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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. | |
51a379d0 | 3 | * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. |
225c7b1f RD |
4 | * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved. |
5 | * | |
6 | * This software is available to you under a choice of one of two | |
7 | * licenses. You may choose to be licensed under the terms of the GNU | |
8 | * General Public License (GPL) Version 2, available from the file | |
9 | * COPYING in the main directory of this source tree, or the | |
10 | * OpenIB.org BSD license below: | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or | |
13 | * without modification, are permitted provided that the following | |
14 | * conditions are met: | |
15 | * | |
16 | * - Redistributions of source code must retain the above | |
17 | * copyright notice, this list of conditions and the following | |
18 | * disclaimer. | |
19 | * | |
20 | * - Redistributions in binary form must reproduce the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer in the documentation and/or other materials | |
23 | * provided with the distribution. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
32 | * SOFTWARE. | |
33 | */ | |
34 | ||
35 | #include <linux/sched.h> | |
5a0e3ad6 | 36 | #include <linux/slab.h> |
ee40fa06 | 37 | #include <linux/export.h> |
225c7b1f RD |
38 | #include <linux/pci.h> |
39 | #include <linux/errno.h> | |
40 | ||
41 | #include <linux/mlx4/cmd.h> | |
e8f081aa | 42 | #include <linux/semaphore.h> |
225c7b1f RD |
43 | |
44 | #include <asm/io.h> | |
45 | ||
46 | #include "mlx4.h" | |
e8f081aa | 47 | #include "fw.h" |
225c7b1f RD |
48 | |
49 | #define CMD_POLL_TOKEN 0xffff | |
e8f081aa YP |
50 | #define INBOX_MASK 0xffffffffffffff00ULL |
51 | ||
52 | #define CMD_CHAN_VER 1 | |
53 | #define CMD_CHAN_IF_REV 1 | |
225c7b1f RD |
54 | |
55 | enum { | |
56 | /* command completed successfully: */ | |
57 | CMD_STAT_OK = 0x00, | |
58 | /* Internal error (such as a bus error) occurred while processing command: */ | |
59 | CMD_STAT_INTERNAL_ERR = 0x01, | |
60 | /* Operation/command not supported or opcode modifier not supported: */ | |
61 | CMD_STAT_BAD_OP = 0x02, | |
62 | /* Parameter not supported or parameter out of range: */ | |
63 | CMD_STAT_BAD_PARAM = 0x03, | |
64 | /* System not enabled or bad system state: */ | |
65 | CMD_STAT_BAD_SYS_STATE = 0x04, | |
66 | /* Attempt to access reserved or unallocaterd resource: */ | |
67 | CMD_STAT_BAD_RESOURCE = 0x05, | |
68 | /* Requested resource is currently executing a command, or is otherwise busy: */ | |
69 | CMD_STAT_RESOURCE_BUSY = 0x06, | |
70 | /* Required capability exceeds device limits: */ | |
71 | CMD_STAT_EXCEED_LIM = 0x08, | |
72 | /* Resource is not in the appropriate state or ownership: */ | |
73 | CMD_STAT_BAD_RES_STATE = 0x09, | |
74 | /* Index out of range: */ | |
75 | CMD_STAT_BAD_INDEX = 0x0a, | |
76 | /* FW image corrupted: */ | |
77 | CMD_STAT_BAD_NVMEM = 0x0b, | |
899698da JM |
78 | /* Error in ICM mapping (e.g. not enough auxiliary ICM pages to execute command): */ |
79 | CMD_STAT_ICM_ERROR = 0x0c, | |
225c7b1f RD |
80 | /* Attempt to modify a QP/EE which is not in the presumed state: */ |
81 | CMD_STAT_BAD_QP_STATE = 0x10, | |
82 | /* Bad segment parameters (Address/Size): */ | |
83 | CMD_STAT_BAD_SEG_PARAM = 0x20, | |
84 | /* Memory Region has Memory Windows bound to: */ | |
85 | CMD_STAT_REG_BOUND = 0x21, | |
86 | /* HCA local attached memory not present: */ | |
87 | CMD_STAT_LAM_NOT_PRE = 0x22, | |
88 | /* Bad management packet (silently discarded): */ | |
89 | CMD_STAT_BAD_PKT = 0x30, | |
90 | /* More outstanding CQEs in CQ than new CQ size: */ | |
cc4ac2e7 YP |
91 | CMD_STAT_BAD_SIZE = 0x40, |
92 | /* Multi Function device support required: */ | |
93 | CMD_STAT_MULTI_FUNC_REQ = 0x50, | |
225c7b1f RD |
94 | }; |
95 | ||
96 | enum { | |
97 | HCR_IN_PARAM_OFFSET = 0x00, | |
98 | HCR_IN_MODIFIER_OFFSET = 0x08, | |
99 | HCR_OUT_PARAM_OFFSET = 0x0c, | |
100 | HCR_TOKEN_OFFSET = 0x14, | |
101 | HCR_STATUS_OFFSET = 0x18, | |
102 | ||
103 | HCR_OPMOD_SHIFT = 12, | |
104 | HCR_T_BIT = 21, | |
105 | HCR_E_BIT = 22, | |
106 | HCR_GO_BIT = 23 | |
107 | }; | |
108 | ||
109 | enum { | |
36ce10d3 | 110 | GO_BIT_TIMEOUT_MSECS = 10000 |
225c7b1f RD |
111 | }; |
112 | ||
113 | struct mlx4_cmd_context { | |
114 | struct completion done; | |
115 | int result; | |
116 | int next; | |
117 | u64 out_param; | |
118 | u16 token; | |
e8f081aa | 119 | u8 fw_status; |
225c7b1f RD |
120 | }; |
121 | ||
e8f081aa YP |
122 | static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave, |
123 | struct mlx4_vhcr_cmd *in_vhcr); | |
124 | ||
ca281211 RD |
125 | static int mlx4_status_to_errno(u8 status) |
126 | { | |
225c7b1f RD |
127 | static const int trans_table[] = { |
128 | [CMD_STAT_INTERNAL_ERR] = -EIO, | |
129 | [CMD_STAT_BAD_OP] = -EPERM, | |
130 | [CMD_STAT_BAD_PARAM] = -EINVAL, | |
131 | [CMD_STAT_BAD_SYS_STATE] = -ENXIO, | |
132 | [CMD_STAT_BAD_RESOURCE] = -EBADF, | |
133 | [CMD_STAT_RESOURCE_BUSY] = -EBUSY, | |
134 | [CMD_STAT_EXCEED_LIM] = -ENOMEM, | |
135 | [CMD_STAT_BAD_RES_STATE] = -EBADF, | |
136 | [CMD_STAT_BAD_INDEX] = -EBADF, | |
137 | [CMD_STAT_BAD_NVMEM] = -EFAULT, | |
899698da | 138 | [CMD_STAT_ICM_ERROR] = -ENFILE, |
225c7b1f RD |
139 | [CMD_STAT_BAD_QP_STATE] = -EINVAL, |
140 | [CMD_STAT_BAD_SEG_PARAM] = -EFAULT, | |
141 | [CMD_STAT_REG_BOUND] = -EBUSY, | |
142 | [CMD_STAT_LAM_NOT_PRE] = -EAGAIN, | |
143 | [CMD_STAT_BAD_PKT] = -EINVAL, | |
144 | [CMD_STAT_BAD_SIZE] = -ENOMEM, | |
cc4ac2e7 | 145 | [CMD_STAT_MULTI_FUNC_REQ] = -EACCES, |
225c7b1f RD |
146 | }; |
147 | ||
148 | if (status >= ARRAY_SIZE(trans_table) || | |
149 | (status != CMD_STAT_OK && trans_table[status] == 0)) | |
150 | return -EIO; | |
151 | ||
152 | return trans_table[status]; | |
153 | } | |
154 | ||
72be84f1 YP |
155 | static u8 mlx4_errno_to_status(int errno) |
156 | { | |
157 | switch (errno) { | |
158 | case -EPERM: | |
159 | return CMD_STAT_BAD_OP; | |
160 | case -EINVAL: | |
161 | return CMD_STAT_BAD_PARAM; | |
162 | case -ENXIO: | |
163 | return CMD_STAT_BAD_SYS_STATE; | |
164 | case -EBUSY: | |
165 | return CMD_STAT_RESOURCE_BUSY; | |
166 | case -ENOMEM: | |
167 | return CMD_STAT_EXCEED_LIM; | |
168 | case -ENFILE: | |
169 | return CMD_STAT_ICM_ERROR; | |
170 | default: | |
171 | return CMD_STAT_INTERNAL_ERR; | |
172 | } | |
173 | } | |
174 | ||
e8f081aa YP |
175 | static int comm_pending(struct mlx4_dev *dev) |
176 | { | |
177 | struct mlx4_priv *priv = mlx4_priv(dev); | |
178 | u32 status = readl(&priv->mfunc.comm->slave_read); | |
179 | ||
180 | return (swab32(status) >> 31) != priv->cmd.comm_toggle; | |
181 | } | |
182 | ||
183 | static void mlx4_comm_cmd_post(struct mlx4_dev *dev, u8 cmd, u16 param) | |
184 | { | |
185 | struct mlx4_priv *priv = mlx4_priv(dev); | |
186 | u32 val; | |
187 | ||
188 | priv->cmd.comm_toggle ^= 1; | |
189 | val = param | (cmd << 16) | (priv->cmd.comm_toggle << 31); | |
190 | __raw_writel((__force u32) cpu_to_be32(val), | |
191 | &priv->mfunc.comm->slave_write); | |
192 | mmiowb(); | |
193 | } | |
194 | ||
e8f081aa YP |
195 | static int mlx4_comm_cmd_poll(struct mlx4_dev *dev, u8 cmd, u16 param, |
196 | unsigned long timeout) | |
197 | { | |
198 | struct mlx4_priv *priv = mlx4_priv(dev); | |
199 | unsigned long end; | |
200 | int err = 0; | |
201 | int ret_from_pending = 0; | |
202 | ||
203 | /* First, verify that the master reports correct status */ | |
204 | if (comm_pending(dev)) { | |
205 | mlx4_warn(dev, "Communication channel is not idle." | |
206 | "my toggle is %d (cmd:0x%x)\n", | |
207 | priv->cmd.comm_toggle, cmd); | |
208 | return -EAGAIN; | |
209 | } | |
210 | ||
211 | /* Write command */ | |
212 | down(&priv->cmd.poll_sem); | |
213 | mlx4_comm_cmd_post(dev, cmd, param); | |
214 | ||
215 | end = msecs_to_jiffies(timeout) + jiffies; | |
216 | while (comm_pending(dev) && time_before(jiffies, end)) | |
217 | cond_resched(); | |
218 | ret_from_pending = comm_pending(dev); | |
219 | if (ret_from_pending) { | |
220 | /* check if the slave is trying to boot in the middle of | |
221 | * FLR process. The only non-zero result in the RESET command | |
222 | * is MLX4_DELAY_RESET_SLAVE*/ | |
223 | if ((MLX4_COMM_CMD_RESET == cmd)) { | |
224 | mlx4_warn(dev, "Got slave FLRed from Communication" | |
225 | " channel (ret:0x%x)\n", ret_from_pending); | |
226 | err = MLX4_DELAY_RESET_SLAVE; | |
227 | } else { | |
228 | mlx4_warn(dev, "Communication channel timed out\n"); | |
229 | err = -ETIMEDOUT; | |
230 | } | |
231 | } | |
232 | ||
233 | up(&priv->cmd.poll_sem); | |
234 | return err; | |
235 | } | |
236 | ||
237 | static int mlx4_comm_cmd_wait(struct mlx4_dev *dev, u8 op, | |
238 | u16 param, unsigned long timeout) | |
239 | { | |
240 | struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd; | |
241 | struct mlx4_cmd_context *context; | |
58a3de05 | 242 | unsigned long end; |
e8f081aa YP |
243 | int err = 0; |
244 | ||
245 | down(&cmd->event_sem); | |
246 | ||
247 | spin_lock(&cmd->context_lock); | |
248 | BUG_ON(cmd->free_head < 0); | |
249 | context = &cmd->context[cmd->free_head]; | |
250 | context->token += cmd->token_mask + 1; | |
251 | cmd->free_head = context->next; | |
252 | spin_unlock(&cmd->context_lock); | |
253 | ||
254 | init_completion(&context->done); | |
255 | ||
256 | mlx4_comm_cmd_post(dev, op, param); | |
257 | ||
258 | if (!wait_for_completion_timeout(&context->done, | |
259 | msecs_to_jiffies(timeout))) { | |
260 | err = -EBUSY; | |
261 | goto out; | |
262 | } | |
263 | ||
264 | err = context->result; | |
265 | if (err && context->fw_status != CMD_STAT_MULTI_FUNC_REQ) { | |
266 | mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n", | |
267 | op, context->fw_status); | |
268 | goto out; | |
269 | } | |
270 | ||
271 | out: | |
58a3de05 EE |
272 | /* wait for comm channel ready |
273 | * this is necessary for prevention the race | |
274 | * when switching between event to polling mode | |
275 | */ | |
276 | end = msecs_to_jiffies(timeout) + jiffies; | |
277 | while (comm_pending(dev) && time_before(jiffies, end)) | |
278 | cond_resched(); | |
279 | ||
e8f081aa YP |
280 | spin_lock(&cmd->context_lock); |
281 | context->next = cmd->free_head; | |
282 | cmd->free_head = context - cmd->context; | |
283 | spin_unlock(&cmd->context_lock); | |
284 | ||
285 | up(&cmd->event_sem); | |
286 | return err; | |
287 | } | |
288 | ||
ab9c17a0 | 289 | int mlx4_comm_cmd(struct mlx4_dev *dev, u8 cmd, u16 param, |
e8f081aa YP |
290 | unsigned long timeout) |
291 | { | |
292 | if (mlx4_priv(dev)->cmd.use_events) | |
293 | return mlx4_comm_cmd_wait(dev, cmd, param, timeout); | |
294 | return mlx4_comm_cmd_poll(dev, cmd, param, timeout); | |
295 | } | |
296 | ||
225c7b1f RD |
297 | static int cmd_pending(struct mlx4_dev *dev) |
298 | { | |
299 | u32 status = readl(mlx4_priv(dev)->cmd.hcr + HCR_STATUS_OFFSET); | |
300 | ||
301 | return (status & swab32(1 << HCR_GO_BIT)) || | |
302 | (mlx4_priv(dev)->cmd.toggle == | |
303 | !!(status & swab32(1 << HCR_T_BIT))); | |
304 | } | |
305 | ||
306 | static int mlx4_cmd_post(struct mlx4_dev *dev, u64 in_param, u64 out_param, | |
307 | u32 in_modifier, u8 op_modifier, u16 op, u16 token, | |
308 | int event) | |
309 | { | |
310 | struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd; | |
311 | u32 __iomem *hcr = cmd->hcr; | |
312 | int ret = -EAGAIN; | |
313 | unsigned long end; | |
314 | ||
315 | mutex_lock(&cmd->hcr_mutex); | |
316 | ||
317 | end = jiffies; | |
318 | if (event) | |
36ce10d3 | 319 | end += msecs_to_jiffies(GO_BIT_TIMEOUT_MSECS); |
225c7b1f RD |
320 | |
321 | while (cmd_pending(dev)) { | |
e8f081aa YP |
322 | if (time_after_eq(jiffies, end)) { |
323 | mlx4_err(dev, "%s:cmd_pending failed\n", __func__); | |
225c7b1f | 324 | goto out; |
e8f081aa | 325 | } |
225c7b1f RD |
326 | cond_resched(); |
327 | } | |
328 | ||
329 | /* | |
330 | * We use writel (instead of something like memcpy_toio) | |
331 | * because writes of less than 32 bits to the HCR don't work | |
332 | * (and some architectures such as ia64 implement memcpy_toio | |
333 | * in terms of writeb). | |
334 | */ | |
335 | __raw_writel((__force u32) cpu_to_be32(in_param >> 32), hcr + 0); | |
336 | __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful), hcr + 1); | |
337 | __raw_writel((__force u32) cpu_to_be32(in_modifier), hcr + 2); | |
338 | __raw_writel((__force u32) cpu_to_be32(out_param >> 32), hcr + 3); | |
339 | __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), hcr + 4); | |
340 | __raw_writel((__force u32) cpu_to_be32(token << 16), hcr + 5); | |
341 | ||
342 | /* __raw_writel may not order writes. */ | |
343 | wmb(); | |
344 | ||
345 | __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT) | | |
346 | (cmd->toggle << HCR_T_BIT) | | |
347 | (event ? (1 << HCR_E_BIT) : 0) | | |
348 | (op_modifier << HCR_OPMOD_SHIFT) | | |
e8f081aa | 349 | op), hcr + 6); |
2e61c646 RD |
350 | |
351 | /* | |
352 | * Make sure that our HCR writes don't get mixed in with | |
353 | * writes from another CPU starting a FW command. | |
354 | */ | |
355 | mmiowb(); | |
356 | ||
225c7b1f RD |
357 | cmd->toggle = cmd->toggle ^ 1; |
358 | ||
359 | ret = 0; | |
360 | ||
361 | out: | |
362 | mutex_unlock(&cmd->hcr_mutex); | |
363 | return ret; | |
364 | } | |
365 | ||
e8f081aa YP |
366 | static int mlx4_slave_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param, |
367 | int out_is_imm, u32 in_modifier, u8 op_modifier, | |
368 | u16 op, unsigned long timeout) | |
369 | { | |
370 | struct mlx4_priv *priv = mlx4_priv(dev); | |
371 | struct mlx4_vhcr_cmd *vhcr = priv->mfunc.vhcr; | |
372 | int ret; | |
373 | ||
374 | down(&priv->cmd.slave_sem); | |
375 | vhcr->in_param = cpu_to_be64(in_param); | |
376 | vhcr->out_param = out_param ? cpu_to_be64(*out_param) : 0; | |
377 | vhcr->in_modifier = cpu_to_be32(in_modifier); | |
378 | vhcr->opcode = cpu_to_be16((((u16) op_modifier) << 12) | (op & 0xfff)); | |
379 | vhcr->token = cpu_to_be16(CMD_POLL_TOKEN); | |
380 | vhcr->status = 0; | |
381 | vhcr->flags = !!(priv->cmd.use_events) << 6; | |
382 | if (mlx4_is_master(dev)) { | |
383 | ret = mlx4_master_process_vhcr(dev, dev->caps.function, vhcr); | |
384 | if (!ret) { | |
385 | if (out_is_imm) { | |
386 | if (out_param) | |
387 | *out_param = | |
388 | be64_to_cpu(vhcr->out_param); | |
389 | else { | |
390 | mlx4_err(dev, "response expected while" | |
391 | "output mailbox is NULL for " | |
392 | "command 0x%x\n", op); | |
72be84f1 | 393 | vhcr->status = CMD_STAT_BAD_PARAM; |
e8f081aa YP |
394 | } |
395 | } | |
72be84f1 | 396 | ret = mlx4_status_to_errno(vhcr->status); |
e8f081aa YP |
397 | } |
398 | } else { | |
399 | ret = mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_POST, 0, | |
400 | MLX4_COMM_TIME + timeout); | |
401 | if (!ret) { | |
402 | if (out_is_imm) { | |
403 | if (out_param) | |
404 | *out_param = | |
405 | be64_to_cpu(vhcr->out_param); | |
406 | else { | |
407 | mlx4_err(dev, "response expected while" | |
408 | "output mailbox is NULL for " | |
409 | "command 0x%x\n", op); | |
72be84f1 | 410 | vhcr->status = CMD_STAT_BAD_PARAM; |
e8f081aa YP |
411 | } |
412 | } | |
72be84f1 | 413 | ret = mlx4_status_to_errno(vhcr->status); |
e8f081aa YP |
414 | } else |
415 | mlx4_err(dev, "failed execution of VHCR_POST command" | |
416 | "opcode 0x%x\n", op); | |
417 | } | |
418 | up(&priv->cmd.slave_sem); | |
419 | return ret; | |
420 | } | |
421 | ||
225c7b1f RD |
422 | static int mlx4_cmd_poll(struct mlx4_dev *dev, u64 in_param, u64 *out_param, |
423 | int out_is_imm, u32 in_modifier, u8 op_modifier, | |
424 | u16 op, unsigned long timeout) | |
425 | { | |
426 | struct mlx4_priv *priv = mlx4_priv(dev); | |
427 | void __iomem *hcr = priv->cmd.hcr; | |
428 | int err = 0; | |
429 | unsigned long end; | |
e8f081aa | 430 | u32 stat; |
225c7b1f RD |
431 | |
432 | down(&priv->cmd.poll_sem); | |
433 | ||
434 | err = mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0, | |
435 | in_modifier, op_modifier, op, CMD_POLL_TOKEN, 0); | |
436 | if (err) | |
437 | goto out; | |
438 | ||
439 | end = msecs_to_jiffies(timeout) + jiffies; | |
440 | while (cmd_pending(dev) && time_before(jiffies, end)) | |
441 | cond_resched(); | |
442 | ||
443 | if (cmd_pending(dev)) { | |
444 | err = -ETIMEDOUT; | |
445 | goto out; | |
446 | } | |
447 | ||
448 | if (out_is_imm) | |
449 | *out_param = | |
450 | (u64) be32_to_cpu((__force __be32) | |
451 | __raw_readl(hcr + HCR_OUT_PARAM_OFFSET)) << 32 | | |
452 | (u64) be32_to_cpu((__force __be32) | |
453 | __raw_readl(hcr + HCR_OUT_PARAM_OFFSET + 4)); | |
e8f081aa YP |
454 | stat = be32_to_cpu((__force __be32) |
455 | __raw_readl(hcr + HCR_STATUS_OFFSET)) >> 24; | |
456 | err = mlx4_status_to_errno(stat); | |
457 | if (err) | |
458 | mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n", | |
459 | op, stat); | |
225c7b1f RD |
460 | |
461 | out: | |
462 | up(&priv->cmd.poll_sem); | |
463 | return err; | |
464 | } | |
465 | ||
466 | void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param) | |
467 | { | |
468 | struct mlx4_priv *priv = mlx4_priv(dev); | |
469 | struct mlx4_cmd_context *context = | |
470 | &priv->cmd.context[token & priv->cmd.token_mask]; | |
471 | ||
472 | /* previously timed out command completing at long last */ | |
473 | if (token != context->token) | |
474 | return; | |
475 | ||
e8f081aa | 476 | context->fw_status = status; |
225c7b1f RD |
477 | context->result = mlx4_status_to_errno(status); |
478 | context->out_param = out_param; | |
479 | ||
225c7b1f RD |
480 | complete(&context->done); |
481 | } | |
482 | ||
483 | static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param, | |
484 | int out_is_imm, u32 in_modifier, u8 op_modifier, | |
485 | u16 op, unsigned long timeout) | |
486 | { | |
487 | struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd; | |
488 | struct mlx4_cmd_context *context; | |
489 | int err = 0; | |
490 | ||
491 | down(&cmd->event_sem); | |
492 | ||
493 | spin_lock(&cmd->context_lock); | |
494 | BUG_ON(cmd->free_head < 0); | |
495 | context = &cmd->context[cmd->free_head]; | |
0981582d | 496 | context->token += cmd->token_mask + 1; |
225c7b1f RD |
497 | cmd->free_head = context->next; |
498 | spin_unlock(&cmd->context_lock); | |
499 | ||
500 | init_completion(&context->done); | |
501 | ||
502 | mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0, | |
503 | in_modifier, op_modifier, op, context->token, 1); | |
504 | ||
e8f081aa YP |
505 | if (!wait_for_completion_timeout(&context->done, |
506 | msecs_to_jiffies(timeout))) { | |
225c7b1f RD |
507 | err = -EBUSY; |
508 | goto out; | |
509 | } | |
510 | ||
511 | err = context->result; | |
e8f081aa YP |
512 | if (err) { |
513 | mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n", | |
514 | op, context->fw_status); | |
225c7b1f | 515 | goto out; |
e8f081aa | 516 | } |
225c7b1f RD |
517 | |
518 | if (out_is_imm) | |
519 | *out_param = context->out_param; | |
520 | ||
521 | out: | |
522 | spin_lock(&cmd->context_lock); | |
523 | context->next = cmd->free_head; | |
524 | cmd->free_head = context - cmd->context; | |
525 | spin_unlock(&cmd->context_lock); | |
526 | ||
527 | up(&cmd->event_sem); | |
528 | return err; | |
529 | } | |
530 | ||
531 | int __mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param, | |
532 | int out_is_imm, u32 in_modifier, u8 op_modifier, | |
f9baff50 | 533 | u16 op, unsigned long timeout, int native) |
225c7b1f | 534 | { |
e8f081aa YP |
535 | if (!mlx4_is_mfunc(dev) || (native && mlx4_is_master(dev))) { |
536 | if (mlx4_priv(dev)->cmd.use_events) | |
537 | return mlx4_cmd_wait(dev, in_param, out_param, | |
538 | out_is_imm, in_modifier, | |
539 | op_modifier, op, timeout); | |
540 | else | |
541 | return mlx4_cmd_poll(dev, in_param, out_param, | |
542 | out_is_imm, in_modifier, | |
543 | op_modifier, op, timeout); | |
544 | } | |
545 | return mlx4_slave_cmd(dev, in_param, out_param, out_is_imm, | |
546 | in_modifier, op_modifier, op, timeout); | |
225c7b1f RD |
547 | } |
548 | EXPORT_SYMBOL_GPL(__mlx4_cmd); | |
549 | ||
e8f081aa YP |
550 | |
551 | static int mlx4_ARM_COMM_CHANNEL(struct mlx4_dev *dev) | |
552 | { | |
553 | return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_ARM_COMM_CHANNEL, | |
554 | MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); | |
555 | } | |
556 | ||
557 | static int mlx4_ACCESS_MEM(struct mlx4_dev *dev, u64 master_addr, | |
558 | int slave, u64 slave_addr, | |
559 | int size, int is_read) | |
560 | { | |
561 | u64 in_param; | |
562 | u64 out_param; | |
563 | ||
564 | if ((slave_addr & 0xfff) | (master_addr & 0xfff) | | |
565 | (slave & ~0x7f) | (size & 0xff)) { | |
566 | mlx4_err(dev, "Bad access mem params - slave_addr:0x%llx " | |
567 | "master_addr:0x%llx slave_id:%d size:%d\n", | |
568 | slave_addr, master_addr, slave, size); | |
569 | return -EINVAL; | |
570 | } | |
571 | ||
572 | if (is_read) { | |
573 | in_param = (u64) slave | slave_addr; | |
574 | out_param = (u64) dev->caps.function | master_addr; | |
575 | } else { | |
576 | in_param = (u64) dev->caps.function | master_addr; | |
577 | out_param = (u64) slave | slave_addr; | |
578 | } | |
579 | ||
580 | return mlx4_cmd_imm(dev, in_param, &out_param, size, 0, | |
581 | MLX4_CMD_ACCESS_MEM, | |
582 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); | |
583 | } | |
584 | ||
585 | int mlx4_DMA_wrapper(struct mlx4_dev *dev, int slave, | |
586 | struct mlx4_vhcr *vhcr, | |
587 | struct mlx4_cmd_mailbox *inbox, | |
588 | struct mlx4_cmd_mailbox *outbox, | |
589 | struct mlx4_cmd_info *cmd) | |
590 | { | |
591 | u64 in_param; | |
592 | u64 out_param; | |
593 | int err; | |
594 | ||
595 | in_param = cmd->has_inbox ? (u64) inbox->dma : vhcr->in_param; | |
596 | out_param = cmd->has_outbox ? (u64) outbox->dma : vhcr->out_param; | |
597 | if (cmd->encode_slave_id) { | |
598 | in_param &= 0xffffffffffffff00ll; | |
599 | in_param |= slave; | |
600 | } | |
601 | ||
602 | err = __mlx4_cmd(dev, in_param, &out_param, cmd->out_is_imm, | |
603 | vhcr->in_modifier, vhcr->op_modifier, vhcr->op, | |
604 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); | |
605 | ||
606 | if (cmd->out_is_imm) | |
607 | vhcr->out_param = out_param; | |
608 | ||
609 | return err; | |
610 | } | |
611 | ||
612 | static struct mlx4_cmd_info cmd_info[] = { | |
613 | { | |
614 | .opcode = MLX4_CMD_QUERY_FW, | |
615 | .has_inbox = false, | |
616 | .has_outbox = true, | |
617 | .out_is_imm = false, | |
618 | .encode_slave_id = false, | |
619 | .verify = NULL, | |
620 | .wrapper = NULL | |
621 | }, | |
622 | { | |
623 | .opcode = MLX4_CMD_QUERY_HCA, | |
624 | .has_inbox = false, | |
625 | .has_outbox = true, | |
626 | .out_is_imm = false, | |
627 | .encode_slave_id = false, | |
628 | .verify = NULL, | |
629 | .wrapper = NULL | |
630 | }, | |
631 | { | |
632 | .opcode = MLX4_CMD_QUERY_DEV_CAP, | |
633 | .has_inbox = false, | |
634 | .has_outbox = true, | |
635 | .out_is_imm = false, | |
636 | .encode_slave_id = false, | |
637 | .verify = NULL, | |
638 | .wrapper = NULL | |
639 | }, | |
c82e9aa0 EC |
640 | { |
641 | .opcode = MLX4_CMD_QUERY_FUNC_CAP, | |
642 | .has_inbox = false, | |
643 | .has_outbox = true, | |
644 | .out_is_imm = false, | |
645 | .encode_slave_id = false, | |
646 | .verify = NULL, | |
647 | .wrapper = mlx4_QUERY_FUNC_CAP_wrapper | |
648 | }, | |
649 | { | |
650 | .opcode = MLX4_CMD_QUERY_ADAPTER, | |
651 | .has_inbox = false, | |
652 | .has_outbox = true, | |
653 | .out_is_imm = false, | |
654 | .encode_slave_id = false, | |
655 | .verify = NULL, | |
656 | .wrapper = NULL | |
657 | }, | |
658 | { | |
659 | .opcode = MLX4_CMD_INIT_PORT, | |
660 | .has_inbox = false, | |
661 | .has_outbox = false, | |
662 | .out_is_imm = false, | |
663 | .encode_slave_id = false, | |
664 | .verify = NULL, | |
665 | .wrapper = mlx4_INIT_PORT_wrapper | |
666 | }, | |
667 | { | |
668 | .opcode = MLX4_CMD_CLOSE_PORT, | |
669 | .has_inbox = false, | |
670 | .has_outbox = false, | |
671 | .out_is_imm = false, | |
672 | .encode_slave_id = false, | |
673 | .verify = NULL, | |
674 | .wrapper = mlx4_CLOSE_PORT_wrapper | |
675 | }, | |
676 | { | |
677 | .opcode = MLX4_CMD_QUERY_PORT, | |
678 | .has_inbox = false, | |
679 | .has_outbox = true, | |
680 | .out_is_imm = false, | |
681 | .encode_slave_id = false, | |
682 | .verify = NULL, | |
683 | .wrapper = mlx4_QUERY_PORT_wrapper | |
684 | }, | |
ffe455ad EE |
685 | { |
686 | .opcode = MLX4_CMD_SET_PORT, | |
687 | .has_inbox = true, | |
688 | .has_outbox = false, | |
689 | .out_is_imm = false, | |
690 | .encode_slave_id = false, | |
691 | .verify = NULL, | |
692 | .wrapper = mlx4_SET_PORT_wrapper | |
693 | }, | |
c82e9aa0 EC |
694 | { |
695 | .opcode = MLX4_CMD_MAP_EQ, | |
696 | .has_inbox = false, | |
697 | .has_outbox = false, | |
698 | .out_is_imm = false, | |
699 | .encode_slave_id = false, | |
700 | .verify = NULL, | |
701 | .wrapper = mlx4_MAP_EQ_wrapper | |
702 | }, | |
703 | { | |
704 | .opcode = MLX4_CMD_SW2HW_EQ, | |
705 | .has_inbox = true, | |
706 | .has_outbox = false, | |
707 | .out_is_imm = false, | |
708 | .encode_slave_id = true, | |
709 | .verify = NULL, | |
710 | .wrapper = mlx4_SW2HW_EQ_wrapper | |
711 | }, | |
712 | { | |
713 | .opcode = MLX4_CMD_HW_HEALTH_CHECK, | |
714 | .has_inbox = false, | |
715 | .has_outbox = false, | |
716 | .out_is_imm = false, | |
717 | .encode_slave_id = false, | |
718 | .verify = NULL, | |
719 | .wrapper = NULL | |
720 | }, | |
721 | { | |
722 | .opcode = MLX4_CMD_NOP, | |
723 | .has_inbox = false, | |
724 | .has_outbox = false, | |
725 | .out_is_imm = false, | |
726 | .encode_slave_id = false, | |
727 | .verify = NULL, | |
728 | .wrapper = NULL | |
729 | }, | |
730 | { | |
731 | .opcode = MLX4_CMD_ALLOC_RES, | |
732 | .has_inbox = false, | |
733 | .has_outbox = false, | |
734 | .out_is_imm = true, | |
735 | .encode_slave_id = false, | |
736 | .verify = NULL, | |
737 | .wrapper = mlx4_ALLOC_RES_wrapper | |
738 | }, | |
739 | { | |
740 | .opcode = MLX4_CMD_FREE_RES, | |
741 | .has_inbox = false, | |
742 | .has_outbox = false, | |
743 | .out_is_imm = false, | |
744 | .encode_slave_id = false, | |
745 | .verify = NULL, | |
746 | .wrapper = mlx4_FREE_RES_wrapper | |
747 | }, | |
748 | { | |
749 | .opcode = MLX4_CMD_SW2HW_MPT, | |
750 | .has_inbox = true, | |
751 | .has_outbox = false, | |
752 | .out_is_imm = false, | |
753 | .encode_slave_id = true, | |
754 | .verify = NULL, | |
755 | .wrapper = mlx4_SW2HW_MPT_wrapper | |
756 | }, | |
757 | { | |
758 | .opcode = MLX4_CMD_QUERY_MPT, | |
759 | .has_inbox = false, | |
760 | .has_outbox = true, | |
761 | .out_is_imm = false, | |
762 | .encode_slave_id = false, | |
763 | .verify = NULL, | |
764 | .wrapper = mlx4_QUERY_MPT_wrapper | |
765 | }, | |
766 | { | |
767 | .opcode = MLX4_CMD_HW2SW_MPT, | |
768 | .has_inbox = false, | |
769 | .has_outbox = false, | |
770 | .out_is_imm = false, | |
771 | .encode_slave_id = false, | |
772 | .verify = NULL, | |
773 | .wrapper = mlx4_HW2SW_MPT_wrapper | |
774 | }, | |
775 | { | |
776 | .opcode = MLX4_CMD_READ_MTT, | |
777 | .has_inbox = false, | |
778 | .has_outbox = true, | |
779 | .out_is_imm = false, | |
780 | .encode_slave_id = false, | |
781 | .verify = NULL, | |
782 | .wrapper = NULL | |
783 | }, | |
784 | { | |
785 | .opcode = MLX4_CMD_WRITE_MTT, | |
786 | .has_inbox = true, | |
787 | .has_outbox = false, | |
788 | .out_is_imm = false, | |
789 | .encode_slave_id = false, | |
790 | .verify = NULL, | |
791 | .wrapper = mlx4_WRITE_MTT_wrapper | |
792 | }, | |
793 | { | |
794 | .opcode = MLX4_CMD_SYNC_TPT, | |
795 | .has_inbox = true, | |
796 | .has_outbox = false, | |
797 | .out_is_imm = false, | |
798 | .encode_slave_id = false, | |
799 | .verify = NULL, | |
800 | .wrapper = NULL | |
801 | }, | |
802 | { | |
803 | .opcode = MLX4_CMD_HW2SW_EQ, | |
804 | .has_inbox = false, | |
805 | .has_outbox = true, | |
806 | .out_is_imm = false, | |
807 | .encode_slave_id = true, | |
808 | .verify = NULL, | |
809 | .wrapper = mlx4_HW2SW_EQ_wrapper | |
810 | }, | |
811 | { | |
812 | .opcode = MLX4_CMD_QUERY_EQ, | |
813 | .has_inbox = false, | |
814 | .has_outbox = true, | |
815 | .out_is_imm = false, | |
816 | .encode_slave_id = true, | |
817 | .verify = NULL, | |
818 | .wrapper = mlx4_QUERY_EQ_wrapper | |
819 | }, | |
820 | { | |
821 | .opcode = MLX4_CMD_SW2HW_CQ, | |
822 | .has_inbox = true, | |
823 | .has_outbox = false, | |
824 | .out_is_imm = false, | |
825 | .encode_slave_id = true, | |
826 | .verify = NULL, | |
827 | .wrapper = mlx4_SW2HW_CQ_wrapper | |
828 | }, | |
829 | { | |
830 | .opcode = MLX4_CMD_HW2SW_CQ, | |
831 | .has_inbox = false, | |
832 | .has_outbox = false, | |
833 | .out_is_imm = false, | |
834 | .encode_slave_id = false, | |
835 | .verify = NULL, | |
836 | .wrapper = mlx4_HW2SW_CQ_wrapper | |
837 | }, | |
838 | { | |
839 | .opcode = MLX4_CMD_QUERY_CQ, | |
840 | .has_inbox = false, | |
841 | .has_outbox = true, | |
842 | .out_is_imm = false, | |
843 | .encode_slave_id = false, | |
844 | .verify = NULL, | |
845 | .wrapper = mlx4_QUERY_CQ_wrapper | |
846 | }, | |
847 | { | |
848 | .opcode = MLX4_CMD_MODIFY_CQ, | |
849 | .has_inbox = true, | |
850 | .has_outbox = false, | |
851 | .out_is_imm = true, | |
852 | .encode_slave_id = false, | |
853 | .verify = NULL, | |
854 | .wrapper = mlx4_MODIFY_CQ_wrapper | |
855 | }, | |
856 | { | |
857 | .opcode = MLX4_CMD_SW2HW_SRQ, | |
858 | .has_inbox = true, | |
859 | .has_outbox = false, | |
860 | .out_is_imm = false, | |
861 | .encode_slave_id = true, | |
862 | .verify = NULL, | |
863 | .wrapper = mlx4_SW2HW_SRQ_wrapper | |
864 | }, | |
865 | { | |
866 | .opcode = MLX4_CMD_HW2SW_SRQ, | |
867 | .has_inbox = false, | |
868 | .has_outbox = false, | |
869 | .out_is_imm = false, | |
870 | .encode_slave_id = false, | |
871 | .verify = NULL, | |
872 | .wrapper = mlx4_HW2SW_SRQ_wrapper | |
873 | }, | |
874 | { | |
875 | .opcode = MLX4_CMD_QUERY_SRQ, | |
876 | .has_inbox = false, | |
877 | .has_outbox = true, | |
878 | .out_is_imm = false, | |
879 | .encode_slave_id = false, | |
880 | .verify = NULL, | |
881 | .wrapper = mlx4_QUERY_SRQ_wrapper | |
882 | }, | |
883 | { | |
884 | .opcode = MLX4_CMD_ARM_SRQ, | |
885 | .has_inbox = false, | |
886 | .has_outbox = false, | |
887 | .out_is_imm = false, | |
888 | .encode_slave_id = false, | |
889 | .verify = NULL, | |
890 | .wrapper = mlx4_ARM_SRQ_wrapper | |
891 | }, | |
892 | { | |
893 | .opcode = MLX4_CMD_RST2INIT_QP, | |
894 | .has_inbox = true, | |
895 | .has_outbox = false, | |
896 | .out_is_imm = false, | |
897 | .encode_slave_id = true, | |
898 | .verify = NULL, | |
899 | .wrapper = mlx4_RST2INIT_QP_wrapper | |
900 | }, | |
901 | { | |
902 | .opcode = MLX4_CMD_INIT2INIT_QP, | |
903 | .has_inbox = true, | |
904 | .has_outbox = false, | |
905 | .out_is_imm = false, | |
906 | .encode_slave_id = false, | |
907 | .verify = NULL, | |
908 | .wrapper = mlx4_GEN_QP_wrapper | |
909 | }, | |
910 | { | |
911 | .opcode = MLX4_CMD_INIT2RTR_QP, | |
912 | .has_inbox = true, | |
913 | .has_outbox = false, | |
914 | .out_is_imm = false, | |
915 | .encode_slave_id = false, | |
916 | .verify = NULL, | |
917 | .wrapper = mlx4_INIT2RTR_QP_wrapper | |
918 | }, | |
919 | { | |
920 | .opcode = MLX4_CMD_RTR2RTS_QP, | |
921 | .has_inbox = true, | |
922 | .has_outbox = false, | |
923 | .out_is_imm = false, | |
924 | .encode_slave_id = false, | |
925 | .verify = NULL, | |
926 | .wrapper = mlx4_GEN_QP_wrapper | |
927 | }, | |
928 | { | |
929 | .opcode = MLX4_CMD_RTS2RTS_QP, | |
930 | .has_inbox = true, | |
931 | .has_outbox = false, | |
932 | .out_is_imm = false, | |
933 | .encode_slave_id = false, | |
934 | .verify = NULL, | |
935 | .wrapper = mlx4_GEN_QP_wrapper | |
936 | }, | |
937 | { | |
938 | .opcode = MLX4_CMD_SQERR2RTS_QP, | |
939 | .has_inbox = true, | |
940 | .has_outbox = false, | |
941 | .out_is_imm = false, | |
942 | .encode_slave_id = false, | |
943 | .verify = NULL, | |
944 | .wrapper = mlx4_GEN_QP_wrapper | |
945 | }, | |
946 | { | |
947 | .opcode = MLX4_CMD_2ERR_QP, | |
948 | .has_inbox = false, | |
949 | .has_outbox = false, | |
950 | .out_is_imm = false, | |
951 | .encode_slave_id = false, | |
952 | .verify = NULL, | |
953 | .wrapper = mlx4_GEN_QP_wrapper | |
954 | }, | |
955 | { | |
956 | .opcode = MLX4_CMD_RTS2SQD_QP, | |
957 | .has_inbox = false, | |
958 | .has_outbox = false, | |
959 | .out_is_imm = false, | |
960 | .encode_slave_id = false, | |
961 | .verify = NULL, | |
962 | .wrapper = mlx4_GEN_QP_wrapper | |
963 | }, | |
964 | { | |
965 | .opcode = MLX4_CMD_SQD2SQD_QP, | |
966 | .has_inbox = true, | |
967 | .has_outbox = false, | |
968 | .out_is_imm = false, | |
969 | .encode_slave_id = false, | |
970 | .verify = NULL, | |
971 | .wrapper = mlx4_GEN_QP_wrapper | |
972 | }, | |
973 | { | |
974 | .opcode = MLX4_CMD_SQD2RTS_QP, | |
975 | .has_inbox = true, | |
976 | .has_outbox = false, | |
977 | .out_is_imm = false, | |
978 | .encode_slave_id = false, | |
979 | .verify = NULL, | |
980 | .wrapper = mlx4_GEN_QP_wrapper | |
981 | }, | |
982 | { | |
983 | .opcode = MLX4_CMD_2RST_QP, | |
984 | .has_inbox = false, | |
985 | .has_outbox = false, | |
986 | .out_is_imm = false, | |
987 | .encode_slave_id = false, | |
988 | .verify = NULL, | |
989 | .wrapper = mlx4_2RST_QP_wrapper | |
990 | }, | |
991 | { | |
992 | .opcode = MLX4_CMD_QUERY_QP, | |
993 | .has_inbox = false, | |
994 | .has_outbox = true, | |
995 | .out_is_imm = false, | |
996 | .encode_slave_id = false, | |
997 | .verify = NULL, | |
998 | .wrapper = mlx4_GEN_QP_wrapper | |
999 | }, | |
1000 | { | |
1001 | .opcode = MLX4_CMD_SUSPEND_QP, | |
1002 | .has_inbox = false, | |
1003 | .has_outbox = false, | |
1004 | .out_is_imm = false, | |
1005 | .encode_slave_id = false, | |
1006 | .verify = NULL, | |
1007 | .wrapper = mlx4_GEN_QP_wrapper | |
1008 | }, | |
1009 | { | |
1010 | .opcode = MLX4_CMD_UNSUSPEND_QP, | |
1011 | .has_inbox = false, | |
1012 | .has_outbox = false, | |
1013 | .out_is_imm = false, | |
1014 | .encode_slave_id = false, | |
1015 | .verify = NULL, | |
1016 | .wrapper = mlx4_GEN_QP_wrapper | |
1017 | }, | |
1018 | { | |
1019 | .opcode = MLX4_CMD_QUERY_IF_STAT, | |
1020 | .has_inbox = false, | |
1021 | .has_outbox = true, | |
1022 | .out_is_imm = false, | |
1023 | .encode_slave_id = false, | |
1024 | .verify = NULL, | |
1025 | .wrapper = mlx4_QUERY_IF_STAT_wrapper | |
1026 | }, | |
1027 | /* Native multicast commands are not available for guests */ | |
1028 | { | |
1029 | .opcode = MLX4_CMD_QP_ATTACH, | |
1030 | .has_inbox = true, | |
1031 | .has_outbox = false, | |
1032 | .out_is_imm = false, | |
1033 | .encode_slave_id = false, | |
1034 | .verify = NULL, | |
1035 | .wrapper = mlx4_QP_ATTACH_wrapper | |
1036 | }, | |
0ec2c0f8 EE |
1037 | { |
1038 | .opcode = MLX4_CMD_PROMISC, | |
1039 | .has_inbox = false, | |
1040 | .has_outbox = false, | |
1041 | .out_is_imm = false, | |
1042 | .encode_slave_id = false, | |
1043 | .verify = NULL, | |
1044 | .wrapper = mlx4_PROMISC_wrapper | |
1045 | }, | |
ffe455ad EE |
1046 | /* Ethernet specific commands */ |
1047 | { | |
1048 | .opcode = MLX4_CMD_SET_VLAN_FLTR, | |
1049 | .has_inbox = true, | |
1050 | .has_outbox = false, | |
1051 | .out_is_imm = false, | |
1052 | .encode_slave_id = false, | |
1053 | .verify = NULL, | |
1054 | .wrapper = mlx4_SET_VLAN_FLTR_wrapper | |
1055 | }, | |
1056 | { | |
1057 | .opcode = MLX4_CMD_SET_MCAST_FLTR, | |
1058 | .has_inbox = false, | |
1059 | .has_outbox = false, | |
1060 | .out_is_imm = false, | |
1061 | .encode_slave_id = false, | |
1062 | .verify = NULL, | |
1063 | .wrapper = mlx4_SET_MCAST_FLTR_wrapper | |
1064 | }, | |
1065 | { | |
1066 | .opcode = MLX4_CMD_DUMP_ETH_STATS, | |
1067 | .has_inbox = false, | |
1068 | .has_outbox = true, | |
1069 | .out_is_imm = false, | |
1070 | .encode_slave_id = false, | |
1071 | .verify = NULL, | |
1072 | .wrapper = mlx4_DUMP_ETH_STATS_wrapper | |
1073 | }, | |
c82e9aa0 EC |
1074 | { |
1075 | .opcode = MLX4_CMD_INFORM_FLR_DONE, | |
1076 | .has_inbox = false, | |
1077 | .has_outbox = false, | |
1078 | .out_is_imm = false, | |
1079 | .encode_slave_id = false, | |
1080 | .verify = NULL, | |
1081 | .wrapper = NULL | |
1082 | }, | |
e8f081aa YP |
1083 | }; |
1084 | ||
1085 | static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave, | |
1086 | struct mlx4_vhcr_cmd *in_vhcr) | |
1087 | { | |
1088 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1089 | struct mlx4_cmd_info *cmd = NULL; | |
1090 | struct mlx4_vhcr_cmd *vhcr_cmd = in_vhcr ? in_vhcr : priv->mfunc.vhcr; | |
1091 | struct mlx4_vhcr *vhcr; | |
1092 | struct mlx4_cmd_mailbox *inbox = NULL; | |
1093 | struct mlx4_cmd_mailbox *outbox = NULL; | |
1094 | u64 in_param; | |
1095 | u64 out_param; | |
1096 | int ret = 0; | |
1097 | int i; | |
72be84f1 | 1098 | int err = 0; |
e8f081aa YP |
1099 | |
1100 | /* Create sw representation of Virtual HCR */ | |
1101 | vhcr = kzalloc(sizeof(struct mlx4_vhcr), GFP_KERNEL); | |
1102 | if (!vhcr) | |
1103 | return -ENOMEM; | |
1104 | ||
1105 | /* DMA in the vHCR */ | |
1106 | if (!in_vhcr) { | |
1107 | ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave, | |
1108 | priv->mfunc.master.slave_state[slave].vhcr_dma, | |
1109 | ALIGN(sizeof(struct mlx4_vhcr_cmd), | |
1110 | MLX4_ACCESS_MEM_ALIGN), 1); | |
1111 | if (ret) { | |
1112 | mlx4_err(dev, "%s:Failed reading vhcr" | |
1113 | "ret: 0x%x\n", __func__, ret); | |
1114 | kfree(vhcr); | |
1115 | return ret; | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | /* Fill SW VHCR fields */ | |
1120 | vhcr->in_param = be64_to_cpu(vhcr_cmd->in_param); | |
1121 | vhcr->out_param = be64_to_cpu(vhcr_cmd->out_param); | |
1122 | vhcr->in_modifier = be32_to_cpu(vhcr_cmd->in_modifier); | |
1123 | vhcr->token = be16_to_cpu(vhcr_cmd->token); | |
1124 | vhcr->op = be16_to_cpu(vhcr_cmd->opcode) & 0xfff; | |
1125 | vhcr->op_modifier = (u8) (be16_to_cpu(vhcr_cmd->opcode) >> 12); | |
1126 | vhcr->e_bit = vhcr_cmd->flags & (1 << 6); | |
1127 | ||
1128 | /* Lookup command */ | |
1129 | for (i = 0; i < ARRAY_SIZE(cmd_info); ++i) { | |
1130 | if (vhcr->op == cmd_info[i].opcode) { | |
1131 | cmd = &cmd_info[i]; | |
1132 | break; | |
1133 | } | |
1134 | } | |
1135 | if (!cmd) { | |
1136 | mlx4_err(dev, "Unknown command:0x%x accepted from slave:%d\n", | |
1137 | vhcr->op, slave); | |
72be84f1 | 1138 | vhcr_cmd->status = CMD_STAT_BAD_PARAM; |
e8f081aa YP |
1139 | goto out_status; |
1140 | } | |
1141 | ||
1142 | /* Read inbox */ | |
1143 | if (cmd->has_inbox) { | |
1144 | vhcr->in_param &= INBOX_MASK; | |
1145 | inbox = mlx4_alloc_cmd_mailbox(dev); | |
1146 | if (IS_ERR(inbox)) { | |
72be84f1 | 1147 | vhcr_cmd->status = CMD_STAT_BAD_SIZE; |
e8f081aa | 1148 | inbox = NULL; |
72be84f1 | 1149 | goto out_status; |
e8f081aa YP |
1150 | } |
1151 | ||
72be84f1 YP |
1152 | if (mlx4_ACCESS_MEM(dev, inbox->dma, slave, |
1153 | vhcr->in_param, | |
1154 | MLX4_MAILBOX_SIZE, 1)) { | |
e8f081aa YP |
1155 | mlx4_err(dev, "%s: Failed reading inbox (cmd:0x%x)\n", |
1156 | __func__, cmd->opcode); | |
72be84f1 YP |
1157 | vhcr_cmd->status = CMD_STAT_INTERNAL_ERR; |
1158 | goto out_status; | |
e8f081aa YP |
1159 | } |
1160 | } | |
1161 | ||
1162 | /* Apply permission and bound checks if applicable */ | |
1163 | if (cmd->verify && cmd->verify(dev, slave, vhcr, inbox)) { | |
1164 | mlx4_warn(dev, "Command:0x%x from slave: %d failed protection " | |
1165 | "checks for resource_id:%d\n", vhcr->op, slave, | |
1166 | vhcr->in_modifier); | |
72be84f1 | 1167 | vhcr_cmd->status = CMD_STAT_BAD_OP; |
e8f081aa YP |
1168 | goto out_status; |
1169 | } | |
1170 | ||
1171 | /* Allocate outbox */ | |
1172 | if (cmd->has_outbox) { | |
1173 | outbox = mlx4_alloc_cmd_mailbox(dev); | |
1174 | if (IS_ERR(outbox)) { | |
72be84f1 | 1175 | vhcr_cmd->status = CMD_STAT_BAD_SIZE; |
e8f081aa | 1176 | outbox = NULL; |
72be84f1 | 1177 | goto out_status; |
e8f081aa YP |
1178 | } |
1179 | } | |
1180 | ||
1181 | /* Execute the command! */ | |
1182 | if (cmd->wrapper) { | |
72be84f1 YP |
1183 | err = cmd->wrapper(dev, slave, vhcr, inbox, outbox, |
1184 | cmd); | |
e8f081aa YP |
1185 | if (cmd->out_is_imm) |
1186 | vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param); | |
1187 | } else { | |
1188 | in_param = cmd->has_inbox ? (u64) inbox->dma : | |
1189 | vhcr->in_param; | |
1190 | out_param = cmd->has_outbox ? (u64) outbox->dma : | |
1191 | vhcr->out_param; | |
72be84f1 YP |
1192 | err = __mlx4_cmd(dev, in_param, &out_param, |
1193 | cmd->out_is_imm, vhcr->in_modifier, | |
1194 | vhcr->op_modifier, vhcr->op, | |
1195 | MLX4_CMD_TIME_CLASS_A, | |
1196 | MLX4_CMD_NATIVE); | |
e8f081aa YP |
1197 | |
1198 | if (cmd->out_is_imm) { | |
1199 | vhcr->out_param = out_param; | |
1200 | vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param); | |
1201 | } | |
1202 | } | |
1203 | ||
72be84f1 YP |
1204 | if (err) { |
1205 | mlx4_warn(dev, "vhcr command:0x%x slave:%d failed with" | |
1206 | " error:%d, status %d\n", | |
1207 | vhcr->op, slave, vhcr->errno, err); | |
1208 | vhcr_cmd->status = mlx4_errno_to_status(err); | |
1209 | goto out_status; | |
1210 | } | |
1211 | ||
1212 | ||
e8f081aa | 1213 | /* Write outbox if command completed successfully */ |
72be84f1 | 1214 | if (cmd->has_outbox && !vhcr_cmd->status) { |
e8f081aa YP |
1215 | ret = mlx4_ACCESS_MEM(dev, outbox->dma, slave, |
1216 | vhcr->out_param, | |
1217 | MLX4_MAILBOX_SIZE, MLX4_CMD_WRAPPED); | |
1218 | if (ret) { | |
72be84f1 YP |
1219 | /* If we failed to write back the outbox after the |
1220 | *command was successfully executed, we must fail this | |
1221 | * slave, as it is now in undefined state */ | |
e8f081aa YP |
1222 | mlx4_err(dev, "%s:Failed writing outbox\n", __func__); |
1223 | goto out; | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | out_status: | |
1228 | /* DMA back vhcr result */ | |
1229 | if (!in_vhcr) { | |
1230 | ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave, | |
1231 | priv->mfunc.master.slave_state[slave].vhcr_dma, | |
1232 | ALIGN(sizeof(struct mlx4_vhcr), | |
1233 | MLX4_ACCESS_MEM_ALIGN), | |
1234 | MLX4_CMD_WRAPPED); | |
1235 | if (ret) | |
1236 | mlx4_err(dev, "%s:Failed writing vhcr result\n", | |
1237 | __func__); | |
1238 | else if (vhcr->e_bit && | |
1239 | mlx4_GEN_EQE(dev, slave, &priv->mfunc.master.cmd_eqe)) | |
1240 | mlx4_warn(dev, "Failed to generate command completion " | |
1241 | "eqe for slave %d\n", slave); | |
1242 | } | |
1243 | ||
1244 | out: | |
1245 | kfree(vhcr); | |
1246 | mlx4_free_cmd_mailbox(dev, inbox); | |
1247 | mlx4_free_cmd_mailbox(dev, outbox); | |
1248 | return ret; | |
1249 | } | |
1250 | ||
1251 | static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd, | |
1252 | u16 param, u8 toggle) | |
1253 | { | |
1254 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1255 | struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state; | |
1256 | u32 reply; | |
e8f081aa | 1257 | u8 is_going_down = 0; |
803143fb | 1258 | int i; |
e8f081aa YP |
1259 | |
1260 | slave_state[slave].comm_toggle ^= 1; | |
1261 | reply = (u32) slave_state[slave].comm_toggle << 31; | |
1262 | if (toggle != slave_state[slave].comm_toggle) { | |
1263 | mlx4_warn(dev, "Incorrect toggle %d from slave %d. *** MASTER" | |
1264 | "STATE COMPROMISIED ***\n", toggle, slave); | |
1265 | goto reset_slave; | |
1266 | } | |
1267 | if (cmd == MLX4_COMM_CMD_RESET) { | |
1268 | mlx4_warn(dev, "Received reset from slave:%d\n", slave); | |
1269 | slave_state[slave].active = false; | |
803143fb MA |
1270 | for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) { |
1271 | slave_state[slave].event_eq[i].eqn = -1; | |
1272 | slave_state[slave].event_eq[i].token = 0; | |
1273 | } | |
e8f081aa YP |
1274 | /*check if we are in the middle of FLR process, |
1275 | if so return "retry" status to the slave*/ | |
162344ed | 1276 | if (MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd) |
e8f081aa | 1277 | goto inform_slave_state; |
e8f081aa YP |
1278 | |
1279 | /* write the version in the event field */ | |
1280 | reply |= mlx4_comm_get_version(); | |
1281 | ||
1282 | goto reset_slave; | |
1283 | } | |
1284 | /*command from slave in the middle of FLR*/ | |
1285 | if (cmd != MLX4_COMM_CMD_RESET && | |
1286 | MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd) { | |
1287 | mlx4_warn(dev, "slave:%d is Trying to run cmd(0x%x) " | |
1288 | "in the middle of FLR\n", slave, cmd); | |
1289 | return; | |
1290 | } | |
1291 | ||
1292 | switch (cmd) { | |
1293 | case MLX4_COMM_CMD_VHCR0: | |
1294 | if (slave_state[slave].last_cmd != MLX4_COMM_CMD_RESET) | |
1295 | goto reset_slave; | |
1296 | slave_state[slave].vhcr_dma = ((u64) param) << 48; | |
1297 | priv->mfunc.master.slave_state[slave].cookie = 0; | |
1298 | mutex_init(&priv->mfunc.master.gen_eqe_mutex[slave]); | |
1299 | break; | |
1300 | case MLX4_COMM_CMD_VHCR1: | |
1301 | if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR0) | |
1302 | goto reset_slave; | |
1303 | slave_state[slave].vhcr_dma |= ((u64) param) << 32; | |
1304 | break; | |
1305 | case MLX4_COMM_CMD_VHCR2: | |
1306 | if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR1) | |
1307 | goto reset_slave; | |
1308 | slave_state[slave].vhcr_dma |= ((u64) param) << 16; | |
1309 | break; | |
1310 | case MLX4_COMM_CMD_VHCR_EN: | |
1311 | if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR2) | |
1312 | goto reset_slave; | |
1313 | slave_state[slave].vhcr_dma |= param; | |
1314 | slave_state[slave].active = true; | |
1315 | break; | |
1316 | case MLX4_COMM_CMD_VHCR_POST: | |
1317 | if ((slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_EN) && | |
1318 | (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_POST)) | |
1319 | goto reset_slave; | |
1320 | down(&priv->cmd.slave_sem); | |
1321 | if (mlx4_master_process_vhcr(dev, slave, NULL)) { | |
1322 | mlx4_err(dev, "Failed processing vhcr for slave:%d," | |
8d9eb069 | 1323 | " resetting slave.\n", slave); |
e8f081aa YP |
1324 | up(&priv->cmd.slave_sem); |
1325 | goto reset_slave; | |
1326 | } | |
1327 | up(&priv->cmd.slave_sem); | |
1328 | break; | |
1329 | default: | |
1330 | mlx4_warn(dev, "Bad comm cmd:%d from slave:%d\n", cmd, slave); | |
1331 | goto reset_slave; | |
1332 | } | |
1333 | spin_lock(&priv->mfunc.master.slave_state_lock); | |
1334 | if (!slave_state[slave].is_slave_going_down) | |
1335 | slave_state[slave].last_cmd = cmd; | |
1336 | else | |
1337 | is_going_down = 1; | |
1338 | spin_unlock(&priv->mfunc.master.slave_state_lock); | |
1339 | if (is_going_down) { | |
1340 | mlx4_warn(dev, "Slave is going down aborting command(%d)" | |
1341 | " executing from slave:%d\n", | |
1342 | cmd, slave); | |
1343 | return; | |
1344 | } | |
1345 | __raw_writel((__force u32) cpu_to_be32(reply), | |
1346 | &priv->mfunc.comm[slave].slave_read); | |
1347 | mmiowb(); | |
1348 | ||
1349 | return; | |
1350 | ||
1351 | reset_slave: | |
c82e9aa0 EC |
1352 | /* cleanup any slave resources */ |
1353 | mlx4_delete_all_resources_for_slave(dev, slave); | |
e8f081aa YP |
1354 | spin_lock(&priv->mfunc.master.slave_state_lock); |
1355 | if (!slave_state[slave].is_slave_going_down) | |
1356 | slave_state[slave].last_cmd = MLX4_COMM_CMD_RESET; | |
1357 | spin_unlock(&priv->mfunc.master.slave_state_lock); | |
1358 | /*with slave in the middle of flr, no need to clean resources again.*/ | |
1359 | inform_slave_state: | |
1360 | memset(&slave_state[slave].event_eq, 0, | |
1361 | sizeof(struct mlx4_slave_event_eq_info)); | |
1362 | __raw_writel((__force u32) cpu_to_be32(reply), | |
1363 | &priv->mfunc.comm[slave].slave_read); | |
1364 | wmb(); | |
1365 | } | |
1366 | ||
1367 | /* master command processing */ | |
1368 | void mlx4_master_comm_channel(struct work_struct *work) | |
1369 | { | |
1370 | struct mlx4_mfunc_master_ctx *master = | |
1371 | container_of(work, | |
1372 | struct mlx4_mfunc_master_ctx, | |
1373 | comm_work); | |
1374 | struct mlx4_mfunc *mfunc = | |
1375 | container_of(master, struct mlx4_mfunc, master); | |
1376 | struct mlx4_priv *priv = | |
1377 | container_of(mfunc, struct mlx4_priv, mfunc); | |
1378 | struct mlx4_dev *dev = &priv->dev; | |
1379 | __be32 *bit_vec; | |
1380 | u32 comm_cmd; | |
1381 | u32 vec; | |
1382 | int i, j, slave; | |
1383 | int toggle; | |
1384 | int served = 0; | |
1385 | int reported = 0; | |
1386 | u32 slt; | |
1387 | ||
1388 | bit_vec = master->comm_arm_bit_vector; | |
1389 | for (i = 0; i < COMM_CHANNEL_BIT_ARRAY_SIZE; i++) { | |
1390 | vec = be32_to_cpu(bit_vec[i]); | |
1391 | for (j = 0; j < 32; j++) { | |
1392 | if (!(vec & (1 << j))) | |
1393 | continue; | |
1394 | ++reported; | |
1395 | slave = (i * 32) + j; | |
1396 | comm_cmd = swab32(readl( | |
1397 | &mfunc->comm[slave].slave_write)); | |
1398 | slt = swab32(readl(&mfunc->comm[slave].slave_read)) | |
1399 | >> 31; | |
1400 | toggle = comm_cmd >> 31; | |
1401 | if (toggle != slt) { | |
1402 | if (master->slave_state[slave].comm_toggle | |
1403 | != slt) { | |
1404 | printk(KERN_INFO "slave %d out of sync." | |
1405 | " read toggle %d, state toggle %d. " | |
1406 | "Resynching.\n", slave, slt, | |
1407 | master->slave_state[slave].comm_toggle); | |
1408 | master->slave_state[slave].comm_toggle = | |
1409 | slt; | |
1410 | } | |
1411 | mlx4_master_do_cmd(dev, slave, | |
1412 | comm_cmd >> 16 & 0xff, | |
1413 | comm_cmd & 0xffff, toggle); | |
1414 | ++served; | |
1415 | } | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | if (reported && reported != served) | |
1420 | mlx4_warn(dev, "Got command event with bitmask from %d slaves" | |
1421 | " but %d were served\n", | |
1422 | reported, served); | |
1423 | ||
1424 | if (mlx4_ARM_COMM_CHANNEL(dev)) | |
1425 | mlx4_warn(dev, "Failed to arm comm channel events\n"); | |
1426 | } | |
1427 | ||
ab9c17a0 JM |
1428 | static int sync_toggles(struct mlx4_dev *dev) |
1429 | { | |
1430 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1431 | int wr_toggle; | |
1432 | int rd_toggle; | |
1433 | unsigned long end; | |
1434 | ||
1435 | wr_toggle = swab32(readl(&priv->mfunc.comm->slave_write)) >> 31; | |
1436 | end = jiffies + msecs_to_jiffies(5000); | |
1437 | ||
1438 | while (time_before(jiffies, end)) { | |
1439 | rd_toggle = swab32(readl(&priv->mfunc.comm->slave_read)) >> 31; | |
1440 | if (rd_toggle == wr_toggle) { | |
1441 | priv->cmd.comm_toggle = rd_toggle; | |
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | cond_resched(); | |
1446 | } | |
1447 | ||
1448 | /* | |
1449 | * we could reach here if for example the previous VM using this | |
1450 | * function misbehaved and left the channel with unsynced state. We | |
1451 | * should fix this here and give this VM a chance to use a properly | |
1452 | * synced channel | |
1453 | */ | |
1454 | mlx4_warn(dev, "recovering from previously mis-behaved VM\n"); | |
1455 | __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_read); | |
1456 | __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_write); | |
1457 | priv->cmd.comm_toggle = 0; | |
1458 | ||
1459 | return 0; | |
1460 | } | |
1461 | ||
1462 | int mlx4_multi_func_init(struct mlx4_dev *dev) | |
1463 | { | |
1464 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1465 | struct mlx4_slave_state *s_state; | |
803143fb | 1466 | int i, j, err, port; |
ab9c17a0 JM |
1467 | |
1468 | priv->mfunc.vhcr = dma_alloc_coherent(&(dev->pdev->dev), PAGE_SIZE, | |
1469 | &priv->mfunc.vhcr_dma, | |
1470 | GFP_KERNEL); | |
1471 | if (!priv->mfunc.vhcr) { | |
1472 | mlx4_err(dev, "Couldn't allocate vhcr.\n"); | |
1473 | return -ENOMEM; | |
1474 | } | |
1475 | ||
1476 | if (mlx4_is_master(dev)) | |
1477 | priv->mfunc.comm = | |
1478 | ioremap(pci_resource_start(dev->pdev, priv->fw.comm_bar) + | |
1479 | priv->fw.comm_base, MLX4_COMM_PAGESIZE); | |
1480 | else | |
1481 | priv->mfunc.comm = | |
1482 | ioremap(pci_resource_start(dev->pdev, 2) + | |
1483 | MLX4_SLAVE_COMM_BASE, MLX4_COMM_PAGESIZE); | |
1484 | if (!priv->mfunc.comm) { | |
1485 | mlx4_err(dev, "Couldn't map communication vector.\n"); | |
1486 | goto err_vhcr; | |
1487 | } | |
1488 | ||
1489 | if (mlx4_is_master(dev)) { | |
1490 | priv->mfunc.master.slave_state = | |
1491 | kzalloc(dev->num_slaves * | |
1492 | sizeof(struct mlx4_slave_state), GFP_KERNEL); | |
1493 | if (!priv->mfunc.master.slave_state) | |
1494 | goto err_comm; | |
1495 | ||
1496 | for (i = 0; i < dev->num_slaves; ++i) { | |
1497 | s_state = &priv->mfunc.master.slave_state[i]; | |
1498 | s_state->last_cmd = MLX4_COMM_CMD_RESET; | |
803143fb MA |
1499 | for (j = 0; j < MLX4_EVENT_TYPES_NUM; ++j) |
1500 | s_state->event_eq[j].eqn = -1; | |
ab9c17a0 JM |
1501 | __raw_writel((__force u32) 0, |
1502 | &priv->mfunc.comm[i].slave_write); | |
1503 | __raw_writel((__force u32) 0, | |
1504 | &priv->mfunc.comm[i].slave_read); | |
1505 | mmiowb(); | |
1506 | for (port = 1; port <= MLX4_MAX_PORTS; port++) { | |
1507 | s_state->vlan_filter[port] = | |
1508 | kzalloc(sizeof(struct mlx4_vlan_fltr), | |
1509 | GFP_KERNEL); | |
1510 | if (!s_state->vlan_filter[port]) { | |
1511 | if (--port) | |
1512 | kfree(s_state->vlan_filter[port]); | |
1513 | goto err_slaves; | |
1514 | } | |
1515 | INIT_LIST_HEAD(&s_state->mcast_filters[port]); | |
1516 | } | |
1517 | spin_lock_init(&s_state->lock); | |
1518 | } | |
1519 | ||
1520 | memset(&priv->mfunc.master.cmd_eqe, 0, sizeof(struct mlx4_eqe)); | |
1521 | priv->mfunc.master.cmd_eqe.type = MLX4_EVENT_TYPE_CMD; | |
1522 | INIT_WORK(&priv->mfunc.master.comm_work, | |
1523 | mlx4_master_comm_channel); | |
1524 | INIT_WORK(&priv->mfunc.master.slave_event_work, | |
1525 | mlx4_gen_slave_eqe); | |
1526 | INIT_WORK(&priv->mfunc.master.slave_flr_event_work, | |
1527 | mlx4_master_handle_slave_flr); | |
1528 | spin_lock_init(&priv->mfunc.master.slave_state_lock); | |
1529 | priv->mfunc.master.comm_wq = | |
1530 | create_singlethread_workqueue("mlx4_comm"); | |
1531 | if (!priv->mfunc.master.comm_wq) | |
1532 | goto err_slaves; | |
1533 | ||
1534 | if (mlx4_init_resource_tracker(dev)) | |
1535 | goto err_thread; | |
1536 | ||
1537 | sema_init(&priv->cmd.slave_sem, 1); | |
1538 | err = mlx4_ARM_COMM_CHANNEL(dev); | |
1539 | if (err) { | |
1540 | mlx4_err(dev, " Failed to arm comm channel eq: %x\n", | |
1541 | err); | |
1542 | goto err_resource; | |
1543 | } | |
1544 | ||
1545 | } else { | |
1546 | err = sync_toggles(dev); | |
1547 | if (err) { | |
1548 | mlx4_err(dev, "Couldn't sync toggles\n"); | |
1549 | goto err_comm; | |
1550 | } | |
1551 | ||
1552 | sema_init(&priv->cmd.slave_sem, 1); | |
1553 | } | |
1554 | return 0; | |
1555 | ||
1556 | err_resource: | |
b8924951 | 1557 | mlx4_free_resource_tracker(dev, RES_TR_FREE_ALL); |
ab9c17a0 JM |
1558 | err_thread: |
1559 | flush_workqueue(priv->mfunc.master.comm_wq); | |
1560 | destroy_workqueue(priv->mfunc.master.comm_wq); | |
1561 | err_slaves: | |
1562 | while (--i) { | |
1563 | for (port = 1; port <= MLX4_MAX_PORTS; port++) | |
1564 | kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]); | |
1565 | } | |
1566 | kfree(priv->mfunc.master.slave_state); | |
1567 | err_comm: | |
1568 | iounmap(priv->mfunc.comm); | |
1569 | err_vhcr: | |
1570 | dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE, | |
1571 | priv->mfunc.vhcr, | |
1572 | priv->mfunc.vhcr_dma); | |
1573 | priv->mfunc.vhcr = NULL; | |
1574 | return -ENOMEM; | |
1575 | } | |
1576 | ||
225c7b1f RD |
1577 | int mlx4_cmd_init(struct mlx4_dev *dev) |
1578 | { | |
1579 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1580 | ||
1581 | mutex_init(&priv->cmd.hcr_mutex); | |
1582 | sema_init(&priv->cmd.poll_sem, 1); | |
1583 | priv->cmd.use_events = 0; | |
1584 | priv->cmd.toggle = 1; | |
1585 | ||
e8f081aa YP |
1586 | priv->cmd.hcr = NULL; |
1587 | priv->mfunc.vhcr = NULL; | |
1588 | ||
1589 | if (!mlx4_is_slave(dev)) { | |
1590 | priv->cmd.hcr = ioremap(pci_resource_start(dev->pdev, 0) + | |
1591 | MLX4_HCR_BASE, MLX4_HCR_SIZE); | |
1592 | if (!priv->cmd.hcr) { | |
1593 | mlx4_err(dev, "Couldn't map command register.\n"); | |
1594 | return -ENOMEM; | |
1595 | } | |
225c7b1f RD |
1596 | } |
1597 | ||
1598 | priv->cmd.pool = pci_pool_create("mlx4_cmd", dev->pdev, | |
1599 | MLX4_MAILBOX_SIZE, | |
1600 | MLX4_MAILBOX_SIZE, 0); | |
e8f081aa YP |
1601 | if (!priv->cmd.pool) |
1602 | goto err_hcr; | |
225c7b1f RD |
1603 | |
1604 | return 0; | |
e8f081aa YP |
1605 | |
1606 | err_hcr: | |
1607 | if (!mlx4_is_slave(dev)) | |
1608 | iounmap(priv->cmd.hcr); | |
1609 | return -ENOMEM; | |
225c7b1f RD |
1610 | } |
1611 | ||
ab9c17a0 JM |
1612 | void mlx4_multi_func_cleanup(struct mlx4_dev *dev) |
1613 | { | |
1614 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1615 | int i, port; | |
1616 | ||
1617 | if (mlx4_is_master(dev)) { | |
1618 | flush_workqueue(priv->mfunc.master.comm_wq); | |
1619 | destroy_workqueue(priv->mfunc.master.comm_wq); | |
1620 | for (i = 0; i < dev->num_slaves; i++) { | |
1621 | for (port = 1; port <= MLX4_MAX_PORTS; port++) | |
1622 | kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]); | |
1623 | } | |
1624 | kfree(priv->mfunc.master.slave_state); | |
ab9c17a0 | 1625 | } |
f08ad06c EE |
1626 | |
1627 | iounmap(priv->mfunc.comm); | |
1628 | dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE, | |
1629 | priv->mfunc.vhcr, priv->mfunc.vhcr_dma); | |
1630 | priv->mfunc.vhcr = NULL; | |
ab9c17a0 JM |
1631 | } |
1632 | ||
225c7b1f RD |
1633 | void mlx4_cmd_cleanup(struct mlx4_dev *dev) |
1634 | { | |
1635 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1636 | ||
1637 | pci_pool_destroy(priv->cmd.pool); | |
e8f081aa YP |
1638 | |
1639 | if (!mlx4_is_slave(dev)) | |
1640 | iounmap(priv->cmd.hcr); | |
225c7b1f RD |
1641 | } |
1642 | ||
1643 | /* | |
1644 | * Switch to using events to issue FW commands (can only be called | |
1645 | * after event queue for command events has been initialized). | |
1646 | */ | |
1647 | int mlx4_cmd_use_events(struct mlx4_dev *dev) | |
1648 | { | |
1649 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1650 | int i; | |
e8f081aa | 1651 | int err = 0; |
225c7b1f RD |
1652 | |
1653 | priv->cmd.context = kmalloc(priv->cmd.max_cmds * | |
1654 | sizeof (struct mlx4_cmd_context), | |
1655 | GFP_KERNEL); | |
1656 | if (!priv->cmd.context) | |
1657 | return -ENOMEM; | |
1658 | ||
1659 | for (i = 0; i < priv->cmd.max_cmds; ++i) { | |
1660 | priv->cmd.context[i].token = i; | |
1661 | priv->cmd.context[i].next = i + 1; | |
1662 | } | |
1663 | ||
1664 | priv->cmd.context[priv->cmd.max_cmds - 1].next = -1; | |
1665 | priv->cmd.free_head = 0; | |
1666 | ||
1667 | sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds); | |
1668 | spin_lock_init(&priv->cmd.context_lock); | |
1669 | ||
1670 | for (priv->cmd.token_mask = 1; | |
1671 | priv->cmd.token_mask < priv->cmd.max_cmds; | |
1672 | priv->cmd.token_mask <<= 1) | |
1673 | ; /* nothing */ | |
1674 | --priv->cmd.token_mask; | |
1675 | ||
225c7b1f | 1676 | down(&priv->cmd.poll_sem); |
e8f081aa | 1677 | priv->cmd.use_events = 1; |
225c7b1f | 1678 | |
e8f081aa | 1679 | return err; |
225c7b1f RD |
1680 | } |
1681 | ||
1682 | /* | |
1683 | * Switch back to polling (used when shutting down the device) | |
1684 | */ | |
1685 | void mlx4_cmd_use_polling(struct mlx4_dev *dev) | |
1686 | { | |
1687 | struct mlx4_priv *priv = mlx4_priv(dev); | |
1688 | int i; | |
1689 | ||
1690 | priv->cmd.use_events = 0; | |
1691 | ||
1692 | for (i = 0; i < priv->cmd.max_cmds; ++i) | |
1693 | down(&priv->cmd.event_sem); | |
1694 | ||
1695 | kfree(priv->cmd.context); | |
1696 | ||
1697 | up(&priv->cmd.poll_sem); | |
1698 | } | |
1699 | ||
1700 | struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev) | |
1701 | { | |
1702 | struct mlx4_cmd_mailbox *mailbox; | |
1703 | ||
1704 | mailbox = kmalloc(sizeof *mailbox, GFP_KERNEL); | |
1705 | if (!mailbox) | |
1706 | return ERR_PTR(-ENOMEM); | |
1707 | ||
1708 | mailbox->buf = pci_pool_alloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL, | |
1709 | &mailbox->dma); | |
1710 | if (!mailbox->buf) { | |
1711 | kfree(mailbox); | |
1712 | return ERR_PTR(-ENOMEM); | |
1713 | } | |
1714 | ||
1715 | return mailbox; | |
1716 | } | |
1717 | EXPORT_SYMBOL_GPL(mlx4_alloc_cmd_mailbox); | |
1718 | ||
e8f081aa YP |
1719 | void mlx4_free_cmd_mailbox(struct mlx4_dev *dev, |
1720 | struct mlx4_cmd_mailbox *mailbox) | |
225c7b1f RD |
1721 | { |
1722 | if (!mailbox) | |
1723 | return; | |
1724 | ||
1725 | pci_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma); | |
1726 | kfree(mailbox); | |
1727 | } | |
1728 | EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox); | |
e8f081aa YP |
1729 | |
1730 | u32 mlx4_comm_get_version(void) | |
1731 | { | |
1732 | return ((u32) CMD_CHAN_IF_REV << 8) | (u32) CMD_CHAN_VER; | |
1733 | } |