From patchwork Fri Jun 19 08:20:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613449 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 303EC14B7 for ; Fri, 19 Jun 2020 08:24:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 236F120890 for ; Fri, 19 Jun 2020 08:24:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731364AbgFSIXf (ORCPT ); Fri, 19 Jun 2020 04:23:35 -0400 Received: from foss.arm.com ([217.140.110.172]:46866 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731181AbgFSIUd (ORCPT ); Fri, 19 Jun 2020 04:20:33 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A7289101E; Fri, 19 Jun 2020 01:20:30 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2F6D23F71F; Fri, 19 Jun 2020 01:20:28 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Lorenzo Pieralisi , Will Deacon , Hanjun Guo , Sudeep Holla , Catalin Marinas , Robin Murphy , "Rafael J. Wysocki" , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, Rob Herring , Joerg Roedel , Bjorn Helgaas , Marc Zyngier , Makarand Pawagi , Diana Craciun , Laurentiu Tudor Subject: [PATCH v2 01/12] ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC Date: Fri, 19 Jun 2020 09:20:02 +0100 Message-Id: <20200619082013.13661-2-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org When the iort_match_node_callback is invoked for a named component the match should be executed upon a device with an ACPI companion. For devices with no ACPI companion set-up the ACPI device tree must be walked in order to find the first parent node with a companion set and check the parent node against the named component entry to check whether there is a match and therefore an IORT node describing the in/out ID translation for the device has been found. Signed-off-by: Lorenzo Pieralisi Cc: Will Deacon Cc: Hanjun Guo Cc: Sudeep Holla Cc: Catalin Marinas Cc: Robin Murphy Cc: "Rafael J. Wysocki" --- drivers/acpi/arm64/iort.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 28a6b387e80e..5eee81758184 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -264,15 +264,31 @@ static acpi_status iort_match_node_callback(struct acpi_iort_node *node, if (node->type == ACPI_IORT_NODE_NAMED_COMPONENT) { struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; - struct acpi_device *adev = to_acpi_device_node(dev->fwnode); + struct acpi_device *adev; struct acpi_iort_named_component *ncomp; + struct device *nc_dev = dev; + + /* + * Walk the device tree to find a device with an + * ACPI companion; there is no point in scanning + * IORT for a device matching a named component if + * the device does not have an ACPI companion to + * start with. + */ + do { + adev = ACPI_COMPANION(nc_dev); + if (adev) + break; + + nc_dev = nc_dev->parent; + } while (nc_dev); if (!adev) goto out; status = acpi_get_name(adev->handle, ACPI_FULL_PATHNAME, &buf); if (ACPI_FAILURE(status)) { - dev_warn(dev, "Can't get device full path name\n"); + dev_warn(nc_dev, "Can't get device full path name\n"); goto out; } From patchwork Fri Jun 19 08:20:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613399 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 B1C2314B7 for ; Fri, 19 Jun 2020 08:21:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A17A321548 for ; Fri, 19 Jun 2020 08:21:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731371AbgFSIVn (ORCPT ); Fri, 19 Jun 2020 04:21:43 -0400 Received: from foss.arm.com ([217.140.110.172]:46890 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730924AbgFSIUe (ORCPT ); Fri, 19 Jun 2020 04:20:34 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6B66E11B3; Fri, 19 Jun 2020 01:20:33 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E82783F71F; Fri, 19 Jun 2020 01:20:30 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Lorenzo Pieralisi , Bjorn Helgaas , Will Deacon , Hanjun Guo , Sudeep Holla , Catalin Marinas , Robin Murphy , "Rafael J. Wysocki" , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, Rob Herring , Joerg Roedel , Marc Zyngier , Makarand Pawagi , Diana Craciun , Laurentiu Tudor Subject: [PATCH v2 02/12] ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic Date: Fri, 19 Jun 2020 09:20:03 +0100 Message-Id: <20200619082013.13661-3-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org iort_get_device_domain() is PCI specific but it need not be, since it can be used to retrieve IRQ domain nexus of any kind by adding an irq_domain_bus_token input to it. Make it PCI agnostic by also renaming the requestor ID input to a more generic ID name. Signed-off-by: Lorenzo Pieralisi Acked-by: Bjorn Helgaas # pci/msi.c Cc: Will Deacon Cc: Hanjun Guo Cc: Bjorn Helgaas Cc: Sudeep Holla Cc: Catalin Marinas Cc: Robin Murphy Cc: "Rafael J. Wysocki" --- drivers/acpi/arm64/iort.c | 14 +++++++------- drivers/pci/msi.c | 3 ++- include/linux/acpi_iort.h | 7 ++++--- 3 files changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 5eee81758184..902e2aaca946 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -550,7 +550,6 @@ static struct acpi_iort_node *iort_find_dev_node(struct device *dev) node = iort_get_iort_node(dev->fwnode); if (node) return node; - /* * if not, then it should be a platform device defined in * DSDT/SSDT (with Named Component node in IORT) @@ -641,13 +640,13 @@ static int __maybe_unused iort_find_its_base(u32 its_id, phys_addr_t *base) /** * iort_dev_find_its_id() - Find the ITS identifier for a device * @dev: The device. - * @req_id: Device's requester ID + * @id: Device's ID * @idx: Index of the ITS identifier list. * @its_id: ITS identifier. * * Returns: 0 on success, appropriate error value otherwise */ -static int iort_dev_find_its_id(struct device *dev, u32 req_id, +static int iort_dev_find_its_id(struct device *dev, u32 id, unsigned int idx, int *its_id) { struct acpi_iort_its_group *its; @@ -657,7 +656,7 @@ static int iort_dev_find_its_id(struct device *dev, u32 req_id, if (!node) return -ENXIO; - node = iort_node_map_id(node, req_id, NULL, IORT_MSI_TYPE); + node = iort_node_map_id(node, id, NULL, IORT_MSI_TYPE); if (!node) return -ENXIO; @@ -680,19 +679,20 @@ static int iort_dev_find_its_id(struct device *dev, u32 req_id, * * Returns: the MSI domain for this device, NULL otherwise */ -struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id) +struct irq_domain *iort_get_device_domain(struct device *dev, u32 id, + enum irq_domain_bus_token bus_token) { struct fwnode_handle *handle; int its_id; - if (iort_dev_find_its_id(dev, req_id, 0, &its_id)) + if (iort_dev_find_its_id(dev, id, 0, &its_id)) return NULL; handle = iort_find_domain_token(its_id); if (!handle) return NULL; - return irq_find_matching_fwnode(handle, DOMAIN_BUS_PCI_MSI); + return irq_find_matching_fwnode(handle, bus_token); } static void iort_set_device_domain(struct device *dev, diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 6b43a5455c7a..74a91f52ecc0 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1558,7 +1558,8 @@ struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev) pci_for_each_dma_alias(pdev, get_msi_id_cb, &rid); dom = of_msi_map_get_device_domain(&pdev->dev, rid); if (!dom) - dom = iort_get_device_domain(&pdev->dev, rid); + dom = iort_get_device_domain(&pdev->dev, rid, + DOMAIN_BUS_PCI_MSI); return dom; } #endif /* CONFIG_PCI_MSI_IRQ_DOMAIN */ diff --git a/include/linux/acpi_iort.h b/include/linux/acpi_iort.h index 8e7e2ec37f1b..08ec6bd2297f 100644 --- a/include/linux/acpi_iort.h +++ b/include/linux/acpi_iort.h @@ -29,7 +29,8 @@ struct fwnode_handle *iort_find_domain_token(int trans_id); #ifdef CONFIG_ACPI_IORT void acpi_iort_init(void); u32 iort_msi_map_rid(struct device *dev, u32 req_id); -struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id); +struct irq_domain *iort_get_device_domain(struct device *dev, u32 id, + enum irq_domain_bus_token bus_token); void acpi_configure_pmsi_domain(struct device *dev); int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); /* IOMMU interface */ @@ -40,8 +41,8 @@ int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); static inline void acpi_iort_init(void) { } static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id) { return req_id; } -static inline struct irq_domain *iort_get_device_domain(struct device *dev, - u32 req_id) +static inline struct irq_domain *iort_get_device_domain( + struct device *dev, u32 id, enum irq_domain_bus_token bus_token) { return NULL; } static inline void acpi_configure_pmsi_domain(struct device *dev) { } /* IOMMU interface */ From patchwork Fri Jun 19 08:20:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613405 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 D8DB114B7 for ; Fri, 19 Jun 2020 08:22:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CAC6820885 for ; Fri, 19 Jun 2020 08:22:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731364AbgFSIVX (ORCPT ); Fri, 19 Jun 2020 04:21:23 -0400 Received: from foss.arm.com ([217.140.110.172]:46916 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730940AbgFSIUi (ORCPT ); Fri, 19 Jun 2020 04:20:38 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 7EEA11396; Fri, 19 Jun 2020 01:20:37 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id AE18A3F71F; Fri, 19 Jun 2020 01:20:33 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Lorenzo Pieralisi , Will Deacon , Hanjun Guo , Bjorn Helgaas , Sudeep Holla , Catalin Marinas , Robin Murphy , "Rafael J. Wysocki" , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, Rob Herring , Joerg Roedel , Marc Zyngier , Makarand Pawagi , Diana Craciun , Laurentiu Tudor Subject: [PATCH v2 03/12] ACPI/IORT: Make iort_msi_map_rid() PCI agnostic Date: Fri, 19 Jun 2020 09:20:04 +0100 Message-Id: <20200619082013.13661-4-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org There is nothing PCI specific in iort_msi_map_rid(). Rename the function using a bus protocol agnostic name, iort_msi_map_id(), and convert current callers to it. Signed-off-by: Lorenzo Pieralisi Cc: Will Deacon Cc: Hanjun Guo Cc: Bjorn Helgaas Cc: Sudeep Holla Cc: Catalin Marinas Cc: Robin Murphy Cc: "Rafael J. Wysocki" Acked-by: Bjorn Helgaas --- drivers/acpi/arm64/iort.c | 12 ++++++------ drivers/pci/msi.c | 2 +- include/linux/acpi_iort.h | 6 +++--- 3 files changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 902e2aaca946..53f9ef515089 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -568,22 +568,22 @@ static struct acpi_iort_node *iort_find_dev_node(struct device *dev) } /** - * iort_msi_map_rid() - Map a MSI requester ID for a device + * iort_msi_map_id() - Map a MSI input ID for a device * @dev: The device for which the mapping is to be done. - * @req_id: The device requester ID. + * @input_id: The device input ID. * - * Returns: mapped MSI RID on success, input requester ID otherwise + * Returns: mapped MSI ID on success, input ID otherwise */ -u32 iort_msi_map_rid(struct device *dev, u32 req_id) +u32 iort_msi_map_id(struct device *dev, u32 input_id) { struct acpi_iort_node *node; u32 dev_id; node = iort_find_dev_node(dev); if (!node) - return req_id; + return input_id; - iort_node_map_id(node, req_id, &dev_id, IORT_MSI_TYPE); + iort_node_map_id(node, input_id, &dev_id, IORT_MSI_TYPE); return dev_id; } diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 74a91f52ecc0..77f48b95e277 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1536,7 +1536,7 @@ u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev) of_node = irq_domain_get_of_node(domain); rid = of_node ? of_msi_map_rid(&pdev->dev, of_node, rid) : - iort_msi_map_rid(&pdev->dev, rid); + iort_msi_map_id(&pdev->dev, rid); return rid; } diff --git a/include/linux/acpi_iort.h b/include/linux/acpi_iort.h index 08ec6bd2297f..e51425e083da 100644 --- a/include/linux/acpi_iort.h +++ b/include/linux/acpi_iort.h @@ -28,7 +28,7 @@ void iort_deregister_domain_token(int trans_id); struct fwnode_handle *iort_find_domain_token(int trans_id); #ifdef CONFIG_ACPI_IORT void acpi_iort_init(void); -u32 iort_msi_map_rid(struct device *dev, u32 req_id); +u32 iort_msi_map_id(struct device *dev, u32 id); struct irq_domain *iort_get_device_domain(struct device *dev, u32 id, enum irq_domain_bus_token bus_token); void acpi_configure_pmsi_domain(struct device *dev); @@ -39,8 +39,8 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev); int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); #else static inline void acpi_iort_init(void) { } -static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id) -{ return req_id; } +static inline u32 iort_msi_map_id(struct device *dev, u32 id) +{ return id; } static inline struct irq_domain *iort_get_device_domain( struct device *dev, u32 id, enum irq_domain_bus_token bus_token) { return NULL; } From patchwork Fri Jun 19 08:20:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613395 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 2E7F692A for ; Fri, 19 Jun 2020 08:21:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13ADC214D8 for ; Fri, 19 Jun 2020 08:21:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731358AbgFSIVI (ORCPT ); Fri, 19 Jun 2020 04:21:08 -0400 Received: from foss.arm.com ([217.140.110.172]:46940 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730983AbgFSIUl (ORCPT ); Fri, 19 Jun 2020 04:20:41 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 41F2813A1; Fri, 19 Jun 2020 01:20:40 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id BC9ED3F71F; Fri, 19 Jun 2020 01:20:37 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Lorenzo Pieralisi , Will Deacon , Hanjun Guo , Sudeep Holla , Catalin Marinas , Robin Murphy , "Rafael J. Wysocki" , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, Rob Herring , Joerg Roedel , Bjorn Helgaas , Marc Zyngier , Makarand Pawagi , Diana Craciun , Laurentiu Tudor Subject: [PATCH v2 04/12] ACPI/IORT: Remove useless PCI bus walk Date: Fri, 19 Jun 2020 09:20:05 +0100 Message-Id: <20200619082013.13661-5-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The PCI bus domain number (used in the iort_match_node_callback() - pci_domain_nr() call) is cascaded through the PCI bus hierarchy at PCI bus enumeration time, therefore there is no need in iort_find_dev_node() to walk the PCI bus upwards to grab the root bus to be passed to iort_scan_node(), the device->bus PCI bus pointer will do. Remove this useless code. Signed-off-by: Lorenzo Pieralisi Cc: Will Deacon Cc: Hanjun Guo Cc: Sudeep Holla Cc: Catalin Marinas Cc: Robin Murphy Cc: "Rafael J. Wysocki" --- drivers/acpi/arm64/iort.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 53f9ef515089..421c6976ab81 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -558,10 +558,7 @@ static struct acpi_iort_node *iort_find_dev_node(struct device *dev) iort_match_node_callback, dev); } - /* Find a PCI root bus */ pbus = to_pci_dev(dev)->bus; - while (!pci_is_root_bus(pbus)) - pbus = pbus->parent; return iort_scan_node(ACPI_IORT_NODE_PCI_ROOT_COMPLEX, iort_match_node_callback, &pbus->dev); From patchwork Fri Jun 19 08:20:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613417 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 9644914B7 for ; Fri, 19 Jun 2020 08:23:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8090220890 for ; Fri, 19 Jun 2020 08:23:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731254AbgFSIXA (ORCPT ); Fri, 19 Jun 2020 04:23:00 -0400 Received: from foss.arm.com ([217.140.110.172]:47018 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731247AbgFSIVH (ORCPT ); Fri, 19 Jun 2020 04:21:07 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 08EA413D5; Fri, 19 Jun 2020 01:20:43 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 8296D3F71F; Fri, 19 Jun 2020 01:20:40 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Lorenzo Pieralisi , Will Deacon , Hanjun Guo , Sudeep Holla , Catalin Marinas , Robin Murphy , "Rafael J. Wysocki" , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, Rob Herring , Joerg Roedel , Bjorn Helgaas , Marc Zyngier , Makarand Pawagi , Diana Craciun , Laurentiu Tudor Subject: [PATCH v2 05/12] ACPI/IORT: Add an input ID to acpi_dma_configure() Date: Fri, 19 Jun 2020 09:20:06 +0100 Message-Id: <20200619082013.13661-6-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Some HW devices are created as child devices of proprietary busses, that have a bus specific policy defining how the child devices wires representing the devices ID are translated into IOMMU and IRQ controllers device IDs. Current IORT code provides translations for: - PCI devices, where the device ID is well identified at bus level as the requester ID (RID) - Platform devices that are endpoint devices where the device ID is retrieved from the ACPI object IORT mappings (Named components single mappings). A platform device is represented in IORT as a named component node For devices that are child devices of proprietary busses the IORT firmware represents the bus node as a named component node in IORT and it is up to that named component node to define in/out bus specific ID translations for the bus child devices that are allocated and created in a bus specific manner. In order to make IORT ID translations available for proprietary bus child devices, the current ACPI (and IORT) code must be augmented to provide an additional ID parameter to acpi_dma_configure() representing the child devices input ID. This ID is bus specific and it is retrieved in bus specific code. By adding an ID parameter to acpi_dma_configure(), the IORT code can map the child device ID to an IOMMU stream ID through the IORT named component representing the bus in/out ID mappings. Signed-off-by: Lorenzo Pieralisi Cc: Will Deacon Cc: Hanjun Guo Cc: Sudeep Holla Cc: Catalin Marinas Cc: Robin Murphy Cc: "Rafael J. Wysocki" --- drivers/acpi/arm64/iort.c | 59 +++++++++++++++++++++++++++++---------- drivers/acpi/scan.c | 8 ++++-- include/acpi/acpi_bus.h | 9 ++++-- include/linux/acpi.h | 7 +++++ include/linux/acpi_iort.h | 7 +++-- 5 files changed, 67 insertions(+), 23 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 421c6976ab81..ec782e4a0fe4 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -978,19 +978,54 @@ static void iort_named_component_init(struct device *dev, nc->node_flags); } +static int iort_nc_iommu_map(struct device *dev, struct acpi_iort_node *node) +{ + struct acpi_iort_node *parent; + int err = -ENODEV, i = 0; + u32 streamid = 0; + + do { + + parent = iort_node_map_platform_id(node, &streamid, + IORT_IOMMU_TYPE, + i++); + + if (parent) + err = iort_iommu_xlate(dev, parent, streamid); + } while (parent && !err); + + return err; +} + +static int iort_nc_iommu_map_id(struct device *dev, + struct acpi_iort_node *node, + const u32 *in_id) +{ + struct acpi_iort_node *parent; + u32 streamid; + + parent = iort_node_map_id(node, *in_id, &streamid, IORT_IOMMU_TYPE); + if (parent) + return iort_iommu_xlate(dev, parent, streamid); + + return -ENODEV; +} + + /** - * iort_iommu_configure - Set-up IOMMU configuration for a device. + * iort_iommu_configure_id - Set-up IOMMU configuration for a device. * * @dev: device to configure + * @id_in: optional input id const value pointer * * Returns: iommu_ops pointer on configuration success * NULL on configuration failure */ -const struct iommu_ops *iort_iommu_configure(struct device *dev) +const struct iommu_ops *iort_iommu_configure_id(struct device *dev, + const u32 *id_in) { - struct acpi_iort_node *node, *parent; + struct acpi_iort_node *node; const struct iommu_ops *ops; - u32 streamid = 0; int err = -ENODEV; /* @@ -1019,21 +1054,13 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev) if (fwspec && iort_pci_rc_supports_ats(node)) fwspec->flags |= IOMMU_FWSPEC_PCI_RC_ATS; } else { - int i = 0; - node = iort_scan_node(ACPI_IORT_NODE_NAMED_COMPONENT, iort_match_node_callback, dev); if (!node) return NULL; - do { - parent = iort_node_map_platform_id(node, &streamid, - IORT_IOMMU_TYPE, - i++); - - if (parent) - err = iort_iommu_xlate(dev, parent, streamid); - } while (parent && !err); + err = id_in ? iort_nc_iommu_map_id(dev, node, id_in) : + iort_nc_iommu_map(dev, node); if (!err) iort_named_component_init(dev, node); @@ -1058,6 +1085,7 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev) return ops; } + #else static inline const struct iommu_ops *iort_fwspec_iommu_ops(struct device *dev) { return NULL; } @@ -1066,7 +1094,8 @@ static inline int iort_add_device_replay(const struct iommu_ops *ops, { return 0; } 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) +const struct iommu_ops *iort_iommu_configure_id(struct device *dev, + const u32 *input_id) { return NULL; } #endif diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 8777faced51a..2142f1554761 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1457,8 +1457,10 @@ int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, * acpi_dma_configure - Set-up DMA configuration for the device. * @dev: The pointer to the device * @attr: device dma attributes + * @input_id: input device id const value pointer */ -int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr) +int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, + const u32 *input_id) { const struct iommu_ops *iommu; u64 dma_addr = 0, size = 0; @@ -1470,7 +1472,7 @@ int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr) iort_dma_setup(dev, &dma_addr, &size); - iommu = iort_iommu_configure(dev); + iommu = iort_iommu_configure_id(dev, input_id); if (PTR_ERR(iommu) == -EPROBE_DEFER) return -EPROBE_DEFER; @@ -1479,7 +1481,7 @@ int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr) return 0; } -EXPORT_SYMBOL_GPL(acpi_dma_configure); +EXPORT_SYMBOL_GPL(acpi_dma_configure_id); static void acpi_init_coherency(struct acpi_device *adev) { diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 5afb6ceb284f..a3abcc4b7d9f 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -588,8 +588,13 @@ bool acpi_dma_supported(struct acpi_device *adev); enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, u64 *size); -int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr); - +int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, + const u32 *input_id); +static inline int acpi_dma_configure(struct device *dev, + enum dev_dma_attr attr) +{ + return acpi_dma_configure_id(dev, attr, NULL); +} struct acpi_device *acpi_find_child_device(struct acpi_device *parent, u64 address, bool check_children); int acpi_is_root_bridge(acpi_handle); diff --git a/include/linux/acpi.h b/include/linux/acpi.h index d661cd0ee64d..6d2c47489d90 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -905,6 +905,13 @@ static inline int acpi_dma_configure(struct device *dev, return 0; } +static inline int acpi_dma_configure_id(struct device *dev, + enum dev_dma_attr attr, + const u32 *input_id) +{ + return 0; +} + #define ACPI_PTR(_ptr) (NULL) static inline void acpi_device_set_enumerated(struct acpi_device *adev) diff --git a/include/linux/acpi_iort.h b/include/linux/acpi_iort.h index e51425e083da..20a32120bb88 100644 --- a/include/linux/acpi_iort.h +++ b/include/linux/acpi_iort.h @@ -35,7 +35,8 @@ void acpi_configure_pmsi_domain(struct device *dev); int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); /* IOMMU interface */ void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size); -const struct iommu_ops *iort_iommu_configure(struct device *dev); +const struct iommu_ops *iort_iommu_configure_id(struct device *dev, + const u32 *id_in); int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); #else static inline void acpi_iort_init(void) { } @@ -48,8 +49,8 @@ static inline void acpi_configure_pmsi_domain(struct device *dev) { } /* IOMMU interface */ static inline void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size) { } -static inline const struct iommu_ops *iort_iommu_configure( - struct device *dev) +static inline const struct iommu_ops *iort_iommu_configure_id( + struct device *dev, const u32 *id_in) { return NULL; } static inline int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) From patchwork Fri Jun 19 08:20:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613447 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 1D1EA92A for ; Fri, 19 Jun 2020 08:24:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0C1B6208DB for ; Fri, 19 Jun 2020 08:24:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731400AbgFSIXj (ORCPT ); Fri, 19 Jun 2020 04:23:39 -0400 Received: from foss.arm.com ([217.140.110.172]:47016 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731243AbgFSIVF (ORCPT ); Fri, 19 Jun 2020 04:21:05 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C319A1435; Fri, 19 Jun 2020 01:20:45 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 477D03F71F; Fri, 19 Jun 2020 01:20:43 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Lorenzo Pieralisi , Rob Herring , Joerg Roedel , Robin Murphy , Marc Zyngier , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, "Rafael J. Wysocki" , Hanjun Guo , Bjorn Helgaas , Sudeep Holla , Catalin Marinas , Will Deacon , Makarand Pawagi , Diana Craciun , Laurentiu Tudor Subject: [PATCH v2 06/12] of/iommu: Make of_map_rid() PCI agnostic Date: Fri, 19 Jun 2020 09:20:07 +0100 Message-Id: <20200619082013.13661-7-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org There is nothing PCI specific (other than the RID - requester ID) in the of_map_rid() implementation, so the same function can be reused for input/output IDs mapping for other busses just as well. Rename the RID instances/names to a generic "id" tag. No functionality change intended. Signed-off-by: Lorenzo Pieralisi Cc: Rob Herring Cc: Joerg Roedel Cc: Robin Murphy Cc: Marc Zyngier Acked-by: Joerg Roedel Reviewed-by: Rob Herring --- drivers/iommu/of_iommu.c | 4 ++-- drivers/of/base.c | 42 ++++++++++++++++++++-------------------- drivers/of/irq.c | 2 +- include/linux/of.h | 4 ++-- 4 files changed, 26 insertions(+), 26 deletions(-) diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 20738aacac89..016316244737 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -129,7 +129,7 @@ static int of_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) struct of_phandle_args iommu_spec = { .args_count = 1 }; int err; - err = of_map_rid(info->np, alias, "iommu-map", "iommu-map-mask", + err = of_map_id(info->np, alias, "iommu-map", "iommu-map-mask", &iommu_spec.np, iommu_spec.args); if (err) return err == -ENODEV ? NO_IOMMU : err; @@ -145,7 +145,7 @@ static int of_fsl_mc_iommu_init(struct fsl_mc_device *mc_dev, struct of_phandle_args iommu_spec = { .args_count = 1 }; int err; - err = of_map_rid(master_np, mc_dev->icid, "iommu-map", + err = of_map_id(master_np, mc_dev->icid, "iommu-map", "iommu-map-mask", &iommu_spec.np, iommu_spec.args); if (err) diff --git a/drivers/of/base.c b/drivers/of/base.c index ae03b1218b06..ea44fea99813 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -2201,15 +2201,15 @@ int of_find_last_cache_level(unsigned int cpu) } /** - * of_map_rid - Translate a requester ID through a downstream mapping. + * of_map_id - Translate an ID through a downstream mapping. * @np: root complex device node. - * @rid: device requester ID to map. + * @id: device ID to map. * @map_name: property name of the map to use. * @map_mask_name: optional property name of the mask to use. * @target: optional pointer to a target device node. * @id_out: optional pointer to receive the translated ID. * - * Given a device requester ID, look up the appropriate implementation-defined + * Given a device ID, look up the appropriate implementation-defined * platform ID and/or the target device which receives transactions on that * ID, as per the "iommu-map" and "msi-map" bindings. Either of @target or * @id_out may be NULL if only the other is required. If @target points to @@ -2219,11 +2219,11 @@ int of_find_last_cache_level(unsigned int cpu) * * Return: 0 on success or a standard error code on failure. */ -int of_map_rid(struct device_node *np, u32 rid, +int of_map_id(struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out) { - u32 map_mask, masked_rid; + u32 map_mask, masked_id; int map_len; const __be32 *map = NULL; @@ -2235,7 +2235,7 @@ int of_map_rid(struct device_node *np, u32 rid, if (target) return -ENODEV; /* Otherwise, no map implies no translation */ - *id_out = rid; + *id_out = id; return 0; } @@ -2255,22 +2255,22 @@ int of_map_rid(struct device_node *np, u32 rid, if (map_mask_name) of_property_read_u32(np, map_mask_name, &map_mask); - masked_rid = map_mask & rid; + masked_id = map_mask & id; for ( ; map_len > 0; map_len -= 4 * sizeof(*map), map += 4) { struct device_node *phandle_node; - u32 rid_base = be32_to_cpup(map + 0); + u32 id_base = be32_to_cpup(map + 0); u32 phandle = be32_to_cpup(map + 1); u32 out_base = be32_to_cpup(map + 2); - u32 rid_len = be32_to_cpup(map + 3); + u32 id_len = be32_to_cpup(map + 3); - if (rid_base & ~map_mask) { - pr_err("%pOF: Invalid %s translation - %s-mask (0x%x) ignores rid-base (0x%x)\n", + if (id_base & ~map_mask) { + pr_err("%pOF: Invalid %s translation - %s-mask (0x%x) ignores id-base (0x%x)\n", np, map_name, map_name, - map_mask, rid_base); + map_mask, id_base); return -EFAULT; } - if (masked_rid < rid_base || masked_rid >= rid_base + rid_len) + if (masked_id < id_base || masked_id >= id_base + id_len) continue; phandle_node = of_find_node_by_phandle(phandle); @@ -2288,20 +2288,20 @@ int of_map_rid(struct device_node *np, u32 rid, } if (id_out) - *id_out = masked_rid - rid_base + out_base; + *id_out = masked_id - id_base + out_base; - pr_debug("%pOF: %s, using mask %08x, rid-base: %08x, out-base: %08x, length: %08x, rid: %08x -> %08x\n", - np, map_name, map_mask, rid_base, out_base, - rid_len, rid, masked_rid - rid_base + out_base); + pr_debug("%pOF: %s, using mask %08x, id-base: %08x, out-base: %08x, length: %08x, id: %08x -> %08x\n", + np, map_name, map_mask, id_base, out_base, + id_len, id, masked_id - id_base + out_base); return 0; } - pr_info("%pOF: no %s translation for rid 0x%x on %pOF\n", np, map_name, - rid, target && *target ? *target : NULL); + pr_info("%pOF: no %s translation for id 0x%x on %pOF\n", np, map_name, + id, target && *target ? *target : NULL); /* Bypasses translation */ if (id_out) - *id_out = rid; + *id_out = id; return 0; } -EXPORT_SYMBOL_GPL(of_map_rid); +EXPORT_SYMBOL_GPL(of_map_id); diff --git a/drivers/of/irq.c b/drivers/of/irq.c index a296eaf52a5b..d632bc5b3a2d 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -587,7 +587,7 @@ static u32 __of_msi_map_rid(struct device *dev, struct device_node **np, * "msi-map" property. */ for (parent_dev = dev; parent_dev; parent_dev = parent_dev->parent) - if (!of_map_rid(parent_dev->of_node, rid_in, "msi-map", + if (!of_map_id(parent_dev->of_node, rid_in, "msi-map", "msi-map-mask", np, &rid_out)) break; return rid_out; diff --git a/include/linux/of.h b/include/linux/of.h index c669c0a4732f..60abe3f636ad 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -554,7 +554,7 @@ bool of_console_check(struct device_node *dn, char *name, int index); extern int of_cpu_node_to_id(struct device_node *np); -int of_map_rid(struct device_node *np, u32 rid, +int of_map_id(struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out); @@ -978,7 +978,7 @@ static inline int of_cpu_node_to_id(struct device_node *np) return -ENODEV; } -static inline int of_map_rid(struct device_node *np, u32 rid, +static inline int of_map_id(struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out) { From patchwork Fri Jun 19 08:20:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613455 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 001C692A for ; Fri, 19 Jun 2020 08:24:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E165E214D8 for ; Fri, 19 Jun 2020 08:24:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731358AbgFSIX2 (ORCPT ); Fri, 19 Jun 2020 04:23:28 -0400 Received: from foss.arm.com ([217.140.110.172]:47044 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731271AbgFSIVH (ORCPT ); Fri, 19 Jun 2020 04:21:07 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 9AF64101E; Fri, 19 Jun 2020 01:20:48 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 076663F71F; Fri, 19 Jun 2020 01:20:45 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Lorenzo Pieralisi , Rob Herring , Robin Murphy , Joerg Roedel , Laurentiu Tudor , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, "Rafael J. Wysocki" , Hanjun Guo , Bjorn Helgaas , Sudeep Holla , Catalin Marinas , Will Deacon , Marc Zyngier , Makarand Pawagi , Diana Craciun Subject: [PATCH v2 07/12] of/device: Add input id to of_dma_configure() Date: Fri, 19 Jun 2020 09:20:08 +0100 Message-Id: <20200619082013.13661-8-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Devices sitting on proprietary busses have a device ID space that is owned by the respective bus and related firmware bindings. In order to let the generic OF layer handle the input translations to an IOMMU id, for such busses the current of_dma_configure() interface should be extended in order to allow the bus layer to provide the device input id parameter - that is retrieved/assigned in bus specific code and firmware. Augment of_dma_configure() to add an optional input_id parameter, leaving current functionality unchanged. Signed-off-by: Lorenzo Pieralisi Cc: Rob Herring Cc: Robin Murphy Cc: Joerg Roedel Cc: Laurentiu Tudor Reviewed-by: Rob Herring --- drivers/bus/fsl-mc/fsl-mc-bus.c | 4 +- drivers/iommu/of_iommu.c | 81 ++++++++++++++++++--------------- drivers/of/device.c | 8 ++-- include/linux/of_device.h | 16 ++++++- include/linux/of_iommu.h | 6 ++- 5 files changed, 70 insertions(+), 45 deletions(-) diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 40526da5c6a6..8ead3f0238f2 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -118,11 +118,13 @@ static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env) static int fsl_mc_dma_configure(struct device *dev) { struct device *dma_dev = dev; + struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); + u32 input_id = mc_dev->icid; while (dev_is_fsl_mc(dma_dev)) dma_dev = dma_dev->parent; - return of_dma_configure(dev, dma_dev->of_node, 0); + return of_dma_configure_id(dev, dma_dev->of_node, 0, &input_id); } static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 016316244737..e505b9130a1c 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -118,46 +118,66 @@ static int of_iommu_xlate(struct device *dev, return ret; } -struct of_pci_iommu_alias_info { - struct device *dev; - struct device_node *np; -}; - -static int of_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) +static int of_iommu_configure_dev_id(struct device_node *master_np, + struct device *dev, + const u32 *id) { - struct of_pci_iommu_alias_info *info = data; struct of_phandle_args iommu_spec = { .args_count = 1 }; int err; - err = of_map_id(info->np, alias, "iommu-map", "iommu-map-mask", - &iommu_spec.np, iommu_spec.args); + err = of_map_id(master_np, *id, "iommu-map", + "iommu-map-mask", &iommu_spec.np, + iommu_spec.args); if (err) return err == -ENODEV ? NO_IOMMU : err; - err = of_iommu_xlate(info->dev, &iommu_spec); + err = of_iommu_xlate(dev, &iommu_spec); of_node_put(iommu_spec.np); return err; } -static int of_fsl_mc_iommu_init(struct fsl_mc_device *mc_dev, - struct device_node *master_np) +static int of_iommu_configure_dev(struct device_node *master_np, + struct device *dev) { - struct of_phandle_args iommu_spec = { .args_count = 1 }; - int err; - - err = of_map_id(master_np, mc_dev->icid, "iommu-map", - "iommu-map-mask", &iommu_spec.np, - iommu_spec.args); - if (err) - return err == -ENODEV ? NO_IOMMU : err; + struct of_phandle_args iommu_spec; + int err = NO_IOMMU, idx = 0; + + while (!of_parse_phandle_with_args(master_np, "iommus", + "#iommu-cells", + idx, &iommu_spec)) { + err = of_iommu_xlate(dev, &iommu_spec); + of_node_put(iommu_spec.np); + idx++; + if (err) + break; + } - err = of_iommu_xlate(&mc_dev->dev, &iommu_spec); - of_node_put(iommu_spec.np); return err; } +struct of_pci_iommu_alias_info { + struct device *dev; + struct device_node *np; +}; + +static int of_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) +{ + struct of_pci_iommu_alias_info *info = data; + u32 input_id = alias; + + return of_iommu_configure_dev_id(info->np, info->dev, &input_id); +} + +static int of_iommu_configure_device(struct device_node *master_np, + struct device *dev, const u32 *id) +{ + return (id) ? of_iommu_configure_dev_id(master_np, dev, id) : + of_iommu_configure_dev(master_np, dev); +} + const struct iommu_ops *of_iommu_configure(struct device *dev, - struct device_node *master_np) + struct device_node *master_np, + const u32 *id) { const struct iommu_ops *ops = NULL; struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); @@ -188,21 +208,8 @@ const struct iommu_ops *of_iommu_configure(struct device *dev, pci_request_acs(); err = pci_for_each_dma_alias(to_pci_dev(dev), of_pci_iommu_init, &info); - } else if (dev_is_fsl_mc(dev)) { - err = of_fsl_mc_iommu_init(to_fsl_mc_device(dev), master_np); } else { - struct of_phandle_args iommu_spec; - int idx = 0; - - while (!of_parse_phandle_with_args(master_np, "iommus", - "#iommu-cells", - idx, &iommu_spec)) { - err = of_iommu_xlate(dev, &iommu_spec); - of_node_put(iommu_spec.np); - idx++; - if (err) - break; - } + err = of_iommu_configure_device(master_np, dev, id); fwspec = dev_iommu_fwspec_get(dev); if (!err && fwspec) diff --git a/drivers/of/device.c b/drivers/of/device.c index 27203bfd0b22..b439c1e05434 100644 --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -78,6 +78,7 @@ int of_device_add(struct platform_device *ofdev) * @np: Pointer to OF node having DMA configuration * @force_dma: Whether device is to be set up by of_dma_configure() even if * DMA capability is not explicitly described by firmware. + * @id: Optional const pointer value input id * * Try to get devices's DMA configuration from DT and update it * accordingly. @@ -86,7 +87,8 @@ int of_device_add(struct platform_device *ofdev) * can use a platform bus notifier and handle BUS_NOTIFY_ADD_DEVICE events * to fix up DMA configuration. */ -int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma) +int of_dma_configure_id(struct device *dev, struct device_node *np, + bool force_dma, const u32 *id) { u64 dma_addr, paddr, size = 0; int ret; @@ -160,7 +162,7 @@ int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma) dev_dbg(dev, "device is%sdma coherent\n", coherent ? " " : " not "); - iommu = of_iommu_configure(dev, np); + iommu = of_iommu_configure(dev, np, id); if (PTR_ERR(iommu) == -EPROBE_DEFER) return -EPROBE_DEFER; @@ -171,7 +173,7 @@ int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma) return 0; } -EXPORT_SYMBOL_GPL(of_dma_configure); +EXPORT_SYMBOL_GPL(of_dma_configure_id); int of_device_register(struct platform_device *pdev) { diff --git a/include/linux/of_device.h b/include/linux/of_device.h index 8d31e39dd564..07ca187fc5e4 100644 --- a/include/linux/of_device.h +++ b/include/linux/of_device.h @@ -55,9 +55,15 @@ static inline struct device_node *of_cpu_device_node_get(int cpu) return of_node_get(cpu_dev->of_node); } -int of_dma_configure(struct device *dev, +int of_dma_configure_id(struct device *dev, struct device_node *np, - bool force_dma); + bool force_dma, const u32 *id); +static inline int of_dma_configure(struct device *dev, + struct device_node *np, + bool force_dma) +{ + return of_dma_configure_id(dev, np, force_dma, NULL); +} #else /* CONFIG_OF */ static inline int of_driver_match_device(struct device *dev, @@ -106,6 +112,12 @@ static inline struct device_node *of_cpu_device_node_get(int cpu) return NULL; } +static inline int of_dma_configure_id(struct device *dev, + struct device_node *np, + bool force_dma) +{ + return 0; +} static inline int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma) diff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h index f3d40dd7bb66..16f4b3e87f20 100644 --- a/include/linux/of_iommu.h +++ b/include/linux/of_iommu.h @@ -13,7 +13,8 @@ extern int of_get_dma_window(struct device_node *dn, const char *prefix, size_t *size); extern const struct iommu_ops *of_iommu_configure(struct device *dev, - struct device_node *master_np); + struct device_node *master_np, + const u32 *id); #else @@ -25,7 +26,8 @@ static inline int of_get_dma_window(struct device_node *dn, const char *prefix, } static inline const struct iommu_ops *of_iommu_configure(struct device *dev, - struct device_node *master_np) + struct device_node *master_np, + const u32 *id) { return NULL; } From patchwork Fri Jun 19 08:20:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613439 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 5FBDA14E3 for ; Fri, 19 Jun 2020 08:23:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 492EA214F1 for ; Fri, 19 Jun 2020 08:23:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731286AbgFSIXv (ORCPT ); Fri, 19 Jun 2020 04:23:51 -0400 Received: from foss.arm.com ([217.140.110.172]:47048 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731272AbgFSIVH (ORCPT ); Fri, 19 Jun 2020 04:21:07 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3AED12B; Fri, 19 Jun 2020 01:20:51 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D5D353F71F; Fri, 19 Jun 2020 01:20:48 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Laurentiu Tudor , Diana Craciun , Rob Herring , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, "Rafael J. Wysocki" , Joerg Roedel , Hanjun Guo , Bjorn Helgaas , Sudeep Holla , Robin Murphy , Catalin Marinas , Will Deacon , Marc Zyngier , Makarand Pawagi Subject: [PATCH v2 08/12] dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus Date: Fri, 19 Jun 2020 09:20:09 +0100 Message-Id: <20200619082013.13661-9-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Laurentiu Tudor The existing bindings cannot be used to specify the relationship between fsl-mc devices and GIC ITSes. Add a generic binding for mapping fsl-mc devices to GIC ITSes, using msi-map property. In addition, deprecate msi-parent property which no longer makes sense now that we support translating the MSIs. Signed-off-by: Laurentiu Tudor Signed-off-by: Diana Craciun Cc: Rob Herring Reviewed-by: Rob Herring --- .../devicetree/bindings/misc/fsl,qoriq-mc.txt | 50 ++++++++++++++++--- 1 file changed, 44 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt b/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt index 9134e9bcca56..ebd329181c14 100644 --- a/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt +++ b/Documentation/devicetree/bindings/misc/fsl,qoriq-mc.txt @@ -28,6 +28,16 @@ Documentation/devicetree/bindings/iommu/iommu.txt. For arm-smmu binding, see: Documentation/devicetree/bindings/iommu/arm,smmu.yaml. +The MSI writes are accompanied by sideband data which is derived from the ICID. +The msi-map property is used to associate the devices with both the ITS +controller and the sideband data which accompanies the writes. + +For generic MSI bindings, see +Documentation/devicetree/bindings/interrupt-controller/msi.txt. + +For GICv3 and GIC ITS bindings, see: +Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.yaml. + Required properties: - compatible @@ -49,11 +59,6 @@ Required properties: region may not be present in some scenarios, such as in the device tree presented to a virtual machine. - - msi-parent - Value type: - Definition: Must be present and point to the MSI controller node - handling message interrupts for the MC. - - ranges Value type: Definition: A standard property. Defines the mapping between the child @@ -119,6 +124,28 @@ Optional properties: associated with the listed IOMMU, with the iommu-specifier (i - icid-base + iommu-base). +- msi-map: Maps an ICID to a GIC ITS and associated msi-specifier + data. + + The property is an arbitrary number of tuples of + (icid-base,gic-its,msi-base,length). + + Any ICID in the interval [icid-base, icid-base + length) is + associated with the listed GIC ITS, with the msi-specifier + (i - icid-base + msi-base). + +Deprecated properties: + + - msi-parent + Value type: + Definition: Describes the MSI controller node handling message + interrupts for the MC. When there is no translation + between the ICID and deviceID this property can be used + to describe the MSI controller used by the devices on the + mc-bus. + The use of this property for mc-bus is deprecated. Please + use msi-map. + Example: smmu: iommu@5000000 { @@ -128,13 +155,24 @@ Example: ... }; + gic: interrupt-controller@6000000 { + compatible = "arm,gic-v3"; + ... + } + its: gic-its@6020000 { + compatible = "arm,gic-v3-its"; + msi-controller; + ... + }; + fsl_mc: fsl-mc@80c000000 { compatible = "fsl,qoriq-mc"; reg = <0x00000008 0x0c000000 0 0x40>, /* MC portal base */ <0x00000000 0x08340000 0 0x40000>; /* MC control reg */ - msi-parent = <&its>; /* define map for ICIDs 23-64 */ iommu-map = <23 &smmu 23 41>; + /* define msi map for ICIDs 23-64 */ + msi-map = <23 &its 23 41>; #address-cells = <3>; #size-cells = <1>; From patchwork Fri Jun 19 08:20:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613425 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 EA13914B7 for ; Fri, 19 Jun 2020 08:23:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DD791214D8 for ; Fri, 19 Jun 2020 08:23:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731396AbgFSIXb (ORCPT ); Fri, 19 Jun 2020 04:23:31 -0400 Received: from foss.arm.com ([217.140.110.172]:47072 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731219AbgFSIVH (ORCPT ); Fri, 19 Jun 2020 04:21:07 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EEF0211B3; Fri, 19 Jun 2020 01:20:53 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 78AC73F71F; Fri, 19 Jun 2020 01:20:51 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Diana Craciun , Lorenzo Pieralisi , Bjorn Helgaas , Rob Herring , Marc Zyngier , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, "Rafael J. Wysocki" , Joerg Roedel , Hanjun Guo , Sudeep Holla , Robin Murphy , Catalin Marinas , Will Deacon , Makarand Pawagi , Laurentiu Tudor Subject: [PATCH v2 09/12] of/irq: make of_msi_map_get_device_domain() bus agnostic Date: Fri, 19 Jun 2020 09:20:10 +0100 Message-Id: <20200619082013.13661-10-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Diana Craciun of_msi_map_get_device_domain() is PCI specific but it need not be and can be easily changed to be bus agnostic in order to be used by other busses by adding an IRQ domain bus token as an input parameter. Signed-off-by: Diana Craciun Signed-off-by: Lorenzo Pieralisi Acked-by: Bjorn Helgaas # pci/msi.c Cc: Bjorn Helgaas Cc: Rob Herring Cc: Marc Zyngier Reviewed-by: Rob Herring --- drivers/of/irq.c | 8 +++++--- drivers/pci/msi.c | 2 +- include/linux/of_irq.h | 5 +++-- 3 files changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index d632bc5b3a2d..1005e4f349ef 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -613,18 +613,20 @@ u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in) * of_msi_map_get_device_domain - Use msi-map to find the relevant MSI domain * @dev: device for which the mapping is to be done. * @rid: Requester ID for the device. + * @bus_token: Bus token * * Walk up the device hierarchy looking for devices with a "msi-map" * property. * * Returns: the MSI domain for this device (or NULL on failure) */ -struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 rid) +struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, + u32 bus_token) { struct device_node *np = NULL; - __of_msi_map_rid(dev, &np, rid); - return irq_find_matching_host(np, DOMAIN_BUS_PCI_MSI); + __of_msi_map_rid(dev, &np, id); + return irq_find_matching_host(np, bus_token); } /** diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 77f48b95e277..b4bfe0b03b2d 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1556,7 +1556,7 @@ struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev) u32 rid = pci_dev_id(pdev); pci_for_each_dma_alias(pdev, get_msi_id_cb, &rid); - dom = of_msi_map_get_device_domain(&pdev->dev, rid); + dom = of_msi_map_get_device_domain(&pdev->dev, rid, DOMAIN_BUS_PCI_MSI); if (!dom) dom = iort_get_device_domain(&pdev->dev, rid, DOMAIN_BUS_PCI_MSI); diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 1214cabb2247..7142a3722758 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -52,7 +52,8 @@ extern struct irq_domain *of_msi_get_domain(struct device *dev, struct device_node *np, enum irq_domain_bus_token token); extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, - u32 rid); + u32 id, + u32 bus_token); extern void of_msi_configure(struct device *dev, struct device_node *np); u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in); #else @@ -85,7 +86,7 @@ static inline struct irq_domain *of_msi_get_domain(struct device *dev, return NULL; } static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, - u32 rid) + u32 id, u32 bus_token) { return NULL; } From patchwork Fri Jun 19 08:20:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613435 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 940DE92A for ; Fri, 19 Jun 2020 08:23:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 82D5A208DB for ; Fri, 19 Jun 2020 08:23:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731410AbgFSIXs (ORCPT ); Fri, 19 Jun 2020 04:23:48 -0400 Received: from foss.arm.com ([217.140.110.172]:47098 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731286AbgFSIVH (ORCPT ); Fri, 19 Jun 2020 04:21:07 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id ACA8E1396; Fri, 19 Jun 2020 01:20:56 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 34C783F71F; Fri, 19 Jun 2020 01:20:54 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Lorenzo Pieralisi , Bjorn Helgaas , Rob Herring , Marc Zyngier , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, "Rafael J. Wysocki" , Joerg Roedel , Hanjun Guo , Sudeep Holla , Robin Murphy , Catalin Marinas , Will Deacon , Makarand Pawagi , Diana Craciun , Laurentiu Tudor Subject: [PATCH v2 10/12] of/irq: Make of_msi_map_rid() PCI bus agnostic Date: Fri, 19 Jun 2020 09:20:11 +0100 Message-Id: <20200619082013.13661-11-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org There is nothing PCI bus specific in the of_msi_map_rid() implementation other than the requester ID tag for the input ID space. Rename requester ID to a more generic ID so that the translation code can be used by all busses that require input/output ID translations. No functional change intended. Signed-off-by: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Rob Herring Cc: Marc Zyngier Reviewed-by: Rob Herring --- drivers/of/irq.c | 28 ++++++++++++++-------------- drivers/pci/msi.c | 2 +- include/linux/of_irq.h | 8 ++++---- 3 files changed, 19 insertions(+), 19 deletions(-) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 1005e4f349ef..25d17b8a1a1a 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -576,43 +576,43 @@ void __init of_irq_init(const struct of_device_id *matches) } } -static u32 __of_msi_map_rid(struct device *dev, struct device_node **np, - u32 rid_in) +static u32 __of_msi_map_id(struct device *dev, struct device_node **np, + u32 id_in) { struct device *parent_dev; - u32 rid_out = rid_in; + u32 id_out = id_in; /* * Walk up the device parent links looking for one with a * "msi-map" property. */ for (parent_dev = dev; parent_dev; parent_dev = parent_dev->parent) - if (!of_map_id(parent_dev->of_node, rid_in, "msi-map", - "msi-map-mask", np, &rid_out)) + if (!of_map_id(parent_dev->of_node, id_in, "msi-map", + "msi-map-mask", np, &id_out)) break; - return rid_out; + return id_out; } /** - * of_msi_map_rid - Map a MSI requester ID for a device. + * of_msi_map_id - Map a MSI ID for a device. * @dev: device for which the mapping is to be done. * @msi_np: device node of the expected msi controller. - * @rid_in: unmapped MSI requester ID for the device. + * @id_in: unmapped MSI ID for the device. * * Walk up the device hierarchy looking for devices with a "msi-map" - * property. If found, apply the mapping to @rid_in. + * property. If found, apply the mapping to @id_in. * - * Returns the mapped MSI requester ID. + * Returns the mapped MSI ID. */ -u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in) +u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in) { - return __of_msi_map_rid(dev, &msi_np, rid_in); + return __of_msi_map_id(dev, &msi_np, id_in); } /** * of_msi_map_get_device_domain - Use msi-map to find the relevant MSI domain * @dev: device for which the mapping is to be done. - * @rid: Requester ID for the device. + * @id: Device ID. * @bus_token: Bus token * * Walk up the device hierarchy looking for devices with a "msi-map" @@ -625,7 +625,7 @@ struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, { struct device_node *np = NULL; - __of_msi_map_rid(dev, &np, id); + __of_msi_map_id(dev, &np, id); return irq_find_matching_host(np, bus_token); } diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index b4bfe0b03b2d..19aeadb22f11 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1535,7 +1535,7 @@ u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev) pci_for_each_dma_alias(pdev, get_msi_id_cb, &rid); of_node = irq_domain_get_of_node(domain); - rid = of_node ? of_msi_map_rid(&pdev->dev, of_node, rid) : + rid = of_node ? of_msi_map_id(&pdev->dev, of_node, rid) : iort_msi_map_id(&pdev->dev, rid); return rid; diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 7142a3722758..e8b78139f78c 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -55,7 +55,7 @@ extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, u32 bus_token); extern void of_msi_configure(struct device *dev, struct device_node *np); -u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in); +u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in); #else static inline int of_irq_count(struct device_node *dev) { @@ -93,10 +93,10 @@ static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev static inline void of_msi_configure(struct device *dev, struct device_node *np) { } -static inline u32 of_msi_map_rid(struct device *dev, - struct device_node *msi_np, u32 rid_in) +static inline u32 of_msi_map_id(struct device *dev, + struct device_node *msi_np, u32 id_in) { - return rid_in; + return id_in; } #endif From patchwork Fri Jun 19 08:20:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613445 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 F123614B7 for ; Fri, 19 Jun 2020 08:24:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB60C208DB for ; Fri, 19 Jun 2020 08:24:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731367AbgFSIXl (ORCPT ); Fri, 19 Jun 2020 04:23:41 -0400 Received: from foss.arm.com ([217.140.110.172]:47128 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731288AbgFSIVH (ORCPT ); Fri, 19 Jun 2020 04:21:07 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4DC7813A1; Fri, 19 Jun 2020 01:20:59 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E7EF53F71F; Fri, 19 Jun 2020 01:20:56 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Diana Craciun , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, Rob Herring , "Rafael J. Wysocki" , Joerg Roedel , Hanjun Guo , Bjorn Helgaas , Sudeep Holla , Robin Murphy , Catalin Marinas , Will Deacon , Marc Zyngier , Makarand Pawagi , Laurentiu Tudor Subject: [PATCH v2 11/12] bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver Date: Fri, 19 Jun 2020 09:20:12 +0100 Message-Id: <20200619082013.13661-12-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Diana Craciun The DPRC driver is not taking into account the msi-map property and assumes that the icid is the same as the stream ID. Although this assumption is correct, generalize the code to include a translation between icid and streamID. Furthermore do not just copy the MSI domain from parent (for child containers), but use the information provided by the msi-map property. If the msi-map property is missing from the device tree retain the old behaviour for backward compatibility ie the child DPRC objects inherit the MSI domain from the parent. Signed-off-by: Diana Craciun Acked-by: Marc Zyngier --- drivers/bus/fsl-mc/dprc-driver.c | 31 ++++++--------------- drivers/bus/fsl-mc/fsl-mc-bus.c | 4 +-- drivers/bus/fsl-mc/fsl-mc-msi.c | 31 +++++++++++++-------- drivers/bus/fsl-mc/fsl-mc-private.h | 6 ++-- drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c | 15 +++++++++- 5 files changed, 47 insertions(+), 40 deletions(-) diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c index c8b1c3842c1a..189bff2115a8 100644 --- a/drivers/bus/fsl-mc/dprc-driver.c +++ b/drivers/bus/fsl-mc/dprc-driver.c @@ -592,6 +592,7 @@ static int dprc_probe(struct fsl_mc_device *mc_dev) bool mc_io_created = false; bool msi_domain_set = false; u16 major_ver, minor_ver; + struct irq_domain *mc_msi_domain; if (!is_fsl_mc_bus_dprc(mc_dev)) return -EINVAL; @@ -621,31 +622,15 @@ static int dprc_probe(struct fsl_mc_device *mc_dev) return error; mc_io_created = true; + } - /* - * Inherit parent MSI domain: - */ - dev_set_msi_domain(&mc_dev->dev, - dev_get_msi_domain(parent_dev)); - msi_domain_set = true; + mc_msi_domain = fsl_mc_find_msi_domain(&mc_dev->dev); + if (!mc_msi_domain) { + dev_warn(&mc_dev->dev, + "WARNING: MC bus without interrupt support\n"); } else { - /* - * This is a root DPRC - */ - struct irq_domain *mc_msi_domain; - - if (dev_is_fsl_mc(parent_dev)) - return -EINVAL; - - error = fsl_mc_find_msi_domain(parent_dev, - &mc_msi_domain); - if (error < 0) { - dev_warn(&mc_dev->dev, - "WARNING: MC bus without interrupt support\n"); - } else { - dev_set_msi_domain(&mc_dev->dev, mc_msi_domain); - msi_domain_set = true; - } + dev_set_msi_domain(&mc_dev->dev, mc_msi_domain); + msi_domain_set = true; } error = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id, diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 8ead3f0238f2..824ff77bbe86 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -370,8 +370,8 @@ EXPORT_SYMBOL_GPL(fsl_mc_get_version); /** * fsl_mc_get_root_dprc - function to traverse to the root dprc */ -static void fsl_mc_get_root_dprc(struct device *dev, - struct device **root_dprc_dev) +void fsl_mc_get_root_dprc(struct device *dev, + struct device **root_dprc_dev) { if (!dev) { *root_dprc_dev = NULL; diff --git a/drivers/bus/fsl-mc/fsl-mc-msi.c b/drivers/bus/fsl-mc/fsl-mc-msi.c index 8b9c66d7c4ff..e7bbff445a83 100644 --- a/drivers/bus/fsl-mc/fsl-mc-msi.c +++ b/drivers/bus/fsl-mc/fsl-mc-msi.c @@ -177,23 +177,30 @@ struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode, return domain; } -int fsl_mc_find_msi_domain(struct device *mc_platform_dev, - struct irq_domain **mc_msi_domain) +struct irq_domain *fsl_mc_find_msi_domain(struct device *dev) { - struct irq_domain *msi_domain; - struct device_node *mc_of_node = mc_platform_dev->of_node; + struct irq_domain *msi_domain = NULL; + struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); - msi_domain = of_msi_get_domain(mc_platform_dev, mc_of_node, - DOMAIN_BUS_FSL_MC_MSI); - if (!msi_domain) { - pr_err("Unable to find fsl-mc MSI domain for %pOF\n", - mc_of_node); + msi_domain = of_msi_map_get_device_domain(dev, mc_dev->icid, + DOMAIN_BUS_FSL_MC_MSI); - return -ENOENT; + /* + * if the msi-map property is missing assume that all the + * child containers inherit the domain from the parent + */ + if (!msi_domain) { + struct device *root_dprc_dev; + struct device *bus_dev; + + fsl_mc_get_root_dprc(dev, &root_dprc_dev); + bus_dev = root_dprc_dev->parent; + msi_domain = of_msi_get_domain(bus_dev, + bus_dev->of_node, + DOMAIN_BUS_FSL_MC_MSI); } - *mc_msi_domain = msi_domain; - return 0; + return msi_domain; } static void fsl_mc_msi_free_descs(struct device *dev) diff --git a/drivers/bus/fsl-mc/fsl-mc-private.h b/drivers/bus/fsl-mc/fsl-mc-private.h index 21ca8c756ee7..7a46a12eb747 100644 --- a/drivers/bus/fsl-mc/fsl-mc-private.h +++ b/drivers/bus/fsl-mc/fsl-mc-private.h @@ -595,8 +595,7 @@ int fsl_mc_msi_domain_alloc_irqs(struct device *dev, void fsl_mc_msi_domain_free_irqs(struct device *dev); -int fsl_mc_find_msi_domain(struct device *mc_platform_dev, - struct irq_domain **mc_msi_domain); +struct irq_domain *fsl_mc_find_msi_domain(struct device *dev); int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus, unsigned int irq_count); @@ -613,6 +612,9 @@ void fsl_destroy_mc_io(struct fsl_mc_io *mc_io); bool fsl_mc_is_root_dprc(struct device *dev); +void fsl_mc_get_root_dprc(struct device *dev, + struct device **root_dprc_dev); + struct fsl_mc_device *fsl_mc_device_lookup(struct fsl_mc_obj_desc *obj_desc, struct fsl_mc_device *mc_bus_dev); diff --git a/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c index 606efa64adff..a5c8d577e424 100644 --- a/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c +++ b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c @@ -23,6 +23,18 @@ static struct irq_chip its_msi_irq_chip = { .irq_set_affinity = msi_domain_set_affinity }; +static u32 fsl_mc_msi_domain_get_msi_id(struct irq_domain *domain, + struct fsl_mc_device *mc_dev) +{ + struct device_node *of_node; + u32 out_id; + + of_node = irq_domain_get_of_node(domain); + out_id = of_msi_map_id(&mc_dev->dev, of_node, mc_dev->icid); + + return out_id; +} + static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain, struct device *dev, int nvec, msi_alloc_info_t *info) @@ -43,7 +55,8 @@ static int its_fsl_mc_msi_prepare(struct irq_domain *msi_domain, * NOTE: This device id corresponds to the IOMMU stream ID * associated with the DPRC object (ICID). */ - info->scratchpad[0].ul = mc_bus_dev->icid; + info->scratchpad[0].ul = fsl_mc_msi_domain_get_msi_id(msi_domain, + mc_bus_dev); msi_info = msi_get_domain_info(msi_domain->parent); /* Allocate at least 32 MSIs, and always as a power of 2 */ From patchwork Fri Jun 19 08:20:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Pieralisi X-Patchwork-Id: 11613459 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 762611746 for ; Fri, 19 Jun 2020 08:24:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63263214D8 for ; Fri, 19 Jun 2020 08:24:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731241AbgFSIXQ (ORCPT ); Fri, 19 Jun 2020 04:23:16 -0400 Received: from foss.arm.com ([217.140.110.172]:47150 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731332AbgFSIVH (ORCPT ); Fri, 19 Jun 2020 04:21:07 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1598A13FD; Fri, 19 Jun 2020 01:21:02 -0700 (PDT) Received: from red-moon.arm.com (unknown [10.57.58.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 8E8613F71F; Fri, 19 Jun 2020 01:20:59 -0700 (PDT) From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org Cc: Makarand Pawagi , Diana Craciun , Laurentiu Tudor , iommu@lists.linux-foundation.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, Rob Herring , "Rafael J. Wysocki" , Joerg Roedel , Hanjun Guo , Bjorn Helgaas , Sudeep Holla , Robin Murphy , Catalin Marinas , Will Deacon , Marc Zyngier Subject: [PATCH v2 12/12] bus: fsl-mc: Add ACPI support for fsl-mc Date: Fri, 19 Jun 2020 09:20:13 +0100 Message-Id: <20200619082013.13661-13-lorenzo.pieralisi@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200619082013.13661-1-lorenzo.pieralisi@arm.com> References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Makarand Pawagi Add ACPI support in the fsl-mc driver. Driver parses MC DSDT table to extract memory and other resources. Interrupt (GIC ITS) information is extracted from the MADT table by drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c. IORT table is parsed to configure DMA. Signed-off-by: Makarand Pawagi Signed-off-by: Diana Craciun Signed-off-by: Laurentiu Tudor --- drivers/bus/fsl-mc/fsl-mc-bus.c | 73 ++++++++++++---- drivers/bus/fsl-mc/fsl-mc-msi.c | 37 +++++---- drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c | 92 ++++++++++++++++----- 3 files changed, 150 insertions(+), 52 deletions(-) diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 824ff77bbe86..324d49d6df89 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -18,6 +18,8 @@ #include #include #include +#include +#include #include "fsl-mc-private.h" @@ -38,6 +40,7 @@ struct fsl_mc { struct fsl_mc_device *root_mc_bus_dev; u8 num_translation_ranges; struct fsl_mc_addr_translation_range *translation_ranges; + void *fsl_mc_regs; }; /** @@ -56,6 +59,10 @@ struct fsl_mc_addr_translation_range { phys_addr_t start_phys_addr; }; +#define FSL_MC_FAPR 0x28 +#define MC_FAPR_PL BIT(18) +#define MC_FAPR_BMT BIT(17) + /** * fsl_mc_bus_match - device to driver matching callback * @dev: the fsl-mc device to match against @@ -124,7 +131,10 @@ static int fsl_mc_dma_configure(struct device *dev) while (dev_is_fsl_mc(dma_dev)) dma_dev = dma_dev->parent; - return of_dma_configure_id(dev, dma_dev->of_node, 0, &input_id); + if (dev_of_node(dma_dev)) + return of_dma_configure_id(dev, dma_dev->of_node, 0, &input_id); + + return acpi_dma_configure_id(dev, DEV_DMA_COHERENT, &input_id); } static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, @@ -865,8 +875,11 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) struct fsl_mc_io *mc_io = NULL; int container_id; phys_addr_t mc_portal_phys_addr; - u32 mc_portal_size; - struct resource res; + u32 mc_portal_size, mc_stream_id; + struct resource *plat_res; + + if (!iommu_present(&fsl_mc_bus_type)) + return -EPROBE_DEFER; mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL); if (!mc) @@ -874,19 +887,33 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mc); + plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + mc->fsl_mc_regs = devm_ioremap_resource(&pdev->dev, plat_res); + if (IS_ERR(mc->fsl_mc_regs)) + return PTR_ERR(mc->fsl_mc_regs); + + if (IS_ENABLED(CONFIG_ACPI) && !dev_of_node(&pdev->dev)) { + mc_stream_id = readl(mc->fsl_mc_regs + FSL_MC_FAPR); + /* + * HW ORs the PL and BMT bit, places the result in bit 15 of + * the StreamID and ORs in the ICID. Calculate it accordingly. + */ + mc_stream_id = (mc_stream_id & 0xffff) | + ((mc_stream_id & (MC_FAPR_PL | MC_FAPR_BMT)) ? + 0x4000 : 0); + error = acpi_dma_configure_id(&pdev->dev, DEV_DMA_COHERENT, + &mc_stream_id); + if (error) + dev_warn(&pdev->dev, "failed to configure dma: %d.\n", + error); + } + /* * Get physical address of MC portal for the root DPRC: */ - error = of_address_to_resource(pdev->dev.of_node, 0, &res); - if (error < 0) { - dev_err(&pdev->dev, - "of_address_to_resource() failed for %pOF\n", - pdev->dev.of_node); - return error; - } - - mc_portal_phys_addr = res.start; - mc_portal_size = resource_size(&res); + plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + mc_portal_phys_addr = plat_res->start; + mc_portal_size = resource_size(plat_res); error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr, mc_portal_size, NULL, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io); @@ -903,11 +930,13 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n", mc_version.major, mc_version.minor, mc_version.revision); - error = get_mc_addr_translation_ranges(&pdev->dev, - &mc->translation_ranges, - &mc->num_translation_ranges); - if (error < 0) - goto error_cleanup_mc_io; + if (dev_of_node(&pdev->dev)) { + error = get_mc_addr_translation_ranges(&pdev->dev, + &mc->translation_ranges, + &mc->num_translation_ranges); + if (error < 0) + goto error_cleanup_mc_io; + } error = dprc_get_container_id(mc_io, 0, &container_id); if (error < 0) { @@ -934,6 +963,7 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) goto error_cleanup_mc_io; mc->root_mc_bus_dev = mc_bus_dev; + mc_bus_dev->dev.fwnode = pdev->dev.fwnode; return 0; error_cleanup_mc_io: @@ -967,11 +997,18 @@ static const struct of_device_id fsl_mc_bus_match_table[] = { MODULE_DEVICE_TABLE(of, fsl_mc_bus_match_table); +static const struct acpi_device_id fsl_mc_bus_acpi_match_table[] = { + {"NXP0008", 0 }, + { } +}; +MODULE_DEVICE_TABLE(acpi, fsl_mc_bus_acpi_match_table); + static struct platform_driver fsl_mc_bus_driver = { .driver = { .name = "fsl_mc_bus", .pm = NULL, .of_match_table = fsl_mc_bus_match_table, + .acpi_match_table = fsl_mc_bus_acpi_match_table, }, .probe = fsl_mc_bus_probe, .remove = fsl_mc_bus_remove, diff --git a/drivers/bus/fsl-mc/fsl-mc-msi.c b/drivers/bus/fsl-mc/fsl-mc-msi.c index e7bbff445a83..8edadf05cbb7 100644 --- a/drivers/bus/fsl-mc/fsl-mc-msi.c +++ b/drivers/bus/fsl-mc/fsl-mc-msi.c @@ -13,6 +13,7 @@ #include #include #include +#include #include "fsl-mc-private.h" @@ -179,25 +180,31 @@ struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode, struct irq_domain *fsl_mc_find_msi_domain(struct device *dev) { - struct irq_domain *msi_domain = NULL; + struct device *root_dprc_dev; + struct device *bus_dev; + struct irq_domain *msi_domain; struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); - msi_domain = of_msi_map_get_device_domain(dev, mc_dev->icid, + fsl_mc_get_root_dprc(dev, &root_dprc_dev); + bus_dev = root_dprc_dev->parent; + + if (bus_dev->of_node) { + msi_domain = of_msi_map_get_device_domain(dev, + mc_dev->icid, DOMAIN_BUS_FSL_MC_MSI); - /* - * if the msi-map property is missing assume that all the - * child containers inherit the domain from the parent - */ - if (!msi_domain) { - struct device *root_dprc_dev; - struct device *bus_dev; - - fsl_mc_get_root_dprc(dev, &root_dprc_dev); - bus_dev = root_dprc_dev->parent; - msi_domain = of_msi_get_domain(bus_dev, - bus_dev->of_node, - DOMAIN_BUS_FSL_MC_MSI); + /* + * if the msi-map property is missing assume that all the + * child containers inherit the domain from the parent + */ + if (!msi_domain) + + msi_domain = of_msi_get_domain(bus_dev, + bus_dev->of_node, + DOMAIN_BUS_FSL_MC_MSI); + } else { + msi_domain = iort_get_device_domain(dev, mc_dev->icid, + DOMAIN_BUS_FSL_MC_MSI); } return msi_domain; diff --git a/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c index a5c8d577e424..634263dfd7b5 100644 --- a/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c +++ b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c @@ -7,6 +7,8 @@ * */ +#include +#include #include #include #include @@ -30,7 +32,8 @@ static u32 fsl_mc_msi_domain_get_msi_id(struct irq_domain *domain, u32 out_id; of_node = irq_domain_get_of_node(domain); - out_id = of_msi_map_id(&mc_dev->dev, of_node, mc_dev->icid); + out_id = of_node ? of_msi_map_id(&mc_dev->dev, of_node, mc_dev->icid) : + iort_msi_map_id(&mc_dev->dev, mc_dev->icid); return out_id; } @@ -79,12 +82,71 @@ static const struct of_device_id its_device_id[] = { {}, }; -static int __init its_fsl_mc_msi_init(void) +static void __init its_fsl_mc_msi_init_one(struct fwnode_handle *handle, + const char *name) { - struct device_node *np; struct irq_domain *parent; struct irq_domain *mc_msi_domain; + parent = irq_find_matching_fwnode(handle, DOMAIN_BUS_NEXUS); + if (!parent || !msi_get_domain_info(parent)) { + pr_err("%s: unable to locate ITS domain\n", name); + return; + } + + mc_msi_domain = fsl_mc_msi_create_irq_domain(handle, + &its_fsl_mc_msi_domain_info, + parent); + if (!mc_msi_domain) { + pr_err("%s: unable to create fsl-mc domain\n", name); + return; + } + + pr_info("fsl-mc MSI: %s domain created\n", name); +} + +#ifdef CONFIG_ACPI +static int __init +its_fsl_mc_msi_parse_madt(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_madt_generic_translator *its_entry; + struct fwnode_handle *dom_handle; + const char *node_name; + int err = 0; + + its_entry = (struct acpi_madt_generic_translator *)header; + node_name = kasprintf(GFP_KERNEL, "ITS@0x%lx", + (long)its_entry->base_address); + + dom_handle = iort_find_domain_token(its_entry->translation_id); + if (!dom_handle) { + pr_err("%s: Unable to locate ITS domain handle\n", node_name); + err = -ENXIO; + goto out; + } + + its_fsl_mc_msi_init_one(dom_handle, node_name); + +out: + kfree(node_name); + return err; +} + + +static void __init its_fsl_mc_acpi_msi_init(void) +{ + acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_TRANSLATOR, + its_fsl_mc_msi_parse_madt, 0); +} +#else +static inline void its_fsl_mc_acpi_msi_init(void) { } +#endif + +static void __init its_fsl_mc_of_msi_init(void) +{ + struct device_node *np; + for (np = of_find_matching_node(NULL, its_device_id); np; np = of_find_matching_node(np, its_device_id)) { if (!of_device_is_available(np)) @@ -92,23 +154,15 @@ static int __init its_fsl_mc_msi_init(void) if (!of_property_read_bool(np, "msi-controller")) continue; - parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS); - if (!parent || !msi_get_domain_info(parent)) { - pr_err("%pOF: unable to locate ITS domain\n", np); - continue; - } - - mc_msi_domain = fsl_mc_msi_create_irq_domain( - of_node_to_fwnode(np), - &its_fsl_mc_msi_domain_info, - parent); - if (!mc_msi_domain) { - pr_err("%pOF: unable to create fsl-mc domain\n", np); - continue; - } - - pr_info("fsl-mc MSI: %pOF domain created\n", np); + its_fsl_mc_msi_init_one(of_node_to_fwnode(np), + np->full_name); } +} + +static int __init its_fsl_mc_msi_init(void) +{ + its_fsl_mc_of_msi_init(); + its_fsl_mc_acpi_msi_init(); return 0; }