[SCSI] bfa: DMA memory allocation enhancement.

- Modified the design such that each BFA sub-module will provide
  the amount of DMA and KVA memory needed by it and queues the
  same request to the global dma and kva info queues.
- During the memory allocation we iterate over this queue to allocate
  the dma and kva memory requested by sub-modules.
- The change is needed to avoid requesting the aggregate amount of memory
  needed by all the BFA sub-modules as one contiguous chunk.

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

13 files changed, 624 insertions, 569 deletions

diff --git a/drivers/scsi/bfa/bfa.h b/drivers/scsi/bfa/bfa.h
index ee072d9..67742dc 100644
--- a/drivers/scsi/bfa/bfa.h
+++ b/drivers/scsi/bfa/bfa.h
@@ -172,34 +172,6 @@ struct bfa_pciid_s {
 
 extern char     bfa_version[];
 
-/*
- * BFA memory resources
- */
-enum bfa_mem_type {
-	BFA_MEM_TYPE_KVA = 1,	/*  Kernel Virtual Memory *(non-dma-able) */
-	BFA_MEM_TYPE_DMA = 2,	/*  DMA-able memory */
-	BFA_MEM_TYPE_MAX = BFA_MEM_TYPE_DMA,
-};
-
-struct bfa_mem_elem_s {
-	enum bfa_mem_type mem_type;	/* see enum bfa_mem_type */
-	u32	mem_len;	/*  Total Length in Bytes	*/
-	u8		*kva;		/*  kernel virtual address	*/
-	u64	dma;		/*  dma address if DMA memory	*/
-	u8		*kva_curp;	/*  kva allocation cursor	*/
-	u64	dma_curp;	/*  dma allocation cursor	*/
-};
-
-struct bfa_meminfo_s {
-	struct bfa_mem_elem_s meminfo[BFA_MEM_TYPE_MAX];
-};
-#define bfa_meminfo_kva(_m)				\
-	((_m)->meminfo[BFA_MEM_TYPE_KVA - 1].kva_curp)
-#define bfa_meminfo_dma_virt(_m)			\
-	((_m)->meminfo[BFA_MEM_TYPE_DMA - 1].kva_curp)
-#define bfa_meminfo_dma_phys(_m)			\
-	((_m)->meminfo[BFA_MEM_TYPE_DMA - 1].dma_curp)
-
 struct bfa_iocfc_regs_s {
 	void __iomem	*intr_status;
 	void __iomem	*intr_mask;
@@ -294,8 +266,19 @@ struct bfa_iocfc_s {
 	void			*updateq_cbarg;	/*  bios callback arg */
 	u32	intr_mask;
 	struct bfa_faa_args_s	faa_args;
+	struct bfa_mem_dma_s	ioc_dma;
+	struct bfa_mem_dma_s	iocfc_dma;
+	struct bfa_mem_dma_s	reqq_dma[BFI_IOC_MAX_CQS];
+	struct bfa_mem_dma_s	rspq_dma[BFI_IOC_MAX_CQS];
+	struct bfa_mem_kva_s	kva_seg;
 };
 
+#define BFA_MEM_IOC_DMA(_bfa)		(&((_bfa)->iocfc.ioc_dma))
+#define BFA_MEM_IOCFC_DMA(_bfa)		(&((_bfa)->iocfc.iocfc_dma))
+#define BFA_MEM_REQQ_DMA(_bfa, _qno)	(&((_bfa)->iocfc.reqq_dma[(_qno)]))
+#define BFA_MEM_RSPQ_DMA(_bfa, _qno)	(&((_bfa)->iocfc.rspq_dma[(_qno)]))
+#define BFA_MEM_IOCFC_KVA(_bfa)		(&((_bfa)->iocfc.kva_seg))
+
 #define bfa_fn_lpu(__bfa)	\
 	bfi_fn_lpu(bfa_ioc_pcifn(&(__bfa)->ioc), bfa_ioc_portid(&(__bfa)->ioc))
 #define bfa_msix_init(__bfa, __nvecs)					\
@@ -329,17 +312,17 @@ struct bfa_iocfc_s {
 /*
  * FC specific IOC functions.
  */
-void bfa_iocfc_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
-		       u32 *dm_len);
+void bfa_iocfc_meminfo(struct bfa_iocfc_cfg_s *cfg,
+			struct bfa_meminfo_s *meminfo,
+			struct bfa_s *bfa);
 void bfa_iocfc_attach(struct bfa_s *bfa, void *bfad,
 		      struct bfa_iocfc_cfg_s *cfg,
-		      struct bfa_meminfo_s *meminfo,
 		      struct bfa_pcidev_s *pcidev);
 void bfa_iocfc_init(struct bfa_s *bfa);
 void bfa_iocfc_start(struct bfa_s *bfa);
 void bfa_iocfc_stop(struct bfa_s *bfa);
 void bfa_iocfc_isr(void *bfa, struct bfi_mbmsg_s *msg);
-void bfa_iocfc_set_snsbase(struct bfa_s *bfa, u64 snsbase_pa);
+void bfa_iocfc_set_snsbase(struct bfa_s *bfa, int seg_no, u64 snsbase_pa);
 bfa_boolean_t bfa_iocfc_is_operational(struct bfa_s *bfa);
 void bfa_iocfc_reset_queues(struct bfa_s *bfa);
 
@@ -418,7 +401,8 @@ void bfa_get_pciids(struct bfa_pciid_s **pciids, int *npciids);
 void bfa_cfg_get_default(struct bfa_iocfc_cfg_s *cfg);
 void bfa_cfg_get_min(struct bfa_iocfc_cfg_s *cfg);
 void bfa_cfg_get_meminfo(struct bfa_iocfc_cfg_s *cfg,
-			 struct bfa_meminfo_s *meminfo);
+			struct bfa_meminfo_s *meminfo,
+			struct bfa_s *bfa);
 void bfa_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 		struct bfa_meminfo_s *meminfo,
 		struct bfa_pcidev_s *pcidev);
diff --git a/drivers/scsi/bfa/bfa_core.c b/drivers/scsi/bfa/bfa_core.c
index 0048fc8..602dc35 100644
--- a/drivers/scsi/bfa/bfa_core.c
+++ b/drivers/scsi/bfa/bfa_core.c
@@ -89,46 +89,26 @@ static bfa_ioc_mbox_mcfunc_t  bfa_mbox_isrs[BFI_MC_MAX] = {
 
 
 static void
-bfa_com_port_attach(struct bfa_s *bfa, struct bfa_meminfo_s *mi)
+bfa_com_port_attach(struct bfa_s *bfa)
 {
 	struct bfa_port_s	*port = &bfa->modules.port;
-	u32			dm_len;
-	u8			*dm_kva;
-	u64			dm_pa;
+	struct bfa_mem_dma_s	*port_dma = BFA_MEM_PORT_DMA(bfa);
 
-	dm_len = bfa_port_meminfo();
-	dm_kva = bfa_meminfo_dma_virt(mi);
-	dm_pa  = bfa_meminfo_dma_phys(mi);
-
-	memset(port, 0, sizeof(struct bfa_port_s));
 	bfa_port_attach(port, &bfa->ioc, bfa, bfa->trcmod);
-	bfa_port_mem_claim(port, dm_kva, dm_pa);
-
-	bfa_meminfo_dma_virt(mi) = dm_kva + dm_len;
-	bfa_meminfo_dma_phys(mi) = dm_pa + dm_len;
+	bfa_port_mem_claim(port, port_dma->kva_curp, port_dma->dma_curp);
 }
 
 /*
  * ablk module attach
  */
 static void
-bfa_com_ablk_attach(struct bfa_s *bfa, struct bfa_meminfo_s *mi)
+bfa_com_ablk_attach(struct bfa_s *bfa)
 {
 	struct bfa_ablk_s	*ablk = &bfa->modules.ablk;
-	u32			dm_len;
-	u8			*dm_kva;
-	u64			dm_pa;
+	struct bfa_mem_dma_s	*ablk_dma = BFA_MEM_ABLK_DMA(bfa);
 
-	dm_len = bfa_ablk_meminfo();
-	dm_kva = bfa_meminfo_dma_virt(mi);
-	dm_pa  = bfa_meminfo_dma_phys(mi);
-
-	memset(ablk, 0, sizeof(struct bfa_ablk_s));
 	bfa_ablk_attach(ablk, &bfa->ioc);
-	bfa_ablk_memclaim(ablk, dm_kva, dm_pa);
-
-	bfa_meminfo_dma_virt(mi) = dm_kva + dm_len;
-	bfa_meminfo_dma_phys(mi) = dm_pa + dm_len;
+	bfa_ablk_memclaim(ablk, ablk_dma->kva_curp, ablk_dma->dma_curp);
 }
 
 /*
@@ -444,41 +424,6 @@ bfa_msix_lpu_err(struct bfa_s *bfa, int vec)
  *  BFA IOC private functions
  */
 
-static void
-bfa_iocfc_cqs_sz(struct bfa_iocfc_cfg_s *cfg, u32 *dm_len)
-{
-	int		i, per_reqq_sz, per_rspq_sz;
-
-	per_reqq_sz = BFA_ROUNDUP((cfg->drvcfg.num_reqq_elems * BFI_LMSG_SZ),
-				  BFA_DMA_ALIGN_SZ);
-	per_rspq_sz = BFA_ROUNDUP((cfg->drvcfg.num_rspq_elems * BFI_LMSG_SZ),
-				  BFA_DMA_ALIGN_SZ);
-
-	/*
-	 * Calculate CQ size
-	 */
-	for (i = 0; i < cfg->fwcfg.num_cqs; i++) {
-		*dm_len = *dm_len + per_reqq_sz;
-		*dm_len = *dm_len + per_rspq_sz;
-	}
-
-	/*
-	 * Calculate Shadow CI/PI size
-	 */
-	for (i = 0; i < cfg->fwcfg.num_cqs; i++)
-		*dm_len += (2 * BFA_CACHELINE_SZ);
-}
-
-static void
-bfa_iocfc_fw_cfg_sz(struct bfa_iocfc_cfg_s *cfg, u32 *dm_len)
-{
-	*dm_len +=
-		BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfg_s), BFA_CACHELINE_SZ);
-	*dm_len +=
-		BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfgrsp_s),
-			    BFA_CACHELINE_SZ);
-}
-
 /*
  * Use the Mailbox interface to send BFI_IOCFC_H2I_CFG_REQ
  */
@@ -604,48 +549,42 @@ bfa_iocfc_init_mem(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 }
 
 static void
-bfa_iocfc_mem_claim(struct bfa_s *bfa, struct bfa_iocfc_cfg_s *cfg,
-		    struct bfa_meminfo_s *meminfo)
+bfa_iocfc_mem_claim(struct bfa_s *bfa, struct bfa_iocfc_cfg_s *cfg)
 {
-	u8	       *dm_kva;
-	u64	dm_pa;
-	int		i, per_reqq_sz, per_rspq_sz;
+	u8	*dm_kva = NULL;
+	u64	dm_pa = 0;
+	int	i, per_reqq_sz, per_rspq_sz, dbgsz;
 	struct bfa_iocfc_s  *iocfc = &bfa->iocfc;
-	int		dbgsz;
+	struct bfa_mem_dma_s *ioc_dma = BFA_MEM_IOC_DMA(bfa);
+	struct bfa_mem_dma_s *iocfc_dma = BFA_MEM_IOCFC_DMA(bfa);
+	struct bfa_mem_dma_s *reqq_dma, *rspq_dma;
 
-	dm_kva = bfa_meminfo_dma_virt(meminfo);
-	dm_pa = bfa_meminfo_dma_phys(meminfo);
+	/* First allocate dma memory for IOC */
+	bfa_ioc_mem_claim(&bfa->ioc, bfa_mem_dma_virt(ioc_dma),
+			bfa_mem_dma_phys(ioc_dma));
 
-	/*
-	 * First allocate dma memory for IOC.
-	 */
-	bfa_ioc_mem_claim(&bfa->ioc, dm_kva, dm_pa);
-	dm_kva += BFA_ROUNDUP(sizeof(struct bfi_ioc_attr_s), BFA_DMA_ALIGN_SZ);
-	dm_pa  += BFA_ROUNDUP(sizeof(struct bfi_ioc_attr_s), BFA_DMA_ALIGN_SZ);
-
-	/*
-	 * Claim DMA-able memory for the request/response queues and for shadow
-	 * ci/pi registers
-	 */
+	/* Claim DMA-able memory for the request/response queues */
 	per_reqq_sz = BFA_ROUNDUP((cfg->drvcfg.num_reqq_elems * BFI_LMSG_SZ),
-				  BFA_DMA_ALIGN_SZ);
+				BFA_DMA_ALIGN_SZ);
 	per_rspq_sz = BFA_ROUNDUP((cfg->drvcfg.num_rspq_elems * BFI_LMSG_SZ),
-				  BFA_DMA_ALIGN_SZ);
+				BFA_DMA_ALIGN_SZ);
 
 	for (i = 0; i < cfg->fwcfg.num_cqs; i++) {
-		iocfc->req_cq_ba[i].kva = dm_kva;
-		iocfc->req_cq_ba[i].pa = dm_pa;
-		memset(dm_kva, 0, per_reqq_sz);
-		dm_kva += per_reqq_sz;
-		dm_pa += per_reqq_sz;
-
-		iocfc->rsp_cq_ba[i].kva = dm_kva;
-		iocfc->rsp_cq_ba[i].pa = dm_pa;
-		memset(dm_kva, 0, per_rspq_sz);
-		dm_kva += per_rspq_sz;
-		dm_pa += per_rspq_sz;
+		reqq_dma = BFA_MEM_REQQ_DMA(bfa, i);
+		iocfc->req_cq_ba[i].kva = bfa_mem_dma_virt(reqq_dma);
+		iocfc->req_cq_ba[i].pa = bfa_mem_dma_phys(reqq_dma);
+		memset(iocfc->req_cq_ba[i].kva, 0, per_reqq_sz);
+
+		rspq_dma = BFA_MEM_RSPQ_DMA(bfa, i);
+		iocfc->rsp_cq_ba[i].kva = bfa_mem_dma_virt(rspq_dma);
+		iocfc->rsp_cq_ba[i].pa = bfa_mem_dma_phys(rspq_dma);
+		memset(iocfc->rsp_cq_ba[i].kva, 0, per_rspq_sz);
 	}
 
+	/* Claim IOCFC dma memory - for shadow CI/PI */
+	dm_kva = bfa_mem_dma_virt(iocfc_dma);
+	dm_pa  = bfa_mem_dma_phys(iocfc_dma);
+
 	for (i = 0; i < cfg->fwcfg.num_cqs; i++) {
 		iocfc->req_cq_shadow_ci[i].kva = dm_kva;
 		iocfc->req_cq_shadow_ci[i].pa = dm_pa;
@@ -658,36 +597,27 @@ bfa_iocfc_mem_claim(struct bfa_s *bfa, struct bfa_iocfc_cfg_s *cfg,
 		dm_pa += BFA_CACHELINE_SZ;
 	}
 
-	/*
-	 * Claim DMA-able memory for the config info page
-	 */
+	/* Claim IOCFC dma memory - for the config info page */
 	bfa->iocfc.cfg_info.kva = dm_kva;
 	bfa->iocfc.cfg_info.pa = dm_pa;
 	bfa->iocfc.cfginfo = (struct bfi_iocfc_cfg_s *) dm_kva;
 	dm_kva += BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfg_s), BFA_CACHELINE_SZ);
 	dm_pa += BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfg_s), BFA_CACHELINE_SZ);
 
-	/*
-	 * Claim DMA-able memory for the config response
-	 */
+	/* Claim IOCFC dma memory - for the config response */
 	bfa->iocfc.cfgrsp_dma.kva = dm_kva;
 	bfa->iocfc.cfgrsp_dma.pa = dm_pa;
 	bfa->iocfc.cfgrsp = (struct bfi_iocfc_cfgrsp_s *) dm_kva;
-
-	dm_kva +=
-		BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfgrsp_s),
-			    BFA_CACHELINE_SZ);
+	dm_kva += BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfgrsp_s),
+			BFA_CACHELINE_SZ);
 	dm_pa += BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfgrsp_s),
-			     BFA_CACHELINE_SZ);
-
-
-	bfa_meminfo_dma_virt(meminfo) = dm_kva;
-	bfa_meminfo_dma_phys(meminfo) = dm_pa;
+			BFA_CACHELINE_SZ);
 
+	/* Claim IOCFC kva memory */
 	dbgsz = (bfa_auto_recover) ? BFA_DBG_FWTRC_LEN : 0;
 	if (dbgsz > 0) {
-		bfa_ioc_debug_memclaim(&bfa->ioc, bfa_meminfo_kva(meminfo));
-		bfa_meminfo_kva(meminfo) += dbgsz;
+		bfa_ioc_debug_memclaim(&bfa->ioc, bfa_mem_kva_curp(iocfc));
+		bfa_mem_kva_curp(iocfc) += dbgsz;
 	}
 }
 
@@ -1102,15 +1032,47 @@ bfa_iocfc_reset_cbfn(void *bfa_arg)
  * Query IOC memory requirement information.
  */
 void
-bfa_iocfc_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
-		  u32 *dm_len)
+bfa_iocfc_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
+		  struct bfa_s *bfa)
 {
-	/* dma memory for IOC */
-	*dm_len += BFA_ROUNDUP(sizeof(struct bfi_ioc_attr_s), BFA_DMA_ALIGN_SZ);
+	int q, per_reqq_sz, per_rspq_sz;
+	struct bfa_mem_dma_s *ioc_dma = BFA_MEM_IOC_DMA(bfa);
+	struct bfa_mem_dma_s *iocfc_dma = BFA_MEM_IOCFC_DMA(bfa);
+	struct bfa_mem_kva_s *iocfc_kva = BFA_MEM_IOCFC_KVA(bfa);
+	u32	dm_len = 0;
+
+	/* dma memory setup for IOC */
+	bfa_mem_dma_setup(meminfo, ioc_dma,
+		BFA_ROUNDUP(sizeof(struct bfi_ioc_attr_s), BFA_DMA_ALIGN_SZ));
+
+	/* dma memory setup for REQ/RSP queues */
+	per_reqq_sz = BFA_ROUNDUP((cfg->drvcfg.num_reqq_elems * BFI_LMSG_SZ),
+				BFA_DMA_ALIGN_SZ);
+	per_rspq_sz = BFA_ROUNDUP((cfg->drvcfg.num_rspq_elems * BFI_LMSG_SZ),
+				BFA_DMA_ALIGN_SZ);
+
+	for (q = 0; q < cfg->fwcfg.num_cqs; q++) {
+		bfa_mem_dma_setup(meminfo, BFA_MEM_REQQ_DMA(bfa, q),
+				per_reqq_sz);
+		bfa_mem_dma_setup(meminfo, BFA_MEM_RSPQ_DMA(bfa, q),
+				per_rspq_sz);
+	}
 
-	bfa_iocfc_fw_cfg_sz(cfg, dm_len);
-	bfa_iocfc_cqs_sz(cfg, dm_len);
-	*km_len += (bfa_auto_recover) ? BFA_DBG_FWTRC_LEN : 0;
+	/* IOCFC dma memory - calculate Shadow CI/PI size */
+	for (q = 0; q < cfg->fwcfg.num_cqs; q++)
+		dm_len += (2 * BFA_CACHELINE_SZ);
+
+	/* IOCFC dma memory - calculate config info / rsp size */
+	dm_len += BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfg_s), BFA_CACHELINE_SZ);
+	dm_len += BFA_ROUNDUP(sizeof(struct bfi_iocfc_cfgrsp_s),
+			BFA_CACHELINE_SZ);
+
+	/* dma memory setup for IOCFC */
+	bfa_mem_dma_setup(meminfo, iocfc_dma, dm_len);
+
+	/* kva memory setup for IOCFC */
+	bfa_mem_kva_setup(meminfo, iocfc_kva,
+			((bfa_auto_recover) ? BFA_DBG_FWTRC_LEN : 0));
 }
 
 /*
@@ -1118,7 +1080,7 @@ bfa_iocfc_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
  */
 void
 bfa_iocfc_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
-		 struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
+		 struct bfa_pcidev_s *pcidev)
 {
 	int		i;
 	struct bfa_ioc_s *ioc = &bfa->ioc;
@@ -1135,7 +1097,7 @@ bfa_iocfc_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 	bfa_ioc_mbox_register(&bfa->ioc, bfa_mbox_isrs);
 
 	bfa_iocfc_init_mem(bfa, bfad, cfg, pcidev);
-	bfa_iocfc_mem_claim(bfa, cfg, meminfo);
+	bfa_iocfc_mem_claim(bfa, cfg);
 	INIT_LIST_HEAD(&bfa->timer_mod.timer_q);
 
 	INIT_LIST_HEAD(&bfa->comp_q);
@@ -1259,12 +1221,12 @@ bfa_iocfc_israttr_set(struct bfa_s *bfa, struct bfa_iocfc_intr_attr_s *attr)
 }
 
 void
-bfa_iocfc_set_snsbase(struct bfa_s *bfa, u64 snsbase_pa)
+bfa_iocfc_set_snsbase(struct bfa_s *bfa, int seg_no, u64 snsbase_pa)
 {
 	struct bfa_iocfc_s	*iocfc = &bfa->iocfc;
 
 	iocfc->cfginfo->sense_buf_len = (BFI_IOIM_SNSLEN - 1);
-	bfa_dma_be_addr_set(iocfc->cfginfo->ioim_snsbase, snsbase_pa);
+	bfa_dma_be_addr_set(iocfc->cfginfo->ioim_snsbase[seg_no], snsbase_pa);
 }
 /*
  * Enable IOC after it is disabled.
@@ -1353,34 +1315,37 @@ bfa_iocfc_get_pbc_vports(struct bfa_s *bfa, struct bfi_pbc_vport_s *pbc_vport)
  *			starting address for each block and provide the same
  *			structure as input parameter to bfa_attach() call.
  *
+ * @param[in] bfa -	pointer to the bfa structure, used while fetching the
+ *			dma, kva memory information of the bfa sub-modules.
+ *
  * @return void
  *
  * Special Considerations: @note
  */
 void
-bfa_cfg_get_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo)
+bfa_cfg_get_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
+		struct bfa_s *bfa)
 {
 	int		i;
-	u32	km_len = 0, dm_len = 0;
+	struct bfa_mem_dma_s *port_dma = BFA_MEM_PORT_DMA(bfa);
+	struct bfa_mem_dma_s *ablk_dma = BFA_MEM_ABLK_DMA(bfa);
 
 	WARN_ON((cfg == NULL) || (meminfo == NULL));
 
 	memset((void *)meminfo, 0, sizeof(struct bfa_meminfo_s));
-	meminfo->meminfo[BFA_MEM_TYPE_KVA - 1].mem_type =
-		BFA_MEM_TYPE_KVA;
-	meminfo->meminfo[BFA_MEM_TYPE_DMA - 1].mem_type =
-		BFA_MEM_TYPE_DMA;
 
-	bfa_iocfc_meminfo(cfg, &km_len, &dm_len);
+	/* Initialize the DMA & KVA meminfo queues */
+	INIT_LIST_HEAD(&meminfo->dma_info.qe);
+	INIT_LIST_HEAD(&meminfo->kva_info.qe);
 
-	for (i = 0; hal_mods[i]; i++)
-		hal_mods[i]->meminfo(cfg, &km_len, &dm_len);
+	bfa_iocfc_meminfo(cfg, meminfo, bfa);
 
-	dm_len += bfa_port_meminfo();
-	dm_len += bfa_ablk_meminfo();
+	for (i = 0; hal_mods[i]; i++)
+		hal_mods[i]->meminfo(cfg, meminfo, bfa);
 
-	meminfo->meminfo[BFA_MEM_TYPE_KVA - 1].mem_len = km_len;
-	meminfo->meminfo[BFA_MEM_TYPE_DMA - 1].mem_len = dm_len;
+	/* dma info setup */
+	bfa_mem_dma_setup(meminfo, port_dma, bfa_port_meminfo());
+	bfa_mem_dma_setup(meminfo, ablk_dma, bfa_ablk_meminfo());
 }
 
 /*
@@ -1413,29 +1378,41 @@ void
 bfa_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 	       struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
 {
-	int			i;
-	struct bfa_mem_elem_s	*melem;
+	int	i;
+	struct bfa_mem_dma_s *dma_info, *dma_elem;
+	struct bfa_mem_kva_s *kva_info, *kva_elem;
+	struct list_head *dm_qe, *km_qe;
 
 	bfa->fcs = BFA_FALSE;
 
 	WARN_ON((cfg == NULL) || (meminfo == NULL));
 
-	/*
-	 * initialize all memory pointers for iterative allocation
-	 */
-	for (i = 0; i < BFA_MEM_TYPE_MAX; i++) {
-		melem = meminfo->meminfo + i;
-		melem->kva_curp = melem->kva;
-		melem->dma_curp = melem->dma;
+	/* Initialize memory pointers for iterative allocation */
+	dma_info = &meminfo->dma_info;
+	dma_info->kva_curp = dma_info->kva;
+	dma_info->dma_curp = dma_info->dma;
+
+	kva_info = &meminfo->kva_info;
+	kva_info->kva_curp = kva_info->kva;
+
+	list_for_each(dm_qe, &dma_info->qe) {
+		dma_elem = (struct bfa_mem_dma_s *) dm_qe;
+		dma_elem->kva_curp = dma_elem->kva;
+		dma_elem->dma_curp = dma_elem->dma;
+	}
+
+	list_for_each(km_qe, &kva_info->qe) {
+		kva_elem = (struct bfa_mem_kva_s *) km_qe;
+		kva_elem->kva_curp = kva_elem->kva;
 	}
 
-	bfa_iocfc_attach(bfa, bfad, cfg, meminfo, pcidev);
+	bfa_iocfc_attach(bfa, bfad, cfg, pcidev);
 
 	for (i = 0; hal_mods[i]; i++)
-		hal_mods[i]->attach(bfa, bfad, cfg, meminfo, pcidev);
+		hal_mods[i]->attach(bfa, bfad, cfg, pcidev);
 
-	bfa_com_port_attach(bfa, meminfo);
-	bfa_com_ablk_attach(bfa, meminfo);
+	bfa_com_port_attach(bfa);
+	bfa_com_ablk_attach(bfa);
 }
 
 /*
diff --git a/drivers/scsi/bfa/bfa_fcpim.c b/drivers/scsi/bfa/bfa_fcpim.c
index eb14fd6..27eab36 100644
--- a/drivers/scsi/bfa/bfa_fcpim.c
+++ b/drivers/scsi/bfa/bfa_fcpim.c
@@ -286,10 +286,9 @@ static void     bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim,
  * Compute and return memory needed by FCP(im) module.
  */
 static void
-bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
-		u32 *dm_len)
+bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len)
 {
-	bfa_itnim_meminfo(cfg, km_len, dm_len);
+	bfa_itnim_meminfo(cfg, km_len);
 
 	/*
 	 * IO memory
@@ -308,8 +307,7 @@ bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
 
 static void
 bfa_fcpim_attach(struct bfa_fcp_mod_s *fcp, void *bfad,
-		struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *meminfo,
-		struct bfa_pcidev_s *pcidev)
+		struct bfa_iocfc_cfg_s *cfg, struct bfa_pcidev_s *pcidev)
 {
 	struct bfa_fcpim_s *fcpim = &fcp->fcpim;
 	struct bfa_s *bfa = fcp->bfa;
@@ -328,9 +326,9 @@ bfa_fcpim_attach(struct bfa_fcp_mod_s *fcp, void *bfad,
 	fcpim->profile_comp = NULL;
 	fcpim->profile_start = NULL;
 
-	bfa_itnim_attach(fcpim, meminfo);
-	bfa_tskim_attach(fcpim, meminfo);
-	bfa_ioim_attach(fcpim, meminfo);
+	bfa_itnim_attach(fcpim);
+	bfa_tskim_attach(fcpim);
+	bfa_ioim_attach(fcpim);
 }
 
 static void
@@ -972,8 +970,7 @@ bfa_itnim_tskdone(struct bfa_itnim_s *itnim)
 }
 
 void
-bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
-		u32 *dm_len)
+bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len)
 {
 	/*
 	 * ITN memory
@@ -982,15 +979,16 @@ bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
 }
 
 void
-bfa_itnim_attach(struct bfa_fcpim_s *fcpim, struct bfa_meminfo_s *minfo)
+bfa_itnim_attach(struct bfa_fcpim_s *fcpim)
 {
 	struct bfa_s	*bfa = fcpim->bfa;
+	struct bfa_fcp_mod_s	*fcp = fcpim->fcp;
 	struct bfa_itnim_s *itnim;
 	int	i, j;
 
 	INIT_LIST_HEAD(&fcpim->itnim_q);
 
-	itnim = (struct bfa_itnim_s *) bfa_meminfo_kva(minfo);
+	itnim = (struct bfa_itnim_s *) bfa_mem_kva_curp(fcp);
 	fcpim->itnim_arr = itnim;
 
 	for (i = 0; i < fcpim->num_itnims; i++, itnim++) {
@@ -1012,7 +1010,7 @@ bfa_itnim_attach(struct bfa_fcpim_s *fcpim, struct bfa_meminfo_s *minfo)
 		bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
 	}
 
-	bfa_meminfo_kva(minfo) = (u8 *) itnim;
+	bfa_mem_kva_curp(fcp) = (u8 *) itnim;
 }
 
 void
@@ -2345,22 +2343,23 @@ bfa_ioim_delayed_comp(struct bfa_ioim_s *ioim, bfa_boolean_t iotov)
  * Memory allocation and initialization.
  */
 void
-bfa_ioim_attach(struct bfa_fcpim_s *fcpim, struct bfa_meminfo_s *minfo)
+bfa_ioim_attach(struct bfa_fcpim_s *fcpim)
 {
 	struct bfa_ioim_s		*ioim;
+	struct bfa_fcp_mod_s	*fcp = fcpim->fcp;
 	struct bfa_ioim_sp_s	*iosp;
 	u16		i;
 
 	/*
 	 * claim memory first
 	 */
-	ioim = (struct bfa_ioim_s *) bfa_meminfo_kva(minfo);
+	ioim = (struct bfa_ioim_s *) bfa_mem_kva_curp(fcp);
 	fcpim->ioim_arr = ioim;
-	bfa_meminfo_kva(minfo) = (u8 *) (ioim + fcpim->fcp->num_ioim_reqs);
+	bfa_mem_kva_curp(fcp) = (u8 *) (ioim + fcpim->fcp->num_ioim_reqs);
 
-	iosp = (struct bfa_ioim_sp_s *) bfa_meminfo_kva(minfo);
+	iosp = (struct bfa_ioim_sp_s *) bfa_mem_kva_curp(fcp);
 	fcpim->ioim_sp_arr = iosp;
-	bfa_meminfo_kva(minfo) = (u8 *) (iosp + fcpim->fcp->num_ioim_reqs);
+	bfa_mem_kva_curp(fcp) = (u8 *) (iosp + fcpim->fcp->num_ioim_reqs);
 
 	/*
 	 * Initialize ioim free queues
@@ -3109,15 +3108,16 @@ bfa_tskim_cleanup(struct bfa_tskim_s *tskim)
  * Memory allocation and initialization.
  */
 void
-bfa_tskim_attach(struct bfa_fcpim_s *fcpim, struct bfa_meminfo_s *minfo)
+bfa_tskim_attach(struct bfa_fcpim_s *fcpim)
 {
 	struct bfa_tskim_s *tskim;
+	struct bfa_fcp_mod_s	*fcp = fcpim->fcp;
 	u16	i;
 
 	INIT_LIST_HEAD(&fcpim->tskim_free_q);
 	INIT_LIST_HEAD(&fcpim->tskim_unused_q);
 
-	tskim = (struct bfa_tskim_s *) bfa_meminfo_kva(minfo);
+	tskim = (struct bfa_tskim_s *) bfa_mem_kva_curp(fcp);
 	fcpim->tskim_arr = tskim;
 
 	for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) {
@@ -3136,7 +3136,7 @@ bfa_tskim_attach(struct bfa_fcpim_s *fcpim, struct bfa_meminfo_s *minfo)
 		list_add_tail(&tskim->qe, &fcpim->tskim_free_q);
 	}
 
-	bfa_meminfo_kva(minfo) = (u8 *) tskim;
+	bfa_mem_kva_curp(fcp) = (u8 *) tskim;
 }
 
 void
@@ -3233,9 +3233,14 @@ bfa_tskim_res_recfg(struct bfa_s *bfa, u16 num_tskim_fw)
 BFA_MODULE(fcp);
 
 static void
-bfa_fcp_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len, u32 *dm_len)
+bfa_fcp_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
+		struct bfa_s *bfa)
 {
-	u16	num_io_req;
+	struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
+	struct bfa_mem_kva_s *fcp_kva = BFA_MEM_FCP_KVA(bfa);
+	struct bfa_mem_dma_s *seg_ptr;
+	u16	nsegs, idx, per_seg_ios, num_io_req;
+	u32	km_len = 0;
 
 	/*
 	 * ZERO for num_ioim_reqs and num_fwtio_reqs is allowed config value.
@@ -3261,43 +3266,69 @@ bfa_fcp_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len, u32 *dm_len)
 			cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX;
 	}
 
-	bfa_fcpim_meminfo(cfg, km_len, dm_len);
+	bfa_fcpim_meminfo(cfg, &km_len);
 
 	num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
-	*km_len += num_io_req * sizeof(struct bfa_iotag_s);
-	*km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itn_s);
-	*dm_len += num_io_req * BFI_IOIM_SNSLEN;
+	km_len += num_io_req * sizeof(struct bfa_iotag_s);
+	km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itn_s);
+
+	/* dma memory */
+	nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN);
+	per_seg_ios = BFI_MEM_NREQS_SEG(BFI_IOIM_SNSLEN);
+
+	bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) {
+		if (num_io_req >= per_seg_ios) {
+			num_io_req -= per_seg_ios;
+			bfa_mem_dma_setup(minfo, seg_ptr,
+				per_seg_ios * BFI_IOIM_SNSLEN);
+		} else
+			bfa_mem_dma_setup(minfo, seg_ptr,
+				num_io_req * BFI_IOIM_SNSLEN);
+	}
+
+	/* kva memory */
+	bfa_mem_kva_setup(minfo, fcp_kva, km_len);
 }
 
 static void
 bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
-		struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
+		struct bfa_pcidev_s *pcidev)
 {
 	struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
-	u32	snsbufsz;
+	struct bfa_mem_dma_s *seg_ptr;
+	u16	idx, nsegs, num_io_req;
 
 	fcp->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
 	fcp->num_fwtio_reqs  = cfg->fwcfg.num_fwtio_reqs;
-	fcp->num_itns	= cfg->fwcfg.num_rports;
+	fcp->num_itns   = cfg->fwcfg.num_rports;
 	fcp->bfa = bfa;
 
-	snsbufsz = (fcp->num_ioim_reqs + fcp->num_fwtio_reqs) * BFI_IOIM_SNSLEN;
-	fcp->snsbase.pa = bfa_meminfo_dma_phys(meminfo);
-	bfa_meminfo_dma_phys(meminfo) += snsbufsz;
+	/*
+	 * Setup the pool of snsbase addr's, that is passed to fw as
+	 * part of bfi_iocfc_cfg_s.
+	 */
+	num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
+	nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN);
+
+	bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) {
+
+		if (!bfa_mem_dma_virt(seg_ptr))
+			break;
+
+		fcp->snsbase[idx].pa = bfa_mem_dma_phys(seg_ptr);
+		fcp->snsbase[idx].kva = bfa_mem_dma_virt(seg_ptr);
+		bfa_iocfc_set_snsbase(bfa, idx, fcp->snsbase[idx].pa);
+	}
 
-	fcp->snsbase.kva = bfa_meminfo_dma_virt(meminfo);
-	bfa_meminfo_dma_virt(meminfo) += snsbufsz;
-	bfa_iocfc_set_snsbase(bfa, fcp->snsbase.pa);
+	bfa_fcpim_attach(fcp, bfad, cfg, pcidev);
 
-	bfa_fcpim_attach(fcp, bfad, cfg, meminfo, pcidev);
+	bfa_iotag_attach(fcp);
 
-	fcp->itn_arr = (struct bfa_itn_s *) bfa_meminfo_kva(meminfo);
-	bfa_meminfo_kva(meminfo) = (u8 *)fcp->itn_arr +
+	fcp->itn_arr = (struct bfa_itn_s *) bfa_mem_kva_curp(fcp);
+	bfa_mem_kva_curp(fcp) = (u8 *)fcp->itn_arr +
 			(fcp->num_itns * sizeof(struct bfa_itn_s));
 	memset(fcp->itn_arr, 0,
 			(fcp->num_itns * sizeof(struct bfa_itn_s)));
-
-	bfa_iotag_attach(fcp, meminfo);
 }
 
 static void
@@ -3370,12 +3401,12 @@ bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 }
 
 void
-bfa_iotag_attach(struct bfa_fcp_mod_s *fcp, struct bfa_meminfo_s *minfo)
+bfa_iotag_attach(struct bfa_fcp_mod_s *fcp)
 {
 	struct bfa_iotag_s *iotag;
 	u16	num_io_req, i;
 
-	iotag = (struct bfa_iotag_s *) bfa_meminfo_kva(minfo);
+	iotag = (struct bfa_iotag_s *) bfa_mem_kva_curp(fcp);
 	fcp->iotag_arr = iotag;
 
 	INIT_LIST_HEAD(&fcp->iotag_ioim_free_q);
@@ -3392,5 +3423,5 @@ bfa_iotag_attach(struct bfa_fcp_mod_s *fcp, struct bfa_meminfo_s *minfo)
 			list_add_tail(&iotag->qe, &fcp->iotag_tio_free_q);
 	}
 
-	bfa_meminfo_kva(minfo) = (u8 *) iotag;
+	bfa_mem_kva_curp(fcp) = (u8 *) iotag;
 }
diff --git a/drivers/scsi/bfa/bfa_fcpim.h b/drivers/scsi/bfa/bfa_fcpim.h
index bc6b294..ccb7c6e 100644
--- a/drivers/scsi/bfa/bfa_fcpim.h
+++ b/drivers/scsi/bfa/bfa_fcpim.h
@@ -25,8 +25,8 @@
 #include "bfa_cs.h"
 
 /* FCP module related definitions */
-#define BFA_IO_MAX	2000
-#define BFA_FWTIO_MAX	0
+#define BFA_IO_MAX	BFI_IO_MAX
+#define BFA_FWTIO_MAX	2000
 
 struct bfa_fcp_mod_s;
 struct bfa_iotag_s {
@@ -41,16 +41,17 @@ struct bfa_itn_s {
 void bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport,
 		void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m));
 void bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m);
-void bfa_iotag_attach(struct bfa_fcp_mod_s *fcp, struct bfa_meminfo_s *minfo);
+void bfa_iotag_attach(struct bfa_fcp_mod_s *fcp);
 void bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw);
 
 #define BFA_FCP_MOD(_hal)	(&(_hal)->modules.fcp_mod)
+#define BFA_MEM_FCP_KVA(__bfa)	(&(BFA_FCP_MOD(__bfa)->kva_seg))
 #define BFA_IOTAG_FROM_TAG(_fcp, _tag)	\
 	(&(_fcp)->iotag_arr[(_tag & BFA_IOIM_IOTAG_MASK)])
 #define BFA_ITN_FROM_TAG(_fcp, _tag)	\
 	((_fcp)->itn_arr + ((_tag) & ((_fcp)->num_itns - 1)))
 #define BFA_SNSINFO_FROM_TAG(_fcp, _tag) \
-	(((u8 *)(_fcp)->snsbase.kva) + (_tag * BFI_IOIM_SNSLEN))
+	bfa_mem_get_dmabuf_kva(_fcp, _tag, BFI_IOIM_SNSLEN)
 
 #define BFA_ITNIM_MIN   32
 #define BFA_ITNIM_MAX   1024
@@ -130,6 +131,9 @@ struct bfa_fcpim_s {
 	bfa_fcpim_profile_t     profile_start;
 };
 
+/* Max FCP dma segs required */
+#define BFA_FCP_DMA_SEGS	BFI_IOIM_SNSBUF_SEGS
+
 struct bfa_fcp_mod_s {
 	struct bfa_s		*bfa;
 	struct list_head	iotag_ioim_free_q;	/* free IO resources */
@@ -140,8 +144,10 @@ struct bfa_fcp_mod_s {
 	int			num_ioim_reqs;
 	int			num_fwtio_reqs;
 	int			num_itns;
-	struct bfa_dma_s	snsbase;
+	struct bfa_dma_s	snsbase[BFA_FCP_DMA_SEGS];
 	struct bfa_fcpim_s	fcpim;
+	struct bfa_mem_dma_s	dma_seg[BFA_FCP_DMA_SEGS];
+	struct bfa_mem_kva_s	kva_seg;
 };
 
 /*
@@ -256,8 +262,7 @@ bfa_ioim_maxretry_reached(struct bfa_ioim_s *ioim)
 /*
  * function prototypes
  */
-void	bfa_ioim_attach(struct bfa_fcpim_s *fcpim,
-					struct bfa_meminfo_s *minfo);
+void	bfa_ioim_attach(struct bfa_fcpim_s *fcpim);
 void	bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
 void	bfa_ioim_good_comp_isr(struct bfa_s *bfa,
 					struct bfi_msg_s *msg);
@@ -267,18 +272,15 @@ void	bfa_ioim_cleanup_tm(struct bfa_ioim_s *ioim,
 void	bfa_ioim_iocdisable(struct bfa_ioim_s *ioim);
 void	bfa_ioim_tov(struct bfa_ioim_s *ioim);
 
-void	bfa_tskim_attach(struct bfa_fcpim_s *fcpim,
-					struct bfa_meminfo_s *minfo);
+void	bfa_tskim_attach(struct bfa_fcpim_s *fcpim);
 void	bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
 void	bfa_tskim_iodone(struct bfa_tskim_s *tskim);
 void	bfa_tskim_iocdisable(struct bfa_tskim_s *tskim);
 void	bfa_tskim_cleanup(struct bfa_tskim_s *tskim);
 void	bfa_tskim_res_recfg(struct bfa_s *bfa, u16 num_tskim_fw);
 
-void	bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
-					u32 *dm_len);
-void	bfa_itnim_attach(struct bfa_fcpim_s *fcpim,
-					struct bfa_meminfo_s *minfo);
+void	bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len);
+void	bfa_itnim_attach(struct bfa_fcpim_s *fcpim);
 void	bfa_itnim_iocdisable(struct bfa_itnim_s *itnim);
 void	bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
 void	bfa_itnim_iodone(struct bfa_itnim_s *itnim);
diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
index 1055ca9..83c3f2f 100644
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -85,6 +85,68 @@ struct bfa_sge_s {
 #endif
 
 /*
+ * BFA memory resources
+ */
+struct bfa_mem_dma_s {
+	struct list_head qe;		/* Queue of DMA elements */
+	u32		mem_len;	/* Total Length in Bytes */
+	u8		*kva;		/* kernel virtual address */
+	u64		dma;		/* dma address if DMA memory */
+	u8		*kva_curp;	/* kva allocation cursor */
+	u64		dma_curp;	/* dma allocation cursor */
+};
+#define bfa_mem_dma_t struct bfa_mem_dma_s
+
+struct bfa_mem_kva_s {
+	struct list_head qe;		/* Queue of KVA elements */
+	u32		mem_len;	/* Total Length in Bytes */
+	u8		*kva;		/* kernel virtual address */
+	u8		*kva_curp;	/* kva allocation cursor */
+};
+#define bfa_mem_kva_t struct bfa_mem_kva_s
+
+struct bfa_meminfo_s {
+	struct bfa_mem_dma_s dma_info;
+	struct bfa_mem_kva_s kva_info;
+};
+
+/* BFA memory segment setup macros */
+#define bfa_mem_dma_setup(_meminfo, _dm_ptr, _seg_sz) do {	\
+	((bfa_mem_dma_t *)(_dm_ptr))->mem_len = (_seg_sz);	\
+	if (_seg_sz)						\
+		list_add_tail(&((bfa_mem_dma_t *)_dm_ptr)->qe,	\
+			      &(_meminfo)->dma_info.qe);	\
+} while (0)
+
+#define bfa_mem_kva_setup(_meminfo, _kva_ptr, _seg_sz) do {	\
+	((bfa_mem_kva_t *)(_kva_ptr))->mem_len = (_seg_sz);	\
+	if (_seg_sz)						\
+		list_add_tail(&((bfa_mem_kva_t *)_kva_ptr)->qe,	\
+			      &(_meminfo)->kva_info.qe);	\
+} while (0)
+
+/* BFA dma memory segments iterator */
+#define bfa_mem_dma_sptr(_mod, _i)	(&(_mod)->dma_seg[(_i)])
+#define bfa_mem_dma_seg_iter(_mod, _sptr, _nr, _i)			\
+	for (_i = 0, _sptr = bfa_mem_dma_sptr(_mod, _i); _i < (_nr);	\
+	     _i++, _sptr = bfa_mem_dma_sptr(_mod, _i))
+
+#define bfa_mem_kva_curp(_mod)	((_mod)->kva_seg.kva_curp)
+#define bfa_mem_dma_virt(_sptr)	((_sptr)->kva_curp)
+#define bfa_mem_dma_phys(_sptr)	((_sptr)->dma_curp)
+#define bfa_mem_dma_len(_sptr)	((_sptr)->mem_len)
+
+/* Get the corresponding dma buf kva for a req - from the tag */
+#define bfa_mem_get_dmabuf_kva(_mod, _tag, _rqsz)			      \
+	(((u8 *)(_mod)->dma_seg[BFI_MEM_SEG_FROM_TAG(_tag, _rqsz)].kva_curp) +\
+	 BFI_MEM_SEG_REQ_OFFSET(_tag, _rqsz) * (_rqsz))
+
+/* Get the corresponding dma buf pa for a req - from the tag */
+#define bfa_mem_get_dmabuf_pa(_mod, _tag, _rqsz)			\
+	((_mod)->dma_seg[BFI_MEM_SEG_FROM_TAG(_tag, _rqsz)].dma_curp +	\
+	 BFI_MEM_SEG_REQ_OFFSET(_tag, _rqsz) * (_rqsz))
+
+/*
  * PCI device information required by IOC
  */
 struct bfa_pcidev_s {
@@ -301,7 +363,9 @@ struct bfa_ablk_s {
 	bfa_ablk_cbfn_t		cbfn;
 	void			*cbarg;
 	struct bfa_ioc_notify_s	ioc_notify;
+	struct bfa_mem_dma_s	ablk_dma;
 };
+#define BFA_MEM_ABLK_DMA(__bfa)		(&((__bfa)->modules.ablk.ablk_dma))
 
 #define bfa_ioc_pcifn(__ioc)		((__ioc)->pcidev.pci_func)
 #define bfa_ioc_devid(__ioc)		((__ioc)->pcidev.device_id)
diff --git a/drivers/scsi/bfa/bfa_modules.h b/drivers/scsi/bfa/bfa_modules.h
index 7311169..e27fde8 100644
--- a/drivers/scsi/bfa/bfa_modules.h
+++ b/drivers/scsi/bfa/bfa_modules.h
@@ -57,11 +57,11 @@ enum {
  */
 #define BFA_MODULE(__mod)						\
 	static void bfa_ ## __mod ## _meminfo(				\
-			struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len,	\
-			u32 *dm_len);      \
+			struct bfa_iocfc_cfg_s *cfg,			\
+			struct bfa_meminfo_s *meminfo,			\
+			struct bfa_s *bfa);				\
 	static void bfa_ ## __mod ## _attach(struct bfa_s *bfa,		\
 			void *bfad, struct bfa_iocfc_cfg_s *cfg,	\
-			struct bfa_meminfo_s *meminfo,			\
 			struct bfa_pcidev_s *pcidev);      \
 	static void bfa_ ## __mod ## _detach(struct bfa_s *bfa);      \
 	static void bfa_ ## __mod ## _start(struct bfa_s *bfa);      \
@@ -87,11 +87,11 @@ enum {
  * can leave entry points as NULL)
  */
 struct bfa_module_s {
-	void (*meminfo) (struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
-			u32 *dm_len);
+	void (*meminfo) (struct bfa_iocfc_cfg_s *cfg,
+			 struct bfa_meminfo_s *meminfo,
+			 struct bfa_s *bfa);
 	void (*attach) (struct bfa_s *bfa, void *bfad,
 			struct bfa_iocfc_cfg_s *cfg,
-			struct bfa_meminfo_s *meminfo,
 			struct bfa_pcidev_s *pcidev);
 	void (*detach) (struct bfa_s *bfa);
 	void (*start) (struct bfa_s *bfa);
diff --git a/drivers/scsi/bfa/bfa_port.h b/drivers/scsi/bfa/bfa_port.h
index 1587a6f..b8bdc54 100644
--- a/drivers/scsi/bfa/bfa_port.h
+++ b/drivers/scsi/bfa/bfa_port.h
@@ -45,8 +45,11 @@ struct bfa_port_s {
 	bfa_status_t			endis_status;
 	struct bfa_ioc_notify_s		ioc_notify;
 	bfa_boolean_t			pbc_disabled;
+	struct bfa_mem_dma_s		port_dma;
 };
 
+#define BFA_MEM_PORT_DMA(__bfa)		(&((__bfa)->modules.port.port_dma))
+
 void	     bfa_port_attach(struct bfa_port_s *port, struct bfa_ioc_s *ioc,
 				void *dev, struct bfa_trc_mod_s *trcmod);
 void	bfa_port_notify(void *arg, enum bfa_ioc_event_e event);
diff --git a/drivers/scsi/bfa/bfa_svc.c b/drivers/scsi/bfa/bfa_svc.c
index cfc0b09..4dcf9b9 100644
--- a/drivers/scsi/bfa/bfa_svc.c
+++ b/drivers/scsi/bfa/bfa_svc.c
@@ -113,11 +113,10 @@ static void	bfa_fcxp_queue(struct bfa_fcxp_s *fcxp,
 /*
  * forward declarations for LPS functions
  */
-static void bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len,
-				u32 *dm_len);
+static void bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg,
+		struct bfa_meminfo_s *minfo, struct bfa_s *bfa);
 static void bfa_lps_attach(struct bfa_s *bfa, void *bfad,
 				struct bfa_iocfc_cfg_s *cfg,
-				struct bfa_meminfo_s *meminfo,
 				struct bfa_pcidev_s *pcidev);
 static void bfa_lps_detach(struct bfa_s *bfa);
 static void bfa_lps_start(struct bfa_s *bfa);
@@ -431,47 +430,12 @@ bfa_plog_fchdr_and_pl(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
  */
 
 static void
-claim_fcxp_req_rsp_mem(struct bfa_fcxp_mod_s *mod, struct bfa_meminfo_s *mi)
-{
-	u8	       *dm_kva = NULL;
-	u64	dm_pa;
-	u32	buf_pool_sz;
-
-	dm_kva = bfa_meminfo_dma_virt(mi);
-	dm_pa = bfa_meminfo_dma_phys(mi);
-
-	buf_pool_sz = mod->req_pld_sz * mod->num_fcxps;
-
-	/*
-	 * Initialize the fcxp req payload list
-	 */
-	mod->req_pld_list_kva = dm_kva;
-	mod->req_pld_list_pa = dm_pa;
-	dm_kva += buf_pool_sz;
-	dm_pa += buf_pool_sz;
-	memset(mod->req_pld_list_kva, 0, buf_pool_sz);
-
-	/*
-	 * Initialize the fcxp rsp payload list
-	 */
-	buf_pool_sz = mod->rsp_pld_sz * mod->num_fcxps;
-	mod->rsp_pld_list_kva = dm_kva;
-	mod->rsp_pld_list_pa = dm_pa;
-	dm_kva += buf_pool_sz;
-	dm_pa += buf_pool_sz;
-	memset(mod->rsp_pld_list_kva, 0, buf_pool_sz);
-
-	bfa_meminfo_dma_virt(mi) = dm_kva;
-	bfa_meminfo_dma_phys(mi) = dm_pa;
-}
-
-static void
-claim_fcxps_mem(struct bfa_fcxp_mod_s *mod, struct bfa_meminfo_s *mi)
+claim_fcxps_mem(struct bfa_fcxp_mod_s *mod)
 {
 	u16	i;
 	struct bfa_fcxp_s *fcxp;
 
-	fcxp = (struct bfa_fcxp_s *) bfa_meminfo_kva(mi);
+	fcxp = (struct bfa_fcxp_s *) bfa_mem_kva_curp(mod);
 	memset(fcxp, 0, sizeof(struct bfa_fcxp_s) * mod->num_fcxps);
 
 	INIT_LIST_HEAD(&mod->fcxp_free_q);
@@ -491,40 +455,53 @@ claim_fcxps_mem(struct bfa_fcxp_mod_s *mod, struct bfa_meminfo_s *mi)
 		fcxp = fcxp + 1;
 	}
 
-	bfa_meminfo_kva(mi) = (void *)fcxp;
+	bfa_mem_kva_curp(mod) = (void *)fcxp;
 }
 
 static void
-bfa_fcxp_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len,
-		 u32 *dm_len)
+bfa_fcxp_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
+		struct bfa_s *bfa)
 {
-	u16	num_fcxp_reqs = cfg->fwcfg.num_fcxp_reqs;
+	struct bfa_fcxp_mod_s *fcxp_mod = BFA_FCXP_MOD(bfa);
+	struct bfa_mem_kva_s *fcxp_kva = BFA_MEM_FCXP_KVA(bfa);
+	struct bfa_mem_dma_s *seg_ptr;
+	u16	nsegs, idx, per_seg_fcxp;
+	u16	num_fcxps = cfg->fwcfg.num_fcxp_reqs;
+	u32	per_fcxp_sz;
 
-	if (num_fcxp_reqs == 0)
+	if (num_fcxps == 0)
 		return;
 
-	/*
-	 * Account for req/rsp payload
-	 */
-	*dm_len += BFA_FCXP_MAX_IBUF_SZ * num_fcxp_reqs;
 	if (cfg->drvcfg.min_cfg)
-		*dm_len += BFA_FCXP_MAX_IBUF_SZ * num_fcxp_reqs;
+		per_fcxp_sz = 2 * BFA_FCXP_MAX_IBUF_SZ;
 	else
-		*dm_len += BFA_FCXP_MAX_LBUF_SZ * num_fcxp_reqs;
+		per_fcxp_sz = BFA_FCXP_MAX_IBUF_SZ + BFA_FCXP_MAX_LBUF_SZ;
 
-	/*
-	 * Account for fcxp structs
-	 */
-	*ndm_len += sizeof(struct bfa_fcxp_s) * num_fcxp_reqs;
+	/* dma memory */
+	nsegs = BFI_MEM_DMA_NSEGS(num_fcxps, per_fcxp_sz);
+	per_seg_fcxp = BFI_MEM_NREQS_SEG(per_fcxp_sz);
+
+	bfa_mem_dma_seg_iter(fcxp_mod, seg_ptr, nsegs, idx) {
+		if (num_fcxps >= per_seg_fcxp) {
+			num_fcxps -= per_seg_fcxp;
+			bfa_mem_dma_setup(minfo, seg_ptr,
+				per_seg_fcxp * per_fcxp_sz);
+		} else
+			bfa_mem_dma_setup(minfo, seg_ptr,
+				num_fcxps * per_fcxp_sz);
+	}
+
+	/* kva memory */
+	bfa_mem_kva_setup(minfo, fcxp_kva,
+		cfg->fwcfg.num_fcxp_reqs * sizeof(struct bfa_fcxp_s));
 }
 
 static void
 bfa_fcxp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
-		struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
+		struct bfa_pcidev_s *pcidev)
 {
 	struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);
 
-	memset(mod, 0, sizeof(struct bfa_fcxp_mod_s));
 	mod->bfa = bfa;
 	mod->num_fcxps = cfg->fwcfg.num_fcxp_reqs;
 
@@ -537,8 +514,7 @@ bfa_fcxp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 
 	INIT_LIST_HEAD(&mod->wait_q);
 
-	claim_fcxp_req_rsp_mem(mod, meminfo);
-	claim_fcxps_mem(mod, meminfo);
+	claim_fcxps_mem(mod);
 }
 
 static void
@@ -962,8 +938,8 @@ bfa_fcxp_get_reqbuf(struct bfa_fcxp_s *fcxp)
 	void	*reqbuf;
 
 	WARN_ON(fcxp->use_ireqbuf != 1);
-	reqbuf = ((u8 *)mod->req_pld_list_kva) +
-		fcxp->fcxp_tag * mod->req_pld_sz;
+	reqbuf = bfa_mem_get_dmabuf_kva(mod, fcxp->fcxp_tag,
+				mod->req_pld_sz + mod->rsp_pld_sz);
 	return reqbuf;
 }
 
@@ -986,13 +962,15 @@ void *
 bfa_fcxp_get_rspbuf(struct bfa_fcxp_s *fcxp)
 {
 	struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
-	void	*rspbuf;
+	void	*fcxp_buf;
 
 	WARN_ON(fcxp->use_irspbuf != 1);
 
-	rspbuf = ((u8 *)mod->rsp_pld_list_kva) +
-		fcxp->fcxp_tag * mod->rsp_pld_sz;
-	return rspbuf;
+	fcxp_buf = bfa_mem_get_dmabuf_kva(mod, fcxp->fcxp_tag,
+				mod->req_pld_sz + mod->rsp_pld_sz);
+
+	/* fcxp_buf = req_buf + rsp_buf :- add req_buf_sz to get to rsp_buf */
+	return ((u8 *) fcxp_buf) + mod->req_pld_sz;
 }
 
 /*
@@ -1473,13 +1451,17 @@ bfa_lps_sm_logowait(struct bfa_lps_s *lps, enum bfa_lps_event event)
  * return memory requirement
  */
 static void
-bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len,
-	u32 *dm_len)
+bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
+		struct bfa_s *bfa)
 {
+	struct bfa_mem_kva_s *lps_kva = BFA_MEM_LPS_KVA(bfa);
+
 	if (cfg->drvcfg.min_cfg)
-		*ndm_len += sizeof(struct bfa_lps_s) * BFA_LPS_MIN_LPORTS;
+		bfa_mem_kva_setup(minfo, lps_kva,
+			sizeof(struct bfa_lps_s) * BFA_LPS_MIN_LPORTS);
 	else
-		*ndm_len += sizeof(struct bfa_lps_s) * BFA_LPS_MAX_LPORTS;
+		bfa_mem_kva_setup(minfo, lps_kva,
+			sizeof(struct bfa_lps_s) * BFA_LPS_MAX_LPORTS);
 }
 
 /*
@@ -1487,21 +1469,20 @@ bfa_lps_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len,
  */
 static void
 bfa_lps_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
-	struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
+	struct bfa_pcidev_s *pcidev)
 {
 	struct bfa_lps_mod_s	*mod = BFA_LPS_MOD(bfa);
 	struct bfa_lps_s	*lps;
 	int			i;
 
-	memset(mod, 0, sizeof(struct bfa_lps_mod_s));
 	mod->num_lps = BFA_LPS_MAX_LPORTS;
 	if (cfg->drvcfg.min_cfg)
 		mod->num_lps = BFA_LPS_MIN_LPORTS;
 	else
 		mod->num_lps = BFA_LPS_MAX_LPORTS;
-	mod->lps_arr = lps = (struct bfa_lps_s *) bfa_meminfo_kva(meminfo);
+	mod->lps_arr = lps = (struct bfa_lps_s *) bfa_mem_kva_curp(mod);
 
-	bfa_meminfo_kva(meminfo) += mod->num_lps * sizeof(struct bfa_lps_s);
+	bfa_mem_kva_curp(mod) += mod->num_lps * sizeof(struct bfa_lps_s);
 
 	INIT_LIST_HEAD(&mod->lps_free_q);
 	INIT_LIST_HEAD(&mod->lps_active_q);
@@ -2829,10 +2810,12 @@ bfa_fcport_queue_cb(struct bfa_fcport_ln_s *ln, enum bfa_port_linkstate event)
 							BFA_CACHELINE_SZ))
 
 static void
-bfa_fcport_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len,
-		u32 *dm_len)
+bfa_fcport_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
+		   struct bfa_s *bfa)
 {
-	*dm_len += FCPORT_STATS_DMA_SZ;
+	struct bfa_mem_dma_s *fcport_dma = BFA_MEM_FCPORT_DMA(bfa);
+
+	bfa_mem_dma_setup(minfo, fcport_dma, FCPORT_STATS_DMA_SZ);
 }
 
 static void
@@ -2844,23 +2827,14 @@ bfa_fcport_qresume(void *cbarg)
 }
 
 static void
-bfa_fcport_mem_claim(struct bfa_fcport_s *fcport, struct bfa_meminfo_s *meminfo)
+bfa_fcport_mem_claim(struct bfa_fcport_s *fcport)
 {
-	u8		*dm_kva;
-	u64	dm_pa;
+	struct bfa_mem_dma_s *fcport_dma = &fcport->fcport_dma;
 
-	dm_kva = bfa_meminfo_dma_virt(meminfo);
-	dm_pa  = bfa_meminfo_dma_phys(meminfo);
-
-	fcport->stats_kva = dm_kva;
-	fcport->stats_pa  = dm_pa;
-	fcport->stats	  = (union bfa_fcport_stats_u *) dm_kva;
-
-	dm_kva += FCPORT_STATS_DMA_SZ;
-	dm_pa  += FCPORT_STATS_DMA_SZ;
-
-	bfa_meminfo_dma_virt(meminfo) = dm_kva;
-	bfa_meminfo_dma_phys(meminfo) = dm_pa;
+	fcport->stats_kva = bfa_mem_dma_virt(fcport_dma);
+	fcport->stats_pa  = bfa_mem_dma_phys(fcport_dma);
+	fcport->stats = (union bfa_fcport_stats_u *)
+				bfa_mem_dma_virt(fcport_dma);
 }
 
 /*
@@ -2868,18 +2842,17 @@ bfa_fcport_mem_claim(struct bfa_fcport_s *fcport, struct bfa_meminfo_s *meminfo)
  */
 static void
 bfa_fcport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
-		struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
+		struct bfa_pcidev_s *pcidev)
 {
 	struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
 	struct bfa_port_cfg_s *port_cfg = &fcport->cfg;
 	struct bfa_fcport_ln_s *ln = &fcport->ln;
 	struct timeval tv;
 
-	memset(fcport, 0, sizeof(struct bfa_fcport_s));
 	fcport->bfa = bfa;
 	ln->fcport = fcport;
 
-	bfa_fcport_mem_claim(fcport, meminfo);
+	bfa_fcport_mem_claim(fcport);
 
 	bfa_sm_set_state(fcport, bfa_fcport_sm_uninit);
 	bfa_sm_set_state(ln, bfa_fcport_ln_sm_dn);
@@ -4417,18 +4390,22 @@ bfa_rport_qresume(void *cbarg)
 }
 
 static void
-bfa_rport_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
-		u32 *dm_len)
+bfa_rport_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
+		struct bfa_s *bfa)
 {
+	struct bfa_mem_kva_s *rport_kva = BFA_MEM_RPORT_KVA(bfa);
+
 	if (cfg->fwcfg.num_rports < BFA_RPORT_MIN)
 		cfg->fwcfg.num_rports = BFA_RPORT_MIN;
 
-	*km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_rport_s);
+	/* kva memory */
+	bfa_mem_kva_setup(minfo, rport_kva,
+		cfg->fwcfg.num_rports * sizeof(struct bfa_rport_s));
 }
 
 static void
 bfa_rport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
-		     struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
+		struct bfa_pcidev_s *pcidev)
 {
 	struct bfa_rport_mod_s *mod = BFA_RPORT_MOD(bfa);
 	struct bfa_rport_s *rp;
@@ -4438,7 +4415,7 @@ bfa_rport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 	INIT_LIST_HEAD(&mod->rp_active_q);
 	INIT_LIST_HEAD(&mod->rp_unused_q);
 
-	rp = (struct bfa_rport_s *) bfa_meminfo_kva(meminfo);
+	rp = (struct bfa_rport_s *) bfa_mem_kva_curp(mod);
 	mod->rps_list = rp;
 	mod->num_rports = cfg->fwcfg.num_rports;
 
@@ -4463,7 +4440,7 @@ bfa_rport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 	/*
 	 * consume memory
 	 */
-	bfa_meminfo_kva(meminfo) = (u8 *) rp;
+	bfa_mem_kva_curp(mod) = (u8 *) rp;
 }
 
 static void
@@ -4723,26 +4700,51 @@ bfa_rport_speed(struct bfa_rport_s *rport, enum bfa_port_speed speed)
  * Compute and return memory needed by FCP(im) module.
  */
 static void
-bfa_sgpg_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
-		u32 *dm_len)
+bfa_sgpg_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
+		struct bfa_s *bfa)
 {
+	struct bfa_sgpg_mod_s *sgpg_mod = BFA_SGPG_MOD(bfa);
+	struct bfa_mem_kva_s *sgpg_kva = BFA_MEM_SGPG_KVA(bfa);
+	struct bfa_mem_dma_s *seg_ptr;
+	u16	nsegs, idx, per_seg_sgpg, num_sgpg;
+	u32	sgpg_sz = sizeof(struct bfi_sgpg_s);
+
 	if (cfg->drvcfg.num_sgpgs < BFA_SGPG_MIN)
 		cfg->drvcfg.num_sgpgs = BFA_SGPG_MIN;
+	else if (cfg->drvcfg.num_sgpgs > BFA_SGPG_MAX)
+		cfg->drvcfg.num_sgpgs = BFA_SGPG_MAX;
 
-	*km_len += (cfg->drvcfg.num_sgpgs + 1) * sizeof(struct bfa_sgpg_s);
-	*dm_len += (cfg->drvcfg.num_sgpgs + 1) * sizeof(struct bfi_sgpg_s);
-}
+	num_sgpg = cfg->drvcfg.num_sgpgs;
+
+	nsegs = BFI_MEM_DMA_NSEGS(num_sgpg, sgpg_sz);
+	per_seg_sgpg = BFI_MEM_NREQS_SEG(sgpg_sz);
+
+	bfa_mem_dma_seg_iter(sgpg_mod, seg_ptr, nsegs, idx) {
+		if (num_sgpg >= per_seg_sgpg) {
+			num_sgpg -= per_seg_sgpg;
+			bfa_mem_dma_setup(minfo, seg_ptr,
+					per_seg_sgpg * sgpg_sz);
+		} else
+			bfa_mem_dma_setup(minfo, seg_ptr,
+					num_sgpg * sgpg_sz);
+	}
 
+	/* kva memory */
+	bfa_mem_kva_setup(minfo, sgpg_kva,
+		cfg->drvcfg.num_sgpgs * sizeof(struct bfa_sgpg_s));
+}
 
 static void
 bfa_sgpg_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
-		    struct bfa_meminfo_s *minfo, struct bfa_pcidev_s *pcidev)
+		struct bfa_pcidev_s *pcidev)
 {
 	struct bfa_sgpg_mod_s *mod = BFA_SGPG_MOD(bfa);
-	int i;
 	struct bfa_sgpg_s *hsgpg;
 	struct bfi_sgpg_s *sgpg;
 	u64 align_len;
+	struct bfa_mem_dma_s *seg_ptr;
+	u32	sgpg_sz = sizeof(struct bfi_sgpg_s);
+	u16	i, idx, nsegs, per_seg_sgpg, num_sgpg;
 
 	union {
 		u64 pa;
@@ -4754,39 +4756,45 @@ bfa_sgpg_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 
 	bfa_trc(bfa, cfg->drvcfg.num_sgpgs);
 
-	mod->num_sgpgs = cfg->drvcfg.num_sgpgs;
-	mod->sgpg_arr_pa = bfa_meminfo_dma_phys(minfo);
-	align_len = (BFA_SGPG_ROUNDUP(mod->sgpg_arr_pa) - mod->sgpg_arr_pa);
-	mod->sgpg_arr_pa += align_len;
-	mod->hsgpg_arr = (struct bfa_sgpg_s *) (bfa_meminfo_kva(minfo) +
-						align_len);
-	mod->sgpg_arr = (struct bfi_sgpg_s *) (bfa_meminfo_dma_virt(minfo) +
-						align_len);
-
-	hsgpg = mod->hsgpg_arr;
-	sgpg = mod->sgpg_arr;
-	sgpg_pa.pa = mod->sgpg_arr_pa;
-	mod->free_sgpgs = mod->num_sgpgs;
-
-	WARN_ON(sgpg_pa.pa & (sizeof(struct bfi_sgpg_s) - 1));
-
-	for (i = 0; i < mod->num_sgpgs; i++) {
-		memset(hsgpg, 0, sizeof(*hsgpg));
-		memset(sgpg, 0, sizeof(*sgpg));
-
-		hsgpg->sgpg = sgpg;
-		sgpg_pa_tmp.pa = bfa_sgaddr_le(sgpg_pa.pa);
-		hsgpg->sgpg_pa = sgpg_pa_tmp.addr;
-		list_add_tail(&hsgpg->qe, &mod->sgpg_q);
-
-		hsgpg++;
-		sgpg++;
-		sgpg_pa.pa += sizeof(struct bfi_sgpg_s);
+	mod->free_sgpgs = mod->num_sgpgs = cfg->drvcfg.num_sgpgs;
+
+	num_sgpg = cfg->drvcfg.num_sgpgs;
+	nsegs = BFI_MEM_DMA_NSEGS(num_sgpg, sgpg_sz);
+
+	/* dma/kva mem claim */
+	hsgpg = (struct bfa_sgpg_s *) bfa_mem_kva_curp(mod);
+
+	bfa_mem_dma_seg_iter(mod, seg_ptr, nsegs, idx) {
+
+		if (!bfa_mem_dma_virt(seg_ptr))
+			break;
+
+		align_len = BFA_SGPG_ROUNDUP(bfa_mem_dma_phys(seg_ptr)) -
+					     bfa_mem_dma_phys(seg_ptr);
+
+		sgpg = (struct bfi_sgpg_s *)
+			(((u8 *) bfa_mem_dma_virt(seg_ptr)) + align_len);
+		sgpg_pa.pa = bfa_mem_dma_phys(seg_ptr) + align_len;
+		WARN_ON(sgpg_pa.pa & (sgpg_sz - 1));
+
+		per_seg_sgpg = (seg_ptr->mem_len - (u32)align_len) / sgpg_sz;
+
+		for (i = 0; num_sgpg > 0 && i < per_seg_sgpg; i++, num_sgpg--) {
+			memset(hsgpg, 0, sizeof(*hsgpg));
+			memset(sgpg, 0, sizeof(*sgpg));
+
+			hsgpg->sgpg = sgpg;
+			sgpg_pa_tmp.pa = bfa_sgaddr_le(sgpg_pa.pa);
+			hsgpg->sgpg_pa = sgpg_pa_tmp.addr;
+			list_add_tail(&hsgpg->qe, &mod->sgpg_q);
+
+			sgpg++;
+			hsgpg++;
+			sgpg_pa.pa += sgpg_sz;
+		}
 	}
 
-	bfa_meminfo_kva(minfo) = (u8 *) hsgpg;
-	bfa_meminfo_dma_virt(minfo) = (u8 *) sgpg;
-	bfa_meminfo_dma_phys(minfo) = sgpg_pa.pa;
+	bfa_mem_kva_curp(mod) = (u8 *) hsgpg;
 }
 
 static void
@@ -4928,29 +4936,13 @@ __bfa_cb_uf_recv(void *cbarg, bfa_boolean_t complete)
 }
 
 static void
-claim_uf_pbs(struct bfa_uf_mod_s *ufm, struct bfa_meminfo_s *mi)
-{
-	u32 uf_pb_tot_sz;
-
-	ufm->uf_pbs_kva = (struct bfa_uf_buf_s *) bfa_meminfo_dma_virt(mi);
-	ufm->uf_pbs_pa = bfa_meminfo_dma_phys(mi);
-	uf_pb_tot_sz = BFA_ROUNDUP((sizeof(struct bfa_uf_buf_s) * ufm->num_ufs),
-							BFA_DMA_ALIGN_SZ);
-
-	bfa_meminfo_dma_virt(mi) += uf_pb_tot_sz;
-	bfa_meminfo_dma_phys(mi) += uf_pb_tot_sz;
-
-	memset((void *)ufm->uf_pbs_kva, 0, uf_pb_tot_sz);
-}
-
-static void
-claim_uf_post_msgs(struct bfa_uf_mod_s *ufm, struct bfa_meminfo_s *mi)
+claim_uf_post_msgs(struct bfa_uf_mod_s *ufm)
 {
 	struct bfi_uf_buf_post_s *uf_bp_msg;
 	u16 i;
 	u16 buf_len;
 
-	ufm->uf_buf_posts = (struct bfi_uf_buf_post_s *) bfa_meminfo_kva(mi);
+	ufm->uf_buf_posts = (struct bfi_uf_buf_post_s *) bfa_mem_kva_curp(ufm);
 	uf_bp_msg = ufm->uf_buf_posts;
 
 	for (i = 0, uf_bp_msg = ufm->uf_buf_posts; i < ufm->num_ufs;
@@ -4968,11 +4960,11 @@ claim_uf_post_msgs(struct bfa_uf_mod_s *ufm, struct bfa_meminfo_s *mi)
 	/*
 	 * advance pointer beyond consumed memory
 	 */
-	bfa_meminfo_kva(mi) = (u8 *) uf_bp_msg;
+	bfa_mem_kva_curp(ufm) = (u8 *) uf_bp_msg;
 }
 
 static void
-claim_ufs(struct bfa_uf_mod_s *ufm, struct bfa_meminfo_s *mi)
+claim_ufs(struct bfa_uf_mod_s *ufm)
 {
 	u16 i;
 	struct bfa_uf_s   *uf;
@@ -4980,7 +4972,7 @@ claim_ufs(struct bfa_uf_mod_s *ufm, struct bfa_meminfo_s *mi)
 	/*
 	 * Claim block of memory for UF list
 	 */
-	ufm->uf_list = (struct bfa_uf_s *) bfa_meminfo_kva(mi);
+	ufm->uf_list = (struct bfa_uf_s *) bfa_mem_kva_curp(ufm);
 
 	/*
 	 * Initialize UFs and queue it in UF free queue
@@ -4989,8 +4981,8 @@ claim_ufs(struct bfa_uf_mod_s *ufm, struct bfa_meminfo_s *mi)
 		memset(uf, 0, sizeof(struct bfa_uf_s));
 		uf->bfa = ufm->bfa;
 		uf->uf_tag = i;
-		uf->pb_len = sizeof(struct bfa_uf_buf_s);
-		uf->buf_kva = (void *)&ufm->uf_pbs_kva[i];
+		uf->pb_len = BFA_PER_UF_DMA_SZ;
+		uf->buf_kva = bfa_mem_get_dmabuf_kva(ufm, i, BFA_PER_UF_DMA_SZ);
 		uf->buf_pa = ufm_pbs_pa(ufm, i);
 		list_add_tail(&uf->qe, &ufm->uf_free_q);
 	}
@@ -4998,49 +4990,57 @@ claim_ufs(struct bfa_uf_mod_s *ufm, struct bfa_meminfo_s *mi)
 	/*
 	 * advance memory pointer
 	 */
-	bfa_meminfo_kva(mi) = (u8 *) uf;
+	bfa_mem_kva_curp(ufm) = (u8 *) uf;
 }
 
 static void
-uf_mem_claim(struct bfa_uf_mod_s *ufm, struct bfa_meminfo_s *mi)
+uf_mem_claim(struct bfa_uf_mod_s *ufm)
 {
-	claim_uf_pbs(ufm, mi);
-	claim_ufs(ufm, mi);
-	claim_uf_post_msgs(ufm, mi);
+	claim_ufs(ufm);
+	claim_uf_post_msgs(ufm);
 }
 
 static void
-bfa_uf_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len, u32 *dm_len)
+bfa_uf_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
+		struct bfa_s *bfa)
 {
-	u32 num_ufs = cfg->fwcfg.num_uf_bufs;
-
-	/*
-	 * dma-able memory for UF posted bufs
-	 */
-	*dm_len += BFA_ROUNDUP((sizeof(struct bfa_uf_buf_s) * num_ufs),
-							BFA_DMA_ALIGN_SZ);
+	struct bfa_uf_mod_s *ufm = BFA_UF_MOD(bfa);
+	struct bfa_mem_kva_s *uf_kva = BFA_MEM_UF_KVA(bfa);
+	u32	num_ufs = cfg->fwcfg.num_uf_bufs;
+	struct bfa_mem_dma_s *seg_ptr;
+	u16	nsegs, idx, per_seg_uf = 0;
+
+	nsegs = BFI_MEM_DMA_NSEGS(num_ufs, BFA_PER_UF_DMA_SZ);
+	per_seg_uf = BFI_MEM_NREQS_SEG(BFA_PER_UF_DMA_SZ);
+
+	bfa_mem_dma_seg_iter(ufm, seg_ptr, nsegs, idx) {
+		if (num_ufs >= per_seg_uf) {
+			num_ufs -= per_seg_uf;
+			bfa_mem_dma_setup(minfo, seg_ptr,
+				per_seg_uf * BFA_PER_UF_DMA_SZ);
+		} else
+			bfa_mem_dma_setup(minfo, seg_ptr,
+				num_ufs * BFA_PER_UF_DMA_SZ);
+	}
 
-	/*
-	 * kernel Virtual memory for UFs and UF buf post msg copies
-	 */
-	*ndm_len += sizeof(struct bfa_uf_s) * num_ufs;
-	*ndm_len += sizeof(struct bfi_uf_buf_post_s) * num_ufs;
+	/* kva memory */
+	bfa_mem_kva_setup(minfo, uf_kva, cfg->fwcfg.num_uf_bufs *
+		(sizeof(struct bfa_uf_s) + sizeof(struct bfi_uf_buf_post_s)));
 }
 
 static void
 bfa_uf_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
-		  struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
+		struct bfa_pcidev_s *pcidev)
 {
 	struct bfa_uf_mod_s *ufm = BFA_UF_MOD(bfa);
 
-	memset(ufm, 0, sizeof(struct bfa_uf_mod_s));
 	ufm->bfa = bfa;
 	ufm->num_ufs = cfg->fwcfg.num_uf_bufs;
 	INIT_LIST_HEAD(&ufm->uf_free_q);
 	INIT_LIST_HEAD(&ufm->uf_posted_q);
 	INIT_LIST_HEAD(&ufm->uf_unused_q);
 
-	uf_mem_claim(ufm, meminfo);
+	uf_mem_claim(ufm);
 }
 
 static void
@@ -5098,11 +5098,15 @@ uf_recv(struct bfa_s *bfa, struct bfi_uf_frm_rcvd_s *m)
 {
 	struct bfa_uf_mod_s *ufm = BFA_UF_MOD(bfa);
 	u16 uf_tag = m->buf_tag;
-	struct bfa_uf_buf_s *uf_buf = &ufm->uf_pbs_kva[uf_tag];
 	struct bfa_uf_s *uf = &ufm->uf_list[uf_tag];
-	u8 *buf = &uf_buf->d[0];
+	struct bfa_uf_buf_s *uf_buf;
+	uint8_t *buf;
 	struct fchs_s *fchs;
 
+	uf_buf = (struct bfa_uf_buf_s *)
+			bfa_mem_get_dmabuf_kva(ufm, uf_tag, uf->pb_len);
+	buf = &uf_buf->d[0];
+
 	m->frm_len = be16_to_cpu(m->frm_len);
 	m->xfr_len = be16_to_cpu(m->xfr_len);
 
diff --git a/drivers/scsi/bfa/bfa_svc.h b/drivers/scsi/bfa/bfa_svc.h
index 6df1492..4c0ac3e 100644
--- a/drivers/scsi/bfa/bfa_svc.h
+++ b/drivers/scsi/bfa/bfa_svc.h
@@ -26,6 +26,7 @@
  * Scatter-gather DMA related defines
  */
 #define BFA_SGPG_MIN	(16)
+#define BFA_SGPG_MAX	(8192)
 
 /*
  * Alignment macro for SG page allocation
@@ -54,17 +55,21 @@ struct bfa_sgpg_s {
  */
 #define BFA_SGPG_NPAGE(_nsges)  (((_nsges) / BFI_SGPG_DATA_SGES) + 1)
 
+/* Max SGPG dma segs required */
+#define BFA_SGPG_DMA_SEGS	\
+	BFI_MEM_DMA_NSEGS(BFA_SGPG_MAX, (uint32_t)sizeof(struct bfi_sgpg_s))
+
 struct bfa_sgpg_mod_s {
 	struct bfa_s *bfa;
 	int		num_sgpgs;	/*  number of SG pages		*/
 	int		free_sgpgs;	/*  number of free SG pages	*/
-	struct bfa_sgpg_s	*hsgpg_arr;	/*  BFA SG page array	*/
-	struct bfi_sgpg_s *sgpg_arr;	/*  actual SG page array	*/
-	u64	sgpg_arr_pa;	/*  SG page array DMA addr	*/
 	struct list_head	sgpg_q;		/*  queue of free SG pages */
 	struct list_head	sgpg_wait_q;	/*  wait queue for SG pages */
+	struct bfa_mem_dma_s	dma_seg[BFA_SGPG_DMA_SEGS];
+	struct bfa_mem_kva_s	kva_seg;
 };
 #define BFA_SGPG_MOD(__bfa)	(&(__bfa)->modules.sgpg_mod)
+#define BFA_MEM_SGPG_KVA(__bfa) (&(BFA_SGPG_MOD(__bfa)->kva_seg))
 
 bfa_status_t bfa_sgpg_malloc(struct bfa_s *bfa, struct list_head *sgpg_q,
 			     int nsgpgs);
@@ -79,27 +84,32 @@ void bfa_sgpg_wcancel(struct bfa_s *bfa, struct bfa_sgpg_wqe_s *wqe);
  * FCXP related defines
  */
 #define BFA_FCXP_MIN		(1)
+#define BFA_FCXP_MAX		(256)
 #define BFA_FCXP_MAX_IBUF_SZ	(2 * 1024 + 256)
 #define BFA_FCXP_MAX_LBUF_SZ	(4 * 1024 + 256)
 
+/* Max FCXP dma segs required */
+#define BFA_FCXP_DMA_SEGS						\
+	BFI_MEM_DMA_NSEGS(BFA_FCXP_MAX,					\
+		(u32)BFA_FCXP_MAX_IBUF_SZ + BFA_FCXP_MAX_LBUF_SZ)
+
 struct bfa_fcxp_mod_s {
 	struct bfa_s      *bfa;		/* backpointer to BFA */
 	struct bfa_fcxp_s *fcxp_list;	/* array of FCXPs */
 	u16	num_fcxps;	/* max num FCXP requests */
 	struct list_head  fcxp_free_q;	/* free FCXPs */
 	struct list_head  fcxp_active_q;	/* active FCXPs */
-	void		*req_pld_list_kva;	/* list of FCXP req pld */
-	u64	req_pld_list_pa;	/* list of FCXP req pld */
-	void		*rsp_pld_list_kva;	/* list of FCXP resp pld */
-	u64	rsp_pld_list_pa;	/* list of FCXP resp pld */
 	struct list_head  wait_q;		/* wait queue for free fcxp */
 	struct list_head fcxp_unused_q; /* unused fcxps */
 	u32	req_pld_sz;
 	u32	rsp_pld_sz;
+	struct bfa_mem_dma_s dma_seg[BFA_FCXP_DMA_SEGS];
+	struct bfa_mem_kva_s kva_seg;
 };
 
 #define BFA_FCXP_MOD(__bfa)		(&(__bfa)->modules.fcxp_mod)
 #define BFA_FCXP_FROM_TAG(__mod, __tag)	(&(__mod)->fcxp_list[__tag])
+#define BFA_MEM_FCXP_KVA(__bfa) (&(BFA_FCXP_MOD(__bfa)->kva_seg))
 
 typedef void    (*fcxp_send_cb_t) (struct bfa_s *ioc, struct bfa_fcxp_s *fcxp,
 				   void *cb_arg, bfa_status_t req_status,
@@ -207,13 +217,15 @@ struct bfa_fcxp_wqe_s {
 #define BFA_FCXP_RSP_FCHS(_fcxp)	(&((_fcxp)->rsp_info.fchs))
 #define BFA_FCXP_RSP_PLD(_fcxp)		(bfa_fcxp_get_rspbuf(_fcxp))
 
-#define BFA_FCXP_REQ_PLD_PA(_fcxp)				\
-	((_fcxp)->fcxp_mod->req_pld_list_pa +			\
-	 ((_fcxp)->fcxp_mod->req_pld_sz  * (_fcxp)->fcxp_tag))
+#define BFA_FCXP_REQ_PLD_PA(_fcxp)					      \
+	bfa_mem_get_dmabuf_pa((_fcxp)->fcxp_mod, (_fcxp)->fcxp_tag,	      \
+		(_fcxp)->fcxp_mod->req_pld_sz + (_fcxp)->fcxp_mod->rsp_pld_sz)
 
-#define BFA_FCXP_RSP_PLD_PA(_fcxp)				\
-	((_fcxp)->fcxp_mod->rsp_pld_list_pa +			\
-	 ((_fcxp)->fcxp_mod->rsp_pld_sz * (_fcxp)->fcxp_tag))
+/* fcxp_buf = req_buf + rsp_buf :- add req_buf_sz to get to rsp_buf */
+#define BFA_FCXP_RSP_PLD_PA(_fcxp)					       \
+	(bfa_mem_get_dmabuf_pa((_fcxp)->fcxp_mod, (_fcxp)->fcxp_tag,	       \
+	      (_fcxp)->fcxp_mod->req_pld_sz + (_fcxp)->fcxp_mod->rsp_pld_sz) + \
+	      (_fcxp)->fcxp_mod->req_pld_sz)
 
 void	bfa_fcxp_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
 
@@ -241,9 +253,11 @@ struct bfa_rport_mod_s {
 	struct list_head	rp_active_q;	/*  free bfa_rports	*/
 	struct list_head	rp_unused_q;	/*  unused bfa rports  */
 	u16	num_rports;	/*  number of rports	*/
+	struct bfa_mem_kva_s	kva_seg;
 };
 
 #define BFA_RPORT_MOD(__bfa)	(&(__bfa)->modules.rport_mod)
+#define BFA_MEM_RPORT_KVA(__bfa) (&(BFA_RPORT_MOD(__bfa)->kva_seg))
 
 /*
  * Convert rport tag to RPORT
@@ -301,7 +315,7 @@ struct bfa_rport_s {
  */
 
 #define BFA_UF_MIN	(4)
-
+#define BFA_UF_MAX	(256)
 
 struct bfa_uf_s {
 	struct list_head	qe;	/*  queue element		*/
@@ -329,6 +343,18 @@ struct bfa_uf_s {
  */
 typedef void (*bfa_cb_uf_recv_t) (void *cbarg, struct bfa_uf_s *uf);
 
+#define BFA_UF_BUFSZ	(2 * 1024 + 256)
+
+struct bfa_uf_buf_s {
+	u8	d[BFA_UF_BUFSZ];
+};
+
+#define BFA_PER_UF_DMA_SZ	\
+	(u32)BFA_ROUNDUP(sizeof(struct bfa_uf_buf_s), BFA_DMA_ALIGN_SZ)
+
+/* Max UF dma segs required */
+#define BFA_UF_DMA_SEGS BFI_MEM_DMA_NSEGS(BFA_UF_MAX, BFA_PER_UF_DMA_SZ)
+
 struct bfa_uf_mod_s {
 	struct bfa_s *bfa;		/*  back pointer to BFA */
 	struct bfa_uf_s *uf_list;	/*  array of UFs */
@@ -336,32 +362,23 @@ struct bfa_uf_mod_s {
 	struct list_head	uf_free_q;	/*  free UFs */
 	struct list_head	uf_posted_q;	/*  UFs posted to IOC */
 	struct list_head	uf_unused_q;	/*  unused UF's */
-	struct bfa_uf_buf_s *uf_pbs_kva;	/*  list UF bufs request pld */
-	u64	uf_pbs_pa;	/*  phy addr for UF bufs */
 	struct bfi_uf_buf_post_s *uf_buf_posts;
 	/*  pre-built UF post msgs */
 	bfa_cb_uf_recv_t ufrecv;	/*  uf recv handler function */
 	void		*cbarg;		/*  uf receive handler arg */
+	struct bfa_mem_dma_s	dma_seg[BFA_UF_DMA_SEGS];
+	struct bfa_mem_kva_s	kva_seg;
 };
 
 #define BFA_UF_MOD(__bfa)	(&(__bfa)->modules.uf_mod)
+#define BFA_MEM_UF_KVA(__bfa)	(&(BFA_UF_MOD(__bfa)->kva_seg))
 
 #define ufm_pbs_pa(_ufmod, _uftag)					\
-	((_ufmod)->uf_pbs_pa + sizeof(struct bfa_uf_buf_s) * (_uftag))
+	bfa_mem_get_dmabuf_pa(_ufmod, _uftag, BFA_PER_UF_DMA_SZ)
 
 void	bfa_uf_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
 void	bfa_uf_res_recfg(struct bfa_s *bfa, u16 num_uf_fw);
 
-#define BFA_UF_BUFSZ	(2 * 1024 + 256)
-
-/*
- * @todo private
- */
-struct bfa_uf_buf_s {
-	u8		d[BFA_UF_BUFSZ];
-};
-
-
 /*
  * LPS - bfa lport login/logout service interface
  */
@@ -406,10 +423,12 @@ struct bfa_lps_mod_s {
 	struct list_head		lps_login_q;
 	struct bfa_lps_s	*lps_arr;
 	int			num_lps;
+	struct bfa_mem_kva_s	kva_seg;
 };
 
 #define BFA_LPS_MOD(__bfa)		(&(__bfa)->modules.lps_mod)
 #define BFA_LPS_FROM_TAG(__mod, __tag)	(&(__mod)->lps_arr[__tag])
+#define BFA_MEM_LPS_KVA(__bfa)	(&(BFA_LPS_MOD(__bfa)->kva_seg))
 
 /*
  * external functions
@@ -489,9 +508,11 @@ struct bfa_fcport_s {
 	bfa_boolean_t		bbsc_op_state;	/* Cred recov Oper State */
 	struct bfa_fcport_trunk_s trunk;
 	u16		fcoe_vlan;
+	struct bfa_mem_dma_s	fcport_dma;
 };
 
 #define BFA_FCPORT_MOD(__bfa)	(&(__bfa)->modules.fcport)
+#define BFA_MEM_FCPORT_DMA(__bfa) (&(BFA_FCPORT_MOD(__bfa)->fcport_dma))
 
 /*
  * protected functions
diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c
index 76af7ac..872c9df 100644
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -531,28 +531,26 @@ bfa_fcb_pbc_vport_create(struct bfad_s *bfad, struct bfi_pbc_vport_s pbc_vport)
 void
 bfad_hal_mem_release(struct bfad_s *bfad)
 {
-	int		i;
 	struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
-	struct bfa_mem_elem_s *meminfo_elem;
-
-	for (i = 0; i < BFA_MEM_TYPE_MAX; i++) {
-		meminfo_elem = &hal_meminfo->meminfo[i];
-		if (meminfo_elem->kva != NULL) {
-			switch (meminfo_elem->mem_type) {
-			case BFA_MEM_TYPE_KVA:
-				vfree(meminfo_elem->kva);
-				break;
-			case BFA_MEM_TYPE_DMA:
-				dma_free_coherent(&bfad->pcidev->dev,
-					meminfo_elem->mem_len,
-					meminfo_elem->kva,
-					(dma_addr_t) meminfo_elem->dma);
-				break;
-			default:
-				WARN_ON(1);
-				break;
-			}
-		}
+	struct bfa_mem_dma_s *dma_info, *dma_elem;
+	struct bfa_mem_kva_s *kva_info, *kva_elem;
+	struct list_head *dm_qe, *km_qe;
+
+	dma_info = &hal_meminfo->dma_info;
+	kva_info = &hal_meminfo->kva_info;
+
+	/* Iterate through the KVA meminfo queue */
+	list_for_each(km_qe, &kva_info->qe) {
+		kva_elem = (struct bfa_mem_kva_s *) km_qe;
+		vfree(kva_elem->kva);
+	}
+
+	/* Iterate through the DMA meminfo queue */
+	list_for_each(dm_qe, &dma_info->qe) {
+		dma_elem = (struct bfa_mem_dma_s *) dm_qe;
+		dma_free_coherent(&bfad->pcidev->dev,
+				dma_elem->mem_len, dma_elem->kva,
+				(dma_addr_t) dma_elem->dma);
 	}
 
 	memset(hal_meminfo, 0, sizeof(struct bfa_meminfo_s));
@@ -567,15 +565,15 @@ bfad_update_hal_cfg(struct bfa_iocfc_cfg_s *bfa_cfg)
 		bfa_cfg->fwcfg.num_ioim_reqs = num_ios;
 	if (num_tms > 0)
 		bfa_cfg->fwcfg.num_tskim_reqs = num_tms;
-	if (num_fcxps > 0)
+	if (num_fcxps > 0 && num_fcxps <= BFA_FCXP_MAX)
 		bfa_cfg->fwcfg.num_fcxp_reqs = num_fcxps;
-	if (num_ufbufs > 0)
+	if (num_ufbufs > 0 && num_ufbufs <= BFA_UF_MAX)
 		bfa_cfg->fwcfg.num_uf_bufs = num_ufbufs;
 	if (reqq_size > 0)
 		bfa_cfg->drvcfg.num_reqq_elems = reqq_size;
 	if (rspq_size > 0)
 		bfa_cfg->drvcfg.num_rspq_elems = rspq_size;
-	if (num_sgpgs > 0)
+	if (num_sgpgs > 0 && num_sgpgs <= BFA_SGPG_MAX)
 		bfa_cfg->drvcfg.num_sgpgs = num_sgpgs;
 
 	/*
@@ -595,85 +593,46 @@ bfad_update_hal_cfg(struct bfa_iocfc_cfg_s *bfa_cfg)
 bfa_status_t
 bfad_hal_mem_alloc(struct bfad_s *bfad)
 {
-	int		i;
 	struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
-	struct bfa_mem_elem_s *meminfo_elem;
-	dma_addr_t	phys_addr;
-	void	       *kva;
+	struct bfa_mem_dma_s *dma_info, *dma_elem;
+	struct bfa_mem_kva_s *kva_info, *kva_elem;
+	struct list_head *dm_qe, *km_qe;
 	bfa_status_t	rc = BFA_STATUS_OK;
-	int retry_count = 0;
-	int reset_value = 1;
-	int min_num_sgpgs = 512;
+	dma_addr_t	phys_addr;
 
 	bfa_cfg_get_default(&bfad->ioc_cfg);
-
-retry:
 	bfad_update_hal_cfg(&bfad->ioc_cfg);
 	bfad->cfg_data.ioc_queue_depth = bfad->ioc_cfg.fwcfg.num_ioim_reqs;
-	bfa_cfg_get_meminfo(&bfad->ioc_cfg, hal_meminfo);
-
-	for (i = 0; i < BFA_MEM_TYPE_MAX; i++) {
-		meminfo_elem = &hal_meminfo->meminfo[i];
-		switch (meminfo_elem->mem_type) {
-		case BFA_MEM_TYPE_KVA:
-			kva = vmalloc(meminfo_elem->mem_len);
-			if (kva == NULL) {
-				bfad_hal_mem_release(bfad);
-				rc = BFA_STATUS_ENOMEM;
-				goto ext;
-			}
-			memset(kva, 0, meminfo_elem->mem_len);
-			meminfo_elem->kva = kva;
-			break;
-		case BFA_MEM_TYPE_DMA:
-			kva = dma_alloc_coherent(&bfad->pcidev->dev,
-				meminfo_elem->mem_len, &phys_addr, GFP_KERNEL);
-			if (kva == NULL) {
-				bfad_hal_mem_release(bfad);
-				/*
-				 * If we cannot allocate with default
-				 * num_sgpages try with half the value.
-				 */
-				if (num_sgpgs > min_num_sgpgs) {
-					printk(KERN_INFO
-					"bfad[%d]: memory allocation failed"
-					" with num_sgpgs: %d\n",
-						bfad->inst_no, num_sgpgs);
-					nextLowerInt(&num_sgpgs);
-					printk(KERN_INFO
-					"bfad[%d]: trying to allocate memory"
-					" with num_sgpgs: %d\n",
-						bfad->inst_no, num_sgpgs);
-					retry_count++;
-					goto retry;
-				} else {
-					if (num_sgpgs_parm > 0)
-						num_sgpgs = num_sgpgs_parm;
-					else {
-						reset_value =
-							(1 << retry_count);
-						num_sgpgs *= reset_value;
-					}
-					rc = BFA_STATUS_ENOMEM;
-					goto ext;
-				}
-			}
-
-			if (num_sgpgs_parm > 0)
-				num_sgpgs = num_sgpgs_parm;
-			else {
-				reset_value = (1 << retry_count);
-				num_sgpgs *= reset_value;
-			}
-
-			memset(kva, 0, meminfo_elem->mem_len);
-			meminfo_elem->kva = kva;
-			meminfo_elem->dma = phys_addr;
-			break;
-		default:
-			break;
+	bfa_cfg_get_meminfo(&bfad->ioc_cfg, hal_meminfo, &bfad->bfa);
+
+	dma_info = &hal_meminfo->dma_info;
+	kva_info = &hal_meminfo->kva_info;
+
+	/* Iterate through the KVA meminfo queue */
+	list_for_each(km_qe, &kva_info->qe) {
+		kva_elem = (struct bfa_mem_kva_s *) km_qe;
+		kva_elem->kva = vmalloc(kva_elem->mem_len);
+		if (kva_elem->kva == NULL) {
+			bfad_hal_mem_release(bfad);
+			rc = BFA_STATUS_ENOMEM;
+			goto ext;
+		}
+		memset(kva_elem->kva, 0, kva_elem->mem_len);
+	}
 
+	/* Iterate through the DMA meminfo queue */
+	list_for_each(dm_qe, &dma_info->qe) {
+		dma_elem = (struct bfa_mem_dma_s *) dm_qe;
+		dma_elem->kva = dma_alloc_coherent(&bfad->pcidev->dev,
+						dma_elem->mem_len,
+						&phys_addr, GFP_KERNEL);
+		if (dma_elem->kva == NULL) {
+			bfad_hal_mem_release(bfad);
+			rc = BFA_STATUS_ENOMEM;
+			goto ext;
 		}
+		dma_elem->dma = phys_addr;
+		memset(dma_elem->kva, 0, dma_elem->mem_len);
 	}
 ext:
 	return rc;
diff --git a/drivers/scsi/bfa/bfad_drv.h b/drivers/scsi/bfa/bfad_drv.h
index 7cfaa62..e5163c7 100644
--- a/drivers/scsi/bfa/bfad_drv.h
+++ b/drivers/scsi/bfa/bfad_drv.h
@@ -276,21 +276,6 @@ struct bfad_hal_comp {
 	struct completion comp;
 };
 
-/*
- * Macro to obtain the immediate lower power
- * of two for the integer.
- */
-#define nextLowerInt(x)                         \
-do {                                            \
-	int __i;                                  \
-	(*x)--;					\
-	for (__i = 1; __i < (sizeof(int)*8); __i <<= 1) \
-		(*x) = (*x) | (*x) >> __i;	\
-	(*x)++;					\
-	(*x) = (*x) >> 1;			\
-} while (0)
-
-
 #define BFA_LOG(level, bfad, mask, fmt, arg...)				\
 do {									\
 	if (((mask) == 4) || (level[1] <= '4'))				\
diff --git a/drivers/scsi/bfa/bfi.h b/drivers/scsi/bfa/bfi.h
index 40002f4..d36c81b 100644
--- a/drivers/scsi/bfa/bfi.h
+++ b/drivers/scsi/bfa/bfi.h
@@ -23,6 +23,24 @@
 
 #pragma pack(1)
 
+/* Per dma segment max size */
+#define BFI_MEM_DMA_SEG_SZ	(131072)
+
+/* Get number of dma segments required */
+#define BFI_MEM_DMA_NSEGS(_num_reqs, _req_sz)				\
+	((u16)(((((_num_reqs) * (_req_sz)) + BFI_MEM_DMA_SEG_SZ - 1) &	\
+	 ~(BFI_MEM_DMA_SEG_SZ - 1)) / BFI_MEM_DMA_SEG_SZ))
+
+/* Get num dma reqs - that fit in a segment */
+#define BFI_MEM_NREQS_SEG(_rqsz) (BFI_MEM_DMA_SEG_SZ / (_rqsz))
+
+/* Get segment num from tag */
+#define BFI_MEM_SEG_FROM_TAG(_tag, _rqsz) ((_tag) / BFI_MEM_NREQS_SEG(_rqsz))
+
+/* Get dma req offset in a segment */
+#define BFI_MEM_SEG_REQ_OFFSET(_tag, _sz)	\
+	((_tag) - (BFI_MEM_SEG_FROM_TAG(_tag, _sz) * BFI_MEM_NREQS_SEG(_sz)))
+
 /*
  * BFI FW image type
  */
@@ -46,7 +64,6 @@ struct bfi_mhdr_s {
 
 #define bfi_fn_lpu(__fn, __lpu)	((__fn) << 1 | (__lpu))
 #define bfi_mhdr_2_fn(_mh)	((_mh)->mtag.h2i.fn_lpu >> 1)
-#define bfi_mhdr_2_qid(_m)	((_mh)->mtag.h2i.qid)
 
 #define bfi_h2i_set(_mh, _mc, _op, _fn_lpu) do {		\
 	(_mh).msg_class		= (_mc);      \
@@ -133,6 +150,12 @@ struct bfi_sgpg_s {
 	u32	rsvd[BFI_SGPG_RSVD_WD_LEN];
 };
 
+/* FCP module definitions */
+#define BFI_IO_MAX	(2000)
+#define BFI_IOIM_SNSLEN	(256)
+#define BFI_IOIM_SNSBUF_SEGS	\
+	BFI_MEM_DMA_NSEGS(BFI_IO_MAX, BFI_IOIM_SNSLEN)
+
 /*
  * Large Message structure - 128 Bytes size Msgs
  */
diff --git a/drivers/scsi/bfa/bfi_ms.h b/drivers/scsi/bfa/bfi_ms.h
index 0727c75..0d9f1fb 100644
--- a/drivers/scsi/bfa/bfi_ms.h
+++ b/drivers/scsi/bfa/bfi_ms.h
@@ -46,10 +46,12 @@ struct bfi_iocfc_cfg_s {
 	u8	 sense_buf_len;	/*  SCSI sense length	    */
 	u16	rsvd_1;
 	u32	endian_sig;	/*  endian signature of host     */
+	u8	rsvd_2;
+	u8	single_msix_vec;
+	u8	rsvd[2];
 	__be16	num_ioim_reqs;
 	__be16	num_fwtio_reqs;
-	u8	single_msix_vec;
-	u8	rsvd[3];
+
 
 	/*
 	 * Request and response circular queue base addresses, size and
@@ -64,7 +66,8 @@ struct bfi_iocfc_cfg_s {
 
 	union bfi_addr_u  stats_addr;	/*  DMA-able address for stats	  */
 	union bfi_addr_u  cfgrsp_addr;	/*  config response dma address  */
-	union bfi_addr_u  ioim_snsbase;  /*  IO sense buffer base address */
+	union bfi_addr_u  ioim_snsbase[BFI_IOIM_SNSBUF_SEGS];
+					/*  IO sense buf base addr segments */
 	struct bfa_iocfc_intr_attr_s intr_attr; /*  IOC interrupt attributes */
 };
 
@@ -753,7 +756,6 @@ enum bfi_ioim_status {
 	BFI_IOIM_STS_PATHTOV = 8,
 };
 
-#define BFI_IOIM_SNSLEN	(256)
 /*
  * I/O response message
  */