drm/libdrm/intel/intel_bufmgr.c

/*
 * Copyright © 2007 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>
 *
 */

#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <assert.h>
#include <errno.h>
#include <drm.h>
#include <i915_drm.h>
#include "intel_bufmgr.h"
#include "intel_bufmgr_priv.h"

/** @file dri_bufmgr.c
 *
 * Convenience functions for buffer management methods.
 */

dri_bo *
dri_bo_alloc(dri_bufmgr *bufmgr, const char *name, unsigned long size,
	     unsigned int alignment)
{
   return bufmgr->bo_alloc(bufmgr, name, size, alignment);
}

void
dri_bo_reference(dri_bo *bo)
{
   bo->bufmgr->bo_reference(bo);
}

void
dri_bo_unreference(dri_bo *bo)
{
   if (bo == NULL)
      return;

   bo->bufmgr->bo_unreference(bo);
}

int
dri_bo_map(dri_bo *buf, int write_enable)
{
   return buf->bufmgr->bo_map(buf, write_enable);
}

int
dri_bo_unmap(dri_bo *buf)
{
   return buf->bufmgr->bo_unmap(buf);
}

int
dri_bo_subdata(dri_bo *bo, unsigned long offset,
	       unsigned long size, const void *data)
{
   int ret;
   if (bo->bufmgr->bo_subdata)
      return bo->bufmgr->bo_subdata(bo, offset, size, data);
   if (size == 0 || data == NULL)
      return 0;

   ret = dri_bo_map(bo, 1);
   if (ret)
       return ret;
   memcpy((unsigned char *)bo->virtual + offset, data, size);
   dri_bo_unmap(bo);
   return 0;
}

int
dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
		   unsigned long size, void *data)
{
   int ret;
   if (bo->bufmgr->bo_subdata)
      return bo->bufmgr->bo_get_subdata(bo, offset, size, data);

   if (size == 0 || data == NULL)
      return 0;

   ret = dri_bo_map(bo, 0);
   if (ret)
       return ret;
   memcpy(data, (unsigned char *)bo->virtual + offset, size);
   dri_bo_unmap(bo);
   return 0;
}

void
dri_bo_wait_rendering(dri_bo *bo)
{
   bo->bufmgr->bo_wait_rendering(bo);
}

void
dri_bufmgr_destroy(dri_bufmgr *bufmgr)
{
   bufmgr->destroy(bufmgr);
}

int
dri_bo_exec(dri_bo *bo, int used,
	    drm_clip_rect_t *cliprects, int num_cliprects,
	    int DR4)
{
   return bo->bufmgr->bo_exec(bo, used, cliprects, num_cliprects, DR4);
}

void
dri_bufmgr_set_debug(dri_bufmgr *bufmgr, int enable_debug)
{
   bufmgr->debug = enable_debug;
}

int
dri_bufmgr_check_aperture_space(dri_bo **bo_array, int count)
{
	return bo_array[0]->bufmgr->check_aperture_space(bo_array, count);
}

int
dri_bo_flink(dri_bo *bo, uint32_t *name)
{
    if (bo->bufmgr->bo_flink)
	return bo->bufmgr->bo_flink(bo, name);

    return -ENODEV;
}

int
dri_bo_emit_reloc(dri_bo *reloc_buf,
		  uint32_t read_domains, uint32_t write_domain,
		  uint32_t delta, uint32_t offset, dri_bo *target_buf)
{
    return reloc_buf->bufmgr->bo_emit_reloc(reloc_buf,
					    read_domains, write_domain,
					    delta, offset, target_buf);
}

int
dri_bo_pin(dri_bo *bo, uint32_t alignment)
{
    if (bo->bufmgr->bo_pin)
	return bo->bufmgr->bo_pin(bo, alignment);

    return -ENODEV;
}

int
dri_bo_unpin(dri_bo *bo)
{
    if (bo->bufmgr->bo_unpin)
	return bo->bufmgr->bo_unpin(bo);

    return -ENODEV;
}

int dri_bo_set_tiling(dri_bo *bo, uint32_t *tiling_mode)
{
    if (bo->bufmgr->bo_set_tiling)
	return bo->bufmgr->bo_set_tiling(bo, tiling_mode);

    *tiling_mode = I915_TILING_NONE;
    return 0;
}