[Bug 1856724] [NEW] SB.PCI0.SMB0 device drivers unavailable

[Bug 1856724] [NEW] SB.PCI0.SMB0 device drivers unavailable

[Rafal Kupiec]

Public bug reported:

QEMU 4.2 introduces new device with this code:

static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
{
    Aml *scope = aml_scope("_SB.PCI0");
    Aml *dev = aml_device("SMB0");

    aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
    aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
    build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
    aml_append(scope, dev);
    aml_append(table, scope);
}

It is detected by Windows 10 as 'Unknown Device' and there is no driver available.
Please provide a working Windows driver or give ability to disable this device.

** Affects: qemu
     Importance: Undecided
         Status: New

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Title:
  SB.PCI0.SMB0 device drivers unavailable

Status in QEMU:
  New

Bug description:
  QEMU 4.2 introduces new device with this code:

  static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
  {
      Aml *scope = aml_scope("_SB.PCI0");
      Aml *dev = aml_device("SMB0");

      aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
      aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
      build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
      aml_append(scope, dev);
      aml_append(table, scope);
  }

  It is detected by Windows 10 as 'Unknown Device' and there is no driver available.
  Please provide a working Windows driver or give ability to disable this device.

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[Bug 1856724] Re: SB.PCI0.SMB0 device drivers unavailable

[Anastasios Vacharakis]

what is this shit?

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Title:
  SB.PCI0.SMB0 device drivers unavailable

Status in QEMU:
  New

Bug description:
  QEMU 4.2 introduces new device with this code:

  static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
  {
      Aml *scope = aml_scope("_SB.PCI0");
      Aml *dev = aml_device("SMB0");

      aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
      aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
      build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
      aml_append(scope, dev);
      aml_append(table, scope);
  }

  It is detected by Windows 10 as 'Unknown Device' and there is no driver available.
  Please provide a working Windows driver or give ability to disable this device.

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[Bug 1856724] Re: SB.PCI0.SMB0 device drivers unavailable

[Deorder]

I noticed this as well. Apparently it was introduced in the following
commit:

https://github.com/qemu/qemu/commit/ebe15582cafeb944a1c6e99aa526e81a1551c567

Saying:

---
pc: Add an SMB0 ACPI device to q35

This is so I2C devices can be found in the ACPI namespace.  Currently
that's only IPMI, but devices can be easily added now.

Adding the devices required some PCI information, and the bus itself
to be added to the PCMachineState structure.

Note that this only works on Q35, the ACPI for PIIX4 is not capable
of handling an SMBus device.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---

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Title:
  SB.PCI0.SMB0 device drivers unavailable

Status in QEMU:
  New

Bug description:
  QEMU 4.2 introduces new device with this code:

  static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
  {
      Aml *scope = aml_scope("_SB.PCI0");
      Aml *dev = aml_device("SMB0");

      aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
      aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
      build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
      aml_append(scope, dev);
      aml_append(table, scope);
  }

  It is detected by Windows 10 as 'Unknown Device' and there is no driver available.
  Please provide a working Windows driver or give ability to disable this device.

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https://bugs.launchpad.net/qemu/+bug/1856724/+subscriptions

[Bug 1856724] Re: SB.PCI0.SMB0 device drivers unavailable

[Rafal Kupiec]

Any progress? When will you provide a Windows driver for this and/or
ability to disable this device in Qemu?

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Title:
  SB.PCI0.SMB0 device drivers unavailable

Status in QEMU:
  New

Bug description:
  QEMU 4.2 introduces new device with this code:

  static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
  {
      Aml *scope = aml_scope("_SB.PCI0");
      Aml *dev = aml_device("SMB0");

      aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
      aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
      build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
      aml_append(scope, dev);
      aml_append(table, scope);
  }

  It is detected by Windows 10 as 'Unknown Device' and there is no driver available.
  Please provide a working Windows driver or give ability to disable this device.

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[Bug 1856724] Re: SB.PCI0.SMB0 device drivers unavailable

[Eric Corriveau]

I'm also having this issue on a Win 10 VM running on a unRaid server.

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Title:
  SB.PCI0.SMB0 device drivers unavailable

Status in QEMU:
  New

Bug description:
  QEMU 4.2 introduces new device with this code:

  static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
  {
      Aml *scope = aml_scope("_SB.PCI0");
      Aml *dev = aml_device("SMB0");

      aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
      aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
      build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
      aml_append(scope, dev);
      aml_append(table, scope);
  }

  It is detected by Windows 10 as 'Unknown Device' and there is no driver available.
  Please provide a working Windows driver or give ability to disable this device.

To manage notifications about this bug go to:
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[Bug 1856724] Re: SB.PCI0.SMB0 device drivers unavailable

[John Snow]

Hi, although this isn't my area of expertise, the bug caught my eye.
Peter Maydell points out that there is a commit that addresses this
issue:
https://github.com/qemu/qemu/commit/aefcaf9d1b3ebb30981627bd08f595211a648a62

It just never made its way back here to launchpad.

** Changed in: qemu
       Status: New => Fix Committed

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Title:
  SB.PCI0.SMB0 device drivers unavailable

Status in QEMU:
  Fix Committed

Bug description:
  QEMU 4.2 introduces new device with this code:

  static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
  {
      Aml *scope = aml_scope("_SB.PCI0");
      Aml *dev = aml_device("SMB0");

      aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
      aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
      build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
      aml_append(scope, dev);
      aml_append(table, scope);
  }

  It is detected by Windows 10 as 'Unknown Device' and there is no driver available.
  Please provide a working Windows driver or give ability to disable this device.

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[Bug 1856724] Re: SB.PCI0.SMB0 device drivers unavailable

[Laurent Vivier]

** Changed in: qemu
       Status: Fix Committed => Fix Released

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Title:
  SB.PCI0.SMB0 device drivers unavailable

Status in QEMU:
  Fix Released

Bug description:
  QEMU 4.2 introduces new device with this code:

  static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
  {
      Aml *scope = aml_scope("_SB.PCI0");
      Aml *dev = aml_device("SMB0");

      aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
      aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
      build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
      aml_append(scope, dev);
      aml_append(table, scope);
  }

  It is detected by Windows 10 as 'Unknown Device' and there is no driver available.
  Please provide a working Windows driver or give ability to disable this device.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1856724/+subscriptions