1 files changed, 289 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_batchbuffer.c b/src/mesa/drivers/dri/intel/intel_batchbuffer.c
new file mode 100644
index 0000000000..698445c526
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_batchbuffer.c
@@ -0,0 +1,289 @@
+/**************************************************************************
+ * 
+ * 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 "intel_context.h"
+#include "intel_batchbuffer.h"
+#include "intel_decode.h"
+#include "intel_reg.h"
+#include "intel_bufmgr.h"
+#include "intel_buffers.h"
+
+void
+intel_batchbuffer_reset(struct intel_batchbuffer *batch)
+{
+   struct intel_context *intel = batch->intel;
+
+   if (batch->buf != NULL) {
+      drm_intel_bo_unreference(batch->buf);
+      batch->buf = NULL;
+   }
+
+   batch->buf = drm_intel_bo_alloc(intel->bufmgr, "batchbuffer",
+				   intel->maxBatchSize, 4096);
+   batch->map = batch->buffer;
+   batch->size = intel->maxBatchSize;
+   batch->ptr = batch->map;
+   batch->reserved_space = BATCH_RESERVED;
+   batch->dirty_state = ~0;
+   batch->state_batch_offset = batch->size;
+}
+
+struct intel_batchbuffer *
+intel_batchbuffer_alloc(struct intel_context *intel)
+{
+   struct intel_batchbuffer *batch = calloc(sizeof(*batch), 1);
+
+   batch->intel = intel;
+   batch->buffer = malloc(intel->maxBatchSize);
+   intel_batchbuffer_reset(batch);
+
+   return batch;
+}
+
+void
+intel_batchbuffer_free(struct intel_batchbuffer *batch)
+{
+   free (batch->buffer);
+   drm_intel_bo_unreference(batch->buf);
+   batch->buf = NULL;
+   free(batch);
+}
+
+
+
+/* TODO: Push this whole function into bufmgr.
+ */
+static void
+do_flush_locked(struct intel_batchbuffer *batch, GLuint used)
+{
+   struct intel_context *intel = batch->intel;
+   int ret = 0;
+   int x_off = 0, y_off = 0;
+
+   drm_intel_bo_subdata(batch->buf, 0, used, batch->buffer);
+   if (batch->state_batch_offset != batch->size) {
+      drm_intel_bo_subdata(batch->buf,
+			   batch->state_batch_offset,
+			   batch->size - batch->state_batch_offset,
+			   batch->buffer + batch->state_batch_offset);
+   }
+
+   batch->ptr = NULL;
+
+   if (!intel->no_hw) {
+      drm_intel_bo_exec(batch->buf, used, NULL, 0,
+			(x_off & 0xffff) | (y_off << 16));
+   }
+
+   if (INTEL_DEBUG & DEBUG_BATCH) {
+      drm_intel_bo_map(batch->buf, GL_FALSE);
+      intel_decode(batch->buf->virtual, used / 4, batch->buf->offset,
+		   intel->intelScreen->deviceID);
+      drm_intel_bo_unmap(batch->buf);
+
+      if (intel->vtbl.debug_batch != NULL)
+	 intel->vtbl.debug_batch(intel);
+   }
+
+   if (ret != 0) {
+      exit(1);
+   }
+   intel->vtbl.new_batch(intel);
+}
+
+void
+_intel_batchbuffer_flush(struct intel_batchbuffer *batch, const char *file,
+			 int line)
+{
+   struct intel_context *intel = batch->intel;
+   GLuint used = batch->ptr - batch->map;
+
+   if (intel->first_post_swapbuffers_batch == NULL) {
+      intel->first_post_swapbuffers_batch = intel->batch->buf;
+      drm_intel_bo_reference(intel->first_post_swapbuffers_batch);
+   }
+
+   if (used == 0)
+      return;
+
+   if (INTEL_DEBUG & DEBUG_BATCH)
+      fprintf(stderr, "%s:%d: Batchbuffer flush with %db used\n", file, line,
+	      used);
+
+   batch->reserved_space = 0;
+
+   if (intel->always_flush_cache) {
+      intel_batchbuffer_emit_mi_flush(batch);
+      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;
+   assert (used <= batch->buf->size);
+
+   /* Workaround for recursive batchbuffer flushing: If the window is
+    * moved, we can get into a case where we try to flush during a
+    * flush.  What happens is that when we try to grab the lock for
+    * the first flush, we detect that the window moved which then
+    * causes another flush (from the intel_draw_buffer() call in
+    * intelUpdatePageFlipping()).  To work around this we reset the
+    * batchbuffer tail pointer before trying to get the lock.  This
+    * prevent the nested buffer flush, but a better fix would be to
+    * avoid that in the first place. */
+   batch->ptr = batch->map;
+
+   if (intel->vtbl.finish_batch)
+      intel->vtbl.finish_batch(intel);
+
+   /* Check that we didn't just wrap our batchbuffer at a bad time. */
+   assert(!intel->no_batch_wrap);
+
+   do_flush_locked(batch, used);
+
+   if (INTEL_DEBUG & DEBUG_SYNC) {
+      fprintf(stderr, "waiting for idle\n");
+      drm_intel_bo_map(batch->buf, GL_TRUE);
+      drm_intel_bo_unmap(batch->buf);
+   }
+
+   /* Reset the buffer:
+    */
+   intel_batchbuffer_reset(batch);
+}
+
+
+/*  This is the only way buffers get added to the validate list.
+ */
+GLboolean
+intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
+                             drm_intel_bo *buffer,
+                             uint32_t read_domains, uint32_t write_domain,
+			     uint32_t delta)
+{
+   int ret;
+
+   assert(delta < buffer->size);
+
+   if (batch->ptr - batch->map > batch->buf->size)
+    printf ("bad relocation ptr %p map %p offset %d size %lu\n",
+	    batch->ptr, batch->map, batch->ptr - batch->map, batch->buf->size);
+   ret = drm_intel_bo_emit_reloc(batch->buf, batch->ptr - batch->map,
+				 buffer, delta,
+				 read_domains, write_domain);
+
+   /*
+    * Using the old buffer offset, write in what the right data would be, in case
+    * the buffer doesn't move and we can short-circuit the relocation processing
+    * in the kernel
+    */
+   intel_batchbuffer_emit_dword (batch, buffer->offset + delta);
+
+   return GL_TRUE;
+}
+
+GLboolean
+intel_batchbuffer_emit_reloc_fenced(struct intel_batchbuffer *batch,
+				    drm_intel_bo *buffer,
+				    uint32_t read_domains, uint32_t write_domain,
+				    uint32_t delta)
+{
+   int ret;
+
+   assert(delta < buffer->size);
+
+   if (batch->ptr - batch->map > batch->buf->size)
+    printf ("bad relocation ptr %p map %p offset %d size %lu\n",
+	    batch->ptr, batch->map, batch->ptr - batch->map, batch->buf->size);
+   ret = drm_intel_bo_emit_reloc_fence(batch->buf, batch->ptr - batch->map,
+				       buffer, delta,
+				       read_domains, write_domain);
+
+   /*
+    * Using the old buffer offset, write in what the right data would
+    * be, in case the buffer doesn't move and we can short-circuit the
+    * relocation processing in the kernel
+    */
+   intel_batchbuffer_emit_dword (batch, buffer->offset + delta);
+
+   return GL_TRUE;
+}
+
+void
+intel_batchbuffer_data(struct intel_batchbuffer *batch,
+                       const void *data, GLuint bytes)
+{
+   assert((bytes & 3) == 0);
+   intel_batchbuffer_require_space(batch, bytes);
+   __memcpy(batch->ptr, data, bytes);
+   batch->ptr += bytes;
+}
+
+/* Emit a pipelined flush to either flush render and texture cache for
+ * reading from a FBO-drawn texture, or flush so that frontbuffer
+ * render appears on the screen in DRI1.
+ *
+ * This is also used for the always_flush_cache driconf debug option.
+ */
+void
+intel_batchbuffer_emit_mi_flush(struct intel_batchbuffer *batch)
+{
+   struct intel_context *intel = batch->intel;
+
+   if (intel->gen >= 6) {
+      BEGIN_BATCH(4);
+      OUT_BATCH(_3DSTATE_PIPE_CONTROL);
+      OUT_BATCH(PIPE_CONTROL_INSTRUCTION_FLUSH |
+		PIPE_CONTROL_WRITE_FLUSH |
+		PIPE_CONTROL_NO_WRITE);
+      OUT_BATCH(0); /* write address */
+      OUT_BATCH(0); /* write data */
+      ADVANCE_BATCH();
+   } else if (intel->gen >= 4) {
+      BEGIN_BATCH(4);
+      OUT_BATCH(_3DSTATE_PIPE_CONTROL |
+		PIPE_CONTROL_WRITE_FLUSH |
+		PIPE_CONTROL_NO_WRITE);
+      OUT_BATCH(0); /* write address */
+      OUT_BATCH(0); /* write data */
+      OUT_BATCH(0); /* write data */
+      ADVANCE_BATCH();
+   } else {
+      BEGIN_BATCH(1);
+      OUT_BATCH(MI_FLUSH);
+      ADVANCE_BATCH();
+   }
+}