Re: Strange interpreter behaviour

Tue, 17 Jan 2006 04:40:36 -0800 

Sound like \_SB.INV7 is a bit into a GPIO.
More, the associated OR is defined like that:
OperationRegion (GPIO, SystemIO, IO2B, 0x40) 
Note that IO2B is given here:
  OperationRegion (BIOS, SystemMemory, 0x1FF50064, 0xFF)
  Field (BIOS, ByteAcc, NoLock, Preserve)
  {
      SS1,    1,
      SS2,    1,
      SS3,    1,
      SS4,    1,
      Offset (0x01),
      IOST,   16,
      SPIO,   16,
      PMBS,   16,
      PMLN,   8,
      SMBS,   16,
      SMLN,   8,
      IO1B,   16,
      IO1L,   8,
      IO2B,   16,
      IO2L,   8,
      TOPM,   32,
      ROMS,   32,

Therefore one think to check is that IO2B is set correctly to point to
the GPIO's, then look if the GPIO is configured as a GPO (not as a GPI).

For checking if IO2B is correct:
sudo dd if=/dev/mem bs=1c skip=536150130 count=2 | hexdump



Here it get's strange :
scotchmobil scotch # dd if=/dev/mem bs=1c skip=536150130 count=2
dd: reading `/dev/mem': Bad address
0+0 records in
0+0 records out



There is physical 512Mo RAM, isn't there? Or the DSDT have been
overriden?
How about a 'cat /proc/iomem'?


Jup, here is 512 MB of RAM, the DSDT hasen't been overidden.


[EMAIL PROTECTED] ~ $ cat /proc/iomem
00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000cffff : Video ROM
000f0000-000fffff : System ROM
00100000-1ff3ffff : System RAM
  00100000-004853d6 : Kernel code
  004853d7-00583193 : Kernel data
1ff40000-1ff4ffff : ACPI Tables
1ff50000-1fffffff : ACPI Non-volatile Storage
30000000-300003ff : 0000:00:1f.1
32000000-33ffffff : PCI CardBus #03
34000000-35ffffff : PCI CardBus #03
36000000-37ffffff : PCI CardBus #07
38000000-39ffffff : PCI CardBus #07
ce900000-de9fffff : PCI Bus #01
  d0000000-d7ffffff : 0000:01:00.0
    d0000000-d7ffffff : radeon
dea00000-deafffff : PCI Bus #02
e0000000-efffffff : 0000:00:00.0
ff800000-ff8fffff : PCI Bus #01
  ff8c0000-ff8dffff : 0000:01:00.0
  ff8f0000-ff8fffff : 0000:01:00.0
    ff8f0000-ff8fffff : radeon
ff900000-ff9fffff : PCI Bus #02
  ff900000-ff900fff : 0000:02:01.0
    ff900000-ff900fff : yenta_socket
  ff901000-ff901fff : 0000:02:01.1
    ff901000-ff901fff : yenta_socket
  ff9ee000-ff9eefff : 0000:02:02.0
  ff9ef800-ff9effff : 0000:02:01.2
    ff9ef800-ff9effff : ohci1394
  ff9f0000-ff9fffff : 0000:02:00.0
    ff9f0000-ff9fffff : tg3
ffaff400-ffaff4ff : 0000:00:1f.5
  ffaff400-ffaff4ff : Intel 82801DB-ICH4
ffaff800-ffaff9ff : 0000:00:1f.5
  ffaff800-ffaff9ff : Intel 82801DB-ICH4
ffaffc00-ffafffff : 0000:00:1d.7
  ffaffc00-ffafffff : ehci_hcd
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