RE: 440GX: mapping PCI address
From: Barbier, Renaud (GE Infrastructure) <hidden>
Date: 2004-07-22 14:43:26
/* * 36-bit trap ranges */ #define PPC44x_IO_LO 0x40000000 #define PPC44x_IO_HI 0x40001000 #define PPC44x_PCICFG_LO 0x0ec00000 #define PPC44x_PCICFG_HI 0x0ec7ffff #define PPC44x_PCIMEM_LO 0x80002000 #define PPC44x_PCIMEM_HI 0xffffffff
Hope this helps, Gerhard
Indeed, I get a virtual address out of mmap
but my system freezes when I access it.
I try to access the PCI external configuration registers:
ptr=(unsigned int *)mmap(0, getpagesize(), PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0x0ec00000);
My kernel is 2.4.21 I would guess it should work from what I have seen regarding
messages about 36-bit address on 440GX.
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