drivers/scsi/hpsa_cmd.h - arm/linux-arm64-legacy - Git at Google

 /*
  *    Disk Array driver for HP Smart Array SAS controllers
  *    Copyright 2000, 2014 Hewlett-Packard Development Company, L.P.
  *
  *    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; version 2 of the License.
  *
  *    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, GOOD TITLE or
  *    NON INFRINGEMENT.  See the GNU General Public License for more details.
  *
  *    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., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
  *    Questions/Comments/Bugfixes to iss_storagedev@hp.com
  *
  */
 #ifndef HPSA_CMD_H
 #define HPSA_CMD_H

 /* general boundary defintions */
 #define SENSEINFOBYTES          32 /* may vary between hbas */
 #define SG_ENTRIES_IN_CMD	32 /* Max SG entries excluding chain blocks */
 #define HPSA_SG_CHAIN		0x80000000
 #define HPSA_SG_LAST		0x40000000
 #define MAXREPLYQS              256

 /* Command Status value */
 #define CMD_SUCCESS             0x0000
 #define CMD_TARGET_STATUS       0x0001
 #define CMD_DATA_UNDERRUN       0x0002
 #define CMD_DATA_OVERRUN        0x0003
 #define CMD_INVALID             0x0004
 #define CMD_PROTOCOL_ERR        0x0005
 #define CMD_HARDWARE_ERR        0x0006
 #define CMD_CONNECTION_LOST     0x0007
 #define CMD_ABORTED             0x0008
 #define CMD_ABORT_FAILED        0x0009
 #define CMD_UNSOLICITED_ABORT   0x000A
 #define CMD_TIMEOUT             0x000B
 #define CMD_UNABORTABLE		0x000C
 #define CMD_IOACCEL_DISABLED	0x000E


 /* Unit Attentions ASC's as defined for the MSA2012sa */
 #define POWER_OR_RESET			0x29
 #define STATE_CHANGED			0x2a
 #define UNIT_ATTENTION_CLEARED		0x2f
 #define LUN_FAILED			0x3e
 #define REPORT_LUNS_CHANGED		0x3f

 /* Unit Attentions ASCQ's as defined for the MSA2012sa */

 	/* These ASCQ's defined for ASC = POWER_OR_RESET */
 #define POWER_ON_RESET			0x00
 #define POWER_ON_REBOOT			0x01
 #define SCSI_BUS_RESET			0x02
 #define MSA_TARGET_RESET		0x03
 #define CONTROLLER_FAILOVER		0x04
 #define TRANSCEIVER_SE			0x05
 #define TRANSCEIVER_LVD			0x06

 	/* These ASCQ's defined for ASC = STATE_CHANGED */
 #define RESERVATION_PREEMPTED		0x03
 #define ASYM_ACCESS_CHANGED		0x06
 #define LUN_CAPACITY_CHANGED		0x09

 /* transfer direction */
 #define XFER_NONE               0x00
 #define XFER_WRITE              0x01
 #define XFER_READ               0x02
 #define XFER_RSVD               0x03

 /* task attribute */
 #define ATTR_UNTAGGED           0x00
 #define ATTR_SIMPLE             0x04
 #define ATTR_HEADOFQUEUE        0x05
 #define ATTR_ORDERED            0x06
 #define ATTR_ACA                0x07

 /* cdb type */
 #define TYPE_CMD		0x00
 #define TYPE_MSG		0x01
 #define TYPE_IOACCEL2_CMD	0x81 /* 0x81 is not used by hardware */

 /* Message Types  */
 #define HPSA_TASK_MANAGEMENT    0x00
 #define HPSA_RESET              0x01
 #define HPSA_SCAN               0x02
 #define HPSA_NOOP               0x03

 #define HPSA_CTLR_RESET_TYPE    0x00
 #define HPSA_BUS_RESET_TYPE     0x01
 #define HPSA_TARGET_RESET_TYPE  0x03
 #define HPSA_LUN_RESET_TYPE     0x04
 #define HPSA_NEXUS_RESET_TYPE   0x05

 /* Task Management Functions */
 #define HPSA_TMF_ABORT_TASK     0x00
 #define HPSA_TMF_ABORT_TASK_SET 0x01
 #define HPSA_TMF_CLEAR_ACA      0x02
 #define HPSA_TMF_CLEAR_TASK_SET 0x03
 #define HPSA_TMF_QUERY_TASK     0x04
 #define HPSA_TMF_QUERY_TASK_SET 0x05
 #define HPSA_TMF_QUERY_ASYNCEVENT 0x06


 /* config space register offsets */
 #define CFG_VENDORID            0x00
 #define CFG_DEVICEID            0x02
 #define CFG_I2OBAR              0x10
 #define CFG_MEM1BAR             0x14

 /* i2o space register offsets */
 #define I2O_IBDB_SET            0x20
 #define I2O_IBDB_CLEAR          0x70
 #define I2O_INT_STATUS          0x30
 #define I2O_INT_MASK            0x34
 #define I2O_IBPOST_Q            0x40
 #define I2O_OBPOST_Q            0x44
 #define I2O_DMA1_CFG		0x214

 /* Configuration Table */
 #define CFGTBL_ChangeReq        0x00000001l
 #define CFGTBL_AccCmds          0x00000001l
 #define DOORBELL_CTLR_RESET	0x00000004l
 #define DOORBELL_CTLR_RESET2	0x00000020l
 #define DOORBELL_CLEAR_EVENTS	0x00000040l

 #define CFGTBL_Trans_Simple     0x00000002l
 #define CFGTBL_Trans_Performant 0x00000004l
 #define CFGTBL_Trans_io_accel1	0x00000080l
 #define CFGTBL_Trans_io_accel2	0x00000100l
 #define CFGTBL_Trans_use_short_tags 0x20000000l
 #define CFGTBL_Trans_enable_directed_msix (1 << 30)

 #define CFGTBL_BusType_Ultra2   0x00000001l
 #define CFGTBL_BusType_Ultra3   0x00000002l
 #define CFGTBL_BusType_Fibre1G  0x00000100l
 #define CFGTBL_BusType_Fibre2G  0x00000200l

 /* VPD Inquiry types */
 #define HPSA_VPD_SUPPORTED_PAGES        0x00
 #define HPSA_VPD_LV_DEVICE_GEOMETRY     0xC1
 #define HPSA_VPD_LV_IOACCEL_STATUS      0xC2
 #define HPSA_VPD_LV_STATUS		0xC3
 #define HPSA_VPD_HEADER_SZ              4

 /* Logical volume states */
 #define HPSA_VPD_LV_STATUS_UNSUPPORTED			0xff
 #define HPSA_LV_OK                                      0x0
 #define HPSA_LV_UNDERGOING_ERASE			0x0F
 #define HPSA_LV_UNDERGOING_RPI				0x12
 #define HPSA_LV_PENDING_RPI				0x13
 #define HPSA_LV_ENCRYPTED_NO_KEY			0x14
 #define HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER	0x15
 #define HPSA_LV_UNDERGOING_ENCRYPTION			0x16
 #define HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING		0x17
 #define HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER	0x18
 #define HPSA_LV_PENDING_ENCRYPTION			0x19
 #define HPSA_LV_PENDING_ENCRYPTION_REKEYING		0x1A

 struct vals32 {
 	u32   lower;
 	u32   upper;
 };

 union u64bit {
 	struct vals32 val32;
 	u64 val;
 };

 /* FIXME this is a per controller value (barf!) */
 #define HPSA_MAX_LUN 1024
 #define HPSA_MAX_PHYS_LUN 1024
 #define MAX_EXT_TARGETS 32
 #define HPSA_MAX_DEVICES (HPSA_MAX_PHYS_LUN + HPSA_MAX_LUN + \
 	MAX_EXT_TARGETS + 1) /* + 1 is for the controller itself */

 /* SCSI-3 Commands */
 #pragma pack(1)

 #define HPSA_INQUIRY 0x12
 struct InquiryData {
 	u8 data_byte[36];
 };

 #define HPSA_REPORT_LOG 0xc2    /* Report Logical LUNs */
 #define HPSA_REPORT_PHYS 0xc3   /* Report Physical LUNs */
 #define HPSA_REPORT_PHYS_EXTENDED 0x02
 #define HPSA_CISS_READ	0xc0	/* CISS Read */
 #define HPSA_GET_RAID_MAP 0xc8	/* CISS Get RAID Layout Map */

 #define RAID_MAP_MAX_ENTRIES   256

 struct raid_map_disk_data {
 	u32   ioaccel_handle;         /**< Handle to access this disk via the
 					*  I/O accelerator */
 	u8    xor_mult[2];            /**< XOR multipliers for this position,
 					*  valid for data disks only */
 	u8    reserved[2];
 };

 struct raid_map_data {
 	u32   structure_size;		/* Size of entire structure in bytes */
 	u32   volume_blk_size;		/* bytes / block in the volume */
 	u64   volume_blk_cnt;		/* logical blocks on the volume */
 	u8    phys_blk_shift;		/* Shift factor to convert between
 					 * units of logical blocks and physical
 					 * disk blocks */
 	u8    parity_rotation_shift;	/* Shift factor to convert between units
 					 * of logical stripes and physical
 					 * stripes */
 	u16   strip_size;		/* blocks used on each disk / stripe */
 	u64   disk_starting_blk;	/* First disk block used in volume */
 	u64   disk_blk_cnt;		/* disk blocks used by volume / disk */
 	u16   data_disks_per_row;	/* data disk entries / row in the map */
 	u16   metadata_disks_per_row;	/* mirror/parity disk entries / row
 					 * in the map */
 	u16   row_cnt;			/* rows in each layout map */
 	u16   layout_map_count;		/* layout maps (1 map per mirror/parity
 					 * group) */
 	u16   flags;			/* Bit 0 set if encryption enabled */
 #define RAID_MAP_FLAG_ENCRYPT_ON  0x01
 	u16   dekindex;			/* Data encryption key index. */
 	u8    reserved[16];
 	struct raid_map_disk_data data[RAID_MAP_MAX_ENTRIES];
 };

 struct ReportLUNdata {
 	u8 LUNListLength[4];
 	u8 extended_response_flag;
 	u8 reserved[3];
 	u8 LUN[HPSA_MAX_LUN][8];
 };

 struct ext_report_lun_entry {
 	u8 lunid[8];
 	u8 wwid[8];
 	u8 device_type;
 	u8 device_flags;
 	u8 lun_count; /* multi-lun device, how many luns */
 	u8 redundant_paths;
 	u32 ioaccel_handle; /* ioaccel1 only uses lower 16 bits */
 };

 struct ReportExtendedLUNdata {
 	u8 LUNListLength[4];
 	u8 extended_response_flag;
 	u8 reserved[3];
 	struct ext_report_lun_entry LUN[HPSA_MAX_LUN];
 };

 struct SenseSubsystem_info {
 	u8 reserved[36];
 	u8 portname[8];
 	u8 reserved1[1108];
 };

 /* BMIC commands */
 #define BMIC_READ 0x26
 #define BMIC_WRITE 0x27
 #define BMIC_CACHE_FLUSH 0xc2
 #define HPSA_CACHE_FLUSH 0x01	/* C2 was already being used by HPSA */
 #define BMIC_FLASH_FIRMWARE 0xF7
 #define BMIC_SENSE_CONTROLLER_PARAMETERS 0x64

 /* Command List Structure */
 union SCSI3Addr {
 	struct {
 		u8 Dev;
 		u8 Bus:6;
 		u8 Mode:2;        /* b00 */
 	} PeripDev;
 	struct {
 		u8 DevLSB;
 		u8 DevMSB:6;
 		u8 Mode:2;        /* b01 */
 	} LogDev;
 	struct {
 		u8 Dev:5;
 		u8 Bus:3;
 		u8 Targ:6;
 		u8 Mode:2;        /* b10 */
 	} LogUnit;
 };

 struct PhysDevAddr {
 	u32             TargetId:24;
 	u32             Bus:6;
 	u32             Mode:2;
 	/* 2 level target device addr */
 	union SCSI3Addr  Target[2];
 };

 struct LogDevAddr {
 	u32            VolId:30;
 	u32            Mode:2;
 	u8             reserved[4];
 };

 union LUNAddr {
 	u8               LunAddrBytes[8];
 	union SCSI3Addr    SCSI3Lun[4];
 	struct PhysDevAddr PhysDev;
 	struct LogDevAddr  LogDev;
 };

 struct CommandListHeader {
 	u8              ReplyQueue;
 	u8              SGList;
 	u16             SGTotal;
 	struct vals32     Tag;
 	union LUNAddr     LUN;
 };

 struct RequestBlock {
 	u8   CDBLen;
 	struct {
 		u8 Type:3;
 		u8 Attribute:3;
 		u8 Direction:2;
 	} Type;
 	u16  Timeout;
 	u8   CDB[16];
 };

 struct ErrDescriptor {
 	struct vals32 Addr;
 	u32  Len;
 };

 struct SGDescriptor {
 	struct vals32 Addr;
 	u32  Len;
 	u32  Ext;
 };

 union MoreErrInfo {
 	struct {
 		u8  Reserved[3];
 		u8  Type;
 		u32 ErrorInfo;
 	} Common_Info;
 	struct {
 		u8  Reserved[2];
 		u8  offense_size; /* size of offending entry */
 		u8  offense_num;  /* byte # of offense 0-base */
 		u32 offense_value;
 	} Invalid_Cmd;
 };
 struct ErrorInfo {
 	u8               ScsiStatus;
 	u8               SenseLen;
 	u16              CommandStatus;
 	u32              ResidualCnt;
 	union MoreErrInfo  MoreErrInfo;
 	u8               SenseInfo[SENSEINFOBYTES];
 };
 /* Command types */
 #define CMD_IOCTL_PEND  0x01
 #define CMD_SCSI	0x03
 #define CMD_IOACCEL1	0x04
 #define CMD_IOACCEL2	0x05

 #define DIRECT_LOOKUP_SHIFT 5
 #define DIRECT_LOOKUP_BIT 0x10
 #define DIRECT_LOOKUP_MASK (~((1 << DIRECT_LOOKUP_SHIFT) - 1))

 #define HPSA_ERROR_BIT          0x02
 struct ctlr_info; /* defined in hpsa.h */
 /* The size of this structure needs to be divisible by 32
  * on all architectures because low 5 bits of the addresses
  * are used as follows:
  *
  * bit 0: to device, used to indicate "performant mode" command
  *        from device, indidcates error status.
  * bit 1-3: to device, indicates block fetch table entry for
  *          reducing DMA in fetching commands from host memory.
  * bit 4: used to indicate whether tag is "direct lookup" (index),
  *        or a bus address.
  */

 #define COMMANDLIST_ALIGNMENT 128
 struct CommandList {
 	struct CommandListHeader Header;
 	struct RequestBlock      Request;
 	struct ErrDescriptor     ErrDesc;
 	struct SGDescriptor      SG[SG_ENTRIES_IN_CMD];
 	/* information associated with the command */
 	u32			   busaddr; /* physical addr of this record */
 	struct ErrorInfo *err_info; /* pointer to the allocated mem */
 	struct ctlr_info	   *h;
 	int			   cmd_type;
 	long			   cmdindex;
 	struct list_head list;
 	struct completion *waiting;
 	void   *scsi_cmd;
 } __aligned(COMMANDLIST_ALIGNMENT);

 /* Max S/G elements in I/O accelerator command */
 #define IOACCEL1_MAXSGENTRIES           24
 #define IOACCEL2_MAXSGENTRIES		28

 /*
  * Structure for I/O accelerator (mode 1) commands.
  * Note that this structure must be 128-byte aligned in size.
  */
 #define IOACCEL1_COMMANDLIST_ALIGNMENT 128
 struct io_accel1_cmd {
 	u16 dev_handle;			/* 0x00 - 0x01 */
 	u8  reserved1;			/* 0x02 */
 	u8  function;			/* 0x03 */
 	u8  reserved2[8];		/* 0x04 - 0x0B */
 	u32 err_info;			/* 0x0C - 0x0F */
 	u8  reserved3[2];		/* 0x10 - 0x11 */
 	u8  err_info_len;		/* 0x12 */
 	u8  reserved4;			/* 0x13 */
 	u8  sgl_offset;			/* 0x14 */
 	u8  reserved5[7];		/* 0x15 - 0x1B */
 	u32 transfer_len;		/* 0x1C - 0x1F */
 	u8  reserved6[4];		/* 0x20 - 0x23 */
 	u16 io_flags;			/* 0x24 - 0x25 */
 	u8  reserved7[14];		/* 0x26 - 0x33 */
 	u8  LUN[8];			/* 0x34 - 0x3B */
 	u32 control;			/* 0x3C - 0x3F */
 	u8  CDB[16];			/* 0x40 - 0x4F */
 	u8  reserved8[16];		/* 0x50 - 0x5F */
 	u16 host_context_flags;		/* 0x60 - 0x61 */
 	u16 timeout_sec;		/* 0x62 - 0x63 */
 	u8  ReplyQueue;			/* 0x64 */
 	u8  reserved9[3];		/* 0x65 - 0x67 */
 	struct vals32 Tag;		/* 0x68 - 0x6F */
 	struct vals32 host_addr;	/* 0x70 - 0x77 */
 	u8  CISS_LUN[8];		/* 0x78 - 0x7F */
 	struct SGDescriptor SG[IOACCEL1_MAXSGENTRIES];
 } __aligned(IOACCEL1_COMMANDLIST_ALIGNMENT);

 #define IOACCEL1_FUNCTION_SCSIIO        0x00
 #define IOACCEL1_SGLOFFSET              32

 #define IOACCEL1_IOFLAGS_IO_REQ         0x4000
 #define IOACCEL1_IOFLAGS_CDBLEN_MASK    0x001F
 #define IOACCEL1_IOFLAGS_CDBLEN_MAX     16

 #define IOACCEL1_CONTROL_NODATAXFER     0x00000000
 #define IOACCEL1_CONTROL_DATA_OUT       0x01000000
 #define IOACCEL1_CONTROL_DATA_IN        0x02000000
 #define IOACCEL1_CONTROL_TASKPRIO_MASK  0x00007800
 #define IOACCEL1_CONTROL_TASKPRIO_SHIFT 11
 #define IOACCEL1_CONTROL_SIMPLEQUEUE    0x00000000
 #define IOACCEL1_CONTROL_HEADOFQUEUE    0x00000100
 #define IOACCEL1_CONTROL_ORDEREDQUEUE   0x00000200
 #define IOACCEL1_CONTROL_ACA            0x00000400

 #define IOACCEL1_HCFLAGS_CISS_FORMAT    0x0013

 #define IOACCEL1_BUSADDR_CMDTYPE        0x00000060

 struct ioaccel2_sg_element {
 	u64 address;
 	u32 length;
 	u8 reserved[3];
 	u8 chain_indicator;
 #define IOACCEL2_CHAIN 0x80
 };

 /*
  * SCSI Response Format structure for IO Accelerator Mode 2
  */
 struct io_accel2_scsi_response {
 	u8 IU_type;
 #define IOACCEL2_IU_TYPE_SRF			0x60
 	u8 reserved1[3];
 	u8 req_id[4];		/* request identifier */
 	u8 reserved2[4];
 	u8 serv_response;		/* service response */
 #define IOACCEL2_SERV_RESPONSE_COMPLETE		0x000
 #define IOACCEL2_SERV_RESPONSE_FAILURE		0x001
 #define IOACCEL2_SERV_RESPONSE_TMF_COMPLETE	0x002
 #define IOACCEL2_SERV_RESPONSE_TMF_SUCCESS	0x003
 #define IOACCEL2_SERV_RESPONSE_TMF_REJECTED	0x004
 #define IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN	0x005
 	u8 status;			/* status */
 #define IOACCEL2_STATUS_SR_TASK_COMP_GOOD	0x00
 #define IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND	0x02
 #define IOACCEL2_STATUS_SR_TASK_COMP_BUSY	0x08
 #define IOACCEL2_STATUS_SR_TASK_COMP_RES_CON	0x18
 #define IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL	0x28
 #define IOACCEL2_STATUS_SR_TASK_COMP_ABORTED	0x40
 #define IOACCEL2_STATUS_SR_IOACCEL_DISABLED	0x0E
 	u8 data_present;		/* low 2 bits */
 #define IOACCEL2_NO_DATAPRESENT		0x000
 #define IOACCEL2_RESPONSE_DATAPRESENT	0x001
 #define IOACCEL2_SENSE_DATA_PRESENT	0x002
 #define IOACCEL2_RESERVED		0x003
 	u8 sense_data_len;		/* sense/response data length */
 	u8 resid_cnt[4];		/* residual count */
 	u8 sense_data_buff[32];		/* sense/response data buffer */
 };

 /*
  * Structure for I/O accelerator (mode 2 or m2) commands.
  * Note that this structure must be 128-byte aligned in size.
  */
 #define IOACCEL2_COMMANDLIST_ALIGNMENT 128
 struct io_accel2_cmd {
 	u8  IU_type;			/* IU Type */
 	u8  direction;			/* direction, memtype, and encryption */
 #define IOACCEL2_DIRECTION_MASK		0x03 /* bits 0,1: direction  */
 #define IOACCEL2_DIRECTION_MEMTYPE_MASK	0x04 /* bit 2: memtype source/dest */
 					     /*     0b=PCIe, 1b=DDR */
 #define IOACCEL2_DIRECTION_ENCRYPT_MASK	0x08 /* bit 3: encryption flag */
 					     /*     0=off, 1=on */
 	u8  reply_queue;		/* Reply Queue ID */
 	u8  reserved1;			/* Reserved */
 	u32 scsi_nexus;			/* Device Handle */
 	u32 Tag;			/* cciss tag, lower 4 bytes only */
 	u32 tweak_lower;		/* Encryption tweak, lower 4 bytes */
 	u8  cdb[16];			/* SCSI Command Descriptor Block */
 	u8  cciss_lun[8];		/* 8 byte SCSI address */
 	u32 data_len;			/* Total bytes to transfer */
 	u8  cmd_priority_task_attr;	/* priority and task attrs */
 #define IOACCEL2_PRIORITY_MASK 0x78
 #define IOACCEL2_ATTR_MASK 0x07
 	u8  sg_count;			/* Number of sg elements */
 	u16 dekindex;			/* Data encryption key index */
 	u64 err_ptr;			/* Error Pointer */
 	u32 err_len;			/* Error Length*/
 	u32 tweak_upper;		/* Encryption tweak, upper 4 bytes */
 	struct ioaccel2_sg_element sg[IOACCEL2_MAXSGENTRIES];
 	struct io_accel2_scsi_response error_data;
 } __aligned(IOACCEL2_COMMANDLIST_ALIGNMENT);

 /*
  * defines for Mode 2 command struct
  * FIXME: this can't be all I need mfm
  */
 #define IOACCEL2_IU_TYPE	0x40
 #define IOACCEL2_IU_TMF_TYPE	0x41
 #define IOACCEL2_DIR_NO_DATA	0x00
 #define IOACCEL2_DIR_DATA_IN	0x01
 #define IOACCEL2_DIR_DATA_OUT	0x02
 /*
  * SCSI Task Management Request format for Accelerator Mode 2
  */
 struct hpsa_tmf_struct {
 	u8 iu_type;		/* Information Unit Type */
 	u8 reply_queue;		/* Reply Queue ID */
 	u8 tmf;			/* Task Management Function */
 	u8 reserved1;		/* byte 3 Reserved */
 	u32 it_nexus;		/* SCSI I-T Nexus */
 	u8 lun_id[8];		/* LUN ID for TMF request */
 	struct vals32 Tag;	/* cciss tag associated w/ request */
 	struct vals32 abort_tag;/* cciss tag of SCSI cmd or task to abort */
 	u64 error_ptr;		/* Error Pointer */
 	u32 error_len;		/* Error Length */
 };

 /* Configuration Table Structure */
 struct HostWrite {
 	u32 TransportRequest;
 	u32 command_pool_addr_hi;
 	u32 CoalIntDelay;
 	u32 CoalIntCount;
 };

 #define SIMPLE_MODE     0x02
 #define PERFORMANT_MODE 0x04
 #define MEMQ_MODE       0x08
 #define IOACCEL_MODE_1  0x80

 #define DRIVER_SUPPORT_UA_ENABLE        0x00000001

 struct CfgTable {
 	u8            Signature[4];
 	u32		SpecValence;
 	u32           TransportSupport;
 	u32           TransportActive;
 	struct 		HostWrite HostWrite;
 	u32           CmdsOutMax;
 	u32           BusTypes;
 	u32           TransMethodOffset;
 	u8            ServerName[16];
 	u32           HeartBeat;
 	u32           driver_support;
 #define			ENABLE_SCSI_PREFETCH 0x100
 #define			ENABLE_UNIT_ATTN 0x01
 	u32	 	MaxScatterGatherElements;
 	u32		MaxLogicalUnits;
 	u32		MaxPhysicalDevices;
 	u32		MaxPhysicalDrivesPerLogicalUnit;
 	u32		MaxPerformantModeCommands;
 	u32		MaxBlockFetch;
 	u32		PowerConservationSupport;
 	u32		PowerConservationEnable;
 	u32		TMFSupportFlags;
 	u8		TMFTagMask[8];
 	u8		reserved[0x78 - 0x70];
 	u32		misc_fw_support; /* offset 0x78 */
 #define			MISC_FW_DOORBELL_RESET (0x02)
 #define			MISC_FW_DOORBELL_RESET2 (0x010)
 #define			MISC_FW_RAID_OFFLOAD_BASIC (0x020)
 #define			MISC_FW_EVENT_NOTIFY (0x080)
 	u8		driver_version[32];
 	u32             max_cached_write_size;
 	u8              driver_scratchpad[16];
 	u32             max_error_info_length;
 	u32		io_accel_max_embedded_sg_count;
 	u32		io_accel_request_size_offset;
 	u32		event_notify;
 #define HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE (1 << 30)
 #define HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE (1 << 31)
 	u32		clear_event_notify;
 };

 #define NUM_BLOCKFETCH_ENTRIES 8
 struct TransTable_struct {
 	u32            BlockFetch[NUM_BLOCKFETCH_ENTRIES];
 	u32            RepQSize;
 	u32            RepQCount;
 	u32            RepQCtrAddrLow32;
 	u32            RepQCtrAddrHigh32;
 #define MAX_REPLY_QUEUES 64
 	struct vals32  RepQAddr[MAX_REPLY_QUEUES];
 };

 struct hpsa_pci_info {
 	unsigned char	bus;
 	unsigned char	dev_fn;
 	unsigned short	domain;
 	u32		board_id;
 };

 #pragma pack()
 #endif /* HPSA_CMD_H */
	/*
	* Disk Array driver for HP Smart Array SAS controllers
	* Copyright 2000, 2014 Hewlett-Packard Development Company, L.P.
	*
	* 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; version 2 of the License.
	*
	* 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, GOOD TITLE or
	* NON INFRINGEMENT. See the GNU General Public License for more details.
	*
	* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
	*
	* Questions/Comments/Bugfixes to iss_storagedev@hp.com
	*
	*/
	#ifndef HPSA_CMD_H
	#define HPSA_CMD_H

	/* general boundary defintions */
	#define SENSEINFOBYTES 32 /* may vary between hbas */
	#define SG_ENTRIES_IN_CMD 32 /* Max SG entries excluding chain blocks */
	#define HPSA_SG_CHAIN 0x80000000
	#define HPSA_SG_LAST 0x40000000
	#define MAXREPLYQS 256

	/* Command Status value */
	#define CMD_SUCCESS 0x0000
	#define CMD_TARGET_STATUS 0x0001
	#define CMD_DATA_UNDERRUN 0x0002
	#define CMD_DATA_OVERRUN 0x0003
	#define CMD_INVALID 0x0004
	#define CMD_PROTOCOL_ERR 0x0005
	#define CMD_HARDWARE_ERR 0x0006
	#define CMD_CONNECTION_LOST 0x0007
	#define CMD_ABORTED 0x0008
	#define CMD_ABORT_FAILED 0x0009
	#define CMD_UNSOLICITED_ABORT 0x000A
	#define CMD_TIMEOUT 0x000B
	#define CMD_UNABORTABLE 0x000C
	#define CMD_IOACCEL_DISABLED 0x000E


	/* Unit Attentions ASC's as defined for the MSA2012sa */
	#define POWER_OR_RESET 0x29
	#define STATE_CHANGED 0x2a
	#define UNIT_ATTENTION_CLEARED 0x2f
	#define LUN_FAILED 0x3e
	#define REPORT_LUNS_CHANGED 0x3f

	/* Unit Attentions ASCQ's as defined for the MSA2012sa */

	/* These ASCQ's defined for ASC = POWER_OR_RESET */
	#define POWER_ON_RESET 0x00
	#define POWER_ON_REBOOT 0x01
	#define SCSI_BUS_RESET 0x02
	#define MSA_TARGET_RESET 0x03
	#define CONTROLLER_FAILOVER 0x04
	#define TRANSCEIVER_SE 0x05
	#define TRANSCEIVER_LVD 0x06

	/* These ASCQ's defined for ASC = STATE_CHANGED */
	#define RESERVATION_PREEMPTED 0x03
	#define ASYM_ACCESS_CHANGED 0x06
	#define LUN_CAPACITY_CHANGED 0x09

	/* transfer direction */
	#define XFER_NONE 0x00
	#define XFER_WRITE 0x01
	#define XFER_READ 0x02
	#define XFER_RSVD 0x03

	/* task attribute */
	#define ATTR_UNTAGGED 0x00
	#define ATTR_SIMPLE 0x04
	#define ATTR_HEADOFQUEUE 0x05
	#define ATTR_ORDERED 0x06
	#define ATTR_ACA 0x07

	/* cdb type */
	#define TYPE_CMD 0x00
	#define TYPE_MSG 0x01
	#define TYPE_IOACCEL2_CMD 0x81 /* 0x81 is not used by hardware */

	/* Message Types */
	#define HPSA_TASK_MANAGEMENT 0x00
	#define HPSA_RESET 0x01
	#define HPSA_SCAN 0x02
	#define HPSA_NOOP 0x03

	#define HPSA_CTLR_RESET_TYPE 0x00
	#define HPSA_BUS_RESET_TYPE 0x01
	#define HPSA_TARGET_RESET_TYPE 0x03
	#define HPSA_LUN_RESET_TYPE 0x04
	#define HPSA_NEXUS_RESET_TYPE 0x05

	/* Task Management Functions */
	#define HPSA_TMF_ABORT_TASK 0x00
	#define HPSA_TMF_ABORT_TASK_SET 0x01
	#define HPSA_TMF_CLEAR_ACA 0x02
	#define HPSA_TMF_CLEAR_TASK_SET 0x03
	#define HPSA_TMF_QUERY_TASK 0x04
	#define HPSA_TMF_QUERY_TASK_SET 0x05
	#define HPSA_TMF_QUERY_ASYNCEVENT 0x06



	/* config space register offsets */
	#define CFG_VENDORID 0x00
	#define CFG_DEVICEID 0x02
	#define CFG_I2OBAR 0x10
	#define CFG_MEM1BAR 0x14

	/* i2o space register offsets */
	#define I2O_IBDB_SET 0x20
	#define I2O_IBDB_CLEAR 0x70
	#define I2O_INT_STATUS 0x30
	#define I2O_INT_MASK 0x34
	#define I2O_IBPOST_Q 0x40
	#define I2O_OBPOST_Q 0x44
	#define I2O_DMA1_CFG 0x214

	/* Configuration Table */
	#define CFGTBL_ChangeReq 0x00000001l
	#define CFGTBL_AccCmds 0x00000001l
	#define DOORBELL_CTLR_RESET 0x00000004l
	#define DOORBELL_CTLR_RESET2 0x00000020l
	#define DOORBELL_CLEAR_EVENTS 0x00000040l

	#define CFGTBL_Trans_Simple 0x00000002l
	#define CFGTBL_Trans_Performant 0x00000004l
	#define CFGTBL_Trans_io_accel1 0x00000080l
	#define CFGTBL_Trans_io_accel2 0x00000100l
	#define CFGTBL_Trans_use_short_tags 0x20000000l
	#define CFGTBL_Trans_enable_directed_msix (1 << 30)

	#define CFGTBL_BusType_Ultra2 0x00000001l
	#define CFGTBL_BusType_Ultra3 0x00000002l
	#define CFGTBL_BusType_Fibre1G 0x00000100l
	#define CFGTBL_BusType_Fibre2G 0x00000200l

	/* VPD Inquiry types */
	#define HPSA_VPD_SUPPORTED_PAGES 0x00
	#define HPSA_VPD_LV_DEVICE_GEOMETRY 0xC1
	#define HPSA_VPD_LV_IOACCEL_STATUS 0xC2
	#define HPSA_VPD_LV_STATUS 0xC3
	#define HPSA_VPD_HEADER_SZ 4

	/* Logical volume states */
	#define HPSA_VPD_LV_STATUS_UNSUPPORTED 0xff
	#define HPSA_LV_OK 0x0
	#define HPSA_LV_UNDERGOING_ERASE 0x0F
	#define HPSA_LV_UNDERGOING_RPI 0x12
	#define HPSA_LV_PENDING_RPI 0x13
	#define HPSA_LV_ENCRYPTED_NO_KEY 0x14
	#define HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER 0x15
	#define HPSA_LV_UNDERGOING_ENCRYPTION 0x16
	#define HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING 0x17
	#define HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER 0x18
	#define HPSA_LV_PENDING_ENCRYPTION 0x19
	#define HPSA_LV_PENDING_ENCRYPTION_REKEYING 0x1A

	struct vals32 {
	u32 lower;
	u32 upper;
	};

	union u64bit {
	struct vals32 val32;
	u64 val;
	};

	/* FIXME this is a per controller value (barf!) */
	#define HPSA_MAX_LUN 1024
	#define HPSA_MAX_PHYS_LUN 1024
	#define MAX_EXT_TARGETS 32
	#define HPSA_MAX_DEVICES (HPSA_MAX_PHYS_LUN + HPSA_MAX_LUN + \
	MAX_EXT_TARGETS + 1) /* + 1 is for the controller itself */

	/* SCSI-3 Commands */
	#pragma pack(1)

	#define HPSA_INQUIRY 0x12
	struct InquiryData {
	u8 data_byte[36];
	};

	#define HPSA_REPORT_LOG 0xc2 /* Report Logical LUNs */
	#define HPSA_REPORT_PHYS 0xc3 /* Report Physical LUNs */
	#define HPSA_REPORT_PHYS_EXTENDED 0x02
	#define HPSA_CISS_READ 0xc0 /* CISS Read */
	#define HPSA_GET_RAID_MAP 0xc8 /* CISS Get RAID Layout Map */

	#define RAID_MAP_MAX_ENTRIES 256

	struct raid_map_disk_data {
	u32 ioaccel_handle; /**< Handle to access this disk via the
	* I/O accelerator */
	u8 xor_mult[2]; /**< XOR multipliers for this position,
	* valid for data disks only */
	u8 reserved[2];
	};

	struct raid_map_data {
	u32 structure_size; /* Size of entire structure in bytes */
	u32 volume_blk_size; /* bytes / block in the volume */
	u64 volume_blk_cnt; /* logical blocks on the volume */
	u8 phys_blk_shift; /* Shift factor to convert between
	* units of logical blocks and physical
	* disk blocks */
	u8 parity_rotation_shift; /* Shift factor to convert between units
	* of logical stripes and physical
	* stripes */
	u16 strip_size; /* blocks used on each disk / stripe */
	u64 disk_starting_blk; /* First disk block used in volume */
	u64 disk_blk_cnt; /* disk blocks used by volume / disk */
	u16 data_disks_per_row; /* data disk entries / row in the map */
	u16 metadata_disks_per_row; /* mirror/parity disk entries / row
	* in the map */
	u16 row_cnt; /* rows in each layout map */
	u16 layout_map_count; /* layout maps (1 map per mirror/parity
	* group) */
	u16 flags; /* Bit 0 set if encryption enabled */
	#define RAID_MAP_FLAG_ENCRYPT_ON 0x01
	u16 dekindex; /* Data encryption key index. */
	u8 reserved[16];
	struct raid_map_disk_data data[RAID_MAP_MAX_ENTRIES];
	};

	struct ReportLUNdata {
	u8 LUNListLength[4];
	u8 extended_response_flag;
	u8 reserved[3];
	u8 LUN[HPSA_MAX_LUN][8];
	};

	struct ext_report_lun_entry {
	u8 lunid[8];
	u8 wwid[8];
	u8 device_type;
	u8 device_flags;
	u8 lun_count; /* multi-lun device, how many luns */
	u8 redundant_paths;
	u32 ioaccel_handle; /* ioaccel1 only uses lower 16 bits */
	};

	struct ReportExtendedLUNdata {
	u8 LUNListLength[4];
	u8 extended_response_flag;
	u8 reserved[3];
	struct ext_report_lun_entry LUN[HPSA_MAX_LUN];
	};

	struct SenseSubsystem_info {
	u8 reserved[36];
	u8 portname[8];
	u8 reserved1[1108];
	};

	/* BMIC commands */
	#define BMIC_READ 0x26
	#define BMIC_WRITE 0x27
	#define BMIC_CACHE_FLUSH 0xc2
	#define HPSA_CACHE_FLUSH 0x01 /* C2 was already being used by HPSA */
	#define BMIC_FLASH_FIRMWARE 0xF7
	#define BMIC_SENSE_CONTROLLER_PARAMETERS 0x64

	/* Command List Structure */
	union SCSI3Addr {
	struct {
	u8 Dev;
	u8 Bus:6;
	u8 Mode:2; /* b00 */
	} PeripDev;
	struct {
	u8 DevLSB;
	u8 DevMSB:6;
	u8 Mode:2; /* b01 */
	} LogDev;
	struct {
	u8 Dev:5;
	u8 Bus:3;
	u8 Targ:6;
	u8 Mode:2; /* b10 */
	} LogUnit;
	};

	struct PhysDevAddr {
	u32 TargetId:24;
	u32 Bus:6;
	u32 Mode:2;
	/* 2 level target device addr */
	union SCSI3Addr Target[2];
	};

	struct LogDevAddr {
	u32 VolId:30;
	u32 Mode:2;
	u8 reserved[4];
	};

	union LUNAddr {
	u8 LunAddrBytes[8];
	union SCSI3Addr SCSI3Lun[4];
	struct PhysDevAddr PhysDev;
	struct LogDevAddr LogDev;
	};

	struct CommandListHeader {
	u8 ReplyQueue;
	u8 SGList;
	u16 SGTotal;
	struct vals32 Tag;
	union LUNAddr LUN;
	};

	struct RequestBlock {
	u8 CDBLen;
	struct {
	u8 Type:3;
	u8 Attribute:3;
	u8 Direction:2;
	} Type;
	u16 Timeout;
	u8 CDB[16];
	};

	struct ErrDescriptor {
	struct vals32 Addr;
	u32 Len;
	};

	struct SGDescriptor {
	struct vals32 Addr;
	u32 Len;
	u32 Ext;
	};

	union MoreErrInfo {
	struct {
	u8 Reserved[3];
	u8 Type;
	u32 ErrorInfo;
	} Common_Info;
	struct {
	u8 Reserved[2];
	u8 offense_size; /* size of offending entry */
	u8 offense_num; /* byte # of offense 0-base */
	u32 offense_value;
	} Invalid_Cmd;
	};
	struct ErrorInfo {
	u8 ScsiStatus;
	u8 SenseLen;
	u16 CommandStatus;
	u32 ResidualCnt;
	union MoreErrInfo MoreErrInfo;
	u8 SenseInfo[SENSEINFOBYTES];
	};
	/* Command types */
	#define CMD_IOCTL_PEND 0x01
	#define CMD_SCSI 0x03
	#define CMD_IOACCEL1 0x04
	#define CMD_IOACCEL2 0x05

	#define DIRECT_LOOKUP_SHIFT 5
	#define DIRECT_LOOKUP_BIT 0x10
	#define DIRECT_LOOKUP_MASK (~((1 << DIRECT_LOOKUP_SHIFT) - 1))

	#define HPSA_ERROR_BIT 0x02
	struct ctlr_info; /* defined in hpsa.h */
	/* The size of this structure needs to be divisible by 32
	* on all architectures because low 5 bits of the addresses
	* are used as follows:
	*
	* bit 0: to device, used to indicate "performant mode" command
	* from device, indidcates error status.
	* bit 1-3: to device, indicates block fetch table entry for
	* reducing DMA in fetching commands from host memory.
	* bit 4: used to indicate whether tag is "direct lookup" (index),
	* or a bus address.
	*/

	#define COMMANDLIST_ALIGNMENT 128
	struct CommandList {
	struct CommandListHeader Header;
	struct RequestBlock Request;
	struct ErrDescriptor ErrDesc;
	struct SGDescriptor SG[SG_ENTRIES_IN_CMD];
	/* information associated with the command */
	u32 busaddr; /* physical addr of this record */
	struct ErrorInfo err_info; / pointer to the allocated mem */
	struct ctlr_info *h;
	int cmd_type;
	long cmdindex;
	struct list_head list;
	struct completion *waiting;
	void *scsi_cmd;
	} __aligned(COMMANDLIST_ALIGNMENT);

	/* Max S/G elements in I/O accelerator command */
	#define IOACCEL1_MAXSGENTRIES 24
	#define IOACCEL2_MAXSGENTRIES 28

	/*
	* Structure for I/O accelerator (mode 1) commands.
	* Note that this structure must be 128-byte aligned in size.
	*/
	#define IOACCEL1_COMMANDLIST_ALIGNMENT 128
	struct io_accel1_cmd {
	u16 dev_handle; /* 0x00 - 0x01 */
	u8 reserved1; /* 0x02 */
	u8 function; /* 0x03 */
	u8 reserved2[8]; /* 0x04 - 0x0B */
	u32 err_info; /* 0x0C - 0x0F */
	u8 reserved3[2]; /* 0x10 - 0x11 */
	u8 err_info_len; /* 0x12 */
	u8 reserved4; /* 0x13 */
	u8 sgl_offset; /* 0x14 */
	u8 reserved5[7]; /* 0x15 - 0x1B */
	u32 transfer_len; /* 0x1C - 0x1F */
	u8 reserved6[4]; /* 0x20 - 0x23 */
	u16 io_flags; /* 0x24 - 0x25 */
	u8 reserved7[14]; /* 0x26 - 0x33 */
	u8 LUN[8]; /* 0x34 - 0x3B */
	u32 control; /* 0x3C - 0x3F */
	u8 CDB[16]; /* 0x40 - 0x4F */
	u8 reserved8[16]; /* 0x50 - 0x5F */
	u16 host_context_flags; /* 0x60 - 0x61 */
	u16 timeout_sec; /* 0x62 - 0x63 */
	u8 ReplyQueue; /* 0x64 */
	u8 reserved9[3]; /* 0x65 - 0x67 */
	struct vals32 Tag; /* 0x68 - 0x6F */
	struct vals32 host_addr; /* 0x70 - 0x77 */
	u8 CISS_LUN[8]; /* 0x78 - 0x7F */
	struct SGDescriptor SG[IOACCEL1_MAXSGENTRIES];
	} __aligned(IOACCEL1_COMMANDLIST_ALIGNMENT);

	#define IOACCEL1_FUNCTION_SCSIIO 0x00
	#define IOACCEL1_SGLOFFSET 32

	#define IOACCEL1_IOFLAGS_IO_REQ 0x4000
	#define IOACCEL1_IOFLAGS_CDBLEN_MASK 0x001F
	#define IOACCEL1_IOFLAGS_CDBLEN_MAX 16

	#define IOACCEL1_CONTROL_NODATAXFER 0x00000000
	#define IOACCEL1_CONTROL_DATA_OUT 0x01000000
	#define IOACCEL1_CONTROL_DATA_IN 0x02000000
	#define IOACCEL1_CONTROL_TASKPRIO_MASK 0x00007800
	#define IOACCEL1_CONTROL_TASKPRIO_SHIFT 11
	#define IOACCEL1_CONTROL_SIMPLEQUEUE 0x00000000
	#define IOACCEL1_CONTROL_HEADOFQUEUE 0x00000100
	#define IOACCEL1_CONTROL_ORDEREDQUEUE 0x00000200
	#define IOACCEL1_CONTROL_ACA 0x00000400

	#define IOACCEL1_HCFLAGS_CISS_FORMAT 0x0013

	#define IOACCEL1_BUSADDR_CMDTYPE 0x00000060

	struct ioaccel2_sg_element {
	u64 address;
	u32 length;
	u8 reserved[3];
	u8 chain_indicator;
	#define IOACCEL2_CHAIN 0x80
	};

	/*
	* SCSI Response Format structure for IO Accelerator Mode 2
	*/
	struct io_accel2_scsi_response {
	u8 IU_type;
	#define IOACCEL2_IU_TYPE_SRF 0x60
	u8 reserved1[3];
	u8 req_id[4]; /* request identifier */
	u8 reserved2[4];
	u8 serv_response; /* service response */
	#define IOACCEL2_SERV_RESPONSE_COMPLETE 0x000
	#define IOACCEL2_SERV_RESPONSE_FAILURE 0x001
	#define IOACCEL2_SERV_RESPONSE_TMF_COMPLETE 0x002
	#define IOACCEL2_SERV_RESPONSE_TMF_SUCCESS 0x003
	#define IOACCEL2_SERV_RESPONSE_TMF_REJECTED 0x004
	#define IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN 0x005
	u8 status; /* status */
	#define IOACCEL2_STATUS_SR_TASK_COMP_GOOD 0x00
	#define IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND 0x02
	#define IOACCEL2_STATUS_SR_TASK_COMP_BUSY 0x08
	#define IOACCEL2_STATUS_SR_TASK_COMP_RES_CON 0x18
	#define IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL 0x28
	#define IOACCEL2_STATUS_SR_TASK_COMP_ABORTED 0x40
	#define IOACCEL2_STATUS_SR_IOACCEL_DISABLED 0x0E
	u8 data_present; /* low 2 bits */
	#define IOACCEL2_NO_DATAPRESENT 0x000
	#define IOACCEL2_RESPONSE_DATAPRESENT 0x001
	#define IOACCEL2_SENSE_DATA_PRESENT 0x002
	#define IOACCEL2_RESERVED 0x003
	u8 sense_data_len; /* sense/response data length */
	u8 resid_cnt[4]; /* residual count */
	u8 sense_data_buff[32]; /* sense/response data buffer */
	};

	/*
	* Structure for I/O accelerator (mode 2 or m2) commands.
	* Note that this structure must be 128-byte aligned in size.
	*/
	#define IOACCEL2_COMMANDLIST_ALIGNMENT 128
	struct io_accel2_cmd {
	u8 IU_type; /* IU Type */
	u8 direction; /* direction, memtype, and encryption */
	#define IOACCEL2_DIRECTION_MASK 0x03 /* bits 0,1: direction */
	#define IOACCEL2_DIRECTION_MEMTYPE_MASK 0x04 /* bit 2: memtype source/dest */
	/* 0b=PCIe, 1b=DDR */
	#define IOACCEL2_DIRECTION_ENCRYPT_MASK 0x08 /* bit 3: encryption flag */
	/* 0=off, 1=on */
	u8 reply_queue; /* Reply Queue ID */
	u8 reserved1; /* Reserved */
	u32 scsi_nexus; /* Device Handle */
	u32 Tag; /* cciss tag, lower 4 bytes only */
	u32 tweak_lower; /* Encryption tweak, lower 4 bytes */
	u8 cdb[16]; /* SCSI Command Descriptor Block */
	u8 cciss_lun[8]; /* 8 byte SCSI address */
	u32 data_len; /* Total bytes to transfer */
	u8 cmd_priority_task_attr; /* priority and task attrs */
	#define IOACCEL2_PRIORITY_MASK 0x78
	#define IOACCEL2_ATTR_MASK 0x07
	u8 sg_count; /* Number of sg elements */
	u16 dekindex; /* Data encryption key index */
	u64 err_ptr; /* Error Pointer */
	u32 err_len; /* Error Length*/
	u32 tweak_upper; /* Encryption tweak, upper 4 bytes */
	struct ioaccel2_sg_element sg[IOACCEL2_MAXSGENTRIES];
	struct io_accel2_scsi_response error_data;
	} __aligned(IOACCEL2_COMMANDLIST_ALIGNMENT);

	/*
	* defines for Mode 2 command struct
	* FIXME: this can't be all I need mfm
	*/
	#define IOACCEL2_IU_TYPE 0x40
	#define IOACCEL2_IU_TMF_TYPE 0x41
	#define IOACCEL2_DIR_NO_DATA 0x00
	#define IOACCEL2_DIR_DATA_IN 0x01
	#define IOACCEL2_DIR_DATA_OUT 0x02
	/*
	* SCSI Task Management Request format for Accelerator Mode 2
	*/
	struct hpsa_tmf_struct {
	u8 iu_type; /* Information Unit Type */
	u8 reply_queue; /* Reply Queue ID */
	u8 tmf; /* Task Management Function */
	u8 reserved1; /* byte 3 Reserved */
	u32 it_nexus; /* SCSI I-T Nexus */
	u8 lun_id[8]; /* LUN ID for TMF request */
	struct vals32 Tag; /* cciss tag associated w/ request */
	struct vals32 abort_tag;/* cciss tag of SCSI cmd or task to abort */
	u64 error_ptr; /* Error Pointer */
	u32 error_len; /* Error Length */
	};

	/* Configuration Table Structure */
	struct HostWrite {
	u32 TransportRequest;
	u32 command_pool_addr_hi;
	u32 CoalIntDelay;
	u32 CoalIntCount;
	};

	#define SIMPLE_MODE 0x02
	#define PERFORMANT_MODE 0x04
	#define MEMQ_MODE 0x08
	#define IOACCEL_MODE_1 0x80

	#define DRIVER_SUPPORT_UA_ENABLE 0x00000001

	struct CfgTable {
	u8 Signature[4];
	u32 SpecValence;
	u32 TransportSupport;
	u32 TransportActive;
	struct HostWrite HostWrite;
	u32 CmdsOutMax;
	u32 BusTypes;
	u32 TransMethodOffset;
	u8 ServerName[16];
	u32 HeartBeat;
	u32 driver_support;
	#define ENABLE_SCSI_PREFETCH 0x100
	#define ENABLE_UNIT_ATTN 0x01
	u32 MaxScatterGatherElements;
	u32 MaxLogicalUnits;
	u32 MaxPhysicalDevices;
	u32 MaxPhysicalDrivesPerLogicalUnit;
	u32 MaxPerformantModeCommands;
	u32 MaxBlockFetch;
	u32 PowerConservationSupport;
	u32 PowerConservationEnable;
	u32 TMFSupportFlags;
	u8 TMFTagMask[8];
	u8 reserved[0x78 - 0x70];
	u32 misc_fw_support; /* offset 0x78 */
	#define MISC_FW_DOORBELL_RESET (0x02)
	#define MISC_FW_DOORBELL_RESET2 (0x010)
	#define MISC_FW_RAID_OFFLOAD_BASIC (0x020)
	#define MISC_FW_EVENT_NOTIFY (0x080)
	u8 driver_version[32];
	u32 max_cached_write_size;
	u8 driver_scratchpad[16];
	u32 max_error_info_length;
	u32 io_accel_max_embedded_sg_count;
	u32 io_accel_request_size_offset;
	u32 event_notify;
	#define HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE (1 << 30)
	#define HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE (1 << 31)
	u32 clear_event_notify;
	};

	#define NUM_BLOCKFETCH_ENTRIES 8
	struct TransTable_struct {
	u32 BlockFetch[NUM_BLOCKFETCH_ENTRIES];
	u32 RepQSize;
	u32 RepQCount;
	u32 RepQCtrAddrLow32;
	u32 RepQCtrAddrHigh32;
	#define MAX_REPLY_QUEUES 64
	struct vals32 RepQAddr[MAX_REPLY_QUEUES];
	};

	struct hpsa_pci_info {
	unsigned char bus;
	unsigned char dev_fn;
	unsigned short domain;
	u32 board_id;
	};

	#pragma pack()
	#endif /* HPSA_CMD_H */