diff options
| author | Jordan Justen <[email protected]> | 2014-11-04 18:11:37 -0800 |
|---|---|---|
| committer | Jordan Justen <[email protected]> | 2015-06-12 15:12:40 -0700 |
| commit | 7953c000731ec1310fdbb5d8a13720fe0cdbf6f4 (patch) | |
| tree | 7a65fdeddc87b5e3f37ad93b959653630902fc0a | |
| parent | 0d250cc210f971f566bbe5b1e54cf3cd114537e9 (diff) | |
i965: Add brw_barrier to emit a Gateway Barrier SEND
This will be used to implement the Gateway Barrier SEND needed to implement
the barrier function.
v2:
* notify => gateway_notify (Ken)
* combine short lines of brw_barrier proto/decl (mattst88)
Signed-off-by: Jordan Justen <[email protected]>
Reviewed-by: Chris Forbes <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_eu.h | 2 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_eu_emit.c | 30 |
2 files changed, 32 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_eu.h b/src/mesa/drivers/dri/i965/brw_eu.h index 0eaab2f1d1f..761aa0ec5fa 100644 --- a/src/mesa/drivers/dri/i965/brw_eu.h +++ b/src/mesa/drivers/dri/i965/brw_eu.h @@ -361,6 +361,8 @@ brw_jump_scale(const struct brw_device_info *devinfo) return 1; } +void brw_barrier(struct brw_codegen *p, struct brw_reg src); + /* If/else/endif. Works by manipulating the execution flags on each * channel. */ diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c index 61fc1abf897..0f536046f6f 100644 --- a/src/mesa/drivers/dri/i965/brw_eu_emit.c +++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c @@ -3409,6 +3409,36 @@ void brw_shader_time_add(struct brw_codegen *p, /** + * Emit the SEND message for a barrier + */ +void +brw_barrier(struct brw_codegen *p, struct brw_reg src) +{ + const struct brw_device_info *devinfo = p->devinfo; + struct brw_inst *inst; + + assert(devinfo->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_gateway_notify(devinfo, inst, 1); + brw_inst_set_gateway_subfuncid(devinfo, inst, + BRW_MESSAGE_GATEWAY_SFID_BARRIER_MSG); + + brw_inst_set_mask_control(devinfo, inst, BRW_MASK_DISABLE); +} + + +/** * Emit the wait instruction for a barrier */ void |