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Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / net / ethernet / mellanox / mlx4 / cmd.c
blobd48d5793407d9ec729fe8548a049a2506d02a934
1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
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>
36 #include <linux/slab.h>
37 #include <linux/export.h>
38 #include <linux/pci.h>
39 #include <linux/errno.h>
40
41 #include <linux/mlx4/cmd.h>
42 #include <linux/mlx4/device.h>
43 #include <linux/semaphore.h>
44 #include <rdma/ib_smi.h>
45 #include <linux/delay.h>
46
47 #include <asm/io.h>
48
49 #include "mlx4.h"
50 #include "fw.h"
51 #include "fw_qos.h"
52 #include "mlx4_stats.h"
53
54 #define CMD_POLL_TOKEN 0xffff
55 #define INBOX_MASK 0xffffffffffffff00ULL
56
57 #define CMD_CHAN_VER 1
58 #define CMD_CHAN_IF_REV 1
59
60 enum {
61 /* command completed successfully: */
62 CMD_STAT_OK = 0x00,
63 /* Internal error (such as a bus error) occurred while processing command: */
64 CMD_STAT_INTERNAL_ERR = 0x01,
65 /* Operation/command not supported or opcode modifier not supported: */
66 CMD_STAT_BAD_OP = 0x02,
67 /* Parameter not supported or parameter out of range: */
68 CMD_STAT_BAD_PARAM = 0x03,
69 /* System not enabled or bad system state: */
70 CMD_STAT_BAD_SYS_STATE = 0x04,
71 /* Attempt to access reserved or unallocaterd resource: */
72 CMD_STAT_BAD_RESOURCE = 0x05,
73 /* Requested resource is currently executing a command, or is otherwise busy: */
74 CMD_STAT_RESOURCE_BUSY = 0x06,
75 /* Required capability exceeds device limits: */
76 CMD_STAT_EXCEED_LIM = 0x08,
77 /* Resource is not in the appropriate state or ownership: */
78 CMD_STAT_BAD_RES_STATE = 0x09,
79 /* Index out of range: */
80 CMD_STAT_BAD_INDEX = 0x0a,
81 /* FW image corrupted: */
82 CMD_STAT_BAD_NVMEM = 0x0b,
83 /* Error in ICM mapping (e.g. not enough auxiliary ICM pages to execute command): */
84 CMD_STAT_ICM_ERROR = 0x0c,
85 /* Attempt to modify a QP/EE which is not in the presumed state: */
86 CMD_STAT_BAD_QP_STATE = 0x10,
87 /* Bad segment parameters (Address/Size): */
88 CMD_STAT_BAD_SEG_PARAM = 0x20,
89 /* Memory Region has Memory Windows bound to: */
90 CMD_STAT_REG_BOUND = 0x21,
91 /* HCA local attached memory not present: */
92 CMD_STAT_LAM_NOT_PRE = 0x22,
93 /* Bad management packet (silently discarded): */
94 CMD_STAT_BAD_PKT = 0x30,
95 /* More outstanding CQEs in CQ than new CQ size: */
96 CMD_STAT_BAD_SIZE = 0x40,
97 /* Multi Function device support required: */
98 CMD_STAT_MULTI_FUNC_REQ = 0x50,
99 };
100
101 enum {
102 HCR_IN_PARAM_OFFSET = 0x00,
103 HCR_IN_MODIFIER_OFFSET = 0x08,
104 HCR_OUT_PARAM_OFFSET = 0x0c,
105 HCR_TOKEN_OFFSET = 0x14,
106 HCR_STATUS_OFFSET = 0x18,
107
108 HCR_OPMOD_SHIFT = 12,
109 HCR_T_BIT = 21,
110 HCR_E_BIT = 22,
111 HCR_GO_BIT = 23
112 };
113
114 enum {
115 GO_BIT_TIMEOUT_MSECS = 10000
116 };
117
118 enum mlx4_vlan_transition {
119 MLX4_VLAN_TRANSITION_VST_VST = 0,
120 MLX4_VLAN_TRANSITION_VST_VGT = 1,
121 MLX4_VLAN_TRANSITION_VGT_VST = 2,
122 MLX4_VLAN_TRANSITION_VGT_VGT = 3,
123 };
124
125
126 struct mlx4_cmd_context {
127 struct completion done;
128 int result;
129 int next;
130 u64 out_param;
131 u16 token;
132 u8 fw_status;
133 };
134
135 static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
136 struct mlx4_vhcr_cmd *in_vhcr);
137
138 static int mlx4_status_to_errno(u8 status)
139 {
140 static const int trans_table[] = {
141 [CMD_STAT_INTERNAL_ERR] = -EIO,
142 [CMD_STAT_BAD_OP] = -EPERM,
143 [CMD_STAT_BAD_PARAM] = -EINVAL,
144 [CMD_STAT_BAD_SYS_STATE] = -ENXIO,
145 [CMD_STAT_BAD_RESOURCE] = -EBADF,
146 [CMD_STAT_RESOURCE_BUSY] = -EBUSY,
147 [CMD_STAT_EXCEED_LIM] = -ENOMEM,
148 [CMD_STAT_BAD_RES_STATE] = -EBADF,
149 [CMD_STAT_BAD_INDEX] = -EBADF,
150 [CMD_STAT_BAD_NVMEM] = -EFAULT,
151 [CMD_STAT_ICM_ERROR] = -ENFILE,
152 [CMD_STAT_BAD_QP_STATE] = -EINVAL,
153 [CMD_STAT_BAD_SEG_PARAM] = -EFAULT,
154 [CMD_STAT_REG_BOUND] = -EBUSY,
155 [CMD_STAT_LAM_NOT_PRE] = -EAGAIN,
156 [CMD_STAT_BAD_PKT] = -EINVAL,
157 [CMD_STAT_BAD_SIZE] = -ENOMEM,
158 [CMD_STAT_MULTI_FUNC_REQ] = -EACCES,
159 };
160
161 if (status >= ARRAY_SIZE(trans_table) ||
162 (status != CMD_STAT_OK && trans_table[status] == 0))
163 return -EIO;
164
165 return trans_table[status];
166 }
167
168 static u8 mlx4_errno_to_status(int errno)
169 {
170 switch (errno) {
171 case -EPERM:
172 return CMD_STAT_BAD_OP;
173 case -EINVAL:
174 return CMD_STAT_BAD_PARAM;
175 case -ENXIO:
176 return CMD_STAT_BAD_SYS_STATE;
177 case -EBUSY:
178 return CMD_STAT_RESOURCE_BUSY;
179 case -ENOMEM:
180 return CMD_STAT_EXCEED_LIM;
181 case -ENFILE:
182 return CMD_STAT_ICM_ERROR;
183 default:
184 return CMD_STAT_INTERNAL_ERR;
185 }
186 }
187
188 static int mlx4_internal_err_ret_value(struct mlx4_dev *dev, u16 op,
189 u8 op_modifier)
190 {
191 switch (op) {
192 case MLX4_CMD_UNMAP_ICM:
193 case MLX4_CMD_UNMAP_ICM_AUX:
194 case MLX4_CMD_UNMAP_FA:
195 case MLX4_CMD_2RST_QP:
196 case MLX4_CMD_HW2SW_EQ:
197 case MLX4_CMD_HW2SW_CQ:
198 case MLX4_CMD_HW2SW_SRQ:
199 case MLX4_CMD_HW2SW_MPT:
200 case MLX4_CMD_CLOSE_HCA:
201 case MLX4_QP_FLOW_STEERING_DETACH:
202 case MLX4_CMD_FREE_RES:
203 case MLX4_CMD_CLOSE_PORT:
204 return CMD_STAT_OK;
205
206 case MLX4_CMD_QP_ATTACH:
207 /* On Detach case return success */
208 if (op_modifier == 0)
209 return CMD_STAT_OK;
210 return mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
211
212 default:
213 return mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
214 }
215 }
216
217 static int mlx4_closing_cmd_fatal_error(u16 op, u8 fw_status)
218 {
219 /* Any error during the closing commands below is considered fatal */
220 if (op == MLX4_CMD_CLOSE_HCA ||
221 op == MLX4_CMD_HW2SW_EQ ||
222 op == MLX4_CMD_HW2SW_CQ ||
223 op == MLX4_CMD_2RST_QP ||
224 op == MLX4_CMD_HW2SW_SRQ ||
225 op == MLX4_CMD_SYNC_TPT ||
226 op == MLX4_CMD_UNMAP_ICM ||
227 op == MLX4_CMD_UNMAP_ICM_AUX ||
228 op == MLX4_CMD_UNMAP_FA)
229 return 1;
230 /* Error on MLX4_CMD_HW2SW_MPT is fatal except when fw status equals
231 * CMD_STAT_REG_BOUND.
232 * This status indicates that memory region has memory windows bound to it
233 * which may result from invalid user space usage and is not fatal.
234 */
235 if (op == MLX4_CMD_HW2SW_MPT && fw_status != CMD_STAT_REG_BOUND)
236 return 1;
237 return 0;
238 }
239
240 static int mlx4_cmd_reset_flow(struct mlx4_dev *dev, u16 op, u8 op_modifier,
241 int err)
242 {
243 /* Only if reset flow is really active return code is based on
244 * command, otherwise current error code is returned.
245 */
246 if (mlx4_internal_err_reset) {
247 mlx4_enter_error_state(dev->persist);
248 err = mlx4_internal_err_ret_value(dev, op, op_modifier);
249 }
250
251 return err;
252 }
253
254 static int comm_pending(struct mlx4_dev *dev)
255 {
256 struct mlx4_priv *priv = mlx4_priv(dev);
257 u32 status = readl(&priv->mfunc.comm->slave_read);
258
259 return (swab32(status) >> 31) != priv->cmd.comm_toggle;
260 }
261
262 static int mlx4_comm_cmd_post(struct mlx4_dev *dev, u8 cmd, u16 param)
263 {
264 struct mlx4_priv *priv = mlx4_priv(dev);
265 u32 val;
266
267 /* To avoid writing to unknown addresses after the device state was
268 * changed to internal error and the function was rest,
269 * check the INTERNAL_ERROR flag which is updated under
270 * device_state_mutex lock.
271 */
272 mutex_lock(&dev->persist->device_state_mutex);
273
274 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) {
275 mutex_unlock(&dev->persist->device_state_mutex);
276 return -EIO;
277 }
278
279 priv->cmd.comm_toggle ^= 1;
280 val = param | (cmd << 16) | (priv->cmd.comm_toggle << 31);
281 __raw_writel((__force u32) cpu_to_be32(val),
282 &priv->mfunc.comm->slave_write);
283 mmiowb();
284 mutex_unlock(&dev->persist->device_state_mutex);
285 return 0;
286 }
287
288 static int mlx4_comm_cmd_poll(struct mlx4_dev *dev, u8 cmd, u16 param,
289 unsigned long timeout)
290 {
291 struct mlx4_priv *priv = mlx4_priv(dev);
292 unsigned long end;
293 int err = 0;
294 int ret_from_pending = 0;
295
296 /* First, verify that the master reports correct status */
297 if (comm_pending(dev)) {
298 mlx4_warn(dev, "Communication channel is not idle - my toggle is %d (cmd:0x%x)\n",
299 priv->cmd.comm_toggle, cmd);
300 return -EAGAIN;
301 }
302
303 /* Write command */
304 down(&priv->cmd.poll_sem);
305 if (mlx4_comm_cmd_post(dev, cmd, param)) {
306 /* Only in case the device state is INTERNAL_ERROR,
307 * mlx4_comm_cmd_post returns with an error
308 */
309 err = mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
310 goto out;
311 }
312
313 end = msecs_to_jiffies(timeout) + jiffies;
314 while (comm_pending(dev) && time_before(jiffies, end))
315 cond_resched();
316 ret_from_pending = comm_pending(dev);
317 if (ret_from_pending) {
318 /* check if the slave is trying to boot in the middle of
319 * FLR process. The only non-zero result in the RESET command
320 * is MLX4_DELAY_RESET_SLAVE*/
321 if ((MLX4_COMM_CMD_RESET == cmd)) {
322 err = MLX4_DELAY_RESET_SLAVE;
323 goto out;
324 } else {
325 mlx4_warn(dev, "Communication channel command 0x%x timed out\n",
326 cmd);
327 err = mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
328 }
329 }
330
331 if (err)
332 mlx4_enter_error_state(dev->persist);
333 out:
334 up(&priv->cmd.poll_sem);
335 return err;
336 }
337
338 static int mlx4_comm_cmd_wait(struct mlx4_dev *dev, u8 vhcr_cmd,
339 u16 param, u16 op, unsigned long timeout)
340 {
341 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
342 struct mlx4_cmd_context *context;
343 unsigned long end;
344 int err = 0;
345
346 down(&cmd->event_sem);
347
348 spin_lock(&cmd->context_lock);
349 BUG_ON(cmd->free_head < 0);
350 context = &cmd->context[cmd->free_head];
351 context->token += cmd->token_mask + 1;
352 cmd->free_head = context->next;
353 spin_unlock(&cmd->context_lock);
354
355 reinit_completion(&context->done);
356
357 if (mlx4_comm_cmd_post(dev, vhcr_cmd, param)) {
358 /* Only in case the device state is INTERNAL_ERROR,
359 * mlx4_comm_cmd_post returns with an error
360 */
361 err = mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
362 goto out;
363 }
364
365 if (!wait_for_completion_timeout(&context->done,
366 msecs_to_jiffies(timeout))) {
367 mlx4_warn(dev, "communication channel command 0x%x (op=0x%x) timed out\n",
368 vhcr_cmd, op);
369 goto out_reset;
370 }
371
372 err = context->result;
373 if (err && context->fw_status != CMD_STAT_MULTI_FUNC_REQ) {
374 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
375 vhcr_cmd, context->fw_status);
376 if (mlx4_closing_cmd_fatal_error(op, context->fw_status))
377 goto out_reset;
378 }
379
380 /* wait for comm channel ready
381 * this is necessary for prevention the race
382 * when switching between event to polling mode
383 * Skipping this section in case the device is in FATAL_ERROR state,
384 * In this state, no commands are sent via the comm channel until
385 * the device has returned from reset.
386 */
387 if (!(dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)) {
388 end = msecs_to_jiffies(timeout) + jiffies;
389 while (comm_pending(dev) && time_before(jiffies, end))
390 cond_resched();
391 }
392 goto out;
393
394 out_reset:
395 err = mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
396 mlx4_enter_error_state(dev->persist);
397 out:
398 spin_lock(&cmd->context_lock);
399 context->next = cmd->free_head;
400 cmd->free_head = context - cmd->context;
401 spin_unlock(&cmd->context_lock);
402
403 up(&cmd->event_sem);
404 return err;
405 }
406
407 int mlx4_comm_cmd(struct mlx4_dev *dev, u8 cmd, u16 param,
408 u16 op, unsigned long timeout)
409 {
410 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
411 return mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
412
413 if (mlx4_priv(dev)->cmd.use_events)
414 return mlx4_comm_cmd_wait(dev, cmd, param, op, timeout);
415 return mlx4_comm_cmd_poll(dev, cmd, param, timeout);
416 }
417
418 static int cmd_pending(struct mlx4_dev *dev)
419 {
420 u32 status;
421
422 if (pci_channel_offline(dev->persist->pdev))
423 return -EIO;
424
425 status = readl(mlx4_priv(dev)->cmd.hcr + HCR_STATUS_OFFSET);
426
427 return (status & swab32(1 << HCR_GO_BIT)) ||
428 (mlx4_priv(dev)->cmd.toggle ==
429 !!(status & swab32(1 << HCR_T_BIT)));
430 }
431
432 static int mlx4_cmd_post(struct mlx4_dev *dev, u64 in_param, u64 out_param,
433 u32 in_modifier, u8 op_modifier, u16 op, u16 token,
434 int event)
435 {
436 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
437 u32 __iomem *hcr = cmd->hcr;
438 int ret = -EIO;
439 unsigned long end;
440
441 mutex_lock(&dev->persist->device_state_mutex);
442 /* To avoid writing to unknown addresses after the device state was
443 * changed to internal error and the chip was reset,
444 * check the INTERNAL_ERROR flag which is updated under
445 * device_state_mutex lock.
446 */
447 if (pci_channel_offline(dev->persist->pdev) ||
448 (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)) {
449 /*
450 * Device is going through error recovery
451 * and cannot accept commands.
452 */
453 goto out;
454 }
455
456 end = jiffies;
457 if (event)
458 end += msecs_to_jiffies(GO_BIT_TIMEOUT_MSECS);
459
460 while (cmd_pending(dev)) {
461 if (pci_channel_offline(dev->persist->pdev)) {
462 /*
463 * Device is going through error recovery
464 * and cannot accept commands.
465 */
466 goto out;
467 }
468
469 if (time_after_eq(jiffies, end)) {
470 mlx4_err(dev, "%s:cmd_pending failed\n", __func__);
471 goto out;
472 }
473 cond_resched();
474 }
475
476 /*
477 * We use writel (instead of something like memcpy_toio)
478 * because writes of less than 32 bits to the HCR don't work
479 * (and some architectures such as ia64 implement memcpy_toio
480 * in terms of writeb).
481 */
482 __raw_writel((__force u32) cpu_to_be32(in_param >> 32), hcr + 0);
483 __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful), hcr + 1);
484 __raw_writel((__force u32) cpu_to_be32(in_modifier), hcr + 2);
485 __raw_writel((__force u32) cpu_to_be32(out_param >> 32), hcr + 3);
486 __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), hcr + 4);
487 __raw_writel((__force u32) cpu_to_be32(token << 16), hcr + 5);
488
489 /* __raw_writel may not order writes. */
490 wmb();
491
492 __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT) |
493 (cmd->toggle << HCR_T_BIT) |
494 (event ? (1 << HCR_E_BIT) : 0) |
495 (op_modifier << HCR_OPMOD_SHIFT) |
496 op), hcr + 6);
497
498 /*
499 * Make sure that our HCR writes don't get mixed in with
500 * writes from another CPU starting a FW command.
501 */
502 mmiowb();
503
504 cmd->toggle = cmd->toggle ^ 1;
505
506 ret = 0;
507
508 out:
509 if (ret)
510 mlx4_warn(dev, "Could not post command 0x%x: ret=%d, in_param=0x%llx, in_mod=0x%x, op_mod=0x%x\n",
511 op, ret, in_param, in_modifier, op_modifier);
512 mutex_unlock(&dev->persist->device_state_mutex);
513
514 return ret;
515 }
516
517 static int mlx4_slave_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
518 int out_is_imm, u32 in_modifier, u8 op_modifier,
519 u16 op, unsigned long timeout)
520 {
521 struct mlx4_priv *priv = mlx4_priv(dev);
522 struct mlx4_vhcr_cmd *vhcr = priv->mfunc.vhcr;
523 int ret;
524
525 mutex_lock(&priv->cmd.slave_cmd_mutex);
526
527 vhcr->in_param = cpu_to_be64(in_param);
528 vhcr->out_param = out_param ? cpu_to_be64(*out_param) : 0;
529 vhcr->in_modifier = cpu_to_be32(in_modifier);
530 vhcr->opcode = cpu_to_be16((((u16) op_modifier) << 12) | (op & 0xfff));
531 vhcr->token = cpu_to_be16(CMD_POLL_TOKEN);
532 vhcr->status = 0;
533 vhcr->flags = !!(priv->cmd.use_events) << 6;
534
535 if (mlx4_is_master(dev)) {
536 ret = mlx4_master_process_vhcr(dev, dev->caps.function, vhcr);
537 if (!ret) {
538 if (out_is_imm) {
539 if (out_param)
540 *out_param =
541 be64_to_cpu(vhcr->out_param);
542 else {
543 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
544 op);
545 vhcr->status = CMD_STAT_BAD_PARAM;
546 }
547 }
548 ret = mlx4_status_to_errno(vhcr->status);
549 }
550 if (ret &&
551 dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
552 ret = mlx4_internal_err_ret_value(dev, op, op_modifier);
553 } else {
554 ret = mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_POST, 0, op,
555 MLX4_COMM_TIME + timeout);
556 if (!ret) {
557 if (out_is_imm) {
558 if (out_param)
559 *out_param =
560 be64_to_cpu(vhcr->out_param);
561 else {
562 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
563 op);
564 vhcr->status = CMD_STAT_BAD_PARAM;
565 }
566 }
567 ret = mlx4_status_to_errno(vhcr->status);
568 } else {
569 if (dev->persist->state &
570 MLX4_DEVICE_STATE_INTERNAL_ERROR)
571 ret = mlx4_internal_err_ret_value(dev, op,
572 op_modifier);
573 else
574 mlx4_err(dev, "failed execution of VHCR_POST command opcode 0x%x\n", op);
575 }
576 }
577
578 mutex_unlock(&priv->cmd.slave_cmd_mutex);
579 return ret;
580 }
581
582 static int mlx4_cmd_poll(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
583 int out_is_imm, u32 in_modifier, u8 op_modifier,
584 u16 op, unsigned long timeout)
585 {
586 struct mlx4_priv *priv = mlx4_priv(dev);
587 void __iomem *hcr = priv->cmd.hcr;
588 int err = 0;
589 unsigned long end;
590 u32 stat;
591
592 down(&priv->cmd.poll_sem);
593
594 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) {
595 /*
596 * Device is going through error recovery
597 * and cannot accept commands.
598 */
599 err = mlx4_internal_err_ret_value(dev, op, op_modifier);
600 goto out;
601 }
602
603 if (out_is_imm && !out_param) {
604 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
605 op);
606 err = -EINVAL;
607 goto out;
608 }
609
610 err = mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
611 in_modifier, op_modifier, op, CMD_POLL_TOKEN, 0);
612 if (err)
613 goto out_reset;
614
615 end = msecs_to_jiffies(timeout) + jiffies;
616 while (cmd_pending(dev) && time_before(jiffies, end)) {
617 if (pci_channel_offline(dev->persist->pdev)) {
618 /*
619 * Device is going through error recovery
620 * and cannot accept commands.
621 */
622 err = -EIO;
623 goto out_reset;
624 }
625
626 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) {
627 err = mlx4_internal_err_ret_value(dev, op, op_modifier);
628 goto out;
629 }
630
631 cond_resched();
632 }
633
634 if (cmd_pending(dev)) {
635 mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
636 op);
637 err = -EIO;
638 goto out_reset;
639 }
640
641 if (out_is_imm)
642 *out_param =
643 (u64) be32_to_cpu((__force __be32)
644 __raw_readl(hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
645 (u64) be32_to_cpu((__force __be32)
646 __raw_readl(hcr + HCR_OUT_PARAM_OFFSET + 4));
647 stat = be32_to_cpu((__force __be32)
648 __raw_readl(hcr + HCR_STATUS_OFFSET)) >> 24;
649 err = mlx4_status_to_errno(stat);
650 if (err) {
651 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
652 op, stat);
653 if (mlx4_closing_cmd_fatal_error(op, stat))
654 goto out_reset;
655 goto out;
656 }
657
658 out_reset:
659 if (err)
660 err = mlx4_cmd_reset_flow(dev, op, op_modifier, err);
661 out:
662 up(&priv->cmd.poll_sem);
663 return err;
664 }
665
666 void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param)
667 {
668 struct mlx4_priv *priv = mlx4_priv(dev);
669 struct mlx4_cmd_context *context =
670 &priv->cmd.context[token & priv->cmd.token_mask];
671
672 /* previously timed out command completing at long last */
673 if (token != context->token)
674 return;
675
676 context->fw_status = status;
677 context->result = mlx4_status_to_errno(status);
678 context->out_param = out_param;
679
680 complete(&context->done);
681 }
682
683 static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
684 int out_is_imm, u32 in_modifier, u8 op_modifier,
685 u16 op, unsigned long timeout)
686 {
687 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
688 struct mlx4_cmd_context *context;
689 long ret_wait;
690 int err = 0;
691
692 down(&cmd->event_sem);
693
694 spin_lock(&cmd->context_lock);
695 BUG_ON(cmd->free_head < 0);
696 context = &cmd->context[cmd->free_head];
697 context->token += cmd->token_mask + 1;
698 cmd->free_head = context->next;
699 spin_unlock(&cmd->context_lock);
700
701 if (out_is_imm && !out_param) {
702 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
703 op);
704 err = -EINVAL;
705 goto out;
706 }
707
708 reinit_completion(&context->done);
709
710 err = mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
711 in_modifier, op_modifier, op, context->token, 1);
712 if (err)
713 goto out_reset;
714
715 if (op == MLX4_CMD_SENSE_PORT) {
716 ret_wait =
717 wait_for_completion_interruptible_timeout(&context->done,
718 msecs_to_jiffies(timeout));
719 if (ret_wait < 0) {
720 context->fw_status = 0;
721 context->out_param = 0;
722 context->result = 0;
723 }
724 } else {
725 ret_wait = (long)wait_for_completion_timeout(&context->done,
726 msecs_to_jiffies(timeout));
727 }
728 if (!ret_wait) {
729 mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
730 op);
731 if (op == MLX4_CMD_NOP) {
732 err = -EBUSY;
733 goto out;
734 } else {
735 err = -EIO;
736 goto out_reset;
737 }
738 }
739
740 err = context->result;
741 if (err) {
742 /* Since we do not want to have this error message always
743 * displayed at driver start when there are ConnectX2 HCAs
744 * on the host, we deprecate the error message for this
745 * specific command/input_mod/opcode_mod/fw-status to be debug.
746 */
747 if (op == MLX4_CMD_SET_PORT &&
748 (in_modifier == 1 || in_modifier == 2) &&
749 op_modifier == MLX4_SET_PORT_IB_OPCODE &&
750 context->fw_status == CMD_STAT_BAD_SIZE)
751 mlx4_dbg(dev, "command 0x%x failed: fw status = 0x%x\n",
752 op, context->fw_status);
753 else
754 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
755 op, context->fw_status);
756 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
757 err = mlx4_internal_err_ret_value(dev, op, op_modifier);
758 else if (mlx4_closing_cmd_fatal_error(op, context->fw_status))
759 goto out_reset;
760
761 goto out;
762 }
763
764 if (out_is_imm)
765 *out_param = context->out_param;
766
767 out_reset:
768 if (err)
769 err = mlx4_cmd_reset_flow(dev, op, op_modifier, err);
770 out:
771 spin_lock(&cmd->context_lock);
772 context->next = cmd->free_head;
773 cmd->free_head = context - cmd->context;
774 spin_unlock(&cmd->context_lock);
775
776 up(&cmd->event_sem);
777 return err;
778 }
779
780 int __mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
781 int out_is_imm, u32 in_modifier, u8 op_modifier,
782 u16 op, unsigned long timeout, int native)
783 {
784 if (pci_channel_offline(dev->persist->pdev))
785 return mlx4_cmd_reset_flow(dev, op, op_modifier, -EIO);
786
787 if (!mlx4_is_mfunc(dev) || (native && mlx4_is_master(dev))) {
788 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
789 return mlx4_internal_err_ret_value(dev, op,
790 op_modifier);
791 if (mlx4_priv(dev)->cmd.use_events)
792 return mlx4_cmd_wait(dev, in_param, out_param,
793 out_is_imm, in_modifier,
794 op_modifier, op, timeout);
795 else
796 return mlx4_cmd_poll(dev, in_param, out_param,
797 out_is_imm, in_modifier,
798 op_modifier, op, timeout);
799 }
800 return mlx4_slave_cmd(dev, in_param, out_param, out_is_imm,
801 in_modifier, op_modifier, op, timeout);
802 }
803 EXPORT_SYMBOL_GPL(__mlx4_cmd);
804
805
806 int mlx4_ARM_COMM_CHANNEL(struct mlx4_dev *dev)
807 {
808 return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_ARM_COMM_CHANNEL,
809 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
810 }
811
812 static int mlx4_ACCESS_MEM(struct mlx4_dev *dev, u64 master_addr,
813 int slave, u64 slave_addr,
814 int size, int is_read)
815 {
816 u64 in_param;
817 u64 out_param;
818
819 if ((slave_addr & 0xfff) | (master_addr & 0xfff) |
820 (slave & ~0x7f) | (size & 0xff)) {
821 mlx4_err(dev, "Bad access mem params - slave_addr:0x%llx master_addr:0x%llx slave_id:%d size:%d\n",
822 slave_addr, master_addr, slave, size);
823 return -EINVAL;
824 }
825
826 if (is_read) {
827 in_param = (u64) slave | slave_addr;
828 out_param = (u64) dev->caps.function | master_addr;
829 } else {
830 in_param = (u64) dev->caps.function | master_addr;
831 out_param = (u64) slave | slave_addr;
832 }
833
834 return mlx4_cmd_imm(dev, in_param, &out_param, size, 0,
835 MLX4_CMD_ACCESS_MEM,
836 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
837 }
838
839 static int query_pkey_block(struct mlx4_dev *dev, u8 port, u16 index, u16 *pkey,
840 struct mlx4_cmd_mailbox *inbox,
841 struct mlx4_cmd_mailbox *outbox)
842 {
843 struct ib_smp *in_mad = (struct ib_smp *)(inbox->buf);
844 struct ib_smp *out_mad = (struct ib_smp *)(outbox->buf);
845 int err;
846 int i;
847
848 if (index & 0x1f)
849 return -EINVAL;
850
851 in_mad->attr_mod = cpu_to_be32(index / 32);
852
853 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
854 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
855 MLX4_CMD_NATIVE);
856 if (err)
857 return err;
858
859 for (i = 0; i < 32; ++i)
860 pkey[i] = be16_to_cpu(((__be16 *) out_mad->data)[i]);
861
862 return err;
863 }
864
865 static int get_full_pkey_table(struct mlx4_dev *dev, u8 port, u16 *table,
866 struct mlx4_cmd_mailbox *inbox,
867 struct mlx4_cmd_mailbox *outbox)
868 {
869 int i;
870 int err;
871
872 for (i = 0; i < dev->caps.pkey_table_len[port]; i += 32) {
873 err = query_pkey_block(dev, port, i, table + i, inbox, outbox);
874 if (err)
875 return err;
876 }
877
878 return 0;
879 }
880 #define PORT_CAPABILITY_LOCATION_IN_SMP 20
881 #define PORT_STATE_OFFSET 32
882
883 static enum ib_port_state vf_port_state(struct mlx4_dev *dev, int port, int vf)
884 {
885 if (mlx4_get_slave_port_state(dev, vf, port) == SLAVE_PORT_UP)
886 return IB_PORT_ACTIVE;
887 else
888 return IB_PORT_DOWN;
889 }
890
891 static int mlx4_MAD_IFC_wrapper(struct mlx4_dev *dev, int slave,
892 struct mlx4_vhcr *vhcr,
893 struct mlx4_cmd_mailbox *inbox,
894 struct mlx4_cmd_mailbox *outbox,
895 struct mlx4_cmd_info *cmd)
896 {
897 struct ib_smp *smp = inbox->buf;
898 u32 index;
899 u8 port, slave_port;
900 u8 opcode_modifier;
901 u16 *table;
902 int err;
903 int vidx, pidx;
904 int network_view;
905 struct mlx4_priv *priv = mlx4_priv(dev);
906 struct ib_smp *outsmp = outbox->buf;
907 __be16 *outtab = (__be16 *)(outsmp->data);
908 __be32 slave_cap_mask;
909 __be64 slave_node_guid;
910
911 slave_port = vhcr->in_modifier;
912 port = mlx4_slave_convert_port(dev, slave, slave_port);
913
914 /* network-view bit is for driver use only, and should not be passed to FW */
915 opcode_modifier = vhcr->op_modifier & ~0x8; /* clear netw view bit */
916 network_view = !!(vhcr->op_modifier & 0x8);
917
918 if (smp->base_version == 1 &&
919 smp->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED &&
920 smp->class_version == 1) {
921 /* host view is paravirtualized */
922 if (!network_view && smp->method == IB_MGMT_METHOD_GET) {
923 if (smp->attr_id == IB_SMP_ATTR_PKEY_TABLE) {
924 index = be32_to_cpu(smp->attr_mod);
925 if (port < 1 || port > dev->caps.num_ports)
926 return -EINVAL;
927 table = kcalloc((dev->caps.pkey_table_len[port] / 32) + 1,
928 sizeof(*table) * 32, GFP_KERNEL);
929
930 if (!table)
931 return -ENOMEM;
932 /* need to get the full pkey table because the paravirtualized
933 * pkeys may be scattered among several pkey blocks.
934 */
935 err = get_full_pkey_table(dev, port, table, inbox, outbox);
936 if (!err) {
937 for (vidx = index * 32; vidx < (index + 1) * 32; ++vidx) {
938 pidx = priv->virt2phys_pkey[slave][port - 1][vidx];
939 outtab[vidx % 32] = cpu_to_be16(table[pidx]);
940 }
941 }
942 kfree(table);
943 return err;
944 }
945 if (smp->attr_id == IB_SMP_ATTR_PORT_INFO) {
946 /*get the slave specific caps:*/
947 /*do the command */
948 smp->attr_mod = cpu_to_be32(port);
949 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
950 port, opcode_modifier,
951 vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
952 /* modify the response for slaves */
953 if (!err && slave != mlx4_master_func_num(dev)) {
954 u8 *state = outsmp->data + PORT_STATE_OFFSET;
955
956 *state = (*state & 0xf0) | vf_port_state(dev, port, slave);
957 slave_cap_mask = priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
958 memcpy(outsmp->data + PORT_CAPABILITY_LOCATION_IN_SMP, &slave_cap_mask, 4);
959 }
960 return err;
961 }
962 if (smp->attr_id == IB_SMP_ATTR_GUID_INFO) {
963 __be64 guid = mlx4_get_admin_guid(dev, slave,
964 port);
965
966 /* set the PF admin guid to the FW/HW burned
967 * GUID, if it wasn't yet set
968 */
969 if (slave == 0 && guid == 0) {
970 smp->attr_mod = 0;
971 err = mlx4_cmd_box(dev,
972 inbox->dma,
973 outbox->dma,
974 vhcr->in_modifier,
975 opcode_modifier,
976 vhcr->op,
977 MLX4_CMD_TIME_CLASS_C,
978 MLX4_CMD_NATIVE);
979 if (err)
980 return err;
981 mlx4_set_admin_guid(dev,
982 *(__be64 *)outsmp->
983 data, slave, port);
984 } else {
985 memcpy(outsmp->data, &guid, 8);
986 }
987
988 /* clean all other gids */
989 memset(outsmp->data + 8, 0, 56);
990 return 0;
991 }
992 if (smp->attr_id == IB_SMP_ATTR_NODE_INFO) {
993 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
994 port, opcode_modifier,
995 vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
996 if (!err) {
997 slave_node_guid = mlx4_get_slave_node_guid(dev, slave);
998 memcpy(outsmp->data + 12, &slave_node_guid, 8);
999 }
1000 return err;
1001 }
1002 }
1003 }
1004
1005 /* Non-privileged VFs are only allowed "host" view LID-routed 'Get' MADs.
1006 * These are the MADs used by ib verbs (such as ib_query_gids).
1007 */
1008 if (slave != mlx4_master_func_num(dev) &&
1009 !mlx4_vf_smi_enabled(dev, slave, port)) {
1010 if (!(smp->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED &&
1011 smp->method == IB_MGMT_METHOD_GET) || network_view) {
1012 mlx4_err(dev, "Unprivileged slave %d is trying to execute a Subnet MGMT MAD, class 0x%x, method 0x%x, view=%s for attr 0x%x. Rejecting\n",
1013 slave, smp->mgmt_class, smp->method,
1014 network_view ? "Network" : "Host",
1015 be16_to_cpu(smp->attr_id));
1016 return -EPERM;
1017 }
1018 }
1019
1020 return mlx4_cmd_box(dev, inbox->dma, outbox->dma,
1021 vhcr->in_modifier, opcode_modifier,
1022 vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
1023 }
1024
1025 static int mlx4_CMD_EPERM_wrapper(struct mlx4_dev *dev, int slave,
1026 struct mlx4_vhcr *vhcr,
1027 struct mlx4_cmd_mailbox *inbox,
1028 struct mlx4_cmd_mailbox *outbox,
1029 struct mlx4_cmd_info *cmd)
1030 {
1031 return -EPERM;
1032 }
1033
1034 int mlx4_DMA_wrapper(struct mlx4_dev *dev, int slave,
1035 struct mlx4_vhcr *vhcr,
1036 struct mlx4_cmd_mailbox *inbox,
1037 struct mlx4_cmd_mailbox *outbox,
1038 struct mlx4_cmd_info *cmd)
1039 {
1040 u64 in_param;
1041 u64 out_param;
1042 int err;
1043
1044 in_param = cmd->has_inbox ? (u64) inbox->dma : vhcr->in_param;
1045 out_param = cmd->has_outbox ? (u64) outbox->dma : vhcr->out_param;
1046 if (cmd->encode_slave_id) {
1047 in_param &= 0xffffffffffffff00ll;
1048 in_param |= slave;
1049 }
1050
1051 err = __mlx4_cmd(dev, in_param, &out_param, cmd->out_is_imm,
1052 vhcr->in_modifier, vhcr->op_modifier, vhcr->op,
1053 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
1054
1055 if (cmd->out_is_imm)
1056 vhcr->out_param = out_param;
1057
1058 return err;
1059 }
1060
1061 static struct mlx4_cmd_info cmd_info[] = {
1062 {
1063 .opcode = MLX4_CMD_QUERY_FW,
1064 .has_inbox = false,
1065 .has_outbox = true,
1066 .out_is_imm = false,
1067 .encode_slave_id = false,
1068 .verify = NULL,
1069 .wrapper = mlx4_QUERY_FW_wrapper
1070 },
1071 {
1072 .opcode = MLX4_CMD_QUERY_HCA,
1073 .has_inbox = false,
1074 .has_outbox = true,
1075 .out_is_imm = false,
1076 .encode_slave_id = false,
1077 .verify = NULL,
1078 .wrapper = NULL
1079 },
1080 {
1081 .opcode = MLX4_CMD_QUERY_DEV_CAP,
1082 .has_inbox = false,
1083 .has_outbox = true,
1084 .out_is_imm = false,
1085 .encode_slave_id = false,
1086 .verify = NULL,
1087 .wrapper = mlx4_QUERY_DEV_CAP_wrapper
1088 },
1089 {
1090 .opcode = MLX4_CMD_QUERY_FUNC_CAP,
1091 .has_inbox = false,
1092 .has_outbox = true,
1093 .out_is_imm = false,
1094 .encode_slave_id = false,
1095 .verify = NULL,
1096 .wrapper = mlx4_QUERY_FUNC_CAP_wrapper
1097 },
1098 {
1099 .opcode = MLX4_CMD_QUERY_ADAPTER,
1100 .has_inbox = false,
1101 .has_outbox = true,
1102 .out_is_imm = false,
1103 .encode_slave_id = false,
1104 .verify = NULL,
1105 .wrapper = NULL
1106 },
1107 {
1108 .opcode = MLX4_CMD_INIT_PORT,
1109 .has_inbox = false,
1110 .has_outbox = false,
1111 .out_is_imm = false,
1112 .encode_slave_id = false,
1113 .verify = NULL,
1114 .wrapper = mlx4_INIT_PORT_wrapper
1115 },
1116 {
1117 .opcode = MLX4_CMD_CLOSE_PORT,
1118 .has_inbox = false,
1119 .has_outbox = false,
1120 .out_is_imm = false,
1121 .encode_slave_id = false,
1122 .verify = NULL,
1123 .wrapper = mlx4_CLOSE_PORT_wrapper
1124 },
1125 {
1126 .opcode = MLX4_CMD_QUERY_PORT,
1127 .has_inbox = false,
1128 .has_outbox = true,
1129 .out_is_imm = false,
1130 .encode_slave_id = false,
1131 .verify = NULL,
1132 .wrapper = mlx4_QUERY_PORT_wrapper
1133 },
1134 {
1135 .opcode = MLX4_CMD_SET_PORT,
1136 .has_inbox = true,
1137 .has_outbox = false,
1138 .out_is_imm = false,
1139 .encode_slave_id = false,
1140 .verify = NULL,
1141 .wrapper = mlx4_SET_PORT_wrapper
1142 },
1143 {
1144 .opcode = MLX4_CMD_MAP_EQ,
1145 .has_inbox = false,
1146 .has_outbox = false,
1147 .out_is_imm = false,
1148 .encode_slave_id = false,
1149 .verify = NULL,
1150 .wrapper = mlx4_MAP_EQ_wrapper
1151 },
1152 {
1153 .opcode = MLX4_CMD_SW2HW_EQ,
1154 .has_inbox = true,
1155 .has_outbox = false,
1156 .out_is_imm = false,
1157 .encode_slave_id = true,
1158 .verify = NULL,
1159 .wrapper = mlx4_SW2HW_EQ_wrapper
1160 },
1161 {
1162 .opcode = MLX4_CMD_HW_HEALTH_CHECK,
1163 .has_inbox = false,
1164 .has_outbox = false,
1165 .out_is_imm = false,
1166 .encode_slave_id = false,
1167 .verify = NULL,
1168 .wrapper = NULL
1169 },
1170 {
1171 .opcode = MLX4_CMD_NOP,
1172 .has_inbox = false,
1173 .has_outbox = false,
1174 .out_is_imm = false,
1175 .encode_slave_id = false,
1176 .verify = NULL,
1177 .wrapper = NULL
1178 },
1179 {
1180 .opcode = MLX4_CMD_CONFIG_DEV,
1181 .has_inbox = false,
1182 .has_outbox = true,
1183 .out_is_imm = false,
1184 .encode_slave_id = false,
1185 .verify = NULL,
1186 .wrapper = mlx4_CONFIG_DEV_wrapper
1187 },
1188 {
1189 .opcode = MLX4_CMD_ALLOC_RES,
1190 .has_inbox = false,
1191 .has_outbox = false,
1192 .out_is_imm = true,
1193 .encode_slave_id = false,
1194 .verify = NULL,
1195 .wrapper = mlx4_ALLOC_RES_wrapper
1196 },
1197 {
1198 .opcode = MLX4_CMD_FREE_RES,
1199 .has_inbox = false,
1200 .has_outbox = false,
1201 .out_is_imm = false,
1202 .encode_slave_id = false,
1203 .verify = NULL,
1204 .wrapper = mlx4_FREE_RES_wrapper
1205 },
1206 {
1207 .opcode = MLX4_CMD_SW2HW_MPT,
1208 .has_inbox = true,
1209 .has_outbox = false,
1210 .out_is_imm = false,
1211 .encode_slave_id = true,
1212 .verify = NULL,
1213 .wrapper = mlx4_SW2HW_MPT_wrapper
1214 },
1215 {
1216 .opcode = MLX4_CMD_QUERY_MPT,
1217 .has_inbox = false,
1218 .has_outbox = true,
1219 .out_is_imm = false,
1220 .encode_slave_id = false,
1221 .verify = NULL,
1222 .wrapper = mlx4_QUERY_MPT_wrapper
1223 },
1224 {
1225 .opcode = MLX4_CMD_HW2SW_MPT,
1226 .has_inbox = false,
1227 .has_outbox = false,
1228 .out_is_imm = false,
1229 .encode_slave_id = false,
1230 .verify = NULL,
1231 .wrapper = mlx4_HW2SW_MPT_wrapper
1232 },
1233 {
1234 .opcode = MLX4_CMD_READ_MTT,
1235 .has_inbox = false,
1236 .has_outbox = true,
1237 .out_is_imm = false,
1238 .encode_slave_id = false,
1239 .verify = NULL,
1240 .wrapper = NULL
1241 },
1242 {
1243 .opcode = MLX4_CMD_WRITE_MTT,
1244 .has_inbox = true,
1245 .has_outbox = false,
1246 .out_is_imm = false,
1247 .encode_slave_id = false,
1248 .verify = NULL,
1249 .wrapper = mlx4_WRITE_MTT_wrapper
1250 },
1251 {
1252 .opcode = MLX4_CMD_SYNC_TPT,
1253 .has_inbox = true,
1254 .has_outbox = false,
1255 .out_is_imm = false,
1256 .encode_slave_id = false,
1257 .verify = NULL,
1258 .wrapper = NULL
1259 },
1260 {
1261 .opcode = MLX4_CMD_HW2SW_EQ,
1262 .has_inbox = false,
1263 .has_outbox = false,
1264 .out_is_imm = false,
1265 .encode_slave_id = true,
1266 .verify = NULL,
1267 .wrapper = mlx4_HW2SW_EQ_wrapper
1268 },
1269 {
1270 .opcode = MLX4_CMD_QUERY_EQ,
1271 .has_inbox = false,
1272 .has_outbox = true,
1273 .out_is_imm = false,
1274 .encode_slave_id = true,
1275 .verify = NULL,
1276 .wrapper = mlx4_QUERY_EQ_wrapper
1277 },
1278 {
1279 .opcode = MLX4_CMD_SW2HW_CQ,
1280 .has_inbox = true,
1281 .has_outbox = false,
1282 .out_is_imm = false,
1283 .encode_slave_id = true,
1284 .verify = NULL,
1285 .wrapper = mlx4_SW2HW_CQ_wrapper
1286 },
1287 {
1288 .opcode = MLX4_CMD_HW2SW_CQ,
1289 .has_inbox = false,
1290 .has_outbox = false,
1291 .out_is_imm = false,
1292 .encode_slave_id = false,
1293 .verify = NULL,
1294 .wrapper = mlx4_HW2SW_CQ_wrapper
1295 },
1296 {
1297 .opcode = MLX4_CMD_QUERY_CQ,
1298 .has_inbox = false,
1299 .has_outbox = true,
1300 .out_is_imm = false,
1301 .encode_slave_id = false,
1302 .verify = NULL,
1303 .wrapper = mlx4_QUERY_CQ_wrapper
1304 },
1305 {
1306 .opcode = MLX4_CMD_MODIFY_CQ,
1307 .has_inbox = true,
1308 .has_outbox = false,
1309 .out_is_imm = true,
1310 .encode_slave_id = false,
1311 .verify = NULL,
1312 .wrapper = mlx4_MODIFY_CQ_wrapper
1313 },
1314 {
1315 .opcode = MLX4_CMD_SW2HW_SRQ,
1316 .has_inbox = true,
1317 .has_outbox = false,
1318 .out_is_imm = false,
1319 .encode_slave_id = true,
1320 .verify = NULL,
1321 .wrapper = mlx4_SW2HW_SRQ_wrapper
1322 },
1323 {
1324 .opcode = MLX4_CMD_HW2SW_SRQ,
1325 .has_inbox = false,
1326 .has_outbox = false,
1327 .out_is_imm = false,
1328 .encode_slave_id = false,
1329 .verify = NULL,
1330 .wrapper = mlx4_HW2SW_SRQ_wrapper
1331 },
1332 {
1333 .opcode = MLX4_CMD_QUERY_SRQ,
1334 .has_inbox = false,
1335 .has_outbox = true,
1336 .out_is_imm = false,
1337 .encode_slave_id = false,
1338 .verify = NULL,
1339 .wrapper = mlx4_QUERY_SRQ_wrapper
1340 },
1341 {
1342 .opcode = MLX4_CMD_ARM_SRQ,
1343 .has_inbox = false,
1344 .has_outbox = false,
1345 .out_is_imm = false,
1346 .encode_slave_id = false,
1347 .verify = NULL,
1348 .wrapper = mlx4_ARM_SRQ_wrapper
1349 },
1350 {
1351 .opcode = MLX4_CMD_RST2INIT_QP,
1352 .has_inbox = true,
1353 .has_outbox = false,
1354 .out_is_imm = false,
1355 .encode_slave_id = true,
1356 .verify = NULL,
1357 .wrapper = mlx4_RST2INIT_QP_wrapper
1358 },
1359 {
1360 .opcode = MLX4_CMD_INIT2INIT_QP,
1361 .has_inbox = true,
1362 .has_outbox = false,
1363 .out_is_imm = false,
1364 .encode_slave_id = false,
1365 .verify = NULL,
1366 .wrapper = mlx4_INIT2INIT_QP_wrapper
1367 },
1368 {
1369 .opcode = MLX4_CMD_INIT2RTR_QP,
1370 .has_inbox = true,
1371 .has_outbox = false,
1372 .out_is_imm = false,
1373 .encode_slave_id = false,
1374 .verify = NULL,
1375 .wrapper = mlx4_INIT2RTR_QP_wrapper
1376 },
1377 {
1378 .opcode = MLX4_CMD_RTR2RTS_QP,
1379 .has_inbox = true,
1380 .has_outbox = false,
1381 .out_is_imm = false,
1382 .encode_slave_id = false,
1383 .verify = NULL,
1384 .wrapper = mlx4_RTR2RTS_QP_wrapper
1385 },
1386 {
1387 .opcode = MLX4_CMD_RTS2RTS_QP,
1388 .has_inbox = true,
1389 .has_outbox = false,
1390 .out_is_imm = false,
1391 .encode_slave_id = false,
1392 .verify = NULL,
1393 .wrapper = mlx4_RTS2RTS_QP_wrapper
1394 },
1395 {
1396 .opcode = MLX4_CMD_SQERR2RTS_QP,
1397 .has_inbox = true,
1398 .has_outbox = false,
1399 .out_is_imm = false,
1400 .encode_slave_id = false,
1401 .verify = NULL,
1402 .wrapper = mlx4_SQERR2RTS_QP_wrapper
1403 },
1404 {
1405 .opcode = MLX4_CMD_2ERR_QP,
1406 .has_inbox = false,
1407 .has_outbox = false,
1408 .out_is_imm = false,
1409 .encode_slave_id = false,
1410 .verify = NULL,
1411 .wrapper = mlx4_GEN_QP_wrapper
1412 },
1413 {
1414 .opcode = MLX4_CMD_RTS2SQD_QP,
1415 .has_inbox = false,
1416 .has_outbox = false,
1417 .out_is_imm = false,
1418 .encode_slave_id = false,
1419 .verify = NULL,
1420 .wrapper = mlx4_GEN_QP_wrapper
1421 },
1422 {
1423 .opcode = MLX4_CMD_SQD2SQD_QP,
1424 .has_inbox = true,
1425 .has_outbox = false,
1426 .out_is_imm = false,
1427 .encode_slave_id = false,
1428 .verify = NULL,
1429 .wrapper = mlx4_SQD2SQD_QP_wrapper
1430 },
1431 {
1432 .opcode = MLX4_CMD_SQD2RTS_QP,
1433 .has_inbox = true,
1434 .has_outbox = false,
1435 .out_is_imm = false,
1436 .encode_slave_id = false,
1437 .verify = NULL,
1438 .wrapper = mlx4_SQD2RTS_QP_wrapper
1439 },
1440 {
1441 .opcode = MLX4_CMD_2RST_QP,
1442 .has_inbox = false,
1443 .has_outbox = false,
1444 .out_is_imm = false,
1445 .encode_slave_id = false,
1446 .verify = NULL,
1447 .wrapper = mlx4_2RST_QP_wrapper
1448 },
1449 {
1450 .opcode = MLX4_CMD_QUERY_QP,
1451 .has_inbox = false,
1452 .has_outbox = true,
1453 .out_is_imm = false,
1454 .encode_slave_id = false,
1455 .verify = NULL,
1456 .wrapper = mlx4_GEN_QP_wrapper
1457 },
1458 {
1459 .opcode = MLX4_CMD_SUSPEND_QP,
1460 .has_inbox = false,
1461 .has_outbox = false,
1462 .out_is_imm = false,
1463 .encode_slave_id = false,
1464 .verify = NULL,
1465 .wrapper = mlx4_GEN_QP_wrapper
1466 },
1467 {
1468 .opcode = MLX4_CMD_UNSUSPEND_QP,
1469 .has_inbox = false,
1470 .has_outbox = false,
1471 .out_is_imm = false,
1472 .encode_slave_id = false,
1473 .verify = NULL,
1474 .wrapper = mlx4_GEN_QP_wrapper
1475 },
1476 {
1477 .opcode = MLX4_CMD_UPDATE_QP,
1478 .has_inbox = true,
1479 .has_outbox = false,
1480 .out_is_imm = false,
1481 .encode_slave_id = false,
1482 .verify = NULL,
1483 .wrapper = mlx4_UPDATE_QP_wrapper
1484 },
1485 {
1486 .opcode = MLX4_CMD_GET_OP_REQ,
1487 .has_inbox = false,
1488 .has_outbox = false,
1489 .out_is_imm = false,
1490 .encode_slave_id = false,
1491 .verify = NULL,
1492 .wrapper = mlx4_CMD_EPERM_wrapper,
1493 },
1494 {
1495 .opcode = MLX4_CMD_ALLOCATE_VPP,
1496 .has_inbox = false,
1497 .has_outbox = true,
1498 .out_is_imm = false,
1499 .encode_slave_id = false,
1500 .verify = NULL,
1501 .wrapper = mlx4_CMD_EPERM_wrapper,
1502 },
1503 {
1504 .opcode = MLX4_CMD_SET_VPORT_QOS,
1505 .has_inbox = false,
1506 .has_outbox = true,
1507 .out_is_imm = false,
1508 .encode_slave_id = false,
1509 .verify = NULL,
1510 .wrapper = mlx4_CMD_EPERM_wrapper,
1511 },
1512 {
1513 .opcode = MLX4_CMD_CONF_SPECIAL_QP,
1514 .has_inbox = false,
1515 .has_outbox = false,
1516 .out_is_imm = false,
1517 .encode_slave_id = false,
1518 .verify = NULL, /* XXX verify: only demux can do this */
1519 .wrapper = NULL
1520 },
1521 {
1522 .opcode = MLX4_CMD_MAD_IFC,
1523 .has_inbox = true,
1524 .has_outbox = true,
1525 .out_is_imm = false,
1526 .encode_slave_id = false,
1527 .verify = NULL,
1528 .wrapper = mlx4_MAD_IFC_wrapper
1529 },
1530 {
1531 .opcode = MLX4_CMD_MAD_DEMUX,
1532 .has_inbox = false,
1533 .has_outbox = false,
1534 .out_is_imm = false,
1535 .encode_slave_id = false,
1536 .verify = NULL,
1537 .wrapper = mlx4_CMD_EPERM_wrapper
1538 },
1539 {
1540 .opcode = MLX4_CMD_QUERY_IF_STAT,
1541 .has_inbox = false,
1542 .has_outbox = true,
1543 .out_is_imm = false,
1544 .encode_slave_id = false,
1545 .verify = NULL,
1546 .wrapper = mlx4_QUERY_IF_STAT_wrapper
1547 },
1548 {
1549 .opcode = MLX4_CMD_ACCESS_REG,
1550 .has_inbox = true,
1551 .has_outbox = true,
1552 .out_is_imm = false,
1553 .encode_slave_id = false,
1554 .verify = NULL,
1555 .wrapper = mlx4_ACCESS_REG_wrapper,
1556 },
1557 {
1558 .opcode = MLX4_CMD_CONGESTION_CTRL_OPCODE,
1559 .has_inbox = false,
1560 .has_outbox = false,
1561 .out_is_imm = false,
1562 .encode_slave_id = false,
1563 .verify = NULL,
1564 .wrapper = mlx4_CMD_EPERM_wrapper,
1565 },
1566 /* Native multicast commands are not available for guests */
1567 {
1568 .opcode = MLX4_CMD_QP_ATTACH,
1569 .has_inbox = true,
1570 .has_outbox = false,
1571 .out_is_imm = false,
1572 .encode_slave_id = false,
1573 .verify = NULL,
1574 .wrapper = mlx4_QP_ATTACH_wrapper
1575 },
1576 {
1577 .opcode = MLX4_CMD_PROMISC,
1578 .has_inbox = false,
1579 .has_outbox = false,
1580 .out_is_imm = false,
1581 .encode_slave_id = false,
1582 .verify = NULL,
1583 .wrapper = mlx4_PROMISC_wrapper
1584 },
1585 /* Ethernet specific commands */
1586 {
1587 .opcode = MLX4_CMD_SET_VLAN_FLTR,
1588 .has_inbox = true,
1589 .has_outbox = false,
1590 .out_is_imm = false,
1591 .encode_slave_id = false,
1592 .verify = NULL,
1593 .wrapper = mlx4_SET_VLAN_FLTR_wrapper
1594 },
1595 {
1596 .opcode = MLX4_CMD_SET_MCAST_FLTR,
1597 .has_inbox = false,
1598 .has_outbox = false,
1599 .out_is_imm = false,
1600 .encode_slave_id = false,
1601 .verify = NULL,
1602 .wrapper = mlx4_SET_MCAST_FLTR_wrapper
1603 },
1604 {
1605 .opcode = MLX4_CMD_DUMP_ETH_STATS,
1606 .has_inbox = false,
1607 .has_outbox = true,
1608 .out_is_imm = false,
1609 .encode_slave_id = false,
1610 .verify = NULL,
1611 .wrapper = mlx4_DUMP_ETH_STATS_wrapper
1612 },
1613 {
1614 .opcode = MLX4_CMD_INFORM_FLR_DONE,
1615 .has_inbox = false,
1616 .has_outbox = false,
1617 .out_is_imm = false,
1618 .encode_slave_id = false,
1619 .verify = NULL,
1620 .wrapper = NULL
1621 },
1622 /* flow steering commands */
1623 {
1624 .opcode = MLX4_QP_FLOW_STEERING_ATTACH,
1625 .has_inbox = true,
1626 .has_outbox = false,
1627 .out_is_imm = true,
1628 .encode_slave_id = false,
1629 .verify = NULL,
1630 .wrapper = mlx4_QP_FLOW_STEERING_ATTACH_wrapper
1631 },
1632 {
1633 .opcode = MLX4_QP_FLOW_STEERING_DETACH,
1634 .has_inbox = false,
1635 .has_outbox = false,
1636 .out_is_imm = false,
1637 .encode_slave_id = false,
1638 .verify = NULL,
1639 .wrapper = mlx4_QP_FLOW_STEERING_DETACH_wrapper
1640 },
1641 {
1642 .opcode = MLX4_FLOW_STEERING_IB_UC_QP_RANGE,
1643 .has_inbox = false,
1644 .has_outbox = false,
1645 .out_is_imm = false,
1646 .encode_slave_id = false,
1647 .verify = NULL,
1648 .wrapper = mlx4_CMD_EPERM_wrapper
1649 },
1650 {
1651 .opcode = MLX4_CMD_VIRT_PORT_MAP,
1652 .has_inbox = false,
1653 .has_outbox = false,
1654 .out_is_imm = false,
1655 .encode_slave_id = false,
1656 .verify = NULL,
1657 .wrapper = mlx4_CMD_EPERM_wrapper
1658 },
1659 };
1660
1661 static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
1662 struct mlx4_vhcr_cmd *in_vhcr)
1663 {
1664 struct mlx4_priv *priv = mlx4_priv(dev);
1665 struct mlx4_cmd_info *cmd = NULL;
1666 struct mlx4_vhcr_cmd *vhcr_cmd = in_vhcr ? in_vhcr : priv->mfunc.vhcr;
1667 struct mlx4_vhcr *vhcr;
1668 struct mlx4_cmd_mailbox *inbox = NULL;
1669 struct mlx4_cmd_mailbox *outbox = NULL;
1670 u64 in_param;
1671 u64 out_param;
1672 int ret = 0;
1673 int i;
1674 int err = 0;
1675
1676 /* Create sw representation of Virtual HCR */
1677 vhcr = kzalloc(sizeof(struct mlx4_vhcr), GFP_KERNEL);
1678 if (!vhcr)
1679 return -ENOMEM;
1680
1681 /* DMA in the vHCR */
1682 if (!in_vhcr) {
1683 ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
1684 priv->mfunc.master.slave_state[slave].vhcr_dma,
1685 ALIGN(sizeof(struct mlx4_vhcr_cmd),
1686 MLX4_ACCESS_MEM_ALIGN), 1);
1687 if (ret) {
1688 if (!(dev->persist->state &
1689 MLX4_DEVICE_STATE_INTERNAL_ERROR))
1690 mlx4_err(dev, "%s: Failed reading vhcr ret: 0x%x\n",
1691 __func__, ret);
1692 kfree(vhcr);
1693 return ret;
1694 }
1695 }
1696
1697 /* Fill SW VHCR fields */
1698 vhcr->in_param = be64_to_cpu(vhcr_cmd->in_param);
1699 vhcr->out_param = be64_to_cpu(vhcr_cmd->out_param);
1700 vhcr->in_modifier = be32_to_cpu(vhcr_cmd->in_modifier);
1701 vhcr->token = be16_to_cpu(vhcr_cmd->token);
1702 vhcr->op = be16_to_cpu(vhcr_cmd->opcode) & 0xfff;
1703 vhcr->op_modifier = (u8) (be16_to_cpu(vhcr_cmd->opcode) >> 12);
1704 vhcr->e_bit = vhcr_cmd->flags & (1 << 6);
1705
1706 /* Lookup command */
1707 for (i = 0; i < ARRAY_SIZE(cmd_info); ++i) {
1708 if (vhcr->op == cmd_info[i].opcode) {
1709 cmd = &cmd_info[i];
1710 break;
1711 }
1712 }
1713 if (!cmd) {
1714 mlx4_err(dev, "Unknown command:0x%x accepted from slave:%d\n",
1715 vhcr->op, slave);
1716 vhcr_cmd->status = CMD_STAT_BAD_PARAM;
1717 goto out_status;
1718 }
1719
1720 /* Read inbox */
1721 if (cmd->has_inbox) {
1722 vhcr->in_param &= INBOX_MASK;
1723 inbox = mlx4_alloc_cmd_mailbox(dev);
1724 if (IS_ERR(inbox)) {
1725 vhcr_cmd->status = CMD_STAT_BAD_SIZE;
1726 inbox = NULL;
1727 goto out_status;
1728 }
1729
1730 ret = mlx4_ACCESS_MEM(dev, inbox->dma, slave,
1731 vhcr->in_param,
1732 MLX4_MAILBOX_SIZE, 1);
1733 if (ret) {
1734 if (!(dev->persist->state &
1735 MLX4_DEVICE_STATE_INTERNAL_ERROR))
1736 mlx4_err(dev, "%s: Failed reading inbox (cmd:0x%x)\n",
1737 __func__, cmd->opcode);
1738 vhcr_cmd->status = CMD_STAT_INTERNAL_ERR;
1739 goto out_status;
1740 }
1741 }
1742
1743 /* Apply permission and bound checks if applicable */
1744 if (cmd->verify && cmd->verify(dev, slave, vhcr, inbox)) {
1745 mlx4_warn(dev, "Command:0x%x from slave: %d failed protection checks for resource_id:%d\n",
1746 vhcr->op, slave, vhcr->in_modifier);
1747 vhcr_cmd->status = CMD_STAT_BAD_OP;
1748 goto out_status;
1749 }
1750
1751 /* Allocate outbox */
1752 if (cmd->has_outbox) {
1753 outbox = mlx4_alloc_cmd_mailbox(dev);
1754 if (IS_ERR(outbox)) {
1755 vhcr_cmd->status = CMD_STAT_BAD_SIZE;
1756 outbox = NULL;
1757 goto out_status;
1758 }
1759 }
1760
1761 /* Execute the command! */
1762 if (cmd->wrapper) {
1763 err = cmd->wrapper(dev, slave, vhcr, inbox, outbox,
1764 cmd);
1765 if (cmd->out_is_imm)
1766 vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param);
1767 } else {
1768 in_param = cmd->has_inbox ? (u64) inbox->dma :
1769 vhcr->in_param;
1770 out_param = cmd->has_outbox ? (u64) outbox->dma :
1771 vhcr->out_param;
1772 err = __mlx4_cmd(dev, in_param, &out_param,
1773 cmd->out_is_imm, vhcr->in_modifier,
1774 vhcr->op_modifier, vhcr->op,
1775 MLX4_CMD_TIME_CLASS_A,
1776 MLX4_CMD_NATIVE);
1777
1778 if (cmd->out_is_imm) {
1779 vhcr->out_param = out_param;
1780 vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param);
1781 }
1782 }
1783
1784 if (err) {
1785 if (!(dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR))
1786 mlx4_warn(dev, "vhcr command:0x%x slave:%d failed with error:%d, status %d\n",
1787 vhcr->op, slave, vhcr->errno, err);
1788 vhcr_cmd->status = mlx4_errno_to_status(err);
1789 goto out_status;
1790 }
1791
1792
1793 /* Write outbox if command completed successfully */
1794 if (cmd->has_outbox && !vhcr_cmd->status) {
1795 ret = mlx4_ACCESS_MEM(dev, outbox->dma, slave,
1796 vhcr->out_param,
1797 MLX4_MAILBOX_SIZE, MLX4_CMD_WRAPPED);
1798 if (ret) {
1799 /* If we failed to write back the outbox after the
1800 *command was successfully executed, we must fail this
1801 * slave, as it is now in undefined state */
1802 if (!(dev->persist->state &
1803 MLX4_DEVICE_STATE_INTERNAL_ERROR))
1804 mlx4_err(dev, "%s:Failed writing outbox\n", __func__);
1805 goto out;
1806 }
1807 }
1808
1809 out_status:
1810 /* DMA back vhcr result */
1811 if (!in_vhcr) {
1812 ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
1813 priv->mfunc.master.slave_state[slave].vhcr_dma,
1814 ALIGN(sizeof(struct mlx4_vhcr),
1815 MLX4_ACCESS_MEM_ALIGN),
1816 MLX4_CMD_WRAPPED);
1817 if (ret)
1818 mlx4_err(dev, "%s:Failed writing vhcr result\n",
1819 __func__);
1820 else if (vhcr->e_bit &&
1821 mlx4_GEN_EQE(dev, slave, &priv->mfunc.master.cmd_eqe))
1822 mlx4_warn(dev, "Failed to generate command completion eqe for slave %d\n",
1823 slave);
1824 }
1825
1826 out:
1827 kfree(vhcr);
1828 mlx4_free_cmd_mailbox(dev, inbox);
1829 mlx4_free_cmd_mailbox(dev, outbox);
1830 return ret;
1831 }
1832
1833 static int mlx4_master_immediate_activate_vlan_qos(struct mlx4_priv *priv,
1834 int slave, int port)
1835 {
1836 struct mlx4_vport_oper_state *vp_oper;
1837 struct mlx4_vport_state *vp_admin;
1838 struct mlx4_vf_immed_vlan_work *work;
1839 struct mlx4_dev *dev = &(priv->dev);
1840 int err;
1841 int admin_vlan_ix = NO_INDX;
1842
1843 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
1844 vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
1845
1846 if (vp_oper->state.default_vlan == vp_admin->default_vlan &&
1847 vp_oper->state.default_qos == vp_admin->default_qos &&
1848 vp_oper->state.link_state == vp_admin->link_state &&
1849 vp_oper->state.qos_vport == vp_admin->qos_vport)
1850 return 0;
1851
1852 if (!(priv->mfunc.master.slave_state[slave].active &&
1853 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP)) {
1854 /* even if the UPDATE_QP command isn't supported, we still want
1855 * to set this VF link according to the admin directive
1856 */
1857 vp_oper->state.link_state = vp_admin->link_state;
1858 return -1;
1859 }
1860
1861 mlx4_dbg(dev, "updating immediately admin params slave %d port %d\n",
1862 slave, port);
1863 mlx4_dbg(dev, "vlan %d QoS %d link down %d\n",
1864 vp_admin->default_vlan, vp_admin->default_qos,
1865 vp_admin->link_state);
1866
1867 work = kzalloc(sizeof(*work), GFP_KERNEL);
1868 if (!work)
1869 return -ENOMEM;
1870
1871 if (vp_oper->state.default_vlan != vp_admin->default_vlan) {
1872 if (MLX4_VGT != vp_admin->default_vlan) {
1873 err = __mlx4_register_vlan(&priv->dev, port,
1874 vp_admin->default_vlan,
1875 &admin_vlan_ix);
1876 if (err) {
1877 kfree(work);
1878 mlx4_warn(&priv->dev,
1879 "No vlan resources slave %d, port %d\n",
1880 slave, port);
1881 return err;
1882 }
1883 } else {
1884 admin_vlan_ix = NO_INDX;
1885 }
1886 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_VLAN;
1887 mlx4_dbg(&priv->dev,
1888 "alloc vlan %d idx %d slave %d port %d\n",
1889 (int)(vp_admin->default_vlan),
1890 admin_vlan_ix, slave, port);
1891 }
1892
1893 /* save original vlan ix and vlan id */
1894 work->orig_vlan_id = vp_oper->state.default_vlan;
1895 work->orig_vlan_ix = vp_oper->vlan_idx;
1896
1897 /* handle new qos */
1898 if (vp_oper->state.default_qos != vp_admin->default_qos)
1899 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_QOS;
1900
1901 if (work->flags & MLX4_VF_IMMED_VLAN_FLAG_VLAN)
1902 vp_oper->vlan_idx = admin_vlan_ix;
1903
1904 vp_oper->state.default_vlan = vp_admin->default_vlan;
1905 vp_oper->state.default_qos = vp_admin->default_qos;
1906 vp_oper->state.link_state = vp_admin->link_state;
1907 vp_oper->state.qos_vport = vp_admin->qos_vport;
1908
1909 if (vp_admin->link_state == IFLA_VF_LINK_STATE_DISABLE)
1910 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_LINK_DISABLE;
1911
1912 /* iterate over QPs owned by this slave, using UPDATE_QP */
1913 work->port = port;
1914 work->slave = slave;
1915 work->qos = vp_oper->state.default_qos;
1916 work->qos_vport = vp_oper->state.qos_vport;
1917 work->vlan_id = vp_oper->state.default_vlan;
1918 work->vlan_ix = vp_oper->vlan_idx;
1919 work->priv = priv;
1920 INIT_WORK(&work->work, mlx4_vf_immed_vlan_work_handler);
1921 queue_work(priv->mfunc.master.comm_wq, &work->work);
1922
1923 return 0;
1924 }
1925
1926 static void mlx4_set_default_port_qos(struct mlx4_dev *dev, int port)
1927 {
1928 struct mlx4_qos_manager *port_qos_ctl;
1929 struct mlx4_priv *priv = mlx4_priv(dev);
1930
1931 port_qos_ctl = &priv->mfunc.master.qos_ctl[port];
1932 bitmap_zero(port_qos_ctl->priority_bm, MLX4_NUM_UP);
1933
1934 /* Enable only default prio at PF init routine */
1935 set_bit(MLX4_DEFAULT_QOS_PRIO, port_qos_ctl->priority_bm);
1936 }
1937
1938 static void mlx4_allocate_port_vpps(struct mlx4_dev *dev, int port)
1939 {
1940 int i;
1941 int err;
1942 int num_vfs;
1943 u16 availible_vpp;
1944 u8 vpp_param[MLX4_NUM_UP];
1945 struct mlx4_qos_manager *port_qos;
1946 struct mlx4_priv *priv = mlx4_priv(dev);
1947
1948 err = mlx4_ALLOCATE_VPP_get(dev, port, &availible_vpp, vpp_param);
1949 if (err) {
1950 mlx4_info(dev, "Failed query availible VPPs\n");
1951 return;
1952 }
1953
1954 port_qos = &priv->mfunc.master.qos_ctl[port];
1955 num_vfs = (availible_vpp /
1956 bitmap_weight(port_qos->priority_bm, MLX4_NUM_UP));
1957
1958 for (i = 0; i < MLX4_NUM_UP; i++) {
1959 if (test_bit(i, port_qos->priority_bm))
1960 vpp_param[i] = num_vfs;
1961 }
1962
1963 err = mlx4_ALLOCATE_VPP_set(dev, port, vpp_param);
1964 if (err) {
1965 mlx4_info(dev, "Failed allocating VPPs\n");
1966 return;
1967 }
1968
1969 /* Query actual allocated VPP, just to make sure */
1970 err = mlx4_ALLOCATE_VPP_get(dev, port, &availible_vpp, vpp_param);
1971 if (err) {
1972 mlx4_info(dev, "Failed query availible VPPs\n");
1973 return;
1974 }
1975
1976 port_qos->num_of_qos_vfs = num_vfs;
1977 mlx4_dbg(dev, "Port %d Availible VPPs %d\n", port, availible_vpp);
1978
1979 for (i = 0; i < MLX4_NUM_UP; i++)
1980 mlx4_dbg(dev, "Port %d UP %d Allocated %d VPPs\n", port, i,
1981 vpp_param[i]);
1982 }
1983
1984 static int mlx4_master_activate_admin_state(struct mlx4_priv *priv, int slave)
1985 {
1986 int port, err;
1987 struct mlx4_vport_state *vp_admin;
1988 struct mlx4_vport_oper_state *vp_oper;
1989 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
1990 &priv->dev, slave);
1991 int min_port = find_first_bit(actv_ports.ports,
1992 priv->dev.caps.num_ports) + 1;
1993 int max_port = min_port - 1 +
1994 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
1995
1996 for (port = min_port; port <= max_port; port++) {
1997 if (!test_bit(port - 1, actv_ports.ports))
1998 continue;
1999 priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
2000 priv->mfunc.master.vf_admin[slave].enable_smi[port];
2001 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
2002 vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
2003 vp_oper->state = *vp_admin;
2004 if (MLX4_VGT != vp_admin->default_vlan) {
2005 err = __mlx4_register_vlan(&priv->dev, port,
2006 vp_admin->default_vlan, &(vp_oper->vlan_idx));
2007 if (err) {
2008 vp_oper->vlan_idx = NO_INDX;
2009 mlx4_warn(&priv->dev,
2010 "No vlan resources slave %d, port %d\n",
2011 slave, port);
2012 return err;
2013 }
2014 mlx4_dbg(&priv->dev, "alloc vlan %d idx %d slave %d port %d\n",
2015 (int)(vp_oper->state.default_vlan),
2016 vp_oper->vlan_idx, slave, port);
2017 }
2018 if (vp_admin->spoofchk) {
2019 vp_oper->mac_idx = __mlx4_register_mac(&priv->dev,
2020 port,
2021 vp_admin->mac);
2022 if (0 > vp_oper->mac_idx) {
2023 err = vp_oper->mac_idx;
2024 vp_oper->mac_idx = NO_INDX;
2025 mlx4_warn(&priv->dev,
2026 "No mac resources slave %d, port %d\n",
2027 slave, port);
2028 return err;
2029 }
2030 mlx4_dbg(&priv->dev, "alloc mac %llx idx %d slave %d port %d\n",
2031 vp_oper->state.mac, vp_oper->mac_idx, slave, port);
2032 }
2033 }
2034 return 0;
2035 }
2036
2037 static void mlx4_master_deactivate_admin_state(struct mlx4_priv *priv, int slave)
2038 {
2039 int port;
2040 struct mlx4_vport_oper_state *vp_oper;
2041 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
2042 &priv->dev, slave);
2043 int min_port = find_first_bit(actv_ports.ports,
2044 priv->dev.caps.num_ports) + 1;
2045 int max_port = min_port - 1 +
2046 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
2047
2048
2049 for (port = min_port; port <= max_port; port++) {
2050 if (!test_bit(port - 1, actv_ports.ports))
2051 continue;
2052 priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
2053 MLX4_VF_SMI_DISABLED;
2054 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
2055 if (NO_INDX != vp_oper->vlan_idx) {
2056 __mlx4_unregister_vlan(&priv->dev,
2057 port, vp_oper->state.default_vlan);
2058 vp_oper->vlan_idx = NO_INDX;
2059 }
2060 if (NO_INDX != vp_oper->mac_idx) {
2061 __mlx4_unregister_mac(&priv->dev, port, vp_oper->state.mac);
2062 vp_oper->mac_idx = NO_INDX;
2063 }
2064 }
2065 return;
2066 }
2067
2068 static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd,
2069 u16 param, u8 toggle)
2070 {
2071 struct mlx4_priv *priv = mlx4_priv(dev);
2072 struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state;
2073 u32 reply;
2074 u8 is_going_down = 0;
2075 int i;
2076 unsigned long flags;
2077
2078 slave_state[slave].comm_toggle ^= 1;
2079 reply = (u32) slave_state[slave].comm_toggle << 31;
2080 if (toggle != slave_state[slave].comm_toggle) {
2081 mlx4_warn(dev, "Incorrect toggle %d from slave %d. *** MASTER STATE COMPROMISED ***\n",
2082 toggle, slave);
2083 goto reset_slave;
2084 }
2085 if (cmd == MLX4_COMM_CMD_RESET) {
2086 mlx4_warn(dev, "Received reset from slave:%d\n", slave);
2087 slave_state[slave].active = false;
2088 slave_state[slave].old_vlan_api = false;
2089 mlx4_master_deactivate_admin_state(priv, slave);
2090 for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) {
2091 slave_state[slave].event_eq[i].eqn = -1;
2092 slave_state[slave].event_eq[i].token = 0;
2093 }
2094 /*check if we are in the middle of FLR process,
2095 if so return "retry" status to the slave*/
2096 if (MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd)
2097 goto inform_slave_state;
2098
2099 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_SHUTDOWN, slave);
2100
2101 /* write the version in the event field */
2102 reply |= mlx4_comm_get_version();
2103
2104 goto reset_slave;
2105 }
2106 /*command from slave in the middle of FLR*/
2107 if (cmd != MLX4_COMM_CMD_RESET &&
2108 MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd) {
2109 mlx4_warn(dev, "slave:%d is Trying to run cmd(0x%x) in the middle of FLR\n",
2110 slave, cmd);
2111 return;
2112 }
2113
2114 switch (cmd) {
2115 case MLX4_COMM_CMD_VHCR0:
2116 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_RESET)
2117 goto reset_slave;
2118 slave_state[slave].vhcr_dma = ((u64) param) << 48;
2119 priv->mfunc.master.slave_state[slave].cookie = 0;
2120 break;
2121 case MLX4_COMM_CMD_VHCR1:
2122 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR0)
2123 goto reset_slave;
2124 slave_state[slave].vhcr_dma |= ((u64) param) << 32;
2125 break;
2126 case MLX4_COMM_CMD_VHCR2:
2127 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR1)
2128 goto reset_slave;
2129 slave_state[slave].vhcr_dma |= ((u64) param) << 16;
2130 break;
2131 case MLX4_COMM_CMD_VHCR_EN:
2132 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR2)
2133 goto reset_slave;
2134 slave_state[slave].vhcr_dma |= param;
2135 if (mlx4_master_activate_admin_state(priv, slave))
2136 goto reset_slave;
2137 slave_state[slave].active = true;
2138 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_INIT, slave);
2139 break;
2140 case MLX4_COMM_CMD_VHCR_POST:
2141 if ((slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_EN) &&
2142 (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_POST)) {
2143 mlx4_warn(dev, "slave:%d is out of sync, cmd=0x%x, last command=0x%x, reset is needed\n",
2144 slave, cmd, slave_state[slave].last_cmd);
2145 goto reset_slave;
2146 }
2147
2148 mutex_lock(&priv->cmd.slave_cmd_mutex);
2149 if (mlx4_master_process_vhcr(dev, slave, NULL)) {
2150 mlx4_err(dev, "Failed processing vhcr for slave:%d, resetting slave\n",
2151 slave);
2152 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2153 goto reset_slave;
2154 }
2155 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2156 break;
2157 default:
2158 mlx4_warn(dev, "Bad comm cmd:%d from slave:%d\n", cmd, slave);
2159 goto reset_slave;
2160 }
2161 spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
2162 if (!slave_state[slave].is_slave_going_down)
2163 slave_state[slave].last_cmd = cmd;
2164 else
2165 is_going_down = 1;
2166 spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
2167 if (is_going_down) {
2168 mlx4_warn(dev, "Slave is going down aborting command(%d) executing from slave:%d\n",
2169 cmd, slave);
2170 return;
2171 }
2172 __raw_writel((__force u32) cpu_to_be32(reply),
2173 &priv->mfunc.comm[slave].slave_read);
2174 mmiowb();
2175
2176 return;
2177
2178 reset_slave:
2179 /* cleanup any slave resources */
2180 if (dev->persist->interface_state & MLX4_INTERFACE_STATE_UP)
2181 mlx4_delete_all_resources_for_slave(dev, slave);
2182
2183 if (cmd != MLX4_COMM_CMD_RESET) {
2184 mlx4_warn(dev, "Turn on internal error to force reset, slave=%d, cmd=0x%x\n",
2185 slave, cmd);
2186 /* Turn on internal error letting slave reset itself immeditaly,
2187 * otherwise it might take till timeout on command is passed
2188 */
2189 reply |= ((u32)COMM_CHAN_EVENT_INTERNAL_ERR);
2190 }
2191
2192 spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
2193 if (!slave_state[slave].is_slave_going_down)
2194 slave_state[slave].last_cmd = MLX4_COMM_CMD_RESET;
2195 spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
2196 /*with slave in the middle of flr, no need to clean resources again.*/
2197 inform_slave_state:
2198 memset(&slave_state[slave].event_eq, 0,
2199 sizeof(struct mlx4_slave_event_eq_info));
2200 __raw_writel((__force u32) cpu_to_be32(reply),
2201 &priv->mfunc.comm[slave].slave_read);
2202 wmb();
2203 }
2204
2205 /* master command processing */
2206 void mlx4_master_comm_channel(struct work_struct *work)
2207 {
2208 struct mlx4_mfunc_master_ctx *master =
2209 container_of(work,
2210 struct mlx4_mfunc_master_ctx,
2211 comm_work);
2212 struct mlx4_mfunc *mfunc =
2213 container_of(master, struct mlx4_mfunc, master);
2214 struct mlx4_priv *priv =
2215 container_of(mfunc, struct mlx4_priv, mfunc);
2216 struct mlx4_dev *dev = &priv->dev;
2217 __be32 *bit_vec;
2218 u32 comm_cmd;
2219 u32 vec;
2220 int i, j, slave;
2221 int toggle;
2222 int served = 0;
2223 int reported = 0;
2224 u32 slt;
2225
2226 bit_vec = master->comm_arm_bit_vector;
2227 for (i = 0; i < COMM_CHANNEL_BIT_ARRAY_SIZE; i++) {
2228 vec = be32_to_cpu(bit_vec[i]);
2229 for (j = 0; j < 32; j++) {
2230 if (!(vec & (1 << j)))
2231 continue;
2232 ++reported;
2233 slave = (i * 32) + j;
2234 comm_cmd = swab32(readl(
2235 &mfunc->comm[slave].slave_write));
2236 slt = swab32(readl(&mfunc->comm[slave].slave_read))
2237 >> 31;
2238 toggle = comm_cmd >> 31;
2239 if (toggle != slt) {
2240 if (master->slave_state[slave].comm_toggle
2241 != slt) {
2242 pr_info("slave %d out of sync. read toggle %d, state toggle %d. Resynching.\n",
2243 slave, slt,
2244 master->slave_state[slave].comm_toggle);
2245 master->slave_state[slave].comm_toggle =
2246 slt;
2247 }
2248 mlx4_master_do_cmd(dev, slave,
2249 comm_cmd >> 16 & 0xff,
2250 comm_cmd & 0xffff, toggle);
2251 ++served;
2252 }
2253 }
2254 }
2255
2256 if (reported && reported != served)
2257 mlx4_warn(dev, "Got command event with bitmask from %d slaves but %d were served\n",
2258 reported, served);
2259
2260 if (mlx4_ARM_COMM_CHANNEL(dev))
2261 mlx4_warn(dev, "Failed to arm comm channel events\n");
2262 }
2263
2264 static int sync_toggles(struct mlx4_dev *dev)
2265 {
2266 struct mlx4_priv *priv = mlx4_priv(dev);
2267 u32 wr_toggle;
2268 u32 rd_toggle;
2269 unsigned long end;
2270
2271 wr_toggle = swab32(readl(&priv->mfunc.comm->slave_write));
2272 if (wr_toggle == 0xffffffff)
2273 end = jiffies + msecs_to_jiffies(30000);
2274 else
2275 end = jiffies + msecs_to_jiffies(5000);
2276
2277 while (time_before(jiffies, end)) {
2278 rd_toggle = swab32(readl(&priv->mfunc.comm->slave_read));
2279 if (wr_toggle == 0xffffffff || rd_toggle == 0xffffffff) {
2280 /* PCI might be offline */
2281 msleep(100);
2282 wr_toggle = swab32(readl(&priv->mfunc.comm->
2283 slave_write));
2284 continue;
2285 }
2286
2287 if (rd_toggle >> 31 == wr_toggle >> 31) {
2288 priv->cmd.comm_toggle = rd_toggle >> 31;
2289 return 0;
2290 }
2291
2292 cond_resched();
2293 }
2294
2295 /*
2296 * we could reach here if for example the previous VM using this
2297 * function misbehaved and left the channel with unsynced state. We
2298 * should fix this here and give this VM a chance to use a properly
2299 * synced channel
2300 */
2301 mlx4_warn(dev, "recovering from previously mis-behaved VM\n");
2302 __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_read);
2303 __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_write);
2304 priv->cmd.comm_toggle = 0;
2305
2306 return 0;
2307 }
2308
2309 int mlx4_multi_func_init(struct mlx4_dev *dev)
2310 {
2311 struct mlx4_priv *priv = mlx4_priv(dev);
2312 struct mlx4_slave_state *s_state;
2313 int i, j, err, port;
2314
2315 if (mlx4_is_master(dev))
2316 priv->mfunc.comm =
2317 ioremap(pci_resource_start(dev->persist->pdev,
2318 priv->fw.comm_bar) +
2319 priv->fw.comm_base, MLX4_COMM_PAGESIZE);
2320 else
2321 priv->mfunc.comm =
2322 ioremap(pci_resource_start(dev->persist->pdev, 2) +
2323 MLX4_SLAVE_COMM_BASE, MLX4_COMM_PAGESIZE);
2324 if (!priv->mfunc.comm) {
2325 mlx4_err(dev, "Couldn't map communication vector\n");
2326 goto err_vhcr;
2327 }
2328
2329 if (mlx4_is_master(dev)) {
2330 struct mlx4_vf_oper_state *vf_oper;
2331 struct mlx4_vf_admin_state *vf_admin;
2332
2333 priv->mfunc.master.slave_state =
2334 kzalloc(dev->num_slaves *
2335 sizeof(struct mlx4_slave_state), GFP_KERNEL);
2336 if (!priv->mfunc.master.slave_state)
2337 goto err_comm;
2338
2339 priv->mfunc.master.vf_admin =
2340 kzalloc(dev->num_slaves *
2341 sizeof(struct mlx4_vf_admin_state), GFP_KERNEL);
2342 if (!priv->mfunc.master.vf_admin)
2343 goto err_comm_admin;
2344
2345 priv->mfunc.master.vf_oper =
2346 kzalloc(dev->num_slaves *
2347 sizeof(struct mlx4_vf_oper_state), GFP_KERNEL);
2348 if (!priv->mfunc.master.vf_oper)
2349 goto err_comm_oper;
2350
2351 for (i = 0; i < dev->num_slaves; ++i) {
2352 vf_admin = &priv->mfunc.master.vf_admin[i];
2353 vf_oper = &priv->mfunc.master.vf_oper[i];
2354 s_state = &priv->mfunc.master.slave_state[i];
2355 s_state->last_cmd = MLX4_COMM_CMD_RESET;
2356 mutex_init(&priv->mfunc.master.gen_eqe_mutex[i]);
2357 for (j = 0; j < MLX4_EVENT_TYPES_NUM; ++j)
2358 s_state->event_eq[j].eqn = -1;
2359 __raw_writel((__force u32) 0,
2360 &priv->mfunc.comm[i].slave_write);
2361 __raw_writel((__force u32) 0,
2362 &priv->mfunc.comm[i].slave_read);
2363 mmiowb();
2364 for (port = 1; port <= MLX4_MAX_PORTS; port++) {
2365 struct mlx4_vport_state *admin_vport;
2366 struct mlx4_vport_state *oper_vport;
2367
2368 s_state->vlan_filter[port] =
2369 kzalloc(sizeof(struct mlx4_vlan_fltr),
2370 GFP_KERNEL);
2371 if (!s_state->vlan_filter[port]) {
2372 if (--port)
2373 kfree(s_state->vlan_filter[port]);
2374 goto err_slaves;
2375 }
2376
2377 admin_vport = &vf_admin->vport[port];
2378 oper_vport = &vf_oper->vport[port].state;
2379 INIT_LIST_HEAD(&s_state->mcast_filters[port]);
2380 admin_vport->default_vlan = MLX4_VGT;
2381 oper_vport->default_vlan = MLX4_VGT;
2382 admin_vport->qos_vport =
2383 MLX4_VPP_DEFAULT_VPORT;
2384 oper_vport->qos_vport = MLX4_VPP_DEFAULT_VPORT;
2385 vf_oper->vport[port].vlan_idx = NO_INDX;
2386 vf_oper->vport[port].mac_idx = NO_INDX;
2387 mlx4_set_random_admin_guid(dev, i, port);
2388 }
2389 spin_lock_init(&s_state->lock);
2390 }
2391
2392 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP) {
2393 for (port = 1; port <= dev->caps.num_ports; port++) {
2394 if (mlx4_is_eth(dev, port)) {
2395 mlx4_set_default_port_qos(dev, port);
2396 mlx4_allocate_port_vpps(dev, port);
2397 }
2398 }
2399 }
2400
2401 memset(&priv->mfunc.master.cmd_eqe, 0, sizeof(struct mlx4_eqe));
2402 priv->mfunc.master.cmd_eqe.type = MLX4_EVENT_TYPE_CMD;
2403 INIT_WORK(&priv->mfunc.master.comm_work,
2404 mlx4_master_comm_channel);
2405 INIT_WORK(&priv->mfunc.master.slave_event_work,
2406 mlx4_gen_slave_eqe);
2407 INIT_WORK(&priv->mfunc.master.slave_flr_event_work,
2408 mlx4_master_handle_slave_flr);
2409 spin_lock_init(&priv->mfunc.master.slave_state_lock);
2410 spin_lock_init(&priv->mfunc.master.slave_eq.event_lock);
2411 priv->mfunc.master.comm_wq =
2412 create_singlethread_workqueue("mlx4_comm");
2413 if (!priv->mfunc.master.comm_wq)
2414 goto err_slaves;
2415
2416 if (mlx4_init_resource_tracker(dev))
2417 goto err_thread;
2418
2419 } else {
2420 err = sync_toggles(dev);
2421 if (err) {
2422 mlx4_err(dev, "Couldn't sync toggles\n");
2423 goto err_comm;
2424 }
2425 }
2426 return 0;
2427
2428 err_thread:
2429 flush_workqueue(priv->mfunc.master.comm_wq);
2430 destroy_workqueue(priv->mfunc.master.comm_wq);
2431 err_slaves:
2432 while (--i) {
2433 for (port = 1; port <= MLX4_MAX_PORTS; port++)
2434 kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2435 }
2436 kfree(priv->mfunc.master.vf_oper);
2437 err_comm_oper:
2438 kfree(priv->mfunc.master.vf_admin);
2439 err_comm_admin:
2440 kfree(priv->mfunc.master.slave_state);
2441 err_comm:
2442 iounmap(priv->mfunc.comm);
2443 err_vhcr:
2444 dma_free_coherent(&dev->persist->pdev->dev, PAGE_SIZE,
2445 priv->mfunc.vhcr,
2446 priv->mfunc.vhcr_dma);
2447 priv->mfunc.vhcr = NULL;
2448 return -ENOMEM;
2449 }
2450
2451 int mlx4_cmd_init(struct mlx4_dev *dev)
2452 {
2453 struct mlx4_priv *priv = mlx4_priv(dev);
2454 int flags = 0;
2455
2456 if (!priv->cmd.initialized) {
2457 mutex_init(&priv->cmd.slave_cmd_mutex);
2458 sema_init(&priv->cmd.poll_sem, 1);
2459 priv->cmd.use_events = 0;
2460 priv->cmd.toggle = 1;
2461 priv->cmd.initialized = 1;
2462 flags |= MLX4_CMD_CLEANUP_STRUCT;
2463 }
2464
2465 if (!mlx4_is_slave(dev) && !priv->cmd.hcr) {
2466 priv->cmd.hcr = ioremap(pci_resource_start(dev->persist->pdev,
2467 0) + MLX4_HCR_BASE, MLX4_HCR_SIZE);
2468 if (!priv->cmd.hcr) {
2469 mlx4_err(dev, "Couldn't map command register\n");
2470 goto err;
2471 }
2472 flags |= MLX4_CMD_CLEANUP_HCR;
2473 }
2474
2475 if (mlx4_is_mfunc(dev) && !priv->mfunc.vhcr) {
2476 priv->mfunc.vhcr = dma_alloc_coherent(&dev->persist->pdev->dev,
2477 PAGE_SIZE,
2478 &priv->mfunc.vhcr_dma,
2479 GFP_KERNEL);
2480 if (!priv->mfunc.vhcr)
2481 goto err;
2482
2483 flags |= MLX4_CMD_CLEANUP_VHCR;
2484 }
2485
2486 if (!priv->cmd.pool) {
2487 priv->cmd.pool = pci_pool_create("mlx4_cmd",
2488 dev->persist->pdev,
2489 MLX4_MAILBOX_SIZE,
2490 MLX4_MAILBOX_SIZE, 0);
2491 if (!priv->cmd.pool)
2492 goto err;
2493
2494 flags |= MLX4_CMD_CLEANUP_POOL;
2495 }
2496
2497 return 0;
2498
2499 err:
2500 mlx4_cmd_cleanup(dev, flags);
2501 return -ENOMEM;
2502 }
2503
2504 void mlx4_report_internal_err_comm_event(struct mlx4_dev *dev)
2505 {
2506 struct mlx4_priv *priv = mlx4_priv(dev);
2507 int slave;
2508 u32 slave_read;
2509
2510 /* Report an internal error event to all
2511 * communication channels.
2512 */
2513 for (slave = 0; slave < dev->num_slaves; slave++) {
2514 slave_read = swab32(readl(&priv->mfunc.comm[slave].slave_read));
2515 slave_read |= (u32)COMM_CHAN_EVENT_INTERNAL_ERR;
2516 __raw_writel((__force u32)cpu_to_be32(slave_read),
2517 &priv->mfunc.comm[slave].slave_read);
2518 /* Make sure that our comm channel write doesn't
2519 * get mixed in with writes from another CPU.
2520 */
2521 mmiowb();
2522 }
2523 }
2524
2525 void mlx4_multi_func_cleanup(struct mlx4_dev *dev)
2526 {
2527 struct mlx4_priv *priv = mlx4_priv(dev);
2528 int i, port;
2529
2530 if (mlx4_is_master(dev)) {
2531 flush_workqueue(priv->mfunc.master.comm_wq);
2532 destroy_workqueue(priv->mfunc.master.comm_wq);
2533 for (i = 0; i < dev->num_slaves; i++) {
2534 for (port = 1; port <= MLX4_MAX_PORTS; port++)
2535 kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2536 }
2537 kfree(priv->mfunc.master.slave_state);
2538 kfree(priv->mfunc.master.vf_admin);
2539 kfree(priv->mfunc.master.vf_oper);
2540 dev->num_slaves = 0;
2541 }
2542
2543 iounmap(priv->mfunc.comm);
2544 }
2545
2546 void mlx4_cmd_cleanup(struct mlx4_dev *dev, int cleanup_mask)
2547 {
2548 struct mlx4_priv *priv = mlx4_priv(dev);
2549
2550 if (priv->cmd.pool && (cleanup_mask & MLX4_CMD_CLEANUP_POOL)) {
2551 pci_pool_destroy(priv->cmd.pool);
2552 priv->cmd.pool = NULL;
2553 }
2554
2555 if (!mlx4_is_slave(dev) && priv->cmd.hcr &&
2556 (cleanup_mask & MLX4_CMD_CLEANUP_HCR)) {
2557 iounmap(priv->cmd.hcr);
2558 priv->cmd.hcr = NULL;
2559 }
2560 if (mlx4_is_mfunc(dev) && priv->mfunc.vhcr &&
2561 (cleanup_mask & MLX4_CMD_CLEANUP_VHCR)) {
2562 dma_free_coherent(&dev->persist->pdev->dev, PAGE_SIZE,
2563 priv->mfunc.vhcr, priv->mfunc.vhcr_dma);
2564 priv->mfunc.vhcr = NULL;
2565 }
2566 if (priv->cmd.initialized && (cleanup_mask & MLX4_CMD_CLEANUP_STRUCT))
2567 priv->cmd.initialized = 0;
2568 }
2569
2570 /*
2571 * Switch to using events to issue FW commands (can only be called
2572 * after event queue for command events has been initialized).
2573 */
2574 int mlx4_cmd_use_events(struct mlx4_dev *dev)
2575 {
2576 struct mlx4_priv *priv = mlx4_priv(dev);
2577 int i;
2578 int err = 0;
2579
2580 priv->cmd.context = kmalloc(priv->cmd.max_cmds *
2581 sizeof (struct mlx4_cmd_context),
2582 GFP_KERNEL);
2583 if (!priv->cmd.context)
2584 return -ENOMEM;
2585
2586 for (i = 0; i < priv->cmd.max_cmds; ++i) {
2587 priv->cmd.context[i].token = i;
2588 priv->cmd.context[i].next = i + 1;
2589 /* To support fatal error flow, initialize all
2590 * cmd contexts to allow simulating completions
2591 * with complete() at any time.
2592 */
2593 init_completion(&priv->cmd.context[i].done);
2594 }
2595
2596 priv->cmd.context[priv->cmd.max_cmds - 1].next = -1;
2597 priv->cmd.free_head = 0;
2598
2599 sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds);
2600 spin_lock_init(&priv->cmd.context_lock);
2601
2602 for (priv->cmd.token_mask = 1;
2603 priv->cmd.token_mask < priv->cmd.max_cmds;
2604 priv->cmd.token_mask <<= 1)
2605 ; /* nothing */
2606 --priv->cmd.token_mask;
2607
2608 down(&priv->cmd.poll_sem);
2609 priv->cmd.use_events = 1;
2610
2611 return err;
2612 }
2613
2614 /*
2615 * Switch back to polling (used when shutting down the device)
2616 */
2617 void mlx4_cmd_use_polling(struct mlx4_dev *dev)
2618 {
2619 struct mlx4_priv *priv = mlx4_priv(dev);
2620 int i;
2621
2622 priv->cmd.use_events = 0;
2623
2624 for (i = 0; i < priv->cmd.max_cmds; ++i)
2625 down(&priv->cmd.event_sem);
2626
2627 kfree(priv->cmd.context);
2628
2629 up(&priv->cmd.poll_sem);
2630 }
2631
2632 struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
2633 {
2634 struct mlx4_cmd_mailbox *mailbox;
2635
2636 mailbox = kmalloc(sizeof *mailbox, GFP_KERNEL);
2637 if (!mailbox)
2638 return ERR_PTR(-ENOMEM);
2639
2640 mailbox->buf = pci_pool_alloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
2641 &mailbox->dma);
2642 if (!mailbox->buf) {
2643 kfree(mailbox);
2644 return ERR_PTR(-ENOMEM);
2645 }
2646
2647 memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
2648
2649 return mailbox;
2650 }
2651 EXPORT_SYMBOL_GPL(mlx4_alloc_cmd_mailbox);
2652
2653 void mlx4_free_cmd_mailbox(struct mlx4_dev *dev,
2654 struct mlx4_cmd_mailbox *mailbox)
2655 {
2656 if (!mailbox)
2657 return;
2658
2659 pci_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
2660 kfree(mailbox);
2661 }
2662 EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox);
2663
2664 u32 mlx4_comm_get_version(void)
2665 {
2666 return ((u32) CMD_CHAN_IF_REV << 8) | (u32) CMD_CHAN_VER;
2667 }
2668
2669 static int mlx4_get_slave_indx(struct mlx4_dev *dev, int vf)
2670 {
2671 if ((vf < 0) || (vf >= dev->persist->num_vfs)) {
2672 mlx4_err(dev, "Bad vf number:%d (number of activated vf: %d)\n",
2673 vf, dev->persist->num_vfs);
2674 return -EINVAL;
2675 }
2676
2677 return vf+1;
2678 }
2679
2680 int mlx4_get_vf_indx(struct mlx4_dev *dev, int slave)
2681 {
2682 if (slave < 1 || slave > dev->persist->num_vfs) {
2683 mlx4_err(dev,
2684 "Bad slave number:%d (number of activated slaves: %lu)\n",
2685 slave, dev->num_slaves);
2686 return -EINVAL;
2687 }
2688 return slave - 1;
2689 }
2690
2691 void mlx4_cmd_wake_completions(struct mlx4_dev *dev)
2692 {
2693 struct mlx4_priv *priv = mlx4_priv(dev);
2694 struct mlx4_cmd_context *context;
2695 int i;
2696
2697 spin_lock(&priv->cmd.context_lock);
2698 if (priv->cmd.context) {
2699 for (i = 0; i < priv->cmd.max_cmds; ++i) {
2700 context = &priv->cmd.context[i];
2701 context->fw_status = CMD_STAT_INTERNAL_ERR;
2702 context->result =
2703 mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
2704 complete(&context->done);
2705 }
2706 }
2707 spin_unlock(&priv->cmd.context_lock);
2708 }
2709
2710 struct mlx4_active_ports mlx4_get_active_ports(struct mlx4_dev *dev, int slave)
2711 {
2712 struct mlx4_active_ports actv_ports;
2713 int vf;
2714
2715 bitmap_zero(actv_ports.ports, MLX4_MAX_PORTS);
2716
2717 if (slave == 0) {
2718 bitmap_fill(actv_ports.ports, dev->caps.num_ports);
2719 return actv_ports;
2720 }
2721
2722 vf = mlx4_get_vf_indx(dev, slave);
2723 if (vf < 0)
2724 return actv_ports;
2725
2726 bitmap_set(actv_ports.ports, dev->dev_vfs[vf].min_port - 1,
2727 min((int)dev->dev_vfs[mlx4_get_vf_indx(dev, slave)].n_ports,
2728 dev->caps.num_ports));
2729
2730 return actv_ports;
2731 }
2732 EXPORT_SYMBOL_GPL(mlx4_get_active_ports);
2733
2734 int mlx4_slave_convert_port(struct mlx4_dev *dev, int slave, int port)
2735 {
2736 unsigned n;
2737 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2738 unsigned m = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2739
2740 if (port <= 0 || port > m)
2741 return -EINVAL;
2742
2743 n = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2744 if (port <= n)
2745 port = n + 1;
2746
2747 return port;
2748 }
2749 EXPORT_SYMBOL_GPL(mlx4_slave_convert_port);
2750
2751 int mlx4_phys_to_slave_port(struct mlx4_dev *dev, int slave, int port)
2752 {
2753 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2754 if (test_bit(port - 1, actv_ports.ports))
2755 return port -
2756 find_first_bit(actv_ports.ports, dev->caps.num_ports);
2757
2758 return -1;
2759 }
2760 EXPORT_SYMBOL_GPL(mlx4_phys_to_slave_port);
2761
2762 struct mlx4_slaves_pport mlx4_phys_to_slaves_pport(struct mlx4_dev *dev,
2763 int port)
2764 {
2765 unsigned i;
2766 struct mlx4_slaves_pport slaves_pport;
2767
2768 bitmap_zero(slaves_pport.slaves, MLX4_MFUNC_MAX);
2769
2770 if (port <= 0 || port > dev->caps.num_ports)
2771 return slaves_pport;
2772
2773 for (i = 0; i < dev->persist->num_vfs + 1; i++) {
2774 struct mlx4_active_ports actv_ports =
2775 mlx4_get_active_ports(dev, i);
2776 if (test_bit(port - 1, actv_ports.ports))
2777 set_bit(i, slaves_pport.slaves);
2778 }
2779
2780 return slaves_pport;
2781 }
2782 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport);
2783
2784 struct mlx4_slaves_pport mlx4_phys_to_slaves_pport_actv(
2785 struct mlx4_dev *dev,
2786 const struct mlx4_active_ports *crit_ports)
2787 {
2788 unsigned i;
2789 struct mlx4_slaves_pport slaves_pport;
2790
2791 bitmap_zero(slaves_pport.slaves, MLX4_MFUNC_MAX);
2792
2793 for (i = 0; i < dev->persist->num_vfs + 1; i++) {
2794 struct mlx4_active_ports actv_ports =
2795 mlx4_get_active_ports(dev, i);
2796 if (bitmap_equal(crit_ports->ports, actv_ports.ports,
2797 dev->caps.num_ports))
2798 set_bit(i, slaves_pport.slaves);
2799 }
2800
2801 return slaves_pport;
2802 }
2803 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport_actv);
2804
2805 static int mlx4_slaves_closest_port(struct mlx4_dev *dev, int slave, int port)
2806 {
2807 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2808 int min_port = find_first_bit(actv_ports.ports, dev->caps.num_ports)
2809 + 1;
2810 int max_port = min_port +
2811 bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2812
2813 if (port < min_port)
2814 port = min_port;
2815 else if (port >= max_port)
2816 port = max_port - 1;
2817
2818 return port;
2819 }
2820
2821 static int mlx4_set_vport_qos(struct mlx4_priv *priv, int slave, int port,
2822 int max_tx_rate)
2823 {
2824 int i;
2825 int err;
2826 struct mlx4_qos_manager *port_qos;
2827 struct mlx4_dev *dev = &priv->dev;
2828 struct mlx4_vport_qos_param vpp_qos[MLX4_NUM_UP];
2829
2830 port_qos = &priv->mfunc.master.qos_ctl[port];
2831 memset(vpp_qos, 0, sizeof(struct mlx4_vport_qos_param) * MLX4_NUM_UP);
2832
2833 if (slave > port_qos->num_of_qos_vfs) {
2834 mlx4_info(dev, "No availible VPP resources for this VF\n");
2835 return -EINVAL;
2836 }
2837
2838 /* Query for default QoS values from Vport 0 is needed */
2839 err = mlx4_SET_VPORT_QOS_get(dev, port, 0, vpp_qos);
2840 if (err) {
2841 mlx4_info(dev, "Failed to query Vport 0 QoS values\n");
2842 return err;
2843 }
2844
2845 for (i = 0; i < MLX4_NUM_UP; i++) {
2846 if (test_bit(i, port_qos->priority_bm) && max_tx_rate) {
2847 vpp_qos[i].max_avg_bw = max_tx_rate;
2848 vpp_qos[i].enable = 1;
2849 } else {
2850 /* if user supplied tx_rate == 0, meaning no rate limit
2851 * configuration is required. so we are leaving the
2852 * value of max_avg_bw as queried from Vport 0.
2853 */
2854 vpp_qos[i].enable = 0;
2855 }
2856 }
2857
2858 err = mlx4_SET_VPORT_QOS_set(dev, port, slave, vpp_qos);
2859 if (err) {
2860 mlx4_info(dev, "Failed to set Vport %d QoS values\n", slave);
2861 return err;
2862 }
2863
2864 return 0;
2865 }
2866
2867 static bool mlx4_is_vf_vst_and_prio_qos(struct mlx4_dev *dev, int port,
2868 struct mlx4_vport_state *vf_admin)
2869 {
2870 struct mlx4_qos_manager *info;
2871 struct mlx4_priv *priv = mlx4_priv(dev);
2872
2873 if (!mlx4_is_master(dev) ||
2874 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP))
2875 return false;
2876
2877 info = &priv->mfunc.master.qos_ctl[port];
2878
2879 if (vf_admin->default_vlan != MLX4_VGT &&
2880 test_bit(vf_admin->default_qos, info->priority_bm))
2881 return true;
2882
2883 return false;
2884 }
2885
2886 static bool mlx4_valid_vf_state_change(struct mlx4_dev *dev, int port,
2887 struct mlx4_vport_state *vf_admin,
2888 int vlan, int qos)
2889 {
2890 struct mlx4_vport_state dummy_admin = {0};
2891
2892 if (!mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin) ||
2893 !vf_admin->tx_rate)
2894 return true;
2895
2896 dummy_admin.default_qos = qos;
2897 dummy_admin.default_vlan = vlan;
2898
2899 /* VF wants to move to other VST state which is valid with current
2900 * rate limit. Either differnt default vlan in VST or other
2901 * supported QoS priority. Otherwise we don't allow this change when
2902 * the TX rate is still configured.
2903 */
2904 if (mlx4_is_vf_vst_and_prio_qos(dev, port, &dummy_admin))
2905 return true;
2906
2907 mlx4_info(dev, "Cannot change VF state to %s while rate is set\n",
2908 (vlan == MLX4_VGT) ? "VGT" : "VST");
2909
2910 if (vlan != MLX4_VGT)
2911 mlx4_info(dev, "VST priority %d not supported for QoS\n", qos);
2912
2913 mlx4_info(dev, "Please set rate to 0 prior to this VF state change\n");
2914
2915 return false;
2916 }
2917
2918 int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u64 mac)
2919 {
2920 struct mlx4_priv *priv = mlx4_priv(dev);
2921 struct mlx4_vport_state *s_info;
2922 int slave;
2923
2924 if (!mlx4_is_master(dev))
2925 return -EPROTONOSUPPORT;
2926
2927 slave = mlx4_get_slave_indx(dev, vf);
2928 if (slave < 0)
2929 return -EINVAL;
2930
2931 port = mlx4_slaves_closest_port(dev, slave, port);
2932 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2933 s_info->mac = mac;
2934 mlx4_info(dev, "default mac on vf %d port %d to %llX will take effect only after vf restart\n",
2935 vf, port, s_info->mac);
2936 return 0;
2937 }
2938 EXPORT_SYMBOL_GPL(mlx4_set_vf_mac);
2939
2940
2941 int mlx4_set_vf_vlan(struct mlx4_dev *dev, int port, int vf, u16 vlan, u8 qos)
2942 {
2943 struct mlx4_priv *priv = mlx4_priv(dev);
2944 struct mlx4_vport_state *vf_admin;
2945 int slave;
2946
2947 if ((!mlx4_is_master(dev)) ||
2948 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VLAN_CONTROL))
2949 return -EPROTONOSUPPORT;
2950
2951 if ((vlan > 4095) || (qos > 7))
2952 return -EINVAL;
2953
2954 slave = mlx4_get_slave_indx(dev, vf);
2955 if (slave < 0)
2956 return -EINVAL;
2957
2958 port = mlx4_slaves_closest_port(dev, slave, port);
2959 vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
2960
2961 if (!mlx4_valid_vf_state_change(dev, port, vf_admin, vlan, qos))
2962 return -EPERM;
2963
2964 if ((0 == vlan) && (0 == qos))
2965 vf_admin->default_vlan = MLX4_VGT;
2966 else
2967 vf_admin->default_vlan = vlan;
2968 vf_admin->default_qos = qos;
2969
2970 /* If rate was configured prior to VST, we saved the configured rate
2971 * in vf_admin->rate and now, if priority supported we enforce the QoS
2972 */
2973 if (mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin) &&
2974 vf_admin->tx_rate)
2975 vf_admin->qos_vport = slave;
2976
2977 if (mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
2978 mlx4_info(dev,
2979 "updating vf %d port %d config will take effect on next VF restart\n",
2980 vf, port);
2981 return 0;
2982 }
2983 EXPORT_SYMBOL_GPL(mlx4_set_vf_vlan);
2984
2985 int mlx4_set_vf_rate(struct mlx4_dev *dev, int port, int vf, int min_tx_rate,
2986 int max_tx_rate)
2987 {
2988 int err;
2989 int slave;
2990 struct mlx4_vport_state *vf_admin;
2991 struct mlx4_priv *priv = mlx4_priv(dev);
2992
2993 if (!mlx4_is_master(dev) ||
2994 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP))
2995 return -EPROTONOSUPPORT;
2996
2997 if (min_tx_rate) {
2998 mlx4_info(dev, "Minimum BW share not supported\n");
2999 return -EPROTONOSUPPORT;
3000 }
3001
3002 slave = mlx4_get_slave_indx(dev, vf);
3003 if (slave < 0)
3004 return -EINVAL;
3005
3006 port = mlx4_slaves_closest_port(dev, slave, port);
3007 vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
3008
3009 err = mlx4_set_vport_qos(priv, slave, port, max_tx_rate);
3010 if (err) {
3011 mlx4_info(dev, "vf %d failed to set rate %d\n", vf,
3012 max_tx_rate);
3013 return err;
3014 }
3015
3016 vf_admin->tx_rate = max_tx_rate;
3017 /* if VF is not in supported mode (VST with supported prio),
3018 * we do not change vport configuration for its QPs, but save
3019 * the rate, so it will be enforced when it moves to supported
3020 * mode next time.
3021 */
3022 if (!mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin)) {
3023 mlx4_info(dev,
3024 "rate set for VF %d when not in valid state\n", vf);
3025
3026 if (vf_admin->default_vlan != MLX4_VGT)
3027 mlx4_info(dev, "VST priority not supported by QoS\n");
3028 else
3029 mlx4_info(dev, "VF in VGT mode (needed VST)\n");
3030
3031 mlx4_info(dev,
3032 "rate %d take affect when VF moves to valid state\n",
3033 max_tx_rate);
3034 return 0;
3035 }
3036
3037 /* If user sets rate 0 assigning default vport for its QPs */
3038 vf_admin->qos_vport = max_tx_rate ? slave : MLX4_VPP_DEFAULT_VPORT;
3039
3040 if (priv->mfunc.master.slave_state[slave].active &&
3041 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP)
3042 mlx4_master_immediate_activate_vlan_qos(priv, slave, port);
3043
3044 return 0;
3045 }
3046 EXPORT_SYMBOL_GPL(mlx4_set_vf_rate);
3047
3048 /* mlx4_get_slave_default_vlan -
3049 * return true if VST ( default vlan)
3050 * if VST, will return vlan & qos (if not NULL)
3051 */
3052 bool mlx4_get_slave_default_vlan(struct mlx4_dev *dev, int port, int slave,
3053 u16 *vlan, u8 *qos)
3054 {
3055 struct mlx4_vport_oper_state *vp_oper;
3056 struct mlx4_priv *priv;
3057
3058 priv = mlx4_priv(dev);
3059 port = mlx4_slaves_closest_port(dev, slave, port);
3060 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
3061
3062 if (MLX4_VGT != vp_oper->state.default_vlan) {
3063 if (vlan)
3064 *vlan = vp_oper->state.default_vlan;
3065 if (qos)
3066 *qos = vp_oper->state.default_qos;
3067 return true;
3068 }
3069 return false;
3070 }
3071 EXPORT_SYMBOL_GPL(mlx4_get_slave_default_vlan);
3072
3073 int mlx4_set_vf_spoofchk(struct mlx4_dev *dev, int port, int vf, bool setting)
3074 {
3075 struct mlx4_priv *priv = mlx4_priv(dev);
3076 struct mlx4_vport_state *s_info;
3077 int slave;
3078
3079 if ((!mlx4_is_master(dev)) ||
3080 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FSM))
3081 return -EPROTONOSUPPORT;
3082
3083 slave = mlx4_get_slave_indx(dev, vf);
3084 if (slave < 0)
3085 return -EINVAL;
3086
3087 port = mlx4_slaves_closest_port(dev, slave, port);
3088 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3089 s_info->spoofchk = setting;
3090
3091 return 0;
3092 }
3093 EXPORT_SYMBOL_GPL(mlx4_set_vf_spoofchk);
3094
3095 int mlx4_get_vf_config(struct mlx4_dev *dev, int port, int vf, struct ifla_vf_info *ivf)
3096 {
3097 struct mlx4_priv *priv = mlx4_priv(dev);
3098 struct mlx4_vport_state *s_info;
3099 int slave;
3100
3101 if (!mlx4_is_master(dev))
3102 return -EPROTONOSUPPORT;
3103
3104 slave = mlx4_get_slave_indx(dev, vf);
3105 if (slave < 0)
3106 return -EINVAL;
3107
3108 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3109 ivf->vf = vf;
3110
3111 /* need to convert it to a func */
3112 ivf->mac[0] = ((s_info->mac >> (5*8)) & 0xff);
3113 ivf->mac[1] = ((s_info->mac >> (4*8)) & 0xff);
3114 ivf->mac[2] = ((s_info->mac >> (3*8)) & 0xff);
3115 ivf->mac[3] = ((s_info->mac >> (2*8)) & 0xff);
3116 ivf->mac[4] = ((s_info->mac >> (1*8)) & 0xff);
3117 ivf->mac[5] = ((s_info->mac) & 0xff);
3118
3119 ivf->vlan = s_info->default_vlan;
3120 ivf->qos = s_info->default_qos;
3121
3122 if (mlx4_is_vf_vst_and_prio_qos(dev, port, s_info))
3123 ivf->max_tx_rate = s_info->tx_rate;
3124 else
3125 ivf->max_tx_rate = 0;
3126
3127 ivf->min_tx_rate = 0;
3128 ivf->spoofchk = s_info->spoofchk;
3129 ivf->linkstate = s_info->link_state;
3130
3131 return 0;
3132 }
3133 EXPORT_SYMBOL_GPL(mlx4_get_vf_config);
3134
3135 int mlx4_set_vf_link_state(struct mlx4_dev *dev, int port, int vf, int link_state)
3136 {
3137 struct mlx4_priv *priv = mlx4_priv(dev);
3138 struct mlx4_vport_state *s_info;
3139 int slave;
3140 u8 link_stat_event;
3141
3142 slave = mlx4_get_slave_indx(dev, vf);
3143 if (slave < 0)
3144 return -EINVAL;
3145
3146 port = mlx4_slaves_closest_port(dev, slave, port);
3147 switch (link_state) {
3148 case IFLA_VF_LINK_STATE_AUTO:
3149 /* get current link state */
3150 if (!priv->sense.do_sense_port[port])
3151 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
3152 else
3153 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
3154 break;
3155
3156 case IFLA_VF_LINK_STATE_ENABLE:
3157 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
3158 break;
3159
3160 case IFLA_VF_LINK_STATE_DISABLE:
3161 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
3162 break;
3163
3164 default:
3165 mlx4_warn(dev, "unknown value for link_state %02x on slave %d port %d\n",
3166 link_state, slave, port);
3167 return -EINVAL;
3168 };
3169 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3170 s_info->link_state = link_state;
3171
3172 /* send event */
3173 mlx4_gen_port_state_change_eqe(dev, slave, port, link_stat_event);
3174
3175 if (mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
3176 mlx4_dbg(dev,
3177 "updating vf %d port %d no link state HW enforcment\n",
3178 vf, port);
3179 return 0;
3180 }
3181 EXPORT_SYMBOL_GPL(mlx4_set_vf_link_state);
3182
3183 int mlx4_get_counter_stats(struct mlx4_dev *dev, int counter_index,
3184 struct mlx4_counter *counter_stats, int reset)
3185 {
3186 struct mlx4_cmd_mailbox *mailbox = NULL;
3187 struct mlx4_counter *tmp_counter;
3188 int err;
3189 u32 if_stat_in_mod;
3190
3191 if (!counter_stats)
3192 return -EINVAL;
3193
3194 if (counter_index == MLX4_SINK_COUNTER_INDEX(dev))
3195 return 0;
3196
3197 mailbox = mlx4_alloc_cmd_mailbox(dev);
3198 if (IS_ERR(mailbox))
3199 return PTR_ERR(mailbox);
3200
3201 memset(mailbox->buf, 0, sizeof(struct mlx4_counter));
3202 if_stat_in_mod = counter_index;
3203 if (reset)
3204 if_stat_in_mod |= MLX4_QUERY_IF_STAT_RESET;
3205 err = mlx4_cmd_box(dev, 0, mailbox->dma,
3206 if_stat_in_mod, 0,
3207 MLX4_CMD_QUERY_IF_STAT,
3208 MLX4_CMD_TIME_CLASS_C,
3209 MLX4_CMD_NATIVE);
3210 if (err) {
3211 mlx4_dbg(dev, "%s: failed to read statistics for counter index %d\n",
3212 __func__, counter_index);
3213 goto if_stat_out;
3214 }
3215 tmp_counter = (struct mlx4_counter *)mailbox->buf;
3216 counter_stats->counter_mode = tmp_counter->counter_mode;
3217 if (counter_stats->counter_mode == 0) {
3218 counter_stats->rx_frames =
3219 cpu_to_be64(be64_to_cpu(counter_stats->rx_frames) +
3220 be64_to_cpu(tmp_counter->rx_frames));
3221 counter_stats->tx_frames =
3222 cpu_to_be64(be64_to_cpu(counter_stats->tx_frames) +
3223 be64_to_cpu(tmp_counter->tx_frames));
3224 counter_stats->rx_bytes =
3225 cpu_to_be64(be64_to_cpu(counter_stats->rx_bytes) +
3226 be64_to_cpu(tmp_counter->rx_bytes));
3227 counter_stats->tx_bytes =
3228 cpu_to_be64(be64_to_cpu(counter_stats->tx_bytes) +
3229 be64_to_cpu(tmp_counter->tx_bytes));
3230 }
3231
3232 if_stat_out:
3233 mlx4_free_cmd_mailbox(dev, mailbox);
3234
3235 return err;
3236 }
3237 EXPORT_SYMBOL_GPL(mlx4_get_counter_stats);
3238
3239 int mlx4_get_vf_stats(struct mlx4_dev *dev, int port, int vf_idx,
3240 struct ifla_vf_stats *vf_stats)
3241 {
3242 struct mlx4_counter tmp_vf_stats;
3243 int slave;
3244 int err = 0;
3245
3246 if (!vf_stats)
3247 return -EINVAL;
3248
3249 if (!mlx4_is_master(dev))
3250 return -EPROTONOSUPPORT;
3251
3252 slave = mlx4_get_slave_indx(dev, vf_idx);
3253 if (slave < 0)
3254 return -EINVAL;
3255
3256 port = mlx4_slaves_closest_port(dev, slave, port);
3257 err = mlx4_calc_vf_counters(dev, slave, port, &tmp_vf_stats);
3258 if (!err && tmp_vf_stats.counter_mode == 0) {
3259 vf_stats->rx_packets = be64_to_cpu(tmp_vf_stats.rx_frames);
3260 vf_stats->tx_packets = be64_to_cpu(tmp_vf_stats.tx_frames);
3261 vf_stats->rx_bytes = be64_to_cpu(tmp_vf_stats.rx_bytes);
3262 vf_stats->tx_bytes = be64_to_cpu(tmp_vf_stats.tx_bytes);
3263 }
3264
3265 return err;
3266 }
3267 EXPORT_SYMBOL_GPL(mlx4_get_vf_stats);
3268
3269 int mlx4_vf_smi_enabled(struct mlx4_dev *dev, int slave, int port)
3270 {
3271 struct mlx4_priv *priv = mlx4_priv(dev);
3272
3273 if (slave < 1 || slave >= dev->num_slaves ||
3274 port < 1 || port > MLX4_MAX_PORTS)
3275 return 0;
3276
3277 return priv->mfunc.master.vf_oper[slave].smi_enabled[port] ==
3278 MLX4_VF_SMI_ENABLED;
3279 }
3280 EXPORT_SYMBOL_GPL(mlx4_vf_smi_enabled);
3281
3282 int mlx4_vf_get_enable_smi_admin(struct mlx4_dev *dev, int slave, int port)
3283 {
3284 struct mlx4_priv *priv = mlx4_priv(dev);
3285
3286 if (slave == mlx4_master_func_num(dev))
3287 return 1;
3288
3289 if (slave < 1 || slave >= dev->num_slaves ||
3290 port < 1 || port > MLX4_MAX_PORTS)
3291 return 0;
3292
3293 return priv->mfunc.master.vf_admin[slave].enable_smi[port] ==
3294 MLX4_VF_SMI_ENABLED;
3295 }
3296 EXPORT_SYMBOL_GPL(mlx4_vf_get_enable_smi_admin);
3297
3298 int mlx4_vf_set_enable_smi_admin(struct mlx4_dev *dev, int slave, int port,
3299 int enabled)
3300 {
3301 struct mlx4_priv *priv = mlx4_priv(dev);
3302 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
3303 &priv->dev, slave);
3304 int min_port = find_first_bit(actv_ports.ports,
3305 priv->dev.caps.num_ports) + 1;
3306 int max_port = min_port - 1 +
3307 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
3308
3309 if (slave == mlx4_master_func_num(dev))
3310 return 0;
3311
3312 if (slave < 1 || slave >= dev->num_slaves ||
3313 port < 1 || port > MLX4_MAX_PORTS ||
3314 enabled < 0 || enabled > 1)
3315 return -EINVAL;
3316
3317 if (min_port == max_port && dev->caps.num_ports > 1) {
3318 mlx4_info(dev, "SMI access disallowed for single ported VFs\n");
3319 return -EPROTONOSUPPORT;
3320 }
3321
3322 priv->mfunc.master.vf_admin[slave].enable_smi[port] = enabled;
3323 return 0;
3324 }
3325 EXPORT_SYMBOL_GPL(mlx4_vf_set_enable_smi_admin);
Linux with added FPC-III support