APIC vs PIC on Thinkpad r50p (Pentium-M)

[Hamie]

I have a Pentium-M based Thinkpad r50p. 2 problems occur when using a 
kernel compiled with local APIC for uniprocessors.

1. Although the local APIC is detected, it doesn't get used. (dmesg 
appended below).

2. When local APIC is enabled, then the poweroff doesn't actually 
poweroff... e.g. shutdpown -h leaves the fan spinning, and presumably 
other things wit hpower as well.

Anyone know why

1. PIC is used instead of APIC?
2. Why no power off?

Are these due to the ACPI errors indicated in the dmeag output?


TIA

Hamish Marson.,


DMI present.
IBM machine detected. Enabling interrupts during APM calls.
IBM machine detected. Disabling SMBus accesses.
ACPI: RSDP (v002 IBM                                       ) @ 0x000f6df0
ACPI: XSDT (v001 IBM    TP-1R    0x00003030  LTP 0x00000000) @ 0x1ff6b28d
ACPI: FADT (v003 IBM    TP-1R    0x00003030 IBM  0x00000001) @ 0x1ff6b300
ACPI: SSDT (v001 IBM    TP-1R    0x00003030 MSFT 0x0100000e) @ 0x1ff6b4b4
ACPI: ECDT (v001 IBM    TP-1R    0x00003030 IBM  0x00000001) @ 0x1ff76dfc
ACPI: TCPA (v001 IBM    TP-1R    0x00003030 PTL  0x00000001) @ 0x1ff76e4e
ACPI: BOOT (v001 IBM    TP-1R    0x00003030  LTP 0x00000001) @ 0x1ff76fd8
ACPI: DSDT (v001 IBM    TP-1R    0x00003030 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0x1008
Built 1 zonelists
Kernel command line: BOOT_IMAGE=Linux-2.6.7 ro root=302 
acpi_sleep=s3_bios video=radeonfb:1600x1200-16@85 apm=power-off
Local APIC disabled by BIOS -- reenabling.
Found and enabled local APIC!
Initializing CPU#0
PID hash table entries: 2048 (order 11: 16384 bytes)
Detected 1595.005 MHz processor.
Using pmtmr for high-res timesource
Console: colour VGA+ 80x25
Memory: 515144k/523648k available (2236k kernel code, 7736k reserved, 
939k data, 148k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay loop... 3162.11 BogoMIPS
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
CPU:     After generic identify, caps: a7e9fbbf 00000000 00000000 00000000
CPU:     After vendor identify, caps: a7e9fbbf 00000000 00000000 00000000
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 1024K
CPU:     After all inits, caps: a7e9fbbf 00000000 00000000 00000040
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: Intel(R) Pentium(R) M processor 1600MHz stepping 05
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 1594.0538 MHz.
..... host bus clock speed is 99.0658 MHz.
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xfd8d6, last bus=8
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
ACPI: Subsystem revision 20040326
tbxface-0117 [03] acpi_load_tables      : ACPI Tables successfully acquired
Parsing all Control 
Methods:..............................................................................................................................................
..........................................................................................................................................................................
...............................................................................
Table [DSDT](id F005) - 1322 Objects with 63 Devices 391 Methods 20 Regions
Parsing all Control Methods:.
Table [SSDT](id F003) - 1 Objects with 0 Devices 1 Methods 0 Regions
ACPI Namespace successfully loaded at root c045fe1c
ACPI: IRQ9 SCI: Edge set to Level Trigger.
evxfevnt-0093 [04] acpi_enable           : Transition to ACPI mode 
successful
evgpeblk-0867 [06] ev_create_gpe_block   : GPE 00 to 31 [_GPE] 4 regs at 
0000000000001028 on int 9
evgpeblk-0925 [06] ev_create_gpe_block   : Found 0 Wake, Enabled 1 
Runtime GPEs in this block
ACPI: Found ECDT
Completing Region/Field/Buffer/Package 
initialization:....................................................................................................................
...........................................................................................................................................
Initialized 19/20 Regions 123/123 Fields 67/67 Buffers 46/46 Packages 
(1332 nodes)
Executing all Device _STA and_INI 
methods:....................................................... 
exfldio-0143 [22] ex_setup_region       : Field [PWKI] access width (4 b
ytes) too large for region [U7CS] (length 2)
exfldio-0155 [22] ex_setup_region       : Field [PWKI] 
Base+Offset+Width 0+0+4 is beyond end of region [U7CS] (length 2)
exfldio-0179: *** Warning: The ACPI AML in your computer contains 
errors, please nag the manufacturer to correct it.
exfldio-0182: *** Warning: Allowing relaxed access to fields; turn on 
CONFIG_ACPI_DEBUG for details.
exfldio-0143 [22] ex_setup_region       : Field [PWKI] access width (4 
bytes) too large for region [U7CS] (length 2)
exfldio-0155 [22] ex_setup_region       : Field [PWKI] 
Base+Offset+Width 0+0+4 is beyond end of region [U7CS] (length 2)
exfldio-0143 [22] ex_setup_region       : Field [PWUC] access width (4 
bytes) too large for region [U7CS] (length 2)
exfldio-0155 [22] ex_setup_region       : Field [PWUC] 
Base+Offset+Width 0+0+4 is beyond end of region [U7CS] (length 2)
exfldio-0143 [22] ex_setup_region       : Field [PWUC] access width (4 
bytes) too large for region [U7CS] (length 2)
exfldio-0155 [22] ex_setup_region       : Field [PWUC] 
Base+Offset+Width 0+0+4 is beyond end of region [U7CS] (length 2)
....
59 Devices found containing: 59 _STA, 8 _INI methods
ACPI: Interpreter enabled
ACPI: Using PIC for interrupt routing
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 9 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Root Bridge [PCI0] (00:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: Embedded Controller [EC] (gpe 28)
ACPI: Power Resource [PUBS] (on)

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/