From patchwork Mon Mar 10 15:12:08 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: 14010277 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) (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 1252722D795 for ; Mon, 10 Mar 2025 15:12:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741619577; cv=none; b=tCCm32qCDPM6fA1cMM0t8TxJa7xpItVyX0XDG50M5vwnQrv8hNK0vGoI7LATVwnMkO2BWqAaloTVG9Ai2ZdFGOAF1rd0xug/ewFf4I1gmuIawDCW2qQA+kNaHjleKON1TnyXtwI6lZBuOOaZjvLghqF6ws0g/FRni/Yz64R95a8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741619577; c=relaxed/simple; bh=2FK1ieYZVZDkEHp8Xg07qiKFT3KgfWyXTE481sBPnIE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=UwiD+4lDnRnX2OZblef/zFqGm85PX5S1VxwLIRaBasqUAqfMT4Hy5boeXmk7kEve19T0AR8Bx9pVmm95FY1VKDQi/gfDlJfS3xA5Q8cHy+6xE65r6Kp0gLAWGEb/FBZxAnvYkRQuUJ/YkNJ4dEU1aFCb4j7/vdVexlKVEuWekG0= 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=rdo7WFjv; arc=none smtp.client-ip=209.85.214.178 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="rdo7WFjv" Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-2255003f4c6so31178995ad.0 for ; Mon, 10 Mar 2025 08:12:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1741619575; x=1742224375; 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=iqoT5ixPEtXdLEI6ocjejwPv6xnA8RHlbYFtktGXOjg=; b=rdo7WFjvTeKJtoU112wx9O/+WnrH9Nr6eQPPOxl2HeDyIGXDkuLa68YKG4RUHniJnV x9NKr/g424ByAPmYXBCdjpfJyctB8imVHykEsmeBozhg8OyKzihy3RFwjXa7ilFOT4rs 7B4rT5wFwWirFR/vL+hHKgoDwl+ika+cbhAlMTYbmrqRuV3BbOwyrravS1bnH2UXKcV9 r60k91AJ1/5t69NGXA52BnkwrY5hWStrrGoPEoqNr9a7Fi3lvfJoTI0cCtPJV1jEUKMA 3G0sUJ0Sx9HszNH0Az4WFeADsVPbjXXceQs6g/tfLETMqn4Wds2BZokdtrG+a7QZ5dn/ PD4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741619575; x=1742224375; 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=iqoT5ixPEtXdLEI6ocjejwPv6xnA8RHlbYFtktGXOjg=; b=N9zMAGbVb24bG4WDaLiqZXNB++Lj0hLFJcVDcUCK5AgEsnm4kn3GLlDcnBcW7WKEQ4 ij9nzGh6Kutv4FQuiiHhkwFUANc6amk97B3rrCuGdcRBx9aP5sidh66CvyXaBAS9J3m5 pmSHGs+PuX2ZdUfgLYTe/zi62jUgikOn8odzRn4Uch4RtZQd/OXc9xDAUXYQcguXjv7J EBsgaA5jX5J2a1io6e4yz92pbrEbQzB7Bp5AJMOLpfsuORg566sf+YQR6zkhPLlKNtvp V3TLh7XgNoL97AOtcnsfEoiT49VJ/2JD1IOZIBKMDZ9mcW4CSPbw+iLpDVCKU/4ltaPn 4nfQ== X-Forwarded-Encrypted: i=1; AJvYcCXW0Q0+jLP55aOigKPHRoC5u/4LtoycIFYSxejeV4aVPw846xO+kgpWuyZvJYZyhL3exMs=@vger.kernel.org X-Gm-Message-State: AOJu0YwuVWvssgtuydu3GR7f39wjhMUHPhrIaSpnCPHCJbxNLPiGVJI5 xy0ED+lfIaWYTvy8Kti62Lj8/2orGzSp43CU/1Ssob0IcGiGhwJib7cMsy+n0GA= X-Gm-Gg: ASbGncv+klibMqtxzLBZdyYbt/wC3whozBCM7yQ7/PwC9n9ohA1TkRKfvaKkB8HmEUt pOcXwPo7oizqf8rzJj3+mCxPPQM2W3emRVm6h3TrdmZgUE4gIkUOYg+eYekTW2euH4SXb5xuw0+ XMwmAHErYkRZaHZLnpe1FNAPL8PMYzzsKYWnHYkAHyX7XTjRpitu2c8C3OB0B9PXhp9VwVzbutv VB+yV+3bonK4zAHJ0Jj5TF0eiFw/HaPnAemObVNGa2EoTs8OxvD0CHfDZ6VYYp+zDr7ECTzB1hZ TIi+tOkTb2ivpcUCM+gTKDwkOoQkFsmuiJ9DlKW6O5LSUg== X-Google-Smtp-Source: AGHT+IFvzTd5QCV2TCtNaJ/EaL6UD5ar2zJmoTEAdGnVQhe1E8h+p63CvIu3O7VcRgR7VvKsoM8L/A== X-Received: by 2002:a17:902:d483:b0:223:4537:65b1 with SMTP id d9443c01a7336-22593185c80mr2418925ad.36.1741619575178; Mon, 10 Mar 2025 08:12:55 -0700 (PDT) Received: from carbon-x1.. ([2a01:e0a:e17:9700:16d2:7456:6634:9626]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-224109e99dfsm79230515ad.91.2025.03.10.08.12.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Mar 2025 08:12:54 -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 , Deepak Gupta Subject: [PATCH v3 01/17] riscv: add Firmware Feature (FWFT) SBI extensions definitions Date: Mon, 10 Mar 2025 16:12:08 +0100 Message-ID: <20250310151229.2365992-2-cleger@rivosinc.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250310151229.2365992-1-cleger@rivosinc.com> References: <20250310151229.2365992-1-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 --- 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 {