/*
 * This is the Fusion MPT base driver providing common API layer interface
 * for access to MPT (Message Passing Technology) firmware.
 *
 * This code is based on drivers/scsi/mpt2sas/mpt2_base.h
 * Copyright (C) 2007-2008  LSI Corporation
 *  (mailto:DL-MPTFusionLinux@lsi.com)
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * NO WARRANTY
 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
 * solely responsible for determining the appropriateness of using and
 * distributing the Program and assumes all risks associated with its
 * exercise of rights under this Agreement, including but not limited to
 * the risks and costs of program errors, damage to or loss of data,
 * programs or equipment, and unavailability or interruption of operations.

 * DISCLAIMER OF LIABILITY
 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 */

#ifndef MPT2SAS_BASE_H_INCLUDED
#define MPT2SAS_BASE_H_INCLUDED

#include "mpi/mpi2_type.h"
#include "mpi/mpi2.h"
#include "mpi/mpi2_ioc.h"
#include "mpi/mpi2_cnfg.h"
#include "mpi/mpi2_init.h"
#include "mpi/mpi2_raid.h"
#include "mpi/mpi2_tool.h"
#include "mpi/mpi2_sas.h"

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_sas.h>
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_eh.h>

#include "mpt2sas_debug.h"

/* driver versioning info */
#define MPT2SAS_DRIVER_NAME		"mpt2sas"
#define MPT2SAS_AUTHOR	"LSI Corporation <DL-MPTFusionLinux@lsi.com>"
#define MPT2SAS_DESCRIPTION	"LSI MPT Fusion SAS 2.0 Device Driver"
#define MPT2SAS_DRIVER_VERSION		"01.100.06.00"
#define MPT2SAS_MAJOR_VERSION		01
#define MPT2SAS_MINOR_VERSION		100
#define MPT2SAS_BUILD_VERSION		06
#define MPT2SAS_RELEASE_VERSION		00

/*
 * Set MPT2SAS_SG_DEPTH value based on user input.
 */
#ifdef CONFIG_SCSI_MPT2SAS_MAX_SGE
#if     CONFIG_SCSI_MPT2SAS_MAX_SGE  < 16
#define MPT2SAS_SG_DEPTH       16
#elif CONFIG_SCSI_MPT2SAS_MAX_SGE  > 128
#define MPT2SAS_SG_DEPTH       128
#else
#define MPT2SAS_SG_DEPTH       CONFIG_SCSI_MPT2SAS_MAX_SGE
#endif
#else
#define MPT2SAS_SG_DEPTH       128 /* MAX_HW_SEGMENTS */
#endif


/*
 * Generic Defines
 */
#define MPT2SAS_SATA_QUEUE_DEPTH	32
#define MPT2SAS_SAS_QUEUE_DEPTH		254
#define MPT2SAS_RAID_QUEUE_DEPTH	128

#define MPT_NAME_LENGTH			32	/* generic length of strings */
#define MPT_STRING_LENGTH		64

#define	MPT_MAX_CALLBACKS		16

#define	 CAN_SLEEP			1
#define  NO_SLEEP			0

#define INTERNAL_CMDS_COUNT		10	/* reserved cmds */

#define MPI2_HIM_MASK			0xFFFFFFFF /* mask every bit*/

#define MPT2SAS_INVALID_DEVICE_HANDLE	0xFFFF


/*
 * reset phases
 */
#define MPT2_IOC_PRE_RESET		1 /* prior to host reset */
#define MPT2_IOC_AFTER_RESET		2 /* just after host reset */
#define MPT2_IOC_DONE_RESET		3 /* links re-initialized */
#define MPT2_IOC_RUNNING		4 /* shost running */

/*
 * logging format
 */
#define MPT2SAS_FMT			"%s: "
#define MPT2SAS_DEBUG_FMT		KERN_DEBUG MPT2SAS_FMT
#define MPT2SAS_INFO_FMT		KERN_INFO MPT2SAS_FMT
#define MPT2SAS_NOTE_FMT		KERN_NOTICE MPT2SAS_FMT
#define MPT2SAS_WARN_FMT		KERN_WARNING MPT2SAS_FMT
#define MPT2SAS_ERR_FMT			KERN_ERR MPT2SAS_FMT

/*
 * Dell HBA branding
 */
#define MPT2SAS_DELL_BRANDING_SIZE                 32

#define MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING        "Dell 6Gbps SAS HBA"
#define MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING    "Dell PERC H200 Adapter"
#define MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING "Dell PERC H200 Integrated"
#define MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING    "Dell PERC H200 Modular"
#define MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING   "Dell PERC H200 Embedded"
#define MPT2SAS_DELL_PERC_H200_BRANDING            "Dell PERC H200"
#define MPT2SAS_DELL_6GBPS_SAS_BRANDING            "Dell 6Gbps SAS"

/*
 * Dell HBA SSDIDs
 */
#define MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID           0x1F1C
#define MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID       0x1F1D
#define MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID    0x1F1E
#define MPT2SAS_DELL_PERC_H200_MODULAR_SSDID       0x1F1F
#define MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID      0x1F20
#define MPT2SAS_DELL_PERC_H200_SSDID               0x1F21
#define MPT2SAS_DELL_6GBPS_SAS_SSDID               0x1F22

/*
 * per target private data
 */
#define MPT_TARGET_FLAGS_RAID_COMPONENT	0x01
#define MPT_TARGET_FLAGS_VOLUME		0x02
#define MPT_TARGET_FLAGS_DELETED	0x04

/**
 * struct MPT2SAS_TARGET - starget private hostdata
 * @starget: starget object
 * @sas_address: target sas address
 * @handle: device handle
 * @num_luns: number luns
 * @flags: MPT_TARGET_FLAGS_XXX flags
 * @deleted: target flaged for deletion
 * @tm_busy: target is busy with TM request.
 */
struct MPT2SAS_TARGET {
	struct scsi_target *starget;
	u64	sas_address;
	u16	handle;
	int	num_luns;
	u32	flags;
	u8	deleted;
	u8	tm_busy;
};

/*
 * per device private data
 */
#define MPT_DEVICE_FLAGS_INIT		0x01
#define MPT_DEVICE_TLR_ON		0x02

/**
 * struct MPT2SAS_DEVICE - sdev private hostdata
 * @sas_target: starget private hostdata
 * @lun: lun number
 * @flags: MPT_DEVICE_XXX flags
 * @configured_lun: lun is configured
 * @block: device is in SDEV_BLOCK state
 * @tlr_snoop_check: flag used in determining whether to disable TLR
 */

/* OEM Identifiers */
#define MFG10_OEM_ID_INVALID                   (0x00000000)
#define MFG10_OEM_ID_DELL                      (0x00000001)
#define MFG10_OEM_ID_FSC                       (0x00000002)
#define MFG10_OEM_ID_SUN                       (0x00000003)
#define MFG10_OEM_ID_IBM                       (0x00000004)

/* GENERIC Flags 0*/
#define MFG10_GF0_OCE_DISABLED                 (0x00000001)
#define MFG10_GF0_R1E_DRIVE_COUNT              (0x00000002)
#define MFG10_GF0_R10_DISPLAY                  (0x00000004)
#define MFG10_GF0_SSD_DATA_SCRUB_DISABLE       (0x00000008)
#define MFG10_GF0_SINGLE_DRIVE_R0              (0x00000010)

/* OEM Specific Flags will come from OEM specific header files */
typedef struct _MPI2_CONFIG_PAGE_MAN_10 {
    MPI2_CONFIG_PAGE_HEADER Header;                                 /* 00h */
    U8                      OEMIdentifier;                          /* 04h */
    U8                      Reserved1;                              /* 05h */
    U16                     Reserved2;                              /* 08h */
    U32                     Reserved3;                              /* 0Ch */
    U32                     GenericFlags0;                          /* 10h */
    U32                     GenericFlags1;                          /* 14h */
    U32                     Reserved4;                              /* 18h */
    U32                     OEMSpecificFlags0;                      /* 1Ch */
    U32                     OEMSpecificFlags1;                      /* 20h */
    U32                     Reserved5[18];                          /* 24h-60h*/
} MPI2_CONFIG_PAGE_MAN_10,
  MPI2_POINTER PTR_MPI2_CONFIG_PAGE_MAN_10,
  Mpi2ManufacturingPage10_t, MPI2_POINTER pMpi2ManufacturingPage10_t;

struct MPT2SAS_DEVICE {
	struct MPT2SAS_TARGET *sas_target;
	unsigned int	lun;
	u32	flags;
	u8	configured_lun;
	u8	block;
	u8	tlr_snoop_check;
};

#define MPT2_CMD_NOT_USED	0x8000	/* free */
#define MPT2_CMD_COMPLETE	0x0001	/* completed */
#define MPT2_CMD_PENDING	0x0002	/* pending */
#define MPT2_CMD_REPLY_VALID	0x0004	/* reply is valid */
#define MPT2_CMD_RESET		0x0008	/* host reset dropped the command */

/**
 * struct _internal_cmd - internal commands struct
 * @mutex: mutex
 * @done: completion
 * @reply: reply message pointer
 * @status: MPT2_CMD_XXX status
 * @smid: system message id
 */
struct _internal_cmd {
	struct mutex mutex;
	struct completion done;
	void 	*reply;
	u16	status;
	u16	smid;
};

/*
 * SAS Topology Structures
 */

/**
 * struct _sas_device - attached device information
 * @list: sas device list
 * @starget: starget object
 * @sas_address: device sas address
 * @device_name: retrieved from the SAS IDENTIFY frame.
 * @handle: device handle
 * @parent_handle: handle to parent device
 * @enclosure_handle: enclosure handle
 * @enclosure_logical_id: enclosure logical identifier
 * @volume_handle: volume handle (valid when hidden raid member)
 * @volume_wwid: volume unique identifier
 * @device_info: bitfield provides detailed info about the device
 * @id: target id
 * @channel: target channel
 * @slot: number number
 * @hidden_raid_component: set to 1 when this is a raid member
 * @responding: used in _scsih_sas_device_mark_responding
 */
struct _sas_device {
	struct list_head list;
	struct scsi_target *starget;
	u64	sas_address;
	u64	device_name;
	u16	handle;
	u16	parent_handle;
	u16	enclosure_handle;
	u64	enclosure_logical_id;
	u16	volume_handle;
	u64	volume_wwid;
	u32	device_info;
	int	id;
	int	channel;
	u16	slot;
	u8	hidden_raid_component;
	u8	responding;
};

/**
 * struct _raid_device - raid volume link list
 * @list: sas device list
 * @starget: starget object
 * @sdev: scsi device struct (volumes are single lun)
 * @wwid: unique identifier for the volume
 * @handle: device handle
 * @id: target id
 * @channel: target channel
 * @volume_type: the raid level
 * @device_info: bitfield provides detailed info about the hidden components
 * @num_pds: number of hidden raid components
 * @responding: used in _scsih_raid_device_mark_responding
 */
struct _raid_device {
	struct list_head list;
	struct scsi_target *starget;
	struct scsi_device *sdev;
	u64	wwid;
	u16	handle;
	int	id;
	int	channel;
	u8	volume_type;
	u32	device_info;
	u8	num_pds;
	u8	responding;
};

/**
 * struct _boot_device - boot device info
 * @is_raid: flag to indicate whether this is volume
 * @device: holds pointer for either struct _sas_device or
 *     struct _raid_device
 */
struct _boot_device {
	u8 is_raid;
	void *device;
};

/**
 * struct _sas_port - wide/narrow sas port information
 * @port_list: list of ports belonging to expander
 * @handle: device handle for this port
 * @sas_address: sas address of this port
 * @num_phys: number of phys belonging to this port
 * @remote_identify: attached device identification
 * @rphy: sas transport rphy object
 * @port: sas transport wide/narrow port object
 * @phy_list: _sas_phy list objects belonging to this port
 */
struct _sas_port {
	struct list_head port_list;
	u16	handle;
	u64	sas_address;
	u8	num_phys;
	struct sas_identify remote_identify;
	struct sas_rphy *rphy;
	struct sas_port *port;
	struct list_head phy_list;
};

/**
 * struct _sas_phy - phy information
 * @port_siblings: list of phys belonging to a port
 * @identify: phy identification
 * @remote_identify: attached device identification
 * @phy: sas transport phy object
 * @phy_id: unique phy id
 * @handle: device handle for this phy
 * @attached_handle: device handle for attached device
 */
struct _sas_phy {
	struct list_head port_siblings;
	struct sas_identify identify;
	struct sas_identify remote_identify;
	struct sas_phy *phy;
	u8	phy_id;
	u16	handle;
	u16	attached_handle;
};

/**
 * struct _sas_node - sas_host/expander information
 * @list: list of expanders
 * @parent_dev: parent device class
 * @num_phys: number phys belonging to this sas_host/expander
 * @sas_address: sas address of this sas_host/expander
 * @handle: handle for this sas_host/expander
 * @parent_handle: parent handle
 * @enclosure_handle: handle for this a member of an enclosure
 * @device_info: bitwise defining capabilities of this sas_host/expander
 * @responding: used in _scsih_expander_device_mark_responding
 * @phy: a list of phys that make up this sas_host/expander
 * @sas_port_list: list of ports attached to this sas_host/expander
 */
struct _sas_node {
	struct list_head list;
	struct device *parent_dev;
	u8	num_phys;
	u64	sas_address;
	u16	handle;
	u16	parent_handle;
	u16	enclosure_handle;
	u64	enclosure_logical_id;
	u8	responding;
	struct	_sas_phy *phy;
	struct list_head sas_port_list;
};

/**
 * enum reset_type - reset state
 * @FORCE_BIG_HAMMER: issue diagnostic reset
 * @SOFT_RESET: issue message_unit_reset, if fails to to big hammer
 */
enum reset_type {
	FORCE_BIG_HAMMER,
	SOFT_RESET,
};

/**
 * struct request_tracker - firmware request tracker
 * @smid: system message id
 * @scmd: scsi request pointer
 * @cb_idx: callback index
 * @chain_list: list of chains associated to this IO
 * @tracker_list: list of free request (ioc->free_list)
 */
struct request_tracker {
	u16	smid;
	struct scsi_cmnd *scmd;
	u8	cb_idx;
	struct list_head tracker_list;
};

typedef void (*MPT_ADD_SGE)(void *paddr, u32 flags_length, dma_addr_t dma_addr);

/**
 * struct MPT2SAS_ADAPTER - per adapter struct
 * @list: ioc_list
 * @shost: shost object
 * @id: unique adapter id
 * @pci_irq: irq number
 * @name: generic ioc string
 * @tmp_string: tmp string used for logging
 * @pdev: pci pdev object
 * @chip: memory mapped register space
 * @chip_phys: physical addrss prior to mapping
 * @pio_chip: I/O mapped register space
 * @logging_level: see mpt2sas_debug.h
 * @ir_firmware: IR firmware present
 * @bars: bitmask of BAR's that must be configured
 * @mask_interrupts: ignore interrupt
 * @fault_reset_work_q_name: fw fault work queue
 * @fault_reset_work_q: ""
 * @fault_reset_work: ""
 * @firmware_event_name: fw event work queue
 * @firmware_event_thread: ""
 * @fw_events_off: flag to turn off fw event handling
 * @fw_event_lock:
 * @fw_event_list: list of fw events
 * @aen_event_read_flag: event log was read
 * @broadcast_aen_busy: broadcast aen waiting to be serviced
 * @shost_recovery: host reset in progress
 * @ioc_reset_in_progress_lock:
 * @ioc_link_reset_in_progress: phy/hard reset in progress
 * @ignore_loginfos: ignore loginfos during task managment
 * @remove_host: flag for when driver unloads, to avoid sending dev resets
 * @wait_for_port_enable_to_complete:
 * @msix_enable: flag indicating msix is enabled
 * @msix_vector_count: number msix vectors
 * @msix_table: virt address to the msix table
 * @msix_table_backup: backup msix table
 * @scsi_io_cb_idx: shost generated commands
 * @tm_cb_idx: task management commands
 * @transport_cb_idx: transport internal commands
 * @ctl_cb_idx: clt internal commands
 * @base_cb_idx: base internal commands
 * @config_cb_idx: base internal commands
 * @base_cmds:
 * @transport_cmds:
 * @tm_cmds:
 * @ctl_cmds:
 * @config_cmds:
 * @base_add_sg_single: handler for either 32/64 bit sgl's
 * @event_type: bits indicating which events to log
 * @event_context: unique id for each logged event
 * @event_log: event log pointer
 * @event_masks: events that are masked
 * @facts: static facts data
 * @pfacts: static port facts data
 * @manu_pg0: static manufacturing page 0
 * @manu_pg10: static manufacturing page 10
 * @bios_pg2: static bios page 2
 * @bios_pg3: static bios page 3
 * @ioc_pg8: static ioc page 8
 * @iounit_pg0: static iounit page 0
 * @iounit_pg1: static iounit page 1
 * @sas_hba: sas host object
 * @sas_expander_list: expander object list
 * @sas_node_lock:
 * @sas_device_list: sas device object list
 * @sas_device_init_list: sas device object list (used only at init time)
 * @sas_device_lock:
 * @io_missing_delay: time for IO completed by fw when PDR enabled
 * @device_missing_delay: time for device missing by fw when PDR enabled
 * @config_page_sz: config page size
 * @config_page: reserve memory for config page payload
 * @config_page_dma:
 * @sge_size: sg element size for either 32/64 bit
 * @request_depth: hba request queue depth
 * @request_sz: per request frame size
 * @request: pool of request frames
 * @request_dma:
 * @request_dma_sz:
 * @scsi_lookup: firmware request tracker list
 * @scsi_lookup_lock:
 * @free_list: free list of request
 * @chain: pool of chains
 * @pending_io_count:
 * @reset_wq:
 * @chain_dma:
 * @max_sges_in_main_message: number sg elements in main message
 * @max_sges_in_chain_message: number sg elements per chain
 * @chains_needed_per_io: max chains per io
 * @chain_offset_value_for_main_message: location 1st sg in main
 * @chain_depth: total chains allocated
 * @sense: pool of sense
 * @sense_dma:
 * @sense_dma_pool:
 * @reply_depth: hba reply queue depth:
 * @reply_sz: per reply frame size:
 * @reply: pool of replys:
 * @reply_dma:
 * @reply_dma_pool:
 * @reply_free_queue_depth: reply free depth
 * @reply_free: pool for reply free queue (32 bit addr)
 * @reply_free_dma:
 * @reply_free_dma_pool:
 * @reply_free_host_index: tail index in pool to insert free replys
 * @reply_post_queue_depth: reply post queue depth
 * @reply_post_free: pool for reply post (64bit descriptor)
 * @reply_post_free_dma:
 * @reply_post_free_dma_pool:
 * @reply_post_host_index: head index in the pool where FW completes IO
 */
struct MPT2SAS_ADAPTER {
	struct list_head list;
	struct Scsi_Host *shost;
	u8		id;
	u32		pci_irq;
	char		name[MPT_NAME_LENGTH];
	char		tmp_string[MPT_STRING_LENGTH];
	struct pci_dev	*pdev;
	Mpi2SystemInterfaceRegs_t __iomem *chip;
	unsigned long	chip_phys;
	unsigned long	pio_chip;
	int		logging_level;
	u8		ir_firmware;
	int		bars;
	u8		mask_interrupts;

	/* fw fault handler */
	char		fault_reset_work_q_name[20];
	struct workqueue_struct *fault_reset_work_q;
	struct delayed_work fault_reset_work;

	/* fw event handler */
	char		firmware_event_name[20];
	struct workqueue_struct	*firmware_event_thread;
	u8		fw_events_off;
	spinlock_t	fw_event_lock;
	struct list_head fw_event_list;

	 /* misc flags */
	int		aen_event_read_flag;
	u8		broadcast_aen_busy;
	u8		shost_recovery;
	spinlock_t 	ioc_reset_in_progress_lock;
	u8		ioc_link_reset_in_progress;
	u8		ignore_loginfos;
	u8		remove_host;
	u8		wait_for_port_enable_to_complete;

	u8		msix_enable;
	u16		msix_vector_count;
	u32		*msix_table;
	u32		*msix_table_backup;

	/* internal commands, callback index */
	u8		scsi_io_cb_idx;
	u8		tm_cb_idx;
	u8		transport_cb_idx;
	u8		ctl_cb_idx;
	u8		base_cb_idx;
	u8		config_cb_idx;
	struct _internal_cmd base_cmds;
	struct _internal_cmd transport_cmds;
	struct _internal_cmd tm_cmds;
	struct _internal_cmd ctl_cmds;
	struct _internal_cmd config_cmds;

	MPT_ADD_SGE	base_add_sg_single;

	/* event log */
	u32		event_type[MPI2_EVENT_NOTIFY_EVENTMASK_WORDS];
	u32		event_context;
	void		*event_log;
	u32		event_masks[MPI2_EVENT_NOTIFY_EVENTMASK_WORDS];

	/* static config pages */
	Mpi2IOCFactsReply_t facts;
	Mpi2PortFactsReply_t *pfacts;
	Mpi2ManufacturingPage0_t manu_pg0;
	Mpi2BiosPage2_t	bios_pg2;
	Mpi2BiosPage3_t	bios_pg3;
	Mpi2IOCPage8_t ioc_pg8;
	Mpi2IOUnitPage0_t iounit_pg0;
	Mpi2IOUnitPage1_t iounit_pg1;

	struct _boot_device req_boot_device;
	struct _boot_device req_alt_boot_device;
	struct _boot_device current_boot_device;

	/* sas hba, expander, and device list */
	struct _sas_node sas_hba;
	struct list_head sas_expander_list;
	spinlock_t	sas_node_lock;
	struct list_head sas_device_list;
	struct list_head sas_device_init_list;
	spinlock_t	sas_device_lock;
	struct list_head raid_device_list;
	spinlock_t	raid_device_lock;
	u8		io_missing_delay;
	u16		device_missing_delay;
	int		sas_id;

	/* config page */
	u16		config_page_sz;
	void 		*config_page;
	dma_addr_t	config_page_dma;

	/* request */
	u16		sge_size;
	u16 		request_depth;
	u16		request_sz;
	u8		*request;
	dma_addr_t	request_dma;
	u32		request_dma_sz;
	struct request_tracker *scsi_lookup;
	spinlock_t scsi_lookup_lock;
	struct list_head free_list;
	int		pending_io_count;
	wait_queue_head_t reset_wq;

	/* chain */
	u8		*chain;
	dma_addr_t	chain_dma;
	u16 		max_sges_in_main_message;
	u16		max_sges_in_chain_message;
	u16		chains_needed_per_io;
	u16		chain_offset_value_for_main_message;
	u16		chain_depth;

	/* sense */
	u8		*sense;
	dma_addr_t	sense_dma;
	struct dma_pool *sense_dma_pool;

	/* reply */
	u16		reply_sz;
	u8		*reply;
	dma_addr_t	reply_dma;
	struct dma_pool *reply_dma_pool;

	/* reply free queue */
	u16 		reply_free_queue_depth;
	u32		*reply_free;
	dma_addr_t	reply_free_dma;
	struct dma_pool *reply_free_dma_pool;
	u32		reply_free_host_index;

	/* reply post queue */
	u16 		reply_post_queue_depth;
	Mpi2ReplyDescriptorsUnion_t *reply_post_free;
	dma_addr_t	reply_post_free_dma;
	struct dma_pool *reply_post_free_dma_pool;
	u32		reply_post_host_index;

	/* diag buffer support */
	u8		*diag_buffer[MPI2_DIAG_BUF_TYPE_COUNT];
	u32		diag_buffer_sz[MPI2_DIAG_BUF_TYPE_COUNT];
	dma_addr_t	diag_buffer_dma[MPI2_DIAG_BUF_TYPE_COUNT];
	u8		diag_buffer_status[MPI2_DIAG_BUF_TYPE_COUNT];
	u32		unique_id[MPI2_DIAG_BUF_TYPE_COUNT];
	Mpi2ManufacturingPage10_t manu_pg10;
	u32		product_specific[MPI2_DIAG_BUF_TYPE_COUNT][23];
	u32		diagnostic_flags[MPI2_DIAG_BUF_TYPE_COUNT];
};

typedef void (*MPT_CALLBACK)(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID,
    u32 reply);


/* base shared API */
extern struct list_head mpt2sas_ioc_list;
void mpt2sas_base_start_watchdog(struct MPT2SAS_ADAPTER *ioc);
void mpt2sas_base_stop_watchdog(struct MPT2SAS_ADAPTER *ioc);

int mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc);
void mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc);
int mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc);
void mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc);
int mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
    enum reset_type type);

void *mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid);
void *mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid);
void mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr);
dma_addr_t mpt2sas_base_get_msg_frame_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid);
dma_addr_t mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid);

u16 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx);
void mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid);
void mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 vf_id,
    u16 handle);
void mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 vf_id);
void mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
    u8 vf_id, u16 io_index);
void mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 vf_id);
void mpt2sas_base_initialize_callback_handler(void);
u8 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func);
void mpt2sas_base_release_callback_handler(u8 cb_idx);

void mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply);
void *mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr);

u32 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked);

void mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code);
int mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
    Mpi2SasIoUnitControlReply_t *mpi_reply, Mpi2SasIoUnitControlRequest_t
    *mpi_request);
int mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
    Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request);
void mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type);

/* scsih shared API */
void mpt2sas_scsih_issue_tm(struct MPT2SAS_ADAPTER *ioc, u16 handle, uint lun,
    u8 type, u16 smid_task, ulong timeout);
void mpt2sas_scsih_set_tm_flag(struct MPT2SAS_ADAPTER *ioc, u16 handle);
void mpt2sas_scsih_clear_tm_flag(struct MPT2SAS_ADAPTER *ioc, u16 handle);
struct _sas_node *mpt2sas_scsih_expander_find_by_handle(struct MPT2SAS_ADAPTER *ioc,
    u16 handle);
struct _sas_node *mpt2sas_scsih_expander_find_by_sas_address(struct MPT2SAS_ADAPTER
    *ioc, u64 sas_address);
struct _sas_device *mpt2sas_scsih_sas_device_find_by_sas_address(
    struct MPT2SAS_ADAPTER *ioc, u64 sas_address);

void mpt2sas_scsih_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, u32 reply);
void mpt2sas_scsih_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase);

/* config shared API */
void mpt2sas_config_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply);
int mpt2sas_config_get_number_hba_phys(struct MPT2SAS_ADAPTER *ioc, u8 *num_phys);
int mpt2sas_config_get_manufacturing_pg0(struct MPT2SAS_ADAPTER *ioc,
    Mpi2ConfigReply_t *mpi_reply, Mpi2ManufacturingPage0_t *config_page);
int mpt2sas_config_get_manufacturing_pg10(struct MPT2SAS_ADAPTER *ioc,
    Mpi2ConfigReply_t *mpi_reply, Mpi2ManufacturingPage10_t *config_page);
int mpt2sas_config_get_bios_pg2(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2BiosPage2_t *config_page);
int mpt2sas_config_get_bios_pg3(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2BiosPage3_t *config_page);
int mpt2sas_config_get_iounit_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2IOUnitPage0_t *config_page);
int mpt2sas_config_get_sas_device_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2SasDevicePage0_t *config_page, u32 form, u32 handle);
int mpt2sas_config_get_sas_device_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2SasDevicePage1_t *config_page, u32 form, u32 handle);
int mpt2sas_config_get_sas_iounit_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2SasIOUnitPage0_t *config_page, u16 sz);
int mpt2sas_config_get_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2IOUnitPage1_t *config_page);
int mpt2sas_config_set_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2IOUnitPage1_t *config_page);
int mpt2sas_config_get_sas_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2SasIOUnitPage1_t *config_page, u16 sz);
int mpt2sas_config_get_ioc_pg8(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2IOCPage8_t *config_page);
int mpt2sas_config_get_expander_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2ExpanderPage0_t *config_page, u32 form, u32 handle);
int mpt2sas_config_get_expander_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2ExpanderPage1_t *config_page, u32 phy_number, u16 handle);
int mpt2sas_config_get_enclosure_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2SasEnclosurePage0_t *config_page, u32 form, u32 handle);
int mpt2sas_config_get_phy_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2SasPhyPage0_t *config_page, u32 phy_number);
int mpt2sas_config_get_phy_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2SasPhyPage1_t *config_page, u32 phy_number);
int mpt2sas_config_get_raid_volume_pg1(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2RaidVolPage1_t *config_page, u32 form, u32 handle);
int mpt2sas_config_get_number_pds(struct MPT2SAS_ADAPTER *ioc, u16 handle, u8 *num_pds);
int mpt2sas_config_get_raid_volume_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2RaidVolPage0_t *config_page, u32 form, u32 handle, u16 sz);
int mpt2sas_config_get_phys_disk_pg0(struct MPT2SAS_ADAPTER *ioc, Mpi2ConfigReply_t
    *mpi_reply, Mpi2RaidPhysDiskPage0_t *config_page, u32 form,
    u32 form_specific);
int mpt2sas_config_get_volume_handle(struct MPT2SAS_ADAPTER *ioc, u16 pd_handle,
    u16 *volume_handle);
int mpt2sas_config_get_volume_wwid(struct MPT2SAS_ADAPTER *ioc, u16 volume_handle,
    u64 *wwid);
/* ctl shared API */
extern struct device_attribute *mpt2sas_host_attrs[];
extern struct device_attribute *mpt2sas_dev_attrs[];
void mpt2sas_ctl_init(void);
void mpt2sas_ctl_exit(void);
void mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply);
void mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase);
void mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, u32 reply);
void mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
    Mpi2EventNotificationReply_t *mpi_reply);

/* transport shared API */
void mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply);
struct _sas_port *mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc,
    u16 handle, u16 parent_handle);
void mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
    u16 parent_handle);
int mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
    *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev);
int mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
    *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev);
void mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc, u16 handle,
   u16 attached_handle, u8 phy_number, u8 link_rate);
extern struct sas_function_template mpt2sas_transport_functions;
extern struct scsi_transport_template *mpt2sas_transport_template;
extern int scsi_internal_device_block(struct scsi_device *sdev);
extern int scsi_internal_device_unblock(struct scsi_device *sdev);

#endif /* MPT2SAS_BASE_H_INCLUDED */