| /************************************************************************** |
| * |
| * 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; |
| } |