Date: Wed, 11 Apr 2007 20:48:04 +0900 From: takawata@jp.freebsd.org To: Alan Garfield <alan@fromorbit.com> Cc: acpi@freebsd.org, hackers@freebsd.org Subject: Re: Resources and ACPI Message-ID: <200704111148.l3BBm47D024911@sana.init-main.com> In-Reply-To: Your message of "Wed, 11 Apr 2007 21:24:54 %2B1000." <461CC586.5060507@fromorbit.com>
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In message <461CC586.5060507@fromorbit.com>, Alan Garfield さんいわく:
>takawata@jp.freebsd.org wrote:
>>> If the resources are allocated how do I access/see them?
>>
>> sc->sc_rid1 = 0;
>> sc->sc_res1 = bus_alloc_resource_any(self, SYS_RES_IOPORT, &sc->sc_rid,
>RF_ACTIVE);
>> sc->sc_rid2 = 0;
Oops!
sc->sc_rid2 = 1;
>> sc->sc_res2 = bus_alloc_resource_any(self, SYS_RES_IOPORT, &sc->sc_rid,
>RF_ACTIVE);
>> value_af = bus_space_read_8(rman_get_bustag(sc->sc_res2), rman_get_bus
>handle(sc->sc_res2), 1);
>
>Thanks for this, but how does on tell which resources have been
>allocated to which other than manually specifying them with
>bus_alloc_resource()?
Resource manager will do it. Device driver for a PnP aware bus will set
resource location for each device under the bus. At that time, the resource
is not allocated and activated. Then a device driver for a child device
will allocate bus resource. rid parameter tells the order of resource you
want to get.
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