65 lines
1.2 KiB
C
65 lines
1.2 KiB
C
/* SPDX-License-Identifier: MIT */
|
|
/*
|
|
* Copyright © 2022 Intel Corporation
|
|
*/
|
|
|
|
#ifndef _I915_GEM_OBJECT_H_
|
|
#define _I915_GEM_OBJECT_H_
|
|
|
|
#include <linux/types.h>
|
|
|
|
#include "xe_bo.h"
|
|
|
|
#define i915_gem_object_is_shmem(obj) (0) /* We don't use shmem */
|
|
|
|
static inline dma_addr_t i915_gem_object_get_dma_address(const struct xe_bo *bo, pgoff_t n)
|
|
{
|
|
/* Should never be called */
|
|
WARN_ON(1);
|
|
return n;
|
|
}
|
|
|
|
static inline bool i915_gem_object_is_tiled(const struct xe_bo *bo)
|
|
{
|
|
/* legacy tiling is unused */
|
|
return false;
|
|
}
|
|
|
|
static inline bool i915_gem_object_is_userptr(const struct xe_bo *bo)
|
|
{
|
|
/* legacy tiling is unused */
|
|
return false;
|
|
}
|
|
|
|
static inline int i915_gem_object_read_from_page(struct xe_bo *bo,
|
|
u32 ofs, u64 *ptr, u32 size)
|
|
{
|
|
struct ttm_bo_kmap_obj map;
|
|
void *src;
|
|
bool is_iomem;
|
|
int ret;
|
|
|
|
ret = xe_bo_lock(bo, true);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ttm_bo_kmap(&bo->ttm, ofs >> PAGE_SHIFT, 1, &map);
|
|
if (ret)
|
|
goto out_unlock;
|
|
|
|
ofs &= ~PAGE_MASK;
|
|
src = ttm_kmap_obj_virtual(&map, &is_iomem);
|
|
src += ofs;
|
|
if (is_iomem)
|
|
memcpy_fromio(ptr, (void __iomem *)src, size);
|
|
else
|
|
memcpy(ptr, src, size);
|
|
|
|
ttm_bo_kunmap(&map);
|
|
out_unlock:
|
|
xe_bo_unlock(bo);
|
|
return ret;
|
|
}
|
|
|
|
#endif
|