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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 | ||
cdd73306 | 83 | static void |
f9aa76a8 DA |
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 | ||
cdd73306 | 105 | static bool cirrus_ttm_bo_is_cirrus_bo(struct ttm_buffer_object *bo) |
f9aa76a8 DA |
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 | { | |
acb46527 DH |
151 | struct cirrus_bo *cirrusbo = cirrus_bo(bo); |
152 | ||
153 | return drm_vma_node_verify_access(&cirrusbo->gem.vma_node, filp); | |
f9aa76a8 DA |
154 | } |
155 | ||
156 | static int cirrus_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 cirrus_device *cirrus = cirrus_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(cirrus->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 cirrus_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
186 | { | |
187 | } | |
188 | ||
189 | static int cirrus_bo_move(struct ttm_buffer_object *bo, | |
190 | bool evict, bool interruptible, | |
97a875cb | 191 | bool no_wait_gpu, |
f9aa76a8 DA |
192 | struct ttm_mem_reg *new_mem) |
193 | { | |
194 | int r; | |
97a875cb | 195 | r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); |
f9aa76a8 DA |
196 | return r; |
197 | } | |
198 | ||
199 | ||
200 | static void cirrus_ttm_backend_destroy(struct ttm_tt *tt) | |
201 | { | |
202 | ttm_tt_fini(tt); | |
203 | kfree(tt); | |
204 | } | |
205 | ||
206 | static struct ttm_backend_func cirrus_tt_backend_func = { | |
207 | .destroy = &cirrus_ttm_backend_destroy, | |
208 | }; | |
209 | ||
210 | ||
cdd73306 | 211 | static struct ttm_tt *cirrus_ttm_tt_create(struct ttm_bo_device *bdev, |
f9aa76a8 DA |
212 | unsigned long size, uint32_t page_flags, |
213 | struct page *dummy_read_page) | |
214 | { | |
215 | struct ttm_tt *tt; | |
216 | ||
217 | tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); | |
218 | if (tt == NULL) | |
219 | return NULL; | |
220 | tt->func = &cirrus_tt_backend_func; | |
221 | if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { | |
222 | kfree(tt); | |
223 | return NULL; | |
224 | } | |
225 | return tt; | |
226 | } | |
227 | ||
228 | static int cirrus_ttm_tt_populate(struct ttm_tt *ttm) | |
229 | { | |
230 | return ttm_pool_populate(ttm); | |
231 | } | |
232 | ||
233 | static void cirrus_ttm_tt_unpopulate(struct ttm_tt *ttm) | |
234 | { | |
235 | ttm_pool_unpopulate(ttm); | |
236 | } | |
237 | ||
238 | struct ttm_bo_driver cirrus_bo_driver = { | |
239 | .ttm_tt_create = cirrus_ttm_tt_create, | |
240 | .ttm_tt_populate = cirrus_ttm_tt_populate, | |
241 | .ttm_tt_unpopulate = cirrus_ttm_tt_unpopulate, | |
242 | .init_mem_type = cirrus_bo_init_mem_type, | |
243 | .evict_flags = cirrus_bo_evict_flags, | |
244 | .move = cirrus_bo_move, | |
245 | .verify_access = cirrus_bo_verify_access, | |
246 | .io_mem_reserve = &cirrus_ttm_io_mem_reserve, | |
247 | .io_mem_free = &cirrus_ttm_io_mem_free, | |
248 | }; | |
249 | ||
250 | int cirrus_mm_init(struct cirrus_device *cirrus) | |
251 | { | |
252 | int ret; | |
253 | struct drm_device *dev = cirrus->dev; | |
254 | struct ttm_bo_device *bdev = &cirrus->ttm.bdev; | |
255 | ||
256 | ret = cirrus_ttm_global_init(cirrus); | |
257 | if (ret) | |
258 | return ret; | |
259 | ||
260 | ret = ttm_bo_device_init(&cirrus->ttm.bdev, | |
261 | cirrus->ttm.bo_global_ref.ref.object, | |
44d847b7 DH |
262 | &cirrus_bo_driver, |
263 | dev->anon_inode->i_mapping, | |
264 | DRM_FILE_PAGE_OFFSET, | |
f9aa76a8 DA |
265 | true); |
266 | if (ret) { | |
267 | DRM_ERROR("Error initialising bo driver; %d\n", ret); | |
268 | return ret; | |
269 | } | |
270 | ||
271 | ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, | |
272 | cirrus->mc.vram_size >> PAGE_SHIFT); | |
273 | if (ret) { | |
274 | DRM_ERROR("Failed ttm VRAM init: %d\n", ret); | |
275 | return ret; | |
276 | } | |
277 | ||
247d36d7 AL |
278 | cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0), |
279 | pci_resource_len(dev->pdev, 0)); | |
f9aa76a8 | 280 | |
93b4cc56 | 281 | cirrus->mm_inited = true; |
f9aa76a8 DA |
282 | return 0; |
283 | } | |
284 | ||
285 | void cirrus_mm_fini(struct cirrus_device *cirrus) | |
286 | { | |
93b4cc56 DA |
287 | if (!cirrus->mm_inited) |
288 | return; | |
289 | ||
f9aa76a8 DA |
290 | ttm_bo_device_release(&cirrus->ttm.bdev); |
291 | ||
292 | cirrus_ttm_global_release(cirrus); | |
293 | ||
247d36d7 AL |
294 | arch_phys_wc_del(cirrus->fb_mtrr); |
295 | cirrus->fb_mtrr = 0; | |
f9aa76a8 DA |
296 | } |
297 | ||
298 | void cirrus_ttm_placement(struct cirrus_bo *bo, int domain) | |
299 | { | |
300 | u32 c = 0; | |
f1217ed0 | 301 | unsigned i; |
f9aa76a8 DA |
302 | bo->placement.placement = bo->placements; |
303 | bo->placement.busy_placement = bo->placements; | |
304 | if (domain & TTM_PL_FLAG_VRAM) | |
f1217ed0 | 305 | bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; |
f9aa76a8 | 306 | if (domain & TTM_PL_FLAG_SYSTEM) |
f1217ed0 | 307 | bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; |
f9aa76a8 | 308 | if (!c) |
f1217ed0 | 309 | bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; |
f9aa76a8 DA |
310 | bo->placement.num_placement = c; |
311 | bo->placement.num_busy_placement = c; | |
f1217ed0 CK |
312 | for (i = 0; i < c; ++i) { |
313 | bo->placements[i].fpfn = 0; | |
314 | bo->placements[i].lpfn = 0; | |
315 | } | |
f9aa76a8 DA |
316 | } |
317 | ||
f9aa76a8 DA |
318 | int cirrus_bo_create(struct drm_device *dev, int size, int align, |
319 | uint32_t flags, struct cirrus_bo **pcirrusbo) | |
320 | { | |
321 | struct cirrus_device *cirrus = dev->dev_private; | |
322 | struct cirrus_bo *cirrusbo; | |
323 | size_t acc_size; | |
324 | int ret; | |
325 | ||
326 | cirrusbo = kzalloc(sizeof(struct cirrus_bo), GFP_KERNEL); | |
327 | if (!cirrusbo) | |
328 | return -ENOMEM; | |
329 | ||
330 | ret = drm_gem_object_init(dev, &cirrusbo->gem, size); | |
331 | if (ret) { | |
332 | kfree(cirrusbo); | |
333 | return ret; | |
334 | } | |
335 | ||
f9aa76a8 DA |
336 | cirrusbo->bo.bdev = &cirrus->ttm.bdev; |
337 | ||
338 | cirrus_ttm_placement(cirrusbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); | |
339 | ||
340 | acc_size = ttm_bo_dma_acc_size(&cirrus->ttm.bdev, size, | |
341 | sizeof(struct cirrus_bo)); | |
342 | ||
343 | ret = ttm_bo_init(&cirrus->ttm.bdev, &cirrusbo->bo, size, | |
344 | ttm_bo_type_device, &cirrusbo->placement, | |
0b91c4a1 | 345 | align >> PAGE_SHIFT, false, NULL, acc_size, |
f4f4e3e3 | 346 | NULL, NULL, cirrus_bo_ttm_destroy); |
f9aa76a8 DA |
347 | if (ret) |
348 | return ret; | |
349 | ||
350 | *pcirrusbo = cirrusbo; | |
351 | return 0; | |
352 | } | |
353 | ||
354 | static inline u64 cirrus_bo_gpu_offset(struct cirrus_bo *bo) | |
355 | { | |
356 | return bo->bo.offset; | |
357 | } | |
358 | ||
359 | int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr) | |
360 | { | |
361 | int i, ret; | |
362 | ||
363 | if (bo->pin_count) { | |
364 | bo->pin_count++; | |
365 | if (gpu_addr) | |
366 | *gpu_addr = cirrus_bo_gpu_offset(bo); | |
367 | } | |
368 | ||
369 | cirrus_ttm_placement(bo, pl_flag); | |
370 | for (i = 0; i < bo->placement.num_placement; i++) | |
f1217ed0 | 371 | bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
97a875cb | 372 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
f9aa76a8 DA |
373 | if (ret) |
374 | return ret; | |
375 | ||
376 | bo->pin_count = 1; | |
377 | if (gpu_addr) | |
378 | *gpu_addr = cirrus_bo_gpu_offset(bo); | |
379 | return 0; | |
380 | } | |
381 | ||
f9aa76a8 DA |
382 | int cirrus_bo_push_sysram(struct cirrus_bo *bo) |
383 | { | |
384 | int i, ret; | |
385 | if (!bo->pin_count) { | |
386 | DRM_ERROR("unpin bad %p\n", bo); | |
387 | return 0; | |
388 | } | |
389 | bo->pin_count--; | |
390 | if (bo->pin_count) | |
391 | return 0; | |
392 | ||
393 | if (bo->kmap.virtual) | |
394 | ttm_bo_kunmap(&bo->kmap); | |
395 | ||
396 | cirrus_ttm_placement(bo, TTM_PL_FLAG_SYSTEM); | |
397 | for (i = 0; i < bo->placement.num_placement ; i++) | |
f1217ed0 | 398 | bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
f9aa76a8 | 399 | |
97a875cb | 400 | ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
f9aa76a8 DA |
401 | if (ret) { |
402 | DRM_ERROR("pushing to VRAM failed\n"); | |
403 | return ret; | |
404 | } | |
405 | return 0; | |
406 | } | |
407 | ||
408 | int cirrus_mmap(struct file *filp, struct vm_area_struct *vma) | |
409 | { | |
410 | struct drm_file *file_priv; | |
411 | struct cirrus_device *cirrus; | |
412 | ||
413 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) | |
884c6dab | 414 | return -EINVAL; |
f9aa76a8 DA |
415 | |
416 | file_priv = filp->private_data; | |
417 | cirrus = file_priv->minor->dev->dev_private; | |
418 | return ttm_bo_mmap(filp, vma, &cirrus->ttm.bdev); | |
419 | } |