PCMCIA fun

[Matthew Wilcox]

On Thu, Mar 18, 2004 at 11:50:48AM +0100, Richard Zidlicky wrote:
> so far, every time I stumbled over a readl in a driver it was a missing
> CONFIG_PCI.

It's perfectly legal to ioremap() ISA memory and call readl() on it.
If you don't believe me, see Linus' words on the matter:

--- begin quopte from Documentation/IO-mapping.txt ---
There is a completely different type of memory too, and that's the "shared
memory" on the PCI or ISA bus. That's generally not RAM (although in the case
of a video graphics card it can be normal DRAM that is just used for a frame
buffer), but can be things like a packet buffer in a network card etc. 

This memory is called "PCI memory" or "shared memory" or "IO memory" or
whatever, and there is only one way to access it: the readb/writeb and
related functions.
--- end quote ---

(ok, this document isn't quite up to date, but this is the clear intention
from reading the rest of the file).

-- 
"Next the statesmen will invent cheap lies, putting the blame upon 
the nation that is attacked, and every man will be glad of those
conscience-soothing falsities, and will diligently study them, and refuse
to examine any refutations of them; and thus he will by and by convince 
himself that the war is just, and will thank God for the better sleep 
he enjoys after this process of grotesque self-deception." -- Mark Twain