kolibrios/drivers/video/Gallium/auxiliary/pipebuffer/pb_bufmgr_pool.c
Sergey Semyonov (Serge) 985e4f70b5 Gallium 3D: softpipe driver
git-svn-id: svn://kolibrios.org@3772 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-07-06 12:52:42 +00:00

322 lines
7.6 KiB
C

/**************************************************************************
*
* 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.
*
*
**************************************************************************/
/**
* \file
* Batch buffer pool management.
*
* \author Jose Fonseca <jrfonseca-at-tungstengraphics-dot-com>
* \author Thomas Hellström <thomas-at-tungstengraphics-dot-com>
*/
#include "pipe/p_compiler.h"
#include "util/u_debug.h"
#include "os/os_thread.h"
#include "pipe/p_defines.h"
#include "util/u_memory.h"
#include "util/u_double_list.h"
#include "pb_buffer.h"
#include "pb_bufmgr.h"
/**
* Convenience macro (type safe).
*/
#define SUPER(__derived) (&(__derived)->base)
struct pool_pb_manager
{
struct pb_manager base;
pipe_mutex mutex;
pb_size bufSize;
pb_size bufAlign;
pb_size numFree;
pb_size numTot;
struct list_head free;
struct pb_buffer *buffer;
void *map;
struct pool_buffer *bufs;
};
static INLINE struct pool_pb_manager *
pool_pb_manager(struct pb_manager *mgr)
{
assert(mgr);
return (struct pool_pb_manager *)mgr;
}
struct pool_buffer
{
struct pb_buffer base;
struct pool_pb_manager *mgr;
struct list_head head;
pb_size start;
};
static INLINE struct pool_buffer *
pool_buffer(struct pb_buffer *buf)
{
assert(buf);
return (struct pool_buffer *)buf;
}
static void
pool_buffer_destroy(struct pb_buffer *buf)
{
struct pool_buffer *pool_buf = pool_buffer(buf);
struct pool_pb_manager *pool = pool_buf->mgr;
assert(!pipe_is_referenced(&pool_buf->base.reference));
pipe_mutex_lock(pool->mutex);
LIST_ADD(&pool_buf->head, &pool->free);
pool->numFree++;
pipe_mutex_unlock(pool->mutex);
}
static void *
pool_buffer_map(struct pb_buffer *buf, unsigned flags, void *flush_ctx)
{
struct pool_buffer *pool_buf = pool_buffer(buf);
struct pool_pb_manager *pool = pool_buf->mgr;
void *map;
/* XXX: it will be necessary to remap here to propagate flush_ctx */
pipe_mutex_lock(pool->mutex);
map = (unsigned char *) pool->map + pool_buf->start;
pipe_mutex_unlock(pool->mutex);
return map;
}
static void
pool_buffer_unmap(struct pb_buffer *buf)
{
/* No-op */
}
static enum pipe_error
pool_buffer_validate(struct pb_buffer *buf,
struct pb_validate *vl,
unsigned flags)
{
struct pool_buffer *pool_buf = pool_buffer(buf);
struct pool_pb_manager *pool = pool_buf->mgr;
return pb_validate(pool->buffer, vl, flags);
}
static void
pool_buffer_fence(struct pb_buffer *buf,
struct pipe_fence_handle *fence)
{
struct pool_buffer *pool_buf = pool_buffer(buf);
struct pool_pb_manager *pool = pool_buf->mgr;
pb_fence(pool->buffer, fence);
}
static void
pool_buffer_get_base_buffer(struct pb_buffer *buf,
struct pb_buffer **base_buf,
pb_size *offset)
{
struct pool_buffer *pool_buf = pool_buffer(buf);
struct pool_pb_manager *pool = pool_buf->mgr;
pb_get_base_buffer(pool->buffer, base_buf, offset);
*offset += pool_buf->start;
}
static const struct pb_vtbl
pool_buffer_vtbl = {
pool_buffer_destroy,
pool_buffer_map,
pool_buffer_unmap,
pool_buffer_validate,
pool_buffer_fence,
pool_buffer_get_base_buffer
};
static struct pb_buffer *
pool_bufmgr_create_buffer(struct pb_manager *mgr,
pb_size size,
const struct pb_desc *desc)
{
struct pool_pb_manager *pool = pool_pb_manager(mgr);
struct pool_buffer *pool_buf;
struct list_head *item;
assert(size == pool->bufSize);
assert(pool->bufAlign % desc->alignment == 0);
pipe_mutex_lock(pool->mutex);
if (pool->numFree == 0) {
pipe_mutex_unlock(pool->mutex);
debug_printf("warning: out of fixed size buffer objects\n");
return NULL;
}
item = pool->free.next;
if (item == &pool->free) {
pipe_mutex_unlock(pool->mutex);
debug_printf("error: fixed size buffer pool corruption\n");
return NULL;
}
LIST_DEL(item);
--pool->numFree;
pipe_mutex_unlock(pool->mutex);
pool_buf = LIST_ENTRY(struct pool_buffer, item, head);
assert(!pipe_is_referenced(&pool_buf->base.reference));
pipe_reference_init(&pool_buf->base.reference, 1);
pool_buf->base.alignment = desc->alignment;
pool_buf->base.usage = desc->usage;
return SUPER(pool_buf);
}
static void
pool_bufmgr_flush(struct pb_manager *mgr)
{
/* No-op */
}
static void
pool_bufmgr_destroy(struct pb_manager *mgr)
{
struct pool_pb_manager *pool = pool_pb_manager(mgr);
pipe_mutex_lock(pool->mutex);
FREE(pool->bufs);
pb_unmap(pool->buffer);
pb_reference(&pool->buffer, NULL);
pipe_mutex_unlock(pool->mutex);
FREE(mgr);
}
struct pb_manager *
pool_bufmgr_create(struct pb_manager *provider,
pb_size numBufs,
pb_size bufSize,
const struct pb_desc *desc)
{
struct pool_pb_manager *pool;
struct pool_buffer *pool_buf;
pb_size i;
if(!provider)
return NULL;
pool = CALLOC_STRUCT(pool_pb_manager);
if (!pool)
return NULL;
pool->base.destroy = pool_bufmgr_destroy;
pool->base.create_buffer = pool_bufmgr_create_buffer;
pool->base.flush = pool_bufmgr_flush;
LIST_INITHEAD(&pool->free);
pool->numTot = numBufs;
pool->numFree = numBufs;
pool->bufSize = bufSize;
pool->bufAlign = desc->alignment;
pipe_mutex_init(pool->mutex);
pool->buffer = provider->create_buffer(provider, numBufs*bufSize, desc);
if (!pool->buffer)
goto failure;
pool->map = pb_map(pool->buffer,
PB_USAGE_CPU_READ |
PB_USAGE_CPU_WRITE, NULL);
if(!pool->map)
goto failure;
pool->bufs = (struct pool_buffer *)CALLOC(numBufs, sizeof(*pool->bufs));
if (!pool->bufs)
goto failure;
pool_buf = pool->bufs;
for (i = 0; i < numBufs; ++i) {
pipe_reference_init(&pool_buf->base.reference, 0);
pool_buf->base.alignment = 0;
pool_buf->base.usage = 0;
pool_buf->base.size = bufSize;
pool_buf->base.vtbl = &pool_buffer_vtbl;
pool_buf->mgr = pool;
pool_buf->start = i * bufSize;
LIST_ADDTAIL(&pool_buf->head, &pool->free);
pool_buf++;
}
return SUPER(pool);
failure:
FREE(pool->bufs);
if(pool->map)
pb_unmap(pool->buffer);
if(pool->buffer)
pb_reference(&pool->buffer, NULL);
FREE(pool);
return NULL;
}