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

John Baldwin jhb at
Tue Aug 5 18:24:49 UTC 2008

jhb         2008-08-05 18:24:41 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/pci          pci.c 
  SVN rev 181333 on 2008-08-05 18:24:41Z by jhb
  If the kernel fails to allocate resources for the initial value of a BAR
  for a PCI device during the boot-time probe of the parent PCI bus, then
  zero the BAR and clear the resource list entry for that BAR.  This forces
  the PCI bus driver to request a valid resource range from the parent bridge
  driver when the device driver tries to allocate the BAR.  Similarly, if the
  initial value of a BAR is a valid range but it is > 4GB and the current OS
  only has 32-bit longs, then do a full teardown of the initial value of the
  BAR to force a reallocation.
  Reviewed by:    imp
  MFC after:      1 week
  Revision  Changes    Path
  1.359     +33 -13    src/sys/dev/pci/pci.c

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