[Nouveau] [Bug 69928] [NVAA] Boot of linux kernel 3.12-rc2 hangs

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Nov 9 12:34:35 PST 2013


https://bugs.freedesktop.org/show_bug.cgi?id=69928

--- Comment #16 from Ilia Mirkin <imirkin at alum.mit.edu> ---
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.

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