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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. | |
51a379d0 | 3 | * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. |
225c7b1f RD |
4 | * |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | */ | |
33 | ||
34 | #include "mlx4_ib.h" | |
35 | ||
36 | static u32 convert_access(int acc) | |
37 | { | |
38 | return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX4_PERM_ATOMIC : 0) | | |
39 | (acc & IB_ACCESS_REMOTE_WRITE ? MLX4_PERM_REMOTE_WRITE : 0) | | |
40 | (acc & IB_ACCESS_REMOTE_READ ? MLX4_PERM_REMOTE_READ : 0) | | |
41 | (acc & IB_ACCESS_LOCAL_WRITE ? MLX4_PERM_LOCAL_WRITE : 0) | | |
42 | MLX4_PERM_LOCAL_READ; | |
43 | } | |
44 | ||
45 | struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc) | |
46 | { | |
47 | struct mlx4_ib_mr *mr; | |
48 | int err; | |
49 | ||
50 | mr = kmalloc(sizeof *mr, GFP_KERNEL); | |
51 | if (!mr) | |
52 | return ERR_PTR(-ENOMEM); | |
53 | ||
54 | err = mlx4_mr_alloc(to_mdev(pd->device)->dev, to_mpd(pd)->pdn, 0, | |
55 | ~0ull, convert_access(acc), 0, 0, &mr->mmr); | |
56 | if (err) | |
57 | goto err_free; | |
58 | ||
59 | err = mlx4_mr_enable(to_mdev(pd->device)->dev, &mr->mmr); | |
60 | if (err) | |
61 | goto err_mr; | |
62 | ||
63 | mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key; | |
64 | mr->umem = NULL; | |
65 | ||
66 | return &mr->ibmr; | |
67 | ||
68 | err_mr: | |
69 | mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr); | |
70 | ||
71 | err_free: | |
72 | kfree(mr); | |
73 | ||
74 | return ERR_PTR(err); | |
75 | } | |
76 | ||
77 | int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt, | |
78 | struct ib_umem *umem) | |
79 | { | |
80 | u64 *pages; | |
81 | struct ib_umem_chunk *chunk; | |
82 | int i, j, k; | |
83 | int n; | |
84 | int len; | |
85 | int err = 0; | |
86 | ||
87 | pages = (u64 *) __get_free_page(GFP_KERNEL); | |
88 | if (!pages) | |
89 | return -ENOMEM; | |
90 | ||
91 | i = n = 0; | |
92 | ||
93 | list_for_each_entry(chunk, &umem->chunk_list, list) | |
94 | for (j = 0; j < chunk->nmap; ++j) { | |
95 | len = sg_dma_len(&chunk->page_list[j]) >> mtt->page_shift; | |
96 | for (k = 0; k < len; ++k) { | |
97 | pages[i++] = sg_dma_address(&chunk->page_list[j]) + | |
98 | umem->page_size * k; | |
99 | /* | |
d7bb58fb JM |
100 | * Be friendly to mlx4_write_mtt() and |
101 | * pass it chunks of appropriate size. | |
225c7b1f | 102 | */ |
d7bb58fb | 103 | if (i == PAGE_SIZE / sizeof (u64)) { |
225c7b1f RD |
104 | err = mlx4_write_mtt(dev->dev, mtt, n, |
105 | i, pages); | |
106 | if (err) | |
107 | goto out; | |
108 | n += i; | |
109 | i = 0; | |
110 | } | |
111 | } | |
112 | } | |
113 | ||
114 | if (i) | |
115 | err = mlx4_write_mtt(dev->dev, mtt, n, i, pages); | |
116 | ||
117 | out: | |
118 | free_page((unsigned long) pages); | |
119 | return err; | |
120 | } | |
121 | ||
122 | struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, | |
123 | u64 virt_addr, int access_flags, | |
124 | struct ib_udata *udata) | |
125 | { | |
126 | struct mlx4_ib_dev *dev = to_mdev(pd->device); | |
127 | struct mlx4_ib_mr *mr; | |
128 | int shift; | |
129 | int err; | |
130 | int n; | |
131 | ||
132 | mr = kmalloc(sizeof *mr, GFP_KERNEL); | |
133 | if (!mr) | |
134 | return ERR_PTR(-ENOMEM); | |
135 | ||
cb9fbc5c AK |
136 | mr->umem = ib_umem_get(pd->uobject->context, start, length, |
137 | access_flags, 0); | |
225c7b1f RD |
138 | if (IS_ERR(mr->umem)) { |
139 | err = PTR_ERR(mr->umem); | |
140 | goto err_free; | |
141 | } | |
142 | ||
143 | n = ib_umem_page_count(mr->umem); | |
144 | shift = ilog2(mr->umem->page_size); | |
145 | ||
146 | err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, virt_addr, length, | |
147 | convert_access(access_flags), n, shift, &mr->mmr); | |
148 | if (err) | |
149 | goto err_umem; | |
150 | ||
151 | err = mlx4_ib_umem_write_mtt(dev, &mr->mmr.mtt, mr->umem); | |
152 | if (err) | |
153 | goto err_mr; | |
154 | ||
155 | err = mlx4_mr_enable(dev->dev, &mr->mmr); | |
156 | if (err) | |
157 | goto err_mr; | |
158 | ||
159 | mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key; | |
160 | ||
161 | return &mr->ibmr; | |
162 | ||
163 | err_mr: | |
164 | mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr); | |
165 | ||
166 | err_umem: | |
167 | ib_umem_release(mr->umem); | |
168 | ||
169 | err_free: | |
170 | kfree(mr); | |
171 | ||
172 | return ERR_PTR(err); | |
173 | } | |
174 | ||
175 | int mlx4_ib_dereg_mr(struct ib_mr *ibmr) | |
176 | { | |
177 | struct mlx4_ib_mr *mr = to_mmr(ibmr); | |
178 | ||
179 | mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr); | |
180 | if (mr->umem) | |
181 | ib_umem_release(mr->umem); | |
182 | kfree(mr); | |
183 | ||
184 | return 0; | |
185 | } | |
8ad11fb6 | 186 | |
95d04f07 RD |
187 | struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd, |
188 | int max_page_list_len) | |
189 | { | |
190 | struct mlx4_ib_dev *dev = to_mdev(pd->device); | |
191 | struct mlx4_ib_mr *mr; | |
192 | int err; | |
193 | ||
194 | mr = kmalloc(sizeof *mr, GFP_KERNEL); | |
195 | if (!mr) | |
196 | return ERR_PTR(-ENOMEM); | |
197 | ||
198 | err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, 0, 0, 0, | |
199 | max_page_list_len, 0, &mr->mmr); | |
200 | if (err) | |
201 | goto err_free; | |
202 | ||
203 | err = mlx4_mr_enable(dev->dev, &mr->mmr); | |
204 | if (err) | |
205 | goto err_mr; | |
206 | ||
207 | return &mr->ibmr; | |
208 | ||
209 | err_mr: | |
210 | mlx4_mr_free(dev->dev, &mr->mmr); | |
211 | ||
212 | err_free: | |
213 | kfree(mr); | |
214 | return ERR_PTR(err); | |
215 | } | |
216 | ||
217 | struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev, | |
218 | int page_list_len) | |
219 | { | |
220 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
221 | struct mlx4_ib_fast_reg_page_list *mfrpl; | |
222 | int size = page_list_len * sizeof (u64); | |
223 | ||
224 | if (size > PAGE_SIZE) | |
225 | return ERR_PTR(-EINVAL); | |
226 | ||
227 | mfrpl = kmalloc(sizeof *mfrpl, GFP_KERNEL); | |
228 | if (!mfrpl) | |
229 | return ERR_PTR(-ENOMEM); | |
230 | ||
231 | mfrpl->ibfrpl.page_list = dma_alloc_coherent(&dev->dev->pdev->dev, | |
232 | size, &mfrpl->map, | |
233 | GFP_KERNEL); | |
234 | if (!mfrpl->ibfrpl.page_list) | |
235 | goto err_free; | |
236 | ||
237 | WARN_ON(mfrpl->map & 0x3f); | |
238 | ||
239 | return &mfrpl->ibfrpl; | |
240 | ||
241 | err_free: | |
242 | kfree(mfrpl); | |
243 | return ERR_PTR(-ENOMEM); | |
244 | } | |
245 | ||
246 | void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) | |
247 | { | |
248 | struct mlx4_ib_dev *dev = to_mdev(page_list->device); | |
249 | struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list); | |
250 | int size = page_list->max_page_list_len * sizeof (u64); | |
251 | ||
252 | dma_free_coherent(&dev->dev->pdev->dev, size, page_list->page_list, | |
253 | mfrpl->map); | |
254 | kfree(mfrpl); | |
255 | } | |
256 | ||
8ad11fb6 JM |
257 | struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc, |
258 | struct ib_fmr_attr *fmr_attr) | |
259 | { | |
260 | struct mlx4_ib_dev *dev = to_mdev(pd->device); | |
261 | struct mlx4_ib_fmr *fmr; | |
262 | int err = -ENOMEM; | |
263 | ||
264 | fmr = kmalloc(sizeof *fmr, GFP_KERNEL); | |
265 | if (!fmr) | |
266 | return ERR_PTR(-ENOMEM); | |
267 | ||
268 | err = mlx4_fmr_alloc(dev->dev, to_mpd(pd)->pdn, convert_access(acc), | |
269 | fmr_attr->max_pages, fmr_attr->max_maps, | |
270 | fmr_attr->page_shift, &fmr->mfmr); | |
271 | if (err) | |
272 | goto err_free; | |
273 | ||
e6028c0e | 274 | err = mlx4_fmr_enable(to_mdev(pd->device)->dev, &fmr->mfmr); |
8ad11fb6 JM |
275 | if (err) |
276 | goto err_mr; | |
277 | ||
278 | fmr->ibfmr.rkey = fmr->ibfmr.lkey = fmr->mfmr.mr.key; | |
279 | ||
280 | return &fmr->ibfmr; | |
281 | ||
282 | err_mr: | |
283 | mlx4_mr_free(to_mdev(pd->device)->dev, &fmr->mfmr.mr); | |
284 | ||
285 | err_free: | |
286 | kfree(fmr); | |
287 | ||
288 | return ERR_PTR(err); | |
289 | } | |
290 | ||
291 | int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, | |
292 | int npages, u64 iova) | |
293 | { | |
294 | struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr); | |
295 | struct mlx4_ib_dev *dev = to_mdev(ifmr->ibfmr.device); | |
296 | ||
297 | return mlx4_map_phys_fmr(dev->dev, &ifmr->mfmr, page_list, npages, iova, | |
298 | &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey); | |
299 | } | |
300 | ||
301 | int mlx4_ib_unmap_fmr(struct list_head *fmr_list) | |
302 | { | |
303 | struct ib_fmr *ibfmr; | |
304 | int err; | |
305 | struct mlx4_dev *mdev = NULL; | |
306 | ||
307 | list_for_each_entry(ibfmr, fmr_list, list) { | |
308 | if (mdev && to_mdev(ibfmr->device)->dev != mdev) | |
309 | return -EINVAL; | |
310 | mdev = to_mdev(ibfmr->device)->dev; | |
311 | } | |
312 | ||
313 | if (!mdev) | |
314 | return 0; | |
315 | ||
316 | list_for_each_entry(ibfmr, fmr_list, list) { | |
317 | struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr); | |
318 | ||
319 | mlx4_fmr_unmap(mdev, &ifmr->mfmr, &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey); | |
320 | } | |
321 | ||
322 | /* | |
323 | * Make sure all MPT status updates are visible before issuing | |
324 | * SYNC_TPT firmware command. | |
325 | */ | |
326 | wmb(); | |
327 | ||
328 | err = mlx4_SYNC_TPT(mdev); | |
329 | if (err) | |
330 | printk(KERN_WARNING "mlx4_ib: SYNC_TPT error %d when " | |
331 | "unmapping FMRs\n", err); | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
336 | int mlx4_ib_fmr_dealloc(struct ib_fmr *ibfmr) | |
337 | { | |
338 | struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr); | |
339 | struct mlx4_ib_dev *dev = to_mdev(ibfmr->device); | |
340 | int err; | |
341 | ||
342 | err = mlx4_fmr_free(dev->dev, &ifmr->mfmr); | |
343 | ||
344 | if (!err) | |
345 | kfree(ifmr); | |
346 | ||
347 | return err; | |
348 | } |