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Mark D. Studebaker
4b316e9f0d
Klaus Woltereck <kw42@gmx.de> git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1404 7894878c-1315-0410-8ee3-d5d059ff63e0
109 lines
3.8 KiB
Plaintext
109 lines
3.8 KiB
Plaintext
M7101 - SMBus Support for ALi M15x3 based motherboards.
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For Asus P4B motherboards, use the p4b_smbus module;
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see the file README.p4b.
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--------------------------------------------------------
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Quick Start (2.4 kernels only):
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Verify that hotplug is enabled in your kernel (general setup)
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and reconfigure/rebuild/reinstall kernel if not
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"lspci" to verify that 7101 device is not present
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"make"
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(as root) "make install"
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(as root) "insmod m7101"
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"lspci" to verify that 7101 device is present
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--------------------------------------------------------
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--------------------------------------------------------
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Version 0.2 for 2.4.0-testx kernels.
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Mark D. Studebaker <mdsxyz123@yahoo.com>
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*** You must have 'Support for hot-pluggable devices' enabled
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*** in your kernel (under 'general setup') for this module to work!!
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For 2.2 and early 2.3 kernels you must use version 0.1;
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version 0.2 will not work.
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Version 0.1 does not use the kernel hotplug facility.
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Obtain version 0.1 here:
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README: http://www.netroedge.com/~lm78/misc/README-m7101.txt
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source and README: http://www.netroedge.com/~lm78/misc/m7101-0.1.tar.gz
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--------------------------------------------------------
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Notes below for the 0.2 version, MDS.
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--------------------------------------------------------
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Default I/O addresses are 0xe800 for SMBus and 0xec00 for ACPI.
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These can be changed at module insertion.
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For example:
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insmod m7101 smb_io=0x5000 acpi_io=0x4000
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--------------------------------------------------------
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Notes below from the 0.1 version, B. Kohl.
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--------------------------------------------------------
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This module was written to enable SMBus support on ALi M15x3 chipset based
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motherboards. Although it was written for and tested on Gigabytes GA-5AX
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it should work on any M15x3 chipset based board.
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Probably most people trying this software on a GA-5AX will be utterly
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disappointed. We have seen no sensor chips on this board - only DIMMs
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were connected to the SMBus. If you are trying to make lm_sensors read
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temperature and voltage values you will be pretty lost.
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CAVEAT: To perform it's task this module needs to manipulate PCI-config
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data and device structures on a very low level. This bears the risk of
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causing havoc to your system in case anything goes wrong. Use this soft-
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ware absolutely at your own risk.
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Installation:
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Untar the m7101.tgz file into an appropriate location and cd into the
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m7101 subdirectory. Then type "make" to build the module file 'm7101.o'.
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To insert it type
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$ insmod m7101.o
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as root.
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If everything goes well (no error messages) you will see a description like
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the following when doing 'lspci -v':
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00:03.0 Non-VGA unclassified device: Acer Laboratories Inc. [ALi] M7101 PMU
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Flags: medium devsel
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I/O ports at 4000
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I/O ports at 5000
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and find an entry in the proc filesystem under /proc/bus/pci/00/03.0.
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Removing the module removes the M7101 device from the proc file system
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and switches the SMBus support off.
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The lm_sensors software now should be able to access devices on the
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motherboard's SMBus through the M7101.
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Values for the ACPI-IO port (normally 0x4000) and the SMBus-IO port
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(normally 0x5000) can be specified using the parameters acpi_io and
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smbus_io respectively on the insmod command line.
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The module defaults to ports 0xec00 and 0xe800.
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In case the module does not load you might want to switch on debugging
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by uncommenting the second CFLAGS-line (with the -DM7101_DEBUG switch)
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in the Makefile.
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This module was written to activate SMBus support. I don't know neither
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have I tested wether it works with the software from the ACPI project.
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Note: Egcs compilers with versions below 2.95.2 do not compile properly.
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Use either 2.95.2 or gcc 2.7.2.x.
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I have tested this module with 2.2 kernels up to version 2.2.14.
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I wish to thank Frank Bauer for his help with this module.
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Burkhard Kohl (burkhard.kohl@gmx.de)
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