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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 "util/u_memory.h"
#include "pipe/p_error.h"
#include "brw_batchbuffer.h"
//#include "brw_decode.h"
#include "brw_reg.h"
#include "brw_winsys.h"
#include "brw_debug.h"
#include "brw_structs.h"
#define USE_MALLOC_BUFFER 1
#define ALWAYS_EMIT_MI_FLUSH 1
void
brw_batchbuffer_reset(struct brw_batchbuffer *batch)
{
if (batch->buf) {
batch->sws->bo_unreference(batch->buf);
batch->buf = NULL;
}
if (batch->use_malloc_buffer && !batch->malloc_buffer)
batch->malloc_buffer = MALLOC(BRW_BATCH_SIZE);
batch->buf = batch->sws->bo_alloc(batch->sws,
BRW_BUFFER_TYPE_BATCH,
BRW_BATCH_SIZE, 4096);
if (batch->malloc_buffer)
batch->map = batch->malloc_buffer;
else
batch->map = batch->sws->bo_map(batch->buf, GL_TRUE);
batch->size = BRW_BATCH_SIZE;
batch->ptr = batch->map;
}
struct brw_batchbuffer *
brw_batchbuffer_alloc(struct brw_winsys_screen *sws)
{
struct brw_batchbuffer *batch = CALLOC_STRUCT(brw_batchbuffer);
batch->use_malloc_buffer = USE_MALLOC_BUFFER;
batch->sws = sws;
brw_batchbuffer_reset(batch);
return batch;
}
void
brw_batchbuffer_free(struct brw_batchbuffer *batch)
{
if (batch->malloc_buffer) {
FREE(batch->malloc_buffer);
batch->map = NULL;
}
else if (batch->map) {
batch->sws->bo_unmap(batch->buf);
batch->map = NULL;
}
batch->sws->bo_unreference(batch->buf);
FREE(batch);
}
void
_brw_batchbuffer_flush(struct brw_batchbuffer *batch,
const char *file,
int line)
{
GLuint used = batch->ptr - batch->map;
if (used == 0)
return;
/* Post-swap throttling done by the state tracker.
*/
if (BRW_DEBUG & DEBUG_BATCH)
debug_printf("%s:%d: Batchbuffer flush with %db used\n",
file, line, used);
if (ALWAYS_EMIT_MI_FLUSH) {
*(GLuint *) (batch->ptr) = ((MI_FLUSH << 16) | BRW_FLUSH_STATE_CACHE);
batch->ptr += 4;
used = batch->ptr - batch->map;
}
/* Round batchbuffer usage to 2 DWORDs.
*/
if ((used & 4) == 0) {
*(GLuint *) (batch->ptr) = 0; /* noop */
batch->ptr += 4;
used = batch->ptr - batch->map;
}
/* Mark the end of the buffer.
*/
*(GLuint *) (batch->ptr) = MI_BATCH_BUFFER_END;
batch->ptr += 4;
used = batch->ptr - batch->map;
if (batch->use_malloc_buffer) {
batch->sws->bo_subdata(batch->buf, 0, used, batch->map );
batch->map = NULL;
}
else {
batch->sws->bo_unmap(batch->buf);
batch->map = NULL;
}
batch->ptr = NULL;
batch->sws->bo_exec(batch->buf, used );
#if 0
if (BRW_DEBUG & DEBUG_BATCH) {
void *ptr = batch->sws->bo_map(batch->buf, GL_FALSE);
intel_decode(ptr,
used / 4,
batch->buf->offset,
batch->chipset.pci_id);
batch->sws->bo_unmap(batch->buf);
}
#endif
if (BRW_DEBUG & DEBUG_SYNC) {
/* Abuse map/unmap to achieve wait-for-fence.
*
* XXX: hide this inside the winsys and export a fence
* interface.
*/
debug_printf("waiting for idle\n");
batch->sws->bo_map(batch->buf, GL_TRUE);
batch->sws->bo_unmap(batch->buf);
}
/* Reset the buffer:
*/
brw_batchbuffer_reset(batch);
}
/* The OUT_RELOC() macro ends up here, generating a relocation within
* the batch buffer.
*/
enum pipe_error
brw_batchbuffer_emit_reloc(struct brw_batchbuffer *batch,
struct brw_winsys_buffer *buffer,
uint32_t usage,
uint32_t delta)
{
int ret;
if (batch->ptr - batch->map > batch->buf->size) {
debug_printf("bad relocation ptr %p map %p offset %d size %d\n",
batch->ptr, batch->map, batch->ptr - batch->map, batch->buf->size);
return PIPE_ERROR_OUT_OF_MEMORY;
}
ret = batch->sws->bo_emit_reloc(batch->buf,
usage,
delta,
batch->ptr - batch->map,
buffer);
if (ret != 0)
return ret;
/*
* Using the old buffer offset, write in what the right data would be, in case
* the buffer doesn't move and we can short-circuit the relocation processing
* in the kernel
*/
brw_batchbuffer_emit_dword (batch, buffer->offset[0] + delta);
return 0;
}
enum pipe_error
brw_batchbuffer_data(struct brw_batchbuffer *batch,
const void *data, GLuint bytes,
enum cliprect_mode cliprect_mode)
{
enum pipe_error ret;
assert((bytes & 3) == 0);
ret = brw_batchbuffer_require_space(batch, bytes);
if (ret)
return ret;
memcpy(batch->ptr, data, bytes);
batch->ptr += bytes;
return 0;
}
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