diff options
| author | Mike Marciniszyn <mike.marciniszyn@qlogic.com> | 2011-01-10 17:42:19 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2011-01-10 17:42:19 -0800 |
| commit | 0a43e117221702b08a023d6aa1a31ac30e40866b (patch) | |
| tree | e5977969e7035117ec6c19fac4adfcf69a2ff675 /drivers/infiniband/hw/qib/qib_iba7322.c | |
| parent | 9d5b243f24212966d6d06058f96b2b1a22482f59 (diff) | |
IB/qib: Add receive header queue size module parameters
The receive header queue sizes need to modified for performance
tuning. Three module parameters are added to support this.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_iba7322.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_iba7322.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index 9031cd82e87..b35676f4437 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -111,6 +111,21 @@ static ushort qib_singleport; module_param_named(singleport, qib_singleport, ushort, S_IRUGO); MODULE_PARM_DESC(singleport, "Use only IB port 1; more per-port buffer space"); +/* + * Receive header queue sizes + */ +static unsigned qib_rcvhdrcnt; +module_param_named(rcvhdrcnt, qib_rcvhdrcnt, uint, S_IRUGO); +MODULE_PARM_DESC(rcvhdrcnt, "receive header count"); + +static unsigned qib_rcvhdrsize; +module_param_named(rcvhdrsize, qib_rcvhdrsize, uint, S_IRUGO); +MODULE_PARM_DESC(rcvhdrsize, "receive header size in 32-bit words"); + +static unsigned qib_rcvhdrentsize; +module_param_named(rcvhdrentsize, qib_rcvhdrentsize, uint, S_IRUGO); +MODULE_PARM_DESC(rcvhdrentsize, "receive header entry size in 32-bit words"); + #define MAX_ATTEN_LEN 64 /* plenty for any real system */ /* for read back, default index is ~5m copper cable */ static char txselect_list[MAX_ATTEN_LEN] = "10"; @@ -3530,8 +3545,11 @@ static void qib_7322_config_ctxts(struct qib_devdata *dd) /* kr_rcvegrcnt changes based on the number of contexts enabled */ dd->cspec->rcvegrcnt = qib_read_kreg32(dd, kr_rcvegrcnt); - dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, - dd->num_pports > 1 ? 1024U : 2048U); + if (qib_rcvhdrcnt) + dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, qib_rcvhdrcnt); + else + dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, + dd->num_pports > 1 ? 1024U : 2048U); } static int qib_7322_get_ib_cfg(struct qib_pportdata *ppd, int which) @@ -6097,8 +6115,10 @@ static int qib_init_7322_variables(struct qib_devdata *dd) ppd++; } - dd->rcvhdrentsize = QIB_RCVHDR_ENTSIZE; - dd->rcvhdrsize = QIB_DFLT_RCVHDRSIZE; + dd->rcvhdrentsize = qib_rcvhdrentsize ? + qib_rcvhdrentsize : QIB_RCVHDR_ENTSIZE; + dd->rcvhdrsize = qib_rcvhdrsize ? + qib_rcvhdrsize : QIB_DFLT_RCVHDRSIZE; dd->rhf_offset = dd->rcvhdrentsize - sizeof(u64) / sizeof(u32); /* we always allocate at least 2048 bytes for eager buffers */ |