From owner-freebsd-small  Wed Dec 12 15: 0:26 2001
Delivered-To: freebsd-small@freebsd.org
Received: from rwcrmhc51.attbi.com (rwcrmhc51.attbi.com [204.127.198.38])
	by hub.freebsd.org (Postfix) with ESMTP
	id 920F937B419; Wed, 12 Dec 2001 15:00:17 -0800 (PST)
Received: from InterJet.elischer.org ([12.232.206.8])
          by rwcrmhc51.attbi.com
          (InterMail vM.4.01.03.27 201-229-121-127-20010626) with ESMTP
          id <20011212230017.KKCK5010.rwcrmhc51.attbi.com@InterJet.elischer.org>;
          Wed, 12 Dec 2001 23:00:17 +0000
Received: from localhost (localhost.elischer.org [127.0.0.1])
	by InterJet.elischer.org (8.9.1a/8.9.1) with ESMTP id OAA11856;
	Wed, 12 Dec 2001 14:54:27 -0800 (PST)
Date: Wed, 12 Dec 2001 14:54:26 -0800 (PST)
From: Julian Elischer <julian@elischer.org>
To: "Chuck T." <freebsdfan@hotmail.com>
Cc: freebsd-small@freebsd.org, freebsd-hackers@freebsd.org
Subject: Re: help with loadable module & PicoBSD
In-Reply-To: <F20wWkVNqXSvUkBAB7p00001664@hotmail.com>
Message-ID: <Pine.BSF.4.21.0112121453240.5654-100000@InterJet.elischer.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-small@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-small.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-small>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-small>
X-Loop: FreeBSD.ORG

also look at (in current
only!) /usr/share/examples/drivers/make_device_driver.sh

is makes a driver with ISA, and PCI-based interfaces.


On Wed, 12 Dec 2001, Chuck T. wrote:

> I'm trying to write an ISA device driver from scratch and I'm also trying to 
> make it a kernel loadable to make my debugging life easier. I started with 
> /usr/share/examples/kld/cdev and have modified it by adding the following:
> 
> static int
> xxx_isa_probe(device_t dev)
> {
> 	int ret = ENXIO;
> 
> 	device_printf(dev,"xxx_isa_probe() called.\n");
> 
> 	if(device_get_unit(dev) == 0) {
> 		ret = 0;
> 	}
> 	return ret;
> }
> 
> static int
> xxx_isa_attach(device_t dev)
> {
> 	device_printf(dev,"xxx_isa_attach() called.\n");
> 	return 0;
> }
> 
> static int
> xxx_isa_detach(device_t dev)
> {
> 	device_printf(dev,"xxx_isa_detach() called.\n");
> 	return 0;
> }
> 
> static struct isa_pnp_id xxx_ids[] = {
> 	{ 0,		NULL }
> };
> 
> static device_method_t xxx_isa_methods[] = {
> 	/* Device interface */
> 	DEVMETHOD(device_probe,		xxx_isa_probe),
> 	DEVMETHOD(device_attach,	xxx_isa_attach),
> 	DEVMETHOD(device_detach,	xxx_isa_detach),
> 
> 	{ 0, 0 }
> };
> 
> static driver_t xxx_isa_driver = {
> 	driver_name,
> 	xxx_isa_methods,
> 	0
> };
> 
> static	devclass_t	xxx_devclass;
> 
> /* Declare the module to the system */
> DRIVER_MODULE(xxx, isa, xxx_isa_driver, xxx_devclass, cdev_load, 0);
> 
> When I load the skeletion on my development machine (FreeBSD 4.4) both 
> cdev_load() and xxx_isa_probe() are called as expected.  However when I load 
> the same binary on my PicoBSD target it only cdev_load() is called, *NOT* 
> xxx_isa_probe().  My PicoBSD is built from the same sources as my 
> development machine and both are FreeBSD 4.4-release.  Both include the isa 
> bus in their configuration files. I'm sure I'm doing something wrong as I 
> have been able to load stock Ethernet driver kernel modules on Pico before.
> 
> Any suggestions ?  I'm lost.  I tried removing the stripping step in the 
> PicoBSD build thinking that was on obvious difference between a Pico build 
> and a full build, but that didn't help.
> 
> _________________________________________________________________
> MSN Photos is the easiest way to share and print your photos: 
> http://photos.msn.com/support/worldwide.aspx
> 
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-hackers" in the body of the message
> 


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-small" in the body of the message