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fb1d9738 JB |
1 | /************************************************************************** |
2 | * | |
3 | * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | ||
28 | #include "vmwgfx_drv.h" | |
760285e7 DH |
29 | #include <drm/ttm/ttm_bo_driver.h> |
30 | #include <drm/ttm/ttm_placement.h> | |
31 | #include <drm/ttm/ttm_page_alloc.h> | |
fb1d9738 JB |
32 | |
33 | static uint32_t vram_placement_flags = TTM_PL_FLAG_VRAM | | |
34 | TTM_PL_FLAG_CACHED; | |
35 | ||
36 | static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM | | |
37 | TTM_PL_FLAG_CACHED | | |
38 | TTM_PL_FLAG_NO_EVICT; | |
39 | ||
40 | static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM | | |
41 | TTM_PL_FLAG_CACHED; | |
42 | ||
3530bdc3 TH |
43 | static uint32_t sys_ne_placement_flags = TTM_PL_FLAG_SYSTEM | |
44 | TTM_PL_FLAG_CACHED | | |
45 | TTM_PL_FLAG_NO_EVICT; | |
46 | ||
135cba0d TH |
47 | static uint32_t gmr_placement_flags = VMW_PL_FLAG_GMR | |
48 | TTM_PL_FLAG_CACHED; | |
49 | ||
d991ef03 JB |
50 | static uint32_t gmr_ne_placement_flags = VMW_PL_FLAG_GMR | |
51 | TTM_PL_FLAG_CACHED | | |
52 | TTM_PL_FLAG_NO_EVICT; | |
53 | ||
6da768aa TH |
54 | static uint32_t mob_placement_flags = VMW_PL_FLAG_MOB | |
55 | TTM_PL_FLAG_CACHED; | |
56 | ||
fb1d9738 JB |
57 | struct ttm_placement vmw_vram_placement = { |
58 | .fpfn = 0, | |
59 | .lpfn = 0, | |
60 | .num_placement = 1, | |
61 | .placement = &vram_placement_flags, | |
62 | .num_busy_placement = 1, | |
63 | .busy_placement = &vram_placement_flags | |
64 | }; | |
65 | ||
135cba0d TH |
66 | static uint32_t vram_gmr_placement_flags[] = { |
67 | TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED, | |
68 | VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | |
69 | }; | |
70 | ||
5bb39e81 TH |
71 | static uint32_t gmr_vram_placement_flags[] = { |
72 | VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED, | |
73 | TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | |
74 | }; | |
75 | ||
135cba0d TH |
76 | struct ttm_placement vmw_vram_gmr_placement = { |
77 | .fpfn = 0, | |
78 | .lpfn = 0, | |
79 | .num_placement = 2, | |
80 | .placement = vram_gmr_placement_flags, | |
81 | .num_busy_placement = 1, | |
82 | .busy_placement = &gmr_placement_flags | |
83 | }; | |
84 | ||
d991ef03 JB |
85 | static uint32_t vram_gmr_ne_placement_flags[] = { |
86 | TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT, | |
87 | VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT | |
88 | }; | |
89 | ||
90 | struct ttm_placement vmw_vram_gmr_ne_placement = { | |
91 | .fpfn = 0, | |
92 | .lpfn = 0, | |
93 | .num_placement = 2, | |
94 | .placement = vram_gmr_ne_placement_flags, | |
95 | .num_busy_placement = 1, | |
96 | .busy_placement = &gmr_ne_placement_flags | |
97 | }; | |
98 | ||
8ba5152a TH |
99 | struct ttm_placement vmw_vram_sys_placement = { |
100 | .fpfn = 0, | |
101 | .lpfn = 0, | |
102 | .num_placement = 1, | |
103 | .placement = &vram_placement_flags, | |
104 | .num_busy_placement = 1, | |
105 | .busy_placement = &sys_placement_flags | |
106 | }; | |
107 | ||
fb1d9738 JB |
108 | struct ttm_placement vmw_vram_ne_placement = { |
109 | .fpfn = 0, | |
110 | .lpfn = 0, | |
111 | .num_placement = 1, | |
112 | .placement = &vram_ne_placement_flags, | |
113 | .num_busy_placement = 1, | |
114 | .busy_placement = &vram_ne_placement_flags | |
115 | }; | |
116 | ||
117 | struct ttm_placement vmw_sys_placement = { | |
118 | .fpfn = 0, | |
119 | .lpfn = 0, | |
120 | .num_placement = 1, | |
121 | .placement = &sys_placement_flags, | |
122 | .num_busy_placement = 1, | |
123 | .busy_placement = &sys_placement_flags | |
124 | }; | |
125 | ||
3530bdc3 TH |
126 | struct ttm_placement vmw_sys_ne_placement = { |
127 | .fpfn = 0, | |
128 | .lpfn = 0, | |
129 | .num_placement = 1, | |
130 | .placement = &sys_ne_placement_flags, | |
131 | .num_busy_placement = 1, | |
132 | .busy_placement = &sys_ne_placement_flags | |
133 | }; | |
134 | ||
d991ef03 JB |
135 | static uint32_t evictable_placement_flags[] = { |
136 | TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED, | |
137 | TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED, | |
6da768aa TH |
138 | VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED, |
139 | VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED | |
d991ef03 JB |
140 | }; |
141 | ||
142 | struct ttm_placement vmw_evictable_placement = { | |
143 | .fpfn = 0, | |
144 | .lpfn = 0, | |
6da768aa | 145 | .num_placement = 4, |
d991ef03 JB |
146 | .placement = evictable_placement_flags, |
147 | .num_busy_placement = 1, | |
148 | .busy_placement = &sys_placement_flags | |
149 | }; | |
150 | ||
5bb39e81 TH |
151 | struct ttm_placement vmw_srf_placement = { |
152 | .fpfn = 0, | |
153 | .lpfn = 0, | |
154 | .num_placement = 1, | |
155 | .num_busy_placement = 2, | |
156 | .placement = &gmr_placement_flags, | |
157 | .busy_placement = gmr_vram_placement_flags | |
158 | }; | |
159 | ||
6da768aa TH |
160 | struct ttm_placement vmw_mob_placement = { |
161 | .fpfn = 0, | |
162 | .lpfn = 0, | |
163 | .num_placement = 1, | |
164 | .num_busy_placement = 1, | |
165 | .placement = &mob_placement_flags, | |
166 | .busy_placement = &mob_placement_flags | |
167 | }; | |
168 | ||
649bf3ca | 169 | struct vmw_ttm_tt { |
d92d9851 | 170 | struct ttm_dma_tt dma_ttm; |
135cba0d TH |
171 | struct vmw_private *dev_priv; |
172 | int gmr_id; | |
6da768aa TH |
173 | struct vmw_mob *mob; |
174 | int mem_type; | |
d92d9851 TH |
175 | struct sg_table sgt; |
176 | struct vmw_sg_table vsgt; | |
177 | uint64_t sg_alloc_size; | |
178 | bool mapped; | |
fb1d9738 JB |
179 | }; |
180 | ||
308d17ef TH |
181 | const size_t vmw_tt_size = sizeof(struct vmw_ttm_tt); |
182 | ||
d92d9851 TH |
183 | /** |
184 | * Helper functions to advance a struct vmw_piter iterator. | |
185 | * | |
186 | * @viter: Pointer to the iterator. | |
187 | * | |
188 | * These functions return false if past the end of the list, | |
189 | * true otherwise. Functions are selected depending on the current | |
190 | * DMA mapping mode. | |
191 | */ | |
192 | static bool __vmw_piter_non_sg_next(struct vmw_piter *viter) | |
193 | { | |
194 | return ++(viter->i) < viter->num_pages; | |
195 | } | |
196 | ||
197 | static bool __vmw_piter_sg_next(struct vmw_piter *viter) | |
198 | { | |
199 | return __sg_page_iter_next(&viter->iter); | |
200 | } | |
201 | ||
202 | ||
203 | /** | |
204 | * Helper functions to return a pointer to the current page. | |
205 | * | |
206 | * @viter: Pointer to the iterator | |
207 | * | |
208 | * These functions return a pointer to the page currently | |
209 | * pointed to by @viter. Functions are selected depending on the | |
210 | * current mapping mode. | |
211 | */ | |
212 | static struct page *__vmw_piter_non_sg_page(struct vmw_piter *viter) | |
213 | { | |
214 | return viter->pages[viter->i]; | |
215 | } | |
216 | ||
217 | static struct page *__vmw_piter_sg_page(struct vmw_piter *viter) | |
218 | { | |
219 | return sg_page_iter_page(&viter->iter); | |
220 | } | |
221 | ||
222 | ||
223 | /** | |
224 | * Helper functions to return the DMA address of the current page. | |
225 | * | |
226 | * @viter: Pointer to the iterator | |
227 | * | |
228 | * These functions return the DMA address of the page currently | |
229 | * pointed to by @viter. Functions are selected depending on the | |
230 | * current mapping mode. | |
231 | */ | |
232 | static dma_addr_t __vmw_piter_phys_addr(struct vmw_piter *viter) | |
233 | { | |
234 | return page_to_phys(viter->pages[viter->i]); | |
235 | } | |
236 | ||
237 | static dma_addr_t __vmw_piter_dma_addr(struct vmw_piter *viter) | |
238 | { | |
239 | return viter->addrs[viter->i]; | |
240 | } | |
241 | ||
242 | static dma_addr_t __vmw_piter_sg_addr(struct vmw_piter *viter) | |
243 | { | |
244 | return sg_page_iter_dma_address(&viter->iter); | |
245 | } | |
246 | ||
247 | ||
248 | /** | |
249 | * vmw_piter_start - Initialize a struct vmw_piter. | |
250 | * | |
251 | * @viter: Pointer to the iterator to initialize | |
252 | * @vsgt: Pointer to a struct vmw_sg_table to initialize from | |
253 | * | |
254 | * Note that we're following the convention of __sg_page_iter_start, so that | |
255 | * the iterator doesn't point to a valid page after initialization; it has | |
256 | * to be advanced one step first. | |
257 | */ | |
258 | void vmw_piter_start(struct vmw_piter *viter, const struct vmw_sg_table *vsgt, | |
259 | unsigned long p_offset) | |
260 | { | |
261 | viter->i = p_offset - 1; | |
262 | viter->num_pages = vsgt->num_pages; | |
263 | switch (vsgt->mode) { | |
264 | case vmw_dma_phys: | |
265 | viter->next = &__vmw_piter_non_sg_next; | |
266 | viter->dma_address = &__vmw_piter_phys_addr; | |
267 | viter->page = &__vmw_piter_non_sg_page; | |
268 | viter->pages = vsgt->pages; | |
269 | break; | |
270 | case vmw_dma_alloc_coherent: | |
271 | viter->next = &__vmw_piter_non_sg_next; | |
272 | viter->dma_address = &__vmw_piter_dma_addr; | |
273 | viter->page = &__vmw_piter_non_sg_page; | |
274 | viter->addrs = vsgt->addrs; | |
275 | break; | |
276 | case vmw_dma_map_populate: | |
277 | case vmw_dma_map_bind: | |
278 | viter->next = &__vmw_piter_sg_next; | |
279 | viter->dma_address = &__vmw_piter_sg_addr; | |
280 | viter->page = &__vmw_piter_sg_page; | |
281 | __sg_page_iter_start(&viter->iter, vsgt->sgt->sgl, | |
282 | vsgt->sgt->orig_nents, p_offset); | |
283 | break; | |
284 | default: | |
285 | BUG(); | |
286 | } | |
287 | } | |
288 | ||
289 | /** | |
290 | * vmw_ttm_unmap_from_dma - unmap device addresses previsouly mapped for | |
291 | * TTM pages | |
292 | * | |
293 | * @vmw_tt: Pointer to a struct vmw_ttm_backend | |
294 | * | |
295 | * Used to free dma mappings previously mapped by vmw_ttm_map_for_dma. | |
296 | */ | |
297 | static void vmw_ttm_unmap_from_dma(struct vmw_ttm_tt *vmw_tt) | |
298 | { | |
299 | struct device *dev = vmw_tt->dev_priv->dev->dev; | |
300 | ||
301 | dma_unmap_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.nents, | |
302 | DMA_BIDIRECTIONAL); | |
303 | vmw_tt->sgt.nents = vmw_tt->sgt.orig_nents; | |
304 | } | |
305 | ||
306 | /** | |
307 | * vmw_ttm_map_for_dma - map TTM pages to get device addresses | |
308 | * | |
309 | * @vmw_tt: Pointer to a struct vmw_ttm_backend | |
310 | * | |
311 | * This function is used to get device addresses from the kernel DMA layer. | |
312 | * However, it's violating the DMA API in that when this operation has been | |
313 | * performed, it's illegal for the CPU to write to the pages without first | |
314 | * unmapping the DMA mappings, or calling dma_sync_sg_for_cpu(). It is | |
315 | * therefore only legal to call this function if we know that the function | |
316 | * dma_sync_sg_for_cpu() is a NOP, and dma_sync_sg_for_device() is at most | |
317 | * a CPU write buffer flush. | |
318 | */ | |
319 | static int vmw_ttm_map_for_dma(struct vmw_ttm_tt *vmw_tt) | |
320 | { | |
321 | struct device *dev = vmw_tt->dev_priv->dev->dev; | |
322 | int ret; | |
323 | ||
324 | ret = dma_map_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.orig_nents, | |
325 | DMA_BIDIRECTIONAL); | |
326 | if (unlikely(ret == 0)) | |
327 | return -ENOMEM; | |
328 | ||
329 | vmw_tt->sgt.nents = ret; | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | /** | |
335 | * vmw_ttm_map_dma - Make sure TTM pages are visible to the device | |
336 | * | |
337 | * @vmw_tt: Pointer to a struct vmw_ttm_tt | |
338 | * | |
339 | * Select the correct function for and make sure the TTM pages are | |
340 | * visible to the device. Allocate storage for the device mappings. | |
341 | * If a mapping has already been performed, indicated by the storage | |
342 | * pointer being non NULL, the function returns success. | |
343 | */ | |
344 | static int vmw_ttm_map_dma(struct vmw_ttm_tt *vmw_tt) | |
345 | { | |
346 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
347 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
348 | struct vmw_sg_table *vsgt = &vmw_tt->vsgt; | |
349 | struct vmw_piter iter; | |
350 | dma_addr_t old; | |
351 | int ret = 0; | |
352 | static size_t sgl_size; | |
353 | static size_t sgt_size; | |
354 | ||
355 | if (vmw_tt->mapped) | |
356 | return 0; | |
357 | ||
358 | vsgt->mode = dev_priv->map_mode; | |
359 | vsgt->pages = vmw_tt->dma_ttm.ttm.pages; | |
360 | vsgt->num_pages = vmw_tt->dma_ttm.ttm.num_pages; | |
361 | vsgt->addrs = vmw_tt->dma_ttm.dma_address; | |
362 | vsgt->sgt = &vmw_tt->sgt; | |
363 | ||
364 | switch (dev_priv->map_mode) { | |
365 | case vmw_dma_map_bind: | |
366 | case vmw_dma_map_populate: | |
367 | if (unlikely(!sgl_size)) { | |
368 | sgl_size = ttm_round_pot(sizeof(struct scatterlist)); | |
369 | sgt_size = ttm_round_pot(sizeof(struct sg_table)); | |
370 | } | |
371 | vmw_tt->sg_alloc_size = sgt_size + sgl_size * vsgt->num_pages; | |
372 | ret = ttm_mem_global_alloc(glob, vmw_tt->sg_alloc_size, false, | |
373 | true); | |
374 | if (unlikely(ret != 0)) | |
375 | return ret; | |
376 | ||
377 | ret = sg_alloc_table_from_pages(&vmw_tt->sgt, vsgt->pages, | |
378 | vsgt->num_pages, 0, | |
379 | (unsigned long) | |
380 | vsgt->num_pages << PAGE_SHIFT, | |
381 | GFP_KERNEL); | |
382 | if (unlikely(ret != 0)) | |
383 | goto out_sg_alloc_fail; | |
384 | ||
385 | if (vsgt->num_pages > vmw_tt->sgt.nents) { | |
386 | uint64_t over_alloc = | |
387 | sgl_size * (vsgt->num_pages - | |
388 | vmw_tt->sgt.nents); | |
389 | ||
390 | ttm_mem_global_free(glob, over_alloc); | |
391 | vmw_tt->sg_alloc_size -= over_alloc; | |
392 | } | |
393 | ||
394 | ret = vmw_ttm_map_for_dma(vmw_tt); | |
395 | if (unlikely(ret != 0)) | |
396 | goto out_map_fail; | |
397 | ||
398 | break; | |
399 | default: | |
400 | break; | |
401 | } | |
402 | ||
403 | old = ~((dma_addr_t) 0); | |
404 | vmw_tt->vsgt.num_regions = 0; | |
405 | for (vmw_piter_start(&iter, vsgt, 0); vmw_piter_next(&iter);) { | |
406 | dma_addr_t cur = vmw_piter_dma_addr(&iter); | |
407 | ||
408 | if (cur != old + PAGE_SIZE) | |
409 | vmw_tt->vsgt.num_regions++; | |
410 | old = cur; | |
411 | } | |
412 | ||
413 | vmw_tt->mapped = true; | |
414 | return 0; | |
415 | ||
416 | out_map_fail: | |
417 | sg_free_table(vmw_tt->vsgt.sgt); | |
418 | vmw_tt->vsgt.sgt = NULL; | |
419 | out_sg_alloc_fail: | |
420 | ttm_mem_global_free(glob, vmw_tt->sg_alloc_size); | |
421 | return ret; | |
422 | } | |
423 | ||
424 | /** | |
425 | * vmw_ttm_unmap_dma - Tear down any TTM page device mappings | |
426 | * | |
427 | * @vmw_tt: Pointer to a struct vmw_ttm_tt | |
428 | * | |
429 | * Tear down any previously set up device DMA mappings and free | |
430 | * any storage space allocated for them. If there are no mappings set up, | |
431 | * this function is a NOP. | |
432 | */ | |
433 | static void vmw_ttm_unmap_dma(struct vmw_ttm_tt *vmw_tt) | |
434 | { | |
435 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
436 | ||
437 | if (!vmw_tt->vsgt.sgt) | |
438 | return; | |
439 | ||
440 | switch (dev_priv->map_mode) { | |
441 | case vmw_dma_map_bind: | |
442 | case vmw_dma_map_populate: | |
443 | vmw_ttm_unmap_from_dma(vmw_tt); | |
444 | sg_free_table(vmw_tt->vsgt.sgt); | |
445 | vmw_tt->vsgt.sgt = NULL; | |
446 | ttm_mem_global_free(vmw_mem_glob(dev_priv), | |
447 | vmw_tt->sg_alloc_size); | |
448 | break; | |
449 | default: | |
450 | break; | |
451 | } | |
452 | vmw_tt->mapped = false; | |
453 | } | |
454 | ||
649bf3ca | 455 | static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) |
fb1d9738 | 456 | { |
d92d9851 TH |
457 | struct vmw_ttm_tt *vmw_be = |
458 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
459 | int ret; | |
460 | ||
461 | ret = vmw_ttm_map_dma(vmw_be); | |
462 | if (unlikely(ret != 0)) | |
463 | return ret; | |
135cba0d TH |
464 | |
465 | vmw_be->gmr_id = bo_mem->start; | |
6da768aa | 466 | vmw_be->mem_type = bo_mem->mem_type; |
135cba0d | 467 | |
6da768aa TH |
468 | switch (bo_mem->mem_type) { |
469 | case VMW_PL_GMR: | |
470 | return vmw_gmr_bind(vmw_be->dev_priv, &vmw_be->vsgt, | |
471 | ttm->num_pages, vmw_be->gmr_id); | |
472 | case VMW_PL_MOB: | |
473 | if (unlikely(vmw_be->mob == NULL)) { | |
474 | vmw_be->mob = | |
475 | vmw_mob_create(ttm->num_pages); | |
476 | if (unlikely(vmw_be->mob == NULL)) | |
477 | return -ENOMEM; | |
478 | } | |
479 | ||
480 | return vmw_mob_bind(vmw_be->dev_priv, vmw_be->mob, | |
481 | ttm->pages, ttm->num_pages, | |
482 | vmw_be->gmr_id); | |
483 | default: | |
484 | BUG(); | |
485 | } | |
486 | return 0; | |
fb1d9738 JB |
487 | } |
488 | ||
649bf3ca | 489 | static int vmw_ttm_unbind(struct ttm_tt *ttm) |
fb1d9738 | 490 | { |
d92d9851 TH |
491 | struct vmw_ttm_tt *vmw_be = |
492 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
135cba0d | 493 | |
6da768aa TH |
494 | switch (vmw_be->mem_type) { |
495 | case VMW_PL_GMR: | |
496 | vmw_gmr_unbind(vmw_be->dev_priv, vmw_be->gmr_id); | |
497 | break; | |
498 | case VMW_PL_MOB: | |
499 | vmw_mob_unbind(vmw_be->dev_priv, vmw_be->mob); | |
500 | break; | |
501 | default: | |
502 | BUG(); | |
503 | } | |
d92d9851 TH |
504 | |
505 | if (vmw_be->dev_priv->map_mode == vmw_dma_map_bind) | |
506 | vmw_ttm_unmap_dma(vmw_be); | |
507 | ||
fb1d9738 JB |
508 | return 0; |
509 | } | |
510 | ||
6da768aa | 511 | |
649bf3ca | 512 | static void vmw_ttm_destroy(struct ttm_tt *ttm) |
fb1d9738 | 513 | { |
d92d9851 TH |
514 | struct vmw_ttm_tt *vmw_be = |
515 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
516 | ||
517 | vmw_ttm_unmap_dma(vmw_be); | |
518 | if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent) | |
519 | ttm_dma_tt_fini(&vmw_be->dma_ttm); | |
520 | else | |
521 | ttm_tt_fini(ttm); | |
6da768aa TH |
522 | |
523 | if (vmw_be->mob) | |
524 | vmw_mob_destroy(vmw_be->mob); | |
525 | ||
fb1d9738 JB |
526 | kfree(vmw_be); |
527 | } | |
528 | ||
d92d9851 TH |
529 | static int vmw_ttm_populate(struct ttm_tt *ttm) |
530 | { | |
531 | struct vmw_ttm_tt *vmw_tt = | |
532 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
533 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
534 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
535 | int ret; | |
536 | ||
537 | if (ttm->state != tt_unpopulated) | |
538 | return 0; | |
539 | ||
540 | if (dev_priv->map_mode == vmw_dma_alloc_coherent) { | |
541 | size_t size = | |
542 | ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t)); | |
543 | ret = ttm_mem_global_alloc(glob, size, false, true); | |
544 | if (unlikely(ret != 0)) | |
545 | return ret; | |
546 | ||
547 | ret = ttm_dma_populate(&vmw_tt->dma_ttm, dev_priv->dev->dev); | |
548 | if (unlikely(ret != 0)) | |
549 | ttm_mem_global_free(glob, size); | |
550 | } else | |
551 | ret = ttm_pool_populate(ttm); | |
552 | ||
553 | return ret; | |
554 | } | |
555 | ||
556 | static void vmw_ttm_unpopulate(struct ttm_tt *ttm) | |
557 | { | |
558 | struct vmw_ttm_tt *vmw_tt = container_of(ttm, struct vmw_ttm_tt, | |
559 | dma_ttm.ttm); | |
560 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
561 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
562 | ||
6da768aa TH |
563 | |
564 | if (vmw_tt->mob) { | |
565 | vmw_mob_destroy(vmw_tt->mob); | |
566 | vmw_tt->mob = NULL; | |
567 | } | |
568 | ||
d92d9851 TH |
569 | vmw_ttm_unmap_dma(vmw_tt); |
570 | if (dev_priv->map_mode == vmw_dma_alloc_coherent) { | |
571 | size_t size = | |
572 | ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t)); | |
573 | ||
574 | ttm_dma_unpopulate(&vmw_tt->dma_ttm, dev_priv->dev->dev); | |
575 | ttm_mem_global_free(glob, size); | |
576 | } else | |
577 | ttm_pool_unpopulate(ttm); | |
578 | } | |
579 | ||
fb1d9738 | 580 | static struct ttm_backend_func vmw_ttm_func = { |
fb1d9738 JB |
581 | .bind = vmw_ttm_bind, |
582 | .unbind = vmw_ttm_unbind, | |
583 | .destroy = vmw_ttm_destroy, | |
584 | }; | |
585 | ||
8227622f | 586 | static struct ttm_tt *vmw_ttm_tt_create(struct ttm_bo_device *bdev, |
649bf3ca JG |
587 | unsigned long size, uint32_t page_flags, |
588 | struct page *dummy_read_page) | |
fb1d9738 | 589 | { |
649bf3ca | 590 | struct vmw_ttm_tt *vmw_be; |
d92d9851 | 591 | int ret; |
fb1d9738 | 592 | |
d92d9851 | 593 | vmw_be = kzalloc(sizeof(*vmw_be), GFP_KERNEL); |
fb1d9738 JB |
594 | if (!vmw_be) |
595 | return NULL; | |
596 | ||
d92d9851 | 597 | vmw_be->dma_ttm.ttm.func = &vmw_ttm_func; |
135cba0d | 598 | vmw_be->dev_priv = container_of(bdev, struct vmw_private, bdev); |
6da768aa | 599 | vmw_be->mob = NULL; |
fb1d9738 | 600 | |
d92d9851 TH |
601 | if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent) |
602 | ret = ttm_dma_tt_init(&vmw_be->dma_ttm, bdev, size, page_flags, | |
603 | dummy_read_page); | |
604 | else | |
605 | ret = ttm_tt_init(&vmw_be->dma_ttm.ttm, bdev, size, page_flags, | |
606 | dummy_read_page); | |
607 | if (unlikely(ret != 0)) | |
608 | goto out_no_init; | |
609 | ||
610 | return &vmw_be->dma_ttm.ttm; | |
611 | out_no_init: | |
612 | kfree(vmw_be); | |
613 | return NULL; | |
fb1d9738 JB |
614 | } |
615 | ||
8227622f | 616 | static int vmw_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) |
fb1d9738 JB |
617 | { |
618 | return 0; | |
619 | } | |
620 | ||
8227622f | 621 | static int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, |
fb1d9738 JB |
622 | struct ttm_mem_type_manager *man) |
623 | { | |
fb1d9738 JB |
624 | switch (type) { |
625 | case TTM_PL_SYSTEM: | |
626 | /* System memory */ | |
627 | ||
628 | man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; | |
135cba0d | 629 | man->available_caching = TTM_PL_FLAG_CACHED; |
fb1d9738 JB |
630 | man->default_caching = TTM_PL_FLAG_CACHED; |
631 | break; | |
632 | case TTM_PL_VRAM: | |
633 | /* "On-card" video ram */ | |
d961db75 | 634 | man->func = &ttm_bo_manager_func; |
fb1d9738 | 635 | man->gpu_offset = 0; |
96bf8b87 | 636 | man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE; |
135cba0d TH |
637 | man->available_caching = TTM_PL_FLAG_CACHED; |
638 | man->default_caching = TTM_PL_FLAG_CACHED; | |
639 | break; | |
640 | case VMW_PL_GMR: | |
6da768aa | 641 | case VMW_PL_MOB: |
135cba0d TH |
642 | /* |
643 | * "Guest Memory Regions" is an aperture like feature with | |
644 | * one slot per bo. There is an upper limit of the number of | |
645 | * slots as well as the bo size. | |
646 | */ | |
647 | man->func = &vmw_gmrid_manager_func; | |
648 | man->gpu_offset = 0; | |
649 | man->flags = TTM_MEMTYPE_FLAG_CMA | TTM_MEMTYPE_FLAG_MAPPABLE; | |
650 | man->available_caching = TTM_PL_FLAG_CACHED; | |
651 | man->default_caching = TTM_PL_FLAG_CACHED; | |
fb1d9738 JB |
652 | break; |
653 | default: | |
654 | DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); | |
655 | return -EINVAL; | |
656 | } | |
657 | return 0; | |
658 | } | |
659 | ||
8227622f | 660 | static void vmw_evict_flags(struct ttm_buffer_object *bo, |
fb1d9738 JB |
661 | struct ttm_placement *placement) |
662 | { | |
663 | *placement = vmw_sys_placement; | |
664 | } | |
665 | ||
fb1d9738 JB |
666 | static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp) |
667 | { | |
d08a9b9c TH |
668 | struct ttm_object_file *tfile = |
669 | vmw_fpriv((struct drm_file *)filp->private_data)->tfile; | |
670 | ||
671 | return vmw_user_dmabuf_verify_access(bo, tfile); | |
fb1d9738 JB |
672 | } |
673 | ||
96bf8b87 JG |
674 | static int vmw_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) |
675 | { | |
676 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
677 | struct vmw_private *dev_priv = container_of(bdev, struct vmw_private, bdev); | |
678 | ||
679 | mem->bus.addr = NULL; | |
680 | mem->bus.is_iomem = false; | |
681 | mem->bus.offset = 0; | |
682 | mem->bus.size = mem->num_pages << PAGE_SHIFT; | |
683 | mem->bus.base = 0; | |
684 | if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) | |
685 | return -EINVAL; | |
686 | switch (mem->mem_type) { | |
687 | case TTM_PL_SYSTEM: | |
135cba0d | 688 | case VMW_PL_GMR: |
6da768aa | 689 | case VMW_PL_MOB: |
96bf8b87 JG |
690 | return 0; |
691 | case TTM_PL_VRAM: | |
d961db75 | 692 | mem->bus.offset = mem->start << PAGE_SHIFT; |
96bf8b87 JG |
693 | mem->bus.base = dev_priv->vram_start; |
694 | mem->bus.is_iomem = true; | |
695 | break; | |
696 | default: | |
697 | return -EINVAL; | |
698 | } | |
699 | return 0; | |
700 | } | |
701 | ||
702 | static void vmw_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
703 | { | |
704 | } | |
705 | ||
706 | static int vmw_ttm_fault_reserve_notify(struct ttm_buffer_object *bo) | |
707 | { | |
708 | return 0; | |
709 | } | |
710 | ||
fb1d9738 JB |
711 | /** |
712 | * FIXME: We're using the old vmware polling method to sync. | |
713 | * Do this with fences instead. | |
714 | */ | |
715 | ||
716 | static void *vmw_sync_obj_ref(void *sync_obj) | |
717 | { | |
ae2a1040 TH |
718 | |
719 | return (void *) | |
720 | vmw_fence_obj_reference((struct vmw_fence_obj *) sync_obj); | |
fb1d9738 JB |
721 | } |
722 | ||
723 | static void vmw_sync_obj_unref(void **sync_obj) | |
724 | { | |
ae2a1040 | 725 | vmw_fence_obj_unreference((struct vmw_fence_obj **) sync_obj); |
fb1d9738 JB |
726 | } |
727 | ||
dedfdffd | 728 | static int vmw_sync_obj_flush(void *sync_obj) |
fb1d9738 | 729 | { |
ae2a1040 | 730 | vmw_fence_obj_flush((struct vmw_fence_obj *) sync_obj); |
fb1d9738 JB |
731 | return 0; |
732 | } | |
733 | ||
dedfdffd | 734 | static bool vmw_sync_obj_signaled(void *sync_obj) |
fb1d9738 | 735 | { |
ae2a1040 | 736 | return vmw_fence_obj_signaled((struct vmw_fence_obj *) sync_obj, |
be013367 | 737 | DRM_VMW_FENCE_FLAG_EXEC); |
fb1d9738 | 738 | |
fb1d9738 JB |
739 | } |
740 | ||
dedfdffd | 741 | static int vmw_sync_obj_wait(void *sync_obj, bool lazy, bool interruptible) |
fb1d9738 | 742 | { |
ae2a1040 | 743 | return vmw_fence_obj_wait((struct vmw_fence_obj *) sync_obj, |
be013367 | 744 | DRM_VMW_FENCE_FLAG_EXEC, |
ae2a1040 TH |
745 | lazy, interruptible, |
746 | VMW_FENCE_WAIT_TIMEOUT); | |
fb1d9738 JB |
747 | } |
748 | ||
6da768aa TH |
749 | /** |
750 | * vmw_move_notify - TTM move_notify_callback | |
751 | * | |
752 | * @bo: The TTM buffer object about to move. | |
753 | * @mem: The truct ttm_mem_reg indicating to what memory | |
754 | * region the move is taking place. | |
755 | * | |
756 | * Calls move_notify for all subsystems needing it. | |
757 | * (currently only resources). | |
758 | */ | |
759 | static void vmw_move_notify(struct ttm_buffer_object *bo, | |
760 | struct ttm_mem_reg *mem) | |
761 | { | |
762 | vmw_resource_move_notify(bo, mem); | |
763 | } | |
764 | ||
765 | ||
766 | /** | |
767 | * vmw_swap_notify - TTM move_notify_callback | |
768 | * | |
769 | * @bo: The TTM buffer object about to be swapped out. | |
770 | */ | |
771 | static void vmw_swap_notify(struct ttm_buffer_object *bo) | |
772 | { | |
773 | struct ttm_bo_device *bdev = bo->bdev; | |
774 | ||
775 | spin_lock(&bdev->fence_lock); | |
776 | ttm_bo_wait(bo, false, false, false); | |
777 | spin_unlock(&bdev->fence_lock); | |
778 | } | |
779 | ||
780 | ||
fb1d9738 | 781 | struct ttm_bo_driver vmw_bo_driver = { |
649bf3ca | 782 | .ttm_tt_create = &vmw_ttm_tt_create, |
d92d9851 TH |
783 | .ttm_tt_populate = &vmw_ttm_populate, |
784 | .ttm_tt_unpopulate = &vmw_ttm_unpopulate, | |
fb1d9738 JB |
785 | .invalidate_caches = vmw_invalidate_caches, |
786 | .init_mem_type = vmw_init_mem_type, | |
787 | .evict_flags = vmw_evict_flags, | |
788 | .move = NULL, | |
789 | .verify_access = vmw_verify_access, | |
790 | .sync_obj_signaled = vmw_sync_obj_signaled, | |
791 | .sync_obj_wait = vmw_sync_obj_wait, | |
792 | .sync_obj_flush = vmw_sync_obj_flush, | |
793 | .sync_obj_unref = vmw_sync_obj_unref, | |
effe1105 | 794 | .sync_obj_ref = vmw_sync_obj_ref, |
6da768aa TH |
795 | .move_notify = vmw_move_notify, |
796 | .swap_notify = vmw_swap_notify, | |
96bf8b87 JG |
797 | .fault_reserve_notify = &vmw_ttm_fault_reserve_notify, |
798 | .io_mem_reserve = &vmw_ttm_io_mem_reserve, | |
799 | .io_mem_free = &vmw_ttm_io_mem_free, | |
fb1d9738 | 800 | }; |