Re: [9fans] MBR and nvidia hangups

[gene <ggarbutt@surewest.net>]

rgr@sdf.lonestar.org (Rob Ristroph) wrote in message news:<87d6g5gd8e.fsf@rgristroph-austin.ath.cx>...

> However, no rio comes up:
> 
> init: starting /bin/rc
> aux/vga: nvidia: can't attach mmio segment
> dossrv: serving #s/dos
> rio: can't open display: initdisplay: /dev/draw/new: no frame buffer
> init: rc exit status: rio 13: display open
> 
> init: starting /bin/rc
> term%

I also ran into this problem installing on a system with a Creative
Labs Riva TNT board and was able to get rio working by making a change
in 9/pc/vganvidia.c nvidiapci:

/* Nvidia is good about backwards compatibility -- any did > 0x20 is
fine */
static Pcidev*
nvidiapci(void)
{
	Pcidev *p;

	p = nil;
	while((p = pcimatch(p, 0x10DE, 0)) != nil){
		if(p->did > 0x20 && p->ccrb == 3)	/* video card */
			return p;
	}
	return nil;
}

I believe the test should be:
                
                 if(p->did >= 0x20 && p->ccrb == 3) /* video card */

An earlier lib/vgadb shows the following for Nvidia

ctlr
        vid=0x10DE did=0x0020           # Riva TNT
        vid=0x10DE did=0x0028           # Riva TNT2
        vid=0x10DE did=0x0029           # Riva TNT2 Ultra
        vid=0x10DE did=0x002C           # Riva TNT2 Vanta
        vid=0x10DE did=0x002D           # Riva TNT2 M64
        vid=0x10DE did=0x00A0           # Riva TNT2 Integrated
        vid=0x10DE did=0x0100           # GeForce 256
        vid=0x10DE did=0x0101           # GeForce DDR
        vid=0x10DE did=0x0103           # Quadro
        vid=0x10DE did=0x0110           # GeForce2 MMX
        vid=0x10DE did=0x0111           # GeForce2 MMX DDR
        vid=0x10DE did=0x0112           # GeForce2 Go
        vid=0x10DE did=0x0113           # Quadro 2 MXR
        vid=0x10DE did=0x0150           # GeForce2 GTS
        vid=0x10DE did=0x0151           # GeForce2 GTS (rev 1)
        vid=0x10DE did=0x0152           # GeForce2 Ultra
        vid=0x10DE did=0x0153           # Quadro 2 Pro  
        vid=0x10DE did=0x0200           # GeForce3
        link=vga
        ctlr=nvidia linear=1
        hwgc=nvidiahwgc


-gwg