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1 /**************************************************************************
2 *
3 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
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"
29 #include "vmwgfx_resource_priv.h"
30 #include "vmwgfx_so.h"
31 #include "vmwgfx_binding.h"
32 #include <ttm/ttm_placement.h>
33 #include "device_include/svga3d_surfacedefs.h"
34
35
36 /**
37 * struct vmw_user_surface - User-space visible surface resource
38 *
39 * @base: The TTM base object handling user-space visibility.
40 * @srf: The surface metadata.
41 * @size: TTM accounting size for the surface.
42 * @master: master of the creating client. Used for security check.
43 */
44 struct vmw_user_surface {
45 struct ttm_prime_object prime;
46 struct vmw_surface srf;
47 uint32_t size;
48 struct drm_master *master;
49 struct ttm_base_object *backup_base;
50 };
51
52 /**
53 * struct vmw_surface_offset - Backing store mip level offset info
54 *
55 * @face: Surface face.
56 * @mip: Mip level.
57 * @bo_offset: Offset into backing store of this mip level.
58 *
59 */
60 struct vmw_surface_offset {
61 uint32_t face;
62 uint32_t mip;
63 uint32_t bo_offset;
64 };
65
66 static void vmw_user_surface_free(struct vmw_resource *res);
67 static struct vmw_resource *
68 vmw_user_surface_base_to_res(struct ttm_base_object *base);
69 static int vmw_legacy_srf_bind(struct vmw_resource *res,
70 struct ttm_validate_buffer *val_buf);
71 static int vmw_legacy_srf_unbind(struct vmw_resource *res,
72 bool readback,
73 struct ttm_validate_buffer *val_buf);
74 static int vmw_legacy_srf_create(struct vmw_resource *res);
75 static int vmw_legacy_srf_destroy(struct vmw_resource *res);
76 static int vmw_gb_surface_create(struct vmw_resource *res);
77 static int vmw_gb_surface_bind(struct vmw_resource *res,
78 struct ttm_validate_buffer *val_buf);
79 static int vmw_gb_surface_unbind(struct vmw_resource *res,
80 bool readback,
81 struct ttm_validate_buffer *val_buf);
82 static int vmw_gb_surface_destroy(struct vmw_resource *res);
83
84
85 static const struct vmw_user_resource_conv user_surface_conv = {
86 .object_type = VMW_RES_SURFACE,
87 .base_obj_to_res = vmw_user_surface_base_to_res,
88 .res_free = vmw_user_surface_free
89 };
90
91 const struct vmw_user_resource_conv *user_surface_converter =
92 &user_surface_conv;
93
94
95 static uint64_t vmw_user_surface_size;
96
97 static const struct vmw_res_func vmw_legacy_surface_func = {
98 .res_type = vmw_res_surface,
99 .needs_backup = false,
100 .may_evict = true,
101 .type_name = "legacy surfaces",
102 .backup_placement = &vmw_srf_placement,
103 .create = &vmw_legacy_srf_create,
104 .destroy = &vmw_legacy_srf_destroy,
105 .bind = &vmw_legacy_srf_bind,
106 .unbind = &vmw_legacy_srf_unbind
107 };
108
109 static const struct vmw_res_func vmw_gb_surface_func = {
110 .res_type = vmw_res_surface,
111 .needs_backup = true,
112 .may_evict = true,
113 .type_name = "guest backed surfaces",
114 .backup_placement = &vmw_mob_placement,
115 .create = vmw_gb_surface_create,
116 .destroy = vmw_gb_surface_destroy,
117 .bind = vmw_gb_surface_bind,
118 .unbind = vmw_gb_surface_unbind
119 };
120
121 /**
122 * struct vmw_surface_dma - SVGA3D DMA command
123 */
124 struct vmw_surface_dma {
125 SVGA3dCmdHeader header;
126 SVGA3dCmdSurfaceDMA body;
127 SVGA3dCopyBox cb;
128 SVGA3dCmdSurfaceDMASuffix suffix;
129 };
130
131 /**
132 * struct vmw_surface_define - SVGA3D Surface Define command
133 */
134 struct vmw_surface_define {
135 SVGA3dCmdHeader header;
136 SVGA3dCmdDefineSurface body;
137 };
138
139 /**
140 * struct vmw_surface_destroy - SVGA3D Surface Destroy command
141 */
142 struct vmw_surface_destroy {
143 SVGA3dCmdHeader header;
144 SVGA3dCmdDestroySurface body;
145 };
146
147
148 /**
149 * vmw_surface_dma_size - Compute fifo size for a dma command.
150 *
151 * @srf: Pointer to a struct vmw_surface
152 *
153 * Computes the required size for a surface dma command for backup or
154 * restoration of the surface represented by @srf.
155 */
156 static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
157 {
158 return srf->num_sizes * sizeof(struct vmw_surface_dma);
159 }
160
161
162 /**
163 * vmw_surface_define_size - Compute fifo size for a surface define command.
164 *
165 * @srf: Pointer to a struct vmw_surface
166 *
167 * Computes the required size for a surface define command for the definition
168 * of the surface represented by @srf.
169 */
170 static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
171 {
172 return sizeof(struct vmw_surface_define) + srf->num_sizes *
173 sizeof(SVGA3dSize);
174 }
175
176
177 /**
178 * vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
179 *
180 * Computes the required size for a surface destroy command for the destruction
181 * of a hw surface.
182 */
183 static inline uint32_t vmw_surface_destroy_size(void)
184 {
185 return sizeof(struct vmw_surface_destroy);
186 }
187
188 /**
189 * vmw_surface_destroy_encode - Encode a surface_destroy command.
190 *
191 * @id: The surface id
192 * @cmd_space: Pointer to memory area in which the commands should be encoded.
193 */
194 static void vmw_surface_destroy_encode(uint32_t id,
195 void *cmd_space)
196 {
197 struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
198 cmd_space;
199
200 cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
201 cmd->header.size = sizeof(cmd->body);
202 cmd->body.sid = id;
203 }
204
205 /**
206 * vmw_surface_define_encode - Encode a surface_define command.
207 *
208 * @srf: Pointer to a struct vmw_surface object.
209 * @cmd_space: Pointer to memory area in which the commands should be encoded.
210 */
211 static void vmw_surface_define_encode(const struct vmw_surface *srf,
212 void *cmd_space)
213 {
214 struct vmw_surface_define *cmd = (struct vmw_surface_define *)
215 cmd_space;
216 struct drm_vmw_size *src_size;
217 SVGA3dSize *cmd_size;
218 uint32_t cmd_len;
219 int i;
220
221 cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
222
223 cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
224 cmd->header.size = cmd_len;
225 cmd->body.sid = srf->res.id;
226 cmd->body.surfaceFlags = srf->flags;
227 cmd->body.format = srf->format;
228 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
229 cmd->body.face[i].numMipLevels = srf->mip_levels[i];
230
231 cmd += 1;
232 cmd_size = (SVGA3dSize *) cmd;
233 src_size = srf->sizes;
234
235 for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
236 cmd_size->width = src_size->width;
237 cmd_size->height = src_size->height;
238 cmd_size->depth = src_size->depth;
239 }
240 }
241
242 /**
243 * vmw_surface_dma_encode - Encode a surface_dma command.
244 *
245 * @srf: Pointer to a struct vmw_surface object.
246 * @cmd_space: Pointer to memory area in which the commands should be encoded.
247 * @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
248 * should be placed or read from.
249 * @to_surface: Boolean whether to DMA to the surface or from the surface.
250 */
251 static void vmw_surface_dma_encode(struct vmw_surface *srf,
252 void *cmd_space,
253 const SVGAGuestPtr *ptr,
254 bool to_surface)
255 {
256 uint32_t i;
257 struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
258 const struct svga3d_surface_desc *desc =
259 svga3dsurface_get_desc(srf->format);
260
261 for (i = 0; i < srf->num_sizes; ++i) {
262 SVGA3dCmdHeader *header = &cmd->header;
263 SVGA3dCmdSurfaceDMA *body = &cmd->body;
264 SVGA3dCopyBox *cb = &cmd->cb;
265 SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
266 const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
267 const struct drm_vmw_size *cur_size = &srf->sizes[i];
268
269 header->id = SVGA_3D_CMD_SURFACE_DMA;
270 header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
271
272 body->guest.ptr = *ptr;
273 body->guest.ptr.offset += cur_offset->bo_offset;
274 body->guest.pitch = svga3dsurface_calculate_pitch(desc,
275 cur_size);
276 body->host.sid = srf->res.id;
277 body->host.face = cur_offset->face;
278 body->host.mipmap = cur_offset->mip;
279 body->transfer = ((to_surface) ? SVGA3D_WRITE_HOST_VRAM :
280 SVGA3D_READ_HOST_VRAM);
281 cb->x = 0;
282 cb->y = 0;
283 cb->z = 0;
284 cb->srcx = 0;
285 cb->srcy = 0;
286 cb->srcz = 0;
287 cb->w = cur_size->width;
288 cb->h = cur_size->height;
289 cb->d = cur_size->depth;
290
291 suffix->suffixSize = sizeof(*suffix);
292 suffix->maximumOffset =
293 svga3dsurface_get_image_buffer_size(desc, cur_size,
294 body->guest.pitch);
295 suffix->flags.discard = 0;
296 suffix->flags.unsynchronized = 0;
297 suffix->flags.reserved = 0;
298 ++cmd;
299 }
300 };
301
302
303 /**
304 * vmw_hw_surface_destroy - destroy a Device surface
305 *
306 * @res: Pointer to a struct vmw_resource embedded in a struct
307 * vmw_surface.
308 *
309 * Destroys a the device surface associated with a struct vmw_surface if
310 * any, and adjusts accounting and resource count accordingly.
311 */
312 static void vmw_hw_surface_destroy(struct vmw_resource *res)
313 {
314
315 struct vmw_private *dev_priv = res->dev_priv;
316 struct vmw_surface *srf;
317 void *cmd;
318
319 if (res->func->destroy == vmw_gb_surface_destroy) {
320 (void) vmw_gb_surface_destroy(res);
321 return;
322 }
323
324 if (res->id != -1) {
325
326 cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
327 if (unlikely(cmd == NULL)) {
328 DRM_ERROR("Failed reserving FIFO space for surface "
329 "destruction.\n");
330 return;
331 }
332
333 vmw_surface_destroy_encode(res->id, cmd);
334 vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
335
336 /*
337 * used_memory_size_atomic, or separate lock
338 * to avoid taking dev_priv::cmdbuf_mutex in
339 * the destroy path.
340 */
341
342 mutex_lock(&dev_priv->cmdbuf_mutex);
343 srf = vmw_res_to_srf(res);
344 dev_priv->used_memory_size -= res->backup_size;
345 mutex_unlock(&dev_priv->cmdbuf_mutex);
346 }
347 vmw_fifo_resource_dec(dev_priv);
348 }
349
350 /**
351 * vmw_legacy_srf_create - Create a device surface as part of the
352 * resource validation process.
353 *
354 * @res: Pointer to a struct vmw_surface.
355 *
356 * If the surface doesn't have a hw id.
357 *
358 * Returns -EBUSY if there wasn't sufficient device resources to
359 * complete the validation. Retry after freeing up resources.
360 *
361 * May return other errors if the kernel is out of guest resources.
362 */
363 static int vmw_legacy_srf_create(struct vmw_resource *res)
364 {
365 struct vmw_private *dev_priv = res->dev_priv;
366 struct vmw_surface *srf;
367 uint32_t submit_size;
368 uint8_t *cmd;
369 int ret;
370
371 if (likely(res->id != -1))
372 return 0;
373
374 srf = vmw_res_to_srf(res);
375 if (unlikely(dev_priv->used_memory_size + res->backup_size >=
376 dev_priv->memory_size))
377 return -EBUSY;
378
379 /*
380 * Alloc id for the resource.
381 */
382
383 ret = vmw_resource_alloc_id(res);
384 if (unlikely(ret != 0)) {
385 DRM_ERROR("Failed to allocate a surface id.\n");
386 goto out_no_id;
387 }
388
389 if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) {
390 ret = -EBUSY;
391 goto out_no_fifo;
392 }
393
394 /*
395 * Encode surface define- commands.
396 */
397
398 submit_size = vmw_surface_define_size(srf);
399 cmd = vmw_fifo_reserve(dev_priv, submit_size);
400 if (unlikely(cmd == NULL)) {
401 DRM_ERROR("Failed reserving FIFO space for surface "
402 "creation.\n");
403 ret = -ENOMEM;
404 goto out_no_fifo;
405 }
406
407 vmw_surface_define_encode(srf, cmd);
408 vmw_fifo_commit(dev_priv, submit_size);
409 /*
410 * Surface memory usage accounting.
411 */
412
413 dev_priv->used_memory_size += res->backup_size;
414 return 0;
415
416 out_no_fifo:
417 vmw_resource_release_id(res);
418 out_no_id:
419 return ret;
420 }
421
422 /**
423 * vmw_legacy_srf_dma - Copy backup data to or from a legacy surface.
424 *
425 * @res: Pointer to a struct vmw_res embedded in a struct
426 * vmw_surface.
427 * @val_buf: Pointer to a struct ttm_validate_buffer containing
428 * information about the backup buffer.
429 * @bind: Boolean wether to DMA to the surface.
430 *
431 * Transfer backup data to or from a legacy surface as part of the
432 * validation process.
433 * May return other errors if the kernel is out of guest resources.
434 * The backup buffer will be fenced or idle upon successful completion,
435 * and if the surface needs persistent backup storage, the backup buffer
436 * will also be returned reserved iff @bind is true.
437 */
438 static int vmw_legacy_srf_dma(struct vmw_resource *res,
439 struct ttm_validate_buffer *val_buf,
440 bool bind)
441 {
442 SVGAGuestPtr ptr;
443 struct vmw_fence_obj *fence;
444 uint32_t submit_size;
445 struct vmw_surface *srf = vmw_res_to_srf(res);
446 uint8_t *cmd;
447 struct vmw_private *dev_priv = res->dev_priv;
448
449 BUG_ON(val_buf->bo == NULL);
450
451 submit_size = vmw_surface_dma_size(srf);
452 cmd = vmw_fifo_reserve(dev_priv, submit_size);
453 if (unlikely(cmd == NULL)) {
454 DRM_ERROR("Failed reserving FIFO space for surface "
455 "DMA.\n");
456 return -ENOMEM;
457 }
458 vmw_bo_get_guest_ptr(val_buf->bo, &ptr);
459 vmw_surface_dma_encode(srf, cmd, &ptr, bind);
460
461 vmw_fifo_commit(dev_priv, submit_size);
462
463 /*
464 * Create a fence object and fence the backup buffer.
465 */
466
467 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
468 &fence, NULL);
469
470 vmw_fence_single_bo(val_buf->bo, fence);
471
472 if (likely(fence != NULL))
473 vmw_fence_obj_unreference(&fence);
474
475 return 0;
476 }
477
478 /**
479 * vmw_legacy_srf_bind - Perform a legacy surface bind as part of the
480 * surface validation process.
481 *
482 * @res: Pointer to a struct vmw_res embedded in a struct
483 * vmw_surface.
484 * @val_buf: Pointer to a struct ttm_validate_buffer containing
485 * information about the backup buffer.
486 *
487 * This function will copy backup data to the surface if the
488 * backup buffer is dirty.
489 */
490 static int vmw_legacy_srf_bind(struct vmw_resource *res,
491 struct ttm_validate_buffer *val_buf)
492 {
493 if (!res->backup_dirty)
494 return 0;
495
496 return vmw_legacy_srf_dma(res, val_buf, true);
497 }
498
499
500 /**
501 * vmw_legacy_srf_unbind - Perform a legacy surface unbind as part of the
502 * surface eviction process.
503 *
504 * @res: Pointer to a struct vmw_res embedded in a struct
505 * vmw_surface.
506 * @val_buf: Pointer to a struct ttm_validate_buffer containing
507 * information about the backup buffer.
508 *
509 * This function will copy backup data from the surface.
510 */
511 static int vmw_legacy_srf_unbind(struct vmw_resource *res,
512 bool readback,
513 struct ttm_validate_buffer *val_buf)
514 {
515 if (unlikely(readback))
516 return vmw_legacy_srf_dma(res, val_buf, false);
517 return 0;
518 }
519
520 /**
521 * vmw_legacy_srf_destroy - Destroy a device surface as part of a
522 * resource eviction process.
523 *
524 * @res: Pointer to a struct vmw_res embedded in a struct
525 * vmw_surface.
526 */
527 static int vmw_legacy_srf_destroy(struct vmw_resource *res)
528 {
529 struct vmw_private *dev_priv = res->dev_priv;
530 uint32_t submit_size;
531 uint8_t *cmd;
532
533 BUG_ON(res->id == -1);
534
535 /*
536 * Encode the dma- and surface destroy commands.
537 */
538
539 submit_size = vmw_surface_destroy_size();
540 cmd = vmw_fifo_reserve(dev_priv, submit_size);
541 if (unlikely(cmd == NULL)) {
542 DRM_ERROR("Failed reserving FIFO space for surface "
543 "eviction.\n");
544 return -ENOMEM;
545 }
546
547 vmw_surface_destroy_encode(res->id, cmd);
548 vmw_fifo_commit(dev_priv, submit_size);
549
550 /*
551 * Surface memory usage accounting.
552 */
553
554 dev_priv->used_memory_size -= res->backup_size;
555
556 /*
557 * Release the surface ID.
558 */
559
560 vmw_resource_release_id(res);
561
562 return 0;
563 }
564
565
566 /**
567 * vmw_surface_init - initialize a struct vmw_surface
568 *
569 * @dev_priv: Pointer to a device private struct.
570 * @srf: Pointer to the struct vmw_surface to initialize.
571 * @res_free: Pointer to a resource destructor used to free
572 * the object.
573 */
574 static int vmw_surface_init(struct vmw_private *dev_priv,
575 struct vmw_surface *srf,
576 void (*res_free) (struct vmw_resource *res))
577 {
578 int ret;
579 struct vmw_resource *res = &srf->res;
580
581 BUG_ON(res_free == NULL);
582 if (!dev_priv->has_mob)
583 vmw_fifo_resource_inc(dev_priv);
584 ret = vmw_resource_init(dev_priv, res, true, res_free,
585 (dev_priv->has_mob) ? &vmw_gb_surface_func :
586 &vmw_legacy_surface_func);
587
588 if (unlikely(ret != 0)) {
589 if (!dev_priv->has_mob)
590 vmw_fifo_resource_dec(dev_priv);
591 res_free(res);
592 return ret;
593 }
594
595 /*
596 * The surface won't be visible to hardware until a
597 * surface validate.
598 */
599
600 INIT_LIST_HEAD(&srf->view_list);
601 vmw_resource_activate(res, vmw_hw_surface_destroy);
602 return ret;
603 }
604
605 /**
606 * vmw_user_surface_base_to_res - TTM base object to resource converter for
607 * user visible surfaces
608 *
609 * @base: Pointer to a TTM base object
610 *
611 * Returns the struct vmw_resource embedded in a struct vmw_surface
612 * for the user-visible object identified by the TTM base object @base.
613 */
614 static struct vmw_resource *
615 vmw_user_surface_base_to_res(struct ttm_base_object *base)
616 {
617 return &(container_of(base, struct vmw_user_surface,
618 prime.base)->srf.res);
619 }
620
621 /**
622 * vmw_user_surface_free - User visible surface resource destructor
623 *
624 * @res: A struct vmw_resource embedded in a struct vmw_surface.
625 */
626 static void vmw_user_surface_free(struct vmw_resource *res)
627 {
628 struct vmw_surface *srf = vmw_res_to_srf(res);
629 struct vmw_user_surface *user_srf =
630 container_of(srf, struct vmw_user_surface, srf);
631 struct vmw_private *dev_priv = srf->res.dev_priv;
632 uint32_t size = user_srf->size;
633
634 if (user_srf->master)
635 drm_master_put(&user_srf->master);
636 kfree(srf->offsets);
637 kfree(srf->sizes);
638 kfree(srf->snooper.image);
639 ttm_prime_object_kfree(user_srf, prime);
640 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
641 }
642
643 /**
644 * vmw_user_surface_free - User visible surface TTM base object destructor
645 *
646 * @p_base: Pointer to a pointer to a TTM base object
647 * embedded in a struct vmw_user_surface.
648 *
649 * Drops the base object's reference on its resource, and the
650 * pointer pointed to by *p_base is set to NULL.
651 */
652 static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
653 {
654 struct ttm_base_object *base = *p_base;
655 struct vmw_user_surface *user_srf =
656 container_of(base, struct vmw_user_surface, prime.base);
657 struct vmw_resource *res = &user_srf->srf.res;
658
659 *p_base = NULL;
660 ttm_base_object_unref(&user_srf->backup_base);
661 vmw_resource_unreference(&res);
662 }
663
664 /**
665 * vmw_user_surface_destroy_ioctl - Ioctl function implementing
666 * the user surface destroy functionality.
667 *
668 * @dev: Pointer to a struct drm_device.
669 * @data: Pointer to data copied from / to user-space.
670 * @file_priv: Pointer to a drm file private structure.
671 */
672 int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
673 struct drm_file *file_priv)
674 {
675 struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
676 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
677
678 return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
679 }
680
681 /**
682 * vmw_user_surface_define_ioctl - Ioctl function implementing
683 * the user surface define functionality.
684 *
685 * @dev: Pointer to a struct drm_device.
686 * @data: Pointer to data copied from / to user-space.
687 * @file_priv: Pointer to a drm file private structure.
688 */
689 int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
690 struct drm_file *file_priv)
691 {
692 struct vmw_private *dev_priv = vmw_priv(dev);
693 struct vmw_user_surface *user_srf;
694 struct vmw_surface *srf;
695 struct vmw_resource *res;
696 struct vmw_resource *tmp;
697 union drm_vmw_surface_create_arg *arg =
698 (union drm_vmw_surface_create_arg *)data;
699 struct drm_vmw_surface_create_req *req = &arg->req;
700 struct drm_vmw_surface_arg *rep = &arg->rep;
701 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
702 struct drm_vmw_size __user *user_sizes;
703 int ret;
704 int i, j;
705 uint32_t cur_bo_offset;
706 struct drm_vmw_size *cur_size;
707 struct vmw_surface_offset *cur_offset;
708 uint32_t num_sizes;
709 uint32_t size;
710 const struct svga3d_surface_desc *desc;
711
712 if (unlikely(vmw_user_surface_size == 0))
713 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
714 128;
715
716 num_sizes = 0;
717 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
718 num_sizes += req->mip_levels[i];
719
720 if (num_sizes > DRM_VMW_MAX_SURFACE_FACES *
721 DRM_VMW_MAX_MIP_LEVELS)
722 return -EINVAL;
723
724 size = vmw_user_surface_size + 128 +
725 ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
726 ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
727
728
729 desc = svga3dsurface_get_desc(req->format);
730 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
731 DRM_ERROR("Invalid surface format for surface creation.\n");
732 DRM_ERROR("Format requested is: %d\n", req->format);
733 return -EINVAL;
734 }
735
736 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
737 if (unlikely(ret != 0))
738 return ret;
739
740 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
741 size, false, true);
742 if (unlikely(ret != 0)) {
743 if (ret != -ERESTARTSYS)
744 DRM_ERROR("Out of graphics memory for surface"
745 " creation.\n");
746 goto out_unlock;
747 }
748
749 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
750 if (unlikely(user_srf == NULL)) {
751 ret = -ENOMEM;
752 goto out_no_user_srf;
753 }
754
755 srf = &user_srf->srf;
756 res = &srf->res;
757
758 srf->flags = req->flags;
759 srf->format = req->format;
760 srf->scanout = req->scanout;
761
762 memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
763 srf->num_sizes = num_sizes;
764 user_srf->size = size;
765
766 srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
767 if (unlikely(srf->sizes == NULL)) {
768 ret = -ENOMEM;
769 goto out_no_sizes;
770 }
771 srf->offsets = kmalloc(srf->num_sizes * sizeof(*srf->offsets),
772 GFP_KERNEL);
773 if (unlikely(srf->sizes == NULL)) {
774 ret = -ENOMEM;
775 goto out_no_offsets;
776 }
777
778 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
779 req->size_addr;
780
781 ret = copy_from_user(srf->sizes, user_sizes,
782 srf->num_sizes * sizeof(*srf->sizes));
783 if (unlikely(ret != 0)) {
784 ret = -EFAULT;
785 goto out_no_copy;
786 }
787
788 srf->base_size = *srf->sizes;
789 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
790 srf->multisample_count = 0;
791
792 cur_bo_offset = 0;
793 cur_offset = srf->offsets;
794 cur_size = srf->sizes;
795
796 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
797 for (j = 0; j < srf->mip_levels[i]; ++j) {
798 uint32_t stride = svga3dsurface_calculate_pitch
799 (desc, cur_size);
800
801 cur_offset->face = i;
802 cur_offset->mip = j;
803 cur_offset->bo_offset = cur_bo_offset;
804 cur_bo_offset += svga3dsurface_get_image_buffer_size
805 (desc, cur_size, stride);
806 ++cur_offset;
807 ++cur_size;
808 }
809 }
810 res->backup_size = cur_bo_offset;
811 if (srf->scanout &&
812 srf->num_sizes == 1 &&
813 srf->sizes[0].width == 64 &&
814 srf->sizes[0].height == 64 &&
815 srf->format == SVGA3D_A8R8G8B8) {
816
817 srf->snooper.image = kmalloc(64 * 64 * 4, GFP_KERNEL);
818 /* clear the image */
819 if (srf->snooper.image) {
820 memset(srf->snooper.image, 0x00, 64 * 64 * 4);
821 } else {
822 DRM_ERROR("Failed to allocate cursor_image\n");
823 ret = -ENOMEM;
824 goto out_no_copy;
825 }
826 } else {
827 srf->snooper.image = NULL;
828 }
829 srf->snooper.crtc = NULL;
830
831 user_srf->prime.base.shareable = false;
832 user_srf->prime.base.tfile = NULL;
833 if (drm_is_primary_client(file_priv))
834 user_srf->master = drm_master_get(file_priv->master);
835
836 /**
837 * From this point, the generic resource management functions
838 * destroy the object on failure.
839 */
840
841 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
842 if (unlikely(ret != 0))
843 goto out_unlock;
844
845 /*
846 * A gb-aware client referencing a shared surface will
847 * expect a backup buffer to be present.
848 */
849 if (dev_priv->has_mob && req->shareable) {
850 uint32_t backup_handle;
851
852 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
853 res->backup_size,
854 true,
855 &backup_handle,
856 &res->backup,
857 &user_srf->backup_base);
858 if (unlikely(ret != 0)) {
859 vmw_resource_unreference(&res);
860 goto out_unlock;
861 }
862 }
863
864 tmp = vmw_resource_reference(&srf->res);
865 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
866 req->shareable, VMW_RES_SURFACE,
867 &vmw_user_surface_base_release, NULL);
868
869 if (unlikely(ret != 0)) {
870 vmw_resource_unreference(&tmp);
871 vmw_resource_unreference(&res);
872 goto out_unlock;
873 }
874
875 rep->sid = user_srf->prime.base.hash.key;
876 vmw_resource_unreference(&res);
877
878 ttm_read_unlock(&dev_priv->reservation_sem);
879 return 0;
880 out_no_copy:
881 kfree(srf->offsets);
882 out_no_offsets:
883 kfree(srf->sizes);
884 out_no_sizes:
885 ttm_prime_object_kfree(user_srf, prime);
886 out_no_user_srf:
887 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
888 out_unlock:
889 ttm_read_unlock(&dev_priv->reservation_sem);
890 return ret;
891 }
892
893
894 static int
895 vmw_surface_handle_reference(struct vmw_private *dev_priv,
896 struct drm_file *file_priv,
897 uint32_t u_handle,
898 enum drm_vmw_handle_type handle_type,
899 struct ttm_base_object **base_p)
900 {
901 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
902 struct vmw_user_surface *user_srf;
903 uint32_t handle;
904 struct ttm_base_object *base;
905 int ret;
906
907 if (handle_type == DRM_VMW_HANDLE_PRIME) {
908 ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
909 if (unlikely(ret != 0))
910 return ret;
911 } else {
912 if (unlikely(drm_is_render_client(file_priv))) {
913 DRM_ERROR("Render client refused legacy "
914 "surface reference.\n");
915 return -EACCES;
916 }
917 if (ACCESS_ONCE(vmw_fpriv(file_priv)->locked_master)) {
918 DRM_ERROR("Locked master refused legacy "
919 "surface reference.\n");
920 return -EACCES;
921 }
922
923 handle = u_handle;
924 }
925
926 ret = -EINVAL;
927 base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
928 if (unlikely(base == NULL)) {
929 DRM_ERROR("Could not find surface to reference.\n");
930 goto out_no_lookup;
931 }
932
933 if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
934 DRM_ERROR("Referenced object is not a surface.\n");
935 goto out_bad_resource;
936 }
937
938 if (handle_type != DRM_VMW_HANDLE_PRIME) {
939 user_srf = container_of(base, struct vmw_user_surface,
940 prime.base);
941
942 /*
943 * Make sure the surface creator has the same
944 * authenticating master.
945 */
946 if (drm_is_primary_client(file_priv) &&
947 user_srf->master != file_priv->master) {
948 DRM_ERROR("Trying to reference surface outside of"
949 " master domain.\n");
950 ret = -EACCES;
951 goto out_bad_resource;
952 }
953
954 ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
955 if (unlikely(ret != 0)) {
956 DRM_ERROR("Could not add a reference to a surface.\n");
957 goto out_bad_resource;
958 }
959 }
960
961 *base_p = base;
962 return 0;
963
964 out_bad_resource:
965 ttm_base_object_unref(&base);
966 out_no_lookup:
967 if (handle_type == DRM_VMW_HANDLE_PRIME)
968 (void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
969
970 return ret;
971 }
972
973 /**
974 * vmw_user_surface_define_ioctl - Ioctl function implementing
975 * the user surface reference functionality.
976 *
977 * @dev: Pointer to a struct drm_device.
978 * @data: Pointer to data copied from / to user-space.
979 * @file_priv: Pointer to a drm file private structure.
980 */
981 int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
982 struct drm_file *file_priv)
983 {
984 struct vmw_private *dev_priv = vmw_priv(dev);
985 union drm_vmw_surface_reference_arg *arg =
986 (union drm_vmw_surface_reference_arg *)data;
987 struct drm_vmw_surface_arg *req = &arg->req;
988 struct drm_vmw_surface_create_req *rep = &arg->rep;
989 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
990 struct vmw_surface *srf;
991 struct vmw_user_surface *user_srf;
992 struct drm_vmw_size __user *user_sizes;
993 struct ttm_base_object *base;
994 int ret;
995
996 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
997 req->handle_type, &base);
998 if (unlikely(ret != 0))
999 return ret;
1000
1001 user_srf = container_of(base, struct vmw_user_surface, prime.base);
1002 srf = &user_srf->srf;
1003
1004 rep->flags = srf->flags;
1005 rep->format = srf->format;
1006 memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
1007 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
1008 rep->size_addr;
1009
1010 if (user_sizes)
1011 ret = copy_to_user(user_sizes, &srf->base_size,
1012 sizeof(srf->base_size));
1013 if (unlikely(ret != 0)) {
1014 DRM_ERROR("copy_to_user failed %p %u\n",
1015 user_sizes, srf->num_sizes);
1016 ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
1017 ret = -EFAULT;
1018 }
1019
1020 ttm_base_object_unref(&base);
1021
1022 return ret;
1023 }
1024
1025 /**
1026 * vmw_surface_define_encode - Encode a surface_define command.
1027 *
1028 * @srf: Pointer to a struct vmw_surface object.
1029 * @cmd_space: Pointer to memory area in which the commands should be encoded.
1030 */
1031 static int vmw_gb_surface_create(struct vmw_resource *res)
1032 {
1033 struct vmw_private *dev_priv = res->dev_priv;
1034 struct vmw_surface *srf = vmw_res_to_srf(res);
1035 uint32_t cmd_len, cmd_id, submit_len;
1036 int ret;
1037 struct {
1038 SVGA3dCmdHeader header;
1039 SVGA3dCmdDefineGBSurface body;
1040 } *cmd;
1041 struct {
1042 SVGA3dCmdHeader header;
1043 SVGA3dCmdDefineGBSurface_v2 body;
1044 } *cmd2;
1045
1046 if (likely(res->id != -1))
1047 return 0;
1048
1049 vmw_fifo_resource_inc(dev_priv);
1050 ret = vmw_resource_alloc_id(res);
1051 if (unlikely(ret != 0)) {
1052 DRM_ERROR("Failed to allocate a surface id.\n");
1053 goto out_no_id;
1054 }
1055
1056 if (unlikely(res->id >= VMWGFX_NUM_GB_SURFACE)) {
1057 ret = -EBUSY;
1058 goto out_no_fifo;
1059 }
1060
1061 if (srf->array_size > 0) {
1062 /* has_dx checked on creation time. */
1063 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V2;
1064 cmd_len = sizeof(cmd2->body);
1065 submit_len = sizeof(*cmd2);
1066 } else {
1067 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE;
1068 cmd_len = sizeof(cmd->body);
1069 submit_len = sizeof(*cmd);
1070 }
1071
1072 cmd = vmw_fifo_reserve(dev_priv, submit_len);
1073 cmd2 = (typeof(cmd2))cmd;
1074 if (unlikely(cmd == NULL)) {
1075 DRM_ERROR("Failed reserving FIFO space for surface "
1076 "creation.\n");
1077 ret = -ENOMEM;
1078 goto out_no_fifo;
1079 }
1080
1081 if (srf->array_size > 0) {
1082 cmd2->header.id = cmd_id;
1083 cmd2->header.size = cmd_len;
1084 cmd2->body.sid = srf->res.id;
1085 cmd2->body.surfaceFlags = srf->flags;
1086 cmd2->body.format = cpu_to_le32(srf->format);
1087 cmd2->body.numMipLevels = srf->mip_levels[0];
1088 cmd2->body.multisampleCount = srf->multisample_count;
1089 cmd2->body.autogenFilter = srf->autogen_filter;
1090 cmd2->body.size.width = srf->base_size.width;
1091 cmd2->body.size.height = srf->base_size.height;
1092 cmd2->body.size.depth = srf->base_size.depth;
1093 cmd2->body.arraySize = srf->array_size;
1094 } else {
1095 cmd->header.id = cmd_id;
1096 cmd->header.size = cmd_len;
1097 cmd->body.sid = srf->res.id;
1098 cmd->body.surfaceFlags = srf->flags;
1099 cmd->body.format = cpu_to_le32(srf->format);
1100 cmd->body.numMipLevels = srf->mip_levels[0];
1101 cmd->body.multisampleCount = srf->multisample_count;
1102 cmd->body.autogenFilter = srf->autogen_filter;
1103 cmd->body.size.width = srf->base_size.width;
1104 cmd->body.size.height = srf->base_size.height;
1105 cmd->body.size.depth = srf->base_size.depth;
1106 }
1107
1108 vmw_fifo_commit(dev_priv, submit_len);
1109
1110 return 0;
1111
1112 out_no_fifo:
1113 vmw_resource_release_id(res);
1114 out_no_id:
1115 vmw_fifo_resource_dec(dev_priv);
1116 return ret;
1117 }
1118
1119
1120 static int vmw_gb_surface_bind(struct vmw_resource *res,
1121 struct ttm_validate_buffer *val_buf)
1122 {
1123 struct vmw_private *dev_priv = res->dev_priv;
1124 struct {
1125 SVGA3dCmdHeader header;
1126 SVGA3dCmdBindGBSurface body;
1127 } *cmd1;
1128 struct {
1129 SVGA3dCmdHeader header;
1130 SVGA3dCmdUpdateGBSurface body;
1131 } *cmd2;
1132 uint32_t submit_size;
1133 struct ttm_buffer_object *bo = val_buf->bo;
1134
1135 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1136
1137 submit_size = sizeof(*cmd1) + (res->backup_dirty ? sizeof(*cmd2) : 0);
1138
1139 cmd1 = vmw_fifo_reserve(dev_priv, submit_size);
1140 if (unlikely(cmd1 == NULL)) {
1141 DRM_ERROR("Failed reserving FIFO space for surface "
1142 "binding.\n");
1143 return -ENOMEM;
1144 }
1145
1146 cmd1->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1147 cmd1->header.size = sizeof(cmd1->body);
1148 cmd1->body.sid = res->id;
1149 cmd1->body.mobid = bo->mem.start;
1150 if (res->backup_dirty) {
1151 cmd2 = (void *) &cmd1[1];
1152 cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_SURFACE;
1153 cmd2->header.size = sizeof(cmd2->body);
1154 cmd2->body.sid = res->id;
1155 res->backup_dirty = false;
1156 }
1157 vmw_fifo_commit(dev_priv, submit_size);
1158
1159 return 0;
1160 }
1161
1162 static int vmw_gb_surface_unbind(struct vmw_resource *res,
1163 bool readback,
1164 struct ttm_validate_buffer *val_buf)
1165 {
1166 struct vmw_private *dev_priv = res->dev_priv;
1167 struct ttm_buffer_object *bo = val_buf->bo;
1168 struct vmw_fence_obj *fence;
1169
1170 struct {
1171 SVGA3dCmdHeader header;
1172 SVGA3dCmdReadbackGBSurface body;
1173 } *cmd1;
1174 struct {
1175 SVGA3dCmdHeader header;
1176 SVGA3dCmdInvalidateGBSurface body;
1177 } *cmd2;
1178 struct {
1179 SVGA3dCmdHeader header;
1180 SVGA3dCmdBindGBSurface body;
1181 } *cmd3;
1182 uint32_t submit_size;
1183 uint8_t *cmd;
1184
1185
1186 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1187
1188 submit_size = sizeof(*cmd3) + (readback ? sizeof(*cmd1) : sizeof(*cmd2));
1189 cmd = vmw_fifo_reserve(dev_priv, submit_size);
1190 if (unlikely(cmd == NULL)) {
1191 DRM_ERROR("Failed reserving FIFO space for surface "
1192 "unbinding.\n");
1193 return -ENOMEM;
1194 }
1195
1196 if (readback) {
1197 cmd1 = (void *) cmd;
1198 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_SURFACE;
1199 cmd1->header.size = sizeof(cmd1->body);
1200 cmd1->body.sid = res->id;
1201 cmd3 = (void *) &cmd1[1];
1202 } else {
1203 cmd2 = (void *) cmd;
1204 cmd2->header.id = SVGA_3D_CMD_INVALIDATE_GB_SURFACE;
1205 cmd2->header.size = sizeof(cmd2->body);
1206 cmd2->body.sid = res->id;
1207 cmd3 = (void *) &cmd2[1];
1208 }
1209
1210 cmd3->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1211 cmd3->header.size = sizeof(cmd3->body);
1212 cmd3->body.sid = res->id;
1213 cmd3->body.mobid = SVGA3D_INVALID_ID;
1214
1215 vmw_fifo_commit(dev_priv, submit_size);
1216
1217 /*
1218 * Create a fence object and fence the backup buffer.
1219 */
1220
1221 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
1222 &fence, NULL);
1223
1224 vmw_fence_single_bo(val_buf->bo, fence);
1225
1226 if (likely(fence != NULL))
1227 vmw_fence_obj_unreference(&fence);
1228
1229 return 0;
1230 }
1231
1232 static int vmw_gb_surface_destroy(struct vmw_resource *res)
1233 {
1234 struct vmw_private *dev_priv = res->dev_priv;
1235 struct vmw_surface *srf = vmw_res_to_srf(res);
1236 struct {
1237 SVGA3dCmdHeader header;
1238 SVGA3dCmdDestroyGBSurface body;
1239 } *cmd;
1240
1241 if (likely(res->id == -1))
1242 return 0;
1243
1244 mutex_lock(&dev_priv->binding_mutex);
1245 vmw_view_surface_list_destroy(dev_priv, &srf->view_list);
1246 vmw_binding_res_list_scrub(&res->binding_head);
1247
1248 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
1249 if (unlikely(cmd == NULL)) {
1250 DRM_ERROR("Failed reserving FIFO space for surface "
1251 "destruction.\n");
1252 mutex_unlock(&dev_priv->binding_mutex);
1253 return -ENOMEM;
1254 }
1255
1256 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SURFACE;
1257 cmd->header.size = sizeof(cmd->body);
1258 cmd->body.sid = res->id;
1259 vmw_fifo_commit(dev_priv, sizeof(*cmd));
1260 mutex_unlock(&dev_priv->binding_mutex);
1261 vmw_resource_release_id(res);
1262 vmw_fifo_resource_dec(dev_priv);
1263
1264 return 0;
1265 }
1266
1267
1268 /**
1269 * vmw_gb_surface_define_ioctl - Ioctl function implementing
1270 * the user surface define functionality.
1271 *
1272 * @dev: Pointer to a struct drm_device.
1273 * @data: Pointer to data copied from / to user-space.
1274 * @file_priv: Pointer to a drm file private structure.
1275 */
1276 int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1277 struct drm_file *file_priv)
1278 {
1279 struct vmw_private *dev_priv = vmw_priv(dev);
1280 struct vmw_user_surface *user_srf;
1281 struct vmw_surface *srf;
1282 struct vmw_resource *res;
1283 struct vmw_resource *tmp;
1284 union drm_vmw_gb_surface_create_arg *arg =
1285 (union drm_vmw_gb_surface_create_arg *)data;
1286 struct drm_vmw_gb_surface_create_req *req = &arg->req;
1287 struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
1288 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1289 int ret;
1290 uint32_t size;
1291 uint32_t backup_handle;
1292
1293
1294 if (unlikely(vmw_user_surface_size == 0))
1295 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
1296 128;
1297
1298 size = vmw_user_surface_size + 128;
1299
1300 /* Define a surface based on the parameters. */
1301 ret = vmw_surface_gb_priv_define(dev,
1302 size,
1303 req->svga3d_flags,
1304 req->format,
1305 req->drm_surface_flags & drm_vmw_surface_flag_scanout,
1306 req->mip_levels,
1307 req->multisample_count,
1308 req->array_size,
1309 req->base_size,
1310 &srf);
1311 if (unlikely(ret != 0))
1312 return ret;
1313
1314 user_srf = container_of(srf, struct vmw_user_surface, srf);
1315 if (drm_is_primary_client(file_priv))
1316 user_srf->master = drm_master_get(file_priv->master);
1317
1318 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1319 if (unlikely(ret != 0))
1320 return ret;
1321
1322 res = &user_srf->srf.res;
1323
1324
1325 if (req->buffer_handle != SVGA3D_INVALID_ID) {
1326 ret = vmw_user_dmabuf_lookup(tfile, req->buffer_handle,
1327 &res->backup,
1328 &user_srf->backup_base);
1329 if (ret == 0 && res->backup->base.num_pages * PAGE_SIZE <
1330 res->backup_size) {
1331 DRM_ERROR("Surface backup buffer is too small.\n");
1332 vmw_dmabuf_unreference(&res->backup);
1333 ret = -EINVAL;
1334 goto out_unlock;
1335 }
1336 } else if (req->drm_surface_flags & drm_vmw_surface_flag_create_buffer)
1337 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
1338 res->backup_size,
1339 req->drm_surface_flags &
1340 drm_vmw_surface_flag_shareable,
1341 &backup_handle,
1342 &res->backup,
1343 &user_srf->backup_base);
1344
1345 if (unlikely(ret != 0)) {
1346 vmw_resource_unreference(&res);
1347 goto out_unlock;
1348 }
1349
1350 tmp = vmw_resource_reference(res);
1351 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
1352 req->drm_surface_flags &
1353 drm_vmw_surface_flag_shareable,
1354 VMW_RES_SURFACE,
1355 &vmw_user_surface_base_release, NULL);
1356
1357 if (unlikely(ret != 0)) {
1358 vmw_resource_unreference(&tmp);
1359 vmw_resource_unreference(&res);
1360 goto out_unlock;
1361 }
1362
1363 rep->handle = user_srf->prime.base.hash.key;
1364 rep->backup_size = res->backup_size;
1365 if (res->backup) {
1366 rep->buffer_map_handle =
1367 drm_vma_node_offset_addr(&res->backup->base.vma_node);
1368 rep->buffer_size = res->backup->base.num_pages * PAGE_SIZE;
1369 rep->buffer_handle = backup_handle;
1370 } else {
1371 rep->buffer_map_handle = 0;
1372 rep->buffer_size = 0;
1373 rep->buffer_handle = SVGA3D_INVALID_ID;
1374 }
1375
1376 vmw_resource_unreference(&res);
1377
1378 out_unlock:
1379 ttm_read_unlock(&dev_priv->reservation_sem);
1380 return ret;
1381 }
1382
1383 /**
1384 * vmw_gb_surface_reference_ioctl - Ioctl function implementing
1385 * the user surface reference functionality.
1386 *
1387 * @dev: Pointer to a struct drm_device.
1388 * @data: Pointer to data copied from / to user-space.
1389 * @file_priv: Pointer to a drm file private structure.
1390 */
1391 int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1392 struct drm_file *file_priv)
1393 {
1394 struct vmw_private *dev_priv = vmw_priv(dev);
1395 union drm_vmw_gb_surface_reference_arg *arg =
1396 (union drm_vmw_gb_surface_reference_arg *)data;
1397 struct drm_vmw_surface_arg *req = &arg->req;
1398 struct drm_vmw_gb_surface_ref_rep *rep = &arg->rep;
1399 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1400 struct vmw_surface *srf;
1401 struct vmw_user_surface *user_srf;
1402 struct ttm_base_object *base;
1403 uint32_t backup_handle;
1404 int ret = -EINVAL;
1405
1406 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
1407 req->handle_type, &base);
1408 if (unlikely(ret != 0))
1409 return ret;
1410
1411 user_srf = container_of(base, struct vmw_user_surface, prime.base);
1412 srf = &user_srf->srf;
1413 if (srf->res.backup == NULL) {
1414 DRM_ERROR("Shared GB surface is missing a backup buffer.\n");
1415 goto out_bad_resource;
1416 }
1417
1418 mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
1419 ret = vmw_user_dmabuf_reference(tfile, srf->res.backup,
1420 &backup_handle);
1421 mutex_unlock(&dev_priv->cmdbuf_mutex);
1422
1423 if (unlikely(ret != 0)) {
1424 DRM_ERROR("Could not add a reference to a GB surface "
1425 "backup buffer.\n");
1426 (void) ttm_ref_object_base_unref(tfile, base->hash.key,
1427 TTM_REF_USAGE);
1428 goto out_bad_resource;
1429 }
1430
1431 rep->creq.svga3d_flags = srf->flags;
1432 rep->creq.format = srf->format;
1433 rep->creq.mip_levels = srf->mip_levels[0];
1434 rep->creq.drm_surface_flags = 0;
1435 rep->creq.multisample_count = srf->multisample_count;
1436 rep->creq.autogen_filter = srf->autogen_filter;
1437 rep->creq.array_size = srf->array_size;
1438 rep->creq.buffer_handle = backup_handle;
1439 rep->creq.base_size = srf->base_size;
1440 rep->crep.handle = user_srf->prime.base.hash.key;
1441 rep->crep.backup_size = srf->res.backup_size;
1442 rep->crep.buffer_handle = backup_handle;
1443 rep->crep.buffer_map_handle =
1444 drm_vma_node_offset_addr(&srf->res.backup->base.vma_node);
1445 rep->crep.buffer_size = srf->res.backup->base.num_pages * PAGE_SIZE;
1446
1447 out_bad_resource:
1448 ttm_base_object_unref(&base);
1449
1450 return ret;
1451 }
1452
1453 /**
1454 * vmw_surface_gb_priv_define - Define a private GB surface
1455 *
1456 * @dev: Pointer to a struct drm_device
1457 * @user_accounting_size: Used to track user-space memory usage, set
1458 * to 0 for kernel mode only memory
1459 * @svga3d_flags: SVGA3d surface flags for the device
1460 * @format: requested surface format
1461 * @for_scanout: true if inteded to be used for scanout buffer
1462 * @num_mip_levels: number of MIP levels
1463 * @multisample_count:
1464 * @array_size: Surface array size.
1465 * @size: width, heigh, depth of the surface requested
1466 * @user_srf_out: allocated user_srf. Set to NULL on failure.
1467 *
1468 * GB surfaces allocated by this function will not have a user mode handle, and
1469 * thus will only be visible to vmwgfx. For optimization reasons the
1470 * surface may later be given a user mode handle by another function to make
1471 * it available to user mode drivers.
1472 */
1473 int vmw_surface_gb_priv_define(struct drm_device *dev,
1474 uint32_t user_accounting_size,
1475 uint32_t svga3d_flags,
1476 SVGA3dSurfaceFormat format,
1477 bool for_scanout,
1478 uint32_t num_mip_levels,
1479 uint32_t multisample_count,
1480 uint32_t array_size,
1481 struct drm_vmw_size size,
1482 struct vmw_surface **srf_out)
1483 {
1484 struct vmw_private *dev_priv = vmw_priv(dev);
1485 struct vmw_user_surface *user_srf;
1486 struct vmw_surface *srf;
1487 int ret;
1488 u32 num_layers;
1489
1490 *srf_out = NULL;
1491
1492 if (for_scanout) {
1493 if (!svga3dsurface_is_screen_target_format(format)) {
1494 DRM_ERROR("Invalid Screen Target surface format.");
1495 return -EINVAL;
1496 }
1497 } else {
1498 const struct svga3d_surface_desc *desc;
1499
1500 desc = svga3dsurface_get_desc(format);
1501 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
1502 DRM_ERROR("Invalid surface format.\n");
1503 return -EINVAL;
1504 }
1505 }
1506
1507 /* array_size must be null for non-GL3 host. */
1508 if (array_size > 0 && !dev_priv->has_dx) {
1509 DRM_ERROR("Tried to create DX surface on non-DX host.\n");
1510 return -EINVAL;
1511 }
1512
1513 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1514 if (unlikely(ret != 0))
1515 return ret;
1516
1517 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
1518 user_accounting_size, false, true);
1519 if (unlikely(ret != 0)) {
1520 if (ret != -ERESTARTSYS)
1521 DRM_ERROR("Out of graphics memory for surface"
1522 " creation.\n");
1523 goto out_unlock;
1524 }
1525
1526 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
1527 if (unlikely(user_srf == NULL)) {
1528 ret = -ENOMEM;
1529 goto out_no_user_srf;
1530 }
1531
1532 *srf_out = &user_srf->srf;
1533 user_srf->size = user_accounting_size;
1534 user_srf->prime.base.shareable = false;
1535 user_srf->prime.base.tfile = NULL;
1536
1537 srf = &user_srf->srf;
1538 srf->flags = svga3d_flags;
1539 srf->format = format;
1540 srf->scanout = for_scanout;
1541 srf->mip_levels[0] = num_mip_levels;
1542 srf->num_sizes = 1;
1543 srf->sizes = NULL;
1544 srf->offsets = NULL;
1545 srf->base_size = size;
1546 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
1547 srf->array_size = array_size;
1548 srf->multisample_count = multisample_count;
1549
1550 if (array_size)
1551 num_layers = array_size;
1552 else if (svga3d_flags & SVGA3D_SURFACE_CUBEMAP)
1553 num_layers = SVGA3D_MAX_SURFACE_FACES;
1554 else
1555 num_layers = 1;
1556
1557 srf->res.backup_size =
1558 svga3dsurface_get_serialized_size(srf->format,
1559 srf->base_size,
1560 srf->mip_levels[0],
1561 num_layers);
1562
1563 if (srf->flags & SVGA3D_SURFACE_BIND_STREAM_OUTPUT)
1564 srf->res.backup_size += sizeof(SVGA3dDXSOState);
1565
1566 if (dev_priv->active_display_unit == vmw_du_screen_target &&
1567 for_scanout)
1568 srf->flags |= SVGA3D_SURFACE_SCREENTARGET;
1569
1570 /*
1571 * From this point, the generic resource management functions
1572 * destroy the object on failure.
1573 */
1574 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
1575
1576 ttm_read_unlock(&dev_priv->reservation_sem);
1577 return ret;
1578
1579 out_no_user_srf:
1580 ttm_mem_global_free(vmw_mem_glob(dev_priv), user_accounting_size);
1581
1582 out_unlock:
1583 ttm_read_unlock(&dev_priv->reservation_sem);
1584 return ret;
1585 }