From nobody Sun Feb 8 21:47:08 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2F91C001B0 for ; Tue, 27 Jun 2023 14:39:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231706AbjF0Ojg (ORCPT ); Tue, 27 Jun 2023 10:39:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231542AbjF0Oi7 (ORCPT ); Tue, 27 Jun 2023 10:38:59 -0400 Received: from mail-wm1-x32c.google.com (mail-wm1-x32c.google.com [IPv6:2a00:1450:4864:20::32c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B85B935A6 for ; Tue, 27 Jun 2023 07:38:28 -0700 (PDT) Received: by mail-wm1-x32c.google.com with SMTP id 5b1f17b1804b1-3f9bdb01ec0so55289025e9.2 for ; Tue, 27 Jun 2023 07:38:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20221208.gappssmtp.com; s=20221208; t=1687876704; x=1690468704; 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=WHx3gYl8Iw0W58X86iiLjYiqWHDrUKQgdW58J9hMNFo=; b=FTtFb9NUP/FASOPS8uXn1Ce/tmrUwlVuNX2PR/86vGMwUod6PgNIRCWP1uks54i4F9 Pds5XWsywwWck3JhyC7zwYuKbYWBMfHYS7NhW/0MxwH43Z0rMp3SZBfMINhwqXsRt4L6 BWZmF2mpKAqelz1kMm0/Yj8eR4jfqKpL8uwKGeoRP5lR2L5B5PGvVb2gjqs/RMdgaK/d /sT1/2lEtasaKEJFEFOhWdgkU8Rp/mrpkfYXUUqBEPQ5cMOyet5zVpa5fnfkbIEnEycp lZCJkbMpt+mAYj8wvVyGSxpqwxMFwfWu5ihjRrR/qR8Jvq0F/W9OCbTmCKmjyg8oAnRg rkzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687876704; x=1690468704; 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=WHx3gYl8Iw0W58X86iiLjYiqWHDrUKQgdW58J9hMNFo=; b=d88kbnNHnGXTPvETc8YNlImYXJ/F/ZrP0I3ZyFZw8bguGzQ2kzrhSDPZ1aBxjfX/Mx DB59GqSNwMe+O/uxljS7wZ2c/A5zQhrTddcbJLT+sPIEn9fnMdNPv5pi8yWf6ThJ9t7w Ib6fwf459glSE4vXnQs2DxUwYDIVhymIgorX+jZP/KtrgQJCJur1sbQvcuODDmAoS+F+ gTuOz9mmly5009YjgMwQcVhFjKzFwmD13Mst3IEmS+vHfgQUyTJpN0FLUJJ9mWpwab6+ WUgUhsK/6IfWlotBVABzw0C9wr4vuOzfDnJLQb5e8vDa3U5ZwbQ68oguYkFmWzLIa+b/ YNfw== X-Gm-Message-State: AC+VfDwVKnINtjyP5loxU0vTlLVddC3vWm4LPST1PZJL75pqtvL5ag8I 5Llui7pXL+me996wQ3dFucahNA== X-Google-Smtp-Source: ACHHUZ4nqjMHBfhSsc2aV/a4aCgpIz8HXNz9mgF/6ym4aPv0kI9lcEjphKs7zOHhm0vLztzwNlDDTA== X-Received: by 2002:a7b:cd1a:0:b0:3fb:7184:53eb with SMTP id f26-20020a7bcd1a000000b003fb718453ebmr2396351wmj.18.1687876704481; Tue, 27 Jun 2023 07:38:24 -0700 (PDT) Received: from vermeer.tail79c99.ts.net ([2a01:cb1d:81a9:dd00:b570:b34c:ffd4:c805]) by smtp.gmail.com with ESMTPSA id c21-20020a7bc855000000b003f8fac0ad4bsm10894793wml.17.2023.06.27.07.38.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Jun 2023 07:38:24 -0700 (PDT) From: Samuel Ortiz To: Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-riscv@lists.infradead.org Cc: Samuel Ortiz , linux@rivosinc.com, Conor Dooley , Andrew Jones , Heiko Stuebner , Anup Patel , linux-kernel@vger.kernel.org, "Hongren (Zenithal) Zheng" , Guo Ren , Atish Patra , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Evan Green Subject: [PATCH 2/3] RISC-V: hwprobe: Expose Zbc and the scalar crypto extensions Date: Tue, 27 Jun 2023 16:37:43 +0200 Message-ID: <20230627143747.1599218-3-sameo@rivosinc.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230627143747.1599218-1-sameo@rivosinc.com> References: <20230627143747.1599218-1-sameo@rivosinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Zbc was missing from a previous Bit-Manipulation extension hwprobe patch. Add all scalar crypto extensions bits, and define a macro for setting the hwprobe key/pair in a more readable way. Signed-off-by: Samuel Ortiz Reviewed-by: Evan Green --- Documentation/riscv/hwprobe.rst | 33 ++++++++++++++++++++++++ arch/riscv/include/uapi/asm/hwprobe.h | 11 ++++++++ arch/riscv/kernel/sys_riscv.c | 36 ++++++++++++++++----------- 3 files changed, 66 insertions(+), 14 deletions(-) diff --git a/Documentation/riscv/hwprobe.rst b/Documentation/riscv/hwprobe.= rst index 19165ebd82ba..3177550106e0 100644 --- a/Documentation/riscv/hwprobe.rst +++ b/Documentation/riscv/hwprobe.rst @@ -72,11 +72,44 @@ The following keys are defined: extensions. =20 * :c:macro:`RISCV_HWPROBE_EXT_ZBB`: The Zbb extension is supported, as d= efined + in version 1.0 of the Bit-Manipulation ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZBC`: The Zbc extension is supported, as d= efined in version 1.0 of the Bit-Manipulation ISA extensions. =20 * :c:macro:`RISCV_HWPROBE_EXT_ZBS`: The Zbs extension is supported, as d= efined in version 1.0 of the Bit-Manipulation ISA extensions. =20 + * :c:macro:`RISCV_HWPROBE_EXT_ZBKB`: The Zbkb extension is supported, as= defined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZBKC`: The Zbkc extension is supported, as= defined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZBKX`: The Zbkx extension is supported, as= defined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZKND`: The Zknd extension is supported, as= defined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZKNE`: The Zkne extension is supported, as= defined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZKNH`: The Zknh extension is supported, as= defined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZKR`: The Zkr extension is supported, as d= efined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZKSED`: The Zksed extension is supported, = as defined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZKSH`: The Zksh extension is supported, as= defined + in version 1.0 of the Scalar Cryptography ISA extensions. + + * :c:macro:`RISCV_HWPROBE_EXT_ZKT`: The Zkt extension is supported, as d= efined + in version 1.0 of the Scalar Cryptography ISA extensions. + * :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: A bitmask that contains performa= nce information about the selected set of processors. =20 diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uap= i/asm/hwprobe.h index 006bfb48343d..8357052061b3 100644 --- a/arch/riscv/include/uapi/asm/hwprobe.h +++ b/arch/riscv/include/uapi/asm/hwprobe.h @@ -29,6 +29,17 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_EXT_ZBA (1 << 3) #define RISCV_HWPROBE_EXT_ZBB (1 << 4) #define RISCV_HWPROBE_EXT_ZBS (1 << 5) +#define RISCV_HWPROBE_EXT_ZBC (1 << 6) +#define RISCV_HWPROBE_EXT_ZBKB (1 << 7) +#define RISCV_HWPROBE_EXT_ZBKC (1 << 8) +#define RISCV_HWPROBE_EXT_ZBKX (1 << 9) +#define RISCV_HWPROBE_EXT_ZKND (1 << 10) +#define RISCV_HWPROBE_EXT_ZKNE (1 << 11) +#define RISCV_HWPROBE_EXT_ZKNH (1 << 12) +#define RISCV_HWPROBE_EXT_ZKR (1 << 13) +#define RISCV_HWPROBE_EXT_ZKSED (1 << 14) +#define RISCV_HWPROBE_EXT_ZKSH (1 << 15) +#define RISCV_HWPROBE_EXT_ZKT (1 << 16) #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 26ef5526bfb4..df15926196b6 100644 --- a/arch/riscv/kernel/sys_riscv.c +++ b/arch/riscv/kernel/sys_riscv.c @@ -145,20 +145,28 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pa= ir, for_each_cpu(cpu, cpus) { struct riscv_isainfo *isainfo =3D &hart_isa[cpu]; =20 - if (riscv_isa_extension_available(isainfo->isa, ZBA)) - pair->value |=3D RISCV_HWPROBE_EXT_ZBA; - else - missing |=3D RISCV_HWPROBE_EXT_ZBA; - - if (riscv_isa_extension_available(isainfo->isa, ZBB)) - pair->value |=3D RISCV_HWPROBE_EXT_ZBB; - else - missing |=3D RISCV_HWPROBE_EXT_ZBB; - - if (riscv_isa_extension_available(isainfo->isa, ZBS)) - pair->value |=3D RISCV_HWPROBE_EXT_ZBS; - else - missing |=3D RISCV_HWPROBE_EXT_ZBS; +#define SET_HWPROBE_EXT_PAIR(ext) \ + do { \ + if (riscv_isa_extension_available(isainfo->isa, ext)) \ + pair->value |=3D RISCV_HWPROBE_EXT_## ext; \ + else \ + missing |=3D RISCV_HWPROBE_EXT_## ext; \ + } while (false) \ + + SET_HWPROBE_EXT_PAIR(ZBA); + SET_HWPROBE_EXT_PAIR(ZBB); + SET_HWPROBE_EXT_PAIR(ZBC); + SET_HWPROBE_EXT_PAIR(ZBS); + SET_HWPROBE_EXT_PAIR(ZBKB); + SET_HWPROBE_EXT_PAIR(ZBKC); + SET_HWPROBE_EXT_PAIR(ZBKX); + SET_HWPROBE_EXT_PAIR(ZKND); + SET_HWPROBE_EXT_PAIR(ZKNE); + SET_HWPROBE_EXT_PAIR(ZKNH); + SET_HWPROBE_EXT_PAIR(ZKR); + SET_HWPROBE_EXT_PAIR(ZKSED); + SET_HWPROBE_EXT_PAIR(ZKSH); + SET_HWPROBE_EXT_PAIR(ZKT); } =20 /* Now turn off reporting features if any CPU is missing it. */ --=20 2.41.0