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