From patchwork Fri May 17 14:52:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= X-Patchwork-Id: 13667115 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 DEC38C04FFE for ; Fri, 17 May 2024 14:54:29 +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=y8FNUzUR6fjJoa0HnP9EGPmNxGUZhqP31Jb3mvmm1vg=; b=pTQqdAlZlc7+/l 8bATa0uZB1UlIm8ljqpQJnh+qhkqp7Abvk42aAQJBWwa5QbQ2aVgIbrKqoodsUsoALM6su4LHmhr1 xcdEL3aFTb69SKiBqNdvAl34OLJ+ksNXpG+bgkaSzJq/PXd1GzuOETk+he+lKodJ2Boy4flOd00MM 0FKGPE68UwVYcDalEgQvtJ7EEmPZdFTkc+O29EMXWCyh8ai449lC75W0KVzZE2ehAwmybynTueqlp jA6kZMPdZ4q8hlCXms91Wck4+yQAVaGEKQjlvrcK9olvwZQA4quEv4IxFGlLsmC9v1pRwbuOWnA2A IfY1AnRTzJ7QR3CdZYlw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s7yyW-0000000892n-1U9O; Fri, 17 May 2024 14:54:24 +0000 Received: from mail-lj1-x22b.google.com ([2a00:1450:4864:20::22b]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s7yxk-000000088AT-0q43 for linux-riscv@lists.infradead.org; Fri, 17 May 2024 14:53:42 +0000 Received: by mail-lj1-x22b.google.com with SMTP id 38308e7fff4ca-2e20088184cso3324221fa.1 for ; Fri, 17 May 2024 07:53:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1715957607; x=1716562407; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=6ZcvU9Yv1rOWLKDlgsJRQ29S24RYbUTnQ4T9H9DZeCs=; b=FX+vnTYnH0CGjETc/DD0BPETHQruIwmxOpnML6gUof5UwjsOYr7tX9TTZ3brc6rUAb V05goPZLJ8kMOrgrZnVPiEOxb2SbCCEaS+/02bM4tpmxdaUg2kVAIlYInCpHDhLtEp0P eaWroGDqfqnZ7nXZmrYGarHl0aBJsP7PmyAOhhSqteS/NhJ0hnvuRk4j7xNXy1cMuge3 ous1u/RlOx0utPN6bG9eZrfQOFIQVyqbto4Dze2eAzEbaL9mnjS6Lvtbdu0mH0iy2oi+ iuG5jrNEMpPPU2VCGUZSMoqVF3TBSZpA0jfpUbyM9CLOzXbDKKu8IWv9iLf2qNFWwl/O W6lg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715957607; x=1716562407; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=6ZcvU9Yv1rOWLKDlgsJRQ29S24RYbUTnQ4T9H9DZeCs=; b=pNFc981irz7znNTfLBrwdXONwR7TApFalC2ciTLppu/NI5tN99oFsADy83KYTNgYX0 Pc5ne6bVbBNIcqjELhaNtP6ql+1R24fKo47mrIa91ZtFWj7PVNEw4L54Tnd2PG6+o4K8 ITH9wo0tNk9Vvqr6ZbmEkvWaZHMv/v4M4Kr1fRZmu/stWZDI/4XxjmBC6NJ5aiRK+Gpz ZnfGVKNgH5bwCqdOeZ652aP/2KGEgoUx+ShfGPq92TiwoPOJPIajJIWtEbthHzGQtM+P 8w0Ty2uuw44IFUEQGHUdWyrKEEK4PeOeH4wMXs2VjPm3N7F2E4hCb3+XkBfFuBnsPMM1 8L6w== X-Forwarded-Encrypted: i=1; AJvYcCVZ+ns4qEMDoIZJqf9AoZPow8WQ4gNccUP0RWSXEOQKAhR+cFWqtGtlstmsCZfkBPbmp5tSzTMibEboxHCbVxokfINIKkgUMCbS1HEYuhYn X-Gm-Message-State: AOJu0YyjhNfdyhz9OH0UqbH0spAUFzJXBahuUPgsVFgifqyYN3pAMRsz 1RkfOfsE/xathN2BD+a6HovWnmCj1VpuWMS6m7uz1KzmUn4+oXVZG7eUWGTeumM= X-Google-Smtp-Source: AGHT+IG0JRKQ4JGhSQKFCaG8K/egrvdoE99BfZAMCAGRo6YHIr6ZDAXQWFJBuUmfJPoMXhQY3Pg2tg== X-Received: by 2002:a2e:a211:0:b0:2e2:714c:23d2 with SMTP id 38308e7fff4ca-2e51fd3125dmr162327021fa.1.1715957607233; Fri, 17 May 2024 07:53:27 -0700 (PDT) Received: from carbon-x1.. ([2a01:e0a:999:a3a0:46f0:3724:aa77:c1f8]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-41fccce9431sm301723695e9.28.2024.05.17.07.53.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 May 2024 07:53:26 -0700 (PDT) From: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= To: Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Anup Patel , Shuah Khan Cc: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= , Atish Patra , 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 v5 09/16] riscv: hwprobe: export Zca, Zcf, Zcd and Zcb ISA extensions Date: Fri, 17 May 2024 16:52:49 +0200 Message-ID: <20240517145302.971019-10-cleger@rivosinc.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240517145302.971019-1-cleger@rivosinc.com> References: <20240517145302.971019-1-cleger@rivosinc.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240517_075336_743889_A4E4CC09 X-CRM114-Status: GOOD ( 10.47 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Export Zca, Zcf, Zcd and Zcb ISA extension through hwprobe. Signed-off-by: Clément Léger Reviewed-by: Charlie Jenkins --- 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 48be38e0b788..cad84f51412d 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst @@ -196,6 +196,26 @@ 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 3b16a12204b1..652b2373729f 100644 --- a/arch/riscv/include/uapi/asm/hwprobe.h +++ b/arch/riscv/include/uapi/asm/hwprobe.h @@ -61,6 +61,10 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_EXT_ZICOND (1ULL << 35) #define RISCV_HWPROBE_EXT_ZIHINTPAUSE (1ULL << 36) #define RISCV_HWPROBE_EXT_ZIMOP (1ULL << 37) +#define RISCV_HWPROBE_EXT_ZCA (1ULL << 38) +#define RISCV_HWPROBE_EXT_ZCB (1ULL << 39) +#define RISCV_HWPROBE_EXT_ZCD (1ULL << 40) +#define RISCV_HWPROBE_EXT_ZCF (1ULL << 41) #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 fc6f4238f0b3..11def345a42d 100644 --- a/arch/riscv/kernel/sys_hwprobe.c +++ b/arch/riscv/kernel/sys_hwprobe.c @@ -113,6 +113,8 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair, EXT_KEY(ZICOND); EXT_KEY(ZIHINTPAUSE); EXT_KEY(ZIMOP); + EXT_KEY(ZCA); + EXT_KEY(ZCB); if (has_vector()) { EXT_KEY(ZVBB); @@ -133,6 +135,8 @@ 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 }