diff options
| author | Ralph Campbell <ralph.campbell@qlogic.com> | 2008-04-17 08:09:29 +0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-04-17 08:09:29 +0400 |
| commit | 9355fb6a064723c71e80e9c78de3140b43bfb52d (patch) | |
| tree | dd0fffeb6633aed6cb2c946a05bf33e05f2e9436 /drivers/infiniband/hw/ipath/ipath_stats.c | |
| parent | 2ba3f56eb402672ff83601b5990b219d39577636 (diff) | |
| download | linux-9355fb6a064723c71e80e9c78de3140b43bfb52d.tar.xz | |
IB/ipath: Add support for 7220 receive queue changes
Newer HCAs have a HW option to write a sequence number to each receive
queue entry and avoid a separate DMA of the tail register to memory.
This patch adds support for these changes.
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_stats.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_stats.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_stats.c b/drivers/infiniband/hw/ipath/ipath_stats.c index 57eb1d549785..adff2f10dc0e 100644 --- a/drivers/infiniband/hw/ipath/ipath_stats.c +++ b/drivers/infiniband/hw/ipath/ipath_stats.c @@ -136,6 +136,7 @@ static void ipath_qcheck(struct ipath_devdata *dd) struct ipath_portdata *pd = dd->ipath_pd[0]; size_t blen = 0; char buf[128]; + u32 hdrqtail; *buf = 0; if (pd->port_hdrqfull != dd->ipath_p0_hdrqfull) { @@ -174,17 +175,18 @@ static void ipath_qcheck(struct ipath_devdata *dd) if (blen) ipath_dbg("%s\n", buf); - if (pd->port_head != (u32) - le64_to_cpu(*dd->ipath_hdrqtailptr)) { + hdrqtail = ipath_get_hdrqtail(pd); + if (pd->port_head != hdrqtail) { if (dd->ipath_lastport0rcv_cnt == ipath_stats.sps_port0pkts) { ipath_cdbg(PKT, "missing rcv interrupts? " - "port0 hd=%llx tl=%x; port0pkts %llx\n", - (unsigned long long) - le64_to_cpu(*dd->ipath_hdrqtailptr), - pd->port_head, + "port0 hd=%x tl=%x; port0pkts %llx; write" + " hd (w/intr)\n", + pd->port_head, hdrqtail, (unsigned long long) ipath_stats.sps_port0pkts); + ipath_write_ureg(dd, ur_rcvhdrhead, hdrqtail | + dd->ipath_rhdrhead_intr_off, pd->port_port); } dd->ipath_lastport0rcv_cnt = ipath_stats.sps_port0pkts; } |