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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c49b8fc26e
Add of_pci_dma_configure() to allow updating the DMA configuration of the PCI device using the configuration from DT of the parent of the root bridge device. Use the newly added APIs pci_get/put_host_bridge_device() for implementing this. [bhelgaas: fold in fix for host bridges with no parent OF device] Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> (AMD Seattle) Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Rob Herring <robh+dt@kernel.org> Acked-by: Will Deacon <will.deacon@arm.com> CC: Joerg Roedel <joro@8bytes.org> CC: Grant Likely <grant.likely@linaro.org> CC: Russell King <linux@arm.linux.org.uk> CC: Arnd Bergmann <arnd@arndb.de>
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
#ifndef __OF_PCI_H
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#define __OF_PCI_H
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#include <linux/pci.h>
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#include <linux/msi.h>
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struct pci_dev;
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struct of_phandle_args;
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struct device_node;
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#ifdef CONFIG_OF
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int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq);
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struct device_node *of_pci_find_child_device(struct device_node *parent,
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unsigned int devfn);
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int of_pci_get_devfn(struct device_node *np);
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int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
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int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
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int of_get_pci_domain_nr(struct device_node *node);
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void of_pci_dma_configure(struct pci_dev *pci_dev);
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#else
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static inline int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq)
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{
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return 0;
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}
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static inline struct device_node *of_pci_find_child_device(struct device_node *parent,
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unsigned int devfn)
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{
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return NULL;
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}
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static inline int of_pci_get_devfn(struct device_node *np)
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{
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return -EINVAL;
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}
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static inline int
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of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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return 0;
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}
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static inline int
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of_pci_parse_bus_range(struct device_node *node, struct resource *res)
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{
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return -EINVAL;
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}
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static inline int
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of_get_pci_domain_nr(struct device_node *node)
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{
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return -1;
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}
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static inline void of_pci_dma_configure(struct pci_dev *pci_dev) { }
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#endif
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#if defined(CONFIG_OF_ADDRESS)
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int of_pci_get_host_bridge_resources(struct device_node *dev,
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unsigned char busno, unsigned char bus_max,
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struct list_head *resources, resource_size_t *io_base);
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#endif
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#if defined(CONFIG_OF) && defined(CONFIG_PCI_MSI)
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int of_pci_msi_chip_add(struct msi_controller *chip);
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void of_pci_msi_chip_remove(struct msi_controller *chip);
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struct msi_controller *of_pci_find_msi_chip_by_node(struct device_node *of_node);
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#else
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static inline int of_pci_msi_chip_add(struct msi_controller *chip) { return -EINVAL; }
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static inline void of_pci_msi_chip_remove(struct msi_controller *chip) { }
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static inline struct msi_controller *
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of_pci_find_msi_chip_by_node(struct device_node *of_node) { return NULL; }
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#endif
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#endif
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