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Question: Any advantage (possible) to disable 2nd PCMCIA host? 

Forum: PCMCIA Installation and Configuration Issues
Date: 1999, Dec 17
From: Steve Snyder SteveSnyder

Compaq, in their finite wisdom, put only a single CardBus slot in my Presario 1260. So while the PCMCIA controller supports 2 slots only one can actually be used.

So, my questions is this: is it desireable, or even possible, to disable the second host on the PCMCIA controller?

The current (pcmcia-cs-3.1.7) is working fine with my 3Com 3C575 NIC. I'm thinking in terms of system resources saved, rather than fixing any specific problem.

My configuration: 

 Intel PCIC probe:
   TI 1131 PCI-to-CardBus at bus 0 slot 10, mem 0x68000000, 2 sockets
     host opts [0]: [ring] [pci + serial irq] [no pci irq] [lat 168/176] [bus 32/34]
     host opts [1]: [ring] [pci + serial irq] [no pci irq] [lat 168/176] [bus 35/37]
     ISA irqs (scanned) = 3,4,7,9,12 polling interval = 1000 ms
 3c59x.c:v0.99L 5/28/99 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/vortex.html
 cs: IO port probe 0x1000-0x17ff: clean.
 cs: IO port probe 0x0100-0x04ff: excluding 0x378-0x37f 0x388-0x38f 0x408-0x40f 0x480-0x48f 0x4d0-0x4d7
 cs: IO port probe 0x0a00-0x0aff: clean.
 cs: cb_alloc(bus 32): vendor 0x10b7, device 0x5157
 cs: cb_config(bus 32)
   fn 0 bar 1: io 0x280-0x2ff
   fn 0 bar 2: mem 0xa0021000-0xa002107f
   fn 0 bar 3: mem 0xa0020000-0xa002007f
   fn 0 rom: mem 0xa0000000-0xa001ffff
 eth0: 3Com 3CCFE575 Cyclone CardBus at 0x280,  00:10:4b:f6:49:8f, IRQ 3
 eth0: CardBus functions mapped a0020000->c683e000

Thank you.

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Not really, as far as I know

Re: Question: Any advantage (possible) to disable 2nd PCMCIA host? (Steve Snyder)
Date: 1999, Dec 17
From: David Hinds <dhinds@pcmcia.sourceforge.org> 

The second socket does not really consume any significant resources.
It uses a 4K memory window for mapping the sockets, and a couple
kernel data structures... probably not more than 1K or so.  You can't
really power off that half of the bridge... but it draws negligible
power, with no card present.

-- Dave
Any advantage (possible) to disable 2nd PCMCIA host?

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