Re: [Linux-fbdev-devel] how to drop access to an ioremapped area ?

[Ghozlane T. <gt...@pr...>]

----- Original Message -----
From: "James Simmons" <jsi...@tr...>
Subject: Re: [Linux-fbdev-devel] how to drop access to an ioremapped area ?

> > I'm looking for  a way to somehow "drop" all access to a specific
ioremaped
> > area ,
> > for a time , and then "reenable" it .. is there a way to do something
like
> > that ?
>
> The best thing you could do right now is just convert the glide
> library to use the mmio region of your fbdev device.

should be easy, specificaly with the /dev/3dfx device (basicaly if i'm not
wrong,
it just detects a voodoo board and ioremap the board's mem before giving
the info to glide )

> As for access use a
> userland lock. Not very secure but it is a hack to get it going.

what if i make glide use a new VC , a la X, and then pray that userland apps
will play nicely when changing the console, by stopping every write ?
how does fb apps (from X to fbtv) cope with VC switches ?

ghoz