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414c4531 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> |
414c4531 DA |
29 | #include "mgag200_drv.h" |
30 | #include <ttm/ttm_page_alloc.h> | |
31 | ||
32 | static inline struct mga_device * | |
33 | mgag200_bdev(struct ttm_bo_device *bd) | |
34 | { | |
35 | return container_of(bd, struct mga_device, ttm.bdev); | |
36 | } | |
37 | ||
38 | static int | |
39 | mgag200_ttm_mem_global_init(struct drm_global_reference *ref) | |
40 | { | |
41 | return ttm_mem_global_init(ref->object); | |
42 | } | |
43 | ||
44 | static void | |
45 | mgag200_ttm_mem_global_release(struct drm_global_reference *ref) | |
46 | { | |
47 | ttm_mem_global_release(ref->object); | |
48 | } | |
49 | ||
50 | static int mgag200_ttm_global_init(struct mga_device *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 = &mgag200_ttm_mem_global_init; | |
59 | global_ref->release = &mgag200_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 | ||
f242a64b | 83 | static void |
414c4531 DA |
84 | mgag200_ttm_global_release(struct mga_device *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 mgag200_bo_ttm_destroy(struct ttm_buffer_object *tbo) | |
96 | { | |
97 | struct mgag200_bo *bo; | |
98 | ||
99 | bo = container_of(tbo, struct mgag200_bo, bo); | |
100 | ||
101 | drm_gem_object_release(&bo->gem); | |
102 | kfree(bo); | |
103 | } | |
104 | ||
f242a64b | 105 | static bool mgag200_ttm_bo_is_mgag200_bo(struct ttm_buffer_object *bo) |
414c4531 DA |
106 | { |
107 | if (bo->destroy == &mgag200_bo_ttm_destroy) | |
108 | return true; | |
109 | return false; | |
110 | } | |
111 | ||
112 | static int | |
113 | mgag200_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 | mgag200_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) | |
139 | { | |
140 | struct mgag200_bo *mgabo = mgag200_bo(bo); | |
141 | ||
142 | if (!mgag200_ttm_bo_is_mgag200_bo(bo)) | |
143 | return; | |
144 | ||
145 | mgag200_ttm_placement(mgabo, TTM_PL_FLAG_SYSTEM); | |
146 | *pl = mgabo->placement; | |
147 | } | |
148 | ||
149 | static int mgag200_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp) | |
150 | { | |
acb46527 DH |
151 | struct mgag200_bo *mgabo = mgag200_bo(bo); |
152 | ||
153 | return drm_vma_node_verify_access(&mgabo->gem.vma_node, filp); | |
414c4531 DA |
154 | } |
155 | ||
156 | static int mgag200_ttm_io_mem_reserve(struct ttm_bo_device *bdev, | |
157 | struct ttm_mem_reg *mem) | |
158 | { | |
159 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
160 | struct mga_device *mdev = mgag200_bdev(bdev); | |
161 | ||
162 | mem->bus.addr = NULL; | |
163 | mem->bus.offset = 0; | |
164 | mem->bus.size = mem->num_pages << PAGE_SHIFT; | |
165 | mem->bus.base = 0; | |
166 | mem->bus.is_iomem = false; | |
167 | if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) | |
168 | return -EINVAL; | |
169 | switch (mem->mem_type) { | |
170 | case TTM_PL_SYSTEM: | |
171 | /* system memory */ | |
172 | return 0; | |
173 | case TTM_PL_VRAM: | |
174 | mem->bus.offset = mem->start << PAGE_SHIFT; | |
175 | mem->bus.base = pci_resource_start(mdev->dev->pdev, 0); | |
176 | mem->bus.is_iomem = true; | |
177 | break; | |
178 | default: | |
179 | return -EINVAL; | |
180 | break; | |
181 | } | |
182 | return 0; | |
183 | } | |
184 | ||
185 | static void mgag200_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
186 | { | |
187 | } | |
188 | ||
414c4531 DA |
189 | static void mgag200_ttm_backend_destroy(struct ttm_tt *tt) |
190 | { | |
191 | ttm_tt_fini(tt); | |
192 | kfree(tt); | |
193 | } | |
194 | ||
195 | static struct ttm_backend_func mgag200_tt_backend_func = { | |
196 | .destroy = &mgag200_ttm_backend_destroy, | |
197 | }; | |
198 | ||
199 | ||
f242a64b | 200 | static struct ttm_tt *mgag200_ttm_tt_create(struct ttm_bo_device *bdev, |
414c4531 DA |
201 | unsigned long size, uint32_t page_flags, |
202 | struct page *dummy_read_page) | |
203 | { | |
204 | struct ttm_tt *tt; | |
205 | ||
206 | tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); | |
207 | if (tt == NULL) | |
208 | return NULL; | |
209 | tt->func = &mgag200_tt_backend_func; | |
210 | if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { | |
211 | kfree(tt); | |
212 | return NULL; | |
213 | } | |
214 | return tt; | |
215 | } | |
216 | ||
217 | static int mgag200_ttm_tt_populate(struct ttm_tt *ttm) | |
218 | { | |
219 | return ttm_pool_populate(ttm); | |
220 | } | |
221 | ||
222 | static void mgag200_ttm_tt_unpopulate(struct ttm_tt *ttm) | |
223 | { | |
224 | ttm_pool_unpopulate(ttm); | |
225 | } | |
226 | ||
227 | struct ttm_bo_driver mgag200_bo_driver = { | |
228 | .ttm_tt_create = mgag200_ttm_tt_create, | |
229 | .ttm_tt_populate = mgag200_ttm_tt_populate, | |
230 | .ttm_tt_unpopulate = mgag200_ttm_tt_unpopulate, | |
231 | .init_mem_type = mgag200_bo_init_mem_type, | |
232 | .evict_flags = mgag200_bo_evict_flags, | |
18885778 | 233 | .move = NULL, |
414c4531 DA |
234 | .verify_access = mgag200_bo_verify_access, |
235 | .io_mem_reserve = &mgag200_ttm_io_mem_reserve, | |
236 | .io_mem_free = &mgag200_ttm_io_mem_free, | |
98c2872a CK |
237 | .lru_tail = &ttm_bo_default_lru_tail, |
238 | .swap_lru_tail = &ttm_bo_default_swap_lru_tail, | |
414c4531 DA |
239 | }; |
240 | ||
241 | int mgag200_mm_init(struct mga_device *mdev) | |
242 | { | |
243 | int ret; | |
244 | struct drm_device *dev = mdev->dev; | |
245 | struct ttm_bo_device *bdev = &mdev->ttm.bdev; | |
246 | ||
247 | ret = mgag200_ttm_global_init(mdev); | |
248 | if (ret) | |
249 | return ret; | |
250 | ||
251 | ret = ttm_bo_device_init(&mdev->ttm.bdev, | |
252 | mdev->ttm.bo_global_ref.ref.object, | |
44d847b7 DH |
253 | &mgag200_bo_driver, |
254 | dev->anon_inode->i_mapping, | |
255 | DRM_FILE_PAGE_OFFSET, | |
414c4531 DA |
256 | true); |
257 | if (ret) { | |
258 | DRM_ERROR("Error initialising bo driver; %d\n", ret); | |
259 | return ret; | |
260 | } | |
261 | ||
262 | ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, mdev->mc.vram_size >> PAGE_SHIFT); | |
263 | if (ret) { | |
264 | DRM_ERROR("Failed ttm VRAM init: %d\n", ret); | |
265 | return ret; | |
266 | } | |
267 | ||
247d36d7 AL |
268 | mdev->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0), |
269 | pci_resource_len(dev->pdev, 0)); | |
414c4531 DA |
270 | |
271 | return 0; | |
272 | } | |
273 | ||
274 | void mgag200_mm_fini(struct mga_device *mdev) | |
275 | { | |
414c4531 DA |
276 | ttm_bo_device_release(&mdev->ttm.bdev); |
277 | ||
278 | mgag200_ttm_global_release(mdev); | |
279 | ||
247d36d7 AL |
280 | arch_phys_wc_del(mdev->fb_mtrr); |
281 | mdev->fb_mtrr = 0; | |
414c4531 DA |
282 | } |
283 | ||
284 | void mgag200_ttm_placement(struct mgag200_bo *bo, int domain) | |
285 | { | |
286 | u32 c = 0; | |
f1217ed0 CK |
287 | unsigned i; |
288 | ||
414c4531 DA |
289 | bo->placement.placement = bo->placements; |
290 | bo->placement.busy_placement = bo->placements; | |
291 | if (domain & TTM_PL_FLAG_VRAM) | |
f1217ed0 | 292 | bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; |
414c4531 | 293 | if (domain & TTM_PL_FLAG_SYSTEM) |
f1217ed0 | 294 | bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; |
414c4531 | 295 | if (!c) |
f1217ed0 | 296 | bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; |
414c4531 DA |
297 | bo->placement.num_placement = c; |
298 | bo->placement.num_busy_placement = c; | |
f1217ed0 CK |
299 | for (i = 0; i < c; ++i) { |
300 | bo->placements[i].fpfn = 0; | |
301 | bo->placements[i].lpfn = 0; | |
302 | } | |
414c4531 DA |
303 | } |
304 | ||
414c4531 DA |
305 | int mgag200_bo_create(struct drm_device *dev, int size, int align, |
306 | uint32_t flags, struct mgag200_bo **pmgabo) | |
307 | { | |
308 | struct mga_device *mdev = dev->dev_private; | |
309 | struct mgag200_bo *mgabo; | |
310 | size_t acc_size; | |
311 | int ret; | |
312 | ||
313 | mgabo = kzalloc(sizeof(struct mgag200_bo), GFP_KERNEL); | |
314 | if (!mgabo) | |
315 | return -ENOMEM; | |
316 | ||
317 | ret = drm_gem_object_init(dev, &mgabo->gem, size); | |
318 | if (ret) { | |
319 | kfree(mgabo); | |
320 | return ret; | |
321 | } | |
322 | ||
414c4531 DA |
323 | mgabo->bo.bdev = &mdev->ttm.bdev; |
324 | ||
325 | mgag200_ttm_placement(mgabo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); | |
326 | ||
327 | acc_size = ttm_bo_dma_acc_size(&mdev->ttm.bdev, size, | |
328 | sizeof(struct mgag200_bo)); | |
329 | ||
330 | ret = ttm_bo_init(&mdev->ttm.bdev, &mgabo->bo, size, | |
331 | ttm_bo_type_device, &mgabo->placement, | |
0b91c4a1 | 332 | align >> PAGE_SHIFT, false, NULL, acc_size, |
f4f4e3e3 | 333 | NULL, NULL, mgag200_bo_ttm_destroy); |
414c4531 DA |
334 | if (ret) |
335 | return ret; | |
336 | ||
337 | *pmgabo = mgabo; | |
338 | return 0; | |
339 | } | |
340 | ||
341 | static inline u64 mgag200_bo_gpu_offset(struct mgag200_bo *bo) | |
342 | { | |
343 | return bo->bo.offset; | |
344 | } | |
345 | ||
346 | int mgag200_bo_pin(struct mgag200_bo *bo, u32 pl_flag, u64 *gpu_addr) | |
347 | { | |
348 | int i, ret; | |
349 | ||
350 | if (bo->pin_count) { | |
351 | bo->pin_count++; | |
352 | if (gpu_addr) | |
353 | *gpu_addr = mgag200_bo_gpu_offset(bo); | |
030f19f0 | 354 | return 0; |
414c4531 DA |
355 | } |
356 | ||
357 | mgag200_ttm_placement(bo, pl_flag); | |
358 | for (i = 0; i < bo->placement.num_placement; i++) | |
f1217ed0 | 359 | bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
97a875cb | 360 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
414c4531 DA |
361 | if (ret) |
362 | return ret; | |
363 | ||
364 | bo->pin_count = 1; | |
365 | if (gpu_addr) | |
366 | *gpu_addr = mgag200_bo_gpu_offset(bo); | |
367 | return 0; | |
368 | } | |
369 | ||
370 | int mgag200_bo_unpin(struct mgag200_bo *bo) | |
371 | { | |
f9fe4b9b | 372 | int i; |
414c4531 DA |
373 | if (!bo->pin_count) { |
374 | DRM_ERROR("unpin bad %p\n", bo); | |
375 | return 0; | |
376 | } | |
377 | bo->pin_count--; | |
378 | if (bo->pin_count) | |
379 | return 0; | |
380 | ||
381 | for (i = 0; i < bo->placement.num_placement ; i++) | |
f1217ed0 | 382 | bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; |
f9fe4b9b | 383 | return ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
414c4531 DA |
384 | } |
385 | ||
386 | int mgag200_bo_push_sysram(struct mgag200_bo *bo) | |
387 | { | |
388 | int i, ret; | |
389 | if (!bo->pin_count) { | |
390 | DRM_ERROR("unpin bad %p\n", bo); | |
391 | return 0; | |
392 | } | |
393 | bo->pin_count--; | |
394 | if (bo->pin_count) | |
395 | return 0; | |
396 | ||
397 | if (bo->kmap.virtual) | |
398 | ttm_bo_kunmap(&bo->kmap); | |
399 | ||
400 | mgag200_ttm_placement(bo, TTM_PL_FLAG_SYSTEM); | |
401 | for (i = 0; i < bo->placement.num_placement ; i++) | |
f1217ed0 | 402 | bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
414c4531 | 403 | |
97a875cb | 404 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
414c4531 DA |
405 | if (ret) { |
406 | DRM_ERROR("pushing to VRAM failed\n"); | |
407 | return ret; | |
408 | } | |
409 | return 0; | |
410 | } | |
411 | ||
412 | int mgag200_mmap(struct file *filp, struct vm_area_struct *vma) | |
413 | { | |
414 | struct drm_file *file_priv; | |
415 | struct mga_device *mdev; | |
416 | ||
417 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) | |
884c6dab | 418 | return -EINVAL; |
414c4531 DA |
419 | |
420 | file_priv = filp->private_data; | |
421 | mdev = file_priv->minor->dev->dev_private; | |
422 | return ttm_bo_mmap(filp, vma, &mdev->ttm.bdev); | |
423 | } |