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Commit | Line | Data |
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c8b75bca EA |
1 | /* |
2 | * Copyright © 2015 Broadcom | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
72f793f1 EA |
9 | /** |
10 | * DOC: VC4 GEM BO management support | |
c8b75bca EA |
11 | * |
12 | * The VC4 GPU architecture (both scanout and rendering) has direct | |
13 | * access to system memory with no MMU in between. To support it, we | |
14 | * use the GEM CMA helper functions to allocate contiguous ranges of | |
15 | * physical memory for our BOs. | |
c826a6e1 EA |
16 | * |
17 | * Since the CMA allocator is very slow, we keep a cache of recently | |
18 | * freed BOs around so that the kernel's allocation of objects for 3D | |
19 | * rendering can return quickly. | |
c8b75bca EA |
20 | */ |
21 | ||
cdec4d36 EA |
22 | #include <linux/dma-buf.h> |
23 | ||
c8b75bca | 24 | #include "vc4_drv.h" |
d5bc60f6 | 25 | #include "uapi/drm/vc4_drm.h" |
c8b75bca | 26 | |
f3099462 EA |
27 | static const char * const bo_type_names[] = { |
28 | "kernel", | |
29 | "V3D", | |
30 | "V3D shader", | |
31 | "dumb", | |
32 | "binner", | |
33 | "RCL", | |
34 | "BCL", | |
35 | "kernel BO cache", | |
36 | }; | |
37 | ||
38 | static bool is_user_label(int label) | |
39 | { | |
40 | return label >= VC4_BO_TYPE_COUNT; | |
41 | } | |
42 | ||
c826a6e1 EA |
43 | static void vc4_bo_stats_dump(struct vc4_dev *vc4) |
44 | { | |
f3099462 EA |
45 | int i; |
46 | ||
47 | for (i = 0; i < vc4->num_labels; i++) { | |
48 | if (!vc4->bo_labels[i].num_allocated) | |
49 | continue; | |
50 | ||
51 | DRM_INFO("%30s: %6dkb BOs (%d)\n", | |
52 | vc4->bo_labels[i].name, | |
53 | vc4->bo_labels[i].size_allocated / 1024, | |
54 | vc4->bo_labels[i].num_allocated); | |
55 | } | |
b9f19259 BB |
56 | |
57 | mutex_lock(&vc4->purgeable.lock); | |
58 | if (vc4->purgeable.num) | |
59 | DRM_INFO("%30s: %6zdkb BOs (%d)\n", "userspace BO cache", | |
60 | vc4->purgeable.size / 1024, vc4->purgeable.num); | |
61 | ||
62 | if (vc4->purgeable.purged_num) | |
63 | DRM_INFO("%30s: %6zdkb BOs (%d)\n", "total purged BO", | |
64 | vc4->purgeable.purged_size / 1024, | |
65 | vc4->purgeable.purged_num); | |
66 | mutex_unlock(&vc4->purgeable.lock); | |
c826a6e1 EA |
67 | } |
68 | ||
69 | #ifdef CONFIG_DEBUG_FS | |
70 | int vc4_bo_stats_debugfs(struct seq_file *m, void *unused) | |
71 | { | |
72 | struct drm_info_node *node = (struct drm_info_node *)m->private; | |
73 | struct drm_device *dev = node->minor->dev; | |
74 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
f3099462 | 75 | int i; |
c826a6e1 | 76 | |
c826a6e1 | 77 | mutex_lock(&vc4->bo_lock); |
f3099462 EA |
78 | for (i = 0; i < vc4->num_labels; i++) { |
79 | if (!vc4->bo_labels[i].num_allocated) | |
80 | continue; | |
81 | ||
82 | seq_printf(m, "%30s: %6dkb BOs (%d)\n", | |
83 | vc4->bo_labels[i].name, | |
84 | vc4->bo_labels[i].size_allocated / 1024, | |
85 | vc4->bo_labels[i].num_allocated); | |
86 | } | |
c826a6e1 EA |
87 | mutex_unlock(&vc4->bo_lock); |
88 | ||
b9f19259 BB |
89 | mutex_lock(&vc4->purgeable.lock); |
90 | if (vc4->purgeable.num) | |
e073db5c | 91 | seq_printf(m, "%30s: %6zdkb BOs (%d)\n", "userspace BO cache", |
b9f19259 BB |
92 | vc4->purgeable.size / 1024, vc4->purgeable.num); |
93 | ||
94 | if (vc4->purgeable.purged_num) | |
e073db5c | 95 | seq_printf(m, "%30s: %6zdkb BOs (%d)\n", "total purged BO", |
b9f19259 BB |
96 | vc4->purgeable.purged_size / 1024, |
97 | vc4->purgeable.purged_num); | |
98 | mutex_unlock(&vc4->purgeable.lock); | |
99 | ||
c826a6e1 EA |
100 | return 0; |
101 | } | |
102 | #endif | |
103 | ||
f3099462 EA |
104 | /* Takes ownership of *name and returns the appropriate slot for it in |
105 | * the bo_labels[] array, extending it as necessary. | |
106 | * | |
107 | * This is inefficient and could use a hash table instead of walking | |
108 | * an array and strcmp()ing. However, the assumption is that user | |
109 | * labeling will be infrequent (scanout buffers and other long-lived | |
110 | * objects, or debug driver builds), so we can live with it for now. | |
111 | */ | |
112 | static int vc4_get_user_label(struct vc4_dev *vc4, const char *name) | |
113 | { | |
114 | int i; | |
115 | int free_slot = -1; | |
116 | ||
117 | for (i = 0; i < vc4->num_labels; i++) { | |
118 | if (!vc4->bo_labels[i].name) { | |
119 | free_slot = i; | |
120 | } else if (strcmp(vc4->bo_labels[i].name, name) == 0) { | |
121 | kfree(name); | |
122 | return i; | |
123 | } | |
124 | } | |
125 | ||
126 | if (free_slot != -1) { | |
127 | WARN_ON(vc4->bo_labels[free_slot].num_allocated != 0); | |
128 | vc4->bo_labels[free_slot].name = name; | |
129 | return free_slot; | |
130 | } else { | |
131 | u32 new_label_count = vc4->num_labels + 1; | |
132 | struct vc4_label *new_labels = | |
133 | krealloc(vc4->bo_labels, | |
134 | new_label_count * sizeof(*new_labels), | |
135 | GFP_KERNEL); | |
136 | ||
137 | if (!new_labels) { | |
138 | kfree(name); | |
139 | return -1; | |
140 | } | |
141 | ||
142 | free_slot = vc4->num_labels; | |
143 | vc4->bo_labels = new_labels; | |
144 | vc4->num_labels = new_label_count; | |
145 | ||
146 | vc4->bo_labels[free_slot].name = name; | |
147 | vc4->bo_labels[free_slot].num_allocated = 0; | |
148 | vc4->bo_labels[free_slot].size_allocated = 0; | |
149 | ||
150 | return free_slot; | |
151 | } | |
152 | } | |
153 | ||
154 | static void vc4_bo_set_label(struct drm_gem_object *gem_obj, int label) | |
155 | { | |
156 | struct vc4_bo *bo = to_vc4_bo(gem_obj); | |
157 | struct vc4_dev *vc4 = to_vc4_dev(gem_obj->dev); | |
158 | ||
159 | lockdep_assert_held(&vc4->bo_lock); | |
160 | ||
161 | if (label != -1) { | |
162 | vc4->bo_labels[label].num_allocated++; | |
163 | vc4->bo_labels[label].size_allocated += gem_obj->size; | |
164 | } | |
165 | ||
166 | vc4->bo_labels[bo->label].num_allocated--; | |
167 | vc4->bo_labels[bo->label].size_allocated -= gem_obj->size; | |
168 | ||
169 | if (vc4->bo_labels[bo->label].num_allocated == 0 && | |
170 | is_user_label(bo->label)) { | |
171 | /* Free user BO label slots on last unreference. | |
172 | * Slots are just where we track the stats for a given | |
173 | * name, and once a name is unused we can reuse that | |
174 | * slot. | |
175 | */ | |
176 | kfree(vc4->bo_labels[bo->label].name); | |
177 | vc4->bo_labels[bo->label].name = NULL; | |
178 | } | |
179 | ||
180 | bo->label = label; | |
181 | } | |
182 | ||
c826a6e1 EA |
183 | static uint32_t bo_page_index(size_t size) |
184 | { | |
185 | return (size / PAGE_SIZE) - 1; | |
186 | } | |
187 | ||
c826a6e1 | 188 | static void vc4_bo_destroy(struct vc4_bo *bo) |
c8b75bca | 189 | { |
c826a6e1 | 190 | struct drm_gem_object *obj = &bo->base.base; |
4e6b1e91 EA |
191 | struct vc4_dev *vc4 = to_vc4_dev(obj->dev); |
192 | ||
193 | lockdep_assert_held(&vc4->bo_lock); | |
f3099462 EA |
194 | |
195 | vc4_bo_set_label(obj, -1); | |
c826a6e1 | 196 | |
463873d5 EA |
197 | if (bo->validated_shader) { |
198 | kfree(bo->validated_shader->texture_samples); | |
199 | kfree(bo->validated_shader); | |
200 | bo->validated_shader = NULL; | |
201 | } | |
202 | ||
24bb206f | 203 | reservation_object_fini(&bo->_resv); |
cdec4d36 | 204 | |
c826a6e1 EA |
205 | drm_gem_cma_free_object(obj); |
206 | } | |
207 | ||
c826a6e1 EA |
208 | static void vc4_bo_remove_from_cache(struct vc4_bo *bo) |
209 | { | |
4e6b1e91 EA |
210 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); |
211 | ||
212 | lockdep_assert_held(&vc4->bo_lock); | |
c826a6e1 EA |
213 | list_del(&bo->unref_head); |
214 | list_del(&bo->size_head); | |
215 | } | |
216 | ||
217 | static struct list_head *vc4_get_cache_list_for_size(struct drm_device *dev, | |
218 | size_t size) | |
219 | { | |
220 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
221 | uint32_t page_index = bo_page_index(size); | |
222 | ||
223 | if (vc4->bo_cache.size_list_size <= page_index) { | |
224 | uint32_t new_size = max(vc4->bo_cache.size_list_size * 2, | |
225 | page_index + 1); | |
226 | struct list_head *new_list; | |
227 | uint32_t i; | |
228 | ||
229 | new_list = kmalloc_array(new_size, sizeof(struct list_head), | |
230 | GFP_KERNEL); | |
231 | if (!new_list) | |
232 | return NULL; | |
233 | ||
234 | /* Rebase the old cached BO lists to their new list | |
235 | * head locations. | |
236 | */ | |
237 | for (i = 0; i < vc4->bo_cache.size_list_size; i++) { | |
238 | struct list_head *old_list = | |
239 | &vc4->bo_cache.size_list[i]; | |
240 | ||
241 | if (list_empty(old_list)) | |
242 | INIT_LIST_HEAD(&new_list[i]); | |
243 | else | |
244 | list_replace(old_list, &new_list[i]); | |
245 | } | |
246 | /* And initialize the brand new BO list heads. */ | |
247 | for (i = vc4->bo_cache.size_list_size; i < new_size; i++) | |
248 | INIT_LIST_HEAD(&new_list[i]); | |
249 | ||
250 | kfree(vc4->bo_cache.size_list); | |
251 | vc4->bo_cache.size_list = new_list; | |
252 | vc4->bo_cache.size_list_size = new_size; | |
253 | } | |
254 | ||
255 | return &vc4->bo_cache.size_list[page_index]; | |
256 | } | |
257 | ||
ea903838 | 258 | static void vc4_bo_cache_purge(struct drm_device *dev) |
c826a6e1 EA |
259 | { |
260 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
261 | ||
262 | mutex_lock(&vc4->bo_lock); | |
263 | while (!list_empty(&vc4->bo_cache.time_list)) { | |
264 | struct vc4_bo *bo = list_last_entry(&vc4->bo_cache.time_list, | |
265 | struct vc4_bo, unref_head); | |
266 | vc4_bo_remove_from_cache(bo); | |
267 | vc4_bo_destroy(bo); | |
268 | } | |
269 | mutex_unlock(&vc4->bo_lock); | |
270 | } | |
271 | ||
b9f19259 BB |
272 | void vc4_bo_add_to_purgeable_pool(struct vc4_bo *bo) |
273 | { | |
274 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
275 | ||
276 | mutex_lock(&vc4->purgeable.lock); | |
277 | list_add_tail(&bo->size_head, &vc4->purgeable.list); | |
278 | vc4->purgeable.num++; | |
279 | vc4->purgeable.size += bo->base.base.size; | |
280 | mutex_unlock(&vc4->purgeable.lock); | |
281 | } | |
282 | ||
283 | static void vc4_bo_remove_from_purgeable_pool_locked(struct vc4_bo *bo) | |
284 | { | |
285 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
286 | ||
287 | /* list_del_init() is used here because the caller might release | |
288 | * the purgeable lock in order to acquire the madv one and update the | |
289 | * madv status. | |
290 | * During this short period of time a user might decide to mark | |
291 | * the BO as unpurgeable, and if bo->madv is set to | |
292 | * VC4_MADV_DONTNEED it will try to remove the BO from the | |
293 | * purgeable list which will fail if the ->next/prev fields | |
294 | * are set to LIST_POISON1/LIST_POISON2 (which is what | |
295 | * list_del() does). | |
296 | * Re-initializing the list element guarantees that list_del() | |
297 | * will work correctly even if it's a NOP. | |
298 | */ | |
299 | list_del_init(&bo->size_head); | |
300 | vc4->purgeable.num--; | |
301 | vc4->purgeable.size -= bo->base.base.size; | |
302 | } | |
303 | ||
304 | void vc4_bo_remove_from_purgeable_pool(struct vc4_bo *bo) | |
305 | { | |
306 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
307 | ||
308 | mutex_lock(&vc4->purgeable.lock); | |
309 | vc4_bo_remove_from_purgeable_pool_locked(bo); | |
310 | mutex_unlock(&vc4->purgeable.lock); | |
311 | } | |
312 | ||
313 | static void vc4_bo_purge(struct drm_gem_object *obj) | |
314 | { | |
315 | struct vc4_bo *bo = to_vc4_bo(obj); | |
316 | struct drm_device *dev = obj->dev; | |
317 | ||
318 | WARN_ON(!mutex_is_locked(&bo->madv_lock)); | |
319 | WARN_ON(bo->madv != VC4_MADV_DONTNEED); | |
320 | ||
321 | drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); | |
322 | ||
323 | dma_free_wc(dev->dev, obj->size, bo->base.vaddr, bo->base.paddr); | |
324 | bo->base.vaddr = NULL; | |
325 | bo->madv = __VC4_MADV_PURGED; | |
326 | } | |
327 | ||
328 | static void vc4_bo_userspace_cache_purge(struct drm_device *dev) | |
329 | { | |
330 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
331 | ||
332 | mutex_lock(&vc4->purgeable.lock); | |
333 | while (!list_empty(&vc4->purgeable.list)) { | |
334 | struct vc4_bo *bo = list_first_entry(&vc4->purgeable.list, | |
335 | struct vc4_bo, size_head); | |
336 | struct drm_gem_object *obj = &bo->base.base; | |
337 | size_t purged_size = 0; | |
338 | ||
339 | vc4_bo_remove_from_purgeable_pool_locked(bo); | |
340 | ||
341 | /* Release the purgeable lock while we're purging the BO so | |
342 | * that other people can continue inserting things in the | |
343 | * purgeable pool without having to wait for all BOs to be | |
344 | * purged. | |
345 | */ | |
346 | mutex_unlock(&vc4->purgeable.lock); | |
347 | mutex_lock(&bo->madv_lock); | |
348 | ||
349 | /* Since we released the purgeable pool lock before acquiring | |
350 | * the BO madv one, the user may have marked the BO as WILLNEED | |
351 | * and re-used it in the meantime. | |
352 | * Before purging the BO we need to make sure | |
353 | * - it is still marked as DONTNEED | |
354 | * - it has not been re-inserted in the purgeable list | |
355 | * - it is not used by HW blocks | |
356 | * If one of these conditions is not met, just skip the entry. | |
357 | */ | |
358 | if (bo->madv == VC4_MADV_DONTNEED && | |
359 | list_empty(&bo->size_head) && | |
360 | !refcount_read(&bo->usecnt)) { | |
361 | purged_size = bo->base.base.size; | |
362 | vc4_bo_purge(obj); | |
363 | } | |
364 | mutex_unlock(&bo->madv_lock); | |
365 | mutex_lock(&vc4->purgeable.lock); | |
366 | ||
367 | if (purged_size) { | |
368 | vc4->purgeable.purged_size += purged_size; | |
369 | vc4->purgeable.purged_num++; | |
370 | } | |
371 | } | |
372 | mutex_unlock(&vc4->purgeable.lock); | |
373 | } | |
374 | ||
c826a6e1 | 375 | static struct vc4_bo *vc4_bo_get_from_cache(struct drm_device *dev, |
f3099462 EA |
376 | uint32_t size, |
377 | enum vc4_kernel_bo_type type) | |
c826a6e1 EA |
378 | { |
379 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
380 | uint32_t page_index = bo_page_index(size); | |
381 | struct vc4_bo *bo = NULL; | |
382 | ||
383 | size = roundup(size, PAGE_SIZE); | |
384 | ||
385 | mutex_lock(&vc4->bo_lock); | |
386 | if (page_index >= vc4->bo_cache.size_list_size) | |
387 | goto out; | |
388 | ||
389 | if (list_empty(&vc4->bo_cache.size_list[page_index])) | |
390 | goto out; | |
391 | ||
392 | bo = list_first_entry(&vc4->bo_cache.size_list[page_index], | |
393 | struct vc4_bo, size_head); | |
394 | vc4_bo_remove_from_cache(bo); | |
395 | kref_init(&bo->base.base.refcount); | |
396 | ||
397 | out: | |
f3099462 EA |
398 | if (bo) |
399 | vc4_bo_set_label(&bo->base.base, type); | |
c826a6e1 EA |
400 | mutex_unlock(&vc4->bo_lock); |
401 | return bo; | |
402 | } | |
403 | ||
404 | /** | |
405 | * vc4_gem_create_object - Implementation of driver->gem_create_object. | |
72f793f1 EA |
406 | * @dev: DRM device |
407 | * @size: Size in bytes of the memory the object will reference | |
c826a6e1 EA |
408 | * |
409 | * This lets the CMA helpers allocate object structs for us, and keep | |
410 | * our BO stats correct. | |
411 | */ | |
412 | struct drm_gem_object *vc4_create_object(struct drm_device *dev, size_t size) | |
413 | { | |
414 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
415 | struct vc4_bo *bo; | |
416 | ||
417 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); | |
418 | if (!bo) | |
419 | return ERR_PTR(-ENOMEM); | |
420 | ||
b9f19259 BB |
421 | bo->madv = VC4_MADV_WILLNEED; |
422 | refcount_set(&bo->usecnt, 0); | |
423 | mutex_init(&bo->madv_lock); | |
c826a6e1 | 424 | mutex_lock(&vc4->bo_lock); |
f3099462 EA |
425 | bo->label = VC4_BO_TYPE_KERNEL; |
426 | vc4->bo_labels[VC4_BO_TYPE_KERNEL].num_allocated++; | |
427 | vc4->bo_labels[VC4_BO_TYPE_KERNEL].size_allocated += size; | |
c826a6e1 | 428 | mutex_unlock(&vc4->bo_lock); |
24bb206f HV |
429 | bo->resv = &bo->_resv; |
430 | reservation_object_init(bo->resv); | |
c826a6e1 EA |
431 | |
432 | return &bo->base.base; | |
433 | } | |
434 | ||
435 | struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t unaligned_size, | |
f3099462 | 436 | bool allow_unzeroed, enum vc4_kernel_bo_type type) |
c826a6e1 EA |
437 | { |
438 | size_t size = roundup(unaligned_size, PAGE_SIZE); | |
439 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
c8b75bca | 440 | struct drm_gem_cma_object *cma_obj; |
eb981383 | 441 | struct vc4_bo *bo; |
c8b75bca | 442 | |
c826a6e1 | 443 | if (size == 0) |
2c68f1fc | 444 | return ERR_PTR(-EINVAL); |
c826a6e1 EA |
445 | |
446 | /* First, try to get a vc4_bo from the kernel BO cache. */ | |
f3099462 | 447 | bo = vc4_bo_get_from_cache(dev, size, type); |
eb981383 EA |
448 | if (bo) { |
449 | if (!allow_unzeroed) | |
450 | memset(bo->base.vaddr, 0, bo->base.base.size); | |
451 | return bo; | |
c826a6e1 EA |
452 | } |
453 | ||
454 | cma_obj = drm_gem_cma_create(dev, size); | |
455 | if (IS_ERR(cma_obj)) { | |
456 | /* | |
457 | * If we've run out of CMA memory, kill the cache of | |
458 | * CMA allocations we've got laying around and try again. | |
459 | */ | |
460 | vc4_bo_cache_purge(dev); | |
b9f19259 BB |
461 | cma_obj = drm_gem_cma_create(dev, size); |
462 | } | |
c826a6e1 | 463 | |
b9f19259 BB |
464 | if (IS_ERR(cma_obj)) { |
465 | /* | |
466 | * Still not enough CMA memory, purge the userspace BO | |
467 | * cache and retry. | |
468 | * This is sub-optimal since we purge the whole userspace | |
469 | * BO cache which forces user that want to re-use the BO to | |
470 | * restore its initial content. | |
471 | * Ideally, we should purge entries one by one and retry | |
472 | * after each to see if CMA allocation succeeds. Or even | |
473 | * better, try to find an entry with at least the same | |
474 | * size. | |
475 | */ | |
476 | vc4_bo_userspace_cache_purge(dev); | |
c826a6e1 | 477 | cma_obj = drm_gem_cma_create(dev, size); |
b9f19259 BB |
478 | } |
479 | ||
480 | if (IS_ERR(cma_obj)) { | |
481 | DRM_ERROR("Failed to allocate from CMA:\n"); | |
482 | vc4_bo_stats_dump(vc4); | |
483 | return ERR_PTR(-ENOMEM); | |
c826a6e1 | 484 | } |
f3099462 EA |
485 | bo = to_vc4_bo(&cma_obj->base); |
486 | ||
b9f19259 BB |
487 | /* By default, BOs do not support the MADV ioctl. This will be enabled |
488 | * only on BOs that are exposed to userspace (V3D, V3D_SHADER and DUMB | |
489 | * BOs). | |
490 | */ | |
491 | bo->madv = __VC4_MADV_NOTSUPP; | |
492 | ||
f3099462 EA |
493 | mutex_lock(&vc4->bo_lock); |
494 | vc4_bo_set_label(&cma_obj->base, type); | |
495 | mutex_unlock(&vc4->bo_lock); | |
496 | ||
497 | return bo; | |
c8b75bca EA |
498 | } |
499 | ||
500 | int vc4_dumb_create(struct drm_file *file_priv, | |
501 | struct drm_device *dev, | |
502 | struct drm_mode_create_dumb *args) | |
503 | { | |
504 | int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); | |
505 | struct vc4_bo *bo = NULL; | |
506 | int ret; | |
507 | ||
508 | if (args->pitch < min_pitch) | |
509 | args->pitch = min_pitch; | |
510 | ||
511 | if (args->size < args->pitch * args->height) | |
512 | args->size = args->pitch * args->height; | |
513 | ||
f3099462 | 514 | bo = vc4_bo_create(dev, args->size, false, VC4_BO_TYPE_DUMB); |
2c68f1fc EA |
515 | if (IS_ERR(bo)) |
516 | return PTR_ERR(bo); | |
c8b75bca | 517 | |
b9f19259 BB |
518 | bo->madv = VC4_MADV_WILLNEED; |
519 | ||
c8b75bca | 520 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); |
1d5494e9 | 521 | drm_gem_object_put_unlocked(&bo->base.base); |
c8b75bca EA |
522 | |
523 | return ret; | |
524 | } | |
c826a6e1 | 525 | |
c826a6e1 EA |
526 | static void vc4_bo_cache_free_old(struct drm_device *dev) |
527 | { | |
528 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
529 | unsigned long expire_time = jiffies - msecs_to_jiffies(1000); | |
530 | ||
4e6b1e91 EA |
531 | lockdep_assert_held(&vc4->bo_lock); |
532 | ||
c826a6e1 EA |
533 | while (!list_empty(&vc4->bo_cache.time_list)) { |
534 | struct vc4_bo *bo = list_last_entry(&vc4->bo_cache.time_list, | |
535 | struct vc4_bo, unref_head); | |
536 | if (time_before(expire_time, bo->free_time)) { | |
537 | mod_timer(&vc4->bo_cache.time_timer, | |
538 | round_jiffies_up(jiffies + | |
539 | msecs_to_jiffies(1000))); | |
540 | return; | |
541 | } | |
542 | ||
543 | vc4_bo_remove_from_cache(bo); | |
544 | vc4_bo_destroy(bo); | |
545 | } | |
546 | } | |
547 | ||
548 | /* Called on the last userspace/kernel unreference of the BO. Returns | |
549 | * it to the BO cache if possible, otherwise frees it. | |
c826a6e1 EA |
550 | */ |
551 | void vc4_free_object(struct drm_gem_object *gem_bo) | |
552 | { | |
553 | struct drm_device *dev = gem_bo->dev; | |
554 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
555 | struct vc4_bo *bo = to_vc4_bo(gem_bo); | |
556 | struct list_head *cache_list; | |
557 | ||
b9f19259 BB |
558 | /* Remove the BO from the purgeable list. */ |
559 | mutex_lock(&bo->madv_lock); | |
560 | if (bo->madv == VC4_MADV_DONTNEED && !refcount_read(&bo->usecnt)) | |
561 | vc4_bo_remove_from_purgeable_pool(bo); | |
562 | mutex_unlock(&bo->madv_lock); | |
563 | ||
c826a6e1 EA |
564 | mutex_lock(&vc4->bo_lock); |
565 | /* If the object references someone else's memory, we can't cache it. | |
566 | */ | |
567 | if (gem_bo->import_attach) { | |
568 | vc4_bo_destroy(bo); | |
569 | goto out; | |
570 | } | |
571 | ||
572 | /* Don't cache if it was publicly named. */ | |
573 | if (gem_bo->name) { | |
574 | vc4_bo_destroy(bo); | |
575 | goto out; | |
576 | } | |
577 | ||
ca39b449 | 578 | /* If this object was partially constructed but CMA allocation |
b9f19259 BB |
579 | * had failed, just free it. Can also happen when the BO has been |
580 | * purged. | |
ca39b449 EA |
581 | */ |
582 | if (!bo->base.vaddr) { | |
583 | vc4_bo_destroy(bo); | |
584 | goto out; | |
585 | } | |
586 | ||
c826a6e1 EA |
587 | cache_list = vc4_get_cache_list_for_size(dev, gem_bo->size); |
588 | if (!cache_list) { | |
589 | vc4_bo_destroy(bo); | |
590 | goto out; | |
591 | } | |
592 | ||
463873d5 EA |
593 | if (bo->validated_shader) { |
594 | kfree(bo->validated_shader->texture_samples); | |
595 | kfree(bo->validated_shader); | |
596 | bo->validated_shader = NULL; | |
597 | } | |
598 | ||
b9f19259 BB |
599 | /* Reset madv and usecnt before adding the BO to the cache. */ |
600 | bo->madv = __VC4_MADV_NOTSUPP; | |
601 | refcount_set(&bo->usecnt, 0); | |
602 | ||
83753117 | 603 | bo->t_format = false; |
c826a6e1 EA |
604 | bo->free_time = jiffies; |
605 | list_add(&bo->size_head, cache_list); | |
606 | list_add(&bo->unref_head, &vc4->bo_cache.time_list); | |
607 | ||
f3099462 | 608 | vc4_bo_set_label(&bo->base.base, VC4_BO_TYPE_KERNEL_CACHE); |
c826a6e1 EA |
609 | |
610 | vc4_bo_cache_free_old(dev); | |
611 | ||
612 | out: | |
613 | mutex_unlock(&vc4->bo_lock); | |
614 | } | |
615 | ||
616 | static void vc4_bo_cache_time_work(struct work_struct *work) | |
617 | { | |
618 | struct vc4_dev *vc4 = | |
619 | container_of(work, struct vc4_dev, bo_cache.time_work); | |
620 | struct drm_device *dev = vc4->dev; | |
621 | ||
622 | mutex_lock(&vc4->bo_lock); | |
623 | vc4_bo_cache_free_old(dev); | |
624 | mutex_unlock(&vc4->bo_lock); | |
625 | } | |
626 | ||
b9f19259 BB |
627 | int vc4_bo_inc_usecnt(struct vc4_bo *bo) |
628 | { | |
629 | int ret; | |
630 | ||
631 | /* Fast path: if the BO is already retained by someone, no need to | |
632 | * check the madv status. | |
633 | */ | |
634 | if (refcount_inc_not_zero(&bo->usecnt)) | |
635 | return 0; | |
636 | ||
637 | mutex_lock(&bo->madv_lock); | |
638 | switch (bo->madv) { | |
639 | case VC4_MADV_WILLNEED: | |
5bfd4013 BB |
640 | if (!refcount_inc_not_zero(&bo->usecnt)) |
641 | refcount_set(&bo->usecnt, 1); | |
b9f19259 BB |
642 | ret = 0; |
643 | break; | |
644 | case VC4_MADV_DONTNEED: | |
645 | /* We shouldn't use a BO marked as purgeable if at least | |
646 | * someone else retained its content by incrementing usecnt. | |
647 | * Luckily the BO hasn't been purged yet, but something wrong | |
648 | * is happening here. Just throw an error instead of | |
649 | * authorizing this use case. | |
650 | */ | |
651 | case __VC4_MADV_PURGED: | |
652 | /* We can't use a purged BO. */ | |
653 | default: | |
654 | /* Invalid madv value. */ | |
655 | ret = -EINVAL; | |
656 | break; | |
657 | } | |
658 | mutex_unlock(&bo->madv_lock); | |
659 | ||
660 | return ret; | |
661 | } | |
662 | ||
663 | void vc4_bo_dec_usecnt(struct vc4_bo *bo) | |
664 | { | |
665 | /* Fast path: if the BO is still retained by someone, no need to test | |
666 | * the madv value. | |
667 | */ | |
668 | if (refcount_dec_not_one(&bo->usecnt)) | |
669 | return; | |
670 | ||
671 | mutex_lock(&bo->madv_lock); | |
672 | if (refcount_dec_and_test(&bo->usecnt) && | |
673 | bo->madv == VC4_MADV_DONTNEED) | |
674 | vc4_bo_add_to_purgeable_pool(bo); | |
675 | mutex_unlock(&bo->madv_lock); | |
676 | } | |
677 | ||
0078730f | 678 | static void vc4_bo_cache_time_timer(struct timer_list *t) |
c826a6e1 | 679 | { |
0078730f | 680 | struct vc4_dev *vc4 = from_timer(vc4, t, bo_cache.time_timer); |
c826a6e1 EA |
681 | |
682 | schedule_work(&vc4->bo_cache.time_work); | |
683 | } | |
684 | ||
cdec4d36 EA |
685 | struct reservation_object *vc4_prime_res_obj(struct drm_gem_object *obj) |
686 | { | |
687 | struct vc4_bo *bo = to_vc4_bo(obj); | |
688 | ||
689 | return bo->resv; | |
690 | } | |
691 | ||
463873d5 EA |
692 | struct dma_buf * |
693 | vc4_prime_export(struct drm_device *dev, struct drm_gem_object *obj, int flags) | |
694 | { | |
695 | struct vc4_bo *bo = to_vc4_bo(obj); | |
b9f19259 BB |
696 | struct dma_buf *dmabuf; |
697 | int ret; | |
463873d5 EA |
698 | |
699 | if (bo->validated_shader) { | |
fb95992a | 700 | DRM_DEBUG("Attempting to export shader BO\n"); |
463873d5 EA |
701 | return ERR_PTR(-EINVAL); |
702 | } | |
703 | ||
b9f19259 BB |
704 | /* Note: as soon as the BO is exported it becomes unpurgeable, because |
705 | * noone ever decrements the usecnt even if the reference held by the | |
706 | * exported BO is released. This shouldn't be a problem since we don't | |
707 | * expect exported BOs to be marked as purgeable. | |
708 | */ | |
709 | ret = vc4_bo_inc_usecnt(bo); | |
710 | if (ret) { | |
711 | DRM_ERROR("Failed to increment BO usecnt\n"); | |
712 | return ERR_PTR(ret); | |
713 | } | |
714 | ||
715 | dmabuf = drm_gem_prime_export(dev, obj, flags); | |
716 | if (IS_ERR(dmabuf)) | |
717 | vc4_bo_dec_usecnt(bo); | |
718 | ||
719 | return dmabuf; | |
720 | } | |
721 | ||
722 | int vc4_fault(struct vm_fault *vmf) | |
723 | { | |
724 | struct vm_area_struct *vma = vmf->vma; | |
725 | struct drm_gem_object *obj = vma->vm_private_data; | |
726 | struct vc4_bo *bo = to_vc4_bo(obj); | |
727 | ||
728 | /* The only reason we would end up here is when user-space accesses | |
729 | * BO's memory after it's been purged. | |
730 | */ | |
731 | mutex_lock(&bo->madv_lock); | |
732 | WARN_ON(bo->madv != __VC4_MADV_PURGED); | |
733 | mutex_unlock(&bo->madv_lock); | |
734 | ||
735 | return VM_FAULT_SIGBUS; | |
463873d5 EA |
736 | } |
737 | ||
738 | int vc4_mmap(struct file *filp, struct vm_area_struct *vma) | |
739 | { | |
740 | struct drm_gem_object *gem_obj; | |
b9f19259 | 741 | unsigned long vm_pgoff; |
463873d5 EA |
742 | struct vc4_bo *bo; |
743 | int ret; | |
744 | ||
745 | ret = drm_gem_mmap(filp, vma); | |
746 | if (ret) | |
747 | return ret; | |
748 | ||
749 | gem_obj = vma->vm_private_data; | |
750 | bo = to_vc4_bo(gem_obj); | |
751 | ||
752 | if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) { | |
fb95992a | 753 | DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n"); |
463873d5 EA |
754 | return -EINVAL; |
755 | } | |
756 | ||
b9f19259 BB |
757 | if (bo->madv != VC4_MADV_WILLNEED) { |
758 | DRM_DEBUG("mmaping of %s BO not allowed\n", | |
759 | bo->madv == VC4_MADV_DONTNEED ? | |
760 | "purgeable" : "purged"); | |
761 | return -EINVAL; | |
762 | } | |
763 | ||
463873d5 EA |
764 | /* |
765 | * Clear the VM_PFNMAP flag that was set by drm_gem_mmap(), and set the | |
766 | * vm_pgoff (used as a fake buffer offset by DRM) to 0 as we want to map | |
767 | * the whole buffer. | |
768 | */ | |
769 | vma->vm_flags &= ~VM_PFNMAP; | |
463873d5 | 770 | |
b9f19259 BB |
771 | /* This ->vm_pgoff dance is needed to make all parties happy: |
772 | * - dma_mmap_wc() uses ->vm_pgoff as an offset within the allocated | |
773 | * mem-region, hence the need to set it to zero (the value set by | |
774 | * the DRM core is a virtual offset encoding the GEM object-id) | |
775 | * - the mmap() core logic needs ->vm_pgoff to be restored to its | |
776 | * initial value before returning from this function because it | |
777 | * encodes the offset of this GEM in the dev->anon_inode pseudo-file | |
778 | * and this information will be used when we invalidate userspace | |
779 | * mappings with drm_vma_node_unmap() (called from vc4_gem_purge()). | |
780 | */ | |
781 | vm_pgoff = vma->vm_pgoff; | |
782 | vma->vm_pgoff = 0; | |
f6e45661 LR |
783 | ret = dma_mmap_wc(bo->base.base.dev->dev, vma, bo->base.vaddr, |
784 | bo->base.paddr, vma->vm_end - vma->vm_start); | |
b9f19259 BB |
785 | vma->vm_pgoff = vm_pgoff; |
786 | ||
463873d5 EA |
787 | if (ret) |
788 | drm_gem_vm_close(vma); | |
789 | ||
790 | return ret; | |
791 | } | |
792 | ||
793 | int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) | |
794 | { | |
795 | struct vc4_bo *bo = to_vc4_bo(obj); | |
796 | ||
797 | if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) { | |
fb95992a | 798 | DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n"); |
463873d5 EA |
799 | return -EINVAL; |
800 | } | |
801 | ||
802 | return drm_gem_cma_prime_mmap(obj, vma); | |
803 | } | |
804 | ||
805 | void *vc4_prime_vmap(struct drm_gem_object *obj) | |
806 | { | |
807 | struct vc4_bo *bo = to_vc4_bo(obj); | |
808 | ||
809 | if (bo->validated_shader) { | |
fb95992a | 810 | DRM_DEBUG("mmaping of shader BOs not allowed.\n"); |
463873d5 EA |
811 | return ERR_PTR(-EINVAL); |
812 | } | |
813 | ||
814 | return drm_gem_cma_prime_vmap(obj); | |
815 | } | |
816 | ||
cdec4d36 EA |
817 | struct drm_gem_object * |
818 | vc4_prime_import_sg_table(struct drm_device *dev, | |
819 | struct dma_buf_attachment *attach, | |
820 | struct sg_table *sgt) | |
821 | { | |
822 | struct drm_gem_object *obj; | |
823 | struct vc4_bo *bo; | |
824 | ||
825 | obj = drm_gem_cma_prime_import_sg_table(dev, attach, sgt); | |
826 | if (IS_ERR(obj)) | |
827 | return obj; | |
828 | ||
829 | bo = to_vc4_bo(obj); | |
830 | bo->resv = attach->dmabuf->resv; | |
831 | ||
832 | return obj; | |
833 | } | |
834 | ||
d5bc60f6 EA |
835 | int vc4_create_bo_ioctl(struct drm_device *dev, void *data, |
836 | struct drm_file *file_priv) | |
837 | { | |
838 | struct drm_vc4_create_bo *args = data; | |
839 | struct vc4_bo *bo = NULL; | |
840 | int ret; | |
841 | ||
842 | /* | |
843 | * We can't allocate from the BO cache, because the BOs don't | |
844 | * get zeroed, and that might leak data between users. | |
845 | */ | |
f3099462 | 846 | bo = vc4_bo_create(dev, args->size, false, VC4_BO_TYPE_V3D); |
2c68f1fc EA |
847 | if (IS_ERR(bo)) |
848 | return PTR_ERR(bo); | |
d5bc60f6 | 849 | |
b9f19259 BB |
850 | bo->madv = VC4_MADV_WILLNEED; |
851 | ||
d5bc60f6 | 852 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); |
1d5494e9 | 853 | drm_gem_object_put_unlocked(&bo->base.base); |
d5bc60f6 EA |
854 | |
855 | return ret; | |
856 | } | |
857 | ||
858 | int vc4_mmap_bo_ioctl(struct drm_device *dev, void *data, | |
859 | struct drm_file *file_priv) | |
860 | { | |
861 | struct drm_vc4_mmap_bo *args = data; | |
862 | struct drm_gem_object *gem_obj; | |
863 | ||
a8ad0bd8 | 864 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); |
d5bc60f6 | 865 | if (!gem_obj) { |
fb95992a | 866 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
d5bc60f6 EA |
867 | return -EINVAL; |
868 | } | |
869 | ||
870 | /* The mmap offset was set up at BO allocation time. */ | |
871 | args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node); | |
872 | ||
1d5494e9 | 873 | drm_gem_object_put_unlocked(gem_obj); |
d5bc60f6 EA |
874 | return 0; |
875 | } | |
876 | ||
463873d5 EA |
877 | int |
878 | vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, | |
879 | struct drm_file *file_priv) | |
880 | { | |
881 | struct drm_vc4_create_shader_bo *args = data; | |
882 | struct vc4_bo *bo = NULL; | |
883 | int ret; | |
884 | ||
885 | if (args->size == 0) | |
886 | return -EINVAL; | |
887 | ||
888 | if (args->size % sizeof(u64) != 0) | |
889 | return -EINVAL; | |
890 | ||
891 | if (args->flags != 0) { | |
892 | DRM_INFO("Unknown flags set: 0x%08x\n", args->flags); | |
893 | return -EINVAL; | |
894 | } | |
895 | ||
896 | if (args->pad != 0) { | |
897 | DRM_INFO("Pad set: 0x%08x\n", args->pad); | |
898 | return -EINVAL; | |
899 | } | |
900 | ||
f3099462 | 901 | bo = vc4_bo_create(dev, args->size, true, VC4_BO_TYPE_V3D_SHADER); |
2c68f1fc EA |
902 | if (IS_ERR(bo)) |
903 | return PTR_ERR(bo); | |
463873d5 | 904 | |
b9f19259 BB |
905 | bo->madv = VC4_MADV_WILLNEED; |
906 | ||
585cb132 | 907 | if (copy_from_user(bo->base.vaddr, |
463873d5 | 908 | (void __user *)(uintptr_t)args->data, |
585cb132 DC |
909 | args->size)) { |
910 | ret = -EFAULT; | |
463873d5 | 911 | goto fail; |
585cb132 | 912 | } |
463873d5 EA |
913 | /* Clear the rest of the memory from allocating from the BO |
914 | * cache. | |
915 | */ | |
916 | memset(bo->base.vaddr + args->size, 0, | |
917 | bo->base.base.size - args->size); | |
918 | ||
919 | bo->validated_shader = vc4_validate_shader(&bo->base); | |
920 | if (!bo->validated_shader) { | |
921 | ret = -EINVAL; | |
922 | goto fail; | |
923 | } | |
924 | ||
925 | /* We have to create the handle after validation, to avoid | |
926 | * races for users to do doing things like mmap the shader BO. | |
927 | */ | |
928 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); | |
929 | ||
930 | fail: | |
1d5494e9 | 931 | drm_gem_object_put_unlocked(&bo->base.base); |
463873d5 EA |
932 | |
933 | return ret; | |
934 | } | |
935 | ||
83753117 EA |
936 | /** |
937 | * vc4_set_tiling_ioctl() - Sets the tiling modifier for a BO. | |
938 | * @dev: DRM device | |
939 | * @data: ioctl argument | |
940 | * @file_priv: DRM file for this fd | |
941 | * | |
942 | * The tiling state of the BO decides the default modifier of an fb if | |
943 | * no specific modifier was set by userspace, and the return value of | |
944 | * vc4_get_tiling_ioctl() (so that userspace can treat a BO it | |
945 | * received from dmabuf as the same tiling format as the producer | |
946 | * used). | |
947 | */ | |
948 | int vc4_set_tiling_ioctl(struct drm_device *dev, void *data, | |
949 | struct drm_file *file_priv) | |
950 | { | |
951 | struct drm_vc4_set_tiling *args = data; | |
952 | struct drm_gem_object *gem_obj; | |
953 | struct vc4_bo *bo; | |
954 | bool t_format; | |
955 | ||
956 | if (args->flags != 0) | |
957 | return -EINVAL; | |
958 | ||
959 | switch (args->modifier) { | |
960 | case DRM_FORMAT_MOD_NONE: | |
961 | t_format = false; | |
962 | break; | |
963 | case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: | |
964 | t_format = true; | |
965 | break; | |
966 | default: | |
967 | return -EINVAL; | |
968 | } | |
969 | ||
970 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
971 | if (!gem_obj) { | |
fb95992a | 972 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
83753117 EA |
973 | return -ENOENT; |
974 | } | |
975 | bo = to_vc4_bo(gem_obj); | |
976 | bo->t_format = t_format; | |
977 | ||
1d5494e9 | 978 | drm_gem_object_put_unlocked(gem_obj); |
83753117 EA |
979 | |
980 | return 0; | |
981 | } | |
982 | ||
983 | /** | |
984 | * vc4_get_tiling_ioctl() - Gets the tiling modifier for a BO. | |
985 | * @dev: DRM device | |
986 | * @data: ioctl argument | |
987 | * @file_priv: DRM file for this fd | |
988 | * | |
989 | * Returns the tiling modifier for a BO as set by vc4_set_tiling_ioctl(). | |
990 | */ | |
991 | int vc4_get_tiling_ioctl(struct drm_device *dev, void *data, | |
992 | struct drm_file *file_priv) | |
993 | { | |
994 | struct drm_vc4_get_tiling *args = data; | |
995 | struct drm_gem_object *gem_obj; | |
996 | struct vc4_bo *bo; | |
997 | ||
998 | if (args->flags != 0 || args->modifier != 0) | |
999 | return -EINVAL; | |
1000 | ||
1001 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
1002 | if (!gem_obj) { | |
fb95992a | 1003 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
83753117 EA |
1004 | return -ENOENT; |
1005 | } | |
1006 | bo = to_vc4_bo(gem_obj); | |
1007 | ||
1008 | if (bo->t_format) | |
1009 | args->modifier = DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED; | |
1010 | else | |
1011 | args->modifier = DRM_FORMAT_MOD_NONE; | |
1012 | ||
1d5494e9 | 1013 | drm_gem_object_put_unlocked(gem_obj); |
83753117 EA |
1014 | |
1015 | return 0; | |
1016 | } | |
1017 | ||
f3099462 | 1018 | int vc4_bo_cache_init(struct drm_device *dev) |
c826a6e1 EA |
1019 | { |
1020 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
f3099462 EA |
1021 | int i; |
1022 | ||
1023 | /* Create the initial set of BO labels that the kernel will | |
1024 | * use. This lets us avoid a bunch of string reallocation in | |
1025 | * the kernel's draw and BO allocation paths. | |
1026 | */ | |
1027 | vc4->bo_labels = kcalloc(VC4_BO_TYPE_COUNT, sizeof(*vc4->bo_labels), | |
1028 | GFP_KERNEL); | |
1029 | if (!vc4->bo_labels) | |
1030 | return -ENOMEM; | |
1031 | vc4->num_labels = VC4_BO_TYPE_COUNT; | |
1032 | ||
1033 | BUILD_BUG_ON(ARRAY_SIZE(bo_type_names) != VC4_BO_TYPE_COUNT); | |
1034 | for (i = 0; i < VC4_BO_TYPE_COUNT; i++) | |
1035 | vc4->bo_labels[i].name = bo_type_names[i]; | |
c826a6e1 EA |
1036 | |
1037 | mutex_init(&vc4->bo_lock); | |
1038 | ||
1039 | INIT_LIST_HEAD(&vc4->bo_cache.time_list); | |
1040 | ||
1041 | INIT_WORK(&vc4->bo_cache.time_work, vc4_bo_cache_time_work); | |
0078730f | 1042 | timer_setup(&vc4->bo_cache.time_timer, vc4_bo_cache_time_timer, 0); |
f3099462 EA |
1043 | |
1044 | return 0; | |
c826a6e1 EA |
1045 | } |
1046 | ||
1047 | void vc4_bo_cache_destroy(struct drm_device *dev) | |
1048 | { | |
1049 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
f3099462 | 1050 | int i; |
c826a6e1 EA |
1051 | |
1052 | del_timer(&vc4->bo_cache.time_timer); | |
1053 | cancel_work_sync(&vc4->bo_cache.time_work); | |
1054 | ||
1055 | vc4_bo_cache_purge(dev); | |
1056 | ||
f3099462 EA |
1057 | for (i = 0; i < vc4->num_labels; i++) { |
1058 | if (vc4->bo_labels[i].num_allocated) { | |
1059 | DRM_ERROR("Destroying BO cache with %d %s " | |
1060 | "BOs still allocated\n", | |
1061 | vc4->bo_labels[i].num_allocated, | |
1062 | vc4->bo_labels[i].name); | |
1063 | } | |
1064 | ||
1065 | if (is_user_label(i)) | |
1066 | kfree(vc4->bo_labels[i].name); | |
c826a6e1 | 1067 | } |
f3099462 EA |
1068 | kfree(vc4->bo_labels); |
1069 | } | |
1070 | ||
1071 | int vc4_label_bo_ioctl(struct drm_device *dev, void *data, | |
1072 | struct drm_file *file_priv) | |
1073 | { | |
1074 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
1075 | struct drm_vc4_label_bo *args = data; | |
1076 | char *name; | |
1077 | struct drm_gem_object *gem_obj; | |
1078 | int ret = 0, label; | |
1079 | ||
1080 | if (!args->len) | |
1081 | return -EINVAL; | |
1082 | ||
1083 | name = strndup_user(u64_to_user_ptr(args->name), args->len + 1); | |
1084 | if (IS_ERR(name)) | |
1085 | return PTR_ERR(name); | |
1086 | ||
1087 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
1088 | if (!gem_obj) { | |
1089 | DRM_ERROR("Failed to look up GEM BO %d\n", args->handle); | |
1090 | kfree(name); | |
1091 | return -ENOENT; | |
1092 | } | |
1093 | ||
1094 | mutex_lock(&vc4->bo_lock); | |
1095 | label = vc4_get_user_label(vc4, name); | |
1096 | if (label != -1) | |
1097 | vc4_bo_set_label(gem_obj, label); | |
1098 | else | |
1099 | ret = -ENOMEM; | |
1100 | mutex_unlock(&vc4->bo_lock); | |
1101 | ||
b9c55b6e | 1102 | drm_gem_object_put_unlocked(gem_obj); |
f3099462 EA |
1103 | |
1104 | return ret; | |
c826a6e1 | 1105 | } |