megaraid.h

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#ifndef __MEGARAID_H__
#define __MEGARAID_H__

#ifndef LINUX_VERSION_CODE
#include <linux/version.h>
#endif

#define IN_ISR                  0x80000000L
#define IN_ABORT                0x40000000L
#define IN_RESET                0x20000000L
#define IN_QUEUE                0x10000000L
#define BOARD_QUARTZ            0x08000000L
#define BOARD_40LD              0x04000000L

#ifndef HOSTS_C
#define SCB_FREE     0x0
#define SCB_ACTIVE   0x1
#define SCB_WAITQ    0x2
#define SCB_ISSUED   0x3
#define SCB_COMPLETE 0x4
#define SCB_ABORTED  0x5
#define SCB_RESET    0x6
#endif

#define MEGA_CMD_TIMEOUT        10

/* Feel free to fiddle with these.. max values are:
   SGLIST     0..26
   COMMANDS   0..253
   CMDPERLUN  0..63
*/
#define MAX_SGLIST              0x1A
#define MAX_COMMANDS            127
#define MAX_CMD_PER_LUN         63
#define MAX_FIRMWARE_STATUS     46

#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       (sizeof(mega_mailbox)-16)
#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              0x3344
#define AMI_SIGNATURE_471          0xCCCC

#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      */\
    MAX_COMMANDS,                       /* # of cmds that can be\
                                           outstanding at any time */\
    7,                                  /* HBA Target ID             */\
    MAX_SGLIST,                         /* Scatter/Gather Table Size */\
    MAX_CMD_PER_LUN,                    /* 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:        MAX_COMMANDS,            /* Can Queue                 */\
    this_id:          7,                       /* HBA Target ID             */\
    sg_tablesize:     MAX_SGLIST,              /* Scatter/Gather Table Size */\
    cmd_per_lun:      MAX_CMD_PER_LUN,         /* SCSI Commands per LUN     */\
    present:          0,                       /* Present                   */\
    unchecked_isa_dma:0,                       /* Default Unchecked ISA DMA */\
    use_clustering:   ENABLE_CLUSTERING        /* Enable Clustering         */\
  }
#endif


/***********************************************************************
 * Structure Declarations for the Firmware supporting 40 Logical Drives
 * and 256 Physical Drives.
 ***********************************************************************/

#define FC_MAX_LOGICAL_DRIVES       40
#define FC_MAX_LOG_DEVICES          FC_MAX_LOGICAL_DRIVES
#define FC_MAX_SPAN_DEPTH           8
#define FC_MAX_ROW_SIZE             32

#define FC_MAX_CHANNELS             16
#define FC_MAX_TARGETS_PER_CHANNEL  16
#define FC_MAX_PHYSICAL_DEVICES     256

#define FC_NEW_CONFIG               0xA1
#define DCMD_FC_CMD                 0xA1
  #define NC_SUBOP_PRODUCT_INFO       0x0E
  #define NC_SUBOP_ENQUIRY3           0x0F
	#define ENQ3_GET_SOLICITED_NOTIFY_ONLY  0x01
	#define ENQ3_GET_SOLICITED_FULL         0x02
	#define ENQ3_GET_UNSOLICITED            0x03


/********************************************
 * PRODUCT_INFO Strucure
 ********************************************/

#define SIG_40LOG_32STR_8SPN  0x00282008

/* 
 * Utilities declare this strcture size as 1024 bytes. So more fields can
 * be added in future.
 */

struct MRaidProductInfo
{
   u32   DataSize; /* current size in bytes (not including resvd) */
   u32   ConfigSignature;
                         /* Current value is 0x00282008
                          * 0x28=MAX_LOGICAL_DRIVES, 
                          * 0x20=Number of stripes and 
                          * 0x08=Number of spans */
   u8   FwVer[16];         /* printable ASCI string */
   u8   BiosVer[16];       /* printable ASCI string */
   u8   ProductName[80];   /* printable ASCI string */

   u8   MaxConcCmds;       /* Max. concurrent commands supported */
   u8   SCSIChanPresent;   /* Number of SCSI Channels detected */
   u8   FCLoopPresent;     /* Number of Fibre Loops detected */
   u8   memType;           /* EDO, FPM, SDRAM etc */

   u32   signature;
   u16  DramSize;          /* In terms of MB */
   u16  subSystemID;

   u16  subSystemVendorID;
   u8   numNotifyCounters;
   u8   pad1k[889];       /* 135 + 889 resvd = 1024 total size */
}__attribute__((packed));
typedef struct MRaidProductInfo megaRaidProductInfo;

/********************************************
 * Standard ENQUIRY Strucure
 ********************************************/
struct FC_ADP_INFO
{
   u8  MaxConcCmds;         /* Max. concurrent commands supported. */
   u8  RbldRate;            /* Rebuild Rate. Varies from 0%-100% */
   u8  MaxTargPerChan;      /* Max. Targets supported per chan. */
   u8  ChanPresent;         /* No. of Chans present on this adapter. */
   u8  FwVer[4];            /* Firmware version. */
   u16 AgeOfFlash;          /* No. of times FW has been downloaded. */
   u8  ChipSetValue;        /* Contents of 0xC0000832 */
   u8  DramSize;            /* In terms of MB */
   u8  CacheFlushInterval;  /* In terms of Seconds */
   u8  BiosVersion[4];
   u8  BoardType;
   u8  sense_alert;
   u8  write_config_count;   /* Increase with evry configuration change */
   u8  drive_inserted_count; /* Increase with every drive inserted */
   u8  inserted_drive;       /* Channel: Id of inserted drive */
   u8  battery_status;
                           /*
                              BIT 0 : battery module missing
                              BIT 1 : VBAD
                              BIT 2 : temp high
                              BIT 3 : battery pack missing
                              BIT 4,5 : 00 - charge complete
                                        01 - fast charge in prog
                                        10 - fast charge fail
                                        11 - undefined
                              BIt 6 : counter > 1000
                              Bit 7 : undefined
                           */
   u8  dec_fault_bus_info;   /* was resvd */
}__attribute__((packed));

struct FC_LDRV_INFO
{
   u8  NumLDrv;      /* No. of Log. Drvs configured. */
   u8  recon_state[FC_MAX_LOGICAL_DRIVES/8];    
                                /* bit field for State of reconstruct */
   u16 LDrvOpStatus[FC_MAX_LOGICAL_DRIVES/8];   
                                /* bit field Status of Long Operations. */

   u32  LDrvSize[FC_MAX_LOGICAL_DRIVES];   /* Size of each log. Drv. */
   u8  LDrvProp[FC_MAX_LOGICAL_DRIVES];
   u8  LDrvState[FC_MAX_LOGICAL_DRIVES];  /* State of Logical Drives. */
}__attribute__((packed));

#define PREVSTAT_MASK   0xf0
#define CURRSTAT_MASK   0x0f

struct FC_PDRV_INFO
{
   u8 PDrvState[FC_MAX_PHYSICAL_DEVICES]; /* State of Phys Drvs. */
}__attribute__((packed));


struct FC_AdapterInq
{
   struct FC_ADP_INFO    AdpInfo;
   struct FC_LDRV_INFO   LogdrvInfo;
   struct FC_PDRV_INFO   PhysdrvInfo;
}__attribute__((packed));


typedef struct FC_AdapterInq  mega_RAIDINQ_FC;

/********************************************
 * NOTIFICATION Strucure
 ********************************************/

#define MAX_NOTIFY_SIZE     0x80
#define CUR_NOTIFY_SIZE     sizeof(struct MegaRAID_Notify)

/* 
 * Utilities declare this strcture size as ?? bytes. So more fields can
 * be added in future.
 */
struct MegaRAID_Notify
{
    u32   globalCounter;  /* Any change increments this counter */

    u8   paramCounter;   /* Indicates any params changed  */
    u8   paramId;        /* Param modified - defined below */
    u16  paramVal;       /* New val of last param modified */

    u8   writeConfigCounter; /* write config occurred */
    u8   writeConfigRsvd[3];

    u8   ldrvOpCounter;  /* Indicates ldrv op started/completed */
    u8   ldrvOpId;       /* ldrv num */
    u8   ldrvOpCmd;      /* ldrv operation - defined below */
    u8   ldrvOpStatus;   /* status of the operation */

    u8   ldrvStateCounter;   /* Indicates change of ldrv state */
    u8   ldrvStateId;    /* ldrv num */
    u8   ldrvStateNew;   /* New state */