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 drm_gem_object *obj, 28 struct drm_mode_fb_cmd2 *mode_cmd) 29 { 30 struct xe_bo *bo = gem_to_xe_bo(obj); 31 struct xe_device *xe = to_xe_device(bo->ttm.base.dev); 32 int ret; 33 34 /* 35 * Some modifiers require physical alignment of 64KiB VRAM pages; 36 * require that the BO in those cases is created correctly. 37 */ 38 if (XE_IOCTL_DBG(xe, intel_fb_needs_64k_phys(mode_cmd->modifier[0]) && 39 !(bo->flags & XE_BO_FLAG_NEEDS_64K))) 40 return -EINVAL; 41 42 xe_bo_get(bo); 43 44 ret = ttm_bo_reserve(&bo->ttm, true, false, NULL); 45 if (ret) 46 goto err; 47 48 if (!(bo->flags & XE_BO_FLAG_SCANOUT)) { 49 /* 50 * XE_BO_FLAG_SCANOUT should ideally be set at creation, or is 51 * automatically set when creating FB. We cannot change caching 52 * mode when the bo is VM_BINDed, so we can only set 53 * coherency with display when unbound. 54 */ 55 if (XE_IOCTL_DBG(xe, xe_bo_is_vm_bound(bo))) { 56 ttm_bo_unreserve(&bo->ttm); 57 ret = -EINVAL; 58 goto err; 59 } 60 bo->flags |= XE_BO_FLAG_SCANOUT; 61 } 62 ttm_bo_unreserve(&bo->ttm); 63 return 0; 64 65 err: 66 xe_bo_put(bo); 67 return ret; 68 } 69 70 struct drm_gem_object *intel_fb_bo_lookup_valid_bo(struct drm_device *drm, 71 struct drm_file *filp, 72 const struct drm_mode_fb_cmd2 *mode_cmd) 73 { 74 struct xe_device *xe = to_xe_device(drm); 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(xe) && 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