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authorLiviu Dudau <Liviu.Dudau@arm.com>2014-09-29 15:29:30 +0100
committerBjorn Helgaas <bhelgaas@google.com>2014-09-30 17:08:57 -0600
commit8b921acfeffdb0b45085da862fc301a2d25ed2cf (patch)
tree4772e01279a51f92b80f22b1a5f57356c08b9bdc /include/linux
parentcbe4097f8ae699ebbdaf8c95ecab38d47e0bd5da (diff)
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 <Liviu.Dudau@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> CC: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/pci.h3
1 files changed, 3 insertions, 0 deletions
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;