1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2021 Intel Corporation 4 */ 5 6 #include <drm/drm_modeset_helper.h> 7 8 #include "i915_drv.h" 9 #include "intel_display_types.h" 10 #include "intel_fb_bo.h" 11 12 void intel_fb_bo_framebuffer_fini(struct xe_bo *bo) 13 { 14 if (bo->flags & XE_BO_FLAG_PINNED) { 15 /* Unpin our kernel fb first */ 16 xe_bo_lock(bo, false); 17 xe_bo_unpin(bo); 18 xe_bo_unlock(bo); 19 } 20 xe_bo_put(bo); 21 } 22 23 int intel_fb_bo_framebuffer_init(struct intel_framebuffer *intel_fb, 24 struct xe_bo *bo, 25 struct drm_mode_fb_cmd2 *mode_cmd) 26 { 27 struct drm_i915_private *i915 = to_i915(bo->ttm.base.dev); 28 int ret; 29 30 xe_bo_get(bo); 31 32 ret = ttm_bo_reserve(&bo->ttm, true, false, NULL); 33 if (ret) 34 goto err; 35 36 if (!(bo->flags & XE_BO_FLAG_SCANOUT)) { 37 /* 38 * XE_BO_FLAG_SCANOUT should ideally be set at creation, or is 39 * automatically set when creating FB. We cannot change caching 40 * mode when the boect is VM_BINDed, so we can only set 41 * coherency with display when unbound. 42 */ 43 if (XE_IOCTL_DBG(i915, !list_empty(&bo->ttm.base.gpuva.list))) { 44 ttm_bo_unreserve(&bo->ttm); 45 ret = -EINVAL; 46 goto err; 47 } 48 bo->flags |= XE_BO_FLAG_SCANOUT; 49 } 50 ttm_bo_unreserve(&bo->ttm); 51 return 0; 52 53 err: 54 xe_bo_put(bo); 55 return ret; 56 } 57 58 struct xe_bo *intel_fb_bo_lookup_valid_bo(struct drm_i915_private *i915, 59 struct drm_file *filp, 60 const struct drm_mode_fb_cmd2 *mode_cmd) 61 { 62 struct drm_i915_gem_object *bo; 63 struct drm_gem_object *gem = drm_gem_object_lookup(filp, mode_cmd->handles[0]); 64 65 if (!gem) 66 return ERR_PTR(-ENOENT); 67 68 bo = gem_to_xe_bo(gem); 69 /* Require vram placement or dma-buf import */ 70 if (IS_DGFX(i915) && 71 !xe_bo_can_migrate(gem_to_xe_bo(gem), XE_PL_VRAM0) && 72 bo->ttm.type != ttm_bo_type_sg) { 73 drm_gem_object_put(gem); 74 return ERR_PTR(-EREMOTE); 75 } 76 77 return bo; 78 } 79