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authorDave Olson <dave.olson@qlogic.com>2008-04-16 21:09:30 -0700
committerRoland Dreier <rolandd@cisco.com>2008-04-16 21:09:30 -0700
commit1d7c2e529fb6d4143d294ade7d99e29cb6b3775f (patch)
tree15bb2a68280fbefeca12ef1db4c47e9f0d386e86 /drivers/infiniband/hw/ipath/ipath_kernel.h
parent0ab6b2b9abb692919902edb6606c3b898f2dac17 (diff)
IB/ipath: Enable reduced PIO update for HCAs that support it.
Newer HCAs have a threshold counter to reduce the number of DMAs the chip makes to update the PIO buffer availability status bits. This patch enables the feature. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_kernel.h')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_kernel.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h
index 2447e85bf4f..cef3296efb9 100644
--- a/drivers/infiniband/hw/ipath/ipath_kernel.h
+++ b/drivers/infiniband/hw/ipath/ipath_kernel.h
@@ -349,6 +349,7 @@ struct ipath_devdata {
u32 ipath_lastrpkts;
/* pio bufs allocated per port */
u32 ipath_pbufsport;
+ u32 ipath_pioupd_thresh; /* update threshold, some chips */
/*
* number of ports configured as max; zero is set to number chip
* supports, less gives more pio bufs/port, etc.