----- Original Message ----- From: "atul srivastava" <atulsrivastava9@rediffmail.com> To: <linux-mips@linux-mips.org> Sent: Friday, September 27, 2002 10:46 AM Subject: mips kseg1 mapping.. > 1.PCI BAR 1 of my eepro100 card has been initialised with > address 0x18800100 for 64 bytes. > this is a valid PCI IO address as per manual. > > 2.what i understand is that lower 0 - 512 MB physical is mapped to > 0xa000-0000 to 0xb7ff-ffff virtual and also access to this range > in uncached. > > 3.when i am loading my eepro100 driver , in do_eeprom_cmd() when > it refers the address( ioaddr + SCBeeprom) my kernel panicks with > message "unable to handle kernel paging request at 0xd100010e. > > this virtual address is in range 0xa000-0000 to 0xb7ff-ffff. KSEG1 is always mapped (you can think of it as wired). PCI bus addresses should be remapped through ioremap. Is ioremap returning the address you expect? Regards, Brad
