[ixp1200] ENP-2611 board PCI-to-PCI bridge testing problem!

[romit dasgupta]

Hi,
I faced a similar problem earlier. I wrote into the SROM of ENP for
requesting downstream memory aligned at 1MB. Look into the 21555 SROM
table in pg28 of ENP hardware reference manual. You can use the ntb_srom
utitlity under the redboot prompt to write. Let me know if you need
further details and I can send you the hex file I used.

Regards,
-Romit

smiley wrote:

>question ? ~~~!
>Since I  still could not load the module, I changed hhnet_drawb.c.
>---from----
>#define DRAWB_CFG_SETUP_DS3       0xB8 
>#define DRAWB_CFG_CHIP_CONTROL_1  0xCE
>#define HHNET_DRAWB_MEM_SIZE      (1024 * 1024)
>if (primary) 
>{
> ...
> bar = 4;
> irq_handler   = hhnet_drawb_intr_primary;
>}
>---to----
>#define DRAWB_CFG_SETUP_DS3       0xAC  
>#define DRAWB_CFG_CHIP_CONTROL_1  0xCC
>#define HHNET_DRAWB_MEM_SIZE      (4 * 1024)
>if (primary) 
>{ 
> ...
> bar = 0;
> irq_handler   = hhnet_drawb_intr_primary;
>}
>---
>After the modification, I COULD load the module on both side, server, and ENP.
>But still I could not make them to communicate.
>
>The dmesg & PCI  info from the server side-----------------
><dmesg>
>hhnet_drawb:  mem_paddr = fe6b0000
>hhnet_drawb:  mem virt = f89d900
>
><pci>
>03:08.0 Bridge: Intel Corp.: Unknown device b555 (rev 02)
>        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
>        Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>        Latency: 64
>        Interrupt: pin A routed to IRQ 24
>        Region 0: [virtual] Memory at fe6b0000 (32-bit, non-prefetchable) [size=4K]
>        Region 1: I/O ports at 2400 [size=256]
>        Region 2: [virtual] Memory at fe500000 (32-bit, non-prefetchable) [size=1M]
>        Region 3: Memory at e0000000 (32-bit, prefetchable) [size=256M]
>        Capabilities: [dc] Power Management version 2
>                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>        Capabilities: [e4] Vital Product Data
>        Capabilities: [ec] #06 [0080]
>The dmesg & PCI  info from the ENP side-----------------
><dmesg>
>hhnet_drawb:  mem_paddr = 00000000
>hhnet_drawb:  mem virt = cb687000
>
><pci>
>  Bus  0, device   1, function  0:
>    Bridge: PCI device 8086:b555 (Intel Corp.) (rev 2).
>      IRQ 41.
>      Non-prefetchable 32 bit memory at 0xe4000000 [0xe4000fff].
>      I/O at 0x100000 [0x1000ff]
>
>As you can see, the mem_paddr of ENP is set as 00000000. I think this is the reason of the problem.
>I think the correct value is "0xe4000000". Am I correct?
>If then, how do I fix it?
>
>Thank you in advance.
>
>Regards,
>EunYoung Joo
>
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