From nobody Wed Dec 17 17:30:06 2025 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) (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 8E7C3183098 for ; Mon, 17 Mar 2025 17:08:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742231291; cv=none; b=LDJ/O6Awtm49M0B31+W5uSlR8mmYpXvDI7r31BjYbowMvpFxqWxVspMX/xCRT75bqSgrnE2lazH62KmI8ml2MFe9u4AbqtCgZ8q2SUlDD2JbytLiZGdDD8ssJHsp40N6jv0ncM3GGtIgnS8YRo/16I81/6E6C3BPrCY0qczjtO0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742231291; c=relaxed/simple; bh=gMTbJG/v304/RzgyXF89VuN8yMkVW4//gJ2IFBZulAM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=c1N2GGFMU1VIVUoxqlBgUv7MSh+cHVdFL+pWFwfA0sIkwaCpql11V1UAnpfKdxBnWnzIAOLRT8Z8Ycebz9IywR1aIKNJ+X6uCp3BZ06RCrsdtRvHn3Fvu5OXSykq0Z9eq4NMqhl697zcJG6URQMoQ+jx9RHIlB5nG3vGu2T0RU0= 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=vlSOjrou; arc=none smtp.client-ip=209.85.128.51 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="vlSOjrou" Received: by mail-wm1-f51.google.com with SMTP id 5b1f17b1804b1-43cf257158fso15849675e9.2 for ; Mon, 17 Mar 2025 10:08:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1742231288; x=1742836088; 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=CVImGrzi7Si4eY1ElT4GTBjapJa7KEDVy79wJkwRK9M=; b=vlSOjrouJL51ciijdwZGFojk6POOm3owvskqTivEWyPbJGLQBUPyx8mt5+6UxUnvxE 1MtYZMTXp5F8WTbpi+hnS/rZnA0LpaovyoMK4+hZNmppauxAdcYX6RaZc6D1ca7n2rqc xelubx6mBl/as7//VNlbWan9QKd9Z/rB8jumEfoKSOtVmT6JRpXIDeyLeo7/E4ygYNm0 zG2Lkd/mVinBXdWq5NPt5VZwDmpVZyv9iQPVRmvBmqEcFvk5Hfq+R5A3gcj8zRkU7TOl RAfehYGaXIXgGQ4I/0e1Kjgv+H1AoPwmhrA/rElKHzxBkT9CqltR1c4f9uJUX1DnXrCT M17w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742231288; x=1742836088; 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=CVImGrzi7Si4eY1ElT4GTBjapJa7KEDVy79wJkwRK9M=; b=JC2VuS6PXQmjfMkM48B2N8yc+mkvv03iKHf4iuM3oP9MfPu7XlWeeP3R+mppcprHAI B65FmtP2sK7KCozwy64mQtgNCayACZnie5enhGmn8sYSH2nhaOUxa0AiS9PLzoRc/EAO DFd8CylqP/AS/c9NQ/86kgf8WvzlLOzlmXW8zzLe1NyBKaqRKRtvTLsBDW8rn8mnxXtb D4aFti2T5YB+zrZUp9j/Xq3i44GBo0KCFFTm8GllOkvC/jvi70kLL6HAb65DwiPXtqTA yLMHHTPVYIEU3qDGuxMUrE/nRsjrPQ99ctam59x1dT9eMQFmUWqS+kOJ7/MYXp80UAl/ 2rgA== X-Forwarded-Encrypted: i=1; AJvYcCV/8vmeHmUeKzpygSzEzhJ0E4Uvr7RNCAzcpPFg3Iig91ZqI/jhdZJXz1POed05qdTJspi86RFGbt7rriI=@vger.kernel.org X-Gm-Message-State: AOJu0Yye0Au/QYeJ6E62T6xR0E83z+cqnq1857E0PUOskC05WzaWnaOS pE0ELj/ObwC2AFqCPzu5k7U9djporvNidHRVK4S9OuinLK943tkZx2eLzAJXJFQ= X-Gm-Gg: ASbGncvzpys5NOy4/2Ee/Lkkx7gp4f/ch8EAChbkPL4fiYgDctTzgvRWCg6Jis4zcxk hSK1Pbddpww8PTm4gaboR2P2P3Zoqa4zj3osmvAcA/QL1UZdHM1R6Z5FilHd+ThII2xzbMsxk4m r2aBVvQR7jGWxoU70XxvWXmbfnOWjxm6UD+lqrZJ+Ik9CAaYgVbpaK3IxxnJBgiPvQ0JIgChg1j NUM2JKsoQr4DUnWw/s4Wusk8ob2fizw9SiK3ss5+m8AyiqgUVsfnJ93eSWw0xv7wjwdyRXfa+IL MHY7sOe6+S2vQSAfABqEDpDrvfr1ZkthF//7BbwuDcbHYw== X-Google-Smtp-Source: AGHT+IHKMm/vFlG6UDlvbMz7uYFJ/kE1+rhH+pJF0OJXqGvzOjYrzfvpGlP18pd4myenVCv8U+eYbw== X-Received: by 2002:a05:600c:4ed2:b0:43d:cc9:b0a3 with SMTP id 5b1f17b1804b1-43d1ed000fdmr113482925e9.22.1742231287574; Mon, 17 Mar 2025 10:08:07 -0700 (PDT) Received: from carbon-x1.. ([2a01:e0a:e17:9700:16d2:7456:6634:9626]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43d23cddb2asm96014505e9.39.2025.03.17.10.08.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Mar 2025 10:08:06 -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 v4 01/18] riscv: add Firmware Feature (FWFT) SBI extensions definitions Date: Mon, 17 Mar 2025 18:06:07 +0100 Message-ID: <20250317170625.1142870-2-cleger@rivosinc.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250317170625.1142870-1-cleger@rivosinc.com> References: <20250317170625.1142870-1-cleger@rivosinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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: Cl=C3=A9ment L=C3=A9ger 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 =3D 0x4442434E, SBI_EXT_STA =3D 0x535441, SBI_EXT_NACL =3D 0x4E41434C, + SBI_EXT_FWFT =3D 0x46574654, =20 /* Experimentals extensions must lie within this range */ SBI_EXT_EXPERIMENTAL_START =3D 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 =20 +/* 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 =3D 0x0, + SBI_FWFT_LANDING_PAD =3D 0x1, + SBI_FWFT_SHADOW_STACK =3D 0x2, + SBI_FWFT_DOUBLE_TRAP =3D 0x3, + SBI_FWFT_PTE_AD_HW_UPDATING =3D 0x4, + SBI_FWFT_POINTER_MASKING_PMLEN =3D 0x5, + SBI_FWFT_LOCAL_RESERVED_START =3D 0x6, + SBI_FWFT_LOCAL_RESERVED_END =3D 0x3fffffff, + SBI_FWFT_LOCAL_PLATFORM_START =3D 0x40000000, + SBI_FWFT_LOCAL_PLATFORM_END =3D 0x7fffffff, + + SBI_FWFT_GLOBAL_RESERVED_START =3D 0x80000000, + SBI_FWFT_GLOBAL_RESERVED_END =3D 0xbfffffff, + SBI_FWFT_GLOBAL_PLATFORM_START =3D 0xc0000000, + SBI_FWFT_GLOBAL_PLATFORM_END =3D 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 =20 extern unsigned long sbi_spec_version; struct sbiret { --=20 2.47.2