[SCSI] bfa: Add support for FC Arbitrated Loop topology.

- Add private loop topology support at 2G/4G/8G speeds with following
  limitations
  1. No support for multiple initiators in the loop
  2. No public loop support. If attached to a loop with an FL_Port,
     device continues to work as a private NL_Port in the loop
  3. No auto topology detection. User has to manually set the
     configured topology to loop if attaching to loop.
- When loop topology is configured, enabling FC port features
  QoS/Trunk/TRL are not allowed and vice versa.

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

1 files changed, 69 insertions, 18 deletions

diff --git a/drivers/scsi/bfa/bfa_defs_svc.h b/drivers/scsi/bfa/bfa_defs_svc.h
index 36756ce..20749f1 100644
--- a/drivers/scsi/bfa/bfa_defs_svc.h
+++ b/drivers/scsi/bfa/bfa_defs_svc.h
@@ -324,12 +324,46 @@ struct bfa_fw_fcoe_port_stats_s {
 	struct bfa_fw_fip_stats_s		fip_stats;
 };
 
+/**
+ * @brief LPSM statistics
+ */
+struct bfa_fw_lpsm_stats_s {
+	u32	cls_rx;		/* LPSM cls_rx			*/
+	u32	cls_tx;		/* LPSM cls_tx			*/
+	u32	arbf0_rx;	/* LPSM abrf0 rcvd		*/
+	u32	arbf0_tx;	/* LPSM abrf0 xmit		*/
+	u32	init_rx;	/* LPSM loop init start		*/
+	u32	unexp_hwst;	/* LPSM unknown hw state	*/
+	u32	unexp_frame;	/* LPSM unknown_frame		*/
+	u32	unexp_prim;	/* LPSM unexpected primitive	*/
+	u32	prev_alpa_unavail; /* LPSM prev alpa unavailable */
+	u32	alpa_unavail;	/* LPSM alpa not available	*/
+	u32	lip_rx;		/* LPSM lip rcvd		*/
+	u32	lip_f7f7_rx;	/* LPSM lip f7f7 rcvd		*/
+	u32	lip_f8_rx;	/* LPSM lip f8 rcvd		*/
+	u32	lip_f8f7_rx;	/* LPSM lip f8f7 rcvd		*/
+	u32	lip_other_rx;	/* LPSM lip other rcvd		*/
+	u32	lip_tx;		/* LPSM lip xmit		*/
+	u32	retry_tov;	/* LPSM retry TOV		*/
+	u32	lip_tov;	/* LPSM LIP wait TOV		*/
+	u32	idle_tov;	/* LPSM idle wait TOV		*/
+	u32	arbf0_tov;	/* LPSM arbfo wait TOV		*/
+	u32	stop_loop_tov;	/* LPSM stop loop wait TOV	*/
+	u32	lixa_tov;	/* LPSM lisa wait TOV		*/
+	u32	lixx_tov;	/* LPSM lilp/lirp wait TOV	*/
+	u32	cls_tov;	/* LPSM cls wait TOV		*/
+	u32	sler;		/* LPSM SLER recvd		*/
+	u32	failed;		/* LPSM failed			*/
+	u32	success;	/* LPSM online			*/
+};
+
 /*
  * IOC firmware FC uport stats
  */
 struct bfa_fw_fc_uport_stats_s {
 	struct bfa_fw_port_snsm_stats_s		snsm_stats;
 	struct bfa_fw_port_lksm_stats_s		lksm_stats;
+	struct bfa_fw_lpsm_stats_s		lpsm_stats;
 };
 
 /*
@@ -357,11 +391,6 @@ struct bfa_fw_fcxchg_stats_s {
 	u32	ua_state_inv;
 };
 
-struct bfa_fw_lpsm_stats_s {
-	u32	cls_rx;
-	u32	cls_tx;
-};
-
 /*
  *  Trunk statistics
  */
@@ -454,7 +483,6 @@ struct bfa_fw_stats_s {
 	struct bfa_fw_io_stats_s	io_stats;
 	struct bfa_fw_port_stats_s	port_stats;
 	struct bfa_fw_fcxchg_stats_s	fcxchg_stats;
-	struct bfa_fw_lpsm_stats_s	lpsm_stats;
 	struct bfa_fw_lps_stats_s	lps_stats;
 	struct bfa_fw_trunk_stats_s	trunk_stats;
 	struct bfa_fw_advsm_stats_s	advsm_stats;
@@ -498,9 +526,10 @@ enum bfa_qos_bw_alloc {
  * QoS attribute returned in QoS Query
  */
 struct bfa_qos_attr_s {
-	u8		state;		/*  QoS current state */
-	u8		rsvd[3];
-	u32  total_bb_cr;		/*  Total BB Credits */
+	u8	state;		/*  QoS current state */
+	u8	rsvd1[3];
+	u32	total_bb_cr;	/*  Total BB Credits */
+	u32	rsvd2[2];
 };
 
 /*
@@ -714,9 +743,11 @@ enum bfa_port_type {
  */
 enum bfa_port_topology {
 	BFA_PORT_TOPOLOGY_NONE = 0,	/*  No valid topology */
-	BFA_PORT_TOPOLOGY_P2P  = 1,	/*  P2P only */
-	BFA_PORT_TOPOLOGY_LOOP = 2,	/*  LOOP topology */
-	BFA_PORT_TOPOLOGY_AUTO = 3,	/*  auto topology selection */
+	BFA_PORT_TOPOLOGY_P2P_OLD_VER = 1, /* P2P def for older ver */
+	BFA_PORT_TOPOLOGY_LOOP = 2,	/* LOOP topology */
+	BFA_PORT_TOPOLOGY_AUTO_OLD_VER = 3, /* auto def for older ver */
+	BFA_PORT_TOPOLOGY_AUTO = 4,	/* auto topology selection */
+	BFA_PORT_TOPOLOGY_P2P = 5,	/* P2P only */
 };
 
 /*
@@ -851,9 +882,10 @@ struct bfa_port_cfg_s {
 	u8	 bb_scn;	/*  BB_SCN value from FLOGI Exchg */
 	u8	 bb_scn_state;	/*  Config state of BB_SCN */
 	u8	 faa_state;	/*  FAA enabled/disabled        */
-	u8	 rsvd[1];
+	u8	 rsvd1;
 	u16	 path_tov;	/*  device path timeout	*/
 	u16	 q_depth;	/*  SCSI Queue depth		*/
+	u32	 rsvd2;
 };
 #pragma pack()
 
@@ -971,6 +1003,13 @@ struct bfa_trunk_vc_attr_s {
 	u16 vc_credits[8];
 };
 
+struct bfa_fcport_loop_info_s {
+	u8	myalpa;		/* alpa claimed */
+	u8	alpabm_val;	/* alpa bitmap valid or not (1 or 0) */
+	u8	resvd[6];
+	struct fc_alpabm_s alpabm;	/* alpa bitmap */
+};
+
 /*
  *	Link state information
  */
@@ -981,13 +1020,18 @@ struct bfa_port_link_s {
 	u8	 speed;		/*  Link speed (1/2/4/8 G) */
 	u32	 linkstate_opt; /*  Linkstate optional data (debug) */
 	u8	 trunked;	/*  Trunked or not (1 or 0) */
-	u8	 resvd[3];
+	u8	 resvd[7];
 	struct bfa_qos_attr_s  qos_attr;   /* QoS Attributes */
 	union {
-		struct bfa_qos_vc_attr_s qos_vc_attr;  /*  VC info from ELP */
-		struct bfa_trunk_vc_attr_s trunk_vc_attr;
-		struct bfa_fcport_fcf_s fcf; /*  FCF information (for FCoE) */
-	} vc_fcf;
+		struct bfa_fcport_loop_info_s loop_info;
+		union {
+			struct bfa_qos_vc_attr_s qos_vc_attr;
+					/*  VC info from ELP */
+			struct bfa_trunk_vc_attr_s trunk_vc_attr;
+			struct bfa_fcport_fcf_s fcf;
+					/*  FCF information (for FCoE) */
+		} vc_fcf;
+	} attr;
 };
 #pragma pack()
 
@@ -1112,6 +1156,9 @@ struct bfa_port_fc_stats_s {
 	u64     tx_frames;      /*  Tx frames                   */
 	u64     tx_words;       /*  Tx words                    */
 	u64     tx_lip;         /*  Tx LIP                      */
+	u64	tx_lip_f7f7;	/*  Tx LIP_F7F7		*/
+	u64	tx_lip_f8f7;	/*  Tx LIP_F8F7		*/
+	u64	tx_arbf0;	/*  Tx ARB F0			*/
 	u64     tx_nos;         /*  Tx NOS                      */
 	u64     tx_ols;         /*  Tx OLS                      */
 	u64     tx_lr;          /*  Tx LR                       */
@@ -1119,6 +1166,9 @@ struct bfa_port_fc_stats_s {
 	u64     rx_frames;      /*  Rx frames                   */
 	u64     rx_words;       /*  Rx words                    */
 	u64     lip_count;      /*  Rx LIP                      */
+	u64	rx_lip_f7f7;	/*  Rx LIP_F7F7		*/
+	u64	rx_lip_f8f7;	/*  Rx LIP_F8F7		*/
+	u64	rx_arbf0;	/*  Rx ARB F0			*/
 	u64     nos_count;      /*  Rx NOS                      */
 	u64     ols_count;      /*  Rx OLS                      */
 	u64     lr_count;       /*  Rx LR                       */
@@ -1140,6 +1190,7 @@ struct bfa_port_fc_stats_s {
 	u64	bbsc_frames_lost; /* Credit Recovery-Frames Lost  */
 	u64	bbsc_credits_lost; /* Credit Recovery-Credits Lost */
 	u64	bbsc_link_resets; /* Credit Recovery-Link Resets   */
+	u64	loop_timeouts;	/*  Loop timeouts		*/
 };
 
 /*