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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2017-04-19 17:48:55 +0100
committerBjorn Helgaas <bhelgaas@google.com>2017-04-24 13:53:13 -0500
commit490cb6ddb17df5ef5f5eb33c9a34f3033b31c204 (patch)
tree7c3b684679bae3d890199b330bb18b3c744b7497 /include/linux/pci.h
parent6524754eff305760d0b31dac468e78057a56f47e (diff)
PCI: Implement devm_pci_remap_cfgspace()
The introduction of the pci_remap_cfgspace() interface allows PCI host controller drivers to map PCI config space through a dedicated kernel interface. Current PCI host controller drivers use the devm_ioremap_*() devres interfaces to map PCI configuration space regions so in order to update them to the new pci_remap_cfgspace() mapping interface a new set of devres interfaces should be implemented so that PCI host controller drivers can make use of them. Introduce two new functions in the PCI kernel layer and Devres documentation: - devm_pci_remap_cfgspace() - devm_pci_remap_cfg_resource() so that PCI host controller drivers can make use of them to map PCI configuration space regions. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index eb3da1a04e6c..70534d66d18a 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1199,6 +1199,11 @@ unsigned long pci_address_to_pio(phys_addr_t addr);
phys_addr_t pci_pio_to_address(unsigned long pio);
int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr);
void pci_unmap_iospace(struct resource *res);
+void __iomem *devm_pci_remap_cfgspace(struct device *dev,
+ resource_size_t offset,
+ resource_size_t size);
+void __iomem *devm_pci_remap_cfg_resource(struct device *dev,
+ struct resource *res);
static inline pci_bus_addr_t pci_bus_address(struct pci_dev *pdev, int bar)
{