Date: Tue, 23 Nov 2004 10:17:19 -0800 (PST) From: Doug White <dwhite@gumbysoft.com> To: "." <aik@fryazino.net> Cc: freebsd-arch@freebsd.org Subject: Re: I need help with serial driver Message-ID: <20041123101632.G86435@carver.gumbysoft.com> In-Reply-To: <1452678363.20041123052452@fryazino.net> References: <1452678363.20041123052452@fryazino.net>
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On Tue, 23 Nov 2004, . wrote: > Greetings! > I did not find in "BSD Developers handbook" or anywhere else theese > precious bits of information: > 1. What methods should character driver ( /dev/cuaa or similar) have? > 2. How application requests (open/read/ioctl/etc.) are mapped to > methods of the driver? > 3. Are there any special functions besides generic file I/O operations > (apart from ioctl(2))? Or are there any "special cases" of ioctl apart > from what is covered by man page? The scripts in /usr/share/examples/drivers/ may be of use to you. > I need to utlize the abilities of /dev/cuua to their extreme, but I > do not want to rewrite the standard one. Yet you are asking how. :) -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org
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