From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 2 Feb 1999 10:23:49 +1100 Message-Id: <199902012323.KAA24452@tango.anu.edu.au> From: Paul Mackerras To: bryanc@ihug.co.nz CC: linuxppc-dev@lists.linuxppc.org In-reply-to: (message from Bryan Christianson on Tue, 2 Feb 1999 08:42:28 +1300) Subject: Re: I/O Port Conflicts with PCI devices? Reply-to: Paul.Mackerras@cs.anu.edu.au References: Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Bryan Christianson wrote: > The following listing of /proc/pci shows that I have 2 devices reporting an > I/O port of 0x400. Is this possible or am I not seeing the whole truth > here? When I try to access the port (with inl() or outl()), the machine > panics. I published this panic on the list last week and had no response. Most likely neither devices is responding to I/O-space accesses because the PCI_COMMAND_IO bit (enable response to I/O space accesses) in the PCI command register isn't set. That would explain the machine check when you try to access the device. Paul. [[ This message was sent via the linuxppc-dev mailing list. Replies are ]] [[ not forced back to the list, so be sure to Cc linuxppc-dev if your ]] [[ reply is of general interest. To unsubscribe from linuxppc-dev, send ]] [[ the message 'unsubscribe' to linuxppc-dev-request@lists.linuxppc.org ]]