Date: Wed, 10 Jan 2001 19:58:29 -0700 From: Warner Losh <imp@harmony.village.org> To: Duncan Barclay <dmlb@dmlb.org> Cc: mobile@FreeBSD.ORG Subject: Re: pccardd, pccard and memory mapping Message-ID: <200101110258.f0B2wTs66679@harmony.village.org> In-Reply-To: Your message of "Wed, 10 Jan 2001 20:52:37 GMT." <XFMail.010110205237.dmlb@computer.my.domain> References: <XFMail.010110205237.dmlb@computer.my.domain>
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In message <XFMail.010110205237.dmlb@computer.my.domain> Duncan Barclay writes: : o pccardd assumes that any devices that has shared memory is an : ed device. Bad. : o pccardd sets all memory to be 16bit Not too bad, but bad enough. : o pccardd sets all memory to have an offset in the address space that : suits ed cards BAD. : o pccardc abuses (not necessarily delibrately) memory window 0 : this can cause unmapping of the current cards memory area : (eg. pccardc rdattr). Not too bad. : Because of these problems there are some drivers for ethernet and : wireless LAN cards that don't use memory mapped access to the card. This doesn't sound good. : However, I would like to solicit opinions on whether doing this would be : worthwhile given NEWCARD? Is NEWCARD ever going to reach -stable? If not, : I think that tidying up this area would be useful. NEWCARD may reach -stable, but never as default. I think it would be worth tidying up, and if you have the time, go for it. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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