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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. | |
51a379d0 | 3 | * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. |
225c7b1f RD |
4 | * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. |
5 | * | |
6 | * This software is available to you under a choice of one of two | |
7 | * licenses. You may choose to be licensed under the terms of the GNU | |
8 | * General Public License (GPL) Version 2, available from the file | |
9 | * COPYING in the main directory of this source tree, or the | |
10 | * OpenIB.org BSD license below: | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or | |
13 | * without modification, are permitted provided that the following | |
14 | * conditions are met: | |
15 | * | |
16 | * - Redistributions of source code must retain the above | |
17 | * copyright notice, this list of conditions and the following | |
18 | * disclaimer. | |
19 | * | |
20 | * - Redistributions in binary form must reproduce the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer in the documentation and/or other materials | |
23 | * provided with the distribution. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
32 | * SOFTWARE. | |
33 | */ | |
34 | ||
225c7b1f | 35 | #include <linux/errno.h> |
ee40fa06 | 36 | #include <linux/export.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
ea51b377 | 38 | #include <linux/kernel.h> |
89dd86db | 39 | #include <linux/vmalloc.h> |
225c7b1f RD |
40 | |
41 | #include <linux/mlx4/cmd.h> | |
42 | ||
43 | #include "mlx4.h" | |
44 | #include "icm.h" | |
45 | ||
225c7b1f RD |
46 | static u32 mlx4_buddy_alloc(struct mlx4_buddy *buddy, int order) |
47 | { | |
48 | int o; | |
49 | int m; | |
50 | u32 seg; | |
51 | ||
52 | spin_lock(&buddy->lock); | |
53 | ||
e4044cfc RD |
54 | for (o = order; o <= buddy->max_order; ++o) |
55 | if (buddy->num_free[o]) { | |
56 | m = 1 << (buddy->max_order - o); | |
57 | seg = find_first_bit(buddy->bits[o], m); | |
58 | if (seg < m) | |
59 | goto found; | |
60 | } | |
225c7b1f RD |
61 | |
62 | spin_unlock(&buddy->lock); | |
63 | return -1; | |
64 | ||
65 | found: | |
66 | clear_bit(seg, buddy->bits[o]); | |
e4044cfc | 67 | --buddy->num_free[o]; |
225c7b1f RD |
68 | |
69 | while (o > order) { | |
70 | --o; | |
71 | seg <<= 1; | |
72 | set_bit(seg ^ 1, buddy->bits[o]); | |
e4044cfc | 73 | ++buddy->num_free[o]; |
225c7b1f RD |
74 | } |
75 | ||
76 | spin_unlock(&buddy->lock); | |
77 | ||
78 | seg <<= order; | |
79 | ||
80 | return seg; | |
81 | } | |
82 | ||
83 | static void mlx4_buddy_free(struct mlx4_buddy *buddy, u32 seg, int order) | |
84 | { | |
85 | seg >>= order; | |
86 | ||
87 | spin_lock(&buddy->lock); | |
88 | ||
89 | while (test_bit(seg ^ 1, buddy->bits[order])) { | |
90 | clear_bit(seg ^ 1, buddy->bits[order]); | |
e4044cfc | 91 | --buddy->num_free[order]; |
225c7b1f RD |
92 | seg >>= 1; |
93 | ++order; | |
94 | } | |
95 | ||
96 | set_bit(seg, buddy->bits[order]); | |
e4044cfc | 97 | ++buddy->num_free[order]; |
225c7b1f RD |
98 | |
99 | spin_unlock(&buddy->lock); | |
100 | } | |
101 | ||
e8f9b2ed | 102 | static int mlx4_buddy_init(struct mlx4_buddy *buddy, int max_order) |
225c7b1f RD |
103 | { |
104 | int i, s; | |
105 | ||
106 | buddy->max_order = max_order; | |
107 | spin_lock_init(&buddy->lock); | |
108 | ||
96f17d59 | 109 | buddy->bits = kcalloc(buddy->max_order + 1, sizeof (long *), |
225c7b1f | 110 | GFP_KERNEL); |
a8312755 | 111 | buddy->num_free = kcalloc((buddy->max_order + 1), sizeof *buddy->num_free, |
e4044cfc RD |
112 | GFP_KERNEL); |
113 | if (!buddy->bits || !buddy->num_free) | |
225c7b1f RD |
114 | goto err_out; |
115 | ||
116 | for (i = 0; i <= buddy->max_order; ++i) { | |
117 | s = BITS_TO_LONGS(1 << (buddy->max_order - i)); | |
96f17d59 | 118 | buddy->bits[i] = kcalloc(s, sizeof (long), GFP_KERNEL | __GFP_NOWARN); |
89dd86db | 119 | if (!buddy->bits[i]) { |
96f17d59 | 120 | buddy->bits[i] = vzalloc(s * sizeof(long)); |
89dd86db YH |
121 | if (!buddy->bits[i]) |
122 | goto err_out_free; | |
123 | } | |
225c7b1f RD |
124 | } |
125 | ||
126 | set_bit(0, buddy->bits[buddy->max_order]); | |
e4044cfc | 127 | buddy->num_free[buddy->max_order] = 1; |
225c7b1f RD |
128 | |
129 | return 0; | |
130 | ||
131 | err_out_free: | |
132 | for (i = 0; i <= buddy->max_order; ++i) | |
89dd86db YH |
133 | if (buddy->bits[i] && is_vmalloc_addr(buddy->bits[i])) |
134 | vfree(buddy->bits[i]); | |
135 | else | |
136 | kfree(buddy->bits[i]); | |
225c7b1f | 137 | |
e4044cfc | 138 | err_out: |
225c7b1f | 139 | kfree(buddy->bits); |
e4044cfc | 140 | kfree(buddy->num_free); |
225c7b1f | 141 | |
225c7b1f RD |
142 | return -ENOMEM; |
143 | } | |
144 | ||
145 | static void mlx4_buddy_cleanup(struct mlx4_buddy *buddy) | |
146 | { | |
147 | int i; | |
148 | ||
149 | for (i = 0; i <= buddy->max_order; ++i) | |
89dd86db YH |
150 | if (is_vmalloc_addr(buddy->bits[i])) |
151 | vfree(buddy->bits[i]); | |
152 | else | |
153 | kfree(buddy->bits[i]); | |
225c7b1f RD |
154 | |
155 | kfree(buddy->bits); | |
e4044cfc | 156 | kfree(buddy->num_free); |
225c7b1f RD |
157 | } |
158 | ||
c82e9aa0 | 159 | u32 __mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) |
225c7b1f RD |
160 | { |
161 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; | |
162 | u32 seg; | |
2b8fb286 MA |
163 | int seg_order; |
164 | u32 offset; | |
225c7b1f | 165 | |
2b8fb286 MA |
166 | seg_order = max_t(int, order - log_mtts_per_seg, 0); |
167 | ||
168 | seg = mlx4_buddy_alloc(&mr_table->mtt_buddy, seg_order); | |
225c7b1f RD |
169 | if (seg == -1) |
170 | return -1; | |
171 | ||
2b8fb286 MA |
172 | offset = seg * (1 << log_mtts_per_seg); |
173 | ||
174 | if (mlx4_table_get_range(dev, &mr_table->mtt_table, offset, | |
175 | offset + (1 << order) - 1)) { | |
176 | mlx4_buddy_free(&mr_table->mtt_buddy, seg, seg_order); | |
225c7b1f RD |
177 | return -1; |
178 | } | |
179 | ||
2b8fb286 | 180 | return offset; |
225c7b1f RD |
181 | } |
182 | ||
ea51b377 JM |
183 | static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) |
184 | { | |
e7dbeba8 | 185 | u64 in_param = 0; |
ea51b377 JM |
186 | u64 out_param; |
187 | int err; | |
188 | ||
189 | if (mlx4_is_mfunc(dev)) { | |
190 | set_param_l(&in_param, order); | |
191 | err = mlx4_cmd_imm(dev, in_param, &out_param, RES_MTT, | |
192 | RES_OP_RESERVE_AND_MAP, | |
193 | MLX4_CMD_ALLOC_RES, | |
194 | MLX4_CMD_TIME_CLASS_A, | |
195 | MLX4_CMD_WRAPPED); | |
196 | if (err) | |
197 | return -1; | |
198 | return get_param_l(&out_param); | |
199 | } | |
200 | return __mlx4_alloc_mtt_range(dev, order); | |
201 | } | |
202 | ||
225c7b1f RD |
203 | int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift, |
204 | struct mlx4_mtt *mtt) | |
205 | { | |
206 | int i; | |
207 | ||
208 | if (!npages) { | |
209 | mtt->order = -1; | |
210 | mtt->page_shift = MLX4_ICM_PAGE_SHIFT; | |
211 | return 0; | |
212 | } else | |
213 | mtt->page_shift = page_shift; | |
214 | ||
2b8fb286 | 215 | for (mtt->order = 0, i = 1; i < npages; i <<= 1) |
225c7b1f RD |
216 | ++mtt->order; |
217 | ||
2b8fb286 MA |
218 | mtt->offset = mlx4_alloc_mtt_range(dev, mtt->order); |
219 | if (mtt->offset == -1) | |
225c7b1f RD |
220 | return -ENOMEM; |
221 | ||
222 | return 0; | |
223 | } | |
224 | EXPORT_SYMBOL_GPL(mlx4_mtt_init); | |
225 | ||
2b8fb286 | 226 | void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order) |
225c7b1f | 227 | { |
2b8fb286 MA |
228 | u32 first_seg; |
229 | int seg_order; | |
225c7b1f RD |
230 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
231 | ||
2b8fb286 MA |
232 | seg_order = max_t(int, order - log_mtts_per_seg, 0); |
233 | first_seg = offset / (1 << log_mtts_per_seg); | |
234 | ||
235 | mlx4_buddy_free(&mr_table->mtt_buddy, first_seg, seg_order); | |
1e27ca69 MA |
236 | mlx4_table_put_range(dev, &mr_table->mtt_table, offset, |
237 | offset + (1 << order) - 1); | |
ea51b377 JM |
238 | } |
239 | ||
2b8fb286 | 240 | static void mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order) |
ea51b377 | 241 | { |
e7dbeba8 | 242 | u64 in_param = 0; |
ea51b377 JM |
243 | int err; |
244 | ||
245 | if (mlx4_is_mfunc(dev)) { | |
2b8fb286 | 246 | set_param_l(&in_param, offset); |
ea51b377 JM |
247 | set_param_h(&in_param, order); |
248 | err = mlx4_cmd(dev, in_param, RES_MTT, RES_OP_RESERVE_AND_MAP, | |
249 | MLX4_CMD_FREE_RES, | |
250 | MLX4_CMD_TIME_CLASS_A, | |
251 | MLX4_CMD_WRAPPED); | |
252 | if (err) | |
2b8fb286 MA |
253 | mlx4_warn(dev, "Failed to free mtt range at:" |
254 | "%d order:%d\n", offset, order); | |
ea51b377 JM |
255 | return; |
256 | } | |
2b8fb286 | 257 | __mlx4_free_mtt_range(dev, offset, order); |
ea51b377 JM |
258 | } |
259 | ||
260 | void mlx4_mtt_cleanup(struct mlx4_dev *dev, struct mlx4_mtt *mtt) | |
261 | { | |
225c7b1f RD |
262 | if (mtt->order < 0) |
263 | return; | |
264 | ||
2b8fb286 | 265 | mlx4_free_mtt_range(dev, mtt->offset, mtt->order); |
225c7b1f RD |
266 | } |
267 | EXPORT_SYMBOL_GPL(mlx4_mtt_cleanup); | |
268 | ||
269 | u64 mlx4_mtt_addr(struct mlx4_dev *dev, struct mlx4_mtt *mtt) | |
270 | { | |
2b8fb286 | 271 | return (u64) mtt->offset * dev->caps.mtt_entry_sz; |
225c7b1f RD |
272 | } |
273 | EXPORT_SYMBOL_GPL(mlx4_mtt_addr); | |
274 | ||
275 | static u32 hw_index_to_key(u32 ind) | |
276 | { | |
277 | return (ind >> 24) | (ind << 8); | |
278 | } | |
279 | ||
280 | static u32 key_to_hw_index(u32 key) | |
281 | { | |
282 | return (key << 24) | (key >> 8); | |
283 | } | |
284 | ||
285 | static int mlx4_SW2HW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, | |
286 | int mpt_index) | |
287 | { | |
eb41049f | 288 | return mlx4_cmd(dev, mailbox->dma, mpt_index, |
ea51b377 JM |
289 | 0, MLX4_CMD_SW2HW_MPT, MLX4_CMD_TIME_CLASS_B, |
290 | MLX4_CMD_WRAPPED); | |
225c7b1f RD |
291 | } |
292 | ||
293 | static int mlx4_HW2SW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, | |
294 | int mpt_index) | |
295 | { | |
296 | return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index, | |
f9baff50 JM |
297 | !mailbox, MLX4_CMD_HW2SW_MPT, |
298 | MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); | |
225c7b1f RD |
299 | } |
300 | ||
66431a7d | 301 | static int mlx4_mr_alloc_reserved(struct mlx4_dev *dev, u32 mridx, u32 pd, |
ea51b377 JM |
302 | u64 iova, u64 size, u32 access, int npages, |
303 | int page_shift, struct mlx4_mr *mr) | |
304 | { | |
225c7b1f RD |
305 | mr->iova = iova; |
306 | mr->size = size; | |
307 | mr->pd = pd; | |
308 | mr->access = access; | |
b20e519a | 309 | mr->enabled = MLX4_MPT_DISABLED; |
ea51b377 JM |
310 | mr->key = hw_index_to_key(mridx); |
311 | ||
312 | return mlx4_mtt_init(dev, npages, page_shift, &mr->mtt); | |
313 | } | |
ea51b377 JM |
314 | |
315 | static int mlx4_WRITE_MTT(struct mlx4_dev *dev, | |
316 | struct mlx4_cmd_mailbox *mailbox, | |
317 | int num_entries) | |
318 | { | |
319 | return mlx4_cmd(dev, mailbox->dma, num_entries, 0, MLX4_CMD_WRITE_MTT, | |
320 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); | |
321 | } | |
322 | ||
b20e519a | 323 | int __mlx4_mpt_reserve(struct mlx4_dev *dev) |
ea51b377 JM |
324 | { |
325 | struct mlx4_priv *priv = mlx4_priv(dev); | |
326 | ||
327 | return mlx4_bitmap_alloc(&priv->mr_table.mpt_bitmap); | |
328 | } | |
225c7b1f | 329 | |
b20e519a | 330 | static int mlx4_mpt_reserve(struct mlx4_dev *dev) |
ea51b377 JM |
331 | { |
332 | u64 out_param; | |
333 | ||
334 | if (mlx4_is_mfunc(dev)) { | |
335 | if (mlx4_cmd_imm(dev, 0, &out_param, RES_MPT, RES_OP_RESERVE, | |
336 | MLX4_CMD_ALLOC_RES, | |
337 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) | |
338 | return -1; | |
339 | return get_param_l(&out_param); | |
340 | } | |
b20e519a | 341 | return __mlx4_mpt_reserve(dev); |
ea51b377 JM |
342 | } |
343 | ||
b20e519a | 344 | void __mlx4_mpt_release(struct mlx4_dev *dev, u32 index) |
ea51b377 JM |
345 | { |
346 | struct mlx4_priv *priv = mlx4_priv(dev); | |
347 | ||
7c6d74d2 | 348 | mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, index, MLX4_NO_RR); |
ea51b377 JM |
349 | } |
350 | ||
b20e519a | 351 | static void mlx4_mpt_release(struct mlx4_dev *dev, u32 index) |
ea51b377 | 352 | { |
e7dbeba8 | 353 | u64 in_param = 0; |
ea51b377 JM |
354 | |
355 | if (mlx4_is_mfunc(dev)) { | |
356 | set_param_l(&in_param, index); | |
357 | if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_RESERVE, | |
358 | MLX4_CMD_FREE_RES, | |
359 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) | |
360 | mlx4_warn(dev, "Failed to release mr index:%d\n", | |
361 | index); | |
362 | return; | |
363 | } | |
b20e519a | 364 | __mlx4_mpt_release(dev, index); |
ea51b377 JM |
365 | } |
366 | ||
b20e519a | 367 | int __mlx4_mpt_alloc_icm(struct mlx4_dev *dev, u32 index) |
ea51b377 JM |
368 | { |
369 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; | |
370 | ||
371 | return mlx4_table_get(dev, &mr_table->dmpt_table, index); | |
372 | } | |
373 | ||
b20e519a | 374 | static int mlx4_mpt_alloc_icm(struct mlx4_dev *dev, u32 index) |
ea51b377 | 375 | { |
e7dbeba8 | 376 | u64 param = 0; |
ea51b377 JM |
377 | |
378 | if (mlx4_is_mfunc(dev)) { | |
379 | set_param_l(¶m, index); | |
380 | return mlx4_cmd_imm(dev, param, ¶m, RES_MPT, RES_OP_MAP_ICM, | |
381 | MLX4_CMD_ALLOC_RES, | |
382 | MLX4_CMD_TIME_CLASS_A, | |
383 | MLX4_CMD_WRAPPED); | |
384 | } | |
b20e519a | 385 | return __mlx4_mpt_alloc_icm(dev, index); |
ea51b377 JM |
386 | } |
387 | ||
b20e519a | 388 | void __mlx4_mpt_free_icm(struct mlx4_dev *dev, u32 index) |
ea51b377 JM |
389 | { |
390 | struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; | |
391 | ||
392 | mlx4_table_put(dev, &mr_table->dmpt_table, index); | |
393 | } | |
394 | ||
b20e519a | 395 | static void mlx4_mpt_free_icm(struct mlx4_dev *dev, u32 index) |
ea51b377 | 396 | { |
e7dbeba8 | 397 | u64 in_param = 0; |
ea51b377 JM |
398 | |
399 | if (mlx4_is_mfunc(dev)) { | |
400 | set_param_l(&in_param, index); | |
401 | if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_MAP_ICM, | |
402 | MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A, | |
403 | MLX4_CMD_WRAPPED)) | |
404 | mlx4_warn(dev, "Failed to free icm of mr index:%d\n", | |
405 | index); | |
406 | return; | |
407 | } | |
b20e519a | 408 | return __mlx4_mpt_free_icm(dev, index); |
ea51b377 JM |
409 | } |
410 | ||
411 | int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access, | |
412 | int npages, int page_shift, struct mlx4_mr *mr) | |
413 | { | |
414 | u32 index; | |
415 | int err; | |
416 | ||
b20e519a | 417 | index = mlx4_mpt_reserve(dev); |
ea51b377 JM |
418 | if (index == -1) |
419 | return -ENOMEM; | |
420 | ||
421 | err = mlx4_mr_alloc_reserved(dev, index, pd, iova, size, | |
422 | access, npages, page_shift, mr); | |
225c7b1f | 423 | if (err) |
b20e519a | 424 | mlx4_mpt_release(dev, index); |
225c7b1f | 425 | |
225c7b1f RD |
426 | return err; |
427 | } | |
428 | EXPORT_SYMBOL_GPL(mlx4_mr_alloc); | |
429 | ||
61083720 | 430 | static int mlx4_mr_free_reserved(struct mlx4_dev *dev, struct mlx4_mr *mr) |
225c7b1f | 431 | { |
225c7b1f RD |
432 | int err; |
433 | ||
b20e519a | 434 | if (mr->enabled == MLX4_MPT_EN_HW) { |
225c7b1f RD |
435 | err = mlx4_HW2SW_MPT(dev, NULL, |
436 | key_to_hw_index(mr->key) & | |
437 | (dev->caps.num_mpts - 1)); | |
61083720 SM |
438 | if (err) { |
439 | mlx4_warn(dev, "HW2SW_MPT failed (%d),", err); | |
440 | mlx4_warn(dev, "MR has MWs bound to it.\n"); | |
441 | return err; | |
442 | } | |
225c7b1f | 443 | |
b20e519a | 444 | mr->enabled = MLX4_MPT_EN_SW; |
ea51b377 | 445 | } |
225c7b1f | 446 | mlx4_mtt_cleanup(dev, &mr->mtt); |
61083720 SM |
447 | |
448 | return 0; | |
ea51b377 | 449 | } |
ea51b377 | 450 | |
61083720 | 451 | int mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr) |
ea51b377 | 452 | { |
61083720 SM |
453 | int ret; |
454 | ||
455 | ret = mlx4_mr_free_reserved(dev, mr); | |
456 | if (ret) | |
457 | return ret; | |
ea51b377 | 458 | if (mr->enabled) |
b20e519a SM |
459 | mlx4_mpt_free_icm(dev, key_to_hw_index(mr->key)); |
460 | mlx4_mpt_release(dev, key_to_hw_index(mr->key)); | |
61083720 SM |
461 | |
462 | return 0; | |
225c7b1f RD |
463 | } |
464 | EXPORT_SYMBOL_GPL(mlx4_mr_free); | |
465 | ||
466 | int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr) | |
467 | { | |
225c7b1f RD |
468 | struct mlx4_cmd_mailbox *mailbox; |
469 | struct mlx4_mpt_entry *mpt_entry; | |
470 | int err; | |
471 | ||
b20e519a | 472 | err = mlx4_mpt_alloc_icm(dev, key_to_hw_index(mr->key)); |
225c7b1f RD |
473 | if (err) |
474 | return err; | |
475 | ||
476 | mailbox = mlx4_alloc_cmd_mailbox(dev); | |
477 | if (IS_ERR(mailbox)) { | |
478 | err = PTR_ERR(mailbox); | |
479 | goto err_table; | |
480 | } | |
481 | mpt_entry = mailbox->buf; | |
95d04f07 | 482 | mpt_entry->flags = cpu_to_be32(MLX4_MPT_FLAG_MIO | |
225c7b1f RD |
483 | MLX4_MPT_FLAG_REGION | |
484 | mr->access); | |
225c7b1f RD |
485 | |
486 | mpt_entry->key = cpu_to_be32(key_to_hw_index(mr->key)); | |
95d04f07 | 487 | mpt_entry->pd_flags = cpu_to_be32(mr->pd | MLX4_MPT_PD_FLAG_EN_INV); |
225c7b1f RD |
488 | mpt_entry->start = cpu_to_be64(mr->iova); |
489 | mpt_entry->length = cpu_to_be64(mr->size); | |
490 | mpt_entry->entity_size = cpu_to_be32(mr->mtt.page_shift); | |
95d04f07 | 491 | |
b2d9308a JM |
492 | if (mr->mtt.order < 0) { |
493 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_PHYSICAL); | |
2b8fb286 | 494 | mpt_entry->mtt_addr = 0; |
95d04f07 | 495 | } else { |
2b8fb286 MA |
496 | mpt_entry->mtt_addr = cpu_to_be64(mlx4_mtt_addr(dev, |
497 | &mr->mtt)); | |
95d04f07 RD |
498 | } |
499 | ||
500 | if (mr->mtt.order >= 0 && mr->mtt.page_shift == 0) { | |
501 | /* fast register MR in free state */ | |
502 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_FREE); | |
c9257433 VS |
503 | mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG | |
504 | MLX4_MPT_PD_FLAG_RAE); | |
2b8fb286 | 505 | mpt_entry->mtt_sz = cpu_to_be32(1 << mr->mtt.order); |
95d04f07 RD |
506 | } else { |
507 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS); | |
508 | } | |
225c7b1f RD |
509 | |
510 | err = mlx4_SW2HW_MPT(dev, mailbox, | |
511 | key_to_hw_index(mr->key) & (dev->caps.num_mpts - 1)); | |
512 | if (err) { | |
513 | mlx4_warn(dev, "SW2HW_MPT failed (%d)\n", err); | |
514 | goto err_cmd; | |
515 | } | |
b20e519a | 516 | mr->enabled = MLX4_MPT_EN_HW; |
225c7b1f RD |
517 | |
518 | mlx4_free_cmd_mailbox(dev, mailbox); | |
519 | ||
520 | return 0; | |
521 | ||
522 | err_cmd: | |
523 | mlx4_free_cmd_mailbox(dev, mailbox); | |
524 | ||
525 | err_table: | |
b20e519a | 526 | mlx4_mpt_free_icm(dev, key_to_hw_index(mr->key)); |
225c7b1f RD |
527 | return err; |
528 | } | |
529 | EXPORT_SYMBOL_GPL(mlx4_mr_enable); | |
530 | ||
d7bb58fb JM |
531 | static int mlx4_write_mtt_chunk(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
532 | int start_index, int npages, u64 *page_list) | |
225c7b1f | 533 | { |
d7bb58fb JM |
534 | struct mlx4_priv *priv = mlx4_priv(dev); |
535 | __be64 *mtts; | |
536 | dma_addr_t dma_handle; | |
537 | int i; | |
d7bb58fb | 538 | |
2b8fb286 MA |
539 | mtts = mlx4_table_find(&priv->mr_table.mtt_table, mtt->offset + |
540 | start_index, &dma_handle); | |
d7bb58fb | 541 | |
d7bb58fb JM |
542 | if (!mtts) |
543 | return -ENOMEM; | |
544 | ||
e727f5cd RD |
545 | dma_sync_single_for_cpu(&dev->pdev->dev, dma_handle, |
546 | npages * sizeof (u64), DMA_TO_DEVICE); | |
547 | ||
d7bb58fb JM |
548 | for (i = 0; i < npages; ++i) |
549 | mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); | |
550 | ||
e727f5cd RD |
551 | dma_sync_single_for_device(&dev->pdev->dev, dma_handle, |
552 | npages * sizeof (u64), DMA_TO_DEVICE); | |
d7bb58fb JM |
553 | |
554 | return 0; | |
225c7b1f RD |
555 | } |
556 | ||
c82e9aa0 | 557 | int __mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
ea51b377 | 558 | int start_index, int npages, u64 *page_list) |
225c7b1f | 559 | { |
ea51b377 | 560 | int err = 0; |
d7bb58fb | 561 | int chunk; |
2b8fb286 MA |
562 | int mtts_per_page; |
563 | int max_mtts_first_page; | |
564 | ||
565 | /* compute how may mtts fit in the first page */ | |
566 | mtts_per_page = PAGE_SIZE / sizeof(u64); | |
567 | max_mtts_first_page = mtts_per_page - (mtt->offset + start_index) | |
568 | % mtts_per_page; | |
569 | ||
570 | chunk = min_t(int, max_mtts_first_page, npages); | |
225c7b1f | 571 | |
225c7b1f | 572 | while (npages > 0) { |
d7bb58fb | 573 | err = mlx4_write_mtt_chunk(dev, mtt, start_index, chunk, page_list); |
225c7b1f | 574 | if (err) |
d7bb58fb | 575 | return err; |
d7bb58fb JM |
576 | npages -= chunk; |
577 | start_index += chunk; | |
578 | page_list += chunk; | |
2b8fb286 MA |
579 | |
580 | chunk = min_t(int, mtts_per_page, npages); | |
225c7b1f | 581 | } |
ea51b377 JM |
582 | return err; |
583 | } | |
225c7b1f | 584 | |
ea51b377 JM |
585 | int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
586 | int start_index, int npages, u64 *page_list) | |
587 | { | |
588 | struct mlx4_cmd_mailbox *mailbox = NULL; | |
589 | __be64 *inbox = NULL; | |
590 | int chunk; | |
591 | int err = 0; | |
592 | int i; | |
593 | ||
594 | if (mtt->order < 0) | |
595 | return -EINVAL; | |
596 | ||
597 | if (mlx4_is_mfunc(dev)) { | |
598 | mailbox = mlx4_alloc_cmd_mailbox(dev); | |
599 | if (IS_ERR(mailbox)) | |
600 | return PTR_ERR(mailbox); | |
601 | inbox = mailbox->buf; | |
602 | ||
603 | while (npages > 0) { | |
2b8fb286 MA |
604 | chunk = min_t(int, MLX4_MAILBOX_SIZE / sizeof(u64) - 2, |
605 | npages); | |
606 | inbox[0] = cpu_to_be64(mtt->offset + start_index); | |
ea51b377 JM |
607 | inbox[1] = 0; |
608 | for (i = 0; i < chunk; ++i) | |
609 | inbox[i + 2] = cpu_to_be64(page_list[i] | | |
610 | MLX4_MTT_FLAG_PRESENT); | |
611 | err = mlx4_WRITE_MTT(dev, mailbox, chunk); | |
612 | if (err) { | |
613 | mlx4_free_cmd_mailbox(dev, mailbox); | |
614 | return err; | |
615 | } | |
616 | ||
617 | npages -= chunk; | |
618 | start_index += chunk; | |
619 | page_list += chunk; | |
620 | } | |
621 | mlx4_free_cmd_mailbox(dev, mailbox); | |
622 | return err; | |
623 | } | |
624 | ||
625 | return __mlx4_write_mtt(dev, mtt, start_index, npages, page_list); | |
225c7b1f RD |
626 | } |
627 | EXPORT_SYMBOL_GPL(mlx4_write_mtt); | |
628 | ||
629 | int mlx4_buf_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, | |
630 | struct mlx4_buf *buf) | |
631 | { | |
632 | u64 *page_list; | |
633 | int err; | |
634 | int i; | |
635 | ||
636 | page_list = kmalloc(buf->npages * sizeof *page_list, GFP_KERNEL); | |
637 | if (!page_list) | |
638 | return -ENOMEM; | |
639 | ||
640 | for (i = 0; i < buf->npages; ++i) | |
641 | if (buf->nbufs == 1) | |
b57aacfa | 642 | page_list[i] = buf->direct.map + (i << buf->page_shift); |
225c7b1f | 643 | else |
b57aacfa | 644 | page_list[i] = buf->page_list[i].map; |
225c7b1f RD |
645 | |
646 | err = mlx4_write_mtt(dev, mtt, 0, buf->npages, page_list); | |
647 | ||
648 | kfree(page_list); | |
649 | return err; | |
650 | } | |
651 | EXPORT_SYMBOL_GPL(mlx4_buf_write_mtt); | |
652 | ||
804d6a89 SM |
653 | int mlx4_mw_alloc(struct mlx4_dev *dev, u32 pd, enum mlx4_mw_type type, |
654 | struct mlx4_mw *mw) | |
655 | { | |
656 | u32 index; | |
657 | ||
658 | if ((type == MLX4_MW_TYPE_1 && | |
659 | !(dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)) || | |
660 | (type == MLX4_MW_TYPE_2 && | |
661 | !(dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN))) | |
662 | return -ENOTSUPP; | |
663 | ||
664 | index = mlx4_mpt_reserve(dev); | |
665 | if (index == -1) | |
666 | return -ENOMEM; | |
667 | ||
668 | mw->key = hw_index_to_key(index); | |
669 | mw->pd = pd; | |
670 | mw->type = type; | |
671 | mw->enabled = MLX4_MPT_DISABLED; | |
672 | ||
673 | return 0; | |
674 | } | |
675 | EXPORT_SYMBOL_GPL(mlx4_mw_alloc); | |
676 | ||
677 | int mlx4_mw_enable(struct mlx4_dev *dev, struct mlx4_mw *mw) | |
678 | { | |
679 | struct mlx4_cmd_mailbox *mailbox; | |
680 | struct mlx4_mpt_entry *mpt_entry; | |
681 | int err; | |
682 | ||
683 | err = mlx4_mpt_alloc_icm(dev, key_to_hw_index(mw->key)); | |
684 | if (err) | |
685 | return err; | |
686 | ||
687 | mailbox = mlx4_alloc_cmd_mailbox(dev); | |
688 | if (IS_ERR(mailbox)) { | |
689 | err = PTR_ERR(mailbox); | |
690 | goto err_table; | |
691 | } | |
692 | mpt_entry = mailbox->buf; | |
693 | ||
804d6a89 SM |
694 | /* Note that the MLX4_MPT_FLAG_REGION bit in mpt_entry->flags is turned |
695 | * off, thus creating a memory window and not a memory region. | |
696 | */ | |
697 | mpt_entry->key = cpu_to_be32(key_to_hw_index(mw->key)); | |
698 | mpt_entry->pd_flags = cpu_to_be32(mw->pd); | |
699 | if (mw->type == MLX4_MW_TYPE_2) { | |
700 | mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_FREE); | |
701 | mpt_entry->qpn = cpu_to_be32(MLX4_MPT_QP_FLAG_BOUND_QP); | |
702 | mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_EN_INV); | |
703 | } | |
704 | ||
705 | err = mlx4_SW2HW_MPT(dev, mailbox, | |
706 | key_to_hw_index(mw->key) & | |
707 | (dev->caps.num_mpts - 1)); | |
708 | if (err) { | |
709 | mlx4_warn(dev, "SW2HW_MPT failed (%d)\n", err); | |
710 | goto err_cmd; | |
711 | } | |
712 | mw->enabled = MLX4_MPT_EN_HW; | |
713 | ||
714 | mlx4_free_cmd_mailbox(dev, mailbox); | |
715 | ||
716 | return 0; | |
717 | ||
718 | err_cmd: | |
719 | mlx4_free_cmd_mailbox(dev, mailbox); | |
720 | ||
721 | err_table: | |
722 | mlx4_mpt_free_icm(dev, key_to_hw_index(mw->key)); | |
723 | return err; | |
724 | } | |
725 | EXPORT_SYMBOL_GPL(mlx4_mw_enable); | |
726 | ||
727 | void mlx4_mw_free(struct mlx4_dev *dev, struct mlx4_mw *mw) | |
728 | { | |
729 | int err; | |
730 | ||
731 | if (mw->enabled == MLX4_MPT_EN_HW) { | |
732 | err = mlx4_HW2SW_MPT(dev, NULL, | |
733 | key_to_hw_index(mw->key) & | |
734 | (dev->caps.num_mpts - 1)); | |
735 | if (err) | |
736 | mlx4_warn(dev, "xxx HW2SW_MPT failed (%d)\n", err); | |
737 | ||
738 | mw->enabled = MLX4_MPT_EN_SW; | |
739 | } | |
740 | if (mw->enabled) | |
741 | mlx4_mpt_free_icm(dev, key_to_hw_index(mw->key)); | |
742 | mlx4_mpt_release(dev, key_to_hw_index(mw->key)); | |
743 | } | |
744 | EXPORT_SYMBOL_GPL(mlx4_mw_free); | |
745 | ||
3d73c288 | 746 | int mlx4_init_mr_table(struct mlx4_dev *dev) |
225c7b1f | 747 | { |
ea51b377 JM |
748 | struct mlx4_priv *priv = mlx4_priv(dev); |
749 | struct mlx4_mr_table *mr_table = &priv->mr_table; | |
225c7b1f RD |
750 | int err; |
751 | ||
ea51b377 JM |
752 | /* Nothing to do for slaves - all MR handling is forwarded |
753 | * to the master */ | |
754 | if (mlx4_is_slave(dev)) | |
755 | return 0; | |
756 | ||
a30f1bc5 JM |
757 | if (!is_power_of_2(dev->caps.num_mpts)) |
758 | return -EINVAL; | |
759 | ||
225c7b1f | 760 | err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts, |
93fc9e1b | 761 | ~0, dev->caps.reserved_mrws, 0); |
225c7b1f RD |
762 | if (err) |
763 | return err; | |
764 | ||
765 | err = mlx4_buddy_init(&mr_table->mtt_buddy, | |
3de819e6 | 766 | ilog2((u32)dev->caps.num_mtts / |
2b8fb286 | 767 | (1 << log_mtts_per_seg))); |
225c7b1f RD |
768 | if (err) |
769 | goto err_buddy; | |
770 | ||
771 | if (dev->caps.reserved_mtts) { | |
ea51b377 JM |
772 | priv->reserved_mtts = |
773 | mlx4_alloc_mtt_range(dev, | |
774 | fls(dev->caps.reserved_mtts - 1)); | |
775 | if (priv->reserved_mtts < 0) { | |
3de819e6 | 776 | mlx4_warn(dev, "MTT table of order %u is too small.\n", |
225c7b1f RD |
777 | mr_table->mtt_buddy.max_order); |
778 | err = -ENOMEM; | |
779 | goto err_reserve_mtts; | |
780 | } | |
781 | } | |
782 | ||
783 | return 0; | |
784 | ||
785 | err_reserve_mtts: | |
786 | mlx4_buddy_cleanup(&mr_table->mtt_buddy); | |
787 | ||
788 | err_buddy: | |
789 | mlx4_bitmap_cleanup(&mr_table->mpt_bitmap); | |
790 | ||
791 | return err; | |
792 | } | |
793 | ||
794 | void mlx4_cleanup_mr_table(struct mlx4_dev *dev) | |
795 | { | |
ea51b377 JM |
796 | struct mlx4_priv *priv = mlx4_priv(dev); |
797 | struct mlx4_mr_table *mr_table = &priv->mr_table; | |
225c7b1f | 798 | |
ea51b377 JM |
799 | if (mlx4_is_slave(dev)) |
800 | return; | |
801 | if (priv->reserved_mtts >= 0) | |
802 | mlx4_free_mtt_range(dev, priv->reserved_mtts, | |
803 | fls(dev->caps.reserved_mtts - 1)); | |
225c7b1f RD |
804 | mlx4_buddy_cleanup(&mr_table->mtt_buddy); |
805 | mlx4_bitmap_cleanup(&mr_table->mpt_bitmap); | |
806 | } | |
8ad11fb6 JM |
807 | |
808 | static inline int mlx4_check_fmr(struct mlx4_fmr *fmr, u64 *page_list, | |
809 | int npages, u64 iova) | |
810 | { | |
811 | int i, page_mask; | |
812 | ||
813 | if (npages > fmr->max_pages) | |
814 | return -EINVAL; | |
815 | ||
816 | page_mask = (1 << fmr->page_shift) - 1; | |
817 | ||
818 | /* We are getting page lists, so va must be page aligned. */ | |
819 | if (iova & page_mask) | |
820 | return -EINVAL; | |
821 | ||
822 | /* Trust the user not to pass misaligned data in page_list */ | |
823 | if (0) | |
824 | for (i = 0; i < npages; ++i) { | |
825 | if (page_list[i] & ~page_mask) | |
826 | return -EINVAL; | |
827 | } | |
828 | ||
829 | if (fmr->maps >= fmr->max_maps) | |
830 | return -EINVAL; | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | int mlx4_map_phys_fmr(struct mlx4_dev *dev, struct mlx4_fmr *fmr, u64 *page_list, | |
836 | int npages, u64 iova, u32 *lkey, u32 *rkey) | |
837 | { | |
838 | u32 key; | |
839 | int i, err; | |
840 | ||
841 | err = mlx4_check_fmr(fmr, page_list, npages, iova); | |
842 | if (err) | |
843 | return err; | |
844 | ||
845 | ++fmr->maps; | |
846 | ||
847 | key = key_to_hw_index(fmr->mr.key); | |
848 | key += dev->caps.num_mpts; | |
849 | *lkey = *rkey = fmr->mr.key = hw_index_to_key(key); | |
850 | ||
851 | *(u8 *) fmr->mpt = MLX4_MPT_STATUS_SW; | |
852 | ||
853 | /* Make sure MPT status is visible before writing MTT entries */ | |
854 | wmb(); | |
855 | ||
e727f5cd RD |
856 | dma_sync_single_for_cpu(&dev->pdev->dev, fmr->dma_handle, |
857 | npages * sizeof(u64), DMA_TO_DEVICE); | |
858 | ||
8ad11fb6 JM |
859 | for (i = 0; i < npages; ++i) |
860 | fmr->mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); | |
861 | ||
e727f5cd RD |
862 | dma_sync_single_for_device(&dev->pdev->dev, fmr->dma_handle, |
863 | npages * sizeof(u64), DMA_TO_DEVICE); | |
8ad11fb6 JM |
864 | |
865 | fmr->mpt->key = cpu_to_be32(key); | |
866 | fmr->mpt->lkey = cpu_to_be32(key); | |
867 | fmr->mpt->length = cpu_to_be64(npages * (1ull << fmr->page_shift)); | |
868 | fmr->mpt->start = cpu_to_be64(iova); | |
869 | ||
870 | /* Make MTT entries are visible before setting MPT status */ | |
871 | wmb(); | |
872 | ||
873 | *(u8 *) fmr->mpt = MLX4_MPT_STATUS_HW; | |
874 | ||
875 | /* Make sure MPT status is visible before consumer can use FMR */ | |
876 | wmb(); | |
877 | ||
878 | return 0; | |
879 | } | |
880 | EXPORT_SYMBOL_GPL(mlx4_map_phys_fmr); | |
881 | ||
882 | int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages, | |
883 | int max_maps, u8 page_shift, struct mlx4_fmr *fmr) | |
884 | { | |
885 | struct mlx4_priv *priv = mlx4_priv(dev); | |
8ad11fb6 JM |
886 | int err = -ENOMEM; |
887 | ||
a5bbe892 EC |
888 | if (max_maps > dev->caps.max_fmr_maps) |
889 | return -EINVAL; | |
890 | ||
c5057ddc | 891 | if (page_shift < (ffs(dev->caps.page_size_cap) - 1) || page_shift >= 32) |
8ad11fb6 JM |
892 | return -EINVAL; |
893 | ||
894 | /* All MTTs must fit in the same page */ | |
895 | if (max_pages * sizeof *fmr->mtts > PAGE_SIZE) | |
896 | return -EINVAL; | |
897 | ||
898 | fmr->page_shift = page_shift; | |
899 | fmr->max_pages = max_pages; | |
900 | fmr->max_maps = max_maps; | |
901 | fmr->maps = 0; | |
902 | ||
903 | err = mlx4_mr_alloc(dev, pd, 0, 0, access, max_pages, | |
904 | page_shift, &fmr->mr); | |
905 | if (err) | |
906 | return err; | |
907 | ||
8ad11fb6 | 908 | fmr->mtts = mlx4_table_find(&priv->mr_table.mtt_table, |
2b8fb286 | 909 | fmr->mr.mtt.offset, |
8ad11fb6 | 910 | &fmr->dma_handle); |
2b8fb286 | 911 | |
8ad11fb6 JM |
912 | if (!fmr->mtts) { |
913 | err = -ENOMEM; | |
914 | goto err_free; | |
915 | } | |
916 | ||
8ad11fb6 JM |
917 | return 0; |
918 | ||
919 | err_free: | |
61083720 | 920 | (void) mlx4_mr_free(dev, &fmr->mr); |
8ad11fb6 JM |
921 | return err; |
922 | } | |
923 | EXPORT_SYMBOL_GPL(mlx4_fmr_alloc); | |
924 | ||
925 | int mlx4_fmr_enable(struct mlx4_dev *dev, struct mlx4_fmr *fmr) | |
926 | { | |
11e75a74 JM |
927 | struct mlx4_priv *priv = mlx4_priv(dev); |
928 | int err; | |
929 | ||
930 | err = mlx4_mr_enable(dev, &fmr->mr); | |
931 | if (err) | |
932 | return err; | |
933 | ||
934 | fmr->mpt = mlx4_table_find(&priv->mr_table.dmpt_table, | |
935 | key_to_hw_index(fmr->mr.key), NULL); | |
936 | if (!fmr->mpt) | |
937 | return -ENOMEM; | |
938 | ||
939 | return 0; | |
8ad11fb6 JM |
940 | } |
941 | EXPORT_SYMBOL_GPL(mlx4_fmr_enable); | |
942 | ||
943 | void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr, | |
944 | u32 *lkey, u32 *rkey) | |
945 | { | |
ea51b377 JM |
946 | struct mlx4_cmd_mailbox *mailbox; |
947 | int err; | |
948 | ||
8ad11fb6 JM |
949 | if (!fmr->maps) |
950 | return; | |
951 | ||
8ad11fb6 JM |
952 | fmr->maps = 0; |
953 | ||
ea51b377 JM |
954 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
955 | if (IS_ERR(mailbox)) { | |
956 | err = PTR_ERR(mailbox); | |
957 | printk(KERN_WARNING "mlx4_ib: mlx4_alloc_cmd_mailbox" | |
958 | " failed (%d)\n", err); | |
959 | return; | |
960 | } | |
961 | ||
962 | err = mlx4_HW2SW_MPT(dev, NULL, | |
963 | key_to_hw_index(fmr->mr.key) & | |
964 | (dev->caps.num_mpts - 1)); | |
965 | mlx4_free_cmd_mailbox(dev, mailbox); | |
966 | if (err) { | |
967 | printk(KERN_WARNING "mlx4_ib: mlx4_HW2SW_MPT failed (%d)\n", | |
968 | err); | |
969 | return; | |
970 | } | |
b20e519a | 971 | fmr->mr.enabled = MLX4_MPT_EN_SW; |
8ad11fb6 JM |
972 | } |
973 | EXPORT_SYMBOL_GPL(mlx4_fmr_unmap); | |
974 | ||
975 | int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr) | |
976 | { | |
61083720 SM |
977 | int ret; |
978 | ||
8ad11fb6 JM |
979 | if (fmr->maps) |
980 | return -EBUSY; | |
981 | ||
61083720 SM |
982 | ret = mlx4_mr_free(dev, &fmr->mr); |
983 | if (ret) | |
984 | return ret; | |
b20e519a | 985 | fmr->mr.enabled = MLX4_MPT_DISABLED; |
8ad11fb6 JM |
986 | |
987 | return 0; | |
988 | } | |
989 | EXPORT_SYMBOL_GPL(mlx4_fmr_free); | |
990 | ||
991 | int mlx4_SYNC_TPT(struct mlx4_dev *dev) | |
992 | { | |
f9baff50 | 993 | return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_SYNC_TPT, 1000, |
5e92d803 | 994 | MLX4_CMD_NATIVE); |
8ad11fb6 JM |
995 | } |
996 | EXPORT_SYMBOL_GPL(mlx4_SYNC_TPT); |