From f198cafaa41a23274b88dbed7cd909fa5e91b1ee Mon Sep 17 00:00:00 2001 From: Himanshu Madhani Date: Wed, 27 Jan 2016 12:03:30 -0500 Subject: [PATCH] qla2xxx: Allow fw to hold status before sending ABTS response. Set bit 12 of additional firmware options 3 to let firmware hold status IOCB until ABTS response is received from Target. Signed-off-by: Himanshu Madhani Signed-off-by: Giridhar Malavali Reviewed-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/qla2xxx/qla_gbl.h | 1 + drivers/scsi/qla2xxx/qla_init.c | 11 ++++++++++- drivers/scsi/qla2xxx/qla_os.c | 7 +++++++ 3 files changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 0103e468e357..1bfdcdf39678 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -121,6 +121,7 @@ extern int ql2xmdcapmask; extern int ql2xmdenable; extern int ql2xexlogins; extern int ql2xexchoffld; +extern int ql2xfwholdabts; extern int qla2x00_loop_reset(scsi_qla_host_t *); extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int); diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index fa015d6ea049..7f6698a4cfe8 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -2062,6 +2062,10 @@ qla24xx_update_fw_options(scsi_qla_host_t *vha) if (IS_P3P_TYPE(ha)) return; + /* Hold status IOCBs until ABTS response received. */ + if (ql2xfwholdabts) + ha->fw_options[3] |= BIT_12; + /* Update Serial Link options. */ if ((le16_to_cpu(ha->fw_seriallink_options24[0]) & BIT_0) == 0) return; @@ -6410,12 +6414,17 @@ qla81xx_update_fw_options(scsi_qla_host_t *vha) { struct qla_hw_data *ha = vha->hw; + /* Hold status IOCBs until ABTS response received. */ + if (ql2xfwholdabts) + ha->fw_options[3] |= BIT_12; + if (!ql2xetsenable) - return; + goto out; /* Enable ETS Burst. */ memset(ha->fw_options, 0, sizeof(ha->fw_options)); ha->fw_options[2] |= BIT_9; +out: qla2x00_set_fw_options(vha, ha->fw_options); } diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index f6c7ce35b542..8bcf3f84f935 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -233,6 +233,13 @@ MODULE_PARM_DESC(ql2xexchoffld, "Number of exchanges to offload. " "0 (Default)- Disabled."); +int ql2xfwholdabts = 0; +module_param(ql2xfwholdabts, int, S_IRUGO); +MODULE_PARM_DESC(ql2xfwholdabts, + "Allow FW to hold status IOCB until ABTS rsp received. " + "0 (Default) Do not set fw option. " + "1 - Set fw option to hold ABTS."); + /* * SCSI host template entry points */ -- 2.30.2