intel_bo.c

  1// SPDX-License-Identifier: MIT
  2/* Copyright © 2024 Intel Corporation */
  3
  4#include <drm/drm_gem.h>
  5
  6#include "xe_bo.h"
  7#include "intel_bo.h"
  8#include "intel_frontbuffer.h"
  9
 10bool intel_bo_is_tiled(struct drm_gem_object *obj)
 11{
 12	/* legacy tiling is unused */
 13	return false;
 14}
 15
 16bool intel_bo_is_userptr(struct drm_gem_object *obj)
 17{
 18	/* xe does not have userptr bos */
 19	return false;
 20}
 21
 22bool intel_bo_is_shmem(struct drm_gem_object *obj)
 23{
 24	return false;
 25}
 26
 27bool intel_bo_is_protected(struct drm_gem_object *obj)
 28{
 29	return xe_bo_is_protected(gem_to_xe_bo(obj));
 30}
 31
 32int intel_bo_fb_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
 33{
 34	return drm_gem_prime_mmap(obj, vma);
 35}
 36
 37int intel_bo_read_from_page(struct drm_gem_object *obj, u64 offset, void *dst, int size)
 38{
 39	struct xe_bo *bo = gem_to_xe_bo(obj);
 40
 41	return xe_bo_read(bo, offset, dst, size);
 42}
 43
 44struct xe_frontbuffer {
 45	struct intel_frontbuffer base;
 46	struct drm_gem_object *obj;
 47	struct kref ref;
 48};
 49
 50struct intel_frontbuffer *intel_bo_frontbuffer_get(struct drm_gem_object *obj)
 51{
 52	struct xe_frontbuffer *front;
 53
 54	front = kmalloc(sizeof(*front), GFP_KERNEL);
 55	if (!front)
 56		return NULL;
 57
 58	intel_frontbuffer_init(&front->base, obj->dev);
 59
 60	kref_init(&front->ref);
 61
 62	drm_gem_object_get(obj);
 63	front->obj = obj;
 64
 65	return &front->base;
 66}
 67
 68void intel_bo_frontbuffer_ref(struct intel_frontbuffer *_front)
 69{
 70	struct xe_frontbuffer *front =
 71		container_of(_front, typeof(*front), base);
 72
 73	kref_get(&front->ref);
 74}
 75
 76static void frontbuffer_release(struct kref *ref)
 77{
 78	struct xe_frontbuffer *front =
 79		container_of(ref, typeof(*front), ref);
 80
 81	intel_frontbuffer_fini(&front->base);
 82
 83	drm_gem_object_put(front->obj);
 84
 85	kfree(front);
 86}
 87
 88void intel_bo_frontbuffer_put(struct intel_frontbuffer *_front)
 89{
 90	struct xe_frontbuffer *front =
 91		container_of(_front, typeof(*front), base);
 92
 93	kref_put(&front->ref, frontbuffer_release);
 94}
 95
 96void intel_bo_frontbuffer_flush_for_display(struct intel_frontbuffer *front)
 97{
 98}
 99
100void intel_bo_describe(struct seq_file *m, struct drm_gem_object *obj)
101{
102	/* FIXME */
103}