From owner-freebsd-mobile  Wed Apr 21  7:57:29 1999
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Date: Wed, 21 Apr 1999 07:54:59 -0700 (PDT)
From: Randy Bush <randy@psg.com>
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To: Bruce Campbell <bc-freebsd@vicious.dropbear.id.au>
Cc: freebsd-mobile@freebsd.org
Subject: Re: pccardd and ep0 (3c589D)
References: <Pine.SV4.3.96.990421182516.19367U-100000@julubu.staff.apnic.net>
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> Quick overview:
> 
> 	3.1-RELEASE kernel with ep0 on a laptop results in 'No buffer
> 	space available' when used with pccardd.  3c589D.  Unloads ep0
> 	right after getting mac address.
> 
> Detail:
> 
> Recently work has deigned to allocate myself with a humble HP Omnibook for
> my purposes.  The FreeBSD 3.1-RELEASE GENERIC kernel works fine with the
> zp0 device, however of course the APM side of things doesn't work.
> 
> Recompiling the kernel with the following added options to GENERIC:
> 
> 	# APM support
> 	device apm0 at isa? flags 0x31
> 
> 	# PCMCIA support
> 	controller card0
> 	device pcic0 at card?
> 	device pcic1 at card?
> 	options PCIC_RESUME_RESET
> 
> 	# ep0 driver (3com) to work under pccardd
> 	device ep0 at isa? port 0x300 net irq 10 vector epintr
> 	
> 	# Disable the zp0 driver, we don't need it, use ep0 instead with
> 	# laptops (according to various gnats #s)
> 	# device zp0 at isa? port 0x300 net irq 10 iomem 0xd8000
> 
> 	# Reset various things after a resume
> 	options PSM_HOOKAPM # Hook the APM resume event, useful for some laptops
> 	options PSM_RESETAFTERSUSPEND # reset the device at the resume event
> 	options "CPU_SUSP_HLT"
> 
> 
> results in a kernel which can be suspended quite happily, which is the
> main thing I want.  ep0 can be brought up and down quite happily, but when
> any traffic is sent over that link:
> 
>  ping: sendto: No buffer space available

i am occasionally seeing the "No buffer space available" with zp0 on a sony
vaio.  have yet to localize, but seems to do with killing rdumps or other
rmt processes.

randy


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