cvs commit: src/sys/pci amdpm.c

Ruslan Ermilov ru at
Fri Dec 16 07:03:24 PST 2005

ru          2005-12-16 15:03:16 UTC

  FreeBSD src repository

  Modified files:
    sys/pci              amdpm.c 
  Fix PCI ID of the AMD-8111 System Management controller so it matches
  SMBus 1.0 and not SMBus 2.0.
  AMD-8111 hub (datasheet is publically available) implements both SMBus
  2.0 (a separate PCI device) and SMBus 1.0 (a subfunction of the System
  Management Controller device with the base I/O address is accessible
  through the CSR 0x58).  This driver only supports AMD-756 SMBus 1.0
  compatible devices.
  With the patched sysutils/xmbmon port (to also fix PCI ID and to enable
  smb(4) support), I now get:
  none0 at pci0:7:2: class=0x0c0500 card=0x746a1022 chip=0x746a1022 rev=0x02 hdr=0x00
      vendor   = 'Advanced Micro Devices (AMD)'
      device   = 'AMD-8111 SMBus 2.0 Controller'
      class    = serial bus
      subclass = SMBus
  amdpm0 at pci0:7:3:        class=0x068000 card=0x746b1022 chip=0x746b1022 rev=0x05 hdr=0x00
      vendor   = 'Advanced Micro Devices (AMD)'
      device   = 'AMD-8111 ACPI System Management Controller'
      class    = bridge
  amdpm0: <AMD 756/766/768/8111 Power Management Controller> port 0x10e0-0x10ff at device 7.3 on pci0
  smbus0: <System Management Bus> on amdpm0
  # mbmon -A -d
  Summary of Detection:
   * SMB monitor(s)[ioctl:AMD8111]:
    ** Winbond Chip W83627HF/THF/THF-A found at slave address: 0x50.
    ** Analog Dev. Chip ADM1027 found at slave address: 0x5C.
   * ISA monitor(s):
    ** Winbond Chip W83627HF/THF/THF-A found.
  I think the confusion comes from the fact that nobody really tried
  SMBus with xmbmon :-), since sysutils/xmbmon port doesn't come with
  SMBus support enabled, neither in FreeBSD 4, nor in later versions,
  so mbmon(1) was just showing the values from the Winbond sensors
  accessible through the ISA I/O method (mbmon -I), for me anyway.
  On my test machine, the amdpm(4) didn't even attach due to I/O port
  allocation failure (who knows what the hell it read from CSR 0x58
  of the SMBus 2.0 device :-), which isn't in the CSR space).
  I've also checked that uses correct PCI ID for SMBus
  1.0 of AMD-8111:
  i2c-amd756.c:   {PCI_VENDOR_ID_AMD, 0x746B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AMD8111 },
  This driver is analogous to our amdpm.c which supports SMBus 1.0
  AMD-756 and compatible devices, including SMBus 1.0 on AMD-8111.
  i2c-amd8111.c:  { 0x1022, 0x746a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
  This driver is analogous to nForce-2/3/4, i2c-nforce2.c, which
  supports SMBus 2.0, and which our amdpm.c does NOT support
  (SMBus 2.0 uses a different, ACPI-unified, API to talk to SMBus).
  At least I know for sure it doesn't work with my nForce3.  :-)
  (The xmbmon port will be fixed to correct the PCI ID too and to
  enable the smb(4) support.)
  Revision  Changes    Path
  1.17      +1 -1      src/sys/pci/amdpm.c

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