[ECOS] A question on PCI device driver

[ECOS] A question on PCI device driver

[Ling Su]

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Hi,
 
I am using the PCI device drive for NECvrc4373 board. Currently I met a 
simle question on the memory mapping. After I initialize the PCI bus, I find my 
PCI card. I allocate the memory space using cyg_pci_allocate_memory(), then I 
should can freely access the memory use the pointer provided by 
devinfo.base_maps[i], right? Unfortunately no matter I wrote what on this piece 
of memory, and I can read it back, but I can not capture any signal on the PCI 
bus, I think I didn't succeed in mapping the PCI bus.
 
The information I have for the PCI devinfo is 
BAR[0], base_address[0] is 0xC000A0008, probed size is oxFFFF008, CPU addr 
(base_map) is 0x8000A000, when I try to write "(*(char *)0x8000A000C)", 
supposely from 0x8000A000 is the programm view of PCI memory, right? Why I can 
not access it then? Anyone have ever test the PCI driver in this way, please 
shed me some light.
 
Thanks in advance!
 
Best Regards,
-Ling