From patchwork Tue Oct 3 03:52:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 13406714 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 523B0E776FD for ; Tue, 3 Oct 2023 03:52:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230084AbjJCDw7 (ORCPT ); Mon, 2 Oct 2023 23:52:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239028AbjJCDwz (ORCPT ); Mon, 2 Oct 2023 23:52:55 -0400 Received: from mail-pl1-x62c.google.com (mail-pl1-x62c.google.com [IPv6:2607:f8b0:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 519B1E5 for ; Mon, 2 Oct 2023 20:52:51 -0700 (PDT) Received: by mail-pl1-x62c.google.com with SMTP id d9443c01a7336-1c1e3a4a06fso3471255ad.3 for ; Mon, 02 Oct 2023 20:52:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1696305170; x=1696909970; darn=vger.kernel.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=yycPMI9rC/acogS1vs0h8BRUvc4a6Kod+MRuzLqJ/0g=; b=eYod/e1R9rPAN+Lcj0so8LwAml04Wl/WzcFrIfCgC81dpEoK7EcH5aHxlKTX95tJxP mHIYp7ajloshl6RkNrEWp8HdYDoNolaS1bzGcOmkEfKQ65rsKDB+iiDgIN/TxBl6mvXX HvUyMyzIpI08lAO1nFzzHTVR3U+wfR0UtT91zT0LjPutA73nn8uHnc6Ced+ZTKyUbWiY bC9MasG0uW+u/3aG5OGaGTRVpbDG68m1ZyiLbAllgJGF9a91iUkKY8RhQetRk00RzuP0 4MQml9OBOeYoeo6KO14UwkfYKVYuFqM4wcZO6KsvuXdCsfGJigCb9BIX29CI/ZG2fGA0 eiFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696305170; x=1696909970; 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=yycPMI9rC/acogS1vs0h8BRUvc4a6Kod+MRuzLqJ/0g=; b=btF0haGg2gWARvkpFcOMHcVCqvyyi0u/L+1HykEphN0W6XGUcFVZUWcrRPn+VU17+Y TEN00Qt+CFoTdtbq3THuXfAZo6BiJ42EE4EDoKCcwrRtTiKm/oQfZgQ7kbUMzhX6KyeL ik/5PZ4lB4GfhAu97erKG+9+lhiJEhKIysMT7gf/B8Sub8c0Xz2gl1k8pa088lCuHFSi JDLV2IO5MtQj8zzDWWLBLDOXoFn0vwiBBo4RL43m122Qtzbn3ucCtQsEtfXs7EEkynb+ XhwavDyjM9h1IdiJcwG0vHDCxAKi8xHIwSKQm8bkddFRj5Vl5BaUS0k/wEkAo1HMGj4k O2xA== X-Gm-Message-State: AOJu0Yz0qGUPMa3K6VuXxNnd70vHZcPfEHq8M2NwXbQS7ETANkOqqzIj M4mXwaeUEj7Xse1PfVscMYedDw== X-Google-Smtp-Source: AGHT+IFTxF070rx7YJkcoy2/BdnPUrtJEvwz7nDRRqveimSHvcZ4nNWjTlHA1gEQmD/xbZ6UMOx4KQ== X-Received: by 2002:a17:902:f7d1:b0:1bc:10cf:50d8 with SMTP id h17-20020a170902f7d100b001bc10cf50d8mr10607315plw.23.1696305170384; Mon, 02 Oct 2023 20:52:50 -0700 (PDT) Received: from anup-ubuntu-vm.localdomain ([171.76.84.132]) by smtp.gmail.com with ESMTPSA id ja7-20020a170902efc700b001bf846dd2d0sm277381plb.13.2023.10.02.20.52.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Oct 2023 20:52:49 -0700 (PDT) From: Anup Patel To: Paolo Bonzini , Atish Patra , Palmer Dabbelt , Paul Walmsley , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Shuah Khan Cc: Andrew Jones , Mayuresh Chitale , devicetree@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Anup Patel , Conor Dooley Subject: [PATCH v3 2/6] RISC-V: Detect Zicond from ISA string Date: Tue, 3 Oct 2023 09:22:22 +0530 Message-Id: <20231003035226.1945725-3-apatel@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231003035226.1945725-1-apatel@ventanamicro.com> References: <20231003035226.1945725-1-apatel@ventanamicro.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The RISC-V integer conditional (Zicond) operation extension defines standard conditional arithmetic and conditional-select/move operations which are inspired from the XVentanaCondOps extension. In fact, QEMU RISC-V also has support for emulating Zicond extension. Let us detect Zicond extension from ISA string available through DT or ACPI. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones Reviewed-by: Conor Dooley Acked-by: Palmer Dabbelt --- arch/riscv/include/asm/hwcap.h | 1 + arch/riscv/kernel/cpufeature.c | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index 0f520f7d058a..6fc51c1b34cf 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -59,6 +59,7 @@ #define RISCV_ISA_EXT_ZIFENCEI 41 #define RISCV_ISA_EXT_ZIHPM 42 #define RISCV_ISA_EXT_SMSTATEEN 43 +#define RISCV_ISA_EXT_ZICOND 44 #define RISCV_ISA_EXT_MAX 64 diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 3755a8c2a9de..e3803822ab5a 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -167,6 +167,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = { __RISCV_ISA_EXT_DATA(zicbom, RISCV_ISA_EXT_ZICBOM), __RISCV_ISA_EXT_DATA(zicboz, RISCV_ISA_EXT_ZICBOZ), __RISCV_ISA_EXT_DATA(zicntr, RISCV_ISA_EXT_ZICNTR), + __RISCV_ISA_EXT_DATA(zicond, RISCV_ISA_EXT_ZICOND), __RISCV_ISA_EXT_DATA(zicsr, RISCV_ISA_EXT_ZICSR), __RISCV_ISA_EXT_DATA(zifencei, RISCV_ISA_EXT_ZIFENCEI), __RISCV_ISA_EXT_DATA(zihintpause, RISCV_ISA_EXT_ZIHINTPAUSE),