pci(7)                         DG/UX R4.11MU05                        pci(7)


NAME
       pci - Integrated PCI host bridge (Intel only)

SYNOPSIS
       pci([bridge-num])

DESCRIPTION
       The pci host bridge allows an AViiON system to access Peripheral
       Component Interconnect (PCI) devices.  The bridge links a host's
       system bus to a PCI bus.

       To access a PCI device via the interface, you must specify the
       appropriate pci bridge as the parent bus device within the name of a
       PCI device to be configured (e.g., npsc or dpen).  See the pci_bus(7)
       man page for a list of the supported child PCI devices; each man page
       listed is the name of PCI device driver.

       To configure pci devices, you must add to the DG/UX system
       configuration file one or more device name entries that contain one
       of the forms described in the synopsis above.  The parameters in a
       device name have the following meanings:

       ·   The bridge-num parameter is a hexadecimal number in the range 0
           through 1 which distinguishes the various instances of the
           controller that are available.  The default value for bridge-num
           is 0.

EXAMPLES
       The following entry in a DG/UX configuration file configures the DEC
       PCI Ethernet controller on PCI device number 3 of the first
       Integrated PCI host bridge:

            dpen(pci(0),3)


       The following entry in a DG/UX configuration file configures the SCSI
       disk on SCSI ID 2 of the Symbios PCI SCSI adapter which is on PCI
       device number 4 of the second Integrated PCI host bridge:

            sd(npsc(pci(1),4),2)



       For more information about DG/UX device configuration, refer to
       "Writing a Device Driver" in Programming in the DG/UX Kernel
       Environment.

SEE ALSO
       pci_bus(7).


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