[SCSI] bfa: Add dynamic diagnostic port support

D-Port is a new port type created with the intention of running link
level diagnostic tests like loopback, traffic test. In static D-port
mode, user configures the port to D-port mode and starts the test, but
in dynamic D-port, once the Brocade switch port is configured to
D-port, it will reject the regular FLOGI from HBA with reason that it is
in D-port mode. So based on the reason code HBA port will turn itself into
D-port and start diagnostic test.
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@brocade.com>
Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/bfa/bfa_defs.h

@@ -199,15 +199,34 @@ enum bfa_status {
 	BFA_STATUS_DPORT_DISABLED = 236, /* D-port mode is already disabled */
 	BFA_STATUS_CMD_NOTSUPP_MEZZ = 239, /* Cmd not supported for MEZZ card */
 	BFA_STATUS_FRU_NOT_PRESENT = 240, /* fru module not present */
+	BFA_STATUS_DPORT_NO_SFP = 243, /* SFP is not present.\n D-port will be
+					* enabled but it will be operational
+					* only after inserting a valid SFP. */
 	BFA_STATUS_DPORT_ERR = 245,	/* D-port mode is enabled */
+	BFA_STATUS_DPORT_ENOSYS = 254, /* Switch has no D_Port functionality */
+	BFA_STATUS_DPORT_CANT_PERF = 255, /* Switch port is not D_Port capable
+					* or D_Port is disabled */
+	BFA_STATUS_DPORT_LOGICALERR = 256, /* Switch D_Port fail */
+	BFA_STATUS_DPORT_SWBUSY = 257, /* Switch port busy */
 	BFA_STATUS_ERR_BBCR_SPEED_UNSUPPORT = 258, /*!< BB credit recovery is
 					* supported at max port speed alone */
 	BFA_STATUS_ERROR_BBCR_ENABLED  = 259, /*!< BB credit recovery
 					* is enabled */
 	BFA_STATUS_INVALID_BBSCN = 260, /*!< Invalid BBSCN value.
 					 * Valid range is [1-15] */
+	BFA_STATUS_DDPORT_ERR = 261, /* Dynamic D_Port mode is active.\n To
+					* exit dynamic mode, disable D_Port on
+					* the remote port */
+	BFA_STATUS_DPORT_SFPWRAP_ERR = 262, /* Clear e/o_wrap fail, check or
+						* replace SFP */
 	BFA_STATUS_BBCR_CFG_NO_CHANGE = 265, /*!< BBCR is operational.
 			* Disable BBCR and try this operation again. */
+	BFA_STATUS_DPORT_SW_NOTREADY = 268, /* Remote port is not ready to
+					* start dport test. Check remote
+					* port status. */
+	BFA_STATUS_DPORT_INV_SFP = 271, /* Invalid SFP for D-PORT mode. */
+	BFA_STATUS_DPORT_CMD_NOTSUPP    = 273, /* Dport is not supported by
+					* remote port */
 	BFA_STATUS_MAX_VAL		/* Unknown error code */
 };
 #define bfa_status_t enum bfa_status
@@ -526,17 +545,6 @@ struct bfa_ioc_aen_data_s {
 	mac_t	mac;
 };
 
-/*
- *	D-port states
- *
-*/
-enum bfa_dport_state {
-	BFA_DPORT_ST_DISABLED	= 0,	/* D-port is Disabled */
-	BFA_DPORT_ST_DISABLING	= 1,	/* D-port is Disabling */
-	BFA_DPORT_ST_ENABLING	= 2,	/* D-port is Enabling */
-	BFA_DPORT_ST_ENABLED	= 3,	/* D-port is Enabled */
-};
-
 /*
  * ---------------------- mfg definitions ------------
  */
@@ -1136,6 +1144,7 @@ struct bfa_flash_attr_s {
 #define LB_PATTERN_DEFAULT	0xB5B5B5B5
 #define QTEST_CNT_DEFAULT	10
 #define QTEST_PAT_DEFAULT	LB_PATTERN_DEFAULT
+#define DPORT_ENABLE_LOOPCNT_DEFAULT (1024 * 1024)
 
 struct bfa_diag_memtest_s {
 	u8	algo;
@@ -1164,6 +1173,54 @@ struct bfa_diag_loopback_result_s {
 	u8	rsvd[3];
 };
 
+enum bfa_diag_dport_test_status {
+	DPORT_TEST_ST_IDLE	= 0,    /* the test has not started yet. */
+	DPORT_TEST_ST_FINAL	= 1,    /* the test done successfully */
+	DPORT_TEST_ST_SKIP	= 2,    /* the test skipped */
+	DPORT_TEST_ST_FAIL	= 3,    /* the test failed */
+	DPORT_TEST_ST_INPRG	= 4,    /* the testing is in progress */
+	DPORT_TEST_ST_RESPONDER	= 5,    /* test triggered from remote port */
+	DPORT_TEST_ST_STOPPED	= 6,    /* the test stopped by user. */
+	DPORT_TEST_ST_MAX
+};
+
+enum bfa_diag_dport_test_type {
+	DPORT_TEST_ELOOP	= 0,
+	DPORT_TEST_OLOOP	= 1,
+	DPORT_TEST_ROLOOP	= 2,
+	DPORT_TEST_LINK		= 3,
+	DPORT_TEST_MAX
+};
+
+enum bfa_diag_dport_test_opmode {
+	BFA_DPORT_OPMODE_AUTO	= 0,
+	BFA_DPORT_OPMODE_MANU	= 1,
+};
+
+struct bfa_diag_dport_subtest_result_s {
+	u8	status;		/* bfa_diag_dport_test_status */
+	u8	rsvd[7];	/* 64bit align */
+	u64	start_time;	/* timestamp  */
+};
+
+struct bfa_diag_dport_result_s {
+	wwn_t	rp_pwwn;	/* switch port wwn  */
+	wwn_t	rp_nwwn;	/* switch node wwn  */
+	u64	start_time;	/* user/sw start time */
+	u64	end_time;	/* timestamp  */
+	u8	status;		/* bfa_diag_dport_test_status */
+	u8	mode;		/* bfa_diag_dport_test_opmode */
+	u8	rsvd;		/* 64bit align */
+	u8	speed;		/* link speed for buf_reqd */
+	u16	buffer_required;
+	u16	frmsz;		/* frame size for buf_reqd */
+	u32	lpcnt;		/* Frame count */
+	u32	pat;		/* Pattern */
+	u32	roundtrip_latency;	/* in nano sec */
+	u32	est_cable_distance;	/* in meter */
+	struct bfa_diag_dport_subtest_result_s subtest[DPORT_TEST_MAX];
+};
+
 struct bfa_diag_ledtest_s {
 	u32	cmd;    /* bfa_led_op_t */
 	u32	color;  /* bfa_led_color_t */

drivers/scsi/bfa/bfa_defs_svc.h

@@ -761,6 +761,7 @@ enum bfa_port_states {
 	BFA_PORT_ST_TOGGLING_QWAIT	= 14,
 	BFA_PORT_ST_FAA_MISCONFIG	= 15,
 	BFA_PORT_ST_DPORT		= 16,
+	BFA_PORT_ST_DDPORT		= 17,
 	BFA_PORT_ST_MAX_STATE,
 };
 

drivers/scsi/bfa/bfa_svc.h

@@ -551,6 +551,7 @@ void bfa_fcport_event_register(struct bfa_s *bfa,
 			enum bfa_port_linkstate event), void *event_cbarg);
 bfa_boolean_t bfa_fcport_is_disabled(struct bfa_s *bfa);
 bfa_boolean_t bfa_fcport_is_dport(struct bfa_s *bfa);
+bfa_boolean_t bfa_fcport_is_ddport(struct bfa_s *bfa);
 bfa_status_t bfa_fcport_set_qos_bw(struct bfa_s *bfa,
 				   struct bfa_qos_bw_s *qos_bw);
 enum bfa_port_speed bfa_fcport_get_ratelim_speed(struct bfa_s *bfa);
@@ -715,10 +716,18 @@ struct bfa_fcdiag_lb_s {
 struct bfa_dport_s {
 	struct bfa_s	*bfa;		/* Back pointer to BFA	*/
 	bfa_sm_t	sm;		/* finite state machine */
-	u32		msgtag;		/* firmware msg tag for reply */
 	struct bfa_reqq_wait_s reqq_wait;
 	bfa_cb_diag_t	cbfn;
 	void		*cbarg;
+	union bfi_diag_dport_msg_u i2hmsg;
+	u8		test_state;	/* enum dport_test_state  */
+	u8		dynamic;	/* boolean_t  */
+	u8		rsvd[2];
+	u32		lpcnt;
+	u32		payload;	/* user defined payload pattern */
+	wwn_t		rp_pwwn;
+	wwn_t		rp_nwwn;
+	struct bfa_diag_dport_result_s result;
 };
 
 struct bfa_fcdiag_s {
@@ -742,11 +751,13 @@ bfa_status_t	bfa_fcdiag_queuetest(struct bfa_s *bfa, u32 ignore,
 			u32 queue, struct bfa_diag_qtest_result_s *result,
 			bfa_cb_diag_t cbfn, void *cbarg);
 bfa_status_t	bfa_fcdiag_lb_is_running(struct bfa_s *bfa);
-bfa_status_t	bfa_dport_enable(struct bfa_s *bfa, bfa_cb_diag_t cbfn,
-				 void *cbarg);
+bfa_status_t	bfa_dport_enable(struct bfa_s *bfa, u32 lpcnt, u32 pat,
+					bfa_cb_diag_t cbfn, void *cbarg);
 bfa_status_t	bfa_dport_disable(struct bfa_s *bfa, bfa_cb_diag_t cbfn,
 				  void *cbarg);
-bfa_status_t	bfa_dport_get_state(struct bfa_s *bfa,
-				    enum bfa_dport_state *state);
+bfa_status_t	bfa_dport_start(struct bfa_s *bfa, u32 lpcnt, u32 pat,
+				bfa_cb_diag_t cbfn, void *cbarg);
+bfa_status_t	bfa_dport_show(struct bfa_s *bfa,
+				struct bfa_diag_dport_result_s *result);
 
 #endif /* __BFA_SVC_H__ */

drivers/scsi/bfa/bfad_bsg.c

@@ -1785,51 +1785,87 @@ bfad_iocmd_diag_lb_stat(struct bfad_s *bfad, void *cmd)
 }
 
 int
-bfad_iocmd_diag_cfg_dport(struct bfad_s *bfad, unsigned int cmd, void *pcmd)
+bfad_iocmd_diag_dport_enable(struct bfad_s *bfad, void *pcmd)
 {
-	struct bfa_bsg_gen_s *iocmd = (struct bfa_bsg_gen_s *)pcmd;
+	struct bfa_bsg_dport_enable_s *iocmd =
+				(struct bfa_bsg_dport_enable_s *)pcmd;
 	unsigned long	flags;
 	struct bfad_hal_comp fcomp;
 
 	init_completion(&fcomp.comp);
 	spin_lock_irqsave(&bfad->bfad_lock, flags);
-	if (cmd == IOCMD_DIAG_DPORT_ENABLE)
-		iocmd->status = bfa_dport_enable(&bfad->bfa,
-					bfad_hcb_comp, &fcomp);
-	else if (cmd == IOCMD_DIAG_DPORT_DISABLE)
-		iocmd->status = bfa_dport_disable(&bfad->bfa,
-					bfad_hcb_comp, &fcomp);
+	iocmd->status = bfa_dport_enable(&bfad->bfa, iocmd->lpcnt,
+					iocmd->pat, bfad_hcb_comp, &fcomp);
+	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+	if (iocmd->status != BFA_STATUS_OK)
+		bfa_trc(bfad, iocmd->status);
 	else {
-		bfa_trc(bfad, 0);
-		spin_unlock_irqrestore(&bfad->bfad_lock, flags);
-		return -EINVAL;
+		wait_for_completion(&fcomp.comp);
+		iocmd->status = fcomp.status;
 	}
-	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+	return 0;
+}
 
+int
+bfad_iocmd_diag_dport_disable(struct bfad_s *bfad, void *pcmd)
+{
+	struct bfa_bsg_gen_s *iocmd = (struct bfa_bsg_gen_s *)pcmd;
+	unsigned long	flags;
+	struct bfad_hal_comp fcomp;
+
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_dport_disable(&bfad->bfa, bfad_hcb_comp, &fcomp);
+	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 	if (iocmd->status != BFA_STATUS_OK)
 		bfa_trc(bfad, iocmd->status);
 	else {
 		wait_for_completion(&fcomp.comp);
 		iocmd->status = fcomp.status;
 	}
+	return 0;
+}
+
+int
+bfad_iocmd_diag_dport_start(struct bfad_s *bfad, void *pcmd)
+{
+	struct bfa_bsg_dport_enable_s *iocmd =
+				(struct bfa_bsg_dport_enable_s *)pcmd;
+	unsigned long   flags;
+	struct bfad_hal_comp fcomp;
+
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_dport_start(&bfad->bfa, iocmd->lpcnt,
+					iocmd->pat, bfad_hcb_comp,
+					&fcomp);
+	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+	if (iocmd->status != BFA_STATUS_OK) {
+		bfa_trc(bfad, iocmd->status);
+	} else {
+		wait_for_completion(&fcomp.comp);
+		iocmd->status = fcomp.status;
+	}
 
 	return 0;
 }
 
 int
-bfad_iocmd_diag_dport_get_state(struct bfad_s *bfad, void *pcmd)
+bfad_iocmd_diag_dport_show(struct bfad_s *bfad, void *pcmd)
 {
-	struct bfa_bsg_diag_dport_get_state_s *iocmd =
-			(struct bfa_bsg_diag_dport_get_state_s *)pcmd;
-	unsigned long	flags;
+	struct bfa_bsg_diag_dport_show_s *iocmd =
+				(struct bfa_bsg_diag_dport_show_s *)pcmd;
+	unsigned long   flags;
 
 	spin_lock_irqsave(&bfad->bfad_lock, flags);
-	iocmd->status = bfa_dport_get_state(&bfad->bfa, &iocmd->state);
+	iocmd->status = bfa_dport_show(&bfad->bfa, &iocmd->result);
 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 
 	return 0;
 }
 
+
 int
 bfad_iocmd_phy_get_attr(struct bfad_s *bfad, void *cmd)
 {
@@ -2934,11 +2970,16 @@ bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
 		rc = bfad_iocmd_diag_lb_stat(bfad, iocmd);
 		break;
 	case IOCMD_DIAG_DPORT_ENABLE:
+		rc = bfad_iocmd_diag_dport_enable(bfad, iocmd);
+		break;
 	case IOCMD_DIAG_DPORT_DISABLE:
-		rc = bfad_iocmd_diag_cfg_dport(bfad, cmd, iocmd);
+		rc = bfad_iocmd_diag_dport_disable(bfad, iocmd);
+		break;
+	case IOCMD_DIAG_DPORT_SHOW:
+		rc = bfad_iocmd_diag_dport_show(bfad, iocmd);
 		break;
-	case IOCMD_DIAG_DPORT_GET_STATE:
-		rc = bfad_iocmd_diag_dport_get_state(bfad, iocmd);
+	case IOCMD_DIAG_DPORT_START:
+		rc = bfad_iocmd_diag_dport_start(bfad, iocmd);
 		break;
 	case IOCMD_PHY_GET_ATTR:
 		rc = bfad_iocmd_phy_get_attr(bfad, iocmd);

drivers/scsi/bfa/bfad_bsg.h

@@ -144,7 +144,6 @@ enum {
 	IOCMD_FCPIM_LUNMASK_DELETE,
 	IOCMD_DIAG_DPORT_ENABLE,
 	IOCMD_DIAG_DPORT_DISABLE,
-	IOCMD_DIAG_DPORT_GET_STATE,
 	IOCMD_QOS_SET_BW,
 	IOCMD_FCPIM_THROTTLE_QUERY,
 	IOCMD_FCPIM_THROTTLE_SET,
@@ -153,6 +152,8 @@ enum {
 	IOCMD_FRUVPD_READ,
 	IOCMD_FRUVPD_UPDATE,
 	IOCMD_FRUVPD_GET_MAX_SIZE,
+	IOCMD_DIAG_DPORT_SHOW,
+	IOCMD_DIAG_DPORT_START,
 };
 
 struct bfa_bsg_gen_s {
@@ -593,6 +594,21 @@ struct bfa_bsg_diag_loopback_s {
 	struct bfa_diag_loopback_result_s result;
 };
 
+struct bfa_bsg_diag_dport_show_s {
+	bfa_status_t	status;
+	u16		bfad_num;
+	u16		rsvd;
+	struct bfa_diag_dport_result_s result;
+};
+
+struct bfa_bsg_dport_enable_s {
+	bfa_status_t	status;
+	u16		bfad_num;
+	u16		rsvd;
+	u16		lpcnt;
+	u16		pat;
+};
+
 struct bfa_bsg_diag_fwping_s {
 	bfa_status_t	status;
 	u16		bfad_num;
@@ -640,13 +656,6 @@ struct bfa_bsg_diag_lb_stat_s {
 	u16		rsvd;
 };
 
-struct bfa_bsg_diag_dport_get_state_s {
-	bfa_status_t	status;
-	u16		bfad_num;
-	u16		rsvd;
-	enum bfa_dport_state state;
-};
-
 struct bfa_bsg_phy_attr_s {
 	bfa_status_t	status;
 	u16	bfad_num;

drivers/scsi/bfa/bfi.h

@@ -973,6 +973,7 @@ enum bfi_diag_i2h {
 	BFI_DIAG_I2H_LEDTEST = BFA_I2HM(BFI_DIAG_H2I_LEDTEST),
 	BFI_DIAG_I2H_QTEST      = BFA_I2HM(BFI_DIAG_H2I_QTEST),
 	BFI_DIAG_I2H_DPORT	= BFA_I2HM(BFI_DIAG_H2I_DPORT),
+	BFI_DIAG_I2H_DPORT_SCN	= BFA_I2HM(8),
 };
 
 #define BFI_DIAG_MAX_SGES	2
@@ -1064,16 +1065,73 @@ struct bfi_diag_qtest_req_s {
 enum bfi_dport_req {
 	BFI_DPORT_DISABLE	= 0,	/* disable dport request	*/
 	BFI_DPORT_ENABLE	= 1,	/* enable dport request		*/
+	BFI_DPORT_START		= 2,	/* start dport request	*/
+	BFI_DPORT_SHOW		= 3,	/* show dport request	*/
+	BFI_DPORT_DYN_DISABLE	= 4,	/* disable dynamic dport request */
+};
+
+enum bfi_dport_scn {
+	BFI_DPORT_SCN_TESTSTART		= 1,
+	BFI_DPORT_SCN_TESTCOMP		= 2,
+	BFI_DPORT_SCN_SFP_REMOVED	= 3,
+	BFI_DPORT_SCN_DDPORT_ENABLE	= 4,
+	BFI_DPORT_SCN_DDPORT_DISABLE	= 5,
+	BFI_DPORT_SCN_FCPORT_DISABLE	= 6,
+	BFI_DPORT_SCN_SUBTESTSTART	= 7,
+	BFI_DPORT_SCN_TESTSKIP		= 8,
+	BFI_DPORT_SCN_DDPORT_DISABLED	= 9,
 };
 
 struct bfi_diag_dport_req_s {
 	struct bfi_mhdr_s	mh;	/* 4 bytes                      */
-	u8			req;    /* request 1: enable 0: disable */
-	u8			status; /* reply status			*/
-	u8			rsvd[2];
-	u32			msgtag; /* msgtag for reply		*/
+	u8			req;	/* request 1: enable 0: disable	*/
+	u8			rsvd[3];
+	u32			lpcnt;
+	u32			payload;
+};
+
+struct bfi_diag_dport_rsp_s {
+	struct bfi_mhdr_s	mh;	/* header 4 bytes		*/
+	bfa_status_t		status;	/* reply status			*/
+	wwn_t			pwwn;	/* switch port wwn. 8 bytes	*/
+	wwn_t			nwwn;	/* switch node wwn. 8 bytes	*/
+};
+
+struct bfi_diag_dport_scn_teststart_s {
+	wwn_t	pwwn;	/* switch port wwn. 8 bytes */
+	wwn_t	nwwn;	/* switch node wwn. 8 bytes */
+	u8	type;	/* bfa_diag_dport_test_type_e */
+	u8	rsvd[3];
+	u32	numfrm; /* from switch uint in 1M */
+};
+
+struct bfi_diag_dport_scn_testcomp_s {
+	u8	status; /* bfa_diag_dport_test_status_e */
+	u8	speed;  /* bfa_port_speed_t  */
+	u16	numbuffer; /* from switch  */
+	u8	subtest_status[DPORT_TEST_MAX];  /* 4 bytes */
+	u32	latency;   /* from switch  */
+	u32	distance;  /* from swtich unit in meters  */
+			/* Buffers required to saturate the link */
+	u16	frm_sz;	/* from switch for buf_reqd */
+	u8	rsvd[2];
+};
+
+struct bfi_diag_dport_scn_s {		/* max size == RDS_RMESZ	*/
+	struct bfi_mhdr_s	mh;	/* header 4 bytes		*/
+	u8			state;  /* new state			*/
+	u8			rsvd[3];
+	union {
+		struct bfi_diag_dport_scn_teststart_s teststart;
+		struct bfi_diag_dport_scn_testcomp_s testcomp;
+	} info;
+};
+
+union bfi_diag_dport_msg_u {
+	struct bfi_diag_dport_req_s	req;
+	struct bfi_diag_dport_rsp_s	rsp;
+	struct bfi_diag_dport_scn_s	scn;
 };
-#define bfi_diag_dport_rsp_t struct bfi_diag_dport_req_s
 
 /*
  *	PHY module specific