diff options
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_mbx.c')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_mbx.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c index 1c57c22..81e738d 100644 --- a/drivers/scsi/qla4xxx/ql4_mbx.c +++ b/drivers/scsi/qla4xxx/ql4_mbx.c @@ -697,8 +697,24 @@ int qla4xxx_get_firmware_status(struct scsi_qla_host * ha) return QLA_ERROR; } - ql4_printk(KERN_INFO, ha, "%ld firmware IOCBs available (%d).\n", - ha->host_no, mbox_sts[2]); + /* High-water mark of IOCBs */ + ha->iocb_hiwat = mbox_sts[2]; + DEBUG2(ql4_printk(KERN_INFO, ha, + "%s: firmware IOCBs available = %d\n", __func__, + ha->iocb_hiwat)); + + if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION) + ha->iocb_hiwat -= IOCB_HIWAT_CUSHION; + + /* Ideally, we should not enter this code, as the # of firmware + * IOCBs is hard-coded in the firmware. We set a default + * iocb_hiwat here just in case */ + if (ha->iocb_hiwat == 0) { + ha->iocb_hiwat = REQUEST_QUEUE_DEPTH / 4; + DEBUG2(ql4_printk(KERN_WARNING, ha, + "%s: Setting IOCB's to = %d\n", __func__, + ha->iocb_hiwat)); + } return QLA_SUCCESS; } |
