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fb1d9738 JB |
1 | /************************************************************************** |
2 | * | |
54fbde8a | 3 | * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA |
fb1d9738 JB |
4 | * All Rights Reserved. |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | ||
28 | #include "vmwgfx_drv.h" | |
760285e7 DH |
29 | #include <drm/vmwgfx_drm.h> |
30 | #include <drm/ttm/ttm_object.h> | |
31 | #include <drm/ttm/ttm_placement.h> | |
32 | #include <drm/drmP.h> | |
543831cf | 33 | #include "vmwgfx_resource_priv.h" |
d80efd5c | 34 | #include "vmwgfx_binding.h" |
fb1d9738 | 35 | |
ea029c28 TH |
36 | #define VMW_RES_EVICT_ERR_COUNT 10 |
37 | ||
fb1d9738 | 38 | struct vmw_user_dma_buffer { |
c486d4f8 | 39 | struct ttm_prime_object prime; |
fb1d9738 JB |
40 | struct vmw_dma_buffer dma; |
41 | }; | |
42 | ||
43 | struct vmw_bo_user_rep { | |
44 | uint32_t handle; | |
45 | uint64_t map_handle; | |
46 | }; | |
47 | ||
48 | struct vmw_stream { | |
49 | struct vmw_resource res; | |
50 | uint32_t stream_id; | |
51 | }; | |
52 | ||
53 | struct vmw_user_stream { | |
54 | struct ttm_base_object base; | |
55 | struct vmw_stream stream; | |
56 | }; | |
57 | ||
c0951b79 TH |
58 | |
59 | static uint64_t vmw_user_stream_size; | |
60 | ||
61 | static const struct vmw_res_func vmw_stream_func = { | |
62 | .res_type = vmw_res_stream, | |
63 | .needs_backup = false, | |
64 | .may_evict = false, | |
65 | .type_name = "video streams", | |
66 | .backup_placement = NULL, | |
67 | .create = NULL, | |
68 | .destroy = NULL, | |
69 | .bind = NULL, | |
70 | .unbind = NULL | |
71 | }; | |
72 | ||
fb1d9738 JB |
73 | static inline struct vmw_dma_buffer * |
74 | vmw_dma_buffer(struct ttm_buffer_object *bo) | |
75 | { | |
76 | return container_of(bo, struct vmw_dma_buffer, base); | |
77 | } | |
78 | ||
79 | static inline struct vmw_user_dma_buffer * | |
80 | vmw_user_dma_buffer(struct ttm_buffer_object *bo) | |
81 | { | |
82 | struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); | |
83 | return container_of(vmw_bo, struct vmw_user_dma_buffer, dma); | |
84 | } | |
85 | ||
86 | struct vmw_resource *vmw_resource_reference(struct vmw_resource *res) | |
87 | { | |
88 | kref_get(&res->kref); | |
89 | return res; | |
90 | } | |
91 | ||
30f82d81 TH |
92 | struct vmw_resource * |
93 | vmw_resource_reference_unless_doomed(struct vmw_resource *res) | |
94 | { | |
95 | return kref_get_unless_zero(&res->kref) ? res : NULL; | |
96 | } | |
5bb39e81 TH |
97 | |
98 | /** | |
99 | * vmw_resource_release_id - release a resource id to the id manager. | |
100 | * | |
101 | * @res: Pointer to the resource. | |
102 | * | |
103 | * Release the resource id to the resource id manager and set it to -1 | |
104 | */ | |
543831cf | 105 | void vmw_resource_release_id(struct vmw_resource *res) |
5bb39e81 TH |
106 | { |
107 | struct vmw_private *dev_priv = res->dev_priv; | |
c0951b79 | 108 | struct idr *idr = &dev_priv->res_idr[res->func->res_type]; |
5bb39e81 TH |
109 | |
110 | write_lock(&dev_priv->resource_lock); | |
111 | if (res->id != -1) | |
c0951b79 | 112 | idr_remove(idr, res->id); |
5bb39e81 TH |
113 | res->id = -1; |
114 | write_unlock(&dev_priv->resource_lock); | |
115 | } | |
116 | ||
fb1d9738 JB |
117 | static void vmw_resource_release(struct kref *kref) |
118 | { | |
119 | struct vmw_resource *res = | |
120 | container_of(kref, struct vmw_resource, kref); | |
121 | struct vmw_private *dev_priv = res->dev_priv; | |
c0951b79 TH |
122 | int id; |
123 | struct idr *idr = &dev_priv->res_idr[res->func->res_type]; | |
fb1d9738 | 124 | |
b9eb1a61 | 125 | write_lock(&dev_priv->resource_lock); |
5bb39e81 | 126 | res->avail = false; |
c0951b79 | 127 | list_del_init(&res->lru_head); |
fb1d9738 | 128 | write_unlock(&dev_priv->resource_lock); |
c0951b79 TH |
129 | if (res->backup) { |
130 | struct ttm_buffer_object *bo = &res->backup->base; | |
131 | ||
ee3939e0 | 132 | ttm_bo_reserve(bo, false, false, false, NULL); |
c0951b79 TH |
133 | if (!list_empty(&res->mob_head) && |
134 | res->func->unbind != NULL) { | |
135 | struct ttm_validate_buffer val_buf; | |
136 | ||
137 | val_buf.bo = bo; | |
ae9c0af2 | 138 | val_buf.shared = false; |
c0951b79 TH |
139 | res->func->unbind(res, false, &val_buf); |
140 | } | |
141 | res->backup_dirty = false; | |
142 | list_del_init(&res->mob_head); | |
143 | ttm_bo_unreserve(bo); | |
144 | vmw_dmabuf_unreference(&res->backup); | |
145 | } | |
fb1d9738 | 146 | |
30f82d81 | 147 | if (likely(res->hw_destroy != NULL)) { |
30f82d81 | 148 | mutex_lock(&dev_priv->binding_mutex); |
d80efd5c | 149 | vmw_binding_res_list_kill(&res->binding_head); |
30f82d81 | 150 | mutex_unlock(&dev_priv->binding_mutex); |
d80efd5c | 151 | res->hw_destroy(res); |
30f82d81 | 152 | } |
fb1d9738 | 153 | |
c0951b79 | 154 | id = res->id; |
fb1d9738 JB |
155 | if (res->res_free != NULL) |
156 | res->res_free(res); | |
157 | else | |
158 | kfree(res); | |
159 | ||
160 | write_lock(&dev_priv->resource_lock); | |
5bb39e81 TH |
161 | if (id != -1) |
162 | idr_remove(idr, id); | |
b9eb1a61 | 163 | write_unlock(&dev_priv->resource_lock); |
fb1d9738 JB |
164 | } |
165 | ||
166 | void vmw_resource_unreference(struct vmw_resource **p_res) | |
167 | { | |
168 | struct vmw_resource *res = *p_res; | |
fb1d9738 JB |
169 | |
170 | *p_res = NULL; | |
fb1d9738 | 171 | kref_put(&res->kref, vmw_resource_release); |
fb1d9738 JB |
172 | } |
173 | ||
5bb39e81 TH |
174 | |
175 | /** | |
176 | * vmw_resource_alloc_id - release a resource id to the id manager. | |
177 | * | |
5bb39e81 TH |
178 | * @res: Pointer to the resource. |
179 | * | |
180 | * Allocate the lowest free resource from the resource manager, and set | |
181 | * @res->id to that id. Returns 0 on success and -ENOMEM on failure. | |
182 | */ | |
543831cf | 183 | int vmw_resource_alloc_id(struct vmw_resource *res) |
5bb39e81 | 184 | { |
c0951b79 | 185 | struct vmw_private *dev_priv = res->dev_priv; |
5bb39e81 | 186 | int ret; |
c0951b79 | 187 | struct idr *idr = &dev_priv->res_idr[res->func->res_type]; |
5bb39e81 TH |
188 | |
189 | BUG_ON(res->id != -1); | |
190 | ||
cc39a8fa TH |
191 | idr_preload(GFP_KERNEL); |
192 | write_lock(&dev_priv->resource_lock); | |
5bb39e81 | 193 | |
cc39a8fa TH |
194 | ret = idr_alloc(idr, res, 1, 0, GFP_NOWAIT); |
195 | if (ret >= 0) | |
196 | res->id = ret; | |
5bb39e81 | 197 | |
cc39a8fa TH |
198 | write_unlock(&dev_priv->resource_lock); |
199 | idr_preload_end(); | |
200 | return ret < 0 ? ret : 0; | |
5bb39e81 TH |
201 | } |
202 | ||
c0951b79 TH |
203 | /** |
204 | * vmw_resource_init - initialize a struct vmw_resource | |
205 | * | |
206 | * @dev_priv: Pointer to a device private struct. | |
207 | * @res: The struct vmw_resource to initialize. | |
208 | * @obj_type: Resource object type. | |
209 | * @delay_id: Boolean whether to defer device id allocation until | |
210 | * the first validation. | |
211 | * @res_free: Resource destructor. | |
212 | * @func: Resource function table. | |
213 | */ | |
543831cf TH |
214 | int vmw_resource_init(struct vmw_private *dev_priv, struct vmw_resource *res, |
215 | bool delay_id, | |
216 | void (*res_free) (struct vmw_resource *res), | |
217 | const struct vmw_res_func *func) | |
fb1d9738 | 218 | { |
fb1d9738 JB |
219 | kref_init(&res->kref); |
220 | res->hw_destroy = NULL; | |
221 | res->res_free = res_free; | |
fb1d9738 JB |
222 | res->avail = false; |
223 | res->dev_priv = dev_priv; | |
c0951b79 TH |
224 | res->func = func; |
225 | INIT_LIST_HEAD(&res->lru_head); | |
226 | INIT_LIST_HEAD(&res->mob_head); | |
173fb7d4 | 227 | INIT_LIST_HEAD(&res->binding_head); |
5bb39e81 | 228 | res->id = -1; |
c0951b79 TH |
229 | res->backup = NULL; |
230 | res->backup_offset = 0; | |
231 | res->backup_dirty = false; | |
232 | res->res_dirty = false; | |
5bb39e81 TH |
233 | if (delay_id) |
234 | return 0; | |
235 | else | |
c0951b79 | 236 | return vmw_resource_alloc_id(res); |
fb1d9738 JB |
237 | } |
238 | ||
239 | /** | |
240 | * vmw_resource_activate | |
241 | * | |
242 | * @res: Pointer to the newly created resource | |
243 | * @hw_destroy: Destroy function. NULL if none. | |
244 | * | |
245 | * Activate a resource after the hardware has been made aware of it. | |
246 | * Set tye destroy function to @destroy. Typically this frees the | |
247 | * resource and destroys the hardware resources associated with it. | |
248 | * Activate basically means that the function vmw_resource_lookup will | |
249 | * find it. | |
250 | */ | |
543831cf TH |
251 | void vmw_resource_activate(struct vmw_resource *res, |
252 | void (*hw_destroy) (struct vmw_resource *)) | |
fb1d9738 JB |
253 | { |
254 | struct vmw_private *dev_priv = res->dev_priv; | |
255 | ||
256 | write_lock(&dev_priv->resource_lock); | |
257 | res->avail = true; | |
258 | res->hw_destroy = hw_destroy; | |
259 | write_unlock(&dev_priv->resource_lock); | |
260 | } | |
261 | ||
b9eb1a61 TH |
262 | static struct vmw_resource *vmw_resource_lookup(struct vmw_private *dev_priv, |
263 | struct idr *idr, int id) | |
fb1d9738 JB |
264 | { |
265 | struct vmw_resource *res; | |
266 | ||
267 | read_lock(&dev_priv->resource_lock); | |
268 | res = idr_find(idr, id); | |
b9eb1a61 | 269 | if (!res || !res->avail || !kref_get_unless_zero(&res->kref)) |
fb1d9738 | 270 | res = NULL; |
b9eb1a61 | 271 | |
fb1d9738 JB |
272 | read_unlock(&dev_priv->resource_lock); |
273 | ||
274 | if (unlikely(res == NULL)) | |
275 | return NULL; | |
276 | ||
277 | return res; | |
278 | } | |
279 | ||
c0951b79 TH |
280 | /** |
281 | * vmw_user_resource_lookup_handle - lookup a struct resource from a | |
282 | * TTM user-space handle and perform basic type checks | |
283 | * | |
284 | * @dev_priv: Pointer to a device private struct | |
285 | * @tfile: Pointer to a struct ttm_object_file identifying the caller | |
286 | * @handle: The TTM user-space handle | |
287 | * @converter: Pointer to an object describing the resource type | |
288 | * @p_res: On successful return the location pointed to will contain | |
289 | * a pointer to a refcounted struct vmw_resource. | |
290 | * | |
291 | * If the handle can't be found or is associated with an incorrect resource | |
292 | * type, -EINVAL will be returned. | |
293 | */ | |
294 | int vmw_user_resource_lookup_handle(struct vmw_private *dev_priv, | |
295 | struct ttm_object_file *tfile, | |
296 | uint32_t handle, | |
297 | const struct vmw_user_resource_conv | |
298 | *converter, | |
299 | struct vmw_resource **p_res) | |
fb1d9738 | 300 | { |
7a73ba74 | 301 | struct ttm_base_object *base; |
c0951b79 TH |
302 | struct vmw_resource *res; |
303 | int ret = -EINVAL; | |
fb1d9738 | 304 | |
7a73ba74 TH |
305 | base = ttm_base_object_lookup(tfile, handle); |
306 | if (unlikely(base == NULL)) | |
307 | return -EINVAL; | |
308 | ||
79e5f810 | 309 | if (unlikely(ttm_base_object_type(base) != converter->object_type)) |
c0951b79 | 310 | goto out_bad_resource; |
7a73ba74 | 311 | |
c0951b79 | 312 | res = converter->base_obj_to_res(base); |
7a73ba74 | 313 | |
c0951b79 TH |
314 | read_lock(&dev_priv->resource_lock); |
315 | if (!res->avail || res->res_free != converter->res_free) { | |
316 | read_unlock(&dev_priv->resource_lock); | |
317 | goto out_bad_resource; | |
318 | } | |
fb1d9738 | 319 | |
c0951b79 TH |
320 | kref_get(&res->kref); |
321 | read_unlock(&dev_priv->resource_lock); | |
322 | ||
323 | *p_res = res; | |
324 | ret = 0; | |
325 | ||
326 | out_bad_resource: | |
7a73ba74 | 327 | ttm_base_object_unref(&base); |
c0951b79 TH |
328 | |
329 | return ret; | |
330 | } | |
331 | ||
332 | /** | |
333 | * Helper function that looks either a surface or dmabuf. | |
334 | * | |
335 | * The pointer this pointed at by out_surf and out_buf needs to be null. | |
336 | */ | |
337 | int vmw_user_lookup_handle(struct vmw_private *dev_priv, | |
338 | struct ttm_object_file *tfile, | |
339 | uint32_t handle, | |
340 | struct vmw_surface **out_surf, | |
341 | struct vmw_dma_buffer **out_buf) | |
342 | { | |
343 | struct vmw_resource *res; | |
344 | int ret; | |
345 | ||
346 | BUG_ON(*out_surf || *out_buf); | |
347 | ||
348 | ret = vmw_user_resource_lookup_handle(dev_priv, tfile, handle, | |
349 | user_surface_converter, | |
350 | &res); | |
351 | if (!ret) { | |
352 | *out_surf = vmw_res_to_srf(res); | |
353 | return 0; | |
354 | } | |
355 | ||
356 | *out_surf = NULL; | |
54c12bc3 | 357 | ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf, NULL); |
fb1d9738 JB |
358 | return ret; |
359 | } | |
360 | ||
361 | /** | |
362 | * Buffer management. | |
363 | */ | |
308d17ef TH |
364 | |
365 | /** | |
366 | * vmw_dmabuf_acc_size - Calculate the pinned memory usage of buffers | |
367 | * | |
368 | * @dev_priv: Pointer to a struct vmw_private identifying the device. | |
369 | * @size: The requested buffer size. | |
370 | * @user: Whether this is an ordinary dma buffer or a user dma buffer. | |
371 | */ | |
372 | static size_t vmw_dmabuf_acc_size(struct vmw_private *dev_priv, size_t size, | |
373 | bool user) | |
374 | { | |
375 | static size_t struct_size, user_struct_size; | |
376 | size_t num_pages = PAGE_ALIGN(size) >> PAGE_SHIFT; | |
377 | size_t page_array_size = ttm_round_pot(num_pages * sizeof(void *)); | |
378 | ||
379 | if (unlikely(struct_size == 0)) { | |
380 | size_t backend_size = ttm_round_pot(vmw_tt_size); | |
381 | ||
382 | struct_size = backend_size + | |
383 | ttm_round_pot(sizeof(struct vmw_dma_buffer)); | |
384 | user_struct_size = backend_size + | |
385 | ttm_round_pot(sizeof(struct vmw_user_dma_buffer)); | |
386 | } | |
387 | ||
388 | if (dev_priv->map_mode == vmw_dma_alloc_coherent) | |
389 | page_array_size += | |
390 | ttm_round_pot(num_pages * sizeof(dma_addr_t)); | |
391 | ||
392 | return ((user) ? user_struct_size : struct_size) + | |
393 | page_array_size; | |
394 | } | |
395 | ||
effe1105 TH |
396 | void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo) |
397 | { | |
398 | struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); | |
effe1105 | 399 | |
fb1d9738 JB |
400 | kfree(vmw_bo); |
401 | } | |
402 | ||
308d17ef TH |
403 | static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo) |
404 | { | |
405 | struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo); | |
406 | ||
407 | ttm_prime_object_kfree(vmw_user_bo, prime); | |
408 | } | |
409 | ||
fb1d9738 JB |
410 | int vmw_dmabuf_init(struct vmw_private *dev_priv, |
411 | struct vmw_dma_buffer *vmw_bo, | |
412 | size_t size, struct ttm_placement *placement, | |
413 | bool interruptible, | |
414 | void (*bo_free) (struct ttm_buffer_object *bo)) | |
415 | { | |
416 | struct ttm_bo_device *bdev = &dev_priv->bdev; | |
fb1d9738 JB |
417 | size_t acc_size; |
418 | int ret; | |
308d17ef | 419 | bool user = (bo_free == &vmw_user_dmabuf_destroy); |
fb1d9738 | 420 | |
308d17ef | 421 | BUG_ON(!bo_free && (!user && (bo_free != vmw_dmabuf_bo_free))); |
fb1d9738 | 422 | |
308d17ef | 423 | acc_size = vmw_dmabuf_acc_size(dev_priv, size, user); |
fb1d9738 JB |
424 | memset(vmw_bo, 0, sizeof(*vmw_bo)); |
425 | ||
c0951b79 | 426 | INIT_LIST_HEAD(&vmw_bo->res_list); |
fb1d9738 JB |
427 | |
428 | ret = ttm_bo_init(bdev, &vmw_bo->base, size, | |
a34417f6 | 429 | ttm_bo_type_device, placement, |
0b91c4a1 | 430 | 0, interruptible, |
f4f4e3e3 | 431 | NULL, acc_size, NULL, NULL, bo_free); |
fb1d9738 JB |
432 | return ret; |
433 | } | |
434 | ||
fb1d9738 JB |
435 | static void vmw_user_dmabuf_release(struct ttm_base_object **p_base) |
436 | { | |
437 | struct vmw_user_dma_buffer *vmw_user_bo; | |
438 | struct ttm_base_object *base = *p_base; | |
439 | struct ttm_buffer_object *bo; | |
440 | ||
441 | *p_base = NULL; | |
442 | ||
443 | if (unlikely(base == NULL)) | |
444 | return; | |
445 | ||
c486d4f8 TH |
446 | vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, |
447 | prime.base); | |
fb1d9738 JB |
448 | bo = &vmw_user_bo->dma.base; |
449 | ttm_bo_unref(&bo); | |
450 | } | |
451 | ||
1d7a5cbf TH |
452 | static void vmw_user_dmabuf_ref_obj_release(struct ttm_base_object *base, |
453 | enum ttm_ref_type ref_type) | |
454 | { | |
455 | struct vmw_user_dma_buffer *user_bo; | |
456 | user_bo = container_of(base, struct vmw_user_dma_buffer, prime.base); | |
457 | ||
458 | switch (ref_type) { | |
459 | case TTM_REF_SYNCCPU_WRITE: | |
460 | ttm_bo_synccpu_write_release(&user_bo->dma.base); | |
461 | break; | |
462 | default: | |
463 | BUG(); | |
464 | } | |
465 | } | |
466 | ||
c0951b79 TH |
467 | /** |
468 | * vmw_user_dmabuf_alloc - Allocate a user dma buffer | |
469 | * | |
470 | * @dev_priv: Pointer to a struct device private. | |
471 | * @tfile: Pointer to a struct ttm_object_file on which to register the user | |
472 | * object. | |
473 | * @size: Size of the dma buffer. | |
474 | * @shareable: Boolean whether the buffer is shareable with other open files. | |
475 | * @handle: Pointer to where the handle value should be assigned. | |
476 | * @p_dma_buf: Pointer to where the refcounted struct vmw_dma_buffer pointer | |
477 | * should be assigned. | |
478 | */ | |
479 | int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv, | |
480 | struct ttm_object_file *tfile, | |
481 | uint32_t size, | |
482 | bool shareable, | |
483 | uint32_t *handle, | |
54c12bc3 TH |
484 | struct vmw_dma_buffer **p_dma_buf, |
485 | struct ttm_base_object **p_base) | |
c0951b79 TH |
486 | { |
487 | struct vmw_user_dma_buffer *user_bo; | |
488 | struct ttm_buffer_object *tmp; | |
489 | int ret; | |
490 | ||
491 | user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL); | |
492 | if (unlikely(user_bo == NULL)) { | |
493 | DRM_ERROR("Failed to allocate a buffer.\n"); | |
494 | return -ENOMEM; | |
495 | } | |
496 | ||
497 | ret = vmw_dmabuf_init(dev_priv, &user_bo->dma, size, | |
96c5f0df | 498 | (dev_priv->has_mob) ? |
6bf6bf03 | 499 | &vmw_sys_placement : |
c0951b79 TH |
500 | &vmw_vram_sys_placement, true, |
501 | &vmw_user_dmabuf_destroy); | |
502 | if (unlikely(ret != 0)) | |
503 | return ret; | |
504 | ||
505 | tmp = ttm_bo_reference(&user_bo->dma.base); | |
c486d4f8 TH |
506 | ret = ttm_prime_object_init(tfile, |
507 | size, | |
508 | &user_bo->prime, | |
509 | shareable, | |
510 | ttm_buffer_type, | |
1d7a5cbf TH |
511 | &vmw_user_dmabuf_release, |
512 | &vmw_user_dmabuf_ref_obj_release); | |
c0951b79 TH |
513 | if (unlikely(ret != 0)) { |
514 | ttm_bo_unref(&tmp); | |
515 | goto out_no_base_object; | |
516 | } | |
517 | ||
518 | *p_dma_buf = &user_bo->dma; | |
54c12bc3 TH |
519 | if (p_base) { |
520 | *p_base = &user_bo->prime.base; | |
521 | kref_get(&(*p_base)->refcount); | |
522 | } | |
c486d4f8 | 523 | *handle = user_bo->prime.base.hash.key; |
c0951b79 TH |
524 | |
525 | out_no_base_object: | |
526 | return ret; | |
527 | } | |
528 | ||
d08a9b9c TH |
529 | /** |
530 | * vmw_user_dmabuf_verify_access - verify access permissions on this | |
531 | * buffer object. | |
532 | * | |
533 | * @bo: Pointer to the buffer object being accessed | |
534 | * @tfile: Identifying the caller. | |
535 | */ | |
536 | int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo, | |
537 | struct ttm_object_file *tfile) | |
538 | { | |
539 | struct vmw_user_dma_buffer *vmw_user_bo; | |
540 | ||
541 | if (unlikely(bo->destroy != vmw_user_dmabuf_destroy)) | |
542 | return -EPERM; | |
543 | ||
544 | vmw_user_bo = vmw_user_dma_buffer(bo); | |
f6dfe73a TH |
545 | |
546 | /* Check that the caller has opened the object. */ | |
547 | if (likely(ttm_ref_object_exists(tfile, &vmw_user_bo->prime.base))) | |
548 | return 0; | |
549 | ||
550 | DRM_ERROR("Could not grant buffer access.\n"); | |
551 | return -EPERM; | |
d08a9b9c TH |
552 | } |
553 | ||
1d7a5cbf TH |
554 | /** |
555 | * vmw_user_dmabuf_synccpu_grab - Grab a struct vmw_user_dma_buffer for cpu | |
556 | * access, idling previous GPU operations on the buffer and optionally | |
557 | * blocking it for further command submissions. | |
558 | * | |
559 | * @user_bo: Pointer to the buffer object being grabbed for CPU access | |
560 | * @tfile: Identifying the caller. | |
561 | * @flags: Flags indicating how the grab should be performed. | |
562 | * | |
563 | * A blocking grab will be automatically released when @tfile is closed. | |
564 | */ | |
565 | static int vmw_user_dmabuf_synccpu_grab(struct vmw_user_dma_buffer *user_bo, | |
566 | struct ttm_object_file *tfile, | |
567 | uint32_t flags) | |
568 | { | |
569 | struct ttm_buffer_object *bo = &user_bo->dma.base; | |
570 | bool existed; | |
571 | int ret; | |
572 | ||
573 | if (flags & drm_vmw_synccpu_allow_cs) { | |
dd7cfd64 | 574 | bool nonblock = !!(flags & drm_vmw_synccpu_dontblock); |
5fbad992 | 575 | long lret; |
1d7a5cbf | 576 | |
5fbad992 ML |
577 | if (nonblock) |
578 | return reservation_object_test_signaled_rcu(bo->resv, true) ? 0 : -EBUSY; | |
579 | ||
580 | lret = reservation_object_wait_timeout_rcu(bo->resv, true, true, MAX_SCHEDULE_TIMEOUT); | |
581 | if (!lret) | |
582 | return -EBUSY; | |
583 | else if (lret < 0) | |
584 | return lret; | |
585 | return 0; | |
1d7a5cbf TH |
586 | } |
587 | ||
588 | ret = ttm_bo_synccpu_write_grab | |
589 | (bo, !!(flags & drm_vmw_synccpu_dontblock)); | |
590 | if (unlikely(ret != 0)) | |
591 | return ret; | |
592 | ||
593 | ret = ttm_ref_object_add(tfile, &user_bo->prime.base, | |
594 | TTM_REF_SYNCCPU_WRITE, &existed); | |
595 | if (ret != 0 || existed) | |
596 | ttm_bo_synccpu_write_release(&user_bo->dma.base); | |
597 | ||
598 | return ret; | |
599 | } | |
600 | ||
601 | /** | |
602 | * vmw_user_dmabuf_synccpu_release - Release a previous grab for CPU access, | |
603 | * and unblock command submission on the buffer if blocked. | |
604 | * | |
605 | * @handle: Handle identifying the buffer object. | |
606 | * @tfile: Identifying the caller. | |
607 | * @flags: Flags indicating the type of release. | |
608 | */ | |
609 | static int vmw_user_dmabuf_synccpu_release(uint32_t handle, | |
610 | struct ttm_object_file *tfile, | |
611 | uint32_t flags) | |
612 | { | |
613 | if (!(flags & drm_vmw_synccpu_allow_cs)) | |
614 | return ttm_ref_object_base_unref(tfile, handle, | |
615 | TTM_REF_SYNCCPU_WRITE); | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
620 | /** | |
621 | * vmw_user_dmabuf_synccpu_release - ioctl function implementing the synccpu | |
622 | * functionality. | |
623 | * | |
624 | * @dev: Identifies the drm device. | |
625 | * @data: Pointer to the ioctl argument. | |
626 | * @file_priv: Identifies the caller. | |
627 | * | |
628 | * This function checks the ioctl arguments for validity and calls the | |
629 | * relevant synccpu functions. | |
630 | */ | |
631 | int vmw_user_dmabuf_synccpu_ioctl(struct drm_device *dev, void *data, | |
632 | struct drm_file *file_priv) | |
633 | { | |
634 | struct drm_vmw_synccpu_arg *arg = | |
635 | (struct drm_vmw_synccpu_arg *) data; | |
636 | struct vmw_dma_buffer *dma_buf; | |
637 | struct vmw_user_dma_buffer *user_bo; | |
638 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
54c12bc3 | 639 | struct ttm_base_object *buffer_base; |
1d7a5cbf TH |
640 | int ret; |
641 | ||
642 | if ((arg->flags & (drm_vmw_synccpu_read | drm_vmw_synccpu_write)) == 0 | |
643 | || (arg->flags & ~(drm_vmw_synccpu_read | drm_vmw_synccpu_write | | |
644 | drm_vmw_synccpu_dontblock | | |
645 | drm_vmw_synccpu_allow_cs)) != 0) { | |
646 | DRM_ERROR("Illegal synccpu flags.\n"); | |
647 | return -EINVAL; | |
648 | } | |
649 | ||
650 | switch (arg->op) { | |
651 | case drm_vmw_synccpu_grab: | |
54c12bc3 TH |
652 | ret = vmw_user_dmabuf_lookup(tfile, arg->handle, &dma_buf, |
653 | &buffer_base); | |
1d7a5cbf TH |
654 | if (unlikely(ret != 0)) |
655 | return ret; | |
656 | ||
657 | user_bo = container_of(dma_buf, struct vmw_user_dma_buffer, | |
658 | dma); | |
659 | ret = vmw_user_dmabuf_synccpu_grab(user_bo, tfile, arg->flags); | |
660 | vmw_dmabuf_unreference(&dma_buf); | |
54c12bc3 | 661 | ttm_base_object_unref(&buffer_base); |
1d7a5cbf TH |
662 | if (unlikely(ret != 0 && ret != -ERESTARTSYS && |
663 | ret != -EBUSY)) { | |
664 | DRM_ERROR("Failed synccpu grab on handle 0x%08x.\n", | |
665 | (unsigned int) arg->handle); | |
666 | return ret; | |
667 | } | |
668 | break; | |
669 | case drm_vmw_synccpu_release: | |
670 | ret = vmw_user_dmabuf_synccpu_release(arg->handle, tfile, | |
671 | arg->flags); | |
672 | if (unlikely(ret != 0)) { | |
673 | DRM_ERROR("Failed synccpu release on handle 0x%08x.\n", | |
674 | (unsigned int) arg->handle); | |
675 | return ret; | |
676 | } | |
677 | break; | |
678 | default: | |
679 | DRM_ERROR("Invalid synccpu operation.\n"); | |
680 | return -EINVAL; | |
681 | } | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
fb1d9738 JB |
686 | int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data, |
687 | struct drm_file *file_priv) | |
688 | { | |
689 | struct vmw_private *dev_priv = vmw_priv(dev); | |
690 | union drm_vmw_alloc_dmabuf_arg *arg = | |
691 | (union drm_vmw_alloc_dmabuf_arg *)data; | |
692 | struct drm_vmw_alloc_dmabuf_req *req = &arg->req; | |
693 | struct drm_vmw_dmabuf_rep *rep = &arg->rep; | |
c0951b79 TH |
694 | struct vmw_dma_buffer *dma_buf; |
695 | uint32_t handle; | |
fb1d9738 JB |
696 | int ret; |
697 | ||
294adf7d | 698 | ret = ttm_read_lock(&dev_priv->reservation_sem, true); |
c0951b79 | 699 | if (unlikely(ret != 0)) |
fb1d9738 | 700 | return ret; |
fb1d9738 | 701 | |
c0951b79 | 702 | ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile, |
54c12bc3 TH |
703 | req->size, false, &handle, &dma_buf, |
704 | NULL); | |
fb1d9738 | 705 | if (unlikely(ret != 0)) |
2f5993cc | 706 | goto out_no_dmabuf; |
fb1d9738 | 707 | |
c0951b79 | 708 | rep->handle = handle; |
72525b3f | 709 | rep->map_handle = drm_vma_node_offset_addr(&dma_buf->base.vma_node); |
c0951b79 TH |
710 | rep->cur_gmr_id = handle; |
711 | rep->cur_gmr_offset = 0; | |
712 | ||
713 | vmw_dmabuf_unreference(&dma_buf); | |
fb1d9738 | 714 | |
2f5993cc | 715 | out_no_dmabuf: |
294adf7d | 716 | ttm_read_unlock(&dev_priv->reservation_sem); |
fb1d9738 | 717 | |
2f5993cc | 718 | return ret; |
fb1d9738 JB |
719 | } |
720 | ||
721 | int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data, | |
722 | struct drm_file *file_priv) | |
723 | { | |
724 | struct drm_vmw_unref_dmabuf_arg *arg = | |
725 | (struct drm_vmw_unref_dmabuf_arg *)data; | |
726 | ||
727 | return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, | |
728 | arg->handle, | |
729 | TTM_REF_USAGE); | |
730 | } | |
731 | ||
fb1d9738 | 732 | int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, |
54c12bc3 TH |
733 | uint32_t handle, struct vmw_dma_buffer **out, |
734 | struct ttm_base_object **p_base) | |
fb1d9738 JB |
735 | { |
736 | struct vmw_user_dma_buffer *vmw_user_bo; | |
737 | struct ttm_base_object *base; | |
738 | ||
739 | base = ttm_base_object_lookup(tfile, handle); | |
740 | if (unlikely(base == NULL)) { | |
741 | printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n", | |
742 | (unsigned long)handle); | |
743 | return -ESRCH; | |
744 | } | |
745 | ||
c486d4f8 | 746 | if (unlikely(ttm_base_object_type(base) != ttm_buffer_type)) { |
fb1d9738 JB |
747 | ttm_base_object_unref(&base); |
748 | printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n", | |
749 | (unsigned long)handle); | |
750 | return -EINVAL; | |
751 | } | |
752 | ||
c486d4f8 TH |
753 | vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, |
754 | prime.base); | |
fb1d9738 | 755 | (void)ttm_bo_reference(&vmw_user_bo->dma.base); |
54c12bc3 TH |
756 | if (p_base) |
757 | *p_base = base; | |
758 | else | |
759 | ttm_base_object_unref(&base); | |
fb1d9738 JB |
760 | *out = &vmw_user_bo->dma; |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
c0951b79 | 765 | int vmw_user_dmabuf_reference(struct ttm_object_file *tfile, |
a97e2192 TH |
766 | struct vmw_dma_buffer *dma_buf, |
767 | uint32_t *handle) | |
c0951b79 TH |
768 | { |
769 | struct vmw_user_dma_buffer *user_bo; | |
770 | ||
771 | if (dma_buf->base.destroy != vmw_user_dmabuf_destroy) | |
772 | return -EINVAL; | |
773 | ||
774 | user_bo = container_of(dma_buf, struct vmw_user_dma_buffer, dma); | |
a97e2192 TH |
775 | |
776 | *handle = user_bo->prime.base.hash.key; | |
c486d4f8 TH |
777 | return ttm_ref_object_add(tfile, &user_bo->prime.base, |
778 | TTM_REF_USAGE, NULL); | |
c0951b79 TH |
779 | } |
780 | ||
fb1d9738 | 781 | /* |
65155b37 | 782 | * Stream management |
fb1d9738 JB |
783 | */ |
784 | ||
785 | static void vmw_stream_destroy(struct vmw_resource *res) | |
786 | { | |
787 | struct vmw_private *dev_priv = res->dev_priv; | |
788 | struct vmw_stream *stream; | |
789 | int ret; | |
790 | ||
791 | DRM_INFO("%s: unref\n", __func__); | |
792 | stream = container_of(res, struct vmw_stream, res); | |
793 | ||
794 | ret = vmw_overlay_unref(dev_priv, stream->stream_id); | |
795 | WARN_ON(ret != 0); | |
796 | } | |
797 | ||
798 | static int vmw_stream_init(struct vmw_private *dev_priv, | |
799 | struct vmw_stream *stream, | |
800 | void (*res_free) (struct vmw_resource *res)) | |
801 | { | |
802 | struct vmw_resource *res = &stream->res; | |
803 | int ret; | |
804 | ||
c0951b79 TH |
805 | ret = vmw_resource_init(dev_priv, res, false, res_free, |
806 | &vmw_stream_func); | |
fb1d9738 JB |
807 | |
808 | if (unlikely(ret != 0)) { | |
809 | if (res_free == NULL) | |
810 | kfree(stream); | |
811 | else | |
812 | res_free(&stream->res); | |
813 | return ret; | |
814 | } | |
815 | ||
816 | ret = vmw_overlay_claim(dev_priv, &stream->stream_id); | |
817 | if (ret) { | |
818 | vmw_resource_unreference(&res); | |
819 | return ret; | |
820 | } | |
821 | ||
822 | DRM_INFO("%s: claimed\n", __func__); | |
823 | ||
824 | vmw_resource_activate(&stream->res, vmw_stream_destroy); | |
825 | return 0; | |
826 | } | |
827 | ||
fb1d9738 JB |
828 | static void vmw_user_stream_free(struct vmw_resource *res) |
829 | { | |
830 | struct vmw_user_stream *stream = | |
831 | container_of(res, struct vmw_user_stream, stream.res); | |
414ee50b | 832 | struct vmw_private *dev_priv = res->dev_priv; |
fb1d9738 | 833 | |
cdad0521 | 834 | ttm_base_object_kfree(stream, base); |
414ee50b TH |
835 | ttm_mem_global_free(vmw_mem_glob(dev_priv), |
836 | vmw_user_stream_size); | |
fb1d9738 JB |
837 | } |
838 | ||
839 | /** | |
840 | * This function is called when user space has no more references on the | |
841 | * base object. It releases the base-object's reference on the resource object. | |
842 | */ | |
843 | ||
844 | static void vmw_user_stream_base_release(struct ttm_base_object **p_base) | |
845 | { | |
846 | struct ttm_base_object *base = *p_base; | |
847 | struct vmw_user_stream *stream = | |
848 | container_of(base, struct vmw_user_stream, base); | |
849 | struct vmw_resource *res = &stream->stream.res; | |
850 | ||
851 | *p_base = NULL; | |
852 | vmw_resource_unreference(&res); | |
853 | } | |
854 | ||
855 | int vmw_stream_unref_ioctl(struct drm_device *dev, void *data, | |
856 | struct drm_file *file_priv) | |
857 | { | |
858 | struct vmw_private *dev_priv = vmw_priv(dev); | |
859 | struct vmw_resource *res; | |
860 | struct vmw_user_stream *stream; | |
861 | struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data; | |
862 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
c0951b79 | 863 | struct idr *idr = &dev_priv->res_idr[vmw_res_stream]; |
fb1d9738 JB |
864 | int ret = 0; |
865 | ||
c0951b79 TH |
866 | |
867 | res = vmw_resource_lookup(dev_priv, idr, arg->stream_id); | |
fb1d9738 JB |
868 | if (unlikely(res == NULL)) |
869 | return -EINVAL; | |
870 | ||
871 | if (res->res_free != &vmw_user_stream_free) { | |
872 | ret = -EINVAL; | |
873 | goto out; | |
874 | } | |
875 | ||
876 | stream = container_of(res, struct vmw_user_stream, stream.res); | |
877 | if (stream->base.tfile != tfile) { | |
878 | ret = -EINVAL; | |
879 | goto out; | |
880 | } | |
881 | ||
882 | ttm_ref_object_base_unref(tfile, stream->base.hash.key, TTM_REF_USAGE); | |
883 | out: | |
884 | vmw_resource_unreference(&res); | |
885 | return ret; | |
886 | } | |
887 | ||
888 | int vmw_stream_claim_ioctl(struct drm_device *dev, void *data, | |
889 | struct drm_file *file_priv) | |
890 | { | |
891 | struct vmw_private *dev_priv = vmw_priv(dev); | |
414ee50b | 892 | struct vmw_user_stream *stream; |
fb1d9738 JB |
893 | struct vmw_resource *res; |
894 | struct vmw_resource *tmp; | |
895 | struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data; | |
896 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
897 | int ret; | |
898 | ||
414ee50b TH |
899 | /* |
900 | * Approximate idr memory usage with 128 bytes. It will be limited | |
901 | * by maximum number_of streams anyway? | |
902 | */ | |
903 | ||
904 | if (unlikely(vmw_user_stream_size == 0)) | |
905 | vmw_user_stream_size = ttm_round_pot(sizeof(*stream)) + 128; | |
906 | ||
294adf7d | 907 | ret = ttm_read_lock(&dev_priv->reservation_sem, true); |
414ee50b TH |
908 | if (unlikely(ret != 0)) |
909 | return ret; | |
910 | ||
911 | ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv), | |
912 | vmw_user_stream_size, | |
913 | false, true); | |
ee511a83 | 914 | ttm_read_unlock(&dev_priv->reservation_sem); |
414ee50b TH |
915 | if (unlikely(ret != 0)) { |
916 | if (ret != -ERESTARTSYS) | |
917 | DRM_ERROR("Out of graphics memory for stream" | |
918 | " creation.\n"); | |
414ee50b | 919 | |
ee511a83 TH |
920 | goto out_ret; |
921 | } | |
414ee50b TH |
922 | |
923 | stream = kmalloc(sizeof(*stream), GFP_KERNEL); | |
924 | if (unlikely(stream == NULL)) { | |
925 | ttm_mem_global_free(vmw_mem_glob(dev_priv), | |
926 | vmw_user_stream_size); | |
927 | ret = -ENOMEM; | |
ee511a83 | 928 | goto out_ret; |
414ee50b | 929 | } |
fb1d9738 JB |
930 | |
931 | res = &stream->stream.res; | |
932 | stream->base.shareable = false; | |
933 | stream->base.tfile = NULL; | |
934 | ||
414ee50b TH |
935 | /* |
936 | * From here on, the destructor takes over resource freeing. | |
937 | */ | |
938 | ||
fb1d9738 JB |
939 | ret = vmw_stream_init(dev_priv, &stream->stream, vmw_user_stream_free); |
940 | if (unlikely(ret != 0)) | |
ee511a83 | 941 | goto out_ret; |
fb1d9738 JB |
942 | |
943 | tmp = vmw_resource_reference(res); | |
944 | ret = ttm_base_object_init(tfile, &stream->base, false, VMW_RES_STREAM, | |
945 | &vmw_user_stream_base_release, NULL); | |
946 | ||
947 | if (unlikely(ret != 0)) { | |
948 | vmw_resource_unreference(&tmp); | |
949 | goto out_err; | |
950 | } | |
951 | ||
952 | arg->stream_id = res->id; | |
953 | out_err: | |
954 | vmw_resource_unreference(&res); | |
ee511a83 | 955 | out_ret: |
fb1d9738 JB |
956 | return ret; |
957 | } | |
958 | ||
959 | int vmw_user_stream_lookup(struct vmw_private *dev_priv, | |
960 | struct ttm_object_file *tfile, | |
961 | uint32_t *inout_id, struct vmw_resource **out) | |
962 | { | |
963 | struct vmw_user_stream *stream; | |
964 | struct vmw_resource *res; | |
965 | int ret; | |
966 | ||
c0951b79 TH |
967 | res = vmw_resource_lookup(dev_priv, &dev_priv->res_idr[vmw_res_stream], |
968 | *inout_id); | |
fb1d9738 JB |
969 | if (unlikely(res == NULL)) |
970 | return -EINVAL; | |
971 | ||
972 | if (res->res_free != &vmw_user_stream_free) { | |
973 | ret = -EINVAL; | |
974 | goto err_ref; | |
975 | } | |
976 | ||
977 | stream = container_of(res, struct vmw_user_stream, stream.res); | |
978 | if (stream->base.tfile != tfile) { | |
979 | ret = -EPERM; | |
980 | goto err_ref; | |
981 | } | |
982 | ||
983 | *inout_id = stream->stream.stream_id; | |
984 | *out = res; | |
985 | return 0; | |
986 | err_ref: | |
987 | vmw_resource_unreference(&res); | |
988 | return ret; | |
989 | } | |
5e1782d2 DA |
990 | |
991 | ||
d69d51d7 TH |
992 | /** |
993 | * vmw_dumb_create - Create a dumb kms buffer | |
994 | * | |
995 | * @file_priv: Pointer to a struct drm_file identifying the caller. | |
996 | * @dev: Pointer to the drm device. | |
997 | * @args: Pointer to a struct drm_mode_create_dumb structure | |
998 | * | |
999 | * This is a driver callback for the core drm create_dumb functionality. | |
1000 | * Note that this is very similar to the vmw_dmabuf_alloc ioctl, except | |
1001 | * that the arguments have a different format. | |
1002 | */ | |
5e1782d2 DA |
1003 | int vmw_dumb_create(struct drm_file *file_priv, |
1004 | struct drm_device *dev, | |
1005 | struct drm_mode_create_dumb *args) | |
1006 | { | |
1007 | struct vmw_private *dev_priv = vmw_priv(dev); | |
d69d51d7 | 1008 | struct vmw_dma_buffer *dma_buf; |
5e1782d2 DA |
1009 | int ret; |
1010 | ||
1011 | args->pitch = args->width * ((args->bpp + 7) / 8); | |
1012 | args->size = args->pitch * args->height; | |
1013 | ||
294adf7d | 1014 | ret = ttm_read_lock(&dev_priv->reservation_sem, true); |
d69d51d7 | 1015 | if (unlikely(ret != 0)) |
5e1782d2 | 1016 | return ret; |
5e1782d2 | 1017 | |
d69d51d7 TH |
1018 | ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile, |
1019 | args->size, false, &args->handle, | |
54c12bc3 | 1020 | &dma_buf, NULL); |
5e1782d2 | 1021 | if (unlikely(ret != 0)) |
d69d51d7 | 1022 | goto out_no_dmabuf; |
5e1782d2 | 1023 | |
d69d51d7 | 1024 | vmw_dmabuf_unreference(&dma_buf); |
5e1782d2 | 1025 | out_no_dmabuf: |
294adf7d | 1026 | ttm_read_unlock(&dev_priv->reservation_sem); |
5e1782d2 DA |
1027 | return ret; |
1028 | } | |
1029 | ||
d69d51d7 TH |
1030 | /** |
1031 | * vmw_dumb_map_offset - Return the address space offset of a dumb buffer | |
1032 | * | |
1033 | * @file_priv: Pointer to a struct drm_file identifying the caller. | |
1034 | * @dev: Pointer to the drm device. | |
1035 | * @handle: Handle identifying the dumb buffer. | |
1036 | * @offset: The address space offset returned. | |
1037 | * | |
1038 | * This is a driver callback for the core drm dumb_map_offset functionality. | |
1039 | */ | |
5e1782d2 DA |
1040 | int vmw_dumb_map_offset(struct drm_file *file_priv, |
1041 | struct drm_device *dev, uint32_t handle, | |
1042 | uint64_t *offset) | |
1043 | { | |
1044 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; | |
1045 | struct vmw_dma_buffer *out_buf; | |
1046 | int ret; | |
1047 | ||
54c12bc3 | 1048 | ret = vmw_user_dmabuf_lookup(tfile, handle, &out_buf, NULL); |
5e1782d2 DA |
1049 | if (ret != 0) |
1050 | return -EINVAL; | |
1051 | ||
72525b3f | 1052 | *offset = drm_vma_node_offset_addr(&out_buf->base.vma_node); |
5e1782d2 DA |
1053 | vmw_dmabuf_unreference(&out_buf); |
1054 | return 0; | |
1055 | } | |
1056 | ||
d69d51d7 TH |
1057 | /** |
1058 | * vmw_dumb_destroy - Destroy a dumb boffer | |
1059 | * | |
1060 | * @file_priv: Pointer to a struct drm_file identifying the caller. | |
1061 | * @dev: Pointer to the drm device. | |
1062 | * @handle: Handle identifying the dumb buffer. | |
1063 | * | |
1064 | * This is a driver callback for the core drm dumb_destroy functionality. | |
1065 | */ | |
5e1782d2 DA |
1066 | int vmw_dumb_destroy(struct drm_file *file_priv, |
1067 | struct drm_device *dev, | |
1068 | uint32_t handle) | |
1069 | { | |
1070 | return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, | |
1071 | handle, TTM_REF_USAGE); | |
1072 | } | |
c0951b79 TH |
1073 | |
1074 | /** | |
1075 | * vmw_resource_buf_alloc - Allocate a backup buffer for a resource. | |
1076 | * | |
1077 | * @res: The resource for which to allocate a backup buffer. | |
1078 | * @interruptible: Whether any sleeps during allocation should be | |
1079 | * performed while interruptible. | |
1080 | */ | |
1081 | static int vmw_resource_buf_alloc(struct vmw_resource *res, | |
1082 | bool interruptible) | |
1083 | { | |
1084 | unsigned long size = | |
1085 | (res->backup_size + PAGE_SIZE - 1) & PAGE_MASK; | |
1086 | struct vmw_dma_buffer *backup; | |
1087 | int ret; | |
1088 | ||
1089 | if (likely(res->backup)) { | |
1090 | BUG_ON(res->backup->base.num_pages * PAGE_SIZE < size); | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | backup = kzalloc(sizeof(*backup), GFP_KERNEL); | |
1095 | if (unlikely(backup == NULL)) | |
1096 | return -ENOMEM; | |
1097 | ||
1098 | ret = vmw_dmabuf_init(res->dev_priv, backup, res->backup_size, | |
1099 | res->func->backup_placement, | |
1100 | interruptible, | |
1101 | &vmw_dmabuf_bo_free); | |
1102 | if (unlikely(ret != 0)) | |
1103 | goto out_no_dmabuf; | |
1104 | ||
1105 | res->backup = backup; | |
1106 | ||
1107 | out_no_dmabuf: | |
1108 | return ret; | |
1109 | } | |
1110 | ||
1111 | /** | |
1112 | * vmw_resource_do_validate - Make a resource up-to-date and visible | |
1113 | * to the device. | |
1114 | * | |
1115 | * @res: The resource to make visible to the device. | |
1116 | * @val_buf: Information about a buffer possibly | |
1117 | * containing backup data if a bind operation is needed. | |
1118 | * | |
1119 | * On hardware resource shortage, this function returns -EBUSY and | |
1120 | * should be retried once resources have been freed up. | |
1121 | */ | |
1122 | static int vmw_resource_do_validate(struct vmw_resource *res, | |
1123 | struct ttm_validate_buffer *val_buf) | |
1124 | { | |
1125 | int ret = 0; | |
1126 | const struct vmw_res_func *func = res->func; | |
1127 | ||
1128 | if (unlikely(res->id == -1)) { | |
1129 | ret = func->create(res); | |
1130 | if (unlikely(ret != 0)) | |
1131 | return ret; | |
1132 | } | |
1133 | ||
1134 | if (func->bind && | |
1135 | ((func->needs_backup && list_empty(&res->mob_head) && | |
1136 | val_buf->bo != NULL) || | |
1137 | (!func->needs_backup && val_buf->bo != NULL))) { | |
1138 | ret = func->bind(res, val_buf); | |
1139 | if (unlikely(ret != 0)) | |
1140 | goto out_bind_failed; | |
1141 | if (func->needs_backup) | |
1142 | list_add_tail(&res->mob_head, &res->backup->res_list); | |
1143 | } | |
1144 | ||
1145 | /* | |
1146 | * Only do this on write operations, and move to | |
1147 | * vmw_resource_unreserve if it can be called after | |
1148 | * backup buffers have been unreserved. Otherwise | |
1149 | * sort out locking. | |
1150 | */ | |
1151 | res->res_dirty = true; | |
1152 | ||
1153 | return 0; | |
1154 | ||
1155 | out_bind_failed: | |
1156 | func->destroy(res); | |
1157 | ||
1158 | return ret; | |
1159 | } | |
1160 | ||
1161 | /** | |
1162 | * vmw_resource_unreserve - Unreserve a resource previously reserved for | |
1163 | * command submission. | |
1164 | * | |
1165 | * @res: Pointer to the struct vmw_resource to unreserve. | |
d80efd5c | 1166 | * @switch_backup: Backup buffer has been switched. |
c0951b79 | 1167 | * @new_backup: Pointer to new backup buffer if command submission |
d80efd5c TH |
1168 | * switched. May be NULL. |
1169 | * @new_backup_offset: New backup offset if @switch_backup is true. | |
c0951b79 TH |
1170 | * |
1171 | * Currently unreserving a resource means putting it back on the device's | |
1172 | * resource lru list, so that it can be evicted if necessary. | |
1173 | */ | |
1174 | void vmw_resource_unreserve(struct vmw_resource *res, | |
d80efd5c | 1175 | bool switch_backup, |
c0951b79 TH |
1176 | struct vmw_dma_buffer *new_backup, |
1177 | unsigned long new_backup_offset) | |
1178 | { | |
1179 | struct vmw_private *dev_priv = res->dev_priv; | |
1180 | ||
1181 | if (!list_empty(&res->lru_head)) | |
1182 | return; | |
1183 | ||
d80efd5c | 1184 | if (switch_backup && new_backup != res->backup) { |
c0951b79 | 1185 | if (res->backup) { |
8bd4ce56 | 1186 | lockdep_assert_held(&res->backup->base.resv->lock.base); |
c0951b79 TH |
1187 | list_del_init(&res->mob_head); |
1188 | vmw_dmabuf_unreference(&res->backup); | |
1189 | } | |
1190 | ||
d80efd5c TH |
1191 | if (new_backup) { |
1192 | res->backup = vmw_dmabuf_reference(new_backup); | |
1193 | lockdep_assert_held(&new_backup->base.resv->lock.base); | |
1194 | list_add_tail(&res->mob_head, &new_backup->res_list); | |
1195 | } else { | |
1196 | res->backup = NULL; | |
1197 | } | |
c0951b79 | 1198 | } |
d80efd5c | 1199 | if (switch_backup) |
c0951b79 TH |
1200 | res->backup_offset = new_backup_offset; |
1201 | ||
ed93394c | 1202 | if (!res->func->may_evict || res->id == -1 || res->pin_count) |
c0951b79 TH |
1203 | return; |
1204 | ||
1205 | write_lock(&dev_priv->resource_lock); | |
1206 | list_add_tail(&res->lru_head, | |
1207 | &res->dev_priv->res_lru[res->func->res_type]); | |
1208 | write_unlock(&dev_priv->resource_lock); | |
1209 | } | |
1210 | ||
1211 | /** | |
1212 | * vmw_resource_check_buffer - Check whether a backup buffer is needed | |
1213 | * for a resource and in that case, allocate | |
1214 | * one, reserve and validate it. | |
1215 | * | |
1216 | * @res: The resource for which to allocate a backup buffer. | |
1217 | * @interruptible: Whether any sleeps during allocation should be | |
1218 | * performed while interruptible. | |
1219 | * @val_buf: On successful return contains data about the | |
1220 | * reserved and validated backup buffer. | |
1221 | */ | |
ecff665f ML |
1222 | static int |
1223 | vmw_resource_check_buffer(struct vmw_resource *res, | |
ecff665f ML |
1224 | bool interruptible, |
1225 | struct ttm_validate_buffer *val_buf) | |
c0951b79 TH |
1226 | { |
1227 | struct list_head val_list; | |
1228 | bool backup_dirty = false; | |
1229 | int ret; | |
1230 | ||
1231 | if (unlikely(res->backup == NULL)) { | |
1232 | ret = vmw_resource_buf_alloc(res, interruptible); | |
1233 | if (unlikely(ret != 0)) | |
1234 | return ret; | |
1235 | } | |
1236 | ||
1237 | INIT_LIST_HEAD(&val_list); | |
1238 | val_buf->bo = ttm_bo_reference(&res->backup->base); | |
ae9c0af2 | 1239 | val_buf->shared = false; |
c0951b79 | 1240 | list_add_tail(&val_buf->head, &val_list); |
aa35071c | 1241 | ret = ttm_eu_reserve_buffers(NULL, &val_list, interruptible, NULL); |
c0951b79 TH |
1242 | if (unlikely(ret != 0)) |
1243 | goto out_no_reserve; | |
1244 | ||
1245 | if (res->func->needs_backup && list_empty(&res->mob_head)) | |
1246 | return 0; | |
1247 | ||
1248 | backup_dirty = res->backup_dirty; | |
1249 | ret = ttm_bo_validate(&res->backup->base, | |
1250 | res->func->backup_placement, | |
97a875cb | 1251 | true, false); |
c0951b79 TH |
1252 | |
1253 | if (unlikely(ret != 0)) | |
1254 | goto out_no_validate; | |
1255 | ||
1256 | return 0; | |
1257 | ||
1258 | out_no_validate: | |
ac49251b | 1259 | ttm_eu_backoff_reservation(NULL, &val_list); |
c0951b79 TH |
1260 | out_no_reserve: |
1261 | ttm_bo_unref(&val_buf->bo); | |
1262 | if (backup_dirty) | |
1263 | vmw_dmabuf_unreference(&res->backup); | |
1264 | ||
1265 | return ret; | |
1266 | } | |
1267 | ||
1268 | /** | |
1269 | * vmw_resource_reserve - Reserve a resource for command submission | |
1270 | * | |
1271 | * @res: The resource to reserve. | |
1272 | * | |
1273 | * This function takes the resource off the LRU list and make sure | |
1274 | * a backup buffer is present for guest-backed resources. However, | |
1275 | * the buffer may not be bound to the resource at this point. | |
1276 | * | |
1277 | */ | |
1a4b172a TH |
1278 | int vmw_resource_reserve(struct vmw_resource *res, bool interruptible, |
1279 | bool no_backup) | |
c0951b79 TH |
1280 | { |
1281 | struct vmw_private *dev_priv = res->dev_priv; | |
1282 | int ret; | |
1283 | ||
1284 | write_lock(&dev_priv->resource_lock); | |
1285 | list_del_init(&res->lru_head); | |
1286 | write_unlock(&dev_priv->resource_lock); | |
1287 | ||
1288 | if (res->func->needs_backup && res->backup == NULL && | |
1289 | !no_backup) { | |
1a4b172a | 1290 | ret = vmw_resource_buf_alloc(res, interruptible); |
d80efd5c TH |
1291 | if (unlikely(ret != 0)) { |
1292 | DRM_ERROR("Failed to allocate a backup buffer " | |
1293 | "of size %lu. bytes\n", | |
1294 | (unsigned long) res->backup_size); | |
c0951b79 | 1295 | return ret; |
d80efd5c | 1296 | } |
c0951b79 TH |
1297 | } |
1298 | ||
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | /** | |
1303 | * vmw_resource_backoff_reservation - Unreserve and unreference a | |
1304 | * backup buffer | |
1305 | *. | |
1306 | * @val_buf: Backup buffer information. | |
1307 | */ | |
ecff665f | 1308 | static void |
ac49251b | 1309 | vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf) |
c0951b79 TH |
1310 | { |
1311 | struct list_head val_list; | |
1312 | ||
1313 | if (likely(val_buf->bo == NULL)) | |
1314 | return; | |
1315 | ||
1316 | INIT_LIST_HEAD(&val_list); | |
1317 | list_add_tail(&val_buf->head, &val_list); | |
ac49251b | 1318 | ttm_eu_backoff_reservation(NULL, &val_list); |
c0951b79 TH |
1319 | ttm_bo_unref(&val_buf->bo); |
1320 | } | |
1321 | ||
1322 | /** | |
1323 | * vmw_resource_do_evict - Evict a resource, and transfer its data | |
1324 | * to a backup buffer. | |
1325 | * | |
1326 | * @res: The resource to evict. | |
ea029c28 | 1327 | * @interruptible: Whether to wait interruptible. |
c0951b79 | 1328 | */ |
b9eb1a61 | 1329 | static int vmw_resource_do_evict(struct vmw_resource *res, bool interruptible) |
c0951b79 TH |
1330 | { |
1331 | struct ttm_validate_buffer val_buf; | |
1332 | const struct vmw_res_func *func = res->func; | |
1333 | int ret; | |
1334 | ||
1335 | BUG_ON(!func->may_evict); | |
1336 | ||
1337 | val_buf.bo = NULL; | |
ae9c0af2 | 1338 | val_buf.shared = false; |
ac49251b | 1339 | ret = vmw_resource_check_buffer(res, interruptible, &val_buf); |
c0951b79 TH |
1340 | if (unlikely(ret != 0)) |
1341 | return ret; | |
1342 | ||
1343 | if (unlikely(func->unbind != NULL && | |
1344 | (!func->needs_backup || !list_empty(&res->mob_head)))) { | |
1345 | ret = func->unbind(res, res->res_dirty, &val_buf); | |
1346 | if (unlikely(ret != 0)) | |
1347 | goto out_no_unbind; | |
1348 | list_del_init(&res->mob_head); | |
1349 | } | |
1350 | ret = func->destroy(res); | |
1351 | res->backup_dirty = true; | |
1352 | res->res_dirty = false; | |
1353 | out_no_unbind: | |
ac49251b | 1354 | vmw_resource_backoff_reservation(&val_buf); |
c0951b79 TH |
1355 | |
1356 | return ret; | |
1357 | } | |
1358 | ||
1359 | ||
1360 | /** | |
1361 | * vmw_resource_validate - Make a resource up-to-date and visible | |
1362 | * to the device. | |
1363 | * | |
1364 | * @res: The resource to make visible to the device. | |
1365 | * | |
1366 | * On succesful return, any backup DMA buffer pointed to by @res->backup will | |
1367 | * be reserved and validated. | |
1368 | * On hardware resource shortage, this function will repeatedly evict | |
1369 | * resources of the same type until the validation succeeds. | |
1370 | */ | |
1371 | int vmw_resource_validate(struct vmw_resource *res) | |
1372 | { | |
1373 | int ret; | |
1374 | struct vmw_resource *evict_res; | |
1375 | struct vmw_private *dev_priv = res->dev_priv; | |
1376 | struct list_head *lru_list = &dev_priv->res_lru[res->func->res_type]; | |
1377 | struct ttm_validate_buffer val_buf; | |
ea029c28 | 1378 | unsigned err_count = 0; |
c0951b79 | 1379 | |
d80efd5c | 1380 | if (!res->func->create) |
c0951b79 TH |
1381 | return 0; |
1382 | ||
1383 | val_buf.bo = NULL; | |
ae9c0af2 | 1384 | val_buf.shared = false; |
c0951b79 TH |
1385 | if (res->backup) |
1386 | val_buf.bo = &res->backup->base; | |
1387 | do { | |
1388 | ret = vmw_resource_do_validate(res, &val_buf); | |
1389 | if (likely(ret != -EBUSY)) | |
1390 | break; | |
1391 | ||
1392 | write_lock(&dev_priv->resource_lock); | |
1393 | if (list_empty(lru_list) || !res->func->may_evict) { | |
ea029c28 | 1394 | DRM_ERROR("Out of device device resources " |
c0951b79 TH |
1395 | "for %s.\n", res->func->type_name); |
1396 | ret = -EBUSY; | |
1397 | write_unlock(&dev_priv->resource_lock); | |
1398 | break; | |
1399 | } | |
1400 | ||
1401 | evict_res = vmw_resource_reference | |
1402 | (list_first_entry(lru_list, struct vmw_resource, | |
1403 | lru_head)); | |
1404 | list_del_init(&evict_res->lru_head); | |
1405 | ||
1406 | write_unlock(&dev_priv->resource_lock); | |
ea029c28 TH |
1407 | |
1408 | ret = vmw_resource_do_evict(evict_res, true); | |
1409 | if (unlikely(ret != 0)) { | |
1410 | write_lock(&dev_priv->resource_lock); | |
1411 | list_add_tail(&evict_res->lru_head, lru_list); | |
1412 | write_unlock(&dev_priv->resource_lock); | |
1413 | if (ret == -ERESTARTSYS || | |
1414 | ++err_count > VMW_RES_EVICT_ERR_COUNT) { | |
1415 | vmw_resource_unreference(&evict_res); | |
1416 | goto out_no_validate; | |
1417 | } | |
1418 | } | |
1419 | ||
c0951b79 TH |
1420 | vmw_resource_unreference(&evict_res); |
1421 | } while (1); | |
1422 | ||
1423 | if (unlikely(ret != 0)) | |
1424 | goto out_no_validate; | |
1425 | else if (!res->func->needs_backup && res->backup) { | |
1426 | list_del_init(&res->mob_head); | |
1427 | vmw_dmabuf_unreference(&res->backup); | |
1428 | } | |
1429 | ||
1430 | return 0; | |
1431 | ||
1432 | out_no_validate: | |
1433 | return ret; | |
1434 | } | |
1435 | ||
1436 | /** | |
1437 | * vmw_fence_single_bo - Utility function to fence a single TTM buffer | |
1438 | * object without unreserving it. | |
1439 | * | |
1440 | * @bo: Pointer to the struct ttm_buffer_object to fence. | |
1441 | * @fence: Pointer to the fence. If NULL, this function will | |
1442 | * insert a fence into the command stream.. | |
1443 | * | |
1444 | * Contrary to the ttm_eu version of this function, it takes only | |
1445 | * a single buffer object instead of a list, and it also doesn't | |
1446 | * unreserve the buffer object, which needs to be done separately. | |
1447 | */ | |
1448 | void vmw_fence_single_bo(struct ttm_buffer_object *bo, | |
1449 | struct vmw_fence_obj *fence) | |
1450 | { | |
1451 | struct ttm_bo_device *bdev = bo->bdev; | |
f2c24b83 | 1452 | |
c0951b79 TH |
1453 | struct vmw_private *dev_priv = |
1454 | container_of(bdev, struct vmw_private, bdev); | |
1455 | ||
2298e804 | 1456 | if (fence == NULL) { |
c0951b79 | 1457 | vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL); |
f2c24b83 ML |
1458 | reservation_object_add_excl_fence(bo->resv, &fence->base); |
1459 | fence_put(&fence->base); | |
2298e804 | 1460 | } else |
f2c24b83 | 1461 | reservation_object_add_excl_fence(bo->resv, &fence->base); |
c0951b79 TH |
1462 | } |
1463 | ||
1464 | /** | |
1465 | * vmw_resource_move_notify - TTM move_notify_callback | |
1466 | * | |
fd11a3c0 SY |
1467 | * @bo: The TTM buffer object about to move. |
1468 | * @mem: The struct ttm_mem_reg indicating to what memory | |
1469 | * region the move is taking place. | |
c0951b79 | 1470 | * |
f468911f TH |
1471 | * Evicts the Guest Backed hardware resource if the backup |
1472 | * buffer is being moved out of MOB memory. | |
1473 | * Note that this function should not race with the resource | |
1474 | * validation code as long as it accesses only members of struct | |
1475 | * resource that remain static while bo::res is !NULL and | |
1476 | * while we have @bo reserved. struct resource::backup is *not* a | |
1477 | * static member. The resource validation code will take care | |
1478 | * to set @bo::res to NULL, while having @bo reserved when the | |
1479 | * buffer is no longer bound to the resource, so @bo:res can be | |
1480 | * used to determine whether there is a need to unbind and whether | |
1481 | * it is safe to unbind. | |
c0951b79 TH |
1482 | */ |
1483 | void vmw_resource_move_notify(struct ttm_buffer_object *bo, | |
1484 | struct ttm_mem_reg *mem) | |
1485 | { | |
f468911f TH |
1486 | struct vmw_dma_buffer *dma_buf; |
1487 | ||
1488 | if (mem == NULL) | |
1489 | return; | |
1490 | ||
1491 | if (bo->destroy != vmw_dmabuf_bo_free && | |
1492 | bo->destroy != vmw_user_dmabuf_destroy) | |
1493 | return; | |
1494 | ||
1495 | dma_buf = container_of(bo, struct vmw_dma_buffer, base); | |
1496 | ||
1497 | if (mem->mem_type != VMW_PL_MOB) { | |
1498 | struct vmw_resource *res, *n; | |
f468911f TH |
1499 | struct ttm_validate_buffer val_buf; |
1500 | ||
1501 | val_buf.bo = bo; | |
ae9c0af2 | 1502 | val_buf.shared = false; |
f468911f TH |
1503 | |
1504 | list_for_each_entry_safe(res, n, &dma_buf->res_list, mob_head) { | |
1505 | ||
1506 | if (unlikely(res->func->unbind == NULL)) | |
1507 | continue; | |
1508 | ||
1509 | (void) res->func->unbind(res, true, &val_buf); | |
1510 | res->backup_dirty = true; | |
1511 | res->res_dirty = false; | |
1512 | list_del_init(&res->mob_head); | |
1513 | } | |
1514 | ||
f468911f | 1515 | (void) ttm_bo_wait(bo, false, false, false); |
f468911f | 1516 | } |
c0951b79 TH |
1517 | } |
1518 | ||
fd11a3c0 SY |
1519 | |
1520 | ||
1521 | /** | |
1522 | * vmw_query_readback_all - Read back cached query states | |
1523 | * | |
1524 | * @dx_query_mob: Buffer containing the DX query MOB | |
1525 | * | |
1526 | * Read back cached states from the device if they exist. This function | |
1527 | * assumings binding_mutex is held. | |
1528 | */ | |
1529 | int vmw_query_readback_all(struct vmw_dma_buffer *dx_query_mob) | |
1530 | { | |
1531 | struct vmw_resource *dx_query_ctx; | |
1532 | struct vmw_private *dev_priv; | |
1533 | struct { | |
1534 | SVGA3dCmdHeader header; | |
1535 | SVGA3dCmdDXReadbackAllQuery body; | |
1536 | } *cmd; | |
1537 | ||
1538 | ||
1539 | /* No query bound, so do nothing */ | |
1540 | if (!dx_query_mob || !dx_query_mob->dx_query_ctx) | |
1541 | return 0; | |
1542 | ||
1543 | dx_query_ctx = dx_query_mob->dx_query_ctx; | |
1544 | dev_priv = dx_query_ctx->dev_priv; | |
1545 | ||
1546 | cmd = vmw_fifo_reserve_dx(dev_priv, sizeof(*cmd), dx_query_ctx->id); | |
1547 | if (unlikely(cmd == NULL)) { | |
1548 | DRM_ERROR("Failed reserving FIFO space for " | |
1549 | "query MOB read back.\n"); | |
1550 | return -ENOMEM; | |
1551 | } | |
1552 | ||
1553 | cmd->header.id = SVGA_3D_CMD_DX_READBACK_ALL_QUERY; | |
1554 | cmd->header.size = sizeof(cmd->body); | |
1555 | cmd->body.cid = dx_query_ctx->id; | |
1556 | ||
1557 | vmw_fifo_commit(dev_priv, sizeof(*cmd)); | |
1558 | ||
1559 | /* Triggers a rebind the next time affected context is bound */ | |
1560 | dx_query_mob->dx_query_ctx = NULL; | |
1561 | ||
1562 | return 0; | |
1563 | } | |
1564 | ||
1565 | ||
1566 | ||
1567 | /** | |
1568 | * vmw_query_move_notify - Read back cached query states | |
1569 | * | |
1570 | * @bo: The TTM buffer object about to move. | |
1571 | * @mem: The memory region @bo is moving to. | |
1572 | * | |
1573 | * Called before the query MOB is swapped out to read back cached query | |
1574 | * states from the device. | |
1575 | */ | |
1576 | void vmw_query_move_notify(struct ttm_buffer_object *bo, | |
1577 | struct ttm_mem_reg *mem) | |
1578 | { | |
1579 | struct vmw_dma_buffer *dx_query_mob; | |
1580 | struct ttm_bo_device *bdev = bo->bdev; | |
1581 | struct vmw_private *dev_priv; | |
1582 | ||
1583 | ||
1584 | dev_priv = container_of(bdev, struct vmw_private, bdev); | |
1585 | ||
1586 | mutex_lock(&dev_priv->binding_mutex); | |
1587 | ||
1588 | dx_query_mob = container_of(bo, struct vmw_dma_buffer, base); | |
1589 | if (mem == NULL || !dx_query_mob || !dx_query_mob->dx_query_ctx) { | |
1590 | mutex_unlock(&dev_priv->binding_mutex); | |
1591 | return; | |
1592 | } | |
1593 | ||
1594 | /* If BO is being moved from MOB to system memory */ | |
1595 | if (mem->mem_type == TTM_PL_SYSTEM && bo->mem.mem_type == VMW_PL_MOB) { | |
1596 | struct vmw_fence_obj *fence; | |
1597 | ||
1598 | (void) vmw_query_readback_all(dx_query_mob); | |
1599 | mutex_unlock(&dev_priv->binding_mutex); | |
1600 | ||
1601 | /* Create a fence and attach the BO to it */ | |
1602 | (void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL); | |
1603 | vmw_fence_single_bo(bo, fence); | |
1604 | ||
1605 | if (fence != NULL) | |
1606 | vmw_fence_obj_unreference(&fence); | |
1607 | ||
1608 | (void) ttm_bo_wait(bo, false, false, false); | |
1609 | } else | |
1610 | mutex_unlock(&dev_priv->binding_mutex); | |
1611 | ||
1612 | } | |
1613 | ||
c0951b79 TH |
1614 | /** |
1615 | * vmw_resource_needs_backup - Return whether a resource needs a backup buffer. | |
1616 | * | |
1617 | * @res: The resource being queried. | |
1618 | */ | |
1619 | bool vmw_resource_needs_backup(const struct vmw_resource *res) | |
1620 | { | |
1621 | return res->func->needs_backup; | |
1622 | } | |
1623 | ||
1624 | /** | |
1625 | * vmw_resource_evict_type - Evict all resources of a specific type | |
1626 | * | |
1627 | * @dev_priv: Pointer to a device private struct | |
1628 | * @type: The resource type to evict | |
1629 | * | |
1630 | * To avoid thrashing starvation or as part of the hibernation sequence, | |
ea029c28 | 1631 | * try to evict all evictable resources of a specific type. |
c0951b79 TH |
1632 | */ |
1633 | static void vmw_resource_evict_type(struct vmw_private *dev_priv, | |
1634 | enum vmw_res_type type) | |
1635 | { | |
1636 | struct list_head *lru_list = &dev_priv->res_lru[type]; | |
1637 | struct vmw_resource *evict_res; | |
ea029c28 TH |
1638 | unsigned err_count = 0; |
1639 | int ret; | |
c0951b79 TH |
1640 | |
1641 | do { | |
1642 | write_lock(&dev_priv->resource_lock); | |
1643 | ||
1644 | if (list_empty(lru_list)) | |
1645 | goto out_unlock; | |
1646 | ||
1647 | evict_res = vmw_resource_reference( | |
1648 | list_first_entry(lru_list, struct vmw_resource, | |
1649 | lru_head)); | |
1650 | list_del_init(&evict_res->lru_head); | |
1651 | write_unlock(&dev_priv->resource_lock); | |
ea029c28 TH |
1652 | |
1653 | ret = vmw_resource_do_evict(evict_res, false); | |
1654 | if (unlikely(ret != 0)) { | |
1655 | write_lock(&dev_priv->resource_lock); | |
1656 | list_add_tail(&evict_res->lru_head, lru_list); | |
1657 | write_unlock(&dev_priv->resource_lock); | |
1658 | if (++err_count > VMW_RES_EVICT_ERR_COUNT) { | |
1659 | vmw_resource_unreference(&evict_res); | |
1660 | return; | |
1661 | } | |
1662 | } | |
1663 | ||
c0951b79 TH |
1664 | vmw_resource_unreference(&evict_res); |
1665 | } while (1); | |
1666 | ||
1667 | out_unlock: | |
1668 | write_unlock(&dev_priv->resource_lock); | |
1669 | } | |
1670 | ||
1671 | /** | |
1672 | * vmw_resource_evict_all - Evict all evictable resources | |
1673 | * | |
1674 | * @dev_priv: Pointer to a device private struct | |
1675 | * | |
1676 | * To avoid thrashing starvation or as part of the hibernation sequence, | |
1677 | * evict all evictable resources. In particular this means that all | |
1678 | * guest-backed resources that are registered with the device are | |
1679 | * evicted and the OTable becomes clean. | |
1680 | */ | |
1681 | void vmw_resource_evict_all(struct vmw_private *dev_priv) | |
1682 | { | |
1683 | enum vmw_res_type type; | |
1684 | ||
1685 | mutex_lock(&dev_priv->cmdbuf_mutex); | |
1686 | ||
1687 | for (type = 0; type < vmw_res_max; ++type) | |
1688 | vmw_resource_evict_type(dev_priv, type); | |
1689 | ||
1690 | mutex_unlock(&dev_priv->cmdbuf_mutex); | |
1691 | } | |
ed93394c TH |
1692 | |
1693 | /** | |
1694 | * vmw_resource_pin - Add a pin reference on a resource | |
1695 | * | |
1696 | * @res: The resource to add a pin reference on | |
1697 | * | |
1698 | * This function adds a pin reference, and if needed validates the resource. | |
1699 | * Having a pin reference means that the resource can never be evicted, and | |
1700 | * its id will never change as long as there is a pin reference. | |
1701 | * This function returns 0 on success and a negative error code on failure. | |
1702 | */ | |
1a4b172a | 1703 | int vmw_resource_pin(struct vmw_resource *res, bool interruptible) |
ed93394c TH |
1704 | { |
1705 | struct vmw_private *dev_priv = res->dev_priv; | |
1706 | int ret; | |
1707 | ||
1a4b172a | 1708 | ttm_write_lock(&dev_priv->reservation_sem, interruptible); |
ed93394c | 1709 | mutex_lock(&dev_priv->cmdbuf_mutex); |
1a4b172a | 1710 | ret = vmw_resource_reserve(res, interruptible, false); |
ed93394c TH |
1711 | if (ret) |
1712 | goto out_no_reserve; | |
1713 | ||
1714 | if (res->pin_count == 0) { | |
459d0fa7 | 1715 | struct vmw_dma_buffer *vbo = NULL; |
ed93394c TH |
1716 | |
1717 | if (res->backup) { | |
459d0fa7 TH |
1718 | vbo = res->backup; |
1719 | ||
1a4b172a TH |
1720 | ttm_bo_reserve(&vbo->base, interruptible, false, false, |
1721 | NULL); | |
459d0fa7 TH |
1722 | if (!vbo->pin_count) { |
1723 | ret = ttm_bo_validate | |
1724 | (&vbo->base, | |
1725 | res->func->backup_placement, | |
1a4b172a | 1726 | interruptible, false); |
459d0fa7 TH |
1727 | if (ret) { |
1728 | ttm_bo_unreserve(&vbo->base); | |
1729 | goto out_no_validate; | |
1730 | } | |
ed93394c TH |
1731 | } |
1732 | ||
1733 | /* Do we really need to pin the MOB as well? */ | |
459d0fa7 | 1734 | vmw_bo_pin_reserved(vbo, true); |
ed93394c TH |
1735 | } |
1736 | ret = vmw_resource_validate(res); | |
459d0fa7 TH |
1737 | if (vbo) |
1738 | ttm_bo_unreserve(&vbo->base); | |
ed93394c TH |
1739 | if (ret) |
1740 | goto out_no_validate; | |
1741 | } | |
1742 | res->pin_count++; | |
1743 | ||
1744 | out_no_validate: | |
d80efd5c | 1745 | vmw_resource_unreserve(res, false, NULL, 0UL); |
ed93394c TH |
1746 | out_no_reserve: |
1747 | mutex_unlock(&dev_priv->cmdbuf_mutex); | |
1748 | ttm_write_unlock(&dev_priv->reservation_sem); | |
1749 | ||
1750 | return ret; | |
1751 | } | |
1752 | ||
1753 | /** | |
1754 | * vmw_resource_unpin - Remove a pin reference from a resource | |
1755 | * | |
1756 | * @res: The resource to remove a pin reference from | |
1757 | * | |
1758 | * Having a pin reference means that the resource can never be evicted, and | |
1759 | * its id will never change as long as there is a pin reference. | |
1760 | */ | |
1761 | void vmw_resource_unpin(struct vmw_resource *res) | |
1762 | { | |
1763 | struct vmw_private *dev_priv = res->dev_priv; | |
1764 | int ret; | |
1765 | ||
1766 | ttm_read_lock(&dev_priv->reservation_sem, false); | |
1767 | mutex_lock(&dev_priv->cmdbuf_mutex); | |
1768 | ||
1a4b172a | 1769 | ret = vmw_resource_reserve(res, false, true); |
ed93394c TH |
1770 | WARN_ON(ret); |
1771 | ||
1772 | WARN_ON(res->pin_count == 0); | |
1773 | if (--res->pin_count == 0 && res->backup) { | |
459d0fa7 | 1774 | struct vmw_dma_buffer *vbo = res->backup; |
ed93394c | 1775 | |
459d0fa7 TH |
1776 | ttm_bo_reserve(&vbo->base, false, false, false, NULL); |
1777 | vmw_bo_pin_reserved(vbo, false); | |
1778 | ttm_bo_unreserve(&vbo->base); | |
ed93394c TH |
1779 | } |
1780 | ||
d80efd5c | 1781 | vmw_resource_unreserve(res, false, NULL, 0UL); |
ed93394c TH |
1782 | |
1783 | mutex_unlock(&dev_priv->cmdbuf_mutex); | |
1784 | ttm_read_unlock(&dev_priv->reservation_sem); | |
1785 | } | |
d80efd5c TH |
1786 | |
1787 | /** | |
1788 | * vmw_res_type - Return the resource type | |
1789 | * | |
1790 | * @res: Pointer to the resource | |
1791 | */ | |
1792 | enum vmw_res_type vmw_res_type(const struct vmw_resource *res) | |
1793 | { | |
1794 | return res->func->res_type; | |
1795 | } |