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Message-ID: <20231017131456.2053396-18-cleger@rivosinc.com>
Date: Tue, 17 Oct 2023 15:14:54 +0200
From: Clément Léger <cleger@...osinc.com>
To: linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Cc: Clément Léger <cleger@...osinc.com>,
Palmer Dabbelt <palmer@...osinc.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Albert Ou <aou@...s.berkeley.edu>,
Jonathan Corbet <corbet@....net>,
Andrew Jones <ajones@...tanamicro.com>,
Evan Green <evan@...osinc.com>,
Conor Dooley <conor@...nel.org>,
Samuel Ortiz <sameo@...osinc.com>
Subject: [PATCH v2 17/19] riscv: add ISA extension parsing for Zfa
Add parsing for Zfa ISA extension [1] which were ratified in commit
056b6ff467c7 ("Zfa is ratified") of riscv-isa-manual[2].
Link: https://drive.google.com/file/d/1VT6QIggpb59-8QRV266dEE4T8FZTxGq4/view [1]
Link: https://github.com/riscv/riscv-isa-manual/commits/056b6ff467c7 [2]
Signed-off-by: Clément Léger <cleger@...osinc.com>
---
arch/riscv/include/asm/hwcap.h | 1 +
arch/riscv/kernel/cpufeature.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index d9fb782f198d..8f324c646a73 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -84,6 +84,7 @@
#define RISCV_ISA_EXT_ZIHINTNTL 66
#define RISCV_ISA_EXT_ZVFH 67
#define RISCV_ISA_EXT_ZVFHMIN 68
+#define RISCV_ISA_EXT_ZFA 69
#define RISCV_ISA_EXT_MAX 128
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index c70885f5014b..296cc0025734 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -245,6 +245,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
__RISCV_ISA_EXT_DATA(zihintntl, RISCV_ISA_EXT_ZIHINTNTL),
__RISCV_ISA_EXT_DATA(zihintpause, RISCV_ISA_EXT_ZIHINTPAUSE),
__RISCV_ISA_EXT_DATA(zihpm, RISCV_ISA_EXT_ZIHPM),
+ __RISCV_ISA_EXT_DATA(zfa, RISCV_ISA_EXT_ZFA),
__RISCV_ISA_EXT_DATA(zfh, RISCV_ISA_EXT_ZFH),
__RISCV_ISA_EXT_DATA(zfhmin, RISCV_ISA_EXT_ZFHMIN),
__RISCV_ISA_EXT_DATA(zba, RISCV_ISA_EXT_ZBA),
--
2.42.0
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