[SCSI] bfa: Changes to support vport disable and enable operations.

Made changes to FCS lport, vport state machines to support vport
enable / disable operations.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/bfa/bfa_core.c

@@ -51,7 +51,7 @@ static bfa_isr_func_t  bfa_isrs[BFI_MC_MAX] = {
 	bfa_fcxp_isr,		/* BFI_MC_FCXP */
 	bfa_lps_isr,		/* BFI_MC_LPS */
 	bfa_rport_isr,		/* BFI_MC_RPORT */
-	bfa_itnim_isr,		/* BFI_MC_ITNIM */
+	bfa_itnim_isr,		/* BFI_MC_ITN */
 	bfa_isr_unhandled,	/* BFI_MC_IOIM_READ */
 	bfa_isr_unhandled,	/* BFI_MC_IOIM_WRITE */
 	bfa_isr_unhandled,	/* BFI_MC_IOIM_IO */

drivers/scsi/bfa/bfa_defs_svc.h

@@ -47,8 +47,6 @@ struct bfa_iocfc_fwcfg_s {
 	u16        num_rports;	/*  number of remote ports	*/
 	u16        num_ioim_reqs;	/*  number of IO reqs		*/
 	u16        num_tskim_reqs;	/*  task management requests	*/
-	u16        num_iotm_reqs;	/*  number of TM IO reqs	*/
-	u16        num_tsktm_reqs;	/*  TM task management requests*/
 	u16        num_fcxp_reqs;	/*  unassisted FC exchanges	*/
 	u16        num_uf_bufs;	/*  unsolicited recv buffers	*/
 	u8		num_cqs;

drivers/scsi/bfa/bfa_fc.h

@@ -1048,15 +1048,6 @@ struct fc_vft_s {
 	u32        res_c:24;
 };
 
-/*
- * FCP
- */
-enum {
-	FCP_RJT		= 0x01000000,	/* SRR reject */
-	FCP_SRR_ACCEPT	= 0x02000000,	/* SRR accept */
-	FCP_SRR		= 0x14000000,	/* Sequence Retransmission Request */
-};
-
 /*
  * FCP_CMND definitions
  */

drivers/scsi/bfa/bfa_fcpim.c

@@ -1043,7 +1043,7 @@ bfa_itnim_iocdisable(struct bfa_itnim_s *itnim)
 static bfa_boolean_t
 bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim)
 {
-	struct bfi_itnim_create_req_s *m;
+	struct bfi_itn_create_req_s *m;
 
 	itnim->msg_no++;
 
@@ -1056,7 +1056,7 @@ bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim)
 		return BFA_FALSE;
 	}
 
-	bfi_h2i_set(m->mh, BFI_MC_ITNIM, BFI_ITNIM_H2I_CREATE_REQ,
+	bfi_h2i_set(m->mh, BFI_MC_ITN, BFI_ITN_H2I_CREATE_REQ,
 			bfa_lpuid(itnim->bfa));
 	m->fw_handle = itnim->rport->fw_handle;
 	m->class = FC_CLASS_3;
@@ -1074,7 +1074,7 @@ bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim)
 static bfa_boolean_t
 bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim)
 {
-	struct bfi_itnim_delete_req_s *m;
+	struct bfi_itn_delete_req_s *m;
 
 	/*
 	 * check for room in queue to send request now
@@ -1085,7 +1085,7 @@ bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim)
 		return BFA_FALSE;
 	}
 
-	bfi_h2i_set(m->mh, BFI_MC_ITNIM, BFI_ITNIM_H2I_DELETE_REQ,
+	bfi_h2i_set(m->mh, BFI_MC_ITN, BFI_ITN_H2I_DELETE_REQ,
 			bfa_lpuid(itnim->bfa));
 	m->fw_handle = itnim->rport->fw_handle;
 	bfa_stats(itnim, fw_delete);
@@ -1251,7 +1251,7 @@ void
 bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 {
 	struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
-	union bfi_itnim_i2h_msg_u msg;
+	union bfi_itn_i2h_msg_u msg;
 	struct bfa_itnim_s *itnim;
 
 	bfa_trc(bfa, m->mhdr.msg_id);
@@ -1259,7 +1259,7 @@ bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 	msg.msg = m;
 
 	switch (m->mhdr.msg_id) {
-	case BFI_ITNIM_I2H_CREATE_RSP:
+	case BFI_ITN_I2H_CREATE_RSP:
 		itnim = BFA_ITNIM_FROM_TAG(fcpim,
 						msg.create_rsp->bfa_handle);
 		WARN_ON(msg.create_rsp->status != BFA_STATUS_OK);
@@ -1267,7 +1267,7 @@ bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 		bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
 		break;
 
-	case BFI_ITNIM_I2H_DELETE_RSP:
+	case BFI_ITN_I2H_DELETE_RSP:
 		itnim = BFA_ITNIM_FROM_TAG(fcpim,
 						msg.delete_rsp->bfa_handle);
 		WARN_ON(msg.delete_rsp->status != BFA_STATUS_OK);
@@ -1275,7 +1275,7 @@ bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 		bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
 		break;
 
-	case BFI_ITNIM_I2H_SLER_EVENT:
+	case BFI_ITN_I2H_SLER_EVENT:
 		itnim = BFA_ITNIM_FROM_TAG(fcpim,
 						msg.sler_event->bfa_handle);
 		bfa_stats(itnim, sler_events);

drivers/scsi/bfa/bfa_fcs.c

@@ -269,8 +269,8 @@ bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
 		break;
 
 	case BFA_FCS_FABRIC_SM_DELETE:
-		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
-		bfa_wc_down(&fabric->fcs->wc);
+		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
+		bfa_fcs_fabric_delete(fabric);
 		break;
 
 	default:

drivers/scsi/bfa/bfa_fcs.h

@@ -379,6 +379,7 @@ void bfa_fcs_vport_online(struct bfa_fcs_vport_s *vport);
 void bfa_fcs_vport_offline(struct bfa_fcs_vport_s *vport);
 void bfa_fcs_vport_delete_comp(struct bfa_fcs_vport_s *vport);
 void bfa_fcs_vport_fcs_delete(struct bfa_fcs_vport_s *vport);
+void bfa_fcs_vport_stop_comp(struct bfa_fcs_vport_s *vport);
 
 #define BFA_FCS_RPORT_DEF_DEL_TIMEOUT	90	/* in secs */
 #define BFA_FCS_RPORT_MAX_RETRIES	(5)

drivers/scsi/bfa/bfa_fcs_lport.c

@@ -74,6 +74,7 @@ enum bfa_fcs_lport_event {
 	BFA_FCS_PORT_SM_OFFLINE = 3,
 	BFA_FCS_PORT_SM_DELETE = 4,
 	BFA_FCS_PORT_SM_DELRPORT = 5,
+	BFA_FCS_PORT_SM_STOP = 6,
 };
 
 static void     bfa_fcs_lport_sm_uninit(struct bfa_fcs_lport_s *port,
@@ -86,6 +87,8 @@ static void     bfa_fcs_lport_sm_offline(struct bfa_fcs_lport_s *port,
 					enum bfa_fcs_lport_event event);
 static void     bfa_fcs_lport_sm_deleting(struct bfa_fcs_lport_s *port,
 					enum bfa_fcs_lport_event event);
+static void	bfa_fcs_lport_sm_stopping(struct bfa_fcs_lport_s *port,
+					enum bfa_fcs_lport_event event);
 
 static void
 bfa_fcs_lport_sm_uninit(
@@ -123,6 +126,12 @@ bfa_fcs_lport_sm_init(struct bfa_fcs_lport_s *port,
 		bfa_fcs_lport_deleted(port);
 		break;
 
+	case BFA_FCS_PORT_SM_STOP:
+		/* If vport - send completion call back */
+		if (port->vport)
+			bfa_fcs_vport_stop_comp(port->vport);
+		break;
+
 	case BFA_FCS_PORT_SM_OFFLINE:
 		break;
 
@@ -148,6 +157,23 @@ bfa_fcs_lport_sm_online(
 		bfa_fcs_lport_offline_actions(port);
 		break;
 
+	case BFA_FCS_PORT_SM_STOP:
+		__port_action[port->fabric->fab_type].offline(port);
+
+		if (port->num_rports == 0) {
+			bfa_sm_set_state(port, bfa_fcs_lport_sm_init);
+			/* If vport - send completion call back */
+			if (port->vport)
+				bfa_fcs_vport_stop_comp(port->vport);
+		} else {
+			bfa_sm_set_state(port, bfa_fcs_lport_sm_stopping);
+			list_for_each_safe(qe, qen, &port->rport_q) {
+				rport = (struct bfa_fcs_rport_s *) qe;
+				bfa_sm_send_event(rport, RPSM_EVENT_DELETE);
+			}
+		}
+		break;
+
 	case BFA_FCS_PORT_SM_DELETE:
 
 		__port_action[port->fabric->fab_type].offline(port);
@@ -189,6 +215,21 @@ bfa_fcs_lport_sm_offline(
 		bfa_fcs_lport_online_actions(port);
 		break;
 
+	case BFA_FCS_PORT_SM_STOP:
+		if (port->num_rports == 0) {
+			bfa_sm_set_state(port, bfa_fcs_lport_sm_init);
+			/* If vport - send completion call back */
+			if (port->vport)
+				bfa_fcs_vport_stop_comp(port->vport);
+		} else {
+			bfa_sm_set_state(port, bfa_fcs_lport_sm_stopping);
+			list_for_each_safe(qe, qen, &port->rport_q) {
+				rport = (struct bfa_fcs_rport_s *) qe;
+				bfa_sm_send_event(rport, RPSM_EVENT_DELETE);
+			}
+		}
+		break;
+
 	case BFA_FCS_PORT_SM_DELETE:
 		if (port->num_rports == 0) {
 			bfa_sm_set_state(port, bfa_fcs_lport_sm_uninit);
@@ -211,6 +252,28 @@ bfa_fcs_lport_sm_offline(
 	}
 }
 
+static void
+bfa_fcs_lport_sm_stopping(struct bfa_fcs_lport_s *port,
+			  enum bfa_fcs_lport_event event)
+{
+	bfa_trc(port->fcs, port->port_cfg.pwwn);
+	bfa_trc(port->fcs, event);
+
+	switch (event) {
+	case BFA_FCS_PORT_SM_DELRPORT:
+		if (port->num_rports == 0) {
+			bfa_sm_set_state(port, bfa_fcs_lport_sm_init);
+			/* If vport - send completion call back */
+			if (port->vport)
+				bfa_fcs_vport_stop_comp(port->vport);
+		}
+		break;
+
+	default:
+		bfa_sm_fault(port->fcs, event);
+	}
+}
+
 static void
 bfa_fcs_lport_sm_deleting(
 	struct bfa_fcs_lport_s *port,
@@ -1672,7 +1735,7 @@ bfa_fcs_lport_fdmi_build_rhba_pyld(struct bfa_fcs_lport_fdmi_s *fdmi, u8 *pyld)
 	memcpy(attr->value, fcs_hba_attr->driver_version, templen);
 	templen = fc_roundup(templen, sizeof(u32));
 	curr_ptr += sizeof(attr->type) + sizeof(templen) + templen;
-	len += templen;;
+	len += templen;
 	count++;
 	attr->len = cpu_to_be16(templen + sizeof(attr->type) +
 			     sizeof(templen));
@@ -4918,6 +4981,7 @@ enum bfa_fcs_vport_event {
 	BFA_FCS_VPORT_SM_DELCOMP = 11,	/*  lport delete completion */
 	BFA_FCS_VPORT_SM_RSP_DUP_WWN = 12,	/*  Dup wnn error*/
 	BFA_FCS_VPORT_SM_RSP_FAILED = 13,	/*  non-retryable failure */
+	BFA_FCS_VPORT_SM_STOPCOMP = 14,	/* vport delete completion */
 };
 
 static void     bfa_fcs_vport_sm_uninit(struct bfa_fcs_vport_s *vport,
@@ -4940,6 +5004,10 @@ static void     bfa_fcs_vport_sm_logo(struct bfa_fcs_vport_s *vport,
 				      enum bfa_fcs_vport_event event);
 static void     bfa_fcs_vport_sm_error(struct bfa_fcs_vport_s *vport,
 				      enum bfa_fcs_vport_event event);
+static void	bfa_fcs_vport_sm_stopping(struct bfa_fcs_vport_s *vport,
+					enum bfa_fcs_vport_event event);
+static void	bfa_fcs_vport_sm_logo_for_stop(struct bfa_fcs_vport_s *vport,
+					enum bfa_fcs_vport_event event);
 
 static struct bfa_sm_table_s  vport_sm_table[] = {
 	{BFA_SM(bfa_fcs_vport_sm_uninit), BFA_FCS_VPORT_UNINIT},
@@ -5042,6 +5110,11 @@ bfa_fcs_vport_sm_offline(struct bfa_fcs_vport_s *vport,
 		bfa_fcs_vport_do_fdisc(vport);
 		break;
 
+	case BFA_FCS_VPORT_SM_STOP:
+		bfa_sm_set_state(vport, bfa_fcs_vport_sm_cleanup);
+		bfa_sm_send_event(&vport->lport, BFA_FCS_PORT_SM_STOP);
+		break;
+
 	case BFA_FCS_VPORT_SM_OFFLINE:
 		/*
 		 * This can happen if the vport couldn't be initialzied
@@ -5155,6 +5228,11 @@ bfa_fcs_vport_sm_online(struct bfa_fcs_vport_s *vport,
 		bfa_fcs_lport_delete(&vport->lport);
 		break;
 
+	case BFA_FCS_VPORT_SM_STOP:
+		bfa_sm_set_state(vport, bfa_fcs_vport_sm_stopping);
+		bfa_sm_send_event(&vport->lport, BFA_FCS_PORT_SM_STOP);
+		break;
+
 	case BFA_FCS_VPORT_SM_OFFLINE:
 		bfa_sm_set_state(vport, bfa_fcs_vport_sm_offline);
 		bfa_sm_send_event(vport->lps, BFA_LPS_SM_OFFLINE);
@@ -5166,6 +5244,32 @@ bfa_fcs_vport_sm_online(struct bfa_fcs_vport_s *vport,
 	}
 }
 
+/*
+ * Vport is being stopped - awaiting lport stop completion to send
+ * LOGO to fabric.
+ */
+static void
+bfa_fcs_vport_sm_stopping(struct bfa_fcs_vport_s *vport,
+			  enum bfa_fcs_vport_event event)
+{
+	bfa_trc(__vport_fcs(vport), __vport_pwwn(vport));
+	bfa_trc(__vport_fcs(vport), event);
+
+	switch (event) {
+	case BFA_FCS_VPORT_SM_STOPCOMP:
+		bfa_sm_set_state(vport, bfa_fcs_vport_sm_logo_for_stop);
+		bfa_fcs_vport_do_logo(vport);
+		break;
+
+	case BFA_FCS_VPORT_SM_OFFLINE:
+		bfa_sm_set_state(vport, bfa_fcs_vport_sm_cleanup);
+		break;
+
+	default:
+		bfa_sm_fault(__vport_fcs(vport), event);
+	}
+}
+
 /*
  * Vport is being deleted - awaiting lport delete completion to send
  * LOGO to fabric.
@@ -5236,6 +5340,10 @@ bfa_fcs_vport_sm_cleanup(struct bfa_fcs_vport_s *vport,
 		bfa_fcs_vport_free(vport);
 		break;
 
+	case BFA_FCS_VPORT_SM_STOPCOMP:
+		bfa_sm_set_state(vport, bfa_fcs_vport_sm_created);
+		break;
+
 	case BFA_FCS_VPORT_SM_DELETE:
 		break;
 
@@ -5244,6 +5352,34 @@ bfa_fcs_vport_sm_cleanup(struct bfa_fcs_vport_s *vport,
 	}
 }
 
+/*
+ * LOGO is sent to fabric. Vport stop is in progress. Lport stop cleanup
+ * is done.
+ */
+static void
+bfa_fcs_vport_sm_logo_for_stop(struct bfa_fcs_vport_s *vport,
+			       enum bfa_fcs_vport_event event)
+{
+	bfa_trc(__vport_fcs(vport), __vport_pwwn(vport));
+	bfa_trc(__vport_fcs(vport), event);
+
+	switch (event) {
+	case BFA_FCS_VPORT_SM_OFFLINE:
+		bfa_sm_send_event(vport->lps, BFA_LPS_SM_OFFLINE);
+		/*
+		 * !!! fall through !!!
+		 */
+
+	case BFA_FCS_VPORT_SM_RSP_OK:
+	case BFA_FCS_VPORT_SM_RSP_ERROR:
+		bfa_sm_set_state(vport, bfa_fcs_vport_sm_created);
+		break;
+
+	default:
+		bfa_sm_fault(__vport_fcs(vport), event);
+	}
+}
+
 /*
  * LOGO is sent to fabric. Vport delete is in progress. Lport delete cleanup
  * is done.
@@ -5421,6 +5557,15 @@ bfa_fcs_vport_fcs_delete(struct bfa_fcs_vport_s *vport)
 	bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_DELETE);
 }
 
+/*
+ * Stop completion callback from associated lport
+ */
+void
+bfa_fcs_vport_stop_comp(struct bfa_fcs_vport_s *vport)
+{
+	bfa_sm_send_event(vport, BFA_FCS_VPORT_SM_STOPCOMP);
+}
+
 /*
  * Delete completion callback from associated lport
  */

drivers/scsi/bfa/bfi.h

@@ -172,7 +172,7 @@ enum bfi_mclass {
 	BFI_MC_FCXP		= 9,	/*  FC Transport		    */
 	BFI_MC_LPS		= 10,	/*  lport fc login services	    */
 	BFI_MC_RPORT		= 11,	/*  Remote port		    */
-	BFI_MC_ITNIM		= 12,	/*  I-T nexus (Initiator mode)	    */
+	BFI_MC_ITN		= 12,	/*  I-T nexus (Initiator mode)	    */
 	BFI_MC_IOIM_READ	= 13,	/*  read IO (Initiator mode)	    */
 	BFI_MC_IOIM_WRITE	= 14,	/*  write IO (Initiator mode)	    */
 	BFI_MC_IOIM_IO		= 15,	/*  IO (Initiator mode)	    */

drivers/scsi/bfa/bfi_ms.h

@@ -373,7 +373,8 @@ struct bfi_lps_login_req_s {
 	wwn_t		nwwn;
 	u8		fdisc;
 	u8		auth_en;
-	u8		rsvd[2];
+	u8		lps_role;
+	u8		rsvd[1];
 };
 
 struct bfi_lps_login_rsp_s {
@@ -515,62 +516,63 @@ union bfi_rport_i2h_msg_u {
  * Initiator mode I-T nexus interface defines.
  */
 
-enum bfi_itnim_h2i {
-	BFI_ITNIM_H2I_CREATE_REQ = 1,	/*  i-t nexus creation */
-	BFI_ITNIM_H2I_DELETE_REQ = 2,	/*  i-t nexus deletion */
+enum bfi_itn_h2i {
+	BFI_ITN_H2I_CREATE_REQ = 1,	/*  i-t nexus creation */
+	BFI_ITN_H2I_DELETE_REQ = 2,	/*  i-t nexus deletion */
 };
 
-enum bfi_itnim_i2h {
-	BFI_ITNIM_I2H_CREATE_RSP = BFA_I2HM(1),
-	BFI_ITNIM_I2H_DELETE_RSP = BFA_I2HM(2),
-	BFI_ITNIM_I2H_SLER_EVENT = BFA_I2HM(3),
+enum bfi_itn_i2h {
+	BFI_ITN_I2H_CREATE_RSP = BFA_I2HM(1),
+	BFI_ITN_I2H_DELETE_RSP = BFA_I2HM(2),
+	BFI_ITN_I2H_SLER_EVENT = BFA_I2HM(3),
 };
 
-struct bfi_itnim_create_req_s {
+struct bfi_itn_create_req_s {
 	struct bfi_mhdr_s  mh;		/*  common msg header		 */
 	u16	fw_handle;	/*  f/w handle for itnim	 */
 	u8	class;		/*  FC class for IO		 */
 	u8	seq_rec;	/*  sequence recovery support	 */
 	u8	msg_no;		/*  seq id of the msg		 */
+	u8	role;
 };
 
-struct bfi_itnim_create_rsp_s {
+struct bfi_itn_create_rsp_s {
 	struct bfi_mhdr_s  mh;		/*  common msg header		 */
 	u16	bfa_handle;	/*  bfa handle for itnim	 */
 	u8	status;		/*  fcp request status		 */
 	u8	seq_id;		/*  seq id of the msg		 */
 };
 
-struct bfi_itnim_delete_req_s {
+struct bfi_itn_delete_req_s {
 	struct bfi_mhdr_s  mh;		/*  common msg header		 */
 	u16	fw_handle;	/*  f/w itnim handle		 */
 	u8	seq_id;		/*  seq id of the msg		 */
 	u8	rsvd;
 };
 
-struct bfi_itnim_delete_rsp_s {
+struct bfi_itn_delete_rsp_s {
 	struct bfi_mhdr_s  mh;		/*  common msg header		 */
 	u16	bfa_handle;	/*  bfa handle for itnim	 */
 	u8	status;		/*  fcp request status		 */
 	u8	seq_id;		/*  seq id of the msg		 */
 };
 
-struct bfi_itnim_sler_event_s {
+struct bfi_itn_sler_event_s {
 	struct bfi_mhdr_s  mh;		/*  common msg header		 */
 	u16	bfa_handle;	/*  bfa handle for itnim	 */
 	u16	rsvd;
 };
 
-union bfi_itnim_h2i_msg_u {
-	struct bfi_itnim_create_req_s *create_req;
-	struct bfi_itnim_delete_req_s *delete_req;
+union bfi_itn_h2i_msg_u {
+	struct bfi_itn_create_req_s *create_req;
+	struct bfi_itn_delete_req_s *delete_req;
 	struct bfi_msg_s	*msg;
 };
 
-union bfi_itnim_i2h_msg_u {
-	struct bfi_itnim_create_rsp_s *create_rsp;
-	struct bfi_itnim_delete_rsp_s *delete_rsp;
-	struct bfi_itnim_sler_event_s *sler_event;
+union bfi_itn_i2h_msg_u {
+	struct bfi_itn_create_rsp_s *create_rsp;
+	struct bfi_itn_delete_rsp_s *delete_rsp;
+	struct bfi_itn_sler_event_s *sler_event;
 	struct bfi_msg_s	*msg;
 };