From ae374c57afeb7c07a5a491c273b94aa05427cd70 Mon Sep 17 00:00:00 2001 From: Diana Craciun Date: Fri, 19 Jun 2020 09:20:10 +0100 Subject: of/irq: make of_msi_map_get_device_domain() bus agnostic [ Upstream commit 6f881aba01109a01a43e4f135673c19190f61133 ] 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 Reviewed-by: Rob Herring Acked-by: Bjorn Helgaas # pci/msi.c Cc: Bjorn Helgaas Cc: Rob Herring Cc: Marc Zyngier Link: https://lore.kernel.org/r/20200619082013.13661-10-lorenzo.pieralisi@arm.com Signed-off-by: Catalin Marinas Stable-dep-of: d79972789d17 ("of: dynamic: Fix of_reconfig_get_state_change() return value documentation") Signed-off-by: Sasha Levin --- 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 cc863cdd5cc7..392d2ecf7dc8 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1624,7 +1624,7 @@ 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; } -- cgit v1.2.3