diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2017-04-12 15:26:07 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-04-20 16:47:47 +0300 |
| commit | 5c2d5ce2ab4bd716b2125f15b2e0879143ac0563 (patch) | |
| tree | 3b1f3e56c1a59c3390518e64e73bf548d51cbbf4 /arch/x86 | |
| parent | 69c701ec1f97315dc0f482699f370887448e150e (diff) | |
| download | linux-5c2d5ce2ab4bd716b2125f15b2e0879143ac0563.tar.xz | |
x86/PCI: Use generic pci_mmap_resource_range()
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/pci.h | 1 | ||||
| -rw-r--r-- | arch/x86/pci/i386.c | 48 |
2 files changed, 1 insertions, 48 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index 734cc9411b3a..f513cc231151 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -104,6 +104,7 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); #define HAVE_PCI_MMAP #define arch_can_pci_mmap_wc() pat_enabled() +#define ARCH_GENERIC_PCI_MMAP_RESOURCE #ifdef CONFIG_PCI extern void early_quirks(void); diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c index 8ca5e5d9f251..68499cf82ccf 100644 --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -406,51 +406,3 @@ void __init pcibios_resource_survey(void) */ ioapic_insert_resources(); } - -static const struct vm_operations_struct pci_mmap_ops = { - .access = generic_access_phys, -}; - -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 cannot be accessed via normal processor loads and - * stores on this platform. - */ - if (mmap_state == pci_mmap_io) - return -EINVAL; - - prot = pgprot_val(vma->vm_page_prot); - - /* - * Return error if pat is not enabled and write_combine is requested. - * Caller can followup with UC MINUS request and add a WC mtrr if there - * is a free mtrr slot. - */ - if (!pat_enabled() && write_combine) - return -EINVAL; - - if (pat_enabled() && write_combine) - prot |= cachemode2protval(_PAGE_CACHE_MODE_WC); - else if (pat_enabled() || boot_cpu_data.x86 > 3) - /* - * ioremap() and ioremap_nocache() defaults to UC MINUS for now. - * To avoid attribute conflicts, request UC MINUS here - * as well. - */ - prot |= cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS); - - vma->vm_page_prot = __pgprot(prot); - - if (io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, - vma->vm_end - vma->vm_start, - vma->vm_page_prot)) - return -EAGAIN; - - vma->vm_ops = &pci_mmap_ops; - - return 0; -} |