9fans - fans of the OS Plan 9 from Bell Labs
 help / color / mirror / Atom feed
* Re: [9fans] i82365 change
@ 2002-05-28 14:33 Fco.J.Ballesteros
  0 siblings, 0 replies; 5+ messages in thread
From: Fco.J.Ballesteros @ 2002-05-28 14:33 UTC (permalink / raw)
  To: 9fans

I'm not sure at all.
I tested the two cards I have and they work, but it'd be
better if anyone with a 5V card could try w/ that bit set.



^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [9fans] i82365 change
@ 2002-05-28 15:00 Fco.J.Ballesteros
  0 siblings, 0 replies; 5+ messages in thread
From: Fco.J.Ballesteros @ 2002-05-28 15:00 UTC (permalink / raw)
  To: 9fans

Ok. I'll test what you say instead of blindly setting the bit.

thanks


^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [9fans] i82365 change
@ 2002-05-28 14:47 nigel
  0 siblings, 0 replies; 5+ messages in thread
From: nigel @ 2002-05-28 14:47 UTC (permalink / raw)
  To: 9fans

Reading the oracle (http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/pccard/)
that bit does nothing for any pcmcia bridge or cardbus bridge in compatbility mode
except 82365SL-DF.

However, setting it will break any 5v cards. You need to

1) detect the DF version
2) use a different register to detect if the card present is 3.3v or 5v
3) set the appropriate bit in the case of 3.3v

The DF version returns 0x84 in register 0.
Register 0x16 is the \x16Card Detect and General Control register.
Bit 6 tells the voltage of slot 1, and bit 7 for slot 2.
0 means 3.3v, 1 means 5v.

So, it register 0 is 0x84, and register 0x16 has the appropriate bit clear,
then set the 3.3v bit.

I think.


^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: [9fans] i82365 change
@ 2002-05-28 14:27 nigel
  0 siblings, 0 replies; 5+ messages in thread
From: nigel @ 2002-05-28 14:27 UTC (permalink / raw)
  To: 9fans

That bit only exists in 82365SL-DF compatible versions of the chip.
Are we sure that this won't break other vendors chips, or stop 5V
devices working?


^ permalink raw reply	[flat|nested] 5+ messages in thread

* [9fans] i82365 change
@ 2002-05-28 14:04 Fco.J.Ballesteros
  0 siblings, 0 replies; 5+ messages in thread
From: Fco.J.Ballesteros @ 2002-05-28 14:04 UTC (permalink / raw)
  To: 9fans

I don't know why, but without this change my pcmcia disk doesn't
get powered and therefore does not work. I think the extra bit
been set by this diff is specifying `3v power' besides `cardena'.

hth

diff /n/dump/2002/0528/sys/src/9/pc/devi82365.c /sys/src/9/pc/devi82365.c
19a20
> 	 Vcc3v=		 (3<<3),
22c23,24
< 	 Fcardena=	 (1<<4),	/*  PC card enable */
---
> 	 Fcardena=	 Vcc3v,
> //	 Fcardena=	 (1<<4),	/*  PC card enable */



^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2002-05-28 15:00 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2002-05-28 14:33 [9fans] i82365 change Fco.J.Ballesteros
  -- strict thread matches above, loose matches on Subject: below --
2002-05-28 15:00 Fco.J.Ballesteros
2002-05-28 14:47 nigel
2002-05-28 14:27 nigel
2002-05-28 14:04 Fco.J.Ballesteros

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).