/* internal (non-inline) part of etna_reserve
* - commit current command buffer (if there is a current command buffer)
* - signify when current command buffer becomes available using a signal
* - switch to next command buffer
*/
int _etna_reserve_internal(struct etna_ctx *ctx, size_t n)
{
int status;
#ifdef DEBUG
fprintf(stderr, "Buffer full\n");
#endif
if((ctx->offset*4 + END_COMMIT_CLEARANCE) > COMMAND_BUFFER_SIZE)
{
fprintf(stderr, "%s: Command buffer overflow! This is likely a programming error in the GPU driver.\n", __func__);
abort();
}
#ifdef GCABI_HAS_CONTEXT
if(ctx->cur_buf == ETNA_CTX_BUFFER)
{
fprintf(stderr, "%s: Context buffer overflow! This is likely a programming error in the GPU driver.\n", __func__);
abort();
}
#endif
if(ctx->cur_buf != ETNA_NO_BUFFER)
{
#if 0
fprintf(stderr, "Submitting old buffer %i\n", ctx->cur_buf);
#endif
/* Queue signal to signify when buffer is available again */
if((status = etna_queue_signal(ctx->queue, ctx->cmdbufi[ctx->cur_buf].sig_id, VIV_WHERE_COMMAND)) != ETNA_OK)
{
fprintf(stderr, "%s: queue signal for old buffer failed: %i\n", __func__, status);
abort(); /* buffer is in invalid state XXX need some kind of recovery */
}
/* Otherwise, if there is something to be committed left in the current command buffer, commit it */
if((status = etna_flush(ctx, NULL)) != ETNA_OK)
{
fprintf(stderr, "%s: reserve failed: %i\n", __func__, status);
abort(); /* buffer is in invalid state XXX need some kind of recovery */
}
}
/* Move on to next buffer if not enough free in current one */
if((status = switch_next_buffer(ctx)) != ETNA_OK)
{
fprintf(stderr, "%s: can't switch to next command buffer: %i\n", __func__, status);
abort(); /* Buffer is in invalid state XXX need some kind of recovery.
This could involve waiting and re-uploading the context state. */
}
return status;
}
/* internal (non-inline) part of etna_reserve
* - commit current command buffer (if there is a current command buffer)
* - signify when current command buffer becomes available using a signal
* - switch to next command buffer
*/
int _etna_reserve_internal(etna_ctx *ctx, size_t n)
{
int status;
#ifdef DEBUG
printf("Buffer full\n");
#endif
if(ctx->cur_buf != -1)
{
/* Otherwise, if there is something to be committed left in the current command buffer, commit it */
if((status = etna_flush(ctx)) != ETNA_OK)
return status;
/* Queue signal to signify when buffer is available again */
if(viv_event_queue_signal(ctx->cmdbuf_sig[ctx->cur_buf], gcvKERNEL_COMMAND) != 0)
return ETNA_INTERNAL_ERROR;
}
/* Move on to next buffer if not enough free in current one */
status = switch_next_buffer(ctx);
return status;
}
