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/* 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
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