linux-core/savage_state.c


1

../shared-core/savage_state.c
/*
 * Copyright © 2008 Intel Corporation
 *
 * 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 (including the next
 * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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:
 *    Eric Anholt <eric@anholt.net>
 *
 */

/**
 * @file intel_bufmgr.h
 *
 * Public definitions of Intel-specific bufmgr functions.
 */

#ifndef INTEL_BUFMGR_H
#define INTEL_BUFMGR_H

#include <stdint.h>

typedef struct _drm_intel_bufmgr drm_intel_bufmgr;
typedef struct _drm_intel_bo drm_intel_bo;

struct _drm_intel_bo {
    /**
     * Size in bytes of the buffer object.
     *
     * The size may be larger than the size originally requested for the
     * allocation, such as being aligned to page size.
     */
    unsigned long size;
    /**
     * Alignment requirement for object
     *
     * Used for GTT mapping & pinning the object.
     */
    unsigned long align;

    /**
     * Card virtual address (offset from the beginning of the aperture) for the
     * object.  Only valid while validated.
     */
    unsigned long offset;
    /**
     * Virtual address for accessing the buffer data.  Only valid while mapped.
     */
    void *virtual;

    /** Buffer manager context associated with this buffer object */
    drm_intel_bufmgr *bufmgr;

    /**
     * MM-specific handle for accessing object
     */
    int handle;
};

drm_intel_bo *drm_intel_bo_alloc(drm_intel_bufmgr *bufmgr, const char *name,
				 unsigned long size, unsigned int alignment);
void drm_intel_bo_reference(drm_intel_bo *bo);
void drm_intel_bo_unreference(drm_intel_bo *bo);
int drm_intel_bo_map(drm_intel_bo *bo, int write_enable);
int drm_intel_bo_unmap(drm_intel_bo *bo);

int drm_intel_bo_subdata(drm_intel_bo *bo, unsigned long offset,
		     unsigned long size, const void *data);
int drm_intel_bo_get_subdata(drm_intel_bo *bo, unsigned long offset,
			 unsigned long size, void *data);
void drm_intel_bo_wait_rendering(drm_intel_bo *bo);

void drm_intel_bufmgr_set_debug(drm_intel_bufmgr *bufmgr, int enable_debug);
void drm_intel_bufmgr_destroy(drm_intel_bufmgr *bufmgr);
int drm_intel_bo_exec(drm_intel_bo *bo, int used,
		      drm_clip_rect_t *cliprects, int num_cliprects,
		      int DR4);
int drm_intel_bufmgr_check_aperture_space(drm_intel_bo **bo_array, int count);

int drm_intel_bo_emit_reloc(drm_intel_bo *bo, uint32_t offset,
			    drm_intel_bo *target_bo, uint32_t target_offset,
			    uint32_t read_domains, uint32_t write_domain);
int drm_intel_bo_pin(drm_intel_bo *bo, uint32_t alignment);
int drm_intel_bo_unpin(drm_intel_bo *bo);
int drm_intel_bo_set_tiling(drm_intel_bo *bo, uint32_t *tiling_mode,
			    uint32_t stride);
int drm_intel_bo_get_tiling(drm_intel_bo *bo, uint32_t *tiling_mode,
			uint32_t *swizzle_mode);