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f9aa76a8 DA |
1 | /* |
2 | * Copyright 2012 Red Hat Inc. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the | |
6 | * "Software"), to deal in the Software without restriction, including | |
7 | * without limitation the rights to use, copy, modify, merge, publish, | |
8 | * distribute, sub license, and/or sell copies of the Software, and to | |
9 | * permit persons to whom the Software is furnished to do so, subject to | |
10 | * the following conditions: | |
11 | * | |
12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
13 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
15 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
16 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
17 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
18 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
19 | * | |
20 | * The above copyright notice and this permission notice (including the | |
21 | * next paragraph) shall be included in all copies or substantial portions | |
22 | * of the Software. | |
23 | * | |
24 | */ | |
25 | /* | |
26 | * Authors: Dave Airlie <airlied@redhat.com> | |
27 | */ | |
760285e7 | 28 | #include <drm/drmP.h> |
f9aa76a8 DA |
29 | #include "cirrus_drv.h" |
30 | #include <ttm/ttm_page_alloc.h> | |
31 | ||
32 | static inline struct cirrus_device * | |
33 | cirrus_bdev(struct ttm_bo_device *bd) | |
34 | { | |
35 | return container_of(bd, struct cirrus_device, ttm.bdev); | |
36 | } | |
37 | ||
38 | static int | |
39 | cirrus_ttm_mem_global_init(struct drm_global_reference *ref) | |
40 | { | |
41 | return ttm_mem_global_init(ref->object); | |
42 | } | |
43 | ||
44 | static void | |
45 | cirrus_ttm_mem_global_release(struct drm_global_reference *ref) | |
46 | { | |
47 | ttm_mem_global_release(ref->object); | |
48 | } | |
49 | ||
50 | static int cirrus_ttm_global_init(struct cirrus_device *cirrus) | |
51 | { | |
52 | struct drm_global_reference *global_ref; | |
53 | int r; | |
54 | ||
55 | global_ref = &cirrus->ttm.mem_global_ref; | |
56 | global_ref->global_type = DRM_GLOBAL_TTM_MEM; | |
57 | global_ref->size = sizeof(struct ttm_mem_global); | |
58 | global_ref->init = &cirrus_ttm_mem_global_init; | |
59 | global_ref->release = &cirrus_ttm_mem_global_release; | |
60 | r = drm_global_item_ref(global_ref); | |
61 | if (r != 0) { | |
62 | DRM_ERROR("Failed setting up TTM memory accounting " | |
63 | "subsystem.\n"); | |
64 | return r; | |
65 | } | |
66 | ||
67 | cirrus->ttm.bo_global_ref.mem_glob = | |
68 | cirrus->ttm.mem_global_ref.object; | |
69 | global_ref = &cirrus->ttm.bo_global_ref.ref; | |
70 | global_ref->global_type = DRM_GLOBAL_TTM_BO; | |
71 | global_ref->size = sizeof(struct ttm_bo_global); | |
72 | global_ref->init = &ttm_bo_global_init; | |
73 | global_ref->release = &ttm_bo_global_release; | |
74 | r = drm_global_item_ref(global_ref); | |
75 | if (r != 0) { | |
76 | DRM_ERROR("Failed setting up TTM BO subsystem.\n"); | |
77 | drm_global_item_unref(&cirrus->ttm.mem_global_ref); | |
78 | return r; | |
79 | } | |
80 | return 0; | |
81 | } | |
82 | ||
83 | void | |
84 | cirrus_ttm_global_release(struct cirrus_device *cirrus) | |
85 | { | |
86 | if (cirrus->ttm.mem_global_ref.release == NULL) | |
87 | return; | |
88 | ||
89 | drm_global_item_unref(&cirrus->ttm.bo_global_ref.ref); | |
90 | drm_global_item_unref(&cirrus->ttm.mem_global_ref); | |
91 | cirrus->ttm.mem_global_ref.release = NULL; | |
92 | } | |
93 | ||
94 | ||
95 | static void cirrus_bo_ttm_destroy(struct ttm_buffer_object *tbo) | |
96 | { | |
97 | struct cirrus_bo *bo; | |
98 | ||
99 | bo = container_of(tbo, struct cirrus_bo, bo); | |
100 | ||
101 | drm_gem_object_release(&bo->gem); | |
102 | kfree(bo); | |
103 | } | |
104 | ||
105 | bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo) | |
106 | { | |
107 | if (bo->destroy == &cirrus_bo_ttm_destroy) | |
108 | return true; | |
109 | return false; | |
110 | } | |
111 | ||
112 | static int | |
113 | cirrus_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, | |
114 | struct ttm_mem_type_manager *man) | |
115 | { | |
116 | switch (type) { | |
117 | case TTM_PL_SYSTEM: | |
118 | man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; | |
119 | man->available_caching = TTM_PL_MASK_CACHING; | |
120 | man->default_caching = TTM_PL_FLAG_CACHED; | |
121 | break; | |
122 | case TTM_PL_VRAM: | |
123 | man->func = &ttm_bo_manager_func; | |
124 | man->flags = TTM_MEMTYPE_FLAG_FIXED | | |
125 | TTM_MEMTYPE_FLAG_MAPPABLE; | |
126 | man->available_caching = TTM_PL_FLAG_UNCACHED | | |
127 | TTM_PL_FLAG_WC; | |
128 | man->default_caching = TTM_PL_FLAG_WC; | |
129 | break; | |
130 | default: | |
131 | DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); | |
132 | return -EINVAL; | |
133 | } | |
134 | return 0; | |
135 | } | |
136 | ||
137 | static void | |
138 | cirrus_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) | |
139 | { | |
140 | struct cirrus_bo *cirrusbo = cirrus_bo(bo); | |
141 | ||
142 | if (!cirrus_ttm_bo_is_cirrus_bo(bo)) | |
143 | return; | |
144 | ||
145 | cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_SYSTEM); | |
146 | *pl = cirrusbo->placement; | |
147 | } | |
148 | ||
149 | static int cirrus_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp) | |
150 | { | |
151 | return 0; | |
152 | } | |
153 | ||
154 | static int cirrus_ttm_io_mem_reserve(struct ttm_bo_device *bdev, | |
155 | struct ttm_mem_reg *mem) | |
156 | { | |
157 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
158 | struct cirrus_device *cirrus = cirrus_bdev(bdev); | |
159 | ||
160 | mem->bus.addr = NULL; | |
161 | mem->bus.offset = 0; | |
162 | mem->bus.size = mem->num_pages << PAGE_SHIFT; | |
163 | mem->bus.base = 0; | |
164 | mem->bus.is_iomem = false; | |
165 | if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) | |
166 | return -EINVAL; | |
167 | switch (mem->mem_type) { | |
168 | case TTM_PL_SYSTEM: | |
169 | /* system memory */ | |
170 | return 0; | |
171 | case TTM_PL_VRAM: | |
172 | mem->bus.offset = mem->start << PAGE_SHIFT; | |
173 | mem->bus.base = pci_resource_start(cirrus->dev->pdev, 0); | |
174 | mem->bus.is_iomem = true; | |
175 | break; | |
176 | default: | |
177 | return -EINVAL; | |
178 | break; | |
179 | } | |
180 | return 0; | |
181 | } | |
182 | ||
183 | static void cirrus_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
184 | { | |
185 | } | |
186 | ||
187 | static int cirrus_bo_move(struct ttm_buffer_object *bo, | |
188 | bool evict, bool interruptible, | |
189 | bool no_wait_reserve, bool no_wait_gpu, | |
190 | struct ttm_mem_reg *new_mem) | |
191 | { | |
192 | int r; | |
193 | r = ttm_bo_move_memcpy(bo, evict, no_wait_reserve, no_wait_gpu, new_mem); | |
194 | return r; | |
195 | } | |
196 | ||
197 | ||
198 | static void cirrus_ttm_backend_destroy(struct ttm_tt *tt) | |
199 | { | |
200 | ttm_tt_fini(tt); | |
201 | kfree(tt); | |
202 | } | |
203 | ||
204 | static struct ttm_backend_func cirrus_tt_backend_func = { | |
205 | .destroy = &cirrus_ttm_backend_destroy, | |
206 | }; | |
207 | ||
208 | ||
209 | struct ttm_tt *cirrus_ttm_tt_create(struct ttm_bo_device *bdev, | |
210 | unsigned long size, uint32_t page_flags, | |
211 | struct page *dummy_read_page) | |
212 | { | |
213 | struct ttm_tt *tt; | |
214 | ||
215 | tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); | |
216 | if (tt == NULL) | |
217 | return NULL; | |
218 | tt->func = &cirrus_tt_backend_func; | |
219 | if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { | |
220 | kfree(tt); | |
221 | return NULL; | |
222 | } | |
223 | return tt; | |
224 | } | |
225 | ||
226 | static int cirrus_ttm_tt_populate(struct ttm_tt *ttm) | |
227 | { | |
228 | return ttm_pool_populate(ttm); | |
229 | } | |
230 | ||
231 | static void cirrus_ttm_tt_unpopulate(struct ttm_tt *ttm) | |
232 | { | |
233 | ttm_pool_unpopulate(ttm); | |
234 | } | |
235 | ||
236 | struct ttm_bo_driver cirrus_bo_driver = { | |
237 | .ttm_tt_create = cirrus_ttm_tt_create, | |
238 | .ttm_tt_populate = cirrus_ttm_tt_populate, | |
239 | .ttm_tt_unpopulate = cirrus_ttm_tt_unpopulate, | |
240 | .init_mem_type = cirrus_bo_init_mem_type, | |
241 | .evict_flags = cirrus_bo_evict_flags, | |
242 | .move = cirrus_bo_move, | |
243 | .verify_access = cirrus_bo_verify_access, | |
244 | .io_mem_reserve = &cirrus_ttm_io_mem_reserve, | |
245 | .io_mem_free = &cirrus_ttm_io_mem_free, | |
246 | }; | |
247 | ||
248 | int cirrus_mm_init(struct cirrus_device *cirrus) | |
249 | { | |
250 | int ret; | |
251 | struct drm_device *dev = cirrus->dev; | |
252 | struct ttm_bo_device *bdev = &cirrus->ttm.bdev; | |
253 | ||
254 | ret = cirrus_ttm_global_init(cirrus); | |
255 | if (ret) | |
256 | return ret; | |
257 | ||
258 | ret = ttm_bo_device_init(&cirrus->ttm.bdev, | |
259 | cirrus->ttm.bo_global_ref.ref.object, | |
260 | &cirrus_bo_driver, DRM_FILE_PAGE_OFFSET, | |
261 | true); | |
262 | if (ret) { | |
263 | DRM_ERROR("Error initialising bo driver; %d\n", ret); | |
264 | return ret; | |
265 | } | |
266 | ||
267 | ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, | |
268 | cirrus->mc.vram_size >> PAGE_SHIFT); | |
269 | if (ret) { | |
270 | DRM_ERROR("Failed ttm VRAM init: %d\n", ret); | |
271 | return ret; | |
272 | } | |
273 | ||
274 | cirrus->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 0), | |
275 | pci_resource_len(dev->pdev, 0), | |
276 | DRM_MTRR_WC); | |
277 | ||
93b4cc56 | 278 | cirrus->mm_inited = true; |
f9aa76a8 DA |
279 | return 0; |
280 | } | |
281 | ||
282 | void cirrus_mm_fini(struct cirrus_device *cirrus) | |
283 | { | |
284 | struct drm_device *dev = cirrus->dev; | |
93b4cc56 DA |
285 | |
286 | if (!cirrus->mm_inited) | |
287 | return; | |
288 | ||
f9aa76a8 DA |
289 | ttm_bo_device_release(&cirrus->ttm.bdev); |
290 | ||
291 | cirrus_ttm_global_release(cirrus); | |
292 | ||
293 | if (cirrus->fb_mtrr >= 0) { | |
294 | drm_mtrr_del(cirrus->fb_mtrr, | |
295 | pci_resource_start(dev->pdev, 0), | |
296 | pci_resource_len(dev->pdev, 0), DRM_MTRR_WC); | |
297 | cirrus->fb_mtrr = -1; | |
298 | } | |
299 | } | |
300 | ||
301 | void cirrus_ttm_placement(struct cirrus_bo *bo, int domain) | |
302 | { | |
303 | u32 c = 0; | |
304 | bo->placement.fpfn = 0; | |
305 | bo->placement.lpfn = 0; | |
306 | bo->placement.placement = bo->placements; | |
307 | bo->placement.busy_placement = bo->placements; | |
308 | if (domain & TTM_PL_FLAG_VRAM) | |
309 | bo->placements[c++] = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; | |
310 | if (domain & TTM_PL_FLAG_SYSTEM) | |
311 | bo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; | |
312 | if (!c) | |
313 | bo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; | |
314 | bo->placement.num_placement = c; | |
315 | bo->placement.num_busy_placement = c; | |
316 | } | |
317 | ||
318 | int cirrus_bo_reserve(struct cirrus_bo *bo, bool no_wait) | |
319 | { | |
320 | int ret; | |
321 | ||
322 | ret = ttm_bo_reserve(&bo->bo, true, no_wait, false, 0); | |
323 | if (ret) { | |
324 | if (ret != -ERESTARTSYS) | |
325 | DRM_ERROR("reserve failed %p\n", bo); | |
326 | return ret; | |
327 | } | |
328 | return 0; | |
329 | } | |
330 | ||
331 | void cirrus_bo_unreserve(struct cirrus_bo *bo) | |
332 | { | |
333 | ttm_bo_unreserve(&bo->bo); | |
334 | } | |
335 | ||
336 | int cirrus_bo_create(struct drm_device *dev, int size, int align, | |
337 | uint32_t flags, struct cirrus_bo **pcirrusbo) | |
338 | { | |
339 | struct cirrus_device *cirrus = dev->dev_private; | |
340 | struct cirrus_bo *cirrusbo; | |
341 | size_t acc_size; | |
342 | int ret; | |
343 | ||
344 | cirrusbo = kzalloc(sizeof(struct cirrus_bo), GFP_KERNEL); | |
345 | if (!cirrusbo) | |
346 | return -ENOMEM; | |
347 | ||
348 | ret = drm_gem_object_init(dev, &cirrusbo->gem, size); | |
349 | if (ret) { | |
350 | kfree(cirrusbo); | |
351 | return ret; | |
352 | } | |
353 | ||
354 | cirrusbo->gem.driver_private = NULL; | |
355 | cirrusbo->bo.bdev = &cirrus->ttm.bdev; | |
356 | ||
357 | cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); | |
358 | ||
359 | acc_size = ttm_bo_dma_acc_size(&cirrus->ttm.bdev, size, | |
360 | sizeof(struct cirrus_bo)); | |
361 | ||
362 | ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size, | |
363 | ttm_bo_type_device, &cirrusbo->placement, | |
364 | align >> PAGE_SHIFT, 0, false, NULL, acc_size, | |
5288b7b2 | 365 | NULL, cirrus_bo_ttm_destroy); |
f9aa76a8 DA |
366 | if (ret) |
367 | return ret; | |
368 | ||
369 | *pcirrusbo = cirrusbo; | |
370 | return 0; | |
371 | } | |
372 | ||
373 | static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo) | |
374 | { | |
375 | return bo->bo.offset; | |
376 | } | |
377 | ||
378 | int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr) | |
379 | { | |
380 | int i, ret; | |
381 | ||
382 | if (bo->pin_count) { | |
383 | bo->pin_count++; | |
384 | if (gpu_addr) | |
385 | *gpu_addr = cirrus_bo_gpu_offset(bo); | |
386 | } | |
387 | ||
388 | cirrus_ttm_placement(bo, pl_flag); | |
389 | for (i = 0; i < bo->placement.num_placement; i++) | |
390 | bo->placements[i] |= TTM_PL_FLAG_NO_EVICT; | |
391 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false, false); | |
392 | if (ret) | |
393 | return ret; | |
394 | ||
395 | bo->pin_count = 1; | |
396 | if (gpu_addr) | |
397 | *gpu_addr = cirrus_bo_gpu_offset(bo); | |
398 | return 0; | |
399 | } | |
400 | ||
401 | int cirrus_bo_unpin(struct cirrus_bo *bo) | |
402 | { | |
403 | int i, ret; | |
404 | if (!bo->pin_count) { | |
405 | DRM_ERROR("unpin bad %p\n", bo); | |
406 | return 0; | |
407 | } | |
408 | bo->pin_count--; | |
409 | if (bo->pin_count) | |
410 | return 0; | |
411 | ||
412 | for (i = 0; i < bo->placement.num_placement ; i++) | |
413 | bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT; | |
414 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false, false); | |
415 | if (ret) | |
416 | return ret; | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | int cirrus_bo_push_sysram(struct cirrus_bo *bo) | |
422 | { | |
423 | int i, ret; | |
424 | if (!bo->pin_count) { | |
425 | DRM_ERROR("unpin bad %p\n", bo); | |
426 | return 0; | |
427 | } | |
428 | bo->pin_count--; | |
429 | if (bo->pin_count) | |
430 | return 0; | |
431 | ||
432 | if (bo->kmap.virtual) | |
433 | ttm_bo_kunmap(&bo->kmap); | |
434 | ||
435 | cirrus_ttm_placement(bo, TTM_PL_FLAG_SYSTEM); | |
436 | for (i = 0; i < bo->placement.num_placement ; i++) | |
437 | bo->placements[i] |= TTM_PL_FLAG_NO_EVICT; | |
438 | ||
439 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false, false); | |
440 | if (ret) { | |
441 | DRM_ERROR("pushing to VRAM failed\n"); | |
442 | return ret; | |
443 | } | |
444 | return 0; | |
445 | } | |
446 | ||
447 | int cirrus_mmap(struct file *filp, struct vm_area_struct *vma) | |
448 | { | |
449 | struct drm_file *file_priv; | |
450 | struct cirrus_device *cirrus; | |
451 | ||
452 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) | |
453 | return drm_mmap(filp, vma); | |
454 | ||
455 | file_priv = filp->private_data; | |
456 | cirrus = file_priv->minor->dev->dev_private; | |
457 | return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev); | |
458 | } |