diff --git a/assembler/gram.y b/assembler/gram.y
index bc0e1e6a..425d27be 100644
--- a/assembler/gram.y
+++ b/assembler/gram.y
@@ -72,6 +72,7 @@
 %token NOP
 
 %token MSGLEN RETURNLEN
+%token <integer> ALLOCATE USED COMPLETE TRANSPOSE INTERLEAVE
 %token SATURATE
 
 %token <integer> INTEGER
@@ -90,6 +91,7 @@
 %type <integer> conditionalmodifier saturate negate abs
 %type <integer> regtype srcimmtype execsize dstregion
 %type <integer> subregnum sampler_datatype
+%type <integer> urb_swizzle urb_allocate urb_used urb_complete
 %type <region> region
 %type <direct_gen_reg> directgenreg directmsgreg addrreg accreg flagreg maskreg
 %type <direct_gen_reg> nullreg
@@ -289,9 +291,16 @@ msgtarget:	NULL_TOKEN
 		  $$.bits3.dp_write.msg_type = $7;
 		  $$.bits3.dp_write.send_commit_msg = $9;
 		}
-		| URB
+		| URB INTEGER urb_swizzle urb_allocate urb_used urb_complete
 		{
 		  $$.bits3.generic.msg_target = BRW_MESSAGE_TARGET_URB;
+		  $$.bits3.urb.opcode = BRW_URB_OPCODE_WRITE;
+		  $$.bits3.urb.offset = $2;
+		  $$.bits3.urb.swizzle_control = $3;
+		  $$.bits3.urb.pad = 0;
+		  $$.bits3.urb.allocate = $4;
+		  $$.bits3.urb.used = $5;
+		  $$.bits3.urb.complete = $6;
 		}
 		| THREAD_SPAWNER
 		{
@@ -300,6 +309,19 @@ msgtarget:	NULL_TOKEN
 		}
 ;
 
+urb_allocate:	ALLOCATE { $$ = 1; }
+		| /* empty */ { $$ = 0; }
+
+urb_used:	USED { $$ = 1; }
+		| /* empty */ { $$ = 0; }
+
+urb_complete:	COMPLETE { $$ = 1; }
+		| /* empty */ { $$ = 0; }
+
+urb_swizzle:	TRANSPOSE { $$ = BRW_URB_SWIZZLE_TRANSPOSE; }
+		| INTERLEAVE { $$ = BRW_URB_SWIZZLE_INTERLEAVE; }
+		| /* empty */ { $$ = BRW_URB_SWIZZLE_NONE; }
+
 sampler_datatype:
 		TYPE_F
 		| TYPE_UD
diff --git a/assembler/lex.l b/assembler/lex.l
index 1e58b6ac..6bca52dd 100644
--- a/assembler/lex.l
+++ b/assembler/lex.l
@@ -55,6 +55,12 @@ int saved_state = INITIAL;
 "urb" { return URB; }
 "thread_spawner" { return THREAD_SPAWNER; }
 
+"allocate" { return ALLOCATE; }
+"used" { return USED; }
+"complete" { return COMPLETE; }
+"transpose" { return TRANSPOSE; }
+"interleave" { return INTERLEAVE; }
+
 ";" { return SEMICOLON; }
 "(" { return LPAREN; }
 ")" { return RPAREN; }
diff --git a/assembler/packed_yuv_sf.g4a b/assembler/packed_yuv_sf.g4a
index 436d9e8e..1b2d84fd 100644
--- a/assembler/packed_yuv_sf.g4a
+++ b/assembler/packed_yuv_sf.g4a
@@ -6,7 +6,7 @@ mul (1) g7.4<1>F g7.4<0,1,0>F g6.4<0,1,0>F { align1 };
 mov (8) m1<1>F g7<0,1,0>F { align1 };
 mov (8) m2<1>F g7.4<0,1,0>F { align1 };
 mov (8) m3<1>F g3<8,8,1>F { align1 };
-send (8) 0 null g0<8,8,1>F urb mlen 4 rlen 0 write +0 transpose used complete EOT{ align1 };
+send (8) 0 null g0<8,8,1>F urb 0 transpose used complete mlen 4 rlen 0 { align1 EOT };
 nop;
 nop;
 nop;