viapropm doesnt like sys/dev/pci.c rev 1.214

Nicolas Souchu nsouch at free.fr
Tue Jun 3 22:16:07 PDT 2003


On Tue, Jun 03, 2003 at 10:54:30AM -0700, David P. Reese Jr. wrote:

[...]
> : The datasheet states that the command bits are RW but "fixed at 0".
> 
> A snip of code from sys/dev/pci/pci.c:pci_enable_io_method():
> 
>         pci_set_command_bit(dev, child, bit);
>         command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
>         if (command & bit)
>                 return (0);
>         device_printf(child, "failed to enable %s mapping!\n", error);
>         return (ENXIO);
> 
> Because the viapropm's command register bits will always read as zero,
> this code will always fail when trying to enable port mapping.
> 
> Whatever problems viapropm may have, it is the new pci code that prevents it
> from attaching.  It is not the fault of anything in sys/pci/viapm.c.

And I personally don't know how to fix it except by an option with an
ifdef to workaround it.

-- 
Nicholas Souchu - nsouch at free.fr - nsouch at FreeBSD.org


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