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| author | Bjorn Helgaas <bhelgaas@google.com> | 2017-04-28 18:34:05 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-04-28 18:34:05 +0300 |
| commit | 0b0ee66c4f4debaaf2f07662ad20a6e89b568c1e (patch) | |
| tree | b7643509c540e0315a18f09262b942d4ebfd0e72 /include | |
| parent | 27e99676f0f15692d2b70efb8e697d9cf7091362 (diff) | |
| parent | bc636ee94501aedef744f96c57bb2e29cf21aa39 (diff) | |
| download | linux-0b0ee66c4f4debaaf2f07662ad20a6e89b568c1e.tar.xz | |
Merge branch 'pci/ioremap' into next
* pci/ioremap:
PCI: versatile: Update PCI config space remap function
PCI: keystone-dw: Update PCI config space remap function
PCI: layerscape: Update PCI config space remap function
PCI: hisi: Update PCI config space remap function
PCI: tegra: Update PCI config space remap function
PCI: xgene: Update PCI config space remap function
PCI: armada8k: Update PCI config space remap function
PCI: designware: Update PCI config space remap function
PCI: iproc-platform: Update PCI config space remap function
PCI: qcom: Update PCI config space remap function
PCI: rockchip: Update PCI config space remap function
PCI: spear13xx: Update PCI config space remap function
PCI: xilinx-nwl: Update PCI config space remap function
PCI: xilinx: Update PCI config space remap function
PCI: ECAM: Map config region with pci_remap_cfgspace()
PCI: Implement devm_pci_remap_cfgspace()
devres: fix devm_ioremap_*() offset parameter kerneldoc description
ARM: Implement pci_remap_cfgspace() interface
ARM64: Implement pci_remap_cfgspace() interface
linux/io.h: Add pci_remap_cfgspace() interface
PCI: Remove __weak tag from pci_remap_iospace()
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/io.h | 21 | ||||
| -rw-r--r-- | include/linux/pci.h | 5 |
2 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/io.h b/include/linux/io.h index 82ef36eac8a1..2195d9ea4aaa 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -90,6 +90,27 @@ void devm_memunmap(struct device *dev, void *addr); void *__devm_memremap_pages(struct device *dev, struct resource *res); +#ifdef CONFIG_PCI +/* + * The PCI specifications (Rev 3.0, 3.2.5 "Transaction Ordering and + * Posting") mandate non-posted configuration transactions. There is + * no ioremap API in the kernel that can guarantee non-posted write + * semantics across arches so provide a default implementation for + * mapping PCI config space that defaults to ioremap_nocache(); arches + * should override it if they have memory mapping implementations that + * guarantee non-posted writes semantics to make the memory mapping + * compliant with the PCI specification. + */ +#ifndef pci_remap_cfgspace +#define pci_remap_cfgspace pci_remap_cfgspace +static inline void __iomem *pci_remap_cfgspace(phys_addr_t offset, + size_t size) +{ + return ioremap_nocache(offset, size); +} +#endif +#endif + /* * Some systems do not have legacy ISA devices. * /dev/port is not a valid interface on these systems. diff --git a/include/linux/pci.h b/include/linux/pci.h index 7e83db5440ec..9a19a8fd4de3 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1183,6 +1183,11 @@ 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) { |