[SCSI] megaraid_sas: Rename megaraid_sas.c to megaraid_sas_base.c

This patch renames megaraid_sas.c to megaraid_sas_base.c to facilitate
other files in the compile.

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 0 insertions, 5193 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
deleted file mode 100644
index 7451bc096a01..000000000000
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ /dev/null
@@ -1,5193 +0,0 @@
-/*
- *
- *		Linux MegaRAID driver for SAS based RAID controllers
- *
- * Copyright (c) 2003-2005  LSI Corporation.
- *
- *	   This program is free software; you can redistribute it and/or
- *	   modify it under the terms of the GNU General Public License
- *	   as published by the Free Software Foundation; either version
- *	   2 of the License, or (at your option) any later version.
- *
- * FILE		: megaraid_sas.c
- * Version     : v00.00.04.31-rc1
- *
- * Authors:
- *	(email-id : megaraidlinux@lsi.com)
- * 	Sreenivas Bagalkote
- * 	Sumant Patro
- *	Bo Yang
- *
- * List of supported controllers
- *
- * OEM	Product Name			VID	DID	SSVID	SSID
- * ---	------------			---	---	----	----
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/list.h>
-#include <linux/moduleparam.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/uio.h>
-#include <linux/slab.h>
-#include <asm/uaccess.h>
-#include <linux/fs.h>
-#include <linux/compat.h>
-#include <linux/blkdev.h>
-#include <linux/mutex.h>
-#include <linux/poll.h>
-
-#include <scsi/scsi.h>
-#include <scsi/scsi_cmnd.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_host.h>
-#include "megaraid_sas.h"
-
-/*
- * poll_mode_io:1- schedule complete completion from q cmd
- */
-static unsigned int poll_mode_io;
-module_param_named(poll_mode_io, poll_mode_io, int, 0);
-MODULE_PARM_DESC(poll_mode_io,
-	"Complete cmds from IO path, (default=0)");
-
-/*
- * Number of sectors per IO command
- * Will be set in megasas_init_mfi if user does not provide
- */
-static unsigned int max_sectors;
-module_param_named(max_sectors, max_sectors, int, 0);
-MODULE_PARM_DESC(max_sectors,
-	"Maximum number of sectors per IO command");
-
-MODULE_LICENSE("GPL");
-MODULE_VERSION(MEGASAS_VERSION);
-MODULE_AUTHOR("megaraidlinux@lsi.com");
-MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
-
-static int megasas_transition_to_ready(struct megasas_instance *instance);
-static int megasas_get_pd_list(struct megasas_instance *instance);
-static int megasas_issue_init_mfi(struct megasas_instance *instance);
-static int megasas_register_aen(struct megasas_instance *instance,
-				u32 seq_num, u32 class_locale_word);
-/*
- * PCI ID table for all supported controllers
- */
-static struct pci_device_id megasas_pci_table[] = {
-
-	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
-	/* xscale IOP */
-	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
-	/* ppc IOP */
-	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
-	/* ppc IOP */
-	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
-	/* gen2*/
-	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
-	/* gen2*/
-	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
-	/* skinny*/
-	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
-	/* skinny*/
-	{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
-	/* xscale IOP, vega */
-	{PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
-	/* xscale IOP */
-	{}
-};
-
-MODULE_DEVICE_TABLE(pci, megasas_pci_table);
-
-static int megasas_mgmt_majorno;
-static struct megasas_mgmt_info megasas_mgmt_info;
-static struct fasync_struct *megasas_async_queue;
-static DEFINE_MUTEX(megasas_async_queue_mutex);
-
-static int megasas_poll_wait_aen;
-static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
-static u32 support_poll_for_event;
-static u32 megasas_dbg_lvl;
-static u32 support_device_change;
-
-/* define lock for aen poll */
-spinlock_t poll_aen_lock;
-
-static void
-megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
-		     u8 alt_status);
-
-/**
- * megasas_get_cmd -	Get a command from the free pool
- * @instance:		Adapter soft state
- *
- * Returns a free command from the pool
- */
-static struct megasas_cmd *megasas_get_cmd(struct megasas_instance
-						  *instance)
-{
-	unsigned long flags;
-	struct megasas_cmd *cmd = NULL;
-
-	spin_lock_irqsave(&instance->cmd_pool_lock, flags);
-
-	if (!list_empty(&instance->cmd_pool)) {
-		cmd = list_entry((&instance->cmd_pool)->next,
-				 struct megasas_cmd, list);
-		list_del_init(&cmd->list);
-	} else {
-		printk(KERN_ERR "megasas: Command pool empty!\n");
-	}
-
-	spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
-	return cmd;
-}
-
-/**
- * megasas_return_cmd -	Return a cmd to free command pool
- * @instance:		Adapter soft state
- * @cmd:		Command packet to be returned to free command pool
- */
-static inline void
-megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&instance->cmd_pool_lock, flags);
-
-	cmd->scmd = NULL;
-	list_add_tail(&cmd->list, &instance->cmd_pool);
-
-	spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
-}
-
-
-/**
-*	The following functions are defined for xscale 
-*	(deviceid : 1064R, PERC5) controllers
-*/
-
-/**
- * megasas_enable_intr_xscale -	Enables interrupts
- * @regs:			MFI register set
- */
-static inline void
-megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
-{
-	writel(0, &(regs)->outbound_intr_mask);
-
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
- * megasas_disable_intr_xscale -Disables interrupt
- * @regs:			MFI register set
- */
-static inline void
-megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
-{
-	u32 mask = 0x1f;
-	writel(mask, &regs->outbound_intr_mask);
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
- * megasas_read_fw_status_reg_xscale - returns the current FW status value
- * @regs:			MFI register set
- */
-static u32
-megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
-{
-	return readl(&(regs)->outbound_msg_0);
-}
-/**
- * megasas_clear_interrupt_xscale -	Check & clear interrupt
- * @regs:				MFI register set
- */
-static int 
-megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
-{
-	u32 status;
-	u32 mfiStatus = 0;
-	/*
-	 * Check if it is our interrupt
-	 */
-	status = readl(&regs->outbound_intr_status);
-
-	if (status & MFI_OB_INTR_STATUS_MASK)
-		mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
-	if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
-		mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
-
-	/*
-	 * Clear the interrupt by writing back the same value
-	 */
-	if (mfiStatus)
-		writel(status, &regs->outbound_intr_status);
-
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_status);
-
-	return mfiStatus;
-}
-
-/**
- * megasas_fire_cmd_xscale -	Sends command to the FW
- * @frame_phys_addr :		Physical address of cmd
- * @frame_count :		Number of frames for the command
- * @regs :			MFI register set
- */
-static inline void 
-megasas_fire_cmd_xscale(struct megasas_instance *instance,
-		dma_addr_t frame_phys_addr,
-		u32 frame_count,
-		struct megasas_register_set __iomem *regs)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	writel((frame_phys_addr >> 3)|(frame_count),
-	       &(regs)->inbound_queue_port);
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-}
-
-/**
- * megasas_adp_reset_xscale -  For controller reset
- * @regs:                              MFI register set
- */
-static int
-megasas_adp_reset_xscale(struct megasas_instance *instance,
-	struct megasas_register_set __iomem *regs)
-{
-	u32 i;
-	u32 pcidata;
-	writel(MFI_ADP_RESET, &regs->inbound_doorbell);
-
-	for (i = 0; i < 3; i++)
-		msleep(1000); /* sleep for 3 secs */
-	pcidata  = 0;
-	pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
-	printk(KERN_NOTICE "pcidata = %x\n", pcidata);
-	if (pcidata & 0x2) {
-		printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
-		pcidata &= ~0x2;
-		pci_write_config_dword(instance->pdev,
-				MFI_1068_PCSR_OFFSET, pcidata);
-
-		for (i = 0; i < 2; i++)
-			msleep(1000); /* need to wait 2 secs again */
-
-		pcidata  = 0;
-		pci_read_config_dword(instance->pdev,
-				MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
-		printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
-		if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
-			printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
-			pcidata = 0;
-			pci_write_config_dword(instance->pdev,
-				MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
-		}
-	}
-	return 0;
-}
-
-/**
- * megasas_check_reset_xscale -	For controller reset check
- * @regs:				MFI register set
- */
-static int
-megasas_check_reset_xscale(struct megasas_instance *instance,
-		struct megasas_register_set __iomem *regs)
-{
-	u32 consumer;
-	consumer = *instance->consumer;
-
-	if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
-		(*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
-		return 1;
-	}
-	return 0;
-}
-
-static struct megasas_instance_template megasas_instance_template_xscale = {
-
-	.fire_cmd = megasas_fire_cmd_xscale,
-	.enable_intr = megasas_enable_intr_xscale,
-	.disable_intr = megasas_disable_intr_xscale,
-	.clear_intr = megasas_clear_intr_xscale,
-	.read_fw_status_reg = megasas_read_fw_status_reg_xscale,
-	.adp_reset = megasas_adp_reset_xscale,
-	.check_reset = megasas_check_reset_xscale,
-};
-
-/**
-*	This is the end of set of functions & definitions specific 
-*	to xscale (deviceid : 1064R, PERC5) controllers
-*/
-
-/**
-*	The following functions are defined for ppc (deviceid : 0x60) 
-* 	controllers
-*/
-
-/**
- * megasas_enable_intr_ppc -	Enables interrupts
- * @regs:			MFI register set
- */
-static inline void
-megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
-{
-	writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
-    
-	writel(~0x80000000, &(regs)->outbound_intr_mask);
-
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
- * megasas_disable_intr_ppc -	Disable interrupt
- * @regs:			MFI register set
- */
-static inline void
-megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
-{
-	u32 mask = 0xFFFFFFFF;
-	writel(mask, &regs->outbound_intr_mask);
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
- * megasas_read_fw_status_reg_ppc - returns the current FW status value
- * @regs:			MFI register set
- */
-static u32
-megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
-{
-	return readl(&(regs)->outbound_scratch_pad);
-}
-
-/**
- * megasas_clear_interrupt_ppc -	Check & clear interrupt
- * @regs:				MFI register set
- */
-static int 
-megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
-{
-	u32 status;
-	/*
-	 * Check if it is our interrupt
-	 */
-	status = readl(&regs->outbound_intr_status);
-
-	if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) {
-		return 0;
-	}
-
-	/*
-	 * Clear the interrupt by writing back the same value
-	 */
-	writel(status, &regs->outbound_doorbell_clear);
-
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_doorbell_clear);
-
-	return 1;
-}
-/**
- * megasas_fire_cmd_ppc -	Sends command to the FW
- * @frame_phys_addr :		Physical address of cmd
- * @frame_count :		Number of frames for the command
- * @regs :			MFI register set
- */
-static inline void 
-megasas_fire_cmd_ppc(struct megasas_instance *instance,
-		dma_addr_t frame_phys_addr,
-		u32 frame_count,
-		struct megasas_register_set __iomem *regs)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	writel((frame_phys_addr | (frame_count<<1))|1, 
-			&(regs)->inbound_queue_port);
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-}
-
-/**
- * megasas_adp_reset_ppc -	For controller reset
- * @regs:				MFI register set
- */
-static int
-megasas_adp_reset_ppc(struct megasas_instance *instance,
-			struct megasas_register_set __iomem *regs)
-{
-	return 0;
-}
-
-/**
- * megasas_check_reset_ppc -	For controller reset check
- * @regs:				MFI register set
- */
-static int
-megasas_check_reset_ppc(struct megasas_instance *instance,
-			struct megasas_register_set __iomem *regs)
-{
-	return 0;
-}
-static struct megasas_instance_template megasas_instance_template_ppc = {
-	
-	.fire_cmd = megasas_fire_cmd_ppc,
-	.enable_intr = megasas_enable_intr_ppc,
-	.disable_intr = megasas_disable_intr_ppc,
-	.clear_intr = megasas_clear_intr_ppc,
-	.read_fw_status_reg = megasas_read_fw_status_reg_ppc,
-	.adp_reset = megasas_adp_reset_ppc,
-	.check_reset = megasas_check_reset_ppc,
-};
-
-/**
- * megasas_enable_intr_skinny -	Enables interrupts
- * @regs:			MFI register set
- */
-static inline void
-megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
-{
-	writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
-
-	writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
-
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
- * megasas_disable_intr_skinny -	Disables interrupt
- * @regs:			MFI register set
- */
-static inline void
-megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs)
-{
-	u32 mask = 0xFFFFFFFF;
-	writel(mask, &regs->outbound_intr_mask);
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
- * megasas_read_fw_status_reg_skinny - returns the current FW status value
- * @regs:			MFI register set
- */
-static u32
-megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
-{
-	return readl(&(regs)->outbound_scratch_pad);
-}
-
-/**
- * megasas_clear_interrupt_skinny -	Check & clear interrupt
- * @regs:				MFI register set
- */
-static int
-megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
-{
-	u32 status;
-	/*
-	 * Check if it is our interrupt
-	 */
-	status = readl(&regs->outbound_intr_status);
-
-	if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
-		return 0;
-	}
-
-	/*
-	 * Clear the interrupt by writing back the same value
-	 */
-	writel(status, &regs->outbound_intr_status);
-
-	/*
-	* dummy read to flush PCI
-	*/
-	readl(&regs->outbound_intr_status);
-
-	return 1;
-}
-
-/**
- * megasas_fire_cmd_skinny -	Sends command to the FW
- * @frame_phys_addr :		Physical address of cmd
- * @frame_count :		Number of frames for the command
- * @regs :			MFI register set
- */
-static inline void
-megasas_fire_cmd_skinny(struct megasas_instance *instance,
-			dma_addr_t frame_phys_addr,
-			u32 frame_count,
-			struct megasas_register_set __iomem *regs)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	writel(0, &(regs)->inbound_high_queue_port);
-	writel((frame_phys_addr | (frame_count<<1))|1,
-		&(regs)->inbound_low_queue_port);
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-}
-
-/**
- * megasas_adp_reset_skinny -	For controller reset
- * @regs:				MFI register set
- */
-static int
-megasas_adp_reset_skinny(struct megasas_instance *instance,
-			struct megasas_register_set __iomem *regs)
-{
-	return 0;
-}
-
-/**
- * megasas_check_reset_skinny -	For controller reset check
- * @regs:				MFI register set
- */
-static int
-megasas_check_reset_skinny(struct megasas_instance *instance,
-				struct megasas_register_set __iomem *regs)
-{
-	return 0;
-}
-
-static struct megasas_instance_template megasas_instance_template_skinny = {
-
-	.fire_cmd = megasas_fire_cmd_skinny,
-	.enable_intr = megasas_enable_intr_skinny,
-	.disable_intr = megasas_disable_intr_skinny,
-	.clear_intr = megasas_clear_intr_skinny,
-	.read_fw_status_reg = megasas_read_fw_status_reg_skinny,
-	.adp_reset = megasas_adp_reset_skinny,
-	.check_reset = megasas_check_reset_skinny,
-};
-
-
-/**
-*	The following functions are defined for gen2 (deviceid : 0x78 0x79)
-*	controllers
-*/
-
-/**
- * megasas_enable_intr_gen2 -  Enables interrupts
- * @regs:                      MFI register set
- */
-static inline void
-megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
-{
-	writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
-
-	/* write ~0x00000005 (4 & 1) to the intr mask*/
-	writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
-
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
- * megasas_disable_intr_gen2 - Disables interrupt
- * @regs:                      MFI register set
- */
-static inline void
-megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs)
-{
-	u32 mask = 0xFFFFFFFF;
-	writel(mask, &regs->outbound_intr_mask);
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
- * megasas_read_fw_status_reg_gen2 - returns the current FW status value
- * @regs:                      MFI register set
- */
-static u32
-megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
-{
-	return readl(&(regs)->outbound_scratch_pad);
-}
-
-/**
- * megasas_clear_interrupt_gen2 -      Check & clear interrupt
- * @regs:                              MFI register set
- */
-static int
-megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
-{
-	u32 status;
-	u32 mfiStatus = 0;
-	/*
-	 * Check if it is our interrupt
-	 */
-	status = readl(&regs->outbound_intr_status);
-
-	if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) {
-		mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
-	}
-	if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
-		mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
-	}
-
-	/*
-	 * Clear the interrupt by writing back the same value
-	 */
-	if (mfiStatus)
-		writel(status, &regs->outbound_doorbell_clear);
-
-	/* Dummy readl to force pci flush */
-	readl(&regs->outbound_intr_status);
-
-	return mfiStatus;
-}
-/**
- * megasas_fire_cmd_gen2 -     Sends command to the FW
- * @frame_phys_addr :          Physical address of cmd
- * @frame_count :              Number of frames for the command
- * @regs :                     MFI register set
- */
-static inline void
-megasas_fire_cmd_gen2(struct megasas_instance *instance,
-			dma_addr_t frame_phys_addr,
-			u32 frame_count,
-			struct megasas_register_set __iomem *regs)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	writel((frame_phys_addr | (frame_count<<1))|1,
-			&(regs)->inbound_queue_port);
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-}
-
-/**
- * megasas_adp_reset_gen2 -	For controller reset
- * @regs:				MFI register set
- */
-static int
-megasas_adp_reset_gen2(struct megasas_instance *instance,
-			struct megasas_register_set __iomem *reg_set)
-{
-	u32			retry = 0 ;
-	u32			HostDiag;
-
-	writel(0, &reg_set->seq_offset);
-	writel(4, &reg_set->seq_offset);
-	writel(0xb, &reg_set->seq_offset);
-	writel(2, &reg_set->seq_offset);
-	writel(7, &reg_set->seq_offset);
-	writel(0xd, &reg_set->seq_offset);
-	msleep(1000);
-
-	HostDiag = (u32)readl(&reg_set->host_diag);
-
-	while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
-		msleep(100);
-		HostDiag = (u32)readl(&reg_set->host_diag);
-		printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
-					retry, HostDiag);
-
-		if (retry++ >= 100)
-			return 1;
-
-	}
-
-	printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
-
-	writel((HostDiag | DIAG_RESET_ADAPTER), &reg_set->host_diag);
-
-	ssleep(10);
-
-	HostDiag = (u32)readl(&reg_set->host_diag);
-	while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
-		msleep(100);
-		HostDiag = (u32)readl(&reg_set->host_diag);
-		printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
-				retry, HostDiag);
-
-		if (retry++ >= 1000)
-			return 1;
-
-	}
-	return 0;
-}
-
-/**
- * megasas_check_reset_gen2 -	For controller reset check
- * @regs:				MFI register set
- */
-static int
-megasas_check_reset_gen2(struct megasas_instance *instance,
-		struct megasas_register_set __iomem *regs)
-{
-	if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
-		return 1;
-	}
-
-	return 0;
-}
-
-static struct megasas_instance_template megasas_instance_template_gen2 = {
-
-	.fire_cmd = megasas_fire_cmd_gen2,
-	.enable_intr = megasas_enable_intr_gen2,
-	.disable_intr = megasas_disable_intr_gen2,
-	.clear_intr = megasas_clear_intr_gen2,
-	.read_fw_status_reg = megasas_read_fw_status_reg_gen2,
-	.adp_reset = megasas_adp_reset_gen2,
-	.check_reset = megasas_check_reset_gen2,
-};
-
-/**
-*	This is the end of set of functions & definitions
-*       specific to gen2 (deviceid : 0x78, 0x79) controllers
-*/
-
-/**
- * megasas_issue_polled -	Issues a polling command
- * @instance:			Adapter soft state
- * @cmd:			Command packet to be issued 
- *
- * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
- */
-static int
-megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
-{
-	int i;
-	u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
-
-	struct megasas_header *frame_hdr = &cmd->frame->hdr;
-
-	frame_hdr->cmd_status = 0xFF;
-	frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
-
-	/*
-	 * Issue the frame using inbound queue port
-	 */
-	instance->instancet->fire_cmd(instance,
-			cmd->frame_phys_addr, 0, instance->reg_set);
-
-	/*
-	 * Wait for cmd_status to change
-	 */
-	for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) {
-		rmb();
-		msleep(1);
-	}
-
-	if (frame_hdr->cmd_status == 0xff)
-		return -ETIME;
-
-	return 0;
-}
-
-/**
- * megasas_issue_blocked_cmd -	Synchronous wrapper around regular FW cmds
- * @instance:			Adapter soft state
- * @cmd:			Command to be issued
- *
- * This function waits on an event for the command to be returned from ISR.
- * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
- * Used to issue ioctl commands.
- */
-static int
-megasas_issue_blocked_cmd(struct megasas_instance *instance,
-			  struct megasas_cmd *cmd)
-{
-	cmd->cmd_status = ENODATA;
-
-	instance->instancet->fire_cmd(instance,
-			cmd->frame_phys_addr, 0, instance->reg_set);
-
-	wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
-
-	return 0;
-}
-
-/**
- * megasas_issue_blocked_abort_cmd -	Aborts previously issued cmd
- * @instance:				Adapter soft state
- * @cmd_to_abort:			Previously issued cmd to be aborted
- *
- * MFI firmware can abort previously issued AEN comamnd (automatic event
- * notification). The megasas_issue_blocked_abort_cmd() issues such abort
- * cmd and waits for return status.
- * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
- */
-static int
-megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
-				struct megasas_cmd *cmd_to_abort)
-{
-	struct megasas_cmd *cmd;
-	struct megasas_abort_frame *abort_fr;
-
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd)
-		return -1;
-
-	abort_fr = &cmd->frame->abort;
-
-	/*
-	 * Prepare and issue the abort frame
-	 */
-	abort_fr->cmd = MFI_CMD_ABORT;
-	abort_fr->cmd_status = 0xFF;
-	abort_fr->flags = 0;
-	abort_fr->abort_context = cmd_to_abort->index;
-	abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
-	abort_fr->abort_mfi_phys_addr_hi = 0;
-
-	cmd->sync_cmd = 1;
-	cmd->cmd_status = 0xFF;
-
-	instance->instancet->fire_cmd(instance,
-			cmd->frame_phys_addr, 0, instance->reg_set);
-
-	/*
-	 * Wait for this cmd to complete
-	 */
-	wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
-	cmd->sync_cmd = 0;
-
-	megasas_return_cmd(instance, cmd);
-	return 0;
-}
-
-/**
- * megasas_make_sgl32 -	Prepares 32-bit SGL
- * @instance:		Adapter soft state
- * @scp:		SCSI command from the mid-layer
- * @mfi_sgl:		SGL to be filled in
- *
- * If successful, this function returns the number of SG elements. Otherwise,
- * it returnes -1.
- */
-static int
-megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
-		   union megasas_sgl *mfi_sgl)
-{
-	int i;
-	int sge_count;
-	struct scatterlist *os_sgl;
-
-	sge_count = scsi_dma_map(scp);
-	BUG_ON(sge_count < 0);
-
-	if (sge_count) {
-		scsi_for_each_sg(scp, os_sgl, sge_count, i) {
-			mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
-			mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
-		}
-	}
-	return sge_count;
-}
-
-/**
- * megasas_make_sgl64 -	Prepares 64-bit SGL
- * @instance:		Adapter soft state
- * @scp:		SCSI command from the mid-layer
- * @mfi_sgl:		SGL to be filled in
- *
- * If successful, this function returns the number of SG elements. Otherwise,
- * it returnes -1.
- */
-static int
-megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
-		   union megasas_sgl *mfi_sgl)
-{
-	int i;
-	int sge_count;
-	struct scatterlist *os_sgl;
-
-	sge_count = scsi_dma_map(scp);
-	BUG_ON(sge_count < 0);
-
-	if (sge_count) {
-		scsi_for_each_sg(scp, os_sgl, sge_count, i) {
-			mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
-			mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
-		}
-	}
-	return sge_count;
-}
-
-/**
- * megasas_make_sgl_skinny - Prepares IEEE SGL
- * @instance:           Adapter soft state
- * @scp:                SCSI command from the mid-layer
- * @mfi_sgl:            SGL to be filled in
- *
- * If successful, this function returns the number of SG elements. Otherwise,
- * it returnes -1.
- */
-static int
-megasas_make_sgl_skinny(struct megasas_instance *instance,
-		struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
-{
-	int i;
-	int sge_count;
-	struct scatterlist *os_sgl;
-
-	sge_count = scsi_dma_map(scp);
-
-	if (sge_count) {
-		scsi_for_each_sg(scp, os_sgl, sge_count, i) {
-			mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
-			mfi_sgl->sge_skinny[i].phys_addr =
-						sg_dma_address(os_sgl);
-			mfi_sgl->sge_skinny[i].flag = 0;
-		}
-	}
-	return sge_count;
-}
-
- /**
- * megasas_get_frame_count - Computes the number of frames
- * @frame_type		: type of frame- io or pthru frame
- * @sge_count		: number of sg elements
- *
- * Returns the number of frames required for numnber of sge's (sge_count)
- */
-
-static u32 megasas_get_frame_count(struct megasas_instance *instance,
-			u8 sge_count, u8 frame_type)
-{
-	int num_cnt;
-	int sge_bytes;
-	u32 sge_sz;
-	u32 frame_count=0;
-
-	sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
-	    sizeof(struct megasas_sge32);
-
-	if (instance->flag_ieee) {
-		sge_sz = sizeof(struct megasas_sge_skinny);
-	}
-
-	/*
-	 * Main frame can contain 2 SGEs for 64-bit SGLs and
-	 * 3 SGEs for 32-bit SGLs for ldio &
-	 * 1 SGEs for 64-bit SGLs and
-	 * 2 SGEs for 32-bit SGLs for pthru frame
-	 */
-	if (unlikely(frame_type == PTHRU_FRAME)) {
-		if (instance->flag_ieee == 1) {
-			num_cnt = sge_count - 1;
-		} else if (IS_DMA64)
-			num_cnt = sge_count - 1;
-		else
-			num_cnt = sge_count - 2;
-	} else {
-		if (instance->flag_ieee == 1) {
-			num_cnt = sge_count - 1;
-		} else if (IS_DMA64)
-			num_cnt = sge_count - 2;
-		else
-			num_cnt = sge_count - 3;
-	}
-
-	if(num_cnt>0){
-		sge_bytes = sge_sz * num_cnt;
-
-		frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
-		    ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
-	}
-	/* Main frame */
-	frame_count +=1;
-
-	if (frame_count > 7)
-		frame_count = 8;
-	return frame_count;
-}
-
-/**
- * megasas_build_dcdb -	Prepares a direct cdb (DCDB) command
- * @instance:		Adapter soft state
- * @scp:		SCSI command
- * @cmd:		Command to be prepared in
- *
- * This function prepares CDB commands. These are typcially pass-through
- * commands to the devices.
- */
-static int
-megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
-		   struct megasas_cmd *cmd)
-{
-	u32 is_logical;
-	u32 device_id;
-	u16 flags = 0;
-	struct megasas_pthru_frame *pthru;
-
-	is_logical = MEGASAS_IS_LOGICAL(scp);
-	device_id = MEGASAS_DEV_INDEX(instance, scp);
-	pthru = (struct megasas_pthru_frame *)cmd->frame;
-
-	if (scp->sc_data_direction == PCI_DMA_TODEVICE)
-		flags = MFI_FRAME_DIR_WRITE;
-	else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
-		flags = MFI_FRAME_DIR_READ;
-	else if (scp->sc_data_direction == PCI_DMA_NONE)
-		flags = MFI_FRAME_DIR_NONE;
-
-	if (instance->flag_ieee == 1) {
-		flags |= MFI_FRAME_IEEE;
-	}
-
-	/*
-	 * Prepare the DCDB frame
-	 */
-	pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
-	pthru->cmd_status = 0x0;
-	pthru->scsi_status = 0x0;
-	pthru->target_id = device_id;
-	pthru->lun = scp->device->lun;
-	pthru->cdb_len = scp->cmd_len;
-	pthru->timeout = 0;
-	pthru->pad_0 = 0;
-	pthru->flags = flags;
-	pthru->data_xfer_len = scsi_bufflen(scp);
-
-	memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
-
-	/*
-	* If the command is for the tape device, set the
-	* pthru timeout to the os layer timeout value.
-	*/
-	if (scp->device->type == TYPE_TAPE) {
-		if ((scp->request->timeout / HZ) > 0xFFFF)
-			pthru->timeout = 0xFFFF;
-		else
-			pthru->timeout = scp->request->timeout / HZ;
-	}
-
-	/*
-	 * Construct SGL
-	 */
-	if (instance->flag_ieee == 1) {
-		pthru->flags |= MFI_FRAME_SGL64;
-		pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
-						      &pthru->sgl);
-	} else if (IS_DMA64) {
-		pthru->flags |= MFI_FRAME_SGL64;
-		pthru->sge_count = megasas_make_sgl64(instance, scp,
-						      &pthru->sgl);
-	} else
-		pthru->sge_count = megasas_make_sgl32(instance, scp,
-						      &pthru->sgl);
-
-	if (pthru->sge_count > instance->max_num_sge) {
-		printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
-			pthru->sge_count);
-		return 0;
-	}
-
-	/*
-	 * Sense info specific
-	 */
-	pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
-	pthru->sense_buf_phys_addr_hi = 0;
-	pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
-
-	/*
-	 * Compute the total number of frames this command consumes. FW uses
-	 * this number to pull sufficient number of frames from host memory.
-	 */
-	cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
-							PTHRU_FRAME);
-
-	return cmd->frame_count;
-}
-
-/**
- * megasas_build_ldio -	Prepares IOs to logical devices
- * @instance:		Adapter soft state
- * @scp:		SCSI command
- * @cmd:		Command to be prepared
- *
- * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
- */
-static int
-megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
-		   struct megasas_cmd *cmd)
-{
-	u32 device_id;
-	u8 sc = scp->cmnd[0];
-	u16 flags = 0;
-	struct megasas_io_frame *ldio;
-
-	device_id = MEGASAS_DEV_INDEX(instance, scp);
-	ldio = (struct megasas_io_frame *)cmd->frame;
-
-	if (scp->sc_data_direction == PCI_DMA_TODEVICE)
-		flags = MFI_FRAME_DIR_WRITE;
-	else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
-		flags = MFI_FRAME_DIR_READ;
-
-	if (instance->flag_ieee == 1) {
-		flags |= MFI_FRAME_IEEE;
-	}
-
-	/*
-	 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
-	 */
-	ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
-	ldio->cmd_status = 0x0;
-	ldio->scsi_status = 0x0;
-	ldio->target_id = device_id;
-	ldio->timeout = 0;
-	ldio->reserved_0 = 0;
-	ldio->pad_0 = 0;
-	ldio->flags = flags;
-	ldio->start_lba_hi = 0;
-	ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
-
-	/*
-	 * 6-byte READ(0x08) or WRITE(0x0A) cdb
-	 */
-	if (scp->cmd_len == 6) {
-		ldio->lba_count = (u32) scp->cmnd[4];
-		ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
-		    ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
-
-		ldio->start_lba_lo &= 0x1FFFFF;
-	}
-
-	/*
-	 * 10-byte READ(0x28) or WRITE(0x2A) cdb
-	 */
-	else if (scp->cmd_len == 10) {
-		ldio->lba_count = (u32) scp->cmnd[8] |
-		    ((u32) scp->cmnd[7] << 8);
-		ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
-		    ((u32) scp->cmnd[3] << 16) |
-		    ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
-	}
-
-	/*
-	 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
-	 */
-	else if (scp->cmd_len == 12) {
-		ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
-		    ((u32) scp->cmnd[7] << 16) |
-		    ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
-
-		ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
-		    ((u32) scp->cmnd[3] << 16) |
-		    ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
-	}
-
-	/*
-	 * 16-byte READ(0x88) or WRITE(0x8A) cdb
-	 */
-	else if (scp->cmd_len == 16) {
-		ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
-		    ((u32) scp->cmnd[11] << 16) |
-		    ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
-
-		ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
-		    ((u32) scp->cmnd[7] << 16) |
-		    ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
-
-		ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
-		    ((u32) scp->cmnd[3] << 16) |
-		    ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
-
-	}
-
-	/*
-	 * Construct SGL
-	 */
-	if (instance->flag_ieee) {
-		ldio->flags |= MFI_FRAME_SGL64;
-		ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
-					      &ldio->sgl);
-	} else if (IS_DMA64) {
-		ldio->flags |= MFI_FRAME_SGL64;
-		ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
-	} else
-		ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
-
-	if (ldio->sge_count > instance->max_num_sge) {
-		printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
-			ldio->sge_count);
-		return 0;
-	}
-
-	/*
-	 * Sense info specific
-	 */
-	ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
-	ldio->sense_buf_phys_addr_hi = 0;
-	ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
-
-	/*
-	 * Compute the total number of frames this command consumes. FW uses
-	 * this number to pull sufficient number of frames from host memory.
-	 */
-	cmd->frame_count = megasas_get_frame_count(instance,
-			ldio->sge_count, IO_FRAME);
-
-	return cmd->frame_count;
-}
-
-/**
- * megasas_is_ldio -		Checks if the cmd is for logical drive
- * @scmd:			SCSI command
- *	
- * Called by megasas_queue_command to find out if the command to be queued
- * is a logical drive command	
- */
-static inline int megasas_is_ldio(struct scsi_cmnd *cmd)
-{
-	if (!MEGASAS_IS_LOGICAL(cmd))
-		return 0;
-	switch (cmd->cmnd[0]) {
-	case READ_10:
-	case WRITE_10:
-	case READ_12:
-	case WRITE_12:
-	case READ_6:
-	case WRITE_6:
-	case READ_16:
-	case WRITE_16:
-		return 1;
-	default:
-		return 0;
-	}
-}
-
- /**
- * megasas_dump_pending_frames -	Dumps the frame address of all pending cmds
- *                              	in FW
- * @instance:				Adapter soft state
- */
-static inline void
-megasas_dump_pending_frames(struct megasas_instance *instance)
-{
-	struct megasas_cmd *cmd;
-	int i,n;
-	union megasas_sgl *mfi_sgl;
-	struct megasas_io_frame *ldio;
-	struct megasas_pthru_frame *pthru;
-	u32 sgcount;
-	u32 max_cmd = instance->max_fw_cmds;
-
-	printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
-	printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
-	if (IS_DMA64)
-		printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
-	else
-		printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
-
-	printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
-	for (i = 0; i < max_cmd; i++) {
-		cmd = instance->cmd_list[i];
-		if(!cmd->scmd)
-			continue;
-		printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
-		if (megasas_is_ldio(cmd->scmd)){
-			ldio = (struct megasas_io_frame *)cmd->frame;
-			mfi_sgl = &ldio->sgl;
-			sgcount = ldio->sge_count;
-			printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount);
-		}
-		else {
-			pthru = (struct megasas_pthru_frame *) cmd->frame;
-			mfi_sgl = &pthru->sgl;
-			sgcount = pthru->sge_count;
-			printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount);
-		}
-	if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
-		for (n = 0; n < sgcount; n++){
-			if (IS_DMA64)
-				printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ;
-			else
-				printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
-			}
-		}
-		printk(KERN_ERR "\n");
-	} /*for max_cmd*/
-	printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
-	for (i = 0; i < max_cmd; i++) {
-
-		cmd = instance->cmd_list[i];
-
-		if(cmd->sync_cmd == 1){
-			printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
-		}
-	}
-	printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
-}
-
-/**
- * megasas_queue_command -	Queue entry point
- * @scmd:			SCSI command to be queued
- * @done:			Callback entry point
- */
-static int
-megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
-{
-	u32 frame_count;
-	struct megasas_cmd *cmd;
-	struct megasas_instance *instance;
-	unsigned long flags;
-
-	instance = (struct megasas_instance *)
-	    scmd->device->host->hostdata;
-
-	if (instance->issuepend_done == 0)
-		return SCSI_MLQUEUE_HOST_BUSY;
-
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
-		spin_unlock_irqrestore(&instance->hba_lock, flags);
-		return SCSI_MLQUEUE_HOST_BUSY;
-	}
-
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-	scmd->scsi_done = done;
-	scmd->result = 0;
-
-	if (MEGASAS_IS_LOGICAL(scmd) &&
-	    (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
-		scmd->result = DID_BAD_TARGET << 16;
-		goto out_done;
-	}
-
-	switch (scmd->cmnd[0]) {
-	case SYNCHRONIZE_CACHE:
-		/*
-		 * FW takes care of flush cache on its own
-		 * No need to send it down
-		 */
-		scmd->result = DID_OK << 16;
-		goto out_done;
-	default:
-		break;
-	}
-
-	cmd = megasas_get_cmd(instance);
-	if (!cmd)
-		return SCSI_MLQUEUE_HOST_BUSY;
-
-	/*
-	 * Logical drive command
-	 */
-	if (megasas_is_ldio(scmd))
-		frame_count = megasas_build_ldio(instance, scmd, cmd);
-	else
-		frame_count = megasas_build_dcdb(instance, scmd, cmd);
-
-	if (!frame_count)
-		goto out_return_cmd;
-
-	cmd->scmd = scmd;
-	scmd->SCp.ptr = (char *)cmd;
-
-	/*
-	 * Issue the command to the FW
-	 */
-	atomic_inc(&instance->fw_outstanding);
-
-	instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
-				cmd->frame_count-1, instance->reg_set);
-	/*
-	 * Check if we have pend cmds to be completed
-	 */
-	if (poll_mode_io && atomic_read(&instance->fw_outstanding))
-		tasklet_schedule(&instance->isr_tasklet);
-
-
-	return 0;
-
- out_return_cmd:
-	megasas_return_cmd(instance, cmd);
- out_done:
-	done(scmd);
-	return 0;
-}
-
-static DEF_SCSI_QCMD(megasas_queue_command)
-
-static struct megasas_instance *megasas_lookup_instance(u16 host_no)
-{
-	int i;
-
-	for (i = 0; i < megasas_mgmt_info.max_index; i++) {
-
-		if ((megasas_mgmt_info.instance[i]) &&
-		    (megasas_mgmt_info.instance[i]->host->host_no == host_no))
-			return megasas_mgmt_info.instance[i];
-	}
-
-	return NULL;
-}
-
-static int megasas_slave_configure(struct scsi_device *sdev)
-{
-	u16             pd_index = 0;
-	struct  megasas_instance *instance ;
-
-	instance = megasas_lookup_instance(sdev->host->host_no);
-
-	/*
-	* Don't export physical disk devices to the disk driver.
-	*
-	* FIXME: Currently we don't export them to the midlayer at all.
-	*        That will be fixed once LSI engineers have audited the
-	*        firmware for possible issues.
-	*/
-	if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
-				sdev->type == TYPE_DISK) {
-		pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
-								sdev->id;
-		if (instance->pd_list[pd_index].driveState ==
-						MR_PD_STATE_SYSTEM) {
-			blk_queue_rq_timeout(sdev->request_queue,
-				MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
-			return 0;
-		}
-		return -ENXIO;
-	}
-
-	/*
-	* The RAID firmware may require extended timeouts.
-	*/
-	blk_queue_rq_timeout(sdev->request_queue,
-		MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
-	return 0;
-}
-
-static int megasas_slave_alloc(struct scsi_device *sdev)
-{
-	u16             pd_index = 0;
-	struct megasas_instance *instance ;
-	instance = megasas_lookup_instance(sdev->host->host_no);
-	if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
-				(sdev->type == TYPE_DISK)) {
-		/*
-		 * Open the OS scan to the SYSTEM PD
-		 */
-		pd_index =
-			(sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
-			sdev->id;
-		if ((instance->pd_list[pd_index].driveState ==
-					MR_PD_STATE_SYSTEM) &&
-			(instance->pd_list[pd_index].driveType ==
-						TYPE_DISK)) {
-			return 0;
-		}
-		return -ENXIO;
-	}
-	return 0;
-}
-
-static void megaraid_sas_kill_hba(struct megasas_instance *instance)
-{
-	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
-		writel(MFI_STOP_ADP,
-			&instance->reg_set->reserved_0[0]);
-	} else {
-		writel(MFI_STOP_ADP,
-			&instance->reg_set->inbound_doorbell);
-	}
-}
-
-/**
- * megasas_complete_cmd_dpc	 -	Returns FW's controller structure
- * @instance_addr:			Address of adapter soft state
- *
- * Tasklet to complete cmds
- */
-static void megasas_complete_cmd_dpc(unsigned long instance_addr)
-{
-	u32 producer;
-	u32 consumer;
-	u32 context;
-	struct megasas_cmd *cmd;
-	struct megasas_instance *instance =
-				(struct megasas_instance *)instance_addr;
-	unsigned long flags;
-
-	/* If we have already declared adapter dead, donot complete cmds */
-	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
-		return;
-
-	spin_lock_irqsave(&instance->completion_lock, flags);
-
-	producer = *instance->producer;
-	consumer = *instance->consumer;
-
-	while (consumer != producer) {
-		context = instance->reply_queue[consumer];
-		if (context >= instance->max_fw_cmds) {
-			printk(KERN_ERR "Unexpected context value %x\n",
-				context);
-			BUG();
-		}
-
-		cmd = instance->cmd_list[context];
-
-		megasas_complete_cmd(instance, cmd, DID_OK);
-
-		consumer++;
-		if (consumer == (instance->max_fw_cmds + 1)) {
-			consumer = 0;
-		}
-	}
-
-	*instance->consumer = producer;
-
-	spin_unlock_irqrestore(&instance->completion_lock, flags);
-
-	/*
-	 * Check if we can restore can_queue
-	 */
-	if (instance->flag & MEGASAS_FW_BUSY
-		&& time_after(jiffies, instance->last_time + 5 * HZ)
-		&& atomic_read(&instance->fw_outstanding) < 17) {
-
-		spin_lock_irqsave(instance->host->host_lock, flags);
-		instance->flag &= ~MEGASAS_FW_BUSY;
-		if ((instance->pdev->device ==
-			PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-			(instance->pdev->device ==
-			PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
-			instance->host->can_queue =
-				instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
-		} else
-			instance->host->can_queue =
-				instance->max_fw_cmds - MEGASAS_INT_CMDS;
-
-		spin_unlock_irqrestore(instance->host->host_lock, flags);
-	}
-}
-
-static void
-megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
-
-static void
-process_fw_state_change_wq(struct work_struct *work);
-
-void megasas_do_ocr(struct megasas_instance *instance)
-{
-	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
-	(instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
-	(instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
-		*instance->consumer     = MEGASAS_ADPRESET_INPROG_SIGN;
-	}
-	instance->instancet->disable_intr(instance->reg_set);
-	instance->adprecovery   = MEGASAS_ADPRESET_SM_INFAULT;
-	instance->issuepend_done = 0;
-
-	atomic_set(&instance->fw_outstanding, 0);
-	megasas_internal_reset_defer_cmds(instance);
-	process_fw_state_change_wq(&instance->work_init);
-}
-
-/**
- * megasas_wait_for_outstanding -	Wait for all outstanding cmds
- * @instance:				Adapter soft state
- *
- * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to
- * complete all its outstanding commands. Returns error if one or more IOs
- * are pending after this time period. It also marks the controller dead.
- */
-static int megasas_wait_for_outstanding(struct megasas_instance *instance)
-{
-	int i;
-	u32 reset_index;
-	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
-	u8 adprecovery;
-	unsigned long flags;
-	struct list_head clist_local;
-	struct megasas_cmd *reset_cmd;
-	u32 fw_state;
-	u8 kill_adapter_flag;
-
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	adprecovery = instance->adprecovery;
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-	if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
-
-		INIT_LIST_HEAD(&clist_local);
-		spin_lock_irqsave(&instance->hba_lock, flags);
-		list_splice_init(&instance->internal_reset_pending_q,
-				&clist_local);
-		spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-		printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
-		for (i = 0; i < wait_time; i++) {
-			msleep(1000);
-			spin_lock_irqsave(&instance->hba_lock, flags);
-			adprecovery = instance->adprecovery;
-			spin_unlock_irqrestore(&instance->hba_lock, flags);
-			if (adprecovery == MEGASAS_HBA_OPERATIONAL)
-				break;
-		}
-
-		if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
-			printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
-			spin_lock_irqsave(&instance->hba_lock, flags);
-			instance->adprecovery	= MEGASAS_HW_CRITICAL_ERROR;
-			spin_unlock_irqrestore(&instance->hba_lock, flags);
-			return FAILED;
-		}
-
-		reset_index	= 0;
-		while (!list_empty(&clist_local)) {
-			reset_cmd	= list_entry((&clist_local)->next,
-						struct megasas_cmd, list);
-			list_del_init(&reset_cmd->list);
-			if (reset_cmd->scmd) {
-				reset_cmd->scmd->result = DID_RESET << 16;
-				printk(KERN_NOTICE "%d:%p reset [%02x], %#lx\n",
-					reset_index, reset_cmd,
-					reset_cmd->scmd->cmnd[0],
-					reset_cmd->scmd->serial_number);
-
-				reset_cmd->scmd->scsi_done(reset_cmd->scmd);
-				megasas_return_cmd(instance, reset_cmd);
-			} else if (reset_cmd->sync_cmd) {
-				printk(KERN_NOTICE "megasas:%p synch cmds"
-						"reset queue\n",
-						reset_cmd);
-
-				reset_cmd->cmd_status = ENODATA;
-				instance->instancet->fire_cmd(instance,
-						reset_cmd->frame_phys_addr,
-						0, instance->reg_set);
-			} else {
-				printk(KERN_NOTICE "megasas: %p unexpected"
-					"cmds lst\n",
-					reset_cmd);
-			}
-			reset_index++;
-		}
-
-		return SUCCESS;
-	}
-
-	for (i = 0; i < wait_time; i++) {
-
-		int outstanding = atomic_read(&instance->fw_outstanding);
-
-		if (!outstanding)
-			break;
-
-		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
-			printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
-			       "commands to complete\n",i,outstanding);
-			/*
-			 * Call cmd completion routine. Cmd to be
-			 * be completed directly without depending on isr.
-			 */
-			megasas_complete_cmd_dpc((unsigned long)instance);
-		}
-
-		msleep(1000);
-	}
-
-	i = 0;
-	kill_adapter_flag = 0;
-	do {
-		fw_state = instance->instancet->read_fw_status_reg(
-					instance->reg_set) & MFI_STATE_MASK;
-		if ((fw_state == MFI_STATE_FAULT) &&
-			(instance->disableOnlineCtrlReset == 0)) {
-			if (i == 3) {
-				kill_adapter_flag = 2;
-				break;
-			}
-			megasas_do_ocr(instance);
-			kill_adapter_flag = 1;
-
-			/* wait for 1 secs to let FW finish the pending cmds */
-			msleep(1000);
-		}
-		i++;
-	} while (i <= 3);
-
-	if (atomic_read(&instance->fw_outstanding) &&
-					!kill_adapter_flag) {
-		if (instance->disableOnlineCtrlReset == 0) {
-
-			megasas_do_ocr(instance);
-
-			/* wait for 5 secs to let FW finish the pending cmds */
-			for (i = 0; i < wait_time; i++) {
-				int outstanding =
-					atomic_read(&instance->fw_outstanding);
-				if (!outstanding)
-					return SUCCESS;
-				msleep(1000);
-			}
-		}
-	}
-
-	if (atomic_read(&instance->fw_outstanding) ||
-					(kill_adapter_flag == 2)) {
-		printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
-		/*
-		* Send signal to FW to stop processing any pending cmds.
-		* The controller will be taken offline by the OS now.
-		*/
-		if ((instance->pdev->device ==
-			PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-			(instance->pdev->device ==
-			PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
-			writel(MFI_STOP_ADP,
-				&instance->reg_set->reserved_0[0]);
-		} else {
-			writel(MFI_STOP_ADP,
-				&instance->reg_set->inbound_doorbell);
-		}
-		megasas_dump_pending_frames(instance);
-		spin_lock_irqsave(&instance->hba_lock, flags);
-		instance->adprecovery	= MEGASAS_HW_CRITICAL_ERROR;
-		spin_unlock_irqrestore(&instance->hba_lock, flags);
-		return FAILED;
-	}
-
-	printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
-
-	return SUCCESS;
-}
-
-/**
- * megasas_generic_reset -	Generic reset routine
- * @scmd:			Mid-layer SCSI command
- *
- * This routine implements a generic reset handler for device, bus and host
- * reset requests. Device, bus and host specific reset handlers can use this
- * function after they do their specific tasks.
- */
-static int megasas_generic_reset(struct scsi_cmnd *scmd)
-{
-	int ret_val;
-	struct megasas_instance *instance;
-
-	instance = (struct megasas_instance *)scmd->device->host->hostdata;
-
-	scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n",
-		 scmd->serial_number, scmd->cmnd[0], scmd->retries);
-
-	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
-		printk(KERN_ERR "megasas: cannot recover from previous reset "
-		       "failures\n");
-		return FAILED;
-	}
-
-	ret_val = megasas_wait_for_outstanding(instance);
-	if (ret_val == SUCCESS)
-		printk(KERN_NOTICE "megasas: reset successful \n");
-	else
-		printk(KERN_ERR "megasas: failed to do reset\n");
-
-	return ret_val;
-}
-
-/**
- * megasas_reset_timer - quiesce the adapter if required
- * @scmd:		scsi cmnd
- *
- * Sets the FW busy flag and reduces the host->can_queue if the
- * cmd has not been completed within the timeout period.
- */
-static enum
-blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
-{
-	struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr;
-	struct megasas_instance *instance;
-	unsigned long flags;
-
-	if (time_after(jiffies, scmd->jiffies_at_alloc +
-				(MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
-		return BLK_EH_NOT_HANDLED;
-	}
-
-	instance = cmd->instance;
-	if (!(instance->flag & MEGASAS_FW_BUSY)) {
-		/* FW is busy, throttle IO */
-		spin_lock_irqsave(instance->host->host_lock, flags);
-
-		instance->host->can_queue = 16;
-		instance->last_time = jiffies;
-		instance->flag |= MEGASAS_FW_BUSY;
-
-		spin_unlock_irqrestore(instance->host->host_lock, flags);
-	}
-	return BLK_EH_RESET_TIMER;
-}
-
-/**
- * megasas_reset_device -	Device reset handler entry point
- */
-static int megasas_reset_device(struct scsi_cmnd *scmd)
-{
-	int ret;
-
-	/*
-	 * First wait for all commands to complete
-	 */
-	ret = megasas_generic_reset(scmd);
-
-	return ret;
-}
-
-/**
- * megasas_reset_bus_host -	Bus & host reset handler entry point
- */
-static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
-{
-	int ret;
-
-	/*
-	 * First wait for all commands to complete
-	 */
-	ret = megasas_generic_reset(scmd);
-
-	return ret;
-}
-
-/**
- * megasas_bios_param - Returns disk geometry for a disk
- * @sdev: 		device handle
- * @bdev:		block device
- * @capacity:		drive capacity
- * @geom:		geometry parameters
- */
-static int
-megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
-		 sector_t capacity, int geom[])
-{
-	int heads;
-	int sectors;
-	sector_t cylinders;
-	unsigned long tmp;
-	/* Default heads (64) & sectors (32) */
-	heads = 64;
-	sectors = 32;
-
-	tmp = heads * sectors;
-	cylinders = capacity;
-
-	sector_div(cylinders, tmp);
-
-	/*
-	 * Handle extended translation size for logical drives > 1Gb
-	 */
-
-	if (capacity >= 0x200000) {
-		heads = 255;
-		sectors = 63;
-		tmp = heads*sectors;
-		cylinders = capacity;
-		sector_div(cylinders, tmp);
-	}
-
-	geom[0] = heads;
-	geom[1] = sectors;
-	geom[2] = cylinders;
-
-	return 0;
-}
-
-static void megasas_aen_polling(struct work_struct *work);
-
-/**
- * megasas_service_aen -	Processes an event notification
- * @instance:			Adapter soft state
- * @cmd:			AEN command completed by the ISR
- *
- * For AEN, driver sends a command down to FW that is held by the FW till an
- * event occurs. When an event of interest occurs, FW completes the command
- * that it was previously holding.
- *
- * This routines sends SIGIO signal to processes that have registered with the
- * driver for AEN.
- */
-static void
-megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
-{
-	unsigned long flags;
-	/*
-	 * Don't signal app if it is just an aborted previously registered aen
-	 */
-	if ((!cmd->abort_aen) && (instance->unload == 0)) {
-		spin_lock_irqsave(&poll_aen_lock, flags);
-		megasas_poll_wait_aen = 1;
-		spin_unlock_irqrestore(&poll_aen_lock, flags);
-		wake_up(&megasas_poll_wait);
-		kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
-	}
-	else
-		cmd->abort_aen = 0;
-
-	instance->aen_cmd = NULL;
-	megasas_return_cmd(instance, cmd);
-
-	if ((instance->unload == 0) &&
-		((instance->issuepend_done == 1))) {
-		struct megasas_aen_event *ev;
-		ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
-		if (!ev) {
-			printk(KERN_ERR "megasas_service_aen: out of memory\n");
-		} else {
-			ev->instance = instance;
-			instance->ev = ev;
-			INIT_WORK(&ev->hotplug_work, megasas_aen_polling);
-			schedule_delayed_work(
-				(struct delayed_work *)&ev->hotplug_work, 0);
-		}
-	}
-}
-
-/*
- * Scsi host template for megaraid_sas driver
- */
-static struct scsi_host_template megasas_template = {
-
-	.module = THIS_MODULE,
-	.name = "LSI SAS based MegaRAID driver",
-	.proc_name = "megaraid_sas",
-	.slave_configure = megasas_slave_configure,
-	.slave_alloc = megasas_slave_alloc,
-	.queuecommand = megasas_queue_command,
-	.eh_device_reset_handler = megasas_reset_device,
-	.eh_bus_reset_handler = megasas_reset_bus_host,
-	.eh_host_reset_handler = megasas_reset_bus_host,
-	.eh_timed_out = megasas_reset_timer,
-	.bios_param = megasas_bios_param,
-	.use_clustering = ENABLE_CLUSTERING,
-};
-
-/**
- * megasas_complete_int_cmd -	Completes an internal command
- * @instance:			Adapter soft state
- * @cmd:			Command to be completed
- *
- * The megasas_issue_blocked_cmd() function waits for a command to complete
- * after it issues a command. This function wakes up that waiting routine by
- * calling wake_up() on the wait queue.
- */
-static void
-megasas_complete_int_cmd(struct megasas_instance *instance,
-			 struct megasas_cmd *cmd)
-{
-	cmd->cmd_status = cmd->frame->io.cmd_status;
-
-	if (cmd->cmd_status == ENODATA) {
-		cmd->cmd_status = 0;
-	}
-	wake_up(&instance->int_cmd_wait_q);
-}
-
-/**
- * megasas_complete_abort -	Completes aborting a command
- * @instance:			Adapter soft state
- * @cmd:			Cmd that was issued to abort another cmd
- *
- * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 
- * after it issues an abort on a previously issued command. This function 
- * wakes up all functions waiting on the same wait queue.
- */
-static void
-megasas_complete_abort(struct megasas_instance *instance,
-		       struct megasas_cmd *cmd)
-{
-	if (cmd->sync_cmd) {
-		cmd->sync_cmd = 0;
-		cmd->cmd_status = 0;
-		wake_up(&instance->abort_cmd_wait_q);
-	}
-
-	return;
-}
-
-/**
- * megasas_complete_cmd -	Completes a command
- * @instance:			Adapter soft state
- * @cmd:			Command to be completed
- * @alt_status:			If non-zero, use this value as status to 
- * 				SCSI mid-layer instead of the value returned
- * 				by the FW. This should be used if caller wants
- * 				an alternate status (as in the case of aborted
- * 				commands)
- */
-static void
-megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
-		     u8 alt_status)
-{
-	int exception = 0;
-	struct megasas_header *hdr = &cmd->frame->hdr;
-	unsigned long flags;
-
-	/* flag for the retry reset */
-	cmd->retry_for_fw_reset = 0;
-
-	if (cmd->scmd)
-		cmd->scmd->SCp.ptr = NULL;
-
-	switch (hdr->cmd) {
-
-	case MFI_CMD_PD_SCSI_IO:
-	case MFI_CMD_LD_SCSI_IO:
-
-		/*
-		 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
-		 * issued either through an IO path or an IOCTL path. If it
-		 * was via IOCTL, we will send it to internal completion.
-		 */
-		if (cmd->sync_cmd) {
-			cmd->sync_cmd = 0;
-			megasas_complete_int_cmd(instance, cmd);
-			break;
-		}
-
-	case MFI_CMD_LD_READ:
-	case MFI_CMD_LD_WRITE:
-
-		if (alt_status) {
-			cmd->scmd->result = alt_status << 16;
-			exception = 1;
-		}
-
-		if (exception) {
-
-			atomic_dec(&instance->fw_outstanding);
-
-			scsi_dma_unmap(cmd->scmd);
-			cmd->scmd->scsi_done(cmd->scmd);
-			megasas_return_cmd(instance, cmd);
-
-			break;
-		}
-
-		switch (hdr->cmd_status) {
-
-		case MFI_STAT_OK:
-			cmd->scmd->result = DID_OK << 16;
-			break;
-
-		case MFI_STAT_SCSI_IO_FAILED:
-		case MFI_STAT_LD_INIT_IN_PROGRESS:
-			cmd->scmd->result =
-			    (DID_ERROR << 16) | hdr->scsi_status;
-			break;
-
-		case MFI_STAT_SCSI_DONE_WITH_ERROR:
-
-			cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
-
-			if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
-				memset(cmd->scmd->sense_buffer, 0,
-				       SCSI_SENSE_BUFFERSIZE);
-				memcpy(cmd->scmd->sense_buffer, cmd->sense,
-				       hdr->sense_len);
-
-				cmd->scmd->result |= DRIVER_SENSE << 24;
-			}
-
-			break;
-
-		case MFI_STAT_LD_OFFLINE:
-		case MFI_STAT_DEVICE_NOT_FOUND:
-			cmd->scmd->result = DID_BAD_TARGET << 16;
-			break;
-
-		default:
-			printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
-			       hdr->cmd_status);
-			cmd->scmd->result = DID_ERROR << 16;
-			break;
-		}
-
-		atomic_dec(&instance->fw_outstanding);
-
-		scsi_dma_unmap(cmd->scmd);
-		cmd->scmd->scsi_done(cmd->scmd);
-		megasas_return_cmd(instance, cmd);
-
-		break;
-
-	case MFI_CMD_SMP:
-	case MFI_CMD_STP:
-	case MFI_CMD_DCMD:
-		if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
-			cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
-			spin_lock_irqsave(&poll_aen_lock, flags);
-			megasas_poll_wait_aen = 0;
-			spin_unlock_irqrestore(&poll_aen_lock, flags);
-		}
-
-		/*
-		 * See if got an event notification
-		 */
-		if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
-			megasas_service_aen(instance, cmd);
-		else
-			megasas_complete_int_cmd(instance, cmd);
-
-		break;
-
-	case MFI_CMD_ABORT:
-		/*
-		 * Cmd issued to abort another cmd returned
-		 */
-		megasas_complete_abort(instance, cmd);
-		break;
-
-	default:
-		printk("megasas: Unknown command completed! [0x%X]\n",
-		       hdr->cmd);
-		break;
-	}
-}
-
-/**
- * megasas_issue_pending_cmds_again -	issue all pending cmds
- *                              	in FW again because of the fw reset
- * @instance:				Adapter soft state
- */
-static inline void
-megasas_issue_pending_cmds_again(struct megasas_instance *instance)
-{
-	struct megasas_cmd *cmd;
-	struct list_head clist_local;
-	union megasas_evt_class_locale class_locale;
-	unsigned long flags;
-	u32 seq_num;
-
-	INIT_LIST_HEAD(&clist_local);
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	list_splice_init(&instance->internal_reset_pending_q, &clist_local);
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-	while (!list_empty(&clist_local)) {
-		cmd	= list_entry((&clist_local)->next,
-					struct megasas_cmd, list);
-		list_del_init(&cmd->list);
-
-		if (cmd->sync_cmd || cmd->scmd) {
-			printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
-				"detected to be pending while HBA reset.\n",
-					cmd, cmd->scmd, cmd->sync_cmd);
-
-			cmd->retry_for_fw_reset++;
-
-			if (cmd->retry_for_fw_reset == 3) {
-				printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
-					"was tried multiple times during reset."
-					"Shutting down the HBA\n",
-					cmd, cmd->scmd, cmd->sync_cmd);
-				megaraid_sas_kill_hba(instance);
-
-				instance->adprecovery =
-						MEGASAS_HW_CRITICAL_ERROR;
-				return;
-			}
-		}
-
-		if (cmd->sync_cmd == 1) {
-			if (cmd->scmd) {
-				printk(KERN_NOTICE "megaraid_sas: unexpected"
-					"cmd attached to internal command!\n");
-			}
-			printk(KERN_NOTICE "megasas: %p synchronous cmd"
-						"on the internal reset queue,"
-						"issue it again.\n", cmd);
-			cmd->cmd_status = ENODATA;
-			instance->instancet->fire_cmd(instance,
-							cmd->frame_phys_addr ,
-							0, instance->reg_set);
-		} else if (cmd->scmd) {
-			printk(KERN_NOTICE "megasas: %p scsi cmd [%02x],%#lx"
-			"detected on the internal queue, issue again.\n",
-			cmd, cmd->scmd->cmnd[0], cmd->scmd->serial_number);
-
-			atomic_inc(&instance->fw_outstanding);
-			instance->instancet->fire_cmd(instance,
-					cmd->frame_phys_addr,
-					cmd->frame_count-1, instance->reg_set);
-		} else {
-			printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
-				"internal reset defer list while re-issue!!\n",
-				cmd);
-		}
-	}
-
-	if (instance->aen_cmd) {
-		printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
-		megasas_return_cmd(instance, instance->aen_cmd);
-
-		instance->aen_cmd	= NULL;
-	}
-
-	/*
-	* Initiate AEN (Asynchronous Event Notification)
-	*/
-	seq_num = instance->last_seq_num;
-	class_locale.members.reserved = 0;
-	class_locale.members.locale = MR_EVT_LOCALE_ALL;
-	class_locale.members.class = MR_EVT_CLASS_DEBUG;
-
-	megasas_register_aen(instance, seq_num, class_locale.word);
-}
-
-/**
- * Move the internal reset pending commands to a deferred queue.
- *
- * We move the commands pending at internal reset time to a
- * pending queue. This queue would be flushed after successful
- * completion of the internal reset sequence. if the internal reset
- * did not complete in time, the kernel reset handler would flush
- * these commands.
- **/
-static void
-megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
-{
-	struct megasas_cmd *cmd;
-	int i;
-	u32 max_cmd = instance->max_fw_cmds;
-	u32 defer_index;
-	unsigned long flags;
-
-	defer_index     = 0;
-	spin_lock_irqsave(&instance->cmd_pool_lock, flags);
-	for (i = 0; i < max_cmd; i++) {
-		cmd = instance->cmd_list[i];
-		if (cmd->sync_cmd == 1 || cmd->scmd) {
-			printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
-					"on the defer queue as internal\n",
-				defer_index, cmd, cmd->sync_cmd, cmd->scmd);
-
-			if (!list_empty(&cmd->list)) {
-				printk(KERN_NOTICE "megaraid_sas: ERROR while"
-					" moving this cmd:%p, %d %p, it was"
-					"discovered on some list?\n",
-					cmd, cmd->sync_cmd, cmd->scmd);
-
-				list_del_init(&cmd->list);
-			}
-			defer_index++;
-			list_add_tail(&cmd->list,
-				&instance->internal_reset_pending_q);
-		}
-	}
-	spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
-}
-
-
-static void
-process_fw_state_change_wq(struct work_struct *work)
-{
-	struct megasas_instance *instance =
-		container_of(work, struct megasas_instance, work_init);
-	u32 wait;
-	unsigned long flags;
-
-	if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
-		printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
-				instance->adprecovery);
-		return ;
-	}
-
-	if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
-		printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
-					"state, restarting it...\n");
-
-		instance->instancet->disable_intr(instance->reg_set);
-		atomic_set(&instance->fw_outstanding, 0);
-
-		atomic_set(&instance->fw_reset_no_pci_access, 1);
-		instance->instancet->adp_reset(instance, instance->reg_set);
-		atomic_set(&instance->fw_reset_no_pci_access, 0 );
-
-		printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
-					"initiating next stage...\n");
-
-		printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
-					"state 2 starting...\n");
-
-		/*waitting for about 20 second before start the second init*/
-		for (wait = 0; wait < 30; wait++) {
-			msleep(1000);
-		}
-
-		if (megasas_transition_to_ready(instance)) {
-			printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
-
-			megaraid_sas_kill_hba(instance);
-			instance->adprecovery	= MEGASAS_HW_CRITICAL_ERROR;
-			return ;
-		}
-
-		if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
-			(instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
-			(instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
-			) {
-			*instance->consumer = *instance->producer;
-		} else {
-			*instance->consumer = 0;
-			*instance->producer = 0;
-		}
-
-		megasas_issue_init_mfi(instance);
-
-		spin_lock_irqsave(&instance->hba_lock, flags);
-		instance->adprecovery	= MEGASAS_HBA_OPERATIONAL;
-		spin_unlock_irqrestore(&instance->hba_lock, flags);
-		instance->instancet->enable_intr(instance->reg_set);
-
-		megasas_issue_pending_cmds_again(instance);
-		instance->issuepend_done = 1;
-	}
-	return ;
-}
-
-/**
- * megasas_deplete_reply_queue -	Processes all completed commands
- * @instance:				Adapter soft state
- * @alt_status:				Alternate status to be returned to
- * 					SCSI mid-layer instead of the status
- * 					returned by the FW
- * Note: this must be called with hba lock held
- */
-static int
-megasas_deplete_reply_queue(struct megasas_instance *instance,
-					u8 alt_status)
-{
-	u32 mfiStatus;
-	u32 fw_state;
-
-	if ((mfiStatus = instance->instancet->check_reset(instance,
-					instance->reg_set)) == 1) {
-		return IRQ_HANDLED;
-	}
-
-	if ((mfiStatus = instance->instancet->clear_intr(
-						instance->reg_set)
-						) == 0) {
-		return IRQ_NONE;
-	}
-
-	instance->mfiStatus = mfiStatus;
-
-	if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
-		fw_state = instance->instancet->read_fw_status_reg(
-				instance->reg_set) & MFI_STATE_MASK;
-
-		if (fw_state != MFI_STATE_FAULT) {
-			printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
-						fw_state);
-		}
-
-		if ((fw_state == MFI_STATE_FAULT) &&
-				(instance->disableOnlineCtrlReset == 0)) {
-			printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
-
-			if ((instance->pdev->device ==
-					PCI_DEVICE_ID_LSI_SAS1064R) ||
-				(instance->pdev->device ==
-					PCI_DEVICE_ID_DELL_PERC5) ||
-				(instance->pdev->device ==
-					PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
-
-				*instance->consumer =
-					MEGASAS_ADPRESET_INPROG_SIGN;
-			}
-
-
-			instance->instancet->disable_intr(instance->reg_set);
-			instance->adprecovery	= MEGASAS_ADPRESET_SM_INFAULT;
-			instance->issuepend_done = 0;
-
-			atomic_set(&instance->fw_outstanding, 0);
-			megasas_internal_reset_defer_cmds(instance);
-
-			printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
-					fw_state, instance->adprecovery);
-
-			schedule_work(&instance->work_init);
-			return IRQ_HANDLED;
-
-		} else {
-			printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
-				fw_state, instance->disableOnlineCtrlReset);
-		}
-	}
-
-	tasklet_schedule(&instance->isr_tasklet);
-	return IRQ_HANDLED;
-}
-/**
- * megasas_isr - isr entry point
- */
-static irqreturn_t megasas_isr(int irq, void *devp)
-{
-	struct megasas_instance *instance;
-	unsigned long flags;
-	irqreturn_t	rc;
-
-	if (atomic_read(
-		&(((struct megasas_instance *)devp)->fw_reset_no_pci_access)))
-		return IRQ_HANDLED;
-
-	instance = (struct megasas_instance *)devp;
-
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	rc =  megasas_deplete_reply_queue(instance, DID_OK);
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-	return rc;
-}
-
-/**
- * megasas_transition_to_ready -	Move the FW to READY state
- * @instance:				Adapter soft state
- *
- * During the initialization, FW passes can potentially be in any one of
- * several possible states. If the FW in operational, waiting-for-handshake
- * states, driver must take steps to bring it to ready state. Otherwise, it
- * has to wait for the ready state.
- */
-static int
-megasas_transition_to_ready(struct megasas_instance* instance)
-{
-	int i;
-	u8 max_wait;
-	u32 fw_state;
-	u32 cur_state;
-	u32 abs_state, curr_abs_state;
-
-	fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
-
-	if (fw_state != MFI_STATE_READY)
- 		printk(KERN_INFO "megasas: Waiting for FW to come to ready"
- 		       " state\n");
-
-	while (fw_state != MFI_STATE_READY) {
-
-		abs_state =
-		instance->instancet->read_fw_status_reg(instance->reg_set);
-
-		switch (fw_state) {
-
-		case MFI_STATE_FAULT:
-
-			printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
-			return -ENODEV;
-
-		case MFI_STATE_WAIT_HANDSHAKE:
-			/*
-			 * Set the CLR bit in inbound doorbell
-			 */
-			if ((instance->pdev->device ==
-				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-				(instance->pdev->device ==
-				PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
-
-				writel(
-				  MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
-				  &instance->reg_set->reserved_0[0]);
-			} else {
-				writel(
-				    MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
-					&instance->reg_set->inbound_doorbell);
-			}
-
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_WAIT_HANDSHAKE;
-			break;
-
-		case MFI_STATE_BOOT_MESSAGE_PENDING:
-			if ((instance->pdev->device ==
-				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-			(instance->pdev->device ==
-				PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
-				writel(MFI_INIT_HOTPLUG,
-				&instance->reg_set->reserved_0[0]);
-			} else
-				writel(MFI_INIT_HOTPLUG,
-					&instance->reg_set->inbound_doorbell);
-
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
-			break;
-
-		case MFI_STATE_OPERATIONAL:
-			/*
-			 * Bring it to READY state; assuming max wait 10 secs
-			 */
-			instance->instancet->disable_intr(instance->reg_set);
-			if ((instance->pdev->device ==
-				PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-				(instance->pdev->device ==
-				PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
-				writel(MFI_RESET_FLAGS,
-					&instance->reg_set->reserved_0[0]);
-			} else
-				writel(MFI_RESET_FLAGS,
-					&instance->reg_set->inbound_doorbell);
-
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_OPERATIONAL;
-			break;
-
-		case MFI_STATE_UNDEFINED:
-			/*
-			 * This state should not last for more than 2 seconds
-			 */
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_UNDEFINED;
-			break;
-
-		case MFI_STATE_BB_INIT:
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_BB_INIT;
-			break;
-
-		case MFI_STATE_FW_INIT:
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_FW_INIT;
-			break;
-
-		case MFI_STATE_FW_INIT_2:
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_FW_INIT_2;
-			break;
-
-		case MFI_STATE_DEVICE_SCAN:
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_DEVICE_SCAN;
-			break;
-
-		case MFI_STATE_FLUSH_CACHE:
-			max_wait = MEGASAS_RESET_WAIT_TIME;
-			cur_state = MFI_STATE_FLUSH_CACHE;
-			break;
-
-		default:
-			printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
-			       fw_state);
-			return -ENODEV;
-		}
-
-		/*
-		 * The cur_state should not last for more than max_wait secs
-		 */
-		for (i = 0; i < (max_wait * 1000); i++) {
-			fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &  
-					MFI_STATE_MASK ;
-		curr_abs_state =
-		instance->instancet->read_fw_status_reg(instance->reg_set);
-
-			if (abs_state == curr_abs_state) {
-				msleep(1);
-			} else
-				break;
-		}
-
-		/*
-		 * Return error if fw_state hasn't changed after max_wait
-		 */
-		if (curr_abs_state == abs_state) {
-			printk(KERN_DEBUG "FW state [%d] hasn't changed "
-			       "in %d secs\n", fw_state, max_wait);
-			return -ENODEV;
-		}
-	}
- 	printk(KERN_INFO "megasas: FW now in Ready state\n");
-
-	return 0;
-}
-
-/**
- * megasas_teardown_frame_pool -	Destroy the cmd frame DMA pool
- * @instance:				Adapter soft state
- */
-static void megasas_teardown_frame_pool(struct megasas_instance *instance)
-{
-	int i;
-	u32 max_cmd = instance->max_fw_cmds;
-	struct megasas_cmd *cmd;
-
-	if (!instance->frame_dma_pool)
-		return;
-
-	/*
-	 * Return all frames to pool
-	 */
-	for (i = 0; i < max_cmd; i++) {
-
-		cmd = instance->cmd_list[i];
-
-		if (cmd->frame)
-			pci_pool_free(instance->frame_dma_pool, cmd->frame,
-				      cmd->frame_phys_addr);
-
-		if (cmd->sense)
-			pci_pool_free(instance->sense_dma_pool, cmd->sense,
-				      cmd->sense_phys_addr);
-	}
-
-	/*
-	 * Now destroy the pool itself
-	 */
-	pci_pool_destroy(instance->frame_dma_pool);
-	pci_pool_destroy(instance->sense_dma_pool);
-
-	instance->frame_dma_pool = NULL;
-	instance->sense_dma_pool = NULL;
-}
-
-/**
- * megasas_create_frame_pool -	Creates DMA pool for cmd frames
- * @instance:			Adapter soft state
- *
- * Each command packet has an embedded DMA memory buffer that is used for
- * filling MFI frame and the SG list that immediately follows the frame. This
- * function creates those DMA memory buffers for each command packet by using
- * PCI pool facility.
- */
-static int megasas_create_frame_pool(struct megasas_instance *instance)
-{
-	int i;
-	u32 max_cmd;
-	u32 sge_sz;
-	u32 sgl_sz;
-	u32 total_sz;
-	u32 frame_count;
-	struct megasas_cmd *cmd;
-
-	max_cmd = instance->max_fw_cmds;
-
-	/*
-	 * Size of our frame is 64 bytes for MFI frame, followed by max SG
-	 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
-	 */
-	sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
-	    sizeof(struct megasas_sge32);
-
-	if (instance->flag_ieee) {
-		sge_sz = sizeof(struct megasas_sge_skinny);
-	}
-
-	/*
-	 * Calculated the number of 64byte frames required for SGL
-	 */
-	sgl_sz = sge_sz * instance->max_num_sge;
-	frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
-	frame_count = 15;
-
-	/*
-	 * We need one extra frame for the MFI command
-	 */
-	frame_count++;
-
-	total_sz = MEGAMFI_FRAME_SIZE * frame_count;
-	/*
-	 * Use DMA pool facility provided by PCI layer
-	 */
-	instance->frame_dma_pool = pci_pool_create("megasas frame pool",
-						   instance->pdev, total_sz, 64,
-						   0);
-
-	if (!instance->frame_dma_pool) {
-		printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
-		return -ENOMEM;
-	}
-
-	instance->sense_dma_pool = pci_pool_create("megasas sense pool",
-						   instance->pdev, 128, 4, 0);
-
-	if (!instance->sense_dma_pool) {
-		printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
-
-		pci_pool_destroy(instance->frame_dma_pool);
-		instance->frame_dma_pool = NULL;
-
-		return -ENOMEM;
-	}
-
-	/*
-	 * Allocate and attach a frame to each of the commands in cmd_list.
-	 * By making cmd->index as the context instead of the &cmd, we can
-	 * always use 32bit context regardless of the architecture
-	 */
-	for (i = 0; i < max_cmd; i++) {
-
-		cmd = instance->cmd_list[i];
-
-		cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
-					    GFP_KERNEL, &cmd->frame_phys_addr);
-
-		cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
-					    GFP_KERNEL, &cmd->sense_phys_addr);
-
-		/*
-		 * megasas_teardown_frame_pool() takes care of freeing
-		 * whatever has been allocated
-		 */
-		if (!cmd->frame || !cmd->sense) {
-			printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
-			megasas_teardown_frame_pool(instance);
-			return -ENOMEM;
-		}
-
-		memset(cmd->frame, 0, total_sz);
-		cmd->frame->io.context = cmd->index;
-		cmd->frame->io.pad_0 = 0;
-	}
-
-	return 0;
-}
-
-/**
- * megasas_free_cmds -	Free all the cmds in the free cmd pool
- * @instance:		Adapter soft state
- */
-static void megasas_free_cmds(struct megasas_instance *instance)
-{
-	int i;
-	/* First free the MFI frame pool */
-	megasas_teardown_frame_pool(instance);
-
-	/* Free all the commands in the cmd_list */
-	for (i = 0; i < instance->max_fw_cmds; i++)
-		kfree(instance->cmd_list[i]);
-
-	/* Free the cmd_list buffer itself */
-	kfree(instance->cmd_list);
-	instance->cmd_list = NULL;
-
-	INIT_LIST_HEAD(&instance->cmd_pool);
-}
-
-/**
- * megasas_alloc_cmds -	Allocates the command packets
- * @instance:		Adapter soft state
- *
- * Each command that is issued to the FW, whether IO commands from the OS or
- * internal commands like IOCTLs, are wrapped in local data structure called
- * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
- * the FW.
- *
- * Each frame has a 32-bit field called context (tag). This context is used
- * to get back the megasas_cmd from the frame when a frame gets completed in
- * the ISR. Typically the address of the megasas_cmd itself would be used as
- * the context. But we wanted to keep the differences between 32 and 64 bit
- * systems to the mininum. We always use 32 bit integers for the context. In
- * this driver, the 32 bit values are the indices into an array cmd_list.
- * This array is used only to look up the megasas_cmd given the context. The
- * free commands themselves are maintained in a linked list called cmd_pool.
- */
-static int megasas_alloc_cmds(struct megasas_instance *instance)
-{
-	int i;
-	int j;
-	u32 max_cmd;
-	struct megasas_cmd *cmd;
-
-	max_cmd = instance->max_fw_cmds;
-
-	/*
-	 * instance->cmd_list is an array of struct megasas_cmd pointers.
-	 * Allocate the dynamic array first and then allocate individual
-	 * commands.
-	 */
-	instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
-
-	if (!instance->cmd_list) {
-		printk(KERN_DEBUG "megasas: out of memory\n");
-		return -ENOMEM;
-	}
-
-
-	for (i = 0; i < max_cmd; i++) {
-		instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
-						GFP_KERNEL);
-
-		if (!instance->cmd_list[i]) {
-
-			for (j = 0; j < i; j++)
-				kfree(instance->cmd_list[j]);
-
-			kfree(instance->cmd_list);
-			instance->cmd_list = NULL;
-
-			return -ENOMEM;
-		}
-	}
-
-	/*
-	 * Add all the commands to command pool (instance->cmd_pool)
-	 */
-	for (i = 0; i < max_cmd; i++) {
-		cmd = instance->cmd_list[i];
-		memset(cmd, 0, sizeof(struct megasas_cmd));
-		cmd->index = i;
-		cmd->scmd = NULL;
-		cmd->instance = instance;
-
-		list_add_tail(&cmd->list, &instance->cmd_pool);
-	}
-
-	/*
-	 * Create a frame pool and assign one frame to each cmd
-	 */
-	if (megasas_create_frame_pool(instance)) {
-		printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
-		megasas_free_cmds(instance);
-	}
-
-	return 0;
-}
-
-/*
- * megasas_get_pd_list_info -	Returns FW's pd_list structure
- * @instance:				Adapter soft state
- * @pd_list:				pd_list structure
- *
- * Issues an internal command (DCMD) to get the FW's controller PD
- * list structure.  This information is mainly used to find out SYSTEM
- * supported by the FW.
- */
-static int
-megasas_get_pd_list(struct megasas_instance *instance)
-{
-	int ret = 0, pd_index = 0;
-	struct megasas_cmd *cmd;
-	struct megasas_dcmd_frame *dcmd;
-	struct MR_PD_LIST *ci;
-	struct MR_PD_ADDRESS *pd_addr;
-	dma_addr_t ci_h = 0;
-
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd) {
-		printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
-		return -ENOMEM;
-	}
-
-	dcmd = &cmd->frame->dcmd;
-
-	ci = pci_alloc_consistent(instance->pdev,
-		  MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
-
-	if (!ci) {
-		printk(KERN_DEBUG "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);
-
-	dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
-	dcmd->mbox.b[1] = 0;
-	dcmd->cmd = MFI_CMD_DCMD;
-	dcmd->cmd_status = 0xFF;
-	dcmd->sge_count = 1;
-	dcmd->flags = MFI_FRAME_DIR_READ;
-	dcmd->timeout = 0;
-	dcmd->pad_0 = 0;
-	dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
-	dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
-	dcmd->sgl.sge32[0].phys_addr = ci_h;
-	dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
-
-	if (!megasas_issue_polled(instance, cmd)) {
-		ret = 0;
-	} else {
-		ret = -1;
-	}
-
-	/*
-	* the following function will get the instance PD LIST.
-	*/
-
-	pd_addr = ci->addr;
-
-	if ( ret == 0 &&
-		(ci->count <
-		  (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
-
-		memset(instance->pd_list, 0,
-			MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
-
-		for (pd_index = 0; pd_index < ci->count; pd_index++) {
-
-			instance->pd_list[pd_addr->deviceId].tid	=
-							pd_addr->deviceId;
-			instance->pd_list[pd_addr->deviceId].driveType	=
-							pd_addr->scsiDevType;
-			instance->pd_list[pd_addr->deviceId].driveState	=
-							MR_PD_STATE_SYSTEM;
-			pd_addr++;
-		}
-	}
-
-	pci_free_consistent(instance->pdev,
-				MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
-				ci, ci_h);
-	megasas_return_cmd(instance, cmd);
-
-	return ret;
-}
-
-/*
- * megasas_get_ld_list_info -	Returns FW's ld_list structure
- * @instance:				Adapter soft state
- * @ld_list:				ld_list structure
- *
- * Issues an internal command (DCMD) to get the FW's controller PD
- * list structure.  This information is mainly used to find out SYSTEM
- * supported by the FW.
- */
-static int
-megasas_get_ld_list(struct megasas_instance *instance)
-{
-	int ret = 0, ld_index = 0, ids = 0;
-	struct megasas_cmd *cmd;
-	struct megasas_dcmd_frame *dcmd;
-	struct MR_LD_LIST *ci;
-	dma_addr_t ci_h = 0;
-
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd) {
-		printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
-		return -ENOMEM;
-	}
-
-	dcmd = &cmd->frame->dcmd;
-
-	ci = pci_alloc_consistent(instance->pdev,
-				sizeof(struct MR_LD_LIST),
-				&ci_h);
-
-	if (!ci) {
-		printk(KERN_DEBUG "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);
-
-	dcmd->cmd = MFI_CMD_DCMD;
-	dcmd->cmd_status = 0xFF;
-	dcmd->sge_count = 1;
-	dcmd->flags = MFI_FRAME_DIR_READ;
-	dcmd->timeout = 0;
-	dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
-	dcmd->opcode = MR_DCMD_LD_GET_LIST;
-	dcmd->sgl.sge32[0].phys_addr = ci_h;
-	dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
-	dcmd->pad_0  = 0;
-
-	if (!megasas_issue_polled(instance, cmd)) {
-		ret = 0;
-	} else {
-		ret = -1;
-	}
-
-	/* the following function will get the instance PD LIST */
-
-	if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
-		memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
-
-		for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
-			if (ci->ldList[ld_index].state != 0) {
-				ids = ci->ldList[ld_index].ref.targetId;
-				instance->ld_ids[ids] =
-					ci->ldList[ld_index].ref.targetId;
-			}
-		}
-	}
-
-	pci_free_consistent(instance->pdev,
-				sizeof(struct MR_LD_LIST),
-				ci,
-				ci_h);
-
-	megasas_return_cmd(instance, cmd);
-	return ret;
-}
-
-/**
- * megasas_get_controller_info -	Returns FW's controller structure
- * @instance:				Adapter soft state
- * @ctrl_info:				Controller information structure
- *
- * Issues an internal command (DCMD) to get the FW's controller structure.
- * This information is mainly used to find out the maximum IO transfer per
- * command supported by the FW.
- */
-static int
-megasas_get_ctrl_info(struct megasas_instance *instance,
-		      struct megasas_ctrl_info *ctrl_info)
-{
-	int ret = 0;
-	struct megasas_cmd *cmd;
-	struct megasas_dcmd_frame *dcmd;
-	struct megasas_ctrl_info *ci;
-	dma_addr_t ci_h = 0;
-
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd) {
-		printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
-		return -ENOMEM;
-	}
-
-	dcmd = &cmd->frame->dcmd;
-
-	ci = pci_alloc_consistent(instance->pdev,
-				  sizeof(struct megasas_ctrl_info), &ci_h);
-
-	if (!ci) {
-		printk(KERN_DEBUG "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);
-
-	dcmd->cmd = MFI_CMD_DCMD;
-	dcmd->cmd_status = 0xFF;
-	dcmd->sge_count = 1;
-	dcmd->flags = MFI_FRAME_DIR_READ;
-	dcmd->timeout = 0;
-	dcmd->pad_0 = 0;
-	dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
-	dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
-	dcmd->sgl.sge32[0].phys_addr = ci_h;
-	dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
-
-	if (!megasas_issue_polled(instance, cmd)) {
-		ret = 0;
-		memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
-	} else {
-		ret = -1;
-	}
-
-	pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
-			    ci, ci_h);
-
-	megasas_return_cmd(instance, cmd);
-	return ret;
-}
-
-/**
- * megasas_issue_init_mfi -	Initializes the FW
- * @instance:		Adapter soft state
- *
- * Issues the INIT MFI cmd
- */
-static int
-megasas_issue_init_mfi(struct megasas_instance *instance)
-{
-	u32 context;
-
-	struct megasas_cmd *cmd;
-
-	struct megasas_init_frame *init_frame;
-	struct megasas_init_queue_info *initq_info;
-	dma_addr_t init_frame_h;
-	dma_addr_t initq_info_h;
-
-	/*
-	 * Prepare a init frame. Note the init frame points to queue info
-	 * structure. Each frame has SGL allocated after first 64 bytes. For
-	 * this frame - since we don't need any SGL - we use SGL's space as
-	 * queue info structure
-	 *
-	 * We will not get a NULL command below. We just created the pool.
-	 */
-	cmd = megasas_get_cmd(instance);
-
-	init_frame = (struct megasas_init_frame *)cmd->frame;
-	initq_info = (struct megasas_init_queue_info *)
-		((unsigned long)init_frame + 64);
-
-	init_frame_h = cmd->frame_phys_addr;
-	initq_info_h = init_frame_h + 64;
-
-	context = init_frame->context;
-	memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
-	memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
-	init_frame->context = context;
-
-	initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
-	initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
-
-	initq_info->producer_index_phys_addr_lo = instance->producer_h;
-	initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
-
-	init_frame->cmd = MFI_CMD_INIT;
-	init_frame->cmd_status = 0xFF;
-	init_frame->queue_info_new_phys_addr_lo = initq_info_h;
-
-	init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
-
-	/*
-	 * disable the intr before firing the init frame to FW
-	 */
-	instance->instancet->disable_intr(instance->reg_set);
-
-	/*
-	 * Issue the init frame in polled mode
-	 */
-
-	if (megasas_issue_polled(instance, cmd)) {
-		printk(KERN_ERR "megasas: Failed to init firmware\n");
-		megasas_return_cmd(instance, cmd);
-		goto fail_fw_init;
-	}
-
-	megasas_return_cmd(instance, cmd);
-
-	return 0;
-
-fail_fw_init:
-	return -EINVAL;
-}
-
-/**
- * megasas_start_timer - Initializes a timer object
- * @instance:		Adapter soft state
- * @timer:		timer object to be initialized
- * @fn:			timer function
- * @interval:		time interval between timer function call
- */
-static inline void
-megasas_start_timer(struct megasas_instance *instance,
-			struct timer_list *timer,
-			void *fn, unsigned long interval)
-{
-	init_timer(timer);
-	timer->expires = jiffies + interval;
-	timer->data = (unsigned long)instance;
-	timer->function = fn;
-	add_timer(timer);
-}
-
-/**
- * megasas_io_completion_timer - Timer fn
- * @instance_addr:	Address of adapter soft state
- *
- * Schedules tasklet for cmd completion
- * if poll_mode_io is set
- */
-static void
-megasas_io_completion_timer(unsigned long instance_addr)
-{
-	struct megasas_instance *instance =
-			(struct megasas_instance *)instance_addr;
-
-	if (atomic_read(&instance->fw_outstanding))
-		tasklet_schedule(&instance->isr_tasklet);
-
-	/* Restart timer */
-	if (poll_mode_io)
-		mod_timer(&instance->io_completion_timer,
-			jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
-}
-
-/**
- * megasas_init_mfi -	Initializes the FW
- * @instance:		Adapter soft state
- *
- * This is the main function for initializing MFI firmware.
- */
-static int megasas_init_mfi(struct megasas_instance *instance)
-{
-	u32 context_sz;
-	u32 reply_q_sz;
-	u32 max_sectors_1;
-	u32 max_sectors_2;
-	u32 tmp_sectors;
-	struct megasas_register_set __iomem *reg_set;
-	struct megasas_ctrl_info *ctrl_info;
-	/*
-	 * Map the message registers
-	 */
-	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
-		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
-		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0079GEN2)) {
-		instance->base_addr = pci_resource_start(instance->pdev, 1);
-	} else {
-		instance->base_addr = pci_resource_start(instance->pdev, 0);
-	}
-
-	if (pci_request_selected_regions(instance->pdev,
-		pci_select_bars(instance->pdev, IORESOURCE_MEM),
-		"megasas: LSI")) {
-		printk(KERN_DEBUG "megasas: IO memory region busy!\n");
-		return -EBUSY;
-	}
-
-	instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
-
-	if (!instance->reg_set) {
-		printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
-		goto fail_ioremap;
-	}
-
-	reg_set = instance->reg_set;
-
-	switch(instance->pdev->device)
-	{
-		case PCI_DEVICE_ID_LSI_SAS1078R:
-		case PCI_DEVICE_ID_LSI_SAS1078DE:
-			instance->instancet = &megasas_instance_template_ppc;
-			break;
-		case PCI_DEVICE_ID_LSI_SAS1078GEN2:
-		case PCI_DEVICE_ID_LSI_SAS0079GEN2:
-			instance->instancet = &megasas_instance_template_gen2;
-			break;
-		case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
-		case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
-			instance->instancet = &megasas_instance_template_skinny;
-			break;
-		case PCI_DEVICE_ID_LSI_SAS1064R:
-		case PCI_DEVICE_ID_DELL_PERC5:
-		default:
-			instance->instancet = &megasas_instance_template_xscale;
-			break;
-	}
-
-	/*
-	 * We expect the FW state to be READY
-	 */
-	if (megasas_transition_to_ready(instance))
-		goto fail_ready_state;
-
-	/*
-	 * Get various operational parameters from status register
-	 */
-	instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
-	/*
-	 * Reduce the max supported cmds by 1. This is to ensure that the
-	 * reply_q_sz (1 more than the max cmd that driver may send)
-	 * does not exceed max cmds that the FW can support
-	 */
-	instance->max_fw_cmds = instance->max_fw_cmds-1;
-	instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> 
-					0x10;
-	/*
-	 * Create a pool of commands
-	 */
-	if (megasas_alloc_cmds(instance))
-		goto fail_alloc_cmds;
-
-	/*
-	 * Allocate memory for reply queue. Length of reply queue should
-	 * be _one_ more than the maximum commands handled by the firmware.
-	 *
-	 * Note: When FW completes commands, it places corresponding contex
-	 * values in this circular reply queue. This circular queue is a fairly
-	 * typical producer-consumer queue. FW is the producer (of completed
-	 * commands) and the driver is the consumer.
-	 */
-	context_sz = sizeof(u32);
-	reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
-
-	instance->reply_queue = pci_alloc_consistent(instance->pdev,
-						     reply_q_sz,
-						     &instance->reply_queue_h);
-
-	if (!instance->reply_queue) {
-		printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
-		goto fail_reply_queue;
-	}
-
-	if (megasas_issue_init_mfi(instance))
-		goto fail_fw_init;
-
-	instance->fw_support_ieee = 0;
-	instance->fw_support_ieee =
-		(instance->instancet->read_fw_status_reg(reg_set) &
-		0x04000000);
-
-	printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
-			instance->fw_support_ieee);
-
-	if (instance->fw_support_ieee)
-		instance->flag_ieee = 1;
-
-	/** for passthrough
-	* the following function will get the PD LIST.
-	*/
-
-	memset(instance->pd_list, 0 ,
-		(MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
-	megasas_get_pd_list(instance);
-
-	memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
-	megasas_get_ld_list(instance);
-
-	ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
-
-	/*
-	 * Compute the max allowed sectors per IO: The controller info has two
-	 * limits on max sectors. Driver should use the minimum of these two.
-	 *
-	 * 1 << stripe_sz_ops.min = max sectors per strip
-	 *
-	 * Note that older firmwares ( < FW ver 30) didn't report information
-	 * to calculate max_sectors_1. So the number ended up as zero always.
-	 */
-	tmp_sectors = 0;
-	if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
-
-		max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
-		    ctrl_info->max_strips_per_io;
-		max_sectors_2 = ctrl_info->max_request_size;
-
-		tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
-		instance->disableOnlineCtrlReset =
-		ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
-	}
-
-	instance->max_sectors_per_req = instance->max_num_sge *
-						PAGE_SIZE / 512;
-	if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
-		instance->max_sectors_per_req = tmp_sectors;
-
-	kfree(ctrl_info);
-
-        /*
-	* Setup tasklet for cmd completion
-	*/
-
-	tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
-		(unsigned long)instance);
-
-	/* Initialize the cmd completion timer */
-	if (poll_mode_io)
-		megasas_start_timer(instance, &instance->io_completion_timer,
-				megasas_io_completion_timer,
-				MEGASAS_COMPLETION_TIMER_INTERVAL);
-	return 0;
-
-      fail_fw_init:
-
-	pci_free_consistent(instance->pdev, reply_q_sz,
-			    instance->reply_queue, instance->reply_queue_h);
-      fail_reply_queue:
-	megasas_free_cmds(instance);
-
-      fail_alloc_cmds:
-      fail_ready_state:
-	iounmap(instance->reg_set);
-
-      fail_ioremap:
-	pci_release_selected_regions(instance->pdev,
-		pci_select_bars(instance->pdev, IORESOURCE_MEM));
-
-	return -EINVAL;
-}
-
-/**
- * megasas_release_mfi -	Reverses the FW initialization
- * @intance:			Adapter soft state
- */
-static void megasas_release_mfi(struct megasas_instance *instance)
-{
-	u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1);
-
-	pci_free_consistent(instance->pdev, reply_q_sz,
-			    instance->reply_queue, instance->reply_queue_h);
-
-	megasas_free_cmds(instance);
-
-	iounmap(instance->reg_set);
-
-	pci_release_selected_regions(instance->pdev,
-		pci_select_bars(instance->pdev, IORESOURCE_MEM));
-}
-
-/**
- * megasas_get_seq_num -	Gets latest event sequence numbers
- * @instance:			Adapter soft state
- * @eli:			FW event log sequence numbers information
- *
- * FW maintains a log of all events in a non-volatile area. Upper layers would
- * usually find out the latest sequence number of the events, the seq number at
- * the boot etc. They would "read" all the events below the latest seq number
- * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
- * number), they would subsribe to AEN (asynchronous event notification) and
- * wait for the events to happen.
- */
-static int
-megasas_get_seq_num(struct megasas_instance *instance,
-		    struct megasas_evt_log_info *eli)
-{
-	struct megasas_cmd *cmd;
-	struct megasas_dcmd_frame *dcmd;
-	struct megasas_evt_log_info *el_info;
-	dma_addr_t el_info_h = 0;
-
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd) {
-		return -ENOMEM;
-	}
-
-	dcmd = &cmd->frame->dcmd;
-	el_info = pci_alloc_consistent(instance->pdev,
-				       sizeof(struct megasas_evt_log_info),
-				       &el_info_h);
-
-	if (!el_info) {
-		megasas_return_cmd(instance, cmd);
-		return -ENOMEM;
-	}
-
-	memset(el_info, 0, sizeof(*el_info));
-	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
-
-	dcmd->cmd = MFI_CMD_DCMD;
-	dcmd->cmd_status = 0x0;
-	dcmd->sge_count = 1;
-	dcmd->flags = MFI_FRAME_DIR_READ;
-	dcmd->timeout = 0;
-	dcmd->pad_0 = 0;
-	dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
-	dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
-	dcmd->sgl.sge32[0].phys_addr = el_info_h;
-	dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
-
-	megasas_issue_blocked_cmd(instance, cmd);
-
-	/*
-	 * Copy the data back into callers buffer
-	 */
-	memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
-
-	pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
-			    el_info, el_info_h);
-
-	megasas_return_cmd(instance, cmd);
-
-	return 0;
-}
-
-/**
- * megasas_register_aen -	Registers for asynchronous event notification
- * @instance:			Adapter soft state
- * @seq_num:			The starting sequence number
- * @class_locale:		Class of the event
- *
- * This function subscribes for AEN for events beyond the @seq_num. It requests
- * to be notified if and only if the event is of type @class_locale
- */
-static int
-megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
-		     u32 class_locale_word)
-{
-	int ret_val;
-	struct megasas_cmd *cmd;
-	struct megasas_dcmd_frame *dcmd;
-	union megasas_evt_class_locale curr_aen;
-	union megasas_evt_class_locale prev_aen;
-
-	/*
-	 * If there an AEN pending already (aen_cmd), check if the
-	 * class_locale of that pending AEN is inclusive of the new
-	 * AEN request we currently have. If it is, then we don't have
-	 * to do anything. In other words, whichever events the current
-	 * AEN request is subscribing to, have already been subscribed
-	 * to.
-	 *
-	 * If the old_cmd is _not_ inclusive, then we have to abort
-	 * that command, form a class_locale that is superset of both
-	 * old and current and re-issue to the FW
-	 */
-
-	curr_aen.word = class_locale_word;
-
-	if (instance->aen_cmd) {
-
-		prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
-
-		/*
-		 * A class whose enum value is smaller is inclusive of all
-		 * higher values. If a PROGRESS (= -1) was previously
-		 * registered, then a new registration requests for higher
-		 * classes need not be sent to FW. They are automatically
-		 * included.
-		 *
-		 * Locale numbers don't have such hierarchy. They are bitmap
-		 * values
-		 */
-		if ((prev_aen.members.class <= curr_aen.members.class) &&
-		    !((prev_aen.members.locale & curr_aen.members.locale) ^
-		      curr_aen.members.locale)) {
-			/*
-			 * Previously issued event registration includes
-			 * current request. Nothing to do.
-			 */
-			return 0;
-		} else {
-			curr_aen.members.locale |= prev_aen.members.locale;
-
-			if (prev_aen.members.class < curr_aen.members.class)
-				curr_aen.members.class = prev_aen.members.class;
-
-			instance->aen_cmd->abort_aen = 1;
-			ret_val = megasas_issue_blocked_abort_cmd(instance,
-								  instance->
-								  aen_cmd);
-
-			if (ret_val) {
-				printk(KERN_DEBUG "megasas: Failed to abort "
-				       "previous AEN command\n");
-				return ret_val;
-			}
-		}
-	}
-
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd)
-		return -ENOMEM;
-
-	dcmd = &cmd->frame->dcmd;
-
-	memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
-
-	/*
-	 * Prepare DCMD for aen registration
-	 */
-	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
-
-	dcmd->cmd = MFI_CMD_DCMD;
-	dcmd->cmd_status = 0x0;
-	dcmd->sge_count = 1;
-	dcmd->flags = MFI_FRAME_DIR_READ;
-	dcmd->timeout = 0;
-	dcmd->pad_0 = 0;
-	instance->last_seq_num = seq_num;
-	dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
-	dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
-	dcmd->mbox.w[0] = seq_num;
-	dcmd->mbox.w[1] = curr_aen.word;
-	dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
-	dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
-
-	if (instance->aen_cmd != NULL) {
-		megasas_return_cmd(instance, cmd);
-		return 0;
-	}
-
-	/*
-	 * Store reference to the cmd used to register for AEN. When an
-	 * application wants us to register for AEN, we have to abort this
-	 * cmd and re-register with a new EVENT LOCALE supplied by that app
-	 */
-	instance->aen_cmd = cmd;
-
-	/*
-	 * Issue the aen registration frame
-	 */
-	instance->instancet->fire_cmd(instance,
-			cmd->frame_phys_addr, 0, instance->reg_set);
-
-	return 0;
-}
-
-/**
- * megasas_start_aen -	Subscribes to AEN during driver load time
- * @instance:		Adapter soft state
- */
-static int megasas_start_aen(struct megasas_instance *instance)
-{
-	struct megasas_evt_log_info eli;
-	union megasas_evt_class_locale class_locale;
-
-	/*
-	 * Get the latest sequence number from FW
-	 */
-	memset(&eli, 0, sizeof(eli));
-
-	if (megasas_get_seq_num(instance, &eli))
-		return -1;
-
-	/*
-	 * Register AEN with FW for latest sequence number plus 1
-	 */
-	class_locale.members.reserved = 0;
-	class_locale.members.locale = MR_EVT_LOCALE_ALL;
-	class_locale.members.class = MR_EVT_CLASS_DEBUG;
-
-	return megasas_register_aen(instance, eli.newest_seq_num + 1,
-				    class_locale.word);
-}
-
-/**
- * megasas_io_attach -	Attaches this driver to SCSI mid-layer
- * @instance:		Adapter soft state
- */
-static int megasas_io_attach(struct megasas_instance *instance)
-{
-	struct Scsi_Host *host = instance->host;
-
-	/*
-	 * Export parameters required by SCSI mid-layer
-	 */
-	host->irq = instance->pdev->irq;
-	host->unique_id = instance->unique_id;
-	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
-		(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
-		host->can_queue =
-			instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
-	} else
-		host->can_queue =
-			instance->max_fw_cmds - MEGASAS_INT_CMDS;
-	host->this_id = instance->init_id;
-	host->sg_tablesize = instance->max_num_sge;
-	/*
-	 * Check if the module parameter value for max_sectors can be used
-	 */
-	if (max_sectors && max_sectors < instance->max_sectors_per_req)
-		instance->max_sectors_per_req = max_sectors;
-	else {
-		if (max_sectors) {
-			if (((instance->pdev->device ==
-				PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
-				(instance->pdev->device ==
-				PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
-				(max_sectors <= MEGASAS_MAX_SECTORS)) {
-				instance->max_sectors_per_req = max_sectors;
-			} else {
-			printk(KERN_INFO "megasas: max_sectors should be > 0"
-				"and <= %d (or < 1MB for GEN2 controller)\n",
-				instance->max_sectors_per_req);
-			}
-		}
-	}
-
-	host->max_sectors = instance->max_sectors_per_req;
-	host->cmd_per_lun = 128;
-	host->max_channel = MEGASAS_MAX_CHANNELS - 1;
-	host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
-	host->max_lun = MEGASAS_MAX_LUN;
-	host->max_cmd_len = 16;
-
-	/*
-	 * Notify the mid-layer about the new controller
-	 */
-	if (scsi_add_host(host, &instance->pdev->dev)) {
-		printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
-		return -ENODEV;
-	}
-
-	/*
-	 * Trigger SCSI to scan our drives
-	 */
-	scsi_scan_host(host);
-	return 0;
-}
-
-static int
-megasas_set_dma_mask(struct pci_dev *pdev)
-{
-	/*
-	 * All our contollers are capable of performing 64-bit DMA
-	 */
-	if (IS_DMA64) {
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
-
-			if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
-				goto fail_set_dma_mask;
-		}
-	} else {
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
-			goto fail_set_dma_mask;
-	}
-	return 0;
-
-fail_set_dma_mask:
-	return 1;
-}
-
-/**
- * megasas_probe_one -	PCI hotplug entry point
- * @pdev:		PCI device structure
- * @id:			PCI ids of supported hotplugged adapter	
- */
-static int __devinit
-megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
-{
-	int rval;
-	struct Scsi_Host *host;
-	struct megasas_instance *instance;
-
-	/*
-	 * Announce PCI information
-	 */
-	printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
-	       pdev->vendor, pdev->device, pdev->subsystem_vendor,
-	       pdev->subsystem_device);
-
-	printk("bus %d:slot %d:func %d\n",
-	       pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
-
-	/*
-	 * PCI prepping: enable device set bus mastering and dma mask
-	 */
-	rval = pci_enable_device_mem(pdev);
-
-	if (rval) {
-		return rval;
-	}
-
-	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));
-
-	if (!host) {
-		printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
-		goto fail_alloc_instance;
-	}
-
-	instance = (struct megasas_instance *)host->hostdata;
-	memset(instance, 0, sizeof(*instance));
-	atomic_set( &instance->fw_reset_no_pci_access, 0 );
-
-	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) {
-		printk(KERN_DEBUG "megasas: Failed to allocate memory for "
-		       "producer, consumer\n");
-		goto fail_alloc_dma_buf;
-	}
-
-	*instance->producer = 0;
-	*instance->consumer = 0;
-	megasas_poll_wait_aen = 0;
-	instance->flag_ieee = 0;
-	instance->ev = NULL;
-	instance->issuepend_done = 1;
-	instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
-	megasas_poll_wait_aen = 0;
-
-	instance->evt_detail = pci_alloc_consistent(pdev,
-						    sizeof(struct
-							   megasas_evt_detail),
-						    &instance->evt_detail_h);
-
-	if (!instance->evt_detail) {
-		printk(KERN_DEBUG "megasas: Failed to allocate memory for "
-		       "event detail structure\n");
-		goto fail_alloc_dma_buf;
-	}
-
-	/*
-	 * 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->cmd_pool_lock);
-	spin_lock_init(&instance->hba_lock);
-	spin_lock_init(&instance->completion_lock);
-	spin_lock_init(&poll_aen_lock);
-
-	mutex_init(&instance->aen_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;
-		sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
-	} else
-		sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
-
-	megasas_dbg_lvl = 0;
-	instance->flag = 0;
-	instance->unload = 1;
-	instance->last_time = 0;
-	instance->disableOnlineCtrlReset = 1;
-
-	INIT_WORK(&instance->work_init, process_fw_state_change_wq);
-
-	/*
-	 * Initialize MFI Firmware
-	 */
-	if (megasas_init_mfi(instance))
-		goto fail_init_mfi;
-
-	/*
-	 * Register IRQ
-	 */
-	if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, "megasas", instance)) {
-		printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
-		goto fail_irq;
-	}
-
-	instance->instancet->enable_intr(instance->reg_set);
-
-	/*
-	 * Store instance in PCI softstate
-	 */
-	pci_set_drvdata(pdev, instance);
-
-	/*
-	 * Add this controller to megasas_mgmt_info structure so that it
-	 * can be exported to management applications
-	 */
-	megasas_mgmt_info.count++;
-	megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
-	megasas_mgmt_info.max_index++;
-
-	/*
-	 * Initiate AEN (Asynchronous Event Notification)
-	 */
-	if (megasas_start_aen(instance)) {
-		printk(KERN_DEBUG "megasas: start aen failed\n");
-		goto fail_start_aen;
-	}
-
-	/*
-	 * Register with SCSI mid-layer
-	 */
-	if (megasas_io_attach(instance))
-		goto fail_io_attach;
-
-	instance->unload = 0;
-	return 0;
-
-      fail_start_aen:
-      fail_io_attach:
-	megasas_mgmt_info.count--;
-	megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
-	megasas_mgmt_info.max_index--;
-
-	pci_set_drvdata(pdev, NULL);
-	instance->instancet->disable_intr(instance->reg_set);
-	free_irq(instance->pdev->irq, instance);
-
-	megasas_release_mfi(instance);
-
-      fail_irq:
-      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->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);
-	scsi_host_put(host);
-
-      fail_alloc_instance:
-      fail_set_dma_mask:
-	pci_disable_device(pdev);
-
-	return -ENODEV;
-}
-
-/**
- * megasas_flush_cache -	Requests FW to flush all its caches
- * @instance:			Adapter soft state
- */
-static void megasas_flush_cache(struct megasas_instance *instance)
-{
-	struct megasas_cmd *cmd;
-	struct megasas_dcmd_frame *dcmd;
-
-	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
-		return;
-
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd)
-		return;
-
-	dcmd = &cmd->frame->dcmd;
-
-	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
-
-	dcmd->cmd = MFI_CMD_DCMD;
-	dcmd->cmd_status = 0x0;
-	dcmd->sge_count = 0;
-	dcmd->flags = MFI_FRAME_DIR_NONE;
-	dcmd->timeout = 0;
-	dcmd->pad_0 = 0;
-	dcmd->data_xfer_len = 0;
-	dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
-	dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
-
-	megasas_issue_blocked_cmd(instance, cmd);
-
-	megasas_return_cmd(instance, cmd);
-
-	return;
-}
-
-/**
- * megasas_shutdown_controller -	Instructs FW to shutdown the controller
- * @instance:				Adapter soft state
- * @opcode:				Shutdown/Hibernate
- */
-static void megasas_shutdown_controller(struct megasas_instance *instance,
-					u32 opcode)
-{
-	struct megasas_cmd *cmd;
-	struct megasas_dcmd_frame *dcmd;
-
-	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
-		return;
-
-	cmd = megasas_get_cmd(instance);
-
-	if (!cmd)
-		return;
-
-	if (instance->aen_cmd)
-		megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
-
-	dcmd = &cmd->frame->dcmd;
-
-	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
-
-	dcmd->cmd = MFI_CMD_DCMD;
-	dcmd->cmd_status = 0x0;
-	dcmd->sge_count = 0;
-	dcmd->flags = MFI_FRAME_DIR_NONE;
-	dcmd->timeout = 0;
-	dcmd->pad_0 = 0;
-	dcmd->data_xfer_len = 0;
-	dcmd->opcode = opcode;
-
-	megasas_issue_blocked_cmd(instance, cmd);
-
-	megasas_return_cmd(instance, cmd);
-
-	return;
-}
-
-#ifdef CONFIG_PM
-/**
- * megasas_suspend -	driver suspend entry point
- * @pdev:		PCI device structure
- * @state:		PCI power state to suspend routine
- */
-static int
-megasas_suspend(struct pci_dev *pdev, pm_message_t state)
-{
-	struct Scsi_Host *host;
-	struct megasas_instance *instance;
-
-	instance = pci_get_drvdata(pdev);
-	host = instance->host;
-	instance->unload = 1;
-
-	if (poll_mode_io)
-		del_timer_sync(&instance->io_completion_timer);
-
-	megasas_flush_cache(instance);
-	megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
-
-	/* cancel the delayed work if this work still in queue */
-	if (instance->ev != NULL) {
-		struct megasas_aen_event *ev = instance->ev;
-		cancel_delayed_work(
-			(struct delayed_work *)&ev->hotplug_work);
-		flush_scheduled_work();
-		instance->ev = NULL;
-	}
-
-	tasklet_kill(&instance->isr_tasklet);
-
-	pci_set_drvdata(instance->pdev, instance);
-	instance->instancet->disable_intr(instance->reg_set);
-	free_irq(instance->pdev->irq, instance);
-
-	pci_save_state(pdev);
-	pci_disable_device(pdev);
-
-	pci_set_power_state(pdev, pci_choose_state(pdev, state));
-
-	return 0;
-}
-
-/**
- * megasas_resume-      driver resume entry point
- * @pdev:               PCI device structure
- */
-static int
-megasas_resume(struct pci_dev *pdev)
-{
-	int rval;
-	struct Scsi_Host *host;
-	struct megasas_instance *instance;
-
-	instance = pci_get_drvdata(pdev);
-	host = instance->host;
-	pci_set_power_state(pdev, PCI_D0);
-	pci_enable_wake(pdev, PCI_D0, 0);
-	pci_restore_state(pdev);
-
-	/*
-	 * PCI prepping: enable device set bus mastering and dma mask
-	 */
-	rval = pci_enable_device_mem(pdev);
-
-	if (rval) {
-		printk(KERN_ERR "megasas: Enable device failed\n");
-		return rval;
-	}
-
-	pci_set_master(pdev);
-
-	if (megasas_set_dma_mask(pdev))
-		goto fail_set_dma_mask;
-
-	/*
-	 * Initialize MFI Firmware
-	 */
-
-	*instance->producer = 0;
-	*instance->consumer = 0;
-
-	atomic_set(&instance->fw_outstanding, 0);
-
-	/*
-	 * We expect the FW state to be READY
-	 */
-	if (megasas_transition_to_ready(instance))
-		goto fail_ready_state;
-
-	if (megasas_issue_init_mfi(instance))
-		goto fail_init_mfi;
-
-	tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
-			(unsigned long)instance);
-
-	/*
-	 * Register IRQ
-	 */
-	if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED,
-		"megasas", instance)) {
-		printk(KERN_ERR "megasas: Failed to register IRQ\n");
-		goto fail_irq;
-	}
-
-	instance->instancet->enable_intr(instance->reg_set);
-
-	/*
-	 * Initiate AEN (Asynchronous Event Notification)
-	 */
-	if (megasas_start_aen(instance))
-		printk(KERN_ERR "megasas: Start AEN failed\n");
-
-	/* Initialize the cmd completion timer */
-	if (poll_mode_io)
-		megasas_start_timer(instance, &instance->io_completion_timer,
-				megasas_io_completion_timer,
-				MEGASAS_COMPLETION_TIMER_INTERVAL);
-	instance->unload = 0;
-
-	return 0;
-
-fail_irq:
-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->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);
-	scsi_host_put(host);
-
-fail_set_dma_mask:
-fail_ready_state:
-
-	pci_disable_device(pdev);
-
-	return -ENODEV;
-}
-#else
-#define megasas_suspend	NULL
-#define megasas_resume	NULL
-#endif
-
-/**
- * megasas_detach_one -	PCI hot"un"plug entry point
- * @pdev:		PCI device structure
- */
-static void __devexit megasas_detach_one(struct pci_dev *pdev)
-{
-	int i;
-	struct Scsi_Host *host;
-	struct megasas_instance *instance;
-
-	instance = pci_get_drvdata(pdev);
-	instance->unload = 1;
-	host = instance->host;
-
-	if (poll_mode_io)
-		del_timer_sync(&instance->io_completion_timer);
-
-	scsi_remove_host(instance->host);
-	megasas_flush_cache(instance);
-	megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
-
-	/* cancel the delayed work if this work still in queue*/
-	if (instance->ev != NULL) {
-		struct megasas_aen_event *ev = instance->ev;
-		cancel_delayed_work(
-			(struct delayed_work *)&ev->hotplug_work);
-		flush_scheduled_work();
-		instance->ev = NULL;
-	}
-
-	tasklet_kill(&instance->isr_tasklet);
-
-	/*
-	 * Take the instance off the instance array. Note that we will not
-	 * decrement the max_index. We let this array be sparse array
-	 */
-	for (i = 0; i < megasas_mgmt_info.max_index; i++) {
-		if (megasas_mgmt_info.instance[i] == instance) {
-			megasas_mgmt_info.count--;
-			megasas_mgmt_info.instance[i] = NULL;
-
-			break;
-		}
-	}
-
-	pci_set_drvdata(instance->pdev, NULL);
-
-	instance->instancet->disable_intr(instance->reg_set);
-
-	free_irq(instance->pdev->irq, instance);
-
-	megasas_release_mfi(instance);
-
-	pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
-			    instance->evt_detail, instance->evt_detail_h);
-
-	pci_free_consistent(pdev, sizeof(u32), instance->producer,
-			    instance->producer_h);
-
-	pci_free_consistent(pdev, sizeof(u32), instance->consumer,
-			    instance->consumer_h);
-
-	scsi_host_put(host);
-
-	pci_set_drvdata(pdev, NULL);
-
-	pci_disable_device(pdev);
-
-	return;
-}
-
-/**
- * megasas_shutdown -	Shutdown entry point
- * @device:		Generic device structure
- */
-static void megasas_shutdown(struct pci_dev *pdev)
-{
-	struct megasas_instance *instance = pci_get_drvdata(pdev);
-	instance->unload = 1;
-	megasas_flush_cache(instance);
-	megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
-}
-
-/**
- * megasas_mgmt_open -	char node "open" entry point
- */
-static int megasas_mgmt_open(struct inode *inode, struct file *filep)
-{
-	/*
-	 * Allow only those users with admin rights
-	 */
-	if (!capable(CAP_SYS_ADMIN))
-		return -EACCES;
-
-	return 0;
-}
-
-/**
- * megasas_mgmt_fasync -	Async notifier registration from applications
- *
- * This function adds the calling process to a driver global queue. When an
- * event occurs, SIGIO will be sent to all processes in this queue.
- */
-static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
-{
-	int rc;
-
-	mutex_lock(&megasas_async_queue_mutex);
-
-	rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
-
-	mutex_unlock(&megasas_async_queue_mutex);
-
-	if (rc >= 0) {
-		/* For sanity check when we get ioctl */
-		filep->private_data = filep;
-		return 0;
-	}
-
-	printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
-
-	return rc;
-}
-
-/**
- * megasas_mgmt_poll -  char node "poll" entry point
- * */
-static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
-{
-	unsigned int mask;
-	unsigned long flags;
-	poll_wait(file, &megasas_poll_wait, wait);
-	spin_lock_irqsave(&poll_aen_lock, flags);
-	if (megasas_poll_wait_aen)
-		mask =   (POLLIN | POLLRDNORM);
-	else
-		mask = 0;
-	spin_unlock_irqrestore(&poll_aen_lock, flags);
-	return mask;
-}
-
-/**
- * megasas_mgmt_fw_ioctl -	Issues management ioctls to FW
- * @instance:			Adapter soft state
- * @argp:			User's ioctl packet
- */
-static int
-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_cmd *cmd;
-	void *kbuff_arr[MAX_IOCTL_SGE];
-	dma_addr_t buf_handle = 0;
-	int error = 0, i;
-	void *sense = NULL;
-	dma_addr_t sense_handle;
-	unsigned long *sense_ptr;
-
-	memset(kbuff_arr, 0, sizeof(kbuff_arr));
-
-	if (ioc->sge_count > MAX_IOCTL_SGE) {
-		printk(KERN_DEBUG "megasas: SGE count [%d] >  max limit [%d]\n",
-		       ioc->sge_count, MAX_IOCTL_SGE);
-		return -EINVAL;
-	}
-
-	cmd = megasas_get_cmd(instance);
-	if (!cmd) {
-		printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
-		return -ENOMEM;
-	}
-
-	/*
-	 * User's IOCTL packet has 2 frames (maximum). Copy those two
-	 * frames into our cmd's frames. cmd->frame's context will get
-	 * overwritten when we copy from user's frames. So set that value
-	 * alone separately
-	 */
-	memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
-	cmd->frame->hdr.context = cmd->index;
-	cmd->frame->hdr.pad_0 = 0;
-
-	/*
-	 * The management interface between applications and the fw uses
-	 * MFI frames. E.g, RAID configuration changes, LD property changes
-	 * etc are accomplishes through different kinds of MFI frames. The
-	 * driver needs to care only about substituting user buffers with
-	 * 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);
-
-	/*
-	 * For each user buffer, create a mirror buffer and copy in
-	 */
-	for (i = 0; i < ioc->sge_count; i++) {
-		kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
-						    ioc->sgl[i].iov_len,
-						    &buf_handle, GFP_KERNEL);
-		if (!kbuff_arr[i]) {
-			printk(KERN_DEBUG "megasas: Failed to alloc "
-			       "kernel SGL buffer for IOCTL \n");
-			error = -ENOMEM;
-			goto out;
-		}
-
-		/*
-		 * We don't change the dma_coherent_mask, so
-		 * pci_alloc_consistent only returns 32bit addresses
-		 */
-		kern_sge32[i].phys_addr = (u32) buf_handle;
-		kern_sge32[i].length = ioc->sgl[i].iov_len;
-
-		/*
-		 * We created a kernel buffer corresponding to the
-		 * user buffer. Now copy in from the user buffer
-		 */
-		if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
-				   (u32) (ioc->sgl[i].iov_len))) {
-			error = -EFAULT;
-			goto out;
-		}
-	}
-
-	if (ioc->sense_len) {
-		sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
-					     &sense_handle, GFP_KERNEL);
-		if (!sense) {
-			error = -ENOMEM;
-			goto out;
-		}
-
-		sense_ptr =
-		(unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
-		*sense_ptr = sense_handle;
-	}
-
-	/*
-	 * Set the sync_cmd flag so that the ISR knows not to complete this
-	 * cmd to the SCSI mid-layer
-	 */
-	cmd->sync_cmd = 1;
-	megasas_issue_blocked_cmd(instance, cmd);
-	cmd->sync_cmd = 0;
-
-	/*
-	 * copy out the kernel buffers to user buffers
-	 */
-	for (i = 0; i < ioc->sge_count; i++) {
-		if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
-				 ioc->sgl[i].iov_len)) {
-			error = -EFAULT;
-			goto out;
-		}
-	}
-
-	/*
-	 * copy out the sense
-	 */
-	if (ioc->sense_len) {
-		/*
-		 * sense_ptr points to the location that has the user
-		 * sense buffer address
-		 */
-		sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
-				ioc->sense_off);
-
-		if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
-				 sense, ioc->sense_len)) {
-			printk(KERN_ERR "megasas: Failed to copy out to user "
-					"sense data\n");
-			error = -EFAULT;
-			goto out;
-		}
-	}
-
-	/*
-	 * copy the status codes returned by the fw
-	 */
-	if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
-			 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
-		printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
-		error = -EFAULT;
-	}
-
-      out:
-	if (sense) {
-		dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
-				    sense, sense_handle);
-	}
-
-	for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
-		dma_free_coherent(&instance->pdev->dev,
-				    kern_sge32[i].length,
-				    kbuff_arr[i], kern_sge32[i].phys_addr);
-	}
-
-	megasas_return_cmd(instance, cmd);
-	return error;
-}
-
-static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
-{
-	struct megasas_iocpacket __user *user_ioc =
-	    (struct megasas_iocpacket __user *)arg;
-	struct megasas_iocpacket *ioc;
-	struct megasas_instance *instance;
-	int error;
-	int i;
-	unsigned long flags;
-	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
-
-	ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
-	if (!ioc)
-		return -ENOMEM;
-
-	if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
-		error = -EFAULT;
-		goto out_kfree_ioc;
-	}
-
-	instance = megasas_lookup_instance(ioc->host_no);
-	if (!instance) {
-		error = -ENODEV;
-		goto out_kfree_ioc;
-	}
-
-	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
-		printk(KERN_ERR "Controller in crit error\n");
-		error = -ENODEV;
-		goto out_kfree_ioc;
-	}
-
-	if (instance->unload == 1) {
-		error = -ENODEV;
-		goto out_kfree_ioc;
-	}
-
-	/*
-	 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
-	 */
-	if (down_interruptible(&instance->ioctl_sem)) {
-		error = -ERESTARTSYS;
-		goto out_kfree_ioc;
-	}
-
-	for (i = 0; i < wait_time; i++) {
-
-		spin_lock_irqsave(&instance->hba_lock, flags);
-		if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
-			spin_unlock_irqrestore(&instance->hba_lock, flags);
-			break;
-		}
-		spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
-			printk(KERN_NOTICE "megasas: waiting"
-				"for controller reset to finish\n");
-		}
-
-		msleep(1000);
-	}
-
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
-		spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-		printk(KERN_ERR "megaraid_sas: timed out while"
-			"waiting for HBA to recover\n");
-		error = -ENODEV;
-		goto out_kfree_ioc;
-	}
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-	error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
-	up(&instance->ioctl_sem);
-
-      out_kfree_ioc:
-	kfree(ioc);
-	return error;
-}
-
-static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
-{
-	struct megasas_instance *instance;
-	struct megasas_aen aen;
-	int error;
-	int i;
-	unsigned long flags;
-	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
-
-	if (file->private_data != file) {
-		printk(KERN_DEBUG "megasas: fasync_helper was not "
-		       "called first\n");
-		return -EINVAL;
-	}
-
-	if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
-		return -EFAULT;
-
-	instance = megasas_lookup_instance(aen.host_no);
-
-	if (!instance)
-		return -ENODEV;
-
-	if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
-		return -ENODEV;
-	}
-
-	if (instance->unload == 1) {
-		return -ENODEV;
-	}
-
-	for (i = 0; i < wait_time; i++) {
-
-		spin_lock_irqsave(&instance->hba_lock, flags);
-		if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
-			spin_unlock_irqrestore(&instance->hba_lock,
-						flags);
-			break;
-		}
-
-		spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
-			printk(KERN_NOTICE "megasas: waiting for"
-				"controller reset to finish\n");
-		}
-
-		msleep(1000);
-	}
-
-	spin_lock_irqsave(&instance->hba_lock, flags);
-	if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
-		spin_unlock_irqrestore(&instance->hba_lock, flags);
-		printk(KERN_ERR "megaraid_sas: timed out while waiting"
-				"for HBA to recover.\n");
-		return -ENODEV;
-	}
-	spin_unlock_irqrestore(&instance->hba_lock, flags);
-
-	mutex_lock(&instance->aen_mutex);
-	error = megasas_register_aen(instance, aen.seq_num,
-				     aen.class_locale_word);
-	mutex_unlock(&instance->aen_mutex);
-	return error;
-}
-
-/**
- * megasas_mgmt_ioctl -	char node ioctl entry point
- */
-static long
-megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	switch (cmd) {
-	case MEGASAS_IOC_FIRMWARE:
-		return megasas_mgmt_ioctl_fw(file, arg);
-
-	case MEGASAS_IOC_GET_AEN:
-		return megasas_mgmt_ioctl_aen(file, arg);
-	}
-
-	return -ENOTTY;
-}
-
-#ifdef CONFIG_COMPAT
-static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
-{
-	struct compat_megasas_iocpacket __user *cioc =
-	    (struct compat_megasas_iocpacket __user *)arg;
-	struct megasas_iocpacket __user *ioc =
-	    compat_alloc_user_space(sizeof(struct megasas_iocpacket));
-	int i;
-	int error = 0;
-	compat_uptr_t ptr;
-
-	if (clear_user(ioc, sizeof(*ioc)))
-		return -EFAULT;
-
-	if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
-	    copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
-	    copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
-	    copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
-	    copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
-	    copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
-		return -EFAULT;
-
-	/*
-	 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
-	 * sense_len is not null, so prepare the 64bit value under
-	 * the same condition.
-	 */
-	if (ioc->sense_len) {
-		void __user **sense_ioc_ptr =
-			(void __user **)(ioc->frame.raw + ioc->sense_off);
-		compat_uptr_t *sense_cioc_ptr =
-			(compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
-		if (get_user(ptr, sense_cioc_ptr) ||
-		    put_user(compat_ptr(ptr), sense_ioc_ptr))
-			return -EFAULT;
-	}
-
-	for (i = 0; i < MAX_IOCTL_SGE; i++) {
-		if (get_user(ptr, &cioc->sgl[i].iov_base) ||
-		    put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
-		    copy_in_user(&ioc->sgl[i].iov_len,
-				 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
-			return -EFAULT;
-	}
-
-	error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
-
-	if (copy_in_user(&cioc->frame.hdr.cmd_status,
-			 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
-		printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
-		return -EFAULT;
-	}
-	return error;
-}
-
-static long
-megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
-			  unsigned long arg)
-{
-	switch (cmd) {
-	case MEGASAS_IOC_FIRMWARE32:
-		return megasas_mgmt_compat_ioctl_fw(file, arg);
-	case MEGASAS_IOC_GET_AEN:
-		return megasas_mgmt_ioctl_aen(file, arg);
-	}
-
-	return -ENOTTY;
-}
-#endif
-
-/*
- * File operations structure for management interface
- */
-static const struct file_operations megasas_mgmt_fops = {
-	.owner = THIS_MODULE,
-	.open = megasas_mgmt_open,
-	.fasync = megasas_mgmt_fasync,
-	.unlocked_ioctl = megasas_mgmt_ioctl,
-	.poll = megasas_mgmt_poll,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl = megasas_mgmt_compat_ioctl,
-#endif
-	.llseek = noop_llseek,
-};
-
-/*
- * PCI hotplug support registration structure
- */
-static struct pci_driver megasas_pci_driver = {
-
-	.name = "megaraid_sas",
-	.id_table = megasas_pci_table,
-	.probe = megasas_probe_one,
-	.remove = __devexit_p(megasas_detach_one),
-	.suspend = megasas_suspend,
-	.resume = megasas_resume,
-	.shutdown = megasas_shutdown,
-};
-
-/*
- * Sysfs driver attributes
- */
-static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
-{
-	return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
-			MEGASAS_VERSION);
-}
-
-static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
-
-static ssize_t
-megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
-{
-	return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
-			MEGASAS_RELDATE);
-}
-
-static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
-		   NULL);
-
-static ssize_t
-megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
-{
-	return sprintf(buf, "%u\n", support_poll_for_event);
-}
-
-static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
-			megasas_sysfs_show_support_poll_for_event, NULL);
-
- static ssize_t
-megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
-{
-	return sprintf(buf, "%u\n", support_device_change);
-}
-
-static DRIVER_ATTR(support_device_change, S_IRUGO,
-			megasas_sysfs_show_support_device_change, NULL);
-
-static ssize_t
-megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
-{
-	return sprintf(buf, "%u\n", megasas_dbg_lvl);
-}
-
-static ssize_t
-megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
-{
-	int retval = count;
-	if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
-		printk(KERN_ERR "megasas: could not set dbg_lvl\n");
-		retval = -EINVAL;
-	}
-	return retval;
-}
-
-static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
-		megasas_sysfs_set_dbg_lvl);
-
-static ssize_t
-megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
-{
-	return sprintf(buf, "%u\n", poll_mode_io);
-}
-
-static ssize_t
-megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
-				const char *buf, size_t count)
-{
-	int retval = count;
-	int tmp = poll_mode_io;
-	int i;
-	struct megasas_instance *instance;
-
-	if (sscanf(buf, "%u", &poll_mode_io) < 1) {
-		printk(KERN_ERR "megasas: could not set poll_mode_io\n");
-		retval = -EINVAL;
-	}
-
-	/*
-	 * Check if poll_mode_io is already set or is same as previous value
-	 */
-	if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
-		goto out;
-
-	if (poll_mode_io) {
-		/*
-		 * Start timers for all adapters
-		 */
-		for (i = 0; i < megasas_mgmt_info.max_index; i++) {
-			instance = megasas_mgmt_info.instance[i];
-			if (instance) {
-				megasas_start_timer(instance,
-					&instance->io_completion_timer,
-					megasas_io_completion_timer,
-					MEGASAS_COMPLETION_TIMER_INTERVAL);
-			}
-		}
-	} else {
-		/*
-		 * Delete timers for all adapters
-		 */
-		for (i = 0; i < megasas_mgmt_info.max_index; i++) {
-			instance = megasas_mgmt_info.instance[i];
-			if (instance)
-				del_timer_sync(&instance->io_completion_timer);
-		}
-	}
-
-out:
-	return retval;
-}
-
-static void
-megasas_aen_polling(struct work_struct *work)
-{
-	struct megasas_aen_event *ev =
-		container_of(work, struct megasas_aen_event, hotplug_work);
-	struct megasas_instance *instance = ev->instance;
-	union megasas_evt_class_locale class_locale;
-	struct  Scsi_Host *host;
-	struct  scsi_device *sdev1;
-	u16     pd_index = 0;
-	u16	ld_index = 0;
-	int     i, j, doscan = 0;
-	u32 seq_num;
-	int error;
-
-	if (!instance) {
-		printk(KERN_ERR "invalid instance!\n");
-		kfree(ev);
-		return;
-	}
-	instance->ev = NULL;
-	host = instance->host;
-	if (instance->evt_detail) {
-
-		switch (instance->evt_detail->code) {
-		case MR_EVT_PD_INSERTED:
-			if (megasas_get_pd_list(instance) == 0) {
-			for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
-				for (j = 0;
-				j < MEGASAS_MAX_DEV_PER_CHANNEL;
-				j++) {
-
-				pd_index =
-				(i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
-
-				sdev1 =
-				scsi_device_lookup(host, i, j, 0);
-
-				if (instance->pd_list[pd_index].driveState
-						== MR_PD_STATE_SYSTEM) {
-						if (!sdev1) {
-						scsi_add_device(host, i, j, 0);
-						}
-
-					if (sdev1)
-						scsi_device_put(sdev1);
-					}
-				}
-			}
-			}
-			doscan = 0;
-			break;
-
-		case MR_EVT_PD_REMOVED:
-			if (megasas_get_pd_list(instance) == 0) {
-			megasas_get_pd_list(instance);
-			for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
-				for (j = 0;
-				j < MEGASAS_MAX_DEV_PER_CHANNEL;
-				j++) {
-
-				pd_index =
-				(i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
-
-				sdev1 =
-				scsi_device_lookup(host, i, j, 0);
-
-				if (instance->pd_list[pd_index].driveState
-					== MR_PD_STATE_SYSTEM) {
-					if (sdev1) {
-						scsi_device_put(sdev1);
-					}
-				} else {
-					if (sdev1) {
-						scsi_remove_device(sdev1);
-						scsi_device_put(sdev1);
-					}
-				}
-				}
-			}
-			}
-			doscan = 0;
-			break;
-
-		case MR_EVT_LD_OFFLINE:
-		case MR_EVT_LD_DELETED:
-			megasas_get_ld_list(instance);
-			for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
-				for (j = 0;
-				j < MEGASAS_MAX_DEV_PER_CHANNEL;
-				j++) {
-
-				ld_index =
-				(i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
-
-				sdev1 = scsi_device_lookup(host,
-					i + MEGASAS_MAX_LD_CHANNELS,
-					j,
-					0);
-
-				if (instance->ld_ids[ld_index] != 0xff) {
-					if (sdev1) {
-						scsi_device_put(sdev1);
-					}
-				} else {
-					if (sdev1) {
-						scsi_remove_device(sdev1);
-						scsi_device_put(sdev1);
-					}
-				}
-				}
-			}
-			doscan = 0;
-			break;
-		case MR_EVT_LD_CREATED:
-			megasas_get_ld_list(instance);
-			for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
-				for (j = 0;
-					j < MEGASAS_MAX_DEV_PER_CHANNEL;
-					j++) {
-					ld_index =
-					(i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
-
-					sdev1 = scsi_device_lookup(host,
-						i+MEGASAS_MAX_LD_CHANNELS,
-						j, 0);
-
-					if (instance->ld_ids[ld_index] !=
-								0xff) {
-						if (!sdev1) {
-							scsi_add_device(host,
-								i + 2,
-								j, 0);
-						}
-					}
-					if (sdev1) {
-						scsi_device_put(sdev1);
-					}
-				}
-			}
-			doscan = 0;
-			break;
-		case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
-		case MR_EVT_FOREIGN_CFG_IMPORTED:
-			doscan = 1;
-			break;
-		default:
-			doscan = 0;
-			break;
-		}
-	} else {
-		printk(KERN_ERR "invalid evt_detail!\n");
-		kfree(ev);
-		return;
-	}
-
-	if (doscan) {
-		printk(KERN_INFO "scanning ...\n");
-		megasas_get_pd_list(instance);
-		for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
-			for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
-				pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
-				sdev1 = scsi_device_lookup(host, i, j, 0);
-				if (instance->pd_list[pd_index].driveState ==
-							MR_PD_STATE_SYSTEM) {
-					if (!sdev1) {
-						scsi_add_device(host, i, j, 0);
-					}
-					if (sdev1)
-						scsi_device_put(sdev1);
-				} else {
-					if (sdev1) {
-						scsi_remove_device(sdev1);
-						scsi_device_put(sdev1);
-					}
-				}
-			}
-		}
-
-		megasas_get_ld_list(instance);
-		for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
-			for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
-				ld_index =
-				(i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
-
-				sdev1 = scsi_device_lookup(host,
-					i+MEGASAS_MAX_LD_CHANNELS, j, 0);
-				if (instance->ld_ids[ld_index] != 0xff) {
-					if (!sdev1) {
-						scsi_add_device(host,
-								i+2,
-								j, 0);
-					} else {
-						scsi_device_put(sdev1);
-					}
-				} else {
-					if (sdev1) {
-						scsi_remove_device(sdev1);
-						scsi_device_put(sdev1);
-					}
-				}
-			}
-		}
-	}
-
-	if ( instance->aen_cmd != NULL ) {
-		kfree(ev);
-		return ;
-	}
-
-	seq_num = instance->evt_detail->seq_num + 1;
-
-	/* Register AEN with FW for latest sequence number plus 1 */
-	class_locale.members.reserved = 0;
-	class_locale.members.locale = MR_EVT_LOCALE_ALL;
-	class_locale.members.class = MR_EVT_CLASS_DEBUG;
-	mutex_lock(&instance->aen_mutex);
-	error = megasas_register_aen(instance, seq_num,
-					class_locale.word);
-	mutex_unlock(&instance->aen_mutex);
-
-	if (error)
-		printk(KERN_ERR "register aen failed error %x\n", error);
-
-	kfree(ev);
-}
-
-
-static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR,
-		megasas_sysfs_show_poll_mode_io,
-		megasas_sysfs_set_poll_mode_io);
-
-/**
- * megasas_init - Driver load entry point
- */
-static int __init megasas_init(void)
-{
-	int rval;
-
-	/*
-	 * Announce driver version and other information
-	 */
-	printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
-	       MEGASAS_EXT_VERSION);
-
-	support_poll_for_event = 2;
-	support_device_change = 1;
-
-	memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
-
-	/*
-	 * Register character device node
-	 */
-	rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
-
-	if (rval < 0) {
-		printk(KERN_DEBUG "megasas: failed to open device node\n");
-		return rval;
-	}
-
-	megasas_mgmt_majorno = rval;
-
-	/*
-	 * Register ourselves as PCI hotplug module
-	 */
-	rval = pci_register_driver(&megasas_pci_driver);
-
-	if (rval) {
-		printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
-		goto err_pcidrv;
-	}
-
-	rval = driver_create_file(&megasas_pci_driver.driver,
-				  &driver_attr_version);
-	if (rval)
-		goto err_dcf_attr_ver;
-	rval = driver_create_file(&megasas_pci_driver.driver,
-				  &driver_attr_release_date);
-	if (rval)
-		goto err_dcf_rel_date;
-
-	rval = driver_create_file(&megasas_pci_driver.driver,
-				&driver_attr_support_poll_for_event);
-	if (rval)
-		goto err_dcf_support_poll_for_event;
-
-	rval = driver_create_file(&megasas_pci_driver.driver,
-				  &driver_attr_dbg_lvl);
-	if (rval)
-		goto err_dcf_dbg_lvl;
-	rval = driver_create_file(&megasas_pci_driver.driver,
-				  &driver_attr_poll_mode_io);
-	if (rval)
-		goto err_dcf_poll_mode_io;
-
-	rval = driver_create_file(&megasas_pci_driver.driver,
-				&driver_attr_support_device_change);
-	if (rval)
-		goto err_dcf_support_device_change;
-
-	return rval;
-
-err_dcf_support_device_change:
-	driver_remove_file(&megasas_pci_driver.driver,
-		  &driver_attr_poll_mode_io);
-
-err_dcf_poll_mode_io:
-	driver_remove_file(&megasas_pci_driver.driver,
-			   &driver_attr_dbg_lvl);
-err_dcf_dbg_lvl:
-	driver_remove_file(&megasas_pci_driver.driver,
-			&driver_attr_support_poll_for_event);
-
-err_dcf_support_poll_for_event:
-	driver_remove_file(&megasas_pci_driver.driver,
-			   &driver_attr_release_date);
-
-err_dcf_rel_date:
-	driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
-err_dcf_attr_ver:
-	pci_unregister_driver(&megasas_pci_driver);
-err_pcidrv:
-	unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
-  	return rval;
-}
-
-/**
- * megasas_exit - Driver unload entry point
- */
-static void __exit megasas_exit(void)
-{
-	driver_remove_file(&megasas_pci_driver.driver,
-			   &driver_attr_poll_mode_io);
-	driver_remove_file(&megasas_pci_driver.driver,
-			   &driver_attr_dbg_lvl);
-	driver_remove_file(&megasas_pci_driver.driver,
-			&driver_attr_support_poll_for_event);
-	driver_remove_file(&megasas_pci_driver.driver,
-			&driver_attr_support_device_change);
-	driver_remove_file(&megasas_pci_driver.driver,
-			   &driver_attr_release_date);
-	driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
-
-	pci_unregister_driver(&megasas_pci_driver);
-	unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
-}
-
-module_init(megasas_init);
-module_exit(megasas_exit);