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#ifndef __MEGARAID_H__

#define __MEGARAID_H__

#ifndef LINUX_VERSION_CODE

#include <linux/version.h>

#endif

#define IN_ISR                  0x80000000L

#define NO_INTR                 0x40000000L

#define IN_TIMEOUT              0x20000000L

#define PENDING                 0x10000000L

#define BOARD_QUARTZ            0x08000000L

#define SCB_ACTIVE 0x1

#define SCB_WAITQ  0x2

#define SCB_ISSUED 0x4

#define SCB_FREE                -1

#define SCB_RESET               -2

#define SCB_ABORT               -3

#define SCB_LOCKED              -4

#define MEGA_CMD_TIMEOUT        10

#define MAX_SGLIST              17

#define MAX_COMMANDS            254

#define MAX_LOGICAL_DRIVES      8

#define MAX_CHANNEL             5

#define MAX_TARGET              15

#define MAX_PHYSICAL_DRIVES     MAX_CHANNEL*MAX_TARGET

#define INQUIRY_DATA_SIZE       0x24

#define MAX_CDB_LEN             0x0A

#define MAX_REQ_SENSE_LEN       0x20

#define INTR_VALID              0x40

/* Mailbox commands */

#define MEGA_MBOXCMD_LREAD      0x01

#define MEGA_MBOXCMD_LWRITE     0x02

#define MEGA_MBOXCMD_PASSTHRU   0x03

#define MEGA_MBOXCMD_ADAPTERINQ 0x05

/* Offsets into Mailbox */

#define COMMAND_PORT       0x00

#define COMMAND_ID_PORT    0x01

#define SG_LIST_PORT0      0x08

#define SG_LIST_PORT1      0x09

#define SG_LIST_PORT2      0x0a

#define SG_LIST_PORT3      0x0b

#define SG_ELEMENT_PORT    0x0d

#define NO_FIRED_PORT      0x0f

/* I/O Port offsets */

#define I_CMD_PORT         0x00

#define I_ACK_PORT         0x00

#define I_TOGGLE_PORT      0x01

#define INTR_PORT          0x0a

#define MAILBOX_SIZE       70

#define MBOX_BUSY_PORT     0x00

#define MBOX_PORT0         0x04

#define MBOX_PORT1         0x05

#define MBOX_PORT2         0x06

#define MBOX_PORT3         0x07

#define ENABLE_MBOX_REGION 0x0B

/* I/O Port Values */

#define ISSUE_BYTE         0x10

#define ACK_BYTE           0x08

#define ENABLE_INTR_BYTE   0xc0

#define DISABLE_INTR_BYTE  0x00

#define VALID_INTR_BYTE    0x40

#define MBOX_BUSY_BYTE     0x10

#define ENABLE_MBOX_BYTE   0x00

/* Setup some port macros here */

#define WRITE_MAILBOX(base,offset,value)   *(base+offset)=value

#define READ_MAILBOX(base,offset)          *(base+offset)

#define WRITE_PORT(base,offset,value)      outb_p(value,base+offset)

#define READ_PORT(base,offset)             inb_p(base+offset)

#define ISSUE_COMMAND(base)   WRITE_PORT(base,I_CMD_PORT,ISSUE_BYTE)

#define CLEAR_INTR(base)      WRITE_PORT(base,I_ACK_PORT,ACK_BYTE)

#define ENABLE_INTR(base)     WRITE_PORT(base,I_TOGGLE_PORT,ENABLE_INTR_BYTE)

#define DISABLE_INTR(base)    WRITE_PORT(base,I_TOGGLE_PORT,DISABLE_INTR_BYTE)

/* Define AMI's PCI codes */

#undef PCI_VENDOR_ID_AMI

#undef PCI_DEVICE_ID_AMI_MEGARAID

#ifndef PCI_VENDOR_ID_AMI

#define PCI_VENDOR_ID_AMI          0x101E

#define PCI_DEVICE_ID_AMI_MEGARAID 0x9010

#endif

#define PCI_CONF_BASE_ADDR_OFFSET  0x10

#define PCI_CONF_IRQ_OFFSET        0x3c

#define PCI_CONF_AMISIG            0xa0

#define AMI_SIGNATURE              0x11223344

#if LINUX_VERSION_CODE < 0x20100

#define MEGARAID \

  { NULL,                               /* Next                      */\

    NULL,                               /* Usage Count Pointer       */\

    NULL,                               /* /proc Directory Entry     */\

    megaraid_proc_info,                 /* /proc Info Function       */\

    "MegaRAID",                         /* Driver Name               */\

    megaraid_detect,                    /* Detect Host Adapter       */\

    megaraid_release,                   /* Release Host Adapter      */\

    megaraid_info,                      /* Driver Info Function      */\

    megaraid_command,                   /* Command Function          */\

    megaraid_queue,                     /* Queue Command Function    */\

    megaraid_abort,                     /* Abort Command Function    */\

    megaraid_reset,                     /* Reset Command Function    */\

    NULL,                               /* Slave Attach Function     */\

    megaraid_biosparam,                 /* Disk BIOS Parameters      */\

    254,                                /* # of cmds that can be\

                                           outstanding at any time */\

    7,                                  /* HBA Target ID             */\

    MAX_SGLIST,                         /* Scatter/Gather Table Size */\

    64,                                 /* SCSI Commands per LUN     */\

    0,                                  /* Present                   */\

    0,                                  /* Default Unchecked ISA DMA */\

    ENABLE_CLUSTERING }         /* Enable Clustering         */

#else

#define MEGARAID \

  {\

    name:            "MegaRAID",               /* Driver Name               */\

    proc_info:        megaraid_proc_info,      /* /proc driver info         */\

    detect:           megaraid_detect,         /* Detect Host Adapter       */\

    release:          megaraid_release,        /* Release Host Adapter      */\

    info:             megaraid_info,           /* Driver Info Function      */\

    command:          megaraid_command,        /* Command Function          */\

    queuecommand:     megaraid_queue,          /* Queue Command Function    */\

    abort:            megaraid_abort,          /* Abort Command Function    */\

    reset:            megaraid_reset,          /* Reset Command Function    */\

    bios_param:       megaraid_biosparam,      /* Disk BIOS Parameters      */\

    can_queue:        254,                     /* Can Queue                 */\

    this_id:          7,                       /* HBA Target ID             */\

    sg_tablesize:     MAX_SGLIST,              /* Scatter/Gather Table Size */\

    cmd_per_lun:      64,                      /* SCSI Commands per LUN     */\

    present:          0,                       /* Present                   */\

    unchecked_isa_dma:0,                       /* Default Unchecked ISA DMA */\

    use_clustering:   ENABLE_CLUSTERING       /* Enable Clustering         */\

  }

#endif

/* Structures */

typedef struct _mega_ADP_INFO {

    u_char MaxConcCmds;

    u_char RbldRate;

    u_char MaxTargPerChan;

    u_char ChanPresent;

    u_char FwVer[4];

    u_short AgeOfFlash;

    u_char ChipSet;

    u_char DRAMSize;

    u_char CacheFlushInterval;

    u_char BiosVer[4];

    u_char resvd[7];

} mega_ADP_INFO;

typedef struct _mega_LDRV_INFO {

    u_char NumLDrv;

    u_char resvd[3];

    u_long LDrvSize[MAX_LOGICAL_DRIVES];

    u_char LDrvProp[MAX_LOGICAL_DRIVES];

    u_char LDrvState[MAX_LOGICAL_DRIVES];

} mega_LDRV_INFO;

typedef struct _mega_PDRV_INFO {

    u_char PDrvState[MAX_PHYSICAL_DRIVES];

    u_char resvd;

} mega_PDRV_INFO;

// RAID inquiry: Mailbox command 0x5

typedef struct _mega_RAIDINQ {

    mega_ADP_INFO AdpInfo;

    mega_LDRV_INFO LogdrvInfo;

    mega_PDRV_INFO PhysdrvInfo;

} mega_RAIDINQ;

// Passthrough command: Mailbox command 0x3

typedef struct mega_passthru {

    u_char timeout:3;           /* 0=6sec/1=60sec/2=10min/3=3hrs */

    u_char ars:1;

    u_char reserved:3;

    u_char islogical:1;

    u_char logdrv;              /* if islogical == 1 */

    u_char channel;             /* if islogical == 0 */

    u_char target;              /* if islogical == 0 */

    u_char queuetag;            /* unused */

    u_char queueaction;         /* unused */

    u_char cdb[MAX_CDB_LEN];

    u_char cdblen;

    u_char reqsenselen;

    u_char reqsensearea[MAX_REQ_SENSE_LEN];

    u_char numsgelements;

    u_char scsistatus;

    u_long dataxferaddr;

    u_long dataxferlen;

} mega_passthru;

typedef struct _mega_mailbox {

    /* 0x0 */ u_char cmd;

    /* 0x1 */ u_char cmdid;

    /* 0x2 */ u_short numsectors;

    /* 0x4 */ u_long lba;

    /* 0x8 */ u_long xferaddr;

    /* 0xC */ u_char logdrv;

    /* 0xD */ u_char numsgelements;

    /* 0xE */ u_char resvd;

    /* 0xF */ u_char busy;

    /* 0x10 */ u_char numstatus;

    /* 0x11 */ u_char status;

    /* 0x12 */ u_char completed[46];

    u_char mraid_poll;

    u_char mraid_ack;

    u_char pad[16];

} mega_mailbox;

typedef struct _mega_ioctl_mbox {

    /* 0x0 */ u_char cmd;

    /* 0x1 */ u_char cmdid;

    /* 0x2 */ u_char channel;

    /* 0x3 */ u_char param;

    /* 0x4 */ u_char pad[4];

    /* 0x8 */ u_long xferaddr;

    /* 0xC */ u_char logdrv;

    /* 0xD */ u_char numsgelements;

    /* 0xE */ u_char resvd;

    /* 0xF */ u_char busy;

    /* 0x10 */ u_char numstatus;

    /* 0x11 */ u_char status;

    /* 0x12 */ u_char completed[46];

    u_char mraid_poll;

    u_char mraid_ack;

    u_char malign[16];

} mega_ioctl_mbox;

typedef struct _mega_sglist {

    u_long address;

    u_long length;

} mega_sglist;

/* Queued command data */

typedef struct _mega_scb mega_scb;

struct _mega_scb {

    int idx;

    u_long flag;

    Scsi_Cmnd *SCpnt;

    u_char mboxData[16];

    mega_passthru pthru;

    mega_sglist *sgList;

    mega_scb *next;

};

/* Per-controller data */

typedef struct _mega_host_config {

    u_char numldrv;

    u_long flag;

    u_long base;

    struct tq_struct megaTq;

    /* Host adapter parameters */

    u_char fwVer[7];

    u_char biosVer[7];

    struct Scsi_Host *host;

    /* The following must be DMA-able!! */

    volatile mega_mailbox *mbox;

    volatile mega_mailbox mailbox;

    volatile u_char mega_buffer[2 * 1024L];

    u_char max_cmds;

    mega_scb scbList[MAX_COMMANDS];

} mega_host_config;

extern struct proc_dir_entry proc_scsi_megaraid;

const char *megaraid_info(struct Scsi_Host *);

int megaraid_detect(Scsi_Host_Template *);

int megaraid_release(struct Scsi_Host *);

int megaraid_command(Scsi_Cmnd *);

int megaraid_abort(Scsi_Cmnd *);

int megaraid_reset(Scsi_Cmnd *, unsigned int);

int megaraid_queue(Scsi_Cmnd *, void (*done) (Scsi_Cmnd *));

int megaraid_biosparam(Disk *, kdev_t, int *);

int megaraid_proc_info(char *buffer, char **start, off_t offset,

                       int length, int hostno, int inout);

#endif