On Sun, Feb 14, 1999 at 08:40:11AM -0500, Brian Feldman wrote:
>
>On Sun, 14 Feb 1999, Nicolas Souchu wrote:
>
>> On Sat, Feb 13, 1999 at 05:22:00PM -0500, Brian Feldman wrote:
>> >
>> >On Sat, 13 Feb 1999, Nicolas Souchu wrote:
>> >
>> >> Example program to fetch temperature or voltages is available at
>> >> http://www.planet.sci.kobe-u.ac.jp/~takawata/smbus/examples/
>> >> There's also an example program to fetch SDRAM info over the smbus.
>>
>> I attach you the detect.c program. It's very simple and may help us
>> in knowing what I2C hardware you have on your mobo.
>
>Where's my detect.c? I think you forgot to attach it :)
:) here it is!
>
>> >I tried them, and there's the problem: all the ioctl()s they perform return
>> >EINTR! Has this driver been tested on many motherboards? Why should I expect
>> >an EINTR? Just wondering :)
>>
>> EINTR is odd. It just mean that the device at the address requested on the
>> I2C bus do not respond. I have to translate SMBus errors to the appropriate
>> unix ones.
>
>Hmm... wouldn't the appropriate error for something not responding be an
>ENXIO or ETIMEDOUT? EINTR seems more than a little wrong for this purpouse.
Fix committed.
BTW, as outlined by -pkh all this is just a first step in a huge monitoring
adventure where all still need to be _defined_ (architecture and interfaces)
and implemented. Any proposition for doing the job is wellcome,
since I just have enough time to do the hardware SMBus support.
Nicholas
--
nso...@teaser.fr / nso...@freebsd.org
FreeBSD - Turning PCs into workstations - http://www.FreeBSD.org
/*-
* Copyright (c) 1999 Nicolas Souchu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* [id for your version control system, if any]
*/
/*This program is prototype version. I'll write better one*/
#include <stdlib.h>
#include <fcntl.h>
#include <machine/smb.h>
const double vfactor[]={1,1,1,1.67,4,-4,-1.67};
const char *Inpname[]={
"Vcore","Vit","VIO","+5V","+12V","-12V","-5V"
};
int doioctl(int alias, int cmd, caddr_t param)
{
int error = 1;
int retry = 3;
while (error && retry--) {
usleep(200);
error = ioctl(alias, cmd, param);
}
return (error);
}
int main (int argc,char argv[])
{
int alias, i;
unsigned char byte=0;
struct smbcmd cmd;
bzero(&cmd, sizeof(cmd));
cmd.data.byte_ptr = &byte;
alias = open("/dev/smb0", O_RDWR);
for (i=2; i<254; i+=2)
{
cmd.slave=(u_char)i;
if(doioctl(alias, SMB_RECVB, (caddr_t)&cmd)!=-1){
printf("%x found.\n",i);
}
}
close(alias);
return 0;
}
