1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2005, 2006 Cisco Systems. 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/completion.h>
36 #include <linux/pci.h>
37 #include <linux/errno.h>
38 #include <linux/sched.h>
39 #include <linux/module.h>
40 #include <linux/slab.h>
41 #include <asm/io.h>
42 #include <rdma/ib_mad.h>
43
44 #include "mthca_dev.h"
45 #include "mthca_config_reg.h"
46 #include "mthca_cmd.h"
47 #include "mthca_memfree.h"
48
49 #define CMD_POLL_TOKEN 0xffff
50
51 enum {
52 HCR_IN_PARAM_OFFSET = 0x00,
53 HCR_IN_MODIFIER_OFFSET = 0x08,
54 HCR_OUT_PARAM_OFFSET = 0x0c,
55 HCR_TOKEN_OFFSET = 0x14,
56 HCR_STATUS_OFFSET = 0x18,
57
58 HCR_OPMOD_SHIFT = 12,
59 HCA_E_BIT = 22,
60 HCR_GO_BIT = 23
61 };
62
63 enum {
64 /* initialization and general commands */
65 CMD_SYS_EN = 0x1,
66 CMD_SYS_DIS = 0x2,
67 CMD_MAP_FA = 0xfff,
68 CMD_UNMAP_FA = 0xffe,
69 CMD_RUN_FW = 0xff6,
70 CMD_MOD_STAT_CFG = 0x34,
71 CMD_QUERY_DEV_LIM = 0x3,
72 CMD_QUERY_FW = 0x4,
73 CMD_ENABLE_LAM = 0xff8,
74 CMD_DISABLE_LAM = 0xff7,
75 CMD_QUERY_DDR = 0x5,
76 CMD_QUERY_ADAPTER = 0x6,
77 CMD_INIT_HCA = 0x7,
78 CMD_CLOSE_HCA = 0x8,
79 CMD_INIT_IB = 0x9,
80 CMD_CLOSE_IB = 0xa,
81 CMD_QUERY_HCA = 0xb,
82 CMD_SET_IB = 0xc,
83 CMD_ACCESS_DDR = 0x2e,
84 CMD_MAP_ICM = 0xffa,
85 CMD_UNMAP_ICM = 0xff9,
86 CMD_MAP_ICM_AUX = 0xffc,
87 CMD_UNMAP_ICM_AUX = 0xffb,
88 CMD_SET_ICM_SIZE = 0xffd,
89
90 /* TPT commands */
91 CMD_SW2HW_MPT = 0xd,
92 CMD_QUERY_MPT = 0xe,
93 CMD_HW2SW_MPT = 0xf,
94 CMD_READ_MTT = 0x10,
95 CMD_WRITE_MTT = 0x11,
96 CMD_SYNC_TPT = 0x2f,
97
98 /* EQ commands */
99 CMD_MAP_EQ = 0x12,
100 CMD_SW2HW_EQ = 0x13,
101 CMD_HW2SW_EQ = 0x14,
102 CMD_QUERY_EQ = 0x15,
103
104 /* CQ commands */
105 CMD_SW2HW_CQ = 0x16,
106 CMD_HW2SW_CQ = 0x17,
107 CMD_QUERY_CQ = 0x18,
108 CMD_RESIZE_CQ = 0x2c,
109
110 /* SRQ commands */
111 CMD_SW2HW_SRQ = 0x35,
112 CMD_HW2SW_SRQ = 0x36,
113 CMD_QUERY_SRQ = 0x37,
114 CMD_ARM_SRQ = 0x40,
115
116 /* QP/EE commands */
117 CMD_RST2INIT_QPEE = 0x19,
118 CMD_INIT2RTR_QPEE = 0x1a,
119 CMD_RTR2RTS_QPEE = 0x1b,
120 CMD_RTS2RTS_QPEE = 0x1c,
121 CMD_SQERR2RTS_QPEE = 0x1d,
122 CMD_2ERR_QPEE = 0x1e,
123 CMD_RTS2SQD_QPEE = 0x1f,
124 CMD_SQD2SQD_QPEE = 0x38,
125 CMD_SQD2RTS_QPEE = 0x20,
126 CMD_ERR2RST_QPEE = 0x21,
127 CMD_QUERY_QPEE = 0x22,
128 CMD_INIT2INIT_QPEE = 0x2d,
129 CMD_SUSPEND_QPEE = 0x32,
130 CMD_UNSUSPEND_QPEE = 0x33,
131 /* special QPs and management commands */
132 CMD_CONF_SPECIAL_QP = 0x23,
133 CMD_MAD_IFC = 0x24,
134
135 /* multicast commands */
136 CMD_READ_MGM = 0x25,
137 CMD_WRITE_MGM = 0x26,
138 CMD_MGID_HASH = 0x27,
139
140 /* miscellaneous commands */
141 CMD_DIAG_RPRT = 0x30,
142 CMD_NOP = 0x31,
143
144 /* debug commands */
145 CMD_QUERY_DEBUG_MSG = 0x2a,
146 CMD_SET_DEBUG_MSG = 0x2b,
147 };
148
149 /*
150 * According to Mellanox code, FW may be starved and never complete
151 * commands. So we can't use strict timeouts described in PRM -- we
152 * just arbitrarily select 60 seconds for now.
153 */
154 #if 0
155 /*
156 * Round up and add 1 to make sure we get the full wait time (since we
157 * will be starting in the middle of a jiffy)
158 */
159 enum {
160 CMD_TIME_CLASS_A = (HZ + 999) / 1000 + 1,
161 CMD_TIME_CLASS_B = (HZ + 99) / 100 + 1,
162 CMD_TIME_CLASS_C = (HZ + 9) / 10 + 1,
163 CMD_TIME_CLASS_D = 60 * HZ
164 };
165 #else
166 enum {
167 CMD_TIME_CLASS_A = 60 * HZ,
168 CMD_TIME_CLASS_B = 60 * HZ,
169 CMD_TIME_CLASS_C = 60 * HZ,
170 CMD_TIME_CLASS_D = 60 * HZ
171 };
172 #endif
173
174 enum {
175 GO_BIT_TIMEOUT = HZ * 10
176 };
177
178 struct mthca_cmd_context {
179 struct completion done;
180 int result;
181 int next;
182 u64 out_param;
183 u16 token;
184 u8 status;
185 };
186
187 static int fw_cmd_doorbell = 0;
188 module_param(fw_cmd_doorbell, int, 0644);
189 MODULE_PARM_DESC(fw_cmd_doorbell, "post FW commands through doorbell page if nonzero "
190 "(and supported by FW)");
191
go_bit(struct mthca_dev * dev)192 static inline int go_bit(struct mthca_dev *dev)
193 {
194 return readl(dev->hcr + HCR_STATUS_OFFSET) &
195 swab32(1 << HCR_GO_BIT);
196 }
197
mthca_cmd_post_dbell(struct mthca_dev * dev,u64 in_param,u64 out_param,u32 in_modifier,u8 op_modifier,u16 op,u16 token)198 static void mthca_cmd_post_dbell(struct mthca_dev *dev,
199 u64 in_param,
200 u64 out_param,
201 u32 in_modifier,
202 u8 op_modifier,
203 u16 op,
204 u16 token)
205 {
206 void __iomem *ptr = dev->cmd.dbell_map;
207 u16 *offs = dev->cmd.dbell_offsets;
208
209 __raw_writel((__force u32) cpu_to_be32(in_param >> 32), ptr + offs[0]);
210 wmb();
211 __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful), ptr + offs[1]);
212 wmb();
213 __raw_writel((__force u32) cpu_to_be32(in_modifier), ptr + offs[2]);
214 wmb();
215 __raw_writel((__force u32) cpu_to_be32(out_param >> 32), ptr + offs[3]);
216 wmb();
217 __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), ptr + offs[4]);
218 wmb();
219 __raw_writel((__force u32) cpu_to_be32(token << 16), ptr + offs[5]);
220 wmb();
221 __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT) |
222 (1 << HCA_E_BIT) |
223 (op_modifier << HCR_OPMOD_SHIFT) |
224 op), ptr + offs[6]);
225 wmb();
226 __raw_writel((__force u32) 0, ptr + offs[7]);
227 wmb();
228 }
229
mthca_cmd_post_hcr(struct mthca_dev * dev,u64 in_param,u64 out_param,u32 in_modifier,u8 op_modifier,u16 op,u16 token,int event)230 static int mthca_cmd_post_hcr(struct mthca_dev *dev,
231 u64 in_param,
232 u64 out_param,
233 u32 in_modifier,
234 u8 op_modifier,
235 u16 op,
236 u16 token,
237 int event)
238 {
239 if (event) {
240 unsigned long end = jiffies + GO_BIT_TIMEOUT;
241
242 while (go_bit(dev) && time_before(jiffies, end)) {
243 set_current_state(TASK_RUNNING);
244 schedule();
245 }
246 }
247
248 if (go_bit(dev))
249 return -EAGAIN;
250
251 /*
252 * We use writel (instead of something like memcpy_toio)
253 * because writes of less than 32 bits to the HCR don't work
254 * (and some architectures such as ia64 implement memcpy_toio
255 * in terms of writeb).
256 */
257 __raw_writel((__force u32) cpu_to_be32(in_param >> 32), dev->hcr + 0 * 4);
258 __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful), dev->hcr + 1 * 4);
259 __raw_writel((__force u32) cpu_to_be32(in_modifier), dev->hcr + 2 * 4);
260 __raw_writel((__force u32) cpu_to_be32(out_param >> 32), dev->hcr + 3 * 4);
261 __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), dev->hcr + 4 * 4);
262 __raw_writel((__force u32) cpu_to_be32(token << 16), dev->hcr + 5 * 4);
263
264 /* __raw_writel may not order writes. */
265 wmb();
266
267 __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT) |
268 (event ? (1 << HCA_E_BIT) : 0) |
269 (op_modifier << HCR_OPMOD_SHIFT) |
270 op), dev->hcr + 6 * 4);
271
272 return 0;
273 }
274
mthca_cmd_post(struct mthca_dev * dev,u64 in_param,u64 out_param,u32 in_modifier,u8 op_modifier,u16 op,u16 token,int event)275 static int mthca_cmd_post(struct mthca_dev *dev,
276 u64 in_param,
277 u64 out_param,
278 u32 in_modifier,
279 u8 op_modifier,
280 u16 op,
281 u16 token,
282 int event)
283 {
284 int err = 0;
285
286 mutex_lock(&dev->cmd.hcr_mutex);
287
288 if (event && dev->cmd.flags & MTHCA_CMD_POST_DOORBELLS && fw_cmd_doorbell)
289 mthca_cmd_post_dbell(dev, in_param, out_param, in_modifier,
290 op_modifier, op, token);
291 else
292 err = mthca_cmd_post_hcr(dev, in_param, out_param, in_modifier,
293 op_modifier, op, token, event);
294
295 /*
296 * Make sure that our HCR writes don't get mixed in with
297 * writes from another CPU starting a FW command.
298 */
299 mmiowb();
300
301 mutex_unlock(&dev->cmd.hcr_mutex);
302 return err;
303 }
304
305
mthca_status_to_errno(u8 status)306 static int mthca_status_to_errno(u8 status)
307 {
308 static const int trans_table[] = {
309 [MTHCA_CMD_STAT_INTERNAL_ERR] = -EIO,
310 [MTHCA_CMD_STAT_BAD_OP] = -EPERM,
311 [MTHCA_CMD_STAT_BAD_PARAM] = -EINVAL,
312 [MTHCA_CMD_STAT_BAD_SYS_STATE] = -ENXIO,
313 [MTHCA_CMD_STAT_BAD_RESOURCE] = -EBADF,
314 [MTHCA_CMD_STAT_RESOURCE_BUSY] = -EBUSY,
315 [MTHCA_CMD_STAT_DDR_MEM_ERR] = -ENOMEM,
316 [MTHCA_CMD_STAT_EXCEED_LIM] = -ENOMEM,
317 [MTHCA_CMD_STAT_BAD_RES_STATE] = -EBADF,
318 [MTHCA_CMD_STAT_BAD_INDEX] = -EBADF,
319 [MTHCA_CMD_STAT_BAD_NVMEM] = -EFAULT,
320 [MTHCA_CMD_STAT_BAD_QPEE_STATE] = -EINVAL,
321 [MTHCA_CMD_STAT_BAD_SEG_PARAM] = -EFAULT,
322 [MTHCA_CMD_STAT_REG_BOUND] = -EBUSY,
323 [MTHCA_CMD_STAT_LAM_NOT_PRE] = -EAGAIN,
324 [MTHCA_CMD_STAT_BAD_PKT] = -EBADMSG,
325 [MTHCA_CMD_STAT_BAD_SIZE] = -ENOMEM,
326 };
327
328 if (status >= ARRAY_SIZE(trans_table) ||
329 (status != MTHCA_CMD_STAT_OK
330 && trans_table[status] == 0))
331 return -EINVAL;
332
333 return trans_table[status];
334 }
335
336
mthca_cmd_poll(struct mthca_dev * dev,u64 in_param,u64 * out_param,int out_is_imm,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout)337 static int mthca_cmd_poll(struct mthca_dev *dev,
338 u64 in_param,
339 u64 *out_param,
340 int out_is_imm,
341 u32 in_modifier,
342 u8 op_modifier,
343 u16 op,
344 unsigned long timeout)
345 {
346 int err = 0;
347 unsigned long end;
348 u8 status;
349
350 down(&dev->cmd.poll_sem);
351
352 err = mthca_cmd_post(dev, in_param,
353 out_param ? *out_param : 0,
354 in_modifier, op_modifier,
355 op, CMD_POLL_TOKEN, 0);
356 if (err)
357 goto out;
358
359 end = timeout + jiffies;
360 while (go_bit(dev) && time_before(jiffies, end)) {
361 set_current_state(TASK_RUNNING);
362 schedule();
363 }
364
365 if (go_bit(dev)) {
366 err = -EBUSY;
367 goto out;
368 }
369
370 if (out_is_imm)
371 *out_param =
372 (u64) be32_to_cpu((__force __be32)
373 __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
374 (u64) be32_to_cpu((__force __be32)
375 __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET + 4));
376
377 status = be32_to_cpu((__force __be32) __raw_readl(dev->hcr + HCR_STATUS_OFFSET)) >> 24;
378 if (status) {
379 mthca_dbg(dev, "Command %02x completed with status %02x\n",
380 op, status);
381 err = mthca_status_to_errno(status);
382 }
383
384 out:
385 up(&dev->cmd.poll_sem);
386 return err;
387 }
388
mthca_cmd_event(struct mthca_dev * dev,u16 token,u8 status,u64 out_param)389 void mthca_cmd_event(struct mthca_dev *dev,
390 u16 token,
391 u8 status,
392 u64 out_param)
393 {
394 struct mthca_cmd_context *context =
395 &dev->cmd.context[token & dev->cmd.token_mask];
396
397 /* previously timed out command completing at long last */
398 if (token != context->token)
399 return;
400
401 context->result = 0;
402 context->status = status;
403 context->out_param = out_param;
404
405 complete(&context->done);
406 }
407
mthca_cmd_wait(struct mthca_dev * dev,u64 in_param,u64 * out_param,int out_is_imm,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout)408 static int mthca_cmd_wait(struct mthca_dev *dev,
409 u64 in_param,
410 u64 *out_param,
411 int out_is_imm,
412 u32 in_modifier,
413 u8 op_modifier,
414 u16 op,
415 unsigned long timeout)
416 {
417 int err = 0;
418 struct mthca_cmd_context *context;
419
420 down(&dev->cmd.event_sem);
421
422 spin_lock(&dev->cmd.context_lock);
423 BUG_ON(dev->cmd.free_head < 0);
424 context = &dev->cmd.context[dev->cmd.free_head];
425 context->token += dev->cmd.token_mask + 1;
426 dev->cmd.free_head = context->next;
427 spin_unlock(&dev->cmd.context_lock);
428
429 init_completion(&context->done);
430
431 err = mthca_cmd_post(dev, in_param,
432 out_param ? *out_param : 0,
433 in_modifier, op_modifier,
434 op, context->token, 1);
435 if (err)
436 goto out;
437
438 if (!wait_for_completion_timeout(&context->done, timeout)) {
439 err = -EBUSY;
440 goto out;
441 }
442
443 err = context->result;
444 if (err)
445 goto out;
446
447 if (context->status) {
448 mthca_dbg(dev, "Command %02x completed with status %02x\n",
449 op, context->status);
450 err = mthca_status_to_errno(context->status);
451 }
452
453 if (out_is_imm)
454 *out_param = context->out_param;
455
456 out:
457 spin_lock(&dev->cmd.context_lock);
458 context->next = dev->cmd.free_head;
459 dev->cmd.free_head = context - dev->cmd.context;
460 spin_unlock(&dev->cmd.context_lock);
461
462 up(&dev->cmd.event_sem);
463 return err;
464 }
465
466 /* Invoke a command with an output mailbox */
mthca_cmd_box(struct mthca_dev * dev,u64 in_param,u64 out_param,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout)467 static int mthca_cmd_box(struct mthca_dev *dev,
468 u64 in_param,
469 u64 out_param,
470 u32 in_modifier,
471 u8 op_modifier,
472 u16 op,
473 unsigned long timeout)
474 {
475 if (dev->cmd.flags & MTHCA_CMD_USE_EVENTS)
476 return mthca_cmd_wait(dev, in_param, &out_param, 0,
477 in_modifier, op_modifier, op,
478 timeout);
479 else
480 return mthca_cmd_poll(dev, in_param, &out_param, 0,
481 in_modifier, op_modifier, op,
482 timeout);
483 }
484
485 /* Invoke a command with no output parameter */
mthca_cmd(struct mthca_dev * dev,u64 in_param,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout)486 static int mthca_cmd(struct mthca_dev *dev,
487 u64 in_param,
488 u32 in_modifier,
489 u8 op_modifier,
490 u16 op,
491 unsigned long timeout)
492 {
493 return mthca_cmd_box(dev, in_param, 0, in_modifier,
494 op_modifier, op, timeout);
495 }
496
497 /*
498 * Invoke a command with an immediate output parameter (and copy the
499 * output into the caller's out_param pointer after the command
500 * executes).
501 */
mthca_cmd_imm(struct mthca_dev * dev,u64 in_param,u64 * out_param,u32 in_modifier,u8 op_modifier,u16 op,unsigned long timeout)502 static int mthca_cmd_imm(struct mthca_dev *dev,
503 u64 in_param,
504 u64 *out_param,
505 u32 in_modifier,
506 u8 op_modifier,
507 u16 op,
508 unsigned long timeout)
509 {
510 if (dev->cmd.flags & MTHCA_CMD_USE_EVENTS)
511 return mthca_cmd_wait(dev, in_param, out_param, 1,
512 in_modifier, op_modifier, op,
513 timeout);
514 else
515 return mthca_cmd_poll(dev, in_param, out_param, 1,
516 in_modifier, op_modifier, op,
517 timeout);
518 }
519
mthca_cmd_init(struct mthca_dev * dev)520 int mthca_cmd_init(struct mthca_dev *dev)
521 {
522 mutex_init(&dev->cmd.hcr_mutex);
523 sema_init(&dev->cmd.poll_sem, 1);
524 dev->cmd.flags = 0;
525
526 dev->hcr = ioremap(pci_resource_start(dev->pdev, 0) + MTHCA_HCR_BASE,
527 MTHCA_HCR_SIZE);
528 if (!dev->hcr) {
529 mthca_err(dev, "Couldn't map command register.");
530 return -ENOMEM;
531 }
532
533 dev->cmd.pool = pci_pool_create("mthca_cmd", dev->pdev,
534 MTHCA_MAILBOX_SIZE,
535 MTHCA_MAILBOX_SIZE, 0);
536 if (!dev->cmd.pool) {
537 iounmap(dev->hcr);
538 return -ENOMEM;
539 }
540
541 return 0;
542 }
543
mthca_cmd_cleanup(struct mthca_dev * dev)544 void mthca_cmd_cleanup(struct mthca_dev *dev)
545 {
546 pci_pool_destroy(dev->cmd.pool);
547 iounmap(dev->hcr);
548 if (dev->cmd.flags & MTHCA_CMD_POST_DOORBELLS)
549 iounmap(dev->cmd.dbell_map);
550 }
551
552 /*
553 * Switch to using events to issue FW commands (should be called after
554 * event queue to command events has been initialized).
555 */
mthca_cmd_use_events(struct mthca_dev * dev)556 int mthca_cmd_use_events(struct mthca_dev *dev)
557 {
558 int i;
559
560 dev->cmd.context = kmalloc(dev->cmd.max_cmds *
561 sizeof (struct mthca_cmd_context),
562 GFP_KERNEL);
563 if (!dev->cmd.context)
564 return -ENOMEM;
565
566 for (i = 0; i < dev->cmd.max_cmds; ++i) {
567 dev->cmd.context[i].token = i;
568 dev->cmd.context[i].next = i + 1;
569 }
570
571 dev->cmd.context[dev->cmd.max_cmds - 1].next = -1;
572 dev->cmd.free_head = 0;
573
574 sema_init(&dev->cmd.event_sem, dev->cmd.max_cmds);
575 spin_lock_init(&dev->cmd.context_lock);
576
577 for (dev->cmd.token_mask = 1;
578 dev->cmd.token_mask < dev->cmd.max_cmds;
579 dev->cmd.token_mask <<= 1)
580 ; /* nothing */
581 --dev->cmd.token_mask;
582
583 dev->cmd.flags |= MTHCA_CMD_USE_EVENTS;
584
585 down(&dev->cmd.poll_sem);
586
587 return 0;
588 }
589
590 /*
591 * Switch back to polling (used when shutting down the device)
592 */
mthca_cmd_use_polling(struct mthca_dev * dev)593 void mthca_cmd_use_polling(struct mthca_dev *dev)
594 {
595 int i;
596
597 dev->cmd.flags &= ~MTHCA_CMD_USE_EVENTS;
598
599 for (i = 0; i < dev->cmd.max_cmds; ++i)
600 down(&dev->cmd.event_sem);
601
602 kfree(dev->cmd.context);
603
604 up(&dev->cmd.poll_sem);
605 }
606
mthca_alloc_mailbox(struct mthca_dev * dev,gfp_t gfp_mask)607 struct mthca_mailbox *mthca_alloc_mailbox(struct mthca_dev *dev,
608 gfp_t gfp_mask)
609 {
610 struct mthca_mailbox *mailbox;
611
612 mailbox = kmalloc(sizeof *mailbox, gfp_mask);
613 if (!mailbox)
614 return ERR_PTR(-ENOMEM);
615
616 mailbox->buf = pci_pool_alloc(dev->cmd.pool, gfp_mask, &mailbox->dma);
617 if (!mailbox->buf) {
618 kfree(mailbox);
619 return ERR_PTR(-ENOMEM);
620 }
621
622 return mailbox;
623 }
624
mthca_free_mailbox(struct mthca_dev * dev,struct mthca_mailbox * mailbox)625 void mthca_free_mailbox(struct mthca_dev *dev, struct mthca_mailbox *mailbox)
626 {
627 if (!mailbox)
628 return;
629
630 pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
631 kfree(mailbox);
632 }
633
mthca_SYS_EN(struct mthca_dev * dev)634 int mthca_SYS_EN(struct mthca_dev *dev)
635 {
636 u64 out;
637 int ret;
638
639 ret = mthca_cmd_imm(dev, 0, &out, 0, 0, CMD_SYS_EN, CMD_TIME_CLASS_D);
640
641 if (ret == -ENOMEM)
642 mthca_warn(dev, "SYS_EN DDR error: syn=%x, sock=%d, "
643 "sladdr=%d, SPD source=%s\n",
644 (int) (out >> 6) & 0xf, (int) (out >> 4) & 3,
645 (int) (out >> 1) & 7, (int) out & 1 ? "NVMEM" : "DIMM");
646
647 return ret;
648 }
649
mthca_SYS_DIS(struct mthca_dev * dev)650 int mthca_SYS_DIS(struct mthca_dev *dev)
651 {
652 return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, CMD_TIME_CLASS_C);
653 }
654
mthca_map_cmd(struct mthca_dev * dev,u16 op,struct mthca_icm * icm,u64 virt)655 static int mthca_map_cmd(struct mthca_dev *dev, u16 op, struct mthca_icm *icm,
656 u64 virt)
657 {
658 struct mthca_mailbox *mailbox;
659 struct mthca_icm_iter iter;
660 __be64 *pages;
661 int lg;
662 int nent = 0;
663 int i;
664 int err = 0;
665 int ts = 0, tc = 0;
666
667 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
668 if (IS_ERR(mailbox))
669 return PTR_ERR(mailbox);
670 memset(mailbox->buf, 0, MTHCA_MAILBOX_SIZE);
671 pages = mailbox->buf;
672
673 for (mthca_icm_first(icm, &iter);
674 !mthca_icm_last(&iter);
675 mthca_icm_next(&iter)) {
676 /*
677 * We have to pass pages that are aligned to their
678 * size, so find the least significant 1 in the
679 * address or size and use that as our log2 size.
680 */
681 lg = ffs(mthca_icm_addr(&iter) | mthca_icm_size(&iter)) - 1;
682 if (lg < MTHCA_ICM_PAGE_SHIFT) {
683 mthca_warn(dev, "Got FW area not aligned to %d (%llx/%lx).\n",
684 MTHCA_ICM_PAGE_SIZE,
685 (unsigned long long) mthca_icm_addr(&iter),
686 mthca_icm_size(&iter));
687 err = -EINVAL;
688 goto out;
689 }
690 for (i = 0; i < mthca_icm_size(&iter) >> lg; ++i) {
691 if (virt != -1) {
692 pages[nent * 2] = cpu_to_be64(virt);
693 virt += 1 << lg;
694 }
695
696 pages[nent * 2 + 1] =
697 cpu_to_be64((mthca_icm_addr(&iter) + (i << lg)) |
698 (lg - MTHCA_ICM_PAGE_SHIFT));
699 ts += 1 << (lg - 10);
700 ++tc;
701
702 if (++nent == MTHCA_MAILBOX_SIZE / 16) {
703 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
704 CMD_TIME_CLASS_B);
705 if (err)
706 goto out;
707 nent = 0;
708 }
709 }
710 }
711
712 if (nent)
713 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
714 CMD_TIME_CLASS_B);
715
716 switch (op) {
717 case CMD_MAP_FA:
718 mthca_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
719 break;
720 case CMD_MAP_ICM_AUX:
721 mthca_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
722 break;
723 case CMD_MAP_ICM:
724 mthca_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
725 tc, ts, (unsigned long long) virt - (ts << 10));
726 break;
727 }
728
729 out:
730 mthca_free_mailbox(dev, mailbox);
731 return err;
732 }
733
mthca_MAP_FA(struct mthca_dev * dev,struct mthca_icm * icm)734 int mthca_MAP_FA(struct mthca_dev *dev, struct mthca_icm *icm)
735 {
736 return mthca_map_cmd(dev, CMD_MAP_FA, icm, -1);
737 }
738
mthca_UNMAP_FA(struct mthca_dev * dev)739 int mthca_UNMAP_FA(struct mthca_dev *dev)
740 {
741 return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_FA, CMD_TIME_CLASS_B);
742 }
743
mthca_RUN_FW(struct mthca_dev * dev)744 int mthca_RUN_FW(struct mthca_dev *dev)
745 {
746 return mthca_cmd(dev, 0, 0, 0, CMD_RUN_FW, CMD_TIME_CLASS_A);
747 }
748
mthca_setup_cmd_doorbells(struct mthca_dev * dev,u64 base)749 static void mthca_setup_cmd_doorbells(struct mthca_dev *dev, u64 base)
750 {
751 phys_addr_t addr;
752 u16 max_off = 0;
753 int i;
754
755 for (i = 0; i < 8; ++i)
756 max_off = max(max_off, dev->cmd.dbell_offsets[i]);
757
758 if ((base & PAGE_MASK) != ((base + max_off) & PAGE_MASK)) {
759 mthca_warn(dev, "Firmware doorbell region at 0x%016llx, "
760 "length 0x%x crosses a page boundary\n",
761 (unsigned long long) base, max_off);
762 return;
763 }
764
765 addr = pci_resource_start(dev->pdev, 2) +
766 ((pci_resource_len(dev->pdev, 2) - 1) & base);
767 dev->cmd.dbell_map = ioremap(addr, max_off + sizeof(u32));
768 if (!dev->cmd.dbell_map)
769 return;
770
771 dev->cmd.flags |= MTHCA_CMD_POST_DOORBELLS;
772 mthca_dbg(dev, "Mapped doorbell page for posting FW commands\n");
773 }
774
mthca_QUERY_FW(struct mthca_dev * dev)775 int mthca_QUERY_FW(struct mthca_dev *dev)
776 {
777 struct mthca_mailbox *mailbox;
778 u32 *outbox;
779 u64 base;
780 u32 tmp;
781 int err = 0;
782 u8 lg;
783 int i;
784
785 #define QUERY_FW_OUT_SIZE 0x100
786 #define QUERY_FW_VER_OFFSET 0x00
787 #define QUERY_FW_MAX_CMD_OFFSET 0x0f
788 #define QUERY_FW_ERR_START_OFFSET 0x30
789 #define QUERY_FW_ERR_SIZE_OFFSET 0x38
790
791 #define QUERY_FW_CMD_DB_EN_OFFSET 0x10
792 #define QUERY_FW_CMD_DB_OFFSET 0x50
793 #define QUERY_FW_CMD_DB_BASE 0x60
794
795 #define QUERY_FW_START_OFFSET 0x20
796 #define QUERY_FW_END_OFFSET 0x28
797
798 #define QUERY_FW_SIZE_OFFSET 0x00
799 #define QUERY_FW_CLR_INT_BASE_OFFSET 0x20
800 #define QUERY_FW_EQ_ARM_BASE_OFFSET 0x40
801 #define QUERY_FW_EQ_SET_CI_BASE_OFFSET 0x48
802
803 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
804 if (IS_ERR(mailbox))
805 return PTR_ERR(mailbox);
806 outbox = mailbox->buf;
807
808 err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_FW,
809 CMD_TIME_CLASS_A);
810
811 if (err)
812 goto out;
813
814 MTHCA_GET(dev->fw_ver, outbox, QUERY_FW_VER_OFFSET);
815 /*
816 * FW subminor version is at more significant bits than minor
817 * version, so swap here.
818 */
819 dev->fw_ver = (dev->fw_ver & 0xffff00000000ull) |
820 ((dev->fw_ver & 0xffff0000ull) >> 16) |
821 ((dev->fw_ver & 0x0000ffffull) << 16);
822
823 MTHCA_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
824 dev->cmd.max_cmds = 1 << lg;
825
826 mthca_dbg(dev, "FW version %012llx, max commands %d\n",
827 (unsigned long long) dev->fw_ver, dev->cmd.max_cmds);
828
829 MTHCA_GET(dev->catas_err.addr, outbox, QUERY_FW_ERR_START_OFFSET);
830 MTHCA_GET(dev->catas_err.size, outbox, QUERY_FW_ERR_SIZE_OFFSET);
831
832 mthca_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x\n",
833 (unsigned long long) dev->catas_err.addr, dev->catas_err.size);
834
835 MTHCA_GET(tmp, outbox, QUERY_FW_CMD_DB_EN_OFFSET);
836 if (tmp & 0x1) {
837 mthca_dbg(dev, "FW supports commands through doorbells\n");
838
839 MTHCA_GET(base, outbox, QUERY_FW_CMD_DB_BASE);
840 for (i = 0; i < MTHCA_CMD_NUM_DBELL_DWORDS; ++i)
841 MTHCA_GET(dev->cmd.dbell_offsets[i], outbox,
842 QUERY_FW_CMD_DB_OFFSET + (i << 1));
843
844 mthca_setup_cmd_doorbells(dev, base);
845 }
846
847 if (mthca_is_memfree(dev)) {
848 MTHCA_GET(dev->fw.arbel.fw_pages, outbox, QUERY_FW_SIZE_OFFSET);
849 MTHCA_GET(dev->fw.arbel.clr_int_base, outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
850 MTHCA_GET(dev->fw.arbel.eq_arm_base, outbox, QUERY_FW_EQ_ARM_BASE_OFFSET);
851 MTHCA_GET(dev->fw.arbel.eq_set_ci_base, outbox, QUERY_FW_EQ_SET_CI_BASE_OFFSET);
852 mthca_dbg(dev, "FW size %d KB\n", dev->fw.arbel.fw_pages << 2);
853
854 /*
855 * Round up number of system pages needed in case
856 * MTHCA_ICM_PAGE_SIZE < PAGE_SIZE.
857 */
858 dev->fw.arbel.fw_pages =
859 ALIGN(dev->fw.arbel.fw_pages, PAGE_SIZE / MTHCA_ICM_PAGE_SIZE) >>
860 (PAGE_SHIFT - MTHCA_ICM_PAGE_SHIFT);
861
862 mthca_dbg(dev, "Clear int @ %llx, EQ arm @ %llx, EQ set CI @ %llx\n",
863 (unsigned long long) dev->fw.arbel.clr_int_base,
864 (unsigned long long) dev->fw.arbel.eq_arm_base,
865 (unsigned long long) dev->fw.arbel.eq_set_ci_base);
866 } else {
867 MTHCA_GET(dev->fw.tavor.fw_start, outbox, QUERY_FW_START_OFFSET);
868 MTHCA_GET(dev->fw.tavor.fw_end, outbox, QUERY_FW_END_OFFSET);
869
870 mthca_dbg(dev, "FW size %d KB (start %llx, end %llx)\n",
871 (int) ((dev->fw.tavor.fw_end - dev->fw.tavor.fw_start) >> 10),
872 (unsigned long long) dev->fw.tavor.fw_start,
873 (unsigned long long) dev->fw.tavor.fw_end);
874 }
875
876 out:
877 mthca_free_mailbox(dev, mailbox);
878 return err;
879 }
880
mthca_ENABLE_LAM(struct mthca_dev * dev)881 int mthca_ENABLE_LAM(struct mthca_dev *dev)
882 {
883 struct mthca_mailbox *mailbox;
884 u8 info;
885 u32 *outbox;
886 int err = 0;
887
888 #define ENABLE_LAM_OUT_SIZE 0x100
889 #define ENABLE_LAM_START_OFFSET 0x00
890 #define ENABLE_LAM_END_OFFSET 0x08
891 #define ENABLE_LAM_INFO_OFFSET 0x13
892
893 #define ENABLE_LAM_INFO_HIDDEN_FLAG (1 << 4)
894 #define ENABLE_LAM_INFO_ECC_MASK 0x3
895
896 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
897 if (IS_ERR(mailbox))
898 return PTR_ERR(mailbox);
899 outbox = mailbox->buf;
900
901 err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_ENABLE_LAM,
902 CMD_TIME_CLASS_C);
903
904 if (err)
905 goto out;
906
907 MTHCA_GET(dev->ddr_start, outbox, ENABLE_LAM_START_OFFSET);
908 MTHCA_GET(dev->ddr_end, outbox, ENABLE_LAM_END_OFFSET);
909 MTHCA_GET(info, outbox, ENABLE_LAM_INFO_OFFSET);
910
911 if (!!(info & ENABLE_LAM_INFO_HIDDEN_FLAG) !=
912 !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
913 mthca_info(dev, "FW reports that HCA-attached memory "
914 "is %s hidden; does not match PCI config\n",
915 (info & ENABLE_LAM_INFO_HIDDEN_FLAG) ?
916 "" : "not");
917 }
918 if (info & ENABLE_LAM_INFO_HIDDEN_FLAG)
919 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
920
921 mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
922 (int) ((dev->ddr_end - dev->ddr_start) >> 10),
923 (unsigned long long) dev->ddr_start,
924 (unsigned long long) dev->ddr_end);
925
926 out:
927 mthca_free_mailbox(dev, mailbox);
928 return err;
929 }
930
mthca_DISABLE_LAM(struct mthca_dev * dev)931 int mthca_DISABLE_LAM(struct mthca_dev *dev)
932 {
933 return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, CMD_TIME_CLASS_C);
934 }
935
mthca_QUERY_DDR(struct mthca_dev * dev)936 int mthca_QUERY_DDR(struct mthca_dev *dev)
937 {
938 struct mthca_mailbox *mailbox;
939 u8 info;
940 u32 *outbox;
941 int err = 0;
942
943 #define QUERY_DDR_OUT_SIZE 0x100
944 #define QUERY_DDR_START_OFFSET 0x00
945 #define QUERY_DDR_END_OFFSET 0x08
946 #define QUERY_DDR_INFO_OFFSET 0x13
947
948 #define QUERY_DDR_INFO_HIDDEN_FLAG (1 << 4)
949 #define QUERY_DDR_INFO_ECC_MASK 0x3
950
951 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
952 if (IS_ERR(mailbox))
953 return PTR_ERR(mailbox);
954 outbox = mailbox->buf;
955
956 err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DDR,
957 CMD_TIME_CLASS_A);
958
959 if (err)
960 goto out;
961
962 MTHCA_GET(dev->ddr_start, outbox, QUERY_DDR_START_OFFSET);
963 MTHCA_GET(dev->ddr_end, outbox, QUERY_DDR_END_OFFSET);
964 MTHCA_GET(info, outbox, QUERY_DDR_INFO_OFFSET);
965
966 if (!!(info & QUERY_DDR_INFO_HIDDEN_FLAG) !=
967 !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
968 mthca_info(dev, "FW reports that HCA-attached memory "
969 "is %s hidden; does not match PCI config\n",
970 (info & QUERY_DDR_INFO_HIDDEN_FLAG) ?
971 "" : "not");
972 }
973 if (info & QUERY_DDR_INFO_HIDDEN_FLAG)
974 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
975
976 mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
977 (int) ((dev->ddr_end - dev->ddr_start) >> 10),
978 (unsigned long long) dev->ddr_start,
979 (unsigned long long) dev->ddr_end);
980
981 out:
982 mthca_free_mailbox(dev, mailbox);
983 return err;
984 }
985
mthca_QUERY_DEV_LIM(struct mthca_dev * dev,struct mthca_dev_lim * dev_lim)986 int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
987 struct mthca_dev_lim *dev_lim)
988 {
989 struct mthca_mailbox *mailbox;
990 u32 *outbox;
991 u8 field;
992 u16 size;
993 u16 stat_rate;
994 int err;
995
996 #define QUERY_DEV_LIM_OUT_SIZE 0x100
997 #define QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET 0x10
998 #define QUERY_DEV_LIM_MAX_QP_SZ_OFFSET 0x11
999 #define QUERY_DEV_LIM_RSVD_QP_OFFSET 0x12
1000 #define QUERY_DEV_LIM_MAX_QP_OFFSET 0x13
1001 #define QUERY_DEV_LIM_RSVD_SRQ_OFFSET 0x14
1002 #define QUERY_DEV_LIM_MAX_SRQ_OFFSET 0x15
1003 #define QUERY_DEV_LIM_RSVD_EEC_OFFSET 0x16
1004 #define QUERY_DEV_LIM_MAX_EEC_OFFSET 0x17
1005 #define QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET 0x19
1006 #define QUERY_DEV_LIM_RSVD_CQ_OFFSET 0x1a
1007 #define QUERY_DEV_LIM_MAX_CQ_OFFSET 0x1b
1008 #define QUERY_DEV_LIM_MAX_MPT_OFFSET 0x1d
1009 #define QUERY_DEV_LIM_RSVD_EQ_OFFSET 0x1e
1010 #define QUERY_DEV_LIM_MAX_EQ_OFFSET 0x1f
1011 #define QUERY_DEV_LIM_RSVD_MTT_OFFSET 0x20
1012 #define QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET 0x21
1013 #define QUERY_DEV_LIM_RSVD_MRW_OFFSET 0x22
1014 #define QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET 0x23
1015 #define QUERY_DEV_LIM_MAX_AV_OFFSET 0x27
1016 #define QUERY_DEV_LIM_MAX_REQ_QP_OFFSET 0x29
1017 #define QUERY_DEV_LIM_MAX_RES_QP_OFFSET 0x2b
1018 #define QUERY_DEV_LIM_MAX_RDMA_OFFSET 0x2f
1019 #define QUERY_DEV_LIM_RSZ_SRQ_OFFSET 0x33
1020 #define QUERY_DEV_LIM_ACK_DELAY_OFFSET 0x35
1021 #define QUERY_DEV_LIM_MTU_WIDTH_OFFSET 0x36
1022 #define QUERY_DEV_LIM_VL_PORT_OFFSET 0x37
1023 #define QUERY_DEV_LIM_MAX_GID_OFFSET 0x3b
1024 #define QUERY_DEV_LIM_RATE_SUPPORT_OFFSET 0x3c
1025 #define QUERY_DEV_LIM_MAX_PKEY_OFFSET 0x3f
1026 #define QUERY_DEV_LIM_FLAGS_OFFSET 0x44
1027 #define QUERY_DEV_LIM_RSVD_UAR_OFFSET 0x48
1028 #define QUERY_DEV_LIM_UAR_SZ_OFFSET 0x49
1029 #define QUERY_DEV_LIM_PAGE_SZ_OFFSET 0x4b
1030 #define QUERY_DEV_LIM_MAX_SG_OFFSET 0x51
1031 #define QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET 0x52
1032 #define QUERY_DEV_LIM_MAX_SG_RQ_OFFSET 0x55
1033 #define QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET 0x56
1034 #define QUERY_DEV_LIM_MAX_QP_MCG_OFFSET 0x61
1035 #define QUERY_DEV_LIM_RSVD_MCG_OFFSET 0x62
1036 #define QUERY_DEV_LIM_MAX_MCG_OFFSET 0x63
1037 #define QUERY_DEV_LIM_RSVD_PD_OFFSET 0x64
1038 #define QUERY_DEV_LIM_MAX_PD_OFFSET 0x65
1039 #define QUERY_DEV_LIM_RSVD_RDD_OFFSET 0x66
1040 #define QUERY_DEV_LIM_MAX_RDD_OFFSET 0x67
1041 #define QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET 0x80
1042 #define QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET 0x82
1043 #define QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET 0x84
1044 #define QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET 0x86
1045 #define QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET 0x88
1046 #define QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET 0x8a
1047 #define QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET 0x8c
1048 #define QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET 0x8e
1049 #define QUERY_DEV_LIM_MTT_ENTRY_SZ_OFFSET 0x90
1050 #define QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET 0x92
1051 #define QUERY_DEV_LIM_PBL_SZ_OFFSET 0x96
1052 #define QUERY_DEV_LIM_BMME_FLAGS_OFFSET 0x97
1053 #define QUERY_DEV_LIM_RSVD_LKEY_OFFSET 0x98
1054 #define QUERY_DEV_LIM_LAMR_OFFSET 0x9f
1055 #define QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET 0xa0
1056
1057 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1058 if (IS_ERR(mailbox))
1059 return PTR_ERR(mailbox);
1060 outbox = mailbox->buf;
1061
1062 err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DEV_LIM,
1063 CMD_TIME_CLASS_A);
1064
1065 if (err)
1066 goto out;
1067
1068 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_QP_OFFSET);
1069 dev_lim->reserved_qps = 1 << (field & 0xf);
1070 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_OFFSET);
1071 dev_lim->max_qps = 1 << (field & 0x1f);
1072 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_SRQ_OFFSET);
1073 dev_lim->reserved_srqs = 1 << (field >> 4);
1074 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_OFFSET);
1075 dev_lim->max_srqs = 1 << (field & 0x1f);
1076 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EEC_OFFSET);
1077 dev_lim->reserved_eecs = 1 << (field & 0xf);
1078 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EEC_OFFSET);
1079 dev_lim->max_eecs = 1 << (field & 0x1f);
1080 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET);
1081 dev_lim->max_cq_sz = 1 << field;
1082 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_CQ_OFFSET);
1083 dev_lim->reserved_cqs = 1 << (field & 0xf);
1084 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_OFFSET);
1085 dev_lim->max_cqs = 1 << (field & 0x1f);
1086 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MPT_OFFSET);
1087 dev_lim->max_mpts = 1 << (field & 0x3f);
1088 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EQ_OFFSET);
1089 dev_lim->reserved_eqs = 1 << (field & 0xf);
1090 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EQ_OFFSET);
1091 dev_lim->max_eqs = 1 << (field & 0x7);
1092 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MTT_OFFSET);
1093 if (mthca_is_memfree(dev))
1094 dev_lim->reserved_mtts = ALIGN((1 << (field >> 4)) * sizeof(u64),
1095 dev->limits.mtt_seg_size) / dev->limits.mtt_seg_size;
1096 else
1097 dev_lim->reserved_mtts = 1 << (field >> 4);
1098 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET);
1099 dev_lim->max_mrw_sz = 1 << field;
1100 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MRW_OFFSET);
1101 dev_lim->reserved_mrws = 1 << (field & 0xf);
1102 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET);
1103 dev_lim->max_mtt_seg = 1 << (field & 0x3f);
1104 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_REQ_QP_OFFSET);
1105 dev_lim->max_requester_per_qp = 1 << (field & 0x3f);
1106 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RES_QP_OFFSET);
1107 dev_lim->max_responder_per_qp = 1 << (field & 0x3f);
1108 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDMA_OFFSET);
1109 dev_lim->max_rdma_global = 1 << (field & 0x3f);
1110 MTHCA_GET(field, outbox, QUERY_DEV_LIM_ACK_DELAY_OFFSET);
1111 dev_lim->local_ca_ack_delay = field & 0x1f;
1112 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MTU_WIDTH_OFFSET);
1113 dev_lim->max_mtu = field >> 4;
1114 dev_lim->max_port_width = field & 0xf;
1115 MTHCA_GET(field, outbox, QUERY_DEV_LIM_VL_PORT_OFFSET);
1116 dev_lim->max_vl = field >> 4;
1117 dev_lim->num_ports = field & 0xf;
1118 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_GID_OFFSET);
1119 dev_lim->max_gids = 1 << (field & 0xf);
1120 MTHCA_GET(stat_rate, outbox, QUERY_DEV_LIM_RATE_SUPPORT_OFFSET);
1121 dev_lim->stat_rate_support = stat_rate;
1122 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PKEY_OFFSET);
1123 dev_lim->max_pkeys = 1 << (field & 0xf);
1124 MTHCA_GET(dev_lim->flags, outbox, QUERY_DEV_LIM_FLAGS_OFFSET);
1125 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_UAR_OFFSET);
1126 dev_lim->reserved_uars = field >> 4;
1127 MTHCA_GET(field, outbox, QUERY_DEV_LIM_UAR_SZ_OFFSET);
1128 dev_lim->uar_size = 1 << ((field & 0x3f) + 20);
1129 MTHCA_GET(field, outbox, QUERY_DEV_LIM_PAGE_SZ_OFFSET);
1130 dev_lim->min_page_sz = 1 << field;
1131 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_OFFSET);
1132 dev_lim->max_sg = field;
1133
1134 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET);
1135 dev_lim->max_desc_sz = size;
1136
1137 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_MCG_OFFSET);
1138 dev_lim->max_qp_per_mcg = 1 << field;
1139 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MCG_OFFSET);
1140 dev_lim->reserved_mgms = field & 0xf;
1141 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MCG_OFFSET);
1142 dev_lim->max_mcgs = 1 << field;
1143 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_PD_OFFSET);
1144 dev_lim->reserved_pds = field >> 4;
1145 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PD_OFFSET);
1146 dev_lim->max_pds = 1 << (field & 0x3f);
1147 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_RDD_OFFSET);
1148 dev_lim->reserved_rdds = field >> 4;
1149 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDD_OFFSET);
1150 dev_lim->max_rdds = 1 << (field & 0x3f);
1151
1152 MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET);
1153 dev_lim->eec_entry_sz = size;
1154 MTHCA_GET(size, outbox, QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET);
1155 dev_lim->qpc_entry_sz = size;
1156 MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET);
1157 dev_lim->eeec_entry_sz = size;
1158 MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET);
1159 dev_lim->eqpc_entry_sz = size;
1160 MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET);
1161 dev_lim->eqc_entry_sz = size;
1162 MTHCA_GET(size, outbox, QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET);
1163 dev_lim->cqc_entry_sz = size;
1164 MTHCA_GET(size, outbox, QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET);
1165 dev_lim->srq_entry_sz = size;
1166 MTHCA_GET(size, outbox, QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET);
1167 dev_lim->uar_scratch_entry_sz = size;
1168
1169 if (mthca_is_memfree(dev)) {
1170 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
1171 dev_lim->max_srq_sz = 1 << field;
1172 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
1173 dev_lim->max_qp_sz = 1 << field;
1174 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSZ_SRQ_OFFSET);
1175 dev_lim->hca.arbel.resize_srq = field & 1;
1176 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_RQ_OFFSET);
1177 dev_lim->max_sg = min_t(int, field, dev_lim->max_sg);
1178 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET);
1179 dev_lim->max_desc_sz = min_t(int, size, dev_lim->max_desc_sz);
1180 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET);
1181 dev_lim->mpt_entry_sz = size;
1182 MTHCA_GET(field, outbox, QUERY_DEV_LIM_PBL_SZ_OFFSET);
1183 dev_lim->hca.arbel.max_pbl_sz = 1 << (field & 0x3f);
1184 MTHCA_GET(dev_lim->hca.arbel.bmme_flags, outbox,
1185 QUERY_DEV_LIM_BMME_FLAGS_OFFSET);
1186 MTHCA_GET(dev_lim->hca.arbel.reserved_lkey, outbox,
1187 QUERY_DEV_LIM_RSVD_LKEY_OFFSET);
1188 MTHCA_GET(field, outbox, QUERY_DEV_LIM_LAMR_OFFSET);
1189 dev_lim->hca.arbel.lam_required = field & 1;
1190 MTHCA_GET(dev_lim->hca.arbel.max_icm_sz, outbox,
1191 QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET);
1192
1193 if (dev_lim->hca.arbel.bmme_flags & 1)
1194 mthca_dbg(dev, "Base MM extensions: yes "
1195 "(flags %d, max PBL %d, rsvd L_Key %08x)\n",
1196 dev_lim->hca.arbel.bmme_flags,
1197 dev_lim->hca.arbel.max_pbl_sz,
1198 dev_lim->hca.arbel.reserved_lkey);
1199 else
1200 mthca_dbg(dev, "Base MM extensions: no\n");
1201
1202 mthca_dbg(dev, "Max ICM size %lld MB\n",
1203 (unsigned long long) dev_lim->hca.arbel.max_icm_sz >> 20);
1204 } else {
1205 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
1206 dev_lim->max_srq_sz = (1 << field) - 1;
1207 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
1208 dev_lim->max_qp_sz = (1 << field) - 1;
1209 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_AV_OFFSET);
1210 dev_lim->hca.tavor.max_avs = 1 << (field & 0x3f);
1211 dev_lim->mpt_entry_sz = MTHCA_MPT_ENTRY_SIZE;
1212 }
1213
1214 mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
1215 dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
1216 mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
1217 dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
1218 mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
1219 dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
1220 mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
1221 dev_lim->max_eqs, dev_lim->reserved_eqs, dev_lim->eqc_entry_sz);
1222 mthca_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
1223 dev_lim->reserved_mrws, dev_lim->reserved_mtts);
1224 mthca_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
1225 dev_lim->max_pds, dev_lim->reserved_pds, dev_lim->reserved_uars);
1226 mthca_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
1227 dev_lim->max_pds, dev_lim->reserved_mgms);
1228 mthca_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
1229 dev_lim->max_cq_sz, dev_lim->max_qp_sz, dev_lim->max_srq_sz);
1230
1231 mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags);
1232
1233 out:
1234 mthca_free_mailbox(dev, mailbox);
1235 return err;
1236 }
1237
get_board_id(void * vsd,char * board_id)1238 static void get_board_id(void *vsd, char *board_id)
1239 {
1240 int i;
1241
1242 #define VSD_OFFSET_SIG1 0x00
1243 #define VSD_OFFSET_SIG2 0xde
1244 #define VSD_OFFSET_MLX_BOARD_ID 0xd0
1245 #define VSD_OFFSET_TS_BOARD_ID 0x20
1246
1247 #define VSD_SIGNATURE_TOPSPIN 0x5ad
1248
1249 memset(board_id, 0, MTHCA_BOARD_ID_LEN);
1250
1251 if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
1252 be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
1253 strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MTHCA_BOARD_ID_LEN);
1254 } else {
1255 /*
1256 * The board ID is a string but the firmware byte
1257 * swaps each 4-byte word before passing it back to
1258 * us. Therefore we need to swab it before printing.
1259 */
1260 for (i = 0; i < 4; ++i)
1261 ((u32 *) board_id)[i] =
1262 swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
1263 }
1264 }
1265
mthca_QUERY_ADAPTER(struct mthca_dev * dev,struct mthca_adapter * adapter)1266 int mthca_QUERY_ADAPTER(struct mthca_dev *dev,
1267 struct mthca_adapter *adapter)
1268 {
1269 struct mthca_mailbox *mailbox;
1270 u32 *outbox;
1271 int err;
1272
1273 #define QUERY_ADAPTER_OUT_SIZE 0x100
1274 #define QUERY_ADAPTER_VENDOR_ID_OFFSET 0x00
1275 #define QUERY_ADAPTER_DEVICE_ID_OFFSET 0x04
1276 #define QUERY_ADAPTER_REVISION_ID_OFFSET 0x08
1277 #define QUERY_ADAPTER_INTA_PIN_OFFSET 0x10
1278 #define QUERY_ADAPTER_VSD_OFFSET 0x20
1279
1280 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1281 if (IS_ERR(mailbox))
1282 return PTR_ERR(mailbox);
1283 outbox = mailbox->buf;
1284
1285 err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_ADAPTER,
1286 CMD_TIME_CLASS_A);
1287
1288 if (err)
1289 goto out;
1290
1291 if (!mthca_is_memfree(dev)) {
1292 MTHCA_GET(adapter->vendor_id, outbox,
1293 QUERY_ADAPTER_VENDOR_ID_OFFSET);
1294 MTHCA_GET(adapter->device_id, outbox,
1295 QUERY_ADAPTER_DEVICE_ID_OFFSET);
1296 MTHCA_GET(adapter->revision_id, outbox,
1297 QUERY_ADAPTER_REVISION_ID_OFFSET);
1298 }
1299 MTHCA_GET(adapter->inta_pin, outbox, QUERY_ADAPTER_INTA_PIN_OFFSET);
1300
1301 get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
1302 adapter->board_id);
1303
1304 out:
1305 mthca_free_mailbox(dev, mailbox);
1306 return err;
1307 }
1308
mthca_INIT_HCA(struct mthca_dev * dev,struct mthca_init_hca_param * param)1309 int mthca_INIT_HCA(struct mthca_dev *dev,
1310 struct mthca_init_hca_param *param)
1311 {
1312 struct mthca_mailbox *mailbox;
1313 __be32 *inbox;
1314 int err;
1315
1316 #define INIT_HCA_IN_SIZE 0x200
1317 #define INIT_HCA_FLAGS1_OFFSET 0x00c
1318 #define INIT_HCA_FLAGS2_OFFSET 0x014
1319 #define INIT_HCA_QPC_OFFSET 0x020
1320 #define INIT_HCA_QPC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x10)
1321 #define INIT_HCA_LOG_QP_OFFSET (INIT_HCA_QPC_OFFSET + 0x17)
1322 #define INIT_HCA_EEC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x20)
1323 #define INIT_HCA_LOG_EEC_OFFSET (INIT_HCA_QPC_OFFSET + 0x27)
1324 #define INIT_HCA_SRQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x28)
1325 #define INIT_HCA_LOG_SRQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x2f)
1326 #define INIT_HCA_CQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x30)
1327 #define INIT_HCA_LOG_CQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x37)
1328 #define INIT_HCA_EQPC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x40)
1329 #define INIT_HCA_EEEC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x50)
1330 #define INIT_HCA_EQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x60)
1331 #define INIT_HCA_LOG_EQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x67)
1332 #define INIT_HCA_RDB_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x70)
1333 #define INIT_HCA_UDAV_OFFSET 0x0b0
1334 #define INIT_HCA_UDAV_LKEY_OFFSET (INIT_HCA_UDAV_OFFSET + 0x0)
1335 #define INIT_HCA_UDAV_PD_OFFSET (INIT_HCA_UDAV_OFFSET + 0x4)
1336 #define INIT_HCA_MCAST_OFFSET 0x0c0
1337 #define INIT_HCA_MC_BASE_OFFSET (INIT_HCA_MCAST_OFFSET + 0x00)
1338 #define INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
1339 #define INIT_HCA_MC_HASH_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x16)
1340 #define INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
1341 #define INIT_HCA_TPT_OFFSET 0x0f0
1342 #define INIT_HCA_MPT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x00)
1343 #define INIT_HCA_MTT_SEG_SZ_OFFSET (INIT_HCA_TPT_OFFSET + 0x09)
1344 #define INIT_HCA_LOG_MPT_SZ_OFFSET (INIT_HCA_TPT_OFFSET + 0x0b)
1345 #define INIT_HCA_MTT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x10)
1346 #define INIT_HCA_UAR_OFFSET 0x120
1347 #define INIT_HCA_UAR_BASE_OFFSET (INIT_HCA_UAR_OFFSET + 0x00)
1348 #define INIT_HCA_UARC_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x09)
1349 #define INIT_HCA_LOG_UAR_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x0a)
1350 #define INIT_HCA_UAR_PAGE_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x0b)
1351 #define INIT_HCA_UAR_SCATCH_BASE_OFFSET (INIT_HCA_UAR_OFFSET + 0x10)
1352 #define INIT_HCA_UAR_CTX_BASE_OFFSET (INIT_HCA_UAR_OFFSET + 0x18)
1353
1354 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1355 if (IS_ERR(mailbox))
1356 return PTR_ERR(mailbox);
1357 inbox = mailbox->buf;
1358
1359 memset(inbox, 0, INIT_HCA_IN_SIZE);
1360
1361 if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
1362 MTHCA_PUT(inbox, 0x1, INIT_HCA_FLAGS1_OFFSET);
1363
1364 #if defined(__LITTLE_ENDIAN)
1365 *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
1366 #elif defined(__BIG_ENDIAN)
1367 *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1 << 1);
1368 #else
1369 #error Host endianness not defined
1370 #endif
1371 /* Check port for UD address vector: */
1372 *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1);
1373
1374 /* Enable IPoIB checksumming if we can: */
1375 if (dev->device_cap_flags & IB_DEVICE_UD_IP_CSUM)
1376 *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(7 << 3);
1377
1378 /* We leave wqe_quota, responder_exu, etc as 0 (default) */
1379
1380 /* QPC/EEC/CQC/EQC/RDB attributes */
1381
1382 MTHCA_PUT(inbox, param->qpc_base, INIT_HCA_QPC_BASE_OFFSET);
1383 MTHCA_PUT(inbox, param->log_num_qps, INIT_HCA_LOG_QP_OFFSET);
1384 MTHCA_PUT(inbox, param->eec_base, INIT_HCA_EEC_BASE_OFFSET);
1385 MTHCA_PUT(inbox, param->log_num_eecs, INIT_HCA_LOG_EEC_OFFSET);
1386 MTHCA_PUT(inbox, param->srqc_base, INIT_HCA_SRQC_BASE_OFFSET);
1387 MTHCA_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
1388 MTHCA_PUT(inbox, param->cqc_base, INIT_HCA_CQC_BASE_OFFSET);
1389 MTHCA_PUT(inbox, param->log_num_cqs, INIT_HCA_LOG_CQ_OFFSET);
1390 MTHCA_PUT(inbox, param->eqpc_base, INIT_HCA_EQPC_BASE_OFFSET);
1391 MTHCA_PUT(inbox, param->eeec_base, INIT_HCA_EEEC_BASE_OFFSET);
1392 MTHCA_PUT(inbox, param->eqc_base, INIT_HCA_EQC_BASE_OFFSET);
1393 MTHCA_PUT(inbox, param->log_num_eqs, INIT_HCA_LOG_EQ_OFFSET);
1394 MTHCA_PUT(inbox, param->rdb_base, INIT_HCA_RDB_BASE_OFFSET);
1395
1396 /* UD AV attributes */
1397
1398 /* multicast attributes */
1399
1400 MTHCA_PUT(inbox, param->mc_base, INIT_HCA_MC_BASE_OFFSET);
1401 MTHCA_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
1402 MTHCA_PUT(inbox, param->mc_hash_sz, INIT_HCA_MC_HASH_SZ_OFFSET);
1403 MTHCA_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
1404
1405 /* TPT attributes */
1406
1407 MTHCA_PUT(inbox, param->mpt_base, INIT_HCA_MPT_BASE_OFFSET);
1408 if (!mthca_is_memfree(dev))
1409 MTHCA_PUT(inbox, param->mtt_seg_sz, INIT_HCA_MTT_SEG_SZ_OFFSET);
1410 MTHCA_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
1411 MTHCA_PUT(inbox, param->mtt_base, INIT_HCA_MTT_BASE_OFFSET);
1412
1413 /* UAR attributes */
1414 {
1415 u8 uar_page_sz = PAGE_SHIFT - 12;
1416 MTHCA_PUT(inbox, uar_page_sz, INIT_HCA_UAR_PAGE_SZ_OFFSET);
1417 }
1418
1419 MTHCA_PUT(inbox, param->uar_scratch_base, INIT_HCA_UAR_SCATCH_BASE_OFFSET);
1420
1421 if (mthca_is_memfree(dev)) {
1422 MTHCA_PUT(inbox, param->log_uarc_sz, INIT_HCA_UARC_SZ_OFFSET);
1423 MTHCA_PUT(inbox, param->log_uar_sz, INIT_HCA_LOG_UAR_SZ_OFFSET);
1424 MTHCA_PUT(inbox, param->uarc_base, INIT_HCA_UAR_CTX_BASE_OFFSET);
1425 }
1426
1427 err = mthca_cmd(dev, mailbox->dma, 0, 0,
1428 CMD_INIT_HCA, CMD_TIME_CLASS_D);
1429
1430 mthca_free_mailbox(dev, mailbox);
1431 return err;
1432 }
1433
mthca_INIT_IB(struct mthca_dev * dev,struct mthca_init_ib_param * param,int port)1434 int mthca_INIT_IB(struct mthca_dev *dev,
1435 struct mthca_init_ib_param *param,
1436 int port)
1437 {
1438 struct mthca_mailbox *mailbox;
1439 u32 *inbox;
1440 int err;
1441 u32 flags;
1442
1443 #define INIT_IB_IN_SIZE 56
1444 #define INIT_IB_FLAGS_OFFSET 0x00
1445 #define INIT_IB_FLAG_SIG (1 << 18)
1446 #define INIT_IB_FLAG_NG (1 << 17)
1447 #define INIT_IB_FLAG_G0 (1 << 16)
1448 #define INIT_IB_VL_SHIFT 4
1449 #define INIT_IB_PORT_WIDTH_SHIFT 8
1450 #define INIT_IB_MTU_SHIFT 12
1451 #define INIT_IB_MAX_GID_OFFSET 0x06
1452 #define INIT_IB_MAX_PKEY_OFFSET 0x0a
1453 #define INIT_IB_GUID0_OFFSET 0x10
1454 #define INIT_IB_NODE_GUID_OFFSET 0x18
1455 #define INIT_IB_SI_GUID_OFFSET 0x20
1456
1457 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1458 if (IS_ERR(mailbox))
1459 return PTR_ERR(mailbox);
1460 inbox = mailbox->buf;
1461
1462 memset(inbox, 0, INIT_IB_IN_SIZE);
1463
1464 flags = 0;
1465 flags |= param->set_guid0 ? INIT_IB_FLAG_G0 : 0;
1466 flags |= param->set_node_guid ? INIT_IB_FLAG_NG : 0;
1467 flags |= param->set_si_guid ? INIT_IB_FLAG_SIG : 0;
1468 flags |= param->vl_cap << INIT_IB_VL_SHIFT;
1469 flags |= param->port_width << INIT_IB_PORT_WIDTH_SHIFT;
1470 flags |= param->mtu_cap << INIT_IB_MTU_SHIFT;
1471 MTHCA_PUT(inbox, flags, INIT_IB_FLAGS_OFFSET);
1472
1473 MTHCA_PUT(inbox, param->gid_cap, INIT_IB_MAX_GID_OFFSET);
1474 MTHCA_PUT(inbox, param->pkey_cap, INIT_IB_MAX_PKEY_OFFSET);
1475 MTHCA_PUT(inbox, param->guid0, INIT_IB_GUID0_OFFSET);
1476 MTHCA_PUT(inbox, param->node_guid, INIT_IB_NODE_GUID_OFFSET);
1477 MTHCA_PUT(inbox, param->si_guid, INIT_IB_SI_GUID_OFFSET);
1478
1479 err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_INIT_IB,
1480 CMD_TIME_CLASS_A);
1481
1482 mthca_free_mailbox(dev, mailbox);
1483 return err;
1484 }
1485
mthca_CLOSE_IB(struct mthca_dev * dev,int port)1486 int mthca_CLOSE_IB(struct mthca_dev *dev, int port)
1487 {
1488 return mthca_cmd(dev, 0, port, 0, CMD_CLOSE_IB, CMD_TIME_CLASS_A);
1489 }
1490
mthca_CLOSE_HCA(struct mthca_dev * dev,int panic)1491 int mthca_CLOSE_HCA(struct mthca_dev *dev, int panic)
1492 {
1493 return mthca_cmd(dev, 0, 0, panic, CMD_CLOSE_HCA, CMD_TIME_CLASS_C);
1494 }
1495
mthca_SET_IB(struct mthca_dev * dev,struct mthca_set_ib_param * param,int port)1496 int mthca_SET_IB(struct mthca_dev *dev, struct mthca_set_ib_param *param,
1497 int port)
1498 {
1499 struct mthca_mailbox *mailbox;
1500 u32 *inbox;
1501 int err;
1502 u32 flags = 0;
1503
1504 #define SET_IB_IN_SIZE 0x40
1505 #define SET_IB_FLAGS_OFFSET 0x00
1506 #define SET_IB_FLAG_SIG (1 << 18)
1507 #define SET_IB_FLAG_RQK (1 << 0)
1508 #define SET_IB_CAP_MASK_OFFSET 0x04
1509 #define SET_IB_SI_GUID_OFFSET 0x08
1510
1511 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1512 if (IS_ERR(mailbox))
1513 return PTR_ERR(mailbox);
1514 inbox = mailbox->buf;
1515
1516 memset(inbox, 0, SET_IB_IN_SIZE);
1517
1518 flags |= param->set_si_guid ? SET_IB_FLAG_SIG : 0;
1519 flags |= param->reset_qkey_viol ? SET_IB_FLAG_RQK : 0;
1520 MTHCA_PUT(inbox, flags, SET_IB_FLAGS_OFFSET);
1521
1522 MTHCA_PUT(inbox, param->cap_mask, SET_IB_CAP_MASK_OFFSET);
1523 MTHCA_PUT(inbox, param->si_guid, SET_IB_SI_GUID_OFFSET);
1524
1525 err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_SET_IB,
1526 CMD_TIME_CLASS_B);
1527
1528 mthca_free_mailbox(dev, mailbox);
1529 return err;
1530 }
1531
mthca_MAP_ICM(struct mthca_dev * dev,struct mthca_icm * icm,u64 virt)1532 int mthca_MAP_ICM(struct mthca_dev *dev, struct mthca_icm *icm, u64 virt)
1533 {
1534 return mthca_map_cmd(dev, CMD_MAP_ICM, icm, virt);
1535 }
1536
mthca_MAP_ICM_page(struct mthca_dev * dev,u64 dma_addr,u64 virt)1537 int mthca_MAP_ICM_page(struct mthca_dev *dev, u64 dma_addr, u64 virt)
1538 {
1539 struct mthca_mailbox *mailbox;
1540 __be64 *inbox;
1541 int err;
1542
1543 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1544 if (IS_ERR(mailbox))
1545 return PTR_ERR(mailbox);
1546 inbox = mailbox->buf;
1547
1548 inbox[0] = cpu_to_be64(virt);
1549 inbox[1] = cpu_to_be64(dma_addr);
1550
1551 err = mthca_cmd(dev, mailbox->dma, 1, 0, CMD_MAP_ICM,
1552 CMD_TIME_CLASS_B);
1553
1554 mthca_free_mailbox(dev, mailbox);
1555
1556 if (!err)
1557 mthca_dbg(dev, "Mapped page at %llx to %llx for ICM.\n",
1558 (unsigned long long) dma_addr, (unsigned long long) virt);
1559
1560 return err;
1561 }
1562
mthca_UNMAP_ICM(struct mthca_dev * dev,u64 virt,u32 page_count)1563 int mthca_UNMAP_ICM(struct mthca_dev *dev, u64 virt, u32 page_count)
1564 {
1565 mthca_dbg(dev, "Unmapping %d pages at %llx from ICM.\n",
1566 page_count, (unsigned long long) virt);
1567
1568 return mthca_cmd(dev, virt, page_count, 0,
1569 CMD_UNMAP_ICM, CMD_TIME_CLASS_B);
1570 }
1571
mthca_MAP_ICM_AUX(struct mthca_dev * dev,struct mthca_icm * icm)1572 int mthca_MAP_ICM_AUX(struct mthca_dev *dev, struct mthca_icm *icm)
1573 {
1574 return mthca_map_cmd(dev, CMD_MAP_ICM_AUX, icm, -1);
1575 }
1576
mthca_UNMAP_ICM_AUX(struct mthca_dev * dev)1577 int mthca_UNMAP_ICM_AUX(struct mthca_dev *dev)
1578 {
1579 return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_ICM_AUX, CMD_TIME_CLASS_B);
1580 }
1581
mthca_SET_ICM_SIZE(struct mthca_dev * dev,u64 icm_size,u64 * aux_pages)1582 int mthca_SET_ICM_SIZE(struct mthca_dev *dev, u64 icm_size, u64 *aux_pages)
1583 {
1584 int ret = mthca_cmd_imm(dev, icm_size, aux_pages, 0,
1585 0, CMD_SET_ICM_SIZE, CMD_TIME_CLASS_A);
1586
1587 if (ret)
1588 return ret;
1589
1590 /*
1591 * Round up number of system pages needed in case
1592 * MTHCA_ICM_PAGE_SIZE < PAGE_SIZE.
1593 */
1594 *aux_pages = ALIGN(*aux_pages, PAGE_SIZE / MTHCA_ICM_PAGE_SIZE) >>
1595 (PAGE_SHIFT - MTHCA_ICM_PAGE_SHIFT);
1596
1597 return 0;
1598 }
1599
mthca_SW2HW_MPT(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int mpt_index)1600 int mthca_SW2HW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1601 int mpt_index)
1602 {
1603 return mthca_cmd(dev, mailbox->dma, mpt_index, 0, CMD_SW2HW_MPT,
1604 CMD_TIME_CLASS_B);
1605 }
1606
mthca_HW2SW_MPT(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int mpt_index)1607 int mthca_HW2SW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1608 int mpt_index)
1609 {
1610 return mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index,
1611 !mailbox, CMD_HW2SW_MPT,
1612 CMD_TIME_CLASS_B);
1613 }
1614
mthca_WRITE_MTT(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int num_mtt)1615 int mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1616 int num_mtt)
1617 {
1618 return mthca_cmd(dev, mailbox->dma, num_mtt, 0, CMD_WRITE_MTT,
1619 CMD_TIME_CLASS_B);
1620 }
1621
mthca_SYNC_TPT(struct mthca_dev * dev)1622 int mthca_SYNC_TPT(struct mthca_dev *dev)
1623 {
1624 return mthca_cmd(dev, 0, 0, 0, CMD_SYNC_TPT, CMD_TIME_CLASS_B);
1625 }
1626
mthca_MAP_EQ(struct mthca_dev * dev,u64 event_mask,int unmap,int eq_num)1627 int mthca_MAP_EQ(struct mthca_dev *dev, u64 event_mask, int unmap,
1628 int eq_num)
1629 {
1630 mthca_dbg(dev, "%s mask %016llx for eqn %d\n",
1631 unmap ? "Clearing" : "Setting",
1632 (unsigned long long) event_mask, eq_num);
1633 return mthca_cmd(dev, event_mask, (unmap << 31) | eq_num,
1634 0, CMD_MAP_EQ, CMD_TIME_CLASS_B);
1635 }
1636
mthca_SW2HW_EQ(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int eq_num)1637 int mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1638 int eq_num)
1639 {
1640 return mthca_cmd(dev, mailbox->dma, eq_num, 0, CMD_SW2HW_EQ,
1641 CMD_TIME_CLASS_A);
1642 }
1643
mthca_HW2SW_EQ(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int eq_num)1644 int mthca_HW2SW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1645 int eq_num)
1646 {
1647 return mthca_cmd_box(dev, 0, mailbox->dma, eq_num, 0,
1648 CMD_HW2SW_EQ,
1649 CMD_TIME_CLASS_A);
1650 }
1651
mthca_SW2HW_CQ(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int cq_num)1652 int mthca_SW2HW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1653 int cq_num)
1654 {
1655 return mthca_cmd(dev, mailbox->dma, cq_num, 0, CMD_SW2HW_CQ,
1656 CMD_TIME_CLASS_A);
1657 }
1658
mthca_HW2SW_CQ(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int cq_num)1659 int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1660 int cq_num)
1661 {
1662 return mthca_cmd_box(dev, 0, mailbox->dma, cq_num, 0,
1663 CMD_HW2SW_CQ,
1664 CMD_TIME_CLASS_A);
1665 }
1666
mthca_RESIZE_CQ(struct mthca_dev * dev,int cq_num,u32 lkey,u8 log_size)1667 int mthca_RESIZE_CQ(struct mthca_dev *dev, int cq_num, u32 lkey, u8 log_size)
1668 {
1669 struct mthca_mailbox *mailbox;
1670 __be32 *inbox;
1671 int err;
1672
1673 #define RESIZE_CQ_IN_SIZE 0x40
1674 #define RESIZE_CQ_LOG_SIZE_OFFSET 0x0c
1675 #define RESIZE_CQ_LKEY_OFFSET 0x1c
1676
1677 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1678 if (IS_ERR(mailbox))
1679 return PTR_ERR(mailbox);
1680 inbox = mailbox->buf;
1681
1682 memset(inbox, 0, RESIZE_CQ_IN_SIZE);
1683 /*
1684 * Leave start address fields zeroed out -- mthca assumes that
1685 * MRs for CQs always start at virtual address 0.
1686 */
1687 MTHCA_PUT(inbox, log_size, RESIZE_CQ_LOG_SIZE_OFFSET);
1688 MTHCA_PUT(inbox, lkey, RESIZE_CQ_LKEY_OFFSET);
1689
1690 err = mthca_cmd(dev, mailbox->dma, cq_num, 1, CMD_RESIZE_CQ,
1691 CMD_TIME_CLASS_B);
1692
1693 mthca_free_mailbox(dev, mailbox);
1694 return err;
1695 }
1696
mthca_SW2HW_SRQ(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int srq_num)1697 int mthca_SW2HW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1698 int srq_num)
1699 {
1700 return mthca_cmd(dev, mailbox->dma, srq_num, 0, CMD_SW2HW_SRQ,
1701 CMD_TIME_CLASS_A);
1702 }
1703
mthca_HW2SW_SRQ(struct mthca_dev * dev,struct mthca_mailbox * mailbox,int srq_num)1704 int mthca_HW2SW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1705 int srq_num)
1706 {
1707 return mthca_cmd_box(dev, 0, mailbox->dma, srq_num, 0,
1708 CMD_HW2SW_SRQ,
1709 CMD_TIME_CLASS_A);
1710 }
1711
mthca_QUERY_SRQ(struct mthca_dev * dev,u32 num,struct mthca_mailbox * mailbox)1712 int mthca_QUERY_SRQ(struct mthca_dev *dev, u32 num,
1713 struct mthca_mailbox *mailbox)
1714 {
1715 return mthca_cmd_box(dev, 0, mailbox->dma, num, 0,
1716 CMD_QUERY_SRQ, CMD_TIME_CLASS_A);
1717 }
1718
mthca_ARM_SRQ(struct mthca_dev * dev,int srq_num,int limit)1719 int mthca_ARM_SRQ(struct mthca_dev *dev, int srq_num, int limit)
1720 {
1721 return mthca_cmd(dev, limit, srq_num, 0, CMD_ARM_SRQ,
1722 CMD_TIME_CLASS_B);
1723 }
1724
mthca_MODIFY_QP(struct mthca_dev * dev,enum ib_qp_state cur,enum ib_qp_state next,u32 num,int is_ee,struct mthca_mailbox * mailbox,u32 optmask)1725 int mthca_MODIFY_QP(struct mthca_dev *dev, enum ib_qp_state cur,
1726 enum ib_qp_state next, u32 num, int is_ee,
1727 struct mthca_mailbox *mailbox, u32 optmask)
1728 {
1729 static const u16 op[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
1730 [IB_QPS_RESET] = {
1731 [IB_QPS_RESET] = CMD_ERR2RST_QPEE,
1732 [IB_QPS_ERR] = CMD_2ERR_QPEE,
1733 [IB_QPS_INIT] = CMD_RST2INIT_QPEE,
1734 },
1735 [IB_QPS_INIT] = {
1736 [IB_QPS_RESET] = CMD_ERR2RST_QPEE,
1737 [IB_QPS_ERR] = CMD_2ERR_QPEE,
1738 [IB_QPS_INIT] = CMD_INIT2INIT_QPEE,
1739 [IB_QPS_RTR] = CMD_INIT2RTR_QPEE,
1740 },
1741 [IB_QPS_RTR] = {
1742 [IB_QPS_RESET] = CMD_ERR2RST_QPEE,
1743 [IB_QPS_ERR] = CMD_2ERR_QPEE,
1744 [IB_QPS_RTS] = CMD_RTR2RTS_QPEE,
1745 },
1746 [IB_QPS_RTS] = {
1747 [IB_QPS_RESET] = CMD_ERR2RST_QPEE,
1748 [IB_QPS_ERR] = CMD_2ERR_QPEE,
1749 [IB_QPS_RTS] = CMD_RTS2RTS_QPEE,
1750 [IB_QPS_SQD] = CMD_RTS2SQD_QPEE,
1751 },
1752 [IB_QPS_SQD] = {
1753 [IB_QPS_RESET] = CMD_ERR2RST_QPEE,
1754 [IB_QPS_ERR] = CMD_2ERR_QPEE,
1755 [IB_QPS_RTS] = CMD_SQD2RTS_QPEE,
1756 [IB_QPS_SQD] = CMD_SQD2SQD_QPEE,
1757 },
1758 [IB_QPS_SQE] = {
1759 [IB_QPS_RESET] = CMD_ERR2RST_QPEE,
1760 [IB_QPS_ERR] = CMD_2ERR_QPEE,
1761 [IB_QPS_RTS] = CMD_SQERR2RTS_QPEE,
1762 },
1763 [IB_QPS_ERR] = {
1764 [IB_QPS_RESET] = CMD_ERR2RST_QPEE,
1765 [IB_QPS_ERR] = CMD_2ERR_QPEE,
1766 }
1767 };
1768
1769 u8 op_mod = 0;
1770 int my_mailbox = 0;
1771 int err;
1772
1773 if (op[cur][next] == CMD_ERR2RST_QPEE) {
1774 op_mod = 3; /* don't write outbox, any->reset */
1775
1776 /* For debugging */
1777 if (!mailbox) {
1778 mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1779 if (!IS_ERR(mailbox)) {
1780 my_mailbox = 1;
1781 op_mod = 2; /* write outbox, any->reset */
1782 } else
1783 mailbox = NULL;
1784 }
1785
1786 err = mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0,
1787 (!!is_ee << 24) | num, op_mod,
1788 op[cur][next], CMD_TIME_CLASS_C);
1789
1790 if (0 && mailbox) {
1791 int i;
1792 mthca_dbg(dev, "Dumping QP context:\n");
1793 printk(" %08x\n", be32_to_cpup(mailbox->buf));
1794 for (i = 0; i < 0x100 / 4; ++i) {
1795 if (i % 8 == 0)
1796 printk("[%02x] ", i * 4);
1797 printk(" %08x",
1798 be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1799 if ((i + 1) % 8 == 0)
1800 printk("\n");
1801 }
1802 }
1803
1804 if (my_mailbox)
1805 mthca_free_mailbox(dev, mailbox);
1806 } else {
1807 if (0) {
1808 int i;
1809 mthca_dbg(dev, "Dumping QP context:\n");
1810 printk(" opt param mask: %08x\n", be32_to_cpup(mailbox->buf));
1811 for (i = 0; i < 0x100 / 4; ++i) {
1812 if (i % 8 == 0)
1813 printk(" [%02x] ", i * 4);
1814 printk(" %08x",
1815 be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1816 if ((i + 1) % 8 == 0)
1817 printk("\n");
1818 }
1819 }
1820
1821 err = mthca_cmd(dev, mailbox->dma, optmask | (!!is_ee << 24) | num,
1822 op_mod, op[cur][next], CMD_TIME_CLASS_C);
1823 }
1824
1825 return err;
1826 }
1827
mthca_QUERY_QP(struct mthca_dev * dev,u32 num,int is_ee,struct mthca_mailbox * mailbox)1828 int mthca_QUERY_QP(struct mthca_dev *dev, u32 num, int is_ee,
1829 struct mthca_mailbox *mailbox)
1830 {
1831 return mthca_cmd_box(dev, 0, mailbox->dma, (!!is_ee << 24) | num, 0,
1832 CMD_QUERY_QPEE, CMD_TIME_CLASS_A);
1833 }
1834
mthca_CONF_SPECIAL_QP(struct mthca_dev * dev,int type,u32 qpn)1835 int mthca_CONF_SPECIAL_QP(struct mthca_dev *dev, int type, u32 qpn)
1836 {
1837 u8 op_mod;
1838
1839 switch (type) {
1840 case IB_QPT_SMI:
1841 op_mod = 0;
1842 break;
1843 case IB_QPT_GSI:
1844 op_mod = 1;
1845 break;
1846 case IB_QPT_RAW_IPV6:
1847 op_mod = 2;
1848 break;
1849 case IB_QPT_RAW_ETHERTYPE:
1850 op_mod = 3;
1851 break;
1852 default:
1853 return -EINVAL;
1854 }
1855
1856 return mthca_cmd(dev, 0, qpn, op_mod, CMD_CONF_SPECIAL_QP,
1857 CMD_TIME_CLASS_B);
1858 }
1859
mthca_MAD_IFC(struct mthca_dev * dev,int ignore_mkey,int ignore_bkey,int port,struct ib_wc * in_wc,struct ib_grh * in_grh,void * in_mad,void * response_mad)1860 int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
1861 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
1862 void *in_mad, void *response_mad)
1863 {
1864 struct mthca_mailbox *inmailbox, *outmailbox;
1865 void *inbox;
1866 int err;
1867 u32 in_modifier = port;
1868 u8 op_modifier = 0;
1869
1870 #define MAD_IFC_BOX_SIZE 0x400
1871 #define MAD_IFC_MY_QPN_OFFSET 0x100
1872 #define MAD_IFC_RQPN_OFFSET 0x108
1873 #define MAD_IFC_SL_OFFSET 0x10c
1874 #define MAD_IFC_G_PATH_OFFSET 0x10d
1875 #define MAD_IFC_RLID_OFFSET 0x10e
1876 #define MAD_IFC_PKEY_OFFSET 0x112
1877 #define MAD_IFC_GRH_OFFSET 0x140
1878
1879 inmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1880 if (IS_ERR(inmailbox))
1881 return PTR_ERR(inmailbox);
1882 inbox = inmailbox->buf;
1883
1884 outmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1885 if (IS_ERR(outmailbox)) {
1886 mthca_free_mailbox(dev, inmailbox);
1887 return PTR_ERR(outmailbox);
1888 }
1889
1890 memcpy(inbox, in_mad, 256);
1891
1892 /*
1893 * Key check traps can't be generated unless we have in_wc to
1894 * tell us where to send the trap.
1895 */
1896 if (ignore_mkey || !in_wc)
1897 op_modifier |= 0x1;
1898 if (ignore_bkey || !in_wc)
1899 op_modifier |= 0x2;
1900
1901 if (in_wc) {
1902 u8 val;
1903
1904 memset(inbox + 256, 0, 256);
1905
1906 MTHCA_PUT(inbox, in_wc->qp->qp_num, MAD_IFC_MY_QPN_OFFSET);
1907 MTHCA_PUT(inbox, in_wc->src_qp, MAD_IFC_RQPN_OFFSET);
1908
1909 val = in_wc->sl << 4;
1910 MTHCA_PUT(inbox, val, MAD_IFC_SL_OFFSET);
1911
1912 val = in_wc->dlid_path_bits |
1913 (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0);
1914 MTHCA_PUT(inbox, val, MAD_IFC_G_PATH_OFFSET);
1915
1916 MTHCA_PUT(inbox, in_wc->slid, MAD_IFC_RLID_OFFSET);
1917 MTHCA_PUT(inbox, in_wc->pkey_index, MAD_IFC_PKEY_OFFSET);
1918
1919 if (in_grh)
1920 memcpy(inbox + MAD_IFC_GRH_OFFSET, in_grh, 40);
1921
1922 op_modifier |= 0x4;
1923
1924 in_modifier |= in_wc->slid << 16;
1925 }
1926
1927 err = mthca_cmd_box(dev, inmailbox->dma, outmailbox->dma,
1928 in_modifier, op_modifier,
1929 CMD_MAD_IFC, CMD_TIME_CLASS_C);
1930
1931 if (!err)
1932 memcpy(response_mad, outmailbox->buf, 256);
1933
1934 mthca_free_mailbox(dev, inmailbox);
1935 mthca_free_mailbox(dev, outmailbox);
1936 return err;
1937 }
1938
mthca_READ_MGM(struct mthca_dev * dev,int index,struct mthca_mailbox * mailbox)1939 int mthca_READ_MGM(struct mthca_dev *dev, int index,
1940 struct mthca_mailbox *mailbox)
1941 {
1942 return mthca_cmd_box(dev, 0, mailbox->dma, index, 0,
1943 CMD_READ_MGM, CMD_TIME_CLASS_A);
1944 }
1945
mthca_WRITE_MGM(struct mthca_dev * dev,int index,struct mthca_mailbox * mailbox)1946 int mthca_WRITE_MGM(struct mthca_dev *dev, int index,
1947 struct mthca_mailbox *mailbox)
1948 {
1949 return mthca_cmd(dev, mailbox->dma, index, 0, CMD_WRITE_MGM,
1950 CMD_TIME_CLASS_A);
1951 }
1952
mthca_MGID_HASH(struct mthca_dev * dev,struct mthca_mailbox * mailbox,u16 * hash)1953 int mthca_MGID_HASH(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1954 u16 *hash)
1955 {
1956 u64 imm;
1957 int err;
1958
1959 err = mthca_cmd_imm(dev, mailbox->dma, &imm, 0, 0, CMD_MGID_HASH,
1960 CMD_TIME_CLASS_A);
1961
1962 *hash = imm;
1963 return err;
1964 }
1965
mthca_NOP(struct mthca_dev * dev)1966 int mthca_NOP(struct mthca_dev *dev)
1967 {
1968 return mthca_cmd(dev, 0, 0x1f, 0, CMD_NOP, msecs_to_jiffies(100));
1969 }
1970