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 0D4A6C83000 for ; Mon, 30 Jun 2025 03:50:20 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=oHS/RLYnee+BgGxbPlqFc0T8NyH1ykE/ZYii7pYKon8=; b=FGt+vhsnjv/WHu WinJRBgb33sWdlSNxLroSVNozlqhlL8ptQoHtPG2OWCJbV+YzHs9xnh4WnOe6qHhbE4Lw1Cv4TPMg lqiBVaoeJx0Ii7eU4j9Xw97isCDWpqhE206c1+/yfyU6dKprY7/YJuzZWvAUg8gfybPW//JH9odGF NOLmf0ZKBAsah4a31XCXzGfbu8bKRFJuX+MDvrqo/3WyKj3wVfwjAl/McFcflskdt2IcGvZ6+pbl9 6P/fGzUW3CqREa9NA1yGCCakcFPY/PnUcjHaPs8xP2TBXZEPDo9LOkCnIBxzyz/IieKf5T3Nbgj2X SzbTydzNsnDrw1o3A3Jg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uW5Wu-000000019LM-3tgX; Mon, 30 Jun 2025 03:50:04 +0000 Received: from mail-pf1-x429.google.com ([2607:f8b0:4864:20::429]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uW5VM-00000001918-1UuN for linux-riscv@lists.infradead.org; Mon, 30 Jun 2025 03:48:31 +0000 Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-748da522e79so972971b3a.1 for ; Sun, 29 Jun 2025 20:48:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1751255307; x=1751860107; darn=lists.infradead.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=FFQsxLCkN/yrCHNlyEV/dF68pPJedJM8kd/qOCB51Kk=; b=Gq1wiQFcU6ZzOcmaI0OPznA2RQAQ0VFy1l+eQI3kzH1cbvCJ5ceWkixiV+5BvO36iQ UGtC5ZTkOelXq8IZPOLBgP23B9VYevXx1xItZTYjwh/Vx1vt4V9jHRDZmq6Z2glkh4nx jc1r3/7dcrA2L6+0B0uVg5GTKfUoLIMg1frbvkr0f5uYQmiyV7f0Ov6aKlxzby14OHzN qfGkg/tiOA4sfgNn//PCoNLRyKZGO0Dwxez3gAsFQr4D0M24K3dd0Nw83zABK2HcZw5E e4W9VDlcfw5lsGBnHbS3PajGwBXmMaqPw4ZZxp8M5x/3SF4RVNL//P4KvjiiA/GywYTR HJ3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751255307; x=1751860107; 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=FFQsxLCkN/yrCHNlyEV/dF68pPJedJM8kd/qOCB51Kk=; b=p23t4XFC4dgIxV49gZgAFf6kneHIzpl+ngsoqIPGEyQbo0Jmex8DjlT1dcOV6gd1sD ExI3DQ863z8CsdPsBSoAKGkvRaUhOqNVhcKqueLFXZXUCdEkNKzq3tP2u5E5xze1+Aou Ax9H4oEiv1m8bFqizs6ABu+kkRXZU3+2hms91nfVLLNulgzI4+vGculzng+zVmymyz6w tLiNXKhwuX5ooNaBLK6FsU8AVS+PD+6FcKp42Cla10RZG9l8Jps5VQ4J+ndmo8bUVaW5 rFEfG8iOXuwScdIlfhcukbk9qJkSiuiw+4WA6r5jeYK/hihbKVEUu0xzGHkMCk6/kIqB dbuw== X-Forwarded-Encrypted: i=1; AJvYcCV2Cqr4h119UfDNYlTymQpRXzDqskRQ+An50jIU3t2CNs0Ajah2ncwWHFmiI4eyPAG8bUTTykvc5nG2Uw==@lists.infradead.org X-Gm-Message-State: AOJu0Yz3RRY7c4Y666qtVfF29/J6HLAwHJSrAvF8nO+xoAsYit/3pAPm tDl6m3If8a90B+fQWfq5o56zUN+bJiMMQ21kA0luiQoS2/5mDuj0kuITU/gqRcxF0RnuHh8WLtl f2Mqh X-Gm-Gg: ASbGncvRlJhRfIfJjBb0F5DdAk+bbNaPwQSNRKXhl9yygKYsq67pG83WY3e6OmI/+Om RD+yN9PuRGhsTEOd9vv9rSyaTCfYM0qrHLKbuCRGGfNVxaA565JP2u+ZsUFZzQMMN/zyA/VmdwU CM5BR/kGn47f1NC2jKuaxPZiHViRST9/kEhwnOYNGdrBusKdgMw5y74hI27JG1kZt+8VP9s8Tyz 3gM9FzSTIfNA0Xl7FD8wLIs+yswaCx+ZOITAjXJhYmk3dI6p4JlDs800oWQqxBz1MqsvdeeViJH iZ/wCo0X6qrGLiQCxM/3AxRnBcM10iWmtcHHSrbc4asdARo4pzsom91WdrSLZdEyXlE/Dt9y X-Google-Smtp-Source: AGHT+IHpHBjPFAAATJQptsjtLS2j6ZPZrkAWrRRMr3WRaNURjmZvw7lQa5uyyPBco66LK582kKThmA== X-Received: by 2002:a05:6a00:b4b:b0:73d:fa54:afb9 with SMTP id d2e1a72fcca58-74af6eab8cbmr16901576b3a.7.1751255307612; Sun, 29 Jun 2025 20:48:27 -0700 (PDT) Received: from sunil-pc.Dlink ([106.51.195.230]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-74af57efaecsm7837862b3a.161.2025.06.29.20.48.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 29 Jun 2025 20:48:27 -0700 (PDT) From: Sunil V L To: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-acpi@vger.kernel.org, iommu@lists.linux.dev Subject: [PATCH v3 3/3] iommu/riscv: Add ACPI support Date: Mon, 30 Jun 2025 09:18:03 +0530 Message-ID: <20250630034803.1611262-4-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250630034803.1611262-1-sunilvl@ventanamicro.com> References: <20250630034803.1611262-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250629_204828_394005_5E70A6BB X-CRM114-Status: GOOD ( 19.38 ) 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: , Cc: Anup Patel , Albert Ou , Tomasz Jeznach , Alexandre Ghiti , "Rafael J . Wysocki" , Robin Murphy , Joerg Roedel , Atish Patra , Palmer Dabbelt , Paul Walmsley , Andrew Jones , Will Deacon , Len Brown 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 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(-) diff --git a/drivers/iommu/riscv/iommu-platform.c b/drivers/iommu/riscv/iommu-platform.c index 725e919b97ef..83a28c83f991 100644 --- a/drivers/iommu/riscv/iommu-platform.c +++ b/drivers/iommu/riscv/iommu-platform.c @@ -10,6 +10,8 @@ * Tomasz Jeznach */ +#include +#include #include #include #include @@ -46,6 +48,7 @@ static int riscv_iommu_platform_probe(struct platform_device *pdev) enum riscv_iommu_igs_settings igs; struct device *dev = &pdev->dev; struct riscv_iommu_device *iommu = NULL; + struct irq_domain *msi_domain; struct resource *res = NULL; int vec, ret; @@ -76,8 +79,13 @@ static int riscv_iommu_platform_probe(struct platform_device *pdev) switch (igs) { case RISCV_IOMMU_CAPABILITIES_IGS_BOTH: case RISCV_IOMMU_CAPABILITIES_IGS_MSI: - if (is_of_node(dev->fwnode)) + if (is_of_node(dev_fwnode(dev))) { of_msi_configure(dev, to_of_node(dev->fwnode)); + } else { + msi_domain = irq_find_matching_fwnode(imsic_acpi_get_fwnode(dev), + DOMAIN_BUS_PLATFORM_MSI); + dev_set_msi_domain(dev, msi_domain); + } if (!dev_get_msi_domain(dev)) { dev_warn(dev, "failed to find an MSI domain\n"); @@ -150,6 +158,12 @@ static const struct of_device_id riscv_iommu_of_match[] = { {}, }; +static const struct acpi_device_id riscv_iommu_acpi_match[] = { + { "RSCV0004", 0 }, + {} +}; +MODULE_DEVICE_TABLE(acpi, riscv_iommu_acpi_match); + static struct platform_driver riscv_iommu_platform_driver = { .probe = riscv_iommu_platform_probe, .remove = riscv_iommu_platform_remove, @@ -158,6 +172,7 @@ static struct platform_driver riscv_iommu_platform_driver = { .name = "riscv,iommu", .of_match_table = riscv_iommu_of_match, .suppress_bind_attrs = true, + .acpi_match_table = riscv_iommu_acpi_match, }, }; diff --git a/drivers/iommu/riscv/iommu.c b/drivers/iommu/riscv/iommu.c index bb57092ca901..45a263c9e0d5 100644 --- a/drivers/iommu/riscv/iommu.c +++ b/drivers/iommu/riscv/iommu.c @@ -12,6 +12,8 @@ #define pr_fmt(fmt) "riscv-iommu: " fmt +#include +#include #include #include #include @@ -1651,6 +1653,14 @@ int riscv_iommu_init(struct riscv_iommu_device *iommu) goto err_iodir_off; } + if (!acpi_disabled) { + rc = rimt_iommu_register(iommu->dev); + if (rc) { + dev_err_probe(iommu->dev, rc, "cannot register iommu with RIMT\n"); + goto err_remove_sysfs; + } + } + rc = iommu_device_register(&iommu->iommu, &riscv_iommu_ops, iommu->dev); if (rc) { dev_err_probe(iommu->dev, rc, "cannot register iommu interface\n"); -- 2.43.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv