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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [NVAA] Boot of linux kernel 3.12-rc2 hangs"
href="https://bugs.freedesktop.org/show_bug.cgi?id=69928#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [NVAA] Boot of linux kernel 3.12-rc2 hangs"
href="https://bugs.freedesktop.org/show_bug.cgi?id=69928">bug 69928</a>
from <span class="vcard"><a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> <span class="fn">Ilia Mirkin</span></a>
</span></b>
<pre>FTR, the trace contains:
[1] 698.683063 MMIO32 R 0x088068 0x00810005 PPCI.MSI_HEAD => { CAP_ID = MSI |
NEXT_CAP_PTR = 0 | ENABLE | QMASK = 0 | QSIZE = 0 | 64BIT }
[1] 698.683072 MMIO8 W 0x088068 0x000000ff PPCI.MSI_HEAD <= { CAP_ID = 0xff |
NEXT_CAP_PTR = 0 | QMASK = 0 | QSIZE = 0 }
and then later
[1] 699.766366 MMIO32 R 0x000100 0x80000000 PMC.INTR_HOST => { SOFTWARE }
[1] 699.766375 MMIO32 W 0x000100 0x00000000 PMC.INTR_HOST <= { 0 }
[1] 699.766434 MMIO8 W 0x088068 0x000000ff PPCI.MSI_HEAD <= { CAP_ID = 0xff |
NEXT_CAP_PTR = 0 | QMASK = 0 | QSIZE = 0 }
[1] 699.766443 MMIO32 W 0x000140 0x00000000 PMC.INTR_EN_HOST <= { 0 }
etc. So the blob does enable MSI on NVAA.</pre>
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