Basic facility for playing back captured aubfiles. Requires a small

hack to the drm to disable command verification on the cmd_buffer
ioctl.  Doesn't exactly replay as commands are normally delivered as
batchbuffers but are captured and replayed as commands on the ring.

1 files changed, 161 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_aub_playback.c b/src/mesa/drivers/dri/i965/brw_aub_playback.c
new file mode 100644
index 0000000000..73743daa60
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_aub_playback.c
@@ -0,0 +1,161 @@
+
+#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include "brw_aub.h"
+#include "brw_context.h"
+#include "intel_ioctl.h"
+#include "bufmgr.h"
+
+struct aub_state {
+   struct intel_context *intel;
+   const char *map;
+   unsigned int csr;
+   unsigned int sz;
+};
+
+
+static int gobble( struct aub_state *s, int size )
+{
+   if (s->csr + size > s->sz) {
+      DBG("EOF in %s\n", __FUNCTION__);
+      return 1;
+   }
+
+   s->csr += size;
+   return 0;
+}
+
+/* In order to work, the memory layout has to be the same as the X
+ * server which created the aubfile.
+ */
+static int parse_block_header( struct aub_state *s )
+{
+   struct aub_block_header *bh = (struct aub_block_header *)(s->map + s->csr);
+   void *data = (void *)(bh + 1);
+   unsigned int len = (bh->length + 3) & ~3;
+
+   DBG("block header at 0x%x\n", s->csr);
+
+   if (s->csr + len + sizeof(*bh) > s->sz) {
+      DBG("EOF in data in %s\n", __FUNCTION__);
+      return 1;
+   }
+
+   if (bh->address_space == ADDR_GTT) {
+
+      switch (bh->operation)
+      {
+      case BH_DATA_WRITE: {
+	 void *dest = bmFindVirtual( s->intel, bh->address, len );
+	 if (dest == NULL) {
+	    _mesa_printf("Couldn't find virtual address for offset %x\n", bh->address);
+	    return 1;
+	 }
+
+	 /* Just copy the data to the indicated place in agp memory:
+	  */
+	 memcpy(dest, data, len);
+	 break;
+      }
+      case BH_COMMAND_WRITE:
+	 /* For ring data, just send off immediately via an ioctl.
+	  * This differs slightly from how the stream was executed
+	  * initially as this would have been a batchbuffer.
+	  */
+	 intel_cmd_ioctl(s->intel, data, len, GL_TRUE);
+	 break;
+      default:
+	 break;
+      }
+   }
+
+   s->csr += sizeof(*bh) + len;
+   return 0;
+}
+
+
+#define AUB_FILE_HEADER 0xe085000b
+#define AUB_BLOCK_HEADER 0xe0c10003
+#define AUB_DUMP_BMP 0xe09e0004
+
+int brw_playback_aubfile(struct brw_context *brw,
+			 const char *filename)
+{
+   struct intel_context *intel = &brw->intel;
+   struct aub_state state;
+   struct stat sb;
+   int fd;
+   int retval = 0;
+
+   state.intel = intel;
+
+   fd = open(filename, O_RDONLY, 0);
+   if (fd < 0) {
+      DBG("couldn't open aubfile: %s\n", filename);
+      return 1;
+   }
+
+   if (fstat(fd, &sb) != 0) {
+      DBG("couldn't open %s\n", filename);
+      return 1;
+   }
+
+   state.csr = 0;
+   state.sz = sb.st_size;
+   state.map = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+   
+   if (state.map == NULL) {
+      DBG("couldn't mmap %s\n", filename);
+      return 1;
+   }
+
+   LOCK_HARDWARE(intel); 
+   {
+      /* Make sure we don't confuse anything that might happen to be
+       * going on with the hardware:
+       */
+/*       bmEvictAll(intel); */
+/*       intel->vtbl.lost_hardware(intel); */
+      
+
+      /* Replay the aubfile item by item: 
+       */
+      while (retval == 0 && 
+	     state.csr != state.sz) {
+	 unsigned int insn = *(unsigned int *)(state.map + state.csr);
+
+	 switch (insn) {
+	 case AUB_FILE_HEADER:
+	    retval = gobble(&state, sizeof(struct aub_file_header));
+	    break;
+	 
+	 case AUB_BLOCK_HEADER:   
+	    retval = parse_block_header(&state);
+	    break;
+	 
+	 case AUB_DUMP_BMP:
+	    retval = gobble(&state, sizeof(struct aub_dump_bmp));
+	    break;
+	 
+	 default:
+	    DBG("unknown instruction %x\n", insn);
+	    retval = 1;
+	    break;
+	 }
+      }
+   }
+   UNLOCK_HARDWARE(intel);
+   return retval;
+}
+
+
+
+
+
+
+