From patchwork Mon Feb 10 21:35:34 2025 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: 13969386 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 37DADC02198 for ; Mon, 10 Feb 2025 23:55:57 +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=68479llWz/ULtnvqtYiZBF2/0Dbc4coXL1/kwZVM0dk=; b=rRvLUvxDQIJNdB cUzFmeN1e6JH5eufwuSnA4Qv5EMnMuRgsY4wlZfLgn6668WueNij0qNbEnJFHTk2OI31pJs97Vh9L rp3oOa6mEnbxfktfDqAQOq3B/VQCokke9ozh1TIbyVjJVyMA7xxz6CAM51vOJxZlR3pFbsDjLi5ZM 6oK1++k3tMv8dtJ07l31HEOKORG34mnc4gFq5nKG6uykYlFWJ+CWCh9DSNxWVpOlgM/BlkZoZrSk5 fdpqZiO1sa8dlsNHcQfKvbzG6Jz86IqKYekBwmXvPG7pxUGSZ+u+GTgdKCrmujX1WTLYc7Wjo/ewV T/ZpOFuPIt3Be8t4bF6A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1thdd1-00000001u3n-1ED7; Mon, 10 Feb 2025 23:55:51 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1thbS2-00000001VU6-2uiW for linux-riscv@bombadil.infradead.org; Mon, 10 Feb 2025 21:36:22 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:Content-Type :MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Sender:Reply-To:Content-ID:Content-Description; bh=dNygMxZnETinUIbqht3HdG0xEf8Y/zFmGWQC8EBuXhA=; b=d8bSWsjkMx4HasbwFId/h6NI1Z noQtzwo985I13L3ptEGYI3st64uJpPBHAZToFuT1KNiCluNcZQmu9CqNXCpV7oE/nEYvR9rWVU9Wn sSC0X7C9o5aZeDDdtdD06LiuhBAPbOUP8mcWSxD7MGuA611DrekjvhgWtsCfvY34puCRqChTdDp9g 2pRyj6lFLSL2bPOiY4ARn3M8roT9uqkvZz60TacyV2oSpyZ1c8WBwe5ckUOhV4KjWrA4XKEV+HaWz ghpZ9lXv2A4lzxB72ntQ1PmxcGefUF6p3+9InqDornfOXAVXHWdlMm0Bhcv5+/byMKZlhKfieZc+6 u3Swb27Q==; Received: from mail-wm1-x330.google.com ([2a00:1450:4864:20::330]) by desiato.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1thbRp-00000000I9K-1LFT for linux-riscv@lists.infradead.org; Mon, 10 Feb 2025 21:36:17 +0000 Received: by mail-wm1-x330.google.com with SMTP id 5b1f17b1804b1-4361f664af5so54351495e9.1 for ; Mon, 10 Feb 2025 13:36:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1739223364; x=1739828164; 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=dNygMxZnETinUIbqht3HdG0xEf8Y/zFmGWQC8EBuXhA=; b=IKzwSNkzflXv1EL7YKqdeNvHbC/w2i9dq0AgSnqg9jV5uS8wK84zd496p6P1/EbZJK bhO0j/2V72t7qwlQMGPiLuRxJ3bG5X1VsCyxPgQhP6sgLLrAcPQQy5wNZuoXV4Slf4gi 1liVDgVMTiVDew61N0PKfTEXwBXwi1RZEGAbH8VE0ZT+hVLg0Oq5itawIr2NAN7gxiAy kDQSRYRl5b300OWvmLCLg9ajrJIlw9/+kWunPbYu2z9d//Qzgo8etIa6KOyWWz7WqGQS jCeLsZnihuDLQXPWaxqfhjp0YAu4Nj8lFvt7lCH0RNA3Tc3gD0IJHCAwZiaMkUC7GIgE BbIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1739223364; x=1739828164; 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=dNygMxZnETinUIbqht3HdG0xEf8Y/zFmGWQC8EBuXhA=; b=WEY/xqgLdE2YFIdy+Y3DqPEotxKoxxapncoQXs4IsAPCd0A3J+O4M4uXADm5LidkKa W0AXhatpivglqBs1szY4TvQ8BecfyPe3ShH/+aSErXv3vxpeVxmvEjYv5uW9YC+MNUPF QDreIS6S0mJO1YJj3iGv6h+Tdvs0oCoMBsO0e6vCOjdl4fi9XASBtfMydzIqXHBCLnAQ 046xMItCjaOU+wCQUk96SkuUSQfwmhtocZI74eepExSouRK5MvnF1zeSMRCi7DNXF/+9 9nQOiUlZFUx6smY8GbL/yBO1WBSEpv2gtri3EUFeqgE/F/s1jqhvQVU1vcez/jlAN4VK ZIDA== X-Forwarded-Encrypted: i=1; AJvYcCVJ1r7occKejTh0HcIJjlw4rYh+M5Fk0+i0OwRkPWwb66WrfE8jMI12wzcZ7PuBFuWQZVKqUUmhujp/Cg==@lists.infradead.org X-Gm-Message-State: AOJu0Yw1wNv4PifdVtGxws0zqQrG5FWnd+1X7MWqISCweqa4xXJiBdC4 rZFiYW+kv5/3jgjAbw4OaPpzlL7Tz4MNueebhH4Oa2K0Z0Zk+fPdHb7zc1jrdyc= X-Gm-Gg: ASbGncuq7j/huJF3uDJVrg8GbQ8qc7CPBOwnHryD94o7T/JAOgEuhurkNRTBOB1agRs Fi+Lv2n8V8cOJJ85Kpyr5YB4AsZ03rK8mmsXP0jv4iyuVu9a7ujW5CzHayCxgeOjJ1545OOpWy5 z+D+jd/gQGiND604T6AfHDEFoM5GBtllP8S3qUdFCqZeh1v7rabfhEPdlpW5HPV1rfOJdVJNj9v V60jV7jLQVUNLvROMSJWQ6clk3PFdmm9hAen+QcoosVixWkdjSXWCcU2a04xBMkN3otOez6JORv csMBa3NoCUuppg5A X-Google-Smtp-Source: AGHT+IEAhlsJGIdKtITdkCqcTf1jglZE/SWwXLDChC0QYiT0cR7GNzwUW0cObTxbcQCBuKABIqPOaA== X-Received: by 2002:a05:600c:1f17:b0:436:e8b4:36e7 with SMTP id 5b1f17b1804b1-43924987efbmr120307725e9.8.1739223364575; Mon, 10 Feb 2025 13:36:04 -0800 (PST) Received: from carbon-x1.. ([2a01:e0a:e17:9700:16d2:7456:6634:9626]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4394376118esm47541515e9.40.2025.02.10.13.36.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Feb 2025 13:36:03 -0800 (PST) From: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= To: Paul Walmsley , Palmer Dabbelt , Anup Patel , Atish Patra , Shuah Khan , Jonathan Corbet , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org Cc: =?utf-8?b?Q2zDqW1lbnQgTMOpZ2Vy?= , Samuel Holland Subject: [PATCH v2 01/15] riscv: add Firmware Feature (FWFT) SBI extensions definitions Date: Mon, 10 Feb 2025 22:35:34 +0100 Message-ID: <20250210213549.1867704-2-cleger@rivosinc.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250210213549.1867704-1-cleger@rivosinc.com> References: <20250210213549.1867704-1-cleger@rivosinc.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250210_213615_270516_A2C72486 X-CRM114-Status: UNSURE ( 9.51 ) X-CRM114-Notice: Please train this message. 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 The Firmware Features extension (FWFT) was added as part of the SBI 3.0 specification. Add SBI definitions to use this extension. Signed-off-by: Clément Léger Reviewed-by: Samuel Holland Tested-by: Samuel Holland Reviewed-by: Deepak Gupta --- arch/riscv/include/asm/sbi.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 3d250824178b..d373b5c08039 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -35,6 +35,7 @@ enum sbi_ext_id { SBI_EXT_DBCN = 0x4442434E, SBI_EXT_STA = 0x535441, SBI_EXT_NACL = 0x4E41434C, + SBI_EXT_FWFT = 0x46574654, /* Experimentals extensions must lie within this range */ SBI_EXT_EXPERIMENTAL_START = 0x08000000, @@ -402,6 +403,33 @@ enum sbi_ext_nacl_feature { #define SBI_NACL_SHMEM_SRET_X(__i) ((__riscv_xlen / 8) * (__i)) #define SBI_NACL_SHMEM_SRET_X_LAST 31 +/* SBI function IDs for FW feature extension */ +#define SBI_EXT_FWFT_SET 0x0 +#define SBI_EXT_FWFT_GET 0x1 + +enum sbi_fwft_feature_t { + SBI_FWFT_MISALIGNED_EXC_DELEG = 0x0, + SBI_FWFT_LANDING_PAD = 0x1, + SBI_FWFT_SHADOW_STACK = 0x2, + SBI_FWFT_DOUBLE_TRAP = 0x3, + SBI_FWFT_PTE_AD_HW_UPDATING = 0x4, + SBI_FWFT_POINTER_MASKING_PMLEN = 0x5, + SBI_FWFT_LOCAL_RESERVED_START = 0x6, + SBI_FWFT_LOCAL_RESERVED_END = 0x3fffffff, + SBI_FWFT_LOCAL_PLATFORM_START = 0x40000000, + SBI_FWFT_LOCAL_PLATFORM_END = 0x7fffffff, + + SBI_FWFT_GLOBAL_RESERVED_START = 0x80000000, + SBI_FWFT_GLOBAL_RESERVED_END = 0xbfffffff, + SBI_FWFT_GLOBAL_PLATFORM_START = 0xc0000000, + SBI_FWFT_GLOBAL_PLATFORM_END = 0xffffffff, +}; + +#define SBI_FWFT_PLATFORM_FEATURE_BIT (1 << 30) +#define SBI_FWFT_GLOBAL_FEATURE_BIT (1 << 31) + +#define SBI_FWFT_SET_FLAG_LOCK (1 << 0) + /* SBI spec version fields */ #define SBI_SPEC_VERSION_DEFAULT 0x1 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 @@ -419,6 +447,11 @@ enum sbi_ext_nacl_feature { #define SBI_ERR_ALREADY_STARTED -7 #define SBI_ERR_ALREADY_STOPPED -8 #define SBI_ERR_NO_SHMEM -9 +#define SBI_ERR_INVALID_STATE -10 +#define SBI_ERR_BAD_RANGE -11 +#define SBI_ERR_TIMEOUT -12 +#define SBI_ERR_IO -13 +#define SBI_ERR_DENIED_LOCKED -14 extern unsigned long sbi_spec_version; struct sbiret {