Date: Sat, 12 Mar 2011 20:47:58 +0100 From: Henrik Brix Andersen <brix@FreeBSD.org> To: freebsd-drivers@freebsd.org Subject: Re: Allocating resources to isab children Message-ID: <0A707516-C7D1-4441-B17B-1273B6C256B0@FreeBSD.org> In-Reply-To: <3550EA55-ADDE-40AC-9C22-1FAC441A0BC8@freebsd.org> References: <3550EA55-ADDE-40AC-9C22-1FAC441A0BC8@freebsd.org>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --Apple-Mail-9--470468019 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii On Mar 12, 2011, at 19:49, Henrik Brix Andersen wrote: > I am writing a driver for the GPIO part of the AMD CS5536 south bridge = (isab0), but have encountered a problem with resource allocation. > The GPIO address (0x6100-0x61FF) is available through PCI BAR 1 as = seen in the output from pciconf(8): >=20 > isab0@pci0:0:15:0: class=3D0x060100 card=3D0x20901022 = chip=3D0x20901022 rev=3D0x03 hdr=3D0x00 > vendor =3D 'Advanced Micro Devices (AMD)' > device =3D 'CS5536 [Geode companion] ISA' > class =3D bridge > subclass =3D PCI-ISA > bar [10] =3D type I/O Port, range 32, base 0x6000, size 8, = enabled > bar [14] =3D type I/O Port, range 32, base 0x6100, size 256, = enabled > bar [18] =3D type I/O Port, range 32, base 0x6200, size 64, = enabled > bar [20] =3D type I/O Port, range 32, base 0x9d00, size 128, = enabled > bar [24] =3D type I/O Port, range 32, base 0x9c00, size 64, = enabled >=20 > However, when I try to allocate the I/O port resource in the = minimalistic example below, I always get 0x1100-0x1100, not = 0x6100-0x61FF? >=20 > I have modelled the code after recommendation from John Baldwin in = http://lists.freebsd.org/pipermail/freebsd-acpi/2007-August/003964.html = but I must be doing something wrong... Ahh, I just re-read Johns recommendation and realized that isab does not = support proxying resource allocations (yet). I will try adding that = functionality and report back. Brix --=20 Henrik Brix Andersen <brix@FreeBSD.org> --Apple-Mail-9--470468019 content-type: application/pgp-signature; x-mac-type=70674453; name=PGP.sig content-description: This is a digitally signed message part content-disposition: inline; filename=PGP.sig content-transfer-encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) iEYEARECAAYFAk17ze8ACgkQv+Q4flTiePizagCglAqvwEjTsO4NEdi8YNz6CQQc 7m4An3uvISR6w/lYA5AVg+E4aa5varoe =9/Uz -----END PGP SIGNATURE----- --Apple-Mail-9--470468019--
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