Loading...
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 */
44struct 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 */
60struct vmw_surface_offset {
61 uint32_t face;
62 uint32_t mip;
63 uint32_t bo_offset;
64};
65
66static void vmw_user_surface_free(struct vmw_resource *res);
67static struct vmw_resource *
68vmw_user_surface_base_to_res(struct ttm_base_object *base);
69static int vmw_legacy_srf_bind(struct vmw_resource *res,
70 struct ttm_validate_buffer *val_buf);
71static int vmw_legacy_srf_unbind(struct vmw_resource *res,
72 bool readback,
73 struct ttm_validate_buffer *val_buf);
74static int vmw_legacy_srf_create(struct vmw_resource *res);
75static int vmw_legacy_srf_destroy(struct vmw_resource *res);
76static int vmw_gb_surface_create(struct vmw_resource *res);
77static int vmw_gb_surface_bind(struct vmw_resource *res,
78 struct ttm_validate_buffer *val_buf);
79static int vmw_gb_surface_unbind(struct vmw_resource *res,
80 bool readback,
81 struct ttm_validate_buffer *val_buf);
82static int vmw_gb_surface_destroy(struct vmw_resource *res);
83
84
85static 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
91const struct vmw_user_resource_conv *user_surface_converter =
92 &user_surface_conv;
93
94
95static uint64_t vmw_user_surface_size;
96
97static 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
109static 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 */
124struct 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 */
134struct vmw_surface_define {
135 SVGA3dCmdHeader header;
136 SVGA3dCmdDefineSurface body;
137};
138
139/**
140 * struct vmw_surface_destroy - SVGA3D Surface Destroy command
141 */
142struct 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 */
156static 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 */
170static 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 */
183static 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 */
194static 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 */
211static 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 */
251static 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 */
312static 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 */
363static 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
416out_no_fifo:
417 vmw_resource_release_id(res);
418out_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 */
438static 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 */
490static 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 */
511static 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 */
527static 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 */
574static 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 */
614static struct vmw_resource *
615vmw_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 */
626static 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 */
652static 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 if (user_srf->backup_base)
661 ttm_base_object_unref(&user_srf->backup_base);
662 vmw_resource_unreference(&res);
663}
664
665/**
666 * vmw_user_surface_destroy_ioctl - Ioctl function implementing
667 * the user surface destroy functionality.
668 *
669 * @dev: Pointer to a struct drm_device.
670 * @data: Pointer to data copied from / to user-space.
671 * @file_priv: Pointer to a drm file private structure.
672 */
673int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
674 struct drm_file *file_priv)
675{
676 struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
677 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
678
679 return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
680}
681
682/**
683 * vmw_user_surface_define_ioctl - Ioctl function implementing
684 * the user surface define functionality.
685 *
686 * @dev: Pointer to a struct drm_device.
687 * @data: Pointer to data copied from / to user-space.
688 * @file_priv: Pointer to a drm file private structure.
689 */
690int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
691 struct drm_file *file_priv)
692{
693 struct vmw_private *dev_priv = vmw_priv(dev);
694 struct vmw_user_surface *user_srf;
695 struct vmw_surface *srf;
696 struct vmw_resource *res;
697 struct vmw_resource *tmp;
698 union drm_vmw_surface_create_arg *arg =
699 (union drm_vmw_surface_create_arg *)data;
700 struct drm_vmw_surface_create_req *req = &arg->req;
701 struct drm_vmw_surface_arg *rep = &arg->rep;
702 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
703 struct drm_vmw_size __user *user_sizes;
704 int ret;
705 int i, j;
706 uint32_t cur_bo_offset;
707 struct drm_vmw_size *cur_size;
708 struct vmw_surface_offset *cur_offset;
709 uint32_t num_sizes;
710 uint32_t size;
711 const struct svga3d_surface_desc *desc;
712
713 if (unlikely(vmw_user_surface_size == 0))
714 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
715 128;
716
717 num_sizes = 0;
718 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
719 num_sizes += req->mip_levels[i];
720
721 if (num_sizes > DRM_VMW_MAX_SURFACE_FACES *
722 DRM_VMW_MAX_MIP_LEVELS)
723 return -EINVAL;
724
725 size = vmw_user_surface_size + 128 +
726 ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
727 ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
728
729
730 desc = svga3dsurface_get_desc(req->format);
731 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
732 DRM_ERROR("Invalid surface format for surface creation.\n");
733 DRM_ERROR("Format requested is: %d\n", req->format);
734 return -EINVAL;
735 }
736
737 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
738 if (unlikely(ret != 0))
739 return ret;
740
741 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
742 size, false, true);
743 if (unlikely(ret != 0)) {
744 if (ret != -ERESTARTSYS)
745 DRM_ERROR("Out of graphics memory for surface"
746 " creation.\n");
747 goto out_unlock;
748 }
749
750 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
751 if (unlikely(user_srf == NULL)) {
752 ret = -ENOMEM;
753 goto out_no_user_srf;
754 }
755
756 srf = &user_srf->srf;
757 res = &srf->res;
758
759 srf->flags = req->flags;
760 srf->format = req->format;
761 srf->scanout = req->scanout;
762
763 memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
764 srf->num_sizes = num_sizes;
765 user_srf->size = size;
766
767 srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
768 if (unlikely(srf->sizes == NULL)) {
769 ret = -ENOMEM;
770 goto out_no_sizes;
771 }
772 srf->offsets = kmalloc(srf->num_sizes * sizeof(*srf->offsets),
773 GFP_KERNEL);
774 if (unlikely(srf->offsets == NULL)) {
775 ret = -ENOMEM;
776 goto out_no_offsets;
777 }
778
779 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
780 req->size_addr;
781
782 ret = copy_from_user(srf->sizes, user_sizes,
783 srf->num_sizes * sizeof(*srf->sizes));
784 if (unlikely(ret != 0)) {
785 ret = -EFAULT;
786 goto out_no_copy;
787 }
788
789 srf->base_size = *srf->sizes;
790 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
791 srf->multisample_count = 0;
792
793 cur_bo_offset = 0;
794 cur_offset = srf->offsets;
795 cur_size = srf->sizes;
796
797 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
798 for (j = 0; j < srf->mip_levels[i]; ++j) {
799 uint32_t stride = svga3dsurface_calculate_pitch
800 (desc, cur_size);
801
802 cur_offset->face = i;
803 cur_offset->mip = j;
804 cur_offset->bo_offset = cur_bo_offset;
805 cur_bo_offset += svga3dsurface_get_image_buffer_size
806 (desc, cur_size, stride);
807 ++cur_offset;
808 ++cur_size;
809 }
810 }
811 res->backup_size = cur_bo_offset;
812 if (srf->scanout &&
813 srf->num_sizes == 1 &&
814 srf->sizes[0].width == 64 &&
815 srf->sizes[0].height == 64 &&
816 srf->format == SVGA3D_A8R8G8B8) {
817
818 srf->snooper.image = kzalloc(64 * 64 * 4, GFP_KERNEL);
819 if (!srf->snooper.image) {
820 DRM_ERROR("Failed to allocate cursor_image\n");
821 ret = -ENOMEM;
822 goto out_no_copy;
823 }
824 } else {
825 srf->snooper.image = NULL;
826 }
827 srf->snooper.crtc = NULL;
828
829 user_srf->prime.base.shareable = false;
830 user_srf->prime.base.tfile = NULL;
831 if (drm_is_primary_client(file_priv))
832 user_srf->master = drm_master_get(file_priv->master);
833
834 /**
835 * From this point, the generic resource management functions
836 * destroy the object on failure.
837 */
838
839 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
840 if (unlikely(ret != 0))
841 goto out_unlock;
842
843 /*
844 * A gb-aware client referencing a shared surface will
845 * expect a backup buffer to be present.
846 */
847 if (dev_priv->has_mob && req->shareable) {
848 uint32_t backup_handle;
849
850 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
851 res->backup_size,
852 true,
853 &backup_handle,
854 &res->backup,
855 &user_srf->backup_base);
856 if (unlikely(ret != 0)) {
857 vmw_resource_unreference(&res);
858 goto out_unlock;
859 }
860 }
861
862 tmp = vmw_resource_reference(&srf->res);
863 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
864 req->shareable, VMW_RES_SURFACE,
865 &vmw_user_surface_base_release, NULL);
866
867 if (unlikely(ret != 0)) {
868 vmw_resource_unreference(&tmp);
869 vmw_resource_unreference(&res);
870 goto out_unlock;
871 }
872
873 rep->sid = user_srf->prime.base.hash.key;
874 vmw_resource_unreference(&res);
875
876 ttm_read_unlock(&dev_priv->reservation_sem);
877 return 0;
878out_no_copy:
879 kfree(srf->offsets);
880out_no_offsets:
881 kfree(srf->sizes);
882out_no_sizes:
883 ttm_prime_object_kfree(user_srf, prime);
884out_no_user_srf:
885 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
886out_unlock:
887 ttm_read_unlock(&dev_priv->reservation_sem);
888 return ret;
889}
890
891
892static int
893vmw_surface_handle_reference(struct vmw_private *dev_priv,
894 struct drm_file *file_priv,
895 uint32_t u_handle,
896 enum drm_vmw_handle_type handle_type,
897 struct ttm_base_object **base_p)
898{
899 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
900 struct vmw_user_surface *user_srf;
901 uint32_t handle;
902 struct ttm_base_object *base;
903 int ret;
904
905 if (handle_type == DRM_VMW_HANDLE_PRIME) {
906 ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
907 if (unlikely(ret != 0))
908 return ret;
909 } else {
910 if (unlikely(drm_is_render_client(file_priv))) {
911 DRM_ERROR("Render client refused legacy "
912 "surface reference.\n");
913 return -EACCES;
914 }
915 if (ACCESS_ONCE(vmw_fpriv(file_priv)->locked_master)) {
916 DRM_ERROR("Locked master refused legacy "
917 "surface reference.\n");
918 return -EACCES;
919 }
920
921 handle = u_handle;
922 }
923
924 ret = -EINVAL;
925 base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
926 if (unlikely(base == NULL)) {
927 DRM_ERROR("Could not find surface to reference.\n");
928 goto out_no_lookup;
929 }
930
931 if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
932 DRM_ERROR("Referenced object is not a surface.\n");
933 goto out_bad_resource;
934 }
935
936 if (handle_type != DRM_VMW_HANDLE_PRIME) {
937 user_srf = container_of(base, struct vmw_user_surface,
938 prime.base);
939
940 /*
941 * Make sure the surface creator has the same
942 * authenticating master.
943 */
944 if (drm_is_primary_client(file_priv) &&
945 user_srf->master != file_priv->master) {
946 DRM_ERROR("Trying to reference surface outside of"
947 " master domain.\n");
948 ret = -EACCES;
949 goto out_bad_resource;
950 }
951
952 ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
953 if (unlikely(ret != 0)) {
954 DRM_ERROR("Could not add a reference to a surface.\n");
955 goto out_bad_resource;
956 }
957 }
958
959 *base_p = base;
960 return 0;
961
962out_bad_resource:
963 ttm_base_object_unref(&base);
964out_no_lookup:
965 if (handle_type == DRM_VMW_HANDLE_PRIME)
966 (void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
967
968 return ret;
969}
970
971/**
972 * vmw_user_surface_define_ioctl - Ioctl function implementing
973 * the user surface reference functionality.
974 *
975 * @dev: Pointer to a struct drm_device.
976 * @data: Pointer to data copied from / to user-space.
977 * @file_priv: Pointer to a drm file private structure.
978 */
979int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
980 struct drm_file *file_priv)
981{
982 struct vmw_private *dev_priv = vmw_priv(dev);
983 union drm_vmw_surface_reference_arg *arg =
984 (union drm_vmw_surface_reference_arg *)data;
985 struct drm_vmw_surface_arg *req = &arg->req;
986 struct drm_vmw_surface_create_req *rep = &arg->rep;
987 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
988 struct vmw_surface *srf;
989 struct vmw_user_surface *user_srf;
990 struct drm_vmw_size __user *user_sizes;
991 struct ttm_base_object *base;
992 int ret;
993
994 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
995 req->handle_type, &base);
996 if (unlikely(ret != 0))
997 return ret;
998
999 user_srf = container_of(base, struct vmw_user_surface, prime.base);
1000 srf = &user_srf->srf;
1001
1002 rep->flags = srf->flags;
1003 rep->format = srf->format;
1004 memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
1005 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
1006 rep->size_addr;
1007
1008 if (user_sizes)
1009 ret = copy_to_user(user_sizes, &srf->base_size,
1010 sizeof(srf->base_size));
1011 if (unlikely(ret != 0)) {
1012 DRM_ERROR("copy_to_user failed %p %u\n",
1013 user_sizes, srf->num_sizes);
1014 ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
1015 ret = -EFAULT;
1016 }
1017
1018 ttm_base_object_unref(&base);
1019
1020 return ret;
1021}
1022
1023/**
1024 * vmw_surface_define_encode - Encode a surface_define command.
1025 *
1026 * @srf: Pointer to a struct vmw_surface object.
1027 * @cmd_space: Pointer to memory area in which the commands should be encoded.
1028 */
1029static int vmw_gb_surface_create(struct vmw_resource *res)
1030{
1031 struct vmw_private *dev_priv = res->dev_priv;
1032 struct vmw_surface *srf = vmw_res_to_srf(res);
1033 uint32_t cmd_len, cmd_id, submit_len;
1034 int ret;
1035 struct {
1036 SVGA3dCmdHeader header;
1037 SVGA3dCmdDefineGBSurface body;
1038 } *cmd;
1039 struct {
1040 SVGA3dCmdHeader header;
1041 SVGA3dCmdDefineGBSurface_v2 body;
1042 } *cmd2;
1043
1044 if (likely(res->id != -1))
1045 return 0;
1046
1047 vmw_fifo_resource_inc(dev_priv);
1048 ret = vmw_resource_alloc_id(res);
1049 if (unlikely(ret != 0)) {
1050 DRM_ERROR("Failed to allocate a surface id.\n");
1051 goto out_no_id;
1052 }
1053
1054 if (unlikely(res->id >= VMWGFX_NUM_GB_SURFACE)) {
1055 ret = -EBUSY;
1056 goto out_no_fifo;
1057 }
1058
1059 if (srf->array_size > 0) {
1060 /* has_dx checked on creation time. */
1061 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V2;
1062 cmd_len = sizeof(cmd2->body);
1063 submit_len = sizeof(*cmd2);
1064 } else {
1065 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE;
1066 cmd_len = sizeof(cmd->body);
1067 submit_len = sizeof(*cmd);
1068 }
1069
1070 cmd = vmw_fifo_reserve(dev_priv, submit_len);
1071 cmd2 = (typeof(cmd2))cmd;
1072 if (unlikely(cmd == NULL)) {
1073 DRM_ERROR("Failed reserving FIFO space for surface "
1074 "creation.\n");
1075 ret = -ENOMEM;
1076 goto out_no_fifo;
1077 }
1078
1079 if (srf->array_size > 0) {
1080 cmd2->header.id = cmd_id;
1081 cmd2->header.size = cmd_len;
1082 cmd2->body.sid = srf->res.id;
1083 cmd2->body.surfaceFlags = srf->flags;
1084 cmd2->body.format = cpu_to_le32(srf->format);
1085 cmd2->body.numMipLevels = srf->mip_levels[0];
1086 cmd2->body.multisampleCount = srf->multisample_count;
1087 cmd2->body.autogenFilter = srf->autogen_filter;
1088 cmd2->body.size.width = srf->base_size.width;
1089 cmd2->body.size.height = srf->base_size.height;
1090 cmd2->body.size.depth = srf->base_size.depth;
1091 cmd2->body.arraySize = srf->array_size;
1092 } else {
1093 cmd->header.id = cmd_id;
1094 cmd->header.size = cmd_len;
1095 cmd->body.sid = srf->res.id;
1096 cmd->body.surfaceFlags = srf->flags;
1097 cmd->body.format = cpu_to_le32(srf->format);
1098 cmd->body.numMipLevels = srf->mip_levels[0];
1099 cmd->body.multisampleCount = srf->multisample_count;
1100 cmd->body.autogenFilter = srf->autogen_filter;
1101 cmd->body.size.width = srf->base_size.width;
1102 cmd->body.size.height = srf->base_size.height;
1103 cmd->body.size.depth = srf->base_size.depth;
1104 }
1105
1106 vmw_fifo_commit(dev_priv, submit_len);
1107
1108 return 0;
1109
1110out_no_fifo:
1111 vmw_resource_release_id(res);
1112out_no_id:
1113 vmw_fifo_resource_dec(dev_priv);
1114 return ret;
1115}
1116
1117
1118static int vmw_gb_surface_bind(struct vmw_resource *res,
1119 struct ttm_validate_buffer *val_buf)
1120{
1121 struct vmw_private *dev_priv = res->dev_priv;
1122 struct {
1123 SVGA3dCmdHeader header;
1124 SVGA3dCmdBindGBSurface body;
1125 } *cmd1;
1126 struct {
1127 SVGA3dCmdHeader header;
1128 SVGA3dCmdUpdateGBSurface body;
1129 } *cmd2;
1130 uint32_t submit_size;
1131 struct ttm_buffer_object *bo = val_buf->bo;
1132
1133 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1134
1135 submit_size = sizeof(*cmd1) + (res->backup_dirty ? sizeof(*cmd2) : 0);
1136
1137 cmd1 = vmw_fifo_reserve(dev_priv, submit_size);
1138 if (unlikely(cmd1 == NULL)) {
1139 DRM_ERROR("Failed reserving FIFO space for surface "
1140 "binding.\n");
1141 return -ENOMEM;
1142 }
1143
1144 cmd1->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1145 cmd1->header.size = sizeof(cmd1->body);
1146 cmd1->body.sid = res->id;
1147 cmd1->body.mobid = bo->mem.start;
1148 if (res->backup_dirty) {
1149 cmd2 = (void *) &cmd1[1];
1150 cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_SURFACE;
1151 cmd2->header.size = sizeof(cmd2->body);
1152 cmd2->body.sid = res->id;
1153 res->backup_dirty = false;
1154 }
1155 vmw_fifo_commit(dev_priv, submit_size);
1156
1157 return 0;
1158}
1159
1160static int vmw_gb_surface_unbind(struct vmw_resource *res,
1161 bool readback,
1162 struct ttm_validate_buffer *val_buf)
1163{
1164 struct vmw_private *dev_priv = res->dev_priv;
1165 struct ttm_buffer_object *bo = val_buf->bo;
1166 struct vmw_fence_obj *fence;
1167
1168 struct {
1169 SVGA3dCmdHeader header;
1170 SVGA3dCmdReadbackGBSurface body;
1171 } *cmd1;
1172 struct {
1173 SVGA3dCmdHeader header;
1174 SVGA3dCmdInvalidateGBSurface body;
1175 } *cmd2;
1176 struct {
1177 SVGA3dCmdHeader header;
1178 SVGA3dCmdBindGBSurface body;
1179 } *cmd3;
1180 uint32_t submit_size;
1181 uint8_t *cmd;
1182
1183
1184 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1185
1186 submit_size = sizeof(*cmd3) + (readback ? sizeof(*cmd1) : sizeof(*cmd2));
1187 cmd = vmw_fifo_reserve(dev_priv, submit_size);
1188 if (unlikely(cmd == NULL)) {
1189 DRM_ERROR("Failed reserving FIFO space for surface "
1190 "unbinding.\n");
1191 return -ENOMEM;
1192 }
1193
1194 if (readback) {
1195 cmd1 = (void *) cmd;
1196 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_SURFACE;
1197 cmd1->header.size = sizeof(cmd1->body);
1198 cmd1->body.sid = res->id;
1199 cmd3 = (void *) &cmd1[1];
1200 } else {
1201 cmd2 = (void *) cmd;
1202 cmd2->header.id = SVGA_3D_CMD_INVALIDATE_GB_SURFACE;
1203 cmd2->header.size = sizeof(cmd2->body);
1204 cmd2->body.sid = res->id;
1205 cmd3 = (void *) &cmd2[1];
1206 }
1207
1208 cmd3->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1209 cmd3->header.size = sizeof(cmd3->body);
1210 cmd3->body.sid = res->id;
1211 cmd3->body.mobid = SVGA3D_INVALID_ID;
1212
1213 vmw_fifo_commit(dev_priv, submit_size);
1214
1215 /*
1216 * Create a fence object and fence the backup buffer.
1217 */
1218
1219 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
1220 &fence, NULL);
1221
1222 vmw_fence_single_bo(val_buf->bo, fence);
1223
1224 if (likely(fence != NULL))
1225 vmw_fence_obj_unreference(&fence);
1226
1227 return 0;
1228}
1229
1230static int vmw_gb_surface_destroy(struct vmw_resource *res)
1231{
1232 struct vmw_private *dev_priv = res->dev_priv;
1233 struct vmw_surface *srf = vmw_res_to_srf(res);
1234 struct {
1235 SVGA3dCmdHeader header;
1236 SVGA3dCmdDestroyGBSurface body;
1237 } *cmd;
1238
1239 if (likely(res->id == -1))
1240 return 0;
1241
1242 mutex_lock(&dev_priv->binding_mutex);
1243 vmw_view_surface_list_destroy(dev_priv, &srf->view_list);
1244 vmw_binding_res_list_scrub(&res->binding_head);
1245
1246 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
1247 if (unlikely(cmd == NULL)) {
1248 DRM_ERROR("Failed reserving FIFO space for surface "
1249 "destruction.\n");
1250 mutex_unlock(&dev_priv->binding_mutex);
1251 return -ENOMEM;
1252 }
1253
1254 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SURFACE;
1255 cmd->header.size = sizeof(cmd->body);
1256 cmd->body.sid = res->id;
1257 vmw_fifo_commit(dev_priv, sizeof(*cmd));
1258 mutex_unlock(&dev_priv->binding_mutex);
1259 vmw_resource_release_id(res);
1260 vmw_fifo_resource_dec(dev_priv);
1261
1262 return 0;
1263}
1264
1265
1266/**
1267 * vmw_gb_surface_define_ioctl - Ioctl function implementing
1268 * the user surface define functionality.
1269 *
1270 * @dev: Pointer to a struct drm_device.
1271 * @data: Pointer to data copied from / to user-space.
1272 * @file_priv: Pointer to a drm file private structure.
1273 */
1274int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1275 struct drm_file *file_priv)
1276{
1277 struct vmw_private *dev_priv = vmw_priv(dev);
1278 struct vmw_user_surface *user_srf;
1279 struct vmw_surface *srf;
1280 struct vmw_resource *res;
1281 struct vmw_resource *tmp;
1282 union drm_vmw_gb_surface_create_arg *arg =
1283 (union drm_vmw_gb_surface_create_arg *)data;
1284 struct drm_vmw_gb_surface_create_req *req = &arg->req;
1285 struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
1286 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1287 int ret;
1288 uint32_t size;
1289 uint32_t backup_handle;
1290
1291 if (req->multisample_count != 0)
1292 return -EINVAL;
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
1378out_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 */
1391int 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
1447out_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 */
1473int 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
1579out_no_user_srf:
1580 ttm_mem_global_free(vmw_mem_glob(dev_priv), user_accounting_size);
1581
1582out_unlock:
1583 ttm_read_unlock(&dev_priv->reservation_sem);
1584 return ret;
1585}
1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
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 <drm/ttm/ttm_placement.h>
29
30#include "vmwgfx_drv.h"
31#include "vmwgfx_resource_priv.h"
32#include "vmwgfx_so.h"
33#include "vmwgfx_binding.h"
34#include "device_include/svga3d_surfacedefs.h"
35
36#define SVGA3D_FLAGS_64(upper32, lower32) (((uint64_t)upper32 << 32) | lower32)
37#define SVGA3D_FLAGS_UPPER_32(svga3d_flags) (svga3d_flags >> 32)
38#define SVGA3D_FLAGS_LOWER_32(svga3d_flags) \
39 (svga3d_flags & ((uint64_t)U32_MAX))
40
41/**
42 * struct vmw_user_surface - User-space visible surface resource
43 *
44 * @base: The TTM base object handling user-space visibility.
45 * @srf: The surface metadata.
46 * @size: TTM accounting size for the surface.
47 * @master: master of the creating client. Used for security check.
48 */
49struct vmw_user_surface {
50 struct ttm_prime_object prime;
51 struct vmw_surface srf;
52 uint32_t size;
53 struct drm_master *master;
54 struct ttm_base_object *backup_base;
55};
56
57/**
58 * struct vmw_surface_offset - Backing store mip level offset info
59 *
60 * @face: Surface face.
61 * @mip: Mip level.
62 * @bo_offset: Offset into backing store of this mip level.
63 *
64 */
65struct vmw_surface_offset {
66 uint32_t face;
67 uint32_t mip;
68 uint32_t bo_offset;
69};
70
71static void vmw_user_surface_free(struct vmw_resource *res);
72static struct vmw_resource *
73vmw_user_surface_base_to_res(struct ttm_base_object *base);
74static int vmw_legacy_srf_bind(struct vmw_resource *res,
75 struct ttm_validate_buffer *val_buf);
76static int vmw_legacy_srf_unbind(struct vmw_resource *res,
77 bool readback,
78 struct ttm_validate_buffer *val_buf);
79static int vmw_legacy_srf_create(struct vmw_resource *res);
80static int vmw_legacy_srf_destroy(struct vmw_resource *res);
81static int vmw_gb_surface_create(struct vmw_resource *res);
82static int vmw_gb_surface_bind(struct vmw_resource *res,
83 struct ttm_validate_buffer *val_buf);
84static int vmw_gb_surface_unbind(struct vmw_resource *res,
85 bool readback,
86 struct ttm_validate_buffer *val_buf);
87static int vmw_gb_surface_destroy(struct vmw_resource *res);
88static int
89vmw_gb_surface_define_internal(struct drm_device *dev,
90 struct drm_vmw_gb_surface_create_ext_req *req,
91 struct drm_vmw_gb_surface_create_rep *rep,
92 struct drm_file *file_priv);
93static int
94vmw_gb_surface_reference_internal(struct drm_device *dev,
95 struct drm_vmw_surface_arg *req,
96 struct drm_vmw_gb_surface_ref_ext_rep *rep,
97 struct drm_file *file_priv);
98
99static const struct vmw_user_resource_conv user_surface_conv = {
100 .object_type = VMW_RES_SURFACE,
101 .base_obj_to_res = vmw_user_surface_base_to_res,
102 .res_free = vmw_user_surface_free
103};
104
105const struct vmw_user_resource_conv *user_surface_converter =
106 &user_surface_conv;
107
108
109static uint64_t vmw_user_surface_size;
110
111static const struct vmw_res_func vmw_legacy_surface_func = {
112 .res_type = vmw_res_surface,
113 .needs_backup = false,
114 .may_evict = true,
115 .prio = 1,
116 .dirty_prio = 1,
117 .type_name = "legacy surfaces",
118 .backup_placement = &vmw_srf_placement,
119 .create = &vmw_legacy_srf_create,
120 .destroy = &vmw_legacy_srf_destroy,
121 .bind = &vmw_legacy_srf_bind,
122 .unbind = &vmw_legacy_srf_unbind
123};
124
125static const struct vmw_res_func vmw_gb_surface_func = {
126 .res_type = vmw_res_surface,
127 .needs_backup = true,
128 .may_evict = true,
129 .prio = 1,
130 .dirty_prio = 2,
131 .type_name = "guest backed surfaces",
132 .backup_placement = &vmw_mob_placement,
133 .create = vmw_gb_surface_create,
134 .destroy = vmw_gb_surface_destroy,
135 .bind = vmw_gb_surface_bind,
136 .unbind = vmw_gb_surface_unbind
137};
138
139/**
140 * struct vmw_surface_dma - SVGA3D DMA command
141 */
142struct vmw_surface_dma {
143 SVGA3dCmdHeader header;
144 SVGA3dCmdSurfaceDMA body;
145 SVGA3dCopyBox cb;
146 SVGA3dCmdSurfaceDMASuffix suffix;
147};
148
149/**
150 * struct vmw_surface_define - SVGA3D Surface Define command
151 */
152struct vmw_surface_define {
153 SVGA3dCmdHeader header;
154 SVGA3dCmdDefineSurface body;
155};
156
157/**
158 * struct vmw_surface_destroy - SVGA3D Surface Destroy command
159 */
160struct vmw_surface_destroy {
161 SVGA3dCmdHeader header;
162 SVGA3dCmdDestroySurface body;
163};
164
165
166/**
167 * vmw_surface_dma_size - Compute fifo size for a dma command.
168 *
169 * @srf: Pointer to a struct vmw_surface
170 *
171 * Computes the required size for a surface dma command for backup or
172 * restoration of the surface represented by @srf.
173 */
174static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
175{
176 return srf->num_sizes * sizeof(struct vmw_surface_dma);
177}
178
179
180/**
181 * vmw_surface_define_size - Compute fifo size for a surface define command.
182 *
183 * @srf: Pointer to a struct vmw_surface
184 *
185 * Computes the required size for a surface define command for the definition
186 * of the surface represented by @srf.
187 */
188static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
189{
190 return sizeof(struct vmw_surface_define) + srf->num_sizes *
191 sizeof(SVGA3dSize);
192}
193
194
195/**
196 * vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
197 *
198 * Computes the required size for a surface destroy command for the destruction
199 * of a hw surface.
200 */
201static inline uint32_t vmw_surface_destroy_size(void)
202{
203 return sizeof(struct vmw_surface_destroy);
204}
205
206/**
207 * vmw_surface_destroy_encode - Encode a surface_destroy command.
208 *
209 * @id: The surface id
210 * @cmd_space: Pointer to memory area in which the commands should be encoded.
211 */
212static void vmw_surface_destroy_encode(uint32_t id,
213 void *cmd_space)
214{
215 struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
216 cmd_space;
217
218 cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
219 cmd->header.size = sizeof(cmd->body);
220 cmd->body.sid = id;
221}
222
223/**
224 * vmw_surface_define_encode - Encode a surface_define command.
225 *
226 * @srf: Pointer to a struct vmw_surface object.
227 * @cmd_space: Pointer to memory area in which the commands should be encoded.
228 */
229static void vmw_surface_define_encode(const struct vmw_surface *srf,
230 void *cmd_space)
231{
232 struct vmw_surface_define *cmd = (struct vmw_surface_define *)
233 cmd_space;
234 struct drm_vmw_size *src_size;
235 SVGA3dSize *cmd_size;
236 uint32_t cmd_len;
237 int i;
238
239 cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
240
241 cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
242 cmd->header.size = cmd_len;
243 cmd->body.sid = srf->res.id;
244 /*
245 * Downcast of surfaceFlags, was upcasted when received from user-space,
246 * since driver internally stores as 64 bit.
247 * For legacy surface define only 32 bit flag is supported.
248 */
249 cmd->body.surfaceFlags = (SVGA3dSurface1Flags)srf->flags;
250 cmd->body.format = srf->format;
251 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
252 cmd->body.face[i].numMipLevels = srf->mip_levels[i];
253
254 cmd += 1;
255 cmd_size = (SVGA3dSize *) cmd;
256 src_size = srf->sizes;
257
258 for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
259 cmd_size->width = src_size->width;
260 cmd_size->height = src_size->height;
261 cmd_size->depth = src_size->depth;
262 }
263}
264
265/**
266 * vmw_surface_dma_encode - Encode a surface_dma command.
267 *
268 * @srf: Pointer to a struct vmw_surface object.
269 * @cmd_space: Pointer to memory area in which the commands should be encoded.
270 * @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
271 * should be placed or read from.
272 * @to_surface: Boolean whether to DMA to the surface or from the surface.
273 */
274static void vmw_surface_dma_encode(struct vmw_surface *srf,
275 void *cmd_space,
276 const SVGAGuestPtr *ptr,
277 bool to_surface)
278{
279 uint32_t i;
280 struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
281 const struct svga3d_surface_desc *desc =
282 svga3dsurface_get_desc(srf->format);
283
284 for (i = 0; i < srf->num_sizes; ++i) {
285 SVGA3dCmdHeader *header = &cmd->header;
286 SVGA3dCmdSurfaceDMA *body = &cmd->body;
287 SVGA3dCopyBox *cb = &cmd->cb;
288 SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
289 const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
290 const struct drm_vmw_size *cur_size = &srf->sizes[i];
291
292 header->id = SVGA_3D_CMD_SURFACE_DMA;
293 header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
294
295 body->guest.ptr = *ptr;
296 body->guest.ptr.offset += cur_offset->bo_offset;
297 body->guest.pitch = svga3dsurface_calculate_pitch(desc,
298 cur_size);
299 body->host.sid = srf->res.id;
300 body->host.face = cur_offset->face;
301 body->host.mipmap = cur_offset->mip;
302 body->transfer = ((to_surface) ? SVGA3D_WRITE_HOST_VRAM :
303 SVGA3D_READ_HOST_VRAM);
304 cb->x = 0;
305 cb->y = 0;
306 cb->z = 0;
307 cb->srcx = 0;
308 cb->srcy = 0;
309 cb->srcz = 0;
310 cb->w = cur_size->width;
311 cb->h = cur_size->height;
312 cb->d = cur_size->depth;
313
314 suffix->suffixSize = sizeof(*suffix);
315 suffix->maximumOffset =
316 svga3dsurface_get_image_buffer_size(desc, cur_size,
317 body->guest.pitch);
318 suffix->flags.discard = 0;
319 suffix->flags.unsynchronized = 0;
320 suffix->flags.reserved = 0;
321 ++cmd;
322 }
323};
324
325
326/**
327 * vmw_hw_surface_destroy - destroy a Device surface
328 *
329 * @res: Pointer to a struct vmw_resource embedded in a struct
330 * vmw_surface.
331 *
332 * Destroys a the device surface associated with a struct vmw_surface if
333 * any, and adjusts accounting and resource count accordingly.
334 */
335static void vmw_hw_surface_destroy(struct vmw_resource *res)
336{
337
338 struct vmw_private *dev_priv = res->dev_priv;
339 struct vmw_surface *srf;
340 void *cmd;
341
342 if (res->func->destroy == vmw_gb_surface_destroy) {
343 (void) vmw_gb_surface_destroy(res);
344 return;
345 }
346
347 if (res->id != -1) {
348
349 cmd = VMW_FIFO_RESERVE(dev_priv, vmw_surface_destroy_size());
350 if (unlikely(!cmd))
351 return;
352
353 vmw_surface_destroy_encode(res->id, cmd);
354 vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
355
356 /*
357 * used_memory_size_atomic, or separate lock
358 * to avoid taking dev_priv::cmdbuf_mutex in
359 * the destroy path.
360 */
361
362 mutex_lock(&dev_priv->cmdbuf_mutex);
363 srf = vmw_res_to_srf(res);
364 dev_priv->used_memory_size -= res->backup_size;
365 mutex_unlock(&dev_priv->cmdbuf_mutex);
366 }
367}
368
369/**
370 * vmw_legacy_srf_create - Create a device surface as part of the
371 * resource validation process.
372 *
373 * @res: Pointer to a struct vmw_surface.
374 *
375 * If the surface doesn't have a hw id.
376 *
377 * Returns -EBUSY if there wasn't sufficient device resources to
378 * complete the validation. Retry after freeing up resources.
379 *
380 * May return other errors if the kernel is out of guest resources.
381 */
382static int vmw_legacy_srf_create(struct vmw_resource *res)
383{
384 struct vmw_private *dev_priv = res->dev_priv;
385 struct vmw_surface *srf;
386 uint32_t submit_size;
387 uint8_t *cmd;
388 int ret;
389
390 if (likely(res->id != -1))
391 return 0;
392
393 srf = vmw_res_to_srf(res);
394 if (unlikely(dev_priv->used_memory_size + res->backup_size >=
395 dev_priv->memory_size))
396 return -EBUSY;
397
398 /*
399 * Alloc id for the resource.
400 */
401
402 ret = vmw_resource_alloc_id(res);
403 if (unlikely(ret != 0)) {
404 DRM_ERROR("Failed to allocate a surface id.\n");
405 goto out_no_id;
406 }
407
408 if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) {
409 ret = -EBUSY;
410 goto out_no_fifo;
411 }
412
413 /*
414 * Encode surface define- commands.
415 */
416
417 submit_size = vmw_surface_define_size(srf);
418 cmd = VMW_FIFO_RESERVE(dev_priv, submit_size);
419 if (unlikely(!cmd)) {
420 ret = -ENOMEM;
421 goto out_no_fifo;
422 }
423
424 vmw_surface_define_encode(srf, cmd);
425 vmw_fifo_commit(dev_priv, submit_size);
426 vmw_fifo_resource_inc(dev_priv);
427
428 /*
429 * Surface memory usage accounting.
430 */
431
432 dev_priv->used_memory_size += res->backup_size;
433 return 0;
434
435out_no_fifo:
436 vmw_resource_release_id(res);
437out_no_id:
438 return ret;
439}
440
441/**
442 * vmw_legacy_srf_dma - Copy backup data to or from a legacy surface.
443 *
444 * @res: Pointer to a struct vmw_res embedded in a struct
445 * vmw_surface.
446 * @val_buf: Pointer to a struct ttm_validate_buffer containing
447 * information about the backup buffer.
448 * @bind: Boolean wether to DMA to the surface.
449 *
450 * Transfer backup data to or from a legacy surface as part of the
451 * validation process.
452 * May return other errors if the kernel is out of guest resources.
453 * The backup buffer will be fenced or idle upon successful completion,
454 * and if the surface needs persistent backup storage, the backup buffer
455 * will also be returned reserved iff @bind is true.
456 */
457static int vmw_legacy_srf_dma(struct vmw_resource *res,
458 struct ttm_validate_buffer *val_buf,
459 bool bind)
460{
461 SVGAGuestPtr ptr;
462 struct vmw_fence_obj *fence;
463 uint32_t submit_size;
464 struct vmw_surface *srf = vmw_res_to_srf(res);
465 uint8_t *cmd;
466 struct vmw_private *dev_priv = res->dev_priv;
467
468 BUG_ON(!val_buf->bo);
469 submit_size = vmw_surface_dma_size(srf);
470 cmd = VMW_FIFO_RESERVE(dev_priv, submit_size);
471 if (unlikely(!cmd))
472 return -ENOMEM;
473
474 vmw_bo_get_guest_ptr(val_buf->bo, &ptr);
475 vmw_surface_dma_encode(srf, cmd, &ptr, bind);
476
477 vmw_fifo_commit(dev_priv, submit_size);
478
479 /*
480 * Create a fence object and fence the backup buffer.
481 */
482
483 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
484 &fence, NULL);
485
486 vmw_bo_fence_single(val_buf->bo, fence);
487
488 if (likely(fence != NULL))
489 vmw_fence_obj_unreference(&fence);
490
491 return 0;
492}
493
494/**
495 * vmw_legacy_srf_bind - Perform a legacy surface bind as part of the
496 * surface validation process.
497 *
498 * @res: Pointer to a struct vmw_res embedded in a struct
499 * vmw_surface.
500 * @val_buf: Pointer to a struct ttm_validate_buffer containing
501 * information about the backup buffer.
502 *
503 * This function will copy backup data to the surface if the
504 * backup buffer is dirty.
505 */
506static int vmw_legacy_srf_bind(struct vmw_resource *res,
507 struct ttm_validate_buffer *val_buf)
508{
509 if (!res->backup_dirty)
510 return 0;
511
512 return vmw_legacy_srf_dma(res, val_buf, true);
513}
514
515
516/**
517 * vmw_legacy_srf_unbind - Perform a legacy surface unbind as part of the
518 * surface eviction process.
519 *
520 * @res: Pointer to a struct vmw_res embedded in a struct
521 * vmw_surface.
522 * @val_buf: Pointer to a struct ttm_validate_buffer containing
523 * information about the backup buffer.
524 *
525 * This function will copy backup data from the surface.
526 */
527static int vmw_legacy_srf_unbind(struct vmw_resource *res,
528 bool readback,
529 struct ttm_validate_buffer *val_buf)
530{
531 if (unlikely(readback))
532 return vmw_legacy_srf_dma(res, val_buf, false);
533 return 0;
534}
535
536/**
537 * vmw_legacy_srf_destroy - Destroy a device surface as part of a
538 * resource eviction process.
539 *
540 * @res: Pointer to a struct vmw_res embedded in a struct
541 * vmw_surface.
542 */
543static int vmw_legacy_srf_destroy(struct vmw_resource *res)
544{
545 struct vmw_private *dev_priv = res->dev_priv;
546 uint32_t submit_size;
547 uint8_t *cmd;
548
549 BUG_ON(res->id == -1);
550
551 /*
552 * Encode the dma- and surface destroy commands.
553 */
554
555 submit_size = vmw_surface_destroy_size();
556 cmd = VMW_FIFO_RESERVE(dev_priv, submit_size);
557 if (unlikely(!cmd))
558 return -ENOMEM;
559
560 vmw_surface_destroy_encode(res->id, cmd);
561 vmw_fifo_commit(dev_priv, submit_size);
562
563 /*
564 * Surface memory usage accounting.
565 */
566
567 dev_priv->used_memory_size -= res->backup_size;
568
569 /*
570 * Release the surface ID.
571 */
572
573 vmw_resource_release_id(res);
574 vmw_fifo_resource_dec(dev_priv);
575
576 return 0;
577}
578
579
580/**
581 * vmw_surface_init - initialize a struct vmw_surface
582 *
583 * @dev_priv: Pointer to a device private struct.
584 * @srf: Pointer to the struct vmw_surface to initialize.
585 * @res_free: Pointer to a resource destructor used to free
586 * the object.
587 */
588static int vmw_surface_init(struct vmw_private *dev_priv,
589 struct vmw_surface *srf,
590 void (*res_free) (struct vmw_resource *res))
591{
592 int ret;
593 struct vmw_resource *res = &srf->res;
594
595 BUG_ON(!res_free);
596 ret = vmw_resource_init(dev_priv, res, true, res_free,
597 (dev_priv->has_mob) ? &vmw_gb_surface_func :
598 &vmw_legacy_surface_func);
599
600 if (unlikely(ret != 0)) {
601 res_free(res);
602 return ret;
603 }
604
605 /*
606 * The surface won't be visible to hardware until a
607 * surface validate.
608 */
609
610 INIT_LIST_HEAD(&srf->view_list);
611 res->hw_destroy = vmw_hw_surface_destroy;
612 return ret;
613}
614
615/**
616 * vmw_user_surface_base_to_res - TTM base object to resource converter for
617 * user visible surfaces
618 *
619 * @base: Pointer to a TTM base object
620 *
621 * Returns the struct vmw_resource embedded in a struct vmw_surface
622 * for the user-visible object identified by the TTM base object @base.
623 */
624static struct vmw_resource *
625vmw_user_surface_base_to_res(struct ttm_base_object *base)
626{
627 return &(container_of(base, struct vmw_user_surface,
628 prime.base)->srf.res);
629}
630
631/**
632 * vmw_user_surface_free - User visible surface resource destructor
633 *
634 * @res: A struct vmw_resource embedded in a struct vmw_surface.
635 */
636static void vmw_user_surface_free(struct vmw_resource *res)
637{
638 struct vmw_surface *srf = vmw_res_to_srf(res);
639 struct vmw_user_surface *user_srf =
640 container_of(srf, struct vmw_user_surface, srf);
641 struct vmw_private *dev_priv = srf->res.dev_priv;
642 uint32_t size = user_srf->size;
643
644 if (user_srf->master)
645 drm_master_put(&user_srf->master);
646 kfree(srf->offsets);
647 kfree(srf->sizes);
648 kfree(srf->snooper.image);
649 ttm_prime_object_kfree(user_srf, prime);
650 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
651}
652
653/**
654 * vmw_user_surface_free - User visible surface TTM base object destructor
655 *
656 * @p_base: Pointer to a pointer to a TTM base object
657 * embedded in a struct vmw_user_surface.
658 *
659 * Drops the base object's reference on its resource, and the
660 * pointer pointed to by *p_base is set to NULL.
661 */
662static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
663{
664 struct ttm_base_object *base = *p_base;
665 struct vmw_user_surface *user_srf =
666 container_of(base, struct vmw_user_surface, prime.base);
667 struct vmw_resource *res = &user_srf->srf.res;
668
669 *p_base = NULL;
670 if (user_srf->backup_base)
671 ttm_base_object_unref(&user_srf->backup_base);
672 vmw_resource_unreference(&res);
673}
674
675/**
676 * vmw_user_surface_destroy_ioctl - Ioctl function implementing
677 * the user surface destroy 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_destroy_ioctl(struct drm_device *dev, void *data,
684 struct drm_file *file_priv)
685{
686 struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
687 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
688
689 return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
690}
691
692/**
693 * vmw_user_surface_define_ioctl - Ioctl function implementing
694 * the user surface define functionality.
695 *
696 * @dev: Pointer to a struct drm_device.
697 * @data: Pointer to data copied from / to user-space.
698 * @file_priv: Pointer to a drm file private structure.
699 */
700int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
701 struct drm_file *file_priv)
702{
703 struct vmw_private *dev_priv = vmw_priv(dev);
704 struct vmw_user_surface *user_srf;
705 struct vmw_surface *srf;
706 struct vmw_resource *res;
707 struct vmw_resource *tmp;
708 union drm_vmw_surface_create_arg *arg =
709 (union drm_vmw_surface_create_arg *)data;
710 struct drm_vmw_surface_create_req *req = &arg->req;
711 struct drm_vmw_surface_arg *rep = &arg->rep;
712 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
713 struct ttm_operation_ctx ctx = {
714 .interruptible = true,
715 .no_wait_gpu = false
716 };
717 int ret;
718 int i, j;
719 uint32_t cur_bo_offset;
720 struct drm_vmw_size *cur_size;
721 struct vmw_surface_offset *cur_offset;
722 uint32_t num_sizes;
723 uint32_t size;
724 const struct svga3d_surface_desc *desc;
725
726 if (unlikely(vmw_user_surface_size == 0))
727 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
728 VMW_IDA_ACC_SIZE + TTM_OBJ_EXTRA_SIZE;
729
730 num_sizes = 0;
731 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
732 if (req->mip_levels[i] > DRM_VMW_MAX_MIP_LEVELS)
733 return -EINVAL;
734 num_sizes += req->mip_levels[i];
735 }
736
737 if (num_sizes > DRM_VMW_MAX_SURFACE_FACES * DRM_VMW_MAX_MIP_LEVELS ||
738 num_sizes == 0)
739 return -EINVAL;
740
741 size = vmw_user_surface_size +
742 ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
743 ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
744
745 desc = svga3dsurface_get_desc(req->format);
746 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
747 VMW_DEBUG_USER("Invalid format %d for surface creation.\n",
748 req->format);
749 return -EINVAL;
750 }
751
752 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
753 if (unlikely(ret != 0))
754 return ret;
755
756 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
757 size, &ctx);
758 if (unlikely(ret != 0)) {
759 if (ret != -ERESTARTSYS)
760 DRM_ERROR("Out of graphics memory for surface.\n");
761 goto out_unlock;
762 }
763
764 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
765 if (unlikely(!user_srf)) {
766 ret = -ENOMEM;
767 goto out_no_user_srf;
768 }
769
770 srf = &user_srf->srf;
771 res = &srf->res;
772
773 /* Driver internally stores as 64-bit flags */
774 srf->flags = (SVGA3dSurfaceAllFlags)req->flags;
775 srf->format = req->format;
776 srf->scanout = req->scanout;
777
778 memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
779 srf->num_sizes = num_sizes;
780 user_srf->size = size;
781 srf->sizes = memdup_user((struct drm_vmw_size __user *)(unsigned long)
782 req->size_addr,
783 sizeof(*srf->sizes) * srf->num_sizes);
784 if (IS_ERR(srf->sizes)) {
785 ret = PTR_ERR(srf->sizes);
786 goto out_no_sizes;
787 }
788 srf->offsets = kmalloc_array(srf->num_sizes,
789 sizeof(*srf->offsets),
790 GFP_KERNEL);
791 if (unlikely(!srf->offsets)) {
792 ret = -ENOMEM;
793 goto out_no_offsets;
794 }
795
796 srf->base_size = *srf->sizes;
797 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
798 srf->multisample_count = 0;
799 srf->multisample_pattern = SVGA3D_MS_PATTERN_NONE;
800 srf->quality_level = SVGA3D_MS_QUALITY_NONE;
801
802 cur_bo_offset = 0;
803 cur_offset = srf->offsets;
804 cur_size = srf->sizes;
805
806 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
807 for (j = 0; j < srf->mip_levels[i]; ++j) {
808 uint32_t stride = svga3dsurface_calculate_pitch
809 (desc, cur_size);
810
811 cur_offset->face = i;
812 cur_offset->mip = j;
813 cur_offset->bo_offset = cur_bo_offset;
814 cur_bo_offset += svga3dsurface_get_image_buffer_size
815 (desc, cur_size, stride);
816 ++cur_offset;
817 ++cur_size;
818 }
819 }
820 res->backup_size = cur_bo_offset;
821 if (srf->scanout &&
822 srf->num_sizes == 1 &&
823 srf->sizes[0].width == 64 &&
824 srf->sizes[0].height == 64 &&
825 srf->format == SVGA3D_A8R8G8B8) {
826
827 srf->snooper.image = kzalloc(64 * 64 * 4, GFP_KERNEL);
828 if (!srf->snooper.image) {
829 DRM_ERROR("Failed to allocate cursor_image\n");
830 ret = -ENOMEM;
831 goto out_no_copy;
832 }
833 } else {
834 srf->snooper.image = NULL;
835 }
836
837 user_srf->prime.base.shareable = false;
838 user_srf->prime.base.tfile = NULL;
839 if (drm_is_primary_client(file_priv))
840 user_srf->master = drm_master_get(file_priv->master);
841
842 /**
843 * From this point, the generic resource management functions
844 * destroy the object on failure.
845 */
846
847 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
848 if (unlikely(ret != 0))
849 goto out_unlock;
850
851 /*
852 * A gb-aware client referencing a shared surface will
853 * expect a backup buffer to be present.
854 */
855 if (dev_priv->has_mob && req->shareable) {
856 uint32_t backup_handle;
857
858 ret = vmw_user_bo_alloc(dev_priv, tfile,
859 res->backup_size,
860 true,
861 &backup_handle,
862 &res->backup,
863 &user_srf->backup_base);
864 if (unlikely(ret != 0)) {
865 vmw_resource_unreference(&res);
866 goto out_unlock;
867 }
868 }
869
870 tmp = vmw_resource_reference(&srf->res);
871 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
872 req->shareable, VMW_RES_SURFACE,
873 &vmw_user_surface_base_release, NULL);
874
875 if (unlikely(ret != 0)) {
876 vmw_resource_unreference(&tmp);
877 vmw_resource_unreference(&res);
878 goto out_unlock;
879 }
880
881 rep->sid = user_srf->prime.base.handle;
882 vmw_resource_unreference(&res);
883
884 ttm_read_unlock(&dev_priv->reservation_sem);
885 return 0;
886out_no_copy:
887 kfree(srf->offsets);
888out_no_offsets:
889 kfree(srf->sizes);
890out_no_sizes:
891 ttm_prime_object_kfree(user_srf, prime);
892out_no_user_srf:
893 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
894out_unlock:
895 ttm_read_unlock(&dev_priv->reservation_sem);
896 return ret;
897}
898
899
900static int
901vmw_surface_handle_reference(struct vmw_private *dev_priv,
902 struct drm_file *file_priv,
903 uint32_t u_handle,
904 enum drm_vmw_handle_type handle_type,
905 struct ttm_base_object **base_p)
906{
907 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
908 struct vmw_user_surface *user_srf;
909 uint32_t handle;
910 struct ttm_base_object *base;
911 int ret;
912 bool require_exist = false;
913
914 if (handle_type == DRM_VMW_HANDLE_PRIME) {
915 ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
916 if (unlikely(ret != 0))
917 return ret;
918 } else {
919 if (unlikely(drm_is_render_client(file_priv)))
920 require_exist = true;
921
922 handle = u_handle;
923 }
924
925 ret = -EINVAL;
926 base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
927 if (unlikely(!base)) {
928 VMW_DEBUG_USER("Could not find surface to reference.\n");
929 goto out_no_lookup;
930 }
931
932 if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
933 VMW_DEBUG_USER("Referenced object is not a surface.\n");
934 goto out_bad_resource;
935 }
936
937 if (handle_type != DRM_VMW_HANDLE_PRIME) {
938 user_srf = container_of(base, struct vmw_user_surface,
939 prime.base);
940
941 /*
942 * Make sure the surface creator has the same
943 * authenticating master, or is already registered with us.
944 */
945 if (drm_is_primary_client(file_priv) &&
946 user_srf->master != file_priv->master)
947 require_exist = true;
948
949 ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL,
950 require_exist);
951 if (unlikely(ret != 0)) {
952 DRM_ERROR("Could not add a reference to a surface.\n");
953 goto out_bad_resource;
954 }
955 }
956
957 *base_p = base;
958 return 0;
959
960out_bad_resource:
961 ttm_base_object_unref(&base);
962out_no_lookup:
963 if (handle_type == DRM_VMW_HANDLE_PRIME)
964 (void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
965
966 return ret;
967}
968
969/**
970 * vmw_user_surface_define_ioctl - Ioctl function implementing
971 * the user surface reference functionality.
972 *
973 * @dev: Pointer to a struct drm_device.
974 * @data: Pointer to data copied from / to user-space.
975 * @file_priv: Pointer to a drm file private structure.
976 */
977int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
978 struct drm_file *file_priv)
979{
980 struct vmw_private *dev_priv = vmw_priv(dev);
981 union drm_vmw_surface_reference_arg *arg =
982 (union drm_vmw_surface_reference_arg *)data;
983 struct drm_vmw_surface_arg *req = &arg->req;
984 struct drm_vmw_surface_create_req *rep = &arg->rep;
985 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
986 struct vmw_surface *srf;
987 struct vmw_user_surface *user_srf;
988 struct drm_vmw_size __user *user_sizes;
989 struct ttm_base_object *base;
990 int ret;
991
992 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
993 req->handle_type, &base);
994 if (unlikely(ret != 0))
995 return ret;
996
997 user_srf = container_of(base, struct vmw_user_surface, prime.base);
998 srf = &user_srf->srf;
999
1000 /* Downcast of flags when sending back to user space */
1001 rep->flags = (uint32_t)srf->flags;
1002 rep->format = srf->format;
1003 memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
1004 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
1005 rep->size_addr;
1006
1007 if (user_sizes)
1008 ret = copy_to_user(user_sizes, &srf->base_size,
1009 sizeof(srf->base_size));
1010 if (unlikely(ret != 0)) {
1011 VMW_DEBUG_USER("copy_to_user failed %p %u\n", user_sizes,
1012 srf->num_sizes);
1013 ttm_ref_object_base_unref(tfile, base->handle, TTM_REF_USAGE);
1014 ret = -EFAULT;
1015 }
1016
1017 ttm_base_object_unref(&base);
1018
1019 return ret;
1020}
1021
1022/**
1023 * vmw_surface_define_encode - Encode a surface_define command.
1024 *
1025 * @srf: Pointer to a struct vmw_surface object.
1026 * @cmd_space: Pointer to memory area in which the commands should be encoded.
1027 */
1028static int vmw_gb_surface_create(struct vmw_resource *res)
1029{
1030 struct vmw_private *dev_priv = res->dev_priv;
1031 struct vmw_surface *srf = vmw_res_to_srf(res);
1032 uint32_t cmd_len, cmd_id, submit_len;
1033 int ret;
1034 struct {
1035 SVGA3dCmdHeader header;
1036 SVGA3dCmdDefineGBSurface body;
1037 } *cmd;
1038 struct {
1039 SVGA3dCmdHeader header;
1040 SVGA3dCmdDefineGBSurface_v2 body;
1041 } *cmd2;
1042 struct {
1043 SVGA3dCmdHeader header;
1044 SVGA3dCmdDefineGBSurface_v3 body;
1045 } *cmd3;
1046
1047 if (likely(res->id != -1))
1048 return 0;
1049
1050 vmw_fifo_resource_inc(dev_priv);
1051 ret = vmw_resource_alloc_id(res);
1052 if (unlikely(ret != 0)) {
1053 DRM_ERROR("Failed to allocate a surface id.\n");
1054 goto out_no_id;
1055 }
1056
1057 if (unlikely(res->id >= VMWGFX_NUM_GB_SURFACE)) {
1058 ret = -EBUSY;
1059 goto out_no_fifo;
1060 }
1061
1062 if (dev_priv->has_sm4_1 && srf->array_size > 0) {
1063 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V3;
1064 cmd_len = sizeof(cmd3->body);
1065 submit_len = sizeof(*cmd3);
1066 } else if (srf->array_size > 0) {
1067 /* has_dx checked on creation time. */
1068 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V2;
1069 cmd_len = sizeof(cmd2->body);
1070 submit_len = sizeof(*cmd2);
1071 } else {
1072 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE;
1073 cmd_len = sizeof(cmd->body);
1074 submit_len = sizeof(*cmd);
1075 }
1076
1077 cmd = VMW_FIFO_RESERVE(dev_priv, submit_len);
1078 cmd2 = (typeof(cmd2))cmd;
1079 cmd3 = (typeof(cmd3))cmd;
1080 if (unlikely(!cmd)) {
1081 ret = -ENOMEM;
1082 goto out_no_fifo;
1083 }
1084
1085 if (dev_priv->has_sm4_1 && srf->array_size > 0) {
1086 cmd3->header.id = cmd_id;
1087 cmd3->header.size = cmd_len;
1088 cmd3->body.sid = srf->res.id;
1089 cmd3->body.surfaceFlags = srf->flags;
1090 cmd3->body.format = srf->format;
1091 cmd3->body.numMipLevels = srf->mip_levels[0];
1092 cmd3->body.multisampleCount = srf->multisample_count;
1093 cmd3->body.multisamplePattern = srf->multisample_pattern;
1094 cmd3->body.qualityLevel = srf->quality_level;
1095 cmd3->body.autogenFilter = srf->autogen_filter;
1096 cmd3->body.size.width = srf->base_size.width;
1097 cmd3->body.size.height = srf->base_size.height;
1098 cmd3->body.size.depth = srf->base_size.depth;
1099 cmd3->body.arraySize = srf->array_size;
1100 } else if (srf->array_size > 0) {
1101 cmd2->header.id = cmd_id;
1102 cmd2->header.size = cmd_len;
1103 cmd2->body.sid = srf->res.id;
1104 cmd2->body.surfaceFlags = srf->flags;
1105 cmd2->body.format = srf->format;
1106 cmd2->body.numMipLevels = srf->mip_levels[0];
1107 cmd2->body.multisampleCount = srf->multisample_count;
1108 cmd2->body.autogenFilter = srf->autogen_filter;
1109 cmd2->body.size.width = srf->base_size.width;
1110 cmd2->body.size.height = srf->base_size.height;
1111 cmd2->body.size.depth = srf->base_size.depth;
1112 cmd2->body.arraySize = srf->array_size;
1113 } else {
1114 cmd->header.id = cmd_id;
1115 cmd->header.size = cmd_len;
1116 cmd->body.sid = srf->res.id;
1117 cmd->body.surfaceFlags = srf->flags;
1118 cmd->body.format = srf->format;
1119 cmd->body.numMipLevels = srf->mip_levels[0];
1120 cmd->body.multisampleCount = srf->multisample_count;
1121 cmd->body.autogenFilter = srf->autogen_filter;
1122 cmd->body.size.width = srf->base_size.width;
1123 cmd->body.size.height = srf->base_size.height;
1124 cmd->body.size.depth = srf->base_size.depth;
1125 }
1126
1127 vmw_fifo_commit(dev_priv, submit_len);
1128
1129 return 0;
1130
1131out_no_fifo:
1132 vmw_resource_release_id(res);
1133out_no_id:
1134 vmw_fifo_resource_dec(dev_priv);
1135 return ret;
1136}
1137
1138
1139static int vmw_gb_surface_bind(struct vmw_resource *res,
1140 struct ttm_validate_buffer *val_buf)
1141{
1142 struct vmw_private *dev_priv = res->dev_priv;
1143 struct {
1144 SVGA3dCmdHeader header;
1145 SVGA3dCmdBindGBSurface body;
1146 } *cmd1;
1147 struct {
1148 SVGA3dCmdHeader header;
1149 SVGA3dCmdUpdateGBSurface body;
1150 } *cmd2;
1151 uint32_t submit_size;
1152 struct ttm_buffer_object *bo = val_buf->bo;
1153
1154 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1155
1156 submit_size = sizeof(*cmd1) + (res->backup_dirty ? sizeof(*cmd2) : 0);
1157
1158 cmd1 = VMW_FIFO_RESERVE(dev_priv, submit_size);
1159 if (unlikely(!cmd1))
1160 return -ENOMEM;
1161
1162 cmd1->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1163 cmd1->header.size = sizeof(cmd1->body);
1164 cmd1->body.sid = res->id;
1165 cmd1->body.mobid = bo->mem.start;
1166 if (res->backup_dirty) {
1167 cmd2 = (void *) &cmd1[1];
1168 cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_SURFACE;
1169 cmd2->header.size = sizeof(cmd2->body);
1170 cmd2->body.sid = res->id;
1171 res->backup_dirty = false;
1172 }
1173 vmw_fifo_commit(dev_priv, submit_size);
1174
1175 return 0;
1176}
1177
1178static int vmw_gb_surface_unbind(struct vmw_resource *res,
1179 bool readback,
1180 struct ttm_validate_buffer *val_buf)
1181{
1182 struct vmw_private *dev_priv = res->dev_priv;
1183 struct ttm_buffer_object *bo = val_buf->bo;
1184 struct vmw_fence_obj *fence;
1185
1186 struct {
1187 SVGA3dCmdHeader header;
1188 SVGA3dCmdReadbackGBSurface body;
1189 } *cmd1;
1190 struct {
1191 SVGA3dCmdHeader header;
1192 SVGA3dCmdInvalidateGBSurface body;
1193 } *cmd2;
1194 struct {
1195 SVGA3dCmdHeader header;
1196 SVGA3dCmdBindGBSurface body;
1197 } *cmd3;
1198 uint32_t submit_size;
1199 uint8_t *cmd;
1200
1201
1202 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1203
1204 submit_size = sizeof(*cmd3) + (readback ? sizeof(*cmd1) : sizeof(*cmd2));
1205 cmd = VMW_FIFO_RESERVE(dev_priv, submit_size);
1206 if (unlikely(!cmd))
1207 return -ENOMEM;
1208
1209 if (readback) {
1210 cmd1 = (void *) cmd;
1211 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_SURFACE;
1212 cmd1->header.size = sizeof(cmd1->body);
1213 cmd1->body.sid = res->id;
1214 cmd3 = (void *) &cmd1[1];
1215 } else {
1216 cmd2 = (void *) cmd;
1217 cmd2->header.id = SVGA_3D_CMD_INVALIDATE_GB_SURFACE;
1218 cmd2->header.size = sizeof(cmd2->body);
1219 cmd2->body.sid = res->id;
1220 cmd3 = (void *) &cmd2[1];
1221 }
1222
1223 cmd3->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1224 cmd3->header.size = sizeof(cmd3->body);
1225 cmd3->body.sid = res->id;
1226 cmd3->body.mobid = SVGA3D_INVALID_ID;
1227
1228 vmw_fifo_commit(dev_priv, submit_size);
1229
1230 /*
1231 * Create a fence object and fence the backup buffer.
1232 */
1233
1234 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
1235 &fence, NULL);
1236
1237 vmw_bo_fence_single(val_buf->bo, fence);
1238
1239 if (likely(fence != NULL))
1240 vmw_fence_obj_unreference(&fence);
1241
1242 return 0;
1243}
1244
1245static int vmw_gb_surface_destroy(struct vmw_resource *res)
1246{
1247 struct vmw_private *dev_priv = res->dev_priv;
1248 struct vmw_surface *srf = vmw_res_to_srf(res);
1249 struct {
1250 SVGA3dCmdHeader header;
1251 SVGA3dCmdDestroyGBSurface body;
1252 } *cmd;
1253
1254 if (likely(res->id == -1))
1255 return 0;
1256
1257 mutex_lock(&dev_priv->binding_mutex);
1258 vmw_view_surface_list_destroy(dev_priv, &srf->view_list);
1259 vmw_binding_res_list_scrub(&res->binding_head);
1260
1261 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
1262 if (unlikely(!cmd)) {
1263 mutex_unlock(&dev_priv->binding_mutex);
1264 return -ENOMEM;
1265 }
1266
1267 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SURFACE;
1268 cmd->header.size = sizeof(cmd->body);
1269 cmd->body.sid = res->id;
1270 vmw_fifo_commit(dev_priv, sizeof(*cmd));
1271 mutex_unlock(&dev_priv->binding_mutex);
1272 vmw_resource_release_id(res);
1273 vmw_fifo_resource_dec(dev_priv);
1274
1275 return 0;
1276}
1277
1278
1279/**
1280 * vmw_gb_surface_define_ioctl - Ioctl function implementing
1281 * the user surface define functionality.
1282 *
1283 * @dev: Pointer to a struct drm_device.
1284 * @data: Pointer to data copied from / to user-space.
1285 * @file_priv: Pointer to a drm file private structure.
1286 */
1287int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1288 struct drm_file *file_priv)
1289{
1290 union drm_vmw_gb_surface_create_arg *arg =
1291 (union drm_vmw_gb_surface_create_arg *)data;
1292 struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
1293 struct drm_vmw_gb_surface_create_ext_req req_ext;
1294
1295 req_ext.base = arg->req;
1296 req_ext.version = drm_vmw_gb_surface_v1;
1297 req_ext.svga3d_flags_upper_32_bits = 0;
1298 req_ext.multisample_pattern = SVGA3D_MS_PATTERN_NONE;
1299 req_ext.quality_level = SVGA3D_MS_QUALITY_NONE;
1300 req_ext.must_be_zero = 0;
1301
1302 return vmw_gb_surface_define_internal(dev, &req_ext, rep, file_priv);
1303}
1304
1305/**
1306 * vmw_gb_surface_reference_ioctl - Ioctl function implementing
1307 * the user surface reference functionality.
1308 *
1309 * @dev: Pointer to a struct drm_device.
1310 * @data: Pointer to data copied from / to user-space.
1311 * @file_priv: Pointer to a drm file private structure.
1312 */
1313int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1314 struct drm_file *file_priv)
1315{
1316 union drm_vmw_gb_surface_reference_arg *arg =
1317 (union drm_vmw_gb_surface_reference_arg *)data;
1318 struct drm_vmw_surface_arg *req = &arg->req;
1319 struct drm_vmw_gb_surface_ref_rep *rep = &arg->rep;
1320 struct drm_vmw_gb_surface_ref_ext_rep rep_ext;
1321 int ret;
1322
1323 ret = vmw_gb_surface_reference_internal(dev, req, &rep_ext, file_priv);
1324
1325 if (unlikely(ret != 0))
1326 return ret;
1327
1328 rep->creq = rep_ext.creq.base;
1329 rep->crep = rep_ext.crep;
1330
1331 return ret;
1332}
1333
1334/**
1335 * vmw_surface_gb_priv_define - Define a private GB surface
1336 *
1337 * @dev: Pointer to a struct drm_device
1338 * @user_accounting_size: Used to track user-space memory usage, set
1339 * to 0 for kernel mode only memory
1340 * @svga3d_flags: SVGA3d surface flags for the device
1341 * @format: requested surface format
1342 * @for_scanout: true if inteded to be used for scanout buffer
1343 * @num_mip_levels: number of MIP levels
1344 * @multisample_count:
1345 * @array_size: Surface array size.
1346 * @size: width, heigh, depth of the surface requested
1347 * @multisample_pattern: Multisampling pattern when msaa is supported
1348 * @quality_level: Precision settings
1349 * @user_srf_out: allocated user_srf. Set to NULL on failure.
1350 *
1351 * GB surfaces allocated by this function will not have a user mode handle, and
1352 * thus will only be visible to vmwgfx. For optimization reasons the
1353 * surface may later be given a user mode handle by another function to make
1354 * it available to user mode drivers.
1355 */
1356int vmw_surface_gb_priv_define(struct drm_device *dev,
1357 uint32_t user_accounting_size,
1358 SVGA3dSurfaceAllFlags svga3d_flags,
1359 SVGA3dSurfaceFormat format,
1360 bool for_scanout,
1361 uint32_t num_mip_levels,
1362 uint32_t multisample_count,
1363 uint32_t array_size,
1364 struct drm_vmw_size size,
1365 SVGA3dMSPattern multisample_pattern,
1366 SVGA3dMSQualityLevel quality_level,
1367 struct vmw_surface **srf_out)
1368{
1369 struct vmw_private *dev_priv = vmw_priv(dev);
1370 struct vmw_user_surface *user_srf;
1371 struct ttm_operation_ctx ctx = {
1372 .interruptible = true,
1373 .no_wait_gpu = false
1374 };
1375 struct vmw_surface *srf;
1376 int ret;
1377 u32 num_layers = 1;
1378 u32 sample_count = 1;
1379
1380 *srf_out = NULL;
1381
1382 if (for_scanout) {
1383 if (!svga3dsurface_is_screen_target_format(format)) {
1384 VMW_DEBUG_USER("Invalid Screen Target surface format.");
1385 return -EINVAL;
1386 }
1387
1388 if (size.width > dev_priv->texture_max_width ||
1389 size.height > dev_priv->texture_max_height) {
1390 VMW_DEBUG_USER("%ux%u\n, exceeds max surface size %ux%u",
1391 size.width, size.height,
1392 dev_priv->texture_max_width,
1393 dev_priv->texture_max_height);
1394 return -EINVAL;
1395 }
1396 } else {
1397 const struct svga3d_surface_desc *desc;
1398
1399 desc = svga3dsurface_get_desc(format);
1400 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
1401 VMW_DEBUG_USER("Invalid surface format.\n");
1402 return -EINVAL;
1403 }
1404 }
1405
1406 /* array_size must be null for non-GL3 host. */
1407 if (array_size > 0 && !dev_priv->has_dx) {
1408 VMW_DEBUG_USER("Tried to create DX surface on non-DX host.\n");
1409 return -EINVAL;
1410 }
1411
1412 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1413 if (unlikely(ret != 0))
1414 return ret;
1415
1416 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
1417 user_accounting_size, &ctx);
1418 if (unlikely(ret != 0)) {
1419 if (ret != -ERESTARTSYS)
1420 DRM_ERROR("Out of graphics memory for surface"
1421 " creation.\n");
1422 goto out_unlock;
1423 }
1424
1425 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
1426 if (unlikely(!user_srf)) {
1427 ret = -ENOMEM;
1428 goto out_no_user_srf;
1429 }
1430
1431 *srf_out = &user_srf->srf;
1432 user_srf->size = user_accounting_size;
1433 user_srf->prime.base.shareable = false;
1434 user_srf->prime.base.tfile = NULL;
1435
1436 srf = &user_srf->srf;
1437 srf->flags = svga3d_flags;
1438 srf->format = format;
1439 srf->scanout = for_scanout;
1440 srf->mip_levels[0] = num_mip_levels;
1441 srf->num_sizes = 1;
1442 srf->sizes = NULL;
1443 srf->offsets = NULL;
1444 srf->base_size = size;
1445 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
1446 srf->array_size = array_size;
1447 srf->multisample_count = multisample_count;
1448 srf->multisample_pattern = multisample_pattern;
1449 srf->quality_level = quality_level;
1450
1451 if (array_size)
1452 num_layers = array_size;
1453 else if (svga3d_flags & SVGA3D_SURFACE_CUBEMAP)
1454 num_layers = SVGA3D_MAX_SURFACE_FACES;
1455
1456 if (srf->flags & SVGA3D_SURFACE_MULTISAMPLE)
1457 sample_count = srf->multisample_count;
1458
1459 srf->res.backup_size =
1460 svga3dsurface_get_serialized_size_extended(srf->format,
1461 srf->base_size,
1462 srf->mip_levels[0],
1463 num_layers,
1464 sample_count);
1465
1466 if (srf->flags & SVGA3D_SURFACE_BIND_STREAM_OUTPUT)
1467 srf->res.backup_size += sizeof(SVGA3dDXSOState);
1468
1469 /*
1470 * Don't set SVGA3D_SURFACE_SCREENTARGET flag for a scanout surface with
1471 * size greater than STDU max width/height. This is really a workaround
1472 * to support creation of big framebuffer requested by some user-space
1473 * for whole topology. That big framebuffer won't really be used for
1474 * binding with screen target as during prepare_fb a separate surface is
1475 * created so it's safe to ignore SVGA3D_SURFACE_SCREENTARGET flag.
1476 */
1477 if (dev_priv->active_display_unit == vmw_du_screen_target &&
1478 for_scanout && size.width <= dev_priv->stdu_max_width &&
1479 size.height <= dev_priv->stdu_max_height)
1480 srf->flags |= SVGA3D_SURFACE_SCREENTARGET;
1481
1482 /*
1483 * From this point, the generic resource management functions
1484 * destroy the object on failure.
1485 */
1486 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
1487
1488 ttm_read_unlock(&dev_priv->reservation_sem);
1489 return ret;
1490
1491out_no_user_srf:
1492 ttm_mem_global_free(vmw_mem_glob(dev_priv), user_accounting_size);
1493
1494out_unlock:
1495 ttm_read_unlock(&dev_priv->reservation_sem);
1496 return ret;
1497}
1498
1499/**
1500 * vmw_gb_surface_define_ext_ioctl - Ioctl function implementing
1501 * the user surface define functionality.
1502 *
1503 * @dev: Pointer to a struct drm_device.
1504 * @data: Pointer to data copied from / to user-space.
1505 * @file_priv: Pointer to a drm file private structure.
1506 */
1507int vmw_gb_surface_define_ext_ioctl(struct drm_device *dev, void *data,
1508 struct drm_file *file_priv)
1509{
1510 union drm_vmw_gb_surface_create_ext_arg *arg =
1511 (union drm_vmw_gb_surface_create_ext_arg *)data;
1512 struct drm_vmw_gb_surface_create_ext_req *req = &arg->req;
1513 struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
1514
1515 return vmw_gb_surface_define_internal(dev, req, rep, file_priv);
1516}
1517
1518/**
1519 * vmw_gb_surface_reference_ext_ioctl - Ioctl function implementing
1520 * the user surface reference functionality.
1521 *
1522 * @dev: Pointer to a struct drm_device.
1523 * @data: Pointer to data copied from / to user-space.
1524 * @file_priv: Pointer to a drm file private structure.
1525 */
1526int vmw_gb_surface_reference_ext_ioctl(struct drm_device *dev, void *data,
1527 struct drm_file *file_priv)
1528{
1529 union drm_vmw_gb_surface_reference_ext_arg *arg =
1530 (union drm_vmw_gb_surface_reference_ext_arg *)data;
1531 struct drm_vmw_surface_arg *req = &arg->req;
1532 struct drm_vmw_gb_surface_ref_ext_rep *rep = &arg->rep;
1533
1534 return vmw_gb_surface_reference_internal(dev, req, rep, file_priv);
1535}
1536
1537/**
1538 * vmw_gb_surface_define_internal - Ioctl function implementing
1539 * the user surface define functionality.
1540 *
1541 * @dev: Pointer to a struct drm_device.
1542 * @req: Request argument from user-space.
1543 * @rep: Response argument to user-space.
1544 * @file_priv: Pointer to a drm file private structure.
1545 */
1546static int
1547vmw_gb_surface_define_internal(struct drm_device *dev,
1548 struct drm_vmw_gb_surface_create_ext_req *req,
1549 struct drm_vmw_gb_surface_create_rep *rep,
1550 struct drm_file *file_priv)
1551{
1552 struct vmw_private *dev_priv = vmw_priv(dev);
1553 struct vmw_user_surface *user_srf;
1554 struct vmw_surface *srf;
1555 struct vmw_resource *res;
1556 struct vmw_resource *tmp;
1557 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1558 int ret;
1559 uint32_t size;
1560 uint32_t backup_handle = 0;
1561 SVGA3dSurfaceAllFlags svga3d_flags_64 =
1562 SVGA3D_FLAGS_64(req->svga3d_flags_upper_32_bits,
1563 req->base.svga3d_flags);
1564
1565 if (!dev_priv->has_sm4_1) {
1566 /*
1567 * If SM4_1 is not support then cannot send 64-bit flag to
1568 * device.
1569 */
1570 if (req->svga3d_flags_upper_32_bits != 0)
1571 return -EINVAL;
1572
1573 if (req->base.multisample_count != 0)
1574 return -EINVAL;
1575
1576 if (req->multisample_pattern != SVGA3D_MS_PATTERN_NONE)
1577 return -EINVAL;
1578
1579 if (req->quality_level != SVGA3D_MS_QUALITY_NONE)
1580 return -EINVAL;
1581 }
1582
1583 if ((svga3d_flags_64 & SVGA3D_SURFACE_MULTISAMPLE) &&
1584 req->base.multisample_count == 0)
1585 return -EINVAL;
1586
1587 if (req->base.mip_levels > DRM_VMW_MAX_MIP_LEVELS)
1588 return -EINVAL;
1589
1590 if (unlikely(vmw_user_surface_size == 0))
1591 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
1592 VMW_IDA_ACC_SIZE + TTM_OBJ_EXTRA_SIZE;
1593
1594 size = vmw_user_surface_size;
1595
1596 /* Define a surface based on the parameters. */
1597 ret = vmw_surface_gb_priv_define(dev,
1598 size,
1599 svga3d_flags_64,
1600 req->base.format,
1601 req->base.drm_surface_flags &
1602 drm_vmw_surface_flag_scanout,
1603 req->base.mip_levels,
1604 req->base.multisample_count,
1605 req->base.array_size,
1606 req->base.base_size,
1607 req->multisample_pattern,
1608 req->quality_level,
1609 &srf);
1610 if (unlikely(ret != 0))
1611 return ret;
1612
1613 user_srf = container_of(srf, struct vmw_user_surface, srf);
1614 if (drm_is_primary_client(file_priv))
1615 user_srf->master = drm_master_get(file_priv->master);
1616
1617 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1618 if (unlikely(ret != 0))
1619 return ret;
1620
1621 res = &user_srf->srf.res;
1622
1623 if (req->base.buffer_handle != SVGA3D_INVALID_ID) {
1624 ret = vmw_user_bo_lookup(tfile, req->base.buffer_handle,
1625 &res->backup,
1626 &user_srf->backup_base);
1627 if (ret == 0) {
1628 if (res->backup->base.num_pages * PAGE_SIZE <
1629 res->backup_size) {
1630 VMW_DEBUG_USER("Surface backup buffer too small.\n");
1631 vmw_bo_unreference(&res->backup);
1632 ret = -EINVAL;
1633 goto out_unlock;
1634 } else {
1635 backup_handle = req->base.buffer_handle;
1636 }
1637 }
1638 } else if (req->base.drm_surface_flags &
1639 drm_vmw_surface_flag_create_buffer)
1640 ret = vmw_user_bo_alloc(dev_priv, tfile,
1641 res->backup_size,
1642 req->base.drm_surface_flags &
1643 drm_vmw_surface_flag_shareable,
1644 &backup_handle,
1645 &res->backup,
1646 &user_srf->backup_base);
1647
1648 if (unlikely(ret != 0)) {
1649 vmw_resource_unreference(&res);
1650 goto out_unlock;
1651 }
1652
1653 tmp = vmw_resource_reference(res);
1654 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
1655 req->base.drm_surface_flags &
1656 drm_vmw_surface_flag_shareable,
1657 VMW_RES_SURFACE,
1658 &vmw_user_surface_base_release, NULL);
1659
1660 if (unlikely(ret != 0)) {
1661 vmw_resource_unreference(&tmp);
1662 vmw_resource_unreference(&res);
1663 goto out_unlock;
1664 }
1665
1666 rep->handle = user_srf->prime.base.handle;
1667 rep->backup_size = res->backup_size;
1668 if (res->backup) {
1669 rep->buffer_map_handle =
1670 drm_vma_node_offset_addr(&res->backup->base.base.vma_node);
1671 rep->buffer_size = res->backup->base.num_pages * PAGE_SIZE;
1672 rep->buffer_handle = backup_handle;
1673 } else {
1674 rep->buffer_map_handle = 0;
1675 rep->buffer_size = 0;
1676 rep->buffer_handle = SVGA3D_INVALID_ID;
1677 }
1678
1679 vmw_resource_unreference(&res);
1680
1681out_unlock:
1682 ttm_read_unlock(&dev_priv->reservation_sem);
1683 return ret;
1684}
1685
1686/**
1687 * vmw_gb_surface_reference_internal - Ioctl function implementing
1688 * the user surface reference functionality.
1689 *
1690 * @dev: Pointer to a struct drm_device.
1691 * @req: Pointer to user-space request surface arg.
1692 * @rep: Pointer to response to user-space.
1693 * @file_priv: Pointer to a drm file private structure.
1694 */
1695static int
1696vmw_gb_surface_reference_internal(struct drm_device *dev,
1697 struct drm_vmw_surface_arg *req,
1698 struct drm_vmw_gb_surface_ref_ext_rep *rep,
1699 struct drm_file *file_priv)
1700{
1701 struct vmw_private *dev_priv = vmw_priv(dev);
1702 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1703 struct vmw_surface *srf;
1704 struct vmw_user_surface *user_srf;
1705 struct ttm_base_object *base;
1706 uint32_t backup_handle;
1707 int ret = -EINVAL;
1708
1709 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
1710 req->handle_type, &base);
1711 if (unlikely(ret != 0))
1712 return ret;
1713
1714 user_srf = container_of(base, struct vmw_user_surface, prime.base);
1715 srf = &user_srf->srf;
1716 if (!srf->res.backup) {
1717 DRM_ERROR("Shared GB surface is missing a backup buffer.\n");
1718 goto out_bad_resource;
1719 }
1720
1721 mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
1722 ret = vmw_user_bo_reference(tfile, srf->res.backup, &backup_handle);
1723 mutex_unlock(&dev_priv->cmdbuf_mutex);
1724
1725 if (unlikely(ret != 0)) {
1726 DRM_ERROR("Could not add a reference to a GB surface "
1727 "backup buffer.\n");
1728 (void) ttm_ref_object_base_unref(tfile, base->handle,
1729 TTM_REF_USAGE);
1730 goto out_bad_resource;
1731 }
1732
1733 rep->creq.base.svga3d_flags = SVGA3D_FLAGS_LOWER_32(srf->flags);
1734 rep->creq.base.format = srf->format;
1735 rep->creq.base.mip_levels = srf->mip_levels[0];
1736 rep->creq.base.drm_surface_flags = 0;
1737 rep->creq.base.multisample_count = srf->multisample_count;
1738 rep->creq.base.autogen_filter = srf->autogen_filter;
1739 rep->creq.base.array_size = srf->array_size;
1740 rep->creq.base.buffer_handle = backup_handle;
1741 rep->creq.base.base_size = srf->base_size;
1742 rep->crep.handle = user_srf->prime.base.handle;
1743 rep->crep.backup_size = srf->res.backup_size;
1744 rep->crep.buffer_handle = backup_handle;
1745 rep->crep.buffer_map_handle =
1746 drm_vma_node_offset_addr(&srf->res.backup->base.base.vma_node);
1747 rep->crep.buffer_size = srf->res.backup->base.num_pages * PAGE_SIZE;
1748
1749 rep->creq.version = drm_vmw_gb_surface_v1;
1750 rep->creq.svga3d_flags_upper_32_bits =
1751 SVGA3D_FLAGS_UPPER_32(srf->flags);
1752 rep->creq.multisample_pattern = srf->multisample_pattern;
1753 rep->creq.quality_level = srf->quality_level;
1754 rep->creq.must_be_zero = 0;
1755
1756out_bad_resource:
1757 ttm_base_object_unref(&base);
1758
1759 return ret;
1760}