From patchwork Fri Nov 22 10:49:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 11257743 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 462FB112B for ; Fri, 22 Nov 2019 10:55:48 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 0290C20718 for ; Fri, 22 Nov 2019 10:55:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="AiWOaEUz"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="R/GX7Gpn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0290C20718 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; 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=GIrTlZM/yNp2coUTl6LSsFRtSMhwGfvMw9NFBNClyTc=; b=AiWOaEUzHkcw2x XSYNU0pJcGRxMfe1f6Rpd/J0GyU2HRVGHms3ItKgCvfUxgHdEIHbKTursLKZkcoBLYO9maMgS7raF l2MpDeTHXRQtw6wYqtswveos7okg62tVHBwf7WN35Eq/8XMYFQ/azcM2UH5PxbmtQnNOYuhOZm/h9 PNiSie8AvjAS0VFQtGMc2ifXXti+1M9/KOGEhRDt0Jak5koRMchaeTrVKEraeWqKH4xda03XQyMGg 1+PVOmA76fYLuQRy62ozzkukY3MbAWSIHFrvWfCIG67ea6IF6tsLa3z2gJfmFE21EQ/9vop67lfe4 cKaTs7jo05J8DUoO3y7A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iY6bF-0002IQ-5u; Fri, 22 Nov 2019 10:55:41 +0000 Received: from mail-wm1-x342.google.com ([2a00:1450:4864:20::342]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iY6Wl-0005AK-2f for linux-arm-kernel@lists.infradead.org; Fri, 22 Nov 2019 10:51:08 +0000 Received: by mail-wm1-x342.google.com with SMTP id n188so5119270wme.1 for ; Fri, 22 Nov 2019 02:51:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=GmQroTy0ZSrB9+ytyBw658P0+bfjBqqeFkyQrRlY2fc=; b=R/GX7GpncHdtpCGTNb9LZDYyir4t0PAmFjI7FlT5nol5eGqh3g9UoW1PBFoTNplogC SVaBaD4hexSWM3jfSYqGTKlvokoECPyser6aGFmjBzeKT2/KrCawSXcvu8mgYtMRxIMj tjqCar++xgaYfLYaRy3XdgFwRtpRlR7HYSWpL7hpbcrnKLQ/CT50WIpJ4qwVNNF+zNZc UXwNi6d2mNmRLawPvPUm7CP8glqP2G8DYGV8VDXJ3clmTzacXVLkJQNgq1AhzYbkUbhk G7dh/PVGzK1sEon1bwZfxl1rMOZ3neP3I9WNi3BrtVhqN5GNfDY+HDZVheLdZIq1uKyx Bdyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=GmQroTy0ZSrB9+ytyBw658P0+bfjBqqeFkyQrRlY2fc=; b=iin/kUHvcPcF9MWhAqCMEWDyMFHxN0lYTcu9s6cvdr+s52QD2QH62gAeNIdPK6GTe9 KUGdDPViv6CnY65r49YVKr9nnCV4sAdV6FYf9ZoggE3L7VRb4nL+Hszx/XI11CpTLjar 3mV1eUFNsT0qwN0be1i6ArfLEMG8d4TwagM8/Vs9gKPvqIyOWD4kqQfHINH6hm3+T7IA WFJRT6egc2RH8QptEMLfH9gpcHNT4HeAhRj9r/JKpGXCh37ss039zdbqchT2aiD5avq0 f9tl5QIkadJoNjLoKhUYiMudH5Ggc4liWe1EInfXO/RgIUf7cdVILqwwW09YpzKlMwBQ YJzg== X-Gm-Message-State: APjAAAV8ZOuNX39ThoijumWtaj7MNg5vcRz6SPnkyIrRHmu9lf9uen8e VWontYWiq7Sk2e4ktbATrzwGTw== X-Google-Smtp-Source: APXvYqzQ0kK55WM+AUAEgoOeMQBtZwacsLjY81F9irulPCIeYc5srmqzEv2GsM8DeS2tetqh0occ7Q== X-Received: by 2002:a1c:f702:: with SMTP id v2mr8729559wmh.157.1574419861629; Fri, 22 Nov 2019 02:51:01 -0800 (PST) Received: from localhost.localdomain (xdsl-188-155-204-106.adslplus.ch. [188.155.204.106]) by smtp.gmail.com with ESMTPSA id o133sm2088197wmb.4.2019.11.22.02.51.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Nov 2019 02:51:01 -0800 (PST) From: Jean-Philippe Brucker To: linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, virtualization@lists.linux-foundation.org, linux-pci@vger.kernel.org, virtio-dev@lists.oasis-open.org Subject: [RFC 08/13] ACPI/IORT: Add callback to update a device's fwnode Date: Fri, 22 Nov 2019 11:49:55 +0100 Message-Id: <20191122105000.800410-9-jean-philippe@linaro.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191122105000.800410-1-jean-philippe@linaro.org> References: <20191122105000.800410-1-jean-philippe@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191122_025103_447413_C93E7815 X-CRM114-Status: GOOD ( 11.73 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:342 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kevin.tian@intel.com, lorenzo.pieralisi@arm.com, mst@redhat.com, gregkh@linuxfoundation.org, joro@8bytes.org, sudeep.holla@arm.com, rjw@rjwysocki.net, eric.auger@redhat.com, sebastien.boeuf@intel.com, jacob.jun.pan@intel.com, guohanjun@huawei.com, bhelgaas@google.com, jasowang@redhat.com, lenb@kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org For a PCI-based IOMMU, IORT isn't in charge of allocating a fwnode. Let the IOMMU driver update the fwnode associated to an IORT node when available. Signed-off-by: Jean-Philippe Brucker --- drivers/acpi/iort.c | 38 ++++++++++++++++++++++++++++++++++++++ include/linux/acpi_iort.h | 4 ++++ 2 files changed, 42 insertions(+) diff --git a/drivers/acpi/iort.c b/drivers/acpi/iort.c index f08f72d8af78..8263ab275b2b 100644 --- a/drivers/acpi/iort.c +++ b/drivers/acpi/iort.c @@ -1038,11 +1038,49 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev) return ops; } + +/** + * iort_iommu_update_fwnode - update fwnode of a PCI IOMMU + * @dev: the IOMMU device + * @fwnode: the fwnode, or NULL to remove an existing fwnode + * + * A PCI device isn't instantiated by the IORT driver. The IOMMU driver sets or + * removes its fwnode using this function. + */ +void iort_iommu_update_fwnode(struct device *dev, struct fwnode_handle *fwnode) +{ + struct pci_dev *pdev; + struct iort_fwnode *curr; + struct iort_pci_devid *devid; + + if (!dev_is_pci(dev)) + return; + + pdev = to_pci_dev(dev); + + spin_lock(&iort_fwnode_lock); + list_for_each_entry(curr, &iort_fwnode_list, list) { + devid = curr->pci_devid; + if (devid && + pci_domain_nr(pdev->bus) == devid->segment && + pdev->bus->number == devid->bus && + pdev->devfn == devid->devfn) { + WARN_ON(fwnode && curr->fwnode); + curr->fwnode = fwnode; + break; + } + } + spin_unlock(&iort_fwnode_lock); +} +EXPORT_SYMBOL_GPL(iort_iommu_update_fwnode); #else int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) { return 0; } const struct iommu_ops *iort_iommu_configure(struct device *dev) { return NULL; } +static void iort_iommu_update_fwnode(struct device *dev, + struct fwnode_handle *fwnode) +{ } #endif static int nc_dma_get_range(struct device *dev, u64 *size) diff --git a/include/linux/acpi_iort.h b/include/linux/acpi_iort.h index f4db5fff07cf..840635e40d9d 100644 --- a/include/linux/acpi_iort.h +++ b/include/linux/acpi_iort.h @@ -43,6 +43,7 @@ int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size); const struct iommu_ops *iort_iommu_configure(struct device *dev); int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); +void iort_iommu_update_fwnode(struct device *dev, struct fwnode_handle *fwnode); #else static void acpi_iort_register_table(struct acpi_table_header *table, enum iort_table_source source) @@ -63,6 +64,9 @@ static inline const struct iommu_ops *iort_iommu_configure( static inline int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) { return 0; } +static void iort_iommu_update_fwnode(struct device *dev, + struct fwnode_handle *fwnode) +{ } #endif #endif /* __ACPI_IORT_H__ */