Date: Tue, 25 Jan 2000 18:54:15 +0100 From: Jeroen Ruigrok/Asmodai <asmodai@wxs.nl> To: =?iso-8859-1?Q?Joachim_J=E4ckel?= <Joachim.Jaeckel@d.kamp.net> Cc: nox@jelal.kn-bremen.de, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: How to write a device-driver? Message-ID: <20000125185415.C290@daemon.ninth-circle.org> In-Reply-To: <388B8724.D3B9707C@d.kamp.net>; from Joachim.Jaeckel@d.kamp.net on Sun, Jan 23, 2000 at 11:56:36PM %2B0100 References: <388B8724.D3B9707C@d.kamp.net>
next in thread | previous in thread | raw e-mail | index | archive | help
-On [20000124 00:00], Joachim Jäckel (Joachim.Jaeckel@d.kamp.net) wrote: > >Here´s some information to the card I'd like to support: > >It's a Miro DC10+ Video Grabber Card for Non-Linear Video-Editing. >It uses a Siemens SAA7110, a Zoran 36060+36067 and a ADV???? chip to en- >and decode the video-information. I got the specifications for the chips >from Siemens and Zoran's Web-Sites and a first driver-skeleton was >generated through the /usr/share/examples/drivers/make_pci... script for >me. Did you contact Miro? And /usr/share/examples/drivers/make_pci is pre 4.0. >Currently I get a boot-message from my kernel, that he has found the >card.(I read the pci_id and send a text-message :-) That's a good start. >Additionally I found a linux-driver for this card (an early one...) but >it is not fully compatible with the documentation, I got. It can make certain things clear. >Maybe you would allow me one question? (To get a little faster to the >information than browsing through the source.) Asking questions is free. =) >But how get's the zoran36067_regs structure the information from the >chip? If you were using newbus (on FreeBSD 4.0) I'd say bus_space_read_#() to get the info in the registers our of your chip. >If I change the content of the structure, which function would change >the registers on the chip accordingly? (Or is it done through the call >of pci_map_mem? And is everything I change to the structure >automatically changed on the card?) I have to show my lack of 2.2.x and 3.x driver programming. I am spoiled due to 4.x. I think someone else needs to answer this. Juergen appears to know 3.x driver programming. >Sorry, if these questions are real dumb ones! Not at all. -- Jeroen Ruigrok vd W/Asmodai asmodai@[wxs.nl|bart.nl|freebsd.org] Documentation nutter/B-rated Coder BSD: Technical excellence at its best The BSD Programmer's Documentation Project <http://home.wxs.nl/~asmodai>; How the gods kill... To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20000125185415.C290>