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Merge branch 'pci/resource-mmap' into next

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* 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
This commit is contained in:
Bjorn Helgaas
2017-04-28 10:34:34 -05:00
parent 78f098383a d9c102de2c
commit 889e4dd916
34 changed files with 238 additions and 385 deletions
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30
include/linux/pci.h
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@@ -1617,6 +1617,36 @@ static inline int pci_get_new_domain_nr(void) { return -ENOSYS; }
#include <asm/pci.h>
/* These two functions provide almost identical functionality. Depennding
* on the architecture, one will be implemented as a wrapper around the
* other (in drivers/pci/mmap.c).
*
* pci_mmap_resource_range() maps a specific BAR, and vm->vm_pgoff
* is expected to be an offset within that region.
*
* pci_mmap_page_range() is the legacy architecture-specific interface,
* which accepts a "user visible" resource address converted by
* pci_resource_to_user(), as used in the legacy mmap() interface in
* /proc/bus/pci/.
*/
int pci_mmap_resource_range(struct pci_dev *dev, int bar,
struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine);
int pci_mmap_page_range(struct pci_dev *pdev, int bar,
struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine);
#ifndef arch_can_pci_mmap_wc
#define arch_can_pci_mmap_wc() 0
#endif
#ifndef arch_can_pci_mmap_io
#define arch_can_pci_mmap_io() 0
#define pci_iobar_pfn(pdev, bar, vma) (-EINVAL)
#else
int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma);
#endif
#ifndef pci_root_bus_fwnode
#define pci_root_bus_fwnode(bus) NULL
#endif