Re: environmental monitoring

Re: environmental monitoring

[Eric Brower]

Clint Adams wrote:
>>> On a Netra t1 105, it is possible to use the envctrl kernel module
>>> to read the CPU temperature.  Is this possible with a Netra T1 AC200?
>>>
>>Not currently.
> 
> 
> What needs to be done to adapt the driver?

A driver needs to learn about the OBP format used on a particular 
platform for environmental monitoring.  In the case of the T1/200 it may 
be similar enough to the existing bbc_envctrl driver (written for an 
SB1000) that you can adapt it for use on your system.  At the very 
least, you'll have to remove the bbc_present() test.

If you want temperatures available to userspace, additional 
modifications will be required as well.  I believe the current 
bbc_envctrl driver monitors, but does not export, this information.

If you are interested in doing this work I suggest you post to the 
development list (ultralinux@vger.kernel.org).

E

Re: environmental monitoring

[Clint Adams]

> A driver needs to learn about the OBP format used on a particular 
> platform for environmental monitoring.  In the case of the T1/200 it may 
> be similar enough to the existing bbc_envctrl driver (written for an 
> SB1000) that you can adapt it for use on your system.  At the very 
> least, you'll have to remove the bbc_present() test.
> 
> If you want temperatures available to userspace, additional 
> modifications will be required as well.  I believe the current 
> bbc_envctrl driver monitors, but does not export, this information.
> 
> If you are interested in doing this work I suggest you post to the 
> development list (ultralinux@vger.kernel.org).

I'm interested in getting this working, but I have very little idea of
what I'm doing.

Re: environmental monitoring

[Ricky Beam]

On Tue, 23 Dec 2003, Eric Brower wrote:
>A driver needs to learn about the OBP format used on a particular
>platform for environmental monitoring.  In the case of the T1/200 it may
>be similar enough to the existing bbc_envctrl driver (written for an
>SB1000) that you can adapt it for use on your system.  At the very
>least, you'll have to remove the bbc_present() test.

Umm, the Netra T1 doesn't have an "envctrl" -- or a "SUNW,rasctrl" on an
ebus.

(pruned prtconf -pv from solaris -- linux doesn't see anything behind pmu)
            Node 0xf00793b8
                name:  'pmu'
                compatible: 'pci10b9,7101' + 'pciclass,000000'
                device-id:  00007101
                vendor-id:  000010b9

                Node 0xf0079b80
                    compatible: 'i2c-smbus'
                    name:  'i2c'

                    Node 0xf007b018
                        compatible: 'i2c-max1617'
                        name:  'temperature'

                    Node 0xf007b2c0 (&0xf007b378)
                        compatible: 'i2c-at34c02'
                        name:  'dimm'

                    Node 0xf007b430
                        compatible: 'i2c-at24c64'
                        device_type:  'nvram'
                        name:  'i2c-nvram'

                        Node 0xf007bf48
                            device_type:  'idprom'
                            name:  'idprom'

                    Node 0xf007c1fc
                        compatible: 'i2c-at24c64'
                        name:  'motherboard-fru'

                Node 0xf007cd94
                    compatible: 'SUNW,smbus-fan-control'
                    name:  'fan-control'

Re: environmental monitoring

[Clint Adams]

> Umm, the Netra T1 doesn't have an "envctrl" -- or a "SUNW,rasctrl" on an
> ebus.

I don't think that's important; all I want is the CPU temperature.

This is from a 105 (where the linux 2.6.0 envctrl module works):

System Configuration:  Sun Microsystems  sun4u
Memory size: 1024 Megabytes
System Peripherals (Software Nodes):

SUNW,UltraSPARC-IIi-cEngine
    packages (driver probably installed)
        terminal-emulator (driver probably installed)
        deblocker (driver probably installed)
        obp-tftp (driver probably installed)
        disk-label (driver probably installed)
        ufs-file-system (driver probably installed)
        cdfs (driver probably installed)
        SUNW,builtin-drivers (driver probably installed)
        sun-keyboard (driver probably installed)
    chosen (driver probably installed)
    openprom (driver probably installed)
        client-services (driver probably installed)
    options (driver probably installed)
    aliases (driver probably installed)
    memory (driver probably installed)
    virtual-memory (driver probably installed)
    pci (driver probably installed)
        pci (driver probably installed)
            ebus (driver probably installed)
                auxio (driver probably installed)
                power (driver probably installed)
                SUNW,pll (driver probably installed)
                su (driver probably installed)
                su (driver probably installed)
                ecpp (driver probably installed)
                fdthree (driver probably installed)
                eeprom (driver probably installed)
                flashprom (driver probably installed)
                watchdog (driver probably installed)
                display7seg (driver probably installed)
                beeper (driver probably installed)
                flashprom (driver probably installed)
                flashprom (driver probably installed)
                i2c (driver probably installed)
                    adc (driver probably installed)
                    gpio (driver probably installed)
                    gpio (driver probably installed)
                i2c (driver probably installed)
                SUNW,lom (driver probably installed)
            network (driver probably installed)
            scsi (driver probably installed)
                disk (driver probably installed)
                tape (driver probably installed)
            network (driver probably installed)
        pci (driver probably installed)
            pci (driver probably installed)
                ide (driver probably installed)
                    disk (driver probably installed)
                    cdrom (driver probably installed)
    SUNW,UltraSPARC-IIi (driver probably installed)

And this is from a 200 (where it doesn't)

System Configuration:  Sun Microsystems  sun4u
Memory size: 512 Megabytes
System Peripherals (Software Nodes):

SUNW,UltraAX-i2
    packages (driver probably installed)
        terminal-emulator (driver probably installed)
        deblocker (driver probably installed)
        obp-tftp (driver probably installed)
        disk-label (driver probably installed)
        SUNW,builtin-drivers (driver probably installed)
        dropins (driver probably installed)
        kbd-translator (driver probably installed)
    chosen (driver probably installed)
    openprom (driver probably installed)
        client-services (driver probably installed)
    options (driver probably installed)
    aliases (driver probably installed)
    memory (driver probably installed)
    virtual-memory (driver probably installed)
    pci (driver probably installed)
        pci (driver probably installed)
            ebus (driver probably installed)
                flashprom (driver probably installed)
                eeprom (driver probably installed)
                idprom (driver probably installed)
                SUNW,lomh (driver probably installed)
            pmu (driver probably installed)
                i2c (driver probably installed)
                    temperature (driver probably installed)
                    dimm (driver probably installed)
                    dimm (driver probably installed)
                    i2c-nvram (driver probably installed)
                        idprom (driver probably installed)
                    motherboard-fru (driver probably installed)
                fan-control (driver probably installed)
            lomp (driver probably installed)
            isa (driver probably installed)
                power (driver probably installed)
                serial (driver probably installed)
                serial (driver probably installed)
            network (driver probably installed)
            usb (driver probably installed)
            ide (driver probably installed)
                disk (driver probably installed)
                cdrom (driver probably installed)
            network (driver probably installed)
            usb (driver probably installed)
        pci (driver probably installed)
            scsi (driver probably installed)
                disk (driver probably installed)
                tape (driver probably installed)
            scsi (driver probably installed)
                disk (driver probably installed)
                tape (driver probably installed)
    SUNW,UltraSPARC-IIe (driver probably installed)

Re: environmental monitoring

[Eric]

Clint Adams <schizo@debian.org> wrote:

> > Looking at the prtconf output from the T1/200 and the SB-1000 (for which
the
> > bbc_envctrl driver was written), it is clear no current driver will
support
> > this environmental monitoring implementation.  However, if you simply want
the
> > CPU temperature you should be able to use the LOM console to retrieve
this
> > information, independent of the host OS (though Solaris may be required
for
> > initial LOM configuration).  For anything more, you'll likely have to
wait
> > until a developer gets a hold of the hardware and decides to take a try.
> 
> I want it from Debian userland, not the LOM console.  Are "SUNW,lomh"
> and "lomp" relevant?  

Perhaps in an ancillary way-- I really don't know much about the LOM
implementation.  

> Is the information likely to be accessed through
> pmu/i2c/temperature ?

More specifically, .../pmu/i2c likely is the interface to the I2C bus and
.../pmu/i2c/temperature describes the I2C client address at which the sensor
(a max1617) can be addressed.  

E