diff options
Diffstat (limited to 'i965_drv_video/intel_batchbuffer.c')
| -rw-r--r-- | i965_drv_video/intel_batchbuffer.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/i965_drv_video/intel_batchbuffer.c b/i965_drv_video/intel_batchbuffer.c new file mode 100644 index 0000000..46c9496 --- /dev/null +++ b/i965_drv_video/intel_batchbuffer.c @@ -0,0 +1,204 @@ +/************************************************************************** + * + * 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 <string.h> +#include <assert.h> + +#include "va_backend.h" + +#include "intel_batchbuffer.h" + +static void +intel_batchbuffer_reset(struct intel_batchbuffer *batch) +{ + struct intel_driver_data *intel = batch->intel; + + if (batch->buffer != NULL) { + dri_bo_unreference(batch->buffer); + batch->buffer = NULL; + } + + batch->buffer = dri_bo_alloc(intel->bufmgr, "batch buffer", + BATCH_SIZE, 0x1000); + + assert(batch->buffer); + dri_bo_map(batch->buffer, 1); + batch->map = batch->buffer->virtual; + batch->size = BATCH_SIZE; + batch->ptr = batch->map; + batch->atomic = 0; +} + +Bool +intel_batchbuffer_init(struct intel_driver_data *intel) +{ + intel->batch = calloc(1, sizeof(*(intel->batch))); + + assert(intel->batch); + intel->batch->intel = intel; + intel_batchbuffer_reset(intel->batch); + + return True; +} + +Bool +intel_batchbuffer_terminate(struct intel_driver_data *intel) +{ + if (intel->batch) { + if (intel->batch->map) { + dri_bo_unmap(intel->batch->buffer); + intel->batch->map = NULL; + } + + dri_bo_unreference(intel->batch->buffer); + free(intel->batch); + intel->batch = NULL; + } + + return True; +} + +Bool +intel_batchbuffer_flush(VADriverContextP ctx) +{ + struct intel_driver_data *intel = intel_driver_data(ctx); + struct intel_batchbuffer *batch = intel->batch; + unsigned int used = batch->ptr - batch->map; + int is_locked = intel->locked; + + if (used == 0) { + return True; + } + + if ((used & 4) == 0) { + *(unsigned int*)batch->ptr = 0; + batch->ptr += 4; + } + + *(unsigned int*)batch->ptr = MI_BATCH_BUFFER_END; + batch->ptr += 4; + dri_bo_unmap(batch->buffer); + used = batch->ptr - batch->map; + + if (!is_locked) + intel_lock_hardware(ctx); + + dri_bo_exec(batch->buffer, used, 0, 0, 0); + + if (!is_locked) + intel_unlock_hardware(ctx); + + intel_batchbuffer_reset(intel->batch); + + return True; +} + +static unsigned int +intel_batchbuffer_space(struct intel_batchbuffer *batch) +{ + return (batch->size - BATCH_RESERVED) - (batch->ptr - batch->map); +} + +void +intel_batchbuffer_emit_dword(VADriverContextP ctx, unsigned int x) +{ + struct intel_driver_data *intel = intel_driver_data(ctx); + struct intel_batchbuffer *batch = intel->batch; + + assert(intel_batchbuffer_space(batch) >= 4); + *(unsigned int*)batch->ptr = x; + batch->ptr += 4; +} + +void +intel_batchbuffer_emit_reloc(VADriverContextP ctx, dri_bo *bo, + uint32_t read_domains, uint32_t write_domains, + uint32_t delta) +{ + struct intel_driver_data *intel = intel_driver_data(ctx); + struct intel_batchbuffer *batch = intel->batch; + + assert(batch->ptr - batch->map < batch->size); + dri_bo_emit_reloc(batch->buffer, read_domains, write_domains, + delta, batch->ptr - batch->map, bo); + intel_batchbuffer_emit_dword(ctx, bo->offset + delta); +} + +void +intel_batchbuffer_require_space(VADriverContextP ctx, unsigned int size) +{ + struct intel_driver_data *intel = intel_driver_data(ctx); + struct intel_batchbuffer *batch = intel->batch; + + assert(size < batch->size - 8); + + if (intel_batchbuffer_space(batch) < size) { + intel_batchbuffer_flush(ctx); + } +} + +void +intel_batchbuffer_data(VADriverContextP ctx, void *data, unsigned int size) +{ + struct intel_driver_data *intel = intel_driver_data(ctx); + struct intel_batchbuffer *batch = intel->batch; + + assert((size & 3) == 0); + intel_batchbuffer_require_space(ctx, size); + + assert(batch->ptr); + memcpy(batch->ptr, data, size); + batch->ptr += size; +} + +void +intel_batchbuffer_emit_mi_flush(VADriverContextP ctx) +{ + intel_batchbuffer_require_space(ctx, 4); + intel_batchbuffer_emit_dword(ctx, MI_FLUSH | STATE_INSTRUCTION_CACHE_INVALIDATE); +} + +void +intel_batchbuffer_start_atomic(VADriverContextP ctx, unsigned int size) +{ + struct intel_driver_data *intel = intel_driver_data(ctx); + struct intel_batchbuffer *batch = intel->batch; + + assert(!batch->atomic); + intel_batchbuffer_require_space(ctx, size); + batch->atomic = 1; +} + +void +intel_batchbuffer_end_atomic(VADriverContextP ctx) +{ + struct intel_driver_data *intel = intel_driver_data(ctx); + struct intel_batchbuffer *batch = intel->batch; + + assert(batch->atomic); + batch->atomic = 0; +} |