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Re: video mem access with oskit-mach
From: |
Roland McGrath |
Subject: |
Re: video mem access with oskit-mach |
Date: |
Mon, 1 Oct 2001 17:12:17 -0400 (EDT) |
The keyboard and video questions are really quite separate,
so I am answering them in two separate threads.
I believe that everything should already be in place in Mach (both flavors)
and in the Hurd for mapping physical device memory such as the frame buffer.
mmap on /dev/mem ought to dtrt already. If not, it's a bug.
The only reason to have a more specific device for this is security,
e.g. /dev/vga that can mmap only a constrained range. We can do this by
Hurdish means if we ever care to. Theoretically one could use a remap
store on top of /dev/mem, whos runs give mostly holes and only map the
address ranges you want to allow for the frame buffer.
- video mem and keyboard access with oskit-mach, Marcus Brinkmann, 2001/10/01
- Re: video mem access with oskit-mach,
Roland McGrath <=
- Re: video mem access with oskit-mach, Marcus Brinkmann, 2001/10/01
- Re: video mem access with oskit-mach, Roland McGrath, 2001/10/02
- Re: video mem access with oskit-mach, Thomas Bushnell, BSG, 2001/10/02
- Re: video mem access with oskit-mach, Marcus Brinkmann, 2001/10/02
- Re: video mem access with oskit-mach, Roland McGrath, 2001/10/02
- Re: video mem access with oskit-mach, Marcus Brinkmann, 2001/10/02
- Re: video mem access with oskit-mach, Marcus Brinkmann, 2001/10/03
- Re: video mem access with oskit-mach, Roland McGrath, 2001/10/03
- Re: video mem access with oskit-mach, Marcus Brinkmann, 2001/10/07
- Re: video mem access with oskit-mach, Marcus Brinkmann, 2001/10/07