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([12.186.190.2]) by smtp.gmail.com with ESMTPSA id m2-20020a05620a220200b00777611164c5sm2701263qkh.106.2023.11.14.06.13.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 06:13:44 -0800 (PST) From: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= To: linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Cc: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= , Palmer Dabbelt , Paul Walmsley , Rob Herring , Krzysztof Kozlowski , Albert Ou , Jonathan Corbet , Andrew Jones , Evan Green , Conor Dooley , Samuel Ortiz , Jerry Shih Subject: [PATCH v4 10/20] riscv: hwprobe: export Zfh[min] ISA extensions Date: Tue, 14 Nov 2023 09:12:46 -0500 Message-ID: <20231114141256.126749-11-cleger@rivosinc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231114141256.126749-1-cleger@rivosinc.com> References: <20231114141256.126749-1-cleger@rivosinc.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Export Zfh[min] ISA extensions[1] through hwprobe only if FPU support is available. Link: https://drive.google.com/file/d/1z3tQQLm5ALsAD77PM0l0CHnapxWCeVzP/view [1] Signed-off-by: Clément Léger Reviewed-by: Evan Green --- Documentation/arch/riscv/hwprobe.rst | 6 ++++++ arch/riscv/include/uapi/asm/hwprobe.h | 2 ++ arch/riscv/kernel/sys_riscv.c | 5 +++++ 3 files changed, 13 insertions(+) diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst index a08fcd899b6d..397d53195f49 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst @@ -140,6 +140,12 @@ The following keys are defined: * :c:macro:`RISCV_HWPROBE_EXT_ZVKT`: The Zvkt extension is supported as defined in version 1.0 of the RISC-V Cryptography Extensions Volume II. + * :c:macro:`RISCV_HWPROBE_EXT_ZFH`: The Zfh extension version 1.0 is supported + as defined in the RISC-V ISA manual. + + * :c:macro:`RISCV_HWPROBE_EXT_ZFHMIN`: The Zfhmin extension version 1.0 is + supported as defined in the RISC-V ISA manual. + * :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 89628a76ca04..2d960777ea43 100644 --- a/arch/riscv/include/uapi/asm/hwprobe.h +++ b/arch/riscv/include/uapi/asm/hwprobe.h @@ -50,6 +50,8 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_EXT_ZVKSED (1 << 24) #define RISCV_HWPROBE_EXT_ZVKSH (1 << 25) #define RISCV_HWPROBE_EXT_ZVKT (1 << 26) +#define RISCV_HWPROBE_EXT_ZFH (1 << 27) +#define RISCV_HWPROBE_EXT_ZFHMIN (1 << 28) #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_riscv.c b/arch/riscv/kernel/sys_riscv.c index 9bbcd7334d96..d776c6c39fcd 100644 --- a/arch/riscv/kernel/sys_riscv.c +++ b/arch/riscv/kernel/sys_riscv.c @@ -186,6 +186,11 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair, EXT_KEY(ZVKSH); EXT_KEY(ZVKT); } + + if (has_fpu()) { + EXT_KEY(ZFH); + EXT_KEY(ZFHMIN); + } #undef EXT_KEY } -- 2.42.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A506C4332F for ; Tue, 14 Nov 2023 15:15:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DclTkluSV2/m5719ocUav3LomujOYCuvryYAghUCi4k=; 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