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Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on Lenovo X60 with coreboot

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On Thu, Apr 06, 2017 at 08:18:33AM +0200, Paul Menzel wrote:

> Indeed, that improves the situation. I still need to pass `force=1` to the
> module to get `/dev/tpm0`. No idea, why it’s not in included in Linux 4.9
> yet.

Fair point.. Jarkko - could you forward that patch to -stable?

> $ journalctl -k -o cat | grep tpm
> tpm_tis tpm_tis: 1.2 TPM (device-id 0x3202, rev-id 5)
> tpm tpm0: Issuing TPM_STARTUP
> tpm tpm0: [Hardware Error]: Adjusting reported timeouts: A 10000->10000us B
> 10000->10000us C 0->752000us D 0->752000us

There could be more relavent kernel messages than this, try
  grep -i tpm

?

> So do you have an idea, what “ACPI requirements” changed in the `tpm` module
> since Linux 3.16 to be loaded automatically?

We added direct ACPI binding to the driver in addition to PNP, so if
you have an ACPI table it goes down that path and does some additional
validation of what is in the TPM. The BIOS must provide a
acpi_dev_resource_memory and a ACPI_SIG_TPM2 for the ACPI entry at a
minimum.

There are FW_BUG prints if those fail, so check your dmesg closely?

http://lxr.free-electrons.com/source/drivers/char/tpm/tpm_tis.c#L250

If not, can you annotate in some printk's into tpm_tis_acpi_init and
recompile/re-test?

Jason

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Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on Lenovo  X60 with coreboot "Maciej S. Szmigiero" <mail@maciej.szmigiero.name> - 2017-04-05 13:30 +0200
  Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on  Lenovo X60 with coreboot Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-04-05 15:50 +0200
  Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on Lenovo  X60 with coreboot Paul Menzel <pmenzel@molgen.mpg.de> - 2017-04-06 08:30 +0200
    Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on Lenovo  X60 with coreboot "Maciej S. Szmigiero" <mail@maciej.szmigiero.name> - 2017-04-06 14:00 +0200
    Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on  Lenovo X60 with coreboot Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2017-04-06 19:00 +0200
      Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on Lenovo  X60 with coreboot Paul Menzel <pmenzel@molgen.mpg.de> - 2017-04-06 20:30 +0200
        Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on  Lenovo X60 with coreboot Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2017-04-06 21:20 +0200
          Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on  Lenovo X60 with coreboot Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-04-07 22:20 +0200
            Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on Lenovo  X60 with coreboot Paul Menzel <pmenzel@molgen.mpg.de> - 2017-04-07 23:00 +0200
      Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on  Lenovo X60 with coreboot Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> - 2017-04-06 21:00 +0200
      Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on  Lenovo X60 with coreboot Denis 'GNUtoo' Carikli <GNUtoo@no-log.org> - 2017-04-08 13:30 +0200
        Re: [tpmdd-devel] Regression between Linux 3.16 and 4.8/4.9 on  Lenovo X60 with coreboot Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2017-04-08 22:30 +0200

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