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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2021 Intel Corporation
*/
#include <drm/drm_modeset_helper.h>
#include <drm/ttm/ttm_bo.h>
#include "intel_display_types.h"
#include "intel_fb.h"
#include "intel_fb_bo.h"
#include "xe_bo.h"
void intel_fb_bo_framebuffer_fini(struct xe_bo *bo)
{
if (bo->flags & XE_BO_FLAG_PINNED) {
/* Unpin our kernel fb first */
xe_bo_lock(bo, false);
xe_bo_unpin(bo);
xe_bo_unlock(bo);
}
xe_bo_put(bo);
}
int intel_fb_bo_framebuffer_init(struct intel_framebuffer *intel_fb,
struct xe_bo *bo,
struct drm_mode_fb_cmd2 *mode_cmd)
{
struct xe_device *xe = to_xe_device(bo->ttm.base.dev);
int ret;
/*
* Some modifiers require physical alignment of 64KiB VRAM pages;
* require that the BO in those cases is created correctly.
*/
if (XE_IOCTL_DBG(xe, intel_fb_needs_64k_phys(mode_cmd->modifier[0]) &&
!(bo->flags & XE_BO_FLAG_NEEDS_64K)))
return -EINVAL;
xe_bo_get(bo);
ret = ttm_bo_reserve(&bo->ttm, true, false, NULL);
if (ret)
goto err;
if (!(bo->flags & XE_BO_FLAG_SCANOUT)) {
/*
* XE_BO_FLAG_SCANOUT should ideally be set at creation, or is
* automatically set when creating FB. We cannot change caching
* mode when the boect is VM_BINDed, so we can only set
* coherency with display when unbound.
*/
if (XE_IOCTL_DBG(xe, !list_empty(&bo->ttm.base.gpuva.list))) {
ttm_bo_unreserve(&bo->ttm);
ret = -EINVAL;
goto err;
}
bo->flags |= XE_BO_FLAG_SCANOUT;
}
ttm_bo_unreserve(&bo->ttm);
return 0;
err:
xe_bo_put(bo);
return ret;
}
struct xe_bo *intel_fb_bo_lookup_valid_bo(struct drm_i915_private *i915,
struct drm_file *filp,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
struct drm_i915_gem_object *bo;
struct drm_gem_object *gem = drm_gem_object_lookup(filp, mode_cmd->handles[0]);
if (!gem)
return ERR_PTR(-ENOENT);
bo = gem_to_xe_bo(gem);
/* Require vram placement or dma-buf import */
if (IS_DGFX(i915) &&
!xe_bo_can_migrate(gem_to_xe_bo(gem), XE_PL_VRAM0) &&
bo->ttm.type != ttm_bo_type_sg) {
drm_gem_object_put(gem);
return ERR_PTR(-EREMOTE);
}
return bo;
}
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