[parisc-linux] EISA support

MichaelS.Zick MichaelS.Zick
Wed, 10 Oct 2001 03:32:09 -0500


On Wednesday 10 October 2001 01:24 am, Matthew Wilcox wrote:
> Anyone want to review a patch that makes EISA work?  
>
>  * I decided that to support old drivers, EISA port numbers should be
>    between 0-0xffff, so I reserved bus number 0 for EISA.  This involved
>    messing with inb/outb in pci.c.
>
Willy,

A comment, for your consideration:

Old ISA boards only do a 10-bit decode and it is a frequent occurance
that old drivers don't "clean up" the unused high 6 bits.

Would it be reasonable to mask port numbers to 10 bits for ISA in the
inb/outb routines?

Mike