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Date: Sun, 22 May 2011 19:20:39 +0200
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From: "deeptech71@gmail.com" <deeptech71@gmail.com>
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Subject: Re: pcib allocation failure
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On Sat, May 21, 2011 at 3:59 PM, deeptech71@gmail.com
<deeptech71@gmail.com> wrote:
> On Thu, May 19, 2011 at 11:35 PM, John Baldwin <jhb@freebsd.org> wrote:
>> Index: pci_pci.c
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> --- pci_pci.c =A0 (revision 222093)
>> +++ pci_pci.c =A0 (working copy)
>> @@ -162,8 +162,13 @@ pcib_write_windows(struct pcib_softc *sc, int mask
>> =A0{
>> =A0 =A0 =A0 =A0device_t dev;
>> =A0 =A0 =A0 =A0uint32_t val;
>> + =A0 =A0 =A0 uint16_t cmd;
>>
>> =A0 =A0 =A0 =A0dev =3D sc->dev;
>> + =A0 =A0 =A0 cmd =3D pci_read_config(dev, PCIR_COMMAND, 2);
>> + =A0 =A0 =A0 if (cmd & (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN))
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 pci_write_config(dev, PCIR_COMMAND,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 cmd & ~(PCIM_CMD_PORTEN | PCIM_CMD=
_MEMEN), 2);
>> =A0 =A0 =A0 =A0if (sc->io.valid && mask & WIN_IO) {
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0val =3D pci_read_config(dev, PCIR_IOBASEL=
_1, 1);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if ((val & PCIM_BRIO_MASK) =3D=3D PCIM_BR=
IO_32) {
>> @@ -192,6 +197,8 @@ pcib_write_windows(struct pcib_softc *sc, int mask
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0pci_write_config(dev, PCIR_PMBASEL_1, sc-=
>pmem.base >> 16, 2);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0pci_write_config(dev, PCIR_PMLIMITL_1, sc=
->pmem.limit >> 16, 2);
>> =A0 =A0 =A0 =A0}
>> + =A0 =A0 =A0 if (cmd & (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN))
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 pci_write_config(dev, PCIR_COMMAND, cmd, 2=
);
>> =A0}
>>
>> =A0static void
>> @@ -231,7 +238,9 @@ pcib_alloc_window(struct pcib_softc *sc, struct pc
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0w->name, (uintmax_t)w->base, (uin=
tmax_t)w->limit);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0w->base =3D max_address;
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0w->limit =3D 0;
>> +#if 0
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0pcib_write_windows(sc, w->mask);
>> +#endif
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return;
>> =A0 =A0 =A0 =A0}
>> =A0 =A0 =A0 =A0pcib_activate_window(sc, type);
>
> that seems to work.

oops, i forgot to set the AGP aperture size to 128M during testing.
that patch actually does NOT work.