From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lucas Correia Villa Real Subject: Re: bugs! Date: Fri, 14 May 2004 20:14:40 -0300 Sender: linux-fbdev-devel-admin@lists.sourceforge.net Message-ID: <200405142014.40929.lucasvr@gobolinux.org> References: <200405140130.36852.lucasvr@gobolinux.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1BOlsS-0006JL-5A for linux-fbdev-devel@lists.sourceforge.net; Fri, 14 May 2004 16:14:04 -0700 Received: from ibague.terra.com.br ([200.154.55.225]) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.30) id 1BOlsR-0006vs-8f for linux-fbdev-devel@lists.sourceforge.net; Fri, 14 May 2004 16:14:03 -0700 Received: from potosi.terra.com.br (potosi.terra.com.br [200.154.55.131]) by ibague.terra.com.br (Postfix) with ESMTP id 031C5EC3D1 for ; Fri, 14 May 2004 20:14:02 -0300 (BRT) Received: from ummagumma.ozzmosis.net (200-203-051-117.nhoce7002.dsl.brasiltelecom.net.br [200.203.51.117]) (authenticated user lucasvr) by potosi.terra.com.br (Postfix) with ESMTP id 7B768370004 for ; Fri, 14 May 2004 20:14:01 -0300 (BRT) In-Reply-To: <200405140130.36852.lucasvr@gobolinux.org> Content-Disposition: inline Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: linux-fbdev-devel@lists.sourceforge.net Hi again, I've fixed the non-linefetch error: I was passing the virtual framebuffer address into fix.smem_start instead of the physical one. Things got weird then when fb_writeb() tryied to write on that address ;-) Cheers, Lucas On Friday 14 May 2004 01:30, Lucas Correia Villa Real wrote: > Hi! > > I'm almost finished with my driver for the monochromatic ST7565 LCD, but > I'm dealing with a bug that I could't solve by the entire day. > > It was designed to be run as a module, and it's living together with > another display that already owns the console devices. So, when I load > st7565's module, it just skips take_over_console() code in fbmem.c and > starts to accept write()'s on it. > > By the way, I got some demo applications from MicroWindows > (microwindows.org) that starts to get more information from the driver. It > looks like when they request st7565_set_cmap(), some invalid pointer is > accessed and the driver just dies: > > Unhandled fault: external abort on non-linefetch (0x00a) at 0x4001a004 > pgd = c3d78000 > *pgd = 0bcaf001, *pmd = 0bcaf001, *pte = c4a5e0b3, *ppte = c4a5eff2 > > I've looked at other drivers' routines, such as hgafb, and it really looks > to be everything on the right place. I got the impression that this error > could be happening due to the fact that my driver didn't get the console's > ownership, so I've disabled the other driver and compiled st7565 built-in, > but then the driver dies with the same message at take_over_console(). > > Does anyone know if hgafb is a working driver that I could rely on? Also I > got confused by the need to use or not a color pallete -- probably I don't > need, as I'm working only with black/white, but at this time I'm no more > sure about anything at all :-) > > I'm also confused about the "setcolreg()" function passed to fb_get_cmap(). > What should it do? What's the meaning of its 1st parameter, "regno"? > > If someone could take a time to give a quick look on my set_cmap() routine, > I've uploaded the code here: > > http://cscience.org/~lucasvr/etc/st7565.c > > Thanks in advance, any help will be very appreciated! > Lucas > > > ------------------------------------------------------- > This SF.Net email is sponsored by: SourceForge.net Broadband > Sign-up now for SourceForge Broadband and get the fastest > 6.0/768 connection for only $19.95/mo for the first 3 months! > http://ads.osdn.com/?ad_id=2562&alloc_id=6184&op=click > _______________________________________________ > Linux-fbdev-devel mailing list > Linux-fbdev-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linux-fbdev-devel ------------------------------------------------------- This SF.Net email is sponsored by: SourceForge.net Broadband Sign-up now for SourceForge Broadband and get the fastest 6.0/768 connection for only $19.95/mo for the first 3 months! http://ads.osdn.com/?ad_id=2562&alloc_id=6184&op=click