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author | Bjorn Helgaas <bhelgaas@google.com> | 2017-04-28 10:34:34 -0500 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-04-28 10:34:34 -0500 |
commit | 889e4dd916a1f4dc7f9e6220fed26d811e39ca71 (patch) | |
tree | ec3905e25ae15a064a51ec74c00443a5474f223f /arch/ia64/pci/pci.c | |
parent | 78f098383a7abb1eb9dfd45346773fe80a65f05a (diff) | |
parent | d9c102de2caa733c3e718e1b032cd154a9994326 (diff) |
Merge branch 'pci/resource-mmap' into next
* pci/resource-mmap:
ia64: Use generic pci_mmap_resource_range()
ia64: Remove redundant checks for WC in pci_mmap_page_range()
ia64: Remove redundant valid_mmap_phys_addr_range() from pci_mmap_page_range()
PCI: Add I/O BAR support to generic pci_mmap_resource_range()
x86/PCI: Use generic pci_mmap_resource_range()
unicore32/PCI: Use generic pci_mmap_resource_range()
sh/PCI: Use generic pci_mmap_resource_range()
parisc: Use generic pci_mmap_resource_range()
mn10300/PCI: Use generic pci_mmap_resource_range()
MIPS: PCI: Use generic pci_mmap_resource_range()
cris/PCI: Use generic pci_mmap_resource_range()
ARM/PCI: Use generic pci_mmap_resource_range()
PCI: Add pci_mmap_resource_range() and use it for ARM64
PCI: Add BAR index argument to pci_mmap_page_range()
PCI: Use BAR index in sysfs attr->private instead of resource pointer
PCI: Add arch_can_pci_mmap_io() on architectures which can mmap() I/O space
PCI: Move multiple declarations of pci_mmap_page_range() to <linux/pci.h>
PCI: Add arch_can_pci_mmap_wc() macro
xtensa/PCI: Do not mmap PCI BARs to userspace as write-through
PCI: Only allow WC mmap on prefetchable resources
PCI: Fix another sanity check bug in /proc/pci mmap
PCI: Fix pci_mmap_fits() for HAVE_PCI_RESOURCE_TO_USER platforms
Diffstat (limited to 'arch/ia64/pci/pci.c')
-rw-r--r-- | arch/ia64/pci/pci.c | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index 8f6ac2f8ae4c..4068bde623dc 100644 --- a/arch/ia64/pci/pci.c +++ b/arch/ia64/pci/pci.c @@ -418,52 +418,6 @@ pcibios_align_resource (void *data, const struct resource *res, return res->start; } -int -pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma, - enum pci_mmap_state mmap_state, int write_combine) -{ - unsigned long size = vma->vm_end - vma->vm_start; - pgprot_t prot; - - /* - * I/O space cannot be accessed via normal processor loads and - * stores on this platform. - */ - if (mmap_state == pci_mmap_io) - /* - * XXX we could relax this for I/O spaces for which ACPI - * indicates that the space is 1-to-1 mapped. But at the - * moment, we don't support multiple PCI address spaces and - * the legacy I/O space is not 1-to-1 mapped, so this is moot. - */ - return -EINVAL; - - if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size)) - return -EINVAL; - - prot = phys_mem_access_prot(NULL, vma->vm_pgoff, size, - vma->vm_page_prot); - - /* - * If the user requested WC, the kernel uses UC or WC for this region, - * and the chipset supports WC, we can use WC. Otherwise, we have to - * use the same attribute the kernel uses. - */ - if (write_combine && - ((pgprot_val(prot) & _PAGE_MA_MASK) == _PAGE_MA_UC || - (pgprot_val(prot) & _PAGE_MA_MASK) == _PAGE_MA_WC) && - efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start)) - vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); - else - vma->vm_page_prot = prot; - - if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, - vma->vm_end - vma->vm_start, vma->vm_page_prot)) - return -EAGAIN; - - return 0; -} - /** * ia64_pci_get_legacy_mem - generic legacy mem routine * @bus: bus to get legacy memory base address for |