diff options
| author | Quinn Tran <quinn.tran@cavium.com> | 2017-12-28 12:33:18 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-01-03 23:41:05 -0500 |
| commit | 1586e07a46b8e9fefdda22f763cfb1ba58f9c3cc (patch) | |
| tree | 547e42498fe5a903534cfb5403a0ae5545dd8fea /drivers/scsi/qla2xxx | |
| parent | d2b292c3f6fdef5819a276acd64915bae6384a7f (diff) | |
scsi: qla2xxx: Use shadow register for ISP27XX
For ISP27XX, use shadow register to read FW provided REQQ's consumer
index. The shadow register is dma'ed by firmware.
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')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_iocb.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 2d523b71cc1f..d1dfa784d895 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -2158,7 +2158,9 @@ __qla2x00_alloc_iocbs(struct qla_qpair *qpair, srb_t *sp) skip_cmd_array: /* Check for room on request queue. */ if (req->cnt < req_cnt + 2) { - if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) + if (qpair->use_shadow_reg) + cnt = *req->out_ptr; + else if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) cnt = RD_REG_DWORD(®->isp25mq.req_q_out); else if (IS_P3P_TYPE(ha)) cnt = RD_REG_DWORD(®->isp82.req_q_out); |