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 #include <linux/etherdevice.h>
47
48 #include <asm/io.h>
49
50 #include "mlx4.h"
51 #include "fw.h"
52 #include "fw_qos.h"
53 #include "mlx4_stats.h"
54
55 #define CMD_POLL_TOKEN 0xffff
56 #define INBOX_MASK 0xffffffffffffff00ULL
57
58 #define CMD_CHAN_VER 1
59 #define CMD_CHAN_IF_REV 1
60
61 enum {
62 /* command completed successfully: */
63 CMD_STAT_OK = 0x00,
64 /* Internal error (such as a bus error) occurred while processing command: */
65 CMD_STAT_INTERNAL_ERR = 0x01,
66 /* Operation/command not supported or opcode modifier not supported: */
67 CMD_STAT_BAD_OP = 0x02,
68 /* Parameter not supported or parameter out of range: */
69 CMD_STAT_BAD_PARAM = 0x03,
70 /* System not enabled or bad system state: */
71 CMD_STAT_BAD_SYS_STATE = 0x04,
72 /* Attempt to access reserved or unallocaterd resource: */
73 CMD_STAT_BAD_RESOURCE = 0x05,
74 /* Requested resource is currently executing a command, or is otherwise busy: */
75 CMD_STAT_RESOURCE_BUSY = 0x06,
76 /* Required capability exceeds device limits: */
77 CMD_STAT_EXCEED_LIM = 0x08,
78 /* Resource is not in the appropriate state or ownership: */
79 CMD_STAT_BAD_RES_STATE = 0x09,
80 /* Index out of range: */
81 CMD_STAT_BAD_INDEX = 0x0a,
82 /* FW image corrupted: */
83 CMD_STAT_BAD_NVMEM = 0x0b,
84 /* Error in ICM mapping (e.g. not enough auxiliary ICM pages to execute command): */
85 CMD_STAT_ICM_ERROR = 0x0c,
86 /* Attempt to modify a QP/EE which is not in the presumed state: */
87 CMD_STAT_BAD_QP_STATE = 0x10,
88 /* Bad segment parameters (Address/Size): */
89 CMD_STAT_BAD_SEG_PARAM = 0x20,
90 /* Memory Region has Memory Windows bound to: */
91 CMD_STAT_REG_BOUND = 0x21,
92 /* HCA local attached memory not present: */
93 CMD_STAT_LAM_NOT_PRE = 0x22,
94 /* Bad management packet (silently discarded): */
95 CMD_STAT_BAD_PKT = 0x30,
96 /* More outstanding CQEs in CQ than new CQ size: */
97 CMD_STAT_BAD_SIZE = 0x40,
98 /* Multi Function device support required: */
99 CMD_STAT_MULTI_FUNC_REQ = 0x50,
100 };
101
102 enum {
103 HCR_IN_PARAM_OFFSET = 0x00,
104 HCR_IN_MODIFIER_OFFSET = 0x08,
105 HCR_OUT_PARAM_OFFSET = 0x0c,
106 HCR_TOKEN_OFFSET = 0x14,
107 HCR_STATUS_OFFSET = 0x18,
108
109 HCR_OPMOD_SHIFT = 12,
110 HCR_T_BIT = 21,
111 HCR_E_BIT = 22,
112 HCR_GO_BIT = 23
113 };
114
115 enum {
116 GO_BIT_TIMEOUT_MSECS = 10000
117 };
118
119 enum mlx4_vlan_transition {
120 MLX4_VLAN_TRANSITION_VST_VST = 0,
121 MLX4_VLAN_TRANSITION_VST_VGT = 1,
122 MLX4_VLAN_TRANSITION_VGT_VST = 2,
123 MLX4_VLAN_TRANSITION_VGT_VGT = 3,
124 };
125
126
127 struct mlx4_cmd_context {
128 struct completion done;
129 int result;
130 int next;
131 u64 out_param;
132 u16 token;
133 u8 fw_status;
134 };
135
136 static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
137 struct mlx4_vhcr_cmd *in_vhcr);
138
mlx4_status_to_errno(u8 status)139 static int mlx4_status_to_errno(u8 status)
140 {
141 static const int trans_table[] = {
142 [CMD_STAT_INTERNAL_ERR] = -EIO,
143 [CMD_STAT_BAD_OP] = -EPERM,
144 [CMD_STAT_BAD_PARAM] = -EINVAL,
145 [CMD_STAT_BAD_SYS_STATE] = -ENXIO,
146 [CMD_STAT_BAD_RESOURCE] = -EBADF,
147 [CMD_STAT_RESOURCE_BUSY] = -EBUSY,
148 [CMD_STAT_EXCEED_LIM] = -ENOMEM,
149 [CMD_STAT_BAD_RES_STATE] = -EBADF,
150 [CMD_STAT_BAD_INDEX] = -EBADF,
151 [CMD_STAT_BAD_NVMEM] = -EFAULT,
152 [CMD_STAT_ICM_ERROR] = -ENFILE,
153 [CMD_STAT_BAD_QP_STATE] = -EINVAL,
154 [CMD_STAT_BAD_SEG_PARAM] = -EFAULT,
155 [CMD_STAT_REG_BOUND] = -EBUSY,
156 [CMD_STAT_LAM_NOT_PRE] = -EAGAIN,
157 [CMD_STAT_BAD_PKT] = -EINVAL,
158 [CMD_STAT_BAD_SIZE] = -ENOMEM,
159 [CMD_STAT_MULTI_FUNC_REQ] = -EACCES,
160 };
161
162 if (status >= ARRAY_SIZE(trans_table) ||
163 (status != CMD_STAT_OK && trans_table[status] == 0))
164 return -EIO;
165
166 return trans_table[status];
167 }
168
mlx4_errno_to_status(int errno)169 static u8 mlx4_errno_to_status(int errno)
170 {
171 switch (errno) {
172 case -EPERM:
173 return CMD_STAT_BAD_OP;
174 case -EINVAL:
175 return CMD_STAT_BAD_PARAM;
176 case -ENXIO:
177 return CMD_STAT_BAD_SYS_STATE;
178 case -EBUSY:
179 return CMD_STAT_RESOURCE_BUSY;
180 case -ENOMEM:
181 return CMD_STAT_EXCEED_LIM;
182 case -ENFILE:
183 return CMD_STAT_ICM_ERROR;
184 default:
185 return CMD_STAT_INTERNAL_ERR;
186 }
187 }
188
mlx4_internal_err_ret_value(struct mlx4_dev * dev,u16 op,u8 op_modifier)189 static int mlx4_internal_err_ret_value(struct mlx4_dev *dev, u16 op,
190 u8 op_modifier)
191 {
192 switch (op) {
193 case MLX4_CMD_UNMAP_ICM:
194 case MLX4_CMD_UNMAP_ICM_AUX:
195 case MLX4_CMD_UNMAP_FA:
196 case MLX4_CMD_2RST_QP:
197 case MLX4_CMD_HW2SW_EQ:
198 case MLX4_CMD_HW2SW_CQ:
199 case MLX4_CMD_HW2SW_SRQ:
200 case MLX4_CMD_HW2SW_MPT:
201 case MLX4_CMD_CLOSE_HCA:
202 case MLX4_QP_FLOW_STEERING_DETACH:
203 case MLX4_CMD_FREE_RES:
204 case MLX4_CMD_CLOSE_PORT:
205 return CMD_STAT_OK;
206
207 case MLX4_CMD_QP_ATTACH:
208 /* On Detach case return success */
209 if (op_modifier == 0)
210 return CMD_STAT_OK;
211 return mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
212
213 default:
214 return mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
215 }
216 }
217
mlx4_closing_cmd_fatal_error(u16 op,u8 fw_status)218 static int mlx4_closing_cmd_fatal_error(u16 op, u8 fw_status)
219 {
220 /* Any error during the closing commands below is considered fatal */
221 if (op == MLX4_CMD_CLOSE_HCA ||
222 op == MLX4_CMD_HW2SW_EQ ||
223 op == MLX4_CMD_HW2SW_CQ ||
224 op == MLX4_CMD_2RST_QP ||
225 op == MLX4_CMD_HW2SW_SRQ ||
226 op == MLX4_CMD_SYNC_TPT ||
227 op == MLX4_CMD_UNMAP_ICM ||
228 op == MLX4_CMD_UNMAP_ICM_AUX ||
229 op == MLX4_CMD_UNMAP_FA)
230 return 1;
231 /* Error on MLX4_CMD_HW2SW_MPT is fatal except when fw status equals
232 * CMD_STAT_REG_BOUND.
233 * This status indicates that memory region has memory windows bound to it
234 * which may result from invalid user space usage and is not fatal.
235 */
236 if (op == MLX4_CMD_HW2SW_MPT && fw_status != CMD_STAT_REG_BOUND)
237 return 1;
238 return 0;
239 }
240
mlx4_cmd_reset_flow(struct mlx4_dev * dev,u16 op,u8 op_modifier,int err)241 static int mlx4_cmd_reset_flow(struct mlx4_dev *dev, u16 op, u8 op_modifier,
242 int err)
243 {
244 /* Only if reset flow is really active return code is based on
245 * command, otherwise current error code is returned.
246 */
247 if (mlx4_internal_err_reset) {
248 mlx4_enter_error_state(dev->persist);
249 err = mlx4_internal_err_ret_value(dev, op, op_modifier);
250 }
251
252 return err;
253 }
254
comm_pending(struct mlx4_dev * dev)255 static int comm_pending(struct mlx4_dev *dev)
256 {
257 struct mlx4_priv *priv = mlx4_priv(dev);
258 u32 status = readl(&priv->mfunc.comm->slave_read);
259
260 return (swab32(status) >> 31) != priv->cmd.comm_toggle;
261 }
262
mlx4_comm_cmd_post(struct mlx4_dev * dev,u8 cmd,u16 param)263 static int mlx4_comm_cmd_post(struct mlx4_dev *dev, u8 cmd, u16 param)
264 {
265 struct mlx4_priv *priv = mlx4_priv(dev);
266 u32 val;
267
268 /* To avoid writing to unknown addresses after the device state was
269 * changed to internal error and the function was rest,
270 * check the INTERNAL_ERROR flag which is updated under
271 * device_state_mutex lock.
272 */
273 mutex_lock(&dev->persist->device_state_mutex);
274
275 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) {
276 mutex_unlock(&dev->persist->device_state_mutex);
277 return -EIO;
278 }
279
280 priv->cmd.comm_toggle ^= 1;
281 val = param | (cmd << 16) | (priv->cmd.comm_toggle << 31);
282 __raw_writel((__force u32) cpu_to_be32(val),
283 &priv->mfunc.comm->slave_write);
284 mutex_unlock(&dev->persist->device_state_mutex);
285 return 0;
286 }
287
mlx4_comm_cmd_poll(struct mlx4_dev * dev,u8 cmd,u16 param,unsigned long timeout)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
mlx4_comm_cmd_wait(struct mlx4_dev * dev,u8 vhcr_cmd,u16 param,u16 op,unsigned long timeout)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
mlx4_comm_cmd(struct mlx4_dev * dev,u8 cmd,u16 param,u16 op,unsigned long timeout)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
cmd_pending(struct mlx4_dev * dev)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
mlx4_cmd_post(struct mlx4_dev * dev,u64 in_param,u64 out_param,u32 in_modifier,u8 op_modifier,u16 op,u16 token,int event)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 cmd->toggle = cmd->toggle ^ 1;
499
500 ret = 0;
501
502 out:
503 if (ret)
504 mlx4_warn(dev, "Could not post command 0x%x: ret=%d, in_param=0x%llx, in_mod=0x%x, op_mod=0x%x\n",
505 op, ret, in_param, in_modifier, op_modifier);
506 mutex_unlock(&dev->persist->device_state_mutex);
507
508 return ret;
509 }
510
mlx4_slave_cmd(struct mlx4_dev * dev,u64 in_param,u64 * out_param,int out_is_imm,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout)511 static int mlx4_slave_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
512 int out_is_imm, u32 in_modifier, u8 op_modifier,
513 u16 op, unsigned long timeout)
514 {
515 struct mlx4_priv *priv = mlx4_priv(dev);
516 struct mlx4_vhcr_cmd *vhcr = priv->mfunc.vhcr;
517 int ret;
518
519 mutex_lock(&priv->cmd.slave_cmd_mutex);
520
521 vhcr->in_param = cpu_to_be64(in_param);
522 vhcr->out_param = out_param ? cpu_to_be64(*out_param) : 0;
523 vhcr->in_modifier = cpu_to_be32(in_modifier);
524 vhcr->opcode = cpu_to_be16((((u16) op_modifier) << 12) | (op & 0xfff));
525 vhcr->token = cpu_to_be16(CMD_POLL_TOKEN);
526 vhcr->status = 0;
527 vhcr->flags = !!(priv->cmd.use_events) << 6;
528
529 if (mlx4_is_master(dev)) {
530 ret = mlx4_master_process_vhcr(dev, dev->caps.function, vhcr);
531 if (!ret) {
532 if (out_is_imm) {
533 if (out_param)
534 *out_param =
535 be64_to_cpu(vhcr->out_param);
536 else {
537 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
538 op);
539 vhcr->status = CMD_STAT_BAD_PARAM;
540 }
541 }
542 ret = mlx4_status_to_errno(vhcr->status);
543 }
544 if (ret &&
545 dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
546 ret = mlx4_internal_err_ret_value(dev, op, op_modifier);
547 } else {
548 ret = mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_POST, 0, op,
549 MLX4_COMM_TIME + timeout);
550 if (!ret) {
551 if (out_is_imm) {
552 if (out_param)
553 *out_param =
554 be64_to_cpu(vhcr->out_param);
555 else {
556 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
557 op);
558 vhcr->status = CMD_STAT_BAD_PARAM;
559 }
560 }
561 ret = mlx4_status_to_errno(vhcr->status);
562 } else {
563 if (dev->persist->state &
564 MLX4_DEVICE_STATE_INTERNAL_ERROR)
565 ret = mlx4_internal_err_ret_value(dev, op,
566 op_modifier);
567 else
568 mlx4_err(dev, "failed execution of VHCR_POST command opcode 0x%x\n", op);
569 }
570 }
571
572 mutex_unlock(&priv->cmd.slave_cmd_mutex);
573 return ret;
574 }
575
mlx4_cmd_poll(struct mlx4_dev * dev,u64 in_param,u64 * out_param,int out_is_imm,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout)576 static int mlx4_cmd_poll(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
577 int out_is_imm, u32 in_modifier, u8 op_modifier,
578 u16 op, unsigned long timeout)
579 {
580 struct mlx4_priv *priv = mlx4_priv(dev);
581 void __iomem *hcr = priv->cmd.hcr;
582 int err = 0;
583 unsigned long end;
584 u32 stat;
585
586 down(&priv->cmd.poll_sem);
587
588 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) {
589 /*
590 * Device is going through error recovery
591 * and cannot accept commands.
592 */
593 err = mlx4_internal_err_ret_value(dev, op, op_modifier);
594 goto out;
595 }
596
597 if (out_is_imm && !out_param) {
598 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
599 op);
600 err = -EINVAL;
601 goto out;
602 }
603
604 err = mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
605 in_modifier, op_modifier, op, CMD_POLL_TOKEN, 0);
606 if (err)
607 goto out_reset;
608
609 end = msecs_to_jiffies(timeout) + jiffies;
610 while (cmd_pending(dev) && time_before(jiffies, end)) {
611 if (pci_channel_offline(dev->persist->pdev)) {
612 /*
613 * Device is going through error recovery
614 * and cannot accept commands.
615 */
616 err = -EIO;
617 goto out_reset;
618 }
619
620 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR) {
621 err = mlx4_internal_err_ret_value(dev, op, op_modifier);
622 goto out;
623 }
624
625 cond_resched();
626 }
627
628 if (cmd_pending(dev)) {
629 mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
630 op);
631 err = -EIO;
632 goto out_reset;
633 }
634
635 if (out_is_imm)
636 *out_param =
637 (u64) be32_to_cpu((__force __be32)
638 __raw_readl(hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
639 (u64) be32_to_cpu((__force __be32)
640 __raw_readl(hcr + HCR_OUT_PARAM_OFFSET + 4));
641 stat = be32_to_cpu((__force __be32)
642 __raw_readl(hcr + HCR_STATUS_OFFSET)) >> 24;
643 err = mlx4_status_to_errno(stat);
644 if (err) {
645 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
646 op, stat);
647 if (mlx4_closing_cmd_fatal_error(op, stat))
648 goto out_reset;
649 goto out;
650 }
651
652 out_reset:
653 if (err)
654 err = mlx4_cmd_reset_flow(dev, op, op_modifier, err);
655 out:
656 up(&priv->cmd.poll_sem);
657 return err;
658 }
659
mlx4_cmd_event(struct mlx4_dev * dev,u16 token,u8 status,u64 out_param)660 void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param)
661 {
662 struct mlx4_priv *priv = mlx4_priv(dev);
663 struct mlx4_cmd_context *context =
664 &priv->cmd.context[token & priv->cmd.token_mask];
665
666 /* previously timed out command completing at long last */
667 if (token != context->token)
668 return;
669
670 context->fw_status = status;
671 context->result = mlx4_status_to_errno(status);
672 context->out_param = out_param;
673
674 complete(&context->done);
675 }
676
mlx4_cmd_wait(struct mlx4_dev * dev,u64 in_param,u64 * out_param,int out_is_imm,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout)677 static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
678 int out_is_imm, u32 in_modifier, u8 op_modifier,
679 u16 op, unsigned long timeout)
680 {
681 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
682 struct mlx4_cmd_context *context;
683 long ret_wait;
684 int err = 0;
685
686 down(&cmd->event_sem);
687
688 spin_lock(&cmd->context_lock);
689 BUG_ON(cmd->free_head < 0);
690 context = &cmd->context[cmd->free_head];
691 context->token += cmd->token_mask + 1;
692 cmd->free_head = context->next;
693 spin_unlock(&cmd->context_lock);
694
695 if (out_is_imm && !out_param) {
696 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
697 op);
698 err = -EINVAL;
699 goto out;
700 }
701
702 reinit_completion(&context->done);
703
704 err = mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
705 in_modifier, op_modifier, op, context->token, 1);
706 if (err)
707 goto out_reset;
708
709 if (op == MLX4_CMD_SENSE_PORT) {
710 ret_wait =
711 wait_for_completion_interruptible_timeout(&context->done,
712 msecs_to_jiffies(timeout));
713 if (ret_wait < 0) {
714 context->fw_status = 0;
715 context->out_param = 0;
716 context->result = 0;
717 }
718 } else {
719 ret_wait = (long)wait_for_completion_timeout(&context->done,
720 msecs_to_jiffies(timeout));
721 }
722 if (!ret_wait) {
723 mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
724 op);
725 if (op == MLX4_CMD_NOP) {
726 err = -EBUSY;
727 goto out;
728 } else {
729 err = -EIO;
730 goto out_reset;
731 }
732 }
733
734 err = context->result;
735 if (err) {
736 /* Since we do not want to have this error message always
737 * displayed at driver start when there are ConnectX2 HCAs
738 * on the host, we deprecate the error message for this
739 * specific command/input_mod/opcode_mod/fw-status to be debug.
740 */
741 if (op == MLX4_CMD_SET_PORT &&
742 (in_modifier == 1 || in_modifier == 2) &&
743 op_modifier == MLX4_SET_PORT_IB_OPCODE &&
744 context->fw_status == CMD_STAT_BAD_SIZE)
745 mlx4_dbg(dev, "command 0x%x failed: fw status = 0x%x\n",
746 op, context->fw_status);
747 else
748 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
749 op, context->fw_status);
750 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
751 err = mlx4_internal_err_ret_value(dev, op, op_modifier);
752 else if (mlx4_closing_cmd_fatal_error(op, context->fw_status))
753 goto out_reset;
754
755 goto out;
756 }
757
758 if (out_is_imm)
759 *out_param = context->out_param;
760
761 out_reset:
762 if (err)
763 err = mlx4_cmd_reset_flow(dev, op, op_modifier, err);
764 out:
765 spin_lock(&cmd->context_lock);
766 context->next = cmd->free_head;
767 cmd->free_head = context - cmd->context;
768 spin_unlock(&cmd->context_lock);
769
770 up(&cmd->event_sem);
771 return err;
772 }
773
__mlx4_cmd(struct mlx4_dev * dev,u64 in_param,u64 * out_param,int out_is_imm,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout,int native)774 int __mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
775 int out_is_imm, u32 in_modifier, u8 op_modifier,
776 u16 op, unsigned long timeout, int native)
777 {
778 if (pci_channel_offline(dev->persist->pdev))
779 return mlx4_cmd_reset_flow(dev, op, op_modifier, -EIO);
780
781 if (!mlx4_is_mfunc(dev) || (native && mlx4_is_master(dev))) {
782 int ret;
783
784 if (dev->persist->state & MLX4_DEVICE_STATE_INTERNAL_ERROR)
785 return mlx4_internal_err_ret_value(dev, op,
786 op_modifier);
787 down_read(&mlx4_priv(dev)->cmd.switch_sem);
788 if (mlx4_priv(dev)->cmd.use_events)
789 ret = mlx4_cmd_wait(dev, in_param, out_param,
790 out_is_imm, in_modifier,
791 op_modifier, op, timeout);
792 else
793 ret = mlx4_cmd_poll(dev, in_param, out_param,
794 out_is_imm, in_modifier,
795 op_modifier, op, timeout);
796
797 up_read(&mlx4_priv(dev)->cmd.switch_sem);
798 return ret;
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
mlx4_ARM_COMM_CHANNEL(struct mlx4_dev * dev)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
mlx4_ACCESS_MEM(struct mlx4_dev * dev,u64 master_addr,int slave,u64 slave_addr,int size,int is_read)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
query_pkey_block(struct mlx4_dev * dev,u8 port,u16 index,u16 * pkey,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox)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
get_full_pkey_table(struct mlx4_dev * dev,u8 port,u16 * table,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox)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
vf_port_state(struct mlx4_dev * dev,int port,int vf)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
mlx4_MAD_IFC_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)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
mlx4_CMD_EPERM_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)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
mlx4_DMA_wrapper(struct mlx4_dev * dev,int slave,struct mlx4_vhcr * vhcr,struct mlx4_cmd_mailbox * inbox,struct mlx4_cmd_mailbox * outbox,struct mlx4_cmd_info * cmd)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
mlx4_master_process_vhcr(struct mlx4_dev * dev,int slave,struct mlx4_vhcr_cmd * in_vhcr)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 if (vhcr->op == MLX4_CMD_ALLOC_RES &&
1787 (vhcr->in_modifier & 0xff) == RES_COUNTER &&
1788 err == -EDQUOT)
1789 mlx4_dbg(dev,
1790 "Unable to allocate counter for slave %d (%d)\n",
1791 slave, err);
1792 else
1793 mlx4_warn(dev, "vhcr command:0x%x slave:%d failed with error:%d, status %d\n",
1794 vhcr->op, slave, vhcr->errno, err);
1795 }
1796 vhcr_cmd->status = mlx4_errno_to_status(err);
1797 goto out_status;
1798 }
1799
1800
1801 /* Write outbox if command completed successfully */
1802 if (cmd->has_outbox && !vhcr_cmd->status) {
1803 ret = mlx4_ACCESS_MEM(dev, outbox->dma, slave,
1804 vhcr->out_param,
1805 MLX4_MAILBOX_SIZE, MLX4_CMD_WRAPPED);
1806 if (ret) {
1807 /* If we failed to write back the outbox after the
1808 *command was successfully executed, we must fail this
1809 * slave, as it is now in undefined state */
1810 if (!(dev->persist->state &
1811 MLX4_DEVICE_STATE_INTERNAL_ERROR))
1812 mlx4_err(dev, "%s:Failed writing outbox\n", __func__);
1813 goto out;
1814 }
1815 }
1816
1817 out_status:
1818 /* DMA back vhcr result */
1819 if (!in_vhcr) {
1820 ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
1821 priv->mfunc.master.slave_state[slave].vhcr_dma,
1822 ALIGN(sizeof(struct mlx4_vhcr),
1823 MLX4_ACCESS_MEM_ALIGN),
1824 MLX4_CMD_WRAPPED);
1825 if (ret)
1826 mlx4_err(dev, "%s:Failed writing vhcr result\n",
1827 __func__);
1828 else if (vhcr->e_bit &&
1829 mlx4_GEN_EQE(dev, slave, &priv->mfunc.master.cmd_eqe))
1830 mlx4_warn(dev, "Failed to generate command completion eqe for slave %d\n",
1831 slave);
1832 }
1833
1834 out:
1835 kfree(vhcr);
1836 mlx4_free_cmd_mailbox(dev, inbox);
1837 mlx4_free_cmd_mailbox(dev, outbox);
1838 return ret;
1839 }
1840
mlx4_master_immediate_activate_vlan_qos(struct mlx4_priv * priv,int slave,int port)1841 static int mlx4_master_immediate_activate_vlan_qos(struct mlx4_priv *priv,
1842 int slave, int port)
1843 {
1844 struct mlx4_vport_oper_state *vp_oper;
1845 struct mlx4_vport_state *vp_admin;
1846 struct mlx4_vf_immed_vlan_work *work;
1847 struct mlx4_dev *dev = &(priv->dev);
1848 int err;
1849 int admin_vlan_ix = NO_INDX;
1850
1851 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
1852 vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
1853
1854 if (vp_oper->state.default_vlan == vp_admin->default_vlan &&
1855 vp_oper->state.default_qos == vp_admin->default_qos &&
1856 vp_oper->state.vlan_proto == vp_admin->vlan_proto &&
1857 vp_oper->state.link_state == vp_admin->link_state &&
1858 vp_oper->state.qos_vport == vp_admin->qos_vport)
1859 return 0;
1860
1861 if (!(priv->mfunc.master.slave_state[slave].active &&
1862 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP)) {
1863 /* even if the UPDATE_QP command isn't supported, we still want
1864 * to set this VF link according to the admin directive
1865 */
1866 vp_oper->state.link_state = vp_admin->link_state;
1867 return -1;
1868 }
1869
1870 mlx4_dbg(dev, "updating immediately admin params slave %d port %d\n",
1871 slave, port);
1872 mlx4_dbg(dev, "vlan %d QoS %d link down %d\n",
1873 vp_admin->default_vlan, vp_admin->default_qos,
1874 vp_admin->link_state);
1875
1876 work = kzalloc(sizeof(*work), GFP_KERNEL);
1877 if (!work)
1878 return -ENOMEM;
1879
1880 if (vp_oper->state.default_vlan != vp_admin->default_vlan) {
1881 if (MLX4_VGT != vp_admin->default_vlan) {
1882 err = __mlx4_register_vlan(&priv->dev, port,
1883 vp_admin->default_vlan,
1884 &admin_vlan_ix);
1885 if (err) {
1886 kfree(work);
1887 mlx4_warn(&priv->dev,
1888 "No vlan resources slave %d, port %d\n",
1889 slave, port);
1890 return err;
1891 }
1892 } else {
1893 admin_vlan_ix = NO_INDX;
1894 }
1895 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_VLAN;
1896 mlx4_dbg(&priv->dev,
1897 "alloc vlan %d idx %d slave %d port %d\n",
1898 (int)(vp_admin->default_vlan),
1899 admin_vlan_ix, slave, port);
1900 }
1901
1902 /* save original vlan ix and vlan id */
1903 work->orig_vlan_id = vp_oper->state.default_vlan;
1904 work->orig_vlan_ix = vp_oper->vlan_idx;
1905
1906 /* handle new qos */
1907 if (vp_oper->state.default_qos != vp_admin->default_qos)
1908 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_QOS;
1909
1910 if (work->flags & MLX4_VF_IMMED_VLAN_FLAG_VLAN)
1911 vp_oper->vlan_idx = admin_vlan_ix;
1912
1913 vp_oper->state.default_vlan = vp_admin->default_vlan;
1914 vp_oper->state.default_qos = vp_admin->default_qos;
1915 vp_oper->state.vlan_proto = vp_admin->vlan_proto;
1916 vp_oper->state.link_state = vp_admin->link_state;
1917 vp_oper->state.qos_vport = vp_admin->qos_vport;
1918
1919 if (vp_admin->link_state == IFLA_VF_LINK_STATE_DISABLE)
1920 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_LINK_DISABLE;
1921
1922 /* iterate over QPs owned by this slave, using UPDATE_QP */
1923 work->port = port;
1924 work->slave = slave;
1925 work->qos = vp_oper->state.default_qos;
1926 work->qos_vport = vp_oper->state.qos_vport;
1927 work->vlan_id = vp_oper->state.default_vlan;
1928 work->vlan_ix = vp_oper->vlan_idx;
1929 work->vlan_proto = vp_oper->state.vlan_proto;
1930 work->priv = priv;
1931 INIT_WORK(&work->work, mlx4_vf_immed_vlan_work_handler);
1932 queue_work(priv->mfunc.master.comm_wq, &work->work);
1933
1934 return 0;
1935 }
1936
mlx4_set_default_port_qos(struct mlx4_dev * dev,int port)1937 static void mlx4_set_default_port_qos(struct mlx4_dev *dev, int port)
1938 {
1939 struct mlx4_qos_manager *port_qos_ctl;
1940 struct mlx4_priv *priv = mlx4_priv(dev);
1941
1942 port_qos_ctl = &priv->mfunc.master.qos_ctl[port];
1943 bitmap_zero(port_qos_ctl->priority_bm, MLX4_NUM_UP);
1944
1945 /* Enable only default prio at PF init routine */
1946 set_bit(MLX4_DEFAULT_QOS_PRIO, port_qos_ctl->priority_bm);
1947 }
1948
mlx4_allocate_port_vpps(struct mlx4_dev * dev,int port)1949 static void mlx4_allocate_port_vpps(struct mlx4_dev *dev, int port)
1950 {
1951 int i;
1952 int err;
1953 int num_vfs;
1954 u16 available_vpp;
1955 u8 vpp_param[MLX4_NUM_UP];
1956 struct mlx4_qos_manager *port_qos;
1957 struct mlx4_priv *priv = mlx4_priv(dev);
1958
1959 err = mlx4_ALLOCATE_VPP_get(dev, port, &available_vpp, vpp_param);
1960 if (err) {
1961 mlx4_info(dev, "Failed query available VPPs\n");
1962 return;
1963 }
1964
1965 port_qos = &priv->mfunc.master.qos_ctl[port];
1966 num_vfs = (available_vpp /
1967 bitmap_weight(port_qos->priority_bm, MLX4_NUM_UP));
1968
1969 for (i = 0; i < MLX4_NUM_UP; i++) {
1970 if (test_bit(i, port_qos->priority_bm))
1971 vpp_param[i] = num_vfs;
1972 }
1973
1974 err = mlx4_ALLOCATE_VPP_set(dev, port, vpp_param);
1975 if (err) {
1976 mlx4_info(dev, "Failed allocating VPPs\n");
1977 return;
1978 }
1979
1980 /* Query actual allocated VPP, just to make sure */
1981 err = mlx4_ALLOCATE_VPP_get(dev, port, &available_vpp, vpp_param);
1982 if (err) {
1983 mlx4_info(dev, "Failed query available VPPs\n");
1984 return;
1985 }
1986
1987 port_qos->num_of_qos_vfs = num_vfs;
1988 mlx4_dbg(dev, "Port %d Available VPPs %d\n", port, available_vpp);
1989
1990 for (i = 0; i < MLX4_NUM_UP; i++)
1991 mlx4_dbg(dev, "Port %d UP %d Allocated %d VPPs\n", port, i,
1992 vpp_param[i]);
1993 }
1994
mlx4_master_activate_admin_state(struct mlx4_priv * priv,int slave)1995 static int mlx4_master_activate_admin_state(struct mlx4_priv *priv, int slave)
1996 {
1997 int p, port, err;
1998 struct mlx4_vport_state *vp_admin;
1999 struct mlx4_vport_oper_state *vp_oper;
2000 struct mlx4_slave_state *slave_state =
2001 &priv->mfunc.master.slave_state[slave];
2002 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
2003 &priv->dev, slave);
2004
2005 for_each_set_bit(p, actv_ports.ports, priv->dev.caps.num_ports) {
2006 port = p + 1;
2007 priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
2008 priv->mfunc.master.vf_admin[slave].enable_smi[port];
2009 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
2010 vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
2011 if (vp_admin->vlan_proto != htons(ETH_P_8021AD) ||
2012 slave_state->vst_qinq_supported) {
2013 vp_oper->state.vlan_proto = vp_admin->vlan_proto;
2014 vp_oper->state.default_vlan = vp_admin->default_vlan;
2015 vp_oper->state.default_qos = vp_admin->default_qos;
2016 }
2017 vp_oper->state.link_state = vp_admin->link_state;
2018 vp_oper->state.mac = vp_admin->mac;
2019 vp_oper->state.spoofchk = vp_admin->spoofchk;
2020 vp_oper->state.tx_rate = vp_admin->tx_rate;
2021 vp_oper->state.qos_vport = vp_admin->qos_vport;
2022 vp_oper->state.guid = vp_admin->guid;
2023
2024 if (MLX4_VGT != vp_admin->default_vlan) {
2025 err = __mlx4_register_vlan(&priv->dev, port,
2026 vp_admin->default_vlan, &(vp_oper->vlan_idx));
2027 if (err) {
2028 vp_oper->vlan_idx = NO_INDX;
2029 vp_oper->state.default_vlan = MLX4_VGT;
2030 vp_oper->state.vlan_proto = htons(ETH_P_8021Q);
2031 mlx4_warn(&priv->dev,
2032 "No vlan resources slave %d, port %d\n",
2033 slave, port);
2034 return err;
2035 }
2036 mlx4_dbg(&priv->dev, "alloc vlan %d idx %d slave %d port %d\n",
2037 (int)(vp_oper->state.default_vlan),
2038 vp_oper->vlan_idx, slave, port);
2039 }
2040 if (vp_admin->spoofchk) {
2041 vp_oper->mac_idx = __mlx4_register_mac(&priv->dev,
2042 port,
2043 vp_admin->mac);
2044 if (0 > vp_oper->mac_idx) {
2045 err = vp_oper->mac_idx;
2046 vp_oper->mac_idx = NO_INDX;
2047 mlx4_warn(&priv->dev,
2048 "No mac resources slave %d, port %d\n",
2049 slave, port);
2050 return err;
2051 }
2052 mlx4_dbg(&priv->dev, "alloc mac %llx idx %d slave %d port %d\n",
2053 vp_oper->state.mac, vp_oper->mac_idx, slave, port);
2054 }
2055 }
2056 return 0;
2057 }
2058
mlx4_master_deactivate_admin_state(struct mlx4_priv * priv,int slave)2059 static void mlx4_master_deactivate_admin_state(struct mlx4_priv *priv, int slave)
2060 {
2061 int p, port;
2062 struct mlx4_vport_oper_state *vp_oper;
2063 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
2064 &priv->dev, slave);
2065
2066 for_each_set_bit(p, actv_ports.ports, priv->dev.caps.num_ports) {
2067 port = p + 1;
2068 priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
2069 MLX4_VF_SMI_DISABLED;
2070 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
2071 if (NO_INDX != vp_oper->vlan_idx) {
2072 __mlx4_unregister_vlan(&priv->dev,
2073 port, vp_oper->state.default_vlan);
2074 vp_oper->vlan_idx = NO_INDX;
2075 }
2076 if (NO_INDX != vp_oper->mac_idx) {
2077 __mlx4_unregister_mac(&priv->dev, port, vp_oper->state.mac);
2078 vp_oper->mac_idx = NO_INDX;
2079 }
2080 }
2081 return;
2082 }
2083
mlx4_master_do_cmd(struct mlx4_dev * dev,int slave,u8 cmd,u16 param,u8 toggle)2084 static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd,
2085 u16 param, u8 toggle)
2086 {
2087 struct mlx4_priv *priv = mlx4_priv(dev);
2088 struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state;
2089 u32 reply;
2090 u8 is_going_down = 0;
2091 int i;
2092 unsigned long flags;
2093
2094 slave_state[slave].comm_toggle ^= 1;
2095 reply = (u32) slave_state[slave].comm_toggle << 31;
2096 if (toggle != slave_state[slave].comm_toggle) {
2097 mlx4_warn(dev, "Incorrect toggle %d from slave %d. *** MASTER STATE COMPROMISED ***\n",
2098 toggle, slave);
2099 goto reset_slave;
2100 }
2101 if (cmd == MLX4_COMM_CMD_RESET) {
2102 mlx4_warn(dev, "Received reset from slave:%d\n", slave);
2103 slave_state[slave].active = false;
2104 slave_state[slave].old_vlan_api = false;
2105 slave_state[slave].vst_qinq_supported = false;
2106 mlx4_master_deactivate_admin_state(priv, slave);
2107 for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) {
2108 slave_state[slave].event_eq[i].eqn = -1;
2109 slave_state[slave].event_eq[i].token = 0;
2110 }
2111 /*check if we are in the middle of FLR process,
2112 if so return "retry" status to the slave*/
2113 if (MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd)
2114 goto inform_slave_state;
2115
2116 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_SHUTDOWN, &slave);
2117
2118 /* write the version in the event field */
2119 reply |= mlx4_comm_get_version();
2120
2121 goto reset_slave;
2122 }
2123 /*command from slave in the middle of FLR*/
2124 if (cmd != MLX4_COMM_CMD_RESET &&
2125 MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd) {
2126 mlx4_warn(dev, "slave:%d is Trying to run cmd(0x%x) in the middle of FLR\n",
2127 slave, cmd);
2128 return;
2129 }
2130
2131 switch (cmd) {
2132 case MLX4_COMM_CMD_VHCR0:
2133 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_RESET)
2134 goto reset_slave;
2135 slave_state[slave].vhcr_dma = ((u64) param) << 48;
2136 priv->mfunc.master.slave_state[slave].cookie = 0;
2137 break;
2138 case MLX4_COMM_CMD_VHCR1:
2139 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR0)
2140 goto reset_slave;
2141 slave_state[slave].vhcr_dma |= ((u64) param) << 32;
2142 break;
2143 case MLX4_COMM_CMD_VHCR2:
2144 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR1)
2145 goto reset_slave;
2146 slave_state[slave].vhcr_dma |= ((u64) param) << 16;
2147 break;
2148 case MLX4_COMM_CMD_VHCR_EN:
2149 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR2)
2150 goto reset_slave;
2151 slave_state[slave].vhcr_dma |= param;
2152 if (mlx4_master_activate_admin_state(priv, slave))
2153 goto reset_slave;
2154 slave_state[slave].active = true;
2155 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_INIT, &slave);
2156 break;
2157 case MLX4_COMM_CMD_VHCR_POST:
2158 if ((slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_EN) &&
2159 (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_POST)) {
2160 mlx4_warn(dev, "slave:%d is out of sync, cmd=0x%x, last command=0x%x, reset is needed\n",
2161 slave, cmd, slave_state[slave].last_cmd);
2162 goto reset_slave;
2163 }
2164
2165 mutex_lock(&priv->cmd.slave_cmd_mutex);
2166 if (mlx4_master_process_vhcr(dev, slave, NULL)) {
2167 mlx4_err(dev, "Failed processing vhcr for slave:%d, resetting slave\n",
2168 slave);
2169 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2170 goto reset_slave;
2171 }
2172 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2173 break;
2174 default:
2175 mlx4_warn(dev, "Bad comm cmd:%d from slave:%d\n", cmd, slave);
2176 goto reset_slave;
2177 }
2178 spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
2179 if (!slave_state[slave].is_slave_going_down)
2180 slave_state[slave].last_cmd = cmd;
2181 else
2182 is_going_down = 1;
2183 spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
2184 if (is_going_down) {
2185 mlx4_warn(dev, "Slave is going down aborting command(%d) executing from slave:%d\n",
2186 cmd, slave);
2187 return;
2188 }
2189 __raw_writel((__force u32) cpu_to_be32(reply),
2190 &priv->mfunc.comm[slave].slave_read);
2191
2192 return;
2193
2194 reset_slave:
2195 /* cleanup any slave resources */
2196 if (dev->persist->interface_state & MLX4_INTERFACE_STATE_UP)
2197 mlx4_delete_all_resources_for_slave(dev, slave);
2198
2199 if (cmd != MLX4_COMM_CMD_RESET) {
2200 mlx4_warn(dev, "Turn on internal error to force reset, slave=%d, cmd=0x%x\n",
2201 slave, cmd);
2202 /* Turn on internal error letting slave reset itself immeditaly,
2203 * otherwise it might take till timeout on command is passed
2204 */
2205 reply |= ((u32)COMM_CHAN_EVENT_INTERNAL_ERR);
2206 }
2207
2208 spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
2209 if (!slave_state[slave].is_slave_going_down)
2210 slave_state[slave].last_cmd = MLX4_COMM_CMD_RESET;
2211 spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
2212 /*with slave in the middle of flr, no need to clean resources again.*/
2213 inform_slave_state:
2214 memset(&slave_state[slave].event_eq, 0,
2215 sizeof(struct mlx4_slave_event_eq_info));
2216 __raw_writel((__force u32) cpu_to_be32(reply),
2217 &priv->mfunc.comm[slave].slave_read);
2218 wmb();
2219 }
2220
2221 /* master command processing */
mlx4_master_comm_channel(struct work_struct * work)2222 void mlx4_master_comm_channel(struct work_struct *work)
2223 {
2224 struct mlx4_mfunc_master_ctx *master =
2225 container_of(work,
2226 struct mlx4_mfunc_master_ctx,
2227 comm_work);
2228 struct mlx4_mfunc *mfunc =
2229 container_of(master, struct mlx4_mfunc, master);
2230 struct mlx4_priv *priv =
2231 container_of(mfunc, struct mlx4_priv, mfunc);
2232 struct mlx4_dev *dev = &priv->dev;
2233 u32 lbit_vec[COMM_CHANNEL_BIT_ARRAY_SIZE];
2234 u32 nmbr_bits;
2235 u32 comm_cmd;
2236 int i, slave;
2237 int toggle;
2238 bool first = true;
2239 int served = 0;
2240 int reported = 0;
2241 u32 slt;
2242
2243 for (i = 0; i < COMM_CHANNEL_BIT_ARRAY_SIZE; i++)
2244 lbit_vec[i] = be32_to_cpu(master->comm_arm_bit_vector[i]);
2245 nmbr_bits = dev->persist->num_vfs + 1;
2246 if (++master->next_slave >= nmbr_bits)
2247 master->next_slave = 0;
2248 slave = master->next_slave;
2249 while (true) {
2250 slave = find_next_bit((const unsigned long *)&lbit_vec, nmbr_bits, slave);
2251 if (!first && slave >= master->next_slave)
2252 break;
2253 if (slave == nmbr_bits) {
2254 if (!first)
2255 break;
2256 first = false;
2257 slave = 0;
2258 continue;
2259 }
2260 ++reported;
2261 comm_cmd = swab32(readl(&mfunc->comm[slave].slave_write));
2262 slt = swab32(readl(&mfunc->comm[slave].slave_read)) >> 31;
2263 toggle = comm_cmd >> 31;
2264 if (toggle != slt) {
2265 if (master->slave_state[slave].comm_toggle
2266 != slt) {
2267 pr_info("slave %d out of sync. read toggle %d, state toggle %d. Resynching.\n",
2268 slave, slt,
2269 master->slave_state[slave].comm_toggle);
2270 master->slave_state[slave].comm_toggle =
2271 slt;
2272 }
2273 mlx4_master_do_cmd(dev, slave,
2274 comm_cmd >> 16 & 0xff,
2275 comm_cmd & 0xffff, toggle);
2276 ++served;
2277 }
2278 slave++;
2279 }
2280
2281 if (reported && reported != served)
2282 mlx4_warn(dev, "Got command event with bitmask from %d slaves but %d were served\n",
2283 reported, served);
2284
2285 if (mlx4_ARM_COMM_CHANNEL(dev))
2286 mlx4_warn(dev, "Failed to arm comm channel events\n");
2287 }
2288
sync_toggles(struct mlx4_dev * dev)2289 static int sync_toggles(struct mlx4_dev *dev)
2290 {
2291 struct mlx4_priv *priv = mlx4_priv(dev);
2292 u32 wr_toggle;
2293 u32 rd_toggle;
2294 unsigned long end;
2295
2296 wr_toggle = swab32(readl(&priv->mfunc.comm->slave_write));
2297 if (wr_toggle == 0xffffffff)
2298 end = jiffies + msecs_to_jiffies(30000);
2299 else
2300 end = jiffies + msecs_to_jiffies(5000);
2301
2302 while (time_before(jiffies, end)) {
2303 rd_toggle = swab32(readl(&priv->mfunc.comm->slave_read));
2304 if (wr_toggle == 0xffffffff || rd_toggle == 0xffffffff) {
2305 /* PCI might be offline */
2306
2307 /* If device removal has been requested,
2308 * do not continue retrying.
2309 */
2310 if (dev->persist->interface_state &
2311 MLX4_INTERFACE_STATE_NOWAIT) {
2312 mlx4_warn(dev,
2313 "communication channel is offline\n");
2314 return -EIO;
2315 }
2316
2317 msleep(100);
2318 wr_toggle = swab32(readl(&priv->mfunc.comm->
2319 slave_write));
2320 continue;
2321 }
2322
2323 if (rd_toggle >> 31 == wr_toggle >> 31) {
2324 priv->cmd.comm_toggle = rd_toggle >> 31;
2325 return 0;
2326 }
2327
2328 cond_resched();
2329 }
2330
2331 /*
2332 * we could reach here if for example the previous VM using this
2333 * function misbehaved and left the channel with unsynced state. We
2334 * should fix this here and give this VM a chance to use a properly
2335 * synced channel
2336 */
2337 mlx4_warn(dev, "recovering from previously mis-behaved VM\n");
2338 __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_read);
2339 __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_write);
2340 priv->cmd.comm_toggle = 0;
2341
2342 return 0;
2343 }
2344
mlx4_multi_func_init(struct mlx4_dev * dev)2345 int mlx4_multi_func_init(struct mlx4_dev *dev)
2346 {
2347 struct mlx4_priv *priv = mlx4_priv(dev);
2348 struct mlx4_slave_state *s_state;
2349 int i, j, err, port;
2350
2351 if (mlx4_is_master(dev))
2352 priv->mfunc.comm =
2353 ioremap(pci_resource_start(dev->persist->pdev,
2354 priv->fw.comm_bar) +
2355 priv->fw.comm_base, MLX4_COMM_PAGESIZE);
2356 else
2357 priv->mfunc.comm =
2358 ioremap(pci_resource_start(dev->persist->pdev, 2) +
2359 MLX4_SLAVE_COMM_BASE, MLX4_COMM_PAGESIZE);
2360 if (!priv->mfunc.comm) {
2361 mlx4_err(dev, "Couldn't map communication vector\n");
2362 goto err_vhcr;
2363 }
2364
2365 if (mlx4_is_master(dev)) {
2366 struct mlx4_vf_oper_state *vf_oper;
2367 struct mlx4_vf_admin_state *vf_admin;
2368
2369 priv->mfunc.master.slave_state =
2370 kcalloc(dev->num_slaves,
2371 sizeof(struct mlx4_slave_state),
2372 GFP_KERNEL);
2373 if (!priv->mfunc.master.slave_state)
2374 goto err_comm;
2375
2376 priv->mfunc.master.vf_admin =
2377 kcalloc(dev->num_slaves,
2378 sizeof(struct mlx4_vf_admin_state),
2379 GFP_KERNEL);
2380 if (!priv->mfunc.master.vf_admin)
2381 goto err_comm_admin;
2382
2383 priv->mfunc.master.vf_oper =
2384 kcalloc(dev->num_slaves,
2385 sizeof(struct mlx4_vf_oper_state),
2386 GFP_KERNEL);
2387 if (!priv->mfunc.master.vf_oper)
2388 goto err_comm_oper;
2389
2390 priv->mfunc.master.next_slave = 0;
2391
2392 for (i = 0; i < dev->num_slaves; ++i) {
2393 vf_admin = &priv->mfunc.master.vf_admin[i];
2394 vf_oper = &priv->mfunc.master.vf_oper[i];
2395 s_state = &priv->mfunc.master.slave_state[i];
2396 s_state->last_cmd = MLX4_COMM_CMD_RESET;
2397 s_state->vst_qinq_supported = false;
2398 mutex_init(&priv->mfunc.master.gen_eqe_mutex[i]);
2399 for (j = 0; j < MLX4_EVENT_TYPES_NUM; ++j)
2400 s_state->event_eq[j].eqn = -1;
2401 __raw_writel((__force u32) 0,
2402 &priv->mfunc.comm[i].slave_write);
2403 __raw_writel((__force u32) 0,
2404 &priv->mfunc.comm[i].slave_read);
2405 for (port = 1; port <= MLX4_MAX_PORTS; port++) {
2406 struct mlx4_vport_state *admin_vport;
2407 struct mlx4_vport_state *oper_vport;
2408
2409 s_state->vlan_filter[port] =
2410 kzalloc(sizeof(struct mlx4_vlan_fltr),
2411 GFP_KERNEL);
2412 if (!s_state->vlan_filter[port]) {
2413 if (--port)
2414 kfree(s_state->vlan_filter[port]);
2415 goto err_slaves;
2416 }
2417
2418 admin_vport = &vf_admin->vport[port];
2419 oper_vport = &vf_oper->vport[port].state;
2420 INIT_LIST_HEAD(&s_state->mcast_filters[port]);
2421 admin_vport->default_vlan = MLX4_VGT;
2422 oper_vport->default_vlan = MLX4_VGT;
2423 admin_vport->qos_vport =
2424 MLX4_VPP_DEFAULT_VPORT;
2425 oper_vport->qos_vport = MLX4_VPP_DEFAULT_VPORT;
2426 admin_vport->vlan_proto = htons(ETH_P_8021Q);
2427 oper_vport->vlan_proto = htons(ETH_P_8021Q);
2428 vf_oper->vport[port].vlan_idx = NO_INDX;
2429 vf_oper->vport[port].mac_idx = NO_INDX;
2430 mlx4_set_random_admin_guid(dev, i, port);
2431 }
2432 spin_lock_init(&s_state->lock);
2433 }
2434
2435 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP) {
2436 for (port = 1; port <= dev->caps.num_ports; port++) {
2437 if (mlx4_is_eth(dev, port)) {
2438 mlx4_set_default_port_qos(dev, port);
2439 mlx4_allocate_port_vpps(dev, port);
2440 }
2441 }
2442 }
2443
2444 memset(&priv->mfunc.master.cmd_eqe, 0, sizeof(struct mlx4_eqe));
2445 priv->mfunc.master.cmd_eqe.type = MLX4_EVENT_TYPE_CMD;
2446 INIT_WORK(&priv->mfunc.master.comm_work,
2447 mlx4_master_comm_channel);
2448 INIT_WORK(&priv->mfunc.master.slave_event_work,
2449 mlx4_gen_slave_eqe);
2450 INIT_WORK(&priv->mfunc.master.slave_flr_event_work,
2451 mlx4_master_handle_slave_flr);
2452 spin_lock_init(&priv->mfunc.master.slave_state_lock);
2453 spin_lock_init(&priv->mfunc.master.slave_eq.event_lock);
2454 priv->mfunc.master.comm_wq =
2455 create_singlethread_workqueue("mlx4_comm");
2456 if (!priv->mfunc.master.comm_wq)
2457 goto err_slaves;
2458
2459 if (mlx4_init_resource_tracker(dev))
2460 goto err_thread;
2461
2462 } else {
2463 err = sync_toggles(dev);
2464 if (err) {
2465 mlx4_err(dev, "Couldn't sync toggles\n");
2466 goto err_comm;
2467 }
2468 }
2469 return 0;
2470
2471 err_thread:
2472 destroy_workqueue(priv->mfunc.master.comm_wq);
2473 err_slaves:
2474 while (i--) {
2475 for (port = 1; port <= MLX4_MAX_PORTS; port++)
2476 kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2477 }
2478 kfree(priv->mfunc.master.vf_oper);
2479 err_comm_oper:
2480 kfree(priv->mfunc.master.vf_admin);
2481 err_comm_admin:
2482 kfree(priv->mfunc.master.slave_state);
2483 err_comm:
2484 iounmap(priv->mfunc.comm);
2485 priv->mfunc.comm = NULL;
2486 err_vhcr:
2487 dma_free_coherent(&dev->persist->pdev->dev, PAGE_SIZE,
2488 priv->mfunc.vhcr,
2489 priv->mfunc.vhcr_dma);
2490 priv->mfunc.vhcr = NULL;
2491 return -ENOMEM;
2492 }
2493
mlx4_cmd_init(struct mlx4_dev * dev)2494 int mlx4_cmd_init(struct mlx4_dev *dev)
2495 {
2496 struct mlx4_priv *priv = mlx4_priv(dev);
2497 int flags = 0;
2498
2499 if (!priv->cmd.initialized) {
2500 init_rwsem(&priv->cmd.switch_sem);
2501 mutex_init(&priv->cmd.slave_cmd_mutex);
2502 sema_init(&priv->cmd.poll_sem, 1);
2503 priv->cmd.use_events = 0;
2504 priv->cmd.toggle = 1;
2505 priv->cmd.initialized = 1;
2506 flags |= MLX4_CMD_CLEANUP_STRUCT;
2507 }
2508
2509 if (!mlx4_is_slave(dev) && !priv->cmd.hcr) {
2510 priv->cmd.hcr = ioremap(pci_resource_start(dev->persist->pdev,
2511 0) + MLX4_HCR_BASE, MLX4_HCR_SIZE);
2512 if (!priv->cmd.hcr) {
2513 mlx4_err(dev, "Couldn't map command register\n");
2514 goto err;
2515 }
2516 flags |= MLX4_CMD_CLEANUP_HCR;
2517 }
2518
2519 if (mlx4_is_mfunc(dev) && !priv->mfunc.vhcr) {
2520 priv->mfunc.vhcr = dma_alloc_coherent(&dev->persist->pdev->dev,
2521 PAGE_SIZE,
2522 &priv->mfunc.vhcr_dma,
2523 GFP_KERNEL);
2524 if (!priv->mfunc.vhcr)
2525 goto err;
2526
2527 flags |= MLX4_CMD_CLEANUP_VHCR;
2528 }
2529
2530 if (!priv->cmd.pool) {
2531 priv->cmd.pool = dma_pool_create("mlx4_cmd",
2532 &dev->persist->pdev->dev,
2533 MLX4_MAILBOX_SIZE,
2534 MLX4_MAILBOX_SIZE, 0);
2535 if (!priv->cmd.pool)
2536 goto err;
2537
2538 flags |= MLX4_CMD_CLEANUP_POOL;
2539 }
2540
2541 return 0;
2542
2543 err:
2544 mlx4_cmd_cleanup(dev, flags);
2545 return -ENOMEM;
2546 }
2547
mlx4_report_internal_err_comm_event(struct mlx4_dev * dev)2548 void mlx4_report_internal_err_comm_event(struct mlx4_dev *dev)
2549 {
2550 struct mlx4_priv *priv = mlx4_priv(dev);
2551 int slave;
2552 u32 slave_read;
2553
2554 /* If the comm channel has not yet been initialized,
2555 * skip reporting the internal error event to all
2556 * the communication channels.
2557 */
2558 if (!priv->mfunc.comm)
2559 return;
2560
2561 /* Report an internal error event to all
2562 * communication channels.
2563 */
2564 for (slave = 0; slave < dev->num_slaves; slave++) {
2565 slave_read = swab32(readl(&priv->mfunc.comm[slave].slave_read));
2566 slave_read |= (u32)COMM_CHAN_EVENT_INTERNAL_ERR;
2567 __raw_writel((__force u32)cpu_to_be32(slave_read),
2568 &priv->mfunc.comm[slave].slave_read);
2569 }
2570 }
2571
mlx4_multi_func_cleanup(struct mlx4_dev * dev)2572 void mlx4_multi_func_cleanup(struct mlx4_dev *dev)
2573 {
2574 struct mlx4_priv *priv = mlx4_priv(dev);
2575 int i, port;
2576
2577 if (mlx4_is_master(dev)) {
2578 destroy_workqueue(priv->mfunc.master.comm_wq);
2579 for (i = 0; i < dev->num_slaves; i++) {
2580 for (port = 1; port <= MLX4_MAX_PORTS; port++)
2581 kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2582 }
2583 kfree(priv->mfunc.master.slave_state);
2584 kfree(priv->mfunc.master.vf_admin);
2585 kfree(priv->mfunc.master.vf_oper);
2586 dev->num_slaves = 0;
2587 }
2588
2589 iounmap(priv->mfunc.comm);
2590 priv->mfunc.comm = NULL;
2591 }
2592
mlx4_cmd_cleanup(struct mlx4_dev * dev,int cleanup_mask)2593 void mlx4_cmd_cleanup(struct mlx4_dev *dev, int cleanup_mask)
2594 {
2595 struct mlx4_priv *priv = mlx4_priv(dev);
2596
2597 if (priv->cmd.pool && (cleanup_mask & MLX4_CMD_CLEANUP_POOL)) {
2598 dma_pool_destroy(priv->cmd.pool);
2599 priv->cmd.pool = NULL;
2600 }
2601
2602 if (!mlx4_is_slave(dev) && priv->cmd.hcr &&
2603 (cleanup_mask & MLX4_CMD_CLEANUP_HCR)) {
2604 iounmap(priv->cmd.hcr);
2605 priv->cmd.hcr = NULL;
2606 }
2607 if (mlx4_is_mfunc(dev) && priv->mfunc.vhcr &&
2608 (cleanup_mask & MLX4_CMD_CLEANUP_VHCR)) {
2609 dma_free_coherent(&dev->persist->pdev->dev, PAGE_SIZE,
2610 priv->mfunc.vhcr, priv->mfunc.vhcr_dma);
2611 priv->mfunc.vhcr = NULL;
2612 }
2613 if (priv->cmd.initialized && (cleanup_mask & MLX4_CMD_CLEANUP_STRUCT))
2614 priv->cmd.initialized = 0;
2615 }
2616
2617 /*
2618 * Switch to using events to issue FW commands (can only be called
2619 * after event queue for command events has been initialized).
2620 */
mlx4_cmd_use_events(struct mlx4_dev * dev)2621 int mlx4_cmd_use_events(struct mlx4_dev *dev)
2622 {
2623 struct mlx4_priv *priv = mlx4_priv(dev);
2624 int i;
2625 int err = 0;
2626
2627 priv->cmd.context = kmalloc_array(priv->cmd.max_cmds,
2628 sizeof(struct mlx4_cmd_context),
2629 GFP_KERNEL);
2630 if (!priv->cmd.context)
2631 return -ENOMEM;
2632
2633 if (mlx4_is_mfunc(dev))
2634 mutex_lock(&priv->cmd.slave_cmd_mutex);
2635 down_write(&priv->cmd.switch_sem);
2636 for (i = 0; i < priv->cmd.max_cmds; ++i) {
2637 priv->cmd.context[i].token = i;
2638 priv->cmd.context[i].next = i + 1;
2639 /* To support fatal error flow, initialize all
2640 * cmd contexts to allow simulating completions
2641 * with complete() at any time.
2642 */
2643 init_completion(&priv->cmd.context[i].done);
2644 }
2645
2646 priv->cmd.context[priv->cmd.max_cmds - 1].next = -1;
2647 priv->cmd.free_head = 0;
2648
2649 sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds);
2650
2651 for (priv->cmd.token_mask = 1;
2652 priv->cmd.token_mask < priv->cmd.max_cmds;
2653 priv->cmd.token_mask <<= 1)
2654 ; /* nothing */
2655 --priv->cmd.token_mask;
2656
2657 down(&priv->cmd.poll_sem);
2658 priv->cmd.use_events = 1;
2659 up_write(&priv->cmd.switch_sem);
2660 if (mlx4_is_mfunc(dev))
2661 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2662
2663 return err;
2664 }
2665
2666 /*
2667 * Switch back to polling (used when shutting down the device)
2668 */
mlx4_cmd_use_polling(struct mlx4_dev * dev)2669 void mlx4_cmd_use_polling(struct mlx4_dev *dev)
2670 {
2671 struct mlx4_priv *priv = mlx4_priv(dev);
2672 int i;
2673
2674 if (mlx4_is_mfunc(dev))
2675 mutex_lock(&priv->cmd.slave_cmd_mutex);
2676 down_write(&priv->cmd.switch_sem);
2677 priv->cmd.use_events = 0;
2678
2679 for (i = 0; i < priv->cmd.max_cmds; ++i)
2680 down(&priv->cmd.event_sem);
2681
2682 kfree(priv->cmd.context);
2683 priv->cmd.context = NULL;
2684
2685 up(&priv->cmd.poll_sem);
2686 up_write(&priv->cmd.switch_sem);
2687 if (mlx4_is_mfunc(dev))
2688 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2689 }
2690
mlx4_alloc_cmd_mailbox(struct mlx4_dev * dev)2691 struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
2692 {
2693 struct mlx4_cmd_mailbox *mailbox;
2694
2695 mailbox = kmalloc(sizeof(*mailbox), GFP_KERNEL);
2696 if (!mailbox)
2697 return ERR_PTR(-ENOMEM);
2698
2699 mailbox->buf = dma_pool_zalloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
2700 &mailbox->dma);
2701 if (!mailbox->buf) {
2702 kfree(mailbox);
2703 return ERR_PTR(-ENOMEM);
2704 }
2705
2706 return mailbox;
2707 }
2708 EXPORT_SYMBOL_GPL(mlx4_alloc_cmd_mailbox);
2709
mlx4_free_cmd_mailbox(struct mlx4_dev * dev,struct mlx4_cmd_mailbox * mailbox)2710 void mlx4_free_cmd_mailbox(struct mlx4_dev *dev,
2711 struct mlx4_cmd_mailbox *mailbox)
2712 {
2713 if (!mailbox)
2714 return;
2715
2716 dma_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
2717 kfree(mailbox);
2718 }
2719 EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox);
2720
mlx4_comm_get_version(void)2721 u32 mlx4_comm_get_version(void)
2722 {
2723 return ((u32) CMD_CHAN_IF_REV << 8) | (u32) CMD_CHAN_VER;
2724 }
2725
mlx4_get_slave_indx(struct mlx4_dev * dev,int vf)2726 static int mlx4_get_slave_indx(struct mlx4_dev *dev, int vf)
2727 {
2728 if ((vf < 0) || (vf >= dev->persist->num_vfs)) {
2729 mlx4_err(dev, "Bad vf number:%d (number of activated vf: %d)\n",
2730 vf, dev->persist->num_vfs);
2731 return -EINVAL;
2732 }
2733
2734 return vf+1;
2735 }
2736
mlx4_get_vf_indx(struct mlx4_dev * dev,int slave)2737 int mlx4_get_vf_indx(struct mlx4_dev *dev, int slave)
2738 {
2739 if (slave < 1 || slave > dev->persist->num_vfs) {
2740 mlx4_err(dev,
2741 "Bad slave number:%d (number of activated slaves: %lu)\n",
2742 slave, dev->num_slaves);
2743 return -EINVAL;
2744 }
2745 return slave - 1;
2746 }
2747
mlx4_cmd_wake_completions(struct mlx4_dev * dev)2748 void mlx4_cmd_wake_completions(struct mlx4_dev *dev)
2749 {
2750 struct mlx4_priv *priv = mlx4_priv(dev);
2751 struct mlx4_cmd_context *context;
2752 int i;
2753
2754 spin_lock(&priv->cmd.context_lock);
2755 if (priv->cmd.context) {
2756 for (i = 0; i < priv->cmd.max_cmds; ++i) {
2757 context = &priv->cmd.context[i];
2758 context->fw_status = CMD_STAT_INTERNAL_ERR;
2759 context->result =
2760 mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
2761 complete(&context->done);
2762 }
2763 }
2764 spin_unlock(&priv->cmd.context_lock);
2765 }
2766
mlx4_get_active_ports(struct mlx4_dev * dev,int slave)2767 struct mlx4_active_ports mlx4_get_active_ports(struct mlx4_dev *dev, int slave)
2768 {
2769 struct mlx4_active_ports actv_ports;
2770 int vf;
2771
2772 bitmap_zero(actv_ports.ports, MLX4_MAX_PORTS);
2773
2774 if (slave == 0) {
2775 bitmap_fill(actv_ports.ports, dev->caps.num_ports);
2776 return actv_ports;
2777 }
2778
2779 vf = mlx4_get_vf_indx(dev, slave);
2780 if (vf < 0)
2781 return actv_ports;
2782
2783 bitmap_set(actv_ports.ports, dev->dev_vfs[vf].min_port - 1,
2784 min((int)dev->dev_vfs[mlx4_get_vf_indx(dev, slave)].n_ports,
2785 dev->caps.num_ports));
2786
2787 return actv_ports;
2788 }
2789 EXPORT_SYMBOL_GPL(mlx4_get_active_ports);
2790
mlx4_slave_convert_port(struct mlx4_dev * dev,int slave,int port)2791 int mlx4_slave_convert_port(struct mlx4_dev *dev, int slave, int port)
2792 {
2793 unsigned n;
2794 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2795 unsigned m = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2796
2797 if (port <= 0 || port > m)
2798 return -EINVAL;
2799
2800 n = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2801 if (port <= n)
2802 port = n + 1;
2803
2804 return port;
2805 }
2806 EXPORT_SYMBOL_GPL(mlx4_slave_convert_port);
2807
mlx4_phys_to_slave_port(struct mlx4_dev * dev,int slave,int port)2808 int mlx4_phys_to_slave_port(struct mlx4_dev *dev, int slave, int port)
2809 {
2810 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2811 if (test_bit(port - 1, actv_ports.ports))
2812 return port -
2813 find_first_bit(actv_ports.ports, dev->caps.num_ports);
2814
2815 return -1;
2816 }
2817 EXPORT_SYMBOL_GPL(mlx4_phys_to_slave_port);
2818
mlx4_phys_to_slaves_pport(struct mlx4_dev * dev,int port)2819 struct mlx4_slaves_pport mlx4_phys_to_slaves_pport(struct mlx4_dev *dev,
2820 int port)
2821 {
2822 unsigned i;
2823 struct mlx4_slaves_pport slaves_pport;
2824
2825 bitmap_zero(slaves_pport.slaves, MLX4_MFUNC_MAX);
2826
2827 if (port <= 0 || port > dev->caps.num_ports)
2828 return slaves_pport;
2829
2830 for (i = 0; i < dev->persist->num_vfs + 1; i++) {
2831 struct mlx4_active_ports actv_ports =
2832 mlx4_get_active_ports(dev, i);
2833 if (test_bit(port - 1, actv_ports.ports))
2834 set_bit(i, slaves_pport.slaves);
2835 }
2836
2837 return slaves_pport;
2838 }
2839 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport);
2840
mlx4_phys_to_slaves_pport_actv(struct mlx4_dev * dev,const struct mlx4_active_ports * crit_ports)2841 struct mlx4_slaves_pport mlx4_phys_to_slaves_pport_actv(
2842 struct mlx4_dev *dev,
2843 const struct mlx4_active_ports *crit_ports)
2844 {
2845 unsigned i;
2846 struct mlx4_slaves_pport slaves_pport;
2847
2848 bitmap_zero(slaves_pport.slaves, MLX4_MFUNC_MAX);
2849
2850 for (i = 0; i < dev->persist->num_vfs + 1; i++) {
2851 struct mlx4_active_ports actv_ports =
2852 mlx4_get_active_ports(dev, i);
2853 if (bitmap_equal(crit_ports->ports, actv_ports.ports,
2854 dev->caps.num_ports))
2855 set_bit(i, slaves_pport.slaves);
2856 }
2857
2858 return slaves_pport;
2859 }
2860 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport_actv);
2861
mlx4_slaves_closest_port(struct mlx4_dev * dev,int slave,int port)2862 static int mlx4_slaves_closest_port(struct mlx4_dev *dev, int slave, int port)
2863 {
2864 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2865 int min_port = find_first_bit(actv_ports.ports, dev->caps.num_ports)
2866 + 1;
2867 int max_port = min_port +
2868 bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2869
2870 if (port < min_port)
2871 port = min_port;
2872 else if (port >= max_port)
2873 port = max_port - 1;
2874
2875 return port;
2876 }
2877
mlx4_set_vport_qos(struct mlx4_priv * priv,int slave,int port,int max_tx_rate)2878 static int mlx4_set_vport_qos(struct mlx4_priv *priv, int slave, int port,
2879 int max_tx_rate)
2880 {
2881 int i;
2882 int err;
2883 struct mlx4_qos_manager *port_qos;
2884 struct mlx4_dev *dev = &priv->dev;
2885 struct mlx4_vport_qos_param vpp_qos[MLX4_NUM_UP];
2886
2887 port_qos = &priv->mfunc.master.qos_ctl[port];
2888 memset(vpp_qos, 0, sizeof(struct mlx4_vport_qos_param) * MLX4_NUM_UP);
2889
2890 if (slave > port_qos->num_of_qos_vfs) {
2891 mlx4_info(dev, "No available VPP resources for this VF\n");
2892 return -EINVAL;
2893 }
2894
2895 /* Query for default QoS values from Vport 0 is needed */
2896 err = mlx4_SET_VPORT_QOS_get(dev, port, 0, vpp_qos);
2897 if (err) {
2898 mlx4_info(dev, "Failed to query Vport 0 QoS values\n");
2899 return err;
2900 }
2901
2902 for (i = 0; i < MLX4_NUM_UP; i++) {
2903 if (test_bit(i, port_qos->priority_bm) && max_tx_rate) {
2904 vpp_qos[i].max_avg_bw = max_tx_rate;
2905 vpp_qos[i].enable = 1;
2906 } else {
2907 /* if user supplied tx_rate == 0, meaning no rate limit
2908 * configuration is required. so we are leaving the
2909 * value of max_avg_bw as queried from Vport 0.
2910 */
2911 vpp_qos[i].enable = 0;
2912 }
2913 }
2914
2915 err = mlx4_SET_VPORT_QOS_set(dev, port, slave, vpp_qos);
2916 if (err) {
2917 mlx4_info(dev, "Failed to set Vport %d QoS values\n", slave);
2918 return err;
2919 }
2920
2921 return 0;
2922 }
2923
mlx4_is_vf_vst_and_prio_qos(struct mlx4_dev * dev,int port,struct mlx4_vport_state * vf_admin)2924 static bool mlx4_is_vf_vst_and_prio_qos(struct mlx4_dev *dev, int port,
2925 struct mlx4_vport_state *vf_admin)
2926 {
2927 struct mlx4_qos_manager *info;
2928 struct mlx4_priv *priv = mlx4_priv(dev);
2929
2930 if (!mlx4_is_master(dev) ||
2931 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP))
2932 return false;
2933
2934 info = &priv->mfunc.master.qos_ctl[port];
2935
2936 if (vf_admin->default_vlan != MLX4_VGT &&
2937 test_bit(vf_admin->default_qos, info->priority_bm))
2938 return true;
2939
2940 return false;
2941 }
2942
mlx4_valid_vf_state_change(struct mlx4_dev * dev,int port,struct mlx4_vport_state * vf_admin,int vlan,int qos)2943 static bool mlx4_valid_vf_state_change(struct mlx4_dev *dev, int port,
2944 struct mlx4_vport_state *vf_admin,
2945 int vlan, int qos)
2946 {
2947 struct mlx4_vport_state dummy_admin = {0};
2948
2949 if (!mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin) ||
2950 !vf_admin->tx_rate)
2951 return true;
2952
2953 dummy_admin.default_qos = qos;
2954 dummy_admin.default_vlan = vlan;
2955
2956 /* VF wants to move to other VST state which is valid with current
2957 * rate limit. Either differnt default vlan in VST or other
2958 * supported QoS priority. Otherwise we don't allow this change when
2959 * the TX rate is still configured.
2960 */
2961 if (mlx4_is_vf_vst_and_prio_qos(dev, port, &dummy_admin))
2962 return true;
2963
2964 mlx4_info(dev, "Cannot change VF state to %s while rate is set\n",
2965 (vlan == MLX4_VGT) ? "VGT" : "VST");
2966
2967 if (vlan != MLX4_VGT)
2968 mlx4_info(dev, "VST priority %d not supported for QoS\n", qos);
2969
2970 mlx4_info(dev, "Please set rate to 0 prior to this VF state change\n");
2971
2972 return false;
2973 }
2974
mlx4_set_vf_mac(struct mlx4_dev * dev,int port,int vf,u8 * mac)2975 int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u8 *mac)
2976 {
2977 struct mlx4_priv *priv = mlx4_priv(dev);
2978 struct mlx4_vport_state *s_info;
2979 int slave;
2980
2981 if (!mlx4_is_master(dev))
2982 return -EPROTONOSUPPORT;
2983
2984 if (is_multicast_ether_addr(mac))
2985 return -EINVAL;
2986
2987 slave = mlx4_get_slave_indx(dev, vf);
2988 if (slave < 0)
2989 return -EINVAL;
2990
2991 port = mlx4_slaves_closest_port(dev, slave, port);
2992 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2993
2994 if (s_info->spoofchk && is_zero_ether_addr(mac)) {
2995 mlx4_info(dev, "MAC invalidation is not allowed when spoofchk is on\n");
2996 return -EPERM;
2997 }
2998
2999 s_info->mac = ether_addr_to_u64(mac);
3000 mlx4_info(dev, "default mac on vf %d port %d to %llX will take effect only after vf restart\n",
3001 vf, port, s_info->mac);
3002 return 0;
3003 }
3004 EXPORT_SYMBOL_GPL(mlx4_set_vf_mac);
3005
3006
mlx4_set_vf_vlan(struct mlx4_dev * dev,int port,int vf,u16 vlan,u8 qos,__be16 proto)3007 int mlx4_set_vf_vlan(struct mlx4_dev *dev, int port, int vf, u16 vlan, u8 qos,
3008 __be16 proto)
3009 {
3010 struct mlx4_priv *priv = mlx4_priv(dev);
3011 struct mlx4_vport_state *vf_admin;
3012 struct mlx4_slave_state *slave_state;
3013 struct mlx4_vport_oper_state *vf_oper;
3014 int slave;
3015
3016 if ((!mlx4_is_master(dev)) ||
3017 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VLAN_CONTROL))
3018 return -EPROTONOSUPPORT;
3019
3020 if ((vlan > 4095) || (qos > 7))
3021 return -EINVAL;
3022
3023 if (proto == htons(ETH_P_8021AD) &&
3024 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SVLAN_BY_QP))
3025 return -EPROTONOSUPPORT;
3026
3027 if (proto != htons(ETH_P_8021Q) &&
3028 proto != htons(ETH_P_8021AD))
3029 return -EINVAL;
3030
3031 if ((proto == htons(ETH_P_8021AD)) &&
3032 ((vlan == 0) || (vlan == MLX4_VGT)))
3033 return -EINVAL;
3034
3035 slave = mlx4_get_slave_indx(dev, vf);
3036 if (slave < 0)
3037 return -EINVAL;
3038
3039 slave_state = &priv->mfunc.master.slave_state[slave];
3040 if ((proto == htons(ETH_P_8021AD)) && (slave_state->active) &&
3041 (!slave_state->vst_qinq_supported)) {
3042 mlx4_err(dev, "vf %d does not support VST QinQ mode\n", vf);
3043 return -EPROTONOSUPPORT;
3044 }
3045 port = mlx4_slaves_closest_port(dev, slave, port);
3046 vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
3047 vf_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
3048
3049 if (!mlx4_valid_vf_state_change(dev, port, vf_admin, vlan, qos))
3050 return -EPERM;
3051
3052 if ((0 == vlan) && (0 == qos))
3053 vf_admin->default_vlan = MLX4_VGT;
3054 else
3055 vf_admin->default_vlan = vlan;
3056 vf_admin->default_qos = qos;
3057 vf_admin->vlan_proto = proto;
3058
3059 /* If rate was configured prior to VST, we saved the configured rate
3060 * in vf_admin->rate and now, if priority supported we enforce the QoS
3061 */
3062 if (mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin) &&
3063 vf_admin->tx_rate)
3064 vf_admin->qos_vport = slave;
3065
3066 /* Try to activate new vf state without restart,
3067 * this option is not supported while moving to VST QinQ mode.
3068 */
3069 if ((proto == htons(ETH_P_8021AD) &&
3070 vf_oper->state.vlan_proto != proto) ||
3071 mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
3072 mlx4_info(dev,
3073 "updating vf %d port %d config will take effect on next VF restart\n",
3074 vf, port);
3075 return 0;
3076 }
3077 EXPORT_SYMBOL_GPL(mlx4_set_vf_vlan);
3078
mlx4_set_vf_rate(struct mlx4_dev * dev,int port,int vf,int min_tx_rate,int max_tx_rate)3079 int mlx4_set_vf_rate(struct mlx4_dev *dev, int port, int vf, int min_tx_rate,
3080 int max_tx_rate)
3081 {
3082 int err;
3083 int slave;
3084 struct mlx4_vport_state *vf_admin;
3085 struct mlx4_priv *priv = mlx4_priv(dev);
3086
3087 if (!mlx4_is_master(dev) ||
3088 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP))
3089 return -EPROTONOSUPPORT;
3090
3091 if (min_tx_rate) {
3092 mlx4_info(dev, "Minimum BW share not supported\n");
3093 return -EPROTONOSUPPORT;
3094 }
3095
3096 slave = mlx4_get_slave_indx(dev, vf);
3097 if (slave < 0)
3098 return -EINVAL;
3099
3100 port = mlx4_slaves_closest_port(dev, slave, port);
3101 vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
3102
3103 err = mlx4_set_vport_qos(priv, slave, port, max_tx_rate);
3104 if (err) {
3105 mlx4_info(dev, "vf %d failed to set rate %d\n", vf,
3106 max_tx_rate);
3107 return err;
3108 }
3109
3110 vf_admin->tx_rate = max_tx_rate;
3111 /* if VF is not in supported mode (VST with supported prio),
3112 * we do not change vport configuration for its QPs, but save
3113 * the rate, so it will be enforced when it moves to supported
3114 * mode next time.
3115 */
3116 if (!mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin)) {
3117 mlx4_info(dev,
3118 "rate set for VF %d when not in valid state\n", vf);
3119
3120 if (vf_admin->default_vlan != MLX4_VGT)
3121 mlx4_info(dev, "VST priority not supported by QoS\n");
3122 else
3123 mlx4_info(dev, "VF in VGT mode (needed VST)\n");
3124
3125 mlx4_info(dev,
3126 "rate %d take affect when VF moves to valid state\n",
3127 max_tx_rate);
3128 return 0;
3129 }
3130
3131 /* If user sets rate 0 assigning default vport for its QPs */
3132 vf_admin->qos_vport = max_tx_rate ? slave : MLX4_VPP_DEFAULT_VPORT;
3133
3134 if (priv->mfunc.master.slave_state[slave].active &&
3135 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP)
3136 mlx4_master_immediate_activate_vlan_qos(priv, slave, port);
3137
3138 return 0;
3139 }
3140 EXPORT_SYMBOL_GPL(mlx4_set_vf_rate);
3141
3142 /* mlx4_get_slave_default_vlan -
3143 * return true if VST ( default vlan)
3144 * if VST, will return vlan & qos (if not NULL)
3145 */
mlx4_get_slave_default_vlan(struct mlx4_dev * dev,int port,int slave,u16 * vlan,u8 * qos)3146 bool mlx4_get_slave_default_vlan(struct mlx4_dev *dev, int port, int slave,
3147 u16 *vlan, u8 *qos)
3148 {
3149 struct mlx4_vport_oper_state *vp_oper;
3150 struct mlx4_priv *priv;
3151
3152 priv = mlx4_priv(dev);
3153 port = mlx4_slaves_closest_port(dev, slave, port);
3154 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
3155
3156 if (MLX4_VGT != vp_oper->state.default_vlan) {
3157 if (vlan)
3158 *vlan = vp_oper->state.default_vlan;
3159 if (qos)
3160 *qos = vp_oper->state.default_qos;
3161 return true;
3162 }
3163 return false;
3164 }
3165 EXPORT_SYMBOL_GPL(mlx4_get_slave_default_vlan);
3166
mlx4_set_vf_spoofchk(struct mlx4_dev * dev,int port,int vf,bool setting)3167 int mlx4_set_vf_spoofchk(struct mlx4_dev *dev, int port, int vf, bool setting)
3168 {
3169 struct mlx4_priv *priv = mlx4_priv(dev);
3170 struct mlx4_vport_state *s_info;
3171 int slave;
3172 u8 mac[ETH_ALEN];
3173
3174 if ((!mlx4_is_master(dev)) ||
3175 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FSM))
3176 return -EPROTONOSUPPORT;
3177
3178 slave = mlx4_get_slave_indx(dev, vf);
3179 if (slave < 0)
3180 return -EINVAL;
3181
3182 port = mlx4_slaves_closest_port(dev, slave, port);
3183 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3184
3185 u64_to_ether_addr(s_info->mac, mac);
3186 if (setting && !is_valid_ether_addr(mac)) {
3187 mlx4_info(dev, "Illegal MAC with spoofchk\n");
3188 return -EPERM;
3189 }
3190
3191 s_info->spoofchk = setting;
3192
3193 return 0;
3194 }
3195 EXPORT_SYMBOL_GPL(mlx4_set_vf_spoofchk);
3196
mlx4_get_vf_config(struct mlx4_dev * dev,int port,int vf,struct ifla_vf_info * ivf)3197 int mlx4_get_vf_config(struct mlx4_dev *dev, int port, int vf, struct ifla_vf_info *ivf)
3198 {
3199 struct mlx4_priv *priv = mlx4_priv(dev);
3200 struct mlx4_vport_state *s_info;
3201 int slave;
3202
3203 if (!mlx4_is_master(dev))
3204 return -EPROTONOSUPPORT;
3205
3206 slave = mlx4_get_slave_indx(dev, vf);
3207 if (slave < 0)
3208 return -EINVAL;
3209
3210 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3211 ivf->vf = vf;
3212
3213 /* need to convert it to a func */
3214 ivf->mac[0] = ((s_info->mac >> (5*8)) & 0xff);
3215 ivf->mac[1] = ((s_info->mac >> (4*8)) & 0xff);
3216 ivf->mac[2] = ((s_info->mac >> (3*8)) & 0xff);
3217 ivf->mac[3] = ((s_info->mac >> (2*8)) & 0xff);
3218 ivf->mac[4] = ((s_info->mac >> (1*8)) & 0xff);
3219 ivf->mac[5] = ((s_info->mac) & 0xff);
3220
3221 ivf->vlan = s_info->default_vlan;
3222 ivf->qos = s_info->default_qos;
3223 ivf->vlan_proto = s_info->vlan_proto;
3224
3225 if (mlx4_is_vf_vst_and_prio_qos(dev, port, s_info))
3226 ivf->max_tx_rate = s_info->tx_rate;
3227 else
3228 ivf->max_tx_rate = 0;
3229
3230 ivf->min_tx_rate = 0;
3231 ivf->spoofchk = s_info->spoofchk;
3232 ivf->linkstate = s_info->link_state;
3233
3234 return 0;
3235 }
3236 EXPORT_SYMBOL_GPL(mlx4_get_vf_config);
3237
mlx4_set_vf_link_state(struct mlx4_dev * dev,int port,int vf,int link_state)3238 int mlx4_set_vf_link_state(struct mlx4_dev *dev, int port, int vf, int link_state)
3239 {
3240 struct mlx4_priv *priv = mlx4_priv(dev);
3241 struct mlx4_vport_state *s_info;
3242 int slave;
3243 u8 link_stat_event;
3244
3245 slave = mlx4_get_slave_indx(dev, vf);
3246 if (slave < 0)
3247 return -EINVAL;
3248
3249 port = mlx4_slaves_closest_port(dev, slave, port);
3250 switch (link_state) {
3251 case IFLA_VF_LINK_STATE_AUTO:
3252 /* get current link state */
3253 if (!priv->sense.do_sense_port[port])
3254 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
3255 else
3256 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
3257 break;
3258
3259 case IFLA_VF_LINK_STATE_ENABLE:
3260 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
3261 break;
3262
3263 case IFLA_VF_LINK_STATE_DISABLE:
3264 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
3265 break;
3266
3267 default:
3268 mlx4_warn(dev, "unknown value for link_state %02x on slave %d port %d\n",
3269 link_state, slave, port);
3270 return -EINVAL;
3271 }
3272 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3273 s_info->link_state = link_state;
3274
3275 /* send event */
3276 mlx4_gen_port_state_change_eqe(dev, slave, port, link_stat_event);
3277
3278 if (mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
3279 mlx4_dbg(dev,
3280 "updating vf %d port %d no link state HW enforcement\n",
3281 vf, port);
3282 return 0;
3283 }
3284 EXPORT_SYMBOL_GPL(mlx4_set_vf_link_state);
3285
mlx4_get_counter_stats(struct mlx4_dev * dev,int counter_index,struct mlx4_counter * counter_stats,int reset)3286 int mlx4_get_counter_stats(struct mlx4_dev *dev, int counter_index,
3287 struct mlx4_counter *counter_stats, int reset)
3288 {
3289 struct mlx4_cmd_mailbox *mailbox = NULL;
3290 struct mlx4_counter *tmp_counter;
3291 int err;
3292 u32 if_stat_in_mod;
3293
3294 if (!counter_stats)
3295 return -EINVAL;
3296
3297 if (counter_index == MLX4_SINK_COUNTER_INDEX(dev))
3298 return 0;
3299
3300 mailbox = mlx4_alloc_cmd_mailbox(dev);
3301 if (IS_ERR(mailbox))
3302 return PTR_ERR(mailbox);
3303
3304 memset(mailbox->buf, 0, sizeof(struct mlx4_counter));
3305 if_stat_in_mod = counter_index;
3306 if (reset)
3307 if_stat_in_mod |= MLX4_QUERY_IF_STAT_RESET;
3308 err = mlx4_cmd_box(dev, 0, mailbox->dma,
3309 if_stat_in_mod, 0,
3310 MLX4_CMD_QUERY_IF_STAT,
3311 MLX4_CMD_TIME_CLASS_C,
3312 MLX4_CMD_NATIVE);
3313 if (err) {
3314 mlx4_dbg(dev, "%s: failed to read statistics for counter index %d\n",
3315 __func__, counter_index);
3316 goto if_stat_out;
3317 }
3318 tmp_counter = (struct mlx4_counter *)mailbox->buf;
3319 counter_stats->counter_mode = tmp_counter->counter_mode;
3320 if (counter_stats->counter_mode == 0) {
3321 counter_stats->rx_frames =
3322 cpu_to_be64(be64_to_cpu(counter_stats->rx_frames) +
3323 be64_to_cpu(tmp_counter->rx_frames));
3324 counter_stats->tx_frames =
3325 cpu_to_be64(be64_to_cpu(counter_stats->tx_frames) +
3326 be64_to_cpu(tmp_counter->tx_frames));
3327 counter_stats->rx_bytes =
3328 cpu_to_be64(be64_to_cpu(counter_stats->rx_bytes) +
3329 be64_to_cpu(tmp_counter->rx_bytes));
3330 counter_stats->tx_bytes =
3331 cpu_to_be64(be64_to_cpu(counter_stats->tx_bytes) +
3332 be64_to_cpu(tmp_counter->tx_bytes));
3333 }
3334
3335 if_stat_out:
3336 mlx4_free_cmd_mailbox(dev, mailbox);
3337
3338 return err;
3339 }
3340 EXPORT_SYMBOL_GPL(mlx4_get_counter_stats);
3341
mlx4_get_vf_stats(struct mlx4_dev * dev,int port,int vf_idx,struct ifla_vf_stats * vf_stats)3342 int mlx4_get_vf_stats(struct mlx4_dev *dev, int port, int vf_idx,
3343 struct ifla_vf_stats *vf_stats)
3344 {
3345 struct mlx4_counter tmp_vf_stats;
3346 int slave;
3347 int err = 0;
3348
3349 if (!vf_stats)
3350 return -EINVAL;
3351
3352 if (!mlx4_is_master(dev))
3353 return -EPROTONOSUPPORT;
3354
3355 slave = mlx4_get_slave_indx(dev, vf_idx);
3356 if (slave < 0)
3357 return -EINVAL;
3358
3359 port = mlx4_slaves_closest_port(dev, slave, port);
3360 err = mlx4_calc_vf_counters(dev, slave, port, &tmp_vf_stats);
3361 if (!err && tmp_vf_stats.counter_mode == 0) {
3362 vf_stats->rx_packets = be64_to_cpu(tmp_vf_stats.rx_frames);
3363 vf_stats->tx_packets = be64_to_cpu(tmp_vf_stats.tx_frames);
3364 vf_stats->rx_bytes = be64_to_cpu(tmp_vf_stats.rx_bytes);
3365 vf_stats->tx_bytes = be64_to_cpu(tmp_vf_stats.tx_bytes);
3366 }
3367
3368 return err;
3369 }
3370 EXPORT_SYMBOL_GPL(mlx4_get_vf_stats);
3371
mlx4_vf_smi_enabled(struct mlx4_dev * dev,int slave,int port)3372 int mlx4_vf_smi_enabled(struct mlx4_dev *dev, int slave, int port)
3373 {
3374 struct mlx4_priv *priv = mlx4_priv(dev);
3375
3376 if (slave < 1 || slave >= dev->num_slaves ||
3377 port < 1 || port > MLX4_MAX_PORTS)
3378 return 0;
3379
3380 return priv->mfunc.master.vf_oper[slave].smi_enabled[port] ==
3381 MLX4_VF_SMI_ENABLED;
3382 }
3383 EXPORT_SYMBOL_GPL(mlx4_vf_smi_enabled);
3384
mlx4_vf_get_enable_smi_admin(struct mlx4_dev * dev,int slave,int port)3385 int mlx4_vf_get_enable_smi_admin(struct mlx4_dev *dev, int slave, int port)
3386 {
3387 struct mlx4_priv *priv = mlx4_priv(dev);
3388
3389 if (slave == mlx4_master_func_num(dev))
3390 return 1;
3391
3392 if (slave < 1 || slave >= dev->num_slaves ||
3393 port < 1 || port > MLX4_MAX_PORTS)
3394 return 0;
3395
3396 return priv->mfunc.master.vf_admin[slave].enable_smi[port] ==
3397 MLX4_VF_SMI_ENABLED;
3398 }
3399 EXPORT_SYMBOL_GPL(mlx4_vf_get_enable_smi_admin);
3400
mlx4_vf_set_enable_smi_admin(struct mlx4_dev * dev,int slave,int port,int enabled)3401 int mlx4_vf_set_enable_smi_admin(struct mlx4_dev *dev, int slave, int port,
3402 int enabled)
3403 {
3404 struct mlx4_priv *priv = mlx4_priv(dev);
3405 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
3406 &priv->dev, slave);
3407 int min_port = find_first_bit(actv_ports.ports,
3408 priv->dev.caps.num_ports) + 1;
3409 int max_port = min_port - 1 +
3410 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
3411
3412 if (slave == mlx4_master_func_num(dev))
3413 return 0;
3414
3415 if (slave < 1 || slave >= dev->num_slaves ||
3416 port < 1 || port > MLX4_MAX_PORTS ||
3417 enabled < 0 || enabled > 1)
3418 return -EINVAL;
3419
3420 if (min_port == max_port && dev->caps.num_ports > 1) {
3421 mlx4_info(dev, "SMI access disallowed for single ported VFs\n");
3422 return -EPROTONOSUPPORT;
3423 }
3424
3425 priv->mfunc.master.vf_admin[slave].enable_smi[port] = enabled;
3426 return 0;
3427 }
3428 EXPORT_SYMBOL_GPL(mlx4_vf_set_enable_smi_admin);
3429