Date: Fri, 01 Sep 2000 12:39:57 -0700 From: Mike Smith <msmith@freebsd.org> To: Ron Rosson <insane@lunatic.oneinsane.net> Cc: wpaul@freebsd.org, mobile@freebsd.org Subject: Re: USB Message-ID: <200009011939.MAA05534@mass.osd.bsdi.com> In-Reply-To: Your message of "Fri, 01 Sep 2000 08:56:24 PDT." <20000901085624.A8328@lunatic.oneinsane.net>
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> >
> > Can you instead give me the output of 'pciconf -r pci0:7:2 4' ? I would
> > hazard a guess that the least significant bit will be zero, indicating
> > that I/O port access is not enabled for this device, and we don't honour
> > the register allocation in that case.
> >
>
> mental# pciconf -r pci0:7:2 4
> 0x02800000
>
> Hope this helps
Yup. Your PCI BIOS is buggy; it's assigning resources to the device but
not bothering to set the 'enable' bit for the resource type.
You can try hacking around this for now, Bill will probably fix it
properly in a few days. In /sys/pci/pci.c around line 1080 you have this
code (without the line numbers, obviously 8):
1082 if (type == SYS_RES_IOPORT && !pci_porten(cfg))
1083 return 1;
1084 if (type == SYS_RES_MEMORY && !pci_memen(cfg))
1085 return 1;
Change it to read:
if (type == SYS_RES_IOPORT && !pci_porten(cfg))
pci_cfgwrite(cfg, PCIR_COMMAND, cfg->cmdreg | PCIM_CMD_PORTEN, 2);
if (type == SYS_RES_MEMORY && !pci_memen(cfg))
pci_cfgwrite(cfg, PCIR_COMMAND, cfg->cmdreg | PCIM_CMD_MEMEN, 2);
This ignores the fact that the BIOS hasn't enabled the relevant access
types, and takes care of it instead. Let me know how you go with this.
Regards,
--
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also. But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view. [Dr. Fritz Todt]
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