From: Bjorn Helgaas <helgaas@kernel.org>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: devicetree@vger.kernel.org, Sudeep Holla <sudeep.holla@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Marc Zyngier <maz@kernel.org>, Hanjun Guo <guohanjun@huawei.com>,
linux-pci@vger.kernel.org,
Makarand Pawagi <makarand.pawagi@nxp.com>,
linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
Diana Craciun <diana.craciun@oss.nxp.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 08/12] of/irq: make of_msi_map_get_device_domain() bus agnostic
Date: Thu, 21 May 2020 14:57:15 -0500 [thread overview]
Message-ID: <20200521195715.GA1171267@bjorn-Precision-5520> (raw)
In-Reply-To: <20200521130008.8266-9-lorenzo.pieralisi@arm.com>
On Thu, May 21, 2020 at 02:00:04PM +0100, Lorenzo Pieralisi wrote:
> From: Diana Craciun <diana.craciun@oss.nxp.com>
>
> 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 <diana.craciun@oss.nxp.com>
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Cc: Bjorn Helgaas <bhelgaas@google.com>
> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Marc Zyngier <maz@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> # pci/msi.c
> ---
> 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 a296eaf52a5b..48a40326984f 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 74a91f52ecc0..9532e1d12d3f 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;
> }
> --
> 2.26.1
>
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next prev parent reply other threads:[~2020-05-21 19:57 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-21 12:59 [PATCH 00/12] ACPI/OF: Upgrade MSI/IOMMU ID mapping APIs Lorenzo Pieralisi
2020-05-21 12:59 ` [PATCH 01/12] ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC Lorenzo Pieralisi
2020-05-21 12:59 ` [PATCH 02/12] ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic Lorenzo Pieralisi
2020-05-21 19:56 ` Bjorn Helgaas
2020-05-21 12:59 ` [PATCH 03/12] ACPI/IORT: Make iort_msi_map_rid() PCI agnostic Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 04/12] ACPI/IORT: Remove useless PCI bus walk Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 05/12] ACPI/IORT: Add an input ID to acpi_dma_configure() Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 06/12] of/iommu: Make of_map_rid() PCI agnostic Lorenzo Pieralisi
2020-05-21 22:47 ` Rob Herring
2020-06-04 14:27 ` Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 07/12] of/device: Add input id to of_dma_configure() Lorenzo Pieralisi
2020-05-21 23:02 ` Rob Herring
2020-06-04 14:49 ` Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 08/12] of/irq: make of_msi_map_get_device_domain() bus agnostic Lorenzo Pieralisi
2020-05-21 19:57 ` Bjorn Helgaas [this message]
2020-05-21 13:00 ` [PATCH 09/12] dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus Lorenzo Pieralisi
2020-05-21 23:10 ` Rob Herring
2020-05-22 9:42 ` Robin Murphy
2020-05-22 9:57 ` Diana Craciun OSS
2020-05-22 14:08 ` Rob Herring
2020-05-22 14:34 ` Robin Murphy
2020-05-22 14:02 ` Rob Herring
2020-05-22 15:38 ` Laurentiu Tudor
2020-05-21 13:00 ` [PATCH 10/12] of/irq: Make of_msi_map_rid() PCI bus agnostic Lorenzo Pieralisi
2020-05-21 23:17 ` Rob Herring
2020-06-04 15:08 ` Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 11/12] bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver Lorenzo Pieralisi
2020-05-21 13:00 ` [PATCH 12/12] bus: fsl-mc: Add ACPI support for fsl-mc Lorenzo Pieralisi
2020-05-21 15:03 ` Laurentiu Tudor
2020-05-22 5:32 ` Makarand Pawagi
2020-05-22 9:53 ` Lorenzo Pieralisi
2020-06-19 8:20 ` [PATCH v2 00/12] ACPI/OF: Upgrade MSI/IOMMU ID mapping APIs Lorenzo Pieralisi
2020-06-19 8:20 ` [PATCH v2 01/12] ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC Lorenzo Pieralisi
2020-06-29 4:24 ` Hanjun Guo
2020-06-29 9:05 ` Lorenzo Pieralisi
2020-06-30 3:06 ` Hanjun Guo
2020-06-30 10:24 ` Lorenzo Pieralisi
2020-06-30 13:04 ` Hanjun Guo
2020-07-01 16:12 ` Robin Murphy
2020-07-02 8:22 ` Hanjun Guo
2020-07-09 9:21 ` Lorenzo Pieralisi
2020-07-09 12:48 ` Hanjun Guo
2020-08-18 0:49 ` Hanjun Guo
2020-06-19 8:20 ` [PATCH v2 02/12] ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic Lorenzo Pieralisi
2020-06-19 8:20 ` [PATCH v2 03/12] ACPI/IORT: Make iort_msi_map_rid() PCI agnostic Lorenzo Pieralisi
2020-07-15 9:15 ` Lorenzo Pieralisi
2020-07-21 14:59 ` Bjorn Helgaas
2020-07-27 6:06 ` [EXT] " Makarand Pawagi
2020-06-19 8:20 ` [PATCH v2 04/12] ACPI/IORT: Remove useless PCI bus walk Lorenzo Pieralisi
2020-06-19 8:20 ` [PATCH v2 05/12] ACPI/IORT: Add an input ID to acpi_dma_configure() Lorenzo Pieralisi
2020-07-09 9:35 ` Lorenzo Pieralisi
2020-07-15 9:13 ` Lorenzo Pieralisi
2020-07-28 12:48 ` Lorenzo Pieralisi
2020-07-28 13:00 ` Rafael J. Wysocki
2020-06-19 8:20 ` [PATCH v2 06/12] of/iommu: Make of_map_rid() PCI agnostic Lorenzo Pieralisi
2020-06-22 13:26 ` Joerg Roedel
2020-07-13 23:57 ` Rob Herring
2020-06-19 8:20 ` [PATCH v2 07/12] of/device: Add input id to of_dma_configure() Lorenzo Pieralisi
2020-06-30 21:50 ` Rob Herring
2020-06-19 8:20 ` [PATCH v2 08/12] dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus Lorenzo Pieralisi
2020-06-30 21:55 ` Rob Herring
2020-06-19 8:20 ` [PATCH v2 09/12] of/irq: make of_msi_map_get_device_domain() bus agnostic Lorenzo Pieralisi
2020-06-30 21:50 ` Rob Herring
2020-06-19 8:20 ` [PATCH v2 10/12] of/irq: Make of_msi_map_rid() PCI " Lorenzo Pieralisi
2020-06-30 21:56 ` Rob Herring
2020-06-19 8:20 ` [PATCH v2 11/12] bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver Lorenzo Pieralisi
2020-07-15 13:05 ` Marc Zyngier
2020-06-19 8:20 ` [PATCH v2 12/12] bus: fsl-mc: Add ACPI support for fsl-mc Lorenzo Pieralisi
2020-07-01 16:55 ` Laurentiu Tudor
2020-07-09 9:19 ` Lorenzo Pieralisi
2020-07-09 9:26 ` [EXT] " Makarand Pawagi
2020-07-09 10:14 ` Laurentiu Tudor
2020-07-09 10:37 ` Makarand Pawagi
2020-07-09 10:39 ` Laurentiu Tudor
2020-07-09 10:47 ` Diana Craciun OSS
2020-07-09 10:52 ` Makarand Pawagi
2020-07-15 10:06 ` Lorenzo Pieralisi
2020-07-16 3:23 ` Makarand Pawagi
2020-07-16 7:57 ` Marc Zyngier
2020-07-20 16:54 ` [PATCH v2 00/12] ACPI/OF: Upgrade MSI/IOMMU ID mapping APIs Lorenzo Pieralisi
2020-07-21 4:28 ` [EXT] " Makarand Pawagi
2020-07-28 17:01 ` Catalin Marinas
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