aic7xxx_old.c

Linux Kernel 2.6.9 for OMAP1710

  {DEFAULT_TAG_COMMANDS},
  {DEFAULT_TAG_COMMANDS},
  {DEFAULT_TAG_COMMANDS}
};


/*
 * Define an array of board names that can be indexed by aha_type.
 * Don't forget to change this when changing the types!
 */
static const char *board_names[] = {
  "AIC-7xxx Unknown",                                   /* AIC_NONE */
  "Adaptec AIC-7810 Hardware RAID Controller",          /* AIC_7810 */
  "Adaptec AIC-7770 SCSI host adapter",                 /* AIC_7770 */
  "Adaptec AHA-274X SCSI host adapter",                 /* AIC_7771 */
  "Adaptec AHA-284X SCSI host adapter",                 /* AIC_284x */
  "Adaptec AIC-7850 SCSI host adapter",                 /* AIC_7850 */
  "Adaptec AIC-7855 SCSI host adapter",                 /* AIC_7855 */
  "Adaptec AIC-7860 Ultra SCSI host adapter",           /* AIC_7860 */
  "Adaptec AHA-2940A Ultra SCSI host adapter",          /* AIC_7861 */
  "Adaptec AIC-7870 SCSI host adapter",                 /* AIC_7870 */
  "Adaptec AHA-294X SCSI host adapter",                 /* AIC_7871 */
  "Adaptec AHA-394X SCSI host adapter",                 /* AIC_7872 */
  "Adaptec AHA-398X SCSI host adapter",                 /* AIC_7873 */
  "Adaptec AHA-2944 SCSI host adapter",                 /* AIC_7874 */
  "Adaptec AIC-7880 Ultra SCSI host adapter",           /* AIC_7880 */
  "Adaptec AHA-294X Ultra SCSI host adapter",           /* AIC_7881 */
  "Adaptec AHA-394X Ultra SCSI host adapter",           /* AIC_7882 */
  "Adaptec AHA-398X Ultra SCSI host adapter",           /* AIC_7883 */
  "Adaptec AHA-2944 Ultra SCSI host adapter",           /* AIC_7884 */
  "Adaptec AHA-2940UW Pro Ultra SCSI host adapter",     /* AIC_7887 */
  "Adaptec AIC-7895 Ultra SCSI host adapter",           /* AIC_7895 */
  "Adaptec AIC-7890/1 Ultra2 SCSI host adapter",        /* AIC_7890 */
  "Adaptec AHA-293X Ultra2 SCSI host adapter",          /* AIC_7890 */
  "Adaptec AHA-294X Ultra2 SCSI host adapter",          /* AIC_7890 */
  "Adaptec AIC-7896/7 Ultra2 SCSI host adapter",        /* AIC_7896 */
  "Adaptec AHA-394X Ultra2 SCSI host adapter",          /* AIC_7897 */
  "Adaptec AHA-395X Ultra2 SCSI host adapter",          /* AIC_7897 */
  "Adaptec PCMCIA SCSI controller",                     /* card bus stuff */
  "Adaptec AIC-7892 Ultra 160/m SCSI host adapter",     /* AIC_7892 */
  "Adaptec AIC-7899 Ultra 160/m SCSI host adapter",     /* AIC_7899 */
};

/*
 * There should be a specific return value for this in scsi.h, but
 * it seems that most drivers ignore it.
 */
#define DID_UNDERFLOW   DID_ERROR

/*
 *  What we want to do is have the higher level scsi driver requeue
 *  the command to us. There is no specific driver status for this
 *  condition, but the higher level scsi driver will requeue the
 *  command on a DID_BUS_BUSY error.
 *
 *  Upon further inspection and testing, it seems that DID_BUS_BUSY
 *  will *always* retry the command.  We can get into an infinite loop
 *  if this happens when we really want some sort of counter that
 *  will automatically abort/reset the command after so many retries.
 *  Using DID_ERROR will do just that.  (Made by a suggestion by
 *  Doug Ledford 8/1/96)
 */
#define DID_RETRY_COMMAND DID_ERROR

#define HSCSIID        0x07
#define SCSI_RESET     0x040

/*
 * EISA/VL-bus stuff
 */
#define MINSLOT                1
#define MAXSLOT                15
#define SLOTBASE(x)        ((x) << 12)
#define BASE_TO_SLOT(x) ((x) >> 12)

/*
 * Standard EISA Host ID regs  (Offset from slot base)
 */
#define AHC_HID0              0x80   /* 0,1: msb of ID2, 2-7: ID1      */
#define AHC_HID1              0x81   /* 0-4: ID3, 5-7: LSB ID2         */
#define AHC_HID2              0x82   /* product                        */
#define AHC_HID3              0x83   /* firmware revision              */

/*
 * AIC-7770 I/O range to reserve for a card
 */
#define MINREG                0xC00
#define MAXREG                0xCFF

#define INTDEF                0x5C      /* Interrupt Definition Register */

/*
 * AIC-78X0 PCI registers
 */
#define        CLASS_PROGIF_REVID        0x08
#define                DEVREVID        0x000000FFul
#define                PROGINFC        0x0000FF00ul
#define                SUBCLASS        0x00FF0000ul
#define                BASECLASS        0xFF000000ul

#define        CSIZE_LATTIME                0x0C
#define                CACHESIZE        0x0000003Ful        /* only 5 bits */
#define                LATTIME                0x0000FF00ul

#define        DEVCONFIG                0x40
#define                SCBSIZE32        0x00010000ul        /* aic789X only */
#define                MPORTMODE        0x00000400ul        /* aic7870 only */
#define                RAMPSM           0x00000200ul        /* aic7870 only */
#define                RAMPSM_ULTRA2    0x00000004
#define                VOLSENSE         0x00000100ul
#define                SCBRAMSEL        0x00000080ul
#define                SCBRAMSEL_ULTRA2 0x00000008
#define                MRDCEN           0x00000040ul
#define                EXTSCBTIME       0x00000020ul        /* aic7870 only */
#define                EXTSCBPEN        0x00000010ul        /* aic7870 only */
#define                BERREN           0x00000008ul
#define                DACEN            0x00000004ul
#define                STPWLEVEL        0x00000002ul
#define                DIFACTNEGEN      0x00000001ul        /* aic7870 only */

#define        SCAMCTL                  0x1a                /* Ultra2 only  */
#define        CCSCBBADDR               0xf0                /* aic7895/6/7  */

/*
 * Define the different types of SEEPROMs on aic7xxx adapters
 * and make it also represent the address size used in accessing
 * its registers.  The 93C46 chips have 1024 bits organized into
 * 64 16-bit words, while the 93C56 chips have 2048 bits organized
 * into 128 16-bit words.  The C46 chips use 6 bits to address
 * each word, while the C56 and C66 (4096 bits) use 8 bits to
 * address each word.
 */
typedef enum {C46 = 6, C56_66 = 8} seeprom_chip_type;

/*
 *
 * Define the format of the SEEPROM registers (16 bits).
 *
 */
struct seeprom_config {

/*
 * SCSI ID Configuration Flags
 */
#define CFXFER                0x0007      /* synchronous transfer rate */
#define CFSYNCH               0x0008      /* enable synchronous transfer */
#define CFDISC                0x0010      /* enable disconnection */
#define CFWIDEB               0x0020      /* wide bus device (wide card) */
#define CFSYNCHISULTRA        0x0040      /* CFSYNC is an ultra offset */
#define CFNEWULTRAFORMAT      0x0080      /* Use the Ultra2 SEEPROM format */
#define CFSTART               0x0100      /* send start unit SCSI command */
#define CFINCBIOS             0x0200      /* include in BIOS scan */
#define CFRNFOUND             0x0400      /* report even if not found */
#define CFMULTILUN            0x0800      /* probe mult luns in BIOS scan */
#define CFWBCACHEYES          0x4000      /* Enable W-Behind Cache on drive */
#define CFWBCACHENC           0xc000      /* Don't change W-Behind Cache */
/* UNUSED                0x3000 */
  unsigned short device_flags[16];        /* words 0-15 */

/*
 * BIOS Control Bits
 */
#define CFSUPREM        0x0001  /* support all removable drives */
#define CFSUPREMB       0x0002  /* support removable drives for boot only */
#define CFBIOSEN        0x0004  /* BIOS enabled */
/* UNUSED                0x0008 */
#define CFSM2DRV        0x0010  /* support more than two drives */
#define CF284XEXTEND    0x0020  /* extended translation (284x cards) */
/* UNUSED                0x0040 */
#define CFEXTEND        0x0080  /* extended translation enabled */
/* UNUSED                0xFF00 */
  unsigned short bios_control;  /* word 16 */

/*
 * Host Adapter Control Bits
 */
#define CFAUTOTERM      0x0001  /* Perform Auto termination */
#define CFULTRAEN       0x0002  /* Ultra SCSI speed enable (Ultra cards) */
#define CF284XSELTO     0x0003  /* Selection timeout (284x cards) */
#define CF284XFIFO      0x000C  /* FIFO Threshold (284x cards) */
#define CFSTERM         0x0004  /* SCSI low byte termination */
#define CFWSTERM        0x0008  /* SCSI high byte termination (wide card) */
#define CFSPARITY       0x0010  /* SCSI parity */
#define CF284XSTERM     0x0020  /* SCSI low byte termination (284x cards) */
#define CFRESETB        0x0040  /* reset SCSI bus at boot */
#define CFBPRIMARY      0x0100  /* Channel B primary on 7895 chipsets */
#define CFSEAUTOTERM    0x0400  /* aic7890 Perform SE Auto Term */
#define CFLVDSTERM      0x0800  /* aic7890 LVD Termination */
/* UNUSED                0xF280 */
  unsigned short adapter_control;        /* word 17 */

/*
 * Bus Release, Host Adapter ID
 */
#define CFSCSIID        0x000F                /* host adapter SCSI ID */
/* UNUSED                0x00F0 */
#define CFBRTIME        0xFF00                /* bus release time */
  unsigned short brtime_id;                /* word 18 */

/*
 * Maximum targets
 */
#define CFMAXTARG        0x00FF        /* maximum targets */
/* UNUSED                0xFF00 */
  unsigned short max_targets;                /* word 19 */

  unsigned short res_1[11];                /* words 20-30 */
  unsigned short checksum;                /* word 31 */
};

#define SELBUS_MASK                0x0a
#define         SELNARROW        0x00
#define         SELBUSB                0x08
#define SINGLE_BUS                0x00

#define SCB_TARGET(scb)         \
       (((scb)->hscb->target_channel_lun & TID) >> 4)
#define SCB_LUN(scb)            \
       ((scb)->hscb->target_channel_lun & LID)
#define SCB_IS_SCSIBUS_B(scb)   \
       (((scb)->hscb->target_channel_lun & SELBUSB) != 0)

/*
 * If an error occurs during a data transfer phase, run the command
 * to completion - it's easier that way - making a note of the error
 * condition in this location. This then will modify a DID_OK status
 * into an appropriate error for the higher-level SCSI code.
 */
#define aic7xxx_error(cmd)        ((cmd)->SCp.Status)

/*
 * Keep track of the targets returned status.
 */
#define aic7xxx_status(cmd)        ((cmd)->SCp.sent_command)

/*
 * The position of the SCSI commands scb within the scb array.
 */
#define aic7xxx_position(cmd)        ((cmd)->SCp.have_data_in)

/*
 * The stored DMA mapping for single-buffer data transfers.
 */
#define aic7xxx_mapping(cmd)	     ((cmd)->SCp.phase)

/*
 * Get out private data area from a scsi cmd pointer
 */
#define AIC_DEV(cmd)	((struct aic_dev_data *)(cmd)->device->hostdata)

/*
 * So we can keep track of our host structs
 */
static struct aic7xxx_host *first_aic7xxx = NULL;

/*
 * As of Linux 2.1, the mid-level SCSI code uses virtual addresses
 * in the scatter-gather lists.  We need to convert the virtual
 * addresses to physical addresses.
 */
struct hw_scatterlist {
  unsigned int address;
  unsigned int length;
};

/*
 * Maximum number of SG segments these cards can support.
 */
#define        AIC7XXX_MAX_SG 128

/*
 * The maximum number of SCBs we could have for ANY type
 * of card. DON'T FORGET TO CHANGE THE SCB MASK IN THE
 * SEQUENCER CODE IF THIS IS MODIFIED!
 */
#define AIC7XXX_MAXSCB        255


struct aic7xxx_hwscb {
/* ------------    Begin hardware supported fields    ---------------- */
/* 0*/  unsigned char control;
/* 1*/  unsigned char target_channel_lun;       /* 4/1/3 bits */
/* 2*/  unsigned char target_status;
/* 3*/  unsigned char SG_segment_count;
/* 4*/  unsigned int  SG_list_pointer;
/* 8*/  unsigned char residual_SG_segment_count;
/* 9*/  unsigned char residual_data_count[3];
/*12*/  unsigned int  data_pointer;
/*16*/  unsigned int  data_count;
/*20*/  unsigned int  SCSI_cmd_pointer;
/*24*/  unsigned char SCSI_cmd_length;
/*25*/  unsigned char tag;          /* Index into our kernel SCB array.
                                     * Also used as the tag for tagged I/O
                                     */
#define SCB_PIO_TRANSFER_SIZE  26   /* amount we need to upload/download
                                     * via PIO to initialize a transaction.
                                     */
/*26*/  unsigned char next;         /* Used to thread SCBs awaiting selection
                                     * or disconnected down in the sequencer.
                                     */
/*27*/  unsigned char prev;
/*28*/  unsigned int pad;           /*
                                     * Unused by the kernel, but we require
                                     * the padding so that the array of
                                     * hardware SCBs is aligned on 32 byte
                                     * boundaries so the sequencer can index
                                     */
};

typedef enum {
        SCB_FREE                = 0x0000,
        SCB_DTR_SCB             = 0x0001,
        SCB_WAITINGQ            = 0x0002,
        SCB_ACTIVE              = 0x0004,
        SCB_SENSE               = 0x0008,
        SCB_ABORT               = 0x0010,
        SCB_DEVICE_RESET        = 0x0020,
        SCB_RESET               = 0x0040,
        SCB_RECOVERY_SCB        = 0x0080,
        SCB_MSGOUT_PPR          = 0x0100,
        SCB_MSGOUT_SENT         = 0x0200,
        SCB_MSGOUT_SDTR         = 0x0400,
        SCB_MSGOUT_WDTR         = 0x0800,
        SCB_MSGOUT_BITS         = SCB_MSGOUT_PPR |
                                  SCB_MSGOUT_SENT | 
                                  SCB_MSGOUT_SDTR |
                                  SCB_MSGOUT_WDTR,
        SCB_QUEUED_ABORT        = 0x1000,
        SCB_QUEUED_FOR_DONE     = 0x2000,
        SCB_WAS_BUSY            = 0x4000,
	SCB_QUEUE_FULL		= 0x8000
} scb_flag_type;

typedef enum {
        AHC_FNONE                 = 0x00000000,
        AHC_PAGESCBS              = 0x00000001,
        AHC_CHANNEL_B_PRIMARY     = 0x00000002,
        AHC_USEDEFAULTS           = 0x00000004,
        AHC_INDIRECT_PAGING       = 0x00000008,
        AHC_CHNLB                 = 0x00000020,
        AHC_CHNLC                 = 0x00000040,
        AHC_EXTEND_TRANS_A        = 0x00000100,
        AHC_EXTEND_TRANS_B        = 0x00000200,