[SCSI] bfa: Support for FC BB credit recovery
This patch includes changes to 1) Enable/disable fc credit recovery on
Brocade FC adapter port operating at max supported speed. 2) Get credit
recovery status and stats related to credit loss and recovered credits
Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfa_svc.c b/drivers/scsi/bfa/bfa_svc.c
index 7ed2c57..6ed6042 100644
--- a/drivers/scsi/bfa/bfa_svc.c
+++ b/drivers/scsi/bfa/bfa_svc.c
@@ -1614,7 +1614,6 @@
lps->lp_mac = rsp->lp_mac;
lps->brcd_switch = rsp->brcd_switch;
lps->fcf_mac = rsp->fcf_mac;
- lps->pr_bbscn = rsp->bb_scn;
break;
@@ -1744,7 +1743,6 @@
m->nwwn = lps->nwwn;
m->fdisc = lps->fdisc;
m->auth_en = lps->auth_en;
- m->bb_scn = lps->bb_scn;
bfa_reqq_produce(lps->bfa, lps->reqq, m->mh);
list_del(&lps->qe);
@@ -1940,7 +1938,7 @@
*/
void
bfa_lps_flogi(struct bfa_lps_s *lps, void *uarg, u8 alpa, u16 pdusz,
- wwn_t pwwn, wwn_t nwwn, bfa_boolean_t auth_en, uint8_t bb_scn)
+ wwn_t pwwn, wwn_t nwwn, bfa_boolean_t auth_en)
{
lps->uarg = uarg;
lps->alpa = alpa;
@@ -1949,7 +1947,6 @@
lps->nwwn = nwwn;
lps->fdisc = BFA_FALSE;
lps->auth_en = auth_en;
- lps->bb_scn = bb_scn;
bfa_sm_send_event(lps, BFA_LPS_SM_LOGIN);
}
@@ -3158,6 +3155,8 @@
fcport->qos_attr = pevent->link_state.qos_attr;
fcport->qos_vc_attr = pevent->link_state.attr.vc_fcf.qos_vc_attr;
+ if (fcport->cfg.bb_cr_enabled)
+ fcport->bbcr_attr = pevent->link_state.attr.bbcr_attr;
/*
* update trunk state if applicable
*/
@@ -3177,7 +3176,6 @@
{
fcport->speed = BFA_PORT_SPEED_UNKNOWN;
fcport->topology = BFA_PORT_TOPOLOGY_NONE;
- fcport->bbsc_op_state = BFA_FALSE;
}
/*
@@ -3629,6 +3627,11 @@
fcport->qos_attr.qos_bw_op =
i2hmsg.penable_rsp->port_cfg.qos_bw;
+ if (fcport->cfg.bb_cr_enabled)
+ fcport->bbcr_attr.state = BFA_BBCR_OFFLINE;
+ else
+ fcport->bbcr_attr.state = BFA_BBCR_DISABLED;
+
bfa_sm_send_event(fcport, BFA_FCPORT_SM_FWRSP);
}
break;
@@ -3639,6 +3642,11 @@
break;
case BFI_FCPORT_I2H_EVENT:
+ if (fcport->cfg.bb_cr_enabled)
+ fcport->bbcr_attr.state = BFA_BBCR_OFFLINE;
+ else
+ fcport->bbcr_attr.state = BFA_BBCR_DISABLED;
+
if (i2hmsg.event->link_state.linkstate == BFA_PORT_LINKUP)
bfa_sm_send_event(fcport, BFA_FCPORT_SM_LINKUP);
else {
@@ -3964,14 +3972,11 @@
}
void
-bfa_fcport_set_tx_bbcredit(struct bfa_s *bfa, u16 tx_bbcredit, u8 bb_scn)
+bfa_fcport_set_tx_bbcredit(struct bfa_s *bfa, u16 tx_bbcredit)
{
struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
fcport->cfg.tx_bbcredit = (u8)tx_bbcredit;
- fcport->cfg.bb_scn = bb_scn;
- if (bb_scn)
- fcport->bbsc_op_state = BFA_TRUE;
}
/*
@@ -4021,7 +4026,6 @@
attr->pport_cfg.path_tov = bfa_fcpim_path_tov_get(bfa);
attr->pport_cfg.q_depth = bfa_fcpim_qdepth_get(bfa);
attr->port_state = bfa_sm_to_state(hal_port_sm_table, fcport->sm);
- attr->bbsc_op_status = fcport->bbsc_op_state;
/* PBC Disabled State */
if (bfa_fcport_is_pbcdisabled(bfa))
@@ -4217,6 +4221,77 @@
return fcport->cfg.trunked;
}
+bfa_status_t
+bfa_fcport_cfg_bbcr(struct bfa_s *bfa, bfa_boolean_t on_off, u8 bb_scn)
+{
+ struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
+
+ bfa_trc(bfa, on_off);
+
+ if (bfa_ioc_get_type(&fcport->bfa->ioc) != BFA_IOC_TYPE_FC)
+ return BFA_STATUS_BBCR_FC_ONLY;
+
+ if (bfa_mfg_is_mezz(bfa->ioc.attr->card_type) &&
+ (bfa->ioc.attr->card_type != BFA_MFG_TYPE_CHINOOK))
+ return BFA_STATUS_CMD_NOTSUPP_MEZZ;
+
+ if (on_off) {
+ if (fcport->cfg.topology == BFA_PORT_TOPOLOGY_LOOP)
+ return BFA_STATUS_TOPOLOGY_LOOP;
+
+ if (fcport->cfg.qos_enabled)
+ return BFA_STATUS_ERROR_QOS_ENABLED;
+
+ if (fcport->cfg.trunked)
+ return BFA_STATUS_TRUNK_ENABLED;
+
+ if ((fcport->cfg.speed != BFA_PORT_SPEED_AUTO) &&
+ (fcport->cfg.speed < bfa_ioc_speed_sup(&bfa->ioc)))
+ return BFA_STATUS_ERR_BBCR_SPEED_UNSUPPORT;
+
+ if (bfa_ioc_speed_sup(&bfa->ioc) < BFA_PORT_SPEED_8GBPS)
+ return BFA_STATUS_FEATURE_NOT_SUPPORTED;
+
+ if (fcport->cfg.bb_cr_enabled) {
+ if (bb_scn != fcport->cfg.bb_scn)
+ return BFA_STATUS_BBCR_CFG_NO_CHANGE;
+ else
+ return BFA_STATUS_NO_CHANGE;
+ }
+
+ if ((bb_scn == 0) || (bb_scn > BFA_BB_SCN_MAX))
+ bb_scn = BFA_BB_SCN_DEF;
+
+ fcport->cfg.bb_cr_enabled = on_off;
+ fcport->cfg.bb_scn = bb_scn;
+ } else {
+ if (!fcport->cfg.bb_cr_enabled)
+ return BFA_STATUS_NO_CHANGE;
+
+ fcport->cfg.bb_cr_enabled = on_off;
+ fcport->cfg.bb_scn = 0;
+ }
+
+ return BFA_STATUS_OK;
+}
+
+bfa_status_t
+bfa_fcport_get_bbcr_attr(struct bfa_s *bfa,
+ struct bfa_bbcr_attr_s *bbcr_attr)
+{
+ struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
+
+ if (bfa_ioc_get_type(&fcport->bfa->ioc) != BFA_IOC_TYPE_FC)
+ return BFA_STATUS_BBCR_FC_ONLY;
+
+ if (fcport->cfg.topology == BFA_PORT_TOPOLOGY_LOOP)
+ return BFA_STATUS_TOPOLOGY_LOOP;
+
+ *bbcr_attr = fcport->bbcr_attr;
+
+ return BFA_STATUS_OK;
+}
+
void
bfa_fcport_dportenable(struct bfa_s *bfa)
{