[Airo-linux-general] airo_cs and IO Ports on the PPC

[Jim R. <row...@ac...>]

Hello,

I'm working with some custom PPC-based hardware. I'm using a Ricoh
Cardbus-PCI bridge with a Cisco 350 PC Card. I get a kernel Oops when
the Cisco card is being configured via an IO Port. The driver is trying
to write to address 0x100 - which is the first entry in the port range
given in /etc/pcmcia/config.opts. 

Since the PPC doesn't implement IO Ports, I was expecting the 0x100 to
be translated to a virtual address somewhere before it was used to
access the client card.

Should it be using ioports at all? I've noticed that if I take all
'include port 0x100...." statements out of /etc/pcmcia/config.opts then
there is no ioport allocated in /proc/ioports. Will the driver use IO
Memory instead if this happens?

If I need to use IO Ports, then how do I fix this incorrect address so
that I stop getting the memory access violations? 

This occured when the card was being configured. The call trace goes:

airo_config -> init_airo_card() -> setup_card() -> issuecommand() ->
sendcommand() -> OUT4500() -> outw() -> out_le16() ->  __asm__
__volatile__("sthbrx %1,0,%2; eieio" : "=m" (*addr) :
                              "r" (val), "r" (addr))



My /proc/ioports:
# cat /proc/ioports
00000100-0000013f : airo_cs
b0000000-b00fffff : PCI host bridge
  b00f7fd0-b00fbfcf : PCI CardBus #02
  b00fbfd0-b00fffcf : PCI CardBus #01
  b00fffd0-b00fffdf : CMD Technology Inc PCI0680
  b00fffe4-b00fffe7 : CMD Technology Inc PCI0680
  b00fffe8-b00fffef : CMD Technology Inc PCI0680
  b00ffff4-b00ffff7 : CMD Technology Inc PCI0680
  b00ffff8-b00fffff : CMD Technology Inc PCI0680



# cat /proc/iomem
80000000-803fffff : PCI host bridge
  80000000-80000fff : Ricoh Co Ltd RL5c476 II (#2)
  80080000-800fffff : PCI CardBus #01
  80100000-8017ffff : PCI CardBus #01
  80180000-801fffff : PCI CardBus #02
  80200000-8027ffff : PCI CardBus #02
  803f6000-803f6fff : Ricoh Co Ltd RL5c476 II
  803f7f00-803f7fff : CMD Technology Inc PCI0680
  803f8000-803fbfff : Texas Instruments TSB12LV26 IEEE-1394 Controller
(Link)
  803ff800-803fffff : Texas Instruments TSB12LV26 IEEE-1394 Controller
(Link)
a0000000-a0000fff : card services
c9000f00-c9000f07 : ide0
c9000f08-c9000f0f : ide1
c9000f10-c9000f17 : ide0
c9000f18-c9000f1f : ide1
# 

Any help would be much appreciated.

-- 
Jim Rowe
Advanced CounterMeasure Systems
Phone: (916)669-4304