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