Linux Framebuffer Driver for the 3DLabs Permedia3 chipset.

Author

This driver is still very experimental :

it's known to work on the Formac ProFormance III board
it has *not* been thoroughly tested on this board
it has *not* been tested *at all* on *any* other board ; you've been warned !
it seems to work fine with the latest (4.0.99.1) CVS Xfree86 driver ('glint')
the kernel goes down in flames when trying to use XFree86 'fbdev' driver. OOOOOps.
*no* support for multiple board
*no* support for multiple chip per board (like Appian boards)
*no* acceleration at all
it has only been tested with linux-2.2.18, and a little with a ppc-patched linux-2.4.2-pre4
it works OK with OpenFirmware
resolution switching (via fbset) seems to work

Assuming LINUXSRC is the path to the top of your linux kernel source tree:

put the files pm3fb.h and pm3fb.c in $LINUXSRC/driver/video
patch linux-2.2.18 (or 2.4.x) with the included patch : cd $LINUXSRC ; patch -p1 < linux-2.2.18-pm3.patch or cd $LINUXSRC ; patch -p1 < linux-2.4.x-pm3.patch
add the driver to your kernel (you'll need CONFIG_EXPERIMENTAL and CONFIG_PCI)
compile, install, reboot - and enjoy if hell doesn't break loose.
You can add an option : "video=pm3fb,mode:XXXXX" where XXXXX is one of the valid mode described in pm3fb.c (modebase). Default is 800x600-75 w/o OpenFirmware, whatever was available upon boot with OF.

Tue Feb 27 17:31:12 CET 2001, v 1.0.6: fixes boot-time mode select, add more default mode

Tue Feb 27 14:01:36 CET 2001, v 1.0.5: fixes (1.0.4 was broken for 2.2), cleaning up

Mon Feb 26 23:17:36 CET 2001, v 1.0.4: preliminary 2.4.x support, dropped (useless on pm3) partial product, more OF fix

Mon Feb 26 20:59:05 CET 2001, v 1.0.3: No more shadow register (and wasted memory), endianess fix, use OF-preset resolution by default

Wed Feb 21 22:09:30 CET 2001, v 1.0.2: Code cleaning for future multiboard support, better OF support, bugs fix

Wed Feb 21 19:58:56 CET 2001, v 1.0.1: OpenFirmware support, fixed memory detection, better debug support, code cleaning

Wed Feb 21 14:47:06 CET 2001, v 1.0.0: First working version

Last modified: Tue Feb 27 17:31:39 CET 2001