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<body><span class="vcard"><a class="email" href="mailto:pmenzel+bugs.freedesktop@molgen.mpg.de" title="Paul Menzel <pmenzel+bugs.freedesktop@molgen.mpg.de>"> <span class="fn">Paul Menzel</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - Raven: pci_pm_suspend takes over 1 second"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107277">bug 107277</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEEDINFO
</td>
<td>NEW
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Raven: pci_pm_suspend takes over 1 second"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107277#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Raven: pci_pm_suspend takes over 1 second"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107277">bug 107277</a>
from <span class="vcard"><a class="email" href="mailto:pmenzel+bugs.freedesktop@molgen.mpg.de" title="Paul Menzel <pmenzel+bugs.freedesktop@molgen.mpg.de>"> <span class="fn">Paul Menzel</span></a>
</span></b>
<pre>(In reply to Paul Menzel from <a href="show_bug.cgi?id=107277#c3">comment #3</a>)
<span class="quote">> (In reply to Christian König from <a href="show_bug.cgi?id=107277#c2">comment #2</a>)</span >
[…]
<span class="quote">> > > amdgpu_device_ip_suspend [amdgpu] (694.390 ms @ 75.000977)
> >
> > This is hardware teardown and rather interesting and the only point we could
> > actually do something. Can you figure out what takes so long here?
>
> I’ll try to figure that out.</span >
I increased the maximum depth to 10, and according to the trace the loop in
`gfx_v9_0_enter_rlc_safe_mode()` is the culprit. Also, in all the function is
called three times.
static void gfx_v9_0_enter_rlc_safe_mode(struct amdgpu_device *adev)
{
uint32_t rlc_setting, data;
unsigned i;
if (adev->gfx.rlc.in_safe_mode)
return;
/* if RLC is not enabled, do nothing */
rlc_setting = RREG32_SOC15(GC, 0, mmRLC_CNTL);
if (!(rlc_setting & RLC_CNTL__RLC_ENABLE_F32_MASK))
return;
if (adev->cg_flags &
(AMD_CG_SUPPORT_GFX_CGCG | AMD_CG_SUPPORT_GFX_MGCG |
AMD_CG_SUPPORT_GFX_3D_CGCG)) {
data = RLC_SAFE_MODE__CMD_MASK;
data |= (1 << RLC_SAFE_MODE__MESSAGE__SHIFT);
WREG32_SOC15(GC, 0, mmRLC_SAFE_MODE, data);
/* wait for RLC_SAFE_MODE */
for (i = 0; i < adev->usec_timeout; i++) {
if (!REG_GET_FIELD(SOC15_REG_OFFSET(GC, 0,
mmRLC_SAFE_MODE), RLC_SAFE_MODE, CMD))
break;
udelay(1);
}
adev->gfx.rlc.in_safe_mode = true;
}
}</pre>
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