[SCSI] bfa: Added Fabric Assigned Address(FAA) support

- Updated/added data structures and definitions to support FAA protocol.
- Modified the IOC state machine to support FAA.
- Introduced FAA feature configuration - enable/disable/query.

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

drivers/scsi/bfa/bfa.h

@@ -241,6 +241,31 @@ struct bfa_hwif_s {
 };
 typedef void (*bfa_cb_iocfc_t) (void *cbarg, enum bfa_status status);
 
+struct bfa_faa_cbfn_s {
+	bfa_cb_iocfc_t	faa_cbfn;
+	void		*faa_cbarg;
+};
+
+#define BFA_FAA_ENABLED		1
+#define BFA_FAA_DISABLED	2
+
+/*
+ *	FAA attributes
+ */
+struct bfa_faa_attr_s {
+	wwn_t	faa;
+	u8	faa_state;
+	u8	pwwn_source;
+	u8	rsvd[6];
+};
+
+struct bfa_faa_args_s {
+	struct bfa_faa_attr_s	*faa_attr;
+	struct bfa_faa_cbfn_s	faa_cb;
+	u8			faa_state;
+	bfa_boolean_t		busy;
+};
+
 struct bfa_iocfc_s {
 	struct bfa_s		*bfa;
 	struct bfa_iocfc_cfg_s	cfg;
@@ -266,6 +291,7 @@ struct bfa_iocfc_s {
 	bfa_cb_iocfc_t		updateq_cbfn; /*  bios callback function */
 	void			*updateq_cbarg;	/*  bios callback arg */
 	u32	intr_mask;
+	struct bfa_faa_args_s	faa_args;
 };
 
 #define bfa_lpuid(__bfa)						\

drivers/scsi/bfa/bfa_core.c

@@ -795,6 +795,181 @@ bfa_iocfc_reset_queues(struct bfa_s *bfa)
 	}
 }
 
+/* Fabric Assigned Address specific functions */
+
+/*
+ *	Check whether IOC is ready before sending command down
+ */
+static bfa_status_t
+bfa_faa_validate_request(struct bfa_s *bfa)
+{
+	enum bfa_ioc_type_e	ioc_type = bfa_get_type(bfa);
+	u32	card_type = bfa->ioc.attr->card_type;
+
+	if (bfa_ioc_is_operational(&bfa->ioc)) {
+		if ((ioc_type != BFA_IOC_TYPE_FC) || bfa_mfg_is_mezz(card_type))
+			return BFA_STATUS_FEATURE_NOT_SUPPORTED;
+	} else {
+		if (!bfa_ioc_is_acq_addr(&bfa->ioc))
+			return BFA_STATUS_IOC_NON_OP;
+	}
+
+	return BFA_STATUS_OK;
+}
+
+bfa_status_t
+bfa_faa_enable(struct bfa_s *bfa, bfa_cb_iocfc_t cbfn, void *cbarg)
+{
+	struct bfi_faa_en_dis_s faa_enable_req;
+	struct bfa_iocfc_s	*iocfc = &bfa->iocfc;
+	bfa_status_t		status;
+
+	iocfc->faa_args.faa_cb.faa_cbfn = cbfn;
+	iocfc->faa_args.faa_cb.faa_cbarg = cbarg;
+
+	status = bfa_faa_validate_request(bfa);
+	if (status != BFA_STATUS_OK)
+		return status;
+
+	if (iocfc->faa_args.busy == BFA_TRUE)
+		return BFA_STATUS_DEVBUSY;
+
+	if (iocfc->faa_args.faa_state == BFA_FAA_ENABLED)
+		return BFA_STATUS_FAA_ENABLED;
+
+	if (bfa_fcport_is_trunk_enabled(bfa))
+		return BFA_STATUS_ERROR_TRUNK_ENABLED;
+
+	bfa_fcport_cfg_faa(bfa, BFA_FAA_ENABLED);
+	iocfc->faa_args.busy = BFA_TRUE;
+
+	memset(&faa_enable_req, 0, sizeof(struct bfi_faa_en_dis_s));
+	bfi_h2i_set(faa_enable_req.mh, BFI_MC_IOCFC,
+		BFI_IOCFC_H2I_FAA_ENABLE_REQ, bfa_lpuid(bfa));
+
+	bfa_ioc_mbox_send(&bfa->ioc, &faa_enable_req,
+			sizeof(struct bfi_faa_en_dis_s));
+
+	return BFA_STATUS_OK;
+}
+
+bfa_status_t
+bfa_faa_disable(struct bfa_s *bfa, bfa_cb_iocfc_t cbfn,
+		void *cbarg)
+{
+	struct bfi_faa_en_dis_s faa_disable_req;
+	struct bfa_iocfc_s	*iocfc = &bfa->iocfc;
+	bfa_status_t		status;
+
+	iocfc->faa_args.faa_cb.faa_cbfn = cbfn;
+	iocfc->faa_args.faa_cb.faa_cbarg = cbarg;
+
+	status = bfa_faa_validate_request(bfa);
+	if (status != BFA_STATUS_OK)
+		return status;
+
+	if (iocfc->faa_args.busy == BFA_TRUE)
+		return BFA_STATUS_DEVBUSY;
+
+	if (iocfc->faa_args.faa_state == BFA_FAA_DISABLED)
+		return BFA_STATUS_FAA_DISABLED;
+
+	bfa_fcport_cfg_faa(bfa, BFA_FAA_DISABLED);
+	iocfc->faa_args.busy = BFA_TRUE;
+
+	memset(&faa_disable_req, 0, sizeof(struct bfi_faa_en_dis_s));
+	bfi_h2i_set(faa_disable_req.mh, BFI_MC_IOCFC,
+		BFI_IOCFC_H2I_FAA_DISABLE_REQ, bfa_lpuid(bfa));
+
+	bfa_ioc_mbox_send(&bfa->ioc, &faa_disable_req,
+		sizeof(struct bfi_faa_en_dis_s));
+
+	return BFA_STATUS_OK;
+}
+
+bfa_status_t
+bfa_faa_query(struct bfa_s *bfa, struct bfa_faa_attr_s *attr,
+		bfa_cb_iocfc_t cbfn, void *cbarg)
+{
+	struct bfi_faa_query_s  faa_attr_req;
+	struct bfa_iocfc_s      *iocfc = &bfa->iocfc;
+	bfa_status_t            status;
+
+	iocfc->faa_args.faa_attr = attr;
+	iocfc->faa_args.faa_cb.faa_cbfn = cbfn;
+	iocfc->faa_args.faa_cb.faa_cbarg = cbarg;
+
+	status = bfa_faa_validate_request(bfa);
+	if (status != BFA_STATUS_OK)
+		return status;
+
+	if (iocfc->faa_args.busy == BFA_TRUE)
+		return BFA_STATUS_DEVBUSY;
+
+	iocfc->faa_args.busy = BFA_TRUE;
+	memset(&faa_attr_req, 0, sizeof(struct bfi_faa_query_s));
+	bfi_h2i_set(faa_attr_req.mh, BFI_MC_IOCFC,
+		BFI_IOCFC_H2I_FAA_QUERY_REQ, bfa_lpuid(bfa));
+
+	bfa_ioc_mbox_send(&bfa->ioc, &faa_attr_req,
+		sizeof(struct bfi_faa_query_s));
+
+	return BFA_STATUS_OK;
+}
+
+/*
+ *	FAA enable response
+ */
+static void
+bfa_faa_enable_reply(struct bfa_iocfc_s *iocfc,
+		struct bfi_faa_en_dis_rsp_s *rsp)
+{
+	void	*cbarg = iocfc->faa_args.faa_cb.faa_cbarg;
+	bfa_status_t	status = rsp->status;
+
+	WARN_ON(!iocfc->faa_args.faa_cb.faa_cbfn);
+
+	iocfc->faa_args.faa_cb.faa_cbfn(cbarg, status);
+	iocfc->faa_args.busy = BFA_FALSE;
+}
+
+/*
+ *	FAA disable response
+ */
+static void
+bfa_faa_disable_reply(struct bfa_iocfc_s *iocfc,
+		struct bfi_faa_en_dis_rsp_s *rsp)
+{
+	void	*cbarg = iocfc->faa_args.faa_cb.faa_cbarg;
+	bfa_status_t	status = rsp->status;
+
+	WARN_ON(!iocfc->faa_args.faa_cb.faa_cbfn);
+
+	iocfc->faa_args.faa_cb.faa_cbfn(cbarg, status);
+	iocfc->faa_args.busy = BFA_FALSE;
+}
+
+/*
+ *	FAA query response
+ */
+static void
+bfa_faa_query_reply(struct bfa_iocfc_s *iocfc,
+		bfi_faa_query_rsp_t *rsp)
+{
+	void	*cbarg = iocfc->faa_args.faa_cb.faa_cbarg;
+
+	if (iocfc->faa_args.faa_attr) {
+		iocfc->faa_args.faa_attr->faa = rsp->faa;
+		iocfc->faa_args.faa_attr->faa_state = rsp->faa_status;
+		iocfc->faa_args.faa_attr->pwwn_source = rsp->addr_source;
+	}
+
+	WARN_ON(!iocfc->faa_args.faa_cb.faa_cbfn);
+
+	iocfc->faa_args.faa_cb.faa_cbfn(cbarg, BFA_STATUS_OK);
+	iocfc->faa_args.busy = BFA_FALSE;
+}
+
 /*
  * IOC enable request is complete
  */
@@ -803,6 +978,12 @@ bfa_iocfc_enable_cbfn(void *bfa_arg, enum bfa_status status)
 {
 	struct bfa_s	*bfa = bfa_arg;
 
+	if (status == BFA_STATUS_FAA_ACQ_ADDR) {
+		bfa_cb_queue(bfa, &bfa->iocfc.init_hcb_qe,
+				bfa_iocfc_init_cb, bfa);
+		return;
+	}
+
 	if (status != BFA_STATUS_OK) {
 		bfa_isr_disable(bfa);
 		if (bfa->iocfc.action == BFA_IOCFC_ACT_INIT)
@@ -968,6 +1149,17 @@ bfa_iocfc_isr(void *bfaarg, struct bfi_mbmsg_s *m)
 	case BFI_IOCFC_I2H_UPDATEQ_RSP:
 		iocfc->updateq_cbfn(iocfc->updateq_cbarg, BFA_STATUS_OK);
 		break;
+	case BFI_IOCFC_I2H_FAA_ENABLE_RSP:
+		bfa_faa_enable_reply(iocfc,
+			(struct bfi_faa_en_dis_rsp_s *)msg);
+		break;
+	case BFI_IOCFC_I2H_FAA_DISABLE_RSP:
+		bfa_faa_disable_reply(iocfc,
+			(struct bfi_faa_en_dis_rsp_s *)msg);
+		break;
+	case BFI_IOCFC_I2H_FAA_QUERY_RSP:
+		bfa_faa_query_reply(iocfc, (bfi_faa_query_rsp_t *)msg);
+		break;
 	default:
 		WARN_ON(1);
 	}

drivers/scsi/bfa/bfa_defs.h

@@ -145,6 +145,7 @@ enum bfa_status {
 	BFA_STATUS_IOC_FAILURE	= 56,	/* IOC failure - Retry, if persists
 					 * contact support */
 	BFA_STATUS_INVALID_WWN	= 57,	/*  Invalid WWN */
+	BFA_STATUS_IOC_NON_OP   = 61,	/* IOC is not operational */
 	BFA_STATUS_VERSION_FAIL = 70, /* Application/Driver version mismatch */
 	BFA_STATUS_DIAG_BUSY	= 71,	/*  diag busy */
 	BFA_STATUS_ENOFSAVE	= 78,	/*  No saved firmware trace */
@@ -157,6 +158,12 @@ enum bfa_status {
 	BFA_STATUS_TRUNK_DISABLED  = 165, /* Trunking is disabled on
 					   * the adapter */
 	BFA_STATUS_IOPROFILE_OFF = 175, /* IO profile OFF */
+	BFA_STATUS_FEATURE_NOT_SUPPORTED = 192,	/* Feature not supported */
+	BFA_STATUS_FAA_ENABLED = 197,	/* FAA is already enabled */
+	BFA_STATUS_FAA_DISABLED = 198,	/* FAA is already disabled */
+	BFA_STATUS_FAA_ACQUIRED = 199,	/* FAA is already acquired */
+	BFA_STATUS_FAA_ACQ_ADDR = 200,	/* Acquiring addr */
+	BFA_STATUS_ERROR_TRUNK_ENABLED = 203,	/* Trunk enabled on adapter */
 	BFA_STATUS_MAX_VAL		/* Unknown error code */
 };
 #define bfa_status_t enum bfa_status
@@ -275,6 +282,7 @@ enum bfa_ioc_state {
 	BFA_IOC_FWMISMATCH	= 11,	/*  IOC f/w different from drivers */
 	BFA_IOC_ENABLING	= 12,	/*  IOC is being enabled */
 	BFA_IOC_HWFAIL		= 13,	/*  PCI mapping doesn't exist */
+	BFA_IOC_ACQ_ADDR	= 14,	/*  Acquiring addr from fabric */
 };
 
 /*
@@ -455,10 +463,7 @@ enum bfa_port_speed {
 	BFA_PORT_SPEED_8GBPS	= 8,
 	BFA_PORT_SPEED_10GBPS	= 10,
 	BFA_PORT_SPEED_16GBPS	= 16,
-	BFA_PORT_SPEED_AUTO =
-		(BFA_PORT_SPEED_1GBPS | BFA_PORT_SPEED_2GBPS |
-		 BFA_PORT_SPEED_4GBPS | BFA_PORT_SPEED_8GBPS |
-		 BFA_PORT_SPEED_16GBPS),
+	BFA_PORT_SPEED_AUTO	= 0xf,
 };
 #define bfa_port_speed_t enum bfa_port_speed
 

drivers/scsi/bfa/bfa_defs_svc.h

@@ -635,6 +635,7 @@ enum bfa_port_states {
 	BFA_PORT_ST_FWMISMATCH		= 12,
 	BFA_PORT_ST_PREBOOT_DISABLED	= 13,
 	BFA_PORT_ST_TOGGLING_QWAIT	= 14,
+	BFA_PORT_ST_ACQ_ADDR		= 15,
 	BFA_PORT_ST_MAX_STATE,
 };
 
@@ -748,7 +749,8 @@ struct bfa_port_cfg_s {
 	u8	 ratelimit;	/*  ratelimit enabled or not	*/
 	u8	 trl_def_speed;	/*  ratelimit default speed	*/
 	u8	bb_scn;
-	u8	rsvd[3];
+	u8	faa_state;	/*  FAA enabled/disabled        */
+	u8	rsvd[2];
 	u16 path_tov;	/*  device path timeout	*/
 	u16 q_depth;	/*  SCSI Queue depth		*/
 };