Mesa (master): r600/sb: introduce special register values for lds support.
Dave Airlie
airlied at kemper.freedesktop.org
Thu Jan 18 03:39:44 UTC 2018
Module: Mesa
Branch: master
Commit: 09c1c13c4442148e45a4aeac3425382bbe90e8cd
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=09c1c13c4442148e45a4aeac3425382bbe90e8cd
Author: Dave Airlie <airlied at redhat.com>
Date: Wed Jan 10 03:52:50 2018 +0000
r600/sb: introduce special register values for lds support.
For LDS read/write ordering we use the LDS_RW value, reads
will wait on previous writes.
For LDS read/read from LDS queue ordering we use the LDS_OQ
values, we define two for now, though initially we'll just
support OQA.
Also add the check for the lds oq values
Acked-By: Roland Scheidegger <sroland at vmware.com>
Signed-off-by: Dave Airlie <airlied at redhat.com>
---
src/gallium/drivers/r600/sb/sb_bc.h | 4 ++++
src/gallium/drivers/r600/sb/sb_ir.h | 27 ++++++++++++++++++++++++++-
src/gallium/drivers/r600/sb/sb_valtable.cpp | 3 +++
3 files changed, 33 insertions(+), 1 deletion(-)
diff --git a/src/gallium/drivers/r600/sb/sb_bc.h b/src/gallium/drivers/r600/sb/sb_bc.h
index fc3fa5082d..3a3bae9d44 100644
--- a/src/gallium/drivers/r600/sb/sb_bc.h
+++ b/src/gallium/drivers/r600/sb/sb_bc.h
@@ -722,6 +722,10 @@ public:
return ((sel >= 128 && sel < 192) || (sel >= 256 && sel < 320));
}
+ bool is_lds_oq(unsigned sel) {
+ return (sel >= 0xdb && sel <= 0xde);
+ }
+
const char * get_hw_class_name();
const char * get_hw_chip_name();
diff --git a/src/gallium/drivers/r600/sb/sb_ir.h b/src/gallium/drivers/r600/sb/sb_ir.h
index 2390babfcf..bee947504e 100644
--- a/src/gallium/drivers/r600/sb/sb_ir.h
+++ b/src/gallium/drivers/r600/sb/sb_ir.h
@@ -42,7 +42,10 @@ enum special_regs {
SV_EXEC_MASK,
SV_AR_INDEX,
SV_VALID_MASK,
- SV_GEOMETRY_EMIT
+ SV_GEOMETRY_EMIT,
+ SV_LDS_RW,
+ SV_LDS_OQA,
+ SV_LDS_OQB,
};
class node;
@@ -495,6 +498,12 @@ public:
bool is_geometry_emit() {
return is_special_reg() && select == sel_chan(SV_GEOMETRY_EMIT, 0);
}
+ bool is_lds_access() {
+ return is_special_reg() && select == sel_chan(SV_LDS_RW, 0);
+ }
+ bool is_lds_oq() {
+ return is_special_reg() && (select == sel_chan(SV_LDS_OQA, 0) || select == sel_chan(SV_LDS_OQB, 0));
+ }
node* any_def() {
assert(!(def && adef));
@@ -833,6 +842,22 @@ public:
return vec_uses_ar(dst) || vec_uses_ar(src);
}
+ bool vec_uses_lds_oq(vvec &vv) {
+ for (vvec::iterator I = vv.begin(), E = vv.end(); I != E; ++I) {
+ value *v = *I;
+ if (v && v->is_lds_oq())
+ return true;
+ }
+ return false;
+ }
+
+ bool consumes_lds_oq() {
+ return vec_uses_lds_oq(src);
+ }
+
+ bool produces_lds_oq() {
+ return vec_uses_lds_oq(dst);
+ }
region_node* get_parent_region();
diff --git a/src/gallium/drivers/r600/sb/sb_valtable.cpp b/src/gallium/drivers/r600/sb/sb_valtable.cpp
index a85537c2ad..41cfbf0946 100644
--- a/src/gallium/drivers/r600/sb/sb_valtable.cpp
+++ b/src/gallium/drivers/r600/sb/sb_valtable.cpp
@@ -56,6 +56,9 @@ sb_ostream& operator << (sb_ostream &o, value &v) {
case SV_EXEC_MASK: o << "EM"; break;
case SV_VALID_MASK: o << "VM"; break;
case SV_GEOMETRY_EMIT: o << "GEOMETRY_EMIT"; break;
+ case SV_LDS_RW: o << "LDS_RW"; break;
+ case SV_LDS_OQA: o << "LDS_OQA"; break;
+ case SV_LDS_OQB: o << "LDS_OQB"; break;
default: o << "???specialreg"; break;
}
break;
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