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unicore32/PCI: 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 13:26:06 +01:00 committed by Bjorn Helgaas
parent adf7bde63f
commit 69c701ec1f
2 changed files with 1 additions and 24 deletions
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1
arch/unicore32/include/asm/pci.h
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@ -17,6 +17,7 @@
#include <mach/hardware.h> /* for PCIBIOS_MIN_* */
#define HAVE_PCI_MMAP
#define ARCH_GENERIC_PCI_MMAP_RESOURCE
#endif /* __KERNEL__ */
#endif

24
arch/unicore32/kernel/pci.c
View File

@ -356,27 +356,3 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
}
return 0;
}
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 phys;
if (mmap_state == pci_mmap_io)
return -EINVAL;
phys = vma->vm_pgoff;
/*
* Mark this as IO
*/
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
if (remap_pfn_range(vma, vma->vm_start, phys,
vma->vm_end - vma->vm_start,
vma->vm_page_prot))
return -EAGAIN;
return 0;
}