From owner-freebsd-mobile Wed Jan 10 18:58:52 2001 Delivered-To: freebsd-mobile@freebsd.org Received: from harmony.village.org (rover.village.org [204.144.255.66]) by hub.freebsd.org (Postfix) with ESMTP id 3B3D137B400 for ; Wed, 10 Jan 2001 18:58:34 -0800 (PST) Received: from harmony.village.org (localhost.village.org [127.0.0.1]) by harmony.village.org (8.11.1/8.11.1) with ESMTP id f0B2wTs66679; Wed, 10 Jan 2001 19:58:29 -0700 (MST) (envelope-from imp@harmony.village.org) Message-Id: <200101110258.f0B2wTs66679@harmony.village.org> To: Duncan Barclay Subject: Re: pccardd, pccard and memory mapping Cc: mobile@FreeBSD.ORG In-reply-to: Your message of "Wed, 10 Jan 2001 20:52:37 GMT." References: Date: Wed, 10 Jan 2001 19:58:29 -0700 From: Warner Losh Sender: owner-freebsd-mobile@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org In message 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