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e126ba97 EC |
1 | /* |
2 | * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved. | |
3 | * | |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | */ | |
32 | ||
33 | ||
34 | #include <linux/kref.h> | |
35 | #include <linux/random.h> | |
36 | #include <linux/debugfs.h> | |
37 | #include <linux/export.h> | |
746b5583 | 38 | #include <linux/delay.h> |
e126ba97 EC |
39 | #include <rdma/ib_umem.h> |
40 | #include "mlx5_ib.h" | |
41 | ||
42 | enum { | |
746b5583 | 43 | MAX_PENDING_REG_MR = 8, |
e126ba97 EC |
44 | }; |
45 | ||
fe45f827 EC |
46 | enum { |
47 | MLX5_UMR_ALIGN = 2048 | |
48 | }; | |
49 | ||
e126ba97 EC |
50 | static __be64 *mr_align(__be64 *ptr, int align) |
51 | { | |
52 | unsigned long mask = align - 1; | |
53 | ||
54 | return (__be64 *)(((unsigned long)ptr + mask) & ~mask); | |
55 | } | |
56 | ||
57 | static int order2idx(struct mlx5_ib_dev *dev, int order) | |
58 | { | |
59 | struct mlx5_mr_cache *cache = &dev->cache; | |
60 | ||
61 | if (order < cache->ent[0].order) | |
62 | return 0; | |
63 | else | |
64 | return order - cache->ent[0].order; | |
65 | } | |
66 | ||
746b5583 EC |
67 | static void reg_mr_callback(int status, void *context) |
68 | { | |
69 | struct mlx5_ib_mr *mr = context; | |
70 | struct mlx5_ib_dev *dev = mr->dev; | |
71 | struct mlx5_mr_cache *cache = &dev->cache; | |
72 | int c = order2idx(dev, mr->order); | |
73 | struct mlx5_cache_ent *ent = &cache->ent[c]; | |
74 | u8 key; | |
746b5583 EC |
75 | unsigned long flags; |
76 | ||
746b5583 EC |
77 | spin_lock_irqsave(&ent->lock, flags); |
78 | ent->pending--; | |
79 | spin_unlock_irqrestore(&ent->lock, flags); | |
80 | if (status) { | |
81 | mlx5_ib_warn(dev, "async reg mr failed. status %d\n", status); | |
82 | kfree(mr); | |
83 | dev->fill_delay = 1; | |
84 | mod_timer(&dev->delay_timer, jiffies + HZ); | |
85 | return; | |
86 | } | |
87 | ||
88 | if (mr->out.hdr.status) { | |
89 | mlx5_ib_warn(dev, "failed - status %d, syndorme 0x%x\n", | |
90 | mr->out.hdr.status, | |
91 | be32_to_cpu(mr->out.hdr.syndrome)); | |
92 | kfree(mr); | |
93 | dev->fill_delay = 1; | |
94 | mod_timer(&dev->delay_timer, jiffies + HZ); | |
95 | return; | |
96 | } | |
97 | ||
98 | spin_lock_irqsave(&dev->mdev.priv.mkey_lock, flags); | |
99 | key = dev->mdev.priv.mkey_key++; | |
100 | spin_unlock_irqrestore(&dev->mdev.priv.mkey_lock, flags); | |
101 | mr->mmr.key = mlx5_idx_to_mkey(be32_to_cpu(mr->out.mkey) & 0xffffff) | key; | |
102 | ||
103 | cache->last_add = jiffies; | |
104 | ||
105 | spin_lock_irqsave(&ent->lock, flags); | |
106 | list_add_tail(&mr->list, &ent->head); | |
107 | ent->cur++; | |
108 | ent->size++; | |
109 | spin_unlock_irqrestore(&ent->lock, flags); | |
110 | } | |
111 | ||
e126ba97 EC |
112 | static int add_keys(struct mlx5_ib_dev *dev, int c, int num) |
113 | { | |
e126ba97 EC |
114 | struct mlx5_mr_cache *cache = &dev->cache; |
115 | struct mlx5_cache_ent *ent = &cache->ent[c]; | |
116 | struct mlx5_create_mkey_mbox_in *in; | |
117 | struct mlx5_ib_mr *mr; | |
118 | int npages = 1 << ent->order; | |
e126ba97 EC |
119 | int err = 0; |
120 | int i; | |
121 | ||
122 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
123 | if (!in) | |
124 | return -ENOMEM; | |
125 | ||
126 | for (i = 0; i < num; i++) { | |
746b5583 EC |
127 | if (ent->pending >= MAX_PENDING_REG_MR) { |
128 | err = -EAGAIN; | |
129 | break; | |
130 | } | |
131 | ||
e126ba97 EC |
132 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
133 | if (!mr) { | |
134 | err = -ENOMEM; | |
746b5583 | 135 | break; |
e126ba97 EC |
136 | } |
137 | mr->order = ent->order; | |
138 | mr->umred = 1; | |
746b5583 | 139 | mr->dev = dev; |
e126ba97 EC |
140 | in->seg.status = 1 << 6; |
141 | in->seg.xlt_oct_size = cpu_to_be32((npages + 1) / 2); | |
142 | in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
143 | in->seg.flags = MLX5_ACCESS_MODE_MTT | MLX5_PERM_UMR_EN; | |
144 | in->seg.log2_page_size = 12; | |
145 | ||
746b5583 EC |
146 | spin_lock_irq(&ent->lock); |
147 | ent->pending++; | |
148 | spin_unlock_irq(&ent->lock); | |
e126ba97 | 149 | err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, |
746b5583 EC |
150 | sizeof(*in), reg_mr_callback, |
151 | mr, &mr->out); | |
e126ba97 EC |
152 | if (err) { |
153 | mlx5_ib_warn(dev, "create mkey failed %d\n", err); | |
e126ba97 | 154 | kfree(mr); |
746b5583 | 155 | break; |
e126ba97 | 156 | } |
e126ba97 EC |
157 | } |
158 | ||
e126ba97 EC |
159 | kfree(in); |
160 | return err; | |
161 | } | |
162 | ||
163 | static void remove_keys(struct mlx5_ib_dev *dev, int c, int num) | |
164 | { | |
e126ba97 EC |
165 | struct mlx5_mr_cache *cache = &dev->cache; |
166 | struct mlx5_cache_ent *ent = &cache->ent[c]; | |
167 | struct mlx5_ib_mr *mr; | |
e126ba97 EC |
168 | int err; |
169 | int i; | |
170 | ||
171 | for (i = 0; i < num; i++) { | |
746b5583 | 172 | spin_lock_irq(&ent->lock); |
e126ba97 | 173 | if (list_empty(&ent->head)) { |
746b5583 | 174 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
175 | return; |
176 | } | |
177 | mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list); | |
178 | list_del(&mr->list); | |
179 | ent->cur--; | |
180 | ent->size--; | |
746b5583 | 181 | spin_unlock_irq(&ent->lock); |
e126ba97 | 182 | err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr); |
203099fd | 183 | if (err) |
e126ba97 | 184 | mlx5_ib_warn(dev, "failed destroy mkey\n"); |
203099fd | 185 | else |
e126ba97 | 186 | kfree(mr); |
e126ba97 EC |
187 | } |
188 | } | |
189 | ||
190 | static ssize_t size_write(struct file *filp, const char __user *buf, | |
191 | size_t count, loff_t *pos) | |
192 | { | |
193 | struct mlx5_cache_ent *ent = filp->private_data; | |
194 | struct mlx5_ib_dev *dev = ent->dev; | |
195 | char lbuf[20]; | |
196 | u32 var; | |
197 | int err; | |
198 | int c; | |
199 | ||
200 | if (copy_from_user(lbuf, buf, sizeof(lbuf))) | |
5e631a03 | 201 | return -EFAULT; |
e126ba97 EC |
202 | |
203 | c = order2idx(dev, ent->order); | |
204 | lbuf[sizeof(lbuf) - 1] = 0; | |
205 | ||
206 | if (sscanf(lbuf, "%u", &var) != 1) | |
207 | return -EINVAL; | |
208 | ||
209 | if (var < ent->limit) | |
210 | return -EINVAL; | |
211 | ||
212 | if (var > ent->size) { | |
746b5583 EC |
213 | do { |
214 | err = add_keys(dev, c, var - ent->size); | |
215 | if (err && err != -EAGAIN) | |
216 | return err; | |
217 | ||
218 | usleep_range(3000, 5000); | |
219 | } while (err); | |
e126ba97 EC |
220 | } else if (var < ent->size) { |
221 | remove_keys(dev, c, ent->size - var); | |
222 | } | |
223 | ||
224 | return count; | |
225 | } | |
226 | ||
227 | static ssize_t size_read(struct file *filp, char __user *buf, size_t count, | |
228 | loff_t *pos) | |
229 | { | |
230 | struct mlx5_cache_ent *ent = filp->private_data; | |
231 | char lbuf[20]; | |
232 | int err; | |
233 | ||
234 | if (*pos) | |
235 | return 0; | |
236 | ||
237 | err = snprintf(lbuf, sizeof(lbuf), "%d\n", ent->size); | |
238 | if (err < 0) | |
239 | return err; | |
240 | ||
241 | if (copy_to_user(buf, lbuf, err)) | |
5e631a03 | 242 | return -EFAULT; |
e126ba97 EC |
243 | |
244 | *pos += err; | |
245 | ||
246 | return err; | |
247 | } | |
248 | ||
249 | static const struct file_operations size_fops = { | |
250 | .owner = THIS_MODULE, | |
251 | .open = simple_open, | |
252 | .write = size_write, | |
253 | .read = size_read, | |
254 | }; | |
255 | ||
256 | static ssize_t limit_write(struct file *filp, const char __user *buf, | |
257 | size_t count, loff_t *pos) | |
258 | { | |
259 | struct mlx5_cache_ent *ent = filp->private_data; | |
260 | struct mlx5_ib_dev *dev = ent->dev; | |
261 | char lbuf[20]; | |
262 | u32 var; | |
263 | int err; | |
264 | int c; | |
265 | ||
266 | if (copy_from_user(lbuf, buf, sizeof(lbuf))) | |
5e631a03 | 267 | return -EFAULT; |
e126ba97 EC |
268 | |
269 | c = order2idx(dev, ent->order); | |
270 | lbuf[sizeof(lbuf) - 1] = 0; | |
271 | ||
272 | if (sscanf(lbuf, "%u", &var) != 1) | |
273 | return -EINVAL; | |
274 | ||
275 | if (var > ent->size) | |
276 | return -EINVAL; | |
277 | ||
278 | ent->limit = var; | |
279 | ||
280 | if (ent->cur < ent->limit) { | |
281 | err = add_keys(dev, c, 2 * ent->limit - ent->cur); | |
282 | if (err) | |
283 | return err; | |
284 | } | |
285 | ||
286 | return count; | |
287 | } | |
288 | ||
289 | static ssize_t limit_read(struct file *filp, char __user *buf, size_t count, | |
290 | loff_t *pos) | |
291 | { | |
292 | struct mlx5_cache_ent *ent = filp->private_data; | |
293 | char lbuf[20]; | |
294 | int err; | |
295 | ||
296 | if (*pos) | |
297 | return 0; | |
298 | ||
299 | err = snprintf(lbuf, sizeof(lbuf), "%d\n", ent->limit); | |
300 | if (err < 0) | |
301 | return err; | |
302 | ||
303 | if (copy_to_user(buf, lbuf, err)) | |
5e631a03 | 304 | return -EFAULT; |
e126ba97 EC |
305 | |
306 | *pos += err; | |
307 | ||
308 | return err; | |
309 | } | |
310 | ||
311 | static const struct file_operations limit_fops = { | |
312 | .owner = THIS_MODULE, | |
313 | .open = simple_open, | |
314 | .write = limit_write, | |
315 | .read = limit_read, | |
316 | }; | |
317 | ||
318 | static int someone_adding(struct mlx5_mr_cache *cache) | |
319 | { | |
320 | int i; | |
321 | ||
322 | for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) { | |
323 | if (cache->ent[i].cur < cache->ent[i].limit) | |
324 | return 1; | |
325 | } | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
330 | static void __cache_work_func(struct mlx5_cache_ent *ent) | |
331 | { | |
332 | struct mlx5_ib_dev *dev = ent->dev; | |
333 | struct mlx5_mr_cache *cache = &dev->cache; | |
334 | int i = order2idx(dev, ent->order); | |
746b5583 | 335 | int err; |
e126ba97 EC |
336 | |
337 | if (cache->stopped) | |
338 | return; | |
339 | ||
340 | ent = &dev->cache.ent[i]; | |
746b5583 EC |
341 | if (ent->cur < 2 * ent->limit && !dev->fill_delay) { |
342 | err = add_keys(dev, i, 1); | |
343 | if (ent->cur < 2 * ent->limit) { | |
344 | if (err == -EAGAIN) { | |
345 | mlx5_ib_dbg(dev, "returned eagain, order %d\n", | |
346 | i + 2); | |
347 | queue_delayed_work(cache->wq, &ent->dwork, | |
348 | msecs_to_jiffies(3)); | |
349 | } else if (err) { | |
350 | mlx5_ib_warn(dev, "command failed order %d, err %d\n", | |
351 | i + 2, err); | |
352 | queue_delayed_work(cache->wq, &ent->dwork, | |
353 | msecs_to_jiffies(1000)); | |
354 | } else { | |
355 | queue_work(cache->wq, &ent->work); | |
356 | } | |
357 | } | |
e126ba97 EC |
358 | } else if (ent->cur > 2 * ent->limit) { |
359 | if (!someone_adding(cache) && | |
746b5583 | 360 | time_after(jiffies, cache->last_add + 300 * HZ)) { |
e126ba97 EC |
361 | remove_keys(dev, i, 1); |
362 | if (ent->cur > ent->limit) | |
363 | queue_work(cache->wq, &ent->work); | |
364 | } else { | |
746b5583 | 365 | queue_delayed_work(cache->wq, &ent->dwork, 300 * HZ); |
e126ba97 EC |
366 | } |
367 | } | |
368 | } | |
369 | ||
370 | static void delayed_cache_work_func(struct work_struct *work) | |
371 | { | |
372 | struct mlx5_cache_ent *ent; | |
373 | ||
374 | ent = container_of(work, struct mlx5_cache_ent, dwork.work); | |
375 | __cache_work_func(ent); | |
376 | } | |
377 | ||
378 | static void cache_work_func(struct work_struct *work) | |
379 | { | |
380 | struct mlx5_cache_ent *ent; | |
381 | ||
382 | ent = container_of(work, struct mlx5_cache_ent, work); | |
383 | __cache_work_func(ent); | |
384 | } | |
385 | ||
386 | static struct mlx5_ib_mr *alloc_cached_mr(struct mlx5_ib_dev *dev, int order) | |
387 | { | |
388 | struct mlx5_mr_cache *cache = &dev->cache; | |
389 | struct mlx5_ib_mr *mr = NULL; | |
390 | struct mlx5_cache_ent *ent; | |
391 | int c; | |
392 | int i; | |
393 | ||
394 | c = order2idx(dev, order); | |
395 | if (c < 0 || c >= MAX_MR_CACHE_ENTRIES) { | |
396 | mlx5_ib_warn(dev, "order %d, cache index %d\n", order, c); | |
397 | return NULL; | |
398 | } | |
399 | ||
400 | for (i = c; i < MAX_MR_CACHE_ENTRIES; i++) { | |
401 | ent = &cache->ent[i]; | |
402 | ||
403 | mlx5_ib_dbg(dev, "order %d, cache index %d\n", ent->order, i); | |
404 | ||
746b5583 | 405 | spin_lock_irq(&ent->lock); |
e126ba97 EC |
406 | if (!list_empty(&ent->head)) { |
407 | mr = list_first_entry(&ent->head, struct mlx5_ib_mr, | |
408 | list); | |
409 | list_del(&mr->list); | |
410 | ent->cur--; | |
746b5583 | 411 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
412 | if (ent->cur < ent->limit) |
413 | queue_work(cache->wq, &ent->work); | |
414 | break; | |
415 | } | |
746b5583 | 416 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
417 | |
418 | queue_work(cache->wq, &ent->work); | |
419 | ||
420 | if (mr) | |
421 | break; | |
422 | } | |
423 | ||
424 | if (!mr) | |
425 | cache->ent[c].miss++; | |
426 | ||
427 | return mr; | |
428 | } | |
429 | ||
430 | static void free_cached_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr) | |
431 | { | |
432 | struct mlx5_mr_cache *cache = &dev->cache; | |
433 | struct mlx5_cache_ent *ent; | |
434 | int shrink = 0; | |
435 | int c; | |
436 | ||
437 | c = order2idx(dev, mr->order); | |
438 | if (c < 0 || c >= MAX_MR_CACHE_ENTRIES) { | |
439 | mlx5_ib_warn(dev, "order %d, cache index %d\n", mr->order, c); | |
440 | return; | |
441 | } | |
442 | ent = &cache->ent[c]; | |
746b5583 | 443 | spin_lock_irq(&ent->lock); |
e126ba97 EC |
444 | list_add_tail(&mr->list, &ent->head); |
445 | ent->cur++; | |
446 | if (ent->cur > 2 * ent->limit) | |
447 | shrink = 1; | |
746b5583 | 448 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
449 | |
450 | if (shrink) | |
451 | queue_work(cache->wq, &ent->work); | |
452 | } | |
453 | ||
454 | static void clean_keys(struct mlx5_ib_dev *dev, int c) | |
455 | { | |
e126ba97 EC |
456 | struct mlx5_mr_cache *cache = &dev->cache; |
457 | struct mlx5_cache_ent *ent = &cache->ent[c]; | |
458 | struct mlx5_ib_mr *mr; | |
e126ba97 EC |
459 | int err; |
460 | ||
3c461911 | 461 | cancel_delayed_work(&ent->dwork); |
e126ba97 | 462 | while (1) { |
746b5583 | 463 | spin_lock_irq(&ent->lock); |
e126ba97 | 464 | if (list_empty(&ent->head)) { |
746b5583 | 465 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
466 | return; |
467 | } | |
468 | mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list); | |
469 | list_del(&mr->list); | |
470 | ent->cur--; | |
471 | ent->size--; | |
746b5583 | 472 | spin_unlock_irq(&ent->lock); |
e126ba97 | 473 | err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr); |
203099fd | 474 | if (err) |
e126ba97 | 475 | mlx5_ib_warn(dev, "failed destroy mkey\n"); |
203099fd | 476 | else |
e126ba97 | 477 | kfree(mr); |
e126ba97 EC |
478 | } |
479 | } | |
480 | ||
481 | static int mlx5_mr_cache_debugfs_init(struct mlx5_ib_dev *dev) | |
482 | { | |
483 | struct mlx5_mr_cache *cache = &dev->cache; | |
484 | struct mlx5_cache_ent *ent; | |
485 | int i; | |
486 | ||
487 | if (!mlx5_debugfs_root) | |
488 | return 0; | |
489 | ||
490 | cache->root = debugfs_create_dir("mr_cache", dev->mdev.priv.dbg_root); | |
491 | if (!cache->root) | |
492 | return -ENOMEM; | |
493 | ||
494 | for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) { | |
495 | ent = &cache->ent[i]; | |
496 | sprintf(ent->name, "%d", ent->order); | |
497 | ent->dir = debugfs_create_dir(ent->name, cache->root); | |
498 | if (!ent->dir) | |
499 | return -ENOMEM; | |
500 | ||
501 | ent->fsize = debugfs_create_file("size", 0600, ent->dir, ent, | |
502 | &size_fops); | |
503 | if (!ent->fsize) | |
504 | return -ENOMEM; | |
505 | ||
506 | ent->flimit = debugfs_create_file("limit", 0600, ent->dir, ent, | |
507 | &limit_fops); | |
508 | if (!ent->flimit) | |
509 | return -ENOMEM; | |
510 | ||
511 | ent->fcur = debugfs_create_u32("cur", 0400, ent->dir, | |
512 | &ent->cur); | |
513 | if (!ent->fcur) | |
514 | return -ENOMEM; | |
515 | ||
516 | ent->fmiss = debugfs_create_u32("miss", 0600, ent->dir, | |
517 | &ent->miss); | |
518 | if (!ent->fmiss) | |
519 | return -ENOMEM; | |
520 | } | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | static void mlx5_mr_cache_debugfs_cleanup(struct mlx5_ib_dev *dev) | |
526 | { | |
527 | if (!mlx5_debugfs_root) | |
528 | return; | |
529 | ||
530 | debugfs_remove_recursive(dev->cache.root); | |
531 | } | |
532 | ||
746b5583 EC |
533 | static void delay_time_func(unsigned long ctx) |
534 | { | |
535 | struct mlx5_ib_dev *dev = (struct mlx5_ib_dev *)ctx; | |
536 | ||
537 | dev->fill_delay = 0; | |
538 | } | |
539 | ||
e126ba97 EC |
540 | int mlx5_mr_cache_init(struct mlx5_ib_dev *dev) |
541 | { | |
542 | struct mlx5_mr_cache *cache = &dev->cache; | |
543 | struct mlx5_cache_ent *ent; | |
544 | int limit; | |
e126ba97 EC |
545 | int err; |
546 | int i; | |
547 | ||
548 | cache->wq = create_singlethread_workqueue("mkey_cache"); | |
549 | if (!cache->wq) { | |
550 | mlx5_ib_warn(dev, "failed to create work queue\n"); | |
551 | return -ENOMEM; | |
552 | } | |
553 | ||
746b5583 | 554 | setup_timer(&dev->delay_timer, delay_time_func, (unsigned long)dev); |
e126ba97 EC |
555 | for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) { |
556 | INIT_LIST_HEAD(&cache->ent[i].head); | |
557 | spin_lock_init(&cache->ent[i].lock); | |
558 | ||
559 | ent = &cache->ent[i]; | |
560 | INIT_LIST_HEAD(&ent->head); | |
561 | spin_lock_init(&ent->lock); | |
562 | ent->order = i + 2; | |
563 | ent->dev = dev; | |
564 | ||
2d036fad | 565 | if (dev->mdev.profile->mask & MLX5_PROF_MASK_MR_CACHE) |
e126ba97 | 566 | limit = dev->mdev.profile->mr_cache[i].limit; |
2d036fad | 567 | else |
e126ba97 | 568 | limit = 0; |
2d036fad | 569 | |
e126ba97 EC |
570 | INIT_WORK(&ent->work, cache_work_func); |
571 | INIT_DELAYED_WORK(&ent->dwork, delayed_cache_work_func); | |
572 | ent->limit = limit; | |
573 | queue_work(cache->wq, &ent->work); | |
574 | } | |
575 | ||
576 | err = mlx5_mr_cache_debugfs_init(dev); | |
577 | if (err) | |
578 | mlx5_ib_warn(dev, "cache debugfs failure\n"); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev) | |
584 | { | |
585 | int i; | |
586 | ||
587 | dev->cache.stopped = 1; | |
3c461911 | 588 | flush_workqueue(dev->cache.wq); |
e126ba97 EC |
589 | |
590 | mlx5_mr_cache_debugfs_cleanup(dev); | |
591 | ||
592 | for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) | |
593 | clean_keys(dev, i); | |
594 | ||
3c461911 | 595 | destroy_workqueue(dev->cache.wq); |
746b5583 | 596 | del_timer_sync(&dev->delay_timer); |
3c461911 | 597 | |
e126ba97 EC |
598 | return 0; |
599 | } | |
600 | ||
601 | struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc) | |
602 | { | |
603 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
604 | struct mlx5_core_dev *mdev = &dev->mdev; | |
605 | struct mlx5_create_mkey_mbox_in *in; | |
606 | struct mlx5_mkey_seg *seg; | |
607 | struct mlx5_ib_mr *mr; | |
608 | int err; | |
609 | ||
610 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
611 | if (!mr) | |
612 | return ERR_PTR(-ENOMEM); | |
613 | ||
614 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
615 | if (!in) { | |
616 | err = -ENOMEM; | |
617 | goto err_free; | |
618 | } | |
619 | ||
620 | seg = &in->seg; | |
621 | seg->flags = convert_access(acc) | MLX5_ACCESS_MODE_PA; | |
622 | seg->flags_pd = cpu_to_be32(to_mpd(pd)->pdn | MLX5_MKEY_LEN64); | |
623 | seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
624 | seg->start_addr = 0; | |
625 | ||
746b5583 EC |
626 | err = mlx5_core_create_mkey(mdev, &mr->mmr, in, sizeof(*in), NULL, NULL, |
627 | NULL); | |
e126ba97 EC |
628 | if (err) |
629 | goto err_in; | |
630 | ||
631 | kfree(in); | |
632 | mr->ibmr.lkey = mr->mmr.key; | |
633 | mr->ibmr.rkey = mr->mmr.key; | |
634 | mr->umem = NULL; | |
635 | ||
636 | return &mr->ibmr; | |
637 | ||
638 | err_in: | |
639 | kfree(in); | |
640 | ||
641 | err_free: | |
642 | kfree(mr); | |
643 | ||
644 | return ERR_PTR(err); | |
645 | } | |
646 | ||
647 | static int get_octo_len(u64 addr, u64 len, int page_size) | |
648 | { | |
649 | u64 offset; | |
650 | int npages; | |
651 | ||
652 | offset = addr & (page_size - 1); | |
653 | npages = ALIGN(len + offset, page_size) >> ilog2(page_size); | |
654 | return (npages + 1) / 2; | |
655 | } | |
656 | ||
657 | static int use_umr(int order) | |
658 | { | |
659 | return order <= 17; | |
660 | } | |
661 | ||
662 | static void prep_umr_reg_wqe(struct ib_pd *pd, struct ib_send_wr *wr, | |
663 | struct ib_sge *sg, u64 dma, int n, u32 key, | |
664 | int page_shift, u64 virt_addr, u64 len, | |
665 | int access_flags) | |
666 | { | |
667 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
668 | struct ib_mr *mr = dev->umrc.mr; | |
669 | ||
670 | sg->addr = dma; | |
671 | sg->length = ALIGN(sizeof(u64) * n, 64); | |
672 | sg->lkey = mr->lkey; | |
673 | ||
674 | wr->next = NULL; | |
675 | wr->send_flags = 0; | |
676 | wr->sg_list = sg; | |
677 | if (n) | |
678 | wr->num_sge = 1; | |
679 | else | |
680 | wr->num_sge = 0; | |
681 | ||
682 | wr->opcode = MLX5_IB_WR_UMR; | |
683 | wr->wr.fast_reg.page_list_len = n; | |
684 | wr->wr.fast_reg.page_shift = page_shift; | |
685 | wr->wr.fast_reg.rkey = key; | |
686 | wr->wr.fast_reg.iova_start = virt_addr; | |
687 | wr->wr.fast_reg.length = len; | |
688 | wr->wr.fast_reg.access_flags = access_flags; | |
689 | wr->wr.fast_reg.page_list = (struct ib_fast_reg_page_list *)pd; | |
690 | } | |
691 | ||
692 | static void prep_umr_unreg_wqe(struct mlx5_ib_dev *dev, | |
693 | struct ib_send_wr *wr, u32 key) | |
694 | { | |
695 | wr->send_flags = MLX5_IB_SEND_UMR_UNREG; | |
696 | wr->opcode = MLX5_IB_WR_UMR; | |
697 | wr->wr.fast_reg.rkey = key; | |
698 | } | |
699 | ||
700 | void mlx5_umr_cq_handler(struct ib_cq *cq, void *cq_context) | |
701 | { | |
702 | struct mlx5_ib_mr *mr; | |
703 | struct ib_wc wc; | |
704 | int err; | |
705 | ||
706 | while (1) { | |
707 | err = ib_poll_cq(cq, 1, &wc); | |
708 | if (err < 0) { | |
709 | pr_warn("poll cq error %d\n", err); | |
710 | return; | |
711 | } | |
712 | if (err == 0) | |
713 | break; | |
714 | ||
715 | mr = (struct mlx5_ib_mr *)(unsigned long)wc.wr_id; | |
716 | mr->status = wc.status; | |
717 | complete(&mr->done); | |
718 | } | |
719 | ib_req_notify_cq(cq, IB_CQ_NEXT_COMP); | |
720 | } | |
721 | ||
722 | static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem, | |
723 | u64 virt_addr, u64 len, int npages, | |
724 | int page_shift, int order, int access_flags) | |
725 | { | |
726 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
203099fd | 727 | struct device *ddev = dev->ib_dev.dma_device; |
e126ba97 EC |
728 | struct umr_common *umrc = &dev->umrc; |
729 | struct ib_send_wr wr, *bad; | |
730 | struct mlx5_ib_mr *mr; | |
731 | struct ib_sge sg; | |
203099fd | 732 | int size = sizeof(u64) * npages; |
e126ba97 EC |
733 | int err; |
734 | int i; | |
735 | ||
746b5583 | 736 | for (i = 0; i < 1; i++) { |
e126ba97 EC |
737 | mr = alloc_cached_mr(dev, order); |
738 | if (mr) | |
739 | break; | |
740 | ||
741 | err = add_keys(dev, order2idx(dev, order), 1); | |
746b5583 EC |
742 | if (err && err != -EAGAIN) { |
743 | mlx5_ib_warn(dev, "add_keys failed, err %d\n", err); | |
e126ba97 EC |
744 | break; |
745 | } | |
746 | } | |
747 | ||
748 | if (!mr) | |
749 | return ERR_PTR(-EAGAIN); | |
750 | ||
fe45f827 | 751 | mr->pas = kmalloc(size + MLX5_UMR_ALIGN - 1, GFP_KERNEL); |
203099fd EC |
752 | if (!mr->pas) { |
753 | err = -ENOMEM; | |
754 | goto error; | |
755 | } | |
54313907 EC |
756 | |
757 | mlx5_ib_populate_pas(dev, umem, page_shift, | |
758 | mr_align(mr->pas, MLX5_UMR_ALIGN), 1); | |
759 | ||
fe45f827 | 760 | mr->dma = dma_map_single(ddev, mr_align(mr->pas, MLX5_UMR_ALIGN), size, |
203099fd EC |
761 | DMA_TO_DEVICE); |
762 | if (dma_mapping_error(ddev, mr->dma)) { | |
763 | kfree(mr->pas); | |
764 | err = -ENOMEM; | |
765 | goto error; | |
766 | } | |
767 | ||
e126ba97 EC |
768 | memset(&wr, 0, sizeof(wr)); |
769 | wr.wr_id = (u64)(unsigned long)mr; | |
770 | prep_umr_reg_wqe(pd, &wr, &sg, mr->dma, npages, mr->mmr.key, page_shift, virt_addr, len, access_flags); | |
771 | ||
772 | /* We serialize polls so one process does not kidnap another's | |
773 | * completion. This is not a problem since wr is completed in | |
774 | * around 1 usec | |
775 | */ | |
776 | down(&umrc->sem); | |
777 | init_completion(&mr->done); | |
778 | err = ib_post_send(umrc->qp, &wr, &bad); | |
779 | if (err) { | |
780 | mlx5_ib_warn(dev, "post send failed, err %d\n", err); | |
781 | up(&umrc->sem); | |
782 | goto error; | |
783 | } | |
784 | wait_for_completion(&mr->done); | |
785 | up(&umrc->sem); | |
786 | ||
203099fd EC |
787 | dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE); |
788 | kfree(mr->pas); | |
789 | ||
e126ba97 EC |
790 | if (mr->status != IB_WC_SUCCESS) { |
791 | mlx5_ib_warn(dev, "reg umr failed\n"); | |
792 | err = -EFAULT; | |
793 | goto error; | |
794 | } | |
795 | ||
796 | return mr; | |
797 | ||
798 | error: | |
799 | free_cached_mr(dev, mr); | |
800 | return ERR_PTR(err); | |
801 | } | |
802 | ||
803 | static struct mlx5_ib_mr *reg_create(struct ib_pd *pd, u64 virt_addr, | |
804 | u64 length, struct ib_umem *umem, | |
805 | int npages, int page_shift, | |
806 | int access_flags) | |
807 | { | |
808 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
809 | struct mlx5_create_mkey_mbox_in *in; | |
810 | struct mlx5_ib_mr *mr; | |
811 | int inlen; | |
812 | int err; | |
813 | ||
814 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
815 | if (!mr) | |
816 | return ERR_PTR(-ENOMEM); | |
817 | ||
818 | inlen = sizeof(*in) + sizeof(*in->pas) * ((npages + 1) / 2) * 2; | |
819 | in = mlx5_vzalloc(inlen); | |
820 | if (!in) { | |
821 | err = -ENOMEM; | |
822 | goto err_1; | |
823 | } | |
824 | mlx5_ib_populate_pas(dev, umem, page_shift, in->pas, 0); | |
825 | ||
826 | in->seg.flags = convert_access(access_flags) | | |
827 | MLX5_ACCESS_MODE_MTT; | |
828 | in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn); | |
829 | in->seg.start_addr = cpu_to_be64(virt_addr); | |
830 | in->seg.len = cpu_to_be64(length); | |
831 | in->seg.bsfs_octo_size = 0; | |
832 | in->seg.xlt_oct_size = cpu_to_be32(get_octo_len(virt_addr, length, 1 << page_shift)); | |
833 | in->seg.log2_page_size = page_shift; | |
834 | in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
746b5583 EC |
835 | in->xlat_oct_act_size = cpu_to_be32(get_octo_len(virt_addr, length, |
836 | 1 << page_shift)); | |
837 | err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, inlen, NULL, | |
838 | NULL, NULL); | |
e126ba97 EC |
839 | if (err) { |
840 | mlx5_ib_warn(dev, "create mkey failed\n"); | |
841 | goto err_2; | |
842 | } | |
843 | mr->umem = umem; | |
844 | mlx5_vfree(in); | |
845 | ||
846 | mlx5_ib_dbg(dev, "mkey = 0x%x\n", mr->mmr.key); | |
847 | ||
848 | return mr; | |
849 | ||
850 | err_2: | |
851 | mlx5_vfree(in); | |
852 | ||
853 | err_1: | |
854 | kfree(mr); | |
855 | ||
856 | return ERR_PTR(err); | |
857 | } | |
858 | ||
859 | struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, | |
860 | u64 virt_addr, int access_flags, | |
861 | struct ib_udata *udata) | |
862 | { | |
863 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
864 | struct mlx5_ib_mr *mr = NULL; | |
865 | struct ib_umem *umem; | |
866 | int page_shift; | |
867 | int npages; | |
868 | int ncont; | |
869 | int order; | |
870 | int err; | |
871 | ||
872 | mlx5_ib_dbg(dev, "start 0x%llx, virt_addr 0x%llx, length 0x%llx\n", | |
873 | start, virt_addr, length); | |
874 | umem = ib_umem_get(pd->uobject->context, start, length, access_flags, | |
875 | 0); | |
876 | if (IS_ERR(umem)) { | |
877 | mlx5_ib_dbg(dev, "umem get failed\n"); | |
878 | return (void *)umem; | |
879 | } | |
880 | ||
881 | mlx5_ib_cont_pages(umem, start, &npages, &page_shift, &ncont, &order); | |
882 | if (!npages) { | |
883 | mlx5_ib_warn(dev, "avoid zero region\n"); | |
884 | err = -EINVAL; | |
885 | goto error; | |
886 | } | |
887 | ||
888 | mlx5_ib_dbg(dev, "npages %d, ncont %d, order %d, page_shift %d\n", | |
889 | npages, ncont, order, page_shift); | |
890 | ||
891 | if (use_umr(order)) { | |
892 | mr = reg_umr(pd, umem, virt_addr, length, ncont, page_shift, | |
893 | order, access_flags); | |
894 | if (PTR_ERR(mr) == -EAGAIN) { | |
895 | mlx5_ib_dbg(dev, "cache empty for order %d", order); | |
896 | mr = NULL; | |
897 | } | |
898 | } | |
899 | ||
900 | if (!mr) | |
901 | mr = reg_create(pd, virt_addr, length, umem, ncont, page_shift, | |
902 | access_flags); | |
903 | ||
904 | if (IS_ERR(mr)) { | |
905 | err = PTR_ERR(mr); | |
906 | goto error; | |
907 | } | |
908 | ||
909 | mlx5_ib_dbg(dev, "mkey 0x%x\n", mr->mmr.key); | |
910 | ||
911 | mr->umem = umem; | |
912 | mr->npages = npages; | |
913 | spin_lock(&dev->mr_lock); | |
914 | dev->mdev.priv.reg_pages += npages; | |
915 | spin_unlock(&dev->mr_lock); | |
916 | mr->ibmr.lkey = mr->mmr.key; | |
917 | mr->ibmr.rkey = mr->mmr.key; | |
918 | ||
919 | return &mr->ibmr; | |
920 | ||
921 | error: | |
922 | ib_umem_release(umem); | |
923 | return ERR_PTR(err); | |
924 | } | |
925 | ||
926 | static int unreg_umr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr) | |
927 | { | |
928 | struct umr_common *umrc = &dev->umrc; | |
929 | struct ib_send_wr wr, *bad; | |
930 | int err; | |
931 | ||
932 | memset(&wr, 0, sizeof(wr)); | |
933 | wr.wr_id = (u64)(unsigned long)mr; | |
934 | prep_umr_unreg_wqe(dev, &wr, mr->mmr.key); | |
935 | ||
936 | down(&umrc->sem); | |
937 | init_completion(&mr->done); | |
938 | err = ib_post_send(umrc->qp, &wr, &bad); | |
939 | if (err) { | |
940 | up(&umrc->sem); | |
941 | mlx5_ib_dbg(dev, "err %d\n", err); | |
942 | goto error; | |
943 | } | |
944 | wait_for_completion(&mr->done); | |
945 | up(&umrc->sem); | |
946 | if (mr->status != IB_WC_SUCCESS) { | |
947 | mlx5_ib_warn(dev, "unreg umr failed\n"); | |
948 | err = -EFAULT; | |
949 | goto error; | |
950 | } | |
951 | return 0; | |
952 | ||
953 | error: | |
954 | return err; | |
955 | } | |
956 | ||
957 | int mlx5_ib_dereg_mr(struct ib_mr *ibmr) | |
958 | { | |
959 | struct mlx5_ib_dev *dev = to_mdev(ibmr->device); | |
960 | struct mlx5_ib_mr *mr = to_mmr(ibmr); | |
961 | struct ib_umem *umem = mr->umem; | |
962 | int npages = mr->npages; | |
963 | int umred = mr->umred; | |
964 | int err; | |
965 | ||
966 | if (!umred) { | |
967 | err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr); | |
968 | if (err) { | |
969 | mlx5_ib_warn(dev, "failed to destroy mkey 0x%x (%d)\n", | |
970 | mr->mmr.key, err); | |
971 | return err; | |
972 | } | |
973 | } else { | |
974 | err = unreg_umr(dev, mr); | |
975 | if (err) { | |
976 | mlx5_ib_warn(dev, "failed unregister\n"); | |
977 | return err; | |
978 | } | |
979 | free_cached_mr(dev, mr); | |
980 | } | |
981 | ||
982 | if (umem) { | |
983 | ib_umem_release(umem); | |
984 | spin_lock(&dev->mr_lock); | |
985 | dev->mdev.priv.reg_pages -= npages; | |
986 | spin_unlock(&dev->mr_lock); | |
987 | } | |
988 | ||
989 | if (!umred) | |
990 | kfree(mr); | |
991 | ||
992 | return 0; | |
993 | } | |
994 | ||
3121e3c4 SG |
995 | struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd, |
996 | struct ib_mr_init_attr *mr_init_attr) | |
997 | { | |
998 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
999 | struct mlx5_create_mkey_mbox_in *in; | |
1000 | struct mlx5_ib_mr *mr; | |
1001 | int access_mode, err; | |
1002 | int ndescs = roundup(mr_init_attr->max_reg_descriptors, 4); | |
1003 | ||
1004 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
1005 | if (!mr) | |
1006 | return ERR_PTR(-ENOMEM); | |
1007 | ||
1008 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
1009 | if (!in) { | |
1010 | err = -ENOMEM; | |
1011 | goto err_free; | |
1012 | } | |
1013 | ||
1014 | in->seg.status = 1 << 6; /* free */ | |
1015 | in->seg.xlt_oct_size = cpu_to_be32(ndescs); | |
1016 | in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
1017 | in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn); | |
1018 | access_mode = MLX5_ACCESS_MODE_MTT; | |
1019 | ||
1020 | if (mr_init_attr->flags & IB_MR_SIGNATURE_EN) { | |
1021 | u32 psv_index[2]; | |
1022 | ||
1023 | in->seg.flags_pd = cpu_to_be32(be32_to_cpu(in->seg.flags_pd) | | |
1024 | MLX5_MKEY_BSF_EN); | |
1025 | in->seg.bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE); | |
1026 | mr->sig = kzalloc(sizeof(*mr->sig), GFP_KERNEL); | |
1027 | if (!mr->sig) { | |
1028 | err = -ENOMEM; | |
1029 | goto err_free_in; | |
1030 | } | |
1031 | ||
1032 | /* create mem & wire PSVs */ | |
1033 | err = mlx5_core_create_psv(&dev->mdev, to_mpd(pd)->pdn, | |
1034 | 2, psv_index); | |
1035 | if (err) | |
1036 | goto err_free_sig; | |
1037 | ||
1038 | access_mode = MLX5_ACCESS_MODE_KLM; | |
1039 | mr->sig->psv_memory.psv_idx = psv_index[0]; | |
1040 | mr->sig->psv_wire.psv_idx = psv_index[1]; | |
1041 | } | |
1042 | ||
1043 | in->seg.flags = MLX5_PERM_UMR_EN | access_mode; | |
1044 | err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, sizeof(*in), | |
1045 | NULL, NULL, NULL); | |
1046 | if (err) | |
1047 | goto err_destroy_psv; | |
1048 | ||
1049 | mr->ibmr.lkey = mr->mmr.key; | |
1050 | mr->ibmr.rkey = mr->mmr.key; | |
1051 | mr->umem = NULL; | |
1052 | kfree(in); | |
1053 | ||
1054 | return &mr->ibmr; | |
1055 | ||
1056 | err_destroy_psv: | |
1057 | if (mr->sig) { | |
1058 | if (mlx5_core_destroy_psv(&dev->mdev, | |
1059 | mr->sig->psv_memory.psv_idx)) | |
1060 | mlx5_ib_warn(dev, "failed to destroy mem psv %d\n", | |
1061 | mr->sig->psv_memory.psv_idx); | |
1062 | if (mlx5_core_destroy_psv(&dev->mdev, | |
1063 | mr->sig->psv_wire.psv_idx)) | |
1064 | mlx5_ib_warn(dev, "failed to destroy wire psv %d\n", | |
1065 | mr->sig->psv_wire.psv_idx); | |
1066 | } | |
1067 | err_free_sig: | |
1068 | kfree(mr->sig); | |
1069 | err_free_in: | |
1070 | kfree(in); | |
1071 | err_free: | |
1072 | kfree(mr); | |
1073 | return ERR_PTR(err); | |
1074 | } | |
1075 | ||
1076 | int mlx5_ib_destroy_mr(struct ib_mr *ibmr) | |
1077 | { | |
1078 | struct mlx5_ib_dev *dev = to_mdev(ibmr->device); | |
1079 | struct mlx5_ib_mr *mr = to_mmr(ibmr); | |
1080 | int err; | |
1081 | ||
1082 | if (mr->sig) { | |
1083 | if (mlx5_core_destroy_psv(&dev->mdev, | |
1084 | mr->sig->psv_memory.psv_idx)) | |
1085 | mlx5_ib_warn(dev, "failed to destroy mem psv %d\n", | |
1086 | mr->sig->psv_memory.psv_idx); | |
1087 | if (mlx5_core_destroy_psv(&dev->mdev, | |
1088 | mr->sig->psv_wire.psv_idx)) | |
1089 | mlx5_ib_warn(dev, "failed to destroy wire psv %d\n", | |
1090 | mr->sig->psv_wire.psv_idx); | |
1091 | kfree(mr->sig); | |
1092 | } | |
1093 | ||
1094 | err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr); | |
1095 | if (err) { | |
1096 | mlx5_ib_warn(dev, "failed to destroy mkey 0x%x (%d)\n", | |
1097 | mr->mmr.key, err); | |
1098 | return err; | |
1099 | } | |
1100 | ||
1101 | kfree(mr); | |
1102 | ||
1103 | return err; | |
1104 | } | |
1105 | ||
e126ba97 EC |
1106 | struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd, |
1107 | int max_page_list_len) | |
1108 | { | |
1109 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
1110 | struct mlx5_create_mkey_mbox_in *in; | |
1111 | struct mlx5_ib_mr *mr; | |
1112 | int err; | |
1113 | ||
1114 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
1115 | if (!mr) | |
1116 | return ERR_PTR(-ENOMEM); | |
1117 | ||
1118 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
1119 | if (!in) { | |
1120 | err = -ENOMEM; | |
1121 | goto err_free; | |
1122 | } | |
1123 | ||
1124 | in->seg.status = 1 << 6; /* free */ | |
1125 | in->seg.xlt_oct_size = cpu_to_be32((max_page_list_len + 1) / 2); | |
1126 | in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
1127 | in->seg.flags = MLX5_PERM_UMR_EN | MLX5_ACCESS_MODE_MTT; | |
1128 | in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn); | |
1129 | /* | |
1130 | * TBD not needed - issue 197292 */ | |
1131 | in->seg.log2_page_size = PAGE_SHIFT; | |
1132 | ||
746b5583 EC |
1133 | err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, sizeof(*in), NULL, |
1134 | NULL, NULL); | |
e126ba97 EC |
1135 | kfree(in); |
1136 | if (err) | |
1137 | goto err_free; | |
1138 | ||
1139 | mr->ibmr.lkey = mr->mmr.key; | |
1140 | mr->ibmr.rkey = mr->mmr.key; | |
1141 | mr->umem = NULL; | |
1142 | ||
1143 | return &mr->ibmr; | |
1144 | ||
1145 | err_free: | |
1146 | kfree(mr); | |
1147 | return ERR_PTR(err); | |
1148 | } | |
1149 | ||
1150 | struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev, | |
1151 | int page_list_len) | |
1152 | { | |
1153 | struct mlx5_ib_fast_reg_page_list *mfrpl; | |
1154 | int size = page_list_len * sizeof(u64); | |
1155 | ||
1156 | mfrpl = kmalloc(sizeof(*mfrpl), GFP_KERNEL); | |
1157 | if (!mfrpl) | |
1158 | return ERR_PTR(-ENOMEM); | |
1159 | ||
1160 | mfrpl->ibfrpl.page_list = kmalloc(size, GFP_KERNEL); | |
1161 | if (!mfrpl->ibfrpl.page_list) | |
1162 | goto err_free; | |
1163 | ||
1164 | mfrpl->mapped_page_list = dma_alloc_coherent(ibdev->dma_device, | |
1165 | size, &mfrpl->map, | |
1166 | GFP_KERNEL); | |
1167 | if (!mfrpl->mapped_page_list) | |
1168 | goto err_free; | |
1169 | ||
1170 | WARN_ON(mfrpl->map & 0x3f); | |
1171 | ||
1172 | return &mfrpl->ibfrpl; | |
1173 | ||
1174 | err_free: | |
1175 | kfree(mfrpl->ibfrpl.page_list); | |
1176 | kfree(mfrpl); | |
1177 | return ERR_PTR(-ENOMEM); | |
1178 | } | |
1179 | ||
1180 | void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
1181 | { | |
1182 | struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list); | |
1183 | struct mlx5_ib_dev *dev = to_mdev(page_list->device); | |
1184 | int size = page_list->max_page_list_len * sizeof(u64); | |
1185 | ||
1186 | dma_free_coherent(&dev->mdev.pdev->dev, size, mfrpl->mapped_page_list, | |
1187 | mfrpl->map); | |
1188 | kfree(mfrpl->ibfrpl.page_list); | |
1189 | kfree(mfrpl); | |
1190 | } |