1 /* SPDX-License-Identifier: MIT */
2 /*
3 * Copyright © 2021 Intel Corporation
4 */
5
6 #include <drm/drm_modeset_helper.h>
7 #include <drm/ttm/ttm_bo.h>
8
9 #include "intel_display_types.h"
10 #include "intel_fb.h"
11 #include "intel_fb_bo.h"
12 #include "xe_bo.h"
13
intel_fb_bo_framebuffer_fini(struct xe_bo * bo)14 void intel_fb_bo_framebuffer_fini(struct xe_bo *bo)
15 {
16 if (bo->flags & XE_BO_FLAG_PINNED) {
17 /* Unpin our kernel fb first */
18 xe_bo_lock(bo, false);
19 xe_bo_unpin(bo);
20 xe_bo_unlock(bo);
21 }
22 xe_bo_put(bo);
23 }
24
intel_fb_bo_framebuffer_init(struct intel_framebuffer * intel_fb,struct xe_bo * bo,struct drm_mode_fb_cmd2 * mode_cmd)25 int intel_fb_bo_framebuffer_init(struct intel_framebuffer *intel_fb,
26 struct xe_bo *bo,
27 struct drm_mode_fb_cmd2 *mode_cmd)
28 {
29 struct xe_device *xe = to_xe_device(bo->ttm.base.dev);
30 int ret;
31
32 /*
33 * Some modifiers require physical alignment of 64KiB VRAM pages;
34 * require that the BO in those cases is created correctly.
35 */
36 if (XE_IOCTL_DBG(xe, intel_fb_needs_64k_phys(mode_cmd->modifier[0]) &&
37 !(bo->flags & XE_BO_FLAG_NEEDS_64K)))
38 return -EINVAL;
39
40 xe_bo_get(bo);
41
42 ret = ttm_bo_reserve(&bo->ttm, true, false, NULL);
43 if (ret)
44 goto err;
45
46 if (!(bo->flags & XE_BO_FLAG_SCANOUT)) {
47 /*
48 * XE_BO_FLAG_SCANOUT should ideally be set at creation, or is
49 * automatically set when creating FB. We cannot change caching
50 * mode when the boect is VM_BINDed, so we can only set
51 * coherency with display when unbound.
52 */
53 if (XE_IOCTL_DBG(xe, !list_empty(&bo->ttm.base.gpuva.list))) {
54 ttm_bo_unreserve(&bo->ttm);
55 ret = -EINVAL;
56 goto err;
57 }
58 bo->flags |= XE_BO_FLAG_SCANOUT;
59 }
60 ttm_bo_unreserve(&bo->ttm);
61 return 0;
62
63 err:
64 xe_bo_put(bo);
65 return ret;
66 }
67
intel_fb_bo_lookup_valid_bo(struct drm_i915_private * i915,struct drm_file * filp,const struct drm_mode_fb_cmd2 * mode_cmd)68 struct xe_bo *intel_fb_bo_lookup_valid_bo(struct drm_i915_private *i915,
69 struct drm_file *filp,
70 const struct drm_mode_fb_cmd2 *mode_cmd)
71 {
72 struct drm_i915_gem_object *bo;
73 struct drm_gem_object *gem = drm_gem_object_lookup(filp, mode_cmd->handles[0]);
74
75 if (!gem)
76 return ERR_PTR(-ENOENT);
77
78 bo = gem_to_xe_bo(gem);
79 /* Require vram placement or dma-buf import */
80 if (IS_DGFX(i915) &&
81 !xe_bo_can_migrate(gem_to_xe_bo(gem), XE_PL_VRAM0) &&
82 bo->ttm.type != ttm_bo_type_sg) {
83 drm_gem_object_put(gem);
84 return ERR_PTR(-EREMOTE);
85 }
86
87 return bo;
88 }
89