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/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
* 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 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
* THE COPYRIGHT HOLDERS, AUTHORS 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.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/*
* Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
*/
#include <xf86drm.h>
#include <stdlib.h>
#include <unistd.h>
#include "dri_bufpool.h"
/*
* Buffer pool implementation using DRM buffer objects as DRI buffer objects.
*/
static void *
pool_create(struct _DriBufferPool *pool,
unsigned long size, unsigned flags, unsigned hint,
unsigned alignment)
{
drmBO *buf = (drmBO *) malloc(sizeof(*buf));
int ret;
unsigned pageSize = getpagesize();
if (!buf)
return NULL;
if ((alignment > pageSize) && (alignment % pageSize)) {
return NULL;
}
ret = drmBOCreate(pool->fd, 0, size, alignment / pageSize,
NULL, drm_bo_type_dc,
flags, hint, buf);
if (ret) {
free(buf);
return NULL;
}
return (void *) buf;
}
static int
pool_destroy(struct _DriBufferPool *pool, void *private)
{
int ret;
drmBO *buf = (drmBO *) private;
ret = drmBODestroy(pool->fd, buf);
free(buf);
return ret;
}
static int
pool_map(struct _DriBufferPool *pool, void *private, unsigned flags,
int hint, void **virtual)
{
drmBO *buf = (drmBO *) private;
return drmBOMap(pool->fd, buf, flags, hint, virtual);
}
static int
pool_unmap(struct _DriBufferPool *pool, void *private)
{
drmBO *buf = (drmBO *) private;
return drmBOUnmap(pool->fd, buf);
}
static unsigned long
pool_offset(struct _DriBufferPool *pool, void *private)
{
drmBO *buf = (drmBO *) private;
return buf->offset;
}
static unsigned
pool_flags(struct _DriBufferPool *pool, void *private)
{
drmBO *buf = (drmBO *) private;
return buf->flags;
}
static unsigned long
pool_size(struct _DriBufferPool *pool, void *private)
{
drmBO *buf = (drmBO *) private;
return buf->size;
}
static int
pool_fence(struct _DriBufferPool *pool, void *private,
struct _DriFenceObject *fence)
{
/*
* Noop. The kernel handles all fencing.
*/
return 0;
}
static drmBO *
pool_kernel(struct _DriBufferPool *pool, void *private)
{
return (drmBO *) private;
}
static int
pool_waitIdle(struct _DriBufferPool *pool, void *private, int lazy)
{
drmBO *buf = (drmBO *) private;
return drmBOWaitIdle(pool->fd, buf, (lazy) ? DRM_BO_HINT_WAIT_LAZY:0);
}
static void
pool_takedown(struct _DriBufferPool *pool)
{
free(pool);
}
struct _DriBufferPool *
driDRMPoolInit(int fd)
{
struct _DriBufferPool *pool;
pool = (struct _DriBufferPool *) malloc(sizeof(*pool));
if (!pool)
return NULL;
pool->fd = fd;
pool->map = &pool_map;
pool->unmap = &pool_unmap;
pool->destroy = &pool_destroy;
pool->offset = &pool_offset;
pool->flags = &pool_flags;
pool->size = &pool_size;
pool->create = &pool_create;
pool->fence = &pool_fence;
pool->kernel = &pool_kernel;
pool->validate = NULL;
pool->setstatic = NULL;
pool->waitIdle = &pool_waitIdle;
pool->takeDown = &pool_takedown;
pool->data = NULL;
return pool;
}
static void *
pool_setstatic(struct _DriBufferPool *pool, unsigned long offset,
unsigned long size, void *virtual, unsigned flags)
{
drmBO *buf = (drmBO *) malloc(sizeof(*buf));
int ret;
if (!buf)
return NULL;
ret = drmBOCreate(pool->fd, offset, size, 0, NULL, drm_bo_type_fake,
flags, DRM_BO_HINT_DONT_FENCE, buf);
if (ret) {
free(buf);
return NULL;
}
buf->virtual = virtual;
return (void *) buf;
}
struct _DriBufferPool *
driDRMStaticPoolInit(int fd)
{
struct _DriBufferPool *pool;
pool = (struct _DriBufferPool *) malloc(sizeof(*pool));
if (!pool)
return NULL;
pool->fd = fd;
pool->map = &pool_map;
pool->unmap = &pool_unmap;
pool->destroy = &pool_destroy;
pool->offset = &pool_offset;
pool->flags = &pool_flags;
pool->size = &pool_size;
pool->create = NULL;
pool->fence = &pool_fence;
pool->kernel = &pool_kernel;
pool->validate = NULL;
pool->setstatic = &pool_setstatic;
pool->waitIdle = &pool_waitIdle;
pool->takeDown = &pool_takedown;
pool->data = NULL;
return pool;
}
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