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parisc: Use generic pci_mmap_resource_range()

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Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
David Woodhouse 2017-04-12 13:26:04 +01:00 committed by Bjorn Helgaas
parent 903bdbe271
commit 6a94ca14c3
2 changed files with 1 additions and 29 deletions
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1
arch/parisc/include/asm/pci.h
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@ -200,5 +200,6 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
}
#define HAVE_PCI_MMAP
#define ARCH_GENERIC_PCI_MMAP_RESOURCE
#endif /* __ASM_PARISC_PCI_H */

29
arch/parisc/kernel/pci.c
View File

@ -227,35 +227,6 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
return start;
}
int pci_mmap_page_range(struct pci_dev *dev, int bar,
struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine)
{
unsigned long prot;
/*
* I/O space can be accessed via normal processor loads and stores on
* this platform but for now we elect not to do this and portable
* drivers should not do this anyway.
*/
if (mmap_state == pci_mmap_io)
return -EINVAL;
if (write_combine)
return -EINVAL;
/*
* Ignore write-combine; for now only return uncached mappings.
*/
prot = pgprot_val(vma->vm_page_prot);
prot |= _PAGE_NO_CACHE;
vma->vm_page_prot = __pgprot(prot);
return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
vma->vm_end - vma->vm_start, vma->vm_page_prot);
}
/*
* A driver is enabling the device. We make sure that all the appropriate
* bits are set to allow the device to operate as the driver is expecting.