Re: IBM HDAPS things are looking up (was: Re: [Hdaps-devel] Re: [ltp] IBM HDAPS Someone interested? (Accelerometer))

Andrey Panin
2005-07-04T08:46:43Z

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On 185, 07 04, 2005 at 08:00:12AM +0200, Lenz Grimmer wrote:
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> Hi Jesper,
>
> Jesper Juhl wrote:
>
> > I just had a nice chat with the guys there and we got some
> > improvements made by them and us merged up. And I /think/ we agreed
> > that I'll maintain the driver, merge fixes/features etc and eventually
> > try to get it merged.
>
> Thanks a ton! I am really excited to see that you guys made so much
> progress over the past few days! Of course, I immediately had to give it
> a try :)
>
> > Currently the driver loads, initializes the accelerometer and we can
> > read data from it.
>
> And here is a first support request - the kernel module does not load
> for me :(
>
> I have a Thinkpad T42, running SUSE Linux 9.3 (Kernel 2.6.11 with SUSE
> patches). The APS works on Windows, so I know the accelerometer is there.
>
> I have downloaded the sources from your site mentioned below, ran "make"
> and "make install". Then I created the /dev/hdaps0 device node by
> running "mknod hdaps0 c 228 0". (I picked this out of another message in
> the discussion)
>
> However, running "modprobe ibm_hdaps" only yields an error:
>
> FATAL: Error inserting ibm_hdaps
> (/lib/modules/2.6.11.4-21.7-default/kernel/drivers/misc/ibm_hdaps.ko):
> No such device or address
>
> In /var/log/messages, I only see:
>
> Jul 4 07:17:20 metis kernel: ibm_hdaps: unsupported module, tainting
> kernel.
> Jul 4 07:17:20 metis kernel: init 1 50239260

Looks like io port region is already busy.

> (The last number differs every time I load the module)
> Passing "debug=1" did not really reveal any more info. How could I
> provide you with more detail?

Run cat /proc/ioports

> I also tried to load Henrik's module, but it also spits out an error
> "failed to allocate I/O", then a long number of "latch_check" lines and
> "initialize() ret: -5".
>
> Maybe the accelerometer on the T42 uses a different port range? Or could
> it be that some other kernel module is blocking this I/O range? I have
> no clue...
>
> > I'll be working on adding sysfs stuff to it tomorrow so it's generally
> > useful (at least for monitoring things - not yet for parking disk
> > heads).
>
> Maybe there is some kind of all-purpose ATA command that instructs the
> disk drive to park the heads? Jens, could you give us a hint on how a
> userspace application would do that?
>
> > Once I've got the sysfs stuff sorted I'll publish a new version.
> >
> > The most recent version of the driver is currently at
> > http://lemonshop.dk/ibm_hpaps/ (note: this is most likely not going to
> > be the permanent home of this driver, but it's where it lives for
> > now).
>
> Should we try to move the sources over to the hdaps.sf.net CVS tree?
> Even though I am more a Subversion fan, having at least some kind of
> version control would make it easier for others to participate and make
> sure we can send patches against the latest version.
>
> > Patches are welcome at jesper.juhl@gmail.com
>
> Attached please find a diff against ibm_hdaps.c I found on the URL above
> - - I moved some stuff to a separate header file (attached) and added
> printing out the driver name and copyright during module initialization
> (taken from Henrik's files). I also added an "uninstall" target to the
> Makefile.
>
> I hope you find it useful!
>
> Bye,
> LenZ
> - --
> - ------------------------------------------------------------------
> Lenz Grimmer <lenz@grimmer.com> -o)
> [ICQ: 160767607 | Jabber: LenZGr@jabber.org] /\\
> http://www.lenzg.org/ V_V
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> --- ibm_hdaps.c.org 2005-07-04 07:33:17.000000000 +0200
> +++ ibm_hdaps.c 2005-07-04 07:42:58.000000000 +0200
> @@ -34,31 +34,18 @@
> #include <linux/delay.h>
> #include <asm/io.h>
> #include <asm/uaccess.h>
> +#include "ibm_hdaps.h"
>
>
> +#define DRV_NAME "ibm_hdaps"
> +#define DRV_DESCRIPTION "IBM ThinkPad Accelerometer driver"
> +#define DRV_COPYRIGHT "Copyright (c) 2005 Jesper Juhl <jesper.juhl@gmail.com>"
> +#define DRV_VERSION "0.2"
>
> -#define HDAPS_LOW_PORT 0x1600 /* first port used by accelerometer */
> -#define HDAPS_NR_PORTS 0x30 /* nr of ports total - 0x1600 through 0x162f */
> -
> -#define STATE_STALE 0x00 /* accelerometer data is stale */
> -#define STATE_FRESH 0x50 /* accelerometer data fresh fresh */
> -
> -#define REFRESH_ASYNC 0x00 /* do asynchronous refresh */
> -#define REFRESH_SYNC 0x01 /* do synchronous refresh */
> -
> -/*
> - * where to find the various accelerometer data
> - * these map to the members of struct hdaps_accel_data
> - */
> -#define HDAPS_PORT_STATE 0x1611
> -#define HDAPS_PORT_XACCEL 0x1612
> -#define HDAPS_PORT_YACCEL 0x1614
> -#define HDAPS_PORT_TEMP 0x1616
> -#define HDAPS_PORT_XVAR 0x1617
> -#define HDAPS_PORT_YVAR 0x1619
> -#define HDAPS_PORT_TEMP2 0x161b
> -#define HDAPS_PORT_UNKNOWN 0x161c
> -#define HDAPS_PORT_KMACCT 0x161d
> +MODULE_LICENSE("GPL");
> +MODULE_AUTHOR(DRV_COPYRIGHT);
> +MODULE_DESCRIPTION(DRV_DESCRIPTION);
> +MODULE_VERSION(DRV_VERSION);
>
> static short debug = 0;
>
> @@ -345,6 +332,9 @@
> int retval;
> struct hdaps_accel_data data;
>
> + printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
> + printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
> +
> printk(KERN_WARNING "init 1 %08ld\n", jiffies);
> if (!request_region(HDAPS_LOW_PORT, HDAPS_NR_PORTS, "ibm_hdaps"))
> return -ENXIO;
> @@ -367,7 +357,6 @@
> }
>
> if (0) for (i = 0; i < 50; i++) {
> - int j;
> unsigned long tmp;
> accelerometer_read(&data);
> printk(KERN_WARNING "state = %d\n", data.state);
> @@ -405,8 +394,3 @@
> module_init(ibm_hdaps_init);
> module_exit(ibm_hdaps_exit);
>
> -MODULE_LICENSE("GPL");
> -MODULE_AUTHOR("Jesper Juhl");
> -
> -MODULE_DESCRIPTION("IBM ThinkPad Accelerometer driver");
> -MODULE_VERSION("0.2");

> /*
> * Driver for IBM HDAPS (HardDisk Active Protection system)
> *
> * Based on the document by Mark A. Smith available at
> * http://www.almaden.ibm.com/cs/people/marksmith/tpaps.html
> *
> * Copyright (c) 2005 Jesper Juhl <jesper.juhl@gmail.com>
> *
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License as published by
> * the Free Software Foundation; either version 2 of the License, or
> * (at your option) any later version.
> *
> * This program is distributed in the hope that it will be useful,
> * but WITHOUT ANY WARRANTY; without even the implied warranty of
> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> * GNU General Public License for more details.
> *
> * You should have received a copy of the GNU General Public License
> * along with this program; if not, write to the Free Software
> * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
> */
>
> #ifndef __IBM_HDAPS_H__
> #define __IBM_HDAPS_H__
>
> #define HDAPS_LOW_PORT 0x1600 /* first port used by accelerometer */
> #define HDAPS_NR_PORTS 0x30 /* nr of ports total - 0x1600 through 0x162f */
>
> #define STATE_STALE 0x00 /* accelerometer data is stale */
> #define STATE_FRESH 0x50 /* accelerometer data fresh fresh */
>
> #define REFRESH_ASYNC 0x00 /* do asynchronous refresh */
> #define REFRESH_SYNC 0x01 /* do synchronous refresh */
>
> /*
> * where to find the various accelerometer data
> * these map to the members of struct hdaps_accel_data
> */
> #define HDAPS_PORT_STATE 0x1611
> #define HDAPS_PORT_XACCEL 0x1612
> #define HDAPS_PORT_YACCEL 0x1614
> #define HDAPS_PORT_TEMP 0x1616
> #define HDAPS_PORT_XVAR 0x1617
> #define HDAPS_PORT_YVAR 0x1619
> #define HDAPS_PORT_TEMP2 0x161b
> #define HDAPS_PORT_UNKNOWN 0x161c
> #define HDAPS_PORT_KMACCT 0x161d
>
> #endif /* __IBM_HDAPS_H__ */

> --- Makefile.org 2005-07-04 07:58:53.000000000 +0200
> +++ Makefile 2005-07-04 07:57:50.000000000 +0200
> @@ -26,3 +26,7 @@
> install -d $(KMISC)
> install -m 644 -c $(addsuffix .ko,$(list-m)) $(KMISC)
> /sbin/depmod -a
> +
> +uninstall:
> + rm -f $(KMISC)/$(addsuffix .ko,$(list-m))
> + /sbin/depmod -a

--
Andrey Panin | Linux and UNIX system administrator
pazke@donpac.ru | PGP key: wwwkeys.pgp.net

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