flags); |
828 | clear_bit(ent->idx, &cmd->bitmask); | |
829 | spin_unlock_irqrestore(&cmd->alloc_lock, flags); | |
e126ba97 EC |
830 | } |
831 | ||
e126ba97 | 832 | cmd->ent_arr[ent->idx] = ent; |
73dd3a48 | 833 | set_bit(MLX5_CMD_ENT_STATE_PENDING_COMP, &ent->state); |
e126ba97 EC |
834 | lay = get_inst(cmd, ent->idx); |
835 | ent->lay = lay; | |
836 | memset(lay, 0, sizeof(*lay)); | |
837 | memcpy(lay->in, ent->in->first.data, sizeof(lay->in)); | |
746b5583 | 838 | ent->op = be32_to_cpu(lay->in[0]) >> 16; |
e126ba97 EC |
839 | if (ent->in->next) |
840 | lay->in_ptr = cpu_to_be64(ent->in->next->dma); | |
841 | lay->inlen = cpu_to_be32(ent->in->len); | |
842 | if (ent->out->next) | |
843 | lay->out_ptr = cpu_to_be64(ent->out->next->dma); | |
844 | lay->outlen = cpu_to_be32(ent->out->len); | |
845 | lay->type = MLX5_PCI_CMD_XPORT; | |
846 | lay->token = ent->token; | |
847 | lay->status_own = CMD_OWNER_HW; | |
c1868b82 | 848 | set_signature(ent, !cmd->checksum_disabled); |
e126ba97 | 849 | dump_command(dev, ent, 1); |
14a70046 | 850 | ent->ts1 = ktime_get_ns(); |
e126ba97 | 851 | |
65ee6708 MHY |
852 | if (ent->callback) |
853 | schedule_delayed_work(&ent->cb_timeout_work, cb_timeout); | |
854 | ||
73dd3a48 MHY |
855 | /* Skip sending command to fw if internal error */ |
856 | if (pci_channel_offline(dev->pdev) || | |
857 | dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { | |
858 | u8 status = 0; | |
859 | u32 drv_synd; | |
860 | ||
861 | ent->ret = mlx5_internal_err_ret_value(dev, msg_to_opcode(ent->in), &drv_synd, &status); | |
862 | MLX5_SET(mbox_out, ent->out, status, status); | |
863 | MLX5_SET(mbox_out, ent->out, syndrome, drv_synd); | |
864 | ||
865 | mlx5_cmd_comp_handler(dev, 1UL << ent->idx, true); | |
866 | return; | |
867 | } | |
868 | ||
e126ba97 | 869 | /* ring doorbell after the descriptor is valid */ |
21db5074 | 870 | mlx5_core_dbg(dev, "writing 0x%x to command doorbell\n", 1 << ent->idx); |
e126ba97 EC |
871 | wmb(); |
872 | iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell); | |
e126ba97 | 873 | mmiowb(); |
21db5074 | 874 | /* if not in polling don't use ent after this point */ |
4525abea | 875 | if (cmd->mode == CMD_MODE_POLLING || poll_cmd) { |
e126ba97 EC |
876 | poll_timeout(ent); |
877 | /* make sure we read the descriptor after ownership is SW */ | |
878 | rmb(); | |
73dd3a48 | 879 | mlx5_cmd_comp_handler(dev, 1UL << ent->idx, (ent->ret == -ETIMEDOUT)); |
e126ba97 EC |
880 | } |
881 | } | |
882 | ||
883 | static const char *deliv_status_to_str(u8 status) | |
884 | { | |
885 | switch (status) { | |
886 | case MLX5_CMD_DELIVERY_STAT_OK: | |
887 | return "no errors"; | |
888 | case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR: | |
889 | return "signature error"; | |
890 | case MLX5_CMD_DELIVERY_STAT_TOK_ERR: | |
891 | return "token error"; | |
892 | case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR: | |
893 | return "bad block number"; | |
894 | case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR: | |
895 | return "output pointer not aligned to block size"; | |
896 | case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR: | |
897 | return "input pointer not aligned to block size"; | |
898 | case MLX5_CMD_DELIVERY_STAT_FW_ERR: | |
899 | return "firmware internal error"; | |
900 | case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR: | |
901 | return "command input length error"; | |
902 | case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR: | |
bd10838a | 903 | return "command output length error"; |
e126ba97 EC |
904 | case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR: |
905 | return "reserved fields not cleared"; | |
906 | case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR: | |
907 | return "bad command descriptor type"; | |
908 | default: | |
909 | return "unknown status code"; | |
910 | } | |
911 | } | |
912 | ||
e126ba97 EC |
913 | static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent) |
914 | { | |
915 | unsigned long timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); | |
916 | struct mlx5_cmd *cmd = &dev->cmd; | |
917 | int err; | |
918 | ||
4525abea | 919 | if (cmd->mode == CMD_MODE_POLLING || ent->polling) { |
e126ba97 | 920 | wait_for_completion(&ent->done); |
9cba4ebc MHY |
921 | } else if (!wait_for_completion_timeout(&ent->done, timeout)) { |
922 | ent->ret = -ETIMEDOUT; | |
73dd3a48 | 923 | mlx5_cmd_comp_handler(dev, 1UL << ent->idx, true); |
e126ba97 | 924 | } |
9cba4ebc MHY |
925 | |
926 | err = ent->ret; | |
927 | ||
e126ba97 EC |
928 | if (err == -ETIMEDOUT) { |
929 | mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", | |
930 | mlx5_command_str(msg_to_opcode(ent->in)), | |
931 | msg_to_opcode(ent->in)); | |
932 | } | |
1a91de28 JP |
933 | mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n", |
934 | err, deliv_status_to_str(ent->status), ent->status); | |
e126ba97 EC |
935 | |
936 | return err; | |
937 | } | |
938 | ||
939 | /* Notes: | |
940 | * 1. Callback functions may not sleep | |
941 | * 2. page queue commands do not support asynchrous completion | |
942 | */ | |
943 | static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in, | |
746b5583 EC |
944 | struct mlx5_cmd_msg *out, void *uout, int uout_size, |
945 | mlx5_cmd_cbk_t callback, | |
2c0f8ce1 | 946 | void *context, int page_queue, u8 *status, |
4525abea | 947 | u8 token, bool force_polling) |
e126ba97 EC |
948 | { |
949 | struct mlx5_cmd *cmd = &dev->cmd; | |
950 | struct mlx5_cmd_work_ent *ent; | |
e126ba97 EC |
951 | struct mlx5_cmd_stats *stats; |
952 | int err = 0; | |
953 | s64 ds; | |
954 | u16 op; | |
955 | ||
956 | if (callback && page_queue) | |
957 | return -EINVAL; | |
958 | ||
746b5583 EC |
959 | ent = alloc_cmd(cmd, in, out, uout, uout_size, callback, context, |
960 | page_queue); | |
e126ba97 EC |
961 | if (IS_ERR(ent)) |
962 | return PTR_ERR(ent); | |
963 | ||
2c0f8ce1 | 964 | ent->token = token; |
4525abea | 965 | ent->polling = force_polling; |
2c0f8ce1 | 966 | |
e126ba97 EC |
967 | if (!callback) |
968 | init_completion(&ent->done); | |
969 | ||
65ee6708 | 970 | INIT_DELAYED_WORK(&ent->cb_timeout_work, cb_timeout_handler); |
e126ba97 EC |
971 | INIT_WORK(&ent->work, cmd_work_handler); |
972 | if (page_queue) { | |
973 | cmd_work_handler(&ent->work); | |
974 | } else if (!queue_work(cmd->wq, &ent->work)) { | |
975 | mlx5_core_warn(dev, "failed to queue work\n"); | |
976 | err = -ENOMEM; | |
977 | goto out_free; | |
978 | } | |
979 | ||
9cba4ebc MHY |
980 | if (callback) |
981 | goto out; | |
e126ba97 | 982 | |
9cba4ebc MHY |
983 | err = wait_func(dev, ent); |
984 | if (err == -ETIMEDOUT) | |
06187080 | 985 | goto out; |
9cba4ebc MHY |
986 | |
987 | ds = ent->ts2 - ent->ts1; | |
c4f287c4 | 988 | op = MLX5_GET(mbox_in, in->first.data, opcode); |
9cba4ebc MHY |
989 | if (op < ARRAY_SIZE(cmd->stats)) { |
990 | stats = &cmd->stats[op]; | |
991 | spin_lock_irq(&stats->lock); | |
992 | stats->sum += ds; | |
993 | ++stats->n; | |
994 | spin_unlock_irq(&stats->lock); | |
995 | } | |
996 | mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME, | |
997 | "fw exec time for %s is %lld nsec\n", | |
998 | mlx5_command_str(op), ds); | |
999 | *status = ent->status; | |
e126ba97 EC |
1000 | |
1001 | out_free: | |
1002 | free_cmd(ent); | |
1003 | out: | |
1004 | return err; | |
1005 | } | |
1006 | ||
1007 | static ssize_t dbg_write(struct file *filp, const char __user *buf, | |
1008 | size_t count, loff_t *pos) | |
1009 | { | |
1010 | struct mlx5_core_dev *dev = filp->private_data; | |
1011 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1012 | char lbuf[3]; | |
1013 | int err; | |
1014 | ||
1015 | if (!dbg->in_msg || !dbg->out_msg) | |
1016 | return -ENOMEM; | |
1017 | ||
1018 | if (copy_from_user(lbuf, buf, sizeof(lbuf))) | |
5e631a03 | 1019 | return -EFAULT; |
e126ba97 EC |
1020 | |
1021 | lbuf[sizeof(lbuf) - 1] = 0; | |
1022 | ||
1023 | if (strcmp(lbuf, "go")) | |
1024 | return -EINVAL; | |
1025 | ||
1026 | err = mlx5_cmd_exec(dev, dbg->in_msg, dbg->inlen, dbg->out_msg, dbg->outlen); | |
1027 | ||
1028 | return err ? err : count; | |
1029 | } | |
1030 | ||
e126ba97 EC |
1031 | static const struct file_operations fops = { |
1032 | .owner = THIS_MODULE, | |
1033 | .open = simple_open, | |
1034 | .write = dbg_write, | |
1035 | }; | |
1036 | ||
2c0f8ce1 PB |
1037 | static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size, |
1038 | u8 token) | |
e126ba97 EC |
1039 | { |
1040 | struct mlx5_cmd_prot_block *block; | |
1041 | struct mlx5_cmd_mailbox *next; | |
1042 | int copy; | |
1043 | ||
1044 | if (!to || !from) | |
1045 | return -ENOMEM; | |
1046 | ||
1047 | copy = min_t(int, size, sizeof(to->first.data)); | |
1048 | memcpy(to->first.data, from, copy); | |
1049 | size -= copy; | |
1050 | from += copy; | |
1051 | ||
1052 | next = to->next; | |
1053 | while (size) { | |
1054 | if (!next) { | |
1055 | /* this is a BUG */ | |
1056 | return -ENOMEM; | |
1057 | } | |
1058 | ||
1059 | copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE); | |
1060 | block = next->buf; | |
1061 | memcpy(block->data, from, copy); | |
1062 | from += copy; | |
1063 | size -= copy; | |
2c0f8ce1 | 1064 | block->token = token; |
e126ba97 EC |
1065 | next = next->next; |
1066 | } | |
1067 | ||
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size) | |
1072 | { | |
1073 | struct mlx5_cmd_prot_block *block; | |
1074 | struct mlx5_cmd_mailbox *next; | |
1075 | int copy; | |
1076 | ||
1077 | if (!to || !from) | |
1078 | return -ENOMEM; | |
1079 | ||
1080 | copy = min_t(int, size, sizeof(from->first.data)); | |
1081 | memcpy(to, from->first.data, copy); | |
1082 | size -= copy; | |
1083 | to += copy; | |
1084 | ||
1085 | next = from->next; | |
1086 | while (size) { | |
1087 | if (!next) { | |
1088 | /* this is a BUG */ | |
1089 | return -ENOMEM; | |
1090 | } | |
1091 | ||
1092 | copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE); | |
1093 | block = next->buf; | |
e126ba97 EC |
1094 | |
1095 | memcpy(to, block->data, copy); | |
1096 | to += copy; | |
1097 | size -= copy; | |
1098 | next = next->next; | |
1099 | } | |
1100 | ||
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev, | |
1105 | gfp_t flags) | |
1106 | { | |
1107 | struct mlx5_cmd_mailbox *mailbox; | |
1108 | ||
1109 | mailbox = kmalloc(sizeof(*mailbox), flags); | |
1110 | if (!mailbox) | |
1111 | return ERR_PTR(-ENOMEM); | |
1112 | ||
fec668d3 SJ |
1113 | mailbox->buf = pci_pool_zalloc(dev->cmd.pool, flags, |
1114 | &mailbox->dma); | |
e126ba97 EC |
1115 | if (!mailbox->buf) { |
1116 | mlx5_core_dbg(dev, "failed allocation\n"); | |
1117 | kfree(mailbox); | |
1118 | return ERR_PTR(-ENOMEM); | |
1119 | } | |
e126ba97 EC |
1120 | mailbox->next = NULL; |
1121 | ||
1122 | return mailbox; | |
1123 | } | |
1124 | ||
1125 | static void free_cmd_box(struct mlx5_core_dev *dev, | |
1126 | struct mlx5_cmd_mailbox *mailbox) | |
1127 | { | |
1128 | pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma); | |
1129 | kfree(mailbox); | |
1130 | } | |
1131 | ||
1132 | static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev, | |
2c0f8ce1 PB |
1133 | gfp_t flags, int size, |
1134 | u8 token) | |
e126ba97 EC |
1135 | { |
1136 | struct mlx5_cmd_mailbox *tmp, *head = NULL; | |
1137 | struct mlx5_cmd_prot_block *block; | |
1138 | struct mlx5_cmd_msg *msg; | |
1139 | int blen; | |
1140 | int err; | |
1141 | int n; | |
1142 | int i; | |
1143 | ||
746b5583 | 1144 | msg = kzalloc(sizeof(*msg), flags); |
e126ba97 EC |
1145 | if (!msg) |
1146 | return ERR_PTR(-ENOMEM); | |
1147 | ||
1148 | blen = size - min_t(int, sizeof(msg->first.data), size); | |
1149 | n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) / MLX5_CMD_DATA_BLOCK_SIZE; | |
1150 | ||
1151 | for (i = 0; i < n; i++) { | |
1152 | tmp = alloc_cmd_box(dev, flags); | |
1153 | if (IS_ERR(tmp)) { | |
1154 | mlx5_core_warn(dev, "failed allocating block\n"); | |
1155 | err = PTR_ERR(tmp); | |
1156 | goto err_alloc; | |
1157 | } | |
1158 | ||
1159 | block = tmp->buf; | |
1160 | tmp->next = head; | |
1161 | block->next = cpu_to_be64(tmp->next ? tmp->next->dma : 0); | |
1162 | block->block_num = cpu_to_be32(n - i - 1); | |
2c0f8ce1 | 1163 | block->token = token; |
e126ba97 EC |
1164 | head = tmp; |
1165 | } | |
1166 | msg->next = head; | |
1167 | msg->len = size; | |
1168 | return msg; | |
1169 | ||
1170 | err_alloc: | |
1171 | while (head) { | |
1172 | tmp = head->next; | |
1173 | free_cmd_box(dev, head); | |
1174 | head = tmp; | |
1175 | } | |
1176 | kfree(msg); | |
1177 | ||
1178 | return ERR_PTR(err); | |
1179 | } | |
1180 | ||
1181 | static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev, | |
e53eef63 | 1182 | struct mlx5_cmd_msg *msg) |
e126ba97 EC |
1183 | { |
1184 | struct mlx5_cmd_mailbox *head = msg->next; | |
1185 | struct mlx5_cmd_mailbox *next; | |
1186 | ||
1187 | while (head) { | |
1188 | next = head->next; | |
1189 | free_cmd_box(dev, head); | |
1190 | head = next; | |
1191 | } | |
1192 | kfree(msg); | |
1193 | } | |
1194 | ||
1195 | static ssize_t data_write(struct file *filp, const char __user *buf, | |
1196 | size_t count, loff_t *pos) | |
1197 | { | |
1198 | struct mlx5_core_dev *dev = filp->private_data; | |
1199 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1200 | void *ptr; | |
e126ba97 EC |
1201 | |
1202 | if (*pos != 0) | |
1203 | return -EINVAL; | |
1204 | ||
1205 | kfree(dbg->in_msg); | |
1206 | dbg->in_msg = NULL; | |
1207 | dbg->inlen = 0; | |
6f0b826d ME |
1208 | ptr = memdup_user(buf, count); |
1209 | if (IS_ERR(ptr)) | |
1210 | return PTR_ERR(ptr); | |
e126ba97 EC |
1211 | dbg->in_msg = ptr; |
1212 | dbg->inlen = count; | |
1213 | ||
1214 | *pos = count; | |
1215 | ||
1216 | return count; | |
e126ba97 EC |
1217 | } |
1218 | ||
1219 | static ssize_t data_read(struct file *filp, char __user *buf, size_t count, | |
1220 | loff_t *pos) | |
1221 | { | |
1222 | struct mlx5_core_dev *dev = filp->private_data; | |
1223 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1224 | int copy; | |
1225 | ||
1226 | if (*pos) | |
1227 | return 0; | |
1228 | ||
1229 | if (!dbg->out_msg) | |
1230 | return -ENOMEM; | |
1231 | ||
1232 | copy = min_t(int, count, dbg->outlen); | |
1233 | if (copy_to_user(buf, dbg->out_msg, copy)) | |
5e631a03 | 1234 | return -EFAULT; |
e126ba97 EC |
1235 | |
1236 | *pos += copy; | |
1237 | ||
1238 | return copy; | |
1239 | } | |
1240 | ||
1241 | static const struct file_operations dfops = { | |
1242 | .owner = THIS_MODULE, | |
1243 | .open = simple_open, | |
1244 | .write = data_write, | |
1245 | .read = data_read, | |
1246 | }; | |
1247 | ||
1248 | static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count, | |
1249 | loff_t *pos) | |
1250 | { | |
1251 | struct mlx5_core_dev *dev = filp->private_data; | |
1252 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1253 | char outlen[8]; | |
1254 | int err; | |
1255 | ||
1256 | if (*pos) | |
1257 | return 0; | |
1258 | ||
1259 | err = snprintf(outlen, sizeof(outlen), "%d", dbg->outlen); | |
1260 | if (err < 0) | |
1261 | return err; | |
1262 | ||
1263 | if (copy_to_user(buf, &outlen, err)) | |
5e631a03 | 1264 | return -EFAULT; |
e126ba97 EC |
1265 | |
1266 | *pos += err; | |
1267 | ||
1268 | return err; | |
1269 | } | |
1270 | ||
1271 | static ssize_t outlen_write(struct file *filp, const char __user *buf, | |
1272 | size_t count, loff_t *pos) | |
1273 | { | |
1274 | struct mlx5_core_dev *dev = filp->private_data; | |
1275 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1276 | char outlen_str[8]; | |
1277 | int outlen; | |
1278 | void *ptr; | |
1279 | int err; | |
1280 | ||
1281 | if (*pos != 0 || count > 6) | |
1282 | return -EINVAL; | |
1283 | ||
1284 | kfree(dbg->out_msg); | |
1285 | dbg->out_msg = NULL; | |
1286 | dbg->outlen = 0; | |
1287 | ||
1288 | if (copy_from_user(outlen_str, buf, count)) | |
5e631a03 | 1289 | return -EFAULT; |
e126ba97 EC |
1290 | |
1291 | outlen_str[7] = 0; | |
1292 | ||
1293 | err = sscanf(outlen_str, "%d", &outlen); | |
1294 | if (err < 0) | |
1295 | return err; | |
1296 | ||
1297 | ptr = kzalloc(outlen, GFP_KERNEL); | |
1298 | if (!ptr) | |
1299 | return -ENOMEM; | |
1300 | ||
1301 | dbg->out_msg = ptr; | |
1302 | dbg->outlen = outlen; | |
1303 | ||
1304 | *pos = count; | |
1305 | ||
1306 | return count; | |
1307 | } | |
1308 | ||
1309 | static const struct file_operations olfops = { | |
1310 | .owner = THIS_MODULE, | |
1311 | .open = simple_open, | |
1312 | .write = outlen_write, | |
1313 | .read = outlen_read, | |
1314 | }; | |
1315 | ||
1316 | static void set_wqname(struct mlx5_core_dev *dev) | |
1317 | { | |
1318 | struct mlx5_cmd *cmd = &dev->cmd; | |
1319 | ||
1320 | snprintf(cmd->wq_name, sizeof(cmd->wq_name), "mlx5_cmd_%s", | |
1321 | dev_name(&dev->pdev->dev)); | |
1322 | } | |
1323 | ||
1324 | static void clean_debug_files(struct mlx5_core_dev *dev) | |
1325 | { | |
1326 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1327 | ||
1328 | if (!mlx5_debugfs_root) | |
1329 | return; | |
1330 | ||
1331 | mlx5_cmdif_debugfs_cleanup(dev); | |
1332 | debugfs_remove_recursive(dbg->dbg_root); | |
1333 | } | |
1334 | ||
1335 | static int create_debugfs_files(struct mlx5_core_dev *dev) | |
1336 | { | |
1337 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; | |
1338 | int err = -ENOMEM; | |
1339 | ||
1340 | if (!mlx5_debugfs_root) | |
1341 | return 0; | |
1342 | ||
1343 | dbg->dbg_root = debugfs_create_dir("cmd", dev->priv.dbg_root); | |
1344 | if (!dbg->dbg_root) | |
1345 | return err; | |
1346 | ||
1347 | dbg->dbg_in = debugfs_create_file("in", 0400, dbg->dbg_root, | |
1348 | dev, &dfops); | |
1349 | if (!dbg->dbg_in) | |
1350 | goto err_dbg; | |
1351 | ||
1352 | dbg->dbg_out = debugfs_create_file("out", 0200, dbg->dbg_root, | |
1353 | dev, &dfops); | |
1354 | if (!dbg->dbg_out) | |
1355 | goto err_dbg; | |
1356 | ||
1357 | dbg->dbg_outlen = debugfs_create_file("out_len", 0600, dbg->dbg_root, | |
1358 | dev, &olfops); | |
1359 | if (!dbg->dbg_outlen) | |
1360 | goto err_dbg; | |
1361 | ||
1362 | dbg->dbg_status = debugfs_create_u8("status", 0600, dbg->dbg_root, | |
1363 | &dbg->status); | |
1364 | if (!dbg->dbg_status) | |
1365 | goto err_dbg; | |
1366 | ||
1367 | dbg->dbg_run = debugfs_create_file("run", 0200, dbg->dbg_root, dev, &fops); | |
1368 | if (!dbg->dbg_run) | |
1369 | goto err_dbg; | |
1370 | ||
1371 | mlx5_cmdif_debugfs_init(dev); | |
1372 | ||
1373 | return 0; | |
1374 | ||
1375 | err_dbg: | |
1376 | clean_debug_files(dev); | |
1377 | return err; | |
1378 | } | |
1379 | ||
9cba4ebc | 1380 | static void mlx5_cmd_change_mod(struct mlx5_core_dev *dev, int mode) |
e126ba97 EC |
1381 | { |
1382 | struct mlx5_cmd *cmd = &dev->cmd; | |
1383 | int i; | |
1384 | ||
1385 | for (i = 0; i < cmd->max_reg_cmds; i++) | |
1386 | down(&cmd->sem); | |
e126ba97 EC |
1387 | down(&cmd->pages_sem); |
1388 | ||
9cba4ebc | 1389 | cmd->mode = mode; |
e126ba97 EC |
1390 | |
1391 | up(&cmd->pages_sem); | |
1392 | for (i = 0; i < cmd->max_reg_cmds; i++) | |
1393 | up(&cmd->sem); | |
1394 | } | |
1395 | ||
9cba4ebc | 1396 | void mlx5_cmd_use_events(struct mlx5_core_dev *dev) |
e126ba97 | 1397 | { |
9cba4ebc MHY |
1398 | mlx5_cmd_change_mod(dev, CMD_MODE_EVENTS); |
1399 | } | |
e126ba97 | 1400 | |
9cba4ebc MHY |
1401 | void mlx5_cmd_use_polling(struct mlx5_core_dev *dev) |
1402 | { | |
1403 | mlx5_cmd_change_mod(dev, CMD_MODE_POLLING); | |
e126ba97 EC |
1404 | } |
1405 | ||
746b5583 EC |
1406 | static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg) |
1407 | { | |
1408 | unsigned long flags; | |
1409 | ||
0ac3ea70 MHY |
1410 | if (msg->parent) { |
1411 | spin_lock_irqsave(&msg->parent->lock, flags); | |
1412 | list_add_tail(&msg->list, &msg->parent->head); | |
1413 | spin_unlock_irqrestore(&msg->parent->lock, flags); | |
746b5583 EC |
1414 | } else { |
1415 | mlx5_free_cmd_msg(dev, msg); | |
1416 | } | |
1417 | } | |
1418 | ||
73dd3a48 | 1419 | void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec, bool forced) |
e126ba97 EC |
1420 | { |
1421 | struct mlx5_cmd *cmd = &dev->cmd; | |
1422 | struct mlx5_cmd_work_ent *ent; | |
1423 | mlx5_cmd_cbk_t callback; | |
1424 | void *context; | |
1425 | int err; | |
1426 | int i; | |
746b5583 EC |
1427 | s64 ds; |
1428 | struct mlx5_cmd_stats *stats; | |
1429 | unsigned long flags; | |
020446e0 | 1430 | unsigned long vector; |
e126ba97 | 1431 | |
020446e0 EC |
1432 | /* there can be at most 32 command queues */ |
1433 | vector = vec & 0xffffffff; | |
e126ba97 EC |
1434 | for (i = 0; i < (1 << cmd->log_sz); i++) { |
1435 | if (test_bit(i, &vector)) { | |
11940c87 DC |
1436 | struct semaphore *sem; |
1437 | ||
e126ba97 | 1438 | ent = cmd->ent_arr[i]; |
73dd3a48 MHY |
1439 | |
1440 | /* if we already completed the command, ignore it */ | |
1441 | if (!test_and_clear_bit(MLX5_CMD_ENT_STATE_PENDING_COMP, | |
1442 | &ent->state)) { | |
1443 | /* only real completion can free the cmd slot */ | |
1444 | if (!forced) { | |
1445 | mlx5_core_err(dev, "Command completion arrived after timeout (entry idx = %d).\n", | |
1446 | ent->idx); | |
1447 | free_ent(cmd, ent->idx); | |
06187080 | 1448 | free_cmd(ent); |
73dd3a48 MHY |
1449 | } |
1450 | continue; | |
1451 | } | |
1452 | ||
65ee6708 MHY |
1453 | if (ent->callback) |
1454 | cancel_delayed_work(&ent->cb_timeout_work); | |
11940c87 DC |
1455 | if (ent->page_queue) |
1456 | sem = &cmd->pages_sem; | |
1457 | else | |
1458 | sem = &cmd->sem; | |
14a70046 | 1459 | ent->ts2 = ktime_get_ns(); |
e126ba97 EC |
1460 | memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out)); |
1461 | dump_command(dev, ent, 0); | |
1462 | if (!ent->ret) { | |
1463 | if (!cmd->checksum_disabled) | |
1464 | ent->ret = verify_signature(ent); | |
1465 | else | |
1466 | ent->ret = 0; | |
020446e0 EC |
1467 | if (vec & MLX5_TRIGGERED_CMD_COMP) |
1468 | ent->status = MLX5_DRIVER_STATUS_ABORTED; | |
1469 | else | |
1470 | ent->status = ent->lay->status_own >> 1; | |
1471 | ||
e126ba97 EC |
1472 | mlx5_core_dbg(dev, "command completed. ret 0x%x, delivery status %s(0x%x)\n", |
1473 | ent->ret, deliv_status_to_str(ent->status), ent->status); | |
1474 | } | |
73dd3a48 MHY |
1475 | |
1476 | /* only real completion will free the entry slot */ | |
1477 | if (!forced) | |
1478 | free_ent(cmd, ent->idx); | |
020446e0 | 1479 | |
e126ba97 | 1480 | if (ent->callback) { |
14a70046 | 1481 | ds = ent->ts2 - ent->ts1; |
746b5583 EC |
1482 | if (ent->op < ARRAY_SIZE(cmd->stats)) { |
1483 | stats = &cmd->stats[ent->op]; | |
1484 | spin_lock_irqsave(&stats->lock, flags); | |
1485 | stats->sum += ds; | |
1486 | ++stats->n; | |
1487 | spin_unlock_irqrestore(&stats->lock, flags); | |
1488 | } | |
1489 | ||
e126ba97 EC |
1490 | callback = ent->callback; |
1491 | context = ent->context; | |
1492 | err = ent->ret; | |
ec22eb53 | 1493 | if (!err) { |
746b5583 EC |
1494 | err = mlx5_copy_from_msg(ent->uout, |
1495 | ent->out, | |
1496 | ent->uout_size); | |
1497 | ||
c4f287c4 SM |
1498 | err = err ? err : mlx5_cmd_check(dev, |
1499 | ent->in->first.data, | |
1500 | ent->uout); | |
ec22eb53 | 1501 | } |
746b5583 EC |
1502 | |
1503 | mlx5_free_cmd_msg(dev, ent->out); | |
1504 | free_msg(dev, ent->in); | |
1505 | ||
be87544d | 1506 | err = err ? err : ent->status; |
06187080 MS |
1507 | if (!forced) |
1508 | free_cmd(ent); | |
e126ba97 EC |
1509 | callback(err, context); |
1510 | } else { | |
1511 | complete(&ent->done); | |
1512 | } | |
11940c87 | 1513 | up(sem); |
e126ba97 EC |
1514 | } |
1515 | } | |
1516 | } | |
1517 | EXPORT_SYMBOL(mlx5_cmd_comp_handler); | |
1518 | ||
1519 | static int status_to_err(u8 status) | |
1520 | { | |
1521 | return status ? -1 : 0; /* TBD more meaningful codes */ | |
1522 | } | |
1523 | ||
746b5583 EC |
1524 | static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size, |
1525 | gfp_t gfp) | |
e126ba97 EC |
1526 | { |
1527 | struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM); | |
0ac3ea70 | 1528 | struct cmd_msg_cache *ch = NULL; |
e126ba97 | 1529 | struct mlx5_cmd *cmd = &dev->cmd; |
0ac3ea70 MHY |
1530 | int i; |
1531 | ||
1532 | if (in_size <= 16) | |
1533 | goto cache_miss; | |
1534 | ||
1535 | for (i = 0; i < MLX5_NUM_COMMAND_CACHES; i++) { | |
1536 | ch = &cmd->cache[i]; | |
1537 | if (in_size > ch->max_inbox_size) | |
1538 | continue; | |
1539 | spin_lock_irq(&ch->lock); | |
1540 | if (list_empty(&ch->head)) { | |
1541 | spin_unlock_irq(&ch->lock); | |
1542 | continue; | |
e126ba97 | 1543 | } |
0ac3ea70 MHY |
1544 | msg = list_entry(ch->head.next, typeof(*msg), list); |
1545 | /* For cached lists, we must explicitly state what is | |
1546 | * the real size | |
1547 | */ | |
1548 | msg->len = in_size; | |
1549 | list_del(&msg->list); | |
1550 | spin_unlock_irq(&ch->lock); | |
1551 | break; | |
e126ba97 EC |
1552 | } |
1553 | ||
0ac3ea70 MHY |
1554 | if (!IS_ERR(msg)) |
1555 | return msg; | |
e126ba97 | 1556 | |
0ac3ea70 MHY |
1557 | cache_miss: |
1558 | msg = mlx5_alloc_cmd_msg(dev, gfp, in_size, 0); | |
e126ba97 EC |
1559 | return msg; |
1560 | } | |
1561 | ||
c4f287c4 | 1562 | static int is_manage_pages(void *in) |
e126ba97 | 1563 | { |
c4f287c4 | 1564 | return MLX5_GET(mbox_in, in, opcode) == MLX5_CMD_OP_MANAGE_PAGES; |
e126ba97 EC |
1565 | } |
1566 | ||
746b5583 | 1567 | static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, |
4525abea MD |
1568 | int out_size, mlx5_cmd_cbk_t callback, void *context, |
1569 | bool force_polling) | |
e126ba97 EC |
1570 | { |
1571 | struct mlx5_cmd_msg *inb; | |
1572 | struct mlx5_cmd_msg *outb; | |
1573 | int pages_queue; | |
746b5583 | 1574 | gfp_t gfp; |
e126ba97 EC |
1575 | int err; |
1576 | u8 status = 0; | |
89d44f0a | 1577 | u32 drv_synd; |
2c0f8ce1 | 1578 | u8 token; |
89d44f0a MD |
1579 | |
1580 | if (pci_channel_offline(dev->pdev) || | |
1581 | dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { | |
c4f287c4 SM |
1582 | u16 opcode = MLX5_GET(mbox_in, in, opcode); |
1583 | ||
1584 | err = mlx5_internal_err_ret_value(dev, opcode, &drv_synd, &status); | |
1585 | MLX5_SET(mbox_out, out, status, status); | |
1586 | MLX5_SET(mbox_out, out, syndrome, drv_synd); | |
89d44f0a MD |
1587 | return err; |
1588 | } | |
e126ba97 EC |
1589 | |
1590 | pages_queue = is_manage_pages(in); | |
746b5583 | 1591 | gfp = callback ? GFP_ATOMIC : GFP_KERNEL; |
e126ba97 | 1592 | |
746b5583 | 1593 | inb = alloc_msg(dev, in_size, gfp); |
e126ba97 EC |
1594 | if (IS_ERR(inb)) { |
1595 | err = PTR_ERR(inb); | |
1596 | return err; | |
1597 | } | |
1598 | ||
2c0f8ce1 PB |
1599 | token = alloc_token(&dev->cmd); |
1600 | ||
1601 | err = mlx5_copy_to_msg(inb, in, in_size, token); | |
e126ba97 EC |
1602 | if (err) { |
1603 | mlx5_core_warn(dev, "err %d\n", err); | |
1604 | goto out_in; | |
1605 | } | |
1606 | ||
2c0f8ce1 | 1607 | outb = mlx5_alloc_cmd_msg(dev, gfp, out_size, token); |
e126ba97 EC |
1608 | if (IS_ERR(outb)) { |
1609 | err = PTR_ERR(outb); | |
1610 | goto out_in; | |
1611 | } | |
1612 | ||
746b5583 | 1613 | err = mlx5_cmd_invoke(dev, inb, outb, out, out_size, callback, context, |
4525abea | 1614 | pages_queue, &status, token, force_polling); |
e126ba97 EC |
1615 | if (err) |
1616 | goto out_out; | |
1617 | ||
1618 | mlx5_core_dbg(dev, "err %d, status %d\n", err, status); | |
1619 | if (status) { | |
1620 | err = status_to_err(status); | |
1621 | goto out_out; | |
1622 | } | |
1623 | ||
05e4ecd1 EC |
1624 | if (!callback) |
1625 | err = mlx5_copy_from_msg(out, outb, out_size); | |
e126ba97 EC |
1626 | |
1627 | out_out: | |
746b5583 EC |
1628 | if (!callback) |
1629 | mlx5_free_cmd_msg(dev, outb); | |
e126ba97 EC |
1630 | |
1631 | out_in: | |
746b5583 EC |
1632 | if (!callback) |
1633 | free_msg(dev, inb); | |
e126ba97 EC |
1634 | return err; |
1635 | } | |
746b5583 EC |
1636 | |
1637 | int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, | |
1638 | int out_size) | |
1639 | { | |
c4f287c4 SM |
1640 | int err; |
1641 | ||
4525abea | 1642 | err = cmd_exec(dev, in, in_size, out, out_size, NULL, NULL, false); |
c4f287c4 | 1643 | return err ? : mlx5_cmd_check(dev, in, out); |
746b5583 | 1644 | } |
e126ba97 EC |
1645 | EXPORT_SYMBOL(mlx5_cmd_exec); |
1646 | ||
746b5583 EC |
1647 | int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size, |
1648 | void *out, int out_size, mlx5_cmd_cbk_t callback, | |
1649 | void *context) | |
1650 | { | |
4525abea MD |
1651 | return cmd_exec(dev, in, in_size, out, out_size, callback, context, |
1652 | false); | |
746b5583 EC |
1653 | } |
1654 | EXPORT_SYMBOL(mlx5_cmd_exec_cb); | |
1655 | ||
4525abea MD |
1656 | int mlx5_cmd_exec_polling(struct mlx5_core_dev *dev, void *in, int in_size, |
1657 | void *out, int out_size) | |
1658 | { | |
1659 | int err; | |
1660 | ||
1661 | err = cmd_exec(dev, in, in_size, out, out_size, NULL, NULL, true); | |
1662 | ||
1663 | return err ? : mlx5_cmd_check(dev, in, out); | |
1664 | } | |
1665 | EXPORT_SYMBOL(mlx5_cmd_exec_polling); | |
1666 | ||
e126ba97 EC |
1667 | static void destroy_msg_cache(struct mlx5_core_dev *dev) |
1668 | { | |
0ac3ea70 | 1669 | struct cmd_msg_cache *ch; |
e126ba97 EC |
1670 | struct mlx5_cmd_msg *msg; |
1671 | struct mlx5_cmd_msg *n; | |
0ac3ea70 | 1672 | int i; |
e126ba97 | 1673 | |
0ac3ea70 MHY |
1674 | for (i = 0; i < MLX5_NUM_COMMAND_CACHES; i++) { |
1675 | ch = &dev->cmd.cache[i]; | |
1676 | list_for_each_entry_safe(msg, n, &ch->head, list) { | |
1677 | list_del(&msg->list); | |
1678 | mlx5_free_cmd_msg(dev, msg); | |
1679 | } | |
e126ba97 EC |
1680 | } |
1681 | } | |
1682 | ||
0ac3ea70 MHY |
1683 | static unsigned cmd_cache_num_ent[MLX5_NUM_COMMAND_CACHES] = { |
1684 | 512, 32, 16, 8, 2 | |
1685 | }; | |
1686 | ||
1687 | static unsigned cmd_cache_ent_size[MLX5_NUM_COMMAND_CACHES] = { | |
1688 | 16 + MLX5_CMD_DATA_BLOCK_SIZE, | |
1689 | 16 + MLX5_CMD_DATA_BLOCK_SIZE * 2, | |
1690 | 16 + MLX5_CMD_DATA_BLOCK_SIZE * 16, | |
1691 | 16 + MLX5_CMD_DATA_BLOCK_SIZE * 256, | |
1692 | 16 + MLX5_CMD_DATA_BLOCK_SIZE * 512, | |
1693 | }; | |
1694 | ||
1695 | static void create_msg_cache(struct mlx5_core_dev *dev) | |
e126ba97 EC |
1696 | { |
1697 | struct mlx5_cmd *cmd = &dev->cmd; | |
0ac3ea70 | 1698 | struct cmd_msg_cache *ch; |
e126ba97 | 1699 | struct mlx5_cmd_msg *msg; |
e126ba97 | 1700 | int i; |
0ac3ea70 MHY |
1701 | int k; |
1702 | ||
1703 | /* Initialize and fill the caches with initial entries */ | |
1704 | for (k = 0; k < MLX5_NUM_COMMAND_CACHES; k++) { | |
1705 | ch = &cmd->cache[k]; | |
1706 | spin_lock_init(&ch->lock); | |
1707 | INIT_LIST_HEAD(&ch->head); | |
1708 | ch->num_ent = cmd_cache_num_ent[k]; | |
1709 | ch->max_inbox_size = cmd_cache_ent_size[k]; | |
1710 | for (i = 0; i < ch->num_ent; i++) { | |
1711 | msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL | __GFP_NOWARN, | |
1712 | ch->max_inbox_size, 0); | |
1713 | if (IS_ERR(msg)) | |
1714 | break; | |
1715 | msg->parent = ch; | |
1716 | list_add_tail(&msg->list, &ch->head); | |
e126ba97 | 1717 | } |
e126ba97 | 1718 | } |
e126ba97 EC |
1719 | } |
1720 | ||
64599cca EC |
1721 | static int alloc_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) |
1722 | { | |
1723 | struct device *ddev = &dev->pdev->dev; | |
1724 | ||
1725 | cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE, | |
1726 | &cmd->alloc_dma, GFP_KERNEL); | |
1727 | if (!cmd->cmd_alloc_buf) | |
1728 | return -ENOMEM; | |
1729 | ||
1730 | /* make sure it is aligned to 4K */ | |
1731 | if (!((uintptr_t)cmd->cmd_alloc_buf & (MLX5_ADAPTER_PAGE_SIZE - 1))) { | |
1732 | cmd->cmd_buf = cmd->cmd_alloc_buf; | |
1733 | cmd->dma = cmd->alloc_dma; | |
1734 | cmd->alloc_size = MLX5_ADAPTER_PAGE_SIZE; | |
1735 | return 0; | |
1736 | } | |
1737 | ||
1738 | dma_free_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE, cmd->cmd_alloc_buf, | |
1739 | cmd->alloc_dma); | |
1740 | cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev, | |
1741 | 2 * MLX5_ADAPTER_PAGE_SIZE - 1, | |
1742 | &cmd->alloc_dma, GFP_KERNEL); | |
1743 | if (!cmd->cmd_alloc_buf) | |
1744 | return -ENOMEM; | |
1745 | ||
1746 | cmd->cmd_buf = PTR_ALIGN(cmd->cmd_alloc_buf, MLX5_ADAPTER_PAGE_SIZE); | |
1747 | cmd->dma = ALIGN(cmd->alloc_dma, MLX5_ADAPTER_PAGE_SIZE); | |
1748 | cmd->alloc_size = 2 * MLX5_ADAPTER_PAGE_SIZE - 1; | |
1749 | return 0; | |
1750 | } | |
1751 | ||
1752 | static void free_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) | |
1753 | { | |
1754 | struct device *ddev = &dev->pdev->dev; | |
1755 | ||
1756 | dma_free_coherent(ddev, cmd->alloc_size, cmd->cmd_alloc_buf, | |
1757 | cmd->alloc_dma); | |
1758 | } | |
1759 | ||
e126ba97 EC |
1760 | int mlx5_cmd_init(struct mlx5_core_dev *dev) |
1761 | { | |
1762 | int size = sizeof(struct mlx5_cmd_prot_block); | |
1763 | int align = roundup_pow_of_two(size); | |
1764 | struct mlx5_cmd *cmd = &dev->cmd; | |
1765 | u32 cmd_h, cmd_l; | |
1766 | u16 cmd_if_rev; | |
1767 | int err; | |
1768 | int i; | |
1769 | ||
a31208b1 | 1770 | memset(cmd, 0, sizeof(*cmd)); |
e126ba97 EC |
1771 | cmd_if_rev = cmdif_rev(dev); |
1772 | if (cmd_if_rev != CMD_IF_REV) { | |
1773 | dev_err(&dev->pdev->dev, | |
1774 | "Driver cmdif rev(%d) differs from firmware's(%d)\n", | |
1775 | CMD_IF_REV, cmd_if_rev); | |
1776 | return -EINVAL; | |
1777 | } | |
1778 | ||
1779 | cmd->pool = pci_pool_create("mlx5_cmd", dev->pdev, size, align, 0); | |
1780 | if (!cmd->pool) | |
1781 | return -ENOMEM; | |
1782 | ||
64599cca EC |
1783 | err = alloc_cmd_page(dev, cmd); |
1784 | if (err) | |
e126ba97 | 1785 | goto err_free_pool; |
e126ba97 EC |
1786 | |
1787 | cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff; | |
1788 | cmd->log_sz = cmd_l >> 4 & 0xf; | |
1789 | cmd->log_stride = cmd_l & 0xf; | |
1790 | if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) { | |
1791 | dev_err(&dev->pdev->dev, "firmware reports too many outstanding commands %d\n", | |
1792 | 1 << cmd->log_sz); | |
1793 | err = -EINVAL; | |
64599cca | 1794 | goto err_free_page; |
e126ba97 EC |
1795 | } |
1796 | ||
2d446d18 | 1797 | if (cmd->log_sz + cmd->log_stride > MLX5_ADAPTER_PAGE_SHIFT) { |
e126ba97 EC |
1798 | dev_err(&dev->pdev->dev, "command queue size overflow\n"); |
1799 | err = -EINVAL; | |
64599cca | 1800 | goto err_free_page; |
e126ba97 EC |
1801 | } |
1802 | ||
c1868b82 | 1803 | cmd->checksum_disabled = 1; |
e126ba97 EC |
1804 | cmd->max_reg_cmds = (1 << cmd->log_sz) - 1; |
1805 | cmd->bitmask = (1 << cmd->max_reg_cmds) - 1; | |
1806 | ||
1807 | cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16; | |
1808 | if (cmd->cmdif_rev > CMD_IF_REV) { | |
1809 | dev_err(&dev->pdev->dev, "driver does not support command interface version. driver %d, firmware %d\n", | |
1810 | CMD_IF_REV, cmd->cmdif_rev); | |
9eb78923 | 1811 | err = -EOPNOTSUPP; |
64599cca | 1812 | goto err_free_page; |
e126ba97 EC |
1813 | } |
1814 | ||
1815 | spin_lock_init(&cmd->alloc_lock); | |
1816 | spin_lock_init(&cmd->token_lock); | |
1817 | for (i = 0; i < ARRAY_SIZE(cmd->stats); i++) | |
1818 | spin_lock_init(&cmd->stats[i].lock); | |
1819 | ||
1820 | sema_init(&cmd->sem, cmd->max_reg_cmds); | |
1821 | sema_init(&cmd->pages_sem, 1); | |
1822 | ||
1823 | cmd_h = (u32)((u64)(cmd->dma) >> 32); | |
1824 | cmd_l = (u32)(cmd->dma); | |
1825 | if (cmd_l & 0xfff) { | |
1826 | dev_err(&dev->pdev->dev, "invalid command queue address\n"); | |
1827 | err = -ENOMEM; | |
64599cca | 1828 | goto err_free_page; |
e126ba97 EC |
1829 | } |
1830 | ||
1831 | iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h); | |
1832 | iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz); | |
1833 | ||
1834 | /* Make sure firmware sees the complete address before we proceed */ | |
1835 | wmb(); | |
1836 | ||
1837 | mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma)); | |
1838 | ||
1839 | cmd->mode = CMD_MODE_POLLING; | |
1840 | ||
0ac3ea70 | 1841 | create_msg_cache(dev); |
e126ba97 EC |
1842 | |
1843 | set_wqname(dev); | |
1844 | cmd->wq = create_singlethread_workqueue(cmd->wq_name); | |
1845 | if (!cmd->wq) { | |
1846 | dev_err(&dev->pdev->dev, "failed to create command workqueue\n"); | |
1847 | err = -ENOMEM; | |
1848 | goto err_cache; | |
1849 | } | |
1850 | ||
1851 | err = create_debugfs_files(dev); | |
1852 | if (err) { | |
1853 | err = -ENOMEM; | |
1854 | goto err_wq; | |
1855 | } | |
1856 | ||
1857 | return 0; | |
1858 | ||
1859 | err_wq: | |
1860 | destroy_workqueue(cmd->wq); | |
1861 | ||
1862 | err_cache: | |
1863 | destroy_msg_cache(dev); | |
1864 | ||
64599cca EC |
1865 | err_free_page: |
1866 | free_cmd_page(dev, cmd); | |
e126ba97 EC |
1867 | |
1868 | err_free_pool: | |
1869 | pci_pool_destroy(cmd->pool); | |
1870 | ||
1871 | return err; | |
1872 | } | |
1873 | EXPORT_SYMBOL(mlx5_cmd_init); | |
1874 | ||
1875 | void mlx5_cmd_cleanup(struct mlx5_core_dev *dev) | |
1876 | { | |
1877 | struct mlx5_cmd *cmd = &dev->cmd; | |
1878 | ||
1879 | clean_debug_files(dev); | |
1880 | destroy_workqueue(cmd->wq); | |
1881 | destroy_msg_cache(dev); | |
64599cca | 1882 | free_cmd_page(dev, cmd); |
e126ba97 EC |
1883 | pci_pool_destroy(cmd->pool); |
1884 | } | |
1885 | EXPORT_SYMBOL(mlx5_cmd_cleanup); |