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1/**************************************************************************
2 *
3 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include <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
37/**
38 * struct vmw_user_surface - User-space visible surface resource
39 *
40 * @base: The TTM base object handling user-space visibility.
41 * @srf: The surface metadata.
42 * @size: TTM accounting size for the surface.
43 * @master: master of the creating client. Used for security check.
44 */
45struct vmw_user_surface {
46 struct ttm_prime_object prime;
47 struct vmw_surface srf;
48 uint32_t size;
49 struct drm_master *master;
50 struct ttm_base_object *backup_base;
51};
52
53/**
54 * struct vmw_surface_offset - Backing store mip level offset info
55 *
56 * @face: Surface face.
57 * @mip: Mip level.
58 * @bo_offset: Offset into backing store of this mip level.
59 *
60 */
61struct vmw_surface_offset {
62 uint32_t face;
63 uint32_t mip;
64 uint32_t bo_offset;
65};
66
67static void vmw_user_surface_free(struct vmw_resource *res);
68static struct vmw_resource *
69vmw_user_surface_base_to_res(struct ttm_base_object *base);
70static int vmw_legacy_srf_bind(struct vmw_resource *res,
71 struct ttm_validate_buffer *val_buf);
72static int vmw_legacy_srf_unbind(struct vmw_resource *res,
73 bool readback,
74 struct ttm_validate_buffer *val_buf);
75static int vmw_legacy_srf_create(struct vmw_resource *res);
76static int vmw_legacy_srf_destroy(struct vmw_resource *res);
77static int vmw_gb_surface_create(struct vmw_resource *res);
78static int vmw_gb_surface_bind(struct vmw_resource *res,
79 struct ttm_validate_buffer *val_buf);
80static int vmw_gb_surface_unbind(struct vmw_resource *res,
81 bool readback,
82 struct ttm_validate_buffer *val_buf);
83static int vmw_gb_surface_destroy(struct vmw_resource *res);
84
85
86static const struct vmw_user_resource_conv user_surface_conv = {
87 .object_type = VMW_RES_SURFACE,
88 .base_obj_to_res = vmw_user_surface_base_to_res,
89 .res_free = vmw_user_surface_free
90};
91
92const struct vmw_user_resource_conv *user_surface_converter =
93 &user_surface_conv;
94
95
96static uint64_t vmw_user_surface_size;
97
98static const struct vmw_res_func vmw_legacy_surface_func = {
99 .res_type = vmw_res_surface,
100 .needs_backup = false,
101 .may_evict = true,
102 .type_name = "legacy surfaces",
103 .backup_placement = &vmw_srf_placement,
104 .create = &vmw_legacy_srf_create,
105 .destroy = &vmw_legacy_srf_destroy,
106 .bind = &vmw_legacy_srf_bind,
107 .unbind = &vmw_legacy_srf_unbind
108};
109
110static const struct vmw_res_func vmw_gb_surface_func = {
111 .res_type = vmw_res_surface,
112 .needs_backup = true,
113 .may_evict = true,
114 .type_name = "guest backed surfaces",
115 .backup_placement = &vmw_mob_placement,
116 .create = vmw_gb_surface_create,
117 .destroy = vmw_gb_surface_destroy,
118 .bind = vmw_gb_surface_bind,
119 .unbind = vmw_gb_surface_unbind
120};
121
122/**
123 * struct vmw_surface_dma - SVGA3D DMA command
124 */
125struct vmw_surface_dma {
126 SVGA3dCmdHeader header;
127 SVGA3dCmdSurfaceDMA body;
128 SVGA3dCopyBox cb;
129 SVGA3dCmdSurfaceDMASuffix suffix;
130};
131
132/**
133 * struct vmw_surface_define - SVGA3D Surface Define command
134 */
135struct vmw_surface_define {
136 SVGA3dCmdHeader header;
137 SVGA3dCmdDefineSurface body;
138};
139
140/**
141 * struct vmw_surface_destroy - SVGA3D Surface Destroy command
142 */
143struct vmw_surface_destroy {
144 SVGA3dCmdHeader header;
145 SVGA3dCmdDestroySurface body;
146};
147
148
149/**
150 * vmw_surface_dma_size - Compute fifo size for a dma command.
151 *
152 * @srf: Pointer to a struct vmw_surface
153 *
154 * Computes the required size for a surface dma command for backup or
155 * restoration of the surface represented by @srf.
156 */
157static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
158{
159 return srf->num_sizes * sizeof(struct vmw_surface_dma);
160}
161
162
163/**
164 * vmw_surface_define_size - Compute fifo size for a surface define command.
165 *
166 * @srf: Pointer to a struct vmw_surface
167 *
168 * Computes the required size for a surface define command for the definition
169 * of the surface represented by @srf.
170 */
171static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
172{
173 return sizeof(struct vmw_surface_define) + srf->num_sizes *
174 sizeof(SVGA3dSize);
175}
176
177
178/**
179 * vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
180 *
181 * Computes the required size for a surface destroy command for the destruction
182 * of a hw surface.
183 */
184static inline uint32_t vmw_surface_destroy_size(void)
185{
186 return sizeof(struct vmw_surface_destroy);
187}
188
189/**
190 * vmw_surface_destroy_encode - Encode a surface_destroy command.
191 *
192 * @id: The surface id
193 * @cmd_space: Pointer to memory area in which the commands should be encoded.
194 */
195static void vmw_surface_destroy_encode(uint32_t id,
196 void *cmd_space)
197{
198 struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
199 cmd_space;
200
201 cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
202 cmd->header.size = sizeof(cmd->body);
203 cmd->body.sid = id;
204}
205
206/**
207 * vmw_surface_define_encode - Encode a surface_define command.
208 *
209 * @srf: Pointer to a struct vmw_surface object.
210 * @cmd_space: Pointer to memory area in which the commands should be encoded.
211 */
212static void vmw_surface_define_encode(const struct vmw_surface *srf,
213 void *cmd_space)
214{
215 struct vmw_surface_define *cmd = (struct vmw_surface_define *)
216 cmd_space;
217 struct drm_vmw_size *src_size;
218 SVGA3dSize *cmd_size;
219 uint32_t cmd_len;
220 int i;
221
222 cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
223
224 cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
225 cmd->header.size = cmd_len;
226 cmd->body.sid = srf->res.id;
227 cmd->body.surfaceFlags = srf->flags;
228 cmd->body.format = srf->format;
229 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
230 cmd->body.face[i].numMipLevels = srf->mip_levels[i];
231
232 cmd += 1;
233 cmd_size = (SVGA3dSize *) cmd;
234 src_size = srf->sizes;
235
236 for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
237 cmd_size->width = src_size->width;
238 cmd_size->height = src_size->height;
239 cmd_size->depth = src_size->depth;
240 }
241}
242
243/**
244 * vmw_surface_dma_encode - Encode a surface_dma command.
245 *
246 * @srf: Pointer to a struct vmw_surface object.
247 * @cmd_space: Pointer to memory area in which the commands should be encoded.
248 * @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
249 * should be placed or read from.
250 * @to_surface: Boolean whether to DMA to the surface or from the surface.
251 */
252static void vmw_surface_dma_encode(struct vmw_surface *srf,
253 void *cmd_space,
254 const SVGAGuestPtr *ptr,
255 bool to_surface)
256{
257 uint32_t i;
258 struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
259 const struct svga3d_surface_desc *desc =
260 svga3dsurface_get_desc(srf->format);
261
262 for (i = 0; i < srf->num_sizes; ++i) {
263 SVGA3dCmdHeader *header = &cmd->header;
264 SVGA3dCmdSurfaceDMA *body = &cmd->body;
265 SVGA3dCopyBox *cb = &cmd->cb;
266 SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
267 const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
268 const struct drm_vmw_size *cur_size = &srf->sizes[i];
269
270 header->id = SVGA_3D_CMD_SURFACE_DMA;
271 header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
272
273 body->guest.ptr = *ptr;
274 body->guest.ptr.offset += cur_offset->bo_offset;
275 body->guest.pitch = svga3dsurface_calculate_pitch(desc,
276 cur_size);
277 body->host.sid = srf->res.id;
278 body->host.face = cur_offset->face;
279 body->host.mipmap = cur_offset->mip;
280 body->transfer = ((to_surface) ? SVGA3D_WRITE_HOST_VRAM :
281 SVGA3D_READ_HOST_VRAM);
282 cb->x = 0;
283 cb->y = 0;
284 cb->z = 0;
285 cb->srcx = 0;
286 cb->srcy = 0;
287 cb->srcz = 0;
288 cb->w = cur_size->width;
289 cb->h = cur_size->height;
290 cb->d = cur_size->depth;
291
292 suffix->suffixSize = sizeof(*suffix);
293 suffix->maximumOffset =
294 svga3dsurface_get_image_buffer_size(desc, cur_size,
295 body->guest.pitch);
296 suffix->flags.discard = 0;
297 suffix->flags.unsynchronized = 0;
298 suffix->flags.reserved = 0;
299 ++cmd;
300 }
301};
302
303
304/**
305 * vmw_hw_surface_destroy - destroy a Device surface
306 *
307 * @res: Pointer to a struct vmw_resource embedded in a struct
308 * vmw_surface.
309 *
310 * Destroys a the device surface associated with a struct vmw_surface if
311 * any, and adjusts accounting and resource count accordingly.
312 */
313static void vmw_hw_surface_destroy(struct vmw_resource *res)
314{
315
316 struct vmw_private *dev_priv = res->dev_priv;
317 struct vmw_surface *srf;
318 void *cmd;
319
320 if (res->func->destroy == vmw_gb_surface_destroy) {
321 (void) vmw_gb_surface_destroy(res);
322 return;
323 }
324
325 if (res->id != -1) {
326
327 cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
328 if (unlikely(!cmd)) {
329 DRM_ERROR("Failed reserving FIFO space for surface "
330 "destruction.\n");
331 return;
332 }
333
334 vmw_surface_destroy_encode(res->id, cmd);
335 vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
336
337 /*
338 * used_memory_size_atomic, or separate lock
339 * to avoid taking dev_priv::cmdbuf_mutex in
340 * the destroy path.
341 */
342
343 mutex_lock(&dev_priv->cmdbuf_mutex);
344 srf = vmw_res_to_srf(res);
345 dev_priv->used_memory_size -= res->backup_size;
346 mutex_unlock(&dev_priv->cmdbuf_mutex);
347 }
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)) {
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 vmw_fifo_resource_inc(dev_priv);
410
411 /*
412 * Surface memory usage accounting.
413 */
414
415 dev_priv->used_memory_size += res->backup_size;
416 return 0;
417
418out_no_fifo:
419 vmw_resource_release_id(res);
420out_no_id:
421 return ret;
422}
423
424/**
425 * vmw_legacy_srf_dma - Copy backup data to or from a legacy surface.
426 *
427 * @res: Pointer to a struct vmw_res embedded in a struct
428 * vmw_surface.
429 * @val_buf: Pointer to a struct ttm_validate_buffer containing
430 * information about the backup buffer.
431 * @bind: Boolean wether to DMA to the surface.
432 *
433 * Transfer backup data to or from a legacy surface as part of the
434 * validation process.
435 * May return other errors if the kernel is out of guest resources.
436 * The backup buffer will be fenced or idle upon successful completion,
437 * and if the surface needs persistent backup storage, the backup buffer
438 * will also be returned reserved iff @bind is true.
439 */
440static int vmw_legacy_srf_dma(struct vmw_resource *res,
441 struct ttm_validate_buffer *val_buf,
442 bool bind)
443{
444 SVGAGuestPtr ptr;
445 struct vmw_fence_obj *fence;
446 uint32_t submit_size;
447 struct vmw_surface *srf = vmw_res_to_srf(res);
448 uint8_t *cmd;
449 struct vmw_private *dev_priv = res->dev_priv;
450
451 BUG_ON(!val_buf->bo);
452 submit_size = vmw_surface_dma_size(srf);
453 cmd = vmw_fifo_reserve(dev_priv, submit_size);
454 if (unlikely(!cmd)) {
455 DRM_ERROR("Failed reserving FIFO space for surface "
456 "DMA.\n");
457 return -ENOMEM;
458 }
459 vmw_bo_get_guest_ptr(val_buf->bo, &ptr);
460 vmw_surface_dma_encode(srf, cmd, &ptr, bind);
461
462 vmw_fifo_commit(dev_priv, submit_size);
463
464 /*
465 * Create a fence object and fence the backup buffer.
466 */
467
468 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
469 &fence, NULL);
470
471 vmw_fence_single_bo(val_buf->bo, fence);
472
473 if (likely(fence != NULL))
474 vmw_fence_obj_unreference(&fence);
475
476 return 0;
477}
478
479/**
480 * vmw_legacy_srf_bind - Perform a legacy surface bind as part of the
481 * surface validation process.
482 *
483 * @res: Pointer to a struct vmw_res embedded in a struct
484 * vmw_surface.
485 * @val_buf: Pointer to a struct ttm_validate_buffer containing
486 * information about the backup buffer.
487 *
488 * This function will copy backup data to the surface if the
489 * backup buffer is dirty.
490 */
491static int vmw_legacy_srf_bind(struct vmw_resource *res,
492 struct ttm_validate_buffer *val_buf)
493{
494 if (!res->backup_dirty)
495 return 0;
496
497 return vmw_legacy_srf_dma(res, val_buf, true);
498}
499
500
501/**
502 * vmw_legacy_srf_unbind - Perform a legacy surface unbind as part of the
503 * surface eviction process.
504 *
505 * @res: Pointer to a struct vmw_res embedded in a struct
506 * vmw_surface.
507 * @val_buf: Pointer to a struct ttm_validate_buffer containing
508 * information about the backup buffer.
509 *
510 * This function will copy backup data from the surface.
511 */
512static int vmw_legacy_srf_unbind(struct vmw_resource *res,
513 bool readback,
514 struct ttm_validate_buffer *val_buf)
515{
516 if (unlikely(readback))
517 return vmw_legacy_srf_dma(res, val_buf, false);
518 return 0;
519}
520
521/**
522 * vmw_legacy_srf_destroy - Destroy a device surface as part of a
523 * resource eviction process.
524 *
525 * @res: Pointer to a struct vmw_res embedded in a struct
526 * vmw_surface.
527 */
528static int vmw_legacy_srf_destroy(struct vmw_resource *res)
529{
530 struct vmw_private *dev_priv = res->dev_priv;
531 uint32_t submit_size;
532 uint8_t *cmd;
533
534 BUG_ON(res->id == -1);
535
536 /*
537 * Encode the dma- and surface destroy commands.
538 */
539
540 submit_size = vmw_surface_destroy_size();
541 cmd = vmw_fifo_reserve(dev_priv, submit_size);
542 if (unlikely(!cmd)) {
543 DRM_ERROR("Failed reserving FIFO space for surface "
544 "eviction.\n");
545 return -ENOMEM;
546 }
547
548 vmw_surface_destroy_encode(res->id, cmd);
549 vmw_fifo_commit(dev_priv, submit_size);
550
551 /*
552 * Surface memory usage accounting.
553 */
554
555 dev_priv->used_memory_size -= res->backup_size;
556
557 /*
558 * Release the surface ID.
559 */
560
561 vmw_resource_release_id(res);
562 vmw_fifo_resource_dec(dev_priv);
563
564 return 0;
565}
566
567
568/**
569 * vmw_surface_init - initialize a struct vmw_surface
570 *
571 * @dev_priv: Pointer to a device private struct.
572 * @srf: Pointer to the struct vmw_surface to initialize.
573 * @res_free: Pointer to a resource destructor used to free
574 * the object.
575 */
576static int vmw_surface_init(struct vmw_private *dev_priv,
577 struct vmw_surface *srf,
578 void (*res_free) (struct vmw_resource *res))
579{
580 int ret;
581 struct vmw_resource *res = &srf->res;
582
583 BUG_ON(!res_free);
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 res_free(res);
590 return ret;
591 }
592
593 /*
594 * The surface won't be visible to hardware until a
595 * surface validate.
596 */
597
598 INIT_LIST_HEAD(&srf->view_list);
599 vmw_resource_activate(res, vmw_hw_surface_destroy);
600 return ret;
601}
602
603/**
604 * vmw_user_surface_base_to_res - TTM base object to resource converter for
605 * user visible surfaces
606 *
607 * @base: Pointer to a TTM base object
608 *
609 * Returns the struct vmw_resource embedded in a struct vmw_surface
610 * for the user-visible object identified by the TTM base object @base.
611 */
612static struct vmw_resource *
613vmw_user_surface_base_to_res(struct ttm_base_object *base)
614{
615 return &(container_of(base, struct vmw_user_surface,
616 prime.base)->srf.res);
617}
618
619/**
620 * vmw_user_surface_free - User visible surface resource destructor
621 *
622 * @res: A struct vmw_resource embedded in a struct vmw_surface.
623 */
624static void vmw_user_surface_free(struct vmw_resource *res)
625{
626 struct vmw_surface *srf = vmw_res_to_srf(res);
627 struct vmw_user_surface *user_srf =
628 container_of(srf, struct vmw_user_surface, srf);
629 struct vmw_private *dev_priv = srf->res.dev_priv;
630 uint32_t size = user_srf->size;
631
632 if (user_srf->master)
633 drm_master_put(&user_srf->master);
634 kfree(srf->offsets);
635 kfree(srf->sizes);
636 kfree(srf->snooper.image);
637 ttm_prime_object_kfree(user_srf, prime);
638 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
639}
640
641/**
642 * vmw_user_surface_free - User visible surface TTM base object destructor
643 *
644 * @p_base: Pointer to a pointer to a TTM base object
645 * embedded in a struct vmw_user_surface.
646 *
647 * Drops the base object's reference on its resource, and the
648 * pointer pointed to by *p_base is set to NULL.
649 */
650static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
651{
652 struct ttm_base_object *base = *p_base;
653 struct vmw_user_surface *user_srf =
654 container_of(base, struct vmw_user_surface, prime.base);
655 struct vmw_resource *res = &user_srf->srf.res;
656
657 *p_base = NULL;
658 if (user_srf->backup_base)
659 ttm_base_object_unref(&user_srf->backup_base);
660 vmw_resource_unreference(&res);
661}
662
663/**
664 * vmw_user_surface_destroy_ioctl - Ioctl function implementing
665 * the user surface destroy functionality.
666 *
667 * @dev: Pointer to a struct drm_device.
668 * @data: Pointer to data copied from / to user-space.
669 * @file_priv: Pointer to a drm file private structure.
670 */
671int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
672 struct drm_file *file_priv)
673{
674 struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
675 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
676
677 return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
678}
679
680/**
681 * vmw_user_surface_define_ioctl - Ioctl function implementing
682 * the user surface define functionality.
683 *
684 * @dev: Pointer to a struct drm_device.
685 * @data: Pointer to data copied from / to user-space.
686 * @file_priv: Pointer to a drm file private structure.
687 */
688int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
689 struct drm_file *file_priv)
690{
691 struct vmw_private *dev_priv = vmw_priv(dev);
692 struct vmw_user_surface *user_srf;
693 struct vmw_surface *srf;
694 struct vmw_resource *res;
695 struct vmw_resource *tmp;
696 union drm_vmw_surface_create_arg *arg =
697 (union drm_vmw_surface_create_arg *)data;
698 struct drm_vmw_surface_create_req *req = &arg->req;
699 struct drm_vmw_surface_arg *rep = &arg->rep;
700 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
701 struct ttm_operation_ctx ctx = {
702 .interruptible = true,
703 .no_wait_gpu = false
704 };
705 int ret;
706 int i, j;
707 uint32_t cur_bo_offset;
708 struct drm_vmw_size *cur_size;
709 struct vmw_surface_offset *cur_offset;
710 uint32_t num_sizes;
711 uint32_t size;
712 const struct svga3d_surface_desc *desc;
713
714 if (unlikely(vmw_user_surface_size == 0))
715 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
716 128;
717
718 num_sizes = 0;
719 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
720 if (req->mip_levels[i] > DRM_VMW_MAX_MIP_LEVELS)
721 return -EINVAL;
722 num_sizes += req->mip_levels[i];
723 }
724
725 if (num_sizes > DRM_VMW_MAX_SURFACE_FACES * DRM_VMW_MAX_MIP_LEVELS ||
726 num_sizes == 0)
727 return -EINVAL;
728
729 size = vmw_user_surface_size + 128 +
730 ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
731 ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
732
733
734 desc = svga3dsurface_get_desc(req->format);
735 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
736 DRM_ERROR("Invalid surface format for surface creation.\n");
737 DRM_ERROR("Format requested is: %d\n", req->format);
738 return -EINVAL;
739 }
740
741 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
742 if (unlikely(ret != 0))
743 return ret;
744
745 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
746 size, &ctx);
747 if (unlikely(ret != 0)) {
748 if (ret != -ERESTARTSYS)
749 DRM_ERROR("Out of graphics memory for surface"
750 " creation.\n");
751 goto out_unlock;
752 }
753
754 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
755 if (unlikely(!user_srf)) {
756 ret = -ENOMEM;
757 goto out_no_user_srf;
758 }
759
760 srf = &user_srf->srf;
761 res = &srf->res;
762
763 srf->flags = req->flags;
764 srf->format = req->format;
765 srf->scanout = req->scanout;
766
767 memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
768 srf->num_sizes = num_sizes;
769 user_srf->size = size;
770 srf->sizes = memdup_user((struct drm_vmw_size __user *)(unsigned long)
771 req->size_addr,
772 sizeof(*srf->sizes) * srf->num_sizes);
773 if (IS_ERR(srf->sizes)) {
774 ret = PTR_ERR(srf->sizes);
775 goto out_no_sizes;
776 }
777 srf->offsets = kmalloc_array(srf->num_sizes,
778 sizeof(*srf->offsets),
779 GFP_KERNEL);
780 if (unlikely(!srf->offsets)) {
781 ret = -ENOMEM;
782 goto out_no_offsets;
783 }
784
785 srf->base_size = *srf->sizes;
786 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
787 srf->multisample_count = 0;
788
789 cur_bo_offset = 0;
790 cur_offset = srf->offsets;
791 cur_size = srf->sizes;
792
793 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
794 for (j = 0; j < srf->mip_levels[i]; ++j) {
795 uint32_t stride = svga3dsurface_calculate_pitch
796 (desc, cur_size);
797
798 cur_offset->face = i;
799 cur_offset->mip = j;
800 cur_offset->bo_offset = cur_bo_offset;
801 cur_bo_offset += svga3dsurface_get_image_buffer_size
802 (desc, cur_size, stride);
803 ++cur_offset;
804 ++cur_size;
805 }
806 }
807 res->backup_size = cur_bo_offset;
808 if (srf->scanout &&
809 srf->num_sizes == 1 &&
810 srf->sizes[0].width == 64 &&
811 srf->sizes[0].height == 64 &&
812 srf->format == SVGA3D_A8R8G8B8) {
813
814 srf->snooper.image = kzalloc(64 * 64 * 4, GFP_KERNEL);
815 if (!srf->snooper.image) {
816 DRM_ERROR("Failed to allocate cursor_image\n");
817 ret = -ENOMEM;
818 goto out_no_copy;
819 }
820 } else {
821 srf->snooper.image = NULL;
822 }
823
824 user_srf->prime.base.shareable = false;
825 user_srf->prime.base.tfile = NULL;
826 if (drm_is_primary_client(file_priv))
827 user_srf->master = drm_master_get(file_priv->master);
828
829 /**
830 * From this point, the generic resource management functions
831 * destroy the object on failure.
832 */
833
834 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
835 if (unlikely(ret != 0))
836 goto out_unlock;
837
838 /*
839 * A gb-aware client referencing a shared surface will
840 * expect a backup buffer to be present.
841 */
842 if (dev_priv->has_mob && req->shareable) {
843 uint32_t backup_handle;
844
845 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
846 res->backup_size,
847 true,
848 &backup_handle,
849 &res->backup,
850 &user_srf->backup_base);
851 if (unlikely(ret != 0)) {
852 vmw_resource_unreference(&res);
853 goto out_unlock;
854 }
855 }
856
857 tmp = vmw_resource_reference(&srf->res);
858 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
859 req->shareable, VMW_RES_SURFACE,
860 &vmw_user_surface_base_release, NULL);
861
862 if (unlikely(ret != 0)) {
863 vmw_resource_unreference(&tmp);
864 vmw_resource_unreference(&res);
865 goto out_unlock;
866 }
867
868 rep->sid = user_srf->prime.base.hash.key;
869 vmw_resource_unreference(&res);
870
871 ttm_read_unlock(&dev_priv->reservation_sem);
872 return 0;
873out_no_copy:
874 kfree(srf->offsets);
875out_no_offsets:
876 kfree(srf->sizes);
877out_no_sizes:
878 ttm_prime_object_kfree(user_srf, prime);
879out_no_user_srf:
880 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
881out_unlock:
882 ttm_read_unlock(&dev_priv->reservation_sem);
883 return ret;
884}
885
886
887static int
888vmw_surface_handle_reference(struct vmw_private *dev_priv,
889 struct drm_file *file_priv,
890 uint32_t u_handle,
891 enum drm_vmw_handle_type handle_type,
892 struct ttm_base_object **base_p)
893{
894 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
895 struct vmw_user_surface *user_srf;
896 uint32_t handle;
897 struct ttm_base_object *base;
898 int ret;
899 bool require_exist = false;
900
901 if (handle_type == DRM_VMW_HANDLE_PRIME) {
902 ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
903 if (unlikely(ret != 0))
904 return ret;
905 } else {
906 if (unlikely(drm_is_render_client(file_priv)))
907 require_exist = true;
908
909 if (READ_ONCE(vmw_fpriv(file_priv)->locked_master)) {
910 DRM_ERROR("Locked master refused legacy "
911 "surface reference.\n");
912 return -EACCES;
913 }
914
915 handle = u_handle;
916 }
917
918 ret = -EINVAL;
919 base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
920 if (unlikely(!base)) {
921 DRM_ERROR("Could not find surface to reference.\n");
922 goto out_no_lookup;
923 }
924
925 if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
926 DRM_ERROR("Referenced object is not a surface.\n");
927 goto out_bad_resource;
928 }
929
930 if (handle_type != DRM_VMW_HANDLE_PRIME) {
931 user_srf = container_of(base, struct vmw_user_surface,
932 prime.base);
933
934 /*
935 * Make sure the surface creator has the same
936 * authenticating master, or is already registered with us.
937 */
938 if (drm_is_primary_client(file_priv) &&
939 user_srf->master != file_priv->master)
940 require_exist = true;
941
942 ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL,
943 require_exist);
944 if (unlikely(ret != 0)) {
945 DRM_ERROR("Could not add a reference to a surface.\n");
946 goto out_bad_resource;
947 }
948 }
949
950 *base_p = base;
951 return 0;
952
953out_bad_resource:
954 ttm_base_object_unref(&base);
955out_no_lookup:
956 if (handle_type == DRM_VMW_HANDLE_PRIME)
957 (void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
958
959 return ret;
960}
961
962/**
963 * vmw_user_surface_define_ioctl - Ioctl function implementing
964 * the user surface reference functionality.
965 *
966 * @dev: Pointer to a struct drm_device.
967 * @data: Pointer to data copied from / to user-space.
968 * @file_priv: Pointer to a drm file private structure.
969 */
970int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
971 struct drm_file *file_priv)
972{
973 struct vmw_private *dev_priv = vmw_priv(dev);
974 union drm_vmw_surface_reference_arg *arg =
975 (union drm_vmw_surface_reference_arg *)data;
976 struct drm_vmw_surface_arg *req = &arg->req;
977 struct drm_vmw_surface_create_req *rep = &arg->rep;
978 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
979 struct vmw_surface *srf;
980 struct vmw_user_surface *user_srf;
981 struct drm_vmw_size __user *user_sizes;
982 struct ttm_base_object *base;
983 int ret;
984
985 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
986 req->handle_type, &base);
987 if (unlikely(ret != 0))
988 return ret;
989
990 user_srf = container_of(base, struct vmw_user_surface, prime.base);
991 srf = &user_srf->srf;
992
993 rep->flags = srf->flags;
994 rep->format = srf->format;
995 memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
996 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
997 rep->size_addr;
998
999 if (user_sizes)
1000 ret = copy_to_user(user_sizes, &srf->base_size,
1001 sizeof(srf->base_size));
1002 if (unlikely(ret != 0)) {
1003 DRM_ERROR("copy_to_user failed %p %u\n",
1004 user_sizes, srf->num_sizes);
1005 ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
1006 ret = -EFAULT;
1007 }
1008
1009 ttm_base_object_unref(&base);
1010
1011 return ret;
1012}
1013
1014/**
1015 * vmw_surface_define_encode - Encode a surface_define command.
1016 *
1017 * @srf: Pointer to a struct vmw_surface object.
1018 * @cmd_space: Pointer to memory area in which the commands should be encoded.
1019 */
1020static int vmw_gb_surface_create(struct vmw_resource *res)
1021{
1022 struct vmw_private *dev_priv = res->dev_priv;
1023 struct vmw_surface *srf = vmw_res_to_srf(res);
1024 uint32_t cmd_len, cmd_id, submit_len;
1025 int ret;
1026 struct {
1027 SVGA3dCmdHeader header;
1028 SVGA3dCmdDefineGBSurface body;
1029 } *cmd;
1030 struct {
1031 SVGA3dCmdHeader header;
1032 SVGA3dCmdDefineGBSurface_v2 body;
1033 } *cmd2;
1034
1035 if (likely(res->id != -1))
1036 return 0;
1037
1038 vmw_fifo_resource_inc(dev_priv);
1039 ret = vmw_resource_alloc_id(res);
1040 if (unlikely(ret != 0)) {
1041 DRM_ERROR("Failed to allocate a surface id.\n");
1042 goto out_no_id;
1043 }
1044
1045 if (unlikely(res->id >= VMWGFX_NUM_GB_SURFACE)) {
1046 ret = -EBUSY;
1047 goto out_no_fifo;
1048 }
1049
1050 if (srf->array_size > 0) {
1051 /* has_dx checked on creation time. */
1052 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V2;
1053 cmd_len = sizeof(cmd2->body);
1054 submit_len = sizeof(*cmd2);
1055 } else {
1056 cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE;
1057 cmd_len = sizeof(cmd->body);
1058 submit_len = sizeof(*cmd);
1059 }
1060
1061 cmd = vmw_fifo_reserve(dev_priv, submit_len);
1062 cmd2 = (typeof(cmd2))cmd;
1063 if (unlikely(!cmd)) {
1064 DRM_ERROR("Failed reserving FIFO space for surface "
1065 "creation.\n");
1066 ret = -ENOMEM;
1067 goto out_no_fifo;
1068 }
1069
1070 if (srf->array_size > 0) {
1071 cmd2->header.id = cmd_id;
1072 cmd2->header.size = cmd_len;
1073 cmd2->body.sid = srf->res.id;
1074 cmd2->body.surfaceFlags = srf->flags;
1075 cmd2->body.format = cpu_to_le32(srf->format);
1076 cmd2->body.numMipLevels = srf->mip_levels[0];
1077 cmd2->body.multisampleCount = srf->multisample_count;
1078 cmd2->body.autogenFilter = srf->autogen_filter;
1079 cmd2->body.size.width = srf->base_size.width;
1080 cmd2->body.size.height = srf->base_size.height;
1081 cmd2->body.size.depth = srf->base_size.depth;
1082 cmd2->body.arraySize = srf->array_size;
1083 } else {
1084 cmd->header.id = cmd_id;
1085 cmd->header.size = cmd_len;
1086 cmd->body.sid = srf->res.id;
1087 cmd->body.surfaceFlags = srf->flags;
1088 cmd->body.format = cpu_to_le32(srf->format);
1089 cmd->body.numMipLevels = srf->mip_levels[0];
1090 cmd->body.multisampleCount = srf->multisample_count;
1091 cmd->body.autogenFilter = srf->autogen_filter;
1092 cmd->body.size.width = srf->base_size.width;
1093 cmd->body.size.height = srf->base_size.height;
1094 cmd->body.size.depth = srf->base_size.depth;
1095 }
1096
1097 vmw_fifo_commit(dev_priv, submit_len);
1098
1099 return 0;
1100
1101out_no_fifo:
1102 vmw_resource_release_id(res);
1103out_no_id:
1104 vmw_fifo_resource_dec(dev_priv);
1105 return ret;
1106}
1107
1108
1109static int vmw_gb_surface_bind(struct vmw_resource *res,
1110 struct ttm_validate_buffer *val_buf)
1111{
1112 struct vmw_private *dev_priv = res->dev_priv;
1113 struct {
1114 SVGA3dCmdHeader header;
1115 SVGA3dCmdBindGBSurface body;
1116 } *cmd1;
1117 struct {
1118 SVGA3dCmdHeader header;
1119 SVGA3dCmdUpdateGBSurface body;
1120 } *cmd2;
1121 uint32_t submit_size;
1122 struct ttm_buffer_object *bo = val_buf->bo;
1123
1124 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1125
1126 submit_size = sizeof(*cmd1) + (res->backup_dirty ? sizeof(*cmd2) : 0);
1127
1128 cmd1 = vmw_fifo_reserve(dev_priv, submit_size);
1129 if (unlikely(!cmd1)) {
1130 DRM_ERROR("Failed reserving FIFO space for surface "
1131 "binding.\n");
1132 return -ENOMEM;
1133 }
1134
1135 cmd1->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1136 cmd1->header.size = sizeof(cmd1->body);
1137 cmd1->body.sid = res->id;
1138 cmd1->body.mobid = bo->mem.start;
1139 if (res->backup_dirty) {
1140 cmd2 = (void *) &cmd1[1];
1141 cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_SURFACE;
1142 cmd2->header.size = sizeof(cmd2->body);
1143 cmd2->body.sid = res->id;
1144 res->backup_dirty = false;
1145 }
1146 vmw_fifo_commit(dev_priv, submit_size);
1147
1148 return 0;
1149}
1150
1151static int vmw_gb_surface_unbind(struct vmw_resource *res,
1152 bool readback,
1153 struct ttm_validate_buffer *val_buf)
1154{
1155 struct vmw_private *dev_priv = res->dev_priv;
1156 struct ttm_buffer_object *bo = val_buf->bo;
1157 struct vmw_fence_obj *fence;
1158
1159 struct {
1160 SVGA3dCmdHeader header;
1161 SVGA3dCmdReadbackGBSurface body;
1162 } *cmd1;
1163 struct {
1164 SVGA3dCmdHeader header;
1165 SVGA3dCmdInvalidateGBSurface body;
1166 } *cmd2;
1167 struct {
1168 SVGA3dCmdHeader header;
1169 SVGA3dCmdBindGBSurface body;
1170 } *cmd3;
1171 uint32_t submit_size;
1172 uint8_t *cmd;
1173
1174
1175 BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
1176
1177 submit_size = sizeof(*cmd3) + (readback ? sizeof(*cmd1) : sizeof(*cmd2));
1178 cmd = vmw_fifo_reserve(dev_priv, submit_size);
1179 if (unlikely(!cmd)) {
1180 DRM_ERROR("Failed reserving FIFO space for surface "
1181 "unbinding.\n");
1182 return -ENOMEM;
1183 }
1184
1185 if (readback) {
1186 cmd1 = (void *) cmd;
1187 cmd1->header.id = SVGA_3D_CMD_READBACK_GB_SURFACE;
1188 cmd1->header.size = sizeof(cmd1->body);
1189 cmd1->body.sid = res->id;
1190 cmd3 = (void *) &cmd1[1];
1191 } else {
1192 cmd2 = (void *) cmd;
1193 cmd2->header.id = SVGA_3D_CMD_INVALIDATE_GB_SURFACE;
1194 cmd2->header.size = sizeof(cmd2->body);
1195 cmd2->body.sid = res->id;
1196 cmd3 = (void *) &cmd2[1];
1197 }
1198
1199 cmd3->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
1200 cmd3->header.size = sizeof(cmd3->body);
1201 cmd3->body.sid = res->id;
1202 cmd3->body.mobid = SVGA3D_INVALID_ID;
1203
1204 vmw_fifo_commit(dev_priv, submit_size);
1205
1206 /*
1207 * Create a fence object and fence the backup buffer.
1208 */
1209
1210 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
1211 &fence, NULL);
1212
1213 vmw_fence_single_bo(val_buf->bo, fence);
1214
1215 if (likely(fence != NULL))
1216 vmw_fence_obj_unreference(&fence);
1217
1218 return 0;
1219}
1220
1221static int vmw_gb_surface_destroy(struct vmw_resource *res)
1222{
1223 struct vmw_private *dev_priv = res->dev_priv;
1224 struct vmw_surface *srf = vmw_res_to_srf(res);
1225 struct {
1226 SVGA3dCmdHeader header;
1227 SVGA3dCmdDestroyGBSurface body;
1228 } *cmd;
1229
1230 if (likely(res->id == -1))
1231 return 0;
1232
1233 mutex_lock(&dev_priv->binding_mutex);
1234 vmw_view_surface_list_destroy(dev_priv, &srf->view_list);
1235 vmw_binding_res_list_scrub(&res->binding_head);
1236
1237 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
1238 if (unlikely(!cmd)) {
1239 DRM_ERROR("Failed reserving FIFO space for surface "
1240 "destruction.\n");
1241 mutex_unlock(&dev_priv->binding_mutex);
1242 return -ENOMEM;
1243 }
1244
1245 cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SURFACE;
1246 cmd->header.size = sizeof(cmd->body);
1247 cmd->body.sid = res->id;
1248 vmw_fifo_commit(dev_priv, sizeof(*cmd));
1249 mutex_unlock(&dev_priv->binding_mutex);
1250 vmw_resource_release_id(res);
1251 vmw_fifo_resource_dec(dev_priv);
1252
1253 return 0;
1254}
1255
1256
1257/**
1258 * vmw_gb_surface_define_ioctl - Ioctl function implementing
1259 * the user surface define functionality.
1260 *
1261 * @dev: Pointer to a struct drm_device.
1262 * @data: Pointer to data copied from / to user-space.
1263 * @file_priv: Pointer to a drm file private structure.
1264 */
1265int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
1266 struct drm_file *file_priv)
1267{
1268 struct vmw_private *dev_priv = vmw_priv(dev);
1269 struct vmw_user_surface *user_srf;
1270 struct vmw_surface *srf;
1271 struct vmw_resource *res;
1272 struct vmw_resource *tmp;
1273 union drm_vmw_gb_surface_create_arg *arg =
1274 (union drm_vmw_gb_surface_create_arg *)data;
1275 struct drm_vmw_gb_surface_create_req *req = &arg->req;
1276 struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
1277 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1278 int ret;
1279 uint32_t size;
1280 uint32_t backup_handle = 0;
1281
1282 if (req->multisample_count != 0)
1283 return -EINVAL;
1284
1285 if (req->mip_levels > DRM_VMW_MAX_MIP_LEVELS)
1286 return -EINVAL;
1287
1288 if (unlikely(vmw_user_surface_size == 0))
1289 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
1290 128;
1291
1292 size = vmw_user_surface_size + 128;
1293
1294 /* Define a surface based on the parameters. */
1295 ret = vmw_surface_gb_priv_define(dev,
1296 size,
1297 req->svga3d_flags,
1298 req->format,
1299 req->drm_surface_flags & drm_vmw_surface_flag_scanout,
1300 req->mip_levels,
1301 req->multisample_count,
1302 req->array_size,
1303 req->base_size,
1304 &srf);
1305 if (unlikely(ret != 0))
1306 return ret;
1307
1308 user_srf = container_of(srf, struct vmw_user_surface, srf);
1309 if (drm_is_primary_client(file_priv))
1310 user_srf->master = drm_master_get(file_priv->master);
1311
1312 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1313 if (unlikely(ret != 0))
1314 return ret;
1315
1316 res = &user_srf->srf.res;
1317
1318
1319 if (req->buffer_handle != SVGA3D_INVALID_ID) {
1320 ret = vmw_user_dmabuf_lookup(tfile, req->buffer_handle,
1321 &res->backup,
1322 &user_srf->backup_base);
1323 if (ret == 0) {
1324 if (res->backup->base.num_pages * PAGE_SIZE <
1325 res->backup_size) {
1326 DRM_ERROR("Surface backup buffer is too small.\n");
1327 vmw_dmabuf_unreference(&res->backup);
1328 ret = -EINVAL;
1329 goto out_unlock;
1330 } else {
1331 backup_handle = req->buffer_handle;
1332 }
1333 }
1334 } else if (req->drm_surface_flags & drm_vmw_surface_flag_create_buffer)
1335 ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
1336 res->backup_size,
1337 req->drm_surface_flags &
1338 drm_vmw_surface_flag_shareable,
1339 &backup_handle,
1340 &res->backup,
1341 &user_srf->backup_base);
1342
1343 if (unlikely(ret != 0)) {
1344 vmw_resource_unreference(&res);
1345 goto out_unlock;
1346 }
1347
1348 tmp = vmw_resource_reference(res);
1349 ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
1350 req->drm_surface_flags &
1351 drm_vmw_surface_flag_shareable,
1352 VMW_RES_SURFACE,
1353 &vmw_user_surface_base_release, NULL);
1354
1355 if (unlikely(ret != 0)) {
1356 vmw_resource_unreference(&tmp);
1357 vmw_resource_unreference(&res);
1358 goto out_unlock;
1359 }
1360
1361 rep->handle = user_srf->prime.base.hash.key;
1362 rep->backup_size = res->backup_size;
1363 if (res->backup) {
1364 rep->buffer_map_handle =
1365 drm_vma_node_offset_addr(&res->backup->base.vma_node);
1366 rep->buffer_size = res->backup->base.num_pages * PAGE_SIZE;
1367 rep->buffer_handle = backup_handle;
1368 } else {
1369 rep->buffer_map_handle = 0;
1370 rep->buffer_size = 0;
1371 rep->buffer_handle = SVGA3D_INVALID_ID;
1372 }
1373
1374 vmw_resource_unreference(&res);
1375
1376out_unlock:
1377 ttm_read_unlock(&dev_priv->reservation_sem);
1378 return ret;
1379}
1380
1381/**
1382 * vmw_gb_surface_reference_ioctl - Ioctl function implementing
1383 * the user surface reference functionality.
1384 *
1385 * @dev: Pointer to a struct drm_device.
1386 * @data: Pointer to data copied from / to user-space.
1387 * @file_priv: Pointer to a drm file private structure.
1388 */
1389int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
1390 struct drm_file *file_priv)
1391{
1392 struct vmw_private *dev_priv = vmw_priv(dev);
1393 union drm_vmw_gb_surface_reference_arg *arg =
1394 (union drm_vmw_gb_surface_reference_arg *)data;
1395 struct drm_vmw_surface_arg *req = &arg->req;
1396 struct drm_vmw_gb_surface_ref_rep *rep = &arg->rep;
1397 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1398 struct vmw_surface *srf;
1399 struct vmw_user_surface *user_srf;
1400 struct ttm_base_object *base;
1401 uint32_t backup_handle;
1402 int ret = -EINVAL;
1403
1404 ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
1405 req->handle_type, &base);
1406 if (unlikely(ret != 0))
1407 return ret;
1408
1409 user_srf = container_of(base, struct vmw_user_surface, prime.base);
1410 srf = &user_srf->srf;
1411 if (!srf->res.backup) {
1412 DRM_ERROR("Shared GB surface is missing a backup buffer.\n");
1413 goto out_bad_resource;
1414 }
1415
1416 mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
1417 ret = vmw_user_dmabuf_reference(tfile, srf->res.backup,
1418 &backup_handle);
1419 mutex_unlock(&dev_priv->cmdbuf_mutex);
1420
1421 if (unlikely(ret != 0)) {
1422 DRM_ERROR("Could not add a reference to a GB surface "
1423 "backup buffer.\n");
1424 (void) ttm_ref_object_base_unref(tfile, base->hash.key,
1425 TTM_REF_USAGE);
1426 goto out_bad_resource;
1427 }
1428
1429 rep->creq.svga3d_flags = srf->flags;
1430 rep->creq.format = srf->format;
1431 rep->creq.mip_levels = srf->mip_levels[0];
1432 rep->creq.drm_surface_flags = 0;
1433 rep->creq.multisample_count = srf->multisample_count;
1434 rep->creq.autogen_filter = srf->autogen_filter;
1435 rep->creq.array_size = srf->array_size;
1436 rep->creq.buffer_handle = backup_handle;
1437 rep->creq.base_size = srf->base_size;
1438 rep->crep.handle = user_srf->prime.base.hash.key;
1439 rep->crep.backup_size = srf->res.backup_size;
1440 rep->crep.buffer_handle = backup_handle;
1441 rep->crep.buffer_map_handle =
1442 drm_vma_node_offset_addr(&srf->res.backup->base.vma_node);
1443 rep->crep.buffer_size = srf->res.backup->base.num_pages * PAGE_SIZE;
1444
1445out_bad_resource:
1446 ttm_base_object_unref(&base);
1447
1448 return ret;
1449}
1450
1451/**
1452 * vmw_surface_gb_priv_define - Define a private GB surface
1453 *
1454 * @dev: Pointer to a struct drm_device
1455 * @user_accounting_size: Used to track user-space memory usage, set
1456 * to 0 for kernel mode only memory
1457 * @svga3d_flags: SVGA3d surface flags for the device
1458 * @format: requested surface format
1459 * @for_scanout: true if inteded to be used for scanout buffer
1460 * @num_mip_levels: number of MIP levels
1461 * @multisample_count:
1462 * @array_size: Surface array size.
1463 * @size: width, heigh, depth of the surface requested
1464 * @user_srf_out: allocated user_srf. Set to NULL on failure.
1465 *
1466 * GB surfaces allocated by this function will not have a user mode handle, and
1467 * thus will only be visible to vmwgfx. For optimization reasons the
1468 * surface may later be given a user mode handle by another function to make
1469 * it available to user mode drivers.
1470 */
1471int vmw_surface_gb_priv_define(struct drm_device *dev,
1472 uint32_t user_accounting_size,
1473 uint32_t svga3d_flags,
1474 SVGA3dSurfaceFormat format,
1475 bool for_scanout,
1476 uint32_t num_mip_levels,
1477 uint32_t multisample_count,
1478 uint32_t array_size,
1479 struct drm_vmw_size size,
1480 struct vmw_surface **srf_out)
1481{
1482 struct vmw_private *dev_priv = vmw_priv(dev);
1483 struct vmw_user_surface *user_srf;
1484 struct ttm_operation_ctx ctx = {
1485 .interruptible = true,
1486 .no_wait_gpu = false
1487 };
1488 struct vmw_surface *srf;
1489 int ret;
1490 u32 num_layers;
1491
1492 *srf_out = NULL;
1493
1494 if (for_scanout) {
1495 uint32_t max_width, max_height;
1496
1497 if (!svga3dsurface_is_screen_target_format(format)) {
1498 DRM_ERROR("Invalid Screen Target surface format.");
1499 return -EINVAL;
1500 }
1501
1502 max_width = min(dev_priv->texture_max_width,
1503 dev_priv->stdu_max_width);
1504 max_height = min(dev_priv->texture_max_height,
1505 dev_priv->stdu_max_height);
1506
1507 if (size.width > max_width || size.height > max_height) {
1508 DRM_ERROR("%ux%u\n, exceeds max surface size %ux%u",
1509 size.width, size.height,
1510 max_width, max_height);
1511 return -EINVAL;
1512 }
1513 } else {
1514 const struct svga3d_surface_desc *desc;
1515
1516 desc = svga3dsurface_get_desc(format);
1517 if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
1518 DRM_ERROR("Invalid surface format.\n");
1519 return -EINVAL;
1520 }
1521 }
1522
1523 /* array_size must be null for non-GL3 host. */
1524 if (array_size > 0 && !dev_priv->has_dx) {
1525 DRM_ERROR("Tried to create DX surface on non-DX host.\n");
1526 return -EINVAL;
1527 }
1528
1529 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1530 if (unlikely(ret != 0))
1531 return ret;
1532
1533 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
1534 user_accounting_size, &ctx);
1535 if (unlikely(ret != 0)) {
1536 if (ret != -ERESTARTSYS)
1537 DRM_ERROR("Out of graphics memory for surface"
1538 " creation.\n");
1539 goto out_unlock;
1540 }
1541
1542 user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
1543 if (unlikely(!user_srf)) {
1544 ret = -ENOMEM;
1545 goto out_no_user_srf;
1546 }
1547
1548 *srf_out = &user_srf->srf;
1549 user_srf->size = user_accounting_size;
1550 user_srf->prime.base.shareable = false;
1551 user_srf->prime.base.tfile = NULL;
1552
1553 srf = &user_srf->srf;
1554 srf->flags = svga3d_flags;
1555 srf->format = format;
1556 srf->scanout = for_scanout;
1557 srf->mip_levels[0] = num_mip_levels;
1558 srf->num_sizes = 1;
1559 srf->sizes = NULL;
1560 srf->offsets = NULL;
1561 srf->base_size = size;
1562 srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
1563 srf->array_size = array_size;
1564 srf->multisample_count = multisample_count;
1565
1566 if (array_size)
1567 num_layers = array_size;
1568 else if (svga3d_flags & SVGA3D_SURFACE_CUBEMAP)
1569 num_layers = SVGA3D_MAX_SURFACE_FACES;
1570 else
1571 num_layers = 1;
1572
1573 srf->res.backup_size =
1574 svga3dsurface_get_serialized_size(srf->format,
1575 srf->base_size,
1576 srf->mip_levels[0],
1577 num_layers);
1578
1579 if (srf->flags & SVGA3D_SURFACE_BIND_STREAM_OUTPUT)
1580 srf->res.backup_size += sizeof(SVGA3dDXSOState);
1581
1582 if (dev_priv->active_display_unit == vmw_du_screen_target &&
1583 for_scanout)
1584 srf->flags |= SVGA3D_SURFACE_SCREENTARGET;
1585
1586 /*
1587 * From this point, the generic resource management functions
1588 * destroy the object on failure.
1589 */
1590 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
1591
1592 ttm_read_unlock(&dev_priv->reservation_sem);
1593 return ret;
1594
1595out_no_user_srf:
1596 ttm_mem_global_free(vmw_mem_glob(dev_priv), user_accounting_size);
1597
1598out_unlock:
1599 ttm_read_unlock(&dev_priv->reservation_sem);
1600 return ret;
1601}