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1/* SPDX-License-Identifier: MIT */2/*3 * Copyright © 2021 Intel Corporation4 */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 14void 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 25int 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 is49 * automatically set when creating FB. We cannot change caching50 * mode when the boect is VM_BINDed, so we can only set51 * 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 63err:64 xe_bo_put(bo);65 return ret;66}67 68struct 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