ttm_device.h | Explore in Territory

/*
 * Copyright 2020 Advanced Micro Devices, Inc.
 *
 * 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: Christian König
 */

#ifndef _TTM_DEVICE_H_
#define _TTM_DEVICE_H_

#include <linux/types.h>
#include <linux/workqueue.h>
#include <drm/ttm/ttm_resource.h>
#include <drm/ttm/ttm_pool.h>

struct ttm_device;
struct ttm_placement;
struct ttm_buffer_object;
struct ttm_operation_ctx;

/**
 * struct ttm_global - Buffer object driver global data.
 */
extern struct ttm_global { … } ttm_glob;

struct ttm_device_funcs { … };

/**
 * struct ttm_device - Buffer object driver device-specific data.
 */
struct ttm_device { … };

int ttm_global_swapout(struct ttm_operation_ctx *ctx, gfp_t gfp_flags);
int ttm_device_swapout(struct ttm_device *bdev, struct ttm_operation_ctx *ctx,
		       gfp_t gfp_flags);

static inline struct ttm_resource_manager *
ttm_manager_type(struct ttm_device *bdev, int mem_type)
{ … }

static inline void ttm_set_driver_manager(struct ttm_device *bdev, int type,
					  struct ttm_resource_manager *manager)
{ … }

int ttm_device_init(struct ttm_device *bdev, const struct ttm_device_funcs *funcs,
		    struct device *dev, struct address_space *mapping,
		    struct drm_vma_offset_manager *vma_manager,
		    bool use_dma_alloc, bool use_dma32);
void ttm_device_fini(struct ttm_device *bdev);
void ttm_device_clear_dma_mappings(struct ttm_device *bdev);

#endif
linux/include/drm/ttm/ttm_device.h
