[Bug 86566] New: [NV96] nouveau_pmops_suspend returns -16

[Bug 86566] New: [NV96] nouveau_pmops_suspend returns -16

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=86566

            Bug ID: 86566
           Summary: [NV96] nouveau_pmops_suspend returns -16
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: pierre.morrow-GANU6spQydw@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 109842
  --> https://bugs.freedesktop.org/attachment.cgi?id=109842&action=edit
dmesg with noaccel=1 config=NvForcePost=1

Hardware:
* 9600M GT (NV96)
* 9400M (NVAC)

Tested on
http://cgit.freedesktop.org/~darktama/nouveau/commit/?id=8c83f75747abb996509d01d30104fe820eae9d67

The NV96 card fails to suspend, with nouveau_pmops_suspend returning -16.
PDISPLAY.CHANNEL[0].STAT (0x610200) value is not the one expected after the
channel deactivation (see nv50_disp_core_fini in core/engine/disp/nv50.c).

I compared mmiotraces from Nouveau and the blob. 0x610200 default values differ
greatly - for Nouveau: 0x0d050029, for Nvidia: 0x48000008 - if
config=NvForcePost=1 isn't given (the blob is running it by default, not
Nouveau); adding ForcePost doesn't help. There are some differences in SOR and
PIOR caps but getting them to match the blob ones doesn't help.

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[Bug 86566] [NV96] nouveau_pmops_suspend returns -16

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=86566

--- Comment #1 from Pierre Moreau <pierre.morrow-GANU6spQydw@public.gmane.org> ---
Still an issue with latest Git. Any ideas on what could go wrong / how to
proceed - apart from shamelessly copy/pasting the blob :D -?

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[Bug 86566] [NV96] nouveau_pmops_suspend returns -16

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=86566

Pierre Moreau <pierre.morrow-GANU6spQydw@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Pierre Moreau <pierre.morrow-GANU6spQydw@public.gmane.org> ---
Same fix as for #86537.

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