From owner-freebsd-hackers@FreeBSD.ORG  Mon Nov 28 04:36:53 2005
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Message-ID: <87ab37ab0511272036t60b22769sff7a201d4d3cf8f9@mail.gmail.com>
Date: Mon, 28 Nov 2005 12:36:50 +0800
From: kylin <fierykylin@gmail.com>
To: "M. Warner Losh" <imp@bsdimp.com>, freebsd-hackers@freebsd.org
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Cc: 
Subject: Re: to list all the devices in freebsd &definition analyse
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On 11/28/05, M. Warner Losh <imp@bsdimp.com> wrote:
> In message: <87ab37ab0511261855lfc5d062h7d394f25bcd00ec0@mail.gmail.com>
>            kylin <fierykylin@gmail.com> writes:
> : i can use pciconf in freebsd to list the pci device ,but how to list
> : the device tree in freeebsd?
>
> devinfo -v
devinfo is different with pciconf
devinfo depends on the sysctl mechanism while pciconf ioctl the
/dev/pci who will directly read the pci configuration space

> devclass is the information about all instances of the device.
> device_t is an instance of the device.  The only difference between a
> bus and a device is that a bus has children.
>
> Warner
>
but pcib and cbb still have pci or cardbus as there children ,and pcib
and cbb is bridge rather than bus :(
i am puzzle with the definition:(

--
we who r about to die,salute u!