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Wysocki" , Len Brown , Tomasz Jeznach , Joerg Roedel , Will Deacon , Robin Murphy , Anup Patel , Atish Patra Subject: Re: [PATCH v3 3/3] iommu/riscv: Add ACPI support Message-ID: <20250630-43f937dcdcd84599d28169cd@orel> References: <20250630034803.1611262-1-sunilvl@ventanamicro.com> <20250630034803.1611262-4-sunilvl@ventanamicro.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250630034803.1611262-4-sunilvl@ventanamicro.com> On Mon, Jun 30, 2025 at 09:18:03AM +0530, Sunil V L wrote: > RISC-V IO Mapping Table (RIMT) provides the information about the IOMMU > to the OS in ACPI. Add support for ACPI in RISC-V IOMMU drivers by using > RIMT data. > > The changes at high level are, > > a) Register the IOMMU with RIMT data structures. > b) Enable probing of platform IOMMU in ACPI way using the ACPIID defined > for the RISC-V IOMMU in the BRS spec [1]. Configure the MSI domain if > the platform IOMMU uses MSIs. > > [1] - https://github.com/riscv-non-isa/riscv-brs/blob/main/acpi-id.adoc > > Signed-off-by: Sunil V L > --- > drivers/iommu/riscv/iommu-platform.c | 17 ++++++++++++++++- > drivers/iommu/riscv/iommu.c | 10 ++++++++++ > 2 files changed, 26 insertions(+), 1 deletion(-) > Reviewed-by: Andrew Jones From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 17345C7EE39 for ; Mon, 30 Jun 2025 08:55:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=GeRrUU6RkqW3+msDiUYpxrARkaEwvMSj9o6Tp/stw5o=; b=OXWx5/AiZ/UsVy EV47QWgAPtcaSIdQJ97yISjEIokPNk39fcBLfx+uXdGzzn4Zr5oJgN6ufkh8N5ye7K6b3h/LyN2hC bf1aMvLShaMWX1U4m+EGUgBOxVgJW4JDSNGpDP/ZQnfdRv+GOZxR6x+9r9+Mlm3A0fB6oGsgtBVgU Hn5tyfNxw3JuRY1+a7VGR+fSLkrFWUw3SgxWjCrNDfG8X4kSqw8+LEwEtWIaBGeMJYLL9XR6CLx77 Y7LLCldhf7m2/76yYC9mu3TAHo3KFxvUvjMia5tjIiYOdzFAw7Mvx6BUvfOcnRCY7EXbVW7SNxxsK gAg/GFtwm1+ShZH4JJmg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uWAHm-00000001fjP-47XX; Mon, 30 Jun 2025 08:54:46 +0000 Received: from mail-wr1-x42f.google.com ([2a00:1450:4864:20::42f]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uWAC2-00000001els-33ru for linux-riscv@lists.infradead.org; Mon, 30 Jun 2025 08:48:52 +0000 Received: by mail-wr1-x42f.google.com with SMTP id ffacd0b85a97d-3a51481a598so979871f8f.3 for ; Mon, 30 Jun 2025 01:48:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1751273329; x=1751878129; darn=lists.infradead.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=e0MFmQYTIhwQaPU7YK/VjsEzsIiL6rLtVHCSHLdz344=; b=VFh96UIcbBuw0sVmlqDTA00Xwpy959AQvFDjPI2zLKICdqO1tETFpyATE9/0ZSjpkC YVA+COg2zgDNny6jG2uvnjWkA0T6A8rezkqwDmWvA//rDyvqND6olDWRbHuL5QhR/tMu cc5IIL4uXhXeiRJ3cha2tfYOp9fa9MaDsE/JdBFVE4oePt9WgnhthU7TlKBiKYnqdy6V 6djlnBqVSchXYM3ogqKFbnmMf7ienC3sscnjfw8fMVxvnRM9A4Q3iU0mHuGOwfFhc51f L03dxZlnmyIaOvFJVyVlC8hJA9UzlQhREMONy2ehDaFnibY0W+WWEBL0LG0Ce7tcM2uI qrTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751273329; x=1751878129; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=e0MFmQYTIhwQaPU7YK/VjsEzsIiL6rLtVHCSHLdz344=; b=ZK73AoGFonAgaz2QSrv67kYAfqBPpW3goaZk2unDpVW85joBLyZU59SR4waCI/4/bz 8Q7Jc+/Ktu7EIK685ZMBS3sFtWx8vSOlu06zK9lymBKzPSlac3Pi/6dOK/v19JlDXoG/ cNBZrvy9KnlHJOBeTJmcA1nhnXQRHcAx9WKP2y5C5TdmITgw4GINlCgE077Xghb5TdY2 reQ7/vJZ+4s0XYvyUg8ktAeToK+tg00jsMB018jBI1/PCyC9UYnuSsOAe/LTV2MdF12O 0RoxsEsA2SSbkc/37nk8YtfU6NsAnYMR9R+2PW9zbGs8v4pHU2RFKAcuwHHedgAWRRfC GdzA== X-Forwarded-Encrypted: i=1; AJvYcCWLanayNEvxIRQzIHWH+o/iA3Ic5Jado8SvFj2uZgTZeBT0XGcrHmQYxyPpVsLWVubjZy5DAJkRMUqaUw==@lists.infradead.org X-Gm-Message-State: AOJu0YzQjBz4lYQ345skPncdBT+F4F9Xjsp7hoDn5iVZh4AjDWm65qSC SMpoPMy9oSSmPt83CaibGK+KCv6gyqGUFZs545hL3CQGeClpkn3ecTxNE3HALGYJv98= X-Gm-Gg: ASbGncvwhw5bGxnXVcCJYd1XzkttQJz49d3polLL6Gow9eVvQ2u6k1d08pfZylvmJ8/ BdPtDIhXm9wNkZ53q9QZaASmQZbwbQMRWWq3o/Et+UiGDqVOfvF+RAHEAnOQ98ADomnqBph/AXq D1zXCkFlFWq+2jlMw/OChnuiNqAxjA9hYmOZ+uWziNZCRBwDwKppL/P6MUBT6jhG826V6pGdalk tnprg7ue8KQxRpg6XdTT52zJ/1OG7Elvf6KrTZ/1aSW7OZrRwaDBYGZGy79ZnhUrb9fbbRvKAWh vZfAuSkQco9RQSn0OQANBZxZAQEgHKfOnda/c8L+lKrtb8QvEQ== X-Google-Smtp-Source: AGHT+IFkP2IxHQSzwTBSX2V8J3HFEeGEU2UchiOHVWbWGfVFsEoSfKrpjADgwPpJXxhXznoj1gfTMA== X-Received: by 2002:a05:6000:4b0d:b0:3a4:f435:5801 with SMTP id ffacd0b85a97d-3a8fdb2a190mr10032131f8f.17.1751273329044; Mon, 30 Jun 2025 01:48:49 -0700 (PDT) Received: from localhost ([2a02:8308:a00c:e200::5485]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a88c7e7386sm9698288f8f.20.2025.06.30.01.48.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Jun 2025 01:48:48 -0700 (PDT) Date: Mon, 30 Jun 2025 10:48:47 +0200 From: Andrew Jones To: Sunil V L Cc: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-acpi@vger.kernel.org, iommu@lists.linux.dev, Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , "Rafael J . Wysocki" , Len Brown , Tomasz Jeznach , Joerg Roedel , Will Deacon , Robin Murphy , Anup Patel , Atish Patra Subject: Re: [PATCH v3 3/3] iommu/riscv: Add ACPI support Message-ID: <20250630-43f937dcdcd84599d28169cd@orel> References: <20250630034803.1611262-1-sunilvl@ventanamicro.com> <20250630034803.1611262-4-sunilvl@ventanamicro.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20250630034803.1611262-4-sunilvl@ventanamicro.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250630_014850_768902_852A2D0F X-CRM114-Status: GOOD ( 14.39 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Mon, Jun 30, 2025 at 09:18:03AM +0530, Sunil V L wrote: > RISC-V IO Mapping Table (RIMT) provides the information about the IOMMU > to the OS in ACPI. Add support for ACPI in RISC-V IOMMU drivers by using > RIMT data. > > The changes at high level are, > > a) Register the IOMMU with RIMT data structures. > b) Enable probing of platform IOMMU in ACPI way using the ACPIID defined > for the RISC-V IOMMU in the BRS spec [1]. Configure the MSI domain if > the platform IOMMU uses MSIs. > > [1] - https://github.com/riscv-non-isa/riscv-brs/blob/main/acpi-id.adoc > > Signed-off-by: Sunil V L > --- > drivers/iommu/riscv/iommu-platform.c | 17 ++++++++++++++++- > drivers/iommu/riscv/iommu.c | 10 ++++++++++ > 2 files changed, 26 insertions(+), 1 deletion(-) > Reviewed-by: Andrew Jones _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv