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fb1d9738 JB |
1 | /************************************************************************** |
2 | * | |
54fbde8a | 3 | * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA |
fb1d9738 JB |
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 | 32 | |
f1217ed0 CK |
33 | static struct ttm_place vram_placement_flags = { |
34 | .fpfn = 0, | |
35 | .lpfn = 0, | |
36 | .flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | |
37 | }; | |
fb1d9738 | 38 | |
f1217ed0 CK |
39 | static struct ttm_place vram_ne_placement_flags = { |
40 | .fpfn = 0, | |
41 | .lpfn = 0, | |
42 | .flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT | |
43 | }; | |
fb1d9738 | 44 | |
f1217ed0 CK |
45 | static struct ttm_place sys_placement_flags = { |
46 | .fpfn = 0, | |
47 | .lpfn = 0, | |
48 | .flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED | |
49 | }; | |
3530bdc3 | 50 | |
f1217ed0 CK |
51 | static struct ttm_place sys_ne_placement_flags = { |
52 | .fpfn = 0, | |
53 | .lpfn = 0, | |
54 | .flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT | |
55 | }; | |
135cba0d | 56 | |
f1217ed0 CK |
57 | static struct ttm_place gmr_placement_flags = { |
58 | .fpfn = 0, | |
59 | .lpfn = 0, | |
60 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | |
61 | }; | |
d991ef03 | 62 | |
f1217ed0 CK |
63 | static struct ttm_place gmr_ne_placement_flags = { |
64 | .fpfn = 0, | |
65 | .lpfn = 0, | |
66 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT | |
67 | }; | |
6da768aa | 68 | |
f1217ed0 | 69 | static struct ttm_place mob_placement_flags = { |
fb1d9738 JB |
70 | .fpfn = 0, |
71 | .lpfn = 0, | |
f1217ed0 CK |
72 | .flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED |
73 | }; | |
74 | ||
3eab3d9e TH |
75 | static struct ttm_place mob_ne_placement_flags = { |
76 | .fpfn = 0, | |
77 | .lpfn = 0, | |
78 | .flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT | |
79 | }; | |
80 | ||
f1217ed0 | 81 | struct ttm_placement vmw_vram_placement = { |
fb1d9738 JB |
82 | .num_placement = 1, |
83 | .placement = &vram_placement_flags, | |
84 | .num_busy_placement = 1, | |
85 | .busy_placement = &vram_placement_flags | |
86 | }; | |
87 | ||
f1217ed0 CK |
88 | static struct ttm_place vram_gmr_placement_flags[] = { |
89 | { | |
90 | .fpfn = 0, | |
91 | .lpfn = 0, | |
92 | .flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | |
93 | }, { | |
94 | .fpfn = 0, | |
95 | .lpfn = 0, | |
96 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | |
97 | } | |
135cba0d TH |
98 | }; |
99 | ||
f1217ed0 CK |
100 | static struct ttm_place gmr_vram_placement_flags[] = { |
101 | { | |
102 | .fpfn = 0, | |
103 | .lpfn = 0, | |
104 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | |
105 | }, { | |
106 | .fpfn = 0, | |
107 | .lpfn = 0, | |
108 | .flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | |
109 | } | |
5bb39e81 TH |
110 | }; |
111 | ||
135cba0d | 112 | struct ttm_placement vmw_vram_gmr_placement = { |
135cba0d TH |
113 | .num_placement = 2, |
114 | .placement = vram_gmr_placement_flags, | |
115 | .num_busy_placement = 1, | |
116 | .busy_placement = &gmr_placement_flags | |
117 | }; | |
118 | ||
f1217ed0 CK |
119 | static struct ttm_place vram_gmr_ne_placement_flags[] = { |
120 | { | |
121 | .fpfn = 0, | |
122 | .lpfn = 0, | |
123 | .flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | | |
124 | TTM_PL_FLAG_NO_EVICT | |
125 | }, { | |
126 | .fpfn = 0, | |
127 | .lpfn = 0, | |
128 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | | |
129 | TTM_PL_FLAG_NO_EVICT | |
130 | } | |
d991ef03 JB |
131 | }; |
132 | ||
133 | struct ttm_placement vmw_vram_gmr_ne_placement = { | |
d991ef03 JB |
134 | .num_placement = 2, |
135 | .placement = vram_gmr_ne_placement_flags, | |
136 | .num_busy_placement = 1, | |
137 | .busy_placement = &gmr_ne_placement_flags | |
138 | }; | |
139 | ||
8ba5152a | 140 | struct ttm_placement vmw_vram_sys_placement = { |
8ba5152a TH |
141 | .num_placement = 1, |
142 | .placement = &vram_placement_flags, | |
143 | .num_busy_placement = 1, | |
144 | .busy_placement = &sys_placement_flags | |
145 | }; | |
146 | ||
fb1d9738 | 147 | struct ttm_placement vmw_vram_ne_placement = { |
fb1d9738 JB |
148 | .num_placement = 1, |
149 | .placement = &vram_ne_placement_flags, | |
150 | .num_busy_placement = 1, | |
151 | .busy_placement = &vram_ne_placement_flags | |
152 | }; | |
153 | ||
154 | struct ttm_placement vmw_sys_placement = { | |
fb1d9738 JB |
155 | .num_placement = 1, |
156 | .placement = &sys_placement_flags, | |
157 | .num_busy_placement = 1, | |
158 | .busy_placement = &sys_placement_flags | |
159 | }; | |
160 | ||
3530bdc3 | 161 | struct ttm_placement vmw_sys_ne_placement = { |
3530bdc3 TH |
162 | .num_placement = 1, |
163 | .placement = &sys_ne_placement_flags, | |
164 | .num_busy_placement = 1, | |
165 | .busy_placement = &sys_ne_placement_flags | |
166 | }; | |
167 | ||
f1217ed0 CK |
168 | static struct ttm_place evictable_placement_flags[] = { |
169 | { | |
170 | .fpfn = 0, | |
171 | .lpfn = 0, | |
172 | .flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED | |
173 | }, { | |
174 | .fpfn = 0, | |
175 | .lpfn = 0, | |
176 | .flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | |
177 | }, { | |
178 | .fpfn = 0, | |
179 | .lpfn = 0, | |
180 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | |
181 | }, { | |
182 | .fpfn = 0, | |
183 | .lpfn = 0, | |
184 | .flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED | |
185 | } | |
d991ef03 JB |
186 | }; |
187 | ||
188 | struct ttm_placement vmw_evictable_placement = { | |
6da768aa | 189 | .num_placement = 4, |
d991ef03 JB |
190 | .placement = evictable_placement_flags, |
191 | .num_busy_placement = 1, | |
192 | .busy_placement = &sys_placement_flags | |
193 | }; | |
194 | ||
5bb39e81 | 195 | struct ttm_placement vmw_srf_placement = { |
5bb39e81 TH |
196 | .num_placement = 1, |
197 | .num_busy_placement = 2, | |
198 | .placement = &gmr_placement_flags, | |
199 | .busy_placement = gmr_vram_placement_flags | |
200 | }; | |
201 | ||
6da768aa | 202 | struct ttm_placement vmw_mob_placement = { |
6da768aa TH |
203 | .num_placement = 1, |
204 | .num_busy_placement = 1, | |
205 | .placement = &mob_placement_flags, | |
206 | .busy_placement = &mob_placement_flags | |
207 | }; | |
208 | ||
3eab3d9e TH |
209 | struct ttm_placement vmw_mob_ne_placement = { |
210 | .num_placement = 1, | |
211 | .num_busy_placement = 1, | |
212 | .placement = &mob_ne_placement_flags, | |
213 | .busy_placement = &mob_ne_placement_flags | |
214 | }; | |
215 | ||
649bf3ca | 216 | struct vmw_ttm_tt { |
d92d9851 | 217 | struct ttm_dma_tt dma_ttm; |
135cba0d TH |
218 | struct vmw_private *dev_priv; |
219 | int gmr_id; | |
6da768aa TH |
220 | struct vmw_mob *mob; |
221 | int mem_type; | |
d92d9851 TH |
222 | struct sg_table sgt; |
223 | struct vmw_sg_table vsgt; | |
224 | uint64_t sg_alloc_size; | |
225 | bool mapped; | |
fb1d9738 JB |
226 | }; |
227 | ||
308d17ef TH |
228 | const size_t vmw_tt_size = sizeof(struct vmw_ttm_tt); |
229 | ||
d92d9851 TH |
230 | /** |
231 | * Helper functions to advance a struct vmw_piter iterator. | |
232 | * | |
233 | * @viter: Pointer to the iterator. | |
234 | * | |
235 | * These functions return false if past the end of the list, | |
236 | * true otherwise. Functions are selected depending on the current | |
237 | * DMA mapping mode. | |
238 | */ | |
239 | static bool __vmw_piter_non_sg_next(struct vmw_piter *viter) | |
240 | { | |
241 | return ++(viter->i) < viter->num_pages; | |
242 | } | |
243 | ||
244 | static bool __vmw_piter_sg_next(struct vmw_piter *viter) | |
245 | { | |
246 | return __sg_page_iter_next(&viter->iter); | |
247 | } | |
248 | ||
249 | ||
250 | /** | |
251 | * Helper functions to return a pointer to the current page. | |
252 | * | |
253 | * @viter: Pointer to the iterator | |
254 | * | |
255 | * These functions return a pointer to the page currently | |
256 | * pointed to by @viter. Functions are selected depending on the | |
257 | * current mapping mode. | |
258 | */ | |
259 | static struct page *__vmw_piter_non_sg_page(struct vmw_piter *viter) | |
260 | { | |
261 | return viter->pages[viter->i]; | |
262 | } | |
263 | ||
264 | static struct page *__vmw_piter_sg_page(struct vmw_piter *viter) | |
265 | { | |
266 | return sg_page_iter_page(&viter->iter); | |
267 | } | |
268 | ||
269 | ||
270 | /** | |
271 | * Helper functions to return the DMA address of the current page. | |
272 | * | |
273 | * @viter: Pointer to the iterator | |
274 | * | |
275 | * These functions return the DMA address of the page currently | |
276 | * pointed to by @viter. Functions are selected depending on the | |
277 | * current mapping mode. | |
278 | */ | |
279 | static dma_addr_t __vmw_piter_phys_addr(struct vmw_piter *viter) | |
280 | { | |
281 | return page_to_phys(viter->pages[viter->i]); | |
282 | } | |
283 | ||
284 | static dma_addr_t __vmw_piter_dma_addr(struct vmw_piter *viter) | |
285 | { | |
286 | return viter->addrs[viter->i]; | |
287 | } | |
288 | ||
289 | static dma_addr_t __vmw_piter_sg_addr(struct vmw_piter *viter) | |
290 | { | |
291 | return sg_page_iter_dma_address(&viter->iter); | |
292 | } | |
293 | ||
294 | ||
295 | /** | |
296 | * vmw_piter_start - Initialize a struct vmw_piter. | |
297 | * | |
298 | * @viter: Pointer to the iterator to initialize | |
299 | * @vsgt: Pointer to a struct vmw_sg_table to initialize from | |
300 | * | |
301 | * Note that we're following the convention of __sg_page_iter_start, so that | |
302 | * the iterator doesn't point to a valid page after initialization; it has | |
303 | * to be advanced one step first. | |
304 | */ | |
305 | void vmw_piter_start(struct vmw_piter *viter, const struct vmw_sg_table *vsgt, | |
306 | unsigned long p_offset) | |
307 | { | |
308 | viter->i = p_offset - 1; | |
309 | viter->num_pages = vsgt->num_pages; | |
310 | switch (vsgt->mode) { | |
311 | case vmw_dma_phys: | |
312 | viter->next = &__vmw_piter_non_sg_next; | |
313 | viter->dma_address = &__vmw_piter_phys_addr; | |
314 | viter->page = &__vmw_piter_non_sg_page; | |
315 | viter->pages = vsgt->pages; | |
316 | break; | |
317 | case vmw_dma_alloc_coherent: | |
318 | viter->next = &__vmw_piter_non_sg_next; | |
319 | viter->dma_address = &__vmw_piter_dma_addr; | |
320 | viter->page = &__vmw_piter_non_sg_page; | |
321 | viter->addrs = vsgt->addrs; | |
0fd53cfb | 322 | viter->pages = vsgt->pages; |
d92d9851 TH |
323 | break; |
324 | case vmw_dma_map_populate: | |
325 | case vmw_dma_map_bind: | |
326 | viter->next = &__vmw_piter_sg_next; | |
327 | viter->dma_address = &__vmw_piter_sg_addr; | |
328 | viter->page = &__vmw_piter_sg_page; | |
329 | __sg_page_iter_start(&viter->iter, vsgt->sgt->sgl, | |
330 | vsgt->sgt->orig_nents, p_offset); | |
331 | break; | |
332 | default: | |
333 | BUG(); | |
334 | } | |
335 | } | |
336 | ||
337 | /** | |
338 | * vmw_ttm_unmap_from_dma - unmap device addresses previsouly mapped for | |
339 | * TTM pages | |
340 | * | |
341 | * @vmw_tt: Pointer to a struct vmw_ttm_backend | |
342 | * | |
343 | * Used to free dma mappings previously mapped by vmw_ttm_map_for_dma. | |
344 | */ | |
345 | static void vmw_ttm_unmap_from_dma(struct vmw_ttm_tt *vmw_tt) | |
346 | { | |
347 | struct device *dev = vmw_tt->dev_priv->dev->dev; | |
348 | ||
349 | dma_unmap_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.nents, | |
350 | DMA_BIDIRECTIONAL); | |
351 | vmw_tt->sgt.nents = vmw_tt->sgt.orig_nents; | |
352 | } | |
353 | ||
354 | /** | |
355 | * vmw_ttm_map_for_dma - map TTM pages to get device addresses | |
356 | * | |
357 | * @vmw_tt: Pointer to a struct vmw_ttm_backend | |
358 | * | |
359 | * This function is used to get device addresses from the kernel DMA layer. | |
360 | * However, it's violating the DMA API in that when this operation has been | |
361 | * performed, it's illegal for the CPU to write to the pages without first | |
362 | * unmapping the DMA mappings, or calling dma_sync_sg_for_cpu(). It is | |
363 | * therefore only legal to call this function if we know that the function | |
364 | * dma_sync_sg_for_cpu() is a NOP, and dma_sync_sg_for_device() is at most | |
365 | * a CPU write buffer flush. | |
366 | */ | |
367 | static int vmw_ttm_map_for_dma(struct vmw_ttm_tt *vmw_tt) | |
368 | { | |
369 | struct device *dev = vmw_tt->dev_priv->dev->dev; | |
370 | int ret; | |
371 | ||
372 | ret = dma_map_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.orig_nents, | |
373 | DMA_BIDIRECTIONAL); | |
374 | if (unlikely(ret == 0)) | |
375 | return -ENOMEM; | |
376 | ||
377 | vmw_tt->sgt.nents = ret; | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
382 | /** | |
383 | * vmw_ttm_map_dma - Make sure TTM pages are visible to the device | |
384 | * | |
385 | * @vmw_tt: Pointer to a struct vmw_ttm_tt | |
386 | * | |
387 | * Select the correct function for and make sure the TTM pages are | |
388 | * visible to the device. Allocate storage for the device mappings. | |
389 | * If a mapping has already been performed, indicated by the storage | |
390 | * pointer being non NULL, the function returns success. | |
391 | */ | |
392 | static int vmw_ttm_map_dma(struct vmw_ttm_tt *vmw_tt) | |
393 | { | |
394 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
395 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
396 | struct vmw_sg_table *vsgt = &vmw_tt->vsgt; | |
397 | struct vmw_piter iter; | |
398 | dma_addr_t old; | |
399 | int ret = 0; | |
400 | static size_t sgl_size; | |
401 | static size_t sgt_size; | |
402 | ||
403 | if (vmw_tt->mapped) | |
404 | return 0; | |
405 | ||
406 | vsgt->mode = dev_priv->map_mode; | |
407 | vsgt->pages = vmw_tt->dma_ttm.ttm.pages; | |
408 | vsgt->num_pages = vmw_tt->dma_ttm.ttm.num_pages; | |
409 | vsgt->addrs = vmw_tt->dma_ttm.dma_address; | |
410 | vsgt->sgt = &vmw_tt->sgt; | |
411 | ||
412 | switch (dev_priv->map_mode) { | |
413 | case vmw_dma_map_bind: | |
414 | case vmw_dma_map_populate: | |
415 | if (unlikely(!sgl_size)) { | |
416 | sgl_size = ttm_round_pot(sizeof(struct scatterlist)); | |
417 | sgt_size = ttm_round_pot(sizeof(struct sg_table)); | |
418 | } | |
419 | vmw_tt->sg_alloc_size = sgt_size + sgl_size * vsgt->num_pages; | |
420 | ret = ttm_mem_global_alloc(glob, vmw_tt->sg_alloc_size, false, | |
421 | true); | |
422 | if (unlikely(ret != 0)) | |
423 | return ret; | |
424 | ||
425 | ret = sg_alloc_table_from_pages(&vmw_tt->sgt, vsgt->pages, | |
426 | vsgt->num_pages, 0, | |
427 | (unsigned long) | |
428 | vsgt->num_pages << PAGE_SHIFT, | |
429 | GFP_KERNEL); | |
430 | if (unlikely(ret != 0)) | |
431 | goto out_sg_alloc_fail; | |
432 | ||
433 | if (vsgt->num_pages > vmw_tt->sgt.nents) { | |
434 | uint64_t over_alloc = | |
435 | sgl_size * (vsgt->num_pages - | |
436 | vmw_tt->sgt.nents); | |
437 | ||
438 | ttm_mem_global_free(glob, over_alloc); | |
439 | vmw_tt->sg_alloc_size -= over_alloc; | |
440 | } | |
441 | ||
442 | ret = vmw_ttm_map_for_dma(vmw_tt); | |
443 | if (unlikely(ret != 0)) | |
444 | goto out_map_fail; | |
445 | ||
446 | break; | |
447 | default: | |
448 | break; | |
449 | } | |
450 | ||
451 | old = ~((dma_addr_t) 0); | |
452 | vmw_tt->vsgt.num_regions = 0; | |
453 | for (vmw_piter_start(&iter, vsgt, 0); vmw_piter_next(&iter);) { | |
454 | dma_addr_t cur = vmw_piter_dma_addr(&iter); | |
455 | ||
456 | if (cur != old + PAGE_SIZE) | |
457 | vmw_tt->vsgt.num_regions++; | |
458 | old = cur; | |
459 | } | |
460 | ||
461 | vmw_tt->mapped = true; | |
462 | return 0; | |
463 | ||
464 | out_map_fail: | |
465 | sg_free_table(vmw_tt->vsgt.sgt); | |
466 | vmw_tt->vsgt.sgt = NULL; | |
467 | out_sg_alloc_fail: | |
468 | ttm_mem_global_free(glob, vmw_tt->sg_alloc_size); | |
469 | return ret; | |
470 | } | |
471 | ||
472 | /** | |
473 | * vmw_ttm_unmap_dma - Tear down any TTM page device mappings | |
474 | * | |
475 | * @vmw_tt: Pointer to a struct vmw_ttm_tt | |
476 | * | |
477 | * Tear down any previously set up device DMA mappings and free | |
478 | * any storage space allocated for them. If there are no mappings set up, | |
479 | * this function is a NOP. | |
480 | */ | |
481 | static void vmw_ttm_unmap_dma(struct vmw_ttm_tt *vmw_tt) | |
482 | { | |
483 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
484 | ||
485 | if (!vmw_tt->vsgt.sgt) | |
486 | return; | |
487 | ||
488 | switch (dev_priv->map_mode) { | |
489 | case vmw_dma_map_bind: | |
490 | case vmw_dma_map_populate: | |
491 | vmw_ttm_unmap_from_dma(vmw_tt); | |
492 | sg_free_table(vmw_tt->vsgt.sgt); | |
493 | vmw_tt->vsgt.sgt = NULL; | |
494 | ttm_mem_global_free(vmw_mem_glob(dev_priv), | |
495 | vmw_tt->sg_alloc_size); | |
496 | break; | |
497 | default: | |
498 | break; | |
499 | } | |
500 | vmw_tt->mapped = false; | |
501 | } | |
502 | ||
0fd53cfb TH |
503 | |
504 | /** | |
505 | * vmw_bo_map_dma - Make sure buffer object pages are visible to the device | |
506 | * | |
507 | * @bo: Pointer to a struct ttm_buffer_object | |
508 | * | |
509 | * Wrapper around vmw_ttm_map_dma, that takes a TTM buffer object pointer | |
510 | * instead of a pointer to a struct vmw_ttm_backend as argument. | |
511 | * Note that the buffer object must be either pinned or reserved before | |
512 | * calling this function. | |
513 | */ | |
514 | int vmw_bo_map_dma(struct ttm_buffer_object *bo) | |
515 | { | |
516 | struct vmw_ttm_tt *vmw_tt = | |
517 | container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
518 | ||
519 | return vmw_ttm_map_dma(vmw_tt); | |
520 | } | |
521 | ||
522 | ||
523 | /** | |
524 | * vmw_bo_unmap_dma - Make sure buffer object pages are visible to the device | |
525 | * | |
526 | * @bo: Pointer to a struct ttm_buffer_object | |
527 | * | |
528 | * Wrapper around vmw_ttm_unmap_dma, that takes a TTM buffer object pointer | |
529 | * instead of a pointer to a struct vmw_ttm_backend as argument. | |
530 | */ | |
531 | void vmw_bo_unmap_dma(struct ttm_buffer_object *bo) | |
532 | { | |
533 | struct vmw_ttm_tt *vmw_tt = | |
534 | container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
535 | ||
536 | vmw_ttm_unmap_dma(vmw_tt); | |
537 | } | |
538 | ||
539 | ||
540 | /** | |
541 | * vmw_bo_sg_table - Return a struct vmw_sg_table object for a | |
542 | * TTM buffer object | |
543 | * | |
544 | * @bo: Pointer to a struct ttm_buffer_object | |
545 | * | |
546 | * Returns a pointer to a struct vmw_sg_table object. The object should | |
547 | * not be freed after use. | |
548 | * Note that for the device addresses to be valid, the buffer object must | |
549 | * either be reserved or pinned. | |
550 | */ | |
551 | const struct vmw_sg_table *vmw_bo_sg_table(struct ttm_buffer_object *bo) | |
552 | { | |
553 | struct vmw_ttm_tt *vmw_tt = | |
554 | container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
555 | ||
556 | return &vmw_tt->vsgt; | |
557 | } | |
558 | ||
559 | ||
649bf3ca | 560 | static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem) |
fb1d9738 | 561 | { |
d92d9851 TH |
562 | struct vmw_ttm_tt *vmw_be = |
563 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
564 | int ret; | |
565 | ||
566 | ret = vmw_ttm_map_dma(vmw_be); | |
567 | if (unlikely(ret != 0)) | |
568 | return ret; | |
135cba0d TH |
569 | |
570 | vmw_be->gmr_id = bo_mem->start; | |
6da768aa | 571 | vmw_be->mem_type = bo_mem->mem_type; |
135cba0d | 572 | |
6da768aa TH |
573 | switch (bo_mem->mem_type) { |
574 | case VMW_PL_GMR: | |
575 | return vmw_gmr_bind(vmw_be->dev_priv, &vmw_be->vsgt, | |
576 | ttm->num_pages, vmw_be->gmr_id); | |
577 | case VMW_PL_MOB: | |
578 | if (unlikely(vmw_be->mob == NULL)) { | |
579 | vmw_be->mob = | |
580 | vmw_mob_create(ttm->num_pages); | |
581 | if (unlikely(vmw_be->mob == NULL)) | |
582 | return -ENOMEM; | |
583 | } | |
584 | ||
585 | return vmw_mob_bind(vmw_be->dev_priv, vmw_be->mob, | |
0fd53cfb | 586 | &vmw_be->vsgt, ttm->num_pages, |
6da768aa TH |
587 | vmw_be->gmr_id); |
588 | default: | |
589 | BUG(); | |
590 | } | |
591 | return 0; | |
fb1d9738 JB |
592 | } |
593 | ||
649bf3ca | 594 | static int vmw_ttm_unbind(struct ttm_tt *ttm) |
fb1d9738 | 595 | { |
d92d9851 TH |
596 | struct vmw_ttm_tt *vmw_be = |
597 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
135cba0d | 598 | |
6da768aa TH |
599 | switch (vmw_be->mem_type) { |
600 | case VMW_PL_GMR: | |
601 | vmw_gmr_unbind(vmw_be->dev_priv, vmw_be->gmr_id); | |
602 | break; | |
603 | case VMW_PL_MOB: | |
604 | vmw_mob_unbind(vmw_be->dev_priv, vmw_be->mob); | |
605 | break; | |
606 | default: | |
607 | BUG(); | |
608 | } | |
d92d9851 TH |
609 | |
610 | if (vmw_be->dev_priv->map_mode == vmw_dma_map_bind) | |
611 | vmw_ttm_unmap_dma(vmw_be); | |
612 | ||
fb1d9738 JB |
613 | return 0; |
614 | } | |
615 | ||
6da768aa | 616 | |
649bf3ca | 617 | static void vmw_ttm_destroy(struct ttm_tt *ttm) |
fb1d9738 | 618 | { |
d92d9851 TH |
619 | struct vmw_ttm_tt *vmw_be = |
620 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
621 | ||
622 | vmw_ttm_unmap_dma(vmw_be); | |
623 | if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent) | |
624 | ttm_dma_tt_fini(&vmw_be->dma_ttm); | |
625 | else | |
626 | ttm_tt_fini(ttm); | |
6da768aa TH |
627 | |
628 | if (vmw_be->mob) | |
629 | vmw_mob_destroy(vmw_be->mob); | |
630 | ||
fb1d9738 JB |
631 | kfree(vmw_be); |
632 | } | |
633 | ||
0fd53cfb | 634 | |
d92d9851 TH |
635 | static int vmw_ttm_populate(struct ttm_tt *ttm) |
636 | { | |
637 | struct vmw_ttm_tt *vmw_tt = | |
638 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
639 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
640 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
641 | int ret; | |
642 | ||
643 | if (ttm->state != tt_unpopulated) | |
644 | return 0; | |
645 | ||
646 | if (dev_priv->map_mode == vmw_dma_alloc_coherent) { | |
647 | size_t size = | |
648 | ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t)); | |
649 | ret = ttm_mem_global_alloc(glob, size, false, true); | |
650 | if (unlikely(ret != 0)) | |
651 | return ret; | |
652 | ||
653 | ret = ttm_dma_populate(&vmw_tt->dma_ttm, dev_priv->dev->dev); | |
654 | if (unlikely(ret != 0)) | |
655 | ttm_mem_global_free(glob, size); | |
656 | } else | |
657 | ret = ttm_pool_populate(ttm); | |
658 | ||
659 | return ret; | |
660 | } | |
661 | ||
662 | static void vmw_ttm_unpopulate(struct ttm_tt *ttm) | |
663 | { | |
664 | struct vmw_ttm_tt *vmw_tt = container_of(ttm, struct vmw_ttm_tt, | |
665 | dma_ttm.ttm); | |
666 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
667 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
668 | ||
6da768aa TH |
669 | |
670 | if (vmw_tt->mob) { | |
671 | vmw_mob_destroy(vmw_tt->mob); | |
672 | vmw_tt->mob = NULL; | |
673 | } | |
674 | ||
d92d9851 TH |
675 | vmw_ttm_unmap_dma(vmw_tt); |
676 | if (dev_priv->map_mode == vmw_dma_alloc_coherent) { | |
677 | size_t size = | |
678 | ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t)); | |
679 | ||
680 | ttm_dma_unpopulate(&vmw_tt->dma_ttm, dev_priv->dev->dev); | |
681 | ttm_mem_global_free(glob, size); | |
682 | } else | |
683 | ttm_pool_unpopulate(ttm); | |
684 | } | |
685 | ||
fb1d9738 | 686 | static struct ttm_backend_func vmw_ttm_func = { |
fb1d9738 JB |
687 | .bind = vmw_ttm_bind, |
688 | .unbind = vmw_ttm_unbind, | |
689 | .destroy = vmw_ttm_destroy, | |
690 | }; | |
691 | ||
8227622f | 692 | static struct ttm_tt *vmw_ttm_tt_create(struct ttm_bo_device *bdev, |
649bf3ca JG |
693 | unsigned long size, uint32_t page_flags, |
694 | struct page *dummy_read_page) | |
fb1d9738 | 695 | { |
649bf3ca | 696 | struct vmw_ttm_tt *vmw_be; |
d92d9851 | 697 | int ret; |
fb1d9738 | 698 | |
d92d9851 | 699 | vmw_be = kzalloc(sizeof(*vmw_be), GFP_KERNEL); |
fb1d9738 JB |
700 | if (!vmw_be) |
701 | return NULL; | |
702 | ||
d92d9851 | 703 | vmw_be->dma_ttm.ttm.func = &vmw_ttm_func; |
135cba0d | 704 | vmw_be->dev_priv = container_of(bdev, struct vmw_private, bdev); |
6da768aa | 705 | vmw_be->mob = NULL; |
fb1d9738 | 706 | |
d92d9851 TH |
707 | if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent) |
708 | ret = ttm_dma_tt_init(&vmw_be->dma_ttm, bdev, size, page_flags, | |
709 | dummy_read_page); | |
710 | else | |
711 | ret = ttm_tt_init(&vmw_be->dma_ttm.ttm, bdev, size, page_flags, | |
712 | dummy_read_page); | |
713 | if (unlikely(ret != 0)) | |
714 | goto out_no_init; | |
715 | ||
716 | return &vmw_be->dma_ttm.ttm; | |
717 | out_no_init: | |
718 | kfree(vmw_be); | |
719 | return NULL; | |
fb1d9738 JB |
720 | } |
721 | ||
8227622f | 722 | static int vmw_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) |
fb1d9738 JB |
723 | { |
724 | return 0; | |
725 | } | |
726 | ||
8227622f | 727 | static int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, |
fb1d9738 JB |
728 | struct ttm_mem_type_manager *man) |
729 | { | |
fb1d9738 JB |
730 | switch (type) { |
731 | case TTM_PL_SYSTEM: | |
732 | /* System memory */ | |
733 | ||
734 | man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; | |
135cba0d | 735 | man->available_caching = TTM_PL_FLAG_CACHED; |
fb1d9738 JB |
736 | man->default_caching = TTM_PL_FLAG_CACHED; |
737 | break; | |
738 | case TTM_PL_VRAM: | |
739 | /* "On-card" video ram */ | |
d961db75 | 740 | man->func = &ttm_bo_manager_func; |
fb1d9738 | 741 | man->gpu_offset = 0; |
96bf8b87 | 742 | man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE; |
135cba0d TH |
743 | man->available_caching = TTM_PL_FLAG_CACHED; |
744 | man->default_caching = TTM_PL_FLAG_CACHED; | |
745 | break; | |
746 | case VMW_PL_GMR: | |
6da768aa | 747 | case VMW_PL_MOB: |
135cba0d TH |
748 | /* |
749 | * "Guest Memory Regions" is an aperture like feature with | |
750 | * one slot per bo. There is an upper limit of the number of | |
751 | * slots as well as the bo size. | |
752 | */ | |
753 | man->func = &vmw_gmrid_manager_func; | |
754 | man->gpu_offset = 0; | |
755 | man->flags = TTM_MEMTYPE_FLAG_CMA | TTM_MEMTYPE_FLAG_MAPPABLE; | |
756 | man->available_caching = TTM_PL_FLAG_CACHED; | |
757 | man->default_caching = TTM_PL_FLAG_CACHED; | |
fb1d9738 JB |
758 | break; |
759 | default: | |
760 | DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); | |
761 | return -EINVAL; | |
762 | } | |
763 | return 0; | |
764 | } | |
765 | ||
8227622f | 766 | static void vmw_evict_flags(struct ttm_buffer_object *bo, |
fb1d9738 JB |
767 | struct ttm_placement *placement) |
768 | { | |
769 | *placement = vmw_sys_placement; | |
770 | } | |
771 | ||
fb1d9738 JB |
772 | static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp) |
773 | { | |
d08a9b9c TH |
774 | struct ttm_object_file *tfile = |
775 | vmw_fpriv((struct drm_file *)filp->private_data)->tfile; | |
776 | ||
777 | return vmw_user_dmabuf_verify_access(bo, tfile); | |
fb1d9738 JB |
778 | } |
779 | ||
96bf8b87 JG |
780 | static int vmw_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) |
781 | { | |
782 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
783 | struct vmw_private *dev_priv = container_of(bdev, struct vmw_private, bdev); | |
784 | ||
785 | mem->bus.addr = NULL; | |
786 | mem->bus.is_iomem = false; | |
787 | mem->bus.offset = 0; | |
788 | mem->bus.size = mem->num_pages << PAGE_SHIFT; | |
789 | mem->bus.base = 0; | |
790 | if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) | |
791 | return -EINVAL; | |
792 | switch (mem->mem_type) { | |
793 | case TTM_PL_SYSTEM: | |
135cba0d | 794 | case VMW_PL_GMR: |
6da768aa | 795 | case VMW_PL_MOB: |
96bf8b87 JG |
796 | return 0; |
797 | case TTM_PL_VRAM: | |
d961db75 | 798 | mem->bus.offset = mem->start << PAGE_SHIFT; |
96bf8b87 JG |
799 | mem->bus.base = dev_priv->vram_start; |
800 | mem->bus.is_iomem = true; | |
801 | break; | |
802 | default: | |
803 | return -EINVAL; | |
804 | } | |
805 | return 0; | |
806 | } | |
807 | ||
808 | static void vmw_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
809 | { | |
810 | } | |
811 | ||
812 | static int vmw_ttm_fault_reserve_notify(struct ttm_buffer_object *bo) | |
813 | { | |
814 | return 0; | |
815 | } | |
816 | ||
6da768aa TH |
817 | /** |
818 | * vmw_move_notify - TTM move_notify_callback | |
819 | * | |
fd11a3c0 SY |
820 | * @bo: The TTM buffer object about to move. |
821 | * @mem: The struct ttm_mem_reg indicating to what memory | |
822 | * region the move is taking place. | |
6da768aa TH |
823 | * |
824 | * Calls move_notify for all subsystems needing it. | |
825 | * (currently only resources). | |
826 | */ | |
827 | static void vmw_move_notify(struct ttm_buffer_object *bo, | |
828 | struct ttm_mem_reg *mem) | |
829 | { | |
830 | vmw_resource_move_notify(bo, mem); | |
fd11a3c0 | 831 | vmw_query_move_notify(bo, mem); |
6da768aa TH |
832 | } |
833 | ||
834 | ||
835 | /** | |
836 | * vmw_swap_notify - TTM move_notify_callback | |
837 | * | |
fd11a3c0 | 838 | * @bo: The TTM buffer object about to be swapped out. |
6da768aa TH |
839 | */ |
840 | static void vmw_swap_notify(struct ttm_buffer_object *bo) | |
841 | { | |
6da768aa | 842 | ttm_bo_wait(bo, false, false, false); |
6da768aa TH |
843 | } |
844 | ||
845 | ||
fb1d9738 | 846 | struct ttm_bo_driver vmw_bo_driver = { |
649bf3ca | 847 | .ttm_tt_create = &vmw_ttm_tt_create, |
d92d9851 TH |
848 | .ttm_tt_populate = &vmw_ttm_populate, |
849 | .ttm_tt_unpopulate = &vmw_ttm_unpopulate, | |
fb1d9738 JB |
850 | .invalidate_caches = vmw_invalidate_caches, |
851 | .init_mem_type = vmw_init_mem_type, | |
852 | .evict_flags = vmw_evict_flags, | |
853 | .move = NULL, | |
854 | .verify_access = vmw_verify_access, | |
6da768aa TH |
855 | .move_notify = vmw_move_notify, |
856 | .swap_notify = vmw_swap_notify, | |
96bf8b87 JG |
857 | .fault_reserve_notify = &vmw_ttm_fault_reserve_notify, |
858 | .io_mem_reserve = &vmw_ttm_io_mem_reserve, | |
859 | .io_mem_free = &vmw_ttm_io_mem_free, | |
fb1d9738 | 860 | }; |