From 026fbd3aaae796d2457898497374b68f3477ee2f Mon Sep 17 00:00:00 2001 From: Nilesh Javali Date: Sun, 20 Jan 2013 23:50:58 -0500 Subject: [SCSI] qla4xxx: Quiesce driver activities while loopback Quiesce all different activities performed by driver upon the link events while loopback diagnostics is in progress. Signed-off-by: Nilesh Javali Signed-off-by: Vikas Chaudhary Signed-off-by: James Bottomley --- drivers/scsi/qla4xxx/ql4_isr.c | 36 +++++++++++++++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/qla4xxx/ql4_isr.c') diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c index 81909d949905..1b83dc283d2e 100644 --- a/drivers/scsi/qla4xxx/ql4_isr.c +++ b/drivers/scsi/qla4xxx/ql4_isr.c @@ -581,6 +581,33 @@ exit_prq_error: set_bit(DPC_RESET_HA, &ha->dpc_flags); } +/** + * qla4_83xx_loopback_in_progress: Is loopback in progress? + * @ha: Pointer to host adapter structure. + * @ret: 1 = loopback in progress, 0 = loopback not in progress + **/ +static int qla4_83xx_loopback_in_progress(struct scsi_qla_host *ha) +{ + int rval = 1; + + if (is_qla8032(ha)) { + if ((ha->idc_info.info2 & ENABLE_INTERNAL_LOOPBACK) || + (ha->idc_info.info2 & ENABLE_EXTERNAL_LOOPBACK)) { + DEBUG2(ql4_printk(KERN_INFO, ha, + "%s: Loopback diagnostics in progress\n", + __func__)); + rval = 1; + } else { + DEBUG2(ql4_printk(KERN_INFO, ha, + "%s: Loopback diagnostics not in progress\n", + __func__)); + rval = 0; + } + } + + return rval; +} + /** * qla4xxx_isr_decode_mailbox - decodes mailbox status * @ha: Pointer to host adapter structure. @@ -676,8 +703,10 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, case MBOX_ASTS_LINK_DOWN: clear_bit(AF_LINK_UP, &ha->flags); - if (test_bit(AF_INIT_DONE, &ha->flags)) + if (test_bit(AF_INIT_DONE, &ha->flags)) { set_bit(DPC_LINK_CHANGED, &ha->dpc_flags); + qla4xxx_wake_dpc(ha); + } ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__); qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKDOWN, @@ -840,6 +869,11 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, DEBUG2(ql4_printk(KERN_INFO, ha, "scsi:%ld: AEN %04x IDC Complete notification\n", ha->host_no, mbox_sts[0])); + + if (qla4_83xx_loopback_in_progress(ha)) + set_bit(AF_LOOPBACK, &ha->flags); + else + clear_bit(AF_LOOPBACK, &ha->flags); } break; -- cgit v1.2.3