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 14 void intel_fb_bo_framebuffer_fini(struct drm_gem_object *obj) 15 { 16 struct xe_bo *bo = gem_to_xe_bo(obj); 17 18 if (bo->flags & XE_BO_FLAG_PINNED) { 19 /* Unpin our kernel fb first */ 20 xe_bo_lock(bo, false); 21 xe_bo_unpin(bo); 22 xe_bo_unlock(bo); 23 } 24 xe_bo_put(bo); 25 } 26 27 int intel_fb_bo_framebuffer_init(struct intel_framebuffer *intel_fb, 28 struct drm_gem_object *obj, 29 struct drm_mode_fb_cmd2 *mode_cmd) 30 { 31 struct xe_bo *bo = gem_to_xe_bo(obj); 32 struct xe_device *xe = to_xe_device(bo->ttm.base.dev); 33 int ret; 34 35 /* 36 * Some modifiers require physical alignment of 64KiB VRAM pages; 37 * require that the BO in those cases is created correctly. 38 */ 39 if (XE_IOCTL_DBG(xe, intel_fb_needs_64k_phys(mode_cmd->modifier[0]) && 40 !(bo->flags & XE_BO_FLAG_NEEDS_64K))) 41 return -EINVAL; 42 43 xe_bo_get(bo); 44 45 ret = ttm_bo_reserve(&bo->ttm, true, false, NULL); 46 if (ret) 47 goto err; 48 49 if (!(bo->flags & XE_BO_FLAG_SCANOUT)) { 50 /* 51 * XE_BO_FLAG_SCANOUT should ideally be set at creation, or is 52 * automatically set when creating FB. We cannot change caching 53 * mode when the boect is VM_BINDed, so we can only set 54 * coherency with display when unbound. 55 */ 56 if (XE_IOCTL_DBG(xe, !list_empty(&bo->ttm.base.gpuva.list))) { 57 ttm_bo_unreserve(&bo->ttm); 58 ret = -EINVAL; 59 goto err; 60 } 61 bo->flags |= XE_BO_FLAG_SCANOUT; 62 } 63 ttm_bo_unreserve(&bo->ttm); 64 return 0; 65 66 err: 67 xe_bo_put(bo); 68 return ret; 69 } 70 71 struct drm_gem_object *intel_fb_bo_lookup_valid_bo(struct drm_i915_private *i915, 72 struct drm_file *filp, 73 const struct drm_mode_fb_cmd2 *mode_cmd) 74 { 75 struct xe_bo *bo; 76 struct drm_gem_object *gem = drm_gem_object_lookup(filp, mode_cmd->handles[0]); 77 78 if (!gem) 79 return ERR_PTR(-ENOENT); 80 81 bo = gem_to_xe_bo(gem); 82 /* Require vram placement or dma-buf import */ 83 if (IS_DGFX(i915) && 84 !xe_bo_can_migrate(bo, XE_PL_VRAM0) && 85 bo->ttm.type != ttm_bo_type_sg) { 86 drm_gem_object_put(gem); 87 return ERR_PTR(-EREMOTE); 88 } 89 90 return gem; 91 } 92