[ECOS] Memory mapping Question on NECvrc4373

[Ling Su]

Hello, 
 
Sorry for dropping a lot of message on this list today. I am busy with 
finding this problem. Jifl, I guess you might could pick up this question, of 
course, if you have time :-). Thanks!
 
I found on the DDB-NECvrc4373 board manual, the physical address of PCI 
slots if from 0x0C000000, and the Virtual address for the PROM is mapped to 
0xAC000000. In the eCos HAL layer "plf_io.h" for VRC4373, the 
HAL_PCI_PHYSICAL_MEMORY_BASE is 0xC000000, which is different from the 
0x0C000000 phyiscal address on the manual. The comment for the 
HAL_PCI_PHYSICAL_MEMORY_BASE is "where the PCI spaces are mapped in the CPU's 
(virtual) address space", I don't quiet understand this differnece and the 
comment actually. According to my understanding the 
HAL_PCI_PHYSICAL_MEMORY_BASE should be the phyiscal address space on board, is 
that correct?
 
I do have trouble to find a method to access the PCI mapped memory, anyone 
could shed me some light, I appreciate very much!
 
Best Regards,
-Ling
 
 
 
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