asdk-libdrm

/**************************************************************************

 * 

 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.

 * All Rights Reserved.

 * 

 * 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, sub license, 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 NON-INFRINGEMENT.

 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.

 * 

 **************************************************************************/

​

/* Originally a fake version of the buffer manager so that we can

 * prototype the changes in a driver fairly quickly, has been fleshed

 * out to a fully functional interim solution.

 *

 * Basically wraps the old style memory management in the new

 * programming interface, but is more expressive and avoids many of

 * the bugs in the old texture manager.

 */

​

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

​

#include <stdlib.h>

#include <string.h>

#include <assert.h>

#include <errno.h>

#include <xf86drm.h>

#include <pthread.h>

#include "intel_bufmgr.h"

#include "intel_bufmgr_priv.h"

#include "drm.h"

#include "i915_drm.h"

#include "mm.h"

#include "libdrm_lists.h"

​

/* Support gcc's __FUNCTION__ for people using other compilers */

#if !defined(__GNUC__) && !defined(__FUNCTION__)

# define __FUNCTION__ __func__ /* C99 */

#endif

​

#define DBG(...) do {                   \

    if (bufmgr_fake->bufmgr.debug)          \

        drmMsg(__VA_ARGS__);            \

} while (0)

​

/* Internal flags:

 */

#define BM_NO_BACKING_STORE         0x00000001

#define BM_NO_FENCE_SUBDATA         0x00000002

#define BM_PINNED               0x00000004

​

/* Wrapper around mm.c's mem_block, which understands that you must

 * wait for fences to expire before memory can be freed.  This is

 * specific to our use of memcpy for uploads - an upload that was

 * processed through the command queue wouldn't need to care about

 * fences.

 */

#define MAX_RELOCS 4096

​

struct fake_buffer_reloc {

    /** Buffer object that the relocation points at. */

    drm_intel_bo *target_buf;

    /** Offset of the relocation entry within reloc_buf. */

    uint32_t offset;

    /**

     * Cached value of the offset when we last performed this relocation.

     */

    uint32_t last_target_offset;

    /** Value added to target_buf's offset to get the relocation entry. */

    uint32_t delta;

    /** Cache domains the target buffer is read into. */

    uint32_t read_domains;

    /** Cache domain the target buffer will have dirty cachelines in. */

    uint32_t write_domain;