[SCSI] bfa: Added support for flash configuration

- Added flash sub-module.
- Implemented the interface to read/erase/update flash partition.

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

9 files changed, 910 insertions, 47 deletions

diff --git a/drivers/scsi/bfa/bfa.h b/drivers/scsi/bfa/bfa.h
index c7cfc58..3b0af11 100644
--- a/drivers/scsi/bfa/bfa.h
+++ b/drivers/scsi/bfa/bfa.h
@@ -27,7 +27,6 @@
 struct bfa_s;
 
 typedef void (*bfa_isr_func_t) (struct bfa_s *bfa, struct bfi_msg_s *m);
-typedef void    (*bfa_cb_cbfn_t) (void *cbarg, bfa_boolean_t complete);
 
 /*
  * Interrupt message handlers
@@ -77,16 +76,6 @@ void bfa_isr_unhandled(struct bfa_s *bfa, struct bfi_msg_s *m);
 } while (0)
 
 /*
- * Queue element to wait for room in request queue. FIFO order is
- * maintained when fullfilling requests.
- */
-struct bfa_reqq_wait_s {
-	struct list_head	qe;
-	void		(*qresume) (void *cbarg);
-	void		*cbarg;
-};
-
-/*
  * Circular queue usage assignments
  */
 enum {
@@ -129,17 +118,6 @@ bfa_reqq_winit(struct bfa_reqq_wait_s *wqe, void (*qresume) (void *cbarg),
 
 #define bfa_reqq_wcancel(__wqe)	list_del(&(__wqe)->qe)
 
-
-/*
- * Generic BFA callback element.
- */
-struct bfa_cb_qe_s {
-	struct list_head         qe;
-	bfa_cb_cbfn_t  cbfn;
-	bfa_boolean_t   once;
-	void           *cbarg;
-};
-
 #define bfa_cb_queue(__bfa, __hcb_qe, __cbfn, __cbarg) do {	\
 		(__hcb_qe)->cbfn  = (__cbfn);      \
 		(__hcb_qe)->cbarg = (__cbarg);      \
diff --git a/drivers/scsi/bfa/bfa_core.c b/drivers/scsi/bfa/bfa_core.c
index 3ba73fa..04d3620 100644
--- a/drivers/scsi/bfa/bfa_core.c
+++ b/drivers/scsi/bfa/bfa_core.c
@@ -132,6 +132,17 @@ bfa_com_sfp_attach(struct bfa_s *bfa)
 	bfa_sfp_memclaim(sfp, sfp_dma->kva_curp, sfp_dma->dma_curp);
 }
 
+static void
+bfa_com_flash_attach(struct bfa_s *bfa, bfa_boolean_t mincfg)
+{
+	struct bfa_flash_s	*flash = BFA_FLASH(bfa);
+	struct bfa_mem_dma_s	*flash_dma = BFA_MEM_FLASH_DMA(bfa);
+
+	bfa_flash_attach(flash, &bfa->ioc, bfa, bfa->trcmod, mincfg);
+	bfa_flash_memclaim(flash, flash_dma->kva_curp,
+			   flash_dma->dma_curp, mincfg);
+}
+
 /*
  * BFA IOC FC related definitions
  */
@@ -1371,6 +1382,7 @@ bfa_cfg_get_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
 	struct bfa_mem_dma_s *ablk_dma = BFA_MEM_ABLK_DMA(bfa);
 	struct bfa_mem_dma_s *cee_dma = BFA_MEM_CEE_DMA(bfa);
 	struct bfa_mem_dma_s *sfp_dma = BFA_MEM_SFP_DMA(bfa);
+	struct bfa_mem_dma_s *flash_dma = BFA_MEM_FLASH_DMA(bfa);
 
 	WARN_ON((cfg == NULL) || (meminfo == NULL));
 
@@ -1390,6 +1402,8 @@ bfa_cfg_get_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
 	bfa_mem_dma_setup(meminfo, ablk_dma, bfa_ablk_meminfo());
 	bfa_mem_dma_setup(meminfo, cee_dma, bfa_cee_meminfo());
 	bfa_mem_dma_setup(meminfo, sfp_dma, bfa_sfp_meminfo());
+	bfa_mem_dma_setup(meminfo, flash_dma,
+			  bfa_flash_meminfo(cfg->drvcfg.min_cfg));
 }
 
 /*
@@ -1459,6 +1473,7 @@ bfa_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 	bfa_com_ablk_attach(bfa);
 	bfa_com_cee_attach(bfa);
 	bfa_com_sfp_attach(bfa);
+	bfa_com_flash_attach(bfa, cfg->drvcfg.min_cfg);
 }
 
 /*
diff --git a/drivers/scsi/bfa/bfa_defs.h b/drivers/scsi/bfa/bfa_defs.h
index 715d9f9..97ad07c 100644
--- a/drivers/scsi/bfa/bfa_defs.h
+++ b/drivers/scsi/bfa/bfa_defs.h
@@ -133,6 +133,7 @@ enum bfa_status {
 	BFA_STATUS_SFP_UNSUPP	= 10,	/*  Unsupported SFP - Replace SFP */
 	BFA_STATUS_UNKNOWN_VFID = 11,	/*  VF_ID not found */
 	BFA_STATUS_DEVBUSY	= 13,	/*  Device busy - Retry operation */
+	BFA_STATUS_FLASH_BAD_LEN = 17,	/*  Flash bad length */
 	BFA_STATUS_UNKNOWN_LWWN = 18,	/*  LPORT PWWN not found */
 	BFA_STATUS_UNKNOWN_RWWN = 19,	/*  RPORT PWWN not found */
 	BFA_STATUS_VPORT_EXISTS = 21,	/*  VPORT already exists */
@@ -384,31 +385,39 @@ struct bfa_ioc_attr_s {
  * All numerical fields are in big-endian format.
  */
 struct bfa_mfg_block_s {
-	u8		version;	/*  manufacturing block version */
-	u8		mfg_sig[3];	/*  characters 'M', 'F', 'G' */
-	u16	mfgsize;	/*  mfg block size */
-	u16	u16_chksum;	/*  old u16 checksum */
-	char		brcd_serialnum[STRSZ(BFA_MFG_SERIALNUM_SIZE)];
-	char		brcd_partnum[STRSZ(BFA_MFG_PARTNUM_SIZE)];
-	u8		mfg_day;	/*  manufacturing day */
-	u8		mfg_month;	/*  manufacturing month */
-	u16	mfg_year;	/*  manufacturing year */
-	wwn_t		mfg_wwn;	/*  wwn base for this adapter */
-	u8		num_wwn;	/*  number of wwns assigned */
-	u8		mfg_speeds;	/*  speeds allowed for this adapter */
-	u8		rsv[2];
-	char		supplier_id[STRSZ(BFA_MFG_SUPPLIER_ID_SIZE)];
-	char		supplier_partnum[STRSZ(BFA_MFG_SUPPLIER_PARTNUM_SIZE)];
-	char
-		supplier_serialnum[STRSZ(BFA_MFG_SUPPLIER_SERIALNUM_SIZE)];
-	char
-		supplier_revision[STRSZ(BFA_MFG_SUPPLIER_REVISION_SIZE)];
-	mac_t		mfg_mac;	/*  mac address */
-	u8		num_mac;	/*  number of mac addresses */
-	u8		rsv2;
-	u32	mfg_type;	/*  card type */
-	u8		rsv3[108];
-	u8		md5_chksum[BFA_MFG_CHKSUM_SIZE]; /*  md5 checksum */
+	u8	version;    /*!< manufacturing block version */
+	u8     mfg_sig[3]; /*!< characters 'M', 'F', 'G' */
+	u16    mfgsize;    /*!< mfg block size */
+	u16    u16_chksum; /*!< old u16 checksum */
+	char        brcd_serialnum[STRSZ(BFA_MFG_SERIALNUM_SIZE)];
+	char        brcd_partnum[STRSZ(BFA_MFG_PARTNUM_SIZE)];
+	u8     mfg_day;    /*!< manufacturing day */
+	u8     mfg_month;  /*!< manufacturing month */
+	u16    mfg_year;   /*!< manufacturing year */
+	wwn_t       mfg_wwn;    /*!< wwn base for this adapter */
+	u8     num_wwn;    /*!< number of wwns assigned */
+	u8     mfg_speeds; /*!< speeds allowed for this adapter */
+	u8     rsv[2];
+	char    supplier_id[STRSZ(BFA_MFG_SUPPLIER_ID_SIZE)];
+	char    supplier_partnum[STRSZ(BFA_MFG_SUPPLIER_PARTNUM_SIZE)];
+	char    supplier_serialnum[STRSZ(BFA_MFG_SUPPLIER_SERIALNUM_SIZE)];
+	char    supplier_revision[STRSZ(BFA_MFG_SUPPLIER_REVISION_SIZE)];
+	mac_t       mfg_mac;    /*!< base mac address */
+	u8     num_mac;    /*!< number of mac addresses */
+	u8     rsv2;
+	u32    card_type;  /*!< card type          */
+	char        cap_nic;    /*!< capability nic     */
+	char        cap_cna;    /*!< capability cna     */
+	char        cap_hba;    /*!< capability hba     */
+	char        cap_fc16g;  /*!< capability fc 16g      */
+	char        cap_sriov;  /*!< capability sriov       */
+	char        cap_mezz;   /*!< capability mezz        */
+	u8     rsv3;
+	u8     mfg_nports; /*!< number of ports        */
+	char        media[8];   /*!< xfi/xaui           */
+	char        initial_mode[8]; /*!< initial mode: hba/cna/nic */
+	u8     rsv4[84];
+	u8     md5_chksum[BFA_MFG_CHKSUM_SIZE]; /*!< md5 checksum */
 };
 
 #pragma pack()
@@ -825,6 +834,53 @@ struct sfp_xcvr_s {
 	union sfp_xcvr_fc3_code_u	fc3;
 };
 
+/*
+ *	Flash module specific
+ */
+#define BFA_FLASH_PART_ENTRY_SIZE	32	/* partition entry size */
+#define BFA_FLASH_PART_MAX		32	/* maximal # of partitions */
+
+enum bfa_flash_part_type {
+	BFA_FLASH_PART_OPTROM   = 1,    /* option rom partition */
+	BFA_FLASH_PART_FWIMG    = 2,    /* firmware image partition */
+	BFA_FLASH_PART_FWCFG    = 3,    /* firmware tuneable config */
+	BFA_FLASH_PART_DRV      = 4,    /* IOC driver config */
+	BFA_FLASH_PART_BOOT     = 5,    /* boot config */
+	BFA_FLASH_PART_ASIC     = 6,    /* asic bootstrap configuration */
+	BFA_FLASH_PART_MFG      = 7,    /* manufacturing block partition */
+	BFA_FLASH_PART_OPTROM2  = 8,    /* 2nd option rom partition */
+	BFA_FLASH_PART_VPD      = 9,    /* vpd data of OEM info */
+	BFA_FLASH_PART_PBC      = 10,   /* pre-boot config */
+	BFA_FLASH_PART_BOOTOVL  = 11,   /* boot overlay partition */
+	BFA_FLASH_PART_LOG      = 12,   /* firmware log partition */
+	BFA_FLASH_PART_PXECFG   = 13,   /* pxe boot config partition */
+	BFA_FLASH_PART_PXEOVL   = 14,   /* pxe boot overlay partition */
+	BFA_FLASH_PART_PORTCFG  = 15,   /* port cfg partition */
+	BFA_FLASH_PART_ASICBK   = 16,   /* asic backup partition */
+};
+
+/*
+ * flash partition attributes
+ */
+struct bfa_flash_part_attr_s {
+	u32	part_type;      /* partition type */
+	u32	part_instance;  /* partition instance */
+	u32	part_off;       /* partition offset */
+	u32	part_size;      /* partition size */
+	u32	part_len;       /* partition content length */
+	u32	part_status;    /* partition status */
+	char	rsv[BFA_FLASH_PART_ENTRY_SIZE - 24];
+};
+
+/*
+ * flash attributes
+ */
+struct bfa_flash_attr_s {
+	u32	status; /* flash overall status */
+	u32	npart;  /* num of partitions */
+	struct bfa_flash_part_attr_s part[BFA_FLASH_PART_MAX];
+};
+
 #pragma pack()
 
 #endif /* __BFA_DEFS_H__ */
diff --git a/drivers/scsi/bfa/bfa_ioc.c b/drivers/scsi/bfa/bfa_ioc.c
index d579036..1506073 100644
--- a/drivers/scsi/bfa/bfa_ioc.c
+++ b/drivers/scsi/bfa/bfa_ioc.c
@@ -3821,3 +3821,497 @@ bfa_sfp_speed(struct bfa_sfp_s *sfp, enum bfa_port_speed portspeed,
 
 	return bfa_sfp_speed_valid(sfp, portspeed);
 }
+
+/*
+ *	Flash module specific
+ */
+
+/*
+ * FLASH DMA buffer should be big enough to hold both MFG block and
+ * asic block(64k) at the same time and also should be 2k aligned to
+ * avoid write segement to cross sector boundary.
+ */
+#define BFA_FLASH_SEG_SZ	2048
+#define BFA_FLASH_DMA_BUF_SZ	\
+	BFA_ROUNDUP(0x010000 + sizeof(struct bfa_mfg_block_s), BFA_FLASH_SEG_SZ)
+
+static void
+bfa_flash_cb(struct bfa_flash_s *flash)
+{
+	flash->op_busy = 0;
+	if (flash->cbfn)
+		flash->cbfn(flash->cbarg, flash->status);
+}
+
+static void
+bfa_flash_notify(void *cbarg, enum bfa_ioc_event_e event)
+{
+	struct bfa_flash_s	*flash = cbarg;
+
+	bfa_trc(flash, event);
+	switch (event) {
+	case BFA_IOC_E_DISABLED:
+	case BFA_IOC_E_FAILED:
+		if (flash->op_busy) {
+			flash->status = BFA_STATUS_IOC_FAILURE;
+			flash->cbfn(flash->cbarg, flash->status);
+			flash->op_busy = 0;
+		}
+		break;
+
+	default:
+		break;
+	}
+}
+
+/*
+ * Send flash attribute query request.
+ *
+ * @param[in] cbarg - callback argument
+ */
+static void
+bfa_flash_query_send(void *cbarg)
+{
+	struct bfa_flash_s *flash = cbarg;
+	struct bfi_flash_query_req_s *msg =
+			(struct bfi_flash_query_req_s *) flash->mb.msg;
+
+	bfi_h2i_set(msg->mh, BFI_MC_FLASH, BFI_FLASH_H2I_QUERY_REQ,
+		bfa_ioc_portid(flash->ioc));
+	bfa_alen_set(&msg->alen, sizeof(struct bfa_flash_attr_s),
+		flash->dbuf_pa);
+	bfa_ioc_mbox_queue(flash->ioc, &flash->mb);
+}
+
+/*
+ * Send flash write request.
+ *
+ * @param[in] cbarg - callback argument
+ */
+static void
+bfa_flash_write_send(struct bfa_flash_s *flash)
+{
+	struct bfi_flash_write_req_s *msg =
+			(struct bfi_flash_write_req_s *) flash->mb.msg;
+	u32	len;
+
+	msg->type = be32_to_cpu(flash->type);
+	msg->instance = flash->instance;
+	msg->offset = be32_to_cpu(flash->addr_off + flash->offset);
+	len = (flash->residue < BFA_FLASH_DMA_BUF_SZ) ?
+		flash->residue : BFA_FLASH_DMA_BUF_SZ;
+	msg->length = be32_to_cpu(len);
+
+	/* indicate if it's the last msg of the whole write operation */
+	msg->last = (len == flash->residue) ? 1 : 0;
+
+	bfi_h2i_set(msg->mh, BFI_MC_FLASH, BFI_FLASH_H2I_WRITE_REQ,
+			bfa_ioc_portid(flash->ioc));
+	bfa_alen_set(&msg->alen, len, flash->dbuf_pa);
+	memcpy(flash->dbuf_kva, flash->ubuf + flash->offset, len);
+	bfa_ioc_mbox_queue(flash->ioc, &flash->mb);
+
+	flash->residue -= len;
+	flash->offset += len;
+}
+
+/*
+ * Send flash read request.
+ *
+ * @param[in] cbarg - callback argument
+ */
+static void
+bfa_flash_read_send(void *cbarg)
+{
+	struct bfa_flash_s *flash = cbarg;
+	struct bfi_flash_read_req_s *msg =
+			(struct bfi_flash_read_req_s *) flash->mb.msg;
+	u32	len;
+
+	msg->type = be32_to_cpu(flash->type);
+	msg->instance = flash->instance;
+	msg->offset = be32_to_cpu(flash->addr_off + flash->offset);
+	len = (flash->residue < BFA_FLASH_DMA_BUF_SZ) ?
+			flash->residue : BFA_FLASH_DMA_BUF_SZ;
+	msg->length = be32_to_cpu(len);
+	bfi_h2i_set(msg->mh, BFI_MC_FLASH, BFI_FLASH_H2I_READ_REQ,
+		bfa_ioc_portid(flash->ioc));
+	bfa_alen_set(&msg->alen, len, flash->dbuf_pa);
+	bfa_ioc_mbox_queue(flash->ioc, &flash->mb);
+}
+
+/*
+ * Send flash erase request.
+ *
+ * @param[in] cbarg - callback argument
+ */
+static void
+bfa_flash_erase_send(void *cbarg)
+{
+	struct bfa_flash_s *flash = cbarg;
+	struct bfi_flash_erase_req_s *msg =
+			(struct bfi_flash_erase_req_s *) flash->mb.msg;
+
+	msg->type = be32_to_cpu(flash->type);
+	msg->instance = flash->instance;
+	bfi_h2i_set(msg->mh, BFI_MC_FLASH, BFI_FLASH_H2I_ERASE_REQ,
+			bfa_ioc_portid(flash->ioc));
+	bfa_ioc_mbox_queue(flash->ioc, &flash->mb);
+}
+
+/*
+ * Process flash response messages upon receiving interrupts.
+ *
+ * @param[in] flasharg - flash structure
+ * @param[in] msg - message structure
+ */
+static void
+bfa_flash_intr(void *flasharg, struct bfi_mbmsg_s *msg)
+{
+	struct bfa_flash_s *flash = flasharg;
+	u32	status;
+
+	union {
+		struct bfi_flash_query_rsp_s *query;
+		struct bfi_flash_erase_rsp_s *erase;
+		struct bfi_flash_write_rsp_s *write;
+		struct bfi_flash_read_rsp_s *read;
+		struct bfi_mbmsg_s   *msg;
+	} m;
+
+	m.msg = msg;
+	bfa_trc(flash, msg->mh.msg_id);
+
+	if (!flash->op_busy && msg->mh.msg_id != BFI_FLASH_I2H_EVENT) {
+		/* receiving response after ioc failure */
+		bfa_trc(flash, 0x9999);
+		return;
+	}
+
+	switch (msg->mh.msg_id) {
+	case BFI_FLASH_I2H_QUERY_RSP:
+		status = be32_to_cpu(m.query->status);
+		bfa_trc(flash, status);
+		if (status == BFA_STATUS_OK) {
+			u32	i;
+			struct bfa_flash_attr_s *attr, *f;
+
+			attr = (struct bfa_flash_attr_s *) flash->ubuf;
+			f = (struct bfa_flash_attr_s *) flash->dbuf_kva;
+			attr->status = be32_to_cpu(f->status);
+			attr->npart = be32_to_cpu(f->npart);
+			bfa_trc(flash, attr->status);
+			bfa_trc(flash, attr->npart);
+			for (i = 0; i < attr->npart; i++) {
+				attr->part[i].part_type =
+					be32_to_cpu(f->part[i].part_type);
+				attr->part[i].part_instance =
+					be32_to_cpu(f->part[i].part_instance);
+				attr->part[i].part_off =
+					be32_to_cpu(f->part[i].part_off);
+				attr->part[i].part_size =
+					be32_to_cpu(f->part[i].part_size);
+				attr->part[i].part_len =
+					be32_to_cpu(f->part[i].part_len);
+				attr->part[i].part_status =
+					be32_to_cpu(f->part[i].part_status);
+			}
+		}
+		flash->status = status;
+		bfa_flash_cb(flash);
+		break;
+	case BFI_FLASH_I2H_ERASE_RSP:
+		status = be32_to_cpu(m.erase->status);
+		bfa_trc(flash, status);
+		flash->status = status;
+		bfa_flash_cb(flash);
+		break;
+	case BFI_FLASH_I2H_WRITE_RSP:
+		status = be32_to_cpu(m.write->status);
+		bfa_trc(flash, status);
+		if (status != BFA_STATUS_OK || flash->residue == 0) {
+			flash->status = status;
+			bfa_flash_cb(flash);
+		} else {
+			bfa_trc(flash, flash->offset);
+			bfa_flash_write_send(flash);
+		}
+		break;
+	case BFI_FLASH_I2H_READ_RSP:
+		status = be32_to_cpu(m.read->status);
+		bfa_trc(flash, status);
+		if (status != BFA_STATUS_OK) {
+			flash->status = status;
+			bfa_flash_cb(flash);
+		} else {
+			u32 len = be32_to_cpu(m.read->length);
+			bfa_trc(flash, flash->offset);
+			bfa_trc(flash, len);
+			memcpy(flash->ubuf + flash->offset,
+				flash->dbuf_kva, len);
+			flash->residue -= len;
+			flash->offset += len;
+			if (flash->residue == 0) {
+				flash->status = status;
+				bfa_flash_cb(flash);
+			} else
+				bfa_flash_read_send(flash);
+		}
+		break;
+	case BFI_FLASH_I2H_BOOT_VER_RSP:
+	case BFI_FLASH_I2H_EVENT:
+		bfa_trc(flash, msg->mh.msg_id);
+		break;
+
+	default:
+		WARN_ON(1);
+	}
+}
+
+/*
+ * Flash memory info API.
+ *
+ * @param[in] mincfg - minimal cfg variable
+ */
+u32
+bfa_flash_meminfo(bfa_boolean_t mincfg)
+{
+	/* min driver doesn't need flash */
+	if (mincfg)
+		return 0;
+	return BFA_ROUNDUP(BFA_FLASH_DMA_BUF_SZ, BFA_DMA_ALIGN_SZ);
+}
+
+/*
+ * Flash attach API.
+ *
+ * @param[in] flash - flash structure
+ * @param[in] ioc  - ioc structure
+ * @param[in] dev  - device structure
+ * @param[in] trcmod - trace module
+ * @param[in] logmod - log module
+ */
+void
+bfa_flash_attach(struct bfa_flash_s *flash, struct bfa_ioc_s *ioc, void *dev,
+		struct bfa_trc_mod_s *trcmod, bfa_boolean_t mincfg)
+{
+	flash->ioc = ioc;
+	flash->trcmod = trcmod;
+	flash->cbfn = NULL;
+	flash->cbarg = NULL;
+	flash->op_busy = 0;
+
+	bfa_ioc_mbox_regisr(flash->ioc, BFI_MC_FLASH, bfa_flash_intr, flash);
+	bfa_q_qe_init(&flash->ioc_notify);
+	bfa_ioc_notify_init(&flash->ioc_notify, bfa_flash_notify, flash);
+	list_add_tail(&flash->ioc_notify.qe, &flash->ioc->notify_q);
+
+	/* min driver doesn't need flash */
+	if (mincfg) {
+		flash->dbuf_kva = NULL;
+		flash->dbuf_pa = 0;
+	}
+}
+
+/*
+ * Claim memory for flash
+ *
+ * @param[in] flash - flash structure
+ * @param[in] dm_kva - pointer to virtual memory address
+ * @param[in] dm_pa - physical memory address
+ * @param[in] mincfg - minimal cfg variable
+ */
+void
+bfa_flash_memclaim(struct bfa_flash_s *flash, u8 *dm_kva, u64 dm_pa,
+		bfa_boolean_t mincfg)
+{
+	if (mincfg)
+		return;
+
+	flash->dbuf_kva = dm_kva;
+	flash->dbuf_pa = dm_pa;
+	memset(flash->dbuf_kva, 0, BFA_FLASH_DMA_BUF_SZ);
+	dm_kva += BFA_ROUNDUP(BFA_FLASH_DMA_BUF_SZ, BFA_DMA_ALIGN_SZ);
+	dm_pa += BFA_ROUNDUP(BFA_FLASH_DMA_BUF_SZ, BFA_DMA_ALIGN_SZ);
+}
+
+/*
+ * Get flash attribute.
+ *
+ * @param[in] flash - flash structure
+ * @param[in] attr - flash attribute structure
+ * @param[in] cbfn - callback function
+ * @param[in] cbarg - callback argument
+ *
+ * Return status.
+ */
+bfa_status_t
+bfa_flash_get_attr(struct bfa_flash_s *flash, struct bfa_flash_attr_s *attr,
+		bfa_cb_flash_t cbfn, void *cbarg)
+{
+	bfa_trc(flash, BFI_FLASH_H2I_QUERY_REQ);
+
+	if (!bfa_ioc_is_operational(flash->ioc))
+		return BFA_STATUS_IOC_NON_OP;
+
+	if (flash->op_busy) {
+		bfa_trc(flash, flash->op_busy);
+		return BFA_STATUS_DEVBUSY;
+	}
+
+	flash->op_busy = 1;
+	flash->cbfn = cbfn;
+	flash->cbarg = cbarg;
+	flash->ubuf = (u8 *) attr;
+	bfa_flash_query_send(flash);
+
+	return BFA_STATUS_OK;
+}
+
+/*
+ * Erase flash partition.
+ *
+ * @param[in] flash - flash structure
+ * @param[in] type - flash partition type
+ * @param[in] instance - flash partition instance
+ * @param[in] cbfn - callback function
+ * @param[in] cbarg - callback argument
+ *
+ * Return status.
+ */
+bfa_status_t
+bfa_flash_erase_part(struct bfa_flash_s *flash, enum bfa_flash_part_type type,
+		u8 instance, bfa_cb_flash_t cbfn, void *cbarg)
+{
+	bfa_trc(flash, BFI_FLASH_H2I_ERASE_REQ);
+	bfa_trc(flash, type);
+	bfa_trc(flash, instance);
+
+	if (!bfa_ioc_is_operational(flash->ioc))
+		return BFA_STATUS_IOC_NON_OP;
+
+	if (flash->op_busy) {
+		bfa_trc(flash, flash->op_busy);
+		return BFA_STATUS_DEVBUSY;
+	}
+
+	flash->op_busy = 1;
+	flash->cbfn = cbfn;
+	flash->cbarg = cbarg;
+	flash->type = type;
+	flash->instance = instance;
+
+	bfa_flash_erase_send(flash);
+	return BFA_STATUS_OK;
+}
+
+/*
+ * Update flash partition.
+ *
+ * @param[in] flash - flash structure
+ * @param[in] type - flash partition type
+ * @param[in] instance - flash partition instance
+ * @param[in] buf - update data buffer
+ * @param[in] len - data buffer length
+ * @param[in] offset - offset relative to the partition starting address
+ * @param[in] cbfn - callback function
+ * @param[in] cbarg - callback argument
+ *
+ * Return status.
+ */
+bfa_status_t
+bfa_flash_update_part(struct bfa_flash_s *flash, enum bfa_flash_part_type type,
+		u8 instance, void *buf, u32 len, u32 offset,
+		bfa_cb_flash_t cbfn, void *cbarg)
+{
+	bfa_trc(flash, BFI_FLASH_H2I_WRITE_REQ);
+	bfa_trc(flash, type);
+	bfa_trc(flash, instance);
+	bfa_trc(flash, len);
+	bfa_trc(flash, offset);
+
+	if (!bfa_ioc_is_operational(flash->ioc))
+		return BFA_STATUS_IOC_NON_OP;
+
+	/*
+	 * 'len' must be in word (4-byte) boundary
+	 * 'offset' must be in sector (16kb) boundary
+	 */
+	if (!len || (len & 0x03) || (offset & 0x00003FFF))
+		return BFA_STATUS_FLASH_BAD_LEN;
+
+	if (type == BFA_FLASH_PART_MFG)
+		return BFA_STATUS_EINVAL;
+
+	if (flash->op_busy) {
+		bfa_trc(flash, flash->op_busy);
+		return BFA_STATUS_DEVBUSY;
+	}
+
+	flash->op_busy = 1;
+	flash->cbfn = cbfn;
+	flash->cbarg = cbarg;
+	flash->type = type;
+	flash->instance = instance;
+	flash->residue = len;
+	flash->offset = 0;
+	flash->addr_off = offset;
+	flash->ubuf = buf;
+
+	bfa_flash_write_send(flash);
+	return BFA_STATUS_OK;
+}
+
+/*
+ * Read flash partition.
+ *
+ * @param[in] flash - flash structure
+ * @param[in] type - flash partition type
+ * @param[in] instance - flash partition instance
+ * @param[in] buf - read data buffer
+ * @param[in] len - data buffer length
+ * @param[in] offset - offset relative to the partition starting address
+ * @param[in] cbfn - callback function
+ * @param[in] cbarg - callback argument
+ *
+ * Return status.
+ */
+bfa_status_t
+bfa_flash_read_part(struct bfa_flash_s *flash, enum bfa_flash_part_type type,
+		u8 instance, void *buf, u32 len, u32 offset,
+		bfa_cb_flash_t cbfn, void *cbarg)
+{
+	bfa_trc(flash, BFI_FLASH_H2I_READ_REQ);
+	bfa_trc(flash, type);
+	bfa_trc(flash, instance);
+	bfa_trc(flash, len);
+	bfa_trc(flash, offset);
+
+	if (!bfa_ioc_is_operational(flash->ioc))
+		return BFA_STATUS_IOC_NON_OP;
+
+	/*
+	 * 'len' must be in word (4-byte) boundary
+	 * 'offset' must be in sector (16kb) boundary
+	 */
+	if (!len || (len & 0x03) || (offset & 0x00003FFF))
+		return BFA_STATUS_FLASH_BAD_LEN;
+
+	if (flash->op_busy) {
+		bfa_trc(flash, flash->op_busy);
+		return BFA_STATUS_DEVBUSY;
+	}
+
+	flash->op_busy = 1;
+	flash->cbfn = cbfn;
+	flash->cbarg = cbarg;
+	flash->type = type;
+	flash->instance = instance;
+	flash->residue = len;
+	flash->offset = 0;
+	flash->addr_off = offset;
+	flash->ubuf = buf;
+	bfa_flash_read_send(flash);
+
+	return BFA_STATUS_OK;
+}
diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
index 1d51164..c302b99 100644
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -348,6 +348,28 @@ struct bfa_ioc_hwif_s {
 };
 
 /*
+ * Queue element to wait for room in request queue. FIFO order is
+ * maintained when fullfilling requests.
+ */
+struct bfa_reqq_wait_s {
+	struct list_head	qe;
+	void	(*qresume) (void *cbarg);
+	void	*cbarg;
+};
+
+typedef void	(*bfa_cb_cbfn_t) (void *cbarg, bfa_boolean_t complete);
+
+/*
+ * Generic BFA callback element.
+ */
+struct bfa_cb_qe_s {
+	struct list_head	qe;
+	bfa_cb_cbfn_t	cbfn;
+	bfa_boolean_t	once;
+	void		*cbarg;
+};
+
+/*
  * ASIC block configurtion related
  */
 
@@ -419,6 +441,56 @@ bfa_status_t	bfa_sfp_speed(struct bfa_sfp_s *sfp,
 			enum bfa_port_speed portspeed,
 			bfa_cb_sfp_t cbfn, void *cbarg);
 
+/*
+ *	Flash module specific
+ */
+typedef void	(*bfa_cb_flash_t) (void *cbarg, bfa_status_t status);
+
+struct bfa_flash_s {
+	struct bfa_ioc_s *ioc;		/* back pointer to ioc */
+	struct bfa_trc_mod_s *trcmod;
+	u32		type;           /* partition type */
+	u8		instance;       /* partition instance */
+	u8		rsv[3];
+	u32		op_busy;        /*  operation busy flag */
+	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_flash_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;       /*  partition address offset */
+	struct bfa_mbox_cmd_s	mb;       /*  mailbox */
+	struct bfa_ioc_notify_s	ioc_notify; /*  ioc event notify */
+	struct bfa_mem_dma_s	flash_dma;
+};
+
+#define BFA_FLASH(__bfa)		(&(__bfa)->modules.flash)
+#define BFA_MEM_FLASH_DMA(__bfa)	(&(BFA_FLASH(__bfa)->flash_dma))
+
+bfa_status_t bfa_flash_get_attr(struct bfa_flash_s *flash,
+			struct bfa_flash_attr_s *attr,
+			bfa_cb_flash_t cbfn, void *cbarg);
+bfa_status_t bfa_flash_erase_part(struct bfa_flash_s *flash,
+			enum bfa_flash_part_type type, u8 instance,
+			bfa_cb_flash_t cbfn, void *cbarg);
+bfa_status_t bfa_flash_update_part(struct bfa_flash_s *flash,
+			enum bfa_flash_part_type type, u8 instance,
+			void *buf, u32 len, u32 offset,
+			bfa_cb_flash_t cbfn, void *cbarg);
+bfa_status_t bfa_flash_read_part(struct bfa_flash_s *flash,
+			enum bfa_flash_part_type type, u8 instance, void *buf,
+			u32 len, u32 offset, bfa_cb_flash_t cbfn, void *cbarg);
+u32	bfa_flash_meminfo(bfa_boolean_t mincfg);
+void bfa_flash_attach(struct bfa_flash_s *flash, struct bfa_ioc_s *ioc,
+		void *dev, struct bfa_trc_mod_s *trcmod, bfa_boolean_t mincfg);
+void bfa_flash_memclaim(struct bfa_flash_s *flash,
+		u8 *dm_kva, u64 dm_pa, bfa_boolean_t mincfg);
+
 #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)
diff --git a/drivers/scsi/bfa/bfa_modules.h b/drivers/scsi/bfa/bfa_modules.h
index d8ea708..f7783f0 100644
--- a/drivers/scsi/bfa/bfa_modules.h
+++ b/drivers/scsi/bfa/bfa_modules.h
@@ -40,6 +40,7 @@ struct bfa_modules_s {
 	struct bfa_ablk_s	ablk;		/*  ASIC block config module */
 	struct bfa_cee_s	cee;		/*  CEE Module	*/
 	struct bfa_sfp_s	sfp;		/*  SFP module	*/
+	struct bfa_flash_s	flash;		/*  flash module */
 };
 
 /*
diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index e4409e5..5444661 100644
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -1109,6 +1109,111 @@ out:
 	return 0;
 }
 
+int
+bfad_iocmd_flash_get_attr(struct bfad_s *bfad, void *cmd)
+{
+	struct bfa_bsg_flash_attr_s *iocmd =
+			(struct bfa_bsg_flash_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_flash_get_attr(BFA_FLASH(&bfad->bfa), &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_flash_erase_part(struct bfad_s *bfad, void *cmd)
+{
+	struct bfa_bsg_flash_s *iocmd = (struct bfa_bsg_flash_s *)cmd;
+	struct bfad_hal_comp fcomp;
+	unsigned long	flags;
+
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_flash_erase_part(BFA_FLASH(&bfad->bfa), iocmd->type,
+				iocmd->instance, 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_flash_update_part(struct bfad_s *bfad, void *cmd,
+			unsigned int payload_len)
+{
+	struct bfa_bsg_flash_s *iocmd = (struct bfa_bsg_flash_s *)cmd;
+	void	*iocmd_bufptr;
+	struct bfad_hal_comp fcomp;
+	unsigned long	flags;
+
+	if (bfad_chk_iocmd_sz(payload_len,
+			sizeof(struct bfa_bsg_flash_s),
+			iocmd->bufsz) != BFA_STATUS_OK) {
+		iocmd->status = BFA_STATUS_VERSION_FAIL;
+		return 0;
+	}
+
+	iocmd_bufptr = (char *)iocmd + sizeof(struct bfa_bsg_flash_s);
+
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_flash_update_part(BFA_FLASH(&bfad->bfa),
+				iocmd->type, 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;
+}
+
+int
+bfad_iocmd_flash_read_part(struct bfad_s *bfad, void *cmd,
+			unsigned int payload_len)
+{
+	struct bfa_bsg_flash_s *iocmd = (struct bfa_bsg_flash_s *)cmd;
+	struct bfad_hal_comp fcomp;
+	void	*iocmd_bufptr;
+	unsigned long	flags;
+
+	if (bfad_chk_iocmd_sz(payload_len,
+			sizeof(struct bfa_bsg_flash_s),
+			iocmd->bufsz) != BFA_STATUS_OK) {
+		iocmd->status = BFA_STATUS_VERSION_FAIL;
+		return 0;
+	}
+
+	iocmd_bufptr = (char *)iocmd + sizeof(struct bfa_bsg_flash_s);
+
+	init_completion(&fcomp.comp);
+	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	iocmd->status = bfa_flash_read_part(BFA_FLASH(&bfad->bfa), iocmd->type,
+				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)
@@ -1243,6 +1348,18 @@ bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
 	case IOCMD_SFP_SPEED:
 		rc = bfad_iocmd_sfp_speed(bfad, iocmd);
 		break;
+	case IOCMD_FLASH_GET_ATTR:
+		rc = bfad_iocmd_flash_get_attr(bfad, iocmd);
+		break;
+	case IOCMD_FLASH_ERASE_PART:
+		rc = bfad_iocmd_flash_erase_part(bfad, iocmd);
+		break;
+	case IOCMD_FLASH_UPDATE_PART:
+		rc = bfad_iocmd_flash_update_part(bfad, iocmd, payload_len);
+		break;
+	case IOCMD_FLASH_READ_PART:
+		rc = bfad_iocmd_flash_read_part(bfad, iocmd, payload_len);
+		break;
 	default:
 		rc = EINVAL;
 		break;
diff --git a/drivers/scsi/bfa/bfad_bsg.h b/drivers/scsi/bfa/bfad_bsg.h
index faafd35..6bece6c 100644
--- a/drivers/scsi/bfa/bfad_bsg.h
+++ b/drivers/scsi/bfa/bfad_bsg.h
@@ -67,6 +67,10 @@ enum {
 	IOCMD_CEE_RESET_STATS,
 	IOCMD_SFP_MEDIA,
 	IOCMD_SFP_SPEED,
+	IOCMD_FLASH_GET_ATTR,
+	IOCMD_FLASH_ERASE_PART,
+	IOCMD_FLASH_UPDATE_PART,
+	IOCMD_FLASH_READ_PART,
 };
 
 struct bfa_bsg_gen_s {
@@ -336,6 +340,23 @@ struct bfa_bsg_sfp_speed_s {
 	enum bfa_port_speed speed;
 };
 
+struct bfa_bsg_flash_attr_s {
+	bfa_status_t	status;
+	u16		bfad_num;
+	u16		rsvd;
+	struct bfa_flash_attr_s attr;
+};
+
+struct bfa_bsg_flash_s {
+	bfa_status_t	status;
+	u16		bfad_num;
+	u8		instance;
+	u8		rsvd;
+	enum  bfa_flash_part_type type;
+	int		bufsz;
+	u64		buf_ptr;
+};
+
 struct bfa_bsg_fcpt_s {
 	bfa_status_t    status;
 	u16		vf_id;
diff --git a/drivers/scsi/bfa/bfi.h b/drivers/scsi/bfa/bfi.h
index 0d24998..b7eb3dc 100644
--- a/drivers/scsi/bfa/bfi.h
+++ b/drivers/scsi/bfa/bfi.h
@@ -190,6 +190,7 @@ enum bfi_pcifn_class {
  */
 enum bfi_mclass {
 	BFI_MC_IOC		= 1,	/*  IO Controller (IOC)	    */
+	BFI_MC_FLASH		= 3,	/*  Flash message class	*/
 	BFI_MC_CEE		= 4,	/*  CEE	*/
 	BFI_MC_FCPORT		= 5,	/*  FC port			    */
 	BFI_MC_IOCFC		= 6,	/*  FC - IO Controller (IOC)	    */
@@ -814,6 +815,114 @@ struct bfi_sfp_rsp_s {
 	u8			rsvd[2];
 };
 
+/*
+ *	FLASH module specific
+ */
+enum bfi_flash_h2i_msgs {
+	BFI_FLASH_H2I_QUERY_REQ = 1,
+	BFI_FLASH_H2I_ERASE_REQ = 2,
+	BFI_FLASH_H2I_WRITE_REQ = 3,
+	BFI_FLASH_H2I_READ_REQ = 4,
+	BFI_FLASH_H2I_BOOT_VER_REQ = 5,
+};
+
+enum bfi_flash_i2h_msgs {
+	BFI_FLASH_I2H_QUERY_RSP = BFA_I2HM(1),
+	BFI_FLASH_I2H_ERASE_RSP = BFA_I2HM(2),
+	BFI_FLASH_I2H_WRITE_RSP = BFA_I2HM(3),
+	BFI_FLASH_I2H_READ_RSP = BFA_I2HM(4),
+	BFI_FLASH_I2H_BOOT_VER_RSP = BFA_I2HM(5),
+	BFI_FLASH_I2H_EVENT = BFA_I2HM(127),
+};
+
+/*
+ * Flash query request
+ */
+struct bfi_flash_query_req_s {
+	struct bfi_mhdr_s mh;	/* Common msg header */
+	struct bfi_alen_s alen;
+};
+
+/*
+ * Flash erase request
+ */
+struct bfi_flash_erase_req_s {
+	struct bfi_mhdr_s	mh;	/* Common msg header */
+	u32	type;	/* partition type */
+	u8	instance; /* partition instance */
+	u8	rsv[3];
+};
+
+/*
+ * Flash write request
+ */
+struct bfi_flash_write_req_s {
+	struct bfi_mhdr_s mh;	/* Common msg header */
+	struct bfi_alen_s alen;
+	u32	type;	/* partition type */
+	u8	instance; /* partition instance */
+	u8	last;
+	u8	rsv[2];
+	u32	offset;
+	u32	length;
+};
+
+/*
+ * Flash read request
+ */
+struct bfi_flash_read_req_s {
+	struct bfi_mhdr_s mh;	/* Common msg header */
+	u32	type;		/* partition type */
+	u8	instance;	/* partition instance */
+	u8	rsv[3];
+	u32	offset;
+	u32	length;
+	struct bfi_alen_s alen;
+};
+
+/*
+ * Flash query response
+ */
+struct bfi_flash_query_rsp_s {
+	struct bfi_mhdr_s mh;	/* Common msg header */
+	u32	status;
+};
+
+/*
+ * Flash read response
+ */
+struct bfi_flash_read_rsp_s {
+	struct bfi_mhdr_s mh;	/* Common msg header */
+	u32	type;       /* partition type */
+	u8	instance;   /* partition instance */
+	u8	rsv[3];
+	u32	status;
+	u32	length;
+};
+
+/*
+ * Flash write response
+ */
+struct bfi_flash_write_rsp_s {
+	struct bfi_mhdr_s mh;	/* Common msg header */
+	u32	type;       /* partition type */
+	u8	instance;   /* partition instance */
+	u8	rsv[3];
+	u32	status;
+	u32	length;
+};
+
+/*
+ * Flash erase response
+ */
+struct bfi_flash_erase_rsp_s {
+	struct bfi_mhdr_s mh;	/* Common msg header */
+	u32	type;		/* partition type */
+	u8	instance;	/* partition instance */
+	u8	rsv[3];
+	u32	status;
+};
+
 #pragma pack()
 
 #endif /* __BFI_H__ */