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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 | 75 | unsigned long flags; |
9603b61d | 76 | struct mlx5_mr_table *table = &dev->mdev->priv.mr_table; |
8605933a | 77 | int err; |
746b5583 | 78 | |
746b5583 EC |
79 | spin_lock_irqsave(&ent->lock, flags); |
80 | ent->pending--; | |
81 | spin_unlock_irqrestore(&ent->lock, flags); | |
82 | if (status) { | |
83 | mlx5_ib_warn(dev, "async reg mr failed. status %d\n", status); | |
84 | kfree(mr); | |
85 | dev->fill_delay = 1; | |
86 | mod_timer(&dev->delay_timer, jiffies + HZ); | |
87 | return; | |
88 | } | |
89 | ||
90 | if (mr->out.hdr.status) { | |
91 | mlx5_ib_warn(dev, "failed - status %d, syndorme 0x%x\n", | |
92 | mr->out.hdr.status, | |
93 | be32_to_cpu(mr->out.hdr.syndrome)); | |
94 | kfree(mr); | |
95 | dev->fill_delay = 1; | |
96 | mod_timer(&dev->delay_timer, jiffies + HZ); | |
97 | return; | |
98 | } | |
99 | ||
9603b61d JM |
100 | spin_lock_irqsave(&dev->mdev->priv.mkey_lock, flags); |
101 | key = dev->mdev->priv.mkey_key++; | |
102 | spin_unlock_irqrestore(&dev->mdev->priv.mkey_lock, flags); | |
746b5583 EC |
103 | mr->mmr.key = mlx5_idx_to_mkey(be32_to_cpu(mr->out.mkey) & 0xffffff) | key; |
104 | ||
105 | cache->last_add = jiffies; | |
106 | ||
107 | spin_lock_irqsave(&ent->lock, flags); | |
108 | list_add_tail(&mr->list, &ent->head); | |
109 | ent->cur++; | |
110 | ent->size++; | |
111 | spin_unlock_irqrestore(&ent->lock, flags); | |
8605933a HE |
112 | |
113 | write_lock_irqsave(&table->lock, flags); | |
114 | err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->mmr.key), | |
115 | &mr->mmr); | |
116 | if (err) | |
117 | pr_err("Error inserting to mr tree. 0x%x\n", -err); | |
118 | write_unlock_irqrestore(&table->lock, flags); | |
746b5583 EC |
119 | } |
120 | ||
e126ba97 EC |
121 | static int add_keys(struct mlx5_ib_dev *dev, int c, int num) |
122 | { | |
e126ba97 EC |
123 | struct mlx5_mr_cache *cache = &dev->cache; |
124 | struct mlx5_cache_ent *ent = &cache->ent[c]; | |
125 | struct mlx5_create_mkey_mbox_in *in; | |
126 | struct mlx5_ib_mr *mr; | |
127 | int npages = 1 << ent->order; | |
e126ba97 EC |
128 | int err = 0; |
129 | int i; | |
130 | ||
131 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
132 | if (!in) | |
133 | return -ENOMEM; | |
134 | ||
135 | for (i = 0; i < num; i++) { | |
746b5583 EC |
136 | if (ent->pending >= MAX_PENDING_REG_MR) { |
137 | err = -EAGAIN; | |
138 | break; | |
139 | } | |
140 | ||
e126ba97 EC |
141 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); |
142 | if (!mr) { | |
143 | err = -ENOMEM; | |
746b5583 | 144 | break; |
e126ba97 EC |
145 | } |
146 | mr->order = ent->order; | |
147 | mr->umred = 1; | |
746b5583 | 148 | mr->dev = dev; |
e126ba97 EC |
149 | in->seg.status = 1 << 6; |
150 | in->seg.xlt_oct_size = cpu_to_be32((npages + 1) / 2); | |
151 | in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
152 | in->seg.flags = MLX5_ACCESS_MODE_MTT | MLX5_PERM_UMR_EN; | |
153 | in->seg.log2_page_size = 12; | |
154 | ||
746b5583 EC |
155 | spin_lock_irq(&ent->lock); |
156 | ent->pending++; | |
157 | spin_unlock_irq(&ent->lock); | |
9603b61d | 158 | err = mlx5_core_create_mkey(dev->mdev, &mr->mmr, in, |
746b5583 EC |
159 | sizeof(*in), reg_mr_callback, |
160 | mr, &mr->out); | |
e126ba97 EC |
161 | if (err) { |
162 | mlx5_ib_warn(dev, "create mkey failed %d\n", err); | |
e126ba97 | 163 | kfree(mr); |
746b5583 | 164 | break; |
e126ba97 | 165 | } |
e126ba97 EC |
166 | } |
167 | ||
e126ba97 EC |
168 | kfree(in); |
169 | return err; | |
170 | } | |
171 | ||
172 | static void remove_keys(struct mlx5_ib_dev *dev, int c, int num) | |
173 | { | |
e126ba97 EC |
174 | struct mlx5_mr_cache *cache = &dev->cache; |
175 | struct mlx5_cache_ent *ent = &cache->ent[c]; | |
176 | struct mlx5_ib_mr *mr; | |
e126ba97 EC |
177 | int err; |
178 | int i; | |
179 | ||
180 | for (i = 0; i < num; i++) { | |
746b5583 | 181 | spin_lock_irq(&ent->lock); |
e126ba97 | 182 | if (list_empty(&ent->head)) { |
746b5583 | 183 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
184 | return; |
185 | } | |
186 | mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list); | |
187 | list_del(&mr->list); | |
188 | ent->cur--; | |
189 | ent->size--; | |
746b5583 | 190 | spin_unlock_irq(&ent->lock); |
9603b61d | 191 | err = mlx5_core_destroy_mkey(dev->mdev, &mr->mmr); |
203099fd | 192 | if (err) |
e126ba97 | 193 | mlx5_ib_warn(dev, "failed destroy mkey\n"); |
203099fd | 194 | else |
e126ba97 | 195 | kfree(mr); |
e126ba97 EC |
196 | } |
197 | } | |
198 | ||
199 | static ssize_t size_write(struct file *filp, const char __user *buf, | |
200 | size_t count, loff_t *pos) | |
201 | { | |
202 | struct mlx5_cache_ent *ent = filp->private_data; | |
203 | struct mlx5_ib_dev *dev = ent->dev; | |
204 | char lbuf[20]; | |
205 | u32 var; | |
206 | int err; | |
207 | int c; | |
208 | ||
209 | if (copy_from_user(lbuf, buf, sizeof(lbuf))) | |
5e631a03 | 210 | return -EFAULT; |
e126ba97 EC |
211 | |
212 | c = order2idx(dev, ent->order); | |
213 | lbuf[sizeof(lbuf) - 1] = 0; | |
214 | ||
215 | if (sscanf(lbuf, "%u", &var) != 1) | |
216 | return -EINVAL; | |
217 | ||
218 | if (var < ent->limit) | |
219 | return -EINVAL; | |
220 | ||
221 | if (var > ent->size) { | |
746b5583 EC |
222 | do { |
223 | err = add_keys(dev, c, var - ent->size); | |
224 | if (err && err != -EAGAIN) | |
225 | return err; | |
226 | ||
227 | usleep_range(3000, 5000); | |
228 | } while (err); | |
e126ba97 EC |
229 | } else if (var < ent->size) { |
230 | remove_keys(dev, c, ent->size - var); | |
231 | } | |
232 | ||
233 | return count; | |
234 | } | |
235 | ||
236 | static ssize_t size_read(struct file *filp, char __user *buf, size_t count, | |
237 | loff_t *pos) | |
238 | { | |
239 | struct mlx5_cache_ent *ent = filp->private_data; | |
240 | char lbuf[20]; | |
241 | int err; | |
242 | ||
243 | if (*pos) | |
244 | return 0; | |
245 | ||
246 | err = snprintf(lbuf, sizeof(lbuf), "%d\n", ent->size); | |
247 | if (err < 0) | |
248 | return err; | |
249 | ||
250 | if (copy_to_user(buf, lbuf, err)) | |
5e631a03 | 251 | return -EFAULT; |
e126ba97 EC |
252 | |
253 | *pos += err; | |
254 | ||
255 | return err; | |
256 | } | |
257 | ||
258 | static const struct file_operations size_fops = { | |
259 | .owner = THIS_MODULE, | |
260 | .open = simple_open, | |
261 | .write = size_write, | |
262 | .read = size_read, | |
263 | }; | |
264 | ||
265 | static ssize_t limit_write(struct file *filp, const char __user *buf, | |
266 | size_t count, loff_t *pos) | |
267 | { | |
268 | struct mlx5_cache_ent *ent = filp->private_data; | |
269 | struct mlx5_ib_dev *dev = ent->dev; | |
270 | char lbuf[20]; | |
271 | u32 var; | |
272 | int err; | |
273 | int c; | |
274 | ||
275 | if (copy_from_user(lbuf, buf, sizeof(lbuf))) | |
5e631a03 | 276 | return -EFAULT; |
e126ba97 EC |
277 | |
278 | c = order2idx(dev, ent->order); | |
279 | lbuf[sizeof(lbuf) - 1] = 0; | |
280 | ||
281 | if (sscanf(lbuf, "%u", &var) != 1) | |
282 | return -EINVAL; | |
283 | ||
284 | if (var > ent->size) | |
285 | return -EINVAL; | |
286 | ||
287 | ent->limit = var; | |
288 | ||
289 | if (ent->cur < ent->limit) { | |
290 | err = add_keys(dev, c, 2 * ent->limit - ent->cur); | |
291 | if (err) | |
292 | return err; | |
293 | } | |
294 | ||
295 | return count; | |
296 | } | |
297 | ||
298 | static ssize_t limit_read(struct file *filp, char __user *buf, size_t count, | |
299 | loff_t *pos) | |
300 | { | |
301 | struct mlx5_cache_ent *ent = filp->private_data; | |
302 | char lbuf[20]; | |
303 | int err; | |
304 | ||
305 | if (*pos) | |
306 | return 0; | |
307 | ||
308 | err = snprintf(lbuf, sizeof(lbuf), "%d\n", ent->limit); | |
309 | if (err < 0) | |
310 | return err; | |
311 | ||
312 | if (copy_to_user(buf, lbuf, err)) | |
5e631a03 | 313 | return -EFAULT; |
e126ba97 EC |
314 | |
315 | *pos += err; | |
316 | ||
317 | return err; | |
318 | } | |
319 | ||
320 | static const struct file_operations limit_fops = { | |
321 | .owner = THIS_MODULE, | |
322 | .open = simple_open, | |
323 | .write = limit_write, | |
324 | .read = limit_read, | |
325 | }; | |
326 | ||
327 | static int someone_adding(struct mlx5_mr_cache *cache) | |
328 | { | |
329 | int i; | |
330 | ||
331 | for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) { | |
332 | if (cache->ent[i].cur < cache->ent[i].limit) | |
333 | return 1; | |
334 | } | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | static void __cache_work_func(struct mlx5_cache_ent *ent) | |
340 | { | |
341 | struct mlx5_ib_dev *dev = ent->dev; | |
342 | struct mlx5_mr_cache *cache = &dev->cache; | |
343 | int i = order2idx(dev, ent->order); | |
746b5583 | 344 | int err; |
e126ba97 EC |
345 | |
346 | if (cache->stopped) | |
347 | return; | |
348 | ||
349 | ent = &dev->cache.ent[i]; | |
746b5583 EC |
350 | if (ent->cur < 2 * ent->limit && !dev->fill_delay) { |
351 | err = add_keys(dev, i, 1); | |
352 | if (ent->cur < 2 * ent->limit) { | |
353 | if (err == -EAGAIN) { | |
354 | mlx5_ib_dbg(dev, "returned eagain, order %d\n", | |
355 | i + 2); | |
356 | queue_delayed_work(cache->wq, &ent->dwork, | |
357 | msecs_to_jiffies(3)); | |
358 | } else if (err) { | |
359 | mlx5_ib_warn(dev, "command failed order %d, err %d\n", | |
360 | i + 2, err); | |
361 | queue_delayed_work(cache->wq, &ent->dwork, | |
362 | msecs_to_jiffies(1000)); | |
363 | } else { | |
364 | queue_work(cache->wq, &ent->work); | |
365 | } | |
366 | } | |
e126ba97 EC |
367 | } else if (ent->cur > 2 * ent->limit) { |
368 | if (!someone_adding(cache) && | |
746b5583 | 369 | time_after(jiffies, cache->last_add + 300 * HZ)) { |
e126ba97 EC |
370 | remove_keys(dev, i, 1); |
371 | if (ent->cur > ent->limit) | |
372 | queue_work(cache->wq, &ent->work); | |
373 | } else { | |
746b5583 | 374 | queue_delayed_work(cache->wq, &ent->dwork, 300 * HZ); |
e126ba97 EC |
375 | } |
376 | } | |
377 | } | |
378 | ||
379 | static void delayed_cache_work_func(struct work_struct *work) | |
380 | { | |
381 | struct mlx5_cache_ent *ent; | |
382 | ||
383 | ent = container_of(work, struct mlx5_cache_ent, dwork.work); | |
384 | __cache_work_func(ent); | |
385 | } | |
386 | ||
387 | static void cache_work_func(struct work_struct *work) | |
388 | { | |
389 | struct mlx5_cache_ent *ent; | |
390 | ||
391 | ent = container_of(work, struct mlx5_cache_ent, work); | |
392 | __cache_work_func(ent); | |
393 | } | |
394 | ||
395 | static struct mlx5_ib_mr *alloc_cached_mr(struct mlx5_ib_dev *dev, int order) | |
396 | { | |
397 | struct mlx5_mr_cache *cache = &dev->cache; | |
398 | struct mlx5_ib_mr *mr = NULL; | |
399 | struct mlx5_cache_ent *ent; | |
400 | int c; | |
401 | int i; | |
402 | ||
403 | c = order2idx(dev, order); | |
404 | if (c < 0 || c >= MAX_MR_CACHE_ENTRIES) { | |
405 | mlx5_ib_warn(dev, "order %d, cache index %d\n", order, c); | |
406 | return NULL; | |
407 | } | |
408 | ||
409 | for (i = c; i < MAX_MR_CACHE_ENTRIES; i++) { | |
410 | ent = &cache->ent[i]; | |
411 | ||
412 | mlx5_ib_dbg(dev, "order %d, cache index %d\n", ent->order, i); | |
413 | ||
746b5583 | 414 | spin_lock_irq(&ent->lock); |
e126ba97 EC |
415 | if (!list_empty(&ent->head)) { |
416 | mr = list_first_entry(&ent->head, struct mlx5_ib_mr, | |
417 | list); | |
418 | list_del(&mr->list); | |
419 | ent->cur--; | |
746b5583 | 420 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
421 | if (ent->cur < ent->limit) |
422 | queue_work(cache->wq, &ent->work); | |
423 | break; | |
424 | } | |
746b5583 | 425 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
426 | |
427 | queue_work(cache->wq, &ent->work); | |
428 | ||
429 | if (mr) | |
430 | break; | |
431 | } | |
432 | ||
433 | if (!mr) | |
434 | cache->ent[c].miss++; | |
435 | ||
436 | return mr; | |
437 | } | |
438 | ||
439 | static void free_cached_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr) | |
440 | { | |
441 | struct mlx5_mr_cache *cache = &dev->cache; | |
442 | struct mlx5_cache_ent *ent; | |
443 | int shrink = 0; | |
444 | int c; | |
445 | ||
446 | c = order2idx(dev, mr->order); | |
447 | if (c < 0 || c >= MAX_MR_CACHE_ENTRIES) { | |
448 | mlx5_ib_warn(dev, "order %d, cache index %d\n", mr->order, c); | |
449 | return; | |
450 | } | |
451 | ent = &cache->ent[c]; | |
746b5583 | 452 | spin_lock_irq(&ent->lock); |
e126ba97 EC |
453 | list_add_tail(&mr->list, &ent->head); |
454 | ent->cur++; | |
455 | if (ent->cur > 2 * ent->limit) | |
456 | shrink = 1; | |
746b5583 | 457 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
458 | |
459 | if (shrink) | |
460 | queue_work(cache->wq, &ent->work); | |
461 | } | |
462 | ||
463 | static void clean_keys(struct mlx5_ib_dev *dev, int c) | |
464 | { | |
e126ba97 EC |
465 | struct mlx5_mr_cache *cache = &dev->cache; |
466 | struct mlx5_cache_ent *ent = &cache->ent[c]; | |
467 | struct mlx5_ib_mr *mr; | |
e126ba97 EC |
468 | int err; |
469 | ||
3c461911 | 470 | cancel_delayed_work(&ent->dwork); |
e126ba97 | 471 | while (1) { |
746b5583 | 472 | spin_lock_irq(&ent->lock); |
e126ba97 | 473 | if (list_empty(&ent->head)) { |
746b5583 | 474 | spin_unlock_irq(&ent->lock); |
e126ba97 EC |
475 | return; |
476 | } | |
477 | mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list); | |
478 | list_del(&mr->list); | |
479 | ent->cur--; | |
480 | ent->size--; | |
746b5583 | 481 | spin_unlock_irq(&ent->lock); |
9603b61d | 482 | err = mlx5_core_destroy_mkey(dev->mdev, &mr->mmr); |
203099fd | 483 | if (err) |
e126ba97 | 484 | mlx5_ib_warn(dev, "failed destroy mkey\n"); |
203099fd | 485 | else |
e126ba97 | 486 | kfree(mr); |
e126ba97 EC |
487 | } |
488 | } | |
489 | ||
490 | static int mlx5_mr_cache_debugfs_init(struct mlx5_ib_dev *dev) | |
491 | { | |
492 | struct mlx5_mr_cache *cache = &dev->cache; | |
493 | struct mlx5_cache_ent *ent; | |
494 | int i; | |
495 | ||
496 | if (!mlx5_debugfs_root) | |
497 | return 0; | |
498 | ||
9603b61d | 499 | cache->root = debugfs_create_dir("mr_cache", dev->mdev->priv.dbg_root); |
e126ba97 EC |
500 | if (!cache->root) |
501 | return -ENOMEM; | |
502 | ||
503 | for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) { | |
504 | ent = &cache->ent[i]; | |
505 | sprintf(ent->name, "%d", ent->order); | |
506 | ent->dir = debugfs_create_dir(ent->name, cache->root); | |
507 | if (!ent->dir) | |
508 | return -ENOMEM; | |
509 | ||
510 | ent->fsize = debugfs_create_file("size", 0600, ent->dir, ent, | |
511 | &size_fops); | |
512 | if (!ent->fsize) | |
513 | return -ENOMEM; | |
514 | ||
515 | ent->flimit = debugfs_create_file("limit", 0600, ent->dir, ent, | |
516 | &limit_fops); | |
517 | if (!ent->flimit) | |
518 | return -ENOMEM; | |
519 | ||
520 | ent->fcur = debugfs_create_u32("cur", 0400, ent->dir, | |
521 | &ent->cur); | |
522 | if (!ent->fcur) | |
523 | return -ENOMEM; | |
524 | ||
525 | ent->fmiss = debugfs_create_u32("miss", 0600, ent->dir, | |
526 | &ent->miss); | |
527 | if (!ent->fmiss) | |
528 | return -ENOMEM; | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
534 | static void mlx5_mr_cache_debugfs_cleanup(struct mlx5_ib_dev *dev) | |
535 | { | |
536 | if (!mlx5_debugfs_root) | |
537 | return; | |
538 | ||
539 | debugfs_remove_recursive(dev->cache.root); | |
540 | } | |
541 | ||
746b5583 EC |
542 | static void delay_time_func(unsigned long ctx) |
543 | { | |
544 | struct mlx5_ib_dev *dev = (struct mlx5_ib_dev *)ctx; | |
545 | ||
546 | dev->fill_delay = 0; | |
547 | } | |
548 | ||
e126ba97 EC |
549 | int mlx5_mr_cache_init(struct mlx5_ib_dev *dev) |
550 | { | |
551 | struct mlx5_mr_cache *cache = &dev->cache; | |
552 | struct mlx5_cache_ent *ent; | |
553 | int limit; | |
e126ba97 EC |
554 | int err; |
555 | int i; | |
556 | ||
557 | cache->wq = create_singlethread_workqueue("mkey_cache"); | |
558 | if (!cache->wq) { | |
559 | mlx5_ib_warn(dev, "failed to create work queue\n"); | |
560 | return -ENOMEM; | |
561 | } | |
562 | ||
746b5583 | 563 | setup_timer(&dev->delay_timer, delay_time_func, (unsigned long)dev); |
e126ba97 EC |
564 | for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) { |
565 | INIT_LIST_HEAD(&cache->ent[i].head); | |
566 | spin_lock_init(&cache->ent[i].lock); | |
567 | ||
568 | ent = &cache->ent[i]; | |
569 | INIT_LIST_HEAD(&ent->head); | |
570 | spin_lock_init(&ent->lock); | |
571 | ent->order = i + 2; | |
572 | ent->dev = dev; | |
573 | ||
9603b61d JM |
574 | if (dev->mdev->profile->mask & MLX5_PROF_MASK_MR_CACHE) |
575 | limit = dev->mdev->profile->mr_cache[i].limit; | |
2d036fad | 576 | else |
e126ba97 | 577 | limit = 0; |
2d036fad | 578 | |
e126ba97 EC |
579 | INIT_WORK(&ent->work, cache_work_func); |
580 | INIT_DELAYED_WORK(&ent->dwork, delayed_cache_work_func); | |
581 | ent->limit = limit; | |
582 | queue_work(cache->wq, &ent->work); | |
583 | } | |
584 | ||
585 | err = mlx5_mr_cache_debugfs_init(dev); | |
586 | if (err) | |
587 | mlx5_ib_warn(dev, "cache debugfs failure\n"); | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev) | |
593 | { | |
594 | int i; | |
595 | ||
596 | dev->cache.stopped = 1; | |
3c461911 | 597 | flush_workqueue(dev->cache.wq); |
e126ba97 EC |
598 | |
599 | mlx5_mr_cache_debugfs_cleanup(dev); | |
600 | ||
601 | for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) | |
602 | clean_keys(dev, i); | |
603 | ||
3c461911 | 604 | destroy_workqueue(dev->cache.wq); |
746b5583 | 605 | del_timer_sync(&dev->delay_timer); |
3c461911 | 606 | |
e126ba97 EC |
607 | return 0; |
608 | } | |
609 | ||
610 | struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc) | |
611 | { | |
612 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
9603b61d | 613 | struct mlx5_core_dev *mdev = dev->mdev; |
e126ba97 EC |
614 | struct mlx5_create_mkey_mbox_in *in; |
615 | struct mlx5_mkey_seg *seg; | |
616 | struct mlx5_ib_mr *mr; | |
617 | int err; | |
618 | ||
619 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
620 | if (!mr) | |
621 | return ERR_PTR(-ENOMEM); | |
622 | ||
623 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
624 | if (!in) { | |
625 | err = -ENOMEM; | |
626 | goto err_free; | |
627 | } | |
628 | ||
629 | seg = &in->seg; | |
630 | seg->flags = convert_access(acc) | MLX5_ACCESS_MODE_PA; | |
631 | seg->flags_pd = cpu_to_be32(to_mpd(pd)->pdn | MLX5_MKEY_LEN64); | |
632 | seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
633 | seg->start_addr = 0; | |
634 | ||
746b5583 EC |
635 | err = mlx5_core_create_mkey(mdev, &mr->mmr, in, sizeof(*in), NULL, NULL, |
636 | NULL); | |
e126ba97 EC |
637 | if (err) |
638 | goto err_in; | |
639 | ||
640 | kfree(in); | |
641 | mr->ibmr.lkey = mr->mmr.key; | |
642 | mr->ibmr.rkey = mr->mmr.key; | |
643 | mr->umem = NULL; | |
644 | ||
645 | return &mr->ibmr; | |
646 | ||
647 | err_in: | |
648 | kfree(in); | |
649 | ||
650 | err_free: | |
651 | kfree(mr); | |
652 | ||
653 | return ERR_PTR(err); | |
654 | } | |
655 | ||
656 | static int get_octo_len(u64 addr, u64 len, int page_size) | |
657 | { | |
658 | u64 offset; | |
659 | int npages; | |
660 | ||
661 | offset = addr & (page_size - 1); | |
662 | npages = ALIGN(len + offset, page_size) >> ilog2(page_size); | |
663 | return (npages + 1) / 2; | |
664 | } | |
665 | ||
666 | static int use_umr(int order) | |
667 | { | |
668 | return order <= 17; | |
669 | } | |
670 | ||
671 | static void prep_umr_reg_wqe(struct ib_pd *pd, struct ib_send_wr *wr, | |
672 | struct ib_sge *sg, u64 dma, int n, u32 key, | |
673 | int page_shift, u64 virt_addr, u64 len, | |
674 | int access_flags) | |
675 | { | |
676 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
677 | struct ib_mr *mr = dev->umrc.mr; | |
678 | ||
679 | sg->addr = dma; | |
680 | sg->length = ALIGN(sizeof(u64) * n, 64); | |
681 | sg->lkey = mr->lkey; | |
682 | ||
683 | wr->next = NULL; | |
684 | wr->send_flags = 0; | |
685 | wr->sg_list = sg; | |
686 | if (n) | |
687 | wr->num_sge = 1; | |
688 | else | |
689 | wr->num_sge = 0; | |
690 | ||
691 | wr->opcode = MLX5_IB_WR_UMR; | |
692 | wr->wr.fast_reg.page_list_len = n; | |
693 | wr->wr.fast_reg.page_shift = page_shift; | |
694 | wr->wr.fast_reg.rkey = key; | |
695 | wr->wr.fast_reg.iova_start = virt_addr; | |
696 | wr->wr.fast_reg.length = len; | |
697 | wr->wr.fast_reg.access_flags = access_flags; | |
698 | wr->wr.fast_reg.page_list = (struct ib_fast_reg_page_list *)pd; | |
699 | } | |
700 | ||
701 | static void prep_umr_unreg_wqe(struct mlx5_ib_dev *dev, | |
702 | struct ib_send_wr *wr, u32 key) | |
703 | { | |
704 | wr->send_flags = MLX5_IB_SEND_UMR_UNREG; | |
705 | wr->opcode = MLX5_IB_WR_UMR; | |
706 | wr->wr.fast_reg.rkey = key; | |
707 | } | |
708 | ||
709 | void mlx5_umr_cq_handler(struct ib_cq *cq, void *cq_context) | |
710 | { | |
a74d2416 | 711 | struct mlx5_ib_umr_context *context; |
e126ba97 EC |
712 | struct ib_wc wc; |
713 | int err; | |
714 | ||
715 | while (1) { | |
716 | err = ib_poll_cq(cq, 1, &wc); | |
717 | if (err < 0) { | |
718 | pr_warn("poll cq error %d\n", err); | |
719 | return; | |
720 | } | |
721 | if (err == 0) | |
722 | break; | |
723 | ||
6c9b5d9b | 724 | context = (struct mlx5_ib_umr_context *) (unsigned long) wc.wr_id; |
a74d2416 SR |
725 | context->status = wc.status; |
726 | complete(&context->done); | |
e126ba97 EC |
727 | } |
728 | ib_req_notify_cq(cq, IB_CQ_NEXT_COMP); | |
729 | } | |
730 | ||
731 | static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem, | |
732 | u64 virt_addr, u64 len, int npages, | |
733 | int page_shift, int order, int access_flags) | |
734 | { | |
735 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
203099fd | 736 | struct device *ddev = dev->ib_dev.dma_device; |
e126ba97 | 737 | struct umr_common *umrc = &dev->umrc; |
a74d2416 | 738 | struct mlx5_ib_umr_context umr_context; |
e126ba97 EC |
739 | struct ib_send_wr wr, *bad; |
740 | struct mlx5_ib_mr *mr; | |
741 | struct ib_sge sg; | |
203099fd | 742 | int size = sizeof(u64) * npages; |
096f7e72 | 743 | int err = 0; |
e126ba97 EC |
744 | int i; |
745 | ||
746b5583 | 746 | for (i = 0; i < 1; i++) { |
e126ba97 EC |
747 | mr = alloc_cached_mr(dev, order); |
748 | if (mr) | |
749 | break; | |
750 | ||
751 | err = add_keys(dev, order2idx(dev, order), 1); | |
746b5583 EC |
752 | if (err && err != -EAGAIN) { |
753 | mlx5_ib_warn(dev, "add_keys failed, err %d\n", err); | |
e126ba97 EC |
754 | break; |
755 | } | |
756 | } | |
757 | ||
758 | if (!mr) | |
759 | return ERR_PTR(-EAGAIN); | |
760 | ||
fe45f827 | 761 | mr->pas = kmalloc(size + MLX5_UMR_ALIGN - 1, GFP_KERNEL); |
203099fd EC |
762 | if (!mr->pas) { |
763 | err = -ENOMEM; | |
096f7e72 | 764 | goto free_mr; |
203099fd | 765 | } |
54313907 EC |
766 | |
767 | mlx5_ib_populate_pas(dev, umem, page_shift, | |
768 | mr_align(mr->pas, MLX5_UMR_ALIGN), 1); | |
769 | ||
fe45f827 | 770 | mr->dma = dma_map_single(ddev, mr_align(mr->pas, MLX5_UMR_ALIGN), size, |
203099fd EC |
771 | DMA_TO_DEVICE); |
772 | if (dma_mapping_error(ddev, mr->dma)) { | |
203099fd | 773 | err = -ENOMEM; |
096f7e72 | 774 | goto free_pas; |
203099fd EC |
775 | } |
776 | ||
e126ba97 | 777 | memset(&wr, 0, sizeof(wr)); |
a74d2416 | 778 | wr.wr_id = (u64)(unsigned long)&umr_context; |
e126ba97 EC |
779 | prep_umr_reg_wqe(pd, &wr, &sg, mr->dma, npages, mr->mmr.key, page_shift, virt_addr, len, access_flags); |
780 | ||
a74d2416 | 781 | mlx5_ib_init_umr_context(&umr_context); |
e126ba97 | 782 | down(&umrc->sem); |
e126ba97 EC |
783 | err = ib_post_send(umrc->qp, &wr, &bad); |
784 | if (err) { | |
785 | mlx5_ib_warn(dev, "post send failed, err %d\n", err); | |
096f7e72 | 786 | goto unmap_dma; |
a74d2416 SR |
787 | } else { |
788 | wait_for_completion(&umr_context.done); | |
789 | if (umr_context.status != IB_WC_SUCCESS) { | |
790 | mlx5_ib_warn(dev, "reg umr failed\n"); | |
791 | err = -EFAULT; | |
792 | } | |
096f7e72 | 793 | } |
e126ba97 | 794 | |
b475598a HE |
795 | mr->mmr.iova = virt_addr; |
796 | mr->mmr.size = len; | |
797 | mr->mmr.pd = to_mpd(pd)->pdn; | |
798 | ||
096f7e72 HE |
799 | unmap_dma: |
800 | up(&umrc->sem); | |
203099fd | 801 | dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE); |
096f7e72 HE |
802 | |
803 | free_pas: | |
203099fd EC |
804 | kfree(mr->pas); |
805 | ||
096f7e72 HE |
806 | free_mr: |
807 | if (err) { | |
808 | free_cached_mr(dev, mr); | |
809 | return ERR_PTR(err); | |
e126ba97 EC |
810 | } |
811 | ||
812 | return mr; | |
e126ba97 EC |
813 | } |
814 | ||
815 | static struct mlx5_ib_mr *reg_create(struct ib_pd *pd, u64 virt_addr, | |
816 | u64 length, struct ib_umem *umem, | |
817 | int npages, int page_shift, | |
818 | int access_flags) | |
819 | { | |
820 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
821 | struct mlx5_create_mkey_mbox_in *in; | |
822 | struct mlx5_ib_mr *mr; | |
823 | int inlen; | |
824 | int err; | |
825 | ||
826 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
827 | if (!mr) | |
828 | return ERR_PTR(-ENOMEM); | |
829 | ||
830 | inlen = sizeof(*in) + sizeof(*in->pas) * ((npages + 1) / 2) * 2; | |
831 | in = mlx5_vzalloc(inlen); | |
832 | if (!in) { | |
833 | err = -ENOMEM; | |
834 | goto err_1; | |
835 | } | |
836 | mlx5_ib_populate_pas(dev, umem, page_shift, in->pas, 0); | |
837 | ||
838 | in->seg.flags = convert_access(access_flags) | | |
839 | MLX5_ACCESS_MODE_MTT; | |
840 | in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn); | |
841 | in->seg.start_addr = cpu_to_be64(virt_addr); | |
842 | in->seg.len = cpu_to_be64(length); | |
843 | in->seg.bsfs_octo_size = 0; | |
844 | in->seg.xlt_oct_size = cpu_to_be32(get_octo_len(virt_addr, length, 1 << page_shift)); | |
845 | in->seg.log2_page_size = page_shift; | |
846 | in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
746b5583 EC |
847 | in->xlat_oct_act_size = cpu_to_be32(get_octo_len(virt_addr, length, |
848 | 1 << page_shift)); | |
9603b61d | 849 | err = mlx5_core_create_mkey(dev->mdev, &mr->mmr, in, inlen, NULL, |
746b5583 | 850 | NULL, NULL); |
e126ba97 EC |
851 | if (err) { |
852 | mlx5_ib_warn(dev, "create mkey failed\n"); | |
853 | goto err_2; | |
854 | } | |
855 | mr->umem = umem; | |
856 | mlx5_vfree(in); | |
857 | ||
858 | mlx5_ib_dbg(dev, "mkey = 0x%x\n", mr->mmr.key); | |
859 | ||
860 | return mr; | |
861 | ||
862 | err_2: | |
863 | mlx5_vfree(in); | |
864 | ||
865 | err_1: | |
866 | kfree(mr); | |
867 | ||
868 | return ERR_PTR(err); | |
869 | } | |
870 | ||
871 | struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, | |
872 | u64 virt_addr, int access_flags, | |
873 | struct ib_udata *udata) | |
874 | { | |
875 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
876 | struct mlx5_ib_mr *mr = NULL; | |
877 | struct ib_umem *umem; | |
878 | int page_shift; | |
879 | int npages; | |
880 | int ncont; | |
881 | int order; | |
882 | int err; | |
883 | ||
884 | mlx5_ib_dbg(dev, "start 0x%llx, virt_addr 0x%llx, length 0x%llx\n", | |
885 | start, virt_addr, length); | |
886 | umem = ib_umem_get(pd->uobject->context, start, length, access_flags, | |
887 | 0); | |
888 | if (IS_ERR(umem)) { | |
889 | mlx5_ib_dbg(dev, "umem get failed\n"); | |
890 | return (void *)umem; | |
891 | } | |
892 | ||
893 | mlx5_ib_cont_pages(umem, start, &npages, &page_shift, &ncont, &order); | |
894 | if (!npages) { | |
895 | mlx5_ib_warn(dev, "avoid zero region\n"); | |
896 | err = -EINVAL; | |
897 | goto error; | |
898 | } | |
899 | ||
900 | mlx5_ib_dbg(dev, "npages %d, ncont %d, order %d, page_shift %d\n", | |
901 | npages, ncont, order, page_shift); | |
902 | ||
903 | if (use_umr(order)) { | |
904 | mr = reg_umr(pd, umem, virt_addr, length, ncont, page_shift, | |
905 | order, access_flags); | |
906 | if (PTR_ERR(mr) == -EAGAIN) { | |
907 | mlx5_ib_dbg(dev, "cache empty for order %d", order); | |
908 | mr = NULL; | |
909 | } | |
910 | } | |
911 | ||
912 | if (!mr) | |
913 | mr = reg_create(pd, virt_addr, length, umem, ncont, page_shift, | |
914 | access_flags); | |
915 | ||
916 | if (IS_ERR(mr)) { | |
917 | err = PTR_ERR(mr); | |
918 | goto error; | |
919 | } | |
920 | ||
921 | mlx5_ib_dbg(dev, "mkey 0x%x\n", mr->mmr.key); | |
922 | ||
923 | mr->umem = umem; | |
924 | mr->npages = npages; | |
925 | spin_lock(&dev->mr_lock); | |
9603b61d | 926 | dev->mdev->priv.reg_pages += npages; |
e126ba97 EC |
927 | spin_unlock(&dev->mr_lock); |
928 | mr->ibmr.lkey = mr->mmr.key; | |
929 | mr->ibmr.rkey = mr->mmr.key; | |
930 | ||
931 | return &mr->ibmr; | |
932 | ||
933 | error: | |
934 | ib_umem_release(umem); | |
935 | return ERR_PTR(err); | |
936 | } | |
937 | ||
938 | static int unreg_umr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr) | |
939 | { | |
940 | struct umr_common *umrc = &dev->umrc; | |
a74d2416 | 941 | struct mlx5_ib_umr_context umr_context; |
e126ba97 EC |
942 | struct ib_send_wr wr, *bad; |
943 | int err; | |
944 | ||
945 | memset(&wr, 0, sizeof(wr)); | |
a74d2416 | 946 | wr.wr_id = (u64)(unsigned long)&umr_context; |
e126ba97 EC |
947 | prep_umr_unreg_wqe(dev, &wr, mr->mmr.key); |
948 | ||
a74d2416 | 949 | mlx5_ib_init_umr_context(&umr_context); |
e126ba97 | 950 | down(&umrc->sem); |
e126ba97 EC |
951 | err = ib_post_send(umrc->qp, &wr, &bad); |
952 | if (err) { | |
953 | up(&umrc->sem); | |
954 | mlx5_ib_dbg(dev, "err %d\n", err); | |
955 | goto error; | |
a74d2416 SR |
956 | } else { |
957 | wait_for_completion(&umr_context.done); | |
958 | up(&umrc->sem); | |
e126ba97 | 959 | } |
a74d2416 | 960 | if (umr_context.status != IB_WC_SUCCESS) { |
e126ba97 EC |
961 | mlx5_ib_warn(dev, "unreg umr failed\n"); |
962 | err = -EFAULT; | |
963 | goto error; | |
964 | } | |
965 | return 0; | |
966 | ||
967 | error: | |
968 | return err; | |
969 | } | |
970 | ||
971 | int mlx5_ib_dereg_mr(struct ib_mr *ibmr) | |
972 | { | |
973 | struct mlx5_ib_dev *dev = to_mdev(ibmr->device); | |
974 | struct mlx5_ib_mr *mr = to_mmr(ibmr); | |
975 | struct ib_umem *umem = mr->umem; | |
976 | int npages = mr->npages; | |
977 | int umred = mr->umred; | |
978 | int err; | |
979 | ||
980 | if (!umred) { | |
9603b61d | 981 | err = mlx5_core_destroy_mkey(dev->mdev, &mr->mmr); |
e126ba97 EC |
982 | if (err) { |
983 | mlx5_ib_warn(dev, "failed to destroy mkey 0x%x (%d)\n", | |
984 | mr->mmr.key, err); | |
985 | return err; | |
986 | } | |
987 | } else { | |
988 | err = unreg_umr(dev, mr); | |
989 | if (err) { | |
990 | mlx5_ib_warn(dev, "failed unregister\n"); | |
991 | return err; | |
992 | } | |
993 | free_cached_mr(dev, mr); | |
994 | } | |
995 | ||
996 | if (umem) { | |
997 | ib_umem_release(umem); | |
998 | spin_lock(&dev->mr_lock); | |
9603b61d | 999 | dev->mdev->priv.reg_pages -= npages; |
e126ba97 EC |
1000 | spin_unlock(&dev->mr_lock); |
1001 | } | |
1002 | ||
1003 | if (!umred) | |
1004 | kfree(mr); | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
3121e3c4 SG |
1009 | struct ib_mr *mlx5_ib_create_mr(struct ib_pd *pd, |
1010 | struct ib_mr_init_attr *mr_init_attr) | |
1011 | { | |
1012 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
1013 | struct mlx5_create_mkey_mbox_in *in; | |
1014 | struct mlx5_ib_mr *mr; | |
1015 | int access_mode, err; | |
1016 | int ndescs = roundup(mr_init_attr->max_reg_descriptors, 4); | |
1017 | ||
1018 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
1019 | if (!mr) | |
1020 | return ERR_PTR(-ENOMEM); | |
1021 | ||
1022 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
1023 | if (!in) { | |
1024 | err = -ENOMEM; | |
1025 | goto err_free; | |
1026 | } | |
1027 | ||
1028 | in->seg.status = 1 << 6; /* free */ | |
1029 | in->seg.xlt_oct_size = cpu_to_be32(ndescs); | |
1030 | in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
1031 | in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn); | |
1032 | access_mode = MLX5_ACCESS_MODE_MTT; | |
1033 | ||
1034 | if (mr_init_attr->flags & IB_MR_SIGNATURE_EN) { | |
1035 | u32 psv_index[2]; | |
1036 | ||
1037 | in->seg.flags_pd = cpu_to_be32(be32_to_cpu(in->seg.flags_pd) | | |
1038 | MLX5_MKEY_BSF_EN); | |
1039 | in->seg.bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE); | |
1040 | mr->sig = kzalloc(sizeof(*mr->sig), GFP_KERNEL); | |
1041 | if (!mr->sig) { | |
1042 | err = -ENOMEM; | |
1043 | goto err_free_in; | |
1044 | } | |
1045 | ||
1046 | /* create mem & wire PSVs */ | |
9603b61d | 1047 | err = mlx5_core_create_psv(dev->mdev, to_mpd(pd)->pdn, |
3121e3c4 SG |
1048 | 2, psv_index); |
1049 | if (err) | |
1050 | goto err_free_sig; | |
1051 | ||
1052 | access_mode = MLX5_ACCESS_MODE_KLM; | |
1053 | mr->sig->psv_memory.psv_idx = psv_index[0]; | |
1054 | mr->sig->psv_wire.psv_idx = psv_index[1]; | |
d5436ba0 SG |
1055 | |
1056 | mr->sig->sig_status_checked = true; | |
1057 | mr->sig->sig_err_exists = false; | |
1058 | /* Next UMR, Arm SIGERR */ | |
1059 | ++mr->sig->sigerr_count; | |
3121e3c4 SG |
1060 | } |
1061 | ||
1062 | in->seg.flags = MLX5_PERM_UMR_EN | access_mode; | |
9603b61d | 1063 | err = mlx5_core_create_mkey(dev->mdev, &mr->mmr, in, sizeof(*in), |
3121e3c4 SG |
1064 | NULL, NULL, NULL); |
1065 | if (err) | |
1066 | goto err_destroy_psv; | |
1067 | ||
1068 | mr->ibmr.lkey = mr->mmr.key; | |
1069 | mr->ibmr.rkey = mr->mmr.key; | |
1070 | mr->umem = NULL; | |
1071 | kfree(in); | |
1072 | ||
1073 | return &mr->ibmr; | |
1074 | ||
1075 | err_destroy_psv: | |
1076 | if (mr->sig) { | |
9603b61d | 1077 | if (mlx5_core_destroy_psv(dev->mdev, |
3121e3c4 SG |
1078 | mr->sig->psv_memory.psv_idx)) |
1079 | mlx5_ib_warn(dev, "failed to destroy mem psv %d\n", | |
1080 | mr->sig->psv_memory.psv_idx); | |
9603b61d | 1081 | if (mlx5_core_destroy_psv(dev->mdev, |
3121e3c4 SG |
1082 | mr->sig->psv_wire.psv_idx)) |
1083 | mlx5_ib_warn(dev, "failed to destroy wire psv %d\n", | |
1084 | mr->sig->psv_wire.psv_idx); | |
1085 | } | |
1086 | err_free_sig: | |
1087 | kfree(mr->sig); | |
1088 | err_free_in: | |
1089 | kfree(in); | |
1090 | err_free: | |
1091 | kfree(mr); | |
1092 | return ERR_PTR(err); | |
1093 | } | |
1094 | ||
1095 | int mlx5_ib_destroy_mr(struct ib_mr *ibmr) | |
1096 | { | |
1097 | struct mlx5_ib_dev *dev = to_mdev(ibmr->device); | |
1098 | struct mlx5_ib_mr *mr = to_mmr(ibmr); | |
1099 | int err; | |
1100 | ||
1101 | if (mr->sig) { | |
9603b61d | 1102 | if (mlx5_core_destroy_psv(dev->mdev, |
3121e3c4 SG |
1103 | mr->sig->psv_memory.psv_idx)) |
1104 | mlx5_ib_warn(dev, "failed to destroy mem psv %d\n", | |
1105 | mr->sig->psv_memory.psv_idx); | |
9603b61d | 1106 | if (mlx5_core_destroy_psv(dev->mdev, |
3121e3c4 SG |
1107 | mr->sig->psv_wire.psv_idx)) |
1108 | mlx5_ib_warn(dev, "failed to destroy wire psv %d\n", | |
1109 | mr->sig->psv_wire.psv_idx); | |
1110 | kfree(mr->sig); | |
1111 | } | |
1112 | ||
9603b61d | 1113 | err = mlx5_core_destroy_mkey(dev->mdev, &mr->mmr); |
3121e3c4 SG |
1114 | if (err) { |
1115 | mlx5_ib_warn(dev, "failed to destroy mkey 0x%x (%d)\n", | |
1116 | mr->mmr.key, err); | |
1117 | return err; | |
1118 | } | |
1119 | ||
1120 | kfree(mr); | |
1121 | ||
1122 | return err; | |
1123 | } | |
1124 | ||
e126ba97 EC |
1125 | struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd, |
1126 | int max_page_list_len) | |
1127 | { | |
1128 | struct mlx5_ib_dev *dev = to_mdev(pd->device); | |
1129 | struct mlx5_create_mkey_mbox_in *in; | |
1130 | struct mlx5_ib_mr *mr; | |
1131 | int err; | |
1132 | ||
1133 | mr = kzalloc(sizeof(*mr), GFP_KERNEL); | |
1134 | if (!mr) | |
1135 | return ERR_PTR(-ENOMEM); | |
1136 | ||
1137 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
1138 | if (!in) { | |
1139 | err = -ENOMEM; | |
1140 | goto err_free; | |
1141 | } | |
1142 | ||
1143 | in->seg.status = 1 << 6; /* free */ | |
1144 | in->seg.xlt_oct_size = cpu_to_be32((max_page_list_len + 1) / 2); | |
1145 | in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8); | |
1146 | in->seg.flags = MLX5_PERM_UMR_EN | MLX5_ACCESS_MODE_MTT; | |
1147 | in->seg.flags_pd = cpu_to_be32(to_mpd(pd)->pdn); | |
1148 | /* | |
1149 | * TBD not needed - issue 197292 */ | |
1150 | in->seg.log2_page_size = PAGE_SHIFT; | |
1151 | ||
9603b61d | 1152 | err = mlx5_core_create_mkey(dev->mdev, &mr->mmr, in, sizeof(*in), NULL, |
746b5583 | 1153 | NULL, NULL); |
e126ba97 EC |
1154 | kfree(in); |
1155 | if (err) | |
1156 | goto err_free; | |
1157 | ||
1158 | mr->ibmr.lkey = mr->mmr.key; | |
1159 | mr->ibmr.rkey = mr->mmr.key; | |
1160 | mr->umem = NULL; | |
1161 | ||
1162 | return &mr->ibmr; | |
1163 | ||
1164 | err_free: | |
1165 | kfree(mr); | |
1166 | return ERR_PTR(err); | |
1167 | } | |
1168 | ||
1169 | struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev, | |
1170 | int page_list_len) | |
1171 | { | |
1172 | struct mlx5_ib_fast_reg_page_list *mfrpl; | |
1173 | int size = page_list_len * sizeof(u64); | |
1174 | ||
1175 | mfrpl = kmalloc(sizeof(*mfrpl), GFP_KERNEL); | |
1176 | if (!mfrpl) | |
1177 | return ERR_PTR(-ENOMEM); | |
1178 | ||
1179 | mfrpl->ibfrpl.page_list = kmalloc(size, GFP_KERNEL); | |
1180 | if (!mfrpl->ibfrpl.page_list) | |
1181 | goto err_free; | |
1182 | ||
1183 | mfrpl->mapped_page_list = dma_alloc_coherent(ibdev->dma_device, | |
1184 | size, &mfrpl->map, | |
1185 | GFP_KERNEL); | |
1186 | if (!mfrpl->mapped_page_list) | |
1187 | goto err_free; | |
1188 | ||
1189 | WARN_ON(mfrpl->map & 0x3f); | |
1190 | ||
1191 | return &mfrpl->ibfrpl; | |
1192 | ||
1193 | err_free: | |
1194 | kfree(mfrpl->ibfrpl.page_list); | |
1195 | kfree(mfrpl); | |
1196 | return ERR_PTR(-ENOMEM); | |
1197 | } | |
1198 | ||
1199 | void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
1200 | { | |
1201 | struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list); | |
1202 | struct mlx5_ib_dev *dev = to_mdev(page_list->device); | |
1203 | int size = page_list->max_page_list_len * sizeof(u64); | |
1204 | ||
9603b61d | 1205 | dma_free_coherent(&dev->mdev->pdev->dev, size, mfrpl->mapped_page_list, |
e126ba97 EC |
1206 | mfrpl->map); |
1207 | kfree(mfrpl->ibfrpl.page_list); | |
1208 | kfree(mfrpl); | |
1209 | } | |
d5436ba0 SG |
1210 | |
1211 | int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask, | |
1212 | struct ib_mr_status *mr_status) | |
1213 | { | |
1214 | struct mlx5_ib_mr *mmr = to_mmr(ibmr); | |
1215 | int ret = 0; | |
1216 | ||
1217 | if (check_mask & ~IB_MR_CHECK_SIG_STATUS) { | |
1218 | pr_err("Invalid status check mask\n"); | |
1219 | ret = -EINVAL; | |
1220 | goto done; | |
1221 | } | |
1222 | ||
1223 | mr_status->fail_status = 0; | |
1224 | if (check_mask & IB_MR_CHECK_SIG_STATUS) { | |
1225 | if (!mmr->sig) { | |
1226 | ret = -EINVAL; | |
1227 | pr_err("signature status check requested on a non-signature enabled MR\n"); | |
1228 | goto done; | |
1229 | } | |
1230 | ||
1231 | mmr->sig->sig_status_checked = true; | |
1232 | if (!mmr->sig->sig_err_exists) | |
1233 | goto done; | |
1234 | ||
1235 | if (ibmr->lkey == mmr->sig->err_item.key) | |
1236 | memcpy(&mr_status->sig_err, &mmr->sig->err_item, | |
1237 | sizeof(mr_status->sig_err)); | |
1238 | else { | |
1239 | mr_status->sig_err.err_type = IB_SIG_BAD_GUARD; | |
1240 | mr_status->sig_err.sig_err_offset = 0; | |
1241 | mr_status->sig_err.key = mmr->sig->err_item.key; | |
1242 | } | |
1243 | ||
1244 | mmr->sig->sig_err_exists = false; | |
1245 | mr_status->fail_status |= IB_MR_CHECK_SIG_STATUS; | |
1246 | } | |
1247 | ||
1248 | done: | |
1249 | return ret; | |
1250 | } |