On Sat, Mar 14, 2015 at 9:54 PM, Jordan Justen <jordan.l.jus...@intel.com> wrote: > From: Paul Berry <stereotype...@gmail.com> > > This message must be sent to the "thread spawner" unit. > > Reviewed-by: Jordan Justen <jordan.l.jus...@intel.com>
Reviewed-by: Kristian Høgsberg <k...@bitplanet.net> > --- > src/mesa/drivers/dri/i965/brw_eu.h | 4 +++ > src/mesa/drivers/dri/i965/brw_eu_emit.c | 46 > +++++++++++++++++++++++++++++++++ > 2 files changed, 50 insertions(+) > > diff --git a/src/mesa/drivers/dri/i965/brw_eu.h > b/src/mesa/drivers/dri/i965/brw_eu.h > index d9ad5bd..708c216 100644 > --- a/src/mesa/drivers/dri/i965/brw_eu.h > +++ b/src/mesa/drivers/dri/i965/brw_eu.h > @@ -349,6 +349,10 @@ brw_jump_scale(const struct brw_context *brw) > return 1; > } > > +void brw_cs_terminate(struct brw_compile *p, > + unsigned msg_reg_nr, > + struct brw_reg src0); > + > /* 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 43e5783..9c166a3 100644 > --- a/src/mesa/drivers/dri/i965/brw_eu_emit.c > +++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c > @@ -2895,3 +2895,49 @@ void brw_shader_time_add(struct brw_compile *p, > 0 /* response length */, > false /* header present */); > } > + > + > +static void > +brw_set_cs_terminate_message(struct brw_context *brw, > + struct brw_compile *p, > + struct brw_inst *insn) > +{ > + /* Terminate a compute shader by sending a message to the thread spawner. > + * Note that even though the thread has a URB resource associated with it, > + * we set the "do not dereference URB" bit, because the URB resource is > + * managed by the fixed-function unit, so it will free it automatically. > + */ > + brw_set_message_descriptor(p, insn, BRW_SFID_THREAD_SPAWNER, > + 1 /* msg_length */, > + 0 /* response_length */, > + false /* header_present */, > + true /* end_of_thread */); > + brw_inst_set_ts_opcode(brw, insn, 0); /* Dereference resource */ > + brw_inst_set_ts_request_type(brw, insn, 0); /* Root thread */ > + brw_inst_set_ts_resource_select(brw, insn, 1); /* Do not dereference URB > */ > +} > + > + > +/** > + * Emit the SEND message to terminate a compute shader. > + */ > +void > +brw_cs_terminate(struct brw_compile *p, > + unsigned msg_reg_nr, > + struct brw_reg src0) > +{ > + struct brw_context *brw = p->brw; > + struct brw_inst *insn; > + > + gen6_resolve_implied_move(p, &src0, msg_reg_nr); > + insn = next_insn(p, BRW_OPCODE_SEND); > + brw_set_dest(p, insn, brw_null_reg()); > + brw_set_src0(p, insn, src0); > + brw_set_src1(p, insn, brw_imm_d(0)); > + > + if (brw->gen < 6) > + brw_inst_set_cond_modifier(brw, insn, msg_reg_nr); > + > + brw_set_cs_terminate_message(brw, p, insn); > + brw_inst_set_mask_control(brw, insn, BRW_MASK_DISABLE); > +} > -- > 2.1.4 > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev