From: "Clément Léger" <cleger@rivosinc.com>
To: Jonathan Corbet <corbet@lwn.net>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Conor Dooley <conor@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Anup Patel <anup@brainfault.org>, Shuah Khan <shuah@kernel.org>
Cc: "Clément Léger" <cleger@rivosinc.com>,
"Atish Patra" <atishp@atishpatra.org>,
linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-kselftest@vger.kernel.org
Subject: [PATCH v2 05/12] riscv: hwprobe: export Zca, Zcf, Zcd and Zcb ISA extensions
Date: Thu, 18 Apr 2024 14:42:28 +0200 [thread overview]
Message-ID: <20240418124300.1387978-6-cleger@rivosinc.com> (raw)
In-Reply-To: <20240418124300.1387978-1-cleger@rivosinc.com>
Export Zca, Zcf, Zcd and Zcb ISA extension through hwprobe.
Signed-off-by: Clément Léger <cleger@rivosinc.com>
---
Documentation/arch/riscv/hwprobe.rst | 20 ++++++++++++++++++++
arch/riscv/include/uapi/asm/hwprobe.h | 4 ++++
arch/riscv/kernel/sys_hwprobe.c | 4 ++++
3 files changed, 28 insertions(+)
diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index 9ca5b093b6d5..bf96b4e8ba3b 100644
--- a/Documentation/arch/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -192,6 +192,26 @@ The following keys are defined:
supported as defined in the RISC-V ISA manual starting from commit
58220614a5f ("Zimop is ratified/1.0").
+ * :c:macro:`RISCV_HWPROBE_EXT_ZCA`: The Zca extension part of Zc* standard
+ extensions for code size reduction, as ratified in commit 8be3419c1c0
+ ("Zcf doesn't exist on RV64 as it contains no instructions") of
+ riscv-code-size-reduction.
+
+ * :c:macro:`RISCV_HWPROBE_EXT_ZCB`: The Zcb extension part of Zc* standard
+ extensions for code size reduction, as ratified in commit 8be3419c1c0
+ ("Zcf doesn't exist on RV64 as it contains no instructions") of
+ riscv-code-size-reduction.
+
+ * :c:macro:`RISCV_HWPROBE_EXT_ZCD`: The Zcd extension part of Zc* standard
+ extensions for code size reduction, as ratified in commit 8be3419c1c0
+ ("Zcf doesn't exist on RV64 as it contains no instructions") of
+ riscv-code-size-reduction.
+
+ * :c:macro:`RISCV_HWPROBE_EXT_ZCF`: The Zcf extension part of Zc* standard
+ extensions for code size reduction, as ratified in commit 8be3419c1c0
+ ("Zcf doesn't exist on RV64 as it contains no instructions") of
+ riscv-code-size-reduction.
+
* :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: A bitmask that contains performance
information about the selected set of processors.
diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uapi/asm/hwprobe.h
index ac6874ab743a..dd4ad77faf49 100644
--- a/arch/riscv/include/uapi/asm/hwprobe.h
+++ b/arch/riscv/include/uapi/asm/hwprobe.h
@@ -60,6 +60,10 @@ struct riscv_hwprobe {
#define RISCV_HWPROBE_EXT_ZACAS (1ULL << 34)
#define RISCV_HWPROBE_EXT_ZICOND (1ULL << 35)
#define RISCV_HWPROBE_EXT_ZIMOP (1ULL << 36)
+#define RISCV_HWPROBE_EXT_ZCA (1ULL << 37)
+#define RISCV_HWPROBE_EXT_ZCB (1ULL << 38)
+#define RISCV_HWPROBE_EXT_ZCD (1ULL << 39)
+#define RISCV_HWPROBE_EXT_ZCF (1ULL << 40)
#define RISCV_HWPROBE_KEY_CPUPERF_0 5
#define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
#define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0)
diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprobe.c
index c99a4cf231c5..2ffa0fe5101e 100644
--- a/arch/riscv/kernel/sys_hwprobe.c
+++ b/arch/riscv/kernel/sys_hwprobe.c
@@ -112,6 +112,8 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair,
EXT_KEY(ZACAS);
EXT_KEY(ZICOND);
EXT_KEY(ZIMOP);
+ EXT_KEY(ZCA);
+ EXT_KEY(ZCB);
if (has_vector()) {
EXT_KEY(ZVBB);
@@ -132,6 +134,8 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair,
EXT_KEY(ZFH);
EXT_KEY(ZFHMIN);
EXT_KEY(ZFA);
+ EXT_KEY(ZCD);
+ EXT_KEY(ZCF);
}
#undef EXT_KEY
}
--
2.43.0
next prev parent reply other threads:[~2024-04-18 12:44 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-18 12:42 [PATCH v2 00/12] Add support for a few Zc* extensions as well as Zcmop Clément Léger
2024-04-18 12:42 ` [PATCH v2 01/12] dt-bindings: riscv: add Zca, Zcf, Zcd and Zcb ISA extension description Clément Léger
2024-04-19 15:24 ` Conor Dooley
2024-04-18 12:42 ` [PATCH v2 02/12] riscv: dts: enable Zc* extensions when needed Clément Léger
2024-04-19 15:55 ` Conor Dooley
2024-04-18 12:42 ` [PATCH v2 03/12] dt-bindings: riscv: add Zc* extension rules implied by C extension Clément Léger
2024-04-19 15:49 ` Conor Dooley
2024-04-22 8:53 ` Clément Léger
2024-04-22 11:19 ` Conor Dooley
2024-04-22 11:40 ` Clément Léger
2024-04-18 12:42 ` [PATCH v2 04/12] riscv: add ISA parsing for Zca, Zcf, Zcd and Zcb Clément Léger
2024-04-19 15:51 ` Conor Dooley
2024-04-22 8:53 ` Clément Léger
2024-04-22 9:35 ` Conor Dooley
2024-04-22 11:14 ` Clément Léger
2024-04-22 11:36 ` Conor Dooley
2024-04-22 11:41 ` Clément Léger
2024-04-18 12:42 ` Clément Léger [this message]
2024-04-18 12:42 ` [PATCH v2 06/12] RISC-V: KVM: Allow Zca, Zcf, Zcd and Zcb extensions for Guest/VM Clément Léger
2024-04-18 13:20 ` Anup Patel
2024-04-18 12:42 ` [PATCH v2 07/12] KVM: riscv: selftests: Add some Zc* extensions to get-reg-list test Clément Léger
2024-04-18 13:20 ` Anup Patel
2024-04-18 12:42 ` [PATCH v2 08/12] dt-bindings: riscv: add Zcmop ISA extension description Clément Léger
2024-04-19 15:50 ` Conor Dooley
2024-04-18 12:42 ` [PATCH v2 09/12] riscv: add ISA extension parsing for Zcmop Clément Léger
2024-04-18 12:42 ` [PATCH v2 10/12] riscv: hwprobe: export Zcmop ISA extension Clément Léger
2024-04-18 12:42 ` [PATCH v2 11/12] RISC-V: KVM: Allow Zcmop extension for Guest/VM Clément Léger
2024-04-18 13:21 ` Anup Patel
2024-04-18 12:42 ` [PATCH v2 12/12] KVM: riscv: selftests: Add Zcmop extension to get-reg-list test Clément Léger
2024-04-18 13:21 ` Anup Patel
2024-04-18 13:28 ` [PATCH v2 00/12] Add support for a few Zc* extensions as well as Zcmop Anup Patel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240418124300.1387978-6-cleger@rivosinc.com \
--to=cleger@rivosinc.com \
--cc=anup@brainfault.org \
--cc=aou@eecs.berkeley.edu \
--cc=atishp@atishpatra.org \
--cc=conor@kernel.org \
--cc=corbet@lwn.net \
--cc=devicetree@vger.kernel.org \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=kvm-riscv@lists.infradead.org \
--cc=kvm@vger.kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=robh@kernel.org \
--cc=shuah@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).