From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (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 5AFFD28D829 for ; Thu, 24 Apr 2025 17:33:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745516027; cv=none; b=GZFVfVr4nVeyfI7rdF2EojG/ISKbQDe7gxZN5RK5JqKyxwfB6SpgG8hpjD4abN0QPIrznMfVo1kVaE2qGL6gVLCKzTVzY9tPeC3Vt8aAeJZfihx/v9oqwVuXiILrp11IXPOMDsxQhPyopS0jLPPYExe5gi7lx0gAODIswP6qwoI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745516027; c=relaxed/simple; bh=aFqX3fLDtG8cy76aRcSSCxbszjtqQl817f+Kcc6ZMK0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=OKYvH7P6MsNAF/YTru4hd1huhfQ7gSqep+vAGlTD5kg9IGhcWHonmMi8u4k53FlKXxRAoE26oMqzGIsKIt5wCFRCkCSmI2a6AyH3YftjoCSIUGlJOmJYgbdz4zcoB2LlhRR2OC1FH6TzGIW4uowxTfAvFrGt7yWifUIPW5x8n+o= 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=WJwCQifU; arc=none smtp.client-ip=209.85.214.177 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="WJwCQifU" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-22d95f0dda4so20286365ad.2 for ; Thu, 24 Apr 2025 10:33:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1745516025; x=1746120825; 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=WJwCQifUIjEIFJgV0n05o7j7lWn9dcycnDP2Pyyrz7rerqfFUHvaYfGjn5GAoMnJo7 2zRQRzRBACmMJ+eSOPqkgYRZ+wughP9TcJHqjhf0Zanmhq1XpnFwldRUmlcmCw/KkN/g ySIihldhHHDzcVWgaLuMNSxZRrEgeFJK/YDCFXjQdTyx5nJ8F2opt3YduaiIxaTl+MBU dn5fxv9OjXJe3ryU444b0heqdljT2FCo0fmAVG6yLt5tt75SpZTvS00jm9Bwgz0uQrTe 8IfFxPqD1GLYzHVQKJyxbGcAIzdCIDkqGj1NgWPyji5tYs7aIJPFPHf5KrQdJ+Axb9kt ekwA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745516025; x=1746120825; 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=L9CTHKNPVuOz7kjGLfsWz4LgHfXbPvS3xKJdSqz3SjpKBTzq9DcYbzA2WvPRgFoZ0w z0cUajPvy1kje6DMqW+QoHFvzSbxkQY732HunJlg9T+czYLNkT0fSpTIoHSiH6Ij8fit nYdSMHDpHcxXrrtdpCe1pciLszrOh2zMkiyRDY4IJdNIk4OAAuuGTj0C3x1DoMaJhFmL IRftHMTR0F1AoGHJq+/5VPquEqD/IOdKF3shuuhgmomJafBbgd4WvHRS3k5ya0C7o9mN hMnM2RnjChQTgvS8YyTmHkxleDYMDheRLbUZqVyNKTrQtVAzSXfa2RYtjAhnyCUvmViG e+QQ== X-Forwarded-Encrypted: i=1; AJvYcCUmuC/GzSQDoTSBVVCY66Dtk8HoaM0s9/1W4PsSxJ+ozveF2q6VU4SfOXbvEMiPuUQWm7EuRf4fSMQ=@vger.kernel.org X-Gm-Message-State: AOJu0YyVTe/x7UqJqEEnk2Fx26KMk1TGhgxgtxOmxh6HbBx8ylG1Ndjn 531SkmOkrRvxRcl16TppKZFbSkWPnPLbAt/tSp7moKTxwp5DMrGCcqPQT9mW4fg= X-Gm-Gg: ASbGncuw3o8IAoln7000s1FcjtV8EprzDQZ55b7CdRWA1nByDikcqpZ77MU6MlpJ50m pAm1X2fJB/dJyzrkYDUP8SSK+pURWxYMQaLESX1Oro0ZTkPm5hrlGAJi6YY1D5yCxAn0xRaTGim bPVSYggLPCS1Mbb1gXRp1PGOzqSF8p8cRv3Yr0t8anDwSHVrR/DvS/aO4uhR/jIwdQEnMWCG5NL incNzF/0cUId+8FxCWJH/HFxK8egXxteeLB6767FEVajmG587PijWu8EOduUBLKN1LWRaKhvWO6 25w6kkxxWello/3GfFhbWctTyjLl7yaKRO2WlbzchA== X-Google-Smtp-Source: AGHT+IGoXel2WMkjiTK/q7g1/yBkqNZ84Lmsw32W4+SLXcM2BGBaWrGqIbaWGI5EV1R0ZMMR1eKW3w== X-Received: by 2002:a17:903:2445:b0:220:d078:eb33 with SMTP id d9443c01a7336-22db3d71d34mr56439695ad.36.1745516025550; Thu, 24 Apr 2025 10:33:45 -0700 (PDT) Received: from carbon-x1.. ([2a01:e0a:e17:9700:16d2:7456:6634:9626]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22db5100c4esm16270255ad.173.2025.04.24.10.33.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Apr 2025 10:33:44 -0700 (PDT) From: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= 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?q?Cl=C3=A9ment=20L=C3=A9ger?= , Samuel Holland , Andrew Jones , Deepak Gupta Subject: [PATCH v6 01/14] riscv: sbi: add Firmware Feature (FWFT) SBI extensions definitions Date: Thu, 24 Apr 2025 19:31:48 +0200 Message-ID: <20250424173204.1948385-2-cleger@rivosinc.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250424173204.1948385-1-cleger@rivosinc.com> References: <20250424173204.1948385-1-cleger@rivosinc.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 { -- 2.49.0