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/**************************************************************************
*
* 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.
*
**************************************************************************/
#include <inttypes.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "drm.h"
#include "intel_batchbuffer.h"
#include "intel_bufmgr.h"
void
intel_batchbuffer_reset(struct intel_batchbuffer *batch)
{
if (batch->bo != NULL) {
drm_intel_bo_unreference(batch->bo);
batch->bo = NULL;
}
if (!batch->buffer)
batch->buffer = malloc(BATCH_SZ);
batch->bo = drm_intel_bo_alloc(batch->bufmgr, "batchbuffer",
BATCH_SZ, 4096);
batch->map = batch->buffer;
batch->size = BATCH_SZ;
batch->ptr = batch->map;
}
struct intel_batchbuffer *
intel_batchbuffer_alloc(drm_intel_bufmgr *bufmgr)
{
struct intel_batchbuffer *batch = calloc(sizeof(*batch), 1);
batch->bufmgr = bufmgr;
intel_batchbuffer_reset(batch);
return batch;
}
void
intel_batchbuffer_free(struct intel_batchbuffer *batch)
{
free (batch->buffer);
drm_intel_bo_unreference(batch->bo);
batch->bo = NULL;
free(batch);
}
void
intel_batchbuffer_flush(struct intel_batchbuffer *batch)
{
unsigned int used = batch->ptr - batch->map;
int ret;
if (used == 0)
return;
/* Round batchbuffer usage to 2 DWORDs. */
if ((used & 4) == 0) {
*(uint32_t *) (batch->ptr) = 0; /* noop */
batch->ptr += 4;
used = batch->ptr - batch->map;
}
/* Mark the end of the buffer. */
*(uint32_t *) (batch->ptr) = MI_BATCH_BUFFER_END; /* noop */
batch->ptr += 4;
used = batch->ptr - batch->map;
drm_intel_bo_subdata(batch->bo, 0, used, batch->buffer);
batch->map = NULL;
batch->ptr = NULL;
ret = drm_intel_bo_exec(batch->bo, used, NULL, 0, 0);
assert(ret == 0);
intel_batchbuffer_reset(batch);
}
/* This is the only way buffers get added to the validate list.
*/
void
intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
drm_intel_bo *buffer, uint32_t delta,
uint32_t read_domains, uint32_t write_domain)
{
int ret;
if (batch->ptr - batch->map > batch->bo->size)
printf("bad relocation ptr %p map %p offset %d size %ld\n",
batch->ptr, batch->map, batch->ptr - batch->map,
batch->bo->size);
ret = drm_intel_bo_emit_reloc(batch->bo, batch->ptr - batch->map,
buffer, delta,
read_domains, write_domain);
intel_batchbuffer_emit_dword(batch, buffer->offset + delta);
assert(ret == 0);
}
void
intel_batchbuffer_data(struct intel_batchbuffer *batch,
const void *data, unsigned int bytes)
{
assert((bytes & 3) == 0);
intel_batchbuffer_require_space(batch, bytes);
memcpy(batch->ptr, data, bytes);
batch->ptr += bytes;
}
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