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-rw-r--r--src/mesa/drivers/dri/i965/brw_eu.h16
-rw-r--r--src/mesa/drivers/dri/i965/brw_eu_emit.c14
2 files changed, 30 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_eu.h b/src/mesa/drivers/dri/i965/brw_eu.h
index a6fcd832f7d..3a0100024cf 100644
--- a/src/mesa/drivers/dri/i965/brw_eu.h
+++ b/src/mesa/drivers/dri/i965/brw_eu.h
@@ -520,6 +520,20 @@ static INLINE struct brw_reg brw_acc_reg( void )
0);
}
+static INLINE struct brw_reg brw_notification_1_reg(void)
+{
+
+ return brw_reg(BRW_ARCHITECTURE_REGISTER_FILE,
+ BRW_ARF_NOTIFICATION_COUNT,
+ 1,
+ BRW_REGISTER_TYPE_UD,
+ BRW_VERTICAL_STRIDE_0,
+ BRW_WIDTH_1,
+ BRW_HORIZONTAL_STRIDE_0,
+ BRW_SWIZZLE_XXXX,
+ WRITEMASK_X);
+}
+
static INLINE struct brw_reg brw_flag_reg( void )
{
@@ -919,6 +933,8 @@ void brw_land_fwd_jump(struct brw_compile *p,
void brw_NOP(struct brw_compile *p);
+void brw_WAIT(struct brw_compile *p);
+
/* Special case: there is never a destination, execution size will be
* taken from src0:
*/
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index 34dfe10cb93..10e9ebc3b0e 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -906,6 +906,20 @@ void brw_CMP(struct brw_compile *p,
}
}
+/* Issue 'wait' instruction for n1, host could program MMIO
+ to wake up thread. */
+void brw_WAIT (struct brw_compile *p)
+{
+ struct brw_instruction *insn = next_insn(p, BRW_OPCODE_WAIT);
+ struct brw_reg src = brw_notification_1_reg();
+
+ brw_set_dest(insn, src);
+ brw_set_src0(insn, src);
+ brw_set_src1(insn, brw_null_reg());
+ insn->header.execution_size = 0; /* must */
+ insn->header.predicate_control = 0;
+ insn->header.compression_control = 0;
+}
/***********************************************************************