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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
c8b75bca EA |
2 | /* |
3 | * Copyright © 2015 Broadcom | |
c8b75bca EA |
4 | */ |
5 | ||
72f793f1 EA |
6 | /** |
7 | * DOC: VC4 GEM BO management support | |
c8b75bca EA |
8 | * |
9 | * The VC4 GPU architecture (both scanout and rendering) has direct | |
10 | * access to system memory with no MMU in between. To support it, we | |
11 | * use the GEM CMA helper functions to allocate contiguous ranges of | |
12 | * physical memory for our BOs. | |
c826a6e1 EA |
13 | * |
14 | * Since the CMA allocator is very slow, we keep a cache of recently | |
15 | * freed BOs around so that the kernel's allocation of objects for 3D | |
16 | * rendering can return quickly. | |
c8b75bca EA |
17 | */ |
18 | ||
cdec4d36 EA |
19 | #include <linux/dma-buf.h> |
20 | ||
c8b75bca | 21 | #include "vc4_drv.h" |
d5bc60f6 | 22 | #include "uapi/drm/vc4_drm.h" |
c8b75bca | 23 | |
dd602022 TZ |
24 | static vm_fault_t vc4_fault(struct vm_fault *vmf); |
25 | ||
f3099462 EA |
26 | static const char * const bo_type_names[] = { |
27 | "kernel", | |
28 | "V3D", | |
29 | "V3D shader", | |
30 | "dumb", | |
31 | "binner", | |
32 | "RCL", | |
33 | "BCL", | |
34 | "kernel BO cache", | |
35 | }; | |
36 | ||
37 | static bool is_user_label(int label) | |
38 | { | |
39 | return label >= VC4_BO_TYPE_COUNT; | |
40 | } | |
41 | ||
13f0ec34 | 42 | static void vc4_bo_stats_print(struct drm_printer *p, struct vc4_dev *vc4) |
c826a6e1 | 43 | { |
f3099462 EA |
44 | int i; |
45 | ||
46 | for (i = 0; i < vc4->num_labels; i++) { | |
47 | if (!vc4->bo_labels[i].num_allocated) | |
48 | continue; | |
49 | ||
13f0ec34 EA |
50 | drm_printf(p, "%30s: %6dkb BOs (%d)\n", |
51 | vc4->bo_labels[i].name, | |
52 | vc4->bo_labels[i].size_allocated / 1024, | |
53 | vc4->bo_labels[i].num_allocated); | |
f3099462 | 54 | } |
b9f19259 BB |
55 | |
56 | mutex_lock(&vc4->purgeable.lock); | |
57 | if (vc4->purgeable.num) | |
13f0ec34 EA |
58 | drm_printf(p, "%30s: %6zdkb BOs (%d)\n", "userspace BO cache", |
59 | vc4->purgeable.size / 1024, vc4->purgeable.num); | |
b9f19259 BB |
60 | |
61 | if (vc4->purgeable.purged_num) | |
13f0ec34 EA |
62 | drm_printf(p, "%30s: %6zdkb BOs (%d)\n", "total purged BO", |
63 | vc4->purgeable.purged_size / 1024, | |
64 | vc4->purgeable.purged_num); | |
b9f19259 | 65 | mutex_unlock(&vc4->purgeable.lock); |
c826a6e1 EA |
66 | } |
67 | ||
c9be804c | 68 | static int vc4_bo_stats_debugfs(struct seq_file *m, void *unused) |
c826a6e1 EA |
69 | { |
70 | struct drm_info_node *node = (struct drm_info_node *)m->private; | |
71 | struct drm_device *dev = node->minor->dev; | |
72 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
13f0ec34 | 73 | struct drm_printer p = drm_seq_file_printer(m); |
c826a6e1 | 74 | |
13f0ec34 | 75 | vc4_bo_stats_print(&p, vc4); |
b9f19259 | 76 | |
c826a6e1 EA |
77 | return 0; |
78 | } | |
c826a6e1 | 79 | |
f3099462 EA |
80 | /* Takes ownership of *name and returns the appropriate slot for it in |
81 | * the bo_labels[] array, extending it as necessary. | |
82 | * | |
83 | * This is inefficient and could use a hash table instead of walking | |
84 | * an array and strcmp()ing. However, the assumption is that user | |
85 | * labeling will be infrequent (scanout buffers and other long-lived | |
86 | * objects, or debug driver builds), so we can live with it for now. | |
87 | */ | |
88 | static int vc4_get_user_label(struct vc4_dev *vc4, const char *name) | |
89 | { | |
90 | int i; | |
91 | int free_slot = -1; | |
92 | ||
93 | for (i = 0; i < vc4->num_labels; i++) { | |
94 | if (!vc4->bo_labels[i].name) { | |
95 | free_slot = i; | |
96 | } else if (strcmp(vc4->bo_labels[i].name, name) == 0) { | |
97 | kfree(name); | |
98 | return i; | |
99 | } | |
100 | } | |
101 | ||
102 | if (free_slot != -1) { | |
103 | WARN_ON(vc4->bo_labels[free_slot].num_allocated != 0); | |
104 | vc4->bo_labels[free_slot].name = name; | |
105 | return free_slot; | |
106 | } else { | |
107 | u32 new_label_count = vc4->num_labels + 1; | |
108 | struct vc4_label *new_labels = | |
109 | krealloc(vc4->bo_labels, | |
110 | new_label_count * sizeof(*new_labels), | |
111 | GFP_KERNEL); | |
112 | ||
113 | if (!new_labels) { | |
114 | kfree(name); | |
115 | return -1; | |
116 | } | |
117 | ||
118 | free_slot = vc4->num_labels; | |
119 | vc4->bo_labels = new_labels; | |
120 | vc4->num_labels = new_label_count; | |
121 | ||
122 | vc4->bo_labels[free_slot].name = name; | |
123 | vc4->bo_labels[free_slot].num_allocated = 0; | |
124 | vc4->bo_labels[free_slot].size_allocated = 0; | |
125 | ||
126 | return free_slot; | |
127 | } | |
128 | } | |
129 | ||
130 | static void vc4_bo_set_label(struct drm_gem_object *gem_obj, int label) | |
131 | { | |
132 | struct vc4_bo *bo = to_vc4_bo(gem_obj); | |
133 | struct vc4_dev *vc4 = to_vc4_dev(gem_obj->dev); | |
134 | ||
135 | lockdep_assert_held(&vc4->bo_lock); | |
136 | ||
137 | if (label != -1) { | |
138 | vc4->bo_labels[label].num_allocated++; | |
139 | vc4->bo_labels[label].size_allocated += gem_obj->size; | |
140 | } | |
141 | ||
142 | vc4->bo_labels[bo->label].num_allocated--; | |
143 | vc4->bo_labels[bo->label].size_allocated -= gem_obj->size; | |
144 | ||
145 | if (vc4->bo_labels[bo->label].num_allocated == 0 && | |
146 | is_user_label(bo->label)) { | |
147 | /* Free user BO label slots on last unreference. | |
148 | * Slots are just where we track the stats for a given | |
149 | * name, and once a name is unused we can reuse that | |
150 | * slot. | |
151 | */ | |
152 | kfree(vc4->bo_labels[bo->label].name); | |
153 | vc4->bo_labels[bo->label].name = NULL; | |
154 | } | |
155 | ||
156 | bo->label = label; | |
157 | } | |
158 | ||
c826a6e1 EA |
159 | static uint32_t bo_page_index(size_t size) |
160 | { | |
161 | return (size / PAGE_SIZE) - 1; | |
162 | } | |
163 | ||
c826a6e1 | 164 | static void vc4_bo_destroy(struct vc4_bo *bo) |
c8b75bca | 165 | { |
c826a6e1 | 166 | struct drm_gem_object *obj = &bo->base.base; |
4e6b1e91 EA |
167 | struct vc4_dev *vc4 = to_vc4_dev(obj->dev); |
168 | ||
169 | lockdep_assert_held(&vc4->bo_lock); | |
f3099462 EA |
170 | |
171 | vc4_bo_set_label(obj, -1); | |
c826a6e1 | 172 | |
463873d5 | 173 | if (bo->validated_shader) { |
c0db1b67 | 174 | kfree(bo->validated_shader->uniform_addr_offsets); |
463873d5 EA |
175 | kfree(bo->validated_shader->texture_samples); |
176 | kfree(bo->validated_shader); | |
177 | bo->validated_shader = NULL; | |
178 | } | |
179 | ||
c826a6e1 EA |
180 | drm_gem_cma_free_object(obj); |
181 | } | |
182 | ||
c826a6e1 EA |
183 | static void vc4_bo_remove_from_cache(struct vc4_bo *bo) |
184 | { | |
4e6b1e91 EA |
185 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); |
186 | ||
187 | lockdep_assert_held(&vc4->bo_lock); | |
c826a6e1 EA |
188 | list_del(&bo->unref_head); |
189 | list_del(&bo->size_head); | |
190 | } | |
191 | ||
192 | static struct list_head *vc4_get_cache_list_for_size(struct drm_device *dev, | |
193 | size_t size) | |
194 | { | |
195 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
196 | uint32_t page_index = bo_page_index(size); | |
197 | ||
198 | if (vc4->bo_cache.size_list_size <= page_index) { | |
199 | uint32_t new_size = max(vc4->bo_cache.size_list_size * 2, | |
200 | page_index + 1); | |
201 | struct list_head *new_list; | |
202 | uint32_t i; | |
203 | ||
204 | new_list = kmalloc_array(new_size, sizeof(struct list_head), | |
205 | GFP_KERNEL); | |
206 | if (!new_list) | |
207 | return NULL; | |
208 | ||
209 | /* Rebase the old cached BO lists to their new list | |
210 | * head locations. | |
211 | */ | |
212 | for (i = 0; i < vc4->bo_cache.size_list_size; i++) { | |
213 | struct list_head *old_list = | |
214 | &vc4->bo_cache.size_list[i]; | |
215 | ||
216 | if (list_empty(old_list)) | |
217 | INIT_LIST_HEAD(&new_list[i]); | |
218 | else | |
219 | list_replace(old_list, &new_list[i]); | |
220 | } | |
221 | /* And initialize the brand new BO list heads. */ | |
222 | for (i = vc4->bo_cache.size_list_size; i < new_size; i++) | |
223 | INIT_LIST_HEAD(&new_list[i]); | |
224 | ||
225 | kfree(vc4->bo_cache.size_list); | |
226 | vc4->bo_cache.size_list = new_list; | |
227 | vc4->bo_cache.size_list_size = new_size; | |
228 | } | |
229 | ||
230 | return &vc4->bo_cache.size_list[page_index]; | |
231 | } | |
232 | ||
ea903838 | 233 | static void vc4_bo_cache_purge(struct drm_device *dev) |
c826a6e1 EA |
234 | { |
235 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
236 | ||
237 | mutex_lock(&vc4->bo_lock); | |
238 | while (!list_empty(&vc4->bo_cache.time_list)) { | |
239 | struct vc4_bo *bo = list_last_entry(&vc4->bo_cache.time_list, | |
240 | struct vc4_bo, unref_head); | |
241 | vc4_bo_remove_from_cache(bo); | |
242 | vc4_bo_destroy(bo); | |
243 | } | |
244 | mutex_unlock(&vc4->bo_lock); | |
245 | } | |
246 | ||
b9f19259 BB |
247 | void vc4_bo_add_to_purgeable_pool(struct vc4_bo *bo) |
248 | { | |
249 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
250 | ||
251 | mutex_lock(&vc4->purgeable.lock); | |
252 | list_add_tail(&bo->size_head, &vc4->purgeable.list); | |
253 | vc4->purgeable.num++; | |
254 | vc4->purgeable.size += bo->base.base.size; | |
255 | mutex_unlock(&vc4->purgeable.lock); | |
256 | } | |
257 | ||
258 | static void vc4_bo_remove_from_purgeable_pool_locked(struct vc4_bo *bo) | |
259 | { | |
260 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
261 | ||
262 | /* list_del_init() is used here because the caller might release | |
263 | * the purgeable lock in order to acquire the madv one and update the | |
264 | * madv status. | |
265 | * During this short period of time a user might decide to mark | |
266 | * the BO as unpurgeable, and if bo->madv is set to | |
267 | * VC4_MADV_DONTNEED it will try to remove the BO from the | |
268 | * purgeable list which will fail if the ->next/prev fields | |
269 | * are set to LIST_POISON1/LIST_POISON2 (which is what | |
270 | * list_del() does). | |
271 | * Re-initializing the list element guarantees that list_del() | |
272 | * will work correctly even if it's a NOP. | |
273 | */ | |
274 | list_del_init(&bo->size_head); | |
275 | vc4->purgeable.num--; | |
276 | vc4->purgeable.size -= bo->base.base.size; | |
277 | } | |
278 | ||
279 | void vc4_bo_remove_from_purgeable_pool(struct vc4_bo *bo) | |
280 | { | |
281 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
282 | ||
283 | mutex_lock(&vc4->purgeable.lock); | |
284 | vc4_bo_remove_from_purgeable_pool_locked(bo); | |
285 | mutex_unlock(&vc4->purgeable.lock); | |
286 | } | |
287 | ||
288 | static void vc4_bo_purge(struct drm_gem_object *obj) | |
289 | { | |
290 | struct vc4_bo *bo = to_vc4_bo(obj); | |
291 | struct drm_device *dev = obj->dev; | |
292 | ||
293 | WARN_ON(!mutex_is_locked(&bo->madv_lock)); | |
294 | WARN_ON(bo->madv != VC4_MADV_DONTNEED); | |
295 | ||
296 | drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); | |
297 | ||
298 | dma_free_wc(dev->dev, obj->size, bo->base.vaddr, bo->base.paddr); | |
299 | bo->base.vaddr = NULL; | |
300 | bo->madv = __VC4_MADV_PURGED; | |
301 | } | |
302 | ||
303 | static void vc4_bo_userspace_cache_purge(struct drm_device *dev) | |
304 | { | |
305 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
306 | ||
307 | mutex_lock(&vc4->purgeable.lock); | |
308 | while (!list_empty(&vc4->purgeable.list)) { | |
309 | struct vc4_bo *bo = list_first_entry(&vc4->purgeable.list, | |
310 | struct vc4_bo, size_head); | |
311 | struct drm_gem_object *obj = &bo->base.base; | |
312 | size_t purged_size = 0; | |
313 | ||
314 | vc4_bo_remove_from_purgeable_pool_locked(bo); | |
315 | ||
316 | /* Release the purgeable lock while we're purging the BO so | |
317 | * that other people can continue inserting things in the | |
318 | * purgeable pool without having to wait for all BOs to be | |
319 | * purged. | |
320 | */ | |
321 | mutex_unlock(&vc4->purgeable.lock); | |
322 | mutex_lock(&bo->madv_lock); | |
323 | ||
324 | /* Since we released the purgeable pool lock before acquiring | |
325 | * the BO madv one, the user may have marked the BO as WILLNEED | |
326 | * and re-used it in the meantime. | |
327 | * Before purging the BO we need to make sure | |
328 | * - it is still marked as DONTNEED | |
329 | * - it has not been re-inserted in the purgeable list | |
330 | * - it is not used by HW blocks | |
331 | * If one of these conditions is not met, just skip the entry. | |
332 | */ | |
333 | if (bo->madv == VC4_MADV_DONTNEED && | |
334 | list_empty(&bo->size_head) && | |
335 | !refcount_read(&bo->usecnt)) { | |
336 | purged_size = bo->base.base.size; | |
337 | vc4_bo_purge(obj); | |
338 | } | |
339 | mutex_unlock(&bo->madv_lock); | |
340 | mutex_lock(&vc4->purgeable.lock); | |
341 | ||
342 | if (purged_size) { | |
343 | vc4->purgeable.purged_size += purged_size; | |
344 | vc4->purgeable.purged_num++; | |
345 | } | |
346 | } | |
347 | mutex_unlock(&vc4->purgeable.lock); | |
348 | } | |
349 | ||
c826a6e1 | 350 | static struct vc4_bo *vc4_bo_get_from_cache(struct drm_device *dev, |
f3099462 EA |
351 | uint32_t size, |
352 | enum vc4_kernel_bo_type type) | |
c826a6e1 EA |
353 | { |
354 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
355 | uint32_t page_index = bo_page_index(size); | |
356 | struct vc4_bo *bo = NULL; | |
357 | ||
358 | size = roundup(size, PAGE_SIZE); | |
359 | ||
360 | mutex_lock(&vc4->bo_lock); | |
361 | if (page_index >= vc4->bo_cache.size_list_size) | |
362 | goto out; | |
363 | ||
364 | if (list_empty(&vc4->bo_cache.size_list[page_index])) | |
365 | goto out; | |
366 | ||
367 | bo = list_first_entry(&vc4->bo_cache.size_list[page_index], | |
368 | struct vc4_bo, size_head); | |
369 | vc4_bo_remove_from_cache(bo); | |
370 | kref_init(&bo->base.base.refcount); | |
371 | ||
372 | out: | |
f3099462 EA |
373 | if (bo) |
374 | vc4_bo_set_label(&bo->base.base, type); | |
c826a6e1 EA |
375 | mutex_unlock(&vc4->bo_lock); |
376 | return bo; | |
377 | } | |
378 | ||
dd602022 TZ |
379 | static const struct vm_operations_struct vc4_vm_ops = { |
380 | .fault = vc4_fault, | |
381 | .open = drm_gem_vm_open, | |
382 | .close = drm_gem_vm_close, | |
383 | }; | |
384 | ||
385 | static const struct drm_gem_object_funcs vc4_gem_object_funcs = { | |
386 | .free = vc4_free_object, | |
387 | .export = vc4_prime_export, | |
388 | .get_sg_table = drm_gem_cma_prime_get_sg_table, | |
389 | .vmap = vc4_prime_vmap, | |
dd602022 TZ |
390 | .vm_ops = &vc4_vm_ops, |
391 | }; | |
392 | ||
c826a6e1 | 393 | /** |
e9d2871f | 394 | * vc4_create_object - Implementation of driver->gem_create_object. |
72f793f1 EA |
395 | * @dev: DRM device |
396 | * @size: Size in bytes of the memory the object will reference | |
c826a6e1 EA |
397 | * |
398 | * This lets the CMA helpers allocate object structs for us, and keep | |
399 | * our BO stats correct. | |
400 | */ | |
401 | struct drm_gem_object *vc4_create_object(struct drm_device *dev, size_t size) | |
402 | { | |
403 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
404 | struct vc4_bo *bo; | |
405 | ||
406 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); | |
407 | if (!bo) | |
408 | return ERR_PTR(-ENOMEM); | |
409 | ||
b9f19259 BB |
410 | bo->madv = VC4_MADV_WILLNEED; |
411 | refcount_set(&bo->usecnt, 0); | |
412 | mutex_init(&bo->madv_lock); | |
c826a6e1 | 413 | mutex_lock(&vc4->bo_lock); |
f3099462 EA |
414 | bo->label = VC4_BO_TYPE_KERNEL; |
415 | vc4->bo_labels[VC4_BO_TYPE_KERNEL].num_allocated++; | |
416 | vc4->bo_labels[VC4_BO_TYPE_KERNEL].size_allocated += size; | |
c826a6e1 EA |
417 | mutex_unlock(&vc4->bo_lock); |
418 | ||
dd602022 TZ |
419 | bo->base.base.funcs = &vc4_gem_object_funcs; |
420 | ||
c826a6e1 EA |
421 | return &bo->base.base; |
422 | } | |
423 | ||
424 | struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t unaligned_size, | |
f3099462 | 425 | bool allow_unzeroed, enum vc4_kernel_bo_type type) |
c826a6e1 EA |
426 | { |
427 | size_t size = roundup(unaligned_size, PAGE_SIZE); | |
428 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
c8b75bca | 429 | struct drm_gem_cma_object *cma_obj; |
eb981383 | 430 | struct vc4_bo *bo; |
c8b75bca | 431 | |
c826a6e1 | 432 | if (size == 0) |
2c68f1fc | 433 | return ERR_PTR(-EINVAL); |
c826a6e1 EA |
434 | |
435 | /* First, try to get a vc4_bo from the kernel BO cache. */ | |
f3099462 | 436 | bo = vc4_bo_get_from_cache(dev, size, type); |
eb981383 EA |
437 | if (bo) { |
438 | if (!allow_unzeroed) | |
439 | memset(bo->base.vaddr, 0, bo->base.base.size); | |
440 | return bo; | |
c826a6e1 EA |
441 | } |
442 | ||
443 | cma_obj = drm_gem_cma_create(dev, size); | |
444 | if (IS_ERR(cma_obj)) { | |
445 | /* | |
446 | * If we've run out of CMA memory, kill the cache of | |
447 | * CMA allocations we've got laying around and try again. | |
448 | */ | |
449 | vc4_bo_cache_purge(dev); | |
b9f19259 BB |
450 | cma_obj = drm_gem_cma_create(dev, size); |
451 | } | |
c826a6e1 | 452 | |
b9f19259 BB |
453 | if (IS_ERR(cma_obj)) { |
454 | /* | |
455 | * Still not enough CMA memory, purge the userspace BO | |
456 | * cache and retry. | |
457 | * This is sub-optimal since we purge the whole userspace | |
458 | * BO cache which forces user that want to re-use the BO to | |
459 | * restore its initial content. | |
460 | * Ideally, we should purge entries one by one and retry | |
461 | * after each to see if CMA allocation succeeds. Or even | |
462 | * better, try to find an entry with at least the same | |
463 | * size. | |
464 | */ | |
465 | vc4_bo_userspace_cache_purge(dev); | |
c826a6e1 | 466 | cma_obj = drm_gem_cma_create(dev, size); |
b9f19259 BB |
467 | } |
468 | ||
469 | if (IS_ERR(cma_obj)) { | |
84d7d472 | 470 | struct drm_printer p = drm_info_printer(vc4->base.dev); |
b9f19259 | 471 | DRM_ERROR("Failed to allocate from CMA:\n"); |
13f0ec34 | 472 | vc4_bo_stats_print(&p, vc4); |
b9f19259 | 473 | return ERR_PTR(-ENOMEM); |
c826a6e1 | 474 | } |
f3099462 EA |
475 | bo = to_vc4_bo(&cma_obj->base); |
476 | ||
b9f19259 BB |
477 | /* By default, BOs do not support the MADV ioctl. This will be enabled |
478 | * only on BOs that are exposed to userspace (V3D, V3D_SHADER and DUMB | |
479 | * BOs). | |
480 | */ | |
481 | bo->madv = __VC4_MADV_NOTSUPP; | |
482 | ||
f3099462 EA |
483 | mutex_lock(&vc4->bo_lock); |
484 | vc4_bo_set_label(&cma_obj->base, type); | |
485 | mutex_unlock(&vc4->bo_lock); | |
486 | ||
487 | return bo; | |
c8b75bca EA |
488 | } |
489 | ||
490 | int vc4_dumb_create(struct drm_file *file_priv, | |
491 | struct drm_device *dev, | |
492 | struct drm_mode_create_dumb *args) | |
493 | { | |
494 | int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); | |
495 | struct vc4_bo *bo = NULL; | |
496 | int ret; | |
497 | ||
498 | if (args->pitch < min_pitch) | |
499 | args->pitch = min_pitch; | |
500 | ||
501 | if (args->size < args->pitch * args->height) | |
502 | args->size = args->pitch * args->height; | |
503 | ||
f3099462 | 504 | bo = vc4_bo_create(dev, args->size, false, VC4_BO_TYPE_DUMB); |
2c68f1fc EA |
505 | if (IS_ERR(bo)) |
506 | return PTR_ERR(bo); | |
c8b75bca | 507 | |
b9f19259 BB |
508 | bo->madv = VC4_MADV_WILLNEED; |
509 | ||
c8b75bca | 510 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); |
f7a8cd30 | 511 | drm_gem_object_put(&bo->base.base); |
c8b75bca EA |
512 | |
513 | return ret; | |
514 | } | |
c826a6e1 | 515 | |
c826a6e1 EA |
516 | static void vc4_bo_cache_free_old(struct drm_device *dev) |
517 | { | |
518 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
519 | unsigned long expire_time = jiffies - msecs_to_jiffies(1000); | |
520 | ||
4e6b1e91 EA |
521 | lockdep_assert_held(&vc4->bo_lock); |
522 | ||
c826a6e1 EA |
523 | while (!list_empty(&vc4->bo_cache.time_list)) { |
524 | struct vc4_bo *bo = list_last_entry(&vc4->bo_cache.time_list, | |
525 | struct vc4_bo, unref_head); | |
526 | if (time_before(expire_time, bo->free_time)) { | |
527 | mod_timer(&vc4->bo_cache.time_timer, | |
528 | round_jiffies_up(jiffies + | |
529 | msecs_to_jiffies(1000))); | |
530 | return; | |
531 | } | |
532 | ||
533 | vc4_bo_remove_from_cache(bo); | |
534 | vc4_bo_destroy(bo); | |
535 | } | |
536 | } | |
537 | ||
538 | /* Called on the last userspace/kernel unreference of the BO. Returns | |
539 | * it to the BO cache if possible, otherwise frees it. | |
c826a6e1 EA |
540 | */ |
541 | void vc4_free_object(struct drm_gem_object *gem_bo) | |
542 | { | |
543 | struct drm_device *dev = gem_bo->dev; | |
544 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
545 | struct vc4_bo *bo = to_vc4_bo(gem_bo); | |
546 | struct list_head *cache_list; | |
547 | ||
b9f19259 BB |
548 | /* Remove the BO from the purgeable list. */ |
549 | mutex_lock(&bo->madv_lock); | |
550 | if (bo->madv == VC4_MADV_DONTNEED && !refcount_read(&bo->usecnt)) | |
551 | vc4_bo_remove_from_purgeable_pool(bo); | |
552 | mutex_unlock(&bo->madv_lock); | |
553 | ||
c826a6e1 EA |
554 | mutex_lock(&vc4->bo_lock); |
555 | /* If the object references someone else's memory, we can't cache it. | |
556 | */ | |
557 | if (gem_bo->import_attach) { | |
558 | vc4_bo_destroy(bo); | |
559 | goto out; | |
560 | } | |
561 | ||
562 | /* Don't cache if it was publicly named. */ | |
563 | if (gem_bo->name) { | |
564 | vc4_bo_destroy(bo); | |
565 | goto out; | |
566 | } | |
567 | ||
ca39b449 | 568 | /* If this object was partially constructed but CMA allocation |
b9f19259 BB |
569 | * had failed, just free it. Can also happen when the BO has been |
570 | * purged. | |
ca39b449 EA |
571 | */ |
572 | if (!bo->base.vaddr) { | |
573 | vc4_bo_destroy(bo); | |
574 | goto out; | |
575 | } | |
576 | ||
c826a6e1 EA |
577 | cache_list = vc4_get_cache_list_for_size(dev, gem_bo->size); |
578 | if (!cache_list) { | |
579 | vc4_bo_destroy(bo); | |
580 | goto out; | |
581 | } | |
582 | ||
463873d5 | 583 | if (bo->validated_shader) { |
c0db1b67 | 584 | kfree(bo->validated_shader->uniform_addr_offsets); |
463873d5 EA |
585 | kfree(bo->validated_shader->texture_samples); |
586 | kfree(bo->validated_shader); | |
587 | bo->validated_shader = NULL; | |
588 | } | |
589 | ||
b9f19259 BB |
590 | /* Reset madv and usecnt before adding the BO to the cache. */ |
591 | bo->madv = __VC4_MADV_NOTSUPP; | |
592 | refcount_set(&bo->usecnt, 0); | |
593 | ||
83753117 | 594 | bo->t_format = false; |
c826a6e1 EA |
595 | bo->free_time = jiffies; |
596 | list_add(&bo->size_head, cache_list); | |
597 | list_add(&bo->unref_head, &vc4->bo_cache.time_list); | |
598 | ||
f3099462 | 599 | vc4_bo_set_label(&bo->base.base, VC4_BO_TYPE_KERNEL_CACHE); |
c826a6e1 EA |
600 | |
601 | vc4_bo_cache_free_old(dev); | |
602 | ||
603 | out: | |
604 | mutex_unlock(&vc4->bo_lock); | |
605 | } | |
606 | ||
607 | static void vc4_bo_cache_time_work(struct work_struct *work) | |
608 | { | |
609 | struct vc4_dev *vc4 = | |
610 | container_of(work, struct vc4_dev, bo_cache.time_work); | |
84d7d472 | 611 | struct drm_device *dev = &vc4->base; |
c826a6e1 EA |
612 | |
613 | mutex_lock(&vc4->bo_lock); | |
614 | vc4_bo_cache_free_old(dev); | |
615 | mutex_unlock(&vc4->bo_lock); | |
616 | } | |
617 | ||
b9f19259 BB |
618 | int vc4_bo_inc_usecnt(struct vc4_bo *bo) |
619 | { | |
620 | int ret; | |
621 | ||
622 | /* Fast path: if the BO is already retained by someone, no need to | |
623 | * check the madv status. | |
624 | */ | |
625 | if (refcount_inc_not_zero(&bo->usecnt)) | |
626 | return 0; | |
627 | ||
628 | mutex_lock(&bo->madv_lock); | |
629 | switch (bo->madv) { | |
630 | case VC4_MADV_WILLNEED: | |
5bfd4013 BB |
631 | if (!refcount_inc_not_zero(&bo->usecnt)) |
632 | refcount_set(&bo->usecnt, 1); | |
b9f19259 BB |
633 | ret = 0; |
634 | break; | |
635 | case VC4_MADV_DONTNEED: | |
636 | /* We shouldn't use a BO marked as purgeable if at least | |
637 | * someone else retained its content by incrementing usecnt. | |
638 | * Luckily the BO hasn't been purged yet, but something wrong | |
639 | * is happening here. Just throw an error instead of | |
640 | * authorizing this use case. | |
641 | */ | |
642 | case __VC4_MADV_PURGED: | |
643 | /* We can't use a purged BO. */ | |
644 | default: | |
645 | /* Invalid madv value. */ | |
646 | ret = -EINVAL; | |
647 | break; | |
648 | } | |
649 | mutex_unlock(&bo->madv_lock); | |
650 | ||
651 | return ret; | |
652 | } | |
653 | ||
654 | void vc4_bo_dec_usecnt(struct vc4_bo *bo) | |
655 | { | |
656 | /* Fast path: if the BO is still retained by someone, no need to test | |
657 | * the madv value. | |
658 | */ | |
659 | if (refcount_dec_not_one(&bo->usecnt)) | |
660 | return; | |
661 | ||
662 | mutex_lock(&bo->madv_lock); | |
663 | if (refcount_dec_and_test(&bo->usecnt) && | |
664 | bo->madv == VC4_MADV_DONTNEED) | |
665 | vc4_bo_add_to_purgeable_pool(bo); | |
666 | mutex_unlock(&bo->madv_lock); | |
667 | } | |
668 | ||
0078730f | 669 | static void vc4_bo_cache_time_timer(struct timer_list *t) |
c826a6e1 | 670 | { |
0078730f | 671 | struct vc4_dev *vc4 = from_timer(vc4, t, bo_cache.time_timer); |
c826a6e1 EA |
672 | |
673 | schedule_work(&vc4->bo_cache.time_work); | |
674 | } | |
675 | ||
e4fa8457 | 676 | struct dma_buf * vc4_prime_export(struct drm_gem_object *obj, int flags) |
463873d5 EA |
677 | { |
678 | struct vc4_bo *bo = to_vc4_bo(obj); | |
b9f19259 BB |
679 | struct dma_buf *dmabuf; |
680 | int ret; | |
463873d5 EA |
681 | |
682 | if (bo->validated_shader) { | |
fb95992a | 683 | DRM_DEBUG("Attempting to export shader BO\n"); |
463873d5 EA |
684 | return ERR_PTR(-EINVAL); |
685 | } | |
686 | ||
b9f19259 BB |
687 | /* Note: as soon as the BO is exported it becomes unpurgeable, because |
688 | * noone ever decrements the usecnt even if the reference held by the | |
689 | * exported BO is released. This shouldn't be a problem since we don't | |
690 | * expect exported BOs to be marked as purgeable. | |
691 | */ | |
692 | ret = vc4_bo_inc_usecnt(bo); | |
693 | if (ret) { | |
694 | DRM_ERROR("Failed to increment BO usecnt\n"); | |
695 | return ERR_PTR(ret); | |
696 | } | |
697 | ||
e4fa8457 | 698 | dmabuf = drm_gem_prime_export(obj, flags); |
b9f19259 BB |
699 | if (IS_ERR(dmabuf)) |
700 | vc4_bo_dec_usecnt(bo); | |
701 | ||
702 | return dmabuf; | |
703 | } | |
704 | ||
dd602022 | 705 | static vm_fault_t vc4_fault(struct vm_fault *vmf) |
b9f19259 BB |
706 | { |
707 | struct vm_area_struct *vma = vmf->vma; | |
708 | struct drm_gem_object *obj = vma->vm_private_data; | |
709 | struct vc4_bo *bo = to_vc4_bo(obj); | |
710 | ||
711 | /* The only reason we would end up here is when user-space accesses | |
712 | * BO's memory after it's been purged. | |
713 | */ | |
714 | mutex_lock(&bo->madv_lock); | |
715 | WARN_ON(bo->madv != __VC4_MADV_PURGED); | |
716 | mutex_unlock(&bo->madv_lock); | |
717 | ||
718 | return VM_FAULT_SIGBUS; | |
463873d5 EA |
719 | } |
720 | ||
721 | int vc4_mmap(struct file *filp, struct vm_area_struct *vma) | |
722 | { | |
723 | struct drm_gem_object *gem_obj; | |
b9f19259 | 724 | unsigned long vm_pgoff; |
463873d5 EA |
725 | struct vc4_bo *bo; |
726 | int ret; | |
727 | ||
728 | ret = drm_gem_mmap(filp, vma); | |
729 | if (ret) | |
730 | return ret; | |
731 | ||
732 | gem_obj = vma->vm_private_data; | |
733 | bo = to_vc4_bo(gem_obj); | |
734 | ||
735 | if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) { | |
fb95992a | 736 | DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n"); |
463873d5 EA |
737 | return -EINVAL; |
738 | } | |
739 | ||
b9f19259 BB |
740 | if (bo->madv != VC4_MADV_WILLNEED) { |
741 | DRM_DEBUG("mmaping of %s BO not allowed\n", | |
742 | bo->madv == VC4_MADV_DONTNEED ? | |
743 | "purgeable" : "purged"); | |
744 | return -EINVAL; | |
745 | } | |
746 | ||
463873d5 EA |
747 | /* |
748 | * Clear the VM_PFNMAP flag that was set by drm_gem_mmap(), and set the | |
749 | * vm_pgoff (used as a fake buffer offset by DRM) to 0 as we want to map | |
750 | * the whole buffer. | |
751 | */ | |
752 | vma->vm_flags &= ~VM_PFNMAP; | |
463873d5 | 753 | |
b9f19259 BB |
754 | /* This ->vm_pgoff dance is needed to make all parties happy: |
755 | * - dma_mmap_wc() uses ->vm_pgoff as an offset within the allocated | |
756 | * mem-region, hence the need to set it to zero (the value set by | |
757 | * the DRM core is a virtual offset encoding the GEM object-id) | |
758 | * - the mmap() core logic needs ->vm_pgoff to be restored to its | |
759 | * initial value before returning from this function because it | |
760 | * encodes the offset of this GEM in the dev->anon_inode pseudo-file | |
761 | * and this information will be used when we invalidate userspace | |
762 | * mappings with drm_vma_node_unmap() (called from vc4_gem_purge()). | |
763 | */ | |
764 | vm_pgoff = vma->vm_pgoff; | |
765 | vma->vm_pgoff = 0; | |
f6e45661 LR |
766 | ret = dma_mmap_wc(bo->base.base.dev->dev, vma, bo->base.vaddr, |
767 | bo->base.paddr, vma->vm_end - vma->vm_start); | |
b9f19259 BB |
768 | vma->vm_pgoff = vm_pgoff; |
769 | ||
463873d5 EA |
770 | if (ret) |
771 | drm_gem_vm_close(vma); | |
772 | ||
773 | return ret; | |
774 | } | |
775 | ||
776 | int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) | |
777 | { | |
778 | struct vc4_bo *bo = to_vc4_bo(obj); | |
779 | ||
780 | if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) { | |
fb95992a | 781 | DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n"); |
463873d5 EA |
782 | return -EINVAL; |
783 | } | |
784 | ||
785 | return drm_gem_cma_prime_mmap(obj, vma); | |
786 | } | |
787 | ||
49a3f51d | 788 | int vc4_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map) |
463873d5 EA |
789 | { |
790 | struct vc4_bo *bo = to_vc4_bo(obj); | |
791 | ||
792 | if (bo->validated_shader) { | |
fb95992a | 793 | DRM_DEBUG("mmaping of shader BOs not allowed.\n"); |
49a3f51d | 794 | return -EINVAL; |
463873d5 EA |
795 | } |
796 | ||
49a3f51d | 797 | return drm_gem_cma_prime_vmap(obj, map); |
463873d5 EA |
798 | } |
799 | ||
cdec4d36 EA |
800 | struct drm_gem_object * |
801 | vc4_prime_import_sg_table(struct drm_device *dev, | |
802 | struct dma_buf_attachment *attach, | |
803 | struct sg_table *sgt) | |
804 | { | |
805 | struct drm_gem_object *obj; | |
cdec4d36 EA |
806 | |
807 | obj = drm_gem_cma_prime_import_sg_table(dev, attach, sgt); | |
808 | if (IS_ERR(obj)) | |
809 | return obj; | |
810 | ||
cdec4d36 EA |
811 | return obj; |
812 | } | |
813 | ||
35c8b4b2 PK |
814 | static int vc4_grab_bin_bo(struct vc4_dev *vc4, struct vc4_file *vc4file) |
815 | { | |
816 | int ret; | |
817 | ||
818 | if (!vc4->v3d) | |
819 | return -ENODEV; | |
820 | ||
821 | if (vc4file->bin_bo_used) | |
822 | return 0; | |
823 | ||
824 | ret = vc4_v3d_bin_bo_get(vc4, &vc4file->bin_bo_used); | |
825 | if (ret) | |
826 | return ret; | |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
d5bc60f6 EA |
831 | int vc4_create_bo_ioctl(struct drm_device *dev, void *data, |
832 | struct drm_file *file_priv) | |
833 | { | |
834 | struct drm_vc4_create_bo *args = data; | |
35c8b4b2 PK |
835 | struct vc4_file *vc4file = file_priv->driver_priv; |
836 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
d5bc60f6 EA |
837 | struct vc4_bo *bo = NULL; |
838 | int ret; | |
839 | ||
35c8b4b2 PK |
840 | ret = vc4_grab_bin_bo(vc4, vc4file); |
841 | if (ret) | |
842 | return ret; | |
843 | ||
d5bc60f6 EA |
844 | /* |
845 | * We can't allocate from the BO cache, because the BOs don't | |
846 | * get zeroed, and that might leak data between users. | |
847 | */ | |
f3099462 | 848 | bo = vc4_bo_create(dev, args->size, false, VC4_BO_TYPE_V3D); |
2c68f1fc EA |
849 | if (IS_ERR(bo)) |
850 | return PTR_ERR(bo); | |
d5bc60f6 | 851 | |
b9f19259 BB |
852 | bo->madv = VC4_MADV_WILLNEED; |
853 | ||
d5bc60f6 | 854 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); |
f7a8cd30 | 855 | drm_gem_object_put(&bo->base.base); |
d5bc60f6 EA |
856 | |
857 | return ret; | |
858 | } | |
859 | ||
860 | int vc4_mmap_bo_ioctl(struct drm_device *dev, void *data, | |
861 | struct drm_file *file_priv) | |
862 | { | |
863 | struct drm_vc4_mmap_bo *args = data; | |
864 | struct drm_gem_object *gem_obj; | |
865 | ||
a8ad0bd8 | 866 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); |
d5bc60f6 | 867 | if (!gem_obj) { |
fb95992a | 868 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
d5bc60f6 EA |
869 | return -EINVAL; |
870 | } | |
871 | ||
872 | /* The mmap offset was set up at BO allocation time. */ | |
873 | args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node); | |
874 | ||
f7a8cd30 | 875 | drm_gem_object_put(gem_obj); |
d5bc60f6 EA |
876 | return 0; |
877 | } | |
878 | ||
463873d5 EA |
879 | int |
880 | vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, | |
881 | struct drm_file *file_priv) | |
882 | { | |
883 | struct drm_vc4_create_shader_bo *args = data; | |
35c8b4b2 PK |
884 | struct vc4_file *vc4file = file_priv->driver_priv; |
885 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
463873d5 EA |
886 | struct vc4_bo *bo = NULL; |
887 | int ret; | |
888 | ||
889 | if (args->size == 0) | |
890 | return -EINVAL; | |
891 | ||
892 | if (args->size % sizeof(u64) != 0) | |
893 | return -EINVAL; | |
894 | ||
895 | if (args->flags != 0) { | |
896 | DRM_INFO("Unknown flags set: 0x%08x\n", args->flags); | |
897 | return -EINVAL; | |
898 | } | |
899 | ||
900 | if (args->pad != 0) { | |
901 | DRM_INFO("Pad set: 0x%08x\n", args->pad); | |
902 | return -EINVAL; | |
903 | } | |
904 | ||
35c8b4b2 PK |
905 | ret = vc4_grab_bin_bo(vc4, vc4file); |
906 | if (ret) | |
907 | return ret; | |
908 | ||
f3099462 | 909 | bo = vc4_bo_create(dev, args->size, true, VC4_BO_TYPE_V3D_SHADER); |
2c68f1fc EA |
910 | if (IS_ERR(bo)) |
911 | return PTR_ERR(bo); | |
463873d5 | 912 | |
b9f19259 BB |
913 | bo->madv = VC4_MADV_WILLNEED; |
914 | ||
585cb132 | 915 | if (copy_from_user(bo->base.vaddr, |
463873d5 | 916 | (void __user *)(uintptr_t)args->data, |
585cb132 DC |
917 | args->size)) { |
918 | ret = -EFAULT; | |
463873d5 | 919 | goto fail; |
585cb132 | 920 | } |
463873d5 EA |
921 | /* Clear the rest of the memory from allocating from the BO |
922 | * cache. | |
923 | */ | |
924 | memset(bo->base.vaddr + args->size, 0, | |
925 | bo->base.base.size - args->size); | |
926 | ||
927 | bo->validated_shader = vc4_validate_shader(&bo->base); | |
928 | if (!bo->validated_shader) { | |
929 | ret = -EINVAL; | |
930 | goto fail; | |
931 | } | |
932 | ||
933 | /* We have to create the handle after validation, to avoid | |
934 | * races for users to do doing things like mmap the shader BO. | |
935 | */ | |
936 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); | |
937 | ||
35c8b4b2 | 938 | fail: |
f7a8cd30 | 939 | drm_gem_object_put(&bo->base.base); |
463873d5 EA |
940 | |
941 | return ret; | |
942 | } | |
943 | ||
83753117 EA |
944 | /** |
945 | * vc4_set_tiling_ioctl() - Sets the tiling modifier for a BO. | |
946 | * @dev: DRM device | |
947 | * @data: ioctl argument | |
948 | * @file_priv: DRM file for this fd | |
949 | * | |
950 | * The tiling state of the BO decides the default modifier of an fb if | |
951 | * no specific modifier was set by userspace, and the return value of | |
952 | * vc4_get_tiling_ioctl() (so that userspace can treat a BO it | |
953 | * received from dmabuf as the same tiling format as the producer | |
954 | * used). | |
955 | */ | |
956 | int vc4_set_tiling_ioctl(struct drm_device *dev, void *data, | |
957 | struct drm_file *file_priv) | |
958 | { | |
959 | struct drm_vc4_set_tiling *args = data; | |
960 | struct drm_gem_object *gem_obj; | |
961 | struct vc4_bo *bo; | |
962 | bool t_format; | |
963 | ||
964 | if (args->flags != 0) | |
965 | return -EINVAL; | |
966 | ||
967 | switch (args->modifier) { | |
968 | case DRM_FORMAT_MOD_NONE: | |
969 | t_format = false; | |
970 | break; | |
971 | case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: | |
972 | t_format = true; | |
973 | break; | |
974 | default: | |
975 | return -EINVAL; | |
976 | } | |
977 | ||
978 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
979 | if (!gem_obj) { | |
fb95992a | 980 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
83753117 EA |
981 | return -ENOENT; |
982 | } | |
983 | bo = to_vc4_bo(gem_obj); | |
984 | bo->t_format = t_format; | |
985 | ||
f7a8cd30 | 986 | drm_gem_object_put(gem_obj); |
83753117 EA |
987 | |
988 | return 0; | |
989 | } | |
990 | ||
991 | /** | |
992 | * vc4_get_tiling_ioctl() - Gets the tiling modifier for a BO. | |
993 | * @dev: DRM device | |
994 | * @data: ioctl argument | |
995 | * @file_priv: DRM file for this fd | |
996 | * | |
997 | * Returns the tiling modifier for a BO as set by vc4_set_tiling_ioctl(). | |
998 | */ | |
999 | int vc4_get_tiling_ioctl(struct drm_device *dev, void *data, | |
1000 | struct drm_file *file_priv) | |
1001 | { | |
1002 | struct drm_vc4_get_tiling *args = data; | |
1003 | struct drm_gem_object *gem_obj; | |
1004 | struct vc4_bo *bo; | |
1005 | ||
1006 | if (args->flags != 0 || args->modifier != 0) | |
1007 | return -EINVAL; | |
1008 | ||
1009 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
1010 | if (!gem_obj) { | |
fb95992a | 1011 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
83753117 EA |
1012 | return -ENOENT; |
1013 | } | |
1014 | bo = to_vc4_bo(gem_obj); | |
1015 | ||
1016 | if (bo->t_format) | |
1017 | args->modifier = DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED; | |
1018 | else | |
1019 | args->modifier = DRM_FORMAT_MOD_NONE; | |
1020 | ||
f7a8cd30 | 1021 | drm_gem_object_put(gem_obj); |
83753117 EA |
1022 | |
1023 | return 0; | |
1024 | } | |
1025 | ||
1c80be48 | 1026 | static void vc4_bo_cache_destroy(struct drm_device *dev, void *unused); |
f3099462 | 1027 | int vc4_bo_cache_init(struct drm_device *dev) |
c826a6e1 EA |
1028 | { |
1029 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
f3099462 EA |
1030 | int i; |
1031 | ||
1032 | /* Create the initial set of BO labels that the kernel will | |
1033 | * use. This lets us avoid a bunch of string reallocation in | |
1034 | * the kernel's draw and BO allocation paths. | |
1035 | */ | |
1036 | vc4->bo_labels = kcalloc(VC4_BO_TYPE_COUNT, sizeof(*vc4->bo_labels), | |
1037 | GFP_KERNEL); | |
1038 | if (!vc4->bo_labels) | |
1039 | return -ENOMEM; | |
1040 | vc4->num_labels = VC4_BO_TYPE_COUNT; | |
1041 | ||
1042 | BUILD_BUG_ON(ARRAY_SIZE(bo_type_names) != VC4_BO_TYPE_COUNT); | |
1043 | for (i = 0; i < VC4_BO_TYPE_COUNT; i++) | |
1044 | vc4->bo_labels[i].name = bo_type_names[i]; | |
c826a6e1 EA |
1045 | |
1046 | mutex_init(&vc4->bo_lock); | |
1047 | ||
c9be804c EA |
1048 | vc4_debugfs_add_file(dev, "bo_stats", vc4_bo_stats_debugfs, NULL); |
1049 | ||
c826a6e1 EA |
1050 | INIT_LIST_HEAD(&vc4->bo_cache.time_list); |
1051 | ||
1052 | INIT_WORK(&vc4->bo_cache.time_work, vc4_bo_cache_time_work); | |
0078730f | 1053 | timer_setup(&vc4->bo_cache.time_timer, vc4_bo_cache_time_timer, 0); |
f3099462 | 1054 | |
1c80be48 | 1055 | return drmm_add_action_or_reset(dev, vc4_bo_cache_destroy, NULL); |
c826a6e1 EA |
1056 | } |
1057 | ||
1c80be48 | 1058 | static void vc4_bo_cache_destroy(struct drm_device *dev, void *unused) |
c826a6e1 EA |
1059 | { |
1060 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
f3099462 | 1061 | int i; |
c826a6e1 EA |
1062 | |
1063 | del_timer(&vc4->bo_cache.time_timer); | |
1064 | cancel_work_sync(&vc4->bo_cache.time_work); | |
1065 | ||
1066 | vc4_bo_cache_purge(dev); | |
1067 | ||
f3099462 EA |
1068 | for (i = 0; i < vc4->num_labels; i++) { |
1069 | if (vc4->bo_labels[i].num_allocated) { | |
1070 | DRM_ERROR("Destroying BO cache with %d %s " | |
1071 | "BOs still allocated\n", | |
1072 | vc4->bo_labels[i].num_allocated, | |
1073 | vc4->bo_labels[i].name); | |
1074 | } | |
1075 | ||
1076 | if (is_user_label(i)) | |
1077 | kfree(vc4->bo_labels[i].name); | |
c826a6e1 | 1078 | } |
f3099462 EA |
1079 | kfree(vc4->bo_labels); |
1080 | } | |
1081 | ||
1082 | int vc4_label_bo_ioctl(struct drm_device *dev, void *data, | |
1083 | struct drm_file *file_priv) | |
1084 | { | |
1085 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
1086 | struct drm_vc4_label_bo *args = data; | |
1087 | char *name; | |
1088 | struct drm_gem_object *gem_obj; | |
1089 | int ret = 0, label; | |
1090 | ||
1091 | if (!args->len) | |
1092 | return -EINVAL; | |
1093 | ||
1094 | name = strndup_user(u64_to_user_ptr(args->name), args->len + 1); | |
1095 | if (IS_ERR(name)) | |
1096 | return PTR_ERR(name); | |
1097 | ||
1098 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
1099 | if (!gem_obj) { | |
1100 | DRM_ERROR("Failed to look up GEM BO %d\n", args->handle); | |
1101 | kfree(name); | |
1102 | return -ENOENT; | |
1103 | } | |
1104 | ||
1105 | mutex_lock(&vc4->bo_lock); | |
1106 | label = vc4_get_user_label(vc4, name); | |
1107 | if (label != -1) | |
1108 | vc4_bo_set_label(gem_obj, label); | |
1109 | else | |
1110 | ret = -ENOMEM; | |
1111 | mutex_unlock(&vc4->bo_lock); | |
1112 | ||
f7a8cd30 | 1113 | drm_gem_object_put(gem_obj); |
f3099462 EA |
1114 | |
1115 | return ret; | |
c826a6e1 | 1116 | } |