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dff96888 | 1 | // SPDX-License-Identifier: GPL-2.0 OR MIT |
fb1d9738 JB |
2 | /************************************************************************** |
3 | * | |
dff96888 | 4 | * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA |
fb1d9738 JB |
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 | |
9036f8c7 | 33 | static const struct ttm_place vram_placement_flags = { |
f1217ed0 CK |
34 | .fpfn = 0, |
35 | .lpfn = 0, | |
36 | .flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | |
37 | }; | |
fb1d9738 | 38 | |
9036f8c7 | 39 | static const struct ttm_place vram_ne_placement_flags = { |
f1217ed0 CK |
40 | .fpfn = 0, |
41 | .lpfn = 0, | |
42 | .flags = TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT | |
43 | }; | |
fb1d9738 | 44 | |
9036f8c7 | 45 | static const struct ttm_place sys_placement_flags = { |
f1217ed0 CK |
46 | .fpfn = 0, |
47 | .lpfn = 0, | |
48 | .flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED | |
49 | }; | |
3530bdc3 | 50 | |
9036f8c7 | 51 | static const struct ttm_place sys_ne_placement_flags = { |
f1217ed0 CK |
52 | .fpfn = 0, |
53 | .lpfn = 0, | |
54 | .flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT | |
55 | }; | |
135cba0d | 56 | |
9036f8c7 | 57 | static const struct ttm_place gmr_placement_flags = { |
f1217ed0 CK |
58 | .fpfn = 0, |
59 | .lpfn = 0, | |
60 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | |
61 | }; | |
d991ef03 | 62 | |
9036f8c7 | 63 | static const struct ttm_place gmr_ne_placement_flags = { |
f1217ed0 CK |
64 | .fpfn = 0, |
65 | .lpfn = 0, | |
66 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT | |
67 | }; | |
6da768aa | 68 | |
9036f8c7 | 69 | static const 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 | ||
9036f8c7 | 75 | static const struct ttm_place mob_ne_placement_flags = { |
3eab3d9e TH |
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 | ||
9036f8c7 | 88 | static const struct ttm_place vram_gmr_placement_flags[] = { |
f1217ed0 CK |
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 | ||
9036f8c7 | 100 | static const struct ttm_place gmr_vram_placement_flags[] = { |
f1217ed0 CK |
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 | ||
9036f8c7 | 119 | static const struct ttm_place vram_gmr_ne_placement_flags[] = { |
f1217ed0 CK |
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 | ||
9036f8c7 | 168 | static const struct ttm_place evictable_placement_flags[] = { |
f1217ed0 CK |
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 | ||
ef86cfee TH |
188 | static const struct ttm_place nonfixed_placement_flags[] = { |
189 | { | |
190 | .fpfn = 0, | |
191 | .lpfn = 0, | |
192 | .flags = TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED | |
193 | }, { | |
194 | .fpfn = 0, | |
195 | .lpfn = 0, | |
196 | .flags = VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | |
197 | }, { | |
198 | .fpfn = 0, | |
199 | .lpfn = 0, | |
200 | .flags = VMW_PL_FLAG_MOB | TTM_PL_FLAG_CACHED | |
201 | } | |
202 | }; | |
203 | ||
d991ef03 | 204 | struct ttm_placement vmw_evictable_placement = { |
6da768aa | 205 | .num_placement = 4, |
d991ef03 JB |
206 | .placement = evictable_placement_flags, |
207 | .num_busy_placement = 1, | |
208 | .busy_placement = &sys_placement_flags | |
209 | }; | |
210 | ||
5bb39e81 | 211 | struct ttm_placement vmw_srf_placement = { |
5bb39e81 TH |
212 | .num_placement = 1, |
213 | .num_busy_placement = 2, | |
214 | .placement = &gmr_placement_flags, | |
215 | .busy_placement = gmr_vram_placement_flags | |
216 | }; | |
217 | ||
6da768aa | 218 | struct ttm_placement vmw_mob_placement = { |
6da768aa TH |
219 | .num_placement = 1, |
220 | .num_busy_placement = 1, | |
221 | .placement = &mob_placement_flags, | |
222 | .busy_placement = &mob_placement_flags | |
223 | }; | |
224 | ||
3eab3d9e TH |
225 | struct ttm_placement vmw_mob_ne_placement = { |
226 | .num_placement = 1, | |
227 | .num_busy_placement = 1, | |
228 | .placement = &mob_ne_placement_flags, | |
229 | .busy_placement = &mob_ne_placement_flags | |
230 | }; | |
231 | ||
ef86cfee TH |
232 | struct ttm_placement vmw_nonfixed_placement = { |
233 | .num_placement = 3, | |
234 | .placement = nonfixed_placement_flags, | |
235 | .num_busy_placement = 1, | |
236 | .busy_placement = &sys_placement_flags | |
237 | }; | |
238 | ||
649bf3ca | 239 | struct vmw_ttm_tt { |
d92d9851 | 240 | struct ttm_dma_tt dma_ttm; |
135cba0d TH |
241 | struct vmw_private *dev_priv; |
242 | int gmr_id; | |
6da768aa TH |
243 | struct vmw_mob *mob; |
244 | int mem_type; | |
d92d9851 TH |
245 | struct sg_table sgt; |
246 | struct vmw_sg_table vsgt; | |
247 | uint64_t sg_alloc_size; | |
248 | bool mapped; | |
fb1d9738 JB |
249 | }; |
250 | ||
308d17ef TH |
251 | const size_t vmw_tt_size = sizeof(struct vmw_ttm_tt); |
252 | ||
d92d9851 TH |
253 | /** |
254 | * Helper functions to advance a struct vmw_piter iterator. | |
255 | * | |
256 | * @viter: Pointer to the iterator. | |
257 | * | |
258 | * These functions return false if past the end of the list, | |
259 | * true otherwise. Functions are selected depending on the current | |
260 | * DMA mapping mode. | |
261 | */ | |
262 | static bool __vmw_piter_non_sg_next(struct vmw_piter *viter) | |
263 | { | |
264 | return ++(viter->i) < viter->num_pages; | |
265 | } | |
266 | ||
267 | static bool __vmw_piter_sg_next(struct vmw_piter *viter) | |
268 | { | |
8dc39cfc TH |
269 | bool ret = __vmw_piter_non_sg_next(viter); |
270 | ||
271 | return __sg_page_iter_dma_next(&viter->iter) && ret; | |
d92d9851 TH |
272 | } |
273 | ||
274 | ||
275 | /** | |
276 | * Helper functions to return a pointer to the current page. | |
277 | * | |
278 | * @viter: Pointer to the iterator | |
279 | * | |
280 | * These functions return a pointer to the page currently | |
281 | * pointed to by @viter. Functions are selected depending on the | |
282 | * current mapping mode. | |
283 | */ | |
284 | static struct page *__vmw_piter_non_sg_page(struct vmw_piter *viter) | |
285 | { | |
286 | return viter->pages[viter->i]; | |
287 | } | |
288 | ||
d92d9851 TH |
289 | /** |
290 | * Helper functions to return the DMA address of the current page. | |
291 | * | |
292 | * @viter: Pointer to the iterator | |
293 | * | |
294 | * These functions return the DMA address of the page currently | |
295 | * pointed to by @viter. Functions are selected depending on the | |
296 | * current mapping mode. | |
297 | */ | |
298 | static dma_addr_t __vmw_piter_phys_addr(struct vmw_piter *viter) | |
299 | { | |
300 | return page_to_phys(viter->pages[viter->i]); | |
301 | } | |
302 | ||
303 | static dma_addr_t __vmw_piter_dma_addr(struct vmw_piter *viter) | |
304 | { | |
305 | return viter->addrs[viter->i]; | |
306 | } | |
307 | ||
308 | static dma_addr_t __vmw_piter_sg_addr(struct vmw_piter *viter) | |
309 | { | |
8dc39cfc | 310 | return sg_page_iter_dma_address(&viter->iter); |
d92d9851 TH |
311 | } |
312 | ||
313 | ||
314 | /** | |
315 | * vmw_piter_start - Initialize a struct vmw_piter. | |
316 | * | |
317 | * @viter: Pointer to the iterator to initialize | |
318 | * @vsgt: Pointer to a struct vmw_sg_table to initialize from | |
319 | * | |
320 | * Note that we're following the convention of __sg_page_iter_start, so that | |
321 | * the iterator doesn't point to a valid page after initialization; it has | |
322 | * to be advanced one step first. | |
323 | */ | |
324 | void vmw_piter_start(struct vmw_piter *viter, const struct vmw_sg_table *vsgt, | |
325 | unsigned long p_offset) | |
326 | { | |
327 | viter->i = p_offset - 1; | |
328 | viter->num_pages = vsgt->num_pages; | |
8dc39cfc TH |
329 | viter->page = &__vmw_piter_non_sg_page; |
330 | viter->pages = vsgt->pages; | |
d92d9851 TH |
331 | switch (vsgt->mode) { |
332 | case vmw_dma_phys: | |
333 | viter->next = &__vmw_piter_non_sg_next; | |
334 | viter->dma_address = &__vmw_piter_phys_addr; | |
d92d9851 TH |
335 | break; |
336 | case vmw_dma_alloc_coherent: | |
337 | viter->next = &__vmw_piter_non_sg_next; | |
338 | viter->dma_address = &__vmw_piter_dma_addr; | |
d92d9851 TH |
339 | viter->addrs = vsgt->addrs; |
340 | break; | |
341 | case vmw_dma_map_populate: | |
342 | case vmw_dma_map_bind: | |
343 | viter->next = &__vmw_piter_sg_next; | |
344 | viter->dma_address = &__vmw_piter_sg_addr; | |
8dc39cfc | 345 | __sg_page_iter_start(&viter->iter.base, vsgt->sgt->sgl, |
d92d9851 TH |
346 | vsgt->sgt->orig_nents, p_offset); |
347 | break; | |
348 | default: | |
349 | BUG(); | |
350 | } | |
351 | } | |
352 | ||
353 | /** | |
354 | * vmw_ttm_unmap_from_dma - unmap device addresses previsouly mapped for | |
355 | * TTM pages | |
356 | * | |
357 | * @vmw_tt: Pointer to a struct vmw_ttm_backend | |
358 | * | |
359 | * Used to free dma mappings previously mapped by vmw_ttm_map_for_dma. | |
360 | */ | |
361 | static void vmw_ttm_unmap_from_dma(struct vmw_ttm_tt *vmw_tt) | |
362 | { | |
363 | struct device *dev = vmw_tt->dev_priv->dev->dev; | |
364 | ||
365 | dma_unmap_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.nents, | |
366 | DMA_BIDIRECTIONAL); | |
367 | vmw_tt->sgt.nents = vmw_tt->sgt.orig_nents; | |
368 | } | |
369 | ||
370 | /** | |
371 | * vmw_ttm_map_for_dma - map TTM pages to get device addresses | |
372 | * | |
373 | * @vmw_tt: Pointer to a struct vmw_ttm_backend | |
374 | * | |
375 | * This function is used to get device addresses from the kernel DMA layer. | |
376 | * However, it's violating the DMA API in that when this operation has been | |
377 | * performed, it's illegal for the CPU to write to the pages without first | |
378 | * unmapping the DMA mappings, or calling dma_sync_sg_for_cpu(). It is | |
379 | * therefore only legal to call this function if we know that the function | |
380 | * dma_sync_sg_for_cpu() is a NOP, and dma_sync_sg_for_device() is at most | |
381 | * a CPU write buffer flush. | |
382 | */ | |
383 | static int vmw_ttm_map_for_dma(struct vmw_ttm_tt *vmw_tt) | |
384 | { | |
385 | struct device *dev = vmw_tt->dev_priv->dev->dev; | |
386 | int ret; | |
387 | ||
388 | ret = dma_map_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.orig_nents, | |
389 | DMA_BIDIRECTIONAL); | |
390 | if (unlikely(ret == 0)) | |
391 | return -ENOMEM; | |
392 | ||
393 | vmw_tt->sgt.nents = ret; | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
398 | /** | |
399 | * vmw_ttm_map_dma - Make sure TTM pages are visible to the device | |
400 | * | |
401 | * @vmw_tt: Pointer to a struct vmw_ttm_tt | |
402 | * | |
403 | * Select the correct function for and make sure the TTM pages are | |
404 | * visible to the device. Allocate storage for the device mappings. | |
405 | * If a mapping has already been performed, indicated by the storage | |
406 | * pointer being non NULL, the function returns success. | |
407 | */ | |
408 | static int vmw_ttm_map_dma(struct vmw_ttm_tt *vmw_tt) | |
409 | { | |
410 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
411 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
412 | struct vmw_sg_table *vsgt = &vmw_tt->vsgt; | |
279c01f6 RH |
413 | struct ttm_operation_ctx ctx = { |
414 | .interruptible = true, | |
415 | .no_wait_gpu = false | |
416 | }; | |
d92d9851 TH |
417 | struct vmw_piter iter; |
418 | dma_addr_t old; | |
419 | int ret = 0; | |
420 | static size_t sgl_size; | |
421 | static size_t sgt_size; | |
422 | ||
423 | if (vmw_tt->mapped) | |
424 | return 0; | |
425 | ||
426 | vsgt->mode = dev_priv->map_mode; | |
427 | vsgt->pages = vmw_tt->dma_ttm.ttm.pages; | |
428 | vsgt->num_pages = vmw_tt->dma_ttm.ttm.num_pages; | |
429 | vsgt->addrs = vmw_tt->dma_ttm.dma_address; | |
430 | vsgt->sgt = &vmw_tt->sgt; | |
431 | ||
432 | switch (dev_priv->map_mode) { | |
433 | case vmw_dma_map_bind: | |
434 | case vmw_dma_map_populate: | |
435 | if (unlikely(!sgl_size)) { | |
436 | sgl_size = ttm_round_pot(sizeof(struct scatterlist)); | |
437 | sgt_size = ttm_round_pot(sizeof(struct sg_table)); | |
438 | } | |
439 | vmw_tt->sg_alloc_size = sgt_size + sgl_size * vsgt->num_pages; | |
279c01f6 | 440 | ret = ttm_mem_global_alloc(glob, vmw_tt->sg_alloc_size, &ctx); |
d92d9851 TH |
441 | if (unlikely(ret != 0)) |
442 | return ret; | |
443 | ||
bde15555 TH |
444 | ret = __sg_alloc_table_from_pages |
445 | (&vmw_tt->sgt, vsgt->pages, vsgt->num_pages, 0, | |
446 | (unsigned long) vsgt->num_pages << PAGE_SHIFT, | |
447 | dma_get_max_seg_size(dev_priv->dev->dev), | |
448 | GFP_KERNEL); | |
d92d9851 TH |
449 | if (unlikely(ret != 0)) |
450 | goto out_sg_alloc_fail; | |
451 | ||
452 | if (vsgt->num_pages > vmw_tt->sgt.nents) { | |
453 | uint64_t over_alloc = | |
454 | sgl_size * (vsgt->num_pages - | |
455 | vmw_tt->sgt.nents); | |
456 | ||
457 | ttm_mem_global_free(glob, over_alloc); | |
458 | vmw_tt->sg_alloc_size -= over_alloc; | |
459 | } | |
460 | ||
461 | ret = vmw_ttm_map_for_dma(vmw_tt); | |
462 | if (unlikely(ret != 0)) | |
463 | goto out_map_fail; | |
464 | ||
465 | break; | |
466 | default: | |
467 | break; | |
468 | } | |
469 | ||
470 | old = ~((dma_addr_t) 0); | |
471 | vmw_tt->vsgt.num_regions = 0; | |
472 | for (vmw_piter_start(&iter, vsgt, 0); vmw_piter_next(&iter);) { | |
473 | dma_addr_t cur = vmw_piter_dma_addr(&iter); | |
474 | ||
475 | if (cur != old + PAGE_SIZE) | |
476 | vmw_tt->vsgt.num_regions++; | |
477 | old = cur; | |
478 | } | |
479 | ||
480 | vmw_tt->mapped = true; | |
481 | return 0; | |
482 | ||
483 | out_map_fail: | |
484 | sg_free_table(vmw_tt->vsgt.sgt); | |
485 | vmw_tt->vsgt.sgt = NULL; | |
486 | out_sg_alloc_fail: | |
487 | ttm_mem_global_free(glob, vmw_tt->sg_alloc_size); | |
488 | return ret; | |
489 | } | |
490 | ||
491 | /** | |
492 | * vmw_ttm_unmap_dma - Tear down any TTM page device mappings | |
493 | * | |
494 | * @vmw_tt: Pointer to a struct vmw_ttm_tt | |
495 | * | |
496 | * Tear down any previously set up device DMA mappings and free | |
497 | * any storage space allocated for them. If there are no mappings set up, | |
498 | * this function is a NOP. | |
499 | */ | |
500 | static void vmw_ttm_unmap_dma(struct vmw_ttm_tt *vmw_tt) | |
501 | { | |
502 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
503 | ||
504 | if (!vmw_tt->vsgt.sgt) | |
505 | return; | |
506 | ||
507 | switch (dev_priv->map_mode) { | |
508 | case vmw_dma_map_bind: | |
509 | case vmw_dma_map_populate: | |
510 | vmw_ttm_unmap_from_dma(vmw_tt); | |
511 | sg_free_table(vmw_tt->vsgt.sgt); | |
512 | vmw_tt->vsgt.sgt = NULL; | |
513 | ttm_mem_global_free(vmw_mem_glob(dev_priv), | |
514 | vmw_tt->sg_alloc_size); | |
515 | break; | |
516 | default: | |
517 | break; | |
518 | } | |
519 | vmw_tt->mapped = false; | |
520 | } | |
521 | ||
0fd53cfb TH |
522 | /** |
523 | * vmw_bo_sg_table - Return a struct vmw_sg_table object for a | |
524 | * TTM buffer object | |
525 | * | |
526 | * @bo: Pointer to a struct ttm_buffer_object | |
527 | * | |
528 | * Returns a pointer to a struct vmw_sg_table object. The object should | |
529 | * not be freed after use. | |
530 | * Note that for the device addresses to be valid, the buffer object must | |
531 | * either be reserved or pinned. | |
532 | */ | |
533 | const struct vmw_sg_table *vmw_bo_sg_table(struct ttm_buffer_object *bo) | |
534 | { | |
535 | struct vmw_ttm_tt *vmw_tt = | |
536 | container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
537 | ||
538 | return &vmw_tt->vsgt; | |
539 | } | |
540 | ||
541 | ||
0a667b50 DA |
542 | static int vmw_ttm_bind(struct ttm_bo_device *bdev, |
543 | struct ttm_tt *ttm, struct ttm_resource *bo_mem) | |
fb1d9738 | 544 | { |
d92d9851 TH |
545 | struct vmw_ttm_tt *vmw_be = |
546 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
547 | int ret; | |
548 | ||
549 | ret = vmw_ttm_map_dma(vmw_be); | |
550 | if (unlikely(ret != 0)) | |
551 | return ret; | |
135cba0d TH |
552 | |
553 | vmw_be->gmr_id = bo_mem->start; | |
6da768aa | 554 | vmw_be->mem_type = bo_mem->mem_type; |
135cba0d | 555 | |
6da768aa TH |
556 | switch (bo_mem->mem_type) { |
557 | case VMW_PL_GMR: | |
558 | return vmw_gmr_bind(vmw_be->dev_priv, &vmw_be->vsgt, | |
559 | ttm->num_pages, vmw_be->gmr_id); | |
560 | case VMW_PL_MOB: | |
561 | if (unlikely(vmw_be->mob == NULL)) { | |
562 | vmw_be->mob = | |
563 | vmw_mob_create(ttm->num_pages); | |
564 | if (unlikely(vmw_be->mob == NULL)) | |
565 | return -ENOMEM; | |
566 | } | |
567 | ||
568 | return vmw_mob_bind(vmw_be->dev_priv, vmw_be->mob, | |
0fd53cfb | 569 | &vmw_be->vsgt, ttm->num_pages, |
6da768aa TH |
570 | vmw_be->gmr_id); |
571 | default: | |
572 | BUG(); | |
573 | } | |
574 | return 0; | |
fb1d9738 JB |
575 | } |
576 | ||
0a667b50 DA |
577 | static void vmw_ttm_unbind(struct ttm_bo_device *bdev, |
578 | struct ttm_tt *ttm) | |
fb1d9738 | 579 | { |
d92d9851 TH |
580 | struct vmw_ttm_tt *vmw_be = |
581 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
135cba0d | 582 | |
6da768aa TH |
583 | switch (vmw_be->mem_type) { |
584 | case VMW_PL_GMR: | |
585 | vmw_gmr_unbind(vmw_be->dev_priv, vmw_be->gmr_id); | |
586 | break; | |
587 | case VMW_PL_MOB: | |
588 | vmw_mob_unbind(vmw_be->dev_priv, vmw_be->mob); | |
589 | break; | |
590 | default: | |
591 | BUG(); | |
592 | } | |
d92d9851 TH |
593 | |
594 | if (vmw_be->dev_priv->map_mode == vmw_dma_map_bind) | |
595 | vmw_ttm_unmap_dma(vmw_be); | |
fb1d9738 JB |
596 | } |
597 | ||
6da768aa | 598 | |
0a667b50 | 599 | static void vmw_ttm_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm) |
fb1d9738 | 600 | { |
d92d9851 TH |
601 | struct vmw_ttm_tt *vmw_be = |
602 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
603 | ||
604 | vmw_ttm_unmap_dma(vmw_be); | |
605 | if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent) | |
606 | ttm_dma_tt_fini(&vmw_be->dma_ttm); | |
607 | else | |
608 | ttm_tt_fini(ttm); | |
6da768aa TH |
609 | |
610 | if (vmw_be->mob) | |
611 | vmw_mob_destroy(vmw_be->mob); | |
612 | ||
fb1d9738 JB |
613 | kfree(vmw_be); |
614 | } | |
615 | ||
0fd53cfb | 616 | |
0a667b50 DA |
617 | static int vmw_ttm_populate(struct ttm_bo_device *bdev, |
618 | struct ttm_tt *ttm, struct ttm_operation_ctx *ctx) | |
d92d9851 TH |
619 | { |
620 | struct vmw_ttm_tt *vmw_tt = | |
621 | container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
622 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
623 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
624 | int ret; | |
625 | ||
626 | if (ttm->state != tt_unpopulated) | |
627 | return 0; | |
628 | ||
629 | if (dev_priv->map_mode == vmw_dma_alloc_coherent) { | |
630 | size_t size = | |
631 | ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t)); | |
d0cef9fa | 632 | ret = ttm_mem_global_alloc(glob, size, ctx); |
d92d9851 TH |
633 | if (unlikely(ret != 0)) |
634 | return ret; | |
635 | ||
d0cef9fa RH |
636 | ret = ttm_dma_populate(&vmw_tt->dma_ttm, dev_priv->dev->dev, |
637 | ctx); | |
d92d9851 TH |
638 | if (unlikely(ret != 0)) |
639 | ttm_mem_global_free(glob, size); | |
640 | } else | |
d0cef9fa | 641 | ret = ttm_pool_populate(ttm, ctx); |
d92d9851 TH |
642 | |
643 | return ret; | |
644 | } | |
645 | ||
0a667b50 DA |
646 | static void vmw_ttm_unpopulate(struct ttm_bo_device *bdev, |
647 | struct ttm_tt *ttm) | |
d92d9851 TH |
648 | { |
649 | struct vmw_ttm_tt *vmw_tt = container_of(ttm, struct vmw_ttm_tt, | |
650 | dma_ttm.ttm); | |
651 | struct vmw_private *dev_priv = vmw_tt->dev_priv; | |
652 | struct ttm_mem_global *glob = vmw_mem_glob(dev_priv); | |
653 | ||
6da768aa TH |
654 | |
655 | if (vmw_tt->mob) { | |
656 | vmw_mob_destroy(vmw_tt->mob); | |
657 | vmw_tt->mob = NULL; | |
658 | } | |
659 | ||
d92d9851 TH |
660 | vmw_ttm_unmap_dma(vmw_tt); |
661 | if (dev_priv->map_mode == vmw_dma_alloc_coherent) { | |
662 | size_t size = | |
663 | ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t)); | |
664 | ||
665 | ttm_dma_unpopulate(&vmw_tt->dma_ttm, dev_priv->dev->dev); | |
666 | ttm_mem_global_free(glob, size); | |
667 | } else | |
668 | ttm_pool_unpopulate(ttm); | |
669 | } | |
670 | ||
dde5da23 CK |
671 | static struct ttm_tt *vmw_ttm_tt_create(struct ttm_buffer_object *bo, |
672 | uint32_t page_flags) | |
fb1d9738 | 673 | { |
649bf3ca | 674 | struct vmw_ttm_tt *vmw_be; |
d92d9851 | 675 | int ret; |
fb1d9738 | 676 | |
d92d9851 | 677 | vmw_be = kzalloc(sizeof(*vmw_be), GFP_KERNEL); |
fb1d9738 JB |
678 | if (!vmw_be) |
679 | return NULL; | |
680 | ||
dde5da23 | 681 | vmw_be->dev_priv = container_of(bo->bdev, struct vmw_private, bdev); |
6da768aa | 682 | vmw_be->mob = NULL; |
fb1d9738 | 683 | |
d92d9851 | 684 | if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent) |
dde5da23 | 685 | ret = ttm_dma_tt_init(&vmw_be->dma_ttm, bo, page_flags); |
d92d9851 | 686 | else |
dde5da23 | 687 | ret = ttm_tt_init(&vmw_be->dma_ttm.ttm, bo, page_flags); |
d92d9851 TH |
688 | if (unlikely(ret != 0)) |
689 | goto out_no_init; | |
690 | ||
691 | return &vmw_be->dma_ttm.ttm; | |
692 | out_no_init: | |
693 | kfree(vmw_be); | |
694 | return NULL; | |
fb1d9738 JB |
695 | } |
696 | ||
8227622f | 697 | static void vmw_evict_flags(struct ttm_buffer_object *bo, |
fb1d9738 JB |
698 | struct ttm_placement *placement) |
699 | { | |
700 | *placement = vmw_sys_placement; | |
701 | } | |
702 | ||
fb1d9738 JB |
703 | static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp) |
704 | { | |
d08a9b9c TH |
705 | struct ttm_object_file *tfile = |
706 | vmw_fpriv((struct drm_file *)filp->private_data)->tfile; | |
707 | ||
f1d34bfd | 708 | return vmw_user_bo_verify_access(bo, tfile); |
fb1d9738 JB |
709 | } |
710 | ||
2966141a | 711 | static int vmw_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_resource *mem) |
96bf8b87 | 712 | { |
96bf8b87 JG |
713 | struct vmw_private *dev_priv = container_of(bdev, struct vmw_private, bdev); |
714 | ||
96bf8b87 JG |
715 | switch (mem->mem_type) { |
716 | case TTM_PL_SYSTEM: | |
135cba0d | 717 | case VMW_PL_GMR: |
6da768aa | 718 | case VMW_PL_MOB: |
96bf8b87 JG |
719 | return 0; |
720 | case TTM_PL_VRAM: | |
54d04ea8 CK |
721 | mem->bus.offset = (mem->start << PAGE_SHIFT) + |
722 | dev_priv->vram_start; | |
96bf8b87 JG |
723 | mem->bus.is_iomem = true; |
724 | break; | |
725 | default: | |
726 | return -EINVAL; | |
727 | } | |
728 | return 0; | |
729 | } | |
730 | ||
6da768aa TH |
731 | /** |
732 | * vmw_move_notify - TTM move_notify_callback | |
733 | * | |
fd11a3c0 | 734 | * @bo: The TTM buffer object about to move. |
2966141a | 735 | * @mem: The struct ttm_resource indicating to what memory |
fd11a3c0 | 736 | * region the move is taking place. |
6da768aa TH |
737 | * |
738 | * Calls move_notify for all subsystems needing it. | |
739 | * (currently only resources). | |
740 | */ | |
741 | static void vmw_move_notify(struct ttm_buffer_object *bo, | |
66257db7 | 742 | bool evict, |
2966141a | 743 | struct ttm_resource *mem) |
6da768aa | 744 | { |
e9431ea5 | 745 | vmw_bo_move_notify(bo, mem); |
fd11a3c0 | 746 | vmw_query_move_notify(bo, mem); |
6da768aa TH |
747 | } |
748 | ||
749 | ||
750 | /** | |
751 | * vmw_swap_notify - TTM move_notify_callback | |
752 | * | |
fd11a3c0 | 753 | * @bo: The TTM buffer object about to be swapped out. |
6da768aa TH |
754 | */ |
755 | static void vmw_swap_notify(struct ttm_buffer_object *bo) | |
756 | { | |
e9431ea5 | 757 | vmw_bo_swap_notify(bo); |
f08c86c3 | 758 | (void) ttm_bo_wait(bo, false, false); |
6da768aa TH |
759 | } |
760 | ||
761 | ||
fb1d9738 | 762 | struct ttm_bo_driver vmw_bo_driver = { |
649bf3ca | 763 | .ttm_tt_create = &vmw_ttm_tt_create, |
d92d9851 TH |
764 | .ttm_tt_populate = &vmw_ttm_populate, |
765 | .ttm_tt_unpopulate = &vmw_ttm_unpopulate, | |
debf8ab9 DA |
766 | .ttm_tt_bind = &vmw_ttm_bind, |
767 | .ttm_tt_unbind = &vmw_ttm_unbind, | |
768 | .ttm_tt_destroy = &vmw_ttm_destroy, | |
a2ab19fe | 769 | .eviction_valuable = ttm_bo_eviction_valuable, |
fb1d9738 JB |
770 | .evict_flags = vmw_evict_flags, |
771 | .move = NULL, | |
772 | .verify_access = vmw_verify_access, | |
6da768aa TH |
773 | .move_notify = vmw_move_notify, |
774 | .swap_notify = vmw_swap_notify, | |
96bf8b87 | 775 | .io_mem_reserve = &vmw_ttm_io_mem_reserve, |
fb1d9738 | 776 | }; |
56dc01f1 DA |
777 | |
778 | int vmw_bo_create_and_populate(struct vmw_private *dev_priv, | |
779 | unsigned long bo_size, | |
780 | struct ttm_buffer_object **bo_p) | |
781 | { | |
782 | struct ttm_operation_ctx ctx = { | |
783 | .interruptible = false, | |
784 | .no_wait_gpu = false | |
785 | }; | |
786 | struct ttm_buffer_object *bo; | |
787 | int ret; | |
788 | ||
789 | ret = ttm_bo_create(&dev_priv->bdev, bo_size, | |
790 | ttm_bo_type_device, | |
791 | &vmw_sys_ne_placement, | |
792 | 0, false, &bo); | |
793 | ||
794 | if (unlikely(ret != 0)) | |
795 | return ret; | |
796 | ||
797 | ret = ttm_bo_reserve(bo, false, true, NULL); | |
798 | BUG_ON(ret != 0); | |
0a667b50 | 799 | ret = vmw_ttm_populate(bo->bdev, bo->ttm, &ctx); |
a2d6ddc4 DA |
800 | if (likely(ret == 0)) { |
801 | struct vmw_ttm_tt *vmw_tt = | |
802 | container_of(bo->ttm, struct vmw_ttm_tt, dma_ttm.ttm); | |
803 | ret = vmw_ttm_map_dma(vmw_tt); | |
804 | } | |
56dc01f1 DA |
805 | |
806 | ttm_bo_unreserve(bo); | |
807 | ||
808 | if (likely(ret == 0)) | |
809 | *bo_p = bo; | |
810 | return ret; | |
811 | } |