Hai friends I am writing a character device driver for Diamond Systems IR104 digital IO card. The Platform is Arcom Viper board(PC104 compatible). This card has got Pc104 bus(i.e. ISA compatible). Viper is Xscale, little endian. Specification for Pc104 interface given in Viper specification is: 0x3D000000 ? 0x3FFFFFFF Reserved 0x3C000000 ? 0x3CFFFFFF PC/104 memory space (16MB) 0x30000400 ? 0x3BFFFFFF Reserved 0x30000000 ? 0x300003FF PC/104 I/O space (1kB) I configured IR104 IO card(jumper configuration) so that it's 8 registers will take address 0x300 to 0x307 in IO space. During driver development i took two approaches one: i added IO space base address and register address , and did inb() and oub(). then i did ioremap() on added result, and did inb() and oub() in second method: same procedure with IO memory base Both giving errors when i do Read or write. It is giving some memory paging related errors, i think there is a need for disabling paging in this. how to do this. Please help me. Give me a solution Nobin Mathew __________________________________ Do you Yahoo!? Yahoo! Sports - Sign up for Fantasy Baseball. http://baseball.fantasysports.yahoo.com/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
