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powerpc/PCI: Add legacy PCI access via sysfs

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This patch adds support for legacy_io and legacy_mem files in
bus class directories in sysfs for powerpc

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Benjamin Herrenschmidt
2008-10-14 11:55:31 +11:00
committed by Jesse Barnes
parent f19aeb1f36
commit e9f82cb750
3 changed files with 153 additions and 1 deletions
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11
arch/powerpc/include/asm/pci.h
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@@ -123,6 +123,16 @@ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
#define HAVE_PCI_MMAP 1
extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
size_t count);
extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
size_t count);
extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
struct vm_area_struct *vma,
enum pci_mmap_state mmap_state);
#define HAVE_PCI_LEGACY 1
#if defined(CONFIG_PPC64) || defined(CONFIG_NOT_COHERENT_CACHE)
/*
* For 64-bit kernels, pci_unmap_{single,page} is not a nop.
@@ -226,5 +236,6 @@ extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
extern void pcibios_do_bus_setup(struct pci_bus *bus);
extern void pcibios_fixup_of_probed_bus(struct pci_bus *bus);
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_PCI_H */