to list all the devices in freebsd &definition analyse

From: kylin (fierykylin_at_gmail.com)
Date: 11/27/05

  • Next message: Matthew Hagerty: "Re: Running a shell script on becoming the CARP master?" 
    Date: Sun, 27 Nov 2005 10:55:55 +0800
To: freebsd-questions@freebsd.org, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>

    I
    i can use pciconf in freebsd to list the pci device ,but how to list
    the device tree in freeebsd?
    II
    i got some anornymous definition on devclass driver and device that
    differ from the current man page
    i think they seems reasonable but how can devclass Represents a bus
    or leaf device driver while driver still Represents a bus or
    leaf-level end-device driver ?
    and device is just a instance of bus or (leaf) end-device.??
    is it oop? can the disigner of the arch show us a word?:)

    devclass
    Represents a bus or leaf device driver, e.g. pci_devclass (PCI bus),
    ahc_devclass (Adaptec SCSI host-bus adapter). It contains a list of
    drivers that belong to it. At run-time it also has a list populated by
    device instances of this class indexed by unit numbers.
    driver
    Represents a bus or leaf-level end-device driver. Each driver forms a
    devclass. All drivers are attached to single parent devclass (with the
    exception of root_devclass). Drivers have list of methods/operations
    e.g. probe/attach that are also inherited by it's instance devices.
    device
    Represents an instance of bus or (leaf) end-device. All devices have
    unique unit numbers in class to which they belong. Each device has one
    parent and may have a list of children. Devices inherit their
    operations and class from driver to which they belong. Device can be
    in any of the states as defined in device_state_t below 

    --
we who r about to die,salute u!
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  • Next message: Matthew Hagerty: "Re: Running a shell script on becoming the CARP master?"

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