[SCSI] bfa: Added support to query PHY.

- Added PHY sub-module.
- Implemented interface to obtain stats and to
  read/update the fw from the PHY module.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/bfa/bfa_core.c

@@ -154,6 +154,16 @@ bfa_com_diag_attach(struct bfa_s *bfa)
 	bfa_diag_memclaim(diag, diag_dma->kva_curp, diag_dma->dma_curp);
 }
 
+static void
+bfa_com_phy_attach(struct bfa_s *bfa, bfa_boolean_t mincfg)
+{
+	struct bfa_phy_s	*phy = BFA_PHY(bfa);
+	struct bfa_mem_dma_s	*phy_dma = BFA_MEM_PHY_DMA(bfa);
+
+	bfa_phy_attach(phy, &bfa->ioc, bfa, bfa->trcmod, mincfg);
+	bfa_phy_memclaim(phy, phy_dma->kva_curp, phy_dma->dma_curp, mincfg);
+}
+
 /*
  * BFA IOC FC related definitions
  */
@@ -1395,6 +1405,7 @@ bfa_cfg_get_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
 	struct bfa_mem_dma_s *sfp_dma = BFA_MEM_SFP_DMA(bfa);
 	struct bfa_mem_dma_s *flash_dma = BFA_MEM_FLASH_DMA(bfa);
 	struct bfa_mem_dma_s *diag_dma = BFA_MEM_DIAG_DMA(bfa);
+	struct bfa_mem_dma_s *phy_dma = BFA_MEM_PHY_DMA(bfa);
 
 	WARN_ON((cfg == NULL) || (meminfo == NULL));
 
@@ -1417,6 +1428,8 @@ bfa_cfg_get_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
 	bfa_mem_dma_setup(meminfo, flash_dma,
 			  bfa_flash_meminfo(cfg->drvcfg.min_cfg));
 	bfa_mem_dma_setup(meminfo, diag_dma, bfa_diag_meminfo());
+	bfa_mem_dma_setup(meminfo, phy_dma,
+			  bfa_phy_meminfo(cfg->drvcfg.min_cfg));
 }
 
 /*
@@ -1488,6 +1501,7 @@ bfa_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 	bfa_com_sfp_attach(bfa);
 	bfa_com_flash_attach(bfa, cfg->drvcfg.min_cfg);
 	bfa_com_diag_attach(bfa);
+	bfa_com_phy_attach(bfa, cfg->drvcfg.min_cfg);
 }
 
 /*

drivers/scsi/bfa/bfa_defs.h

@@ -170,6 +170,7 @@ enum bfa_status {
 	BFA_STATUS_TRUNK_DISABLED  = 165, /* Trunking is disabled on
 					   * the adapter */
 	BFA_STATUS_IOPROFILE_OFF = 175, /* IO profile OFF */
+	BFA_STATUS_PHY_NOT_PRESENT = 183, /* PHY module not present */
 	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 */
@@ -939,6 +940,42 @@ struct bfa_diag_loopback_s {
 	u8	rsvd[2];
 };
 
+/*
+ *	PHY module specific
+ */
+enum bfa_phy_status_e {
+	BFA_PHY_STATUS_GOOD	= 0, /* phy is good */
+	BFA_PHY_STATUS_NOT_PRESENT	= 1, /* phy does not exist */
+	BFA_PHY_STATUS_BAD	= 2, /* phy is bad */
+};
+
+/*
+ * phy attributes for phy query
+ */
+struct bfa_phy_attr_s {
+	u32	status;         /* phy present/absent status */
+	u32	length;         /* firmware length */
+	u32	fw_ver;         /* firmware version */
+	u32	an_status;      /* AN status */
+	u32	pma_pmd_status; /* PMA/PMD link status */
+	u32	pma_pmd_signal; /* PMA/PMD signal detect */
+	u32	pcs_status;     /* PCS link status */
+};
+
+/*
+ * phy stats
+ */
+struct bfa_phy_stats_s {
+	u32	status;         /* phy stats status */
+	u32	link_breaks;    /* Num of link breaks after linkup */
+	u32	pma_pmd_fault;  /* NPMA/PMD fault */
+	u32	pcs_fault;      /* PCS fault */
+	u32	speed_neg;      /* Num of speed negotiation */
+	u32	tx_eq_training; /* Num of TX EQ training */
+	u32	tx_eq_timeout;  /* Num of TX EQ timeout */
+	u32	crc_error;      /* Num of CRC errors */
+};
+
 #pragma pack()
 
 #endif /* __BFA_DEFS_H__ */

drivers/scsi/bfa/bfa_ioc.h

@@ -632,6 +632,60 @@ bfa_status_t	bfa_diag_beacon_port(struct bfa_diag_s *diag,
 			bfa_boolean_t beacon, bfa_boolean_t link_e2e_beacon,
 			u32 sec);
 
+/*
+ *	PHY module specific
+ */
+typedef void (*bfa_cb_phy_t) (void *cbarg, bfa_status_t status);
+
+struct bfa_phy_s {
+	struct bfa_ioc_s *ioc;          /* back pointer to ioc */
+	struct bfa_trc_mod_s *trcmod;   /* trace module */
+	u8	instance;       /* port instance */
+	u8	op_busy;        /* operation busy flag */
+	u8	rsv[2];
+	u32	residue;        /* residual length */
+	u32	offset;         /* offset */
+	bfa_status_t	status;         /* status */
+	u8	*dbuf_kva;      /* dma buf virtual address */
+	u64	dbuf_pa;        /* dma buf physical address */
+	struct bfa_reqq_wait_s reqq_wait; /* to wait for room in reqq */
+	bfa_cb_phy_t	cbfn;           /* user callback function */
+	void		*cbarg;         /* user callback arg */
+	u8		*ubuf;          /* user supplied buffer */
+	struct bfa_cb_qe_s	hcb_qe; /* comp: BFA callback qelem */
+	u32	addr_off;       /* phy address offset */
+	struct bfa_mbox_cmd_s	mb;       /* mailbox */
+	struct bfa_ioc_notify_s	ioc_notify; /* ioc event notify */
+	struct bfa_mem_dma_s	phy_dma;
+};
+
+#define BFA_PHY(__bfa)	(&(__bfa)->modules.phy)
+#define BFA_MEM_PHY_DMA(__bfa)	(&(BFA_PHY(__bfa)->phy_dma))
+
+bfa_boolean_t bfa_phy_busy(struct bfa_ioc_s *ioc);
+bfa_status_t bfa_phy_get_attr(struct bfa_phy_s *phy, u8 instance,
+			struct bfa_phy_attr_s *attr,
+			bfa_cb_phy_t cbfn, void *cbarg);
+bfa_status_t bfa_phy_get_stats(struct bfa_phy_s *phy, u8 instance,
+			struct bfa_phy_stats_s *stats,
+			bfa_cb_phy_t cbfn, void *cbarg);
+bfa_status_t bfa_phy_update(struct bfa_phy_s *phy, u8 instance,
+			void *buf, u32 len, u32 offset,
+			bfa_cb_phy_t cbfn, void *cbarg);
+bfa_status_t bfa_phy_read(struct bfa_phy_s *phy, u8 instance,
+			void *buf, u32 len, u32 offset,
+			bfa_cb_phy_t cbfn, void *cbarg);
+
+u32	bfa_phy_meminfo(bfa_boolean_t mincfg);
+void bfa_phy_attach(struct bfa_phy_s *phy, struct bfa_ioc_s *ioc,
+		void *dev, struct bfa_trc_mod_s *trcmod, bfa_boolean_t mincfg);
+void bfa_phy_memclaim(struct bfa_phy_s *phy,
+		u8 *dm_kva, u64 dm_pa, bfa_boolean_t mincfg);
+void bfa_phy_intr(void *phyarg, struct bfi_mbmsg_s *msg);
+
+/*
+ *	IOC specfic macros
+ */
 #define bfa_ioc_pcifn(__ioc)		((__ioc)->pcidev.pci_func)
 #define bfa_ioc_devid(__ioc)		((__ioc)->pcidev.device_id)
 #define bfa_ioc_bar0(__ioc)		((__ioc)->pcidev.pci_bar_kva)

drivers/scsi/bfa/bfa_modules.h

@@ -43,6 +43,7 @@ struct bfa_modules_s {
 	struct bfa_sfp_s	sfp;		/*  SFP module	*/
 	struct bfa_flash_s	flash;		/*  flash module */
 	struct bfa_diag_s	diag_mod;	/*  diagnostics module	*/
+	struct bfa_phy_s	phy;		/*  phy module		*/
 };
 
 /*

drivers/scsi/bfa/bfa_port.c

@@ -469,6 +469,7 @@ bfa_port_attach(struct bfa_port_s *port, struct bfa_ioc_s *ioc,
 	port->pbc_disabled = BFA_FALSE;
 
 	bfa_ioc_mbox_regisr(port->ioc, BFI_MC_PORT, bfa_port_isr, port);
+	bfa_q_qe_init(&port->ioc_notify);
 	bfa_ioc_notify_init(&port->ioc_notify, bfa_port_notify, port);
 	list_add_tail(&port->ioc_notify.qe, &port->ioc->notify_q);
 

drivers/scsi/bfa/bfad_bsg.c

@@ -1393,6 +1393,110 @@ bfad_iocmd_diag_lb_stat(struct bfad_s *bfad, void *cmd)
 	return 0;
 }
 
+int
+bfad_iocmd_phy_get_attr(struct bfad_s *bfad, void *cmd)
+{
+	struct bfa_bsg_phy_attr_s *iocmd =
+			(struct bfa_bsg_phy_attr_s *)cmd;
+	struct bfad_hal_comp fcomp;
+	unsigned long	flags;
+
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_phy_get_attr(BFA_PHY(&bfad->bfa), iocmd->instance,
+				&iocmd->attr, bfad_hcb_comp, &fcomp);
+	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+	if (iocmd->status != BFA_STATUS_OK)
+		goto out;
+	wait_for_completion(&fcomp.comp);
+	iocmd->status = fcomp.status;
+out:
+	return 0;
+}
+
+int
+bfad_iocmd_phy_get_stats(struct bfad_s *bfad, void *cmd)
+{
+	struct bfa_bsg_phy_stats_s *iocmd =
+			(struct bfa_bsg_phy_stats_s *)cmd;
+	struct bfad_hal_comp fcomp;
+	unsigned long	flags;
+
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_phy_get_stats(BFA_PHY(&bfad->bfa), iocmd->instance,
+				&iocmd->stats, bfad_hcb_comp, &fcomp);
+	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+	if (iocmd->status != BFA_STATUS_OK)
+		goto out;
+	wait_for_completion(&fcomp.comp);
+	iocmd->status = fcomp.status;
+out:
+	return 0;
+}
+
+int
+bfad_iocmd_phy_read(struct bfad_s *bfad, void *cmd, unsigned int payload_len)
+{
+	struct bfa_bsg_phy_s *iocmd = (struct bfa_bsg_phy_s *)cmd;
+	struct bfad_hal_comp fcomp;
+	void	*iocmd_bufptr;
+	unsigned long	flags;
+
+	if (bfad_chk_iocmd_sz(payload_len,
+			sizeof(struct bfa_bsg_phy_s),
+			iocmd->bufsz) != BFA_STATUS_OK) {
+		iocmd->status = BFA_STATUS_VERSION_FAIL;
+		return 0;
+	}
+
+	iocmd_bufptr = (char *)iocmd + sizeof(struct bfa_bsg_phy_s);
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_phy_read(BFA_PHY(&bfad->bfa),
+				iocmd->instance, iocmd_bufptr, iocmd->bufsz,
+				0, bfad_hcb_comp, &fcomp);
+	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+	if (iocmd->status != BFA_STATUS_OK)
+		goto out;
+	wait_for_completion(&fcomp.comp);
+	iocmd->status = fcomp.status;
+	if (iocmd->status != BFA_STATUS_OK)
+		goto out;
+out:
+	return 0;
+}
+
+int
+bfad_iocmd_phy_update(struct bfad_s *bfad, void *cmd, unsigned int payload_len)
+{
+	struct bfa_bsg_phy_s *iocmd = (struct bfa_bsg_phy_s *)cmd;
+	void	*iocmd_bufptr;
+	struct bfad_hal_comp fcomp;
+	unsigned long	flags;
+
+	if (bfad_chk_iocmd_sz(payload_len,
+			sizeof(struct bfa_bsg_phy_s),
+			iocmd->bufsz) != BFA_STATUS_OK) {
+		iocmd->status = BFA_STATUS_VERSION_FAIL;
+		return 0;
+	}
+
+	iocmd_bufptr = (char *)iocmd + sizeof(struct bfa_bsg_phy_s);
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_phy_update(BFA_PHY(&bfad->bfa),
+				iocmd->instance, iocmd_bufptr, iocmd->bufsz,
+				0, bfad_hcb_comp, &fcomp);
+	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+	if (iocmd->status != BFA_STATUS_OK)
+		goto out;
+	wait_for_completion(&fcomp.comp);
+	iocmd->status = fcomp.status;
+out:
+	return 0;
+}
+
 static int
 bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
 		unsigned int payload_len)
@@ -1566,6 +1670,18 @@ bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
 	case IOCMD_DIAG_LB_STAT:
 		rc = bfad_iocmd_diag_lb_stat(bfad, iocmd);
 		break;
+	case IOCMD_PHY_GET_ATTR:
+		rc = bfad_iocmd_phy_get_attr(bfad, iocmd);
+		break;
+	case IOCMD_PHY_GET_STATS:
+		rc = bfad_iocmd_phy_get_stats(bfad, iocmd);
+		break;
+	case IOCMD_PHY_UPDATE_FW:
+		rc = bfad_iocmd_phy_update(bfad, iocmd, payload_len);
+		break;
+	case IOCMD_PHY_READ_FW:
+		rc = bfad_iocmd_phy_read(bfad, iocmd, payload_len);
+		break;
 	default:
 		rc = EINVAL;
 		break;

drivers/scsi/bfa/bfad_bsg.h

@@ -80,6 +80,10 @@ enum {
 	IOCMD_DIAG_LED,
 	IOCMD_DIAG_BEACON_LPORT,
 	IOCMD_DIAG_LB_STAT,
+	IOCMD_PHY_GET_ATTR,
+	IOCMD_PHY_GET_STATS,
+	IOCMD_PHY_UPDATE_FW,
+	IOCMD_PHY_READ_FW,
 };
 
 struct bfa_bsg_gen_s {
@@ -440,6 +444,28 @@ struct bfa_bsg_diag_lb_stat_s {
 	u16		rsvd;
 };
 
+struct bfa_bsg_phy_attr_s {
+	bfa_status_t	status;
+	u16	bfad_num;
+	u16	instance;
+	struct bfa_phy_attr_s	attr;
+};
+
+struct bfa_bsg_phy_s {
+	bfa_status_t	status;
+	u16	bfad_num;
+	u16	instance;
+	u64	bufsz;
+	u64	buf_ptr;
+};
+
+struct bfa_bsg_phy_stats_s {
+	bfa_status_t	status;
+	u16	bfad_num;
+	u16	instance;
+	struct bfa_phy_stats_s	stats;
+};
+
 struct bfa_bsg_fcpt_s {
 	bfa_status_t    status;
 	u16		vf_id;

drivers/scsi/bfa/bfi.h

@@ -209,6 +209,7 @@ enum bfi_mclass {
 	BFI_MC_TSKIM		= 18,	/*  Initiator Task management	    */
 	BFI_MC_PORT		= 21,	/*  Physical port		    */
 	BFI_MC_SFP		= 22,	/*  SFP module	*/
+	BFI_MC_PHY		= 25,   /*  External PHY message class	*/
 	BFI_MC_MAX		= 32
 };
 
@@ -1030,6 +1031,102 @@ struct bfi_diag_qtest_req_s {
 };
 #define bfi_diag_qtest_rsp_t struct bfi_diag_qtest_req_s
 
+/*
+ *	PHY module specific
+ */
+enum bfi_phy_h2i_msgs_e {
+	BFI_PHY_H2I_QUERY_REQ = 1,
+	BFI_PHY_H2I_STATS_REQ = 2,
+	BFI_PHY_H2I_WRITE_REQ = 3,
+	BFI_PHY_H2I_READ_REQ = 4,
+};
+
+enum bfi_phy_i2h_msgs_e {
+	BFI_PHY_I2H_QUERY_RSP = BFA_I2HM(1),
+	BFI_PHY_I2H_STATS_RSP = BFA_I2HM(2),
+	BFI_PHY_I2H_WRITE_RSP = BFA_I2HM(3),
+	BFI_PHY_I2H_READ_RSP = BFA_I2HM(4),
+};
+
+/*
+ * External PHY query request
+ */
+struct bfi_phy_query_req_s {
+	struct bfi_mhdr_s	mh;             /* Common msg header */
+	u8			instance;
+	u8			rsv[3];
+	struct bfi_alen_s	alen;
+};
+
+/*
+ * External PHY stats request
+ */
+struct bfi_phy_stats_req_s {
+	struct bfi_mhdr_s	mh;             /* Common msg header */
+	u8			instance;
+	u8			rsv[3];
+	struct bfi_alen_s	alen;
+};
+
+/*
+ * External PHY write request
+ */
+struct bfi_phy_write_req_s {
+	struct bfi_mhdr_s	mh;             /* Common msg header */
+	u8		instance;
+	u8		last;
+	u8		rsv[2];
+	u32		offset;
+	u32		length;
+	struct bfi_alen_s	alen;
+};
+
+/*
+ * External PHY read request
+ */
+struct bfi_phy_read_req_s {
+	struct bfi_mhdr_s	mh;	/* Common msg header */
+	u8		instance;
+	u8		rsv[3];
+	u32		offset;
+	u32		length;
+	struct bfi_alen_s	alen;
+};
+
+/*
+ * External PHY query response
+ */
+struct bfi_phy_query_rsp_s {
+	struct bfi_mhdr_s	mh;	/* Common msg header */
+	u32			status;
+};
+
+/*
+ * External PHY stats response
+ */
+struct bfi_phy_stats_rsp_s {
+	struct bfi_mhdr_s	mh;	/* Common msg header */
+	u32			status;
+};
+
+/*
+ * External PHY read response
+ */
+struct bfi_phy_read_rsp_s {
+	struct bfi_mhdr_s	mh;	/* Common msg header */
+	u32			status;
+	u32		length;
+};
+
+/*
+ * External PHY write response
+ */
+struct bfi_phy_write_rsp_s {
+	struct bfi_mhdr_s	mh;	/* Common msg header */
+	u32			status;
+	u32			length;
+};
+
 #pragma pack()
 
 #endif /* __BFI_H__ */