From owner-freebsd-current Thu Dec 2 11:12:20 1999 Delivered-To: freebsd-current@freebsd.org Received: from rover.village.org (rover.village.org [204.144.255.49]) by hub.freebsd.org (Postfix) with ESMTP id B62A014DCF; Thu, 2 Dec 1999 11:12:17 -0800 (PST) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (harmony.village.org [10.0.0.6]) by rover.village.org (8.9.3/8.9.3) with ESMTP id MAA18424; Thu, 2 Dec 1999 12:11:52 -0700 (MST) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (localhost.village.org [127.0.0.1]) by harmony.village.org (8.9.3/8.8.3) with ESMTP id MAA03854; Thu, 2 Dec 1999 12:11:51 -0700 (MST) Message-Id: <199912021911.MAA03854@harmony.village.org> To: "Matthew N. Dodd" Subject: Re: PCCARD eject freeze (was Re: your mail) Cc: Nick Hibma , Christopher Masto , Mike Smith , FreeBSD CURRENT Mailing List In-reply-to: Your message of "Thu, 02 Dec 1999 12:38:57 EST." References: Date: Thu, 02 Dec 1999 12:11:51 -0700 From: Warner Losh Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In message "Matthew N. Dodd" writes: : On Thu, 2 Dec 1999, Nick Hibma wrote: : > PCMCIA has the problem that the hardware register you are talking to can : > disappear on the spot, between 2 outb()s. : : Can't we do something about this using bus_space? This would give us a : fair bit of overhead for PCMCIA devices as well as require us to more : tightly couple newbus and bus_space (we'd probably want to 'cache' a : function pointer to the method to avoid method lookup overhead.) I had the same thought, but w/o a signal or other out of band error communication, I'm not sure how to implement this. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message