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([2a01:e0a:999:a3a0:9134:b302:d8b:a200]) by smtp.gmail.com with ESMTPSA id a4-20020a05600c224400b003fe2b081661sm18945715wmm.30.2023.10.11.04.19.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Oct 2023 04:19:24 -0700 (PDT) From: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= To: linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Cc: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= , Palmer Dabbelt , Paul Walmsley , Rob Herring , Krzysztof Kozlowski , Albert Ou , Jonathan Corbet , Andrew Jones , Evan Green , Conor Dooley Subject: [PATCH v1 11/13] riscv: add ISA extension probing for Zvfh[min] Date: Wed, 11 Oct 2023 13:14:36 +0200 Message-ID: <20231011111438.909552-12-cleger@rivosinc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231011111438.909552-1-cleger@rivosinc.com> References: <20231011111438.909552-1-cleger@rivosinc.com> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Wed, 11 Oct 2023 04:20:37 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1779457839874870912 X-GMAIL-MSGID: 1779457839874870912 Add probing for Zvfh[min] ISA extension[1] which were ratified in june 2023 around commit e2ccd0548d6c ("Remove draft warnings from Zvfh[min]") in riscv-v-spec[2]. [1] https://drive.google.com/file/d/1_Yt60HGAf1r1hx7JnsIptw0sqkBd9BQ8/view [2] https://github.com/riscv/riscv-v-spec/commits/e2ccd0548d6c Signed-off-by: Clément Léger --- arch/riscv/include/asm/hwcap.h | 2 ++ arch/riscv/kernel/cpufeature.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index 1f09b8b3da2a..ea141cfb8f9c 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -77,6 +77,8 @@ #define RISCV_ISA_EXT_ZFH 59 #define RISCV_ISA_EXT_ZFHMIN 60 #define RISCV_ISA_EXT_ZIHINTNTL 61 +#define RISCV_ISA_EXT_ZVFH 62 +#define RISCV_ISA_EXT_ZVFHMIN 63 #define RISCV_ISA_EXT_MAX 64 diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 136e90263ba2..f17b9aca5fba 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -179,6 +179,8 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = { __RISCV_ISA_EXT_DATA(zbs, RISCV_ISA_EXT_ZBS), __RISCV_ISA_EXT_DATA(zvbb, RISCV_ISA_EXT_ZVBB), __RISCV_ISA_EXT_DATA(zvbc, RISCV_ISA_EXT_ZVBC), + __RISCV_ISA_EXT_DATA(zvfh, RISCV_ISA_EXT_ZVFH), + __RISCV_ISA_EXT_DATA(zvfhmin, RISCV_ISA_EXT_ZVFHMIN), __RISCV_ISA_EXT_DATA(zvkb, RISCV_ISA_EXT_ZVKB), __RISCV_ISA_EXT_DATA(zvkg, RISCV_ISA_EXT_ZVKG), __RISCV_ISA_EXT_DATA(zvkn, RISCV_ISA_EXT_ZVKN),