staging/rdma/hfi1: Fix QSFP memory read/write across 128 byte boundary

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The QSFP memory cache reads both lower and upper page 0H in one shot,
which leads to the address counter wrapping around to the beginning of
lower page 00H at byte 128, as defined by SFF-8636.
This patch fixes this by modifying the underlying QSFP read and writes
to avoid this wrap around.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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This commit is contained in:

Mike Marciniszyn 2016-02-03 14:31:05 -08:00 • committed by Doug Ledford

parent 76ef8c0798

commit c7cb7635d9

2 changed files with 49 additions and 23 deletions

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44

drivers/staging/rdma/hfi1/qsfp.c

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28

drivers/staging/rdma/hfi1/qsfp.h

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