Date: Thu, 26 Feb 2004 11:26:31 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: des@des.no Cc: arch@freebsd.org Subject: Re: per-device sysctls Message-ID: <20040226.112631.45877306.imp@bsdimp.com> In-Reply-To: <xzpk729lnq7.fsf@dwp.des.no> References: <xzpk729lnq7.fsf@dwp.des.no>
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In message: <xzpk729lnq7.fsf@dwp.des.no>
des@des.no (Dag-Erling Sm=F8rgrav) writes:
: I also plan to add entries for device IDs, irq /
: drq lines etc., but this will require additional bus-specific code an=
d
: is not yet implemented.
You don't need bus specific code for any of these things, per se.
There's already two routines that busses can (and mostly do)
implement. The irq/drq/resource stuff is already recorded elsewhere
and can be dug out, just like devinfo does. The existing interface to
get location and pnpinfo from the bus are:
#
# Returns the pnp info for this device. Return it as a string. If the=
# string is insufficient for the storage, then return EOVERFLOW.
#
METHOD int child_pnpinfo_str {
device_t _dev;
device_t _child;
char *_buf;
size_t _buflen;
};
#
# Returns the location for this device. Return it as a string. If the=
# string is insufficient for the storage, then return EOVERFLOW.
#
METHOD int child_location_str {
device_t _dev;
device_t _child;
char *_buf;
size_t _buflen;
};
Warner
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