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/**************************************************************************
*
* Copyright 2007 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 "cell_context.h"
#include "cell_batch.h"
#include "cell_spu.h"
void
cell_batch_flush(struct cell_context *cell)
{
const uint batch = cell->cur_batch;
const uint size = cell->batch_buffer_size[batch];
uint i, cmd_word;
if (size == 0)
return;
assert(batch < CELL_NUM_BATCH_BUFFERS);
/*printf("cell_batch_dispatch: buf %u, size %u\n", batch, size);*/
cmd_word = CELL_CMD_BATCH | (batch << 8) | (size << 16);
for (i = 0; i < cell->num_spus; i++) {
send_mbox_message(cell_global.spe_contexts[i], cmd_word);
}
/* XXX wait on DMA xfer of prev buffer to complete */
cell->cur_batch = (batch + 1) % CELL_NUM_BATCH_BUFFERS;
cell->batch_buffer_size[cell->cur_batch] = 0; /* empty */
}
/**
* \param cmd command to append
* \param length command size in bytes
*/
void
cell_batch_append(struct cell_context *cell, const void *cmd, uint length)
{
uint size;
assert(cell->cur_batch >= 0);
size = cell->batch_buffer_size[cell->cur_batch];
if (size + length > CELL_BATCH_BUFFER_SIZE) {
cell_batch_flush(cell);
size = 0;
}
assert(size + length <= CELL_BATCH_BUFFER_SIZE);
memcpy(cell->batch_buffer[cell->cur_batch] + size, cmd, length);
cell->batch_buffer_size[cell->cur_batch] = size + length;
}
void *
cell_batch_alloc(struct cell_context *cell, uint bytes)
{
void *pos;
uint size;
assert(cell->cur_batch >= 0);
size = cell->batch_buffer_size[cell->cur_batch];
if (size + bytes > CELL_BATCH_BUFFER_SIZE) {
cell_batch_flush(cell);
size = 0;
}
assert(size + bytes <= CELL_BATCH_BUFFER_SIZE);
pos = (void *) (cell->batch_buffer[cell->cur_batch] + size);
cell->batch_buffer_size[cell->cur_batch] = size + bytes;
return pos;
}
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