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1/**************************************************************************
2 *
3 * Copyright © 2009-2012 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 <ttm/ttm_placement.h>
31#include "svga3d_surfacedefs.h"
32
33/**
34 * struct vmw_user_surface - User-space visible surface resource
35 *
36 * @base: The TTM base object handling user-space visibility.
37 * @srf: The surface metadata.
38 * @size: TTM accounting size for the surface.
39 * @master: master of the creating client. Used for security check.
40 */
41struct vmw_user_surface {
42 struct ttm_prime_object prime;
43 struct vmw_surface srf;
44 uint32_t size;
45 struct drm_master *master;
46};
47
48/**
49 * struct vmw_surface_offset - Backing store mip level offset info
50 *
51 * @face: Surface face.
52 * @mip: Mip level.
53 * @bo_offset: Offset into backing store of this mip level.
54 *
55 */
56struct vmw_surface_offset {
57 uint32_t face;
58 uint32_t mip;
59 uint32_t bo_offset;
60};
61
62static void vmw_user_surface_free(struct vmw_resource *res);
63static struct vmw_resource *
64vmw_user_surface_base_to_res(struct ttm_base_object *base);
65static int vmw_legacy_srf_bind(struct vmw_resource *res,
66 struct ttm_validate_buffer *val_buf);
67static int vmw_legacy_srf_unbind(struct vmw_resource *res,
68 bool readback,
69 struct ttm_validate_buffer *val_buf);
70static int vmw_legacy_srf_create(struct vmw_resource *res);
71static int vmw_legacy_srf_destroy(struct vmw_resource *res);
72static int vmw_gb_surface_create(struct vmw_resource *res);
73static int vmw_gb_surface_bind(struct vmw_resource *res,
74 struct ttm_validate_buffer *val_buf);
75static int vmw_gb_surface_unbind(struct vmw_resource *res,
76 bool readback,
77 struct ttm_validate_buffer *val_buf);
78static int vmw_gb_surface_destroy(struct vmw_resource *res);
79
80
81static const struct vmw_user_resource_conv user_surface_conv = {
82 .object_type = VMW_RES_SURFACE,
83 .base_obj_to_res = vmw_user_surface_base_to_res,
84 .res_free = vmw_user_surface_free
85};
86
87const struct vmw_user_resource_conv *user_surface_converter =
88 &user_surface_conv;
89
90
91static uint64_t vmw_user_surface_size;
92
93static const struct vmw_res_func vmw_legacy_surface_func = {
94 .res_type = vmw_res_surface,
95 .needs_backup = false,
96 .may_evict = true,
97 .type_name = "legacy surfaces",
98 .backup_placement = &vmw_srf_placement,
99 .create = &vmw_legacy_srf_create,
100 .destroy = &vmw_legacy_srf_destroy,
101 .bind = &vmw_legacy_srf_bind,
102 .unbind = &vmw_legacy_srf_unbind
103};
104
105static const struct vmw_res_func vmw_gb_surface_func = {
106 .res_type = vmw_res_surface,
107 .needs_backup = true,
108 .may_evict = true,
109 .type_name = "guest backed surfaces",
110 .backup_placement = &vmw_mob_placement,
111 .create = vmw_gb_surface_create,
112 .destroy = vmw_gb_surface_destroy,
113 .bind = vmw_gb_surface_bind,
114 .unbind = vmw_gb_surface_unbind
115};
116
117/**
118 * struct vmw_surface_dma - SVGA3D DMA command
119 */
120struct vmw_surface_dma {
121 SVGA3dCmdHeader header;
122 SVGA3dCmdSurfaceDMA body;
123 SVGA3dCopyBox cb;
124 SVGA3dCmdSurfaceDMASuffix suffix;
125};
126
127/**
128 * struct vmw_surface_define - SVGA3D Surface Define command
129 */
130struct vmw_surface_define {
131 SVGA3dCmdHeader header;
132 SVGA3dCmdDefineSurface body;
133};
134
135/**
136 * struct vmw_surface_destroy - SVGA3D Surface Destroy command
137 */
138struct vmw_surface_destroy {
139 SVGA3dCmdHeader header;
140 SVGA3dCmdDestroySurface body;
141};
142
143
144/**
145 * vmw_surface_dma_size - Compute fifo size for a dma command.
146 *
147 * @srf: Pointer to a struct vmw_surface
148 *
149 * Computes the required size for a surface dma command for backup or
150 * restoration of the surface represented by @srf.
151 */
152static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
153{
154 return srf->num_sizes * sizeof(struct vmw_surface_dma);
155}
156
157
158/**
159 * vmw_surface_define_size - Compute fifo size for a surface define command.
160 *
161 * @srf: Pointer to a struct vmw_surface
162 *
163 * Computes the required size for a surface define command for the definition
164 * of the surface represented by @srf.
165 */
166static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
167{
168 return sizeof(struct vmw_surface_define) + srf->num_sizes *
169 sizeof(SVGA3dSize);
170}
171
172
173/**
174 * vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
175 *
176 * Computes the required size for a surface destroy command for the destruction
177 * of a hw surface.
178 */
179static inline uint32_t vmw_surface_destroy_size(void)
180{
181 return sizeof(struct vmw_surface_destroy);
182}
183
184/**
185 * vmw_surface_destroy_encode - Encode a surface_destroy command.
186 *
187 * @id: The surface id
188 * @cmd_space: Pointer to memory area in which the commands should be encoded.
189 */
190static void vmw_surface_destroy_encode(uint32_t id,
191 void *cmd_space)
192{
193 struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
194 cmd_space;
195
196 cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
197 cmd->header.size = sizeof(cmd->body);
198 cmd->body.sid = id;
199}
200
201/**
202 * vmw_surface_define_encode - Encode a surface_define command.
203 *
204 * @srf: Pointer to a struct vmw_surface object.
205 * @cmd_space: Pointer to memory area in which the commands should be encoded.
206 */
207static void vmw_surface_define_encode(const struct vmw_surface *srf,
208 void *cmd_space)
209{
210 struct vmw_surface_define *cmd = (struct vmw_surface_define *)
211 cmd_space;
212 struct drm_vmw_size *src_size;
213 SVGA3dSize *cmd_size;
214 uint32_t cmd_len;
215 int i;
216
217 cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
218
219 cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
220 cmd->header.size = cmd_len;
221 cmd->body.sid = srf->res.id;
222 cmd->body.surfaceFlags = srf->flags;
223 cmd->body.format = cpu_to_le32(srf->format);
224 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
225 cmd->body.face[i].numMipLevels = srf->mip_levels[i];
226
227 cmd += 1;
228 cmd_size = (SVGA3dSize *) cmd;
229 src_size = srf->sizes;
230
231 for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
232 cmd_size->width = src_size->width;
233 cmd_size->height = src_size->height;
234 cmd_size->depth = src_size->depth;
235 }
236}
237
238/**
239 * vmw_surface_dma_encode - Encode a surface_dma command.
240 *
241 * @srf: Pointer to a struct vmw_surface object.
242 * @cmd_space: Pointer to memory area in which the commands should be encoded.
243 * @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
244 * should be placed or read from.
245 * @to_surface: Boolean whether to DMA to the surface or from the surface.
246 */
247static void vmw_surface_dma_encode(struct vmw_surface *srf,
248 void *cmd_space,
249 const SVGAGuestPtr *ptr,
250 bool to_surface)
251{
252 uint32_t i;
253 struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
254 const struct svga3d_surface_desc *desc =
255 svga3dsurface_get_desc(srf->format);
256
257 for (i = 0; i < srf->num_sizes; ++i) {
258 SVGA3dCmdHeader *header = &cmd->header;
259 SVGA3dCmdSurfaceDMA *body = &cmd->body;
260 SVGA3dCopyBox *cb = &cmd->cb;
261 SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
262 const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
263 const struct drm_vmw_size *cur_size = &srf->sizes[i];
264
265 header->id = SVGA_3D_CMD_SURFACE_DMA;
266 header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
267
268 body->guest.ptr = *ptr;
269 body->guest.ptr.offset += cur_offset->bo_offset;
270 body->guest.pitch = svga3dsurface_calculate_pitch(desc,
271 cur_size);
272 body->host.sid = srf->res.id;
273 body->host.face = cur_offset->face;
274 body->host.mipmap = cur_offset->mip;
275 body->transfer = ((to_surface) ? SVGA3D_WRITE_HOST_VRAM :
276 SVGA3D_READ_HOST_VRAM);
277 cb->x = 0;
278 cb->y = 0;
279 cb->z = 0;
280 cb->srcx = 0;
281 cb->srcy = 0;
282 cb->srcz = 0;
283 cb->w = cur_size->width;
284 cb->h = cur_size->height;
285 cb->d = cur_size->depth;
286
287 suffix->suffixSize = sizeof(*suffix);
288 suffix->maximumOffset =
289 svga3dsurface_get_image_buffer_size(desc, cur_size,
290 body->guest.pitch);
291 suffix->flags.discard = 0;
292 suffix->flags.unsynchronized = 0;
293 suffix->flags.reserved = 0;
294 ++cmd;
295 }
296};
297
298
299/**
300 * vmw_hw_surface_destroy - destroy a Device surface
301 *
302 * @res: Pointer to a struct vmw_resource embedded in a struct
303 * vmw_surface.
304 *
305 * Destroys a the device surface associated with a struct vmw_surface if
306 * any, and adjusts accounting and resource count accordingly.
307 */
308static void vmw_hw_surface_destroy(struct vmw_resource *res)
309{
310
311 struct vmw_private *dev_priv = res->dev_priv;
312 struct vmw_surface *srf;
313 void *cmd;
314
315 if (res->func->destroy == vmw_gb_surface_destroy) {
316 (void) vmw_gb_surface_destroy(res);
317 return;
318 }
319
320 if (res->id != -1) {
321
322 cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
323 if (unlikely(cmd == NULL)) {
324 DRM_ERROR("Failed reserving FIFO space for surface "
325 "destruction.\n");
326 return;
327 }
328
329 vmw_surface_destroy_encode(res->id, cmd);
330 vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
331
332 /*
333 * used_memory_size_atomic, or separate lock
334 * to avoid taking dev_priv::cmdbuf_mutex in
335 * the destroy path.
336 */
337
338 mutex_lock(&dev_priv->cmdbuf_mutex);
339 srf = vmw_res_to_srf(res);
340 dev_priv->used_memory_size -= res->backup_size;
341 mutex_unlock(&dev_priv->cmdbuf_mutex);
342 }
343 vmw_3d_resource_dec(dev_priv, false);
344}
345
346/**
347 * vmw_legacy_srf_create - Create a device surface as part of the
348 * resource validation process.
349 *
350 * @res: Pointer to a struct vmw_surface.
351 *
352 * If the surface doesn't have a hw id.
353 *
354 * Returns -EBUSY if there wasn't sufficient device resources to
355 * complete the validation. Retry after freeing up resources.
356 *
357 * May return other errors if the kernel is out of guest resources.
358 */
359static int vmw_legacy_srf_create(struct vmw_resource *res)
360{
361 struct vmw_private *dev_priv = res->dev_priv;
362 struct vmw_surface *srf;
363 uint32_t submit_size;
364 uint8_t *cmd;
365 int ret;
366
367 if (likely(res->id != -1))
368 return 0;
369
370 srf = vmw_res_to_srf(res);
371 if (unlikely(dev_priv->used_memory_size + res->backup_size >=
372 dev_priv->memory_size))
373 return -EBUSY;
374
375 /*
376 * Alloc id for the resource.
377 */
378
379 ret = vmw_resource_alloc_id(res);
380 if (unlikely(ret != 0)) {
381 DRM_ERROR("Failed to allocate a surface id.\n");
382 goto out_no_id;
383 }
384
385 if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) {
386 ret = -EBUSY;
387 goto out_no_fifo;
388 }
389
390 /*
391 * Encode surface define- commands.
392 */
393
394 submit_size = vmw_surface_define_size(srf);
395 cmd = vmw_fifo_reserve(dev_priv, submit_size);
396 if (unlikely(cmd == NULL)) {
397 DRM_ERROR("Failed reserving FIFO space for surface "
398 "creation.\n");
399 ret = -ENOMEM;
400 goto out_no_fifo;
401 }
402
403 vmw_surface_define_encode(srf, cmd);
404 vmw_fifo_commit(dev_priv, submit_size);
405 /*
406 * Surface memory usage accounting.
407 */
408
409 dev_priv->used_memory_size += res->backup_size;
410 return 0;
411
412out_no_fifo:
413 vmw_resource_release_id(res);
414out_no_id:
415 return ret;
416}
417
418/**
419 * vmw_legacy_srf_dma - Copy backup data to or from a legacy surface.
420 *
421 * @res: Pointer to a struct vmw_res embedded in a struct
422 * vmw_surface.
423 * @val_buf: Pointer to a struct ttm_validate_buffer containing
424 * information about the backup buffer.
425 * @bind: Boolean wether to DMA to the surface.
426 *
427 * Transfer backup data to or from a legacy surface as part of the
428 * validation process.
429 * May return other errors if the kernel is out of guest resources.
430 * The backup buffer will be fenced or idle upon successful completion,
431 * and if the surface needs persistent backup storage, the backup buffer
432 * will also be returned reserved iff @bind is true.
433 */
434static int vmw_legacy_srf_dma(struct vmw_resource *res,
435 struct ttm_validate_buffer *val_buf,
436 bool bind)
437{
438 SVGAGuestPtr ptr;
439 struct vmw_fence_obj *fence;
440 uint32_t submit_size;
441 struct vmw_surface *srf = vmw_res_to_srf(res);
442 uint8_t *cmd;
443 struct vmw_private *dev_priv = res->dev_priv;
444
445 BUG_ON(val_buf->bo == NULL);
446
447 submit_size = vmw_surface_dma_size(srf);
448 cmd = vmw_fifo_reserve(dev_priv, submit_size);
449 if (unlikely(cmd == NULL)) {
450 DRM_ERROR("Failed reserving FIFO space for surface "
451 "DMA.\n");
452 return -ENOMEM;
453 }
454 vmw_bo_get_guest_ptr(val_buf->bo, &ptr);
455 vmw_surface_dma_encode(srf, cmd, &ptr, bind);
456
457 vmw_fifo_commit(dev_priv, submit_size);
458
459 /*
460 * Create a fence object and fence the backup buffer.
461 */
462
463 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
464 &fence, NULL);
465
466 vmw_fence_single_bo(val_buf->bo, fence);
467
468 if (likely(fence != NULL))
469 vmw_fence_obj_unreference(&fence);
470
471 return 0;
472}
473
474/**
475 * vmw_legacy_srf_bind - Perform a legacy surface bind as part of the
476 * surface validation process.
477 *
478 * @res: Pointer to a struct vmw_res embedded in a struct
479 * vmw_surface.
480 * @val_buf: Pointer to a struct ttm_validate_buffer containing
481 * information about the backup buffer.
482 *
483 * This function will copy backup data to the surface if the
484 * backup buffer is dirty.
485 */
486static int vmw_legacy_srf_bind(struct vmw_resource *res,
487 struct ttm_validate_buffer *val_buf)
488{
489 if (!res->backup_dirty)
490 return 0;
491
492 return vmw_legacy_srf_dma(res, val_buf, true);
493}
494
495
496/**
497 * vmw_legacy_srf_unbind - Perform a legacy surface unbind as part of the
498 * surface eviction process.
499 *
500 * @res: Pointer to a struct vmw_res embedded in a struct
501 * vmw_surface.
502 * @val_buf: Pointer to a struct ttm_validate_buffer containing
503 * information about the backup buffer.
504 *
505 * This function will copy backup data from the surface.
506 */
507static int vmw_legacy_srf_unbind(struct vmw_resource *res,
508 bool readback,
509 struct ttm_validate_buffer *val_buf)
510{
511 if (unlikely(readback))
512 return vmw_legacy_srf_dma(res, val_buf, false);
513 return 0;
514}
515
516/**
517 * vmw_legacy_srf_destroy - Destroy a device surface as part of a
518 * resource eviction process.
519 *
520 * @res: Pointer to a struct vmw_res embedded in a struct
521 * vmw_surface.
522 */
523static int vmw_legacy_srf_destroy(struct vmw_resource *res)
524{
525 struct vmw_private *dev_priv = res->dev_priv;
526 uint32_t submit_size;
527 uint8_t *cmd;
528
529 BUG_ON(res->id == -1);
530
531 /*
532 * Encode the dma- and surface destroy commands.
533 */
534
535 submit_size = vmw_surface_destroy_size();
536 cmd = vmw_fifo_reserve(dev_priv, submit_size);
537 if (unlikely(cmd == NULL)) {
538 DRM_ERROR("Failed reserving FIFO space for surface "
539 "eviction.\n");
540 return -ENOMEM;
541 }
542
543 vmw_surface_destroy_encode(res->id, cmd);
544 vmw_fifo_commit(dev_priv, submit_size);
545
546 /*
547 * Surface memory usage accounting.
548 */
549
550 dev_priv->used_memory_size -= res->backup_size;
551
552 /*
553 * Release the surface ID.
554 */
555
556 vmw_resource_release_id(res);
557
558 return 0;
559}
560
561
562/**
563 * vmw_surface_init - initialize a struct vmw_surface
564 *
565 * @dev_priv: Pointer to a device private struct.
566 * @srf: Pointer to the struct vmw_surface to initialize.
567 * @res_free: Pointer to a resource destructor used to free
568 * the object.
569 */
570static int vmw_surface_init(struct vmw_private *dev_priv,
571 struct vmw_surface *srf,
572 void (*res_free) (struct vmw_resource *res))
573{
574 int ret;
575 struct vmw_resource *res = &srf->res;
576
577 BUG_ON(res_free == NULL);
578 if (!dev_priv->has_mob)
579 (void) vmw_3d_resource_inc(dev_priv, false);
580 ret = vmw_resource_init(dev_priv, res, true, res_free,
581 (dev_priv->has_mob) ? &vmw_gb_surface_func :
582 &vmw_legacy_surface_func);
583
584 if (unlikely(ret != 0)) {
585 if (!dev_priv->has_mob)
586 vmw_3d_resource_dec(dev_priv, false);
587 res_free(res);
588 return ret;
589 }
590
591 /*
592 * The surface won't be visible to hardware until a
593 * surface validate.
594 */
595
596 vmw_resource_activate(res, vmw_hw_surface_destroy);
597 return ret;
598}
599
600/**
601 * vmw_user_surface_base_to_res - TTM base object to resource converter for
602 * user visible surfaces
603 *
604 * @base: Pointer to a TTM base object
605 *
606 * Returns the struct vmw_resource embedded in a struct vmw_surface
607 * for the user-visible object identified by the TTM base object @base.
608 */
609static struct vmw_resource *
610vmw_user_surface_base_to_res(struct ttm_base_object *base)
611{
612 return &(container_of(base, struct vmw_user_surface,
613 prime.base)->srf.res);
614}
615
616/**
617 * vmw_user_surface_free - User visible surface resource destructor
618 *
619 * @res: A struct vmw_resource embedded in a struct vmw_surface.
620 */
621static void vmw_user_surface_free(struct vmw_resource *res)
622{
623 struct vmw_surface *srf = vmw_res_to_srf(res);
624 struct vmw_user_surface *user_srf =
625 container_of(srf, struct vmw_user_surface, srf);
626 struct vmw_private *dev_priv = srf->res.dev_priv;
627 uint32_t size = user_srf->size;
628
629 if (user_srf->master)
630 drm_master_put(&user_srf->master);
631 kfree(srf->offsets);
632 kfree(srf->sizes);
633 kfree(srf->snooper.image);
634 ttm_prime_object_kfree(user_srf, prime);
635 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
636}
637
638/**
639 * vmw_user_surface_free - User visible surface TTM base object destructor
640 *
641 * @p_base: Pointer to a pointer to a TTM base object
642 * embedded in a struct vmw_user_surface.
643 *
644 * Drops the base object's reference on its resource, and the
645 * pointer pointed to by *p_base is set to NULL.
646 */
647static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
648{
649 struct ttm_base_object *base = *p_base;
650 struct vmw_user_surface *user_srf =
651 container_of(base, struct vmw_user_surface, prime.base);
652 struct vmw_resource *res = &user_srf->srf.res;
653
654 *p_base = NULL;
655 vmw_resource_unreference(&res);
656}
657
658/**
659 * vmw_user_surface_destroy_ioctl - Ioctl function implementing
660 * the user surface destroy functionality.
661 *
662 * @dev: Pointer to a struct drm_device.
663 * @data: Pointer to data copied from / to user-space.
664 * @file_priv: Pointer to a drm file private structure.
665 */
666int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
667 struct drm_file *file_priv)
668{
669 struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
670 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
671
672 return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
673}
674
675/**
676 * vmw_user_surface_define_ioctl - Ioctl function implementing
677 * the user surface define functionality.
678 *
679 * @dev: Pointer to a struct drm_device.
680 * @data: Pointer to data copied from / to user-space.
681 * @file_priv: Pointer to a drm file private structure.
682 */
683int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
684 struct drm_file *file_priv)
685{
686 struct vmw_private *dev_priv = vmw_priv(dev);
687 struct vmw_user_surface *user_srf;
688 struct vmw_surface *srf;
689 struct vmw_resource *res;
690 struct vmw_resource *tmp;
691 union drm_vmw_surface_create_arg *arg =
692 (union drm_vmw_surface_create_arg *)data;
693 struct drm_vmw_surface_create_req *req = &arg->req;
694 struct drm_vmw_surface_arg *rep = &arg->rep;
695 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
696 struct drm_vmw_size __user *user_sizes;
697 int ret;
698 int i, j;
699 uint32_t cur_bo_offset;
700 struct drm_vmw_size *cur_size;
701 struct vmw_surface_offset *cur_offset;
702 uint32_t num_sizes;
703 uint32_t size;
704 const struct svga3d_surface_desc *desc;
705
706 if (unlikely(vmw_user_surface_size == 0))
707 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
708 128;
709
710 num_sizes = 0;
711 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
712 num_sizes += req->mip_levels[i];
713
714 if (num_sizes > DRM_VMW_MAX_SURFACE_FACES *
715 DRM_VMW_MAX_MIP_LEVELS)
716 return -EINVAL;
717
718 size = vmw_user_surface_size + 128 +
719 ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
720 ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
721
722
723 desc = svga3dsurface_get_desc(req->format);
724 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
725 DRM_ERROR("Invalid surface format for surface creation.\n");
726 return -EINVAL;
727 }
728
729 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
730 if (unlikely(ret != 0))
731 return ret;
732
733 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
734 size, false, true);
735 if (unlikely(ret != 0)) {
736 if (ret != -ERESTARTSYS)
737 DRM_ERROR("Out of graphics memory for surface"
738 " creation.\n");
739 goto out_unlock;
740 }
741
742 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
743 if (unlikely(user_srf == NULL)) {
744 ret = -ENOMEM;
745 goto out_no_user_srf;
746 }
747
748 srf = &user_srf->srf;
749 res = &srf->res;
750
751 srf->flags = req->flags;
752 srf->format = req->format;
753 srf->scanout = req->scanout;
754
755 memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
756 srf->num_sizes = num_sizes;
757 user_srf->size = size;
758
759 srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
760 if (unlikely(srf->sizes == NULL)) {
761 ret = -ENOMEM;
762 goto out_no_sizes;
763 }
764 srf->offsets = kmalloc(srf->num_sizes * sizeof(*srf->offsets),
765 GFP_KERNEL);
766 if (unlikely(srf->sizes == NULL)) {
767 ret = -ENOMEM;
768 goto out_no_offsets;
769 }
770
771 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
772 req->size_addr;
773
774 ret = copy_from_user(srf->sizes, user_sizes,
775 srf->num_sizes * sizeof(*srf->sizes));
776 if (unlikely(ret != 0)) {
777 ret = -EFAULT;
778 goto out_no_copy;
779 }
780
781 srf->base_size = *srf->sizes;
782 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
783 srf->multisample_count = 0;
784
785 cur_bo_offset = 0;
786 cur_offset = srf->offsets;
787 cur_size = srf->sizes;
788
789 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
790 for (j = 0; j < srf->mip_levels[i]; ++j) {
791 uint32_t stride = svga3dsurface_calculate_pitch
792 (desc, cur_size);
793
794 cur_offset->face = i;
795 cur_offset->mip = j;
796 cur_offset->bo_offset = cur_bo_offset;
797 cur_bo_offset += svga3dsurface_get_image_buffer_size
798 (desc, cur_size, stride);
799 ++cur_offset;
800 ++cur_size;
801 }
802 }
803 res->backup_size = cur_bo_offset;
804 if (srf->scanout &&
805 srf->num_sizes == 1 &&
806 srf->sizes[0].width == 64 &&
807 srf->sizes[0].height == 64 &&
808 srf->format == SVGA3D_A8R8G8B8) {
809
810 srf->snooper.image = kmalloc(64 * 64 * 4, GFP_KERNEL);
811 /* clear the image */
812 if (srf->snooper.image) {
813 memset(srf->snooper.image, 0x00, 64 * 64 * 4);
814 } else {
815 DRM_ERROR("Failed to allocate cursor_image\n");
816 ret = -ENOMEM;
817 goto out_no_copy;
818 }
819 } else {
820 srf->snooper.image = NULL;
821 }
822 srf->snooper.crtc = NULL;
823
824 user_srf->prime.base.shareable = false;
825 user_srf->prime.base.tfile = NULL;
826 if (drm_is_primary_client(file_priv))
827 user_srf->master = drm_master_get(file_priv->master);
828
829 /**
830 * From this point, the generic resource management functions
831 * destroy the object on failure.
832 */
833
834 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
835 if (unlikely(ret != 0))
836 goto out_unlock;
837
838 /*
839 * A gb-aware client referencing a shared surface will
840 * expect a backup buffer to be present.
841 */
842 if (dev_priv->has_mob && req->shareable) {
843 uint32_t backup_handle;
844
845 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
846 res->backup_size,
847 true,
848 &backup_handle,
849 &res->backup);
850 if (unlikely(ret != 0)) {
851 vmw_resource_unreference(&res);
852 goto out_unlock;
853 }
854 }
855
856 tmp = vmw_resource_reference(&srf->res);
857 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
858 req->shareable, VMW_RES_SURFACE,
859 &vmw_user_surface_base_release, NULL);
860
861 if (unlikely(ret != 0)) {
862 vmw_resource_unreference(&tmp);
863 vmw_resource_unreference(&res);
864 goto out_unlock;
865 }
866
867 rep->sid = user_srf->prime.base.hash.key;
868 vmw_resource_unreference(&res);
869
870 ttm_read_unlock(&dev_priv->reservation_sem);
871 return 0;
872out_no_copy:
873 kfree(srf->offsets);
874out_no_offsets:
875 kfree(srf->sizes);
876out_no_sizes:
877 ttm_prime_object_kfree(user_srf, prime);
878out_no_user_srf:
879 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
880out_unlock:
881 ttm_read_unlock(&dev_priv->reservation_sem);
882 return ret;
883}
884
885
886static int
887vmw_surface_handle_reference(struct vmw_private *dev_priv,
888 struct drm_file *file_priv,
889 uint32_t u_handle,
890 enum drm_vmw_handle_type handle_type,
891 struct ttm_base_object **base_p)
892{
893 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
894 struct vmw_user_surface *user_srf;
895 uint32_t handle;
896 struct ttm_base_object *base;
897 int ret;
898
899 if (handle_type == DRM_VMW_HANDLE_PRIME) {
900 ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
901 if (unlikely(ret != 0))
902 return ret;
903 } else {
904 if (unlikely(drm_is_render_client(file_priv))) {
905 DRM_ERROR("Render client refused legacy "
906 "surface reference.\n");
907 return -EACCES;
908 }
909 handle = u_handle;
910 }
911
912 ret = -EINVAL;
913 base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
914 if (unlikely(base == NULL)) {
915 DRM_ERROR("Could not find surface to reference.\n");
916 goto out_no_lookup;
917 }
918
919 if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
920 DRM_ERROR("Referenced object is not a surface.\n");
921 goto out_bad_resource;
922 }
923
924 if (handle_type != DRM_VMW_HANDLE_PRIME) {
925 user_srf = container_of(base, struct vmw_user_surface,
926 prime.base);
927
928 /*
929 * Make sure the surface creator has the same
930 * authenticating master.
931 */
932 if (drm_is_primary_client(file_priv) &&
933 user_srf->master != file_priv->master) {
934 DRM_ERROR("Trying to reference surface outside of"
935 " master domain.\n");
936 ret = -EACCES;
937 goto out_bad_resource;
938 }
939
940 ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
941 if (unlikely(ret != 0)) {
942 DRM_ERROR("Could not add a reference to a surface.\n");
943 goto out_bad_resource;
944 }
945 }
946
947 *base_p = base;
948 return 0;
949
950out_bad_resource:
951 ttm_base_object_unref(&base);
952out_no_lookup:
953 if (handle_type == DRM_VMW_HANDLE_PRIME)
954 (void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
955
956 return ret;
957}
958
959/**
960 * vmw_user_surface_define_ioctl - Ioctl function implementing
961 * the user surface reference functionality.
962 *
963 * @dev: Pointer to a struct drm_device.
964 * @data: Pointer to data copied from / to user-space.
965 * @file_priv: Pointer to a drm file private structure.
966 */
967int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
968 struct drm_file *file_priv)
969{
970 struct vmw_private *dev_priv = vmw_priv(dev);
971 union drm_vmw_surface_reference_arg *arg =
972 (union drm_vmw_surface_reference_arg *)data;
973 struct drm_vmw_surface_arg *req = &arg->req;
974 struct drm_vmw_surface_create_req *rep = &arg->rep;
975 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
976 struct vmw_surface *srf;
977 struct vmw_user_surface *user_srf;
978 struct drm_vmw_size __user *user_sizes;
979 struct ttm_base_object *base;
980 int ret;
981
982 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
983 req->handle_type, &base);
984 if (unlikely(ret != 0))
985 return ret;
986
987 user_srf = container_of(base, struct vmw_user_surface, prime.base);
988 srf = &user_srf->srf;
989
990 rep->flags = srf->flags;
991 rep->format = srf->format;
992 memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
993 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
994 rep->size_addr;
995
996 if (user_sizes)
997 ret = copy_to_user(user_sizes, &srf->base_size,
998 sizeof(srf->base_size));
999 if (unlikely(ret != 0)) {
1000 DRM_ERROR("copy_to_user failed %p %u\n",
1001 user_sizes, srf->num_sizes);
1002 ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
1003 ret = -EFAULT;
1004 }
1005
1006 ttm_base_object_unref(&base);
1007
1008 return ret;
1009}
1010
1011/**
1012 * vmw_surface_define_encode - Encode a surface_define command.
1013 *
1014 * @srf: Pointer to a struct vmw_surface object.
1015 * @cmd_space: Pointer to memory area in which the commands should be encoded.
1016 */
1017static int vmw_gb_surface_create(struct vmw_resource *res)
1018{
1019 struct vmw_private *dev_priv = res->dev_priv;
1020 struct vmw_surface *srf = vmw_res_to_srf(res);
1021 uint32_t cmd_len, submit_len;
1022 int ret;
1023 struct {
1024 SVGA3dCmdHeader header;
1025 SVGA3dCmdDefineGBSurface body;
1026 } *cmd;
1027
1028 if (likely(res->id != -1))
1029 return 0;
1030
1031 (void) vmw_3d_resource_inc(dev_priv, false);
1032 ret = vmw_resource_alloc_id(res);
1033 if (unlikely(ret != 0)) {
1034 DRM_ERROR("Failed to allocate a surface id.\n");
1035 goto out_no_id;
1036 }
1037
1038 if (unlikely(res->id >= VMWGFX_NUM_GB_SURFACE)) {
1039 ret = -EBUSY;
1040 goto out_no_fifo;
1041 }
1042
1043 cmd_len = sizeof(cmd->body);
1044 submit_len = sizeof(*cmd);
1045 cmd = vmw_fifo_reserve(dev_priv, submit_len);
1046 if (unlikely(cmd == NULL)) {
1047 DRM_ERROR("Failed reserving FIFO space for surface "
1048 "creation.\n");
1049 ret = -ENOMEM;
1050 goto out_no_fifo;
1051 }
1052
1053 cmd->header.id = SVGA_3D_CMD_DEFINE_GB_SURFACE;
1054 cmd->header.size = cmd_len;
1055 cmd->body.sid = srf->res.id;
1056 cmd->body.surfaceFlags = srf->flags;
1057 cmd->body.format = cpu_to_le32(srf->format);
1058 cmd->body.numMipLevels = srf->mip_levels[0];
1059 cmd->body.multisampleCount = srf->multisample_count;
1060 cmd->body.autogenFilter = srf->autogen_filter;
1061 cmd->body.size.width = srf->base_size.width;
1062 cmd->body.size.height = srf->base_size.height;
1063 cmd->body.size.depth = srf->base_size.depth;
1064 vmw_fifo_commit(dev_priv, submit_len);
1065
1066 return 0;
1067
1068out_no_fifo:
1069 vmw_resource_release_id(res);
1070out_no_id:
1071 vmw_3d_resource_dec(dev_priv, false);
1072 return ret;
1073}
1074
1075
1076static int vmw_gb_surface_bind(struct vmw_resource *res,
1077 struct ttm_validate_buffer *val_buf)
1078{
1079 struct vmw_private *dev_priv = res->dev_priv;
1080 struct {
1081 SVGA3dCmdHeader header;
1082 SVGA3dCmdBindGBSurface body;
1083 } *cmd1;
1084 struct {
1085 SVGA3dCmdHeader header;
1086 SVGA3dCmdUpdateGBSurface body;
1087 } *cmd2;
1088 uint32_t submit_size;
1089 struct ttm_buffer_object *bo = val_buf->bo;
1090
1091 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1092
1093 submit_size = sizeof(*cmd1) + (res->backup_dirty ? sizeof(*cmd2) : 0);
1094
1095 cmd1 = vmw_fifo_reserve(dev_priv, submit_size);
1096 if (unlikely(cmd1 == NULL)) {
1097 DRM_ERROR("Failed reserving FIFO space for surface "
1098 "binding.\n");
1099 return -ENOMEM;
1100 }
1101
1102 cmd1->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1103 cmd1->header.size = sizeof(cmd1->body);
1104 cmd1->body.sid = res->id;
1105 cmd1->body.mobid = bo->mem.start;
1106 if (res->backup_dirty) {
1107 cmd2 = (void *) &cmd1[1];
1108 cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_SURFACE;
1109 cmd2->header.size = sizeof(cmd2->body);
1110 cmd2->body.sid = res->id;
1111 res->backup_dirty = false;
1112 }
1113 vmw_fifo_commit(dev_priv, submit_size);
1114
1115 return 0;
1116}
1117
1118static int vmw_gb_surface_unbind(struct vmw_resource *res,
1119 bool readback,
1120 struct ttm_validate_buffer *val_buf)
1121{
1122 struct vmw_private *dev_priv = res->dev_priv;
1123 struct ttm_buffer_object *bo = val_buf->bo;
1124 struct vmw_fence_obj *fence;
1125
1126 struct {
1127 SVGA3dCmdHeader header;
1128 SVGA3dCmdReadbackGBSurface body;
1129 } *cmd1;
1130 struct {
1131 SVGA3dCmdHeader header;
1132 SVGA3dCmdInvalidateGBSurface body;
1133 } *cmd2;
1134 struct {
1135 SVGA3dCmdHeader header;
1136 SVGA3dCmdBindGBSurface body;
1137 } *cmd3;
1138 uint32_t submit_size;
1139 uint8_t *cmd;
1140
1141
1142 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1143
1144 submit_size = sizeof(*cmd3) + (readback ? sizeof(*cmd1) : sizeof(*cmd2));
1145 cmd = vmw_fifo_reserve(dev_priv, submit_size);
1146 if (unlikely(cmd == NULL)) {
1147 DRM_ERROR("Failed reserving FIFO space for surface "
1148 "unbinding.\n");
1149 return -ENOMEM;
1150 }
1151
1152 if (readback) {
1153 cmd1 = (void *) cmd;
1154 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_SURFACE;
1155 cmd1->header.size = sizeof(cmd1->body);
1156 cmd1->body.sid = res->id;
1157 cmd3 = (void *) &cmd1[1];
1158 } else {
1159 cmd2 = (void *) cmd;
1160 cmd2->header.id = SVGA_3D_CMD_INVALIDATE_GB_SURFACE;
1161 cmd2->header.size = sizeof(cmd2->body);
1162 cmd2->body.sid = res->id;
1163 cmd3 = (void *) &cmd2[1];
1164 }
1165
1166 cmd3->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1167 cmd3->header.size = sizeof(cmd3->body);
1168 cmd3->body.sid = res->id;
1169 cmd3->body.mobid = SVGA3D_INVALID_ID;
1170
1171 vmw_fifo_commit(dev_priv, submit_size);
1172
1173 /*
1174 * Create a fence object and fence the backup buffer.
1175 */
1176
1177 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
1178 &fence, NULL);
1179
1180 vmw_fence_single_bo(val_buf->bo, fence);
1181
1182 if (likely(fence != NULL))
1183 vmw_fence_obj_unreference(&fence);
1184
1185 return 0;
1186}
1187
1188static int vmw_gb_surface_destroy(struct vmw_resource *res)
1189{
1190 struct vmw_private *dev_priv = res->dev_priv;
1191 struct {
1192 SVGA3dCmdHeader header;
1193 SVGA3dCmdDestroyGBSurface body;
1194 } *cmd;
1195
1196 if (likely(res->id == -1))
1197 return 0;
1198
1199 mutex_lock(&dev_priv->binding_mutex);
1200 vmw_context_binding_res_list_scrub(&res->binding_head);
1201
1202 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
1203 if (unlikely(cmd == NULL)) {
1204 DRM_ERROR("Failed reserving FIFO space for surface "
1205 "destruction.\n");
1206 mutex_unlock(&dev_priv->binding_mutex);
1207 return -ENOMEM;
1208 }
1209
1210 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SURFACE;
1211 cmd->header.size = sizeof(cmd->body);
1212 cmd->body.sid = res->id;
1213 vmw_fifo_commit(dev_priv, sizeof(*cmd));
1214 mutex_unlock(&dev_priv->binding_mutex);
1215 vmw_resource_release_id(res);
1216 vmw_3d_resource_dec(dev_priv, false);
1217
1218 return 0;
1219}
1220
1221/**
1222 * vmw_gb_surface_define_ioctl - Ioctl function implementing
1223 * the user surface define functionality.
1224 *
1225 * @dev: Pointer to a struct drm_device.
1226 * @data: Pointer to data copied from / to user-space.
1227 * @file_priv: Pointer to a drm file private structure.
1228 */
1229int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1230 struct drm_file *file_priv)
1231{
1232 struct vmw_private *dev_priv = vmw_priv(dev);
1233 struct vmw_user_surface *user_srf;
1234 struct vmw_surface *srf;
1235 struct vmw_resource *res;
1236 struct vmw_resource *tmp;
1237 union drm_vmw_gb_surface_create_arg *arg =
1238 (union drm_vmw_gb_surface_create_arg *)data;
1239 struct drm_vmw_gb_surface_create_req *req = &arg->req;
1240 struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
1241 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1242 int ret;
1243 uint32_t size;
1244 const struct svga3d_surface_desc *desc;
1245 uint32_t backup_handle;
1246
1247 if (unlikely(vmw_user_surface_size == 0))
1248 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
1249 128;
1250
1251 size = vmw_user_surface_size + 128;
1252
1253 desc = svga3dsurface_get_desc(req->format);
1254 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
1255 DRM_ERROR("Invalid surface format for surface creation.\n");
1256 return -EINVAL;
1257 }
1258
1259 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1260 if (unlikely(ret != 0))
1261 return ret;
1262
1263 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
1264 size, false, true);
1265 if (unlikely(ret != 0)) {
1266 if (ret != -ERESTARTSYS)
1267 DRM_ERROR("Out of graphics memory for surface"
1268 " creation.\n");
1269 goto out_unlock;
1270 }
1271
1272 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
1273 if (unlikely(user_srf == NULL)) {
1274 ret = -ENOMEM;
1275 goto out_no_user_srf;
1276 }
1277
1278 srf = &user_srf->srf;
1279 res = &srf->res;
1280
1281 srf->flags = req->svga3d_flags;
1282 srf->format = req->format;
1283 srf->scanout = req->drm_surface_flags & drm_vmw_surface_flag_scanout;
1284 srf->mip_levels[0] = req->mip_levels;
1285 srf->num_sizes = 1;
1286 srf->sizes = NULL;
1287 srf->offsets = NULL;
1288 user_srf->size = size;
1289 srf->base_size = req->base_size;
1290 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
1291 srf->multisample_count = req->multisample_count;
1292 res->backup_size = svga3dsurface_get_serialized_size
1293 (srf->format, srf->base_size, srf->mip_levels[0],
1294 srf->flags & SVGA3D_SURFACE_CUBEMAP);
1295
1296 user_srf->prime.base.shareable = false;
1297 user_srf->prime.base.tfile = NULL;
1298 if (drm_is_primary_client(file_priv))
1299 user_srf->master = drm_master_get(file_priv->master);
1300
1301 /**
1302 * From this point, the generic resource management functions
1303 * destroy the object on failure.
1304 */
1305
1306 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
1307 if (unlikely(ret != 0))
1308 goto out_unlock;
1309
1310 if (req->buffer_handle != SVGA3D_INVALID_ID) {
1311 ret = vmw_user_dmabuf_lookup(tfile, req->buffer_handle,
1312 &res->backup);
1313 } else if (req->drm_surface_flags &
1314 drm_vmw_surface_flag_create_buffer)
1315 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
1316 res->backup_size,
1317 req->drm_surface_flags &
1318 drm_vmw_surface_flag_shareable,
1319 &backup_handle,
1320 &res->backup);
1321
1322 if (unlikely(ret != 0)) {
1323 vmw_resource_unreference(&res);
1324 goto out_unlock;
1325 }
1326
1327 tmp = vmw_resource_reference(&srf->res);
1328 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
1329 req->drm_surface_flags &
1330 drm_vmw_surface_flag_shareable,
1331 VMW_RES_SURFACE,
1332 &vmw_user_surface_base_release, NULL);
1333
1334 if (unlikely(ret != 0)) {
1335 vmw_resource_unreference(&tmp);
1336 vmw_resource_unreference(&res);
1337 goto out_unlock;
1338 }
1339
1340 rep->handle = user_srf->prime.base.hash.key;
1341 rep->backup_size = res->backup_size;
1342 if (res->backup) {
1343 rep->buffer_map_handle =
1344 drm_vma_node_offset_addr(&res->backup->base.vma_node);
1345 rep->buffer_size = res->backup->base.num_pages * PAGE_SIZE;
1346 rep->buffer_handle = backup_handle;
1347 } else {
1348 rep->buffer_map_handle = 0;
1349 rep->buffer_size = 0;
1350 rep->buffer_handle = SVGA3D_INVALID_ID;
1351 }
1352
1353 vmw_resource_unreference(&res);
1354
1355 ttm_read_unlock(&dev_priv->reservation_sem);
1356 return 0;
1357out_no_user_srf:
1358 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
1359out_unlock:
1360 ttm_read_unlock(&dev_priv->reservation_sem);
1361 return ret;
1362}
1363
1364/**
1365 * vmw_gb_surface_reference_ioctl - Ioctl function implementing
1366 * the user surface reference functionality.
1367 *
1368 * @dev: Pointer to a struct drm_device.
1369 * @data: Pointer to data copied from / to user-space.
1370 * @file_priv: Pointer to a drm file private structure.
1371 */
1372int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1373 struct drm_file *file_priv)
1374{
1375 struct vmw_private *dev_priv = vmw_priv(dev);
1376 union drm_vmw_gb_surface_reference_arg *arg =
1377 (union drm_vmw_gb_surface_reference_arg *)data;
1378 struct drm_vmw_surface_arg *req = &arg->req;
1379 struct drm_vmw_gb_surface_ref_rep *rep = &arg->rep;
1380 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1381 struct vmw_surface *srf;
1382 struct vmw_user_surface *user_srf;
1383 struct ttm_base_object *base;
1384 uint32_t backup_handle;
1385 int ret = -EINVAL;
1386
1387 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
1388 req->handle_type, &base);
1389 if (unlikely(ret != 0))
1390 return ret;
1391
1392 user_srf = container_of(base, struct vmw_user_surface, prime.base);
1393 srf = &user_srf->srf;
1394 if (srf->res.backup == NULL) {
1395 DRM_ERROR("Shared GB surface is missing a backup buffer.\n");
1396 goto out_bad_resource;
1397 }
1398
1399 mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
1400 ret = vmw_user_dmabuf_reference(tfile, srf->res.backup,
1401 &backup_handle);
1402 mutex_unlock(&dev_priv->cmdbuf_mutex);
1403
1404 if (unlikely(ret != 0)) {
1405 DRM_ERROR("Could not add a reference to a GB surface "
1406 "backup buffer.\n");
1407 (void) ttm_ref_object_base_unref(tfile, base->hash.key,
1408 TTM_REF_USAGE);
1409 goto out_bad_resource;
1410 }
1411
1412 rep->creq.svga3d_flags = srf->flags;
1413 rep->creq.format = srf->format;
1414 rep->creq.mip_levels = srf->mip_levels[0];
1415 rep->creq.drm_surface_flags = 0;
1416 rep->creq.multisample_count = srf->multisample_count;
1417 rep->creq.autogen_filter = srf->autogen_filter;
1418 rep->creq.buffer_handle = backup_handle;
1419 rep->creq.base_size = srf->base_size;
1420 rep->crep.handle = user_srf->prime.base.hash.key;
1421 rep->crep.backup_size = srf->res.backup_size;
1422 rep->crep.buffer_handle = backup_handle;
1423 rep->crep.buffer_map_handle =
1424 drm_vma_node_offset_addr(&srf->res.backup->base.vma_node);
1425 rep->crep.buffer_size = srf->res.backup->base.num_pages * PAGE_SIZE;
1426
1427out_bad_resource:
1428 ttm_base_object_unref(&base);
1429
1430 return ret;
1431}