Re: 2.3 wish: integrate pcmcia into mainstream kernel

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 4 Jun 1999 00:05:26 +0100 (BST)

> Welcome to my world, Linus. These are MAJOR pains. Actually, for me,
> since DMA over PCMCIA is so hopelessly broken as to be irrelevant, I
> find that #1 is the biggest pain, followed by #4, followed by #3. On
> #3, a 32-bit address space is big enough that if you just close your
> eyes and hope for the best, things usually work out ok, sadly enough.

#3 I have to fix anyway. And just guessing won't work for I2O because
it could easily be 4Mb, and the GART could be 64Mb or so.

> Support for ISA PnP hardware isn't the issue. What I need is support
> for PnP BIOS calls: the calls to retrieve PCI interrupt routing
> information and hardware resource tables, specifically.

Where are these documented BTW ?

> And IO ports? I try probing for "free" IO space, because again, the
> resources known to the Linux kernel are too incomplete to be depended

Is that down to Linux devices not claiming space, or to the general issue
of stuff hiding ?

Alan

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