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 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 int min_port = find_first_bit(actv_ports.ports,
2005 priv->dev.caps.num_ports) + 1;
2006 int max_port = min_port - 1 +
2007 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
2008
2009 for (port = min_port; port <= max_port; port++) {
2010 if (!test_bit(port - 1, actv_ports.ports))
2011 continue;
2012 priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
2013 priv->mfunc.master.vf_admin[slave].enable_smi[port];
2014 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
2015 vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
2016 if (vp_admin->vlan_proto != htons(ETH_P_8021AD) ||
2017 slave_state->vst_qinq_supported) {
2018 vp_oper->state.vlan_proto = vp_admin->vlan_proto;
2019 vp_oper->state.default_vlan = vp_admin->default_vlan;
2020 vp_oper->state.default_qos = vp_admin->default_qos;
2021 }
2022 vp_oper->state.link_state = vp_admin->link_state;
2023 vp_oper->state.mac = vp_admin->mac;
2024 vp_oper->state.spoofchk = vp_admin->spoofchk;
2025 vp_oper->state.tx_rate = vp_admin->tx_rate;
2026 vp_oper->state.qos_vport = vp_admin->qos_vport;
2027 vp_oper->state.guid = vp_admin->guid;
2028
2029 if (MLX4_VGT != vp_admin->default_vlan) {
2030 err = __mlx4_register_vlan(&priv->dev, port,
2031 vp_admin->default_vlan, &(vp_oper->vlan_idx));
2032 if (err) {
2033 vp_oper->vlan_idx = NO_INDX;
2034 vp_oper->state.default_vlan = MLX4_VGT;
2035 vp_oper->state.vlan_proto = htons(ETH_P_8021Q);
2036 mlx4_warn(&priv->dev,
2037 "No vlan resources slave %d, port %d\n",
2038 slave, port);
2039 return err;
2040 }
2041 mlx4_dbg(&priv->dev, "alloc vlan %d idx %d slave %d port %d\n",
2042 (int)(vp_oper->state.default_vlan),
2043 vp_oper->vlan_idx, slave, port);
2044 }
2045 if (vp_admin->spoofchk) {
2046 vp_oper->mac_idx = __mlx4_register_mac(&priv->dev,
2047 port,
2048 vp_admin->mac);
2049 if (0 > vp_oper->mac_idx) {
2050 err = vp_oper->mac_idx;
2051 vp_oper->mac_idx = NO_INDX;
2052 mlx4_warn(&priv->dev,
2053 "No mac resources slave %d, port %d\n",
2054 slave, port);
2055 return err;
2056 }
2057 mlx4_dbg(&priv->dev, "alloc mac %llx idx %d slave %d port %d\n",
2058 vp_oper->state.mac, vp_oper->mac_idx, slave, port);
2059 }
2060 }
2061 return 0;
2062 }
2063
mlx4_master_deactivate_admin_state(struct mlx4_priv * priv,int slave)2064 static void mlx4_master_deactivate_admin_state(struct mlx4_priv *priv, int slave)
2065 {
2066 int port;
2067 struct mlx4_vport_oper_state *vp_oper;
2068 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
2069 &priv->dev, slave);
2070 int min_port = find_first_bit(actv_ports.ports,
2071 priv->dev.caps.num_ports) + 1;
2072 int max_port = min_port - 1 +
2073 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
2074
2075
2076 for (port = min_port; port <= max_port; port++) {
2077 if (!test_bit(port - 1, actv_ports.ports))
2078 continue;
2079 priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
2080 MLX4_VF_SMI_DISABLED;
2081 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
2082 if (NO_INDX != vp_oper->vlan_idx) {
2083 __mlx4_unregister_vlan(&priv->dev,
2084 port, vp_oper->state.default_vlan);
2085 vp_oper->vlan_idx = NO_INDX;
2086 }
2087 if (NO_INDX != vp_oper->mac_idx) {
2088 __mlx4_unregister_mac(&priv->dev, port, vp_oper->state.mac);
2089 vp_oper->mac_idx = NO_INDX;
2090 }
2091 }
2092 return;
2093 }
2094
mlx4_master_do_cmd(struct mlx4_dev * dev,int slave,u8 cmd,u16 param,u8 toggle)2095 static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd,
2096 u16 param, u8 toggle)
2097 {
2098 struct mlx4_priv *priv = mlx4_priv(dev);
2099 struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state;
2100 u32 reply;
2101 u8 is_going_down = 0;
2102 int i;
2103 unsigned long flags;
2104
2105 slave_state[slave].comm_toggle ^= 1;
2106 reply = (u32) slave_state[slave].comm_toggle << 31;
2107 if (toggle != slave_state[slave].comm_toggle) {
2108 mlx4_warn(dev, "Incorrect toggle %d from slave %d. *** MASTER STATE COMPROMISED ***\n",
2109 toggle, slave);
2110 goto reset_slave;
2111 }
2112 if (cmd == MLX4_COMM_CMD_RESET) {
2113 mlx4_warn(dev, "Received reset from slave:%d\n", slave);
2114 slave_state[slave].active = false;
2115 slave_state[slave].old_vlan_api = false;
2116 slave_state[slave].vst_qinq_supported = false;
2117 mlx4_master_deactivate_admin_state(priv, slave);
2118 for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) {
2119 slave_state[slave].event_eq[i].eqn = -1;
2120 slave_state[slave].event_eq[i].token = 0;
2121 }
2122 /*check if we are in the middle of FLR process,
2123 if so return "retry" status to the slave*/
2124 if (MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd)
2125 goto inform_slave_state;
2126
2127 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_SHUTDOWN, slave);
2128
2129 /* write the version in the event field */
2130 reply |= mlx4_comm_get_version();
2131
2132 goto reset_slave;
2133 }
2134 /*command from slave in the middle of FLR*/
2135 if (cmd != MLX4_COMM_CMD_RESET &&
2136 MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd) {
2137 mlx4_warn(dev, "slave:%d is Trying to run cmd(0x%x) in the middle of FLR\n",
2138 slave, cmd);
2139 return;
2140 }
2141
2142 switch (cmd) {
2143 case MLX4_COMM_CMD_VHCR0:
2144 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_RESET)
2145 goto reset_slave;
2146 slave_state[slave].vhcr_dma = ((u64) param) << 48;
2147 priv->mfunc.master.slave_state[slave].cookie = 0;
2148 break;
2149 case MLX4_COMM_CMD_VHCR1:
2150 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR0)
2151 goto reset_slave;
2152 slave_state[slave].vhcr_dma |= ((u64) param) << 32;
2153 break;
2154 case MLX4_COMM_CMD_VHCR2:
2155 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR1)
2156 goto reset_slave;
2157 slave_state[slave].vhcr_dma |= ((u64) param) << 16;
2158 break;
2159 case MLX4_COMM_CMD_VHCR_EN:
2160 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR2)
2161 goto reset_slave;
2162 slave_state[slave].vhcr_dma |= param;
2163 if (mlx4_master_activate_admin_state(priv, slave))
2164 goto reset_slave;
2165 slave_state[slave].active = true;
2166 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_INIT, slave);
2167 break;
2168 case MLX4_COMM_CMD_VHCR_POST:
2169 if ((slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_EN) &&
2170 (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_POST)) {
2171 mlx4_warn(dev, "slave:%d is out of sync, cmd=0x%x, last command=0x%x, reset is needed\n",
2172 slave, cmd, slave_state[slave].last_cmd);
2173 goto reset_slave;
2174 }
2175
2176 mutex_lock(&priv->cmd.slave_cmd_mutex);
2177 if (mlx4_master_process_vhcr(dev, slave, NULL)) {
2178 mlx4_err(dev, "Failed processing vhcr for slave:%d, resetting slave\n",
2179 slave);
2180 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2181 goto reset_slave;
2182 }
2183 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2184 break;
2185 default:
2186 mlx4_warn(dev, "Bad comm cmd:%d from slave:%d\n", cmd, slave);
2187 goto reset_slave;
2188 }
2189 spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
2190 if (!slave_state[slave].is_slave_going_down)
2191 slave_state[slave].last_cmd = cmd;
2192 else
2193 is_going_down = 1;
2194 spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
2195 if (is_going_down) {
2196 mlx4_warn(dev, "Slave is going down aborting command(%d) executing from slave:%d\n",
2197 cmd, slave);
2198 return;
2199 }
2200 __raw_writel((__force u32) cpu_to_be32(reply),
2201 &priv->mfunc.comm[slave].slave_read);
2202
2203 return;
2204
2205 reset_slave:
2206 /* cleanup any slave resources */
2207 if (dev->persist->interface_state & MLX4_INTERFACE_STATE_UP)
2208 mlx4_delete_all_resources_for_slave(dev, slave);
2209
2210 if (cmd != MLX4_COMM_CMD_RESET) {
2211 mlx4_warn(dev, "Turn on internal error to force reset, slave=%d, cmd=0x%x\n",
2212 slave, cmd);
2213 /* Turn on internal error letting slave reset itself immeditaly,
2214 * otherwise it might take till timeout on command is passed
2215 */
2216 reply |= ((u32)COMM_CHAN_EVENT_INTERNAL_ERR);
2217 }
2218
2219 spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
2220 if (!slave_state[slave].is_slave_going_down)
2221 slave_state[slave].last_cmd = MLX4_COMM_CMD_RESET;
2222 spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
2223 /*with slave in the middle of flr, no need to clean resources again.*/
2224 inform_slave_state:
2225 memset(&slave_state[slave].event_eq, 0,
2226 sizeof(struct mlx4_slave_event_eq_info));
2227 __raw_writel((__force u32) cpu_to_be32(reply),
2228 &priv->mfunc.comm[slave].slave_read);
2229 wmb();
2230 }
2231
2232 /* master command processing */
mlx4_master_comm_channel(struct work_struct * work)2233 void mlx4_master_comm_channel(struct work_struct *work)
2234 {
2235 struct mlx4_mfunc_master_ctx *master =
2236 container_of(work,
2237 struct mlx4_mfunc_master_ctx,
2238 comm_work);
2239 struct mlx4_mfunc *mfunc =
2240 container_of(master, struct mlx4_mfunc, master);
2241 struct mlx4_priv *priv =
2242 container_of(mfunc, struct mlx4_priv, mfunc);
2243 struct mlx4_dev *dev = &priv->dev;
2244 __be32 *bit_vec;
2245 u32 comm_cmd;
2246 u32 vec;
2247 int i, j, slave;
2248 int toggle;
2249 int served = 0;
2250 int reported = 0;
2251 u32 slt;
2252
2253 bit_vec = master->comm_arm_bit_vector;
2254 for (i = 0; i < COMM_CHANNEL_BIT_ARRAY_SIZE; i++) {
2255 vec = be32_to_cpu(bit_vec[i]);
2256 for (j = 0; j < 32; j++) {
2257 if (!(vec & (1 << j)))
2258 continue;
2259 ++reported;
2260 slave = (i * 32) + j;
2261 comm_cmd = swab32(readl(
2262 &mfunc->comm[slave].slave_write));
2263 slt = swab32(readl(&mfunc->comm[slave].slave_read))
2264 >> 31;
2265 toggle = comm_cmd >> 31;
2266 if (toggle != slt) {
2267 if (master->slave_state[slave].comm_toggle
2268 != slt) {
2269 pr_info("slave %d out of sync. read toggle %d, state toggle %d. Resynching.\n",
2270 slave, slt,
2271 master->slave_state[slave].comm_toggle);
2272 master->slave_state[slave].comm_toggle =
2273 slt;
2274 }
2275 mlx4_master_do_cmd(dev, slave,
2276 comm_cmd >> 16 & 0xff,
2277 comm_cmd & 0xffff, toggle);
2278 ++served;
2279 }
2280 }
2281 }
2282
2283 if (reported && reported != served)
2284 mlx4_warn(dev, "Got command event with bitmask from %d slaves but %d were served\n",
2285 reported, served);
2286
2287 if (mlx4_ARM_COMM_CHANNEL(dev))
2288 mlx4_warn(dev, "Failed to arm comm channel events\n");
2289 }
2290
sync_toggles(struct mlx4_dev * dev)2291 static int sync_toggles(struct mlx4_dev *dev)
2292 {
2293 struct mlx4_priv *priv = mlx4_priv(dev);
2294 u32 wr_toggle;
2295 u32 rd_toggle;
2296 unsigned long end;
2297
2298 wr_toggle = swab32(readl(&priv->mfunc.comm->slave_write));
2299 if (wr_toggle == 0xffffffff)
2300 end = jiffies + msecs_to_jiffies(30000);
2301 else
2302 end = jiffies + msecs_to_jiffies(5000);
2303
2304 while (time_before(jiffies, end)) {
2305 rd_toggle = swab32(readl(&priv->mfunc.comm->slave_read));
2306 if (wr_toggle == 0xffffffff || rd_toggle == 0xffffffff) {
2307 /* PCI might be offline */
2308
2309 /* If device removal has been requested,
2310 * do not continue retrying.
2311 */
2312 if (dev->persist->interface_state &
2313 MLX4_INTERFACE_STATE_NOWAIT) {
2314 mlx4_warn(dev,
2315 "communication channel is offline\n");
2316 return -EIO;
2317 }
2318
2319 msleep(100);
2320 wr_toggle = swab32(readl(&priv->mfunc.comm->
2321 slave_write));
2322 continue;
2323 }
2324
2325 if (rd_toggle >> 31 == wr_toggle >> 31) {
2326 priv->cmd.comm_toggle = rd_toggle >> 31;
2327 return 0;
2328 }
2329
2330 cond_resched();
2331 }
2332
2333 /*
2334 * we could reach here if for example the previous VM using this
2335 * function misbehaved and left the channel with unsynced state. We
2336 * should fix this here and give this VM a chance to use a properly
2337 * synced channel
2338 */
2339 mlx4_warn(dev, "recovering from previously mis-behaved VM\n");
2340 __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_read);
2341 __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_write);
2342 priv->cmd.comm_toggle = 0;
2343
2344 return 0;
2345 }
2346
mlx4_multi_func_init(struct mlx4_dev * dev)2347 int mlx4_multi_func_init(struct mlx4_dev *dev)
2348 {
2349 struct mlx4_priv *priv = mlx4_priv(dev);
2350 struct mlx4_slave_state *s_state;
2351 int i, j, err, port;
2352
2353 if (mlx4_is_master(dev))
2354 priv->mfunc.comm =
2355 ioremap(pci_resource_start(dev->persist->pdev,
2356 priv->fw.comm_bar) +
2357 priv->fw.comm_base, MLX4_COMM_PAGESIZE);
2358 else
2359 priv->mfunc.comm =
2360 ioremap(pci_resource_start(dev->persist->pdev, 2) +
2361 MLX4_SLAVE_COMM_BASE, MLX4_COMM_PAGESIZE);
2362 if (!priv->mfunc.comm) {
2363 mlx4_err(dev, "Couldn't map communication vector\n");
2364 goto err_vhcr;
2365 }
2366
2367 if (mlx4_is_master(dev)) {
2368 struct mlx4_vf_oper_state *vf_oper;
2369 struct mlx4_vf_admin_state *vf_admin;
2370
2371 priv->mfunc.master.slave_state =
2372 kcalloc(dev->num_slaves,
2373 sizeof(struct mlx4_slave_state),
2374 GFP_KERNEL);
2375 if (!priv->mfunc.master.slave_state)
2376 goto err_comm;
2377
2378 priv->mfunc.master.vf_admin =
2379 kcalloc(dev->num_slaves,
2380 sizeof(struct mlx4_vf_admin_state),
2381 GFP_KERNEL);
2382 if (!priv->mfunc.master.vf_admin)
2383 goto err_comm_admin;
2384
2385 priv->mfunc.master.vf_oper =
2386 kcalloc(dev->num_slaves,
2387 sizeof(struct mlx4_vf_oper_state),
2388 GFP_KERNEL);
2389 if (!priv->mfunc.master.vf_oper)
2390 goto err_comm_oper;
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 flush_workqueue(priv->mfunc.master.comm_wq);
2473 destroy_workqueue(priv->mfunc.master.comm_wq);
2474 err_slaves:
2475 while (i--) {
2476 for (port = 1; port <= MLX4_MAX_PORTS; port++)
2477 kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2478 }
2479 kfree(priv->mfunc.master.vf_oper);
2480 err_comm_oper:
2481 kfree(priv->mfunc.master.vf_admin);
2482 err_comm_admin:
2483 kfree(priv->mfunc.master.slave_state);
2484 err_comm:
2485 iounmap(priv->mfunc.comm);
2486 priv->mfunc.comm = NULL;
2487 err_vhcr:
2488 dma_free_coherent(&dev->persist->pdev->dev, PAGE_SIZE,
2489 priv->mfunc.vhcr,
2490 priv->mfunc.vhcr_dma);
2491 priv->mfunc.vhcr = NULL;
2492 return -ENOMEM;
2493 }
2494
mlx4_cmd_init(struct mlx4_dev * dev)2495 int mlx4_cmd_init(struct mlx4_dev *dev)
2496 {
2497 struct mlx4_priv *priv = mlx4_priv(dev);
2498 int flags = 0;
2499
2500 if (!priv->cmd.initialized) {
2501 init_rwsem(&priv->cmd.switch_sem);
2502 mutex_init(&priv->cmd.slave_cmd_mutex);
2503 sema_init(&priv->cmd.poll_sem, 1);
2504 priv->cmd.use_events = 0;
2505 priv->cmd.toggle = 1;
2506 priv->cmd.initialized = 1;
2507 flags |= MLX4_CMD_CLEANUP_STRUCT;
2508 }
2509
2510 if (!mlx4_is_slave(dev) && !priv->cmd.hcr) {
2511 priv->cmd.hcr = ioremap(pci_resource_start(dev->persist->pdev,
2512 0) + MLX4_HCR_BASE, MLX4_HCR_SIZE);
2513 if (!priv->cmd.hcr) {
2514 mlx4_err(dev, "Couldn't map command register\n");
2515 goto err;
2516 }
2517 flags |= MLX4_CMD_CLEANUP_HCR;
2518 }
2519
2520 if (mlx4_is_mfunc(dev) && !priv->mfunc.vhcr) {
2521 priv->mfunc.vhcr = dma_alloc_coherent(&dev->persist->pdev->dev,
2522 PAGE_SIZE,
2523 &priv->mfunc.vhcr_dma,
2524 GFP_KERNEL);
2525 if (!priv->mfunc.vhcr)
2526 goto err;
2527
2528 flags |= MLX4_CMD_CLEANUP_VHCR;
2529 }
2530
2531 if (!priv->cmd.pool) {
2532 priv->cmd.pool = dma_pool_create("mlx4_cmd",
2533 &dev->persist->pdev->dev,
2534 MLX4_MAILBOX_SIZE,
2535 MLX4_MAILBOX_SIZE, 0);
2536 if (!priv->cmd.pool)
2537 goto err;
2538
2539 flags |= MLX4_CMD_CLEANUP_POOL;
2540 }
2541
2542 return 0;
2543
2544 err:
2545 mlx4_cmd_cleanup(dev, flags);
2546 return -ENOMEM;
2547 }
2548
mlx4_report_internal_err_comm_event(struct mlx4_dev * dev)2549 void mlx4_report_internal_err_comm_event(struct mlx4_dev *dev)
2550 {
2551 struct mlx4_priv *priv = mlx4_priv(dev);
2552 int slave;
2553 u32 slave_read;
2554
2555 /* If the comm channel has not yet been initialized,
2556 * skip reporting the internal error event to all
2557 * the communication channels.
2558 */
2559 if (!priv->mfunc.comm)
2560 return;
2561
2562 /* Report an internal error event to all
2563 * communication channels.
2564 */
2565 for (slave = 0; slave < dev->num_slaves; slave++) {
2566 slave_read = swab32(readl(&priv->mfunc.comm[slave].slave_read));
2567 slave_read |= (u32)COMM_CHAN_EVENT_INTERNAL_ERR;
2568 __raw_writel((__force u32)cpu_to_be32(slave_read),
2569 &priv->mfunc.comm[slave].slave_read);
2570 }
2571 }
2572
mlx4_multi_func_cleanup(struct mlx4_dev * dev)2573 void mlx4_multi_func_cleanup(struct mlx4_dev *dev)
2574 {
2575 struct mlx4_priv *priv = mlx4_priv(dev);
2576 int i, port;
2577
2578 if (mlx4_is_master(dev)) {
2579 flush_workqueue(priv->mfunc.master.comm_wq);
2580 destroy_workqueue(priv->mfunc.master.comm_wq);
2581 for (i = 0; i < dev->num_slaves; i++) {
2582 for (port = 1; port <= MLX4_MAX_PORTS; port++)
2583 kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2584 }
2585 kfree(priv->mfunc.master.slave_state);
2586 kfree(priv->mfunc.master.vf_admin);
2587 kfree(priv->mfunc.master.vf_oper);
2588 dev->num_slaves = 0;
2589 }
2590
2591 iounmap(priv->mfunc.comm);
2592 priv->mfunc.comm = NULL;
2593 }
2594
mlx4_cmd_cleanup(struct mlx4_dev * dev,int cleanup_mask)2595 void mlx4_cmd_cleanup(struct mlx4_dev *dev, int cleanup_mask)
2596 {
2597 struct mlx4_priv *priv = mlx4_priv(dev);
2598
2599 if (priv->cmd.pool && (cleanup_mask & MLX4_CMD_CLEANUP_POOL)) {
2600 dma_pool_destroy(priv->cmd.pool);
2601 priv->cmd.pool = NULL;
2602 }
2603
2604 if (!mlx4_is_slave(dev) && priv->cmd.hcr &&
2605 (cleanup_mask & MLX4_CMD_CLEANUP_HCR)) {
2606 iounmap(priv->cmd.hcr);
2607 priv->cmd.hcr = NULL;
2608 }
2609 if (mlx4_is_mfunc(dev) && priv->mfunc.vhcr &&
2610 (cleanup_mask & MLX4_CMD_CLEANUP_VHCR)) {
2611 dma_free_coherent(&dev->persist->pdev->dev, PAGE_SIZE,
2612 priv->mfunc.vhcr, priv->mfunc.vhcr_dma);
2613 priv->mfunc.vhcr = NULL;
2614 }
2615 if (priv->cmd.initialized && (cleanup_mask & MLX4_CMD_CLEANUP_STRUCT))
2616 priv->cmd.initialized = 0;
2617 }
2618
2619 /*
2620 * Switch to using events to issue FW commands (can only be called
2621 * after event queue for command events has been initialized).
2622 */
mlx4_cmd_use_events(struct mlx4_dev * dev)2623 int mlx4_cmd_use_events(struct mlx4_dev *dev)
2624 {
2625 struct mlx4_priv *priv = mlx4_priv(dev);
2626 int i;
2627 int err = 0;
2628
2629 priv->cmd.context = kmalloc_array(priv->cmd.max_cmds,
2630 sizeof(struct mlx4_cmd_context),
2631 GFP_KERNEL);
2632 if (!priv->cmd.context)
2633 return -ENOMEM;
2634
2635 if (mlx4_is_mfunc(dev))
2636 mutex_lock(&priv->cmd.slave_cmd_mutex);
2637 down_write(&priv->cmd.switch_sem);
2638 for (i = 0; i < priv->cmd.max_cmds; ++i) {
2639 priv->cmd.context[i].token = i;
2640 priv->cmd.context[i].next = i + 1;
2641 /* To support fatal error flow, initialize all
2642 * cmd contexts to allow simulating completions
2643 * with complete() at any time.
2644 */
2645 init_completion(&priv->cmd.context[i].done);
2646 }
2647
2648 priv->cmd.context[priv->cmd.max_cmds - 1].next = -1;
2649 priv->cmd.free_head = 0;
2650
2651 sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds);
2652
2653 for (priv->cmd.token_mask = 1;
2654 priv->cmd.token_mask < priv->cmd.max_cmds;
2655 priv->cmd.token_mask <<= 1)
2656 ; /* nothing */
2657 --priv->cmd.token_mask;
2658
2659 down(&priv->cmd.poll_sem);
2660 priv->cmd.use_events = 1;
2661 up_write(&priv->cmd.switch_sem);
2662 if (mlx4_is_mfunc(dev))
2663 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2664
2665 return err;
2666 }
2667
2668 /*
2669 * Switch back to polling (used when shutting down the device)
2670 */
mlx4_cmd_use_polling(struct mlx4_dev * dev)2671 void mlx4_cmd_use_polling(struct mlx4_dev *dev)
2672 {
2673 struct mlx4_priv *priv = mlx4_priv(dev);
2674 int i;
2675
2676 if (mlx4_is_mfunc(dev))
2677 mutex_lock(&priv->cmd.slave_cmd_mutex);
2678 down_write(&priv->cmd.switch_sem);
2679 priv->cmd.use_events = 0;
2680
2681 for (i = 0; i < priv->cmd.max_cmds; ++i)
2682 down(&priv->cmd.event_sem);
2683
2684 kfree(priv->cmd.context);
2685 priv->cmd.context = NULL;
2686
2687 up(&priv->cmd.poll_sem);
2688 up_write(&priv->cmd.switch_sem);
2689 if (mlx4_is_mfunc(dev))
2690 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2691 }
2692
mlx4_alloc_cmd_mailbox(struct mlx4_dev * dev)2693 struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
2694 {
2695 struct mlx4_cmd_mailbox *mailbox;
2696
2697 mailbox = kmalloc(sizeof(*mailbox), GFP_KERNEL);
2698 if (!mailbox)
2699 return ERR_PTR(-ENOMEM);
2700
2701 mailbox->buf = dma_pool_zalloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
2702 &mailbox->dma);
2703 if (!mailbox->buf) {
2704 kfree(mailbox);
2705 return ERR_PTR(-ENOMEM);
2706 }
2707
2708 return mailbox;
2709 }
2710 EXPORT_SYMBOL_GPL(mlx4_alloc_cmd_mailbox);
2711
mlx4_free_cmd_mailbox(struct mlx4_dev * dev,struct mlx4_cmd_mailbox * mailbox)2712 void mlx4_free_cmd_mailbox(struct mlx4_dev *dev,
2713 struct mlx4_cmd_mailbox *mailbox)
2714 {
2715 if (!mailbox)
2716 return;
2717
2718 dma_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
2719 kfree(mailbox);
2720 }
2721 EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox);
2722
mlx4_comm_get_version(void)2723 u32 mlx4_comm_get_version(void)
2724 {
2725 return ((u32) CMD_CHAN_IF_REV << 8) | (u32) CMD_CHAN_VER;
2726 }
2727
mlx4_get_slave_indx(struct mlx4_dev * dev,int vf)2728 static int mlx4_get_slave_indx(struct mlx4_dev *dev, int vf)
2729 {
2730 if ((vf < 0) || (vf >= dev->persist->num_vfs)) {
2731 mlx4_err(dev, "Bad vf number:%d (number of activated vf: %d)\n",
2732 vf, dev->persist->num_vfs);
2733 return -EINVAL;
2734 }
2735
2736 return vf+1;
2737 }
2738
mlx4_get_vf_indx(struct mlx4_dev * dev,int slave)2739 int mlx4_get_vf_indx(struct mlx4_dev *dev, int slave)
2740 {
2741 if (slave < 1 || slave > dev->persist->num_vfs) {
2742 mlx4_err(dev,
2743 "Bad slave number:%d (number of activated slaves: %lu)\n",
2744 slave, dev->num_slaves);
2745 return -EINVAL;
2746 }
2747 return slave - 1;
2748 }
2749
mlx4_cmd_wake_completions(struct mlx4_dev * dev)2750 void mlx4_cmd_wake_completions(struct mlx4_dev *dev)
2751 {
2752 struct mlx4_priv *priv = mlx4_priv(dev);
2753 struct mlx4_cmd_context *context;
2754 int i;
2755
2756 spin_lock(&priv->cmd.context_lock);
2757 if (priv->cmd.context) {
2758 for (i = 0; i < priv->cmd.max_cmds; ++i) {
2759 context = &priv->cmd.context[i];
2760 context->fw_status = CMD_STAT_INTERNAL_ERR;
2761 context->result =
2762 mlx4_status_to_errno(CMD_STAT_INTERNAL_ERR);
2763 complete(&context->done);
2764 }
2765 }
2766 spin_unlock(&priv->cmd.context_lock);
2767 }
2768
mlx4_get_active_ports(struct mlx4_dev * dev,int slave)2769 struct mlx4_active_ports mlx4_get_active_ports(struct mlx4_dev *dev, int slave)
2770 {
2771 struct mlx4_active_ports actv_ports;
2772 int vf;
2773
2774 bitmap_zero(actv_ports.ports, MLX4_MAX_PORTS);
2775
2776 if (slave == 0) {
2777 bitmap_fill(actv_ports.ports, dev->caps.num_ports);
2778 return actv_ports;
2779 }
2780
2781 vf = mlx4_get_vf_indx(dev, slave);
2782 if (vf < 0)
2783 return actv_ports;
2784
2785 bitmap_set(actv_ports.ports, dev->dev_vfs[vf].min_port - 1,
2786 min((int)dev->dev_vfs[mlx4_get_vf_indx(dev, slave)].n_ports,
2787 dev->caps.num_ports));
2788
2789 return actv_ports;
2790 }
2791 EXPORT_SYMBOL_GPL(mlx4_get_active_ports);
2792
mlx4_slave_convert_port(struct mlx4_dev * dev,int slave,int port)2793 int mlx4_slave_convert_port(struct mlx4_dev *dev, int slave, int port)
2794 {
2795 unsigned n;
2796 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2797 unsigned m = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2798
2799 if (port <= 0 || port > m)
2800 return -EINVAL;
2801
2802 n = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2803 if (port <= n)
2804 port = n + 1;
2805
2806 return port;
2807 }
2808 EXPORT_SYMBOL_GPL(mlx4_slave_convert_port);
2809
mlx4_phys_to_slave_port(struct mlx4_dev * dev,int slave,int port)2810 int mlx4_phys_to_slave_port(struct mlx4_dev *dev, int slave, int port)
2811 {
2812 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2813 if (test_bit(port - 1, actv_ports.ports))
2814 return port -
2815 find_first_bit(actv_ports.ports, dev->caps.num_ports);
2816
2817 return -1;
2818 }
2819 EXPORT_SYMBOL_GPL(mlx4_phys_to_slave_port);
2820
mlx4_phys_to_slaves_pport(struct mlx4_dev * dev,int port)2821 struct mlx4_slaves_pport mlx4_phys_to_slaves_pport(struct mlx4_dev *dev,
2822 int port)
2823 {
2824 unsigned i;
2825 struct mlx4_slaves_pport slaves_pport;
2826
2827 bitmap_zero(slaves_pport.slaves, MLX4_MFUNC_MAX);
2828
2829 if (port <= 0 || port > dev->caps.num_ports)
2830 return slaves_pport;
2831
2832 for (i = 0; i < dev->persist->num_vfs + 1; i++) {
2833 struct mlx4_active_ports actv_ports =
2834 mlx4_get_active_ports(dev, i);
2835 if (test_bit(port - 1, actv_ports.ports))
2836 set_bit(i, slaves_pport.slaves);
2837 }
2838
2839 return slaves_pport;
2840 }
2841 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport);
2842
mlx4_phys_to_slaves_pport_actv(struct mlx4_dev * dev,const struct mlx4_active_ports * crit_ports)2843 struct mlx4_slaves_pport mlx4_phys_to_slaves_pport_actv(
2844 struct mlx4_dev *dev,
2845 const struct mlx4_active_ports *crit_ports)
2846 {
2847 unsigned i;
2848 struct mlx4_slaves_pport slaves_pport;
2849
2850 bitmap_zero(slaves_pport.slaves, MLX4_MFUNC_MAX);
2851
2852 for (i = 0; i < dev->persist->num_vfs + 1; i++) {
2853 struct mlx4_active_ports actv_ports =
2854 mlx4_get_active_ports(dev, i);
2855 if (bitmap_equal(crit_ports->ports, actv_ports.ports,
2856 dev->caps.num_ports))
2857 set_bit(i, slaves_pport.slaves);
2858 }
2859
2860 return slaves_pport;
2861 }
2862 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport_actv);
2863
mlx4_slaves_closest_port(struct mlx4_dev * dev,int slave,int port)2864 static int mlx4_slaves_closest_port(struct mlx4_dev *dev, int slave, int port)
2865 {
2866 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2867 int min_port = find_first_bit(actv_ports.ports, dev->caps.num_ports)
2868 + 1;
2869 int max_port = min_port +
2870 bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2871
2872 if (port < min_port)
2873 port = min_port;
2874 else if (port >= max_port)
2875 port = max_port - 1;
2876
2877 return port;
2878 }
2879
mlx4_set_vport_qos(struct mlx4_priv * priv,int slave,int port,int max_tx_rate)2880 static int mlx4_set_vport_qos(struct mlx4_priv *priv, int slave, int port,
2881 int max_tx_rate)
2882 {
2883 int i;
2884 int err;
2885 struct mlx4_qos_manager *port_qos;
2886 struct mlx4_dev *dev = &priv->dev;
2887 struct mlx4_vport_qos_param vpp_qos[MLX4_NUM_UP];
2888
2889 port_qos = &priv->mfunc.master.qos_ctl[port];
2890 memset(vpp_qos, 0, sizeof(struct mlx4_vport_qos_param) * MLX4_NUM_UP);
2891
2892 if (slave > port_qos->num_of_qos_vfs) {
2893 mlx4_info(dev, "No available VPP resources for this VF\n");
2894 return -EINVAL;
2895 }
2896
2897 /* Query for default QoS values from Vport 0 is needed */
2898 err = mlx4_SET_VPORT_QOS_get(dev, port, 0, vpp_qos);
2899 if (err) {
2900 mlx4_info(dev, "Failed to query Vport 0 QoS values\n");
2901 return err;
2902 }
2903
2904 for (i = 0; i < MLX4_NUM_UP; i++) {
2905 if (test_bit(i, port_qos->priority_bm) && max_tx_rate) {
2906 vpp_qos[i].max_avg_bw = max_tx_rate;
2907 vpp_qos[i].enable = 1;
2908 } else {
2909 /* if user supplied tx_rate == 0, meaning no rate limit
2910 * configuration is required. so we are leaving the
2911 * value of max_avg_bw as queried from Vport 0.
2912 */
2913 vpp_qos[i].enable = 0;
2914 }
2915 }
2916
2917 err = mlx4_SET_VPORT_QOS_set(dev, port, slave, vpp_qos);
2918 if (err) {
2919 mlx4_info(dev, "Failed to set Vport %d QoS values\n", slave);
2920 return err;
2921 }
2922
2923 return 0;
2924 }
2925
mlx4_is_vf_vst_and_prio_qos(struct mlx4_dev * dev,int port,struct mlx4_vport_state * vf_admin)2926 static bool mlx4_is_vf_vst_and_prio_qos(struct mlx4_dev *dev, int port,
2927 struct mlx4_vport_state *vf_admin)
2928 {
2929 struct mlx4_qos_manager *info;
2930 struct mlx4_priv *priv = mlx4_priv(dev);
2931
2932 if (!mlx4_is_master(dev) ||
2933 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP))
2934 return false;
2935
2936 info = &priv->mfunc.master.qos_ctl[port];
2937
2938 if (vf_admin->default_vlan != MLX4_VGT &&
2939 test_bit(vf_admin->default_qos, info->priority_bm))
2940 return true;
2941
2942 return false;
2943 }
2944
mlx4_valid_vf_state_change(struct mlx4_dev * dev,int port,struct mlx4_vport_state * vf_admin,int vlan,int qos)2945 static bool mlx4_valid_vf_state_change(struct mlx4_dev *dev, int port,
2946 struct mlx4_vport_state *vf_admin,
2947 int vlan, int qos)
2948 {
2949 struct mlx4_vport_state dummy_admin = {0};
2950
2951 if (!mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin) ||
2952 !vf_admin->tx_rate)
2953 return true;
2954
2955 dummy_admin.default_qos = qos;
2956 dummy_admin.default_vlan = vlan;
2957
2958 /* VF wants to move to other VST state which is valid with current
2959 * rate limit. Either differnt default vlan in VST or other
2960 * supported QoS priority. Otherwise we don't allow this change when
2961 * the TX rate is still configured.
2962 */
2963 if (mlx4_is_vf_vst_and_prio_qos(dev, port, &dummy_admin))
2964 return true;
2965
2966 mlx4_info(dev, "Cannot change VF state to %s while rate is set\n",
2967 (vlan == MLX4_VGT) ? "VGT" : "VST");
2968
2969 if (vlan != MLX4_VGT)
2970 mlx4_info(dev, "VST priority %d not supported for QoS\n", qos);
2971
2972 mlx4_info(dev, "Please set rate to 0 prior to this VF state change\n");
2973
2974 return false;
2975 }
2976
mlx4_set_vf_mac(struct mlx4_dev * dev,int port,int vf,u8 * mac)2977 int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u8 *mac)
2978 {
2979 struct mlx4_priv *priv = mlx4_priv(dev);
2980 struct mlx4_vport_state *s_info;
2981 int slave;
2982
2983 if (!mlx4_is_master(dev))
2984 return -EPROTONOSUPPORT;
2985
2986 if (is_multicast_ether_addr(mac))
2987 return -EINVAL;
2988
2989 slave = mlx4_get_slave_indx(dev, vf);
2990 if (slave < 0)
2991 return -EINVAL;
2992
2993 port = mlx4_slaves_closest_port(dev, slave, port);
2994 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2995
2996 if (s_info->spoofchk && is_zero_ether_addr(mac)) {
2997 mlx4_info(dev, "MAC invalidation is not allowed when spoofchk is on\n");
2998 return -EPERM;
2999 }
3000
3001 s_info->mac = mlx4_mac_to_u64(mac);
3002 mlx4_info(dev, "default mac on vf %d port %d to %llX will take effect only after vf restart\n",
3003 vf, port, s_info->mac);
3004 return 0;
3005 }
3006 EXPORT_SYMBOL_GPL(mlx4_set_vf_mac);
3007
3008
mlx4_set_vf_vlan(struct mlx4_dev * dev,int port,int vf,u16 vlan,u8 qos,__be16 proto)3009 int mlx4_set_vf_vlan(struct mlx4_dev *dev, int port, int vf, u16 vlan, u8 qos,
3010 __be16 proto)
3011 {
3012 struct mlx4_priv *priv = mlx4_priv(dev);
3013 struct mlx4_vport_state *vf_admin;
3014 struct mlx4_slave_state *slave_state;
3015 struct mlx4_vport_oper_state *vf_oper;
3016 int slave;
3017
3018 if ((!mlx4_is_master(dev)) ||
3019 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VLAN_CONTROL))
3020 return -EPROTONOSUPPORT;
3021
3022 if ((vlan > 4095) || (qos > 7))
3023 return -EINVAL;
3024
3025 if (proto == htons(ETH_P_8021AD) &&
3026 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SVLAN_BY_QP))
3027 return -EPROTONOSUPPORT;
3028
3029 if (proto != htons(ETH_P_8021Q) &&
3030 proto != htons(ETH_P_8021AD))
3031 return -EINVAL;
3032
3033 if ((proto == htons(ETH_P_8021AD)) &&
3034 ((vlan == 0) || (vlan == MLX4_VGT)))
3035 return -EINVAL;
3036
3037 slave = mlx4_get_slave_indx(dev, vf);
3038 if (slave < 0)
3039 return -EINVAL;
3040
3041 slave_state = &priv->mfunc.master.slave_state[slave];
3042 if ((proto == htons(ETH_P_8021AD)) && (slave_state->active) &&
3043 (!slave_state->vst_qinq_supported)) {
3044 mlx4_err(dev, "vf %d does not support VST QinQ mode\n", vf);
3045 return -EPROTONOSUPPORT;
3046 }
3047 port = mlx4_slaves_closest_port(dev, slave, port);
3048 vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
3049 vf_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
3050
3051 if (!mlx4_valid_vf_state_change(dev, port, vf_admin, vlan, qos))
3052 return -EPERM;
3053
3054 if ((0 == vlan) && (0 == qos))
3055 vf_admin->default_vlan = MLX4_VGT;
3056 else
3057 vf_admin->default_vlan = vlan;
3058 vf_admin->default_qos = qos;
3059 vf_admin->vlan_proto = proto;
3060
3061 /* If rate was configured prior to VST, we saved the configured rate
3062 * in vf_admin->rate and now, if priority supported we enforce the QoS
3063 */
3064 if (mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin) &&
3065 vf_admin->tx_rate)
3066 vf_admin->qos_vport = slave;
3067
3068 /* Try to activate new vf state without restart,
3069 * this option is not supported while moving to VST QinQ mode.
3070 */
3071 if ((proto == htons(ETH_P_8021AD) &&
3072 vf_oper->state.vlan_proto != proto) ||
3073 mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
3074 mlx4_info(dev,
3075 "updating vf %d port %d config will take effect on next VF restart\n",
3076 vf, port);
3077 return 0;
3078 }
3079 EXPORT_SYMBOL_GPL(mlx4_set_vf_vlan);
3080
mlx4_set_vf_rate(struct mlx4_dev * dev,int port,int vf,int min_tx_rate,int max_tx_rate)3081 int mlx4_set_vf_rate(struct mlx4_dev *dev, int port, int vf, int min_tx_rate,
3082 int max_tx_rate)
3083 {
3084 int err;
3085 int slave;
3086 struct mlx4_vport_state *vf_admin;
3087 struct mlx4_priv *priv = mlx4_priv(dev);
3088
3089 if (!mlx4_is_master(dev) ||
3090 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QOS_VPP))
3091 return -EPROTONOSUPPORT;
3092
3093 if (min_tx_rate) {
3094 mlx4_info(dev, "Minimum BW share not supported\n");
3095 return -EPROTONOSUPPORT;
3096 }
3097
3098 slave = mlx4_get_slave_indx(dev, vf);
3099 if (slave < 0)
3100 return -EINVAL;
3101
3102 port = mlx4_slaves_closest_port(dev, slave, port);
3103 vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
3104
3105 err = mlx4_set_vport_qos(priv, slave, port, max_tx_rate);
3106 if (err) {
3107 mlx4_info(dev, "vf %d failed to set rate %d\n", vf,
3108 max_tx_rate);
3109 return err;
3110 }
3111
3112 vf_admin->tx_rate = max_tx_rate;
3113 /* if VF is not in supported mode (VST with supported prio),
3114 * we do not change vport configuration for its QPs, but save
3115 * the rate, so it will be enforced when it moves to supported
3116 * mode next time.
3117 */
3118 if (!mlx4_is_vf_vst_and_prio_qos(dev, port, vf_admin)) {
3119 mlx4_info(dev,
3120 "rate set for VF %d when not in valid state\n", vf);
3121
3122 if (vf_admin->default_vlan != MLX4_VGT)
3123 mlx4_info(dev, "VST priority not supported by QoS\n");
3124 else
3125 mlx4_info(dev, "VF in VGT mode (needed VST)\n");
3126
3127 mlx4_info(dev,
3128 "rate %d take affect when VF moves to valid state\n",
3129 max_tx_rate);
3130 return 0;
3131 }
3132
3133 /* If user sets rate 0 assigning default vport for its QPs */
3134 vf_admin->qos_vport = max_tx_rate ? slave : MLX4_VPP_DEFAULT_VPORT;
3135
3136 if (priv->mfunc.master.slave_state[slave].active &&
3137 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP)
3138 mlx4_master_immediate_activate_vlan_qos(priv, slave, port);
3139
3140 return 0;
3141 }
3142 EXPORT_SYMBOL_GPL(mlx4_set_vf_rate);
3143
3144 /* mlx4_get_slave_default_vlan -
3145 * return true if VST ( default vlan)
3146 * if VST, will return vlan & qos (if not NULL)
3147 */
mlx4_get_slave_default_vlan(struct mlx4_dev * dev,int port,int slave,u16 * vlan,u8 * qos)3148 bool mlx4_get_slave_default_vlan(struct mlx4_dev *dev, int port, int slave,
3149 u16 *vlan, u8 *qos)
3150 {
3151 struct mlx4_vport_oper_state *vp_oper;
3152 struct mlx4_priv *priv;
3153
3154 priv = mlx4_priv(dev);
3155 port = mlx4_slaves_closest_port(dev, slave, port);
3156 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
3157
3158 if (MLX4_VGT != vp_oper->state.default_vlan) {
3159 if (vlan)
3160 *vlan = vp_oper->state.default_vlan;
3161 if (qos)
3162 *qos = vp_oper->state.default_qos;
3163 return true;
3164 }
3165 return false;
3166 }
3167 EXPORT_SYMBOL_GPL(mlx4_get_slave_default_vlan);
3168
mlx4_set_vf_spoofchk(struct mlx4_dev * dev,int port,int vf,bool setting)3169 int mlx4_set_vf_spoofchk(struct mlx4_dev *dev, int port, int vf, bool setting)
3170 {
3171 struct mlx4_priv *priv = mlx4_priv(dev);
3172 struct mlx4_vport_state *s_info;
3173 int slave;
3174 u8 mac[ETH_ALEN];
3175
3176 if ((!mlx4_is_master(dev)) ||
3177 !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FSM))
3178 return -EPROTONOSUPPORT;
3179
3180 slave = mlx4_get_slave_indx(dev, vf);
3181 if (slave < 0)
3182 return -EINVAL;
3183
3184 port = mlx4_slaves_closest_port(dev, slave, port);
3185 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3186
3187 mlx4_u64_to_mac(mac, s_info->mac);
3188 if (setting && !is_valid_ether_addr(mac)) {
3189 mlx4_info(dev, "Illegal MAC with spoofchk\n");
3190 return -EPERM;
3191 }
3192
3193 s_info->spoofchk = setting;
3194
3195 return 0;
3196 }
3197 EXPORT_SYMBOL_GPL(mlx4_set_vf_spoofchk);
3198
mlx4_get_vf_config(struct mlx4_dev * dev,int port,int vf,struct ifla_vf_info * ivf)3199 int mlx4_get_vf_config(struct mlx4_dev *dev, int port, int vf, struct ifla_vf_info *ivf)
3200 {
3201 struct mlx4_priv *priv = mlx4_priv(dev);
3202 struct mlx4_vport_state *s_info;
3203 int slave;
3204
3205 if (!mlx4_is_master(dev))
3206 return -EPROTONOSUPPORT;
3207
3208 slave = mlx4_get_slave_indx(dev, vf);
3209 if (slave < 0)
3210 return -EINVAL;
3211
3212 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3213 ivf->vf = vf;
3214
3215 /* need to convert it to a func */
3216 ivf->mac[0] = ((s_info->mac >> (5*8)) & 0xff);
3217 ivf->mac[1] = ((s_info->mac >> (4*8)) & 0xff);
3218 ivf->mac[2] = ((s_info->mac >> (3*8)) & 0xff);
3219 ivf->mac[3] = ((s_info->mac >> (2*8)) & 0xff);
3220 ivf->mac[4] = ((s_info->mac >> (1*8)) & 0xff);
3221 ivf->mac[5] = ((s_info->mac) & 0xff);
3222
3223 ivf->vlan = s_info->default_vlan;
3224 ivf->qos = s_info->default_qos;
3225 ivf->vlan_proto = s_info->vlan_proto;
3226
3227 if (mlx4_is_vf_vst_and_prio_qos(dev, port, s_info))
3228 ivf->max_tx_rate = s_info->tx_rate;
3229 else
3230 ivf->max_tx_rate = 0;
3231
3232 ivf->min_tx_rate = 0;
3233 ivf->spoofchk = s_info->spoofchk;
3234 ivf->linkstate = s_info->link_state;
3235
3236 return 0;
3237 }
3238 EXPORT_SYMBOL_GPL(mlx4_get_vf_config);
3239
mlx4_set_vf_link_state(struct mlx4_dev * dev,int port,int vf,int link_state)3240 int mlx4_set_vf_link_state(struct mlx4_dev *dev, int port, int vf, int link_state)
3241 {
3242 struct mlx4_priv *priv = mlx4_priv(dev);
3243 struct mlx4_vport_state *s_info;
3244 int slave;
3245 u8 link_stat_event;
3246
3247 slave = mlx4_get_slave_indx(dev, vf);
3248 if (slave < 0)
3249 return -EINVAL;
3250
3251 port = mlx4_slaves_closest_port(dev, slave, port);
3252 switch (link_state) {
3253 case IFLA_VF_LINK_STATE_AUTO:
3254 /* get current link state */
3255 if (!priv->sense.do_sense_port[port])
3256 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
3257 else
3258 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
3259 break;
3260
3261 case IFLA_VF_LINK_STATE_ENABLE:
3262 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
3263 break;
3264
3265 case IFLA_VF_LINK_STATE_DISABLE:
3266 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
3267 break;
3268
3269 default:
3270 mlx4_warn(dev, "unknown value for link_state %02x on slave %d port %d\n",
3271 link_state, slave, port);
3272 return -EINVAL;
3273 }
3274 s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
3275 s_info->link_state = link_state;
3276
3277 /* send event */
3278 mlx4_gen_port_state_change_eqe(dev, slave, port, link_stat_event);
3279
3280 if (mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
3281 mlx4_dbg(dev,
3282 "updating vf %d port %d no link state HW enforcement\n",
3283 vf, port);
3284 return 0;
3285 }
3286 EXPORT_SYMBOL_GPL(mlx4_set_vf_link_state);
3287
mlx4_get_counter_stats(struct mlx4_dev * dev,int counter_index,struct mlx4_counter * counter_stats,int reset)3288 int mlx4_get_counter_stats(struct mlx4_dev *dev, int counter_index,
3289 struct mlx4_counter *counter_stats, int reset)
3290 {
3291 struct mlx4_cmd_mailbox *mailbox = NULL;
3292 struct mlx4_counter *tmp_counter;
3293 int err;
3294 u32 if_stat_in_mod;
3295
3296 if (!counter_stats)
3297 return -EINVAL;
3298
3299 if (counter_index == MLX4_SINK_COUNTER_INDEX(dev))
3300 return 0;
3301
3302 mailbox = mlx4_alloc_cmd_mailbox(dev);
3303 if (IS_ERR(mailbox))
3304 return PTR_ERR(mailbox);
3305
3306 memset(mailbox->buf, 0, sizeof(struct mlx4_counter));
3307 if_stat_in_mod = counter_index;
3308 if (reset)
3309 if_stat_in_mod |= MLX4_QUERY_IF_STAT_RESET;
3310 err = mlx4_cmd_box(dev, 0, mailbox->dma,
3311 if_stat_in_mod, 0,
3312 MLX4_CMD_QUERY_IF_STAT,
3313 MLX4_CMD_TIME_CLASS_C,
3314 MLX4_CMD_NATIVE);
3315 if (err) {
3316 mlx4_dbg(dev, "%s: failed to read statistics for counter index %d\n",
3317 __func__, counter_index);
3318 goto if_stat_out;
3319 }
3320 tmp_counter = (struct mlx4_counter *)mailbox->buf;
3321 counter_stats->counter_mode = tmp_counter->counter_mode;
3322 if (counter_stats->counter_mode == 0) {
3323 counter_stats->rx_frames =
3324 cpu_to_be64(be64_to_cpu(counter_stats->rx_frames) +
3325 be64_to_cpu(tmp_counter->rx_frames));
3326 counter_stats->tx_frames =
3327 cpu_to_be64(be64_to_cpu(counter_stats->tx_frames) +
3328 be64_to_cpu(tmp_counter->tx_frames));
3329 counter_stats->rx_bytes =
3330 cpu_to_be64(be64_to_cpu(counter_stats->rx_bytes) +
3331 be64_to_cpu(tmp_counter->rx_bytes));
3332 counter_stats->tx_bytes =
3333 cpu_to_be64(be64_to_cpu(counter_stats->tx_bytes) +
3334 be64_to_cpu(tmp_counter->tx_bytes));
3335 }
3336
3337 if_stat_out:
3338 mlx4_free_cmd_mailbox(dev, mailbox);
3339
3340 return err;
3341 }
3342 EXPORT_SYMBOL_GPL(mlx4_get_counter_stats);
3343
mlx4_get_vf_stats(struct mlx4_dev * dev,int port,int vf_idx,struct ifla_vf_stats * vf_stats)3344 int mlx4_get_vf_stats(struct mlx4_dev *dev, int port, int vf_idx,
3345 struct ifla_vf_stats *vf_stats)
3346 {
3347 struct mlx4_counter tmp_vf_stats;
3348 int slave;
3349 int err = 0;
3350
3351 if (!vf_stats)
3352 return -EINVAL;
3353
3354 if (!mlx4_is_master(dev))
3355 return -EPROTONOSUPPORT;
3356
3357 slave = mlx4_get_slave_indx(dev, vf_idx);
3358 if (slave < 0)
3359 return -EINVAL;
3360
3361 port = mlx4_slaves_closest_port(dev, slave, port);
3362 err = mlx4_calc_vf_counters(dev, slave, port, &tmp_vf_stats);
3363 if (!err && tmp_vf_stats.counter_mode == 0) {
3364 vf_stats->rx_packets = be64_to_cpu(tmp_vf_stats.rx_frames);
3365 vf_stats->tx_packets = be64_to_cpu(tmp_vf_stats.tx_frames);
3366 vf_stats->rx_bytes = be64_to_cpu(tmp_vf_stats.rx_bytes);
3367 vf_stats->tx_bytes = be64_to_cpu(tmp_vf_stats.tx_bytes);
3368 }
3369
3370 return err;
3371 }
3372 EXPORT_SYMBOL_GPL(mlx4_get_vf_stats);
3373
mlx4_vf_smi_enabled(struct mlx4_dev * dev,int slave,int port)3374 int mlx4_vf_smi_enabled(struct mlx4_dev *dev, int slave, int port)
3375 {
3376 struct mlx4_priv *priv = mlx4_priv(dev);
3377
3378 if (slave < 1 || slave >= dev->num_slaves ||
3379 port < 1 || port > MLX4_MAX_PORTS)
3380 return 0;
3381
3382 return priv->mfunc.master.vf_oper[slave].smi_enabled[port] ==
3383 MLX4_VF_SMI_ENABLED;
3384 }
3385 EXPORT_SYMBOL_GPL(mlx4_vf_smi_enabled);
3386
mlx4_vf_get_enable_smi_admin(struct mlx4_dev * dev,int slave,int port)3387 int mlx4_vf_get_enable_smi_admin(struct mlx4_dev *dev, int slave, int port)
3388 {
3389 struct mlx4_priv *priv = mlx4_priv(dev);
3390
3391 if (slave == mlx4_master_func_num(dev))
3392 return 1;
3393
3394 if (slave < 1 || slave >= dev->num_slaves ||
3395 port < 1 || port > MLX4_MAX_PORTS)
3396 return 0;
3397
3398 return priv->mfunc.master.vf_admin[slave].enable_smi[port] ==
3399 MLX4_VF_SMI_ENABLED;
3400 }
3401 EXPORT_SYMBOL_GPL(mlx4_vf_get_enable_smi_admin);
3402
mlx4_vf_set_enable_smi_admin(struct mlx4_dev * dev,int slave,int port,int enabled)3403 int mlx4_vf_set_enable_smi_admin(struct mlx4_dev *dev, int slave, int port,
3404 int enabled)
3405 {
3406 struct mlx4_priv *priv = mlx4_priv(dev);
3407 struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
3408 &priv->dev, slave);
3409 int min_port = find_first_bit(actv_ports.ports,
3410 priv->dev.caps.num_ports) + 1;
3411 int max_port = min_port - 1 +
3412 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
3413
3414 if (slave == mlx4_master_func_num(dev))
3415 return 0;
3416
3417 if (slave < 1 || slave >= dev->num_slaves ||
3418 port < 1 || port > MLX4_MAX_PORTS ||
3419 enabled < 0 || enabled > 1)
3420 return -EINVAL;
3421
3422 if (min_port == max_port && dev->caps.num_ports > 1) {
3423 mlx4_info(dev, "SMI access disallowed for single ported VFs\n");
3424 return -EPROTONOSUPPORT;
3425 }
3426
3427 priv->mfunc.master.vf_admin[slave].enable_smi[port] = enabled;
3428 return 0;
3429 }
3430 EXPORT_SYMBOL_GPL(mlx4_vf_set_enable_smi_admin);
3431