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fab97220 HS |
1 | /* |
2 | * IBM eServer eHCA Infiniband device driver for Linux on POWER | |
3 | * | |
4 | * MR/MW functions | |
5 | * | |
6 | * Authors: Dietmar Decker <ddecker@de.ibm.com> | |
7 | * Christoph Raisch <raisch@de.ibm.com> | |
8 | * | |
9 | * Copyright (c) 2005 IBM Corporation | |
10 | * | |
11 | * All rights reserved. | |
12 | * | |
13 | * This source code is distributed under a dual license of GPL v2.0 and OpenIB | |
14 | * BSD. | |
15 | * | |
16 | * OpenIB BSD License | |
17 | * | |
18 | * Redistribution and use in source and binary forms, with or without | |
19 | * modification, are permitted provided that the following conditions are met: | |
20 | * | |
21 | * Redistributions of source code must retain the above copyright notice, this | |
22 | * list of conditions and the following disclaimer. | |
23 | * | |
24 | * Redistributions in binary form must reproduce the above copyright notice, | |
25 | * this list of conditions and the following disclaimer in the documentation | |
26 | * and/or other materials | |
27 | * provided with the distribution. | |
28 | * | |
29 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
30 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
31 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
32 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
33 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
34 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
35 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
36 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER | |
37 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
38 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
39 | * POSSIBILITY OF SUCH DAMAGE. | |
40 | */ | |
41 | ||
f7c6a7b5 RD |
42 | #include <rdma/ib_umem.h> |
43 | ||
fab97220 HS |
44 | #include <asm/current.h> |
45 | ||
46 | #include "ehca_iverbs.h" | |
47 | #include "ehca_mrmw.h" | |
48 | #include "hcp_if.h" | |
49 | #include "hipz_hw.h" | |
50 | ||
51 | static struct kmem_cache *mr_cache; | |
52 | static struct kmem_cache *mw_cache; | |
53 | ||
54 | static struct ehca_mr *ehca_mr_new(void) | |
55 | { | |
56 | struct ehca_mr *me; | |
57 | ||
c3762229 | 58 | me = kmem_cache_zalloc(mr_cache, GFP_KERNEL); |
fab97220 | 59 | if (me) { |
fab97220 HS |
60 | spin_lock_init(&me->mrlock); |
61 | } else | |
62 | ehca_gen_err("alloc failed"); | |
63 | ||
64 | return me; | |
65 | } | |
66 | ||
67 | static void ehca_mr_delete(struct ehca_mr *me) | |
68 | { | |
69 | kmem_cache_free(mr_cache, me); | |
70 | } | |
71 | ||
72 | static struct ehca_mw *ehca_mw_new(void) | |
73 | { | |
74 | struct ehca_mw *me; | |
75 | ||
c3762229 | 76 | me = kmem_cache_zalloc(mw_cache, GFP_KERNEL); |
fab97220 | 77 | if (me) { |
fab97220 HS |
78 | spin_lock_init(&me->mwlock); |
79 | } else | |
80 | ehca_gen_err("alloc failed"); | |
81 | ||
82 | return me; | |
83 | } | |
84 | ||
85 | static void ehca_mw_delete(struct ehca_mw *me) | |
86 | { | |
87 | kmem_cache_free(mw_cache, me); | |
88 | } | |
89 | ||
90 | /*----------------------------------------------------------------------*/ | |
91 | ||
92 | struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags) | |
93 | { | |
94 | struct ib_mr *ib_mr; | |
95 | int ret; | |
96 | struct ehca_mr *e_maxmr; | |
97 | struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); | |
98 | struct ehca_shca *shca = | |
99 | container_of(pd->device, struct ehca_shca, ib_device); | |
100 | ||
101 | if (shca->maxmr) { | |
102 | e_maxmr = ehca_mr_new(); | |
103 | if (!e_maxmr) { | |
104 | ehca_err(&shca->ib_device, "out of memory"); | |
105 | ib_mr = ERR_PTR(-ENOMEM); | |
106 | goto get_dma_mr_exit0; | |
107 | } | |
108 | ||
109 | ret = ehca_reg_maxmr(shca, e_maxmr, (u64*)KERNELBASE, | |
110 | mr_access_flags, e_pd, | |
111 | &e_maxmr->ib.ib_mr.lkey, | |
112 | &e_maxmr->ib.ib_mr.rkey); | |
113 | if (ret) { | |
114 | ib_mr = ERR_PTR(ret); | |
115 | goto get_dma_mr_exit0; | |
116 | } | |
117 | ib_mr = &e_maxmr->ib.ib_mr; | |
118 | } else { | |
119 | ehca_err(&shca->ib_device, "no internal max-MR exist!"); | |
120 | ib_mr = ERR_PTR(-EINVAL); | |
121 | goto get_dma_mr_exit0; | |
122 | } | |
123 | ||
124 | get_dma_mr_exit0: | |
125 | if (IS_ERR(ib_mr)) | |
126 | ehca_err(&shca->ib_device, "rc=%lx pd=%p mr_access_flags=%x ", | |
127 | PTR_ERR(ib_mr), pd, mr_access_flags); | |
128 | return ib_mr; | |
129 | } /* end ehca_get_dma_mr() */ | |
130 | ||
131 | /*----------------------------------------------------------------------*/ | |
132 | ||
133 | struct ib_mr *ehca_reg_phys_mr(struct ib_pd *pd, | |
134 | struct ib_phys_buf *phys_buf_array, | |
135 | int num_phys_buf, | |
136 | int mr_access_flags, | |
137 | u64 *iova_start) | |
138 | { | |
139 | struct ib_mr *ib_mr; | |
140 | int ret; | |
141 | struct ehca_mr *e_mr; | |
142 | struct ehca_shca *shca = | |
143 | container_of(pd->device, struct ehca_shca, ib_device); | |
144 | struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); | |
145 | ||
146 | u64 size; | |
147 | struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; | |
148 | u32 num_pages_mr; | |
149 | u32 num_pages_4k; /* 4k portion "pages" */ | |
150 | ||
151 | if ((num_phys_buf <= 0) || !phys_buf_array) { | |
152 | ehca_err(pd->device, "bad input values: num_phys_buf=%x " | |
153 | "phys_buf_array=%p", num_phys_buf, phys_buf_array); | |
154 | ib_mr = ERR_PTR(-EINVAL); | |
155 | goto reg_phys_mr_exit0; | |
156 | } | |
157 | if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && | |
158 | !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || | |
159 | ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && | |
160 | !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) { | |
161 | /* | |
162 | * Remote Write Access requires Local Write Access | |
163 | * Remote Atomic Access requires Local Write Access | |
164 | */ | |
165 | ehca_err(pd->device, "bad input values: mr_access_flags=%x", | |
166 | mr_access_flags); | |
167 | ib_mr = ERR_PTR(-EINVAL); | |
168 | goto reg_phys_mr_exit0; | |
169 | } | |
170 | ||
171 | /* check physical buffer list and calculate size */ | |
172 | ret = ehca_mr_chk_buf_and_calc_size(phys_buf_array, num_phys_buf, | |
173 | iova_start, &size); | |
174 | if (ret) { | |
175 | ib_mr = ERR_PTR(ret); | |
176 | goto reg_phys_mr_exit0; | |
177 | } | |
178 | if ((size == 0) || | |
179 | (((u64)iova_start + size) < (u64)iova_start)) { | |
180 | ehca_err(pd->device, "bad input values: size=%lx iova_start=%p", | |
181 | size, iova_start); | |
182 | ib_mr = ERR_PTR(-EINVAL); | |
183 | goto reg_phys_mr_exit0; | |
184 | } | |
185 | ||
186 | e_mr = ehca_mr_new(); | |
187 | if (!e_mr) { | |
188 | ehca_err(pd->device, "out of memory"); | |
189 | ib_mr = ERR_PTR(-ENOMEM); | |
190 | goto reg_phys_mr_exit0; | |
191 | } | |
192 | ||
193 | /* determine number of MR pages */ | |
194 | num_pages_mr = ((((u64)iova_start % PAGE_SIZE) + size + | |
195 | PAGE_SIZE - 1) / PAGE_SIZE); | |
196 | num_pages_4k = ((((u64)iova_start % EHCA_PAGESIZE) + size + | |
197 | EHCA_PAGESIZE - 1) / EHCA_PAGESIZE); | |
198 | ||
199 | /* register MR on HCA */ | |
200 | if (ehca_mr_is_maxmr(size, iova_start)) { | |
201 | e_mr->flags |= EHCA_MR_FLAG_MAXMR; | |
202 | ret = ehca_reg_maxmr(shca, e_mr, iova_start, mr_access_flags, | |
203 | e_pd, &e_mr->ib.ib_mr.lkey, | |
204 | &e_mr->ib.ib_mr.rkey); | |
205 | if (ret) { | |
206 | ib_mr = ERR_PTR(ret); | |
207 | goto reg_phys_mr_exit1; | |
208 | } | |
209 | } else { | |
210 | pginfo.type = EHCA_MR_PGI_PHYS; | |
211 | pginfo.num_pages = num_pages_mr; | |
212 | pginfo.num_4k = num_pages_4k; | |
213 | pginfo.num_phys_buf = num_phys_buf; | |
214 | pginfo.phys_buf_array = phys_buf_array; | |
215 | pginfo.next_4k = (((u64)iova_start & ~PAGE_MASK) / | |
216 | EHCA_PAGESIZE); | |
217 | ||
218 | ret = ehca_reg_mr(shca, e_mr, iova_start, size, mr_access_flags, | |
219 | e_pd, &pginfo, &e_mr->ib.ib_mr.lkey, | |
220 | &e_mr->ib.ib_mr.rkey); | |
221 | if (ret) { | |
222 | ib_mr = ERR_PTR(ret); | |
223 | goto reg_phys_mr_exit1; | |
224 | } | |
225 | } | |
226 | ||
227 | /* successful registration of all pages */ | |
228 | return &e_mr->ib.ib_mr; | |
229 | ||
230 | reg_phys_mr_exit1: | |
231 | ehca_mr_delete(e_mr); | |
232 | reg_phys_mr_exit0: | |
233 | if (IS_ERR(ib_mr)) | |
234 | ehca_err(pd->device, "rc=%lx pd=%p phys_buf_array=%p " | |
235 | "num_phys_buf=%x mr_access_flags=%x iova_start=%p", | |
236 | PTR_ERR(ib_mr), pd, phys_buf_array, | |
237 | num_phys_buf, mr_access_flags, iova_start); | |
238 | return ib_mr; | |
239 | } /* end ehca_reg_phys_mr() */ | |
240 | ||
241 | /*----------------------------------------------------------------------*/ | |
242 | ||
f7c6a7b5 RD |
243 | struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, u64 virt, |
244 | int mr_access_flags, struct ib_udata *udata) | |
fab97220 HS |
245 | { |
246 | struct ib_mr *ib_mr; | |
247 | struct ehca_mr *e_mr; | |
248 | struct ehca_shca *shca = | |
249 | container_of(pd->device, struct ehca_shca, ib_device); | |
250 | struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); | |
251 | struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; | |
252 | int ret; | |
253 | u32 num_pages_mr; | |
254 | u32 num_pages_4k; /* 4k portion "pages" */ | |
255 | ||
256 | if (!pd) { | |
257 | ehca_gen_err("bad pd=%p", pd); | |
258 | return ERR_PTR(-EFAULT); | |
259 | } | |
f7c6a7b5 | 260 | |
fab97220 HS |
261 | if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && |
262 | !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || | |
263 | ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && | |
264 | !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) { | |
265 | /* | |
266 | * Remote Write Access requires Local Write Access | |
267 | * Remote Atomic Access requires Local Write Access | |
268 | */ | |
269 | ehca_err(pd->device, "bad input values: mr_access_flags=%x", | |
270 | mr_access_flags); | |
271 | ib_mr = ERR_PTR(-EINVAL); | |
272 | goto reg_user_mr_exit0; | |
273 | } | |
fab97220 | 274 | |
f7c6a7b5 | 275 | if (length == 0 || virt + length < virt) { |
fab97220 | 276 | ehca_err(pd->device, "bad input values: length=%lx " |
f7c6a7b5 | 277 | "virt_base=%lx", length, virt); |
fab97220 HS |
278 | ib_mr = ERR_PTR(-EINVAL); |
279 | goto reg_user_mr_exit0; | |
280 | } | |
281 | ||
282 | e_mr = ehca_mr_new(); | |
283 | if (!e_mr) { | |
284 | ehca_err(pd->device, "out of memory"); | |
285 | ib_mr = ERR_PTR(-ENOMEM); | |
286 | goto reg_user_mr_exit0; | |
287 | } | |
288 | ||
f7c6a7b5 RD |
289 | e_mr->umem = ib_umem_get(pd->uobject->context, start, length, |
290 | mr_access_flags); | |
291 | if (IS_ERR(e_mr->umem)) { | |
292 | ib_mr = (void *) e_mr->umem; | |
293 | goto reg_user_mr_exit1; | |
294 | } | |
295 | ||
296 | if (e_mr->umem->page_size != PAGE_SIZE) { | |
297 | ehca_err(pd->device, "page size not supported, " | |
298 | "e_mr->umem->page_size=%x", e_mr->umem->page_size); | |
299 | ib_mr = ERR_PTR(-EINVAL); | |
300 | goto reg_user_mr_exit2; | |
301 | } | |
302 | ||
fab97220 | 303 | /* determine number of MR pages */ |
f7c6a7b5 RD |
304 | num_pages_mr = (((virt % PAGE_SIZE) + length + PAGE_SIZE - 1) / |
305 | PAGE_SIZE); | |
306 | num_pages_4k = (((virt % EHCA_PAGESIZE) + length + EHCA_PAGESIZE - 1) / | |
307 | EHCA_PAGESIZE); | |
fab97220 HS |
308 | |
309 | /* register MR on HCA */ | |
310 | pginfo.type = EHCA_MR_PGI_USER; | |
311 | pginfo.num_pages = num_pages_mr; | |
312 | pginfo.num_4k = num_pages_4k; | |
f7c6a7b5 RD |
313 | pginfo.region = e_mr->umem; |
314 | pginfo.next_4k = e_mr->umem->offset / EHCA_PAGESIZE; | |
fab97220 | 315 | pginfo.next_chunk = list_prepare_entry(pginfo.next_chunk, |
f7c6a7b5 | 316 | (&e_mr->umem->chunk_list), |
fab97220 HS |
317 | list); |
318 | ||
f7c6a7b5 RD |
319 | ret = ehca_reg_mr(shca, e_mr, (u64*) virt, length, mr_access_flags, e_pd, |
320 | &pginfo, &e_mr->ib.ib_mr.lkey, &e_mr->ib.ib_mr.rkey); | |
fab97220 HS |
321 | if (ret) { |
322 | ib_mr = ERR_PTR(ret); | |
f7c6a7b5 | 323 | goto reg_user_mr_exit2; |
fab97220 HS |
324 | } |
325 | ||
326 | /* successful registration of all pages */ | |
327 | return &e_mr->ib.ib_mr; | |
328 | ||
f7c6a7b5 RD |
329 | reg_user_mr_exit2: |
330 | ib_umem_release(e_mr->umem); | |
fab97220 HS |
331 | reg_user_mr_exit1: |
332 | ehca_mr_delete(e_mr); | |
333 | reg_user_mr_exit0: | |
334 | if (IS_ERR(ib_mr)) | |
f7c6a7b5 | 335 | ehca_err(pd->device, "rc=%lx pd=%p mr_access_flags=%x" |
fab97220 | 336 | " udata=%p", |
f7c6a7b5 | 337 | PTR_ERR(ib_mr), pd, mr_access_flags, udata); |
fab97220 HS |
338 | return ib_mr; |
339 | } /* end ehca_reg_user_mr() */ | |
340 | ||
341 | /*----------------------------------------------------------------------*/ | |
342 | ||
343 | int ehca_rereg_phys_mr(struct ib_mr *mr, | |
344 | int mr_rereg_mask, | |
345 | struct ib_pd *pd, | |
346 | struct ib_phys_buf *phys_buf_array, | |
347 | int num_phys_buf, | |
348 | int mr_access_flags, | |
349 | u64 *iova_start) | |
350 | { | |
351 | int ret; | |
352 | ||
353 | struct ehca_shca *shca = | |
354 | container_of(mr->device, struct ehca_shca, ib_device); | |
355 | struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr); | |
356 | struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd); | |
357 | u64 new_size; | |
358 | u64 *new_start; | |
359 | u32 new_acl; | |
360 | struct ehca_pd *new_pd; | |
361 | u32 tmp_lkey, tmp_rkey; | |
362 | unsigned long sl_flags; | |
363 | u32 num_pages_mr = 0; | |
364 | u32 num_pages_4k = 0; /* 4k portion "pages" */ | |
365 | struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; | |
366 | u32 cur_pid = current->tgid; | |
367 | ||
368 | if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && | |
369 | (my_pd->ownpid != cur_pid)) { | |
370 | ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x", | |
371 | cur_pid, my_pd->ownpid); | |
372 | ret = -EINVAL; | |
373 | goto rereg_phys_mr_exit0; | |
374 | } | |
375 | ||
376 | if (!(mr_rereg_mask & IB_MR_REREG_TRANS)) { | |
377 | /* TODO not supported, because PHYP rereg hCall needs pages */ | |
378 | ehca_err(mr->device, "rereg without IB_MR_REREG_TRANS not " | |
379 | "supported yet, mr_rereg_mask=%x", mr_rereg_mask); | |
380 | ret = -EINVAL; | |
381 | goto rereg_phys_mr_exit0; | |
382 | } | |
383 | ||
384 | if (mr_rereg_mask & IB_MR_REREG_PD) { | |
385 | if (!pd) { | |
386 | ehca_err(mr->device, "rereg with bad pd, pd=%p " | |
387 | "mr_rereg_mask=%x", pd, mr_rereg_mask); | |
388 | ret = -EINVAL; | |
389 | goto rereg_phys_mr_exit0; | |
390 | } | |
391 | } | |
392 | ||
393 | if ((mr_rereg_mask & | |
394 | ~(IB_MR_REREG_TRANS | IB_MR_REREG_PD | IB_MR_REREG_ACCESS)) || | |
395 | (mr_rereg_mask == 0)) { | |
396 | ret = -EINVAL; | |
397 | goto rereg_phys_mr_exit0; | |
398 | } | |
399 | ||
400 | /* check other parameters */ | |
401 | if (e_mr == shca->maxmr) { | |
402 | /* should be impossible, however reject to be sure */ | |
403 | ehca_err(mr->device, "rereg internal max-MR impossible, mr=%p " | |
404 | "shca->maxmr=%p mr->lkey=%x", | |
405 | mr, shca->maxmr, mr->lkey); | |
406 | ret = -EINVAL; | |
407 | goto rereg_phys_mr_exit0; | |
408 | } | |
409 | if (mr_rereg_mask & IB_MR_REREG_TRANS) { /* transl., i.e. addr/size */ | |
410 | if (e_mr->flags & EHCA_MR_FLAG_FMR) { | |
411 | ehca_err(mr->device, "not supported for FMR, mr=%p " | |
412 | "flags=%x", mr, e_mr->flags); | |
413 | ret = -EINVAL; | |
414 | goto rereg_phys_mr_exit0; | |
415 | } | |
416 | if (!phys_buf_array || num_phys_buf <= 0) { | |
417 | ehca_err(mr->device, "bad input values: mr_rereg_mask=%x" | |
418 | " phys_buf_array=%p num_phys_buf=%x", | |
419 | mr_rereg_mask, phys_buf_array, num_phys_buf); | |
420 | ret = -EINVAL; | |
421 | goto rereg_phys_mr_exit0; | |
422 | } | |
423 | } | |
424 | if ((mr_rereg_mask & IB_MR_REREG_ACCESS) && /* change ACL */ | |
425 | (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && | |
426 | !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || | |
427 | ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && | |
428 | !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)))) { | |
429 | /* | |
430 | * Remote Write Access requires Local Write Access | |
431 | * Remote Atomic Access requires Local Write Access | |
432 | */ | |
433 | ehca_err(mr->device, "bad input values: mr_rereg_mask=%x " | |
434 | "mr_access_flags=%x", mr_rereg_mask, mr_access_flags); | |
435 | ret = -EINVAL; | |
436 | goto rereg_phys_mr_exit0; | |
437 | } | |
438 | ||
439 | /* set requested values dependent on rereg request */ | |
440 | spin_lock_irqsave(&e_mr->mrlock, sl_flags); | |
441 | new_start = e_mr->start; /* new == old address */ | |
442 | new_size = e_mr->size; /* new == old length */ | |
443 | new_acl = e_mr->acl; /* new == old access control */ | |
444 | new_pd = container_of(mr->pd,struct ehca_pd,ib_pd); /*new == old PD*/ | |
445 | ||
446 | if (mr_rereg_mask & IB_MR_REREG_TRANS) { | |
447 | new_start = iova_start; /* change address */ | |
448 | /* check physical buffer list and calculate size */ | |
449 | ret = ehca_mr_chk_buf_and_calc_size(phys_buf_array, | |
450 | num_phys_buf, iova_start, | |
451 | &new_size); | |
452 | if (ret) | |
453 | goto rereg_phys_mr_exit1; | |
454 | if ((new_size == 0) || | |
455 | (((u64)iova_start + new_size) < (u64)iova_start)) { | |
456 | ehca_err(mr->device, "bad input values: new_size=%lx " | |
457 | "iova_start=%p", new_size, iova_start); | |
458 | ret = -EINVAL; | |
459 | goto rereg_phys_mr_exit1; | |
460 | } | |
461 | num_pages_mr = ((((u64)new_start % PAGE_SIZE) + new_size + | |
462 | PAGE_SIZE - 1) / PAGE_SIZE); | |
463 | num_pages_4k = ((((u64)new_start % EHCA_PAGESIZE) + new_size + | |
464 | EHCA_PAGESIZE - 1) / EHCA_PAGESIZE); | |
465 | pginfo.type = EHCA_MR_PGI_PHYS; | |
466 | pginfo.num_pages = num_pages_mr; | |
467 | pginfo.num_4k = num_pages_4k; | |
468 | pginfo.num_phys_buf = num_phys_buf; | |
469 | pginfo.phys_buf_array = phys_buf_array; | |
470 | pginfo.next_4k = (((u64)iova_start & ~PAGE_MASK) / | |
471 | EHCA_PAGESIZE); | |
472 | } | |
473 | if (mr_rereg_mask & IB_MR_REREG_ACCESS) | |
474 | new_acl = mr_access_flags; | |
475 | if (mr_rereg_mask & IB_MR_REREG_PD) | |
476 | new_pd = container_of(pd, struct ehca_pd, ib_pd); | |
477 | ||
478 | ret = ehca_rereg_mr(shca, e_mr, new_start, new_size, new_acl, | |
479 | new_pd, &pginfo, &tmp_lkey, &tmp_rkey); | |
480 | if (ret) | |
481 | goto rereg_phys_mr_exit1; | |
482 | ||
483 | /* successful reregistration */ | |
484 | if (mr_rereg_mask & IB_MR_REREG_PD) | |
485 | mr->pd = pd; | |
486 | mr->lkey = tmp_lkey; | |
487 | mr->rkey = tmp_rkey; | |
488 | ||
489 | rereg_phys_mr_exit1: | |
490 | spin_unlock_irqrestore(&e_mr->mrlock, sl_flags); | |
491 | rereg_phys_mr_exit0: | |
492 | if (ret) | |
493 | ehca_err(mr->device, "ret=%x mr=%p mr_rereg_mask=%x pd=%p " | |
494 | "phys_buf_array=%p num_phys_buf=%x mr_access_flags=%x " | |
495 | "iova_start=%p", | |
496 | ret, mr, mr_rereg_mask, pd, phys_buf_array, | |
497 | num_phys_buf, mr_access_flags, iova_start); | |
498 | return ret; | |
499 | } /* end ehca_rereg_phys_mr() */ | |
500 | ||
501 | /*----------------------------------------------------------------------*/ | |
502 | ||
503 | int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) | |
504 | { | |
505 | int ret = 0; | |
506 | u64 h_ret; | |
507 | struct ehca_shca *shca = | |
508 | container_of(mr->device, struct ehca_shca, ib_device); | |
509 | struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr); | |
510 | struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd); | |
511 | u32 cur_pid = current->tgid; | |
512 | unsigned long sl_flags; | |
513 | struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; | |
514 | ||
515 | if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && | |
516 | (my_pd->ownpid != cur_pid)) { | |
517 | ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x", | |
518 | cur_pid, my_pd->ownpid); | |
519 | ret = -EINVAL; | |
520 | goto query_mr_exit0; | |
521 | } | |
522 | ||
523 | if ((e_mr->flags & EHCA_MR_FLAG_FMR)) { | |
524 | ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p " | |
525 | "e_mr->flags=%x", mr, e_mr, e_mr->flags); | |
526 | ret = -EINVAL; | |
527 | goto query_mr_exit0; | |
528 | } | |
529 | ||
530 | memset(mr_attr, 0, sizeof(struct ib_mr_attr)); | |
531 | spin_lock_irqsave(&e_mr->mrlock, sl_flags); | |
532 | ||
533 | h_ret = hipz_h_query_mr(shca->ipz_hca_handle, e_mr, &hipzout); | |
534 | if (h_ret != H_SUCCESS) { | |
535 | ehca_err(mr->device, "hipz_mr_query failed, h_ret=%lx mr=%p " | |
536 | "hca_hndl=%lx mr_hndl=%lx lkey=%x", | |
537 | h_ret, mr, shca->ipz_hca_handle.handle, | |
538 | e_mr->ipz_mr_handle.handle, mr->lkey); | |
539 | ret = ehca_mrmw_map_hrc_query_mr(h_ret); | |
540 | goto query_mr_exit1; | |
541 | } | |
542 | mr_attr->pd = mr->pd; | |
543 | mr_attr->device_virt_addr = hipzout.vaddr; | |
544 | mr_attr->size = hipzout.len; | |
545 | mr_attr->lkey = hipzout.lkey; | |
546 | mr_attr->rkey = hipzout.rkey; | |
547 | ehca_mrmw_reverse_map_acl(&hipzout.acl, &mr_attr->mr_access_flags); | |
548 | ||
549 | query_mr_exit1: | |
550 | spin_unlock_irqrestore(&e_mr->mrlock, sl_flags); | |
551 | query_mr_exit0: | |
552 | if (ret) | |
553 | ehca_err(mr->device, "ret=%x mr=%p mr_attr=%p", | |
554 | ret, mr, mr_attr); | |
555 | return ret; | |
556 | } /* end ehca_query_mr() */ | |
557 | ||
558 | /*----------------------------------------------------------------------*/ | |
559 | ||
560 | int ehca_dereg_mr(struct ib_mr *mr) | |
561 | { | |
562 | int ret = 0; | |
563 | u64 h_ret; | |
564 | struct ehca_shca *shca = | |
565 | container_of(mr->device, struct ehca_shca, ib_device); | |
566 | struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr); | |
567 | struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd); | |
568 | u32 cur_pid = current->tgid; | |
569 | ||
570 | if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && | |
571 | (my_pd->ownpid != cur_pid)) { | |
572 | ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x", | |
573 | cur_pid, my_pd->ownpid); | |
574 | ret = -EINVAL; | |
575 | goto dereg_mr_exit0; | |
576 | } | |
577 | ||
578 | if ((e_mr->flags & EHCA_MR_FLAG_FMR)) { | |
579 | ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p " | |
580 | "e_mr->flags=%x", mr, e_mr, e_mr->flags); | |
581 | ret = -EINVAL; | |
582 | goto dereg_mr_exit0; | |
583 | } else if (e_mr == shca->maxmr) { | |
584 | /* should be impossible, however reject to be sure */ | |
585 | ehca_err(mr->device, "dereg internal max-MR impossible, mr=%p " | |
586 | "shca->maxmr=%p mr->lkey=%x", | |
587 | mr, shca->maxmr, mr->lkey); | |
588 | ret = -EINVAL; | |
589 | goto dereg_mr_exit0; | |
590 | } | |
591 | ||
592 | /* TODO: BUSY: MR still has bound window(s) */ | |
593 | h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); | |
594 | if (h_ret != H_SUCCESS) { | |
595 | ehca_err(mr->device, "hipz_free_mr failed, h_ret=%lx shca=%p " | |
596 | "e_mr=%p hca_hndl=%lx mr_hndl=%lx mr->lkey=%x", | |
597 | h_ret, shca, e_mr, shca->ipz_hca_handle.handle, | |
598 | e_mr->ipz_mr_handle.handle, mr->lkey); | |
599 | ret = ehca_mrmw_map_hrc_free_mr(h_ret); | |
600 | goto dereg_mr_exit0; | |
601 | } | |
602 | ||
f7c6a7b5 RD |
603 | if (e_mr->umem) |
604 | ib_umem_release(e_mr->umem); | |
605 | ||
fab97220 HS |
606 | /* successful deregistration */ |
607 | ehca_mr_delete(e_mr); | |
608 | ||
609 | dereg_mr_exit0: | |
610 | if (ret) | |
611 | ehca_err(mr->device, "ret=%x mr=%p", ret, mr); | |
612 | return ret; | |
613 | } /* end ehca_dereg_mr() */ | |
614 | ||
615 | /*----------------------------------------------------------------------*/ | |
616 | ||
617 | struct ib_mw *ehca_alloc_mw(struct ib_pd *pd) | |
618 | { | |
619 | struct ib_mw *ib_mw; | |
620 | u64 h_ret; | |
621 | struct ehca_mw *e_mw; | |
622 | struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); | |
623 | struct ehca_shca *shca = | |
624 | container_of(pd->device, struct ehca_shca, ib_device); | |
625 | struct ehca_mw_hipzout_parms hipzout = {{0},0}; | |
626 | ||
627 | e_mw = ehca_mw_new(); | |
628 | if (!e_mw) { | |
629 | ib_mw = ERR_PTR(-ENOMEM); | |
630 | goto alloc_mw_exit0; | |
631 | } | |
632 | ||
633 | h_ret = hipz_h_alloc_resource_mw(shca->ipz_hca_handle, e_mw, | |
634 | e_pd->fw_pd, &hipzout); | |
635 | if (h_ret != H_SUCCESS) { | |
636 | ehca_err(pd->device, "hipz_mw_allocate failed, h_ret=%lx " | |
637 | "shca=%p hca_hndl=%lx mw=%p", | |
638 | h_ret, shca, shca->ipz_hca_handle.handle, e_mw); | |
639 | ib_mw = ERR_PTR(ehca_mrmw_map_hrc_alloc(h_ret)); | |
640 | goto alloc_mw_exit1; | |
641 | } | |
642 | /* successful MW allocation */ | |
643 | e_mw->ipz_mw_handle = hipzout.handle; | |
644 | e_mw->ib_mw.rkey = hipzout.rkey; | |
645 | return &e_mw->ib_mw; | |
646 | ||
647 | alloc_mw_exit1: | |
648 | ehca_mw_delete(e_mw); | |
649 | alloc_mw_exit0: | |
650 | if (IS_ERR(ib_mw)) | |
651 | ehca_err(pd->device, "rc=%lx pd=%p", PTR_ERR(ib_mw), pd); | |
652 | return ib_mw; | |
653 | } /* end ehca_alloc_mw() */ | |
654 | ||
655 | /*----------------------------------------------------------------------*/ | |
656 | ||
657 | int ehca_bind_mw(struct ib_qp *qp, | |
658 | struct ib_mw *mw, | |
659 | struct ib_mw_bind *mw_bind) | |
660 | { | |
661 | /* TODO: not supported up to now */ | |
662 | ehca_gen_err("bind MW currently not supported by HCAD"); | |
663 | ||
664 | return -EPERM; | |
665 | } /* end ehca_bind_mw() */ | |
666 | ||
667 | /*----------------------------------------------------------------------*/ | |
668 | ||
669 | int ehca_dealloc_mw(struct ib_mw *mw) | |
670 | { | |
671 | u64 h_ret; | |
672 | struct ehca_shca *shca = | |
673 | container_of(mw->device, struct ehca_shca, ib_device); | |
674 | struct ehca_mw *e_mw = container_of(mw, struct ehca_mw, ib_mw); | |
675 | ||
676 | h_ret = hipz_h_free_resource_mw(shca->ipz_hca_handle, e_mw); | |
677 | if (h_ret != H_SUCCESS) { | |
678 | ehca_err(mw->device, "hipz_free_mw failed, h_ret=%lx shca=%p " | |
679 | "mw=%p rkey=%x hca_hndl=%lx mw_hndl=%lx", | |
680 | h_ret, shca, mw, mw->rkey, shca->ipz_hca_handle.handle, | |
681 | e_mw->ipz_mw_handle.handle); | |
682 | return ehca_mrmw_map_hrc_free_mw(h_ret); | |
683 | } | |
684 | /* successful deallocation */ | |
685 | ehca_mw_delete(e_mw); | |
686 | return 0; | |
687 | } /* end ehca_dealloc_mw() */ | |
688 | ||
689 | /*----------------------------------------------------------------------*/ | |
690 | ||
691 | struct ib_fmr *ehca_alloc_fmr(struct ib_pd *pd, | |
692 | int mr_access_flags, | |
693 | struct ib_fmr_attr *fmr_attr) | |
694 | { | |
695 | struct ib_fmr *ib_fmr; | |
696 | struct ehca_shca *shca = | |
697 | container_of(pd->device, struct ehca_shca, ib_device); | |
698 | struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd); | |
699 | struct ehca_mr *e_fmr; | |
700 | int ret; | |
701 | u32 tmp_lkey, tmp_rkey; | |
702 | struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; | |
703 | ||
704 | /* check other parameters */ | |
705 | if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) && | |
706 | !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) || | |
707 | ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) && | |
708 | !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) { | |
709 | /* | |
710 | * Remote Write Access requires Local Write Access | |
711 | * Remote Atomic Access requires Local Write Access | |
712 | */ | |
713 | ehca_err(pd->device, "bad input values: mr_access_flags=%x", | |
714 | mr_access_flags); | |
715 | ib_fmr = ERR_PTR(-EINVAL); | |
716 | goto alloc_fmr_exit0; | |
717 | } | |
718 | if (mr_access_flags & IB_ACCESS_MW_BIND) { | |
719 | ehca_err(pd->device, "bad input values: mr_access_flags=%x", | |
720 | mr_access_flags); | |
721 | ib_fmr = ERR_PTR(-EINVAL); | |
722 | goto alloc_fmr_exit0; | |
723 | } | |
724 | if ((fmr_attr->max_pages == 0) || (fmr_attr->max_maps == 0)) { | |
725 | ehca_err(pd->device, "bad input values: fmr_attr->max_pages=%x " | |
726 | "fmr_attr->max_maps=%x fmr_attr->page_shift=%x", | |
727 | fmr_attr->max_pages, fmr_attr->max_maps, | |
728 | fmr_attr->page_shift); | |
729 | ib_fmr = ERR_PTR(-EINVAL); | |
730 | goto alloc_fmr_exit0; | |
731 | } | |
732 | if (((1 << fmr_attr->page_shift) != EHCA_PAGESIZE) && | |
733 | ((1 << fmr_attr->page_shift) != PAGE_SIZE)) { | |
734 | ehca_err(pd->device, "unsupported fmr_attr->page_shift=%x", | |
735 | fmr_attr->page_shift); | |
736 | ib_fmr = ERR_PTR(-EINVAL); | |
737 | goto alloc_fmr_exit0; | |
738 | } | |
739 | ||
740 | e_fmr = ehca_mr_new(); | |
741 | if (!e_fmr) { | |
742 | ib_fmr = ERR_PTR(-ENOMEM); | |
743 | goto alloc_fmr_exit0; | |
744 | } | |
745 | e_fmr->flags |= EHCA_MR_FLAG_FMR; | |
746 | ||
747 | /* register MR on HCA */ | |
748 | ret = ehca_reg_mr(shca, e_fmr, NULL, | |
749 | fmr_attr->max_pages * (1 << fmr_attr->page_shift), | |
750 | mr_access_flags, e_pd, &pginfo, | |
751 | &tmp_lkey, &tmp_rkey); | |
752 | if (ret) { | |
753 | ib_fmr = ERR_PTR(ret); | |
754 | goto alloc_fmr_exit1; | |
755 | } | |
756 | ||
757 | /* successful */ | |
758 | e_fmr->fmr_page_size = 1 << fmr_attr->page_shift; | |
759 | e_fmr->fmr_max_pages = fmr_attr->max_pages; | |
760 | e_fmr->fmr_max_maps = fmr_attr->max_maps; | |
761 | e_fmr->fmr_map_cnt = 0; | |
762 | return &e_fmr->ib.ib_fmr; | |
763 | ||
764 | alloc_fmr_exit1: | |
765 | ehca_mr_delete(e_fmr); | |
766 | alloc_fmr_exit0: | |
767 | if (IS_ERR(ib_fmr)) | |
768 | ehca_err(pd->device, "rc=%lx pd=%p mr_access_flags=%x " | |
769 | "fmr_attr=%p", PTR_ERR(ib_fmr), pd, | |
770 | mr_access_flags, fmr_attr); | |
771 | return ib_fmr; | |
772 | } /* end ehca_alloc_fmr() */ | |
773 | ||
774 | /*----------------------------------------------------------------------*/ | |
775 | ||
776 | int ehca_map_phys_fmr(struct ib_fmr *fmr, | |
777 | u64 *page_list, | |
778 | int list_len, | |
779 | u64 iova) | |
780 | { | |
781 | int ret; | |
782 | struct ehca_shca *shca = | |
783 | container_of(fmr->device, struct ehca_shca, ib_device); | |
784 | struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr); | |
785 | struct ehca_pd *e_pd = container_of(fmr->pd, struct ehca_pd, ib_pd); | |
786 | struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; | |
787 | u32 tmp_lkey, tmp_rkey; | |
788 | ||
789 | if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { | |
790 | ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x", | |
791 | e_fmr, e_fmr->flags); | |
792 | ret = -EINVAL; | |
793 | goto map_phys_fmr_exit0; | |
794 | } | |
795 | ret = ehca_fmr_check_page_list(e_fmr, page_list, list_len); | |
796 | if (ret) | |
797 | goto map_phys_fmr_exit0; | |
798 | if (iova % e_fmr->fmr_page_size) { | |
799 | /* only whole-numbered pages */ | |
800 | ehca_err(fmr->device, "bad iova, iova=%lx fmr_page_size=%x", | |
801 | iova, e_fmr->fmr_page_size); | |
802 | ret = -EINVAL; | |
803 | goto map_phys_fmr_exit0; | |
804 | } | |
805 | if (e_fmr->fmr_map_cnt >= e_fmr->fmr_max_maps) { | |
806 | /* HCAD does not limit the maps, however trace this anyway */ | |
807 | ehca_info(fmr->device, "map limit exceeded, fmr=%p " | |
808 | "e_fmr->fmr_map_cnt=%x e_fmr->fmr_max_maps=%x", | |
809 | fmr, e_fmr->fmr_map_cnt, e_fmr->fmr_max_maps); | |
810 | } | |
811 | ||
812 | pginfo.type = EHCA_MR_PGI_FMR; | |
813 | pginfo.num_pages = list_len; | |
814 | pginfo.num_4k = list_len * (e_fmr->fmr_page_size / EHCA_PAGESIZE); | |
815 | pginfo.page_list = page_list; | |
816 | pginfo.next_4k = ((iova & (e_fmr->fmr_page_size-1)) / | |
817 | EHCA_PAGESIZE); | |
818 | ||
819 | ret = ehca_rereg_mr(shca, e_fmr, (u64*)iova, | |
820 | list_len * e_fmr->fmr_page_size, | |
821 | e_fmr->acl, e_pd, &pginfo, &tmp_lkey, &tmp_rkey); | |
822 | if (ret) | |
823 | goto map_phys_fmr_exit0; | |
824 | ||
825 | /* successful reregistration */ | |
826 | e_fmr->fmr_map_cnt++; | |
827 | e_fmr->ib.ib_fmr.lkey = tmp_lkey; | |
828 | e_fmr->ib.ib_fmr.rkey = tmp_rkey; | |
829 | return 0; | |
830 | ||
831 | map_phys_fmr_exit0: | |
832 | if (ret) | |
833 | ehca_err(fmr->device, "ret=%x fmr=%p page_list=%p list_len=%x " | |
834 | "iova=%lx", | |
835 | ret, fmr, page_list, list_len, iova); | |
836 | return ret; | |
837 | } /* end ehca_map_phys_fmr() */ | |
838 | ||
839 | /*----------------------------------------------------------------------*/ | |
840 | ||
841 | int ehca_unmap_fmr(struct list_head *fmr_list) | |
842 | { | |
843 | int ret = 0; | |
844 | struct ib_fmr *ib_fmr; | |
845 | struct ehca_shca *shca = NULL; | |
846 | struct ehca_shca *prev_shca; | |
847 | struct ehca_mr *e_fmr; | |
848 | u32 num_fmr = 0; | |
849 | u32 unmap_fmr_cnt = 0; | |
850 | ||
851 | /* check all FMR belong to same SHCA, and check internal flag */ | |
852 | list_for_each_entry(ib_fmr, fmr_list, list) { | |
853 | prev_shca = shca; | |
854 | if (!ib_fmr) { | |
855 | ehca_gen_err("bad fmr=%p in list", ib_fmr); | |
856 | ret = -EINVAL; | |
857 | goto unmap_fmr_exit0; | |
858 | } | |
859 | shca = container_of(ib_fmr->device, struct ehca_shca, | |
860 | ib_device); | |
861 | e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr); | |
862 | if ((shca != prev_shca) && prev_shca) { | |
863 | ehca_err(&shca->ib_device, "SHCA mismatch, shca=%p " | |
864 | "prev_shca=%p e_fmr=%p", | |
865 | shca, prev_shca, e_fmr); | |
866 | ret = -EINVAL; | |
867 | goto unmap_fmr_exit0; | |
868 | } | |
869 | if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { | |
870 | ehca_err(&shca->ib_device, "not a FMR, e_fmr=%p " | |
871 | "e_fmr->flags=%x", e_fmr, e_fmr->flags); | |
872 | ret = -EINVAL; | |
873 | goto unmap_fmr_exit0; | |
874 | } | |
875 | num_fmr++; | |
876 | } | |
877 | ||
878 | /* loop over all FMRs to unmap */ | |
879 | list_for_each_entry(ib_fmr, fmr_list, list) { | |
880 | unmap_fmr_cnt++; | |
881 | e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr); | |
882 | shca = container_of(ib_fmr->device, struct ehca_shca, | |
883 | ib_device); | |
884 | ret = ehca_unmap_one_fmr(shca, e_fmr); | |
885 | if (ret) { | |
886 | /* unmap failed, stop unmapping of rest of FMRs */ | |
887 | ehca_err(&shca->ib_device, "unmap of one FMR failed, " | |
888 | "stop rest, e_fmr=%p num_fmr=%x " | |
889 | "unmap_fmr_cnt=%x lkey=%x", e_fmr, num_fmr, | |
890 | unmap_fmr_cnt, e_fmr->ib.ib_fmr.lkey); | |
891 | goto unmap_fmr_exit0; | |
892 | } | |
893 | } | |
894 | ||
895 | unmap_fmr_exit0: | |
896 | if (ret) | |
897 | ehca_gen_err("ret=%x fmr_list=%p num_fmr=%x unmap_fmr_cnt=%x", | |
898 | ret, fmr_list, num_fmr, unmap_fmr_cnt); | |
899 | return ret; | |
900 | } /* end ehca_unmap_fmr() */ | |
901 | ||
902 | /*----------------------------------------------------------------------*/ | |
903 | ||
904 | int ehca_dealloc_fmr(struct ib_fmr *fmr) | |
905 | { | |
906 | int ret; | |
907 | u64 h_ret; | |
908 | struct ehca_shca *shca = | |
909 | container_of(fmr->device, struct ehca_shca, ib_device); | |
910 | struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr); | |
911 | ||
912 | if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) { | |
913 | ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x", | |
914 | e_fmr, e_fmr->flags); | |
915 | ret = -EINVAL; | |
916 | goto free_fmr_exit0; | |
917 | } | |
918 | ||
919 | h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr); | |
920 | if (h_ret != H_SUCCESS) { | |
921 | ehca_err(fmr->device, "hipz_free_mr failed, h_ret=%lx e_fmr=%p " | |
922 | "hca_hndl=%lx fmr_hndl=%lx fmr->lkey=%x", | |
923 | h_ret, e_fmr, shca->ipz_hca_handle.handle, | |
924 | e_fmr->ipz_mr_handle.handle, fmr->lkey); | |
925 | ret = ehca_mrmw_map_hrc_free_mr(h_ret); | |
926 | goto free_fmr_exit0; | |
927 | } | |
928 | /* successful deregistration */ | |
929 | ehca_mr_delete(e_fmr); | |
930 | return 0; | |
931 | ||
932 | free_fmr_exit0: | |
933 | if (ret) | |
934 | ehca_err(&shca->ib_device, "ret=%x fmr=%p", ret, fmr); | |
935 | return ret; | |
936 | } /* end ehca_dealloc_fmr() */ | |
937 | ||
938 | /*----------------------------------------------------------------------*/ | |
939 | ||
940 | int ehca_reg_mr(struct ehca_shca *shca, | |
941 | struct ehca_mr *e_mr, | |
942 | u64 *iova_start, | |
943 | u64 size, | |
944 | int acl, | |
945 | struct ehca_pd *e_pd, | |
946 | struct ehca_mr_pginfo *pginfo, | |
947 | u32 *lkey, /*OUT*/ | |
948 | u32 *rkey) /*OUT*/ | |
949 | { | |
950 | int ret; | |
951 | u64 h_ret; | |
952 | u32 hipz_acl; | |
953 | struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; | |
954 | ||
955 | ehca_mrmw_map_acl(acl, &hipz_acl); | |
956 | ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl); | |
957 | if (ehca_use_hp_mr == 1) | |
958 | hipz_acl |= 0x00000001; | |
959 | ||
960 | h_ret = hipz_h_alloc_resource_mr(shca->ipz_hca_handle, e_mr, | |
961 | (u64)iova_start, size, hipz_acl, | |
962 | e_pd->fw_pd, &hipzout); | |
963 | if (h_ret != H_SUCCESS) { | |
964 | ehca_err(&shca->ib_device, "hipz_alloc_mr failed, h_ret=%lx " | |
965 | "hca_hndl=%lx", h_ret, shca->ipz_hca_handle.handle); | |
966 | ret = ehca_mrmw_map_hrc_alloc(h_ret); | |
967 | goto ehca_reg_mr_exit0; | |
968 | } | |
969 | ||
970 | e_mr->ipz_mr_handle = hipzout.handle; | |
971 | ||
972 | ret = ehca_reg_mr_rpages(shca, e_mr, pginfo); | |
973 | if (ret) | |
974 | goto ehca_reg_mr_exit1; | |
975 | ||
976 | /* successful registration */ | |
977 | e_mr->num_pages = pginfo->num_pages; | |
978 | e_mr->num_4k = pginfo->num_4k; | |
979 | e_mr->start = iova_start; | |
980 | e_mr->size = size; | |
981 | e_mr->acl = acl; | |
982 | *lkey = hipzout.lkey; | |
983 | *rkey = hipzout.rkey; | |
984 | return 0; | |
985 | ||
986 | ehca_reg_mr_exit1: | |
987 | h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); | |
988 | if (h_ret != H_SUCCESS) { | |
989 | ehca_err(&shca->ib_device, "h_ret=%lx shca=%p e_mr=%p " | |
990 | "iova_start=%p size=%lx acl=%x e_pd=%p lkey=%x " | |
991 | "pginfo=%p num_pages=%lx num_4k=%lx ret=%x", | |
992 | h_ret, shca, e_mr, iova_start, size, acl, e_pd, | |
993 | hipzout.lkey, pginfo, pginfo->num_pages, | |
994 | pginfo->num_4k, ret); | |
995 | ehca_err(&shca->ib_device, "internal error in ehca_reg_mr, " | |
996 | "not recoverable"); | |
997 | } | |
998 | ehca_reg_mr_exit0: | |
999 | if (ret) | |
1000 | ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p " | |
1001 | "iova_start=%p size=%lx acl=%x e_pd=%p pginfo=%p " | |
1002 | "num_pages=%lx num_4k=%lx", | |
1003 | ret, shca, e_mr, iova_start, size, acl, e_pd, pginfo, | |
1004 | pginfo->num_pages, pginfo->num_4k); | |
1005 | return ret; | |
1006 | } /* end ehca_reg_mr() */ | |
1007 | ||
1008 | /*----------------------------------------------------------------------*/ | |
1009 | ||
1010 | int ehca_reg_mr_rpages(struct ehca_shca *shca, | |
1011 | struct ehca_mr *e_mr, | |
1012 | struct ehca_mr_pginfo *pginfo) | |
1013 | { | |
1014 | int ret = 0; | |
1015 | u64 h_ret; | |
1016 | u32 rnum; | |
1017 | u64 rpage; | |
1018 | u32 i; | |
1019 | u64 *kpage; | |
1020 | ||
f2d91361 | 1021 | kpage = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
1022 | if (!kpage) { |
1023 | ehca_err(&shca->ib_device, "kpage alloc failed"); | |
1024 | ret = -ENOMEM; | |
1025 | goto ehca_reg_mr_rpages_exit0; | |
1026 | } | |
1027 | ||
1028 | /* max 512 pages per shot */ | |
1029 | for (i = 0; i < ((pginfo->num_4k + 512 - 1) / 512); i++) { | |
1030 | ||
1031 | if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) { | |
1032 | rnum = pginfo->num_4k % 512; /* last shot */ | |
1033 | if (rnum == 0) | |
1034 | rnum = 512; /* last shot is full */ | |
1035 | } else | |
1036 | rnum = 512; | |
1037 | ||
1038 | if (rnum > 1) { | |
1039 | ret = ehca_set_pagebuf(e_mr, pginfo, rnum, kpage); | |
1040 | if (ret) { | |
1041 | ehca_err(&shca->ib_device, "ehca_set_pagebuf " | |
1042 | "bad rc, ret=%x rnum=%x kpage=%p", | |
1043 | ret, rnum, kpage); | |
1044 | ret = -EFAULT; | |
1045 | goto ehca_reg_mr_rpages_exit1; | |
1046 | } | |
1047 | rpage = virt_to_abs(kpage); | |
1048 | if (!rpage) { | |
1049 | ehca_err(&shca->ib_device, "kpage=%p i=%x", | |
1050 | kpage, i); | |
1051 | ret = -EFAULT; | |
1052 | goto ehca_reg_mr_rpages_exit1; | |
1053 | } | |
1054 | } else { /* rnum==1 */ | |
1055 | ret = ehca_set_pagebuf_1(e_mr, pginfo, &rpage); | |
1056 | if (ret) { | |
1057 | ehca_err(&shca->ib_device, "ehca_set_pagebuf_1 " | |
1058 | "bad rc, ret=%x i=%x", ret, i); | |
1059 | ret = -EFAULT; | |
1060 | goto ehca_reg_mr_rpages_exit1; | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | h_ret = hipz_h_register_rpage_mr(shca->ipz_hca_handle, e_mr, | |
1065 | 0, /* pagesize 4k */ | |
1066 | 0, rpage, rnum); | |
1067 | ||
1068 | if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) { | |
1069 | /* | |
1070 | * check for 'registration complete'==H_SUCCESS | |
1071 | * and for 'page registered'==H_PAGE_REGISTERED | |
1072 | */ | |
1073 | if (h_ret != H_SUCCESS) { | |
1074 | ehca_err(&shca->ib_device, "last " | |
1075 | "hipz_reg_rpage_mr failed, h_ret=%lx " | |
1076 | "e_mr=%p i=%x hca_hndl=%lx mr_hndl=%lx" | |
1077 | " lkey=%x", h_ret, e_mr, i, | |
1078 | shca->ipz_hca_handle.handle, | |
1079 | e_mr->ipz_mr_handle.handle, | |
1080 | e_mr->ib.ib_mr.lkey); | |
1081 | ret = ehca_mrmw_map_hrc_rrpg_last(h_ret); | |
1082 | break; | |
1083 | } else | |
1084 | ret = 0; | |
1085 | } else if (h_ret != H_PAGE_REGISTERED) { | |
1086 | ehca_err(&shca->ib_device, "hipz_reg_rpage_mr failed, " | |
1087 | "h_ret=%lx e_mr=%p i=%x lkey=%x hca_hndl=%lx " | |
1088 | "mr_hndl=%lx", h_ret, e_mr, i, | |
1089 | e_mr->ib.ib_mr.lkey, | |
1090 | shca->ipz_hca_handle.handle, | |
1091 | e_mr->ipz_mr_handle.handle); | |
1092 | ret = ehca_mrmw_map_hrc_rrpg_notlast(h_ret); | |
1093 | break; | |
1094 | } else | |
1095 | ret = 0; | |
1096 | } /* end for(i) */ | |
1097 | ||
1098 | ||
1099 | ehca_reg_mr_rpages_exit1: | |
7e28db5d | 1100 | ehca_free_fw_ctrlblock(kpage); |
fab97220 HS |
1101 | ehca_reg_mr_rpages_exit0: |
1102 | if (ret) | |
1103 | ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p pginfo=%p " | |
1104 | "num_pages=%lx num_4k=%lx", ret, shca, e_mr, pginfo, | |
1105 | pginfo->num_pages, pginfo->num_4k); | |
1106 | return ret; | |
1107 | } /* end ehca_reg_mr_rpages() */ | |
1108 | ||
1109 | /*----------------------------------------------------------------------*/ | |
1110 | ||
1111 | inline int ehca_rereg_mr_rereg1(struct ehca_shca *shca, | |
1112 | struct ehca_mr *e_mr, | |
1113 | u64 *iova_start, | |
1114 | u64 size, | |
1115 | u32 acl, | |
1116 | struct ehca_pd *e_pd, | |
1117 | struct ehca_mr_pginfo *pginfo, | |
1118 | u32 *lkey, /*OUT*/ | |
1119 | u32 *rkey) /*OUT*/ | |
1120 | { | |
1121 | int ret; | |
1122 | u64 h_ret; | |
1123 | u32 hipz_acl; | |
1124 | u64 *kpage; | |
1125 | u64 rpage; | |
1126 | struct ehca_mr_pginfo pginfo_save; | |
1127 | struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; | |
1128 | ||
1129 | ehca_mrmw_map_acl(acl, &hipz_acl); | |
1130 | ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl); | |
1131 | ||
f2d91361 | 1132 | kpage = ehca_alloc_fw_ctrlblock(GFP_KERNEL); |
fab97220 HS |
1133 | if (!kpage) { |
1134 | ehca_err(&shca->ib_device, "kpage alloc failed"); | |
1135 | ret = -ENOMEM; | |
1136 | goto ehca_rereg_mr_rereg1_exit0; | |
1137 | } | |
1138 | ||
1139 | pginfo_save = *pginfo; | |
1140 | ret = ehca_set_pagebuf(e_mr, pginfo, pginfo->num_4k, kpage); | |
1141 | if (ret) { | |
1142 | ehca_err(&shca->ib_device, "set pagebuf failed, e_mr=%p " | |
1143 | "pginfo=%p type=%x num_pages=%lx num_4k=%lx kpage=%p", | |
1144 | e_mr, pginfo, pginfo->type, pginfo->num_pages, | |
1145 | pginfo->num_4k,kpage); | |
1146 | goto ehca_rereg_mr_rereg1_exit1; | |
1147 | } | |
1148 | rpage = virt_to_abs(kpage); | |
1149 | if (!rpage) { | |
1150 | ehca_err(&shca->ib_device, "kpage=%p", kpage); | |
1151 | ret = -EFAULT; | |
1152 | goto ehca_rereg_mr_rereg1_exit1; | |
1153 | } | |
1154 | h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_mr, | |
1155 | (u64)iova_start, size, hipz_acl, | |
1156 | e_pd->fw_pd, rpage, &hipzout); | |
1157 | if (h_ret != H_SUCCESS) { | |
1158 | /* | |
1159 | * reregistration unsuccessful, try it again with the 3 hCalls, | |
1160 | * e.g. this is required in case H_MR_CONDITION | |
1161 | * (MW bound or MR is shared) | |
1162 | */ | |
1163 | ehca_warn(&shca->ib_device, "hipz_h_reregister_pmr failed " | |
1164 | "(Rereg1), h_ret=%lx e_mr=%p", h_ret, e_mr); | |
1165 | *pginfo = pginfo_save; | |
1166 | ret = -EAGAIN; | |
1167 | } else if ((u64*)hipzout.vaddr != iova_start) { | |
1168 | ehca_err(&shca->ib_device, "PHYP changed iova_start in " | |
1169 | "rereg_pmr, iova_start=%p iova_start_out=%lx e_mr=%p " | |
1170 | "mr_handle=%lx lkey=%x lkey_out=%x", iova_start, | |
1171 | hipzout.vaddr, e_mr, e_mr->ipz_mr_handle.handle, | |
1172 | e_mr->ib.ib_mr.lkey, hipzout.lkey); | |
1173 | ret = -EFAULT; | |
1174 | } else { | |
1175 | /* | |
1176 | * successful reregistration | |
1177 | * note: start and start_out are identical for eServer HCAs | |
1178 | */ | |
1179 | e_mr->num_pages = pginfo->num_pages; | |
1180 | e_mr->num_4k = pginfo->num_4k; | |
1181 | e_mr->start = iova_start; | |
1182 | e_mr->size = size; | |
1183 | e_mr->acl = acl; | |
1184 | *lkey = hipzout.lkey; | |
1185 | *rkey = hipzout.rkey; | |
1186 | } | |
1187 | ||
1188 | ehca_rereg_mr_rereg1_exit1: | |
7e28db5d | 1189 | ehca_free_fw_ctrlblock(kpage); |
fab97220 HS |
1190 | ehca_rereg_mr_rereg1_exit0: |
1191 | if ( ret && (ret != -EAGAIN) ) | |
1192 | ehca_err(&shca->ib_device, "ret=%x lkey=%x rkey=%x " | |
1193 | "pginfo=%p num_pages=%lx num_4k=%lx", | |
1194 | ret, *lkey, *rkey, pginfo, pginfo->num_pages, | |
1195 | pginfo->num_4k); | |
1196 | return ret; | |
1197 | } /* end ehca_rereg_mr_rereg1() */ | |
1198 | ||
1199 | /*----------------------------------------------------------------------*/ | |
1200 | ||
1201 | int ehca_rereg_mr(struct ehca_shca *shca, | |
1202 | struct ehca_mr *e_mr, | |
1203 | u64 *iova_start, | |
1204 | u64 size, | |
1205 | int acl, | |
1206 | struct ehca_pd *e_pd, | |
1207 | struct ehca_mr_pginfo *pginfo, | |
1208 | u32 *lkey, | |
1209 | u32 *rkey) | |
1210 | { | |
1211 | int ret = 0; | |
1212 | u64 h_ret; | |
1213 | int rereg_1_hcall = 1; /* 1: use hipz_h_reregister_pmr directly */ | |
1214 | int rereg_3_hcall = 0; /* 1: use 3 hipz calls for reregistration */ | |
1215 | ||
1216 | /* first determine reregistration hCall(s) */ | |
1217 | if ((pginfo->num_4k > 512) || (e_mr->num_4k > 512) || | |
1218 | (pginfo->num_4k > e_mr->num_4k)) { | |
1219 | ehca_dbg(&shca->ib_device, "Rereg3 case, pginfo->num_4k=%lx " | |
1220 | "e_mr->num_4k=%x", pginfo->num_4k, e_mr->num_4k); | |
1221 | rereg_1_hcall = 0; | |
1222 | rereg_3_hcall = 1; | |
1223 | } | |
1224 | ||
1225 | if (e_mr->flags & EHCA_MR_FLAG_MAXMR) { /* check for max-MR */ | |
1226 | rereg_1_hcall = 0; | |
1227 | rereg_3_hcall = 1; | |
1228 | e_mr->flags &= ~EHCA_MR_FLAG_MAXMR; | |
1229 | ehca_err(&shca->ib_device, "Rereg MR for max-MR! e_mr=%p", | |
1230 | e_mr); | |
1231 | } | |
1232 | ||
1233 | if (rereg_1_hcall) { | |
1234 | ret = ehca_rereg_mr_rereg1(shca, e_mr, iova_start, size, | |
1235 | acl, e_pd, pginfo, lkey, rkey); | |
1236 | if (ret) { | |
1237 | if (ret == -EAGAIN) | |
1238 | rereg_3_hcall = 1; | |
1239 | else | |
1240 | goto ehca_rereg_mr_exit0; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | if (rereg_3_hcall) { | |
1245 | struct ehca_mr save_mr; | |
1246 | ||
1247 | /* first deregister old MR */ | |
1248 | h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr); | |
1249 | if (h_ret != H_SUCCESS) { | |
1250 | ehca_err(&shca->ib_device, "hipz_free_mr failed, " | |
1251 | "h_ret=%lx e_mr=%p hca_hndl=%lx mr_hndl=%lx " | |
1252 | "mr->lkey=%x", | |
1253 | h_ret, e_mr, shca->ipz_hca_handle.handle, | |
1254 | e_mr->ipz_mr_handle.handle, | |
1255 | e_mr->ib.ib_mr.lkey); | |
1256 | ret = ehca_mrmw_map_hrc_free_mr(h_ret); | |
1257 | goto ehca_rereg_mr_exit0; | |
1258 | } | |
1259 | /* clean ehca_mr_t, without changing struct ib_mr and lock */ | |
1260 | save_mr = *e_mr; | |
1261 | ehca_mr_deletenew(e_mr); | |
1262 | ||
1263 | /* set some MR values */ | |
1264 | e_mr->flags = save_mr.flags; | |
1265 | e_mr->fmr_page_size = save_mr.fmr_page_size; | |
1266 | e_mr->fmr_max_pages = save_mr.fmr_max_pages; | |
1267 | e_mr->fmr_max_maps = save_mr.fmr_max_maps; | |
1268 | e_mr->fmr_map_cnt = save_mr.fmr_map_cnt; | |
1269 | ||
1270 | ret = ehca_reg_mr(shca, e_mr, iova_start, size, acl, | |
1271 | e_pd, pginfo, lkey, rkey); | |
1272 | if (ret) { | |
1273 | u32 offset = (u64)(&e_mr->flags) - (u64)e_mr; | |
1274 | memcpy(&e_mr->flags, &(save_mr.flags), | |
1275 | sizeof(struct ehca_mr) - offset); | |
1276 | goto ehca_rereg_mr_exit0; | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | ehca_rereg_mr_exit0: | |
1281 | if (ret) | |
1282 | ehca_err(&shca->ib_device, "ret=%x shca=%p e_mr=%p " | |
1283 | "iova_start=%p size=%lx acl=%x e_pd=%p pginfo=%p " | |
1284 | "num_pages=%lx lkey=%x rkey=%x rereg_1_hcall=%x " | |
1285 | "rereg_3_hcall=%x", ret, shca, e_mr, iova_start, size, | |
1286 | acl, e_pd, pginfo, pginfo->num_pages, *lkey, *rkey, | |
1287 | rereg_1_hcall, rereg_3_hcall); | |
1288 | return ret; | |
1289 | } /* end ehca_rereg_mr() */ | |
1290 | ||
1291 | /*----------------------------------------------------------------------*/ | |
1292 | ||
1293 | int ehca_unmap_one_fmr(struct ehca_shca *shca, | |
1294 | struct ehca_mr *e_fmr) | |
1295 | { | |
1296 | int ret = 0; | |
1297 | u64 h_ret; | |
1298 | int rereg_1_hcall = 1; /* 1: use hipz_mr_reregister directly */ | |
1299 | int rereg_3_hcall = 0; /* 1: use 3 hipz calls for unmapping */ | |
1300 | struct ehca_pd *e_pd = | |
1301 | container_of(e_fmr->ib.ib_fmr.pd, struct ehca_pd, ib_pd); | |
1302 | struct ehca_mr save_fmr; | |
1303 | u32 tmp_lkey, tmp_rkey; | |
1304 | struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; | |
1305 | struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; | |
1306 | ||
1307 | /* first check if reregistration hCall can be used for unmap */ | |
1308 | if (e_fmr->fmr_max_pages > 512) { | |
1309 | rereg_1_hcall = 0; | |
1310 | rereg_3_hcall = 1; | |
1311 | } | |
1312 | ||
1313 | if (rereg_1_hcall) { | |
1314 | /* | |
1315 | * note: after using rereg hcall with len=0, | |
1316 | * rereg hcall must be used again for registering pages | |
1317 | */ | |
1318 | h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_fmr, 0, | |
1319 | 0, 0, e_pd->fw_pd, 0, &hipzout); | |
1320 | if (h_ret != H_SUCCESS) { | |
1321 | /* | |
1322 | * should not happen, because length checked above, | |
1323 | * FMRs are not shared and no MW bound to FMRs | |
1324 | */ | |
1325 | ehca_err(&shca->ib_device, "hipz_reregister_pmr failed " | |
1326 | "(Rereg1), h_ret=%lx e_fmr=%p hca_hndl=%lx " | |
1327 | "mr_hndl=%lx lkey=%x lkey_out=%x", | |
1328 | h_ret, e_fmr, shca->ipz_hca_handle.handle, | |
1329 | e_fmr->ipz_mr_handle.handle, | |
1330 | e_fmr->ib.ib_fmr.lkey, hipzout.lkey); | |
1331 | rereg_3_hcall = 1; | |
1332 | } else { | |
1333 | /* successful reregistration */ | |
1334 | e_fmr->start = NULL; | |
1335 | e_fmr->size = 0; | |
1336 | tmp_lkey = hipzout.lkey; | |
1337 | tmp_rkey = hipzout.rkey; | |
1338 | } | |
1339 | } | |
1340 | ||
1341 | if (rereg_3_hcall) { | |
1342 | struct ehca_mr save_mr; | |
1343 | ||
1344 | /* first free old FMR */ | |
1345 | h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr); | |
1346 | if (h_ret != H_SUCCESS) { | |
1347 | ehca_err(&shca->ib_device, "hipz_free_mr failed, " | |
1348 | "h_ret=%lx e_fmr=%p hca_hndl=%lx mr_hndl=%lx " | |
1349 | "lkey=%x", | |
1350 | h_ret, e_fmr, shca->ipz_hca_handle.handle, | |
1351 | e_fmr->ipz_mr_handle.handle, | |
1352 | e_fmr->ib.ib_fmr.lkey); | |
1353 | ret = ehca_mrmw_map_hrc_free_mr(h_ret); | |
1354 | goto ehca_unmap_one_fmr_exit0; | |
1355 | } | |
1356 | /* clean ehca_mr_t, without changing lock */ | |
1357 | save_fmr = *e_fmr; | |
1358 | ehca_mr_deletenew(e_fmr); | |
1359 | ||
1360 | /* set some MR values */ | |
1361 | e_fmr->flags = save_fmr.flags; | |
1362 | e_fmr->fmr_page_size = save_fmr.fmr_page_size; | |
1363 | e_fmr->fmr_max_pages = save_fmr.fmr_max_pages; | |
1364 | e_fmr->fmr_max_maps = save_fmr.fmr_max_maps; | |
1365 | e_fmr->fmr_map_cnt = save_fmr.fmr_map_cnt; | |
1366 | e_fmr->acl = save_fmr.acl; | |
1367 | ||
1368 | pginfo.type = EHCA_MR_PGI_FMR; | |
1369 | pginfo.num_pages = 0; | |
1370 | pginfo.num_4k = 0; | |
1371 | ret = ehca_reg_mr(shca, e_fmr, NULL, | |
1372 | (e_fmr->fmr_max_pages * e_fmr->fmr_page_size), | |
1373 | e_fmr->acl, e_pd, &pginfo, &tmp_lkey, | |
1374 | &tmp_rkey); | |
1375 | if (ret) { | |
1376 | u32 offset = (u64)(&e_fmr->flags) - (u64)e_fmr; | |
1377 | memcpy(&e_fmr->flags, &(save_mr.flags), | |
1378 | sizeof(struct ehca_mr) - offset); | |
1379 | goto ehca_unmap_one_fmr_exit0; | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | ehca_unmap_one_fmr_exit0: | |
1384 | if (ret) | |
1385 | ehca_err(&shca->ib_device, "ret=%x tmp_lkey=%x tmp_rkey=%x " | |
1386 | "fmr_max_pages=%x rereg_1_hcall=%x rereg_3_hcall=%x", | |
1387 | ret, tmp_lkey, tmp_rkey, e_fmr->fmr_max_pages, | |
1388 | rereg_1_hcall, rereg_3_hcall); | |
1389 | return ret; | |
1390 | } /* end ehca_unmap_one_fmr() */ | |
1391 | ||
1392 | /*----------------------------------------------------------------------*/ | |
1393 | ||
1394 | int ehca_reg_smr(struct ehca_shca *shca, | |
1395 | struct ehca_mr *e_origmr, | |
1396 | struct ehca_mr *e_newmr, | |
1397 | u64 *iova_start, | |
1398 | int acl, | |
1399 | struct ehca_pd *e_pd, | |
1400 | u32 *lkey, /*OUT*/ | |
1401 | u32 *rkey) /*OUT*/ | |
1402 | { | |
1403 | int ret = 0; | |
1404 | u64 h_ret; | |
1405 | u32 hipz_acl; | |
1406 | struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; | |
1407 | ||
1408 | ehca_mrmw_map_acl(acl, &hipz_acl); | |
1409 | ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl); | |
1410 | ||
1411 | h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr, | |
1412 | (u64)iova_start, hipz_acl, e_pd->fw_pd, | |
1413 | &hipzout); | |
1414 | if (h_ret != H_SUCCESS) { | |
1415 | ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lx " | |
1416 | "shca=%p e_origmr=%p e_newmr=%p iova_start=%p acl=%x " | |
1417 | "e_pd=%p hca_hndl=%lx mr_hndl=%lx lkey=%x", | |
1418 | h_ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd, | |
1419 | shca->ipz_hca_handle.handle, | |
1420 | e_origmr->ipz_mr_handle.handle, | |
1421 | e_origmr->ib.ib_mr.lkey); | |
1422 | ret = ehca_mrmw_map_hrc_reg_smr(h_ret); | |
1423 | goto ehca_reg_smr_exit0; | |
1424 | } | |
1425 | /* successful registration */ | |
1426 | e_newmr->num_pages = e_origmr->num_pages; | |
1427 | e_newmr->num_4k = e_origmr->num_4k; | |
1428 | e_newmr->start = iova_start; | |
1429 | e_newmr->size = e_origmr->size; | |
1430 | e_newmr->acl = acl; | |
1431 | e_newmr->ipz_mr_handle = hipzout.handle; | |
1432 | *lkey = hipzout.lkey; | |
1433 | *rkey = hipzout.rkey; | |
1434 | return 0; | |
1435 | ||
1436 | ehca_reg_smr_exit0: | |
1437 | if (ret) | |
1438 | ehca_err(&shca->ib_device, "ret=%x shca=%p e_origmr=%p " | |
1439 | "e_newmr=%p iova_start=%p acl=%x e_pd=%p", | |
1440 | ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd); | |
1441 | return ret; | |
1442 | } /* end ehca_reg_smr() */ | |
1443 | ||
1444 | /*----------------------------------------------------------------------*/ | |
1445 | ||
1446 | /* register internal max-MR to internal SHCA */ | |
1447 | int ehca_reg_internal_maxmr( | |
1448 | struct ehca_shca *shca, | |
1449 | struct ehca_pd *e_pd, | |
1450 | struct ehca_mr **e_maxmr) /*OUT*/ | |
1451 | { | |
1452 | int ret; | |
1453 | struct ehca_mr *e_mr; | |
1454 | u64 *iova_start; | |
1455 | u64 size_maxmr; | |
1456 | struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0}; | |
1457 | struct ib_phys_buf ib_pbuf; | |
1458 | u32 num_pages_mr; | |
1459 | u32 num_pages_4k; /* 4k portion "pages" */ | |
1460 | ||
1461 | e_mr = ehca_mr_new(); | |
1462 | if (!e_mr) { | |
1463 | ehca_err(&shca->ib_device, "out of memory"); | |
1464 | ret = -ENOMEM; | |
1465 | goto ehca_reg_internal_maxmr_exit0; | |
1466 | } | |
1467 | e_mr->flags |= EHCA_MR_FLAG_MAXMR; | |
1468 | ||
1469 | /* register internal max-MR on HCA */ | |
1470 | size_maxmr = (u64)high_memory - PAGE_OFFSET; | |
1471 | iova_start = (u64*)KERNELBASE; | |
1472 | ib_pbuf.addr = 0; | |
1473 | ib_pbuf.size = size_maxmr; | |
1474 | num_pages_mr = ((((u64)iova_start % PAGE_SIZE) + size_maxmr + | |
1475 | PAGE_SIZE - 1) / PAGE_SIZE); | |
1476 | num_pages_4k = ((((u64)iova_start % EHCA_PAGESIZE) + size_maxmr + | |
1477 | EHCA_PAGESIZE - 1) / EHCA_PAGESIZE); | |
1478 | ||
1479 | pginfo.type = EHCA_MR_PGI_PHYS; | |
1480 | pginfo.num_pages = num_pages_mr; | |
1481 | pginfo.num_4k = num_pages_4k; | |
1482 | pginfo.num_phys_buf = 1; | |
1483 | pginfo.phys_buf_array = &ib_pbuf; | |
1484 | ||
1485 | ret = ehca_reg_mr(shca, e_mr, iova_start, size_maxmr, 0, e_pd, | |
1486 | &pginfo, &e_mr->ib.ib_mr.lkey, | |
1487 | &e_mr->ib.ib_mr.rkey); | |
1488 | if (ret) { | |
1489 | ehca_err(&shca->ib_device, "reg of internal max MR failed, " | |
1490 | "e_mr=%p iova_start=%p size_maxmr=%lx num_pages_mr=%x " | |
1491 | "num_pages_4k=%x", e_mr, iova_start, size_maxmr, | |
1492 | num_pages_mr, num_pages_4k); | |
1493 | goto ehca_reg_internal_maxmr_exit1; | |
1494 | } | |
1495 | ||
1496 | /* successful registration of all pages */ | |
1497 | e_mr->ib.ib_mr.device = e_pd->ib_pd.device; | |
1498 | e_mr->ib.ib_mr.pd = &e_pd->ib_pd; | |
1499 | e_mr->ib.ib_mr.uobject = NULL; | |
1500 | atomic_inc(&(e_pd->ib_pd.usecnt)); | |
1501 | atomic_set(&(e_mr->ib.ib_mr.usecnt), 0); | |
1502 | *e_maxmr = e_mr; | |
1503 | return 0; | |
1504 | ||
1505 | ehca_reg_internal_maxmr_exit1: | |
1506 | ehca_mr_delete(e_mr); | |
1507 | ehca_reg_internal_maxmr_exit0: | |
1508 | if (ret) | |
1509 | ehca_err(&shca->ib_device, "ret=%x shca=%p e_pd=%p e_maxmr=%p", | |
1510 | ret, shca, e_pd, e_maxmr); | |
1511 | return ret; | |
1512 | } /* end ehca_reg_internal_maxmr() */ | |
1513 | ||
1514 | /*----------------------------------------------------------------------*/ | |
1515 | ||
1516 | int ehca_reg_maxmr(struct ehca_shca *shca, | |
1517 | struct ehca_mr *e_newmr, | |
1518 | u64 *iova_start, | |
1519 | int acl, | |
1520 | struct ehca_pd *e_pd, | |
1521 | u32 *lkey, | |
1522 | u32 *rkey) | |
1523 | { | |
1524 | u64 h_ret; | |
1525 | struct ehca_mr *e_origmr = shca->maxmr; | |
1526 | u32 hipz_acl; | |
1527 | struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; | |
1528 | ||
1529 | ehca_mrmw_map_acl(acl, &hipz_acl); | |
1530 | ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl); | |
1531 | ||
1532 | h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr, | |
1533 | (u64)iova_start, hipz_acl, e_pd->fw_pd, | |
1534 | &hipzout); | |
1535 | if (h_ret != H_SUCCESS) { | |
1536 | ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lx " | |
1537 | "e_origmr=%p hca_hndl=%lx mr_hndl=%lx lkey=%x", | |
1538 | h_ret, e_origmr, shca->ipz_hca_handle.handle, | |
1539 | e_origmr->ipz_mr_handle.handle, | |
1540 | e_origmr->ib.ib_mr.lkey); | |
1541 | return ehca_mrmw_map_hrc_reg_smr(h_ret); | |
1542 | } | |
1543 | /* successful registration */ | |
1544 | e_newmr->num_pages = e_origmr->num_pages; | |
1545 | e_newmr->num_4k = e_origmr->num_4k; | |
1546 | e_newmr->start = iova_start; | |
1547 | e_newmr->size = e_origmr->size; | |
1548 | e_newmr->acl = acl; | |
1549 | e_newmr->ipz_mr_handle = hipzout.handle; | |
1550 | *lkey = hipzout.lkey; | |
1551 | *rkey = hipzout.rkey; | |
1552 | return 0; | |
1553 | } /* end ehca_reg_maxmr() */ | |
1554 | ||
1555 | /*----------------------------------------------------------------------*/ | |
1556 | ||
1557 | int ehca_dereg_internal_maxmr(struct ehca_shca *shca) | |
1558 | { | |
1559 | int ret; | |
1560 | struct ehca_mr *e_maxmr; | |
1561 | struct ib_pd *ib_pd; | |
1562 | ||
1563 | if (!shca->maxmr) { | |
1564 | ehca_err(&shca->ib_device, "bad call, shca=%p", shca); | |
1565 | ret = -EINVAL; | |
1566 | goto ehca_dereg_internal_maxmr_exit0; | |
1567 | } | |
1568 | ||
1569 | e_maxmr = shca->maxmr; | |
1570 | ib_pd = e_maxmr->ib.ib_mr.pd; | |
1571 | shca->maxmr = NULL; /* remove internal max-MR indication from SHCA */ | |
1572 | ||
1573 | ret = ehca_dereg_mr(&e_maxmr->ib.ib_mr); | |
1574 | if (ret) { | |
1575 | ehca_err(&shca->ib_device, "dereg internal max-MR failed, " | |
1576 | "ret=%x e_maxmr=%p shca=%p lkey=%x", | |
1577 | ret, e_maxmr, shca, e_maxmr->ib.ib_mr.lkey); | |
1578 | shca->maxmr = e_maxmr; | |
1579 | goto ehca_dereg_internal_maxmr_exit0; | |
1580 | } | |
1581 | ||
1582 | atomic_dec(&ib_pd->usecnt); | |
1583 | ||
1584 | ehca_dereg_internal_maxmr_exit0: | |
1585 | if (ret) | |
1586 | ehca_err(&shca->ib_device, "ret=%x shca=%p shca->maxmr=%p", | |
1587 | ret, shca, shca->maxmr); | |
1588 | return ret; | |
1589 | } /* end ehca_dereg_internal_maxmr() */ | |
1590 | ||
1591 | /*----------------------------------------------------------------------*/ | |
1592 | ||
1593 | /* | |
1594 | * check physical buffer array of MR verbs for validness and | |
1595 | * calculates MR size | |
1596 | */ | |
1597 | int ehca_mr_chk_buf_and_calc_size(struct ib_phys_buf *phys_buf_array, | |
1598 | int num_phys_buf, | |
1599 | u64 *iova_start, | |
1600 | u64 *size) | |
1601 | { | |
1602 | struct ib_phys_buf *pbuf = phys_buf_array; | |
1603 | u64 size_count = 0; | |
1604 | u32 i; | |
1605 | ||
1606 | if (num_phys_buf == 0) { | |
1607 | ehca_gen_err("bad phys buf array len, num_phys_buf=0"); | |
1608 | return -EINVAL; | |
1609 | } | |
1610 | /* check first buffer */ | |
1611 | if (((u64)iova_start & ~PAGE_MASK) != (pbuf->addr & ~PAGE_MASK)) { | |
1612 | ehca_gen_err("iova_start/addr mismatch, iova_start=%p " | |
1613 | "pbuf->addr=%lx pbuf->size=%lx", | |
1614 | iova_start, pbuf->addr, pbuf->size); | |
1615 | return -EINVAL; | |
1616 | } | |
1617 | if (((pbuf->addr + pbuf->size) % PAGE_SIZE) && | |
1618 | (num_phys_buf > 1)) { | |
1619 | ehca_gen_err("addr/size mismatch in 1st buf, pbuf->addr=%lx " | |
1620 | "pbuf->size=%lx", pbuf->addr, pbuf->size); | |
1621 | return -EINVAL; | |
1622 | } | |
1623 | ||
1624 | for (i = 0; i < num_phys_buf; i++) { | |
1625 | if ((i > 0) && (pbuf->addr % PAGE_SIZE)) { | |
1626 | ehca_gen_err("bad address, i=%x pbuf->addr=%lx " | |
1627 | "pbuf->size=%lx", | |
1628 | i, pbuf->addr, pbuf->size); | |
1629 | return -EINVAL; | |
1630 | } | |
1631 | if (((i > 0) && /* not 1st */ | |
1632 | (i < (num_phys_buf - 1)) && /* not last */ | |
1633 | (pbuf->size % PAGE_SIZE)) || (pbuf->size == 0)) { | |
1634 | ehca_gen_err("bad size, i=%x pbuf->size=%lx", | |
1635 | i, pbuf->size); | |
1636 | return -EINVAL; | |
1637 | } | |
1638 | size_count += pbuf->size; | |
1639 | pbuf++; | |
1640 | } | |
1641 | ||
1642 | *size = size_count; | |
1643 | return 0; | |
1644 | } /* end ehca_mr_chk_buf_and_calc_size() */ | |
1645 | ||
1646 | /*----------------------------------------------------------------------*/ | |
1647 | ||
1648 | /* check page list of map FMR verb for validness */ | |
1649 | int ehca_fmr_check_page_list(struct ehca_mr *e_fmr, | |
1650 | u64 *page_list, | |
1651 | int list_len) | |
1652 | { | |
1653 | u32 i; | |
1654 | u64 *page; | |
1655 | ||
1656 | if ((list_len == 0) || (list_len > e_fmr->fmr_max_pages)) { | |
1657 | ehca_gen_err("bad list_len, list_len=%x " | |
1658 | "e_fmr->fmr_max_pages=%x fmr=%p", | |
1659 | list_len, e_fmr->fmr_max_pages, e_fmr); | |
1660 | return -EINVAL; | |
1661 | } | |
1662 | ||
1663 | /* each page must be aligned */ | |
1664 | page = page_list; | |
1665 | for (i = 0; i < list_len; i++) { | |
1666 | if (*page % e_fmr->fmr_page_size) { | |
1667 | ehca_gen_err("bad page, i=%x *page=%lx page=%p fmr=%p " | |
1668 | "fmr_page_size=%x", i, *page, page, e_fmr, | |
1669 | e_fmr->fmr_page_size); | |
1670 | return -EINVAL; | |
1671 | } | |
1672 | page++; | |
1673 | } | |
1674 | ||
1675 | return 0; | |
1676 | } /* end ehca_fmr_check_page_list() */ | |
1677 | ||
1678 | /*----------------------------------------------------------------------*/ | |
1679 | ||
1680 | /* setup page buffer from page info */ | |
1681 | int ehca_set_pagebuf(struct ehca_mr *e_mr, | |
1682 | struct ehca_mr_pginfo *pginfo, | |
1683 | u32 number, | |
1684 | u64 *kpage) | |
1685 | { | |
1686 | int ret = 0; | |
1687 | struct ib_umem_chunk *prev_chunk; | |
1688 | struct ib_umem_chunk *chunk; | |
1689 | struct ib_phys_buf *pbuf; | |
1690 | u64 *fmrlist; | |
1691 | u64 num4k, pgaddr, offs4k; | |
1692 | u32 i = 0; | |
1693 | u32 j = 0; | |
1694 | ||
1695 | if (pginfo->type == EHCA_MR_PGI_PHYS) { | |
1696 | /* loop over desired phys_buf_array entries */ | |
1697 | while (i < number) { | |
1698 | pbuf = pginfo->phys_buf_array + pginfo->next_buf; | |
1699 | num4k = ((pbuf->addr % EHCA_PAGESIZE) + pbuf->size + | |
1700 | EHCA_PAGESIZE - 1) / EHCA_PAGESIZE; | |
1701 | offs4k = (pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE; | |
1702 | while (pginfo->next_4k < offs4k + num4k) { | |
1703 | /* sanity check */ | |
1704 | if ((pginfo->page_cnt >= pginfo->num_pages) || | |
1705 | (pginfo->page_4k_cnt >= pginfo->num_4k)) { | |
1706 | ehca_gen_err("page_cnt >= num_pages, " | |
1707 | "page_cnt=%lx " | |
1708 | "num_pages=%lx " | |
1709 | "page_4k_cnt=%lx " | |
1710 | "num_4k=%lx i=%x", | |
1711 | pginfo->page_cnt, | |
1712 | pginfo->num_pages, | |
1713 | pginfo->page_4k_cnt, | |
1714 | pginfo->num_4k, i); | |
1715 | ret = -EFAULT; | |
1716 | goto ehca_set_pagebuf_exit0; | |
1717 | } | |
1718 | *kpage = phys_to_abs( | |
1719 | (pbuf->addr & EHCA_PAGEMASK) | |
1720 | + (pginfo->next_4k * EHCA_PAGESIZE)); | |
1721 | if ( !(*kpage) && pbuf->addr ) { | |
1722 | ehca_gen_err("pbuf->addr=%lx " | |
1723 | "pbuf->size=%lx " | |
1724 | "next_4k=%lx", pbuf->addr, | |
1725 | pbuf->size, | |
1726 | pginfo->next_4k); | |
1727 | ret = -EFAULT; | |
1728 | goto ehca_set_pagebuf_exit0; | |
1729 | } | |
1730 | (pginfo->page_4k_cnt)++; | |
1731 | (pginfo->next_4k)++; | |
1732 | if (pginfo->next_4k % | |
1733 | (PAGE_SIZE / EHCA_PAGESIZE) == 0) | |
1734 | (pginfo->page_cnt)++; | |
1735 | kpage++; | |
1736 | i++; | |
1737 | if (i >= number) break; | |
1738 | } | |
1739 | if (pginfo->next_4k >= offs4k + num4k) { | |
1740 | (pginfo->next_buf)++; | |
1741 | pginfo->next_4k = 0; | |
1742 | } | |
1743 | } | |
1744 | } else if (pginfo->type == EHCA_MR_PGI_USER) { | |
1745 | /* loop over desired chunk entries */ | |
1746 | chunk = pginfo->next_chunk; | |
1747 | prev_chunk = pginfo->next_chunk; | |
1748 | list_for_each_entry_continue(chunk, | |
1749 | (&(pginfo->region->chunk_list)), | |
1750 | list) { | |
1751 | for (i = pginfo->next_nmap; i < chunk->nmap; ) { | |
1752 | pgaddr = ( page_to_pfn(chunk->page_list[i].page) | |
1753 | << PAGE_SHIFT ); | |
1754 | *kpage = phys_to_abs(pgaddr + | |
1755 | (pginfo->next_4k * | |
1756 | EHCA_PAGESIZE)); | |
1757 | if ( !(*kpage) ) { | |
1758 | ehca_gen_err("pgaddr=%lx " | |
1759 | "chunk->page_list[i]=%lx " | |
1760 | "i=%x next_4k=%lx mr=%p", | |
1761 | pgaddr, | |
1762 | (u64)sg_dma_address( | |
1763 | &chunk-> | |
1764 | page_list[i]), | |
1765 | i, pginfo->next_4k, e_mr); | |
1766 | ret = -EFAULT; | |
1767 | goto ehca_set_pagebuf_exit0; | |
1768 | } | |
1769 | (pginfo->page_4k_cnt)++; | |
1770 | (pginfo->next_4k)++; | |
1771 | kpage++; | |
1772 | if (pginfo->next_4k % | |
1773 | (PAGE_SIZE / EHCA_PAGESIZE) == 0) { | |
1774 | (pginfo->page_cnt)++; | |
1775 | (pginfo->next_nmap)++; | |
1776 | pginfo->next_4k = 0; | |
1777 | i++; | |
1778 | } | |
1779 | j++; | |
1780 | if (j >= number) break; | |
1781 | } | |
1782 | if ((pginfo->next_nmap >= chunk->nmap) && | |
1783 | (j >= number)) { | |
1784 | pginfo->next_nmap = 0; | |
1785 | prev_chunk = chunk; | |
1786 | break; | |
1787 | } else if (pginfo->next_nmap >= chunk->nmap) { | |
1788 | pginfo->next_nmap = 0; | |
1789 | prev_chunk = chunk; | |
1790 | } else if (j >= number) | |
1791 | break; | |
1792 | else | |
1793 | prev_chunk = chunk; | |
1794 | } | |
1795 | pginfo->next_chunk = | |
1796 | list_prepare_entry(prev_chunk, | |
1797 | (&(pginfo->region->chunk_list)), | |
1798 | list); | |
1799 | } else if (pginfo->type == EHCA_MR_PGI_FMR) { | |
1800 | /* loop over desired page_list entries */ | |
1801 | fmrlist = pginfo->page_list + pginfo->next_listelem; | |
1802 | for (i = 0; i < number; i++) { | |
1803 | *kpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) + | |
1804 | pginfo->next_4k * EHCA_PAGESIZE); | |
1805 | if ( !(*kpage) ) { | |
1806 | ehca_gen_err("*fmrlist=%lx fmrlist=%p " | |
1807 | "next_listelem=%lx next_4k=%lx", | |
1808 | *fmrlist, fmrlist, | |
1809 | pginfo->next_listelem, | |
1810 | pginfo->next_4k); | |
1811 | ret = -EFAULT; | |
1812 | goto ehca_set_pagebuf_exit0; | |
1813 | } | |
1814 | (pginfo->page_4k_cnt)++; | |
1815 | (pginfo->next_4k)++; | |
1816 | kpage++; | |
1817 | if (pginfo->next_4k % | |
1818 | (e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) { | |
1819 | (pginfo->page_cnt)++; | |
1820 | (pginfo->next_listelem)++; | |
1821 | fmrlist++; | |
1822 | pginfo->next_4k = 0; | |
1823 | } | |
1824 | } | |
1825 | } else { | |
1826 | ehca_gen_err("bad pginfo->type=%x", pginfo->type); | |
1827 | ret = -EFAULT; | |
1828 | goto ehca_set_pagebuf_exit0; | |
1829 | } | |
1830 | ||
1831 | ehca_set_pagebuf_exit0: | |
1832 | if (ret) | |
1833 | ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_pages=%lx " | |
1834 | "num_4k=%lx next_buf=%lx next_4k=%lx number=%x " | |
1835 | "kpage=%p page_cnt=%lx page_4k_cnt=%lx i=%x " | |
1836 | "next_listelem=%lx region=%p next_chunk=%p " | |
1837 | "next_nmap=%lx", ret, e_mr, pginfo, pginfo->type, | |
1838 | pginfo->num_pages, pginfo->num_4k, | |
1839 | pginfo->next_buf, pginfo->next_4k, number, kpage, | |
1840 | pginfo->page_cnt, pginfo->page_4k_cnt, i, | |
1841 | pginfo->next_listelem, pginfo->region, | |
1842 | pginfo->next_chunk, pginfo->next_nmap); | |
1843 | return ret; | |
1844 | } /* end ehca_set_pagebuf() */ | |
1845 | ||
1846 | /*----------------------------------------------------------------------*/ | |
1847 | ||
1848 | /* setup 1 page from page info page buffer */ | |
1849 | int ehca_set_pagebuf_1(struct ehca_mr *e_mr, | |
1850 | struct ehca_mr_pginfo *pginfo, | |
1851 | u64 *rpage) | |
1852 | { | |
1853 | int ret = 0; | |
1854 | struct ib_phys_buf *tmp_pbuf; | |
1855 | u64 *fmrlist; | |
1856 | struct ib_umem_chunk *chunk; | |
1857 | struct ib_umem_chunk *prev_chunk; | |
1858 | u64 pgaddr, num4k, offs4k; | |
1859 | ||
1860 | if (pginfo->type == EHCA_MR_PGI_PHYS) { | |
1861 | /* sanity check */ | |
1862 | if ((pginfo->page_cnt >= pginfo->num_pages) || | |
1863 | (pginfo->page_4k_cnt >= pginfo->num_4k)) { | |
1864 | ehca_gen_err("page_cnt >= num_pages, page_cnt=%lx " | |
1865 | "num_pages=%lx page_4k_cnt=%lx num_4k=%lx", | |
1866 | pginfo->page_cnt, pginfo->num_pages, | |
1867 | pginfo->page_4k_cnt, pginfo->num_4k); | |
1868 | ret = -EFAULT; | |
1869 | goto ehca_set_pagebuf_1_exit0; | |
1870 | } | |
1871 | tmp_pbuf = pginfo->phys_buf_array + pginfo->next_buf; | |
1872 | num4k = ((tmp_pbuf->addr % EHCA_PAGESIZE) + tmp_pbuf->size + | |
1873 | EHCA_PAGESIZE - 1) / EHCA_PAGESIZE; | |
1874 | offs4k = (tmp_pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE; | |
1875 | *rpage = phys_to_abs((tmp_pbuf->addr & EHCA_PAGEMASK) + | |
1876 | (pginfo->next_4k * EHCA_PAGESIZE)); | |
1877 | if ( !(*rpage) && tmp_pbuf->addr ) { | |
1878 | ehca_gen_err("tmp_pbuf->addr=%lx" | |
1879 | " tmp_pbuf->size=%lx next_4k=%lx", | |
1880 | tmp_pbuf->addr, tmp_pbuf->size, | |
1881 | pginfo->next_4k); | |
1882 | ret = -EFAULT; | |
1883 | goto ehca_set_pagebuf_1_exit0; | |
1884 | } | |
1885 | (pginfo->page_4k_cnt)++; | |
1886 | (pginfo->next_4k)++; | |
1887 | if (pginfo->next_4k % (PAGE_SIZE / EHCA_PAGESIZE) == 0) | |
1888 | (pginfo->page_cnt)++; | |
1889 | if (pginfo->next_4k >= offs4k + num4k) { | |
1890 | (pginfo->next_buf)++; | |
1891 | pginfo->next_4k = 0; | |
1892 | } | |
1893 | } else if (pginfo->type == EHCA_MR_PGI_USER) { | |
1894 | chunk = pginfo->next_chunk; | |
1895 | prev_chunk = pginfo->next_chunk; | |
1896 | list_for_each_entry_continue(chunk, | |
1897 | (&(pginfo->region->chunk_list)), | |
1898 | list) { | |
1899 | pgaddr = ( page_to_pfn(chunk->page_list[ | |
1900 | pginfo->next_nmap].page) | |
1901 | << PAGE_SHIFT); | |
1902 | *rpage = phys_to_abs(pgaddr + | |
1903 | (pginfo->next_4k * EHCA_PAGESIZE)); | |
1904 | if ( !(*rpage) ) { | |
1905 | ehca_gen_err("pgaddr=%lx chunk->page_list[]=%lx" | |
1906 | " next_nmap=%lx next_4k=%lx mr=%p", | |
1907 | pgaddr, (u64)sg_dma_address( | |
1908 | &chunk->page_list[ | |
1909 | pginfo-> | |
1910 | next_nmap]), | |
1911 | pginfo->next_nmap, pginfo->next_4k, | |
1912 | e_mr); | |
1913 | ret = -EFAULT; | |
1914 | goto ehca_set_pagebuf_1_exit0; | |
1915 | } | |
1916 | (pginfo->page_4k_cnt)++; | |
1917 | (pginfo->next_4k)++; | |
1918 | if (pginfo->next_4k % | |
1919 | (PAGE_SIZE / EHCA_PAGESIZE) == 0) { | |
1920 | (pginfo->page_cnt)++; | |
1921 | (pginfo->next_nmap)++; | |
1922 | pginfo->next_4k = 0; | |
1923 | } | |
1924 | if (pginfo->next_nmap >= chunk->nmap) { | |
1925 | pginfo->next_nmap = 0; | |
1926 | prev_chunk = chunk; | |
1927 | } | |
1928 | break; | |
1929 | } | |
1930 | pginfo->next_chunk = | |
1931 | list_prepare_entry(prev_chunk, | |
1932 | (&(pginfo->region->chunk_list)), | |
1933 | list); | |
1934 | } else if (pginfo->type == EHCA_MR_PGI_FMR) { | |
1935 | fmrlist = pginfo->page_list + pginfo->next_listelem; | |
1936 | *rpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) + | |
1937 | pginfo->next_4k * EHCA_PAGESIZE); | |
1938 | if ( !(*rpage) ) { | |
1939 | ehca_gen_err("*fmrlist=%lx fmrlist=%p " | |
1940 | "next_listelem=%lx next_4k=%lx", | |
1941 | *fmrlist, fmrlist, pginfo->next_listelem, | |
1942 | pginfo->next_4k); | |
1943 | ret = -EFAULT; | |
1944 | goto ehca_set_pagebuf_1_exit0; | |
1945 | } | |
1946 | (pginfo->page_4k_cnt)++; | |
1947 | (pginfo->next_4k)++; | |
1948 | if (pginfo->next_4k % | |
1949 | (e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) { | |
1950 | (pginfo->page_cnt)++; | |
1951 | (pginfo->next_listelem)++; | |
1952 | pginfo->next_4k = 0; | |
1953 | } | |
1954 | } else { | |
1955 | ehca_gen_err("bad pginfo->type=%x", pginfo->type); | |
1956 | ret = -EFAULT; | |
1957 | goto ehca_set_pagebuf_1_exit0; | |
1958 | } | |
1959 | ||
1960 | ehca_set_pagebuf_1_exit0: | |
1961 | if (ret) | |
1962 | ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_pages=%lx " | |
1963 | "num_4k=%lx next_buf=%lx next_4k=%lx rpage=%p " | |
1964 | "page_cnt=%lx page_4k_cnt=%lx next_listelem=%lx " | |
1965 | "region=%p next_chunk=%p next_nmap=%lx", ret, e_mr, | |
1966 | pginfo, pginfo->type, pginfo->num_pages, | |
1967 | pginfo->num_4k, pginfo->next_buf, pginfo->next_4k, | |
1968 | rpage, pginfo->page_cnt, pginfo->page_4k_cnt, | |
1969 | pginfo->next_listelem, pginfo->region, | |
1970 | pginfo->next_chunk, pginfo->next_nmap); | |
1971 | return ret; | |
1972 | } /* end ehca_set_pagebuf_1() */ | |
1973 | ||
1974 | /*----------------------------------------------------------------------*/ | |
1975 | ||
1976 | /* | |
1977 | * check MR if it is a max-MR, i.e. uses whole memory | |
1978 | * in case it's a max-MR 1 is returned, else 0 | |
1979 | */ | |
1980 | int ehca_mr_is_maxmr(u64 size, | |
1981 | u64 *iova_start) | |
1982 | { | |
1983 | /* a MR is treated as max-MR only if it fits following: */ | |
1984 | if ((size == ((u64)high_memory - PAGE_OFFSET)) && | |
1985 | (iova_start == (void*)KERNELBASE)) { | |
1986 | ehca_gen_dbg("this is a max-MR"); | |
1987 | return 1; | |
1988 | } else | |
1989 | return 0; | |
1990 | } /* end ehca_mr_is_maxmr() */ | |
1991 | ||
1992 | /*----------------------------------------------------------------------*/ | |
1993 | ||
1994 | /* map access control for MR/MW. This routine is used for MR and MW. */ | |
1995 | void ehca_mrmw_map_acl(int ib_acl, | |
1996 | u32 *hipz_acl) | |
1997 | { | |
1998 | *hipz_acl = 0; | |
1999 | if (ib_acl & IB_ACCESS_REMOTE_READ) | |
2000 | *hipz_acl |= HIPZ_ACCESSCTRL_R_READ; | |
2001 | if (ib_acl & IB_ACCESS_REMOTE_WRITE) | |
2002 | *hipz_acl |= HIPZ_ACCESSCTRL_R_WRITE; | |
2003 | if (ib_acl & IB_ACCESS_REMOTE_ATOMIC) | |
2004 | *hipz_acl |= HIPZ_ACCESSCTRL_R_ATOMIC; | |
2005 | if (ib_acl & IB_ACCESS_LOCAL_WRITE) | |
2006 | *hipz_acl |= HIPZ_ACCESSCTRL_L_WRITE; | |
2007 | if (ib_acl & IB_ACCESS_MW_BIND) | |
2008 | *hipz_acl |= HIPZ_ACCESSCTRL_MW_BIND; | |
2009 | } /* end ehca_mrmw_map_acl() */ | |
2010 | ||
2011 | /*----------------------------------------------------------------------*/ | |
2012 | ||
2013 | /* sets page size in hipz access control for MR/MW. */ | |
2014 | void ehca_mrmw_set_pgsize_hipz_acl(u32 *hipz_acl) /*INOUT*/ | |
2015 | { | |
2016 | return; /* HCA supports only 4k */ | |
2017 | } /* end ehca_mrmw_set_pgsize_hipz_acl() */ | |
2018 | ||
2019 | /*----------------------------------------------------------------------*/ | |
2020 | ||
2021 | /* | |
2022 | * reverse map access control for MR/MW. | |
2023 | * This routine is used for MR and MW. | |
2024 | */ | |
2025 | void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl, | |
2026 | int *ib_acl) /*OUT*/ | |
2027 | { | |
2028 | *ib_acl = 0; | |
2029 | if (*hipz_acl & HIPZ_ACCESSCTRL_R_READ) | |
2030 | *ib_acl |= IB_ACCESS_REMOTE_READ; | |
2031 | if (*hipz_acl & HIPZ_ACCESSCTRL_R_WRITE) | |
2032 | *ib_acl |= IB_ACCESS_REMOTE_WRITE; | |
2033 | if (*hipz_acl & HIPZ_ACCESSCTRL_R_ATOMIC) | |
2034 | *ib_acl |= IB_ACCESS_REMOTE_ATOMIC; | |
2035 | if (*hipz_acl & HIPZ_ACCESSCTRL_L_WRITE) | |
2036 | *ib_acl |= IB_ACCESS_LOCAL_WRITE; | |
2037 | if (*hipz_acl & HIPZ_ACCESSCTRL_MW_BIND) | |
2038 | *ib_acl |= IB_ACCESS_MW_BIND; | |
2039 | } /* end ehca_mrmw_reverse_map_acl() */ | |
2040 | ||
2041 | ||
2042 | /*----------------------------------------------------------------------*/ | |
2043 | ||
2044 | /* | |
2045 | * map HIPZ rc to IB retcodes for MR/MW allocations | |
2046 | * Used for hipz_mr_reg_alloc and hipz_mw_alloc. | |
2047 | */ | |
2048 | int ehca_mrmw_map_hrc_alloc(const u64 hipz_rc) | |
2049 | { | |
2050 | switch (hipz_rc) { | |
2051 | case H_SUCCESS: /* successful completion */ | |
2052 | return 0; | |
2053 | case H_ADAPTER_PARM: /* invalid adapter handle */ | |
2054 | case H_RT_PARM: /* invalid resource type */ | |
2055 | case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ | |
2056 | case H_MLENGTH_PARM: /* invalid memory length */ | |
2057 | case H_MEM_ACCESS_PARM: /* invalid access controls */ | |
2058 | case H_CONSTRAINED: /* resource constraint */ | |
2059 | return -EINVAL; | |
2060 | case H_BUSY: /* long busy */ | |
2061 | return -EBUSY; | |
2062 | default: | |
2063 | return -EINVAL; | |
2064 | } | |
2065 | } /* end ehca_mrmw_map_hrc_alloc() */ | |
2066 | ||
2067 | /*----------------------------------------------------------------------*/ | |
2068 | ||
2069 | /* | |
2070 | * map HIPZ rc to IB retcodes for MR register rpage | |
2071 | * Used for hipz_h_register_rpage_mr at registering last page | |
2072 | */ | |
2073 | int ehca_mrmw_map_hrc_rrpg_last(const u64 hipz_rc) | |
2074 | { | |
2075 | switch (hipz_rc) { | |
2076 | case H_SUCCESS: /* registration complete */ | |
2077 | return 0; | |
2078 | case H_PAGE_REGISTERED: /* page registered */ | |
2079 | case H_ADAPTER_PARM: /* invalid adapter handle */ | |
2080 | case H_RH_PARM: /* invalid resource handle */ | |
2081 | /* case H_QT_PARM: invalid queue type */ | |
2082 | case H_PARAMETER: /* | |
2083 | * invalid logical address, | |
2084 | * or count zero or greater 512 | |
2085 | */ | |
2086 | case H_TABLE_FULL: /* page table full */ | |
2087 | case H_HARDWARE: /* HCA not operational */ | |
2088 | return -EINVAL; | |
2089 | case H_BUSY: /* long busy */ | |
2090 | return -EBUSY; | |
2091 | default: | |
2092 | return -EINVAL; | |
2093 | } | |
2094 | } /* end ehca_mrmw_map_hrc_rrpg_last() */ | |
2095 | ||
2096 | /*----------------------------------------------------------------------*/ | |
2097 | ||
2098 | /* | |
2099 | * map HIPZ rc to IB retcodes for MR register rpage | |
2100 | * Used for hipz_h_register_rpage_mr at registering one page, but not last page | |
2101 | */ | |
2102 | int ehca_mrmw_map_hrc_rrpg_notlast(const u64 hipz_rc) | |
2103 | { | |
2104 | switch (hipz_rc) { | |
2105 | case H_PAGE_REGISTERED: /* page registered */ | |
2106 | return 0; | |
2107 | case H_SUCCESS: /* registration complete */ | |
2108 | case H_ADAPTER_PARM: /* invalid adapter handle */ | |
2109 | case H_RH_PARM: /* invalid resource handle */ | |
2110 | /* case H_QT_PARM: invalid queue type */ | |
2111 | case H_PARAMETER: /* | |
2112 | * invalid logical address, | |
2113 | * or count zero or greater 512 | |
2114 | */ | |
2115 | case H_TABLE_FULL: /* page table full */ | |
2116 | case H_HARDWARE: /* HCA not operational */ | |
2117 | return -EINVAL; | |
2118 | case H_BUSY: /* long busy */ | |
2119 | return -EBUSY; | |
2120 | default: | |
2121 | return -EINVAL; | |
2122 | } | |
2123 | } /* end ehca_mrmw_map_hrc_rrpg_notlast() */ | |
2124 | ||
2125 | /*----------------------------------------------------------------------*/ | |
2126 | ||
2127 | /* map HIPZ rc to IB retcodes for MR query. Used for hipz_mr_query. */ | |
2128 | int ehca_mrmw_map_hrc_query_mr(const u64 hipz_rc) | |
2129 | { | |
2130 | switch (hipz_rc) { | |
2131 | case H_SUCCESS: /* successful completion */ | |
2132 | return 0; | |
2133 | case H_ADAPTER_PARM: /* invalid adapter handle */ | |
2134 | case H_RH_PARM: /* invalid resource handle */ | |
2135 | return -EINVAL; | |
2136 | case H_BUSY: /* long busy */ | |
2137 | return -EBUSY; | |
2138 | default: | |
2139 | return -EINVAL; | |
2140 | } | |
2141 | } /* end ehca_mrmw_map_hrc_query_mr() */ | |
2142 | ||
2143 | /*----------------------------------------------------------------------*/ | |
2144 | /*----------------------------------------------------------------------*/ | |
2145 | ||
2146 | /* | |
2147 | * map HIPZ rc to IB retcodes for freeing MR resource | |
2148 | * Used for hipz_h_free_resource_mr | |
2149 | */ | |
2150 | int ehca_mrmw_map_hrc_free_mr(const u64 hipz_rc) | |
2151 | { | |
2152 | switch (hipz_rc) { | |
2153 | case H_SUCCESS: /* resource freed */ | |
2154 | return 0; | |
2155 | case H_ADAPTER_PARM: /* invalid adapter handle */ | |
2156 | case H_RH_PARM: /* invalid resource handle */ | |
2157 | case H_R_STATE: /* invalid resource state */ | |
2158 | case H_HARDWARE: /* HCA not operational */ | |
2159 | return -EINVAL; | |
2160 | case H_RESOURCE: /* Resource in use */ | |
2161 | case H_BUSY: /* long busy */ | |
2162 | return -EBUSY; | |
2163 | default: | |
2164 | return -EINVAL; | |
2165 | } | |
2166 | } /* end ehca_mrmw_map_hrc_free_mr() */ | |
2167 | ||
2168 | /*----------------------------------------------------------------------*/ | |
2169 | ||
2170 | /* | |
2171 | * map HIPZ rc to IB retcodes for freeing MW resource | |
2172 | * Used for hipz_h_free_resource_mw | |
2173 | */ | |
2174 | int ehca_mrmw_map_hrc_free_mw(const u64 hipz_rc) | |
2175 | { | |
2176 | switch (hipz_rc) { | |
2177 | case H_SUCCESS: /* resource freed */ | |
2178 | return 0; | |
2179 | case H_ADAPTER_PARM: /* invalid adapter handle */ | |
2180 | case H_RH_PARM: /* invalid resource handle */ | |
2181 | case H_R_STATE: /* invalid resource state */ | |
2182 | case H_HARDWARE: /* HCA not operational */ | |
2183 | return -EINVAL; | |
2184 | case H_RESOURCE: /* Resource in use */ | |
2185 | case H_BUSY: /* long busy */ | |
2186 | return -EBUSY; | |
2187 | default: | |
2188 | return -EINVAL; | |
2189 | } | |
2190 | } /* end ehca_mrmw_map_hrc_free_mw() */ | |
2191 | ||
2192 | /*----------------------------------------------------------------------*/ | |
2193 | ||
2194 | /* | |
2195 | * map HIPZ rc to IB retcodes for SMR registrations | |
2196 | * Used for hipz_h_register_smr. | |
2197 | */ | |
2198 | int ehca_mrmw_map_hrc_reg_smr(const u64 hipz_rc) | |
2199 | { | |
2200 | switch (hipz_rc) { | |
2201 | case H_SUCCESS: /* successful completion */ | |
2202 | return 0; | |
2203 | case H_ADAPTER_PARM: /* invalid adapter handle */ | |
2204 | case H_RH_PARM: /* invalid resource handle */ | |
2205 | case H_MEM_PARM: /* invalid MR virtual address */ | |
2206 | case H_MEM_ACCESS_PARM: /* invalid access controls */ | |
2207 | case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */ | |
2208 | return -EINVAL; | |
2209 | case H_BUSY: /* long busy */ | |
2210 | return -EBUSY; | |
2211 | default: | |
2212 | return -EINVAL; | |
2213 | } | |
2214 | } /* end ehca_mrmw_map_hrc_reg_smr() */ | |
2215 | ||
2216 | /*----------------------------------------------------------------------*/ | |
2217 | ||
2218 | /* | |
2219 | * MR destructor and constructor | |
2220 | * used in Reregister MR verb, sets all fields in ehca_mr_t to 0, | |
2221 | * except struct ib_mr and spinlock | |
2222 | */ | |
2223 | void ehca_mr_deletenew(struct ehca_mr *mr) | |
2224 | { | |
2225 | mr->flags = 0; | |
2226 | mr->num_pages = 0; | |
2227 | mr->num_4k = 0; | |
2228 | mr->acl = 0; | |
2229 | mr->start = NULL; | |
2230 | mr->fmr_page_size = 0; | |
2231 | mr->fmr_max_pages = 0; | |
2232 | mr->fmr_max_maps = 0; | |
2233 | mr->fmr_map_cnt = 0; | |
2234 | memset(&mr->ipz_mr_handle, 0, sizeof(mr->ipz_mr_handle)); | |
2235 | memset(&mr->galpas, 0, sizeof(mr->galpas)); | |
2236 | mr->nr_of_pages = 0; | |
2237 | mr->pagearray = NULL; | |
2238 | } /* end ehca_mr_deletenew() */ | |
2239 | ||
2240 | int ehca_init_mrmw_cache(void) | |
2241 | { | |
2242 | mr_cache = kmem_cache_create("ehca_cache_mr", | |
2243 | sizeof(struct ehca_mr), 0, | |
2244 | SLAB_HWCACHE_ALIGN, | |
2245 | NULL, NULL); | |
2246 | if (!mr_cache) | |
2247 | return -ENOMEM; | |
2248 | mw_cache = kmem_cache_create("ehca_cache_mw", | |
2249 | sizeof(struct ehca_mw), 0, | |
2250 | SLAB_HWCACHE_ALIGN, | |
2251 | NULL, NULL); | |
2252 | if (!mw_cache) { | |
2253 | kmem_cache_destroy(mr_cache); | |
2254 | mr_cache = NULL; | |
2255 | return -ENOMEM; | |
2256 | } | |
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | void ehca_cleanup_mrmw_cache(void) | |
2261 | { | |
2262 | if (mr_cache) | |
2263 | kmem_cache_destroy(mr_cache); | |
2264 | if (mw_cache) | |
2265 | kmem_cache_destroy(mw_cache); | |
2266 | } |