cvs commit: src/sys/dev/pci pci.c

[John Baldwin]

jhb         2005-09-29 15:04:41 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/pci          pci.c 
  Log:
  - Consolidate duplicated code for assigning interrupts to PCI devices via
    routing, etc. in a static pci_assign_interrupt() function.
  - Add a sledgehammer that allows the user to override the interrupt
    assignment of any PCI device via a tunable (e.g. "hw.pci0.7.INTB=5" would
    force any functions on the pci device in slot 7 of bus 0 that use B# to
    use IRQ 5).  This should be used with great caution!  Generally, if the
    interrupt routing in use provides specific tunables (such as hard-wiring
    the IRQ for a given $PIR or ACPI PCI link device), then those should be
    used instead.  One instance where this tunable might be useful is if a
    box has an MPTable with duplicate entries for the same PCI device with
    different IRQs.
  
  MFC after:      1 week
  
  Revision  Changes    Path
  1.299     +55 -17    src/sys/dev/pci/pci.c