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312fec14 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> |
312fec14 DA |
29 | #include "ast_drv.h" |
30 | #include <ttm/ttm_page_alloc.h> | |
31 | ||
32 | static inline struct ast_private * | |
33 | ast_bdev(struct ttm_bo_device *bd) | |
34 | { | |
35 | return container_of(bd, struct ast_private, ttm.bdev); | |
36 | } | |
37 | ||
38 | static int | |
39 | ast_ttm_mem_global_init(struct drm_global_reference *ref) | |
40 | { | |
41 | return ttm_mem_global_init(ref->object); | |
42 | } | |
43 | ||
44 | static void | |
45 | ast_ttm_mem_global_release(struct drm_global_reference *ref) | |
46 | { | |
47 | ttm_mem_global_release(ref->object); | |
48 | } | |
49 | ||
50 | static int ast_ttm_global_init(struct ast_private *ast) | |
51 | { | |
52 | struct drm_global_reference *global_ref; | |
53 | int r; | |
54 | ||
55 | global_ref = &ast->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 = &ast_ttm_mem_global_init; | |
59 | global_ref->release = &ast_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 | ast->ttm.bo_global_ref.mem_glob = | |
68 | ast->ttm.mem_global_ref.object; | |
69 | global_ref = &ast->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(&ast->ttm.mem_global_ref); | |
78 | return r; | |
79 | } | |
80 | return 0; | |
81 | } | |
82 | ||
a1537f33 | 83 | static void |
312fec14 DA |
84 | ast_ttm_global_release(struct ast_private *ast) |
85 | { | |
86 | if (ast->ttm.mem_global_ref.release == NULL) | |
87 | return; | |
88 | ||
89 | drm_global_item_unref(&ast->ttm.bo_global_ref.ref); | |
90 | drm_global_item_unref(&ast->ttm.mem_global_ref); | |
91 | ast->ttm.mem_global_ref.release = NULL; | |
92 | } | |
93 | ||
94 | ||
95 | static void ast_bo_ttm_destroy(struct ttm_buffer_object *tbo) | |
96 | { | |
97 | struct ast_bo *bo; | |
98 | ||
99 | bo = container_of(tbo, struct ast_bo, bo); | |
100 | ||
101 | drm_gem_object_release(&bo->gem); | |
102 | kfree(bo); | |
103 | } | |
104 | ||
a1537f33 | 105 | static bool ast_ttm_bo_is_ast_bo(struct ttm_buffer_object *bo) |
312fec14 DA |
106 | { |
107 | if (bo->destroy == &ast_bo_ttm_destroy) | |
108 | return true; | |
109 | return false; | |
110 | } | |
111 | ||
112 | static int | |
113 | ast_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 | ast_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) | |
139 | { | |
140 | struct ast_bo *astbo = ast_bo(bo); | |
141 | ||
142 | if (!ast_ttm_bo_is_ast_bo(bo)) | |
143 | return; | |
144 | ||
145 | ast_ttm_placement(astbo, TTM_PL_FLAG_SYSTEM); | |
146 | *pl = astbo->placement; | |
147 | } | |
148 | ||
149 | static int ast_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp) | |
150 | { | |
acb46527 DH |
151 | struct ast_bo *astbo = ast_bo(bo); |
152 | ||
d9a1f0b4 DH |
153 | return drm_vma_node_verify_access(&astbo->gem.vma_node, |
154 | filp->private_data); | |
312fec14 DA |
155 | } |
156 | ||
157 | static int ast_ttm_io_mem_reserve(struct ttm_bo_device *bdev, | |
158 | struct ttm_mem_reg *mem) | |
159 | { | |
160 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
161 | struct ast_private *ast = ast_bdev(bdev); | |
162 | ||
163 | mem->bus.addr = NULL; | |
164 | mem->bus.offset = 0; | |
165 | mem->bus.size = mem->num_pages << PAGE_SHIFT; | |
166 | mem->bus.base = 0; | |
167 | mem->bus.is_iomem = false; | |
168 | if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) | |
169 | return -EINVAL; | |
170 | switch (mem->mem_type) { | |
171 | case TTM_PL_SYSTEM: | |
172 | /* system memory */ | |
173 | return 0; | |
174 | case TTM_PL_VRAM: | |
175 | mem->bus.offset = mem->start << PAGE_SHIFT; | |
176 | mem->bus.base = pci_resource_start(ast->dev->pdev, 0); | |
177 | mem->bus.is_iomem = true; | |
178 | break; | |
179 | default: | |
180 | return -EINVAL; | |
181 | break; | |
182 | } | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static void ast_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
187 | { | |
188 | } | |
189 | ||
312fec14 DA |
190 | static void ast_ttm_backend_destroy(struct ttm_tt *tt) |
191 | { | |
192 | ttm_tt_fini(tt); | |
193 | kfree(tt); | |
194 | } | |
195 | ||
196 | static struct ttm_backend_func ast_tt_backend_func = { | |
197 | .destroy = &ast_ttm_backend_destroy, | |
198 | }; | |
199 | ||
200 | ||
a1537f33 | 201 | static struct ttm_tt *ast_ttm_tt_create(struct ttm_bo_device *bdev, |
312fec14 DA |
202 | unsigned long size, uint32_t page_flags, |
203 | struct page *dummy_read_page) | |
204 | { | |
205 | struct ttm_tt *tt; | |
206 | ||
207 | tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); | |
208 | if (tt == NULL) | |
209 | return NULL; | |
210 | tt->func = &ast_tt_backend_func; | |
211 | if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { | |
212 | kfree(tt); | |
213 | return NULL; | |
214 | } | |
215 | return tt; | |
216 | } | |
217 | ||
218 | static int ast_ttm_tt_populate(struct ttm_tt *ttm) | |
219 | { | |
220 | return ttm_pool_populate(ttm); | |
221 | } | |
222 | ||
223 | static void ast_ttm_tt_unpopulate(struct ttm_tt *ttm) | |
224 | { | |
225 | ttm_pool_unpopulate(ttm); | |
226 | } | |
227 | ||
228 | struct ttm_bo_driver ast_bo_driver = { | |
229 | .ttm_tt_create = ast_ttm_tt_create, | |
230 | .ttm_tt_populate = ast_ttm_tt_populate, | |
231 | .ttm_tt_unpopulate = ast_ttm_tt_unpopulate, | |
232 | .init_mem_type = ast_bo_init_mem_type, | |
a2ab19fe | 233 | .eviction_valuable = ttm_bo_eviction_valuable, |
312fec14 | 234 | .evict_flags = ast_bo_evict_flags, |
18885778 | 235 | .move = NULL, |
312fec14 DA |
236 | .verify_access = ast_bo_verify_access, |
237 | .io_mem_reserve = &ast_ttm_io_mem_reserve, | |
238 | .io_mem_free = &ast_ttm_io_mem_free, | |
ea642c32 | 239 | .io_mem_pfn = ttm_bo_default_io_mem_pfn, |
312fec14 DA |
240 | }; |
241 | ||
242 | int ast_mm_init(struct ast_private *ast) | |
243 | { | |
244 | int ret; | |
245 | struct drm_device *dev = ast->dev; | |
246 | struct ttm_bo_device *bdev = &ast->ttm.bdev; | |
247 | ||
248 | ret = ast_ttm_global_init(ast); | |
249 | if (ret) | |
250 | return ret; | |
251 | ||
252 | ret = ttm_bo_device_init(&ast->ttm.bdev, | |
253 | ast->ttm.bo_global_ref.ref.object, | |
44d847b7 DH |
254 | &ast_bo_driver, |
255 | dev->anon_inode->i_mapping, | |
256 | DRM_FILE_PAGE_OFFSET, | |
312fec14 DA |
257 | true); |
258 | if (ret) { | |
259 | DRM_ERROR("Error initialising bo driver; %d\n", ret); | |
260 | return ret; | |
261 | } | |
262 | ||
263 | ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, | |
264 | ast->vram_size >> PAGE_SHIFT); | |
265 | if (ret) { | |
266 | DRM_ERROR("Failed ttm VRAM init: %d\n", ret); | |
267 | return ret; | |
268 | } | |
269 | ||
7cf321d1 DA |
270 | arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0), |
271 | pci_resource_len(dev->pdev, 0)); | |
247d36d7 AL |
272 | ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0), |
273 | pci_resource_len(dev->pdev, 0)); | |
312fec14 DA |
274 | |
275 | return 0; | |
276 | } | |
277 | ||
278 | void ast_mm_fini(struct ast_private *ast) | |
279 | { | |
7cf321d1 DA |
280 | struct drm_device *dev = ast->dev; |
281 | ||
312fec14 DA |
282 | ttm_bo_device_release(&ast->ttm.bdev); |
283 | ||
284 | ast_ttm_global_release(ast); | |
285 | ||
247d36d7 | 286 | arch_phys_wc_del(ast->fb_mtrr); |
7cf321d1 DA |
287 | arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0), |
288 | pci_resource_len(dev->pdev, 0)); | |
312fec14 DA |
289 | } |
290 | ||
291 | void ast_ttm_placement(struct ast_bo *bo, int domain) | |
292 | { | |
293 | u32 c = 0; | |
f1217ed0 CK |
294 | unsigned i; |
295 | ||
312fec14 DA |
296 | bo->placement.placement = bo->placements; |
297 | bo->placement.busy_placement = bo->placements; | |
298 | if (domain & TTM_PL_FLAG_VRAM) | |
f1217ed0 | 299 | bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; |
312fec14 | 300 | if (domain & TTM_PL_FLAG_SYSTEM) |
a9d6dd25 | 301 | bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM; |
312fec14 | 302 | if (!c) |
a9d6dd25 | 303 | bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM; |
312fec14 DA |
304 | bo->placement.num_placement = c; |
305 | bo->placement.num_busy_placement = c; | |
f1217ed0 CK |
306 | for (i = 0; i < c; ++i) { |
307 | bo->placements[i].fpfn = 0; | |
308 | bo->placements[i].lpfn = 0; | |
309 | } | |
312fec14 DA |
310 | } |
311 | ||
312fec14 DA |
312 | int ast_bo_create(struct drm_device *dev, int size, int align, |
313 | uint32_t flags, struct ast_bo **pastbo) | |
314 | { | |
315 | struct ast_private *ast = dev->dev_private; | |
316 | struct ast_bo *astbo; | |
317 | size_t acc_size; | |
318 | int ret; | |
319 | ||
320 | astbo = kzalloc(sizeof(struct ast_bo), GFP_KERNEL); | |
321 | if (!astbo) | |
322 | return -ENOMEM; | |
323 | ||
324 | ret = drm_gem_object_init(dev, &astbo->gem, size); | |
325 | if (ret) { | |
326 | kfree(astbo); | |
327 | return ret; | |
328 | } | |
329 | ||
312fec14 DA |
330 | astbo->bo.bdev = &ast->ttm.bdev; |
331 | ||
332 | ast_ttm_placement(astbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); | |
333 | ||
334 | acc_size = ttm_bo_dma_acc_size(&ast->ttm.bdev, size, | |
335 | sizeof(struct ast_bo)); | |
336 | ||
337 | ret = ttm_bo_init(&ast->ttm.bdev, &astbo->bo, size, | |
338 | ttm_bo_type_device, &astbo->placement, | |
0b91c4a1 | 339 | align >> PAGE_SHIFT, false, NULL, acc_size, |
f4f4e3e3 | 340 | NULL, NULL, ast_bo_ttm_destroy); |
312fec14 DA |
341 | if (ret) |
342 | return ret; | |
343 | ||
344 | *pastbo = astbo; | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static inline u64 ast_bo_gpu_offset(struct ast_bo *bo) | |
349 | { | |
350 | return bo->bo.offset; | |
351 | } | |
352 | ||
353 | int ast_bo_pin(struct ast_bo *bo, u32 pl_flag, u64 *gpu_addr) | |
354 | { | |
355 | int i, ret; | |
356 | ||
357 | if (bo->pin_count) { | |
358 | bo->pin_count++; | |
359 | if (gpu_addr) | |
360 | *gpu_addr = ast_bo_gpu_offset(bo); | |
361 | } | |
362 | ||
363 | ast_ttm_placement(bo, pl_flag); | |
364 | for (i = 0; i < bo->placement.num_placement; i++) | |
f1217ed0 | 365 | bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
97a875cb | 366 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
312fec14 DA |
367 | if (ret) |
368 | return ret; | |
369 | ||
370 | bo->pin_count = 1; | |
371 | if (gpu_addr) | |
372 | *gpu_addr = ast_bo_gpu_offset(bo); | |
373 | return 0; | |
374 | } | |
375 | ||
376 | int ast_bo_unpin(struct ast_bo *bo) | |
377 | { | |
378 | int i, ret; | |
379 | if (!bo->pin_count) { | |
380 | DRM_ERROR("unpin bad %p\n", bo); | |
381 | return 0; | |
382 | } | |
383 | bo->pin_count--; | |
384 | if (bo->pin_count) | |
385 | return 0; | |
386 | ||
387 | for (i = 0; i < bo->placement.num_placement ; i++) | |
f1217ed0 | 388 | bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; |
97a875cb | 389 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
312fec14 DA |
390 | if (ret) |
391 | return ret; | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | int ast_bo_push_sysram(struct ast_bo *bo) | |
397 | { | |
398 | int i, ret; | |
399 | if (!bo->pin_count) { | |
400 | DRM_ERROR("unpin bad %p\n", bo); | |
401 | return 0; | |
402 | } | |
403 | bo->pin_count--; | |
404 | if (bo->pin_count) | |
405 | return 0; | |
406 | ||
407 | if (bo->kmap.virtual) | |
408 | ttm_bo_kunmap(&bo->kmap); | |
409 | ||
410 | ast_ttm_placement(bo, TTM_PL_FLAG_SYSTEM); | |
411 | for (i = 0; i < bo->placement.num_placement ; i++) | |
f1217ed0 | 412 | bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
312fec14 | 413 | |
97a875cb | 414 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
312fec14 DA |
415 | if (ret) { |
416 | DRM_ERROR("pushing to VRAM failed\n"); | |
417 | return ret; | |
418 | } | |
419 | return 0; | |
420 | } | |
421 | ||
422 | int ast_mmap(struct file *filp, struct vm_area_struct *vma) | |
423 | { | |
424 | struct drm_file *file_priv; | |
425 | struct ast_private *ast; | |
426 | ||
427 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) | |
884c6dab | 428 | return -EINVAL; |
312fec14 DA |
429 | |
430 | file_priv = filp->private_data; | |
431 | ast = file_priv->minor->dev->dev_private; | |
432 | return ttm_bo_mmap(filp, vma, &ast->ttm.bdev); | |
433 | } |