This will be used to implement the Gateway Barrier SEND needed to implement
the barrier function.
Signed-off-by: Jordan Justen <jordan.l.jus...@intel.com>
Reviewed-by: Chris Forbes <chr...@ijw.co.nz>
---
src/mesa/drivers/dri/i965/brw_eu.h | 3 +++
src/mesa/drivers/dri/i965/brw_eu_emit.c | 31 +++++++++++++++++++++++++++++++
2 files changed, 34 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_eu.h
b/src/mesa/drivers/dri/i965/brw_eu.h
index 5e86591..6ef8dbf 100644
--- a/src/mesa/drivers/dri/i965/brw_eu.h
+++ b/src/mesa/drivers/dri/i965/brw_eu.h
@@ -360,6 +360,9 @@ brw_jump_scale(const struct brw_context *brw)
return 1;
}
+void brw_barrier(struct brw_compile *p,
+ struct brw_reg src);
+
void brw_wait(struct brw_compile *p);
/* If/else/endif. Works by manipulating the execution flags on each
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c
b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index d9572b5..d27e2c6 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -2953,6 +2953,37 @@ void brw_shader_time_add(struct brw_compile *p,
/**
+ * Emit the SEND message for a barrier
+ */
+void
+brw_barrier(struct brw_compile *p,
+ struct brw_reg src)
+{
+ struct brw_context *brw = p->brw;
+ struct brw_inst *inst;
+
+ assert(brw->gen >= 7);
+
+ inst = next_insn(p, BRW_OPCODE_SEND);
+ brw_set_dest(p, inst, brw_null_reg());
+ brw_set_src0(p, inst, src);
+ brw_set_src1(p, inst, brw_null_reg());
+
+ brw_set_message_descriptor(p, inst, BRW_SFID_MESSAGE_GATEWAY,
+ 1 /* msg_length */,
+ 0 /* response_length */,
+ false /* header_present */,
+ false /* end_of_thread */);
+
+ brw_inst_set_notify(brw, inst, 1);
+ brw_inst_set_gateway_subfuncid(brw, inst,
+ BRW_MESSAGE_GATEWAY_SFID_BARRIER_MSG);
+
+ brw_inst_set_mask_control(brw, inst, BRW_MASK_DISABLE);
+}
+
+
+/**
* Emit the wait instruction for a barrier
*/
void
--
2.1.4
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