diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_batchbuffer.c')
-rw-r--r-- | src/gallium/drivers/i965/brw_batchbuffer.c | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_batchbuffer.c b/src/gallium/drivers/i965/brw_batchbuffer.c new file mode 100644 index 0000000000..22607dc608 --- /dev/null +++ b/src/gallium/drivers/i965/brw_batchbuffer.c @@ -0,0 +1,202 @@ +/************************************************************************** + * + * 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 "brw_batchbuffer.h" +#include "brw_reg.h" +#include "brw_winsys.h" +#include "brw_debug.h" +#include "brw_structs.h" + +#define ALWAYS_EMIT_MI_FLUSH 1 + +enum pipe_error +brw_batchbuffer_reset(struct brw_batchbuffer *batch) +{ + enum pipe_error ret; + + ret = batch->sws->bo_alloc( batch->sws, + BRW_BUFFER_TYPE_BATCH, + BRW_BATCH_SIZE, 4096, + &batch->buf ); + if (ret) + return ret; + + batch->size = BRW_BATCH_SIZE; + + /* With map_range semantics, the winsys can decide whether to + * inject a malloc'ed bounce buffer instead of mapping directly. + */ + batch->map = batch->sws->bo_map(batch->buf, + BRW_DATA_BATCH_BUFFER, + 0, batch->size, + GL_TRUE, + GL_TRUE, + GL_TRUE); + + batch->ptr = batch->map; + return PIPE_OK; +} + +struct brw_batchbuffer * +brw_batchbuffer_alloc(struct brw_winsys_screen *sws, + struct brw_chipset chipset) +{ + struct brw_batchbuffer *batch = CALLOC_STRUCT(brw_batchbuffer); + + batch->sws = sws; + batch->chipset = chipset; + brw_batchbuffer_reset(batch); + + return batch; +} + +void +brw_batchbuffer_free(struct brw_batchbuffer *batch) +{ + if (batch->map) { + batch->sws->bo_unmap(batch->buf); + batch->map = NULL; + } + + bo_reference(&batch->buf, NULL); + 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 | 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; + + batch->sws->bo_flush_range(batch->buf, 0, used); + batch->sws->bo_unmap(batch->buf); + batch->map = NULL; + batch->ptr = NULL; + + batch->sws->bo_exec(batch->buf, used ); + + 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_wait_idle(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; + + /* bo_emit_reloc was resposible for writing a zero into the + * batchbuffer if necessary. Just need to update our pointer. + */ + batch->ptr += 4; + + 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; +} |