RE: Question on the pcmcia module for ppc

Hi, Peter and all,
Could you give me some more detailed hints?
The return value from m8xx_get_status()/m8xx_pcmcia.c is 0x190, which means
the current status of the PCMCIA card is : SS_POWERON + SS_DETECT + SS_BATDEAD.
It seems that the problem coming from SS_BATDEAD.
In function m8xx_get_status()/m8xx_pcmcia.c, there are the following statements:
	if (s->state.flags & SS_IOCARD)
		*value |= (pipr & M8XX_PCMCIA_BVD1(_slot_)) ? SS_STSCHG : 0;
	else {
		*value |= (pipr & M8XX_PCMCIA_RDY(_slot_)) ? SS_READY : 0;
		*value |= (pipr & M8XX_PCMCIA_BVD1(_slot_)) ? SS_BATDEAD : 0;
		*value |= (pipr & M8XX_PCMCIA_BVD2(_slot_)) ? SS_BATWARN : 0;
	}
My card is a Prism2 WLAN card, a IOCARD. Why  "(s->state.flags  & SS_IOCARD)"
returns FALSE?
Who should set the s->state.flags to state this is a IO CARD, not a memory only card?

As to the IO space, I defined

#define  _IO_BASE              0x80000000
#define  _IO_BASE_SIZE   0x1000
in the header file for my board.
And I use ioremap() in function  arch/ppc/mm/init.c/MMU_init().
ioremap( _IO_BASE, _IO_BASE_SIZE);
Is that OK for PCMCIA IO base access?

Thanks a lot
rolf

-----Original Message-----
From: Peter Desnoyers [mailto:pdesnoyers@chinook.com]
Sent: 2002?1?4? 22:21
To: Liu HongXun-a16975
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: Question on the pcmcia module for ppc


Liu HongXun-a16975 wrote:

When I inserted ds.o, the driver tells me that "cs: socket 0 timed out during reset"
I looked through the source code and the debug info.
I found that a lot of the same messages as follows:
GetStatus(0) = 0x190
...
Such info come from m8xx_pcmcia.c/m8xx_get_status. It seems that someone
is not satisfied with the above return value and " get status " again and again.
Then it quit.

To look at it a different way - the driver was unhappy with the value of
the first inb() on an address in the card's I/O space.

My first guess (been there myself) is that inb() and outb() aren't
working to your card's I/O space.


--
.....................................................................
 Peter Desnoyers            (781) 457-1165   pdesnoyers@chinook.com
 Chinook Communications     (617) 661-1979   pjd@fred.cambridge.ma.us
 100 Hayden Ave, Lexington MA 02421

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Liu HongXun-a16975 wrote:

Hi, Peter and all,
Could you give me some more detailed hints?

I'll repeat what I said, more slowly and clearly :-)

   I don't think that inb() and outb() are working to your PCMCIA
   card, since it appears that the software does not like the
   return value from what is probably the first inb() read from
   the card's I/O space.

That means that the code for inb() (_IOBASE and all that) doesn't match
the way you're initializing your PCMCIA registers.

As to the IO space, I defined

#define  _IO_BASE              0x80000000
#define  _IO_BASE_SIZE   0x1000
in the header file for my board.
And I use ioremap() in function  arch/ppc/mm/init.c/MMU_init().
ioremap( _IO_BASE, _IO_BASE_SIZE);
Is that OK for PCMCIA IO base access?

You'll have to tell me.  Or else you'll have to provide some information
on how you're initializing the PCMCIA registers.

One very relevant question here - do you have PCI on your board?
Mapping all this stuff properly is a bit harder if you do, but still
doable.

--
.....................................................................
 Peter Desnoyers            (781) 457-1165   pdesnoyers@chinook.com
 Chinook Communications     (617) 661-1979   pjd@fred.cambridge.ma.us
 100 Hayden Ave, Lexington MA 02421

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/