Bobby Bruce has submitted this change. (
https://gem5-review.googlesource.com/c/public/gem5/+/70733?usp=email )
(
7 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the
submitted one.
)Change subject: arch-arm: Declare support for Armv8.2-I8MM.
..
arch-arm: Declare support for Armv8.2-I8MM.
Sets the appropriate bit in the ID_AA64ZFR0_EL1 sysreg that declares
support for ARMv8.2-I8MM.
This indicates that all pre-requisites for Armv8.2 SVE Int8 matrix
multiplication instructions have been met.
SMMLA, SUDOT, UMMLA, USMMLA, and USDOT instructions are implemented.
For more information please refer to the "ARM Architecture Reference
Manual Supplement - The Scalable Vector Extension (SVE), for ARMv8-A"
(https://developer.arm.com/architectures/cpu-architecture/a-profile/
docs/arm-architecture-reference-manual-supplement-armv8-a)
Additional Contributors: Giacomo Travaglini
Change-Id: Id97e1c5de8c23a25336a6b323034e9eca8e598e4
Reviewed-by: Richard Cooper
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/70733
Maintainer: Giacomo Travaglini
Reviewed-by: Andreas Sandberg
Tested-by: kokoro
Reviewed-by: Giacomo Travaglini
Maintainer: Andreas Sandberg
---
M src/arch/arm/ArmISA.py
M src/arch/arm/ArmSystem.py
M src/arch/arm/process.cc
M src/arch/arm/regs/misc.cc
4 files changed, 6 insertions(+), 0 deletions(-)
Approvals:
Andreas Sandberg: Looks good to me, approved; Looks good to me, approved
Giacomo Travaglini: Looks good to me, approved; Looks good to me, approved
kokoro: Regressions pass
diff --git a/src/arch/arm/ArmISA.py b/src/arch/arm/ArmISA.py
index fbd93b6..ffe63eb 100644
--- a/src/arch/arm/ArmISA.py
+++ b/src/arch/arm/ArmISA.py
@@ -56,6 +56,7 @@
"FEAT_F32MM",
"FEAT_F64MM",
"FEAT_SVE",
+"FEAT_I8MM",
# Armv8.3
"FEAT_FCMA",
"FEAT_JSCVT",
diff --git a/src/arch/arm/ArmSystem.py b/src/arch/arm/ArmSystem.py
index 49dab3e..c5c0f43 100644
--- a/src/arch/arm/ArmSystem.py
+++ b/src/arch/arm/ArmSystem.py
@@ -80,6 +80,7 @@
"FEAT_LPA", # Optional in Armv8.2
"FEAT_F32MM", # Optional in Armv8.2
"FEAT_F64MM", # Optional in Armv8.2
+"FEAT_I8MM", # Optional in Armv8.2
# Armv8.3
"FEAT_FCMA",
"FEAT_JSCVT",
@@ -167,6 +168,7 @@
"FEAT_SVE",
"FEAT_F32MM",
"FEAT_F64MM",
+"FEAT_I8MM",
# Armv8.3
"FEAT_FCMA",
"FEAT_JSCVT",
@@ -202,6 +204,7 @@
"FEAT_SVE",
"FEAT_F32MM",
"FEAT_F64MM",
+"FEAT_I8MM",
]
diff --git a/src/arch/arm/process.cc b/src/arch/arm/process.cc
index be8dfff..b63567b 100644
--- a/src/arch/arm/process.cc
+++ b/src/arch/arm/process.cc
@@ -323,6 +323,7 @@
const AA64ZFR0 zf_r0 = tc->readMiscReg(MISCREG_ID_AA64ZFR0_EL1);
hwcap |= (zf_r0.f32mm >= 1) ? Arm_Svef32mm : Arm_None;
hwcap |= (zf_r0.f64mm >= 1) ? Arm_Svef64mm : Arm_None;
+hwcap |= (zf_r0.i8mm >= 1) ? Arm_Svei8mm : Arm_None;
return hwcap;
}
diff --git a/src/arch/arm/regs/misc.cc b/src/arch/arm/regs/misc.cc
index 7e53e0d..b978044 100644
--- a/src/arch/arm/regs/misc.cc
+++ b/src/arch/arm/regs/misc.cc
@@ -5407,6 +5407,7 @@
AA64ZFR0 zfr0_el1 = 0;
zfr0_el1.f32mm = release->has(ArmExtension::FEAT_F32MM) ? 1 :
0;
zfr0_el1.f64mm = release->has(ArmExtension::FEAT_F64MM) ? 1 :
0;
+zfr0_el1.i8mm = release->has(ArmExtension::FEAT_I8MM) ? 1 : 0;
return zfr0_el1;
}())
.faultRead(EL0, faultIdst)
--
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Gerrit-MessageType: merged
Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: Id97e1c5de8c23a25336a6b323034e9eca8e598e4
Gerrit-Change-Number: 70733
Gerrit-PatchSet: 9
Gerrit-Owner: Giacomo Travaglini
Gerrit-Reviewer: Andreas Sandberg
Gerrit-Reviewer: Bobby Bruce
Gerrit-Reviewer: Giacomo Travaglini
Gerrit-Reviewer: Jason Lowe-Power
Gerrit-Reviewer: kokoro
Gerrit-CC: Richard Cooper
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