arch/sh/drivers/pci/Kconfig

   1 config PCI
   2         bool "PCI support"
   3         help
   4           Find out whether you have a PCI motherboard. PCI is the name of a
   5           bus system, i.e. the way the CPU talks to the other stuff inside
   6           your box. If you have PCI, say Y, otherwise N.
   7
   8           The PCI-HOWTO, available from
   9           <http://www.tldp.org/docs.html#howto>, contains valuable
  10           information about which PCI hardware does work under Linux and which
  11           doesn't.
  12
  13 config SH_PCIDMA_NONCOHERENT
  14         bool "Cache and PCI noncoherent"
  15         depends on PCI
  16         default y
  17         help
  18           Enable this option if your platform does not have a CPU cache which
  19           remains coherent with PCI DMA. It is safest to say 'Y', although you
  20           will see better performance if you can say 'N', because the PCI DMA
  21           code will not have to flush the CPU's caches. If you have a PCI host
  22           bridge integrated with your SH CPU, refer carefully to the chip specs
  23           to see if you can say 'N' here. Otherwise, leave it as 'Y'.
  24
  25 # This is also board-specific
  26 config PCI_AUTO
  27         bool
  28         depends on PCI
  29         default y
  30
  31 config PCI_AUTO_UPDATE_RESOURCES
  32         bool
  33         depends on PCI_AUTO
  34         default y if !SH_DREAMCAST
  35         help
  36           Selecting this option will cause the PCI auto code to leave your
  37           BAR values alone. Otherwise they will be updated automatically. If
  38           for some reason, you have a board that simply refuses to work
  39           with its resources updated beyond what they are when the device
  40           is powered up, set this to N. Everyone else will want this as Y.
  41