On 17/06/2011 20:00, Gilles Chanteperdrix wrote:
On 06/17/2011 04:05 PM, Jakub Nowacki wrote:
I've added my ID to the table in smi.c file as:
{PCI_DEVICE(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_5_3400_SERIES_LPC_MIN+0xa)}
Everything complies OK but during the startup I get message:
[ 2.137733] Xenomai: SMI-enabled chipset found
[ 2.137744] Xenomai: SMI workaround failed!
Should I do something extra apart from adding it to the table?
There are two reasons why it may not work:
- the way to globally disable SMIs has changed with the chipset version
you are using;
- the BIOS of your PC locks the SMI disabling bit.
So, the next step is to check the chipset datasheet.
Following the datasheet available at:
http://www.intel.com/Assets/PDF/datasheet/322169.pdf
SMI_EN—SMI Control and Enable Register has address: PMBASE + 30 (see p.
531), which seems to be the same as in 'smi.c' (PMBASE is 0x40-0x43; see
p. 460). Structure seems to be the same, namely, GBL_SMI_EN_BIT is the
first bit. However, SMI enable can be locked using SMI_LOC bit in
GEN_PMCON_1—General PM Configuration 1 Register
(PM—D31:F0) with Offset Address: A0h; see p. 513. Hence, this one can
potentially stop 'smi.c' from applying the workaround. Sorry for
slightly descriptive approach but I don't know 'smi.c' code that well to
fiddle with it.
Hope it helps slightly.
Best wishes,
Jakub
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