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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2007 Cisco Systems, 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 | #include "mlx4_ib.h" | |
34 | ||
35 | static u32 convert_access(int acc) | |
36 | { | |
37 | return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX4_PERM_ATOMIC : 0) | | |
38 | (acc & IB_ACCESS_REMOTE_WRITE ? MLX4_PERM_REMOTE_WRITE : 0) | | |
39 | (acc & IB_ACCESS_REMOTE_READ ? MLX4_PERM_REMOTE_READ : 0) | | |
40 | (acc & IB_ACCESS_LOCAL_WRITE ? MLX4_PERM_LOCAL_WRITE : 0) | | |
41 | MLX4_PERM_LOCAL_READ; | |
42 | } | |
43 | ||
44 | struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc) | |
45 | { | |
46 | struct mlx4_ib_mr *mr; | |
47 | int err; | |
48 | ||
49 | mr = kmalloc(sizeof *mr, GFP_KERNEL); | |
50 | if (!mr) | |
51 | return ERR_PTR(-ENOMEM); | |
52 | ||
53 | err = mlx4_mr_alloc(to_mdev(pd->device)->dev, to_mpd(pd)->pdn, 0, | |
54 | ~0ull, convert_access(acc), 0, 0, &mr->mmr); | |
55 | if (err) | |
56 | goto err_free; | |
57 | ||
58 | err = mlx4_mr_enable(to_mdev(pd->device)->dev, &mr->mmr); | |
59 | if (err) | |
60 | goto err_mr; | |
61 | ||
62 | mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key; | |
63 | mr->umem = NULL; | |
64 | ||
65 | return &mr->ibmr; | |
66 | ||
67 | err_mr: | |
68 | mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr); | |
69 | ||
70 | err_free: | |
71 | kfree(mr); | |
72 | ||
73 | return ERR_PTR(err); | |
74 | } | |
75 | ||
76 | int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, | |
77 | struct ib_umem *umem) | |
78 | { | |
79 | u64 *pages; | |
80 | struct ib_umem_chunk *chunk; | |
81 | int i, j, k; | |
82 | int n; | |
83 | int len; | |
84 | int err = 0; | |
85 | ||
86 | pages = (u64 *) __get_free_page(GFP_KERNEL); | |
87 | if (!pages) | |
88 | return -ENOMEM; | |
89 | ||
90 | i = n = 0; | |
91 | ||
92 | list_for_each_entry(chunk, &umem->chunk_list, list) | |
93 | for (j = 0; j < chunk->nmap; ++j) { | |
94 | len = sg_dma_len(&chunk->page_list[j]) >> mtt->page_shift; | |
95 | for (k = 0; k < len; ++k) { | |
96 | pages[i++] = sg_dma_address(&chunk->page_list[j]) + | |
97 | umem->page_size * k; | |
98 | /* | |
d7bb58fb JM |
99 | * Be friendly to mlx4_write_mtt() and |
100 | * pass it chunks of appropriate size. | |
225c7b1f | 101 | */ |
d7bb58fb | 102 | if (i == PAGE_SIZE / sizeof (u64)) { |
225c7b1f RD |
103 | err = mlx4_write_mtt(dev->dev, mtt, n, |
104 | i, pages); | |
105 | if (err) | |
106 | goto out; | |
107 | n += i; | |
108 | i = 0; | |
109 | } | |
110 | } | |
111 | } | |
112 | ||
113 | if (i) | |
114 | err = mlx4_write_mtt(dev->dev, mtt, n, i, pages); | |
115 | ||
116 | out: | |
117 | free_page((unsigned long) pages); | |
118 | return err; | |
119 | } | |
120 | ||
121 | struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, | |
122 | u64 virt_addr, int access_flags, | |
123 | struct ib_udata *udata) | |
124 | { | |
125 | struct mlx4_ib_dev *dev = to_mdev(pd->device); | |
126 | struct mlx4_ib_mr *mr; | |
127 | int shift; | |
128 | int err; | |
129 | int n; | |
130 | ||
131 | mr = kmalloc(sizeof *mr, GFP_KERNEL); | |
132 | if (!mr) | |
133 | return ERR_PTR(-ENOMEM); | |
134 | ||
cb9fbc5c AK |
135 | mr->umem = ib_umem_get(pd->uobject->context, start, length, |
136 | access_flags, 0); | |
225c7b1f RD |
137 | if (IS_ERR(mr->umem)) { |
138 | err = PTR_ERR(mr->umem); | |
139 | goto err_free; | |
140 | } | |
141 | ||
142 | n = ib_umem_page_count(mr->umem); | |
143 | shift = ilog2(mr->umem->page_size); | |
144 | ||
145 | err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, virt_addr, length, | |
146 | convert_access(access_flags), n, shift, &mr->mmr); | |
147 | if (err) | |
148 | goto err_umem; | |
149 | ||
150 | err = mlx4_ib_umem_write_mtt(dev, &mr->mmr.mtt, mr->umem); | |
151 | if (err) | |
152 | goto err_mr; | |
153 | ||
154 | err = mlx4_mr_enable(dev->dev, &mr->mmr); | |
155 | if (err) | |
156 | goto err_mr; | |
157 | ||
158 | mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key; | |
159 | ||
160 | return &mr->ibmr; | |
161 | ||
162 | err_mr: | |
163 | mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr); | |
164 | ||
165 | err_umem: | |
166 | ib_umem_release(mr->umem); | |
167 | ||
168 | err_free: | |
169 | kfree(mr); | |
170 | ||
171 | return ERR_PTR(err); | |
172 | } | |
173 | ||
174 | int mlx4_ib_dereg_mr(struct ib_mr *ibmr) | |
175 | { | |
176 | struct mlx4_ib_mr *mr = to_mmr(ibmr); | |
177 | ||
178 | mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr); | |
179 | if (mr->umem) | |
180 | ib_umem_release(mr->umem); | |
181 | kfree(mr); | |
182 | ||
183 | return 0; | |
184 | } | |
8ad11fb6 | 185 | |
95d04f07 RD |
186 | struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd, |
187 | int max_page_list_len) | |
188 | { | |
189 | struct mlx4_ib_dev *dev = to_mdev(pd->device); | |
190 | struct mlx4_ib_mr *mr; | |
191 | int err; | |
192 | ||
193 | mr = kmalloc(sizeof *mr, GFP_KERNEL); | |
194 | if (!mr) | |
195 | return ERR_PTR(-ENOMEM); | |
196 | ||
197 | err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, 0, 0, 0, | |
198 | max_page_list_len, 0, &mr->mmr); | |
199 | if (err) | |
200 | goto err_free; | |
201 | ||
202 | err = mlx4_mr_enable(dev->dev, &mr->mmr); | |
203 | if (err) | |
204 | goto err_mr; | |
205 | ||
206 | return &mr->ibmr; | |
207 | ||
208 | err_mr: | |
209 | mlx4_mr_free(dev->dev, &mr->mmr); | |
210 | ||
211 | err_free: | |
212 | kfree(mr); | |
213 | return ERR_PTR(err); | |
214 | } | |
215 | ||
216 | struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev, | |
217 | int page_list_len) | |
218 | { | |
219 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
220 | struct mlx4_ib_fast_reg_page_list *mfrpl; | |
221 | int size = page_list_len * sizeof (u64); | |
222 | ||
223 | if (size > PAGE_SIZE) | |
224 | return ERR_PTR(-EINVAL); | |
225 | ||
226 | mfrpl = kmalloc(sizeof *mfrpl, GFP_KERNEL); | |
227 | if (!mfrpl) | |
228 | return ERR_PTR(-ENOMEM); | |
229 | ||
230 | mfrpl->ibfrpl.page_list = dma_alloc_coherent(&dev->dev->pdev->dev, | |
231 | size, &mfrpl->map, | |
232 | GFP_KERNEL); | |
233 | if (!mfrpl->ibfrpl.page_list) | |
234 | goto err_free; | |
235 | ||
236 | WARN_ON(mfrpl->map & 0x3f); | |
237 | ||
238 | return &mfrpl->ibfrpl; | |
239 | ||
240 | err_free: | |
241 | kfree(mfrpl); | |
242 | return ERR_PTR(-ENOMEM); | |
243 | } | |
244 | ||
245 | void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
246 | { | |
247 | struct mlx4_ib_dev *dev = to_mdev(page_list->device); | |
248 | struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list); | |
249 | int size = page_list->max_page_list_len * sizeof (u64); | |
250 | ||
251 | dma_free_coherent(&dev->dev->pdev->dev, size, page_list->page_list, | |
252 | mfrpl->map); | |
253 | kfree(mfrpl); | |
254 | } | |
255 | ||
8ad11fb6 JM |
256 | struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc, |
257 | struct ib_fmr_attr *fmr_attr) | |
258 | { | |
259 | struct mlx4_ib_dev *dev = to_mdev(pd->device); | |
260 | struct mlx4_ib_fmr *fmr; | |
261 | int err = -ENOMEM; | |
262 | ||
263 | fmr = kmalloc(sizeof *fmr, GFP_KERNEL); | |
264 | if (!fmr) | |
265 | return ERR_PTR(-ENOMEM); | |
266 | ||
267 | err = mlx4_fmr_alloc(dev->dev, to_mpd(pd)->pdn, convert_access(acc), | |
268 | fmr_attr->max_pages, fmr_attr->max_maps, | |
269 | fmr_attr->page_shift, &fmr->mfmr); | |
270 | if (err) | |
271 | goto err_free; | |
272 | ||
e6028c0e | 273 | err = mlx4_fmr_enable(to_mdev(pd->device)->dev, &fmr->mfmr); |
8ad11fb6 JM |
274 | if (err) |
275 | goto err_mr; | |
276 | ||
277 | fmr->ibfmr.rkey = fmr->ibfmr.lkey = fmr->mfmr.mr.key; | |
278 | ||
279 | return &fmr->ibfmr; | |
280 | ||
281 | err_mr: | |
282 | mlx4_mr_free(to_mdev(pd->device)->dev, &fmr->mfmr.mr); | |
283 | ||
284 | err_free: | |
285 | kfree(fmr); | |
286 | ||
287 | return ERR_PTR(err); | |
288 | } | |
289 | ||
290 | int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, | |
291 | int npages, u64 iova) | |
292 | { | |
293 | struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr); | |
294 | struct mlx4_ib_dev *dev = to_mdev(ifmr->ibfmr.device); | |
295 | ||
296 | return mlx4_map_phys_fmr(dev->dev, &ifmr->mfmr, page_list, npages, iova, | |
297 | &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey); | |
298 | } | |
299 | ||
300 | int mlx4_ib_unmap_fmr(struct list_head *fmr_list) | |
301 | { | |
302 | struct ib_fmr *ibfmr; | |
303 | int err; | |
304 | struct mlx4_dev *mdev = NULL; | |
305 | ||
306 | list_for_each_entry(ibfmr, fmr_list, list) { | |
307 | if (mdev && to_mdev(ibfmr->device)->dev != mdev) | |
308 | return -EINVAL; | |
309 | mdev = to_mdev(ibfmr->device)->dev; | |
310 | } | |
311 | ||
312 | if (!mdev) | |
313 | return 0; | |
314 | ||
315 | list_for_each_entry(ibfmr, fmr_list, list) { | |
316 | struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr); | |
317 | ||
318 | mlx4_fmr_unmap(mdev, &ifmr->mfmr, &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey); | |
319 | } | |
320 | ||
321 | /* | |
322 | * Make sure all MPT status updates are visible before issuing | |
323 | * SYNC_TPT firmware command. | |
324 | */ | |
325 | wmb(); | |
326 | ||
327 | err = mlx4_SYNC_TPT(mdev); | |
328 | if (err) | |
329 | printk(KERN_WARNING "mlx4_ib: SYNC_TPT error %d when " | |
330 | "unmapping FMRs\n", err); | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
335 | int mlx4_ib_fmr_dealloc(struct ib_fmr *ibfmr) | |
336 | { | |
337 | struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr); | |
338 | struct mlx4_ib_dev *dev = to_mdev(ibfmr->device); | |
339 | int err; | |
340 | ||
341 | err = mlx4_fmr_free(dev->dev, &ifmr->mfmr); | |
342 | ||
343 | if (!err) | |
344 | kfree(ifmr); | |
345 | ||
346 | return err; | |
347 | } |