From nobody Sat Feb 7 17:06:08 2026 Received: from mail-pj1-f52.google.com (mail-pj1-f52.google.com [209.85.216.52]) (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 EAF18273D6B for ; Fri, 4 Jul 2025 07:04:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751612693; cv=none; b=LtZEhE7eL/Hc4BOt7/xI0wIcn8vC1A2LHYF6zQLIRsu7jEjG4r/+9kw3bemJENoM1W1pN6DzZMo2rCv9Imo5XxL/W/BWMYH7MHg1uz5Msk88TSU8gULj+wMiGOXrovcoGv1TpR7pmquirw7xC651ZwwG0FF/asYdJ1ZsB2+mHfY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751612693; c=relaxed/simple; bh=twGbILBqHJSDdc9PqYErX7hC3c5EMu5fciFa6aeK+xs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eq02H9o8yhtzTPB5iGVOY41ogx71Hkhq5EeLNRZvzspY5rvcObw46qlwhJnkpaQ7OPbvGTi0QPx5KYt1zFFQyxkJI/EmhBavSPqKDMVcuUayBla6Yhsyw2LYynsl6Y1m0+irflvismxD3o8TUIP/QcIlI1aG1MPMdeSFWylIDn8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com; spf=pass smtp.mailfrom=ventanamicro.com; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b=RiiAXU6g; arc=none smtp.client-ip=209.85.216.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="RiiAXU6g" Received: by mail-pj1-f52.google.com with SMTP id 98e67ed59e1d1-3139027b825so553644a91.0 for ; Fri, 04 Jul 2025 00:04:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1751612691; x=1752217491; 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=i7NWz24690I24vfVTDuJoYnj8j4L+1x62uPEQcGO8p0=; b=RiiAXU6gX7c/prskn6ZbY2Rsp/tvSeQCXW3Grvji2tsDZSrFM9rKMDn60N7cPl0rZo eLC2vNO1bX95HOFjlIAH0AinLaRoJxNbd2XzTY9x4KGEbimPgAaZNPXeCJnwSVyAoqoP jAzwjdNpNs/uSNtzwSozqvBhurbJcCFYzR8UCwxx9cEpqOvx3Nj9Ueipz/YFzEWU5f8K TmMNvSS/M7VqPmHBzfDhe96yurBipdRdjuaLhRF1TQKe4Ui9rIoDV3cVvyYqTuGGIDpt PEcO+QSc6HuISSWqgcixOZchFD6de+S1XTxn5+BuFSvfcfX3RroJIhNYwc5YQc4851r3 0iEw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751612691; x=1752217491; 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=i7NWz24690I24vfVTDuJoYnj8j4L+1x62uPEQcGO8p0=; b=MfvfggMta2dsKzx1Qqq8SALwpfocZfG6RakghzFx/8Izj0YhSslTGD9gtEFN3cR5c7 bi+HkrCoH7raJ060yMupSBLOs8au/nwrmX/KivpZQ92ryQElRkCpAAQl/4cHAmJNCQQE ASwaFu+rlnoff0KDVnkVLweB19qSiBcb6PgAwp17JPS/oVwQIgp5Mqw+CjkyrmwKmQUL sAWKDhs8v6RKeaUtqF3Ddk+Q0JnYbrS97dBee2Gh5JGj/HOw6bNel43GKCC7P7pbj9lC QLczrSYYa98zqrdz9AciiRsU8S3pqvXMAoGUr5h6czvE/Bz5HekZOsIWviESI97kGR4g ccYQ== X-Forwarded-Encrypted: i=1; AJvYcCVdrbZPttVoMrXQizxpRYMJOp5NYMDfvTP3HdJDWzGcDRax6msuZtTSK3BHtw1pEfKYzrckgafiNeGitJI=@vger.kernel.org X-Gm-Message-State: AOJu0Ywv1HUb9/4celniyD5lOBw+PQDUYHk2MBUBvuImkJvaBsOYlm89 hJ3SIae/allEo5644XHUzfmCjrNNY2Za+lylrNKlbBi/XUgYzbgF3uHv4IFqL2dTXs8= X-Gm-Gg: ASbGncu9s4UWNZZtqw2ohJZBIzA+WgWJTAgnf+hYQ3hSFh8P2C/t0nQz+J4/mB3l1OG Tb1kRJZcooBc8+tCbxB5ZaQGONU9agoqSqNNUQzVHLPYpt6m7e86yawqwaibkirFZrXGmsS3Rqx UVzY6psYz17i3Af38OBfA3ooFxzv1dT8p+Nm469bj3SftG9Av6zHY2Is/rSsSeP5HwVrn9KDv/U VIbtifX2CSPqOjHbfXYLj40YYIbWG4viwLOWGCh2xgi4tog5aLrFGZlxHgJIf2ERwCVzBua54vk kFdNN2vE0z+JsLv67YrT+LtYRAlBTDc4MbhHOHxrGcHCcNpnOHxREMzunVQSbCDT6S+rBHZaQ3A tdXMaVjEmOto8FfdQSOIzGxmlhQ== X-Google-Smtp-Source: AGHT+IHbhzEYmSPHJ4b0jwZFgDw0qNeqr1RSuBsvBtFR7myfOtAgs9yPg06qlUcyFP0hIps55pjbEg== X-Received: by 2002:a17:90b:1e10:b0:312:e445:fdd9 with SMTP id 98e67ed59e1d1-31aac44b747mr2607975a91.10.1751612690866; Fri, 04 Jul 2025 00:04:50 -0700 (PDT) Received: from anup-ubuntu-vm.localdomain ([103.97.166.196]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-31aaae59a93sm1358697a91.12.2025.07.04.00.04.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jul 2025 00:04:50 -0700 (PDT) From: Anup Patel To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jassi Brar , Thomas Gleixner , "Rafael J . Wysocki" , Mika Westerberg , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Cc: Palmer Dabbelt , Paul Walmsley , Alexandre Ghiti , Len Brown , Sunil V L , Rahul Pathak , Leyfoon Tan , Atish Patra , Andrew Jones , Samuel Holland , Anup Patel , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel , Atish Patra Subject: [PATCH v8 03/24] RISC-V: Add defines for the SBI message proxy extension Date: Fri, 4 Jul 2025 12:33:35 +0530 Message-ID: <20250704070356.1683992-4-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250704070356.1683992-1-apatel@ventanamicro.com> References: <20250704070356.1683992-1-apatel@ventanamicro.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add defines for the new SBI message proxy extension which is part of the SBI v3.0 specification. Reviewed-by: Atish Patra Reviewed-by: Andy Shevchenko Co-developed-by: Rahul Pathak Signed-off-by: Rahul Pathak Signed-off-by: Anup Patel --- arch/riscv/include/asm/sbi.h | 63 ++++++++++++++++++++++++++++++++++++ include/linux/wordpart.h | 8 +++++ 2 files changed, 71 insertions(+) diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 341e74238aa0..22f6e70cd32e 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -10,6 +10,7 @@ #include #include #include +#include =20 #ifdef CONFIG_RISCV_SBI enum sbi_ext_id { @@ -36,6 +37,7 @@ enum sbi_ext_id { SBI_EXT_STA =3D 0x535441, SBI_EXT_NACL =3D 0x4E41434C, SBI_EXT_FWFT =3D 0x46574654, + SBI_EXT_MPXY =3D 0x4D505859, =20 /* Experimentals extensions must lie within this range */ SBI_EXT_EXPERIMENTAL_START =3D 0x08000000, @@ -430,6 +432,67 @@ enum sbi_fwft_feature_t { =20 #define SBI_FWFT_SET_FLAG_LOCK BIT(0) =20 +enum sbi_ext_mpxy_fid { + SBI_EXT_MPXY_GET_SHMEM_SIZE, + SBI_EXT_MPXY_SET_SHMEM, + SBI_EXT_MPXY_GET_CHANNEL_IDS, + SBI_EXT_MPXY_READ_ATTRS, + SBI_EXT_MPXY_WRITE_ATTRS, + SBI_EXT_MPXY_SEND_MSG_WITH_RESP, + SBI_EXT_MPXY_SEND_MSG_WITHOUT_RESP, + SBI_EXT_MPXY_GET_NOTIFICATION_EVENTS, +}; + +enum sbi_mpxy_attribute_id { + /* Standard channel attributes managed by MPXY framework */ + SBI_MPXY_ATTR_MSG_PROT_ID =3D 0x00000000, + SBI_MPXY_ATTR_MSG_PROT_VER =3D 0x00000001, + SBI_MPXY_ATTR_MSG_MAX_LEN =3D 0x00000002, + SBI_MPXY_ATTR_MSG_SEND_TIMEOUT =3D 0x00000003, + SBI_MPXY_ATTR_MSG_COMPLETION_TIMEOUT =3D 0x00000004, + SBI_MPXY_ATTR_CHANNEL_CAPABILITY =3D 0x00000005, + SBI_MPXY_ATTR_SSE_EVENT_ID =3D 0x00000006, + SBI_MPXY_ATTR_MSI_CONTROL =3D 0x00000007, + SBI_MPXY_ATTR_MSI_ADDR_LO =3D 0x00000008, + SBI_MPXY_ATTR_MSI_ADDR_HI =3D 0x00000009, + SBI_MPXY_ATTR_MSI_DATA =3D 0x0000000A, + SBI_MPXY_ATTR_EVENTS_STATE_CONTROL =3D 0x0000000B, + SBI_MPXY_ATTR_STD_ATTR_MAX_IDX, + /* + * Message protocol specific attributes, managed by + * the message protocol specification. + */ + SBI_MPXY_ATTR_MSGPROTO_ATTR_START =3D 0x80000000, + SBI_MPXY_ATTR_MSGPROTO_ATTR_END =3D 0xffffffff +}; + +/* Possible values of MSG_PROT_ID attribute as-per SBI v3.0 (or higher) */ +enum sbi_mpxy_msgproto_id { + SBI_MPXY_MSGPROTO_RPMI_ID =3D 0x0, +}; + +/* RPMI message protocol specific MPXY attributes */ +enum sbi_mpxy_rpmi_attribute_id { + SBI_MPXY_RPMI_ATTR_SERVICEGROUP_ID =3D SBI_MPXY_ATTR_MSGPROTO_ATTR_START, + SBI_MPXY_RPMI_ATTR_SERVICEGROUP_VERSION, + SBI_MPXY_RPMI_ATTR_IMPL_ID, + SBI_MPXY_RPMI_ATTR_IMPL_VERSION, + SBI_MPXY_RPMI_ATTR_MAX_ID +}; + +/* Encoding of MSG_PROT_VER attribute */ +#define SBI_MPXY_MSG_PROT_VER_MAJOR(__ver) upper_16_bits(__ver) +#define SBI_MPXY_MSG_PROT_VER_MINOR(__ver) lower_16_bits(__ver) +#define SBI_MPXY_MSG_PROT_MKVER(__maj, __min) make_u32_from_two_u16(__maj,= __min) + +/* Capabilities available through CHANNEL_CAPABILITY attribute */ +#define SBI_MPXY_CHAN_CAP_MSI BIT(0) +#define SBI_MPXY_CHAN_CAP_SSE BIT(1) +#define SBI_MPXY_CHAN_CAP_EVENTS_STATE BIT(2) +#define SBI_MPXY_CHAN_CAP_SEND_WITH_RESP BIT(3) +#define SBI_MPXY_CHAN_CAP_SEND_WITHOUT_RESP BIT(4) +#define SBI_MPXY_CHAN_CAP_GET_NOTIFICATIONS BIT(5) + /* SBI spec version fields */ #define SBI_SPEC_VERSION_DEFAULT 0x1 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 diff --git a/include/linux/wordpart.h b/include/linux/wordpart.h index 5a7b97bb7c95..ed8717730037 100644 --- a/include/linux/wordpart.h +++ b/include/linux/wordpart.h @@ -31,6 +31,14 @@ */ #define lower_16_bits(n) ((u16)((n) & 0xffff)) =20 +/** + * make_u32_from_two_u16 - return u32 number by combining + * two u16 numbers. + * @hi: upper 16 bit number + * @lo: lower 16 bit number + */ +#define make_u32_from_two_u16(hi, lo) (((u32)(hi) << 16) | (u32)(lo)) + /** * REPEAT_BYTE - repeat the value @x multiple times as an unsigned long va= lue * @x: value to repeat --=20 2.43.0