On Wed, 2006-08-16 at 11:49 +0100, Keir Fraser wrote: > Here you go. Arch/powerpc/vga.c isn't great but I assume it's > temporary > until vga support is fixed properly. > > If you think it looks okay I'll apply it. Also Sign-off or Ack if you > like.
Hi Keir, In general this looks a lot better, but I think ia64 is still going to have trouble with the chunk below. It seems that a VGA card operating in a standard text mode doesn't necessarily respond to all of these addresses. On some ia64 platforms that causes a hard fail response (the bus goes fatal and a reboot follows). On my system, the 0xB8000 test looks like it will probably work, but we never get there because either the 0xA0000 or the 0xB0000 test will cause the hardfail. Do we need to poke the card through I/O port space to get it into the right mode before probing it in MMIO space? I don't know enough about the VGA programming model to be able to do that. The card works once we start talking to it correctly, but this probe is a little too brute force. Thanks, Alex > + > + p = ioremap(0xA0000, 0x1000); > + detected = detect_video(p); > + iounmap(p); > + if ( detected ) > + return 1; > + > + p = ioremap(0xB0000, 0x1000); > + detected = detect_video(p); > + iounmap(p); > + if ( detected ) > + return 1; > + > + p = ioremap(0xB8000, 0x1000); > + detected = detect_video(p); > + iounmap(p); > + if ( detected ) > + return 1; > + -- Alex Williamson HP Open Source & Linux Org. _______________________________________________ Xen-ppc-devel mailing list Xenemail@example.com http://lists.xensource.com/xen-ppc-devel