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 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 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 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