1 /**************************************************************************
3 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
28 #include "vmwgfx_drv.h"
29 #include <drm/vmwgfx_drm.h>
30 #include <drm/ttm/ttm_object.h>
31 #include <drm/ttm/ttm_placement.h>
34 struct vmw_user_context {
35 struct ttm_base_object base;
36 struct vmw_resource res;
39 struct vmw_user_surface {
40 struct ttm_base_object base;
41 struct vmw_surface srf;
45 struct vmw_user_dma_buffer {
46 struct ttm_base_object base;
47 struct vmw_dma_buffer dma;
50 struct vmw_bo_user_rep {
56 struct vmw_resource res;
60 struct vmw_user_stream {
61 struct ttm_base_object base;
62 struct vmw_stream stream;
65 struct vmw_surface_offset {
72 static uint64_t vmw_user_context_size;
73 static uint64_t vmw_user_surface_size;
74 static uint64_t vmw_user_stream_size;
76 static inline struct vmw_dma_buffer *
77 vmw_dma_buffer(struct ttm_buffer_object *bo)
79 return container_of(bo, struct vmw_dma_buffer, base);
82 static inline struct vmw_user_dma_buffer *
83 vmw_user_dma_buffer(struct ttm_buffer_object *bo)
85 struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
86 return container_of(vmw_bo, struct vmw_user_dma_buffer, dma);
89 struct vmw_resource *vmw_resource_reference(struct vmw_resource *res)
97 * vmw_resource_release_id - release a resource id to the id manager.
99 * @res: Pointer to the resource.
101 * Release the resource id to the resource id manager and set it to -1
103 static void vmw_resource_release_id(struct vmw_resource *res)
105 struct vmw_private *dev_priv = res->dev_priv;
107 write_lock(&dev_priv->resource_lock);
109 idr_remove(res->idr, res->id);
111 write_unlock(&dev_priv->resource_lock);
114 static void vmw_resource_release(struct kref *kref)
116 struct vmw_resource *res =
117 container_of(kref, struct vmw_resource, kref);
118 struct vmw_private *dev_priv = res->dev_priv;
120 struct idr *idr = res->idr;
123 if (res->remove_from_lists != NULL)
124 res->remove_from_lists(res);
125 write_unlock(&dev_priv->resource_lock);
127 if (likely(res->hw_destroy != NULL))
128 res->hw_destroy(res);
130 if (res->res_free != NULL)
135 write_lock(&dev_priv->resource_lock);
141 void vmw_resource_unreference(struct vmw_resource **p_res)
143 struct vmw_resource *res = *p_res;
144 struct vmw_private *dev_priv = res->dev_priv;
147 write_lock(&dev_priv->resource_lock);
148 kref_put(&res->kref, vmw_resource_release);
149 write_unlock(&dev_priv->resource_lock);
154 * vmw_resource_alloc_id - release a resource id to the id manager.
156 * @dev_priv: Pointer to the device private structure.
157 * @res: Pointer to the resource.
159 * Allocate the lowest free resource from the resource manager, and set
160 * @res->id to that id. Returns 0 on success and -ENOMEM on failure.
162 static int vmw_resource_alloc_id(struct vmw_private *dev_priv,
163 struct vmw_resource *res)
167 BUG_ON(res->id != -1);
170 if (unlikely(idr_pre_get(res->idr, GFP_KERNEL) == 0))
173 write_lock(&dev_priv->resource_lock);
174 ret = idr_get_new_above(res->idr, res, 1, &res->id);
175 write_unlock(&dev_priv->resource_lock);
177 } while (ret == -EAGAIN);
183 static int vmw_resource_init(struct vmw_private *dev_priv,
184 struct vmw_resource *res,
186 enum ttm_object_type obj_type,
188 void (*res_free) (struct vmw_resource *res),
189 void (*remove_from_lists)
190 (struct vmw_resource *res))
192 kref_init(&res->kref);
193 res->hw_destroy = NULL;
194 res->res_free = res_free;
195 res->remove_from_lists = remove_from_lists;
196 res->res_type = obj_type;
199 res->dev_priv = dev_priv;
200 INIT_LIST_HEAD(&res->query_head);
201 INIT_LIST_HEAD(&res->validate_head);
206 return vmw_resource_alloc_id(dev_priv, res);
210 * vmw_resource_activate
212 * @res: Pointer to the newly created resource
213 * @hw_destroy: Destroy function. NULL if none.
215 * Activate a resource after the hardware has been made aware of it.
216 * Set tye destroy function to @destroy. Typically this frees the
217 * resource and destroys the hardware resources associated with it.
218 * Activate basically means that the function vmw_resource_lookup will
222 static void vmw_resource_activate(struct vmw_resource *res,
223 void (*hw_destroy) (struct vmw_resource *))
225 struct vmw_private *dev_priv = res->dev_priv;
227 write_lock(&dev_priv->resource_lock);
229 res->hw_destroy = hw_destroy;
230 write_unlock(&dev_priv->resource_lock);
233 struct vmw_resource *vmw_resource_lookup(struct vmw_private *dev_priv,
234 struct idr *idr, int id)
236 struct vmw_resource *res;
238 read_lock(&dev_priv->resource_lock);
239 res = idr_find(idr, id);
240 if (res && res->avail)
241 kref_get(&res->kref);
244 read_unlock(&dev_priv->resource_lock);
246 if (unlikely(res == NULL))
253 * Context management:
256 static void vmw_hw_context_destroy(struct vmw_resource *res)
259 struct vmw_private *dev_priv = res->dev_priv;
261 SVGA3dCmdHeader header;
262 SVGA3dCmdDestroyContext body;
266 vmw_execbuf_release_pinned_bo(dev_priv, true, res->id);
268 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
269 if (unlikely(cmd == NULL)) {
270 DRM_ERROR("Failed reserving FIFO space for surface "
275 cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DESTROY);
276 cmd->header.size = cpu_to_le32(sizeof(cmd->body));
277 cmd->body.cid = cpu_to_le32(res->id);
279 vmw_fifo_commit(dev_priv, sizeof(*cmd));
280 vmw_3d_resource_dec(dev_priv, false);
283 static int vmw_context_init(struct vmw_private *dev_priv,
284 struct vmw_resource *res,
285 void (*res_free) (struct vmw_resource *res))
290 SVGA3dCmdHeader header;
291 SVGA3dCmdDefineContext body;
294 ret = vmw_resource_init(dev_priv, res, &dev_priv->context_idr,
295 VMW_RES_CONTEXT, false, res_free, NULL);
297 if (unlikely(ret != 0)) {
298 DRM_ERROR("Failed to allocate a resource id.\n");
302 if (unlikely(res->id >= SVGA3D_MAX_CONTEXT_IDS)) {
303 DRM_ERROR("Out of hw context ids.\n");
304 vmw_resource_unreference(&res);
308 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
309 if (unlikely(cmd == NULL)) {
310 DRM_ERROR("Fifo reserve failed.\n");
311 vmw_resource_unreference(&res);
315 cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DEFINE);
316 cmd->header.size = cpu_to_le32(sizeof(cmd->body));
317 cmd->body.cid = cpu_to_le32(res->id);
319 vmw_fifo_commit(dev_priv, sizeof(*cmd));
320 (void) vmw_3d_resource_inc(dev_priv, false);
321 vmw_resource_activate(res, vmw_hw_context_destroy);
325 if (res_free == NULL)
332 struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv)
334 struct vmw_resource *res = kmalloc(sizeof(*res), GFP_KERNEL);
337 if (unlikely(res == NULL))
340 ret = vmw_context_init(dev_priv, res, NULL);
341 return (ret == 0) ? res : NULL;
345 * User-space context management:
348 static void vmw_user_context_free(struct vmw_resource *res)
350 struct vmw_user_context *ctx =
351 container_of(res, struct vmw_user_context, res);
352 struct vmw_private *dev_priv = res->dev_priv;
355 ttm_mem_global_free(vmw_mem_glob(dev_priv),
356 vmw_user_context_size);
360 * This function is called when user space has no more references on the
361 * base object. It releases the base-object's reference on the resource object.
364 static void vmw_user_context_base_release(struct ttm_base_object **p_base)
366 struct ttm_base_object *base = *p_base;
367 struct vmw_user_context *ctx =
368 container_of(base, struct vmw_user_context, base);
369 struct vmw_resource *res = &ctx->res;
372 vmw_resource_unreference(&res);
375 int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
376 struct drm_file *file_priv)
378 struct vmw_private *dev_priv = vmw_priv(dev);
379 struct vmw_resource *res;
380 struct vmw_user_context *ctx;
381 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
382 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
385 res = vmw_resource_lookup(dev_priv, &dev_priv->context_idr, arg->cid);
386 if (unlikely(res == NULL))
389 if (res->res_free != &vmw_user_context_free) {
394 ctx = container_of(res, struct vmw_user_context, res);
395 if (ctx->base.tfile != tfile && !ctx->base.shareable) {
400 ttm_ref_object_base_unref(tfile, ctx->base.hash.key, TTM_REF_USAGE);
402 vmw_resource_unreference(&res);
406 int vmw_context_define_ioctl(struct drm_device *dev, void *data,
407 struct drm_file *file_priv)
409 struct vmw_private *dev_priv = vmw_priv(dev);
410 struct vmw_user_context *ctx;
411 struct vmw_resource *res;
412 struct vmw_resource *tmp;
413 struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
414 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
415 struct vmw_master *vmaster = vmw_master(file_priv->master);
420 * Approximate idr memory usage with 128 bytes. It will be limited
421 * by maximum number_of contexts anyway.
424 if (unlikely(vmw_user_context_size == 0))
425 vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) + 128;
427 ret = ttm_read_lock(&vmaster->lock, true);
428 if (unlikely(ret != 0))
431 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
432 vmw_user_context_size,
434 if (unlikely(ret != 0)) {
435 if (ret != -ERESTARTSYS)
436 DRM_ERROR("Out of graphics memory for context"
441 ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
442 if (unlikely(ctx == NULL)) {
443 ttm_mem_global_free(vmw_mem_glob(dev_priv),
444 vmw_user_context_size);
450 ctx->base.shareable = false;
451 ctx->base.tfile = NULL;
454 * From here on, the destructor takes over resource freeing.
457 ret = vmw_context_init(dev_priv, res, vmw_user_context_free);
458 if (unlikely(ret != 0))
461 tmp = vmw_resource_reference(&ctx->res);
462 ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
463 &vmw_user_context_base_release, NULL);
465 if (unlikely(ret != 0)) {
466 vmw_resource_unreference(&tmp);
472 vmw_resource_unreference(&res);
474 ttm_read_unlock(&vmaster->lock);
479 int vmw_context_check(struct vmw_private *dev_priv,
480 struct ttm_object_file *tfile,
482 struct vmw_resource **p_res)
484 struct vmw_resource *res;
487 read_lock(&dev_priv->resource_lock);
488 res = idr_find(&dev_priv->context_idr, id);
489 if (res && res->avail) {
490 struct vmw_user_context *ctx =
491 container_of(res, struct vmw_user_context, res);
492 if (ctx->base.tfile != tfile && !ctx->base.shareable)
495 *p_res = vmw_resource_reference(res);
498 read_unlock(&dev_priv->resource_lock);
509 * Size table for the supported SVGA3D surface formats. It consists of
510 * two values. The bpp value and the s_bpp value which is short for
511 * "stride bits per pixel" The values are given in such a way that the
512 * minimum stride for the image is calculated using
514 * min_stride = w*s_bpp
516 * and the total memory requirement for the image is
518 * h*min_stride*bpp/s_bpp
521 static const struct vmw_bpp vmw_sf_bpp[] = {
522 [SVGA3D_FORMAT_INVALID] = {0, 0},
523 [SVGA3D_X8R8G8B8] = {32, 32},
524 [SVGA3D_A8R8G8B8] = {32, 32},
525 [SVGA3D_R5G6B5] = {16, 16},
526 [SVGA3D_X1R5G5B5] = {16, 16},
527 [SVGA3D_A1R5G5B5] = {16, 16},
528 [SVGA3D_A4R4G4B4] = {16, 16},
529 [SVGA3D_Z_D32] = {32, 32},
530 [SVGA3D_Z_D16] = {16, 16},
531 [SVGA3D_Z_D24S8] = {32, 32},
532 [SVGA3D_Z_D15S1] = {16, 16},
533 [SVGA3D_LUMINANCE8] = {8, 8},
534 [SVGA3D_LUMINANCE4_ALPHA4] = {8, 8},
535 [SVGA3D_LUMINANCE16] = {16, 16},
536 [SVGA3D_LUMINANCE8_ALPHA8] = {16, 16},
537 [SVGA3D_DXT1] = {4, 16},
538 [SVGA3D_DXT2] = {8, 32},
539 [SVGA3D_DXT3] = {8, 32},
540 [SVGA3D_DXT4] = {8, 32},
541 [SVGA3D_DXT5] = {8, 32},
542 [SVGA3D_BUMPU8V8] = {16, 16},
543 [SVGA3D_BUMPL6V5U5] = {16, 16},
544 [SVGA3D_BUMPX8L8V8U8] = {32, 32},
545 [SVGA3D_ARGB_S10E5] = {16, 16},
546 [SVGA3D_ARGB_S23E8] = {32, 32},
547 [SVGA3D_A2R10G10B10] = {32, 32},
548 [SVGA3D_V8U8] = {16, 16},
549 [SVGA3D_Q8W8V8U8] = {32, 32},
550 [SVGA3D_CxV8U8] = {16, 16},
551 [SVGA3D_X8L8V8U8] = {32, 32},
552 [SVGA3D_A2W10V10U10] = {32, 32},
553 [SVGA3D_ALPHA8] = {8, 8},
554 [SVGA3D_R_S10E5] = {16, 16},
555 [SVGA3D_R_S23E8] = {32, 32},
556 [SVGA3D_RG_S10E5] = {16, 16},
557 [SVGA3D_RG_S23E8] = {32, 32},
558 [SVGA3D_BUFFER] = {8, 8},
559 [SVGA3D_Z_D24X8] = {32, 32},
560 [SVGA3D_V16U16] = {32, 32},
561 [SVGA3D_G16R16] = {32, 32},
562 [SVGA3D_A16B16G16R16] = {64, 64},
563 [SVGA3D_UYVY] = {12, 12},
564 [SVGA3D_YUY2] = {12, 12},
565 [SVGA3D_NV12] = {12, 8},
566 [SVGA3D_AYUV] = {32, 32},
567 [SVGA3D_BC4_UNORM] = {4, 16},
568 [SVGA3D_BC5_UNORM] = {8, 32},
569 [SVGA3D_Z_DF16] = {16, 16},
570 [SVGA3D_Z_DF24] = {24, 24},
571 [SVGA3D_Z_D24S8_INT] = {32, 32}
576 * Surface management.
579 struct vmw_surface_dma {
580 SVGA3dCmdHeader header;
581 SVGA3dCmdSurfaceDMA body;
583 SVGA3dCmdSurfaceDMASuffix suffix;
586 struct vmw_surface_define {
587 SVGA3dCmdHeader header;
588 SVGA3dCmdDefineSurface body;
591 struct vmw_surface_destroy {
592 SVGA3dCmdHeader header;
593 SVGA3dCmdDestroySurface body;
598 * vmw_surface_dma_size - Compute fifo size for a dma command.
600 * @srf: Pointer to a struct vmw_surface
602 * Computes the required size for a surface dma command for backup or
603 * restoration of the surface represented by @srf.
605 static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
607 return srf->num_sizes * sizeof(struct vmw_surface_dma);
612 * vmw_surface_define_size - Compute fifo size for a surface define command.
614 * @srf: Pointer to a struct vmw_surface
616 * Computes the required size for a surface define command for the definition
617 * of the surface represented by @srf.
619 static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
621 return sizeof(struct vmw_surface_define) + srf->num_sizes *
627 * vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
629 * Computes the required size for a surface destroy command for the destruction
632 static inline uint32_t vmw_surface_destroy_size(void)
634 return sizeof(struct vmw_surface_destroy);
638 * vmw_surface_destroy_encode - Encode a surface_destroy command.
640 * @id: The surface id
641 * @cmd_space: Pointer to memory area in which the commands should be encoded.
643 static void vmw_surface_destroy_encode(uint32_t id,
646 struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
649 cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
650 cmd->header.size = sizeof(cmd->body);
655 * vmw_surface_define_encode - Encode a surface_define command.
657 * @srf: Pointer to a struct vmw_surface object.
658 * @cmd_space: Pointer to memory area in which the commands should be encoded.
660 static void vmw_surface_define_encode(const struct vmw_surface *srf,
663 struct vmw_surface_define *cmd = (struct vmw_surface_define *)
665 struct drm_vmw_size *src_size;
666 SVGA3dSize *cmd_size;
670 cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
672 cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
673 cmd->header.size = cmd_len;
674 cmd->body.sid = srf->res.id;
675 cmd->body.surfaceFlags = srf->flags;
676 cmd->body.format = cpu_to_le32(srf->format);
677 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
678 cmd->body.face[i].numMipLevels = srf->mip_levels[i];
681 cmd_size = (SVGA3dSize *) cmd;
682 src_size = srf->sizes;
684 for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
685 cmd_size->width = src_size->width;
686 cmd_size->height = src_size->height;
687 cmd_size->depth = src_size->depth;
693 * vmw_surface_dma_encode - Encode a surface_dma command.
695 * @srf: Pointer to a struct vmw_surface object.
696 * @cmd_space: Pointer to memory area in which the commands should be encoded.
697 * @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
698 * should be placed or read from.
699 * @to_surface: Boolean whether to DMA to the surface or from the surface.
701 static void vmw_surface_dma_encode(struct vmw_surface *srf,
703 const SVGAGuestPtr *ptr,
707 uint32_t bpp = vmw_sf_bpp[srf->format].bpp;
708 uint32_t stride_bpp = vmw_sf_bpp[srf->format].s_bpp;
709 struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
711 for (i = 0; i < srf->num_sizes; ++i) {
712 SVGA3dCmdHeader *header = &cmd->header;
713 SVGA3dCmdSurfaceDMA *body = &cmd->body;
714 SVGA3dCopyBox *cb = &cmd->cb;
715 SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
716 const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
717 const struct drm_vmw_size *cur_size = &srf->sizes[i];
719 header->id = SVGA_3D_CMD_SURFACE_DMA;
720 header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
722 body->guest.ptr = *ptr;
723 body->guest.ptr.offset += cur_offset->bo_offset;
724 body->guest.pitch = (cur_size->width * stride_bpp + 7) >> 3;
725 body->host.sid = srf->res.id;
726 body->host.face = cur_offset->face;
727 body->host.mipmap = cur_offset->mip;
728 body->transfer = ((to_surface) ? SVGA3D_WRITE_HOST_VRAM :
729 SVGA3D_READ_HOST_VRAM);
736 cb->w = cur_size->width;
737 cb->h = cur_size->height;
738 cb->d = cur_size->depth;
740 suffix->suffixSize = sizeof(*suffix);
741 suffix->maximumOffset = body->guest.pitch*cur_size->height*
742 cur_size->depth*bpp / stride_bpp;
743 suffix->flags.discard = 0;
744 suffix->flags.unsynchronized = 0;
745 suffix->flags.reserved = 0;
751 static void vmw_hw_surface_destroy(struct vmw_resource *res)
754 struct vmw_private *dev_priv = res->dev_priv;
755 struct vmw_surface *srf;
760 cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
761 if (unlikely(cmd == NULL)) {
762 DRM_ERROR("Failed reserving FIFO space for surface "
767 vmw_surface_destroy_encode(res->id, cmd);
768 vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
771 * used_memory_size_atomic, or separate lock
772 * to avoid taking dev_priv::cmdbuf_mutex in
776 mutex_lock(&dev_priv->cmdbuf_mutex);
777 srf = container_of(res, struct vmw_surface, res);
778 dev_priv->used_memory_size -= srf->backup_size;
779 mutex_unlock(&dev_priv->cmdbuf_mutex);
782 vmw_3d_resource_dec(dev_priv, false);
785 void vmw_surface_res_free(struct vmw_resource *res)
787 struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
790 ttm_bo_unref(&srf->backup);
793 kfree(srf->snooper.image);
799 * vmw_surface_do_validate - make a surface available to the device.
801 * @dev_priv: Pointer to a device private struct.
802 * @srf: Pointer to a struct vmw_surface.
804 * If the surface doesn't have a hw id, allocate one, and optionally
805 * DMA the backed up surface contents to the device.
807 * Returns -EBUSY if there wasn't sufficient device resources to
808 * complete the validation. Retry after freeing up resources.
810 * May return other errors if the kernel is out of guest resources.
812 int vmw_surface_do_validate(struct vmw_private *dev_priv,
813 struct vmw_surface *srf)
815 struct vmw_resource *res = &srf->res;
816 struct list_head val_list;
817 struct ttm_validate_buffer val_buf;
818 uint32_t submit_size;
822 if (likely(res->id != -1))
825 if (unlikely(dev_priv->used_memory_size + srf->backup_size >=
826 dev_priv->memory_size))
830 * Reserve- and validate the backup DMA bo.
834 INIT_LIST_HEAD(&val_list);
835 val_buf.bo = ttm_bo_reference(srf->backup);
836 val_buf.new_sync_obj_arg = (void *)((unsigned long)
837 DRM_VMW_FENCE_FLAG_EXEC);
838 list_add_tail(&val_buf.head, &val_list);
839 ret = ttm_eu_reserve_buffers(&val_list);
840 if (unlikely(ret != 0))
843 ret = ttm_bo_validate(srf->backup, &vmw_srf_placement,
845 if (unlikely(ret != 0))
846 goto out_no_validate;
850 * Alloc id for the resource.
853 ret = vmw_resource_alloc_id(dev_priv, res);
854 if (unlikely(ret != 0)) {
855 DRM_ERROR("Failed to allocate a surface id.\n");
858 if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) {
865 * Encode surface define- and dma commands.
868 submit_size = vmw_surface_define_size(srf);
870 submit_size += vmw_surface_dma_size(srf);
872 cmd = vmw_fifo_reserve(dev_priv, submit_size);
873 if (unlikely(cmd == NULL)) {
874 DRM_ERROR("Failed reserving FIFO space for surface "
880 vmw_surface_define_encode(srf, cmd);
884 cmd += vmw_surface_define_size(srf);
885 vmw_bo_get_guest_ptr(srf->backup, &ptr);
886 vmw_surface_dma_encode(srf, cmd, &ptr, true);
889 vmw_fifo_commit(dev_priv, submit_size);
892 * Create a fence object and fence the backup buffer.
896 struct vmw_fence_obj *fence;
898 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
900 ttm_eu_fence_buffer_objects(&val_list, fence);
901 if (likely(fence != NULL))
902 vmw_fence_obj_unreference(&fence);
903 ttm_bo_unref(&val_buf.bo);
904 ttm_bo_unref(&srf->backup);
908 * Surface memory usage accounting.
911 dev_priv->used_memory_size += srf->backup_size;
916 vmw_resource_release_id(res);
920 ttm_eu_backoff_reservation(&val_list);
923 ttm_bo_unref(&val_buf.bo);
928 * vmw_surface_evict - Evict a hw surface.
930 * @dev_priv: Pointer to a device private struct.
931 * @srf: Pointer to a struct vmw_surface
933 * DMA the contents of a hw surface to a backup guest buffer object,
934 * and destroy the hw surface, releasing its id.
936 int vmw_surface_evict(struct vmw_private *dev_priv,
937 struct vmw_surface *srf)
939 struct vmw_resource *res = &srf->res;
940 struct list_head val_list;
941 struct ttm_validate_buffer val_buf;
942 uint32_t submit_size;
945 struct vmw_fence_obj *fence;
948 BUG_ON(res->id == -1);
951 * Create a surface backup buffer object.
955 ret = ttm_bo_create(&dev_priv->bdev, srf->backup_size,
957 &vmw_srf_placement, 0, 0, true,
959 if (unlikely(ret != 0))
964 * Reserve- and validate the backup DMA bo.
967 INIT_LIST_HEAD(&val_list);
968 val_buf.bo = ttm_bo_reference(srf->backup);
969 val_buf.new_sync_obj_arg = (void *)(unsigned long)
970 DRM_VMW_FENCE_FLAG_EXEC;
971 list_add_tail(&val_buf.head, &val_list);
972 ret = ttm_eu_reserve_buffers(&val_list);
973 if (unlikely(ret != 0))
976 ret = ttm_bo_validate(srf->backup, &vmw_srf_placement,
978 if (unlikely(ret != 0))
979 goto out_no_validate;
983 * Encode the dma- and surface destroy commands.
986 submit_size = vmw_surface_dma_size(srf) + vmw_surface_destroy_size();
987 cmd = vmw_fifo_reserve(dev_priv, submit_size);
988 if (unlikely(cmd == NULL)) {
989 DRM_ERROR("Failed reserving FIFO space for surface "
995 vmw_bo_get_guest_ptr(srf->backup, &ptr);
996 vmw_surface_dma_encode(srf, cmd, &ptr, false);
997 cmd += vmw_surface_dma_size(srf);
998 vmw_surface_destroy_encode(res->id, cmd);
999 vmw_fifo_commit(dev_priv, submit_size);
1002 * Surface memory usage accounting.
1005 dev_priv->used_memory_size -= srf->backup_size;
1008 * Create a fence object and fence the DMA buffer.
1011 (void) vmw_execbuf_fence_commands(NULL, dev_priv,
1013 ttm_eu_fence_buffer_objects(&val_list, fence);
1014 if (likely(fence != NULL))
1015 vmw_fence_obj_unreference(&fence);
1016 ttm_bo_unref(&val_buf.bo);
1019 * Release the surface ID.
1022 vmw_resource_release_id(res);
1029 ttm_eu_backoff_reservation(&val_list);
1031 ttm_bo_unref(&val_buf.bo);
1032 ttm_bo_unref(&srf->backup);
1038 * vmw_surface_validate - make a surface available to the device, evicting
1039 * other surfaces if needed.
1041 * @dev_priv: Pointer to a device private struct.
1042 * @srf: Pointer to a struct vmw_surface.
1044 * Try to validate a surface and if it fails due to limited device resources,
1045 * repeatedly try to evict other surfaces until the request can be
1048 * May return errors if out of resources.
1050 int vmw_surface_validate(struct vmw_private *dev_priv,
1051 struct vmw_surface *srf)
1054 struct vmw_surface *evict_srf;
1057 write_lock(&dev_priv->resource_lock);
1058 list_del_init(&srf->lru_head);
1059 write_unlock(&dev_priv->resource_lock);
1061 ret = vmw_surface_do_validate(dev_priv, srf);
1062 if (likely(ret != -EBUSY))
1065 write_lock(&dev_priv->resource_lock);
1066 if (list_empty(&dev_priv->surface_lru)) {
1067 DRM_ERROR("Out of device memory for surfaces.\n");
1069 write_unlock(&dev_priv->resource_lock);
1073 evict_srf = vmw_surface_reference
1074 (list_first_entry(&dev_priv->surface_lru,
1077 list_del_init(&evict_srf->lru_head);
1079 write_unlock(&dev_priv->resource_lock);
1080 (void) vmw_surface_evict(dev_priv, evict_srf);
1082 vmw_surface_unreference(&evict_srf);
1086 if (unlikely(ret != 0 && srf->res.id != -1)) {
1087 write_lock(&dev_priv->resource_lock);
1088 list_add_tail(&srf->lru_head, &dev_priv->surface_lru);
1089 write_unlock(&dev_priv->resource_lock);
1097 * vmw_surface_remove_from_lists - Remove surface resources from lookup lists
1099 * @res: Pointer to a struct vmw_resource embedded in a struct vmw_surface
1101 * As part of the resource destruction, remove the surface from any
1104 static void vmw_surface_remove_from_lists(struct vmw_resource *res)
1106 struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
1108 list_del_init(&srf->lru_head);
1111 int vmw_surface_init(struct vmw_private *dev_priv,
1112 struct vmw_surface *srf,
1113 void (*res_free) (struct vmw_resource *res))
1116 struct vmw_resource *res = &srf->res;
1118 BUG_ON(res_free == NULL);
1119 INIT_LIST_HEAD(&srf->lru_head);
1120 ret = vmw_resource_init(dev_priv, res, &dev_priv->surface_idr,
1121 VMW_RES_SURFACE, true, res_free,
1122 vmw_surface_remove_from_lists);
1124 if (unlikely(ret != 0))
1128 * The surface won't be visible to hardware until a
1132 (void) vmw_3d_resource_inc(dev_priv, false);
1133 vmw_resource_activate(res, vmw_hw_surface_destroy);
1137 static void vmw_user_surface_free(struct vmw_resource *res)
1139 struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
1140 struct vmw_user_surface *user_srf =
1141 container_of(srf, struct vmw_user_surface, srf);
1142 struct vmw_private *dev_priv = srf->res.dev_priv;
1143 uint32_t size = user_srf->size;
1146 ttm_bo_unref(&srf->backup);
1147 kfree(srf->offsets);
1149 kfree(srf->snooper.image);
1151 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
1155 * vmw_resource_unreserve - unreserve resources previously reserved for
1156 * command submission.
1158 * @list_head: list of resources to unreserve.
1160 * Currently only surfaces are considered, and unreserving a surface
1161 * means putting it back on the device's surface lru list,
1162 * so that it can be evicted if necessary.
1163 * This function traverses the resource list and
1164 * checks whether resources are surfaces, and in that case puts them back
1165 * on the device's surface LRU list.
1167 void vmw_resource_unreserve(struct list_head *list)
1169 struct vmw_resource *res;
1170 struct vmw_surface *srf;
1171 rwlock_t *lock = NULL;
1173 list_for_each_entry(res, list, validate_head) {
1175 if (res->res_free != &vmw_surface_res_free &&
1176 res->res_free != &vmw_user_surface_free)
1179 if (unlikely(lock == NULL)) {
1180 lock = &res->dev_priv->resource_lock;
1184 srf = container_of(res, struct vmw_surface, res);
1185 list_del_init(&srf->lru_head);
1186 list_add_tail(&srf->lru_head, &res->dev_priv->surface_lru);
1194 * Helper function that looks either a surface or dmabuf.
1196 * The pointer this pointed at by out_surf and out_buf needs to be null.
1198 int vmw_user_lookup_handle(struct vmw_private *dev_priv,
1199 struct ttm_object_file *tfile,
1201 struct vmw_surface **out_surf,
1202 struct vmw_dma_buffer **out_buf)
1206 BUG_ON(*out_surf || *out_buf);
1208 ret = vmw_user_surface_lookup_handle(dev_priv, tfile, handle, out_surf);
1212 ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf);
1217 int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv,
1218 struct ttm_object_file *tfile,
1219 uint32_t handle, struct vmw_surface **out)
1221 struct vmw_resource *res;
1222 struct vmw_surface *srf;
1223 struct vmw_user_surface *user_srf;
1224 struct ttm_base_object *base;
1227 base = ttm_base_object_lookup(tfile, handle);
1228 if (unlikely(base == NULL))
1231 if (unlikely(base->object_type != VMW_RES_SURFACE))
1232 goto out_bad_resource;
1234 user_srf = container_of(base, struct vmw_user_surface, base);
1235 srf = &user_srf->srf;
1238 read_lock(&dev_priv->resource_lock);
1240 if (!res->avail || res->res_free != &vmw_user_surface_free) {
1241 read_unlock(&dev_priv->resource_lock);
1242 goto out_bad_resource;
1245 kref_get(&res->kref);
1246 read_unlock(&dev_priv->resource_lock);
1252 ttm_base_object_unref(&base);
1257 static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
1259 struct ttm_base_object *base = *p_base;
1260 struct vmw_user_surface *user_srf =
1261 container_of(base, struct vmw_user_surface, base);
1262 struct vmw_resource *res = &user_srf->srf.res;
1265 vmw_resource_unreference(&res);
1268 int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
1269 struct drm_file *file_priv)
1271 struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
1272 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1274 return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
1277 int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
1278 struct drm_file *file_priv)
1280 struct vmw_private *dev_priv = vmw_priv(dev);
1281 struct vmw_user_surface *user_srf;
1282 struct vmw_surface *srf;
1283 struct vmw_resource *res;
1284 struct vmw_resource *tmp;
1285 union drm_vmw_surface_create_arg *arg =
1286 (union drm_vmw_surface_create_arg *)data;
1287 struct drm_vmw_surface_create_req *req = &arg->req;
1288 struct drm_vmw_surface_arg *rep = &arg->rep;
1289 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1290 struct drm_vmw_size __user *user_sizes;
1293 uint32_t cur_bo_offset;
1294 struct drm_vmw_size *cur_size;
1295 struct vmw_surface_offset *cur_offset;
1296 uint32_t stride_bpp;
1300 struct vmw_master *vmaster = vmw_master(file_priv->master);
1302 if (unlikely(vmw_user_surface_size == 0))
1303 vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
1307 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
1308 num_sizes += req->mip_levels[i];
1310 if (num_sizes > DRM_VMW_MAX_SURFACE_FACES *
1311 DRM_VMW_MAX_MIP_LEVELS)
1314 size = vmw_user_surface_size + 128 +
1315 ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
1316 ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
1319 ret = ttm_read_lock(&vmaster->lock, true);
1320 if (unlikely(ret != 0))
1323 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
1325 if (unlikely(ret != 0)) {
1326 if (ret != -ERESTARTSYS)
1327 DRM_ERROR("Out of graphics memory for surface"
1332 user_srf = kmalloc(sizeof(*user_srf), GFP_KERNEL);
1333 if (unlikely(user_srf == NULL)) {
1335 goto out_no_user_srf;
1338 srf = &user_srf->srf;
1341 srf->flags = req->flags;
1342 srf->format = req->format;
1343 srf->scanout = req->scanout;
1346 memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
1347 srf->num_sizes = num_sizes;
1348 user_srf->size = size;
1350 srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
1351 if (unlikely(srf->sizes == NULL)) {
1355 srf->offsets = kmalloc(srf->num_sizes * sizeof(*srf->offsets),
1357 if (unlikely(srf->sizes == NULL)) {
1359 goto out_no_offsets;
1362 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
1365 ret = copy_from_user(srf->sizes, user_sizes,
1366 srf->num_sizes * sizeof(*srf->sizes));
1367 if (unlikely(ret != 0)) {
1373 cur_offset = srf->offsets;
1374 cur_size = srf->sizes;
1376 bpp = vmw_sf_bpp[srf->format].bpp;
1377 stride_bpp = vmw_sf_bpp[srf->format].s_bpp;
1379 for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
1380 for (j = 0; j < srf->mip_levels[i]; ++j) {
1382 (cur_size->width * stride_bpp + 7) >> 3;
1384 cur_offset->face = i;
1385 cur_offset->mip = j;
1386 cur_offset->bo_offset = cur_bo_offset;
1387 cur_bo_offset += stride * cur_size->height *
1388 cur_size->depth * bpp / stride_bpp;
1393 srf->backup_size = cur_bo_offset;
1396 srf->num_sizes == 1 &&
1397 srf->sizes[0].width == 64 &&
1398 srf->sizes[0].height == 64 &&
1399 srf->format == SVGA3D_A8R8G8B8) {
1401 /* allocate image area and clear it */
1402 srf->snooper.image = kzalloc(64 * 64 * 4, GFP_KERNEL);
1403 if (!srf->snooper.image) {
1404 DRM_ERROR("Failed to allocate cursor_image\n");
1409 srf->snooper.image = NULL;
1411 srf->snooper.crtc = NULL;
1413 user_srf->base.shareable = false;
1414 user_srf->base.tfile = NULL;
1417 * From this point, the generic resource management functions
1418 * destroy the object on failure.
1421 ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
1422 if (unlikely(ret != 0))
1425 tmp = vmw_resource_reference(&srf->res);
1426 ret = ttm_base_object_init(tfile, &user_srf->base,
1427 req->shareable, VMW_RES_SURFACE,
1428 &vmw_user_surface_base_release, NULL);
1430 if (unlikely(ret != 0)) {
1431 vmw_resource_unreference(&tmp);
1432 vmw_resource_unreference(&res);
1436 rep->sid = user_srf->base.hash.key;
1437 if (rep->sid == SVGA3D_INVALID_ID)
1438 DRM_ERROR("Created bad Surface ID.\n");
1440 vmw_resource_unreference(&res);
1442 ttm_read_unlock(&vmaster->lock);
1445 kfree(srf->offsets);
1451 ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
1453 ttm_read_unlock(&vmaster->lock);
1457 int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
1458 struct drm_file *file_priv)
1460 union drm_vmw_surface_reference_arg *arg =
1461 (union drm_vmw_surface_reference_arg *)data;
1462 struct drm_vmw_surface_arg *req = &arg->req;
1463 struct drm_vmw_surface_create_req *rep = &arg->rep;
1464 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1465 struct vmw_surface *srf;
1466 struct vmw_user_surface *user_srf;
1467 struct drm_vmw_size __user *user_sizes;
1468 struct ttm_base_object *base;
1471 base = ttm_base_object_lookup(tfile, req->sid);
1472 if (unlikely(base == NULL)) {
1473 DRM_ERROR("Could not find surface to reference.\n");
1477 if (unlikely(base->object_type != VMW_RES_SURFACE))
1478 goto out_bad_resource;
1480 user_srf = container_of(base, struct vmw_user_surface, base);
1481 srf = &user_srf->srf;
1483 ret = ttm_ref_object_add(tfile, &user_srf->base, TTM_REF_USAGE, NULL);
1484 if (unlikely(ret != 0)) {
1485 DRM_ERROR("Could not add a reference to a surface.\n");
1486 goto out_no_reference;
1489 rep->flags = srf->flags;
1490 rep->format = srf->format;
1491 memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
1492 user_sizes = (struct drm_vmw_size __user *)(unsigned long)
1496 ret = copy_to_user(user_sizes, srf->sizes,
1497 srf->num_sizes * sizeof(*srf->sizes));
1498 if (unlikely(ret != 0)) {
1499 DRM_ERROR("copy_to_user failed %p %u\n",
1500 user_sizes, srf->num_sizes);
1505 ttm_base_object_unref(&base);
1510 int vmw_surface_check(struct vmw_private *dev_priv,
1511 struct ttm_object_file *tfile,
1512 uint32_t handle, int *id)
1514 struct ttm_base_object *base;
1515 struct vmw_user_surface *user_srf;
1519 base = ttm_base_object_lookup(tfile, handle);
1520 if (unlikely(base == NULL))
1523 if (unlikely(base->object_type != VMW_RES_SURFACE))
1524 goto out_bad_surface;
1526 user_srf = container_of(base, struct vmw_user_surface, base);
1527 *id = user_srf->srf.res.id;
1532 * FIXME: May deadlock here when called from the
1533 * command parsing code.
1536 ttm_base_object_unref(&base);
1541 * Buffer management.
1543 void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo)
1545 struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
1550 int vmw_dmabuf_init(struct vmw_private *dev_priv,
1551 struct vmw_dma_buffer *vmw_bo,
1552 size_t size, struct ttm_placement *placement,
1554 void (*bo_free) (struct ttm_buffer_object *bo))
1556 struct ttm_bo_device *bdev = &dev_priv->bdev;
1562 acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct vmw_dma_buffer));
1563 memset(vmw_bo, 0, sizeof(*vmw_bo));
1565 INIT_LIST_HEAD(&vmw_bo->validate_list);
1567 ret = ttm_bo_init(bdev, &vmw_bo->base, size,
1568 ttm_bo_type_device, placement,
1569 0, 0, interruptible,
1570 NULL, acc_size, NULL, bo_free);
1574 static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo)
1576 struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo);
1581 static void vmw_user_dmabuf_release(struct ttm_base_object **p_base)
1583 struct vmw_user_dma_buffer *vmw_user_bo;
1584 struct ttm_base_object *base = *p_base;
1585 struct ttm_buffer_object *bo;
1589 if (unlikely(base == NULL))
1592 vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base);
1593 bo = &vmw_user_bo->dma.base;
1597 int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
1598 struct drm_file *file_priv)
1600 struct vmw_private *dev_priv = vmw_priv(dev);
1601 union drm_vmw_alloc_dmabuf_arg *arg =
1602 (union drm_vmw_alloc_dmabuf_arg *)data;
1603 struct drm_vmw_alloc_dmabuf_req *req = &arg->req;
1604 struct drm_vmw_dmabuf_rep *rep = &arg->rep;
1605 struct vmw_user_dma_buffer *vmw_user_bo;
1606 struct ttm_buffer_object *tmp;
1607 struct vmw_master *vmaster = vmw_master(file_priv->master);
1610 vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL);
1611 if (unlikely(vmw_user_bo == NULL))
1614 ret = ttm_read_lock(&vmaster->lock, true);
1615 if (unlikely(ret != 0)) {
1620 ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, req->size,
1621 &vmw_vram_sys_placement, true,
1622 &vmw_user_dmabuf_destroy);
1623 if (unlikely(ret != 0))
1626 tmp = ttm_bo_reference(&vmw_user_bo->dma.base);
1627 ret = ttm_base_object_init(vmw_fpriv(file_priv)->tfile,
1631 &vmw_user_dmabuf_release, NULL);
1632 if (unlikely(ret != 0))
1633 goto out_no_base_object;
1635 rep->handle = vmw_user_bo->base.hash.key;
1636 rep->map_handle = vmw_user_bo->dma.base.addr_space_offset;
1637 rep->cur_gmr_id = vmw_user_bo->base.hash.key;
1638 rep->cur_gmr_offset = 0;
1644 ttm_read_unlock(&vmaster->lock);
1649 int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
1650 struct drm_file *file_priv)
1652 struct drm_vmw_unref_dmabuf_arg *arg =
1653 (struct drm_vmw_unref_dmabuf_arg *)data;
1655 return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
1660 uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
1661 uint32_t cur_validate_node)
1663 struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
1665 if (likely(vmw_bo->on_validate_list))
1666 return vmw_bo->cur_validate_node;
1668 vmw_bo->cur_validate_node = cur_validate_node;
1669 vmw_bo->on_validate_list = true;
1671 return cur_validate_node;
1674 void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo)
1676 struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
1678 vmw_bo->on_validate_list = false;
1681 int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
1682 uint32_t handle, struct vmw_dma_buffer **out)
1684 struct vmw_user_dma_buffer *vmw_user_bo;
1685 struct ttm_base_object *base;
1687 base = ttm_base_object_lookup(tfile, handle);
1688 if (unlikely(base == NULL)) {
1689 printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n",
1690 (unsigned long)handle);
1694 if (unlikely(base->object_type != ttm_buffer_type)) {
1695 ttm_base_object_unref(&base);
1696 printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n",
1697 (unsigned long)handle);
1701 vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base);
1702 (void)ttm_bo_reference(&vmw_user_bo->dma.base);
1703 ttm_base_object_unref(&base);
1704 *out = &vmw_user_bo->dma;
1713 static void vmw_stream_destroy(struct vmw_resource *res)
1715 struct vmw_private *dev_priv = res->dev_priv;
1716 struct vmw_stream *stream;
1719 DRM_INFO("%s: unref\n", __func__);
1720 stream = container_of(res, struct vmw_stream, res);
1722 ret = vmw_overlay_unref(dev_priv, stream->stream_id);
1726 static int vmw_stream_init(struct vmw_private *dev_priv,
1727 struct vmw_stream *stream,
1728 void (*res_free) (struct vmw_resource *res))
1730 struct vmw_resource *res = &stream->res;
1733 ret = vmw_resource_init(dev_priv, res, &dev_priv->stream_idr,
1734 VMW_RES_STREAM, false, res_free, NULL);
1736 if (unlikely(ret != 0)) {
1737 if (res_free == NULL)
1740 res_free(&stream->res);
1744 ret = vmw_overlay_claim(dev_priv, &stream->stream_id);
1746 vmw_resource_unreference(&res);
1750 DRM_INFO("%s: claimed\n", __func__);
1752 vmw_resource_activate(&stream->res, vmw_stream_destroy);
1757 * User-space context management:
1760 static void vmw_user_stream_free(struct vmw_resource *res)
1762 struct vmw_user_stream *stream =
1763 container_of(res, struct vmw_user_stream, stream.res);
1764 struct vmw_private *dev_priv = res->dev_priv;
1767 ttm_mem_global_free(vmw_mem_glob(dev_priv),
1768 vmw_user_stream_size);
1772 * This function is called when user space has no more references on the
1773 * base object. It releases the base-object's reference on the resource object.
1776 static void vmw_user_stream_base_release(struct ttm_base_object **p_base)
1778 struct ttm_base_object *base = *p_base;
1779 struct vmw_user_stream *stream =
1780 container_of(base, struct vmw_user_stream, base);
1781 struct vmw_resource *res = &stream->stream.res;
1784 vmw_resource_unreference(&res);
1787 int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
1788 struct drm_file *file_priv)
1790 struct vmw_private *dev_priv = vmw_priv(dev);
1791 struct vmw_resource *res;
1792 struct vmw_user_stream *stream;
1793 struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
1794 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1797 res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, arg->stream_id);
1798 if (unlikely(res == NULL))
1801 if (res->res_free != &vmw_user_stream_free) {
1806 stream = container_of(res, struct vmw_user_stream, stream.res);
1807 if (stream->base.tfile != tfile) {
1812 ttm_ref_object_base_unref(tfile, stream->base.hash.key, TTM_REF_USAGE);
1814 vmw_resource_unreference(&res);
1818 int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
1819 struct drm_file *file_priv)
1821 struct vmw_private *dev_priv = vmw_priv(dev);
1822 struct vmw_user_stream *stream;
1823 struct vmw_resource *res;
1824 struct vmw_resource *tmp;
1825 struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
1826 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1827 struct vmw_master *vmaster = vmw_master(file_priv->master);
1831 * Approximate idr memory usage with 128 bytes. It will be limited
1832 * by maximum number_of streams anyway?
1835 if (unlikely(vmw_user_stream_size == 0))
1836 vmw_user_stream_size = ttm_round_pot(sizeof(*stream)) + 128;
1838 ret = ttm_read_lock(&vmaster->lock, true);
1839 if (unlikely(ret != 0))
1842 ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
1843 vmw_user_stream_size,
1845 if (unlikely(ret != 0)) {
1846 if (ret != -ERESTARTSYS)
1847 DRM_ERROR("Out of graphics memory for stream"
1853 stream = kmalloc(sizeof(*stream), GFP_KERNEL);
1854 if (unlikely(stream == NULL)) {
1855 ttm_mem_global_free(vmw_mem_glob(dev_priv),
1856 vmw_user_stream_size);
1861 res = &stream->stream.res;
1862 stream->base.shareable = false;
1863 stream->base.tfile = NULL;
1866 * From here on, the destructor takes over resource freeing.
1869 ret = vmw_stream_init(dev_priv, &stream->stream, vmw_user_stream_free);
1870 if (unlikely(ret != 0))
1873 tmp = vmw_resource_reference(res);
1874 ret = ttm_base_object_init(tfile, &stream->base, false, VMW_RES_STREAM,
1875 &vmw_user_stream_base_release, NULL);
1877 if (unlikely(ret != 0)) {
1878 vmw_resource_unreference(&tmp);
1882 arg->stream_id = res->id;
1884 vmw_resource_unreference(&res);
1886 ttm_read_unlock(&vmaster->lock);
1890 int vmw_user_stream_lookup(struct vmw_private *dev_priv,
1891 struct ttm_object_file *tfile,
1892 uint32_t *inout_id, struct vmw_resource **out)
1894 struct vmw_user_stream *stream;
1895 struct vmw_resource *res;
1898 res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, *inout_id);
1899 if (unlikely(res == NULL))
1902 if (res->res_free != &vmw_user_stream_free) {
1907 stream = container_of(res, struct vmw_user_stream, stream.res);
1908 if (stream->base.tfile != tfile) {
1913 *inout_id = stream->stream.stream_id;
1917 vmw_resource_unreference(&res);
1922 int vmw_dumb_create(struct drm_file *file_priv,
1923 struct drm_device *dev,
1924 struct drm_mode_create_dumb *args)
1926 struct vmw_private *dev_priv = vmw_priv(dev);
1927 struct vmw_master *vmaster = vmw_master(file_priv->master);
1928 struct vmw_user_dma_buffer *vmw_user_bo;
1929 struct ttm_buffer_object *tmp;
1932 args->pitch = args->width * ((args->bpp + 7) / 8);
1933 args->size = args->pitch * args->height;
1935 vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL);
1936 if (vmw_user_bo == NULL)
1939 ret = ttm_read_lock(&vmaster->lock, true);
1945 ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, args->size,
1946 &vmw_vram_sys_placement, true,
1947 &vmw_user_dmabuf_destroy);
1951 tmp = ttm_bo_reference(&vmw_user_bo->dma.base);
1952 ret = ttm_base_object_init(vmw_fpriv(file_priv)->tfile,
1956 &vmw_user_dmabuf_release, NULL);
1957 if (unlikely(ret != 0))
1958 goto out_no_base_object;
1960 args->handle = vmw_user_bo->base.hash.key;
1965 ttm_read_unlock(&vmaster->lock);
1969 int vmw_dumb_map_offset(struct drm_file *file_priv,
1970 struct drm_device *dev, uint32_t handle,
1973 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1974 struct vmw_dma_buffer *out_buf;
1977 ret = vmw_user_dmabuf_lookup(tfile, handle, &out_buf);
1981 *offset = out_buf->base.addr_space_offset;
1982 vmw_dmabuf_unreference(&out_buf);
1986 int vmw_dumb_destroy(struct drm_file *file_priv,
1987 struct drm_device *dev,
1990 return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
1991 handle, TTM_REF_USAGE);