From patchwork Thu Apr 17 12:19:48 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: 14055443 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C46F824169C for ; Thu, 17 Apr 2025 12:24:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744892651; cv=none; b=WipRj2wZ+NVkao+Lrtw6PqAD3i8eBvIdvLgy/vu6QQ6RZvvFH2uXVLVis0UYM55gsDosXrXAGFDLxYZpewAO7+x7kJp5ij74dnfIzyBqoG1r7Im7gXv8pfslNDaSNePUVvv63lEr+u19IPiXpw0K9Gx5N52IedT5hK9K0wpbOCU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744892651; c=relaxed/simple; bh=aFqX3fLDtG8cy76aRcSSCxbszjtqQl817f+Kcc6ZMK0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=i1tPkeylwrpOPa78cUYvSF7pU/IKERR5IQJpXDv4HIfJCgySCML8lzy3Hx6jJdblJsSt2mt6BeV7XifE2R4/neagffpUpc/CeMvp9RUoklTEHcbmn4b9jqziXSs/t8RB2CGvCexCMLSUkJzcJIqAGFIFGjKuqPxriA/slVd0C3M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com; spf=pass smtp.mailfrom=rivosinc.com; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b=UUaIr5Vv; arc=none smtp.client-ip=209.85.214.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b="UUaIr5Vv" Received: by mail-pl1-f174.google.com with SMTP id d9443c01a7336-2241053582dso9939155ad.1 for ; Thu, 17 Apr 2025 05:24:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1744892649; x=1745497449; 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=MqV/L1fucoXh0zEq3ZbEkv0iZBTOf63rS7eOzOMDARE=; b=UUaIr5VvnqnpwxR3b4Zv8M4q8rfT3fUQA3CCrOcZX7gn8rcfGVmlM7/Zyw6bsU/G/f szDiK5M+YjiZoofXT3zdJn3IVDmvZOHmvsTeidxVrwM1eS7833q9ME/pa3F0hXzwCx8a 7GkyvMsrEOKxDb7hc58I+VRxeDxykDrkMYGHNYO6Y5eJDMmdgGi+JH5MEj6E2ukp7Jk9 Z+ng5rJ1MaACj7AwJjEu+Z6t2aetDcOyew9nnYYE12M4cp9cjj6/D0UqfcRWrLAu6VCV xWrx+qYTu3EuF5Zl2jt/OA3bwwt4ROg6Qc8UnV0toQTQtnSLBTPxrG9iKBOgsliJDDtU 8jtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744892649; x=1745497449; 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=MqV/L1fucoXh0zEq3ZbEkv0iZBTOf63rS7eOzOMDARE=; b=be3GGYVTEElGuiGBTNZgCLn04hOI5uEWTNSKe8aNlfSveJP6TF1BDP7xttIqAi9HsX Y7OQtn4rIR+DmbQ/CyYlzuIJeDHfr1qg+gUSo3dnQL6TzBFUbyh/ph4oXhs67AzXQYrZ h1VfrUhyKDPkG46gaL9m50hhurjQS0SL1Ie90rfX9EwDlgcllXNjeQF6Sw/wC8HpdKtD NJUTfdKZfpfWD/cUL4zkeOhAVUrAcuAkhazsNFk2Sr6uPRpFE2zIklfiJztvZKdx7tmj yC1WUg0DrhxgYVA/wUPZZf6IKLarppsDKtmo8Ttrn6cwv5bdsTYRLFPjVy+SDZeUY4oT f9EA== X-Forwarded-Encrypted: i=1; AJvYcCWToGQsPWTNNYxzCv4rnm5RLVNAvC6c9N8obVXj/GARfmoz8loWKXgzR1HuX0VCZnNgUY4=@vger.kernel.org X-Gm-Message-State: AOJu0YwYaOcIGeiH1K38xeElzFKBN1+hrPXnhLvhD5/dM043krEpwrha APyeyxxApRjBfe3Bf3fj7N4/mqGMyyDLB6B1RpjlQaJA0qwdw5r69SVW8Io+U/A= X-Gm-Gg: ASbGncsD2EcPfAOlmu53xufQqth8YntbT7J1aAD6cP0Doth+lSgtk7zko7DSa+fujWh 2AT1fCQvGQKuSJN2Wizg+0Z9MYA3NFFE7raKePUvu2HeBlHKLoi9inSY54bgPXc+Ll57JvTDKXS ByzH0maSDD8u0p7soXge3le4H9VedlIicmr04pg63SuqEBSAHSUyeFMflkgaQnsYBhghy76rOIe Ufa5CXS+t7ThkLiOUGz13I7LUqKnVo7FkF0Ggwp51Yz4FVuWuJj3mShzbek3X5soHj1wWlbQ2Cv LfiPROcSGXLQcQp2RvQHrBiPXnyWFPqHTC7ZRBtcVg== X-Google-Smtp-Source: AGHT+IFVHOWJJRAXEzH6mdZNYusO/nzJmHfPymZgz+gveEEgUfllUOzI6Ji7vwcW5uJ8Q3EqmqJGfw== X-Received: by 2002:a17:902:e542:b0:21f:f3d:d533 with SMTP id d9443c01a7336-22c358c542fmr78901385ad.2.1744892648939; Thu, 17 Apr 2025 05:24:08 -0700 (PDT) Received: from carbon-x1.. ([2a01:e0a:e17:9700:16d2:7456:6634:9626]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22c3ee1a78dsm18489415ad.253.2025.04.17.05.24.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Apr 2025 05:24:08 -0700 (PDT) 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 , Andrew Jones , Deepak Gupta Subject: [PATCH v5 01/13] riscv: sbi: add Firmware Feature (FWFT) SBI extensions definitions Date: Thu, 17 Apr 2025 14:19:48 +0200 Message-ID: <20250417122337.547969-2-cleger@rivosinc.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250417122337.547969-1-cleger@rivosinc.com> References: <20250417122337.547969-1-cleger@rivosinc.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 Reviewed-by: Andrew Jones --- 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..bb077d0c912f 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 BIT(30) +#define SBI_FWFT_GLOBAL_FEATURE_BIT BIT(31) + +#define SBI_FWFT_SET_FLAG_LOCK BIT(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 {