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/*

 * Copyright 2008 Advanced Micro Devices, Inc.

 * Copyright 2008 Red Hat Inc.

 * Copyright 2009 Jerome Glisse.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 * OTHER DEALINGS IN THE SOFTWARE.

 *

 * Authors: Dave Airlie

 *          Alex Deucher

 *          Jerome Glisse

 */

#ifndef __RADEON_OBJECT_H__

#define __RADEON_OBJECT_H__

#include 

#include "radeon.h"

/**

 * radeon_mem_type_to_domain - return domain corresponding to mem_type

 * @mem_type:	ttm memory type

 *

 * Returns corresponding domain of the ttm mem_type

 */

static inline unsigned radeon_mem_type_to_domain(u32 mem_type)

{

	switch (mem_type) {

	case TTM_PL_VRAM:

		return RADEON_GEM_DOMAIN_VRAM;

	case TTM_PL_TT:

		return RADEON_GEM_DOMAIN_GTT;

	case TTM_PL_SYSTEM:

		return RADEON_GEM_DOMAIN_CPU;

	default:

		break;

	}

	return 0;

}

/**

 * radeon_bo_reserve - reserve bo

 * @bo:		bo structure

 * @no_wait:		don't sleep while trying to reserve (return -EBUSY)

 *

 * Returns:

 * -EBUSY: buffer is busy and @no_wait is true

 * -ERESTART: A wait for the buffer to become unreserved was interrupted by

 * a signal. Release all buffer reservations and return to user-space.

     */

static inline int radeon_bo_reserve(struct radeon_bo *bo, bool no_wait)

{

	int r;

retry:

	r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0);

	if (unlikely(r != 0)) {

		if (r == -ERESTART)

			goto retry;

		dev_err(bo->rdev->dev, "%p reserve failed\n", bo);

		return r;

	}

	return 0;

}

static inline void radeon_bo_unreserve(struct radeon_bo *bo)

{

	ttm_bo_unreserve(&bo->tbo);

}

/**

 * radeon_bo_gpu_offset - return GPU offset of bo

 * @bo:	radeon object for which we query the offset

     *

 * Returns current GPU offset of the object.

     *

 * Note: object should either be pinned or reserved when calling this

 * function, it might be usefull to add check for this for debugging.

     */

static inline u64 radeon_bo_gpu_offset(struct radeon_bo *bo)

{

	return bo->tbo.offset;

}

static inline unsigned long radeon_bo_size(struct radeon_bo *bo)

{

	return bo->tbo.num_pages << PAGE_SHIFT;

}

static inline bool radeon_bo_is_reserved(struct radeon_bo *bo)

{

	return !!atomic_read(&bo->tbo.reserved);

}

/**

 * radeon_bo_mmap_offset - return mmap offset of bo

 * @bo:	radeon object for which we query the offset

     *

 * Returns mmap offset of the object.

     *

 * Note: addr_space_offset is constant after ttm bo init thus isn't protected

 * by any lock.

     */

static inline u64 radeon_bo_mmap_offset(struct radeon_bo *bo)

{

	return bo->tbo.addr_space_offset;

}

static inline int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type,

					bool no_wait)

{

	int r;

retry:

	r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0);

	if (unlikely(r != 0)) {

		if (r == -ERESTART)

			goto retry;

		dev_err(bo->rdev->dev, "%p reserve failed for wait\n", bo);

		return r;

	}

	spin_lock(&bo->tbo.lock);

	if (mem_type)

		*mem_type = bo->tbo.mem.mem_type;

	if (bo->tbo.sync_obj)

		r = ttm_bo_wait(&bo->tbo, true, true, no_wait);

	spin_unlock(&bo->tbo.lock);

	ttm_bo_unreserve(&bo->tbo);

	if (unlikely(r == -ERESTART))

		goto retry;

	return r;

}

extern int radeon_bo_create(struct radeon_device *rdev,

				struct drm_gem_object *gobj, unsigned long size,

				bool kernel, u32 domain,

				struct radeon_bo **bo_ptr);

extern int radeon_bo_kmap(struct radeon_bo *bo, void **ptr);

extern void radeon_bo_kunmap(struct radeon_bo *bo);

extern void radeon_bo_unref(struct radeon_bo **bo);

extern int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr);

extern int radeon_bo_unpin(struct radeon_bo *bo);

extern int radeon_bo_evict_vram(struct radeon_device *rdev);

extern void radeon_bo_force_delete(struct radeon_device *rdev);

extern int radeon_bo_init(struct radeon_device *rdev);

extern void radeon_bo_fini(struct radeon_device *rdev);

extern void radeon_bo_list_add_object(struct radeon_bo_list *lobj,

				struct list_head *head);

extern int radeon_bo_list_reserve(struct list_head *head);

extern void radeon_bo_list_unreserve(struct list_head *head);

extern int radeon_bo_list_validate(struct list_head *head, void *fence);

extern void radeon_bo_list_unvalidate(struct list_head *head, void *fence);

extern int radeon_bo_fbdev_mmap(struct radeon_bo *bo,

				struct vm_area_struct *vma);

extern int radeon_bo_set_tiling_flags(struct radeon_bo *bo,

				u32 tiling_flags, u32 pitch);

extern void radeon_bo_get_tiling_flags(struct radeon_bo *bo,

				u32 *tiling_flags, u32 *pitch);

extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,

				bool force_drop);

extern void radeon_bo_move_notify(struct ttm_buffer_object *bo,

					struct ttm_mem_reg *mem);

extern void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);

extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);

#endif