diff options
| author |   Kamenee Arumugam <kamenee.arumugam@intel.com> | 2018-02-01 10:52:28 -0800 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-02-01 15:43:30 -0700 |
| commit | 0719007663ce2d5da653ec1dc3bcfe2ab681b964 (patch) | |
| tree | d5433c8d8618a90741963986cf9c105b7e75e75c /drivers/infiniband/hw/hfi1/chip.h | |
| parent | IB/hfi1: Do not override given pcie_pset value (diff) | |
| download | linux-dev-0719007663ce2d5da653ec1dc3bcfe2ab681b964.tar.xz linux-dev-0719007663ce2d5da653ec1dc3bcfe2ab681b964.zip | |
IB/hfi1: Convert PortXmitWait/PortVLXmitWait counters to flit times
HFI's counters SendWaitCnt and SendWaitVlCnt are in units
of TXE cycle time (at 805MHz). OPA counters PortXmitWait and
PortVLXmtWait are in units of flit times.
Convert the counter values to flit units using following
conversion formula:
PortXmitWait =
SendWaitCnt * 2 * (4 /link_width) * (25 Gbps /link_speed)
PortVLXmitWait =
SendWaitVLCnt * 2 * (4 /link_width) * (25 Gbps /link_speed)
At link up or downgrade events, the link width can change. To ensure
accurate counter calculations, sample the counters after the events,
during counter requests, and then aggregate the OPA counters.
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Kamenee Arumugam <kamenee.arumugam@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/chip.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/chip.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/hfi1/chip.h b/drivers/infiniband/hw/hfi1/chip.h index 21fca8ec5076..c0d70f255050 100644 --- a/drivers/infiniband/hw/hfi1/chip.h +++ b/drivers/infiniband/hw/hfi1/chip.h @@ -736,8 +736,8 @@ int read_8051_config(struct hfi1_devdata *, u8, u8, u32 *); int start_link(struct hfi1_pportdata *ppd); int bringup_serdes(struct hfi1_pportdata *ppd); void set_intr_state(struct hfi1_devdata *dd, u32 enable); -void apply_link_downgrade_policy(struct hfi1_pportdata *ppd, - int refresh_widths); +bool apply_link_downgrade_policy(struct hfi1_pportdata *ppd, + bool refresh_widths); void update_usrhead(struct hfi1_ctxtdata *rcd, u32 hd, u32 updegr, u32 egrhd, u32 intr_adjust, u32 npkts); int stop_drain_data_vls(struct hfi1_devdata *dd); |