From 8b921acfeffdb0b45085da862fc301a2d25ed2cf Mon Sep 17 00:00:00 2001 From: Liviu Dudau Date: Mon, 29 Sep 2014 15:29:30 +0100 Subject: PCI: Add pci_remap_iospace() to map bus I/O resources Add pci_remap_iospace() to map bus I/O resources into the CPU virtual address space. Architectures with special needs may provide their own version, but most should be able to use this one. This function is useful for PCI host bridge drivers that need to map the PCI I/O resources into virtual memory space. [bhelgaas: phys_addr description, drop temporary "err" variable] Signed-off-by: Liviu Dudau Signed-off-by: Bjorn Helgaas Reviewed-by: Rob Herring Reviewed-by: Catalin Marinas CC: Arnd Bergmann --- include/linux/pci.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux/pci.h') diff --git a/include/linux/pci.h b/include/linux/pci.h index 150da2d644e7..b4995fdfffb1 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1100,6 +1100,9 @@ int __must_check pci_bus_alloc_resource(struct pci_bus *bus, resource_size_t), void *alignf_data); + +int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr); + static inline dma_addr_t pci_bus_address(struct pci_dev *pdev, int bar) { struct pci_bus_region region; -- cgit v1.2.1