diff options
| author | Quinn Tran <quinn.tran@cavium.com> | 2017-06-13 20:47:24 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-27 21:21:41 -0400 |
| commit | 8abfa9e2268337cdcd458e24008345973328e2e2 (patch) | |
| tree | 01fa78608154bbc9e71650a9847167ef7b180ff9 /drivers/scsi/qla2xxx/qla_inline.h | |
| parent | af7bb3826a49b774332a5e8ff3f68877bdfd21c9 (diff) | |
scsi: qla2xxx: Add function call to qpair for door bell
Add call back to door bell for qpair. This help reduce access to
qla_hw_data structure, in order to reduce cach thrash.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_inline.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_inline.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h index bd8cb796f64e..9a2c86eacf44 100644 --- a/drivers/scsi/qla2xxx/qla_inline.h +++ b/drivers/scsi/qla2xxx/qla_inline.h @@ -352,3 +352,18 @@ qla_qpair_to_hint(struct qla_tgt *tgt, struct qla_qpair *qpair) return NULL; } + +static inline void +qla_83xx_start_iocbs(struct qla_qpair *qpair) +{ + struct req_que *req = qpair->req; + + req->ring_index++; + if (req->ring_index == req->length) { + req->ring_index = 0; + req->ring_ptr = req->ring; + } else + req->ring_ptr++; + + WRT_REG_DWORD(req->req_q_in, req->ring_index); +} |