cvs commit: src/sys/i386/pci pci_bus.c

[Warner Losh]

imp         2004-10-06 07:22:58 UTC

  FreeBSD src repository

  Modified files:
    sys/i386/pci         pci_bus.c 
  Log:
  For legacy PCI bridges, limit memory allocation to the top 32MB of
  RAM.  Many older, legacy bridges only allow allocation from this
  range.  This only appies to devices who don't have their memory
  assigned by the BIOS (since we allocate the ranges so assigned
  exactly), so should have minimal impact.
  
  Hoewver, for CardBus bridges (cbb), they rarely get the resources
  allocated by the BIOS, and this patch helps them greatly.  Typically
  the 'bad Vcc' messages are caused by this problem.
  
  Revision  Changes    Path
  1.113     +24 -4     src/sys/i386/pci/pci_bus.c