IB/ipath: Fix and recover TXE piobuf and PBC parity errors

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We can sometimes trigger parity errors due to processor speculative
reads to our write-combined memory (mostly seen on Woodcrest).   Add a
stats counter for these.

Factored out the sendbuffererror buffer cancellation code so it can be
used in the new handling; suppress likely subsequent error messages if
within two jiffies of the cancellation.

Also restore 2 dropped TXE lines on hwe_bitsextant noticed while
debugging.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

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This commit is contained in:

Bryan O'Sullivan 2006-09-28 09:00:18 -07:00 • committed by Roland Dreier

parent 510847750c

commit 89d1e09b6a

5 changed files with 124 additions and 52 deletions

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3

drivers/infiniband/hw/ipath/ipath_common.h

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32

drivers/infiniband/hw/ipath/ipath_iba6110.c

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37

drivers/infiniband/hw/ipath/ipath_iba6120.c

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98

drivers/infiniband/hw/ipath/ipath_intr.c

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6

drivers/infiniband/hw/ipath/ipath_kernel.h

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