aux/vga: initialize nvidia mmio before calling getpcixdid
 [rsc] --rw-rw-r-- M 1575046 glenda sys 31488 Feb 22 08:46 sys/src/cmd/aux/vga/nvidia.c
	/n/sourcesdump/2006/0222/plan9/sys/src/cmd/aux/vga/nvidia.c:145,150 - 
	/n/sourcesdump/2006/0223/plan9/sys/src/cmd/aux/vga/nvidia.c:145,171
	  		if(p == nil)
	  			error("%s: not found\n", ctlr->name);
	  
	+ 		vgactlw("type", ctlr->name);
	+ 
	+ 		mmio = segattach(0, "nvidiammio", 0, p->mem[0].size);
	+ 		if(mmio == (void*)-1)
	+ 			error("%s: segattach nvidiammio, size %d: %r\n",
	+ 				ctlr->name, p->mem[0].size);
	+ 
	+ 		nv->pci = p;
	+ 		nv->mmio = mmio;
	+ 
	+ 		nv->pfb = mmio+0x00100000/4;
	+ 		nv->pramdac = mmio+0x00680000/4;
	+ 		nv->pextdev = mmio+0x00101000/4;
	+ 		nv->pmc	= mmio+0x00000000/4;
	+ 		nv->ptimer = mmio+0x00009000/4;
	+ 		nv->pfifo = mmio+0x00002000/4;
	+ 		nv->pramin = mmio+0x00710000/4;
	+ 		nv->pgraph = mmio+0x00400000/4;
	+ 		nv->fifo = mmio+0x00800000/4;
	+ 		nv->pcrtc= mmio+0x00600000/4;		
	+ 
	  		nv->did = p->did;
	  		if ((nv->did & 0xfff0) == 0x00f0)
	  			getpcixdid(nv);
	/n/sourcesdump/2006/0222/plan9/sys/src/cmd/aux/vga/nvidia.c:190,215 - 
	/n/sourcesdump/2006/0223/plan9/sys/src/cmd/aux/vga/nvidia.c:211,216
	  			error("%s: DID %4.4uX unsupported\n", ctlr->name, nv->did);
	  			break;
	  		}
	- 		vgactlw("type", ctlr->name);
	- 
	- 		mmio = segattach(0, "nvidiammio", 0, p->mem[0].size);
	- 		if(mmio == (void*)-1)
	- 			error("%s: segattach nvidiammio, size %d: %r\n",
	- 				ctlr->name, p->mem[0].size);
	- 
	- 		nv->pci = p;
	- 		nv->mmio = mmio;
	- 
	- 		nv->pfb = mmio+0x00100000/4;
	- 		nv->pramdac = mmio+0x00680000/4;
	- 		nv->pextdev = mmio+0x00101000/4;
	- 		nv->pmc	= mmio+0x00000000/4;
	- 		nv->ptimer = mmio+0x00009000/4;
	- 		nv->pfifo = mmio+0x00002000/4;
	- 		nv->pramin = mmio+0x00710000/4;
	- 		nv->pgraph = mmio+0x00400000/4;
	- 		nv->fifo = mmio+0x00800000/4;
	- 		nv->pcrtc= mmio+0x00600000/4;		
	  	}
	  	nv = vga->private;
	  	implementation = nv->did & 0x0ff0;