Need help with IDE/PCI config on unknown board(was: [U-Boot-Users] (no subject))

[Stefan Roese <sr@denx.de>]

Hi Jerry,

On Thursday, 2. March 2006 04:43, Jerry K. Schieffer wrote:
> Thank you for your help.  In answer to your questions:
> >>>Can you "see" the PCI IDE controller at this address? What's the
>
> output of:
> >>>=> md.b e80001f0 10
>
> I believe not because
> => md.b e8000000 10
> e8000000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> ................

Correct. That's _not_ the IDE controller.

> Found PCI device 00.04.00:
>   vendor ID =                   0x105a
>   device ID =                   0x0d30
>   command register =            0x0004

Hmmm. I/O access is not enabled. So any access to the I/O spaces will fail.

>   status register =             0x0210
>   revision ID =                 0x02
>   class code =                  0x01 (Mass storage controller)
>   sub class code =              0x01
>   programming interface =       0x8a
>   cache line =                  0x00
>   latency time =                0x40
>   header type =                 0x00
>   BIST =                        0x00
>   base address 0 =              0x000001f1

Also strange. I would expect the BAR's to be assigned to something like:

  base address 0 =              0x008001f1

Then you could access this I/O space at 0xe88001f0. Here a dump from our 
Walnut with a PCI IDE controller:

Found PCI device 00.01.00:
  vendor ID =                   0x1191
  device ID =                   0x0009
  command register =            0x0007
  status register =             0x02b0
  revision ID =                 0x10
  class code =                  0x01 (Mass storage controller)
  sub class code =              0x80
  programming interface =       0x00
  cache line =                  0x08
  latency time =                0x80
  header type =                 0x00
  BIST =                        0x00
  base address 0 =              0x00800001
  base address 1 =              0x00800009
  base address 2 =              0x00800011
  base address 3 =              0x00800019
  base address 4 =              0x00800081
  base address 5 =              0x80000000
  cardBus CIS pointer =         0x00000000
  sub system vendor ID =        0x1191
  sub system ID =               0x0009
  expansion ROM base address =  0x40000000
  interrupt line =              0x1e
  interrupt pin =               0x01
  min Grant =                   0x0b
  max Latency =                 0x04
=> md.b e8800010 10
e8800010: 7f 7f 7f 7f 7f 7f 7f 7f ff ff 7f ff ff ff ff ff    ................

Do you use the same PCI config setup as the Walnut in your board config file? 
Do you use the lastest U-Boot version (current GIT or CVS version)?

Best regards,
Stefan