On Fri, Dec 12, 2008 at 08:51:24AM +1100, Timothy S. Nelson wrote: > Quick question. > > On Wed, 10 Dec 2008, Timothy S. Nelson wrote: > >> 01:00.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4 MX >> 440] (rev a3) (prog-if 00 >> [VGA controller]) >> Subsystem: Micro-Star International Co., Ltd. Device 8470 >> Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- >> Stepping- SERR- FastB2B- DisINTx- >> Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- >> <TAbort- <MAbort- >SERR- <PERR- INTx- >> Interrupt: pin A routed to IRQ 10 >> Region 0: Memory at f0000000 (32-bit, non-prefetchable) [disabled] >> [size=16M] >> Region 1: Memory at e0000000 (32-bit, prefetchable) [disabled] >> [size=128M] >> Region 2: Memory at e8000000 (32-bit, prefetchable) [disabled] >> [size=512K] >> [virtual] Expansion ROM at e8080000 [disabled] [size=128K] > > Under what conditions should the [disabled] in the line above disappear? When the "MMIO enable" bit (aka "Mem-" above) is set in the Control register. That should at least enable the "Region 0/1/2" registers. I *thought* it would enable the Expansion ROM as well but that might not be sufficient. hth, grant > If I echo 1 to /sys/bus/pci/devices/0000:01:00.0/rom should the [disabled] > part go away? Because it doesn't. > > However, it's having some effect. > > [root@rhys ~]# echo 1 > /sys/bus/pci/devices/0000:01:00.0/rom > [root@rhys ~]# cat /sys/bus/pci/devices/0000:01:00.0/rom > [root@rhys ~]# echo 0 > /sys/bus/pci/devices/0000:01:00.0/rom > [root@rhys ~]# cat /sys/bus/pci/devices/0000:01:00.0/rom > cat: /sys/bus/pci/devices/0000:01:00.0/rom: Invalid argument > > I would've expected more, though, from the first "cat". > > Thanks, > > > --------------------------------------------------------------------- > | Name: Tim Nelson | Because the Creator is, | > | E-mail: wayland@xxxxxxxxxxxxx | I am | > --------------------------------------------------------------------- > > ----BEGIN GEEK CODE BLOCK---- > Version 3.12 > GCS d+++ s+: a- C++$ U+++$ P+++$ L+++ E- W+ N+ w--- V- PE(+) Y+>++ PGP->+++ > R(+) !tv b++ DI++++ D G+ e++>++++ h! y- > -----END GEEK CODE BLOCK----- > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
