[PATCH 00/19] megaraid_sas: Updates for scsi-next

[PATCH 00/19] megaraid_sas: Updates for scsi-next

[Shivasharan S]

Shivasharan S (19):
  megaraid_sas: use adapter_type for all gen controllers
  megaraid_sas: Add support for Crusader controllers
  megaraid_sas: replace instance->ctrl_context checks with
    instance->adapter_type
  megaraid_sas: Remove redundant checks for ctrl_context
  megaraid_sas: replace is_ventura with adapter_type checks
  megaraid_sas: reduce size of fusion_context and use kmalloc for
    allocation
  megaraid_sas: Create separate functions to allocate ctrl memory
  megaraid_sas: Create separate functions for allocating and freeing
    controller DMA buffers
  megaraid_sas: Pre-allocate frequently used DMA buffers
  megaraid_sas: remove instance->ctrl_info
  megaraid_sas: Move initialization of instance parameters inside newly
    created function megasas_init_ctrl_params
  megaraid_sas: Move controller memory allocations and DMA mask settings
    from probe to megasas_init_fw
  megaraid_sas: Update current host time to FW during IOC Init
  megaraid_sas: Resize MFA frame used for IOC INIT to 4k
  megaraid_sas: Incorrect processing of IOCTL frames for SMP/STP
    commands
  megaraid_sas: Retry with reduced queue depth when alloc fails for
    higher QD
  megaraid_sas: Do not limit queue_depth to 1k in non-RDPQ mode
  megaraid_sas: Add support for 64bit consistent DMA
  megaraid_sas: driver version upgrade

 drivers/scsi/megaraid/megaraid_sas.h        |   64 +-
 drivers/scsi/megaraid/megaraid_sas_base.c   | 1023 +++++++++++++++++----------
 drivers/scsi/megaraid/megaraid_sas_fp.c     |   20 +-
 drivers/scsi/megaraid/megaraid_sas_fusion.c |  676 +++++++++++++-----
 drivers/scsi/megaraid/megaraid_sas_fusion.h |   29 +-
 5 files changed, 1207 insertions(+), 605 deletions(-)

-- 
2.14.1.dirty

[PATCH 01/19] megaraid_sas: use adapter_type for all gen controllers

[Shivasharan S]

No functional change.
Refactor adapter_type to set for all generation controllers, not
just for fusion controllers.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h        |  8 +++
 drivers/scsi/megaraid/megaraid_sas_base.c   | 88 ++++++++++++++++++-----------
 drivers/scsi/megaraid/megaraid_sas_fp.c     | 10 ++--
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 18 +++---
 drivers/scsi/megaraid/megaraid_sas_fusion.h |  7 ---
 5 files changed, 76 insertions(+), 55 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index a6722c93a295..90b9b5d7f0f8 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1504,6 +1504,13 @@ enum FW_BOOT_CONTEXT {
 
 #define MR_CAN_HANDLE_SYNC_CACHE_OFFSET		0X01000000
 
+enum MR_ADAPTER_TYPE {
+	MFI_SERIES = 1,
+	THUNDERBOLT_SERIES = 2,
+	INVADER_SERIES = 3,
+	VENTURA_SERIES = 4,
+};
+
 /*
 * register set for both 1068 and 1078 controllers
 * structure extended for 1078 registers
@@ -2242,6 +2249,7 @@ struct megasas_instance {
 	/* preffered count to send as LDIO irrspective of FP capable.*/
 	u8  r1_ldio_hint_default;
 	u32 nvme_page_size;
+	u8 adapter_type;
 };
 struct MR_LD_VF_MAP {
 	u32 size;
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 518318491899..2f9955c6c2af 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -5229,7 +5229,8 @@ static int megasas_init_fw(struct megasas_instance *instance)
 			(&instance->reg_set->outbound_scratch_pad_2);
 		/* Check max MSI-X vectors */
 		if (fusion) {
-			if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/
+			if (instance->adapter_type == THUNDERBOLT_SERIES) {
+				/* Thunderbolt Series*/
 				instance->msix_vectors = (scratch_pad_2
 					& MR_MAX_REPLY_QUEUES_OFFSET) + 1;
 				fw_msix_count = instance->msix_vectors;
@@ -5965,6 +5966,46 @@ megasas_set_dma_mask(struct pci_dev *pdev)
 	return 1;
 }
 
+/*
+ * megasas_set_adapter_type -	Set adapter type.
+ *				Supported controllers can be divided in
+ *				4 categories-  enum MR_ADAPTER_TYPE {
+ *							MFI_SERIES = 1,
+ *							THUNDERBOLT_SERIES = 2,
+ *							INVADER_SERIES = 3,
+ *							VENTURA_SERIES = 4,
+ *						};
+ * @instance:			Adapter soft state
+ * return:			void
+ */
+static inline void megasas_set_adapter_type(struct megasas_instance *instance)
+{
+	switch (instance->pdev->device) {
+	case PCI_DEVICE_ID_LSI_VENTURA:
+	case PCI_DEVICE_ID_LSI_HARPOON:
+	case PCI_DEVICE_ID_LSI_TOMCAT:
+	case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
+	case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
+		instance->adapter_type = VENTURA_SERIES;
+		break;
+	case PCI_DEVICE_ID_LSI_FUSION:
+	case PCI_DEVICE_ID_LSI_PLASMA:
+		instance->adapter_type = THUNDERBOLT_SERIES;
+		break;
+	case PCI_DEVICE_ID_LSI_INVADER:
+	case PCI_DEVICE_ID_LSI_INTRUDER:
+	case PCI_DEVICE_ID_LSI_INTRUDER_24:
+	case PCI_DEVICE_ID_LSI_CUTLASS_52:
+	case PCI_DEVICE_ID_LSI_CUTLASS_53:
+	case PCI_DEVICE_ID_LSI_FURY:
+		instance->adapter_type = INVADER_SERIES;
+		break;
+	default: /* For all other supported controllers */
+		instance->adapter_type = MFI_SERIES;
+		break;
+	}
+}
+
 /**
  * megasas_probe_one -	PCI hotplug entry point
  * @pdev:		PCI device structure
@@ -5977,7 +6018,6 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	struct Scsi_Host *host;
 	struct megasas_instance *instance;
 	u16 control = 0;
-	struct fusion_context *fusion = NULL;
 
 	/* Reset MSI-X in the kdump kernel */
 	if (reset_devices) {
@@ -6022,39 +6062,10 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	atomic_set(&instance->fw_reset_no_pci_access, 0);
 	instance->pdev = pdev;
 
-	switch (instance->pdev->device) {
-	case PCI_DEVICE_ID_LSI_VENTURA:
-	case PCI_DEVICE_ID_LSI_HARPOON:
-	case PCI_DEVICE_ID_LSI_TOMCAT:
-	case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
-	case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
-	     instance->is_ventura = true;
-	case PCI_DEVICE_ID_LSI_FUSION:
-	case PCI_DEVICE_ID_LSI_PLASMA:
-	case PCI_DEVICE_ID_LSI_INVADER:
-	case PCI_DEVICE_ID_LSI_FURY:
-	case PCI_DEVICE_ID_LSI_INTRUDER:
-	case PCI_DEVICE_ID_LSI_INTRUDER_24:
-	case PCI_DEVICE_ID_LSI_CUTLASS_52:
-	case PCI_DEVICE_ID_LSI_CUTLASS_53:
-	{
-		if (megasas_alloc_fusion_context(instance)) {
-			megasas_free_fusion_context(instance);
-			goto fail_alloc_dma_buf;
-		}
-		fusion = instance->ctrl_context;
-
-		if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
-			(instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA))
-			fusion->adapter_type = THUNDERBOLT_SERIES;
-		else if (instance->is_ventura)
-			fusion->adapter_type = VENTURA_SERIES;
-		else
-			fusion->adapter_type = INVADER_SERIES;
-	}
-	break;
-	default: /* For all other supported controllers */
+	megasas_set_adapter_type(instance);
 
+	switch (instance->adapter_type) {
+	case MFI_SERIES:
 		instance->producer =
 			pci_alloc_consistent(pdev, sizeof(u32),
 					     &instance->producer_h);
@@ -6070,7 +6081,16 @@ static int megasas_probe_one(struct pci_dev *pdev,
 
 		*instance->producer = 0;
 		*instance->consumer = 0;
+
 		break;
+	case VENTURA_SERIES:
+		instance->is_ventura = 1;
+	case THUNDERBOLT_SERIES:
+	case INVADER_SERIES:
+		if (megasas_alloc_fusion_context(instance)) {
+			megasas_free_fusion_context(instance);
+			goto fail_alloc_dma_buf;
+		}
 	}
 
 	/* Crash dump feature related initialisation*/
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
index ecc699a65bac..47af0e13b97a 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -747,8 +747,8 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
 		}
 	} else {
 		if ((raid->level >= 5) &&
-			((fusion->adapter_type == THUNDERBOLT_SERIES)  ||
-			((fusion->adapter_type == INVADER_SERIES) &&
+			((instance->adapter_type == THUNDERBOLT_SERIES)  ||
+			((instance->adapter_type == INVADER_SERIES) &&
 			(raid->regTypeReqOnRead != REGION_TYPE_UNUSED))))
 			pRAID_Context->reg_lock_flags = REGION_TYPE_EXCLUSIVE;
 		else if (raid->level == 1) {
@@ -863,8 +863,8 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
 		}
 	} else {
 		if ((raid->level >= 5) &&
-			((fusion->adapter_type == THUNDERBOLT_SERIES)  ||
-			((fusion->adapter_type == INVADER_SERIES) &&
+			((instance->adapter_type == THUNDERBOLT_SERIES)  ||
+			((instance->adapter_type == INVADER_SERIES) &&
 			(raid->regTypeReqOnRead != REGION_TYPE_UNUSED))))
 			pRAID_Context->reg_lock_flags = REGION_TYPE_EXCLUSIVE;
 		else if (raid->level == 1) {
@@ -1088,7 +1088,7 @@ MR_BuildRaidContext(struct megasas_instance *instance,
 		cpu_to_le16(raid->fpIoTimeoutForLd ?
 			    raid->fpIoTimeoutForLd :
 			    map->raidMap.fpPdIoTimeoutSec);
-	if (fusion->adapter_type == INVADER_SERIES)
+	if (instance->adapter_type == INVADER_SERIES)
 		pRAID_Context->reg_lock_flags = (isRead) ?
 			raid->regTypeReqOnRead : raid->regTypeReqOnWrite;
 	else if (!instance->is_ventura)
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 11bd2e698b84..cd997ccf5ebf 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -845,7 +845,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
 
 	/* driver support Extended MSIX */
-	if (fusion->adapter_type >= INVADER_SERIES)
+	if (instance->adapter_type >= INVADER_SERIES)
 		drv_ops->mfi_capabilities.support_additional_msix = 1;
 	/* driver supports HA / Remote LUN over Fast Path interface */
 	drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
@@ -1803,7 +1803,7 @@ megasas_make_sgl_fusion(struct megasas_instance *instance,
 
 	fusion = instance->ctrl_context;
 
-	if (fusion->adapter_type >= INVADER_SERIES) {
+	if (instance->adapter_type >= INVADER_SERIES) {
 		struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
 		sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
 		sgl_ptr_end->Flags = 0;
@@ -1813,7 +1813,7 @@ megasas_make_sgl_fusion(struct megasas_instance *instance,
 		sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
 		sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
 		sgl_ptr->Flags = 0;
-		if (fusion->adapter_type >= INVADER_SERIES)
+		if (instance->adapter_type >= INVADER_SERIES)
 			if (i == sge_count - 1)
 				sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
 		sgl_ptr++;
@@ -1823,7 +1823,7 @@ megasas_make_sgl_fusion(struct megasas_instance *instance,
 		    (sge_count > fusion->max_sge_in_main_msg)) {
 
 			struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
-			if (fusion->adapter_type >= INVADER_SERIES) {
+			if (instance->adapter_type >= INVADER_SERIES) {
 				if ((le16_to_cpu(cmd->io_request->IoFlags) &
 					MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
 					MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
@@ -1839,7 +1839,7 @@ megasas_make_sgl_fusion(struct megasas_instance *instance,
 			sg_chain = sgl_ptr;
 			/* Prepare chain element */
 			sg_chain->NextChainOffset = 0;
-			if (fusion->adapter_type >= INVADER_SERIES)
+			if (instance->adapter_type >= INVADER_SERIES)
 				sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
 			else
 				sg_chain->Flags =
@@ -2416,7 +2416,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
 		cmd->request_desc->SCSIIO.RequestFlags =
 			(MPI2_REQ_DESCRIPT_FLAGS_FP_IO
 			 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
-		if (fusion->adapter_type == INVADER_SERIES) {
+		if (instance->adapter_type == INVADER_SERIES) {
 			if (io_request->RaidContext.raid_context.reg_lock_flags ==
 			    REGION_TYPE_UNUSED)
 				cmd->request_desc->SCSIIO.RequestFlags =
@@ -2481,7 +2481,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
 		cmd->request_desc->SCSIIO.RequestFlags =
 			(MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
 			 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
-		if (fusion->adapter_type == INVADER_SERIES) {
+		if (instance->adapter_type == INVADER_SERIES) {
 			if (io_info.do_fp_rlbypass ||
 			(io_request->RaidContext.raid_context.reg_lock_flags
 					== REGION_TYPE_UNUSED))
@@ -2702,7 +2702,7 @@ megasas_build_syspd_fusion(struct megasas_instance *instance,
 		pRAID_Context->timeout_value =
 			cpu_to_le16((os_timeout_value > timeout_limit) ?
 			timeout_limit : os_timeout_value);
-		if (fusion->adapter_type >= INVADER_SERIES)
+		if (instance->adapter_type >= INVADER_SERIES)
 			io_request->IoFlags |=
 				cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
 
@@ -3315,7 +3315,7 @@ build_mpt_mfi_pass_thru(struct megasas_instance *instance,
 
 	io_req = cmd->io_request;
 
-	if (fusion->adapter_type >= INVADER_SERIES) {
+	if (instance->adapter_type >= INVADER_SERIES) {
 		struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
 			(struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
 		sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index d78d76112501..7c1f7ccf031d 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -104,12 +104,6 @@ enum MR_RAID_FLAGS_IO_SUB_TYPE {
 #define RAID_1_PEER_CMDS 2
 #define JBOD_MAPS_COUNT	2
 
-enum MR_FUSION_ADAPTER_TYPE {
-	THUNDERBOLT_SERIES = 0,
-	INVADER_SERIES = 1,
-	VENTURA_SERIES = 2,
-};
-
 /*
  * Raid Context structure which describes MegaRAID specific IO Parameters
  * This resides at offset 0x60 where the SGL normally starts in MPT IO Frames
@@ -1319,7 +1313,6 @@ struct fusion_context {
 	struct LD_LOAD_BALANCE_INFO *load_balance_info;
 	u32 load_balance_info_pages;
 	LD_SPAN_INFO log_to_span[MAX_LOGICAL_DRIVES_EXT];
-	u8 adapter_type;
 	struct LD_STREAM_DETECT **stream_detect_by_ld;
 };
 
-- 
2.14.1.dirty

[PATCH 02/19] megaraid_sas: Add support for Crusader controllers

[Shivasharan S]

Add support for PCI VID/DID 0x1000/0x0015 based MegaRAID controllers.
Since the DID 0x0015 conflicts with DELL PERC5 controllers,
add vendor ID based check specific for DELL PERC5.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h      |  1 +
 drivers/scsi/megaraid/megaraid_sas_base.c | 51 ++++++++++++++++++-------------
 2 files changed, 30 insertions(+), 22 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 90b9b5d7f0f8..3f20273b115b 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -57,6 +57,7 @@
 #define PCI_DEVICE_ID_LSI_CUTLASS_52		0x0052
 #define PCI_DEVICE_ID_LSI_CUTLASS_53		0x0053
 #define PCI_DEVICE_ID_LSI_VENTURA		    0x0014
+#define PCI_DEVICE_ID_LSI_CRUSADER		    0x0015
 #define PCI_DEVICE_ID_LSI_HARPOON		    0x0016
 #define PCI_DEVICE_ID_LSI_TOMCAT		    0x0017
 #define PCI_DEVICE_ID_LSI_VENTURA_4PORT		0x001B
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 2f9955c6c2af..eba627ccd041 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -161,6 +161,7 @@ static struct pci_device_id megasas_pci_table[] = {
 	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 	/* VENTURA */
 	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
+	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
 	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
 	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
 	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
@@ -5980,29 +5981,35 @@ megasas_set_dma_mask(struct pci_dev *pdev)
  */
 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
 {
-	switch (instance->pdev->device) {
-	case PCI_DEVICE_ID_LSI_VENTURA:
-	case PCI_DEVICE_ID_LSI_HARPOON:
-	case PCI_DEVICE_ID_LSI_TOMCAT:
-	case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
-	case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
-		instance->adapter_type = VENTURA_SERIES;
-		break;
-	case PCI_DEVICE_ID_LSI_FUSION:
-	case PCI_DEVICE_ID_LSI_PLASMA:
-		instance->adapter_type = THUNDERBOLT_SERIES;
-		break;
-	case PCI_DEVICE_ID_LSI_INVADER:
-	case PCI_DEVICE_ID_LSI_INTRUDER:
-	case PCI_DEVICE_ID_LSI_INTRUDER_24:
-	case PCI_DEVICE_ID_LSI_CUTLASS_52:
-	case PCI_DEVICE_ID_LSI_CUTLASS_53:
-	case PCI_DEVICE_ID_LSI_FURY:
-		instance->adapter_type = INVADER_SERIES;
-		break;
-	default: /* For all other supported controllers */
+	if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
+	    (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
 		instance->adapter_type = MFI_SERIES;
-		break;
+	} else {
+		switch (instance->pdev->device) {
+		case PCI_DEVICE_ID_LSI_VENTURA:
+		case PCI_DEVICE_ID_LSI_CRUSADER:
+		case PCI_DEVICE_ID_LSI_HARPOON:
+		case PCI_DEVICE_ID_LSI_TOMCAT:
+		case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
+		case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
+			instance->adapter_type = VENTURA_SERIES;
+			break;
+		case PCI_DEVICE_ID_LSI_FUSION:
+		case PCI_DEVICE_ID_LSI_PLASMA:
+			instance->adapter_type = THUNDERBOLT_SERIES;
+			break;
+		case PCI_DEVICE_ID_LSI_INVADER:
+		case PCI_DEVICE_ID_LSI_INTRUDER:
+		case PCI_DEVICE_ID_LSI_INTRUDER_24:
+		case PCI_DEVICE_ID_LSI_CUTLASS_52:
+		case PCI_DEVICE_ID_LSI_CUTLASS_53:
+		case PCI_DEVICE_ID_LSI_FURY:
+			instance->adapter_type = INVADER_SERIES;
+			break;
+		default: /* For all other supported controllers */
+			instance->adapter_type = MFI_SERIES;
+			break;
+		}
 	}
 }
 
-- 
2.14.1.dirty

[PATCH 03/19] megaraid_sas: replace instance->ctrl_context checks with instance->adapter_type

[Shivasharan S]

Increase Code readability. No Functional Change

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_base.c | 64 ++++++++++++++++++-------------
 1 file changed, 37 insertions(+), 27 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index eba627ccd041..001b075d0dd6 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -2024,7 +2024,7 @@ void megaraid_sas_kill_hba(struct megasas_instance *instance)
 	msleep(1000);
 	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
 		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
-		(instance->ctrl_context)) {
+		(instance->adapter_type != MFI_SERIES)) {
 		writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
 		/* Flush */
 		readl(&instance->reg_set->doorbell);
@@ -2495,7 +2495,8 @@ int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
 	dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
 	       instance->host->host_no);
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if ((instance->adapter_type != MFI_SERIES) &&
+	    !instance->mask_interrupts)
 		retval = megasas_issue_blocked_cmd(instance, cmd,
 			MEGASAS_ROUTINE_WAIT_TIME_VF);
 	else
@@ -2791,7 +2792,9 @@ static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
 	/*
 	 * First wait for all commands to complete
 	 */
-	if (instance->ctrl_context) {
+	if (instance->adapter_type == MFI_SERIES) {
+		ret = megasas_generic_reset(scmd);
+	} else {
 		struct megasas_cmd_fusion *cmd;
 		cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
 		if (cmd)
@@ -2799,8 +2802,7 @@ static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
 				MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 		ret = megasas_reset_fusion(scmd->device->host,
 				SCSIIO_TIMEOUT_OCR);
-	} else
-		ret = megasas_generic_reset(scmd);
+	}
 
 	return ret;
 }
@@ -2817,7 +2819,7 @@ static int megasas_task_abort(struct scsi_cmnd *scmd)
 
 	instance = (struct megasas_instance *)scmd->device->host->hostdata;
 
-	if (instance->ctrl_context)
+	if (instance->adapter_type != MFI_SERIES)
 		ret = megasas_task_abort_fusion(scmd);
 	else {
 		sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
@@ -2839,7 +2841,7 @@ static int megasas_reset_target(struct scsi_cmnd *scmd)
 
 	instance = (struct megasas_instance *)scmd->device->host->hostdata;
 
-	if (instance->ctrl_context)
+	if (instance->adapter_type != MFI_SERIES)
 		ret = megasas_reset_target_fusion(scmd);
 	else {
 		sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
@@ -3716,7 +3718,7 @@ megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
 				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
 				(instance->pdev->device ==
 				 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
-				(instance->ctrl_context))
+				(instance->adapter_type != MFI_SERIES))
 				writel(
 				  MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
 				  &instance->reg_set->doorbell);
@@ -3734,7 +3736,7 @@ megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
 			     PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
 				(instance->pdev->device ==
 				 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
-				(instance->ctrl_context))
+				(instance->adapter_type != MFI_SERIES))
 				writel(MFI_INIT_HOTPLUG,
 				       &instance->reg_set->doorbell);
 			else
@@ -3754,11 +3756,11 @@ megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
 				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
 				(instance->pdev->device ==
 				PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
-				(instance->ctrl_context)) {
+				(instance->adapter_type != MFI_SERIES)) {
 				writel(MFI_RESET_FLAGS,
 					&instance->reg_set->doorbell);
 
-				if (instance->ctrl_context) {
+				if (instance->adapter_type != MFI_SERIES) {
 					for (i = 0; i < (10 * 1000); i += 20) {
 						if (readl(
 							    &instance->
@@ -3925,7 +3927,8 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
 	 * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
 	 * Total 192 byte (3 MFI frame of 64 byte)
 	 */
-	frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
+	frame_count = (instance->adapter_type == MFI_SERIES) ?
+			(15 + 1) : (3 + 1);
 	instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
 	/*
 	 * Use DMA pool facility provided by PCI layer
@@ -3980,7 +3983,7 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
 		memset(cmd->frame, 0, instance->mfi_frame_size);
 		cmd->frame->io.context = cpu_to_le32(cmd->index);
 		cmd->frame->io.pad_0 = 0;
-		if (!instance->ctrl_context && reset_devices)
+		if ((instance->adapter_type == MFI_SERIES) && reset_devices)
 			cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 	}
 
@@ -4100,7 +4103,7 @@ int megasas_alloc_cmds(struct megasas_instance *instance)
 inline int
 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
 
-	if (!instance->ctrl_context)
+	if (instance->adapter_type == MFI_SERIES)
 		return KILL_ADAPTER;
 	else if (instance->unload ||
 			test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
@@ -4144,7 +4147,8 @@ megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
 	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h);
 	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO));
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if ((instance->adapter_type != MFI_SERIES) &&
+	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
 	else
 		ret = megasas_issue_polled(instance, cmd);
@@ -4241,7 +4245,8 @@ megasas_get_pd_list(struct megasas_instance *instance)
 	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
 	dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if ((instance->adapter_type != MFI_SERIES) &&
+	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd,
 			MFI_IO_TIMEOUT_SECS);
 	else
@@ -4252,7 +4257,7 @@ megasas_get_pd_list(struct megasas_instance *instance)
 		dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
 			"failed/not supported by firmware\n");
 
-		if (instance->ctrl_context)
+		if (instance->adapter_type != MFI_SERIES)
 			megaraid_sas_kill_hba(instance);
 		else
 			instance->pd_list_not_supported = 1;
@@ -4373,7 +4378,8 @@ megasas_get_ld_list(struct megasas_instance *instance)
 	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
 	dcmd->pad_0  = 0;
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if ((instance->adapter_type != MFI_SERIES) &&
+	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd,
 			MFI_IO_TIMEOUT_SECS);
 	else
@@ -4492,7 +4498,8 @@ megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
 	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
 	dcmd->pad_0  = 0;
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if ((instance->adapter_type != MFI_SERIES) &&
+	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
 	else
 		ret = megasas_issue_polled(instance, cmd);
@@ -4665,7 +4672,8 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
 	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
 	dcmd->mbox.b[0] = 1;
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if ((instance->adapter_type != MFI_SERIES) &&
+	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
 	else
 		ret = megasas_issue_polled(instance, cmd);
@@ -4784,7 +4792,8 @@ int megasas_set_crash_dump_params(struct megasas_instance *instance,
 	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
 	dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if ((instance->adapter_type != MFI_SERIES) &&
+	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
 	else
 		ret = megasas_issue_polled(instance, cmd);
@@ -5171,7 +5180,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
 
 	reg_set = instance->reg_set;
 
-	if (fusion)
+	if (instance->adapter_type != MFI_SERIES)
 		instance->instancet = &megasas_instance_template_fusion;
 	else {
 		switch (instance->pdev->device) {
@@ -5806,7 +5815,8 @@ megasas_get_target_prop(struct megasas_instance *instance,
 	dcmd->sgl.sge32[0].length =
 		cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if ((instance->adapter_type != MFI_SERIES) &&
+	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance,
 						cmd, MFI_IO_TIMEOUT_SECS);
 	else
@@ -6193,7 +6203,7 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	instance->disableOnlineCtrlReset = 1;
 	instance->UnevenSpanSupport = 0;
 
-	if (instance->ctrl_context) {
+	if (instance->adapter_type != MFI_SERIES) {
 		INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
 		INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
 	} else
@@ -6273,7 +6283,7 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	instance->instancet->disable_intr(instance);
 	megasas_destroy_irqs(instance);
 
-	if (instance->ctrl_context)
+	if (instance->adapter_type != MFI_SERIES)
 		megasas_release_fusion(instance);
 	else
 		megasas_release_mfi(instance);
@@ -6507,7 +6517,7 @@ megasas_resume(struct pci_dev *pdev)
 	if (rval < 0)
 		goto fail_reenable_msix;
 
-	if (instance->ctrl_context) {
+	if (instance->adapter_type != MFI_SERIES) {
 		megasas_reset_reply_desc(instance);
 		if (megasas_ioc_init_fusion(instance)) {
 			megasas_free_cmds(instance);
@@ -6691,7 +6701,7 @@ static void megasas_detach_one(struct pci_dev *pdev)
 	}
 
 
-	if (instance->ctrl_context) {
+	if (instance->adapter_type != MFI_SERIES) {
 		megasas_release_fusion(instance);
 			pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
 				(sizeof(struct MR_PD_CFG_SEQ) *
-- 
2.14.1.dirty

[PATCH 04/19] megaraid_sas: Remove redundant checks for ctrl_context

[Shivasharan S]

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index cd997ccf5ebf..340079d0bff0 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -991,7 +991,7 @@ megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
 	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
 
 	/* Below code is only for non pended DCMD */
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if (!instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd,
 			MFI_IO_TIMEOUT_SECS);
 	else
@@ -1004,7 +1004,7 @@ megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
 		ret = -EINVAL;
 	}
 
-	if (ret == DCMD_TIMEOUT && instance->ctrl_context)
+	if (ret == DCMD_TIMEOUT)
 		megaraid_sas_kill_hba(instance);
 
 	if (ret == DCMD_SUCCESS)
@@ -1080,13 +1080,13 @@ megasas_get_ld_map_info(struct megasas_instance *instance)
 	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
 	dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
 
-	if (instance->ctrl_context && !instance->mask_interrupts)
+	if (!instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd,
 			MFI_IO_TIMEOUT_SECS);
 	else
 		ret = megasas_issue_polled(instance, cmd);
 
-	if (ret == DCMD_TIMEOUT && instance->ctrl_context)
+	if (ret == DCMD_TIMEOUT)
 		megaraid_sas_kill_hba(instance);
 
 	megasas_return_cmd(instance, cmd);
-- 
2.14.1.dirty

[PATCH 05/19] megaraid_sas: replace is_ventura with adapter_type checks

[Shivasharan S]

No functional change.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h        |  1 -
 drivers/scsi/megaraid/megaraid_sas_base.c   |  9 ++++-----
 drivers/scsi/megaraid/megaraid_sas_fp.c     | 10 +++++-----
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 26 +++++++++++++-------------
 4 files changed, 22 insertions(+), 24 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 3f20273b115b..5b36a0103895 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -2244,7 +2244,6 @@ struct megasas_instance {
 	bool dev_handle;
 	bool fw_sync_cache_support;
 	u32 mfi_frame_size;
-	bool is_ventura;
 	bool msix_combined;
 	u16 max_raid_mapsize;
 	/* preffered count to send as LDIO irrspective of FP capable.*/
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 001b075d0dd6..5691e031112e 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -5221,7 +5221,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
 			goto fail_ready_state;
 	}
 
-	if (instance->is_ventura) {
+	if (instance->adapter_type == VENTURA_SERIES) {
 		scratch_pad_3 =
 			readl(&instance->reg_set->outbound_scratch_pad_3);
 		instance->max_raid_mapsize = ((scratch_pad_3 >>
@@ -5330,7 +5330,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
 	if (instance->instancet->init_adapter(instance))
 		goto fail_init_adapter;
 
-	if (instance->is_ventura) {
+	if (instance->adapter_type == VENTURA_SERIES) {
 		scratch_pad_4 =
 			readl(&instance->reg_set->outbound_scratch_pad_4);
 		if ((scratch_pad_4 & MR_NVME_PAGE_SIZE_MASK) >=
@@ -5366,7 +5366,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
 	memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
 
 	/* stream detection initialization */
-	if (instance->is_ventura && fusion) {
+	if (instance->adapter_type == VENTURA_SERIES) {
 		fusion->stream_detect_by_ld =
 			kzalloc(sizeof(struct LD_STREAM_DETECT *)
 			* MAX_LOGICAL_DRIVES_EXT,
@@ -6101,7 +6101,6 @@ static int megasas_probe_one(struct pci_dev *pdev,
 
 		break;
 	case VENTURA_SERIES:
-		instance->is_ventura = 1;
 	case THUNDERBOLT_SERIES:
 	case INVADER_SERIES:
 		if (megasas_alloc_fusion_context(instance)) {
@@ -6693,7 +6692,7 @@ static void megasas_detach_one(struct pci_dev *pdev)
 	if (instance->msix_vectors)
 		pci_free_irq_vectors(instance->pdev);
 
-	if (instance->is_ventura) {
+	if (instance->adapter_type == VENTURA_SERIES) {
 		for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
 			kfree(fusion->stream_detect_by_ld[i]);
 		kfree(fusion->stream_detect_by_ld);
diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c
index 47af0e13b97a..bfad9bfc313f 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
@@ -737,7 +737,7 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
 		*pDevHandle = MR_PdDevHandleGet(pd, map);
 		*pPdInterface = MR_PdInterfaceTypeGet(pd, map);
 		/* get second pd also for raid 1/10 fast path writes*/
-		if (instance->is_ventura &&
+		if ((instance->adapter_type == VENTURA_SERIES) &&
 		    (raid->level == 1) &&
 		    !io_info->isRead) {
 			r1_alt_pd = MR_ArPdGet(arRef, physArm + 1, map);
@@ -762,7 +762,7 @@ static u8 mr_spanset_get_phy_params(struct megasas_instance *instance, u32 ld,
 	}
 
 	*pdBlock += stripRef + le64_to_cpu(MR_LdSpanPtrGet(ld, span, map)->startBlk);
-	if (instance->is_ventura) {
+	if (instance->adapter_type == VENTURA_SERIES) {
 		((struct RAID_CONTEXT_G35 *)pRAID_Context)->span_arm =
 			(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm;
 		io_info->span_arm =
@@ -853,7 +853,7 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
 		*pDevHandle = MR_PdDevHandleGet(pd, map);
 		*pPdInterface = MR_PdInterfaceTypeGet(pd, map);
 		/* get second pd also for raid 1/10 fast path writes*/
-		if (instance->is_ventura &&
+		if ((instance->adapter_type == VENTURA_SERIES) &&
 		    (raid->level == 1) &&
 		    !io_info->isRead) {
 			r1_alt_pd = MR_ArPdGet(arRef, physArm + 1, map);
@@ -880,7 +880,7 @@ u8 MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
 	}
 
 	*pdBlock += stripRef + le64_to_cpu(MR_LdSpanPtrGet(ld, span, map)->startBlk);
-	if (instance->is_ventura) {
+	if (instance->adapter_type == VENTURA_SERIES) {
 		((struct RAID_CONTEXT_G35 *)pRAID_Context)->span_arm =
 				(span << RAID_CTX_SPANARM_SPAN_SHIFT) | physArm;
 		io_info->span_arm =
@@ -1091,7 +1091,7 @@ MR_BuildRaidContext(struct megasas_instance *instance,
 	if (instance->adapter_type == INVADER_SERIES)
 		pRAID_Context->reg_lock_flags = (isRead) ?
 			raid->regTypeReqOnRead : raid->regTypeReqOnWrite;
-	else if (!instance->is_ventura)
+	else if (instance->adapter_type == THUNDERBOLT_SERIES)
 		pRAID_Context->reg_lock_flags = (isRead) ?
 			REGION_TYPE_SHARED_READ : raid->regTypeReqOnWrite;
 	pRAID_Context->virtual_disk_tgt_id = raid->targetId;
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 340079d0bff0..01d42eb6486b 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -200,7 +200,7 @@ static void
 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 		union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 {
-	if (instance->is_ventura)
+	if (instance->adapter_type == VENTURA_SERIES)
 		writel(le32_to_cpu(req_desc->u.low),
 			&instance->reg_set->inbound_single_queue_port);
 	else {
@@ -243,7 +243,7 @@ megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_c
 	reg_set = instance->reg_set;
 
 	/* ventura FW does not fill outbound_scratch_pad_3 with queue depth */
-	if (!instance->is_ventura)
+	if (instance->adapter_type < VENTURA_SERIES)
 		cur_max_fw_cmds =
 		readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF;
 
@@ -291,7 +291,7 @@ megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_c
 		instance->host->can_queue = instance->cur_can_queue;
 	}
 
-	if (instance->is_ventura)
+	if (instance->adapter_type == VENTURA_SERIES)
 		instance->max_mpt_cmds =
 		instance->max_fw_cmds * RAID_1_PEER_CMDS;
 	else
@@ -2363,7 +2363,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
 
 	praid_context = &io_request->RaidContext;
 
-	if (instance->is_ventura) {
+	if (instance->adapter_type == VENTURA_SERIES) {
 		spin_lock_irqsave(&instance->stream_lock, spinlock_flags);
 		megasas_stream_detect(instance, cmd, &io_info);
 		spin_unlock_irqrestore(&instance->stream_lock, spinlock_flags);
@@ -2429,7 +2429,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
 			io_request->RaidContext.raid_context.reg_lock_flags |=
 			  (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
 			   MR_RL_FLAGS_SEQ_NUM_ENABLE);
-		} else if (instance->is_ventura) {
+		} else if (instance->adapter_type == VENTURA_SERIES) {
 			io_request->RaidContext.raid_context_g35.nseg_type |=
 						(1 << RAID_CONTEXT_NSEG_SHIFT);
 			io_request->RaidContext.raid_context_g35.nseg_type |=
@@ -2448,7 +2448,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
 					&io_info, local_map_ptr);
 			scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
 			cmd->pd_r1_lb = io_info.pd_after_lb;
-			if (instance->is_ventura)
+			if (instance->adapter_type == VENTURA_SERIES)
 				io_request->RaidContext.raid_context_g35.span_arm
 					= io_info.span_arm;
 			else
@@ -2458,7 +2458,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
 		} else
 			scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
 
-		if (instance->is_ventura)
+		if (instance->adapter_type == VENTURA_SERIES)
 			cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
 		else
 			cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
@@ -2494,7 +2494,7 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
 				(MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
 				 MR_RL_FLAGS_SEQ_NUM_ENABLE);
 			io_request->RaidContext.raid_context.nseg = 0x1;
-		} else if (instance->is_ventura) {
+		} else if (instance->adapter_type == VENTURA_SERIES) {
 			io_request->RaidContext.raid_context_g35.routing_flags |=
 					(1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
 			io_request->RaidContext.raid_context_g35.nseg_type |=
@@ -2569,7 +2569,7 @@ static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
 
 		/* set RAID context values */
 		pRAID_Context->config_seq_num = raid->seqNum;
-		if (!instance->is_ventura)
+		if (instance->adapter_type != VENTURA_SERIES)
 			pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
 		pRAID_Context->timeout_value =
 			cpu_to_le16(raid->fpIoTimeoutForLd);
@@ -2654,7 +2654,7 @@ megasas_build_syspd_fusion(struct megasas_instance *instance,
 				cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
 		pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum;
 		io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
-		if (instance->is_ventura) {
+		if (instance->adapter_type == VENTURA_SERIES) {
 			io_request->RaidContext.raid_context_g35.routing_flags |=
 				(1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
 			io_request->RaidContext.raid_context_g35.nseg_type |=
@@ -2785,7 +2785,7 @@ megasas_build_io_fusion(struct megasas_instance *instance,
 		return 1;
 	}
 
-	if (instance->is_ventura) {
+	if (instance->adapter_type == VENTURA_SERIES) {
 		set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
 		cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
 		cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
@@ -4247,7 +4247,7 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
 		for (i = 0 ; i < instance->max_scsi_cmds; i++) {
 			cmd_fusion = fusion->cmd_list[i];
 			/*check for extra commands issued by driver*/
-			if (instance->is_ventura) {
+			if (instance->adapter_type == VENTURA_SERIES) {
 				r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
 				megasas_return_cmd_fusion(instance, r1_cmd);
 			}
@@ -4348,7 +4348,7 @@ int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
 				megasas_set_dynamic_target_properties(sdev);
 
 			/* reset stream detection array */
-			if (instance->is_ventura) {
+			if (instance->adapter_type == VENTURA_SERIES) {
 				for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
 					memset(fusion->stream_detect_by_ld[j],
 					0, sizeof(struct LD_STREAM_DETECT));
-- 
2.14.1.dirty

[PATCH 06/19] megaraid_sas: reduce size of fusion_context and use kmalloc for allocation

[Shivasharan S]

fusion_context structure is very large around 180kB
and most of the size is contributed by log_to_span
array. Move log_to_span out of fusion context and have
separate allocation for log_to_span. And use kmalloc
to allocate fusion_context.
Currently kmemleak reports 1000s of false positives for
fusion->cmd_list[]. kmemleak does not track page allocation
for fusion_context. This change will also fix the false positives
reported by kmemleak.

Ref: https://marc.info/?l=linux-scsi&m=150545293900917

Reported-by: Shu Wang <shuwang@redhat.com>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h        |  1 -
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 43 +++++++++++++++++++----------
 drivers/scsi/megaraid/megaraid_sas_fusion.h |  3 +-
 3 files changed, 31 insertions(+), 16 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 5b36a0103895..1f34577d8982 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -2218,7 +2218,6 @@ struct megasas_instance {
 
 	/* Ptr to hba specific information */
 	void *ctrl_context;
-	u32 ctrl_context_pages;
 	struct megasas_ctrl_info *ctrl_info;
 	unsigned int msix_vectors;
 	struct megasas_irq_context irq_context[MEGASAS_MAX_MSIX_QUEUES];
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 01d42eb6486b..a8055341e875 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -4502,20 +4502,31 @@ megasas_alloc_fusion_context(struct megasas_instance *instance)
 {
 	struct fusion_context *fusion;
 
-	instance->ctrl_context_pages = get_order(sizeof(struct fusion_context));
-	instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
-		instance->ctrl_context_pages);
+	instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
+					 GFP_KERNEL);
 	if (!instance->ctrl_context) {
-		/* fall back to using vmalloc for fusion_context */
-		instance->ctrl_context = vzalloc(sizeof(struct fusion_context));
-		if (!instance->ctrl_context) {
-			dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__);
-			return -ENOMEM;
-		}
+		dev_err(&instance->pdev->dev, "Failed from %s %d\n",
+			__func__, __LINE__);
+		return -ENOMEM;
 	}
 
 	fusion = instance->ctrl_context;
 
+	fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
+					      sizeof(LD_SPAN_INFO));
+	fusion->log_to_span =
+		(PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
+						fusion->log_to_span_pages);
+	if (!fusion->log_to_span) {
+		fusion->log_to_span = vzalloc(MAX_LOGICAL_DRIVES_EXT *
+					      sizeof(LD_SPAN_INFO));
+		if (!fusion->log_to_span) {
+			dev_err(&instance->pdev->dev, "Failed from %s %d\n",
+				__func__, __LINE__);
+			return -ENOMEM;
+		}
+	}
+
 	fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
 		sizeof(struct LD_LOAD_BALANCE_INFO));
 	fusion->load_balance_info =
@@ -4546,11 +4557,15 @@ megasas_free_fusion_context(struct megasas_instance *instance)
 					fusion->load_balance_info_pages);
 		}
 
-		if (is_vmalloc_addr(fusion))
-			vfree(fusion);
-		else
-			free_pages((ulong)fusion,
-				instance->ctrl_context_pages);
+		if (fusion->log_to_span) {
+			if (is_vmalloc_addr(fusion->log_to_span))
+				vfree(fusion->log_to_span);
+			else
+				free_pages((ulong)fusion->log_to_span,
+					   fusion->log_to_span_pages);
+		}
+
+		kfree(fusion);
 	}
 }
 
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 7c1f7ccf031d..a2b56913f382 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -1312,7 +1312,8 @@ struct fusion_context {
 	u8 fast_path_io;
 	struct LD_LOAD_BALANCE_INFO *load_balance_info;
 	u32 load_balance_info_pages;
-	LD_SPAN_INFO log_to_span[MAX_LOGICAL_DRIVES_EXT];
+	LD_SPAN_INFO *log_to_span;
+	u32 log_to_span_pages;
 	struct LD_STREAM_DETECT **stream_detect_by_ld;
 };
 
-- 
2.14.1.dirty

[PATCH 07/19] megaraid_sas: Create separate functions to allocate ctrl memory

[Shivasharan S]

No functional change. Code refactoring to improve readability.
Move the code to allocate and free controller memory into
separate functions.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_base.c | 122 +++++++++++++++++++-----------
 1 file changed, 76 insertions(+), 46 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 5691e031112e..53f01729c6a8 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -6023,6 +6023,75 @@ static inline void megasas_set_adapter_type(struct megasas_instance *instance)
 	}
 }
 
+static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
+{
+	instance->producer = pci_alloc_consistent(instance->pdev, sizeof(u32),
+						  &instance->producer_h);
+	instance->consumer = pci_alloc_consistent(instance->pdev, sizeof(u32),
+						  &instance->consumer_h);
+
+	if (!instance->producer || !instance->consumer) {
+		dev_err(&instance->pdev->dev,
+			"Failed to allocate memory for producer, consumer\n");
+		return -1;
+	}
+
+	*instance->producer = 0;
+	*instance->consumer = 0;
+	return 0;
+}
+
+/**
+ * megasas_alloc_ctrl_mem -	Allocate per controller memory for core data
+ *				structures which are not common across MFI
+ *				adapters and fusion adapters.
+ *				For MFI based adapters, allocate producer and
+ *				consumer buffers. For fusion adapters, allocate
+ *				memory for fusion context.
+ * @instance:			Adapter soft state
+ * return:			0 for SUCCESS
+ */
+static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
+{
+	switch (instance->adapter_type) {
+	case MFI_SERIES:
+		if (megasas_alloc_mfi_ctrl_mem(instance))
+			return -ENOMEM;
+		break;
+	case VENTURA_SERIES:
+	case THUNDERBOLT_SERIES:
+	case INVADER_SERIES:
+		if (megasas_alloc_fusion_context(instance))
+			return -ENOMEM;
+		break;
+	}
+
+	return 0;
+}
+
+/*
+ * megasas_free_ctrl_mem -	Free fusion context for fusion adapters and
+ *				producer, consumer buffers for MFI adapters
+ *
+ * @instance -			Adapter soft instance
+ *
+ */
+static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
+{
+	if (instance->adapter_type == MFI_SERIES) {
+		if (instance->producer)
+			pci_free_consistent(instance->pdev, sizeof(u32),
+					    instance->producer,
+					    instance->producer_h);
+		if (instance->consumer)
+			pci_free_consistent(instance->pdev, sizeof(u32),
+					    instance->consumer,
+					    instance->consumer_h);
+	} else {
+		megasas_free_fusion_context(instance);
+	}
+}
+
 /**
  * megasas_probe_one -	PCI hotplug entry point
  * @pdev:		PCI device structure
@@ -6081,33 +6150,8 @@ static int megasas_probe_one(struct pci_dev *pdev,
 
 	megasas_set_adapter_type(instance);
 
-	switch (instance->adapter_type) {
-	case MFI_SERIES:
-		instance->producer =
-			pci_alloc_consistent(pdev, sizeof(u32),
-					     &instance->producer_h);
-		instance->consumer =
-			pci_alloc_consistent(pdev, sizeof(u32),
-					     &instance->consumer_h);
-
-		if (!instance->producer || !instance->consumer) {
-			dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
-			       "memory for producer, consumer\n");
-			goto fail_alloc_dma_buf;
-		}
-
-		*instance->producer = 0;
-		*instance->consumer = 0;
-
-		break;
-	case VENTURA_SERIES:
-	case THUNDERBOLT_SERIES:
-	case INVADER_SERIES:
-		if (megasas_alloc_fusion_context(instance)) {
-			megasas_free_fusion_context(instance);
-			goto fail_alloc_dma_buf;
-		}
-	}
+	if (megasas_alloc_ctrl_mem(instance))
+		goto fail_alloc_dma_buf;
 
 	/* Crash dump feature related initialisation*/
 	instance->drv_buf_index = 0;
@@ -6303,12 +6347,7 @@ static int megasas_probe_one(struct pci_dev *pdev,
 		pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES),
 					instance->tgt_prop,
 					instance->tgt_prop_h);
-	if (instance->producer)
-		pci_free_consistent(pdev, sizeof(u32), instance->producer,
-				    instance->producer_h);
-	if (instance->consumer)
-		pci_free_consistent(pdev, sizeof(u32), instance->consumer,
-				    instance->consumer_h);
+	megasas_free_ctrl_mem(instance);
 	scsi_host_put(host);
 
 fail_alloc_instance:
@@ -6579,12 +6618,8 @@ megasas_resume(struct pci_dev *pdev)
 		pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES),
 					instance->tgt_prop,
 					instance->tgt_prop_h);
-	if (instance->producer)
-		pci_free_consistent(pdev, sizeof(u32), instance->producer,
-				instance->producer_h);
-	if (instance->consumer)
-		pci_free_consistent(pdev, sizeof(u32), instance->consumer,
-				instance->consumer_h);
+
+	megasas_free_ctrl_mem(instance);
 	scsi_host_put(host);
 
 fail_set_dma_mask:
@@ -6725,15 +6760,8 @@ static void megasas_detach_one(struct pci_dev *pdev)
 					fusion->pd_seq_sync[i],
 					fusion->pd_seq_phys[i]);
 		}
-		megasas_free_fusion_context(instance);
 	} else {
 		megasas_release_mfi(instance);
-		pci_free_consistent(pdev, sizeof(u32),
-				    instance->producer,
-				    instance->producer_h);
-		pci_free_consistent(pdev, sizeof(u32),
-				    instance->consumer,
-				    instance->consumer_h);
 	}
 
 	kfree(instance->ctrl_info);
@@ -6774,6 +6802,8 @@ static void megasas_detach_one(struct pci_dev *pdev)
 		pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
 				    instance->system_info_buf, instance->system_info_h);
 
+	megasas_free_ctrl_mem(instance);
+
 	scsi_host_put(host);
 
 	pci_disable_device(pdev);
-- 
2.14.1.dirty

[PATCH 08/19] megaraid_sas: Create separate functions for allocating and freeing controller DMA buffers

[Shivasharan S]

Code refactoring - create separate functions to allocate and free
controller DMA buffers

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_base.c | 186 +++++++++++++++++-------------
 1 file changed, 103 insertions(+), 83 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 53f01729c6a8..443819747c5d 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -6092,6 +6092,103 @@ static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
 	}
 }
 
+/**
+ * megasas_alloc_ctrl_dma_buffers -	Allocate consistent DMA buffers during
+ *					driver load time
+ *
+ * @instance-				Adapter soft instance
+ * @return-				O for SUCCESS
+ */
+static inline
+int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
+{
+	struct pci_dev *pdev = instance->pdev;
+
+	instance->evt_detail =
+		pci_alloc_consistent(pdev,
+				     sizeof(struct megasas_evt_detail),
+				     &instance->evt_detail_h);
+
+	if (!instance->evt_detail) {
+		dev_err(&instance->pdev->dev,
+			"Failed to allocate event detail buffer\n");
+		return -ENOMEM;
+	}
+
+	if (!reset_devices) {
+		instance->system_info_buf =
+			pci_alloc_consistent(pdev,
+					     sizeof(struct MR_DRV_SYSTEM_INFO),
+					     &instance->system_info_h);
+		instance->pd_info =
+			pci_alloc_consistent(pdev,
+					     sizeof(struct MR_PD_INFO),
+					     &instance->pd_info_h);
+		instance->tgt_prop =
+			pci_alloc_consistent(pdev,
+					     sizeof(struct MR_TARGET_PROPERTIES),
+					     &instance->tgt_prop_h);
+		instance->crash_dump_buf =
+			pci_alloc_consistent(pdev,
+					     CRASH_DMA_BUF_SIZE,
+					     &instance->crash_dump_h);
+
+		if (!instance->system_info_buf)
+			dev_err(&instance->pdev->dev,
+				"Failed to allocate system info buffer\n");
+
+		if (!instance->pd_info)
+			dev_err(&instance->pdev->dev,
+				"Failed to allocate pd_info buffer\n");
+
+		if (!instance->tgt_prop)
+			dev_err(&instance->pdev->dev,
+				"Failed to allocate tgt_prop buffer\n");
+
+		if (!instance->crash_dump_buf)
+			dev_err(&instance->pdev->dev,
+				"Failed to allocate crash dump buffer\n");
+	}
+
+	return 0;
+}
+
+/*
+ * megasas_free_ctrl_dma_buffers -	Free consistent DMA buffers allocated
+ *					during driver load time
+ *
+ * @instance-				Adapter soft instance
+ *
+ */
+static inline
+void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
+{
+	struct pci_dev *pdev = instance->pdev;
+
+	if (instance->evt_detail)
+		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
+				    instance->evt_detail,
+				    instance->evt_detail_h);
+
+	if (instance->system_info_buf)
+		pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
+				    instance->system_info_buf,
+				    instance->system_info_h);
+
+	if (instance->pd_info)
+		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
+				    instance->pd_info, instance->pd_info_h);
+
+	if (instance->tgt_prop)
+		pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES),
+				    instance->tgt_prop, instance->tgt_prop_h);
+
+	if (instance->crash_dump_buf)
+		pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
+				    instance->crash_dump_buf,
+				    instance->crash_dump_h);
+}
+
 /**
  * megasas_probe_one -	PCI hotplug entry point
  * @pdev:		PCI device structure
@@ -6153,6 +6250,9 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	if (megasas_alloc_ctrl_mem(instance))
 		goto fail_alloc_dma_buf;
 
+	if (megasas_alloc_ctrl_dma_buffers(instance))
+		goto fail_alloc_dma_buf;
+
 	/* Crash dump feature related initialisation*/
 	instance->drv_buf_index = 0;
 	instance->drv_buf_alloc = 0;
@@ -6169,44 +6269,6 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
 	instance->is_imr = 0;
 
-	instance->evt_detail = pci_alloc_consistent(pdev,
-						    sizeof(struct
-							   megasas_evt_detail),
-						    &instance->evt_detail_h);
-
-	if (!instance->evt_detail) {
-		dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for "
-		       "event detail structure\n");
-		goto fail_alloc_dma_buf;
-	}
-
-	if (!reset_devices) {
-		instance->system_info_buf = pci_zalloc_consistent(pdev,
-					sizeof(struct MR_DRV_SYSTEM_INFO),
-					&instance->system_info_h);
-		if (!instance->system_info_buf)
-			dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");
-
-		instance->pd_info = pci_alloc_consistent(pdev,
-			sizeof(struct MR_PD_INFO), &instance->pd_info_h);
-
-		if (!instance->pd_info)
-			dev_err(&instance->pdev->dev, "Failed to alloc mem for pd_info\n");
-
-		instance->tgt_prop = pci_alloc_consistent(pdev,
-			sizeof(struct MR_TARGET_PROPERTIES), &instance->tgt_prop_h);
-
-		if (!instance->tgt_prop)
-			dev_err(&instance->pdev->dev, "Failed to alloc mem for tgt_prop\n");
-
-		instance->crash_dump_buf = pci_alloc_consistent(pdev,
-						CRASH_DMA_BUF_SIZE,
-						&instance->crash_dump_h);
-		if (!instance->crash_dump_buf)
-			dev_err(&pdev->dev, "Can't allocate Firmware "
-				"crash dump DMA buffer\n");
-	}
-
 	/*
 	 * Initialize locks and queues
 	 */
@@ -6334,19 +6396,7 @@ static int megasas_probe_one(struct pci_dev *pdev,
 		pci_free_irq_vectors(instance->pdev);
 fail_init_mfi:
 fail_alloc_dma_buf:
-	if (instance->evt_detail)
-		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
-				    instance->evt_detail,
-				    instance->evt_detail_h);
-
-	if (instance->pd_info)
-		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
-					instance->pd_info,
-					instance->pd_info_h);
-	if (instance->tgt_prop)
-		pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES),
-					instance->tgt_prop,
-					instance->tgt_prop_h);
+	megasas_free_ctrl_dma_buffers(instance);
 	megasas_free_ctrl_mem(instance);
 	scsi_host_put(host);
 
@@ -6605,20 +6655,7 @@ megasas_resume(struct pci_dev *pdev)
 	return 0;
 
 fail_init_mfi:
-	if (instance->evt_detail)
-		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
-				instance->evt_detail,
-				instance->evt_detail_h);
-
-	if (instance->pd_info)
-		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
-					instance->pd_info,
-					instance->pd_info_h);
-	if (instance->tgt_prop)
-		pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES),
-					instance->tgt_prop,
-					instance->tgt_prop_h);
-
+	megasas_free_ctrl_dma_buffers(instance);
 	megasas_free_ctrl_mem(instance);
 	scsi_host_put(host);
 
@@ -6766,17 +6803,6 @@ static void megasas_detach_one(struct pci_dev *pdev)
 
 	kfree(instance->ctrl_info);
 
-	if (instance->evt_detail)
-		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
-				instance->evt_detail, instance->evt_detail_h);
-	if (instance->pd_info)
-		pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
-					instance->pd_info,
-					instance->pd_info_h);
-	if (instance->tgt_prop)
-		pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES),
-					instance->tgt_prop,
-					instance->tgt_prop_h);
 	if (instance->vf_affiliation)
 		pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
 				    sizeof(struct MR_LD_VF_AFFILIATION),
@@ -6794,13 +6820,7 @@ static void megasas_detach_one(struct pci_dev *pdev)
 				    instance->hb_host_mem,
 				    instance->hb_host_mem_h);
 
-	if (instance->crash_dump_buf)
-		pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
-			    instance->crash_dump_buf, instance->crash_dump_h);
-
-	if (instance->system_info_buf)
-		pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
-				    instance->system_info_buf, instance->system_info_h);
+	megasas_free_ctrl_dma_buffers(instance);
 
 	megasas_free_ctrl_mem(instance);
 
-- 
2.14.1.dirty

[PATCH 09/19] megaraid_sas: Pre-allocate frequently used DMA buffers

[Shivasharan S]

Pre-allocate few of the frequently used DMA buffers during load time.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h        |  13 +++
 drivers/scsi/megaraid/megaraid_sas_base.c   | 147 ++++++++++++++++++----------
 drivers/scsi/megaraid/megaraid_sas_fusion.c |  19 +---
 drivers/scsi/megaraid/megaraid_sas_fusion.h |   3 +
 4 files changed, 116 insertions(+), 66 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 1f34577d8982..80ba77b4b9e2 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -2122,6 +2122,19 @@ struct megasas_instance {
 
 	u32 *crash_dump_buf;
 	dma_addr_t crash_dump_h;
+
+	struct MR_PD_LIST *pd_list_buf;
+	dma_addr_t pd_list_buf_h;
+
+	struct megasas_ctrl_info *ctrl_info_buf;
+	dma_addr_t ctrl_info_buf_h;
+
+	struct MR_LD_LIST *ld_list_buf;
+	dma_addr_t ld_list_buf_h;
+
+	struct MR_LD_TARGETID_LIST *ld_targetid_list_buf;
+	dma_addr_t ld_targetid_list_buf_h;
+
 	void *crash_buf[MAX_CRASH_DUMP_SIZE];
 	unsigned int    fw_crash_buffer_size;
 	unsigned int    fw_crash_state;
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 443819747c5d..16a91ce2b2cb 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -4211,6 +4211,9 @@ megasas_get_pd_list(struct megasas_instance *instance)
 		return ret;
 	}
 
+	ci = instance->pd_list_buf;
+	ci_h = instance->pd_list_buf_h;
+
 	cmd = megasas_get_cmd(instance);
 
 	if (!cmd) {
@@ -4220,15 +4223,6 @@ megasas_get_pd_list(struct megasas_instance *instance)
 
 	dcmd = &cmd->frame->dcmd;
 
-	ci = pci_alloc_consistent(instance->pdev,
-		  MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
-
-	if (!ci) {
-		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n");
-		megasas_return_cmd(instance, cmd);
-		return -ENOMEM;
-	}
-
 	memset(ci, 0, sizeof(*ci));
 	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
 
@@ -4314,10 +4308,6 @@ megasas_get_pd_list(struct megasas_instance *instance)
 
 	}
 
-	pci_free_consistent(instance->pdev,
-				MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
-				ci, ci_h);
-
 	if (ret != DCMD_TIMEOUT)
 		megasas_return_cmd(instance, cmd);
 
@@ -4343,6 +4333,9 @@ megasas_get_ld_list(struct megasas_instance *instance)
 	dma_addr_t ci_h = 0;
 	u32 ld_count;
 
+	ci = instance->ld_list_buf;
+	ci_h = instance->ld_list_buf_h;
+
 	cmd = megasas_get_cmd(instance);
 
 	if (!cmd) {
@@ -4352,16 +4345,6 @@ megasas_get_ld_list(struct megasas_instance *instance)
 
 	dcmd = &cmd->frame->dcmd;
 
-	ci = pci_alloc_consistent(instance->pdev,
-				sizeof(struct MR_LD_LIST),
-				&ci_h);
-
-	if (!ci) {
-		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n");
-		megasas_return_cmd(instance, cmd);
-		return -ENOMEM;
-	}
-
 	memset(ci, 0, sizeof(*ci));
 	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
 
@@ -4433,8 +4416,6 @@ megasas_get_ld_list(struct megasas_instance *instance)
 		break;
 	}
 
-	pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h);
-
 	if (ret != DCMD_TIMEOUT)
 		megasas_return_cmd(instance, cmd);
 
@@ -4460,6 +4441,9 @@ megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
 	dma_addr_t ci_h = 0;
 	u32 tgtid_count;
 
+	ci = instance->ld_targetid_list_buf;
+	ci_h = instance->ld_targetid_list_buf_h;
+
 	cmd = megasas_get_cmd(instance);
 
 	if (!cmd) {
@@ -4470,16 +4454,6 @@ megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
 
 	dcmd = &cmd->frame->dcmd;
 
-	ci = pci_alloc_consistent(instance->pdev,
-				  sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
-
-	if (!ci) {
-		dev_warn(&instance->pdev->dev,
-		         "Failed to alloc mem for ld_list_query\n");
-		megasas_return_cmd(instance, cmd);
-		return -ENOMEM;
-	}
-
 	memset(ci, 0, sizeof(*ci));
 	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
 
@@ -4550,9 +4524,6 @@ megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
 		break;
 	}
 
-	pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
-		    ci, ci_h);
-
 	if (ret != DCMD_TIMEOUT)
 		megasas_return_cmd(instance, cmd);
 
@@ -4639,6 +4610,9 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
 
 	ctrl_info = instance->ctrl_info;
 
+	ci = instance->ctrl_info_buf;
+	ci_h = instance->ctrl_info_buf_h;
+
 	cmd = megasas_get_cmd(instance);
 
 	if (!cmd) {
@@ -4648,15 +4622,6 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
 
 	dcmd = &cmd->frame->dcmd;
 
-	ci = pci_alloc_consistent(instance->pdev,
-				  sizeof(struct megasas_ctrl_info), &ci_h);
-
-	if (!ci) {
-		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n");
-		megasas_return_cmd(instance, cmd);
-		return -ENOMEM;
-	}
-
 	memset(ci, 0, sizeof(*ci));
 	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
 
@@ -4738,9 +4703,6 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
 
 	}
 
-	pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
-			    ci, ci_h);
-
 	megasas_return_cmd(instance, cmd);
 
 
@@ -6103,6 +6065,7 @@ static inline
 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
 {
 	struct pci_dev *pdev = instance->pdev;
+	struct fusion_context *fusion = instance->ctrl_context;
 
 	instance->evt_detail =
 		pci_alloc_consistent(pdev,
@@ -6115,6 +6078,62 @@ int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
 		return -ENOMEM;
 	}
 
+	if (fusion) {
+		fusion->ioc_init_request =
+			dma_alloc_coherent(&pdev->dev,
+					   sizeof(struct MPI2_IOC_INIT_REQUEST),
+					   &fusion->ioc_init_request_phys,
+					   GFP_KERNEL);
+
+		if (!fusion->ioc_init_request) {
+			dev_err(&pdev->dev,
+				"Failed to allocate PD list buffer\n");
+			return -ENOMEM;
+		}
+	}
+
+	instance->pd_list_buf =
+		pci_alloc_consistent(pdev,
+				     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
+				     &instance->pd_list_buf_h);
+
+	if (!instance->pd_list_buf) {
+		dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
+		return -ENOMEM;
+	}
+
+	instance->ctrl_info_buf =
+		pci_alloc_consistent(pdev,
+				     sizeof(struct megasas_ctrl_info),
+				     &instance->ctrl_info_buf_h);
+
+	if (!instance->ctrl_info_buf) {
+		dev_err(&pdev->dev,
+			"Failed to allocate controller info buffer\n");
+		return -ENOMEM;
+	}
+
+	instance->ld_list_buf =
+		pci_alloc_consistent(pdev,
+				     sizeof(struct MR_LD_LIST),
+				     &instance->ld_list_buf_h);
+
+	if (!instance->ld_list_buf) {
+		dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
+		return -ENOMEM;
+	}
+
+	instance->ld_targetid_list_buf =
+		pci_alloc_consistent(pdev,
+				     sizeof(struct MR_LD_TARGETID_LIST),
+				     &instance->ld_targetid_list_buf_h);
+
+	if (!instance->ld_targetid_list_buf) {
+		dev_err(&pdev->dev,
+			"Failed to allocate LD targetid list buffer\n");
+		return -ENOMEM;
+	}
+
 	if (!reset_devices) {
 		instance->system_info_buf =
 			pci_alloc_consistent(pdev,
@@ -6164,12 +6183,40 @@ static inline
 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
 {
 	struct pci_dev *pdev = instance->pdev;
+	struct fusion_context *fusion = instance->ctrl_context;
 
 	if (instance->evt_detail)
 		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
 				    instance->evt_detail,
 				    instance->evt_detail_h);
 
+	if (fusion && fusion->ioc_init_request)
+		dma_free_coherent(&pdev->dev,
+				  sizeof(struct MPI2_IOC_INIT_REQUEST),
+				  fusion->ioc_init_request,
+				  fusion->ioc_init_request_phys);
+
+	if (instance->pd_list_buf)
+		pci_free_consistent(pdev,
+				    MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
+				    instance->pd_list_buf,
+				    instance->pd_list_buf_h);
+
+	if (instance->ld_list_buf)
+		pci_free_consistent(pdev, sizeof(struct MR_LD_LIST),
+				    instance->ld_list_buf,
+				    instance->ld_list_buf_h);
+
+	if (instance->ld_targetid_list_buf)
+		pci_free_consistent(pdev, sizeof(struct MR_LD_TARGETID_LIST),
+				    instance->ld_targetid_list_buf,
+				    instance->ld_targetid_list_buf_h);
+
+	if (instance->ctrl_info_buf)
+		pci_free_consistent(pdev, sizeof(struct megasas_ctrl_info),
+				    instance->ctrl_info_buf,
+				    instance->ctrl_info_buf_h);
+
 	if (instance->system_info_buf)
 		pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
 				    instance->system_info_buf,
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index a8055341e875..a630a31aecf8 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -776,6 +776,9 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 
 	fusion = instance->ctrl_context;
 
+	ioc_init_handle = fusion->ioc_init_request_phys;
+	IOCInitMessage = fusion->ioc_init_request;
+
 	cmd = megasas_get_cmd(instance);
 
 	if (!cmd) {
@@ -801,18 +804,6 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
 		 instance->fw_sync_cache_support ? "Yes" : "No");
 
-	IOCInitMessage =
-	  dma_alloc_coherent(&instance->pdev->dev,
-			     sizeof(struct MPI2_IOC_INIT_REQUEST),
-			     &ioc_init_handle, GFP_KERNEL);
-
-	if (!IOCInitMessage) {
-		dev_err(&instance->pdev->dev, "Could not allocate memory for "
-		       "IOCInitMessage\n");
-		ret = 1;
-		goto fail_fw_init;
-	}
-
 	memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
 
 	IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
@@ -921,10 +912,6 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 
 fail_fw_init:
 	megasas_return_cmd(instance, cmd);
-	if (IOCInitMessage)
-		dma_free_coherent(&instance->pdev->dev,
-				  sizeof(struct MPI2_IOC_INIT_REQUEST),
-				  IOCInitMessage, ioc_init_handle);
 fail_get_cmd:
 	dev_err(&instance->pdev->dev,
 		"Init cmd return status %s for SCSI host %d\n",
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index a2b56913f382..5b3f1dba1ab2 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -1315,6 +1315,9 @@ struct fusion_context {
 	LD_SPAN_INFO *log_to_span;
 	u32 log_to_span_pages;
 	struct LD_STREAM_DETECT **stream_detect_by_ld;
+	dma_addr_t ioc_init_request_phys;
+	struct MPI2_IOC_INIT_REQUEST *ioc_init_request;
+
 };
 
 union desc_value {
-- 
2.14.1.dirty

[PATCH 10/19] megaraid_sas: remove instance->ctrl_info

[Shivasharan S]

Re-use the pre-allocated ctrl_info DMA buffer.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h      |  1 -
 drivers/scsi/megaraid/megaraid_sas_base.c | 43 ++++++++++---------------------
 2 files changed, 14 insertions(+), 30 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 80ba77b4b9e2..83427b541629 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -2231,7 +2231,6 @@ struct megasas_instance {
 
 	/* Ptr to hba specific information */
 	void *ctrl_context;
-	struct megasas_ctrl_info *ctrl_info;
 	unsigned int msix_vectors;
 	struct megasas_irq_context irq_context[MEGASAS_MAX_MSIX_QUEUES];
 	u64 map_id;
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 16a91ce2b2cb..2a68c75b7c4e 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -4545,9 +4545,9 @@ static void megasas_update_ext_vd_details(struct megasas_instance *instance)
 		return;
 
 	instance->supportmax256vd =
-		instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
+		instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
 	/* Below is additional check to address future FW enhancement */
-	if (instance->ctrl_info->max_lds > 64)
+	if (instance->ctrl_info_buf->max_lds > 64)
 		instance->supportmax256vd = 1;
 
 	instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
@@ -4605,11 +4605,8 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
 	struct megasas_cmd *cmd;
 	struct megasas_dcmd_frame *dcmd;
 	struct megasas_ctrl_info *ci;
-	struct megasas_ctrl_info *ctrl_info;
 	dma_addr_t ci_h = 0;
 
-	ctrl_info = instance->ctrl_info;
-
 	ci = instance->ctrl_info_buf;
 	ci_h = instance->ctrl_info_buf_h;
 
@@ -4645,14 +4642,13 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
 
 	switch (ret) {
 	case DCMD_SUCCESS:
-		memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
 		/* Save required controller information in
 		 * CPU endianness format.
 		 */
-		le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
-		le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
-		le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
-		le16_to_cpus((u16 *)&ctrl_info->adapter_operations4);
+		le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
+		le32_to_cpus((u32 *)&ci->adapterOperations2);
+		le32_to_cpus((u32 *)&ci->adapterOperations3);
+		le16_to_cpus((u16 *)&ci->adapter_operations4);
 
 		/* Update the latest Ext VD info.
 		 * From Init path, store current firmware details.
@@ -4661,21 +4657,21 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
 		 */
 		megasas_update_ext_vd_details(instance);
 		instance->use_seqnum_jbod_fp =
-			ctrl_info->adapterOperations3.useSeqNumJbodFP;
+			ci->adapterOperations3.useSeqNumJbodFP;
 		instance->support_morethan256jbod =
-			ctrl_info->adapter_operations4.support_pd_map_target_id;
+			ci->adapter_operations4.support_pd_map_target_id;
 
 		/*Check whether controller is iMR or MR */
-		instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
+		instance->is_imr = (ci->memory_size ? 0 : 1);
 		dev_info(&instance->pdev->dev,
 			"controller type\t: %s(%dMB)\n",
 			instance->is_imr ? "iMR" : "MR",
-			le16_to_cpu(ctrl_info->memory_size));
+			le16_to_cpu(ci->memory_size));
 
 		instance->disableOnlineCtrlReset =
-			ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
+			ci->properties.OnOffProperties.disableOnlineCtrlReset;
 		instance->secure_jbod_support =
-			ctrl_info->adapterOperations3.supportSecurityonJBOD;
+			ci->adapterOperations3.supportSecurityonJBOD;
 		dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
 			instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
 		dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
@@ -5063,7 +5059,7 @@ megasas_setup_jbod_map(struct megasas_instance *instance)
 		(sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
 
 	if (reset_devices || !fusion ||
-		!instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) {
+		!instance->ctrl_info_buf->adapterOperations3.useSeqNumJbodFP) {
 		dev_info(&instance->pdev->dev,
 			"Jbod map is not supported %s %d\n",
 			__func__, __LINE__);
@@ -5277,11 +5273,6 @@ static int megasas_init_fw(struct megasas_instance *instance)
 	tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
 		(unsigned long)instance);
 
-	instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
-				GFP_KERNEL);
-	if (instance->ctrl_info == NULL)
-		goto fail_init_adapter;
-
 	/*
 	 * Below are default value for legacy Firmware.
 	 * non-fusion based controllers
@@ -5370,7 +5361,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
 	 * to calculate max_sectors_1. So the number ended up as zero always.
 	 */
 	tmp_sectors = 0;
-	ctrl_info = instance->ctrl_info;
+	ctrl_info = instance->ctrl_info_buf;
 
 	max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
 		le16_to_cpu(ctrl_info->max_strips_per_io);
@@ -5485,8 +5476,6 @@ static int megasas_init_fw(struct megasas_instance *instance)
 		pci_free_irq_vectors(instance->pdev);
 	instance->msix_vectors = 0;
 fail_ready_state:
-	kfree(instance->ctrl_info);
-	instance->ctrl_info = NULL;
 	iounmap(instance->reg_set);
 
 fail_ioremap:
@@ -6341,8 +6330,6 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	instance->host = host;
 	instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
 	instance->init_id = MEGASAS_DEFAULT_INIT_ID;
-	instance->ctrl_info = NULL;
-
 
 	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
 		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
@@ -6848,8 +6835,6 @@ static void megasas_detach_one(struct pci_dev *pdev)
 		megasas_release_mfi(instance);
 	}
 
-	kfree(instance->ctrl_info);
-
 	if (instance->vf_affiliation)
 		pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
 				    sizeof(struct MR_LD_VF_AFFILIATION),
-- 
2.14.1.dirty

[PATCH 11/19] megaraid_sas: Move initialization of instance parameters inside newly created function megasas_init_ctrl_params

[Shivasharan S]

Code refactoring, no functional change - Create new function to initialize
all the controller parameters during load time.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_base.c | 119 +++++++++++++++---------------
 1 file changed, 61 insertions(+), 58 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 2a68c75b7c4e..86cceb48ba84 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -6225,6 +6225,59 @@ void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
 				    instance->crash_dump_h);
 }
 
+/*
+ * megasas_init_ctrl_params -		Initialize controller's instance
+ *					parameters before FW init
+ * @instance -				Adapter soft instance
+ * @return -				void
+ */
+static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
+{
+	instance->fw_crash_state = UNAVAILABLE;
+
+	megasas_poll_wait_aen = 0;
+	instance->issuepend_done = 1;
+	atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
+
+	/*
+	 * Initialize locks and queues
+	 */
+	INIT_LIST_HEAD(&instance->cmd_pool);
+	INIT_LIST_HEAD(&instance->internal_reset_pending_q);
+
+	atomic_set(&instance->fw_outstanding, 0);
+
+	init_waitqueue_head(&instance->int_cmd_wait_q);
+	init_waitqueue_head(&instance->abort_cmd_wait_q);
+
+	spin_lock_init(&instance->crashdump_lock);
+	spin_lock_init(&instance->mfi_pool_lock);
+	spin_lock_init(&instance->hba_lock);
+	spin_lock_init(&instance->stream_lock);
+	spin_lock_init(&instance->completion_lock);
+
+	mutex_init(&instance->hba_mutex);
+	mutex_init(&instance->reset_mutex);
+
+	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
+	    (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
+		instance->flag_ieee = 1;
+
+	megasas_dbg_lvl = 0;
+	instance->flag = 0;
+	instance->unload = 1;
+	instance->last_time = 0;
+	instance->disableOnlineCtrlReset = 1;
+	instance->UnevenSpanSupport = 0;
+
+	if (instance->adapter_type != MFI_SERIES) {
+		INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
+		INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
+	} else {
+		INIT_WORK(&instance->work_init, process_fw_state_change_wq);
+	}
+}
+
 /**
  * megasas_probe_one -	PCI hotplug entry point
  * @pdev:		PCI device structure
@@ -6279,74 +6332,24 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	instance = (struct megasas_instance *)host->hostdata;
 	memset(instance, 0, sizeof(*instance));
 	atomic_set(&instance->fw_reset_no_pci_access, 0);
-	instance->pdev = pdev;
-
-	megasas_set_adapter_type(instance);
-
-	if (megasas_alloc_ctrl_mem(instance))
-		goto fail_alloc_dma_buf;
-
-	if (megasas_alloc_ctrl_dma_buffers(instance))
-		goto fail_alloc_dma_buf;
-
-	/* Crash dump feature related initialisation*/
-	instance->drv_buf_index = 0;
-	instance->drv_buf_alloc = 0;
-	instance->crash_dump_fw_support = 0;
-	instance->crash_dump_app_support = 0;
-	instance->fw_crash_state = UNAVAILABLE;
-	spin_lock_init(&instance->crashdump_lock);
-	instance->crash_dump_buf = NULL;
-
-	megasas_poll_wait_aen = 0;
-	instance->flag_ieee = 0;
-	instance->ev = NULL;
-	instance->issuepend_done = 1;
-	atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
-	instance->is_imr = 0;
-
-	/*
-	 * Initialize locks and queues
-	 */
-	INIT_LIST_HEAD(&instance->cmd_pool);
-	INIT_LIST_HEAD(&instance->internal_reset_pending_q);
-
-	atomic_set(&instance->fw_outstanding,0);
-
-	init_waitqueue_head(&instance->int_cmd_wait_q);
-	init_waitqueue_head(&instance->abort_cmd_wait_q);
-
-	spin_lock_init(&instance->mfi_pool_lock);
-	spin_lock_init(&instance->hba_lock);
-	spin_lock_init(&instance->stream_lock);
-	spin_lock_init(&instance->completion_lock);
-
-	mutex_init(&instance->reset_mutex);
-	mutex_init(&instance->hba_mutex);
 
 	/*
 	 * Initialize PCI related and misc parameters
 	 */
+	instance->pdev = pdev;
 	instance->host = host;
 	instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
 	instance->init_id = MEGASAS_DEFAULT_INIT_ID;
 
-	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
-		instance->flag_ieee = 1;
+	megasas_set_adapter_type(instance);
 
-	megasas_dbg_lvl = 0;
-	instance->flag = 0;
-	instance->unload = 1;
-	instance->last_time = 0;
-	instance->disableOnlineCtrlReset = 1;
-	instance->UnevenSpanSupport = 0;
+	megasas_init_ctrl_params(instance);
 
-	if (instance->adapter_type != MFI_SERIES) {
-		INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
-		INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
-	} else
-		INIT_WORK(&instance->work_init, process_fw_state_change_wq);
+	if (megasas_alloc_ctrl_mem(instance))
+		goto fail_alloc_dma_buf;
+
+	if (megasas_alloc_ctrl_dma_buffers(instance))
+		goto fail_alloc_dma_buf;
 
 	/*
 	 * Initialize MFI Firmware
-- 
2.14.1.dirty

[PATCH 12/19] megaraid_sas: Move controller memory allocations and DMA mask settings from probe to megasas_init_fw

[Shivasharan S]

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_base.c | 43 ++++++++++++++++++++-----------
 1 file changed, 28 insertions(+), 15 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 86cceb48ba84..3a179c3fabc0 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -206,6 +206,18 @@ wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 void megasas_fusion_ocr_wq(struct work_struct *work);
 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 					 int initial);
+static int
+megasas_set_dma_mask(struct pci_dev *pdev);
+static int
+megasas_alloc_ctrl_mem(struct megasas_instance *instance);
+static inline void
+megasas_free_ctrl_mem(struct megasas_instance *instance);
+static inline int
+megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
+static inline void
+megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
+static inline void
+megasas_init_ctrl_params(struct megasas_instance *instance);
 
 void
 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
@@ -5179,6 +5191,19 @@ static int megasas_init_fw(struct megasas_instance *instance)
 			goto fail_ready_state;
 	}
 
+	megasas_init_ctrl_params(instance);
+
+	if (megasas_set_dma_mask(instance->pdev))
+		goto fail_ready_state;
+
+	if (megasas_alloc_ctrl_mem(instance))
+		goto fail_alloc_dma_buf;
+
+	if (megasas_alloc_ctrl_dma_buffers(instance))
+		goto fail_alloc_dma_buf;
+
+	fusion = instance->ctrl_context;
+
 	if (instance->adapter_type == VENTURA_SERIES) {
 		scratch_pad_3 =
 			readl(&instance->reg_set->outbound_scratch_pad_3);
@@ -5475,6 +5500,9 @@ static int megasas_init_fw(struct megasas_instance *instance)
 	if (instance->msix_vectors)
 		pci_free_irq_vectors(instance->pdev);
 	instance->msix_vectors = 0;
+fail_alloc_dma_buf:
+	megasas_free_ctrl_dma_buffers(instance);
+	megasas_free_ctrl_mem(instance);
 fail_ready_state:
 	iounmap(instance->reg_set);
 
@@ -6318,9 +6346,6 @@ static int megasas_probe_one(struct pci_dev *pdev,
 
 	pci_set_master(pdev);
 
-	if (megasas_set_dma_mask(pdev))
-		goto fail_set_dma_mask;
-
 	host = scsi_host_alloc(&megasas_template,
 			       sizeof(struct megasas_instance));
 
@@ -6343,14 +6368,6 @@ static int megasas_probe_one(struct pci_dev *pdev,
 
 	megasas_set_adapter_type(instance);
 
-	megasas_init_ctrl_params(instance);
-
-	if (megasas_alloc_ctrl_mem(instance))
-		goto fail_alloc_dma_buf;
-
-	if (megasas_alloc_ctrl_dma_buffers(instance))
-		goto fail_alloc_dma_buf;
-
 	/*
 	 * Initialize MFI Firmware
 	 */
@@ -6432,13 +6449,9 @@ static int megasas_probe_one(struct pci_dev *pdev,
 	if (instance->msix_vectors)
 		pci_free_irq_vectors(instance->pdev);
 fail_init_mfi:
-fail_alloc_dma_buf:
-	megasas_free_ctrl_dma_buffers(instance);
-	megasas_free_ctrl_mem(instance);
 	scsi_host_put(host);
 
 fail_alloc_instance:
-fail_set_dma_mask:
 	pci_disable_device(pdev);
 
 	return -ENODEV;
-- 
2.14.1.dirty

[PATCH 13/19] megaraid_sas: Update current host time to FW during IOC Init

[Shivasharan S]

Driver needs to send current host time to firmware during init.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index a630a31aecf8..277fd16305ee 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -773,6 +773,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	MFI_CAPABILITIES *drv_ops;
 	u32 scratch_pad_2;
 	unsigned long flags;
+	struct timeval tv;
 
 	fusion = instance->ctrl_context;
 
@@ -821,6 +822,12 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
 	IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
 	IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
+
+	do_gettimeofday(&tv);
+	/* Convert to milliseconds as per FW requirement */
+	IOCInitMessage->TimeStamp = cpu_to_le64((tv.tv_sec * 1000) +
+						(tv.tv_usec / 1000));
+
 	init_frame = (struct megasas_init_frame *)cmd->frame;
 	memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
 
-- 
2.14.1.dirty

[PATCH 14/19] megaraid_sas: Resize MFA frame used for IOC INIT to 4k

[Shivasharan S]

Older firmware version unconditionally pulls 4k frame for
IOC INIT MFA frame.
But driver allocates 1k or 4k max_chain_frame_sz based on FW capability.
During boot time, this results in DMA read errors.
Workaround fix in driver by allocating separate ioc_init frame of 4k size
to support older firmware.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Cc: stable@vger.kernel.org
---
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 65 +++++++++++++++++++++++++----
 drivers/scsi/megaraid/megaraid_sas_fusion.h |  2 +
 2 files changed, 58 insertions(+), 9 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 277fd16305ee..857bdbb0f79d 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -780,13 +780,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	ioc_init_handle = fusion->ioc_init_request_phys;
 	IOCInitMessage = fusion->ioc_init_request;
 
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd) {
-		dev_err(&instance->pdev->dev, "Could not allocate cmd for INIT Frame\n");
-		ret = 1;
-		goto fail_get_cmd;
-	}
+	cmd = fusion->ioc_init_cmd;
 
 	scratch_pad_2 = readl
 		(&instance->reg_set->outbound_scratch_pad_2);
@@ -918,8 +912,6 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	ret = 0;
 
 fail_fw_init:
-	megasas_return_cmd(instance, cmd);
-fail_get_cmd:
 	dev_err(&instance->pdev->dev,
 		"Init cmd return status %s for SCSI host %d\n",
 		ret ? "FAILED" : "SUCCESS", instance->host->host_no);
@@ -1333,6 +1325,56 @@ static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
 	return -ENOMEM;
 }
 
+static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
+{
+	struct fusion_context *fusion;
+	struct megasas_cmd *cmd;
+
+	fusion = instance->ctrl_context;
+
+	cmd = kmalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
+
+	if (!cmd) {
+		dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
+			__func__, __LINE__);
+		return -ENOMEM;
+	}
+
+	cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
+					IOC_INIT_FRAME_SIZE,
+					&cmd->frame_phys_addr, GFP_KERNEL);
+
+	if (!cmd->frame) {
+		dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
+			__func__, __LINE__);
+		kfree(cmd);
+		return -ENOMEM;
+	}
+
+	fusion->ioc_init_cmd = cmd;
+	return 0;
+}
+
+/**
+ * megasas_free_ioc_init_cmd -	Free IOC INIT command frame
+ * @instance:		Adapter soft state
+ */
+static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
+{
+	struct fusion_context *fusion;
+
+	fusion = instance->ctrl_context;
+
+	if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
+		dma_free_coherent(&instance->pdev->dev,
+				  IOC_INIT_FRAME_SIZE,
+				  fusion->ioc_init_cmd->frame,
+				  fusion->ioc_init_cmd->frame_phys_addr);
+
+	if (fusion->ioc_init_cmd)
+		kfree(fusion->ioc_init_cmd);
+}
+
 /**
  * megasas_init_adapter_fusion -	Initializes the FW
  * @instance:		Adapter soft state
@@ -1428,6 +1470,9 @@ megasas_init_adapter_fusion(struct megasas_instance *instance)
 				MEGASAS_FUSION_IOCTL_CMDS);
 	sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
 
+	if (megasas_alloc_ioc_init_frame(instance))
+		return 1;
+
 	/*
 	 * Allocate memory for descriptors
 	 * Create a pool of commands
@@ -1465,6 +1510,7 @@ megasas_init_adapter_fusion(struct megasas_instance *instance)
 fail_alloc_cmds:
 	megasas_free_cmds(instance);
 fail_alloc_mfi_cmds:
+	megasas_free_ioc_init_cmd(instance);
 	return 1;
 }
 
@@ -3383,6 +3429,7 @@ megasas_issue_dcmd_fusion(struct megasas_instance *instance,
 void
 megasas_release_fusion(struct megasas_instance *instance)
 {
+	megasas_free_ioc_init_cmd(instance);
 	megasas_free_cmds(instance);
 	megasas_free_cmds_fusion(instance);
 
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 5b3f1dba1ab2..549f86b2e871 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -103,6 +103,7 @@ enum MR_RAID_FLAGS_IO_SUB_TYPE {
 #define THRESHOLD_REPLY_COUNT 50
 #define RAID_1_PEER_CMDS 2
 #define JBOD_MAPS_COUNT	2
+#define IOC_INIT_FRAME_SIZE 4096
 
 /*
  * Raid Context structure which describes MegaRAID specific IO Parameters
@@ -1317,6 +1318,7 @@ struct fusion_context {
 	struct LD_STREAM_DETECT **stream_detect_by_ld;
 	dma_addr_t ioc_init_request_phys;
 	struct MPI2_IOC_INIT_REQUEST *ioc_init_request;
+	struct megasas_cmd *ioc_init_cmd;
 
 };
 
-- 
2.14.1.dirty

[PATCH 15/19] megaraid_sas: Incorrect processing of IOCTL frames for SMP/STP commands

[Shivasharan S]

Code fix - cmd->frame->dcmd.opcode will be valid only for MFI_CMD_DCMD
IOCTL frames. Currently driver check for cmd->frame->dcmd.opcode without
checking cmd type. Ensure we check dcmd opcode only for MFI_CMD_DCMD
commands. Separate handling of MFI_CMD_SMP/STP commands from
MFI_CMD_DCMD in completion path.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h      | 23 +++++++++++++----------
 drivers/scsi/megaraid/megaraid_sas_base.c | 22 ++++++++++++++++++----
 2 files changed, 31 insertions(+), 14 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 83427b541629..85ef8415640c 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -187,16 +187,19 @@
 /*
  * MFI command opcodes
  */
-#define MFI_CMD_INIT				0x00
-#define MFI_CMD_LD_READ				0x01
-#define MFI_CMD_LD_WRITE			0x02
-#define MFI_CMD_LD_SCSI_IO			0x03
-#define MFI_CMD_PD_SCSI_IO			0x04
-#define MFI_CMD_DCMD				0x05
-#define MFI_CMD_ABORT				0x06
-#define MFI_CMD_SMP				0x07
-#define MFI_CMD_STP				0x08
-#define MFI_CMD_INVALID				0xff
+enum MFI_CMD_OP {
+	MFI_CMD_INIT		= 0x0,
+	MFI_CMD_LD_READ		= 0x1,
+	MFI_CMD_LD_WRITE	= 0x2,
+	MFI_CMD_LD_SCSI_IO	= 0x3,
+	MFI_CMD_PD_SCSI_IO	= 0x4,
+	MFI_CMD_DCMD		= 0x5,
+	MFI_CMD_ABORT		= 0x6,
+	MFI_CMD_SMP		= 0x7,
+	MFI_CMD_STP		= 0x8,
+	MFI_CMD_OP_COUNT,
+	MFI_CMD_INVALID		= 0xff
+};
 
 #define MR_DCMD_CTRL_GET_INFO			0x01010000
 #define MR_DCMD_LD_GET_LIST			0x03010000
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 3a179c3fabc0..995d70a06cb7 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -3298,6 +3298,9 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 
 	case MFI_CMD_SMP:
 	case MFI_CMD_STP:
+		megasas_complete_int_cmd(instance, cmd);
+		break;
+
 	case MFI_CMD_DCMD:
 		opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
 		/* Check for LD map update */
@@ -3384,6 +3387,7 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 	default:
 		dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
 		       hdr->cmd);
+		megasas_complete_int_cmd(instance, cmd);
 		break;
 	}
 }
@@ -7017,7 +7021,7 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 	void *sense = NULL;
 	dma_addr_t sense_handle;
 	unsigned long *sense_ptr;
-	u32 opcode;
+	u32 opcode = 0;
 
 	memset(kbuff_arr, 0, sizeof(kbuff_arr));
 
@@ -7027,6 +7031,13 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 		return -EINVAL;
 	}
 
+	if (ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) {
+		dev_err(&instance->pdev->dev,
+			"Received invalid ioctl command 0x%x\n",
+			ioc->frame.hdr.cmd);
+		return -ENOTSUPP;
+	}
+
 	cmd = megasas_get_cmd(instance);
 	if (!cmd) {
 		dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
@@ -7045,7 +7056,9 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 	cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
 					       MFI_FRAME_SGL64 |
 					       MFI_FRAME_SENSE64));
-	opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
+
+	if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
+		opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
 
 	if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
 		if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
@@ -7127,8 +7140,9 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 	if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
 		cmd->sync_cmd = 0;
 		dev_err(&instance->pdev->dev,
-			"return -EBUSY from %s %d opcode 0x%x cmd->cmd_status_drv 0x%x\n",
-			__func__, __LINE__, opcode,	cmd->cmd_status_drv);
+			"return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
+			__func__, __LINE__, cmd->frame->hdr.cmd, opcode,
+			cmd->cmd_status_drv);
 		return -EBUSY;
 	}
 
-- 
2.14.1.dirty

[PATCH 16/19] megaraid_sas: Retry with reduced queue depth when alloc fails for higher QD

[Shivasharan S]

In certain cases, the host memory is limited and with FW supporting higher
queue depths there are increasing chances of IO request frame allocation
failures that we are seeing. In case of request frame allocation failures,
retry allocation with reduced queue depth (in steps of 64) to continue
to configure the controller with a reduced performance rather than failing
load.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 106 ++++++++++++++++++----------
 drivers/scsi/megaraid/megaraid_sas_fusion.h |   1 +
 2 files changed, 68 insertions(+), 39 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 857bdbb0f79d..8b7a08af275e 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -96,6 +96,8 @@ extern unsigned int resetwaittime;
 extern unsigned int dual_qdepth_disable;
 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
 static void megasas_free_reply_fusion(struct megasas_instance *instance);
+static inline
+void megasas_configure_queue_sizes(struct megasas_instance *instance);
 
 
 
@@ -254,8 +256,8 @@ megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_c
 			(instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
 
 	dev_info(&instance->pdev->dev,
-			"Current firmware maximum commands: %d\t LDIO threshold: %d\n",
-			cur_max_fw_cmds, ldio_threshold);
+		 "Current firmware supports maximum commands: %d\t LDIO thershold: %d\n",
+		 cur_max_fw_cmds, ldio_threshold);
 
 	if (fw_boot_context == OCR_CONTEXT) {
 		cur_max_fw_cmds = cur_max_fw_cmds - 1;
@@ -283,19 +285,7 @@ megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_c
 		* does not exceed max cmds that the FW can support
 		*/
 		instance->max_fw_cmds = instance->max_fw_cmds-1;
-
-		instance->max_scsi_cmds = instance->max_fw_cmds -
-				(MEGASAS_FUSION_INTERNAL_CMDS +
-				MEGASAS_FUSION_IOCTL_CMDS);
-		instance->cur_can_queue = instance->max_scsi_cmds;
-		instance->host->can_queue = instance->cur_can_queue;
 	}
-
-	if (instance->adapter_type == VENTURA_SERIES)
-		instance->max_mpt_cmds =
-		instance->max_fw_cmds * RAID_1_PEER_CMDS;
-	else
-		instance->max_mpt_cmds = instance->max_fw_cmds;
 }
 /**
  * megasas_free_cmds_fusion -	Free all the cmds in the free cmd pool
@@ -468,16 +458,7 @@ megasas_alloc_request_fusion(struct megasas_instance *instance)
 
 	fusion = instance->ctrl_context;
 
-	fusion->req_frames_desc =
-		dma_alloc_coherent(&instance->pdev->dev,
-			fusion->request_alloc_sz,
-			&fusion->req_frames_desc_phys, GFP_KERNEL);
-	if (!fusion->req_frames_desc) {
-		dev_err(&instance->pdev->dev,
-			"Failed from %s %d\n",  __func__, __LINE__);
-		return -ENOMEM;
-	}
-
+retry_alloc:
 	fusion->io_request_frames_pool =
 			dma_pool_create("mr_ioreq", &instance->pdev->dev,
 				fusion->io_frames_alloc_sz, 16, 0);
@@ -492,10 +473,28 @@ megasas_alloc_request_fusion(struct megasas_instance *instance)
 			dma_pool_alloc(fusion->io_request_frames_pool,
 				GFP_KERNEL, &fusion->io_request_frames_phys);
 	if (!fusion->io_request_frames) {
+		if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
+			instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
+			dma_pool_destroy(fusion->io_request_frames_pool);
+			megasas_configure_queue_sizes(instance);
+			goto retry_alloc;
+		} else {
+			dev_err(&instance->pdev->dev,
+				"Failed from %s %d\n",  __func__, __LINE__);
+			return -ENOMEM;
+		}
+	}
+
+	fusion->req_frames_desc =
+		dma_alloc_coherent(&instance->pdev->dev,
+				   fusion->request_alloc_sz,
+				   &fusion->req_frames_desc_phys, GFP_KERNEL);
+	if (!fusion->req_frames_desc) {
 		dev_err(&instance->pdev->dev,
 			"Failed from %s %d\n",  __func__, __LINE__);
 		return -ENOMEM;
 	}
+
 	return 0;
 }
 
@@ -664,9 +663,6 @@ megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 
 	fusion = instance->ctrl_context;
 
-	if (megasas_alloc_cmdlist_fusion(instance))
-		goto fail_exit;
-
 	if (megasas_alloc_request_fusion(instance))
 		goto fail_exit;
 
@@ -677,6 +673,11 @@ megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 		if (megasas_alloc_reply_fusion(instance))
 			goto fail_exit;
 
+	if (megasas_alloc_cmdlist_fusion(instance))
+		goto fail_exit;
+
+	dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
+		 instance->max_fw_cmds);
 
 	/* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 	io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
@@ -1325,6 +1326,44 @@ static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
 	return -ENOMEM;
 }
 
+/**
+ * megasas_configure_queue_sizes -	Calculate size of request desc queue,
+ *					reply desc queue,
+ *					IO request frame queue, set can_queue.
+ * @instance:				Adapter soft state
+ * @return:				void
+ */
+static inline
+void megasas_configure_queue_sizes(struct megasas_instance *instance)
+{
+	struct fusion_context *fusion;
+	u16 max_cmd;
+
+	fusion = instance->ctrl_context;
+	max_cmd = instance->max_fw_cmds;
+
+	if (instance->adapter_type == VENTURA_SERIES)
+		instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
+	else
+		instance->max_mpt_cmds = instance->max_fw_cmds;
+
+	instance->max_scsi_cmds = instance->max_fw_cmds -
+			(MEGASAS_FUSION_INTERNAL_CMDS +
+			MEGASAS_FUSION_IOCTL_CMDS);
+	instance->cur_can_queue = instance->max_scsi_cmds;
+	instance->host->can_queue = instance->cur_can_queue;
+
+	fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
+
+	fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
+					  instance->max_mpt_cmds;
+	fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
+					(fusion->reply_q_depth);
+	fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
+		(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
+		 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
+}
+
 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
 {
 	struct fusion_context *fusion;
@@ -1386,7 +1425,6 @@ megasas_init_adapter_fusion(struct megasas_instance *instance)
 {
 	struct megasas_register_set __iomem *reg_set;
 	struct fusion_context *fusion;
-	u16 max_cmd;
 	u32 scratch_pad_2;
 	int i = 0, count;
 
@@ -1402,17 +1440,7 @@ megasas_init_adapter_fusion(struct megasas_instance *instance)
 	instance->max_mfi_cmds =
 		MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
 
-	max_cmd = instance->max_fw_cmds;
-
-	fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
-
-	fusion->request_alloc_sz =
-	sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * instance->max_mpt_cmds;
-	fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
-		*(fusion->reply_q_depth);
-	fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
-		(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
-		* (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
+	megasas_configure_queue_sizes(instance);
 
 	scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2);
 	/* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 549f86b2e871..4e229d72dfb0 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -103,6 +103,7 @@ enum MR_RAID_FLAGS_IO_SUB_TYPE {
 #define THRESHOLD_REPLY_COUNT 50
 #define RAID_1_PEER_CMDS 2
 #define JBOD_MAPS_COUNT	2
+#define MEGASAS_REDUCE_QD_COUNT 64
 #define IOC_INIT_FRAME_SIZE 4096
 
 /*
-- 
2.14.1.dirty

[PATCH 17/19] megaraid_sas: Do not limit queue_depth to 1k in non-RDPQ mode

[Shivasharan S]

Earlier, driver load fails if memory allocation for request frame pool
fails due to the higher queue_depth requirement. Patch 0016 in this
series allows dynamically reducing queue_depth if memory allocations
fail rather than failing load.
With this, there is no need to limit queue_depth to 1k now.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 8b7a08af275e..745da54c11aa 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -272,10 +272,6 @@ megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_c
 		instance->max_fw_cmds = cur_max_fw_cmds;
 		instance->ldio_threshold = ldio_threshold;
 
-		if (!instance->is_rdpq)
-			instance->max_fw_cmds =
-				min_t(u16, instance->max_fw_cmds, 1024);
-
 		if (reset_devices)
 			instance->max_fw_cmds = min(instance->max_fw_cmds,
 						(u16)MEGASAS_KDUMP_QUEUE_DEPTH);
-- 
2.14.1.dirty

[PATCH 18/19] megaraid_sas: Add support for 64bit consistent DMA

[Shivasharan S]

The latest MegaRAID Firmware (for Invader series) have support for
64bit DMA for both streaming and consistent DMA buffers.
All Ventura series controller FW always support 64 bit consistent DMA.
Also on few architectures 32bit DMA is not supported.

Current driver always prefers 32bit for consistent DMA and 64bit for
streaming DMA.
This behavior was unintentional and carried forwarded from legacy
controller FW. Need to enhance the driver to support 64bit consistent DMA
buffers based on the firmware capability.

Below is the DMA setting strategy in driver with this patch.
For Ventura series, always try to set 64bit DMA mask. If it fails
fall back to 32bit DMA mask.
For Invader series and earlier generation controllers, first try to set
to 32bit consistent DMA mask irrespective of FW capability. This is
needed to ensure firmware downgrades do not break. If 32bit DMA
setting fails, check FW capability and try seting to 64bit DMA mask.

There are certain restrictions in the hardware for having all sense
buffers and all reply descriptors to be in the same 4GB memory region.
This limitation is h/w dependent and can not be changed in firmware.
This limitation needs to be taken care in driver while allocating the
buffers.
There was a discussion regarding this - find details at below link.
https://www.spinics.net/lists/linux-scsi/msg108251.html

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h        |  12 +-
 drivers/scsi/megaraid/megaraid_sas_base.c   | 245 ++++++++++++------
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 384 ++++++++++++++++++++++------
 drivers/scsi/megaraid/megaraid_sas_fusion.h |  13 +
 4 files changed, 503 insertions(+), 151 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 85ef8415640c..b34fc68c14c9 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1508,6 +1508,8 @@ enum FW_BOOT_CONTEXT {
 
 #define MR_CAN_HANDLE_SYNC_CACHE_OFFSET		0X01000000
 
+#define MR_CAN_HANDLE_64_BIT_DMA_OFFSET		(1 << 25)
+
 enum MR_ADAPTER_TYPE {
 	MFI_SERIES = 1,
 	THUNDERBOLT_SERIES = 2,
@@ -1628,7 +1630,8 @@ union megasas_sgl_frame {
 typedef union _MFI_CAPABILITIES {
 	struct {
 #if   defined(__BIG_ENDIAN_BITFIELD)
-	u32     reserved:19;
+	u32     reserved:18;
+	u32     support_64bit_mode:1;
 	u32 support_pd_map_target_id:1;
 	u32     support_qd_throttling:1;
 	u32     support_fp_rlbypass:1;
@@ -1656,7 +1659,8 @@ typedef union _MFI_CAPABILITIES {
 	u32     support_fp_rlbypass:1;
 	u32     support_qd_throttling:1;
 	u32	support_pd_map_target_id:1;
-	u32     reserved:19;
+	u32     support_64bit_mode:1;
+	u32     reserved:18;
 #endif
 	} mfi_capabilities;
 	__le32		reg;
@@ -2264,6 +2268,7 @@ struct megasas_instance {
 	u8  r1_ldio_hint_default;
 	u32 nvme_page_size;
 	u8 adapter_type;
+	bool consistent_mask_64bit;
 };
 struct MR_LD_VF_MAP {
 	u32 size;
@@ -2510,4 +2515,7 @@ int megasas_reset_target_fusion(struct scsi_cmnd *scmd);
 u32 mega_mod64(u64 dividend, u32 divisor);
 int megasas_alloc_fusion_context(struct megasas_instance *instance);
 void megasas_free_fusion_context(struct megasas_instance *instance);
+void megasas_set_dma_settings(struct megasas_instance *instance,
+			      struct megasas_dcmd_frame *dcmd,
+			      dma_addr_t dma_addr, u32 dma_len);
 #endif				/*LSI_MEGARAID_SAS_H */
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 995d70a06cb7..3582ed5261dd 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -207,7 +207,7 @@ void megasas_fusion_ocr_wq(struct work_struct *work);
 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 					 int initial);
 static int
-megasas_set_dma_mask(struct pci_dev *pdev);
+megasas_set_dma_mask(struct megasas_instance *instance);
 static int
 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
 static inline void
@@ -219,6 +219,31 @@ megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
 static inline void
 megasas_init_ctrl_params(struct megasas_instance *instance);
 
+/**
+ * megasas_set_dma_settings -	Populate DMA address, length and flags for DCMDs
+ * @instance:			Adapter soft state
+ * @dcmd:			DCMD frame inside MFI command
+ * @dma_addr:			DMA address of buffer to be passed to FW
+ * @dma_len:			Length of DMA buffer to be passed to FW
+ * @return:			void
+ */
+void megasas_set_dma_settings(struct megasas_instance *instance,
+			      struct megasas_dcmd_frame *dcmd,
+			      dma_addr_t dma_addr, u32 dma_len)
+{
+	if (instance->consistent_mask_64bit) {
+		dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
+		dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
+		dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
+
+	} else {
+		dcmd->sgl.sge32[0].phys_addr =
+				cpu_to_le32(lower_32_bits(dma_addr));
+		dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
+		dcmd->flags = cpu_to_le16(dcmd->flags);
+	}
+}
+
 void
 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 {
@@ -2501,8 +2526,9 @@ int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
 	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
+
+	megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
+				 sizeof(struct MR_CTRL_HB_HOST_MEM));
 
 	dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
 	       instance->host->host_no);
@@ -4155,13 +4181,14 @@ megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = 0xFF;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
 	dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO));
+
+	megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
+				 sizeof(struct MR_PD_INFO));
 
 	if ((instance->adapter_type != MFI_SERIES) &&
 	    !instance->mask_interrupts)
@@ -4247,13 +4274,14 @@ megasas_get_pd_list(struct megasas_instance *instance)
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
 	dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
+
+	megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
+				 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
 
 	if ((instance->adapter_type != MFI_SERIES) &&
 	    !instance->mask_interrupts)
@@ -4369,14 +4397,15 @@ megasas_get_ld_list(struct megasas_instance *instance)
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
 	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
 	dcmd->pad_0  = 0;
 
+	megasas_set_dma_settings(instance, dcmd, ci_h,
+				 sizeof(struct MR_LD_LIST));
+
 	if ((instance->adapter_type != MFI_SERIES) &&
 	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd,
@@ -4480,14 +4509,15 @@ megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
 	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
 	dcmd->pad_0  = 0;
 
+	megasas_set_dma_settings(instance, dcmd, ci_h,
+				 sizeof(struct MR_LD_TARGETID_LIST));
+
 	if ((instance->adapter_type != MFI_SERIES) &&
 	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
@@ -4641,15 +4671,16 @@ megasas_get_ctrl_info(struct megasas_instance *instance)
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
 	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
 	dcmd->mbox.b[0] = 1;
 
+	megasas_set_dma_settings(instance, dcmd, ci_h,
+				 sizeof(struct megasas_ctrl_info));
+
 	if ((instance->adapter_type != MFI_SERIES) &&
 	    !instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
@@ -4758,13 +4789,14 @@ int megasas_set_crash_dump_params(struct megasas_instance *instance,
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
+	dcmd->flags = MFI_FRAME_DIR_NONE;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
 	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
+
+	megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
+				 CRASH_DMA_BUF_SIZE);
 
 	if ((instance->adapter_type != MFI_SERIES) &&
 	    !instance->mask_interrupts)
@@ -5197,7 +5229,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
 
 	megasas_init_ctrl_params(instance);
 
-	if (megasas_set_dma_mask(instance->pdev))
+	if (megasas_set_dma_mask(instance))
 		goto fail_ready_state;
 
 	if (megasas_alloc_ctrl_mem(instance))
@@ -5580,13 +5612,14 @@ megasas_get_seq_num(struct megasas_instance *instance,
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = 0x0;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
 	dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
+
+	megasas_set_dma_settings(instance, dcmd, el_info_h,
+				 sizeof(struct megasas_evt_log_info));
 
 	if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) ==
 		DCMD_SUCCESS) {
@@ -5711,7 +5744,7 @@ megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = 0x0;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
@@ -5719,8 +5752,9 @@ megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
 	dcmd->mbox.w[0] = cpu_to_le32(seq_num);
 	instance->last_seq_num = seq_num;
 	dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
+
+	megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
+				 sizeof(struct megasas_evt_detail));
 
 	if (instance->aen_cmd != NULL) {
 		megasas_return_cmd(instance, cmd);
@@ -5787,16 +5821,15 @@ megasas_get_target_prop(struct megasas_instance *instance,
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = 0xFF;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len =
 		cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
 	dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
-	dcmd->sgl.sge32[0].phys_addr =
-		cpu_to_le32(instance->tgt_prop_h);
-	dcmd->sgl.sge32[0].length =
-		cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
+
+	megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
+				 sizeof(struct MR_TARGET_PROPERTIES));
 
 	if ((instance->adapter_type != MFI_SERIES) &&
 	    !instance->mask_interrupts)
@@ -5924,40 +5957,73 @@ static int megasas_io_attach(struct megasas_instance *instance)
 	return 0;
 }
 
+/**
+ * megasas_set_dma_mask -	Set DMA mask for supported controllers
+ *
+ * @instance:		Adapter soft state
+ * Description:
+ *
+ * For Ventura, driver/FW will operate in 64bit DMA addresses.
+ *
+ * For invader-
+ *	By default, driver/FW will operate in 32bit DMA addresses
+ *	for consistent DMA mapping but if 32 bit consistent
+ *	DMA mask fails, driver will try with 64 bit consistent
+ *	mask provided FW is true 64bit DMA capable
+ *
+ * For older controllers(Thunderbolt and MFI based adapters)-
+ *	driver/FW will operate in 32 bit consistent DMA addresses.
+ */
 static int
-megasas_set_dma_mask(struct pci_dev *pdev)
+megasas_set_dma_mask(struct megasas_instance *instance)
 {
-	/*
-	 * All our controllers are capable of performing 64-bit DMA
-	 */
+	u64 consistent_mask;
+	struct pci_dev *pdev;
+	u32 scratch_pad_2;
+
+	pdev = instance->pdev;
+	consistent_mask = (instance->adapter_type == VENTURA_SERIES) ?
+				DMA_BIT_MASK(64) : DMA_BIT_MASK(32);
+
 	if (IS_DMA64) {
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
+		if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
+		    dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
+			goto fail_set_dma_mask;
+
+		if ((*pdev->dev.dma_mask == DMA_BIT_MASK(64)) &&
+		    (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
+		     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
+			/*
+			 * If 32 bit DMA mask fails, then try for 64 bit mask
+			 * for FW capable of handling 64 bit DMA.
+			 */
+			scratch_pad_2 = readl
+				(&instance->reg_set->outbound_scratch_pad_2);
 
-			if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
+			if (!(scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
+				goto fail_set_dma_mask;
+			else if (dma_set_mask_and_coherent(&pdev->dev,
+							   DMA_BIT_MASK(64)))
 				goto fail_set_dma_mask;
 		}
-	} else {
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
-			goto fail_set_dma_mask;
-	}
-	/*
-	 * Ensure that all data structures are allocated in 32-bit
-	 * memory.
-	 */
-	if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
-		/* Try 32bit DMA mask and 32 bit Consistent dma mask */
-		if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
-			&& !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
-			dev_info(&pdev->dev, "set 32bit DMA mask"
-				"and 32 bit consistent mask\n");
-		else
-			goto fail_set_dma_mask;
-	}
+	} else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
+		goto fail_set_dma_mask;
+
+	if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
+		instance->consistent_mask_64bit = false;
+	else
+		instance->consistent_mask_64bit = true;
+
+	dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
+		 ((*pdev->dev.dma_mask == DMA_BIT_MASK(64)) ? "64" : "32"),
+		 (instance->consistent_mask_64bit ? "64" : "32"));
 
 	return 0;
 
 fail_set_dma_mask:
-	return 1;
+	dev_err(&pdev->dev, "Failed to set DMA mask\n");
+	return -1;
+
 }
 
 /*
@@ -6632,7 +6698,13 @@ megasas_resume(struct pci_dev *pdev)
 
 	pci_set_master(pdev);
 
-	if (megasas_set_dma_mask(pdev))
+	/*
+	 * We expect the FW state to be READY
+	 */
+	if (megasas_transition_to_ready(instance, 0))
+		goto fail_ready_state;
+
+	if (megasas_set_dma_mask(instance))
 		goto fail_set_dma_mask;
 
 	/*
@@ -6641,12 +6713,6 @@ megasas_resume(struct pci_dev *pdev)
 
 	atomic_set(&instance->fw_outstanding, 0);
 
-	/*
-	 * We expect the FW state to be READY
-	 */
-	if (megasas_transition_to_ready(instance, 0))
-		goto fail_ready_state;
-
 	/* Now re-enable MSI-X */
 	if (instance->msix_vectors) {
 		irq_flags = PCI_IRQ_MSIX;
@@ -6713,9 +6779,9 @@ megasas_resume(struct pci_dev *pdev)
 	megasas_free_ctrl_mem(instance);
 	scsi_host_put(host);
 
+fail_reenable_msix:
 fail_set_dma_mask:
 fail_ready_state:
-fail_reenable_msix:
 
 	pci_disable_device(pdev);
 
@@ -7013,7 +7079,8 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 		      struct megasas_iocpacket __user * user_ioc,
 		      struct megasas_iocpacket *ioc)
 {
-	struct megasas_sge32 *kern_sge32;
+	struct megasas_sge64 *kern_sge64 = NULL;
+	struct megasas_sge32 *kern_sge32 = NULL;
 	struct megasas_cmd *cmd;
 	void *kbuff_arr[MAX_IOCTL_SGE];
 	dma_addr_t buf_handle = 0;
@@ -7053,8 +7120,14 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 	memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
 	cmd->frame->hdr.context = cpu_to_le32(cmd->index);
 	cmd->frame->hdr.pad_0 = 0;
-	cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
-					       MFI_FRAME_SGL64 |
+
+	cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
+
+	if (instance->consistent_mask_64bit)
+		cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
+				       MFI_FRAME_SENSE64));
+	else
+		cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
 					       MFI_FRAME_SENSE64));
 
 	if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
@@ -7081,8 +7154,12 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 	 * kernel buffers in SGLs. The location of SGL is embedded in the
 	 * struct iocpacket itself.
 	 */
-	kern_sge32 = (struct megasas_sge32 *)
-	    ((unsigned long)cmd->frame + ioc->sgl_off);
+	if (instance->consistent_mask_64bit)
+		kern_sge64 = (struct megasas_sge64 *)
+			((unsigned long)cmd->frame + ioc->sgl_off);
+	else
+		kern_sge32 = (struct megasas_sge32 *)
+			((unsigned long)cmd->frame + ioc->sgl_off);
 
 	/*
 	 * For each user buffer, create a mirror buffer and copy in
@@ -7105,8 +7182,13 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 		 * We don't change the dma_coherent_mask, so
 		 * pci_alloc_consistent only returns 32bit addresses
 		 */
-		kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
-		kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
+		if (instance->consistent_mask_64bit) {
+			kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
+			kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
+		} else {
+			kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
+			kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
+		}
 
 		/*
 		 * We created a kernel buffer corresponding to the
@@ -7129,7 +7211,10 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 
 		sense_ptr =
 		(unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
-		*sense_ptr = cpu_to_le32(sense_handle);
+		if (instance->consistent_mask_64bit)
+			*sense_ptr = cpu_to_le64(sense_handle);
+		else
+			*sense_ptr = cpu_to_le32(sense_handle);
 	}
 
 	/*
@@ -7202,10 +7287,16 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
 
 	for (i = 0; i < ioc->sge_count; i++) {
 		if (kbuff_arr[i]) {
-			dma_free_coherent(&instance->pdev->dev,
-					  le32_to_cpu(kern_sge32[i].length),
-					  kbuff_arr[i],
-					  le32_to_cpu(kern_sge32[i].phys_addr));
+			if (instance->consistent_mask_64bit)
+				dma_free_coherent(&instance->pdev->dev,
+					le32_to_cpu(kern_sge64[i].length),
+					kbuff_arr[i],
+					le64_to_cpu(kern_sge64[i].phys_addr));
+			else
+				dma_free_coherent(&instance->pdev->dev,
+					le32_to_cpu(kern_sge32[i].length),
+					kbuff_arr[i],
+					le32_to_cpu(kern_sge32[i].phys_addr));
 			kbuff_arr[i] = NULL;
 		}
 	}
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 745da54c11aa..fd86ae494fcb 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -99,7 +99,34 @@ static void megasas_free_reply_fusion(struct megasas_instance *instance);
 static inline
 void megasas_configure_queue_sizes(struct megasas_instance *instance);
 
+/**
+ * megasas_check_same_4gb_region -	check if allocation
+ *					crosses same 4GB boundary or not
+ * @instance -				adapter's soft instance
+ * start_addr -			start address of DMA allocation
+ * size -				size of allocation in bytes
+ * return -				true : allocation does not cross same
+ *					4GB boundary
+ *					false: allocation crosses same
+ *					4GB boundary
+ */
+static inline bool megasas_check_same_4gb_region
+	(struct megasas_instance *instance, dma_addr_t start_addr, size_t size)
+{
+	dma_addr_t end_addr;
+
+	end_addr = start_addr + size;
 
+	if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) {
+		dev_err(&instance->pdev->dev,
+			"Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n",
+			(unsigned long long)start_addr,
+			(unsigned long long)end_addr);
+		return false;
+	}
+
+	return true;
+}
 
 /**
  * megasas_enable_intr_fusion -	Enables interrupts
@@ -294,17 +321,23 @@ megasas_free_cmds_fusion(struct megasas_instance *instance)
 	struct fusion_context *fusion = instance->ctrl_context;
 	struct megasas_cmd_fusion *cmd;
 
-	/* SG, Sense */
-	for (i = 0; i < instance->max_mpt_cmds; i++) {
-		cmd = fusion->cmd_list[i];
-		if (cmd) {
-			if (cmd->sg_frame)
-				dma_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
-				      cmd->sg_frame_phys_addr);
-			if (cmd->sense)
-				dma_pool_free(fusion->sense_dma_pool, cmd->sense,
-				      cmd->sense_phys_addr);
+	if (fusion->sense)
+		dma_pool_free(fusion->sense_dma_pool, fusion->sense,
+			      fusion->sense_phys_addr);
+
+	/* SG */
+	if (fusion->cmd_list) {
+		for (i = 0; i < instance->max_mpt_cmds; i++) {
+			cmd = fusion->cmd_list[i];
+			if (cmd) {
+				if (cmd->sg_frame)
+					dma_pool_free(fusion->sg_dma_pool,
+						      cmd->sg_frame,
+						      cmd->sg_frame_phys_addr);
+			}
+			kfree(cmd);
 		}
+		kfree(fusion->cmd_list);
 	}
 
 	if (fusion->sg_dma_pool) {
@@ -336,13 +369,6 @@ megasas_free_cmds_fusion(struct megasas_instance *instance)
 		dma_pool_destroy(fusion->io_request_frames_pool);
 		fusion->io_request_frames_pool = NULL;
 	}
-
-
-	/* cmd_list */
-	for (i = 0; i < instance->max_mpt_cmds; i++)
-		kfree(fusion->cmd_list[i]);
-
-	kfree(fusion->cmd_list);
 }
 
 /**
@@ -356,10 +382,12 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 	u16 max_cmd;
 	struct fusion_context *fusion;
 	struct megasas_cmd_fusion *cmd;
+	int sense_sz;
+	u32 offset;
 
 	fusion = instance->ctrl_context;
 	max_cmd = instance->max_fw_cmds;
-
+	sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
 
 	fusion->sg_dma_pool =
 			dma_pool_create("mr_sg", &instance->pdev->dev,
@@ -368,7 +396,7 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 	/* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
 	fusion->sense_dma_pool =
 			dma_pool_create("mr_sense", &instance->pdev->dev,
-				SCSI_SENSE_BUFFERSIZE, 64, 0);
+				sense_sz, 64, 0);
 
 	if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
 		dev_err(&instance->pdev->dev,
@@ -376,6 +404,51 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 		return -ENOMEM;
 	}
 
+	fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
+				       GFP_KERNEL, &fusion->sense_phys_addr);
+	if (!fusion->sense) {
+		dev_err(&instance->pdev->dev,
+			"failed from %s %d\n",  __func__, __LINE__);
+		return -ENOMEM;
+	}
+
+	/* sense buffer, request frame and reply desc pool requires to be in
+	 * same 4 gb region. Below function will check the same.
+	 * In case of failure, new pci pool will be created with updated
+	 * alignment.
+	 * Older allocation and pool will be destroyed.
+	 * Alignment will be used such a way that next allocation if success,
+	 * will always meet same 4gb region requirement.
+	 * Actual requirement is not alignment, but we need start and end of
+	 * DMA address must have same upper 32 bit address.
+	 */
+
+	if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
+					   sense_sz)) {
+		dma_pool_free(fusion->sense_dma_pool, fusion->sense,
+			      fusion->sense_phys_addr);
+		fusion->sense = NULL;
+		dma_pool_destroy(fusion->sense_dma_pool);
+
+		fusion->sense_dma_pool =
+			dma_pool_create("mr_sense_align", &instance->pdev->dev,
+					sense_sz, roundup_pow_of_two(sense_sz),
+					0);
+		if (!fusion->sense_dma_pool) {
+			dev_err(&instance->pdev->dev,
+				"Failed from %s %d\n",  __func__, __LINE__);
+			return -ENOMEM;
+		}
+		fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
+					       GFP_KERNEL,
+					       &fusion->sense_phys_addr);
+		if (!fusion->sense) {
+			dev_err(&instance->pdev->dev,
+				"failed from %s %d\n",  __func__, __LINE__);
+			return -ENOMEM;
+		}
+	}
+
 	/*
 	 * Allocate and attach a frame to each of the commands in cmd_list
 	 */
@@ -384,9 +457,11 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 		cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
 					GFP_KERNEL, &cmd->sg_frame_phys_addr);
 
-		cmd->sense = dma_pool_alloc(fusion->sense_dma_pool,
-					GFP_KERNEL, &cmd->sense_phys_addr);
-		if (!cmd->sg_frame || !cmd->sense) {
+		offset = SCSI_SENSE_BUFFERSIZE * i;
+		cmd->sense = (u8 *)fusion->sense + offset;
+		cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
+
+		if (!cmd->sg_frame) {
 			dev_err(&instance->pdev->dev,
 				"Failed from %s %d\n",  __func__, __LINE__);
 			return -ENOMEM;
@@ -396,13 +471,10 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 	/* create sense buffer for the raid 1/10 fp */
 	for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
 		cmd = fusion->cmd_list[i];
-		cmd->sense = dma_pool_alloc(fusion->sense_dma_pool,
-			GFP_KERNEL, &cmd->sense_phys_addr);
-		if (!cmd->sense) {
-			dev_err(&instance->pdev->dev,
-				"Failed from %s %d\n",  __func__, __LINE__);
-			return -ENOMEM;
-		}
+		offset = SCSI_SENSE_BUFFERSIZE * i;
+		cmd->sense = (u8 *)fusion->sense + offset;
+		cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
+
 	}
 
 	return 0;
@@ -481,6 +553,40 @@ megasas_alloc_request_fusion(struct megasas_instance *instance)
 		}
 	}
 
+	if (!megasas_check_same_4gb_region(instance,
+					   fusion->io_request_frames_phys,
+					   fusion->io_frames_alloc_sz)) {
+		dma_pool_free(fusion->io_request_frames_pool,
+			      fusion->io_request_frames,
+			      fusion->io_request_frames_phys);
+		fusion->io_request_frames = NULL;
+		dma_pool_destroy(fusion->io_request_frames_pool);
+
+		fusion->io_request_frames_pool =
+			dma_pool_create("mr_ioreq_align",
+					&instance->pdev->dev,
+					fusion->io_frames_alloc_sz,
+					roundup_pow_of_two(fusion->io_frames_alloc_sz),
+					0);
+
+		if (!fusion->io_request_frames_pool) {
+			dev_err(&instance->pdev->dev,
+				"Failed from %s %d\n",  __func__, __LINE__);
+			return -ENOMEM;
+		}
+
+		fusion->io_request_frames =
+			dma_pool_alloc(fusion->io_request_frames_pool,
+				       GFP_KERNEL,
+				       &fusion->io_request_frames_phys);
+
+		if (!fusion->io_request_frames) {
+			dev_err(&instance->pdev->dev,
+				"Failed from %s %d\n",  __func__, __LINE__);
+			return -ENOMEM;
+		}
+	}
+
 	fusion->req_frames_desc =
 		dma_alloc_coherent(&instance->pdev->dev,
 				   fusion->request_alloc_sz,
@@ -521,6 +627,41 @@ megasas_alloc_reply_fusion(struct megasas_instance *instance)
 			"Failed from %s %d\n",  __func__, __LINE__);
 		return -ENOMEM;
 	}
+
+	if (!megasas_check_same_4gb_region(instance,
+					   fusion->reply_frames_desc_phys[0],
+					   (fusion->reply_alloc_sz * count))) {
+		dma_pool_free(fusion->reply_frames_desc_pool,
+			      fusion->reply_frames_desc[0],
+			      fusion->reply_frames_desc_phys[0]);
+		fusion->reply_frames_desc[0] = NULL;
+		dma_pool_destroy(fusion->reply_frames_desc_pool);
+
+		fusion->reply_frames_desc_pool =
+			dma_pool_create("mr_reply_align",
+					&instance->pdev->dev,
+					fusion->reply_alloc_sz * count,
+					roundup_pow_of_two(fusion->reply_alloc_sz * count),
+					0);
+
+		if (!fusion->reply_frames_desc_pool) {
+			dev_err(&instance->pdev->dev,
+				"Failed from %s %d\n",  __func__, __LINE__);
+			return -ENOMEM;
+		}
+
+		fusion->reply_frames_desc[0] =
+			dma_pool_alloc(fusion->reply_frames_desc_pool,
+				       GFP_KERNEL,
+				       &fusion->reply_frames_desc_phys[0]);
+
+		if (!fusion->reply_frames_desc[0]) {
+			dev_err(&instance->pdev->dev,
+				"Failed from %s %d\n",  __func__, __LINE__);
+			return -ENOMEM;
+		}
+	}
+
 	reply_desc = fusion->reply_frames_desc[0];
 	for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 		reply_desc->Words = cpu_to_le64(ULLONG_MAX);
@@ -539,52 +680,124 @@ megasas_alloc_reply_fusion(struct megasas_instance *instance)
 int
 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 {
-	int i, j, count;
+	int i, j, k, msix_count;
 	struct fusion_context *fusion;
 	union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
+	union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
+	dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
+	u8 dma_alloc_count, abs_index;
+	u32 chunk_size, array_size, offset;
 
 	fusion = instance->ctrl_context;
+	chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
+	array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
+		     MAX_MSIX_QUEUES_FUSION;
 
-	fusion->rdpq_virt = pci_alloc_consistent(instance->pdev,
-				sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
-				&fusion->rdpq_phys);
+	fusion->rdpq_virt = pci_alloc_consistent(instance->pdev, array_size,
+						 &fusion->rdpq_phys);
 	if (!fusion->rdpq_virt) {
 		dev_err(&instance->pdev->dev,
 			"Failed from %s %d\n",  __func__, __LINE__);
 		return -ENOMEM;
 	}
 
-	memset(fusion->rdpq_virt, 0,
-			sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION);
-	count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
+	memset(fusion->rdpq_virt, 0, array_size);
+	msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
+
 	fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
 							 &instance->pdev->dev,
-							 fusion->reply_alloc_sz,
-							 16, 0);
-
-	if (!fusion->reply_frames_desc_pool) {
+							 chunk_size, 16, 0);
+	fusion->reply_frames_desc_pool_align =
+				dma_pool_create("mr_rdpq_align",
+						&instance->pdev->dev,
+						chunk_size,
+						roundup_pow_of_two(chunk_size),
+						0);
+
+	if (!fusion->reply_frames_desc_pool ||
+	    !fusion->reply_frames_desc_pool_align) {
 		dev_err(&instance->pdev->dev,
 			"Failed from %s %d\n",  __func__, __LINE__);
 		return -ENOMEM;
 	}
 
-	for (i = 0; i < count; i++) {
-		fusion->reply_frames_desc[i] =
-				dma_pool_alloc(fusion->reply_frames_desc_pool,
-					GFP_KERNEL, &fusion->reply_frames_desc_phys[i]);
-		if (!fusion->reply_frames_desc[i]) {
+/*
+ * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
+ * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
+ * within 4GB boundary and also reply queues in a set must have same
+ * upper 32-bits in their memory address. so here driver is allocating the
+ * DMA'able memory for reply queues according. Driver uses limitation of
+ * VENTURA_SERIES to manage INVADER_SERIES as well.
+ */
+	dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
+
+	for (i = 0; i < dma_alloc_count; i++) {
+		rdpq_chunk_virt[i] =
+			dma_pool_alloc(fusion->reply_frames_desc_pool,
+				       GFP_KERNEL, &rdpq_chunk_phys[i]);
+		if (!rdpq_chunk_virt[i]) {
 			dev_err(&instance->pdev->dev,
 				"Failed from %s %d\n",  __func__, __LINE__);
 			return -ENOMEM;
 		}
+		/* reply desc pool requires to be in same 4 gb region.
+		 * Below function will check the same.
+		 * In case of failure, new pci pool will be created with updated
+		 * alignment.
+		 * For RDPQ buffers, driver always allocate two separate pci pool.
+		 * Alignment will be used such a way that next allocation if
+		 * success, will always meet same 4gb region requirement.
+		 * rdpq_tracker keep track of each buffer's physical,
+		 * virtual address and pci pool descriptor. It will help driver
+		 * while freeing the resources.
+		 *
+		 */
+		if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
+						   chunk_size)) {
+			dma_pool_free(fusion->reply_frames_desc_pool,
+				      rdpq_chunk_virt[i],
+				      rdpq_chunk_phys[i]);
 
-		fusion->rdpq_virt[i].RDPQBaseAddress =
-			cpu_to_le64(fusion->reply_frames_desc_phys[i]);
+			rdpq_chunk_virt[i] =
+				dma_pool_alloc(fusion->reply_frames_desc_pool_align,
+					       GFP_KERNEL, &rdpq_chunk_phys[i]);
+			if (!rdpq_chunk_virt[i]) {
+				dev_err(&instance->pdev->dev,
+					"Failed from %s %d\n",
+					__func__, __LINE__);
+				return -ENOMEM;
+			}
+			fusion->rdpq_tracker[i].dma_pool_ptr =
+					fusion->reply_frames_desc_pool_align;
+		} else {
+			fusion->rdpq_tracker[i].dma_pool_ptr =
+					fusion->reply_frames_desc_pool;
+		}
 
-		reply_desc = fusion->reply_frames_desc[i];
-		for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
-			reply_desc->Words = cpu_to_le64(ULLONG_MAX);
+		fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
+		fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
+	}
+
+	for (k = 0; k < dma_alloc_count; k++) {
+		for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
+			abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
+
+			if (abs_index == msix_count)
+				break;
+			offset = fusion->reply_alloc_sz * i;
+			fusion->rdpq_virt[abs_index].RDPQBaseAddress =
+					cpu_to_le64(rdpq_chunk_phys[k] + offset);
+			fusion->reply_frames_desc_phys[abs_index] =
+					rdpq_chunk_phys[k] + offset;
+			fusion->reply_frames_desc[abs_index] =
+					(union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
+
+			reply_desc = fusion->reply_frames_desc[abs_index];
+			for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
+				reply_desc->Words = ULLONG_MAX;
+		}
 	}
+
 	return 0;
 }
 
@@ -596,15 +809,18 @@ megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 
 	fusion = instance->ctrl_context;
 
-	for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) {
-		if (fusion->reply_frames_desc[i])
-			dma_pool_free(fusion->reply_frames_desc_pool,
-				fusion->reply_frames_desc[i],
-				fusion->reply_frames_desc_phys[i]);
+	for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
+		if (fusion->rdpq_tracker[i].pool_entry_virt)
+			dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
+				      fusion->rdpq_tracker[i].pool_entry_virt,
+				      fusion->rdpq_tracker[i].pool_entry_phys);
+
 	}
 
 	if (fusion->reply_frames_desc_pool)
 		dma_pool_destroy(fusion->reply_frames_desc_pool);
+	if (fusion->reply_frames_desc_pool_align)
+		dma_pool_destroy(fusion->reply_frames_desc_pool_align);
 
 	if (fusion->rdpq_virt)
 		pci_free_consistent(instance->pdev,
@@ -771,6 +987,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	u32 scratch_pad_2;
 	unsigned long flags;
 	struct timeval tv;
+	bool cur_fw_64bit_dma_capable;
 
 	fusion = instance->ctrl_context;
 
@@ -784,6 +1001,19 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 
 	cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
 
+	if (instance->adapter_type == INVADER_SERIES) {
+		cur_fw_64bit_dma_capable =
+			(scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
+
+		if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
+			dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
+				"DMA mask, but upcoming FW does not support 64bit DMA mask\n");
+			megaraid_sas_kill_hba(instance);
+			ret = 1;
+			goto fail_fw_init;
+		}
+	}
+
 	if (instance->is_rdpq && !cur_rdpq_mode) {
 		dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
 			" from RDPQ mode to non RDPQ mode\n");
@@ -811,6 +1041,7 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 	IOCInitMessage->MsgFlags = instance->is_rdpq ?
 			MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
 	IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
+	IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
 	IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
 	IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
 
@@ -852,6 +1083,10 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 
 	drv_ops->mfi_capabilities.support_qd_throttling = 1;
 	drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
+
+	if (instance->consistent_mask_64bit)
+		drv_ops->mfi_capabilities.support_64bit_mode = 1;
+
 	/* Convert capability to LE32 */
 	cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
 
@@ -861,8 +1096,8 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
 			strlen(sys_info) > 64 ? 64 : strlen(sys_info));
 		instance->system_info_buf->systemIdLength =
 			strlen(sys_info) > 64 ? 64 : strlen(sys_info);
-		init_frame->system_info_lo = instance->system_info_h;
-		init_frame->system_info_hi = 0;
+		init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
+		init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
 	}
 
 	init_frame->queue_info_new_phys_addr_hi =
@@ -953,6 +1188,15 @@ megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
 
 	memset(pd_sync, 0, pd_seq_map_sz);
 	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+	if (pend) {
+		dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
+		dcmd->flags = MFI_FRAME_DIR_WRITE;
+		instance->jbod_seq_cmd = cmd;
+	} else {
+		dcmd->flags = MFI_FRAME_DIR_READ;
+	}
+
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = 0xFF;
 	dcmd->sge_count = 1;
@@ -960,19 +1204,14 @@ megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
 	dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(pd_seq_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(pd_seq_map_sz);
+
+	megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
 
 	if (pend) {
-		dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
-		dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
-		instance->jbod_seq_cmd = cmd;
 		instance->instancet->issue_dcmd(instance, cmd);
 		return 0;
 	}
 
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
-
 	/* Below code is only for non pended DCMD */
 	if (!instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd,
@@ -1055,13 +1294,13 @@ megasas_get_ld_map_info(struct megasas_instance *instance)
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = 0xFF;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
+	dcmd->flags = MFI_FRAME_DIR_READ;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(size_map_info);
 	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
+
+	megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
 
 	if (!instance->mask_interrupts)
 		ret = megasas_issue_blocked_cmd(instance, cmd,
@@ -1159,15 +1398,15 @@ megasas_sync_map_info(struct megasas_instance *instance)
 	dcmd->cmd = MFI_CMD_DCMD;
 	dcmd->cmd_status = 0xFF;
 	dcmd->sge_count = 1;
-	dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
+	dcmd->flags = MFI_FRAME_DIR_WRITE;
 	dcmd->timeout = 0;
 	dcmd->pad_0 = 0;
 	dcmd->data_xfer_len = cpu_to_le32(size_map_info);
 	dcmd->mbox.b[0] = num_lds;
 	dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
 	dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
-	dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
-	dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
+
+	megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
 
 	instance->map_update_cmd = cmd;
 
@@ -2872,7 +3111,8 @@ megasas_build_io_fusion(struct megasas_instance *instance,
 	io_request->SGLOffset0 =
 		offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
 
-	io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
+	io_request->SenseBufferLowAddress =
+		cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
 	io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
 
 	cmd->scmd = scp;
@@ -2913,7 +3153,7 @@ void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
 	       (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
 	/*sense buffer is different for r1 command*/
 	r1_cmd->io_request->SenseBufferLowAddress =
-			cpu_to_le32(r1_cmd->sense_phys_addr);
+			cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
 	r1_cmd->scmd = cmd->scmd;
 	req_desc2 = megasas_get_request_descriptor(instance,
 						   (r1_cmd->index - 1));
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 4e229d72dfb0..1814d79cb98d 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -51,6 +51,8 @@
 #define HOST_DIAG_RESET_ADAPTER			    0x4
 #define MEGASAS_FUSION_MAX_RESET_TRIES		    3
 #define MAX_MSIX_QUEUES_FUSION			    128
+#define RDPQ_MAX_INDEX_IN_ONE_CHUNK		    16
+#define RDPQ_MAX_CHUNK_COUNT (MAX_MSIX_QUEUES_FUSION / RDPQ_MAX_INDEX_IN_ONE_CHUNK)
 
 /* Invader defines */
 #define MPI2_TYPE_CUDA				    0x2
@@ -1266,6 +1268,12 @@ struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY {
 	u32 Reserved2;
 };
 
+struct rdpq_alloc_detail {
+	struct dma_pool *dma_pool_ptr;
+	dma_addr_t	pool_entry_phys;
+	union MPI2_REPLY_DESCRIPTORS_UNION *pool_entry_virt;
+};
+
 struct fusion_context {
 	struct megasas_cmd_fusion **cmd_list;
 	dma_addr_t req_frames_desc_phys;
@@ -1278,9 +1286,14 @@ struct fusion_context {
 	struct dma_pool *sg_dma_pool;
 	struct dma_pool *sense_dma_pool;
 
+	u8 *sense;
+	dma_addr_t sense_phys_addr;
+
 	dma_addr_t reply_frames_desc_phys[MAX_MSIX_QUEUES_FUSION];
 	union MPI2_REPLY_DESCRIPTORS_UNION *reply_frames_desc[MAX_MSIX_QUEUES_FUSION];
+	struct rdpq_alloc_detail rdpq_tracker[RDPQ_MAX_CHUNK_COUNT];
 	struct dma_pool *reply_frames_desc_pool;
+	struct dma_pool *reply_frames_desc_pool_align;
 
 	u16 last_reply_idx[MAX_MSIX_QUEUES_FUSION];
 
-- 
2.14.1.dirty

[PATCH 19/19] megaraid_sas: driver version upgrade

[Shivasharan S]

Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index b34fc68c14c9..f5a36ccb8606 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -35,8 +35,8 @@
 /*
  * MegaRAID SAS Driver meta data
  */
-#define MEGASAS_VERSION				"07.702.06.00-rc1"
-#define MEGASAS_RELDATE				"June 21, 2017"
+#define MEGASAS_VERSION				"07.703.05.00-rc1"
+#define MEGASAS_RELDATE				"October 5, 2017"
 
 /*
  * Device IDs
-- 
2.14.1.dirty

Re: [PATCH 00/19] megaraid_sas: Updates for scsi-next

[Martin K. Petersen]

Shivasharan,

>   megaraid_sas: use adapter_type for all gen controllers
>   megaraid_sas: Add support for Crusader controllers
>   megaraid_sas: replace instance->ctrl_context checks with
>     instance->adapter_type
>   megaraid_sas: Remove redundant checks for ctrl_context
>   megaraid_sas: replace is_ventura with adapter_type checks
>   megaraid_sas: reduce size of fusion_context and use kmalloc for
>     allocation
>   megaraid_sas: Create separate functions to allocate ctrl memory
>   megaraid_sas: Create separate functions for allocating and freeing
>     controller DMA buffers
>   megaraid_sas: Pre-allocate frequently used DMA buffers
>   megaraid_sas: remove instance->ctrl_info
>   megaraid_sas: Move initialization of instance parameters inside newly
>     created function megasas_init_ctrl_params
>   megaraid_sas: Move controller memory allocations and DMA mask settings
>     from probe to megasas_init_fw
>   megaraid_sas: Update current host time to FW during IOC Init
>   megaraid_sas: Resize MFA frame used for IOC INIT to 4k
>   megaraid_sas: Incorrect processing of IOCTL frames for SMP/STP
>     commands
>   megaraid_sas: Retry with reduced queue depth when alloc fails for
>     higher QD
>   megaraid_sas: Do not limit queue_depth to 1k in non-RDPQ mode
>   megaraid_sas: Add support for 64bit consistent DMA
>   megaraid_sas: driver version upgrade

Nice cleanup in general. Applied to 4.15/scsi-queue.

-- 
Martin K. Petersen	Oracle Linux Engineering