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Diffstat (limited to 'src/gallium/drivers/i965/brw_batchbuffer.c')
-rw-r--r--src/gallium/drivers/i965/brw_batchbuffer.c202
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 00000000000..003b1fd5bf0
--- /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,
+ enum brw_buffer_usage 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;
+}