help, question on pci communication!

["Guangxing Zhang" <guangxing@ict.ac.cn>]

Hi, Fuxin and everyone see this mail,
    In linux world ,newbies always like to ask and the veterans will always be 
enthusiastic.:)~~
    Now there is a "ask", of course i am a newbie. 
    Follow is the  architecture  which we are working on.
    Now i want to transfer the data from the "sb1250" to mcp750 through the PCI 
bus with the help of 21555 bridge.
I want to implement it in kernel module.Although knowing "use the force ,read 
source",but i really do not know
how and where to begin.
    Is there any advice on it ? How to implement the communication through PCI 
(or PCI-to-PCI bridge) in kernel 
moudle?
    Any help will be appreciated!Thank in advance!
  
                      -------------
                          |  MCP 750  |  (Power PC)
                      -------------
                            |
　           -------------------------------------------CPCI
                         |
             ---------------|--------------------------------    
             |      --------|-----                         |
             |      |Intel 21555 |(PCI-TO-PCI Bridge)      |
             |      --------------                         |
             |        |                                                    |    
             |      --------(PCI bus)                                      |
                         |          |                                  |
                         |       --------                              |
                         |               |SB1250|(CPU)                         |
                         |       --------                              |
             ----------------------------------------------           
　　　　　　　　Guangxing Zhang
　　　　　　　　guangxing@ict.ac.cn
                            2003-09-24 16:03:04