On 7/31/26 14:19, Daniel Palmer wrote:
Currently voodoo cards that weren't booted by the video BIOS aren't usable because the hardware is never brought up.This means if you happen to have a proper - non-x86 - computer, another card is the primary or you have a new BIOS that cannot run the video BIOS tdfxfb would probe but you will be staring at "no signal detected". This series implements manually booting cards using the values from the video BIOS' own table. Currently this only works for the voodoo 3. Debugging was partially assisted by Claude Fable 5. I could not work out why this would not work for months so I told it to create a voodoo 3 emulation for QEMU to compare the BIOS against my code. That made it obvious my init sequence matched the BIOS but the VGA core wasn't running. This has been tested on a real voodoo 3 in an x86-64 board and an Amiga 4000 with a mediator PCI bridge. I have some patches to add an interface for doing 3D rendering that are not included in this series and 3D rendering is also working so as far as I can tell everything is good. v2: - Fix up some poor 3am English mistakes in the cover letter. - Limit this to the voodoo 3. The BIOS layout is different for the 4/5 apparently. - Fixed the valid sashiko complaints - mainly clearing the framebuffer memory before fbcon might have bound, retaining the current behaviour if we can't get the video BIOS to get the config parameters. - Tweaked the wording of some of the commit messages. Daniel Palmer (5): fbdev: tdfxfb: Add helper to read config table from BIOS fbdev: tdfxfb: Attempt to detect if the card wasn't booted fbdev: tdfxfb: Manually boot unbooted cards fbdev: tdfxfb: Wake the VGA core before programming the CRTC fbdev: tdfxfb: Program the initial video mode drivers/video/fbdev/tdfxfb.c | 155 +++++++++++++++++++++++++++++++++++ 1 file changed, 155 insertions(+)
New series applied to fbdev. Thanks! Helge
