Re: [9fans] PCMCIA 3CCFE574BT 10/100Mb ethernet driver

[Peter Bosch <pb@research.bell-labs.com>]

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For the 575 (CardBus), the PCI BAR2 register contains the address for
the cardbus specific registers.  Treat this address as an array of 3 ulongs
and acknowledge each interrupt as follows:

/* On the 575B and C, interrupts need to be acknowledged in CardBus memory space */
static void
intrack3c575(ulong *cbfns)
{
	cbfns[1] = 0x8000;
}

peter.


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From: jmk@plan9.bell-labs.com
To: 9fans@cse.psu.edu
Subject: Re: [9fans] PCMCIA 3CCFE574BT 10/100Mb ethernet driver
Date: Fri, 28 Sep 2001 08:18:46 -0400
Message-ID: <20010928121849.68177199E7@mail.cse.psu.edu>

I believe, never having seen one, that the 3CCFE574BT is a PCMCIA card based on
the chip used in the 3C905, but without the busmastering capability; the older 3C589
PCMCIA cards were based on the chip used in the original 3C509 series adapters.
The 3CCFE575BT is a Cardbus card using the full capabilities of the 3c905[BC] chips.

I think.

Given the way the 3C589 driver you have initialises and then just uses the base
elnk3 driver, it's possible you could add in the 3CCFE574BT with little change.
Of course, when 3Com wedges these PCI chips into PCMCIA/Cardbus cards there sometimes
are changes in the way they operate, e.g. the way interrupts are acknowledged on
the 3CCFE575BT.

A start would be to run aux/pcmcia and see if it looks plausible; on a 3C589 you get

	% aux/pcmcia
	device 268435456 bytes of 0ns unknown
	attr device 8192 bytes of 150ns EEPROM
	version 4.1
		3Com Corporation
		3C589D
		TP/BNC LAN Card Ver. 2a
		000002
	configuration registers at (0)0x10000 (1)0x10002
	configuration 1 (default)
		I/O device,
		Vcc:  Vnominal 5000000uV Iavg 30mA Ipeak 50mA Ipowerdown 5000uA
		max wait 700ns
		max ready/busy wait 500000ns
		IO space 4 address lines selectable 8bit or 8&16bit access
		interrupts:level, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
	configuration 3
		Vcc:  Vnominal 5000000uV Iavg 200mA Ipeak 200mA Ipowerdown 5000uA
	%

Someone here has been working very hard on integrating PCMCIA and Cardbus
support and we can handle the 3CCFE575BT now; there are a lot of changes to make
that happen and it won't be available until the next major release.

--jim

On Fri Sep 28 07:40:32 EDT 2001, boyd@fr.inter.net wrote:
> has anyone got one?  or any pointers?
>
> i'd like, at some point, to have ethernet.
>