Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1079 insertions, 0 deletions

diff --git a/drivers/scsi/gdth.h b/drivers/scsi/gdth.h
new file mode 100644
index 0000000..bf269f0
--- /dev/null
+++ b/drivers/scsi/gdth.h
@@ -0,0 +1,1079 @@
+#ifndef _GDTH_H
+#define _GDTH_H
+
+/*
+ * Header file for the GDT Disk Array/Storage RAID controllers driver for Linux
+ * 
+ * gdth.h Copyright (C) 1995-03 ICP vortex, Achim Leubner
+ * See gdth.c for further informations and 
+ * below for supported controller types
+ *
+ * <achim_leubner@adaptec.com>
+ *
+ * $Id: gdth.h,v 1.57 2004/03/31 11:52:09 achim Exp $
+ */
+
+#include <linux/version.h>
+#include <linux/types.h>
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+/* defines, macros */
+
+/* driver version */
+#define GDTH_VERSION_STR        "3.04"
+#define GDTH_VERSION            3
+#define GDTH_SUBVERSION         4
+
+/* protocol version */
+#define PROTOCOL_VERSION        1
+
+/* OEM IDs */
+#define OEM_ID_ICP      0x941c
+#define OEM_ID_INTEL    0x8000
+
+/* controller classes */
+#define GDT_ISA         0x01                    /* ISA controller */
+#define GDT_EISA        0x02                    /* EISA controller */
+#define GDT_PCI         0x03                    /* PCI controller */
+#define GDT_PCINEW      0x04                    /* new PCI controller */
+#define GDT_PCIMPR      0x05                    /* PCI MPR controller */
+/* GDT_EISA, controller subtypes EISA */
+#define GDT3_ID         0x0130941c              /* GDT3000/3020 */
+#define GDT3A_ID        0x0230941c              /* GDT3000A/3020A/3050A */
+#define GDT3B_ID        0x0330941c              /* GDT3000B/3010A */
+/* GDT_ISA */
+#define GDT2_ID         0x0120941c              /* GDT2000/2020 */
+
+/* vendor ID, device IDs (PCI) */
+/* these defines should already exist in <linux/pci.h> */
+#ifndef PCI_VENDOR_ID_VORTEX
+#define PCI_VENDOR_ID_VORTEX            0x1119  /* PCI controller vendor ID */
+#endif
+#ifndef PCI_VENDOR_ID_INTEL
+#define PCI_VENDOR_ID_INTEL             0x8086  
+#endif
+
+#ifndef PCI_DEVICE_ID_VORTEX_GDT60x0
+/* GDT_PCI */
+#define PCI_DEVICE_ID_VORTEX_GDT60x0    0       /* GDT6000/6020/6050 */
+#define PCI_DEVICE_ID_VORTEX_GDT6000B   1       /* GDT6000B/6010 */
+/* GDT_PCINEW */
+#define PCI_DEVICE_ID_VORTEX_GDT6x10    2       /* GDT6110/6510 */
+#define PCI_DEVICE_ID_VORTEX_GDT6x20    3       /* GDT6120/6520 */
+#define PCI_DEVICE_ID_VORTEX_GDT6530    4       /* GDT6530 */
+#define PCI_DEVICE_ID_VORTEX_GDT6550    5       /* GDT6550 */
+/* GDT_PCINEW, wide/ultra SCSI controllers */
+#define PCI_DEVICE_ID_VORTEX_GDT6x17    6       /* GDT6117/6517 */
+#define PCI_DEVICE_ID_VORTEX_GDT6x27    7       /* GDT6127/6527 */
+#define PCI_DEVICE_ID_VORTEX_GDT6537    8       /* GDT6537 */
+#define PCI_DEVICE_ID_VORTEX_GDT6557    9       /* GDT6557/6557-ECC */
+/* GDT_PCINEW, wide SCSI controllers */
+#define PCI_DEVICE_ID_VORTEX_GDT6x15    10      /* GDT6115/6515 */
+#define PCI_DEVICE_ID_VORTEX_GDT6x25    11      /* GDT6125/6525 */
+#define PCI_DEVICE_ID_VORTEX_GDT6535    12      /* GDT6535 */
+#define PCI_DEVICE_ID_VORTEX_GDT6555    13      /* GDT6555/6555-ECC */
+#endif
+
+#ifndef PCI_DEVICE_ID_VORTEX_GDT6x17RP
+/* GDT_MPR, RP series, wide/ultra SCSI */
+#define PCI_DEVICE_ID_VORTEX_GDT6x17RP  0x100   /* GDT6117RP/GDT6517RP */
+#define PCI_DEVICE_ID_VORTEX_GDT6x27RP  0x101   /* GDT6127RP/GDT6527RP */
+#define PCI_DEVICE_ID_VORTEX_GDT6537RP  0x102   /* GDT6537RP */
+#define PCI_DEVICE_ID_VORTEX_GDT6557RP  0x103   /* GDT6557RP */
+/* GDT_MPR, RP series, narrow/ultra SCSI */
+#define PCI_DEVICE_ID_VORTEX_GDT6x11RP  0x104   /* GDT6111RP/GDT6511RP */
+#define PCI_DEVICE_ID_VORTEX_GDT6x21RP  0x105   /* GDT6121RP/GDT6521RP */
+#endif
+#ifndef PCI_DEVICE_ID_VORTEX_GDT6x17RD
+/* GDT_MPR, RD series, wide/ultra SCSI */
+#define PCI_DEVICE_ID_VORTEX_GDT6x17RD  0x110   /* GDT6117RD/GDT6517RD */
+#define PCI_DEVICE_ID_VORTEX_GDT6x27RD  0x111   /* GDT6127RD/GDT6527RD */
+#define PCI_DEVICE_ID_VORTEX_GDT6537RD  0x112   /* GDT6537RD */
+#define PCI_DEVICE_ID_VORTEX_GDT6557RD  0x113   /* GDT6557RD */
+/* GDT_MPR, RD series, narrow/ultra SCSI */
+#define PCI_DEVICE_ID_VORTEX_GDT6x11RD  0x114   /* GDT6111RD/GDT6511RD */
+#define PCI_DEVICE_ID_VORTEX_GDT6x21RD  0x115   /* GDT6121RD/GDT6521RD */
+/* GDT_MPR, RD series, wide/ultra2 SCSI */
+#define PCI_DEVICE_ID_VORTEX_GDT6x18RD  0x118   /* GDT6118RD/GDT6518RD/
+                                                   GDT6618RD */
+#define PCI_DEVICE_ID_VORTEX_GDT6x28RD  0x119   /* GDT6128RD/GDT6528RD/
+                                                   GDT6628RD */
+#define PCI_DEVICE_ID_VORTEX_GDT6x38RD  0x11A   /* GDT6538RD/GDT6638RD */
+#define PCI_DEVICE_ID_VORTEX_GDT6x58RD  0x11B   /* GDT6558RD/GDT6658RD */
+/* GDT_MPR, RN series (64-bit PCI), wide/ultra2 SCSI */
+#define PCI_DEVICE_ID_VORTEX_GDT7x18RN  0x168   /* GDT7118RN/GDT7518RN/
+                                                   GDT7618RN */
+#define PCI_DEVICE_ID_VORTEX_GDT7x28RN  0x169   /* GDT7128RN/GDT7528RN/
+                                                   GDT7628RN */
+#define PCI_DEVICE_ID_VORTEX_GDT7x38RN  0x16A   /* GDT7538RN/GDT7638RN */
+#define PCI_DEVICE_ID_VORTEX_GDT7x58RN  0x16B   /* GDT7558RN/GDT7658RN */
+#endif
+
+#ifndef PCI_DEVICE_ID_VORTEX_GDT6x19RD
+/* GDT_MPR, RD series, Fibre Channel */
+#define PCI_DEVICE_ID_VORTEX_GDT6x19RD  0x210   /* GDT6519RD/GDT6619RD */
+#define PCI_DEVICE_ID_VORTEX_GDT6x29RD  0x211   /* GDT6529RD/GDT6629RD */
+/* GDT_MPR, RN series (64-bit PCI), Fibre Channel */
+#define PCI_DEVICE_ID_VORTEX_GDT7x19RN  0x260   /* GDT7519RN/GDT7619RN */
+#define PCI_DEVICE_ID_VORTEX_GDT7x29RN  0x261   /* GDT7529RN/GDT7629RN */
+#endif
+
+#ifndef PCI_DEVICE_ID_VORTEX_GDTMAXRP
+/* GDT_MPR, last device ID */
+#define PCI_DEVICE_ID_VORTEX_GDTMAXRP   0x2ff   
+#endif
+
+#ifndef PCI_DEVICE_ID_VORTEX_GDTNEWRX
+/* new GDT Rx Controller */
+#define PCI_DEVICE_ID_VORTEX_GDTNEWRX   0x300
+#endif
+
+#ifndef PCI_DEVICE_ID_VORTEX_GDTNEWRX2
+/* new(2) GDT Rx Controller */
+#define PCI_DEVICE_ID_VORTEX_GDTNEWRX2  0x301
+#endif        
+
+#ifndef PCI_DEVICE_ID_INTEL_SRC
+/* Intel Storage RAID Controller */
+#define PCI_DEVICE_ID_INTEL_SRC         0x600
+#endif
+
+#ifndef PCI_DEVICE_ID_INTEL_SRC_XSCALE
+/* Intel Storage RAID Controller */
+#define PCI_DEVICE_ID_INTEL_SRC_XSCALE  0x601
+#endif
+
+/* limits */
+#define GDTH_SCRATCH    PAGE_SIZE               /* 4KB scratch buffer */
+#define GDTH_MAXCMDS    120
+#define GDTH_MAXC_P_L   16                      /* max. cmds per lun */
+#define GDTH_MAX_RAW    2                       /* max. cmds per raw device */
+#define MAXOFFSETS      128
+#define MAXHA           16
+#define MAXID           127
+#define MAXLUN          8
+#define MAXBUS          6
+#define MAX_EVENTS      100                     /* event buffer count */
+#define MAX_RES_ARGS    40                      /* device reservation, 
+                                                   must be a multiple of 4 */
+#define MAXCYLS         1024
+#define HEADS           64
+#define SECS            32                      /* mapping 64*32 */
+#define MEDHEADS        127
+#define MEDSECS         63                      /* mapping 127*63 */
+#define BIGHEADS        255
+#define BIGSECS         63                      /* mapping 255*63 */
+
+/* special command ptr. */
+#define UNUSED_CMND     ((Scsi_Cmnd *)-1)
+#define INTERNAL_CMND   ((Scsi_Cmnd *)-2)
+#define SCREEN_CMND     ((Scsi_Cmnd *)-3)
+#define SPECIAL_SCP(p)  (p==UNUSED_CMND || p==INTERNAL_CMND || p==SCREEN_CMND)
+
+/* controller services */
+#define SCSIRAWSERVICE  3
+#define CACHESERVICE    9
+#define SCREENSERVICE   11
+
+/* screenservice defines */
+#define MSG_INV_HANDLE  -1                      /* special message handle */
+#define MSGLEN          16                      /* size of message text */
+#define MSG_SIZE        34                      /* size of message structure */
+#define MSG_REQUEST     0                       /* async. event: message */
+
+/* cacheservice defines */
+#define SECTOR_SIZE     0x200                   /* always 512 bytes per sec. */
+
+/* DPMEM constants */
+#define DPMEM_MAGIC     0xC0FFEE11
+#define IC_HEADER_BYTES 48
+#define IC_QUEUE_BYTES  4
+#define DPMEM_COMMAND_OFFSET    IC_HEADER_BYTES+IC_QUEUE_BYTES*MAXOFFSETS
+
+/* cluster_type constants */
+#define CLUSTER_DRIVE         1
+#define CLUSTER_MOUNTED       2
+#define CLUSTER_RESERVED      4
+#define CLUSTER_RESERVE_STATE (CLUSTER_DRIVE|CLUSTER_MOUNTED|CLUSTER_RESERVED)
+
+/* commands for all services, cache service */
+#define GDT_INIT        0                       /* service initialization */
+#define GDT_READ        1                       /* read command */
+#define GDT_WRITE       2                       /* write command */
+#define GDT_INFO        3                       /* information about devices */
+#define GDT_FLUSH       4                       /* flush dirty cache buffers */
+#define GDT_IOCTL       5                       /* ioctl command */
+#define GDT_DEVTYPE     9                       /* additional information */
+#define GDT_MOUNT       10                      /* mount cache device */
+#define GDT_UNMOUNT     11                      /* unmount cache device */
+#define GDT_SET_FEAT    12                      /* set feat. (scatter/gather) */
+#define GDT_GET_FEAT    13                      /* get features */
+#define GDT_WRITE_THR   16                      /* write through */
+#define GDT_READ_THR    17                      /* read through */
+#define GDT_EXT_INFO    18                      /* extended info */
+#define GDT_RESET       19                      /* controller reset */
+#define GDT_RESERVE_DRV 20                      /* reserve host drive */
+#define GDT_RELEASE_DRV 21                      /* release host drive */
+#define GDT_CLUST_INFO  22                      /* cluster info */
+#define GDT_RW_ATTRIBS  23                      /* R/W attribs (write thru,..)*/
+#define GDT_CLUST_RESET 24                      /* releases the cluster drives*/
+#define GDT_FREEZE_IO   25                      /* freezes all IOs */
+#define GDT_UNFREEZE_IO 26                      /* unfreezes all IOs */
+#define GDT_X_INIT_HOST 29                      /* ext. init: 64 bit support */
+#define GDT_X_INFO      30                      /* ext. info for drives>2TB */
+
+/* raw service commands */
+#define GDT_RESERVE     14                      /* reserve dev. to raw serv. */
+#define GDT_RELEASE     15                      /* release device */
+#define GDT_RESERVE_ALL 16                      /* reserve all devices */
+#define GDT_RELEASE_ALL 17                      /* release all devices */
+#define GDT_RESET_BUS   18                      /* reset bus */
+#define GDT_SCAN_START  19                      /* start device scan */
+#define GDT_SCAN_END    20                      /* stop device scan */  
+#define GDT_X_INIT_RAW  21                      /* ext. init: 64 bit support */
+
+/* screen service commands */
+#define GDT_REALTIME    3                       /* realtime clock to screens. */
+#define GDT_X_INIT_SCR  4                       /* ext. init: 64 bit support */
+
+/* IOCTL command defines */
+#define SCSI_DR_INFO    0x00                    /* SCSI drive info */                   
+#define SCSI_CHAN_CNT   0x05                    /* SCSI channel count */   
+#define SCSI_DR_LIST    0x06                    /* SCSI drive list */
+#define SCSI_DEF_CNT    0x15                    /* grown/primary defects */
+#define DSK_STATISTICS  0x4b                    /* SCSI disk statistics */
+#define IOCHAN_DESC     0x5d                    /* description of IO channel */
+#define IOCHAN_RAW_DESC 0x5e                    /* description of raw IO chn. */
+#define L_CTRL_PATTERN  0x20000000L             /* SCSI IOCTL mask */
+#define ARRAY_INFO      0x12                    /* array drive info */
+#define ARRAY_DRV_LIST  0x0f                    /* array drive list */
+#define ARRAY_DRV_LIST2 0x34                    /* array drive list (new) */
+#define LA_CTRL_PATTERN 0x10000000L             /* array IOCTL mask */
+#define CACHE_DRV_CNT   0x01                    /* cache drive count */
+#define CACHE_DRV_LIST  0x02                    /* cache drive list */
+#define CACHE_INFO      0x04                    /* cache info */
+#define CACHE_CONFIG    0x05                    /* cache configuration */
+#define CACHE_DRV_INFO  0x07                    /* cache drive info */
+#define BOARD_FEATURES  0x15                    /* controller features */
+#define BOARD_INFO      0x28                    /* controller info */
+#define SET_PERF_MODES  0x82                    /* set mode (coalescing,..) */
+#define GET_PERF_MODES  0x83                    /* get mode */
+#define CACHE_READ_OEM_STRING_RECORD 0x84       /* read OEM string record */ 
+#define HOST_GET        0x10001L                /* get host drive list */
+#define IO_CHANNEL      0x00020000L             /* default IO channel */
+#define INVALID_CHANNEL 0x0000ffffL             /* invalid channel */
+
+/* service errors */
+#define S_OK            1                       /* no error */
+#define S_GENERR        6                       /* general error */
+#define S_BSY           7                       /* controller busy */
+#define S_CACHE_UNKNOWN 12                      /* cache serv.: drive unknown */
+#define S_RAW_SCSI      12                      /* raw serv.: target error */
+#define S_RAW_ILL       0xff                    /* raw serv.: illegal */
+#define S_NOFUNC        -2                      /* unknown function */
+#define S_CACHE_RESERV  -24                     /* cache: reserv. conflict */   
+
+/* timeout values */
+#define INIT_RETRIES    100000                  /* 100000 * 1ms = 100s */
+#define INIT_TIMEOUT    100000                  /* 100000 * 1ms = 100s */
+#define POLL_TIMEOUT    10000                   /* 10000 * 1ms = 10s */
+
+/* priorities */
+#define DEFAULT_PRI     0x20
+#define IOCTL_PRI       0x10
+#define HIGH_PRI        0x08
+
+/* data directions */
+#define GDTH_DATA_IN    0x01000000L             /* data from target */
+#define GDTH_DATA_OUT   0x00000000L             /* data to target */
+
+/* BMIC registers (EISA controllers) */
+#define ID0REG          0x0c80                  /* board ID */
+#define EINTENABREG     0x0c89                  /* interrupt enable */
+#define SEMA0REG        0x0c8a                  /* command semaphore */
+#define SEMA1REG        0x0c8b                  /* status semaphore */
+#define LDOORREG        0x0c8d                  /* local doorbell */
+#define EDENABREG       0x0c8e                  /* EISA system doorbell enab. */
+#define EDOORREG        0x0c8f                  /* EISA system doorbell */
+#define MAILBOXREG      0x0c90                  /* mailbox reg. (16 bytes) */
+#define EISAREG         0x0cc0                  /* EISA configuration */
+
+/* DMA memory mappings */
+#define GDTH_MAP_NONE   0
+#define GDTH_MAP_SINGLE 1
+#define GDTH_MAP_SG     2
+#define GDTH_MAP_IOCTL  3 
+
+/* other defines */
+#define LINUX_OS        8                       /* used for cache optim. */
+#define SCATTER_GATHER  1                       /* s/g feature */
+#define SECS32          0x1f                    /* round capacity */
+#define BIOS_ID_OFFS    0x10                    /* offset contr-ID in ISABIOS */
+#define LOCALBOARD      0                       /* board node always 0 */
+#define ASYNCINDEX      0                       /* cmd index async. event */
+#define SPEZINDEX       1                       /* cmd index unknown service */
+#define COALINDEX       (GDTH_MAXCMDS + 2)
+
+/* features */
+#define SCATTER_GATHER  1                       /* s/g feature */
+#define GDT_WR_THROUGH  0x100                   /* WRITE_THROUGH supported */
+#define GDT_64BIT       0x200                   /* 64bit / drv>2TB support */
+
+#include "gdth_ioctl.h"
+
+/* screenservice message */
+typedef struct {                               
+    ulong32     msg_handle;                     /* message handle */
+    ulong32     msg_len;                        /* size of message */
+    ulong32     msg_alen;                       /* answer length */
+    unchar      msg_answer;                     /* answer flag */
+    unchar      msg_ext;                        /* more messages */
+    unchar      msg_reserved[2];
+    char        msg_text[MSGLEN+2];             /* the message text */
+} PACKED gdth_msg_str;
+
+
+/* IOCTL data structures */
+
+/* Status coalescing buffer for returning multiple requests per interrupt */
+typedef struct {
+    ulong32     status;
+    ulong32     ext_status;
+    ulong32     info0;
+    ulong32     info1;
+} PACKED gdth_coal_status;
+
+/* performance mode data structure */
+typedef struct {
+    ulong32     version;            /* The version of this IOCTL structure. */
+    ulong32     st_mode;            /* 0=dis., 1=st_buf_addr1 valid, 2=both  */
+    ulong32     st_buff_addr1;      /* physical address of status buffer 1 */
+    ulong32     st_buff_u_addr1;    /* reserved for 64 bit addressing */
+    ulong32     st_buff_indx1;      /* reserved command idx. for this buffer */
+    ulong32     st_buff_addr2;      /* physical address of status buffer 1 */
+    ulong32     st_buff_u_addr2;    /* reserved for 64 bit addressing */
+    ulong32     st_buff_indx2;      /* reserved command idx. for this buffer */
+    ulong32     st_buff_size;       /* size of each buffer in bytes */
+    ulong32     cmd_mode;           /* 0 = mode disabled, 1 = cmd_buff_addr1 */ 
+    ulong32     cmd_buff_addr1;     /* physical address of cmd buffer 1 */   
+    ulong32     cmd_buff_u_addr1;   /* reserved for 64 bit addressing */
+    ulong32     cmd_buff_indx1;     /* cmd buf addr1 unique identifier */
+    ulong32     cmd_buff_addr2;     /* physical address of cmd buffer 1 */   
+    ulong32     cmd_buff_u_addr2;   /* reserved for 64 bit addressing */
+    ulong32     cmd_buff_indx2;     /* cmd buf addr1 unique identifier */
+    ulong32     cmd_buff_size;      /* size of each cmd bufer in bytes */
+    ulong32     reserved1;
+    ulong32     reserved2;
+} PACKED gdth_perf_modes;
+
+/* SCSI drive info */
+typedef struct {
+    unchar      vendor[8];                      /* vendor string */
+    unchar      product[16];                    /* product string */
+    unchar      revision[4];                    /* revision */
+    ulong32     sy_rate;                        /* current rate for sync. tr. */
+    ulong32     sy_max_rate;                    /* max. rate for sync. tr. */
+    ulong32     no_ldrive;                      /* belongs to this log. drv.*/
+    ulong32     blkcnt;                         /* number of blocks */
+    ushort      blksize;                        /* size of block in bytes */
+    unchar      available;                      /* flag: access is available */
+    unchar      init;                           /* medium is initialized */
+    unchar      devtype;                        /* SCSI devicetype */
+    unchar      rm_medium;                      /* medium is removable */
+    unchar      wp_medium;                      /* medium is write protected */
+    unchar      ansi;                           /* SCSI I/II or III? */
+    unchar      protocol;                       /* same as ansi */
+    unchar      sync;                           /* flag: sync. transfer enab. */
+    unchar      disc;                           /* flag: disconnect enabled */
+    unchar      queueing;                       /* flag: command queing enab. */
+    unchar      cached;                         /* flag: caching enabled */
+    unchar      target_id;                      /* target ID of device */
+    unchar      lun;                            /* LUN id of device */
+    unchar      orphan;                         /* flag: drive fragment */
+    ulong32     last_error;                     /* sense key or drive state */
+    ulong32     last_result;                    /* result of last command */
+    ulong32     check_errors;                   /* err. in last surface check */
+    unchar      percent;                        /* progress for surface check */
+    unchar      last_check;                     /* IOCTRL operation */
+    unchar      res[2];
+    ulong32     flags;                          /* from 1.19/2.19: raw reserv.*/
+    unchar      multi_bus;                      /* multi bus dev? (fibre ch.) */
+    unchar      mb_status;                      /* status: available? */
+    unchar      res2[2];
+    unchar      mb_alt_status;                  /* status on second bus */
+    unchar      mb_alt_bid;                     /* number of second bus */
+    unchar      mb_alt_tid;                     /* target id on second bus */
+    unchar      res3;
+    unchar      fc_flag;                        /* from 1.22/2.22: info valid?*/
+    unchar      res4;
+    ushort      fc_frame_size;                  /* frame size (bytes) */
+    char        wwn[8];                         /* world wide name */
+} PACKED gdth_diskinfo_str;
+
+/* get SCSI channel count  */
+typedef struct {
+    ulong32     channel_no;                     /* number of channel */
+    ulong32     drive_cnt;                      /* drive count */
+    unchar      siop_id;                        /* SCSI processor ID */
+    unchar      siop_state;                     /* SCSI processor state */ 
+} PACKED gdth_getch_str;
+
+/* get SCSI drive numbers */
+typedef struct {
+    ulong32     sc_no;                          /* SCSI channel */
+    ulong32     sc_cnt;                         /* sc_list[] elements */
+    ulong32     sc_list[MAXID];                 /* minor device numbers */
+} PACKED gdth_drlist_str;
+
+/* get grown/primary defect count */
+typedef struct {
+    unchar      sddc_type;                      /* 0x08: grown, 0x10: prim. */
+    unchar      sddc_format;                    /* list entry format */
+    unchar      sddc_len;                       /* list entry length */
+    unchar      sddc_res;
+    ulong32     sddc_cnt;                       /* entry count */
+} PACKED gdth_defcnt_str;
+
+/* disk statistics */
+typedef struct {
+    ulong32     bid;                            /* SCSI channel */
+    ulong32     first;                          /* first SCSI disk */
+    ulong32     entries;                        /* number of elements */
+    ulong32     count;                          /* (R) number of init. el. */
+    ulong32     mon_time;                       /* time stamp */
+    struct {
+        unchar  tid;                            /* target ID */
+        unchar  lun;                            /* LUN */
+        unchar  res[2];
+        ulong32 blk_size;                       /* block size in bytes */
+        ulong32 rd_count;                       /* bytes read */
+        ulong32 wr_count;                       /* bytes written */
+        ulong32 rd_blk_count;                   /* blocks read */
+        ulong32 wr_blk_count;                   /* blocks written */
+        ulong32 retries;                        /* retries */
+        ulong32 reassigns;                      /* reassigns */
+    } PACKED list[1];
+} PACKED gdth_dskstat_str;
+
+/* IO channel header */
+typedef struct {
+    ulong32     version;                        /* version (-1UL: newest) */
+    unchar      list_entries;                   /* list entry count */
+    unchar      first_chan;                     /* first channel number */
+    unchar      last_chan;                      /* last channel number */
+    unchar      chan_count;                     /* (R) channel count */
+    ulong32     list_offset;                    /* offset of list[0] */
+} PACKED gdth_iochan_header;
+
+/* get IO channel description */
+typedef struct {
+    gdth_iochan_header  hdr;
+    struct {
+        ulong32         address;                /* channel address */
+        unchar          type;                   /* type (SCSI, FCAL) */
+        unchar          local_no;               /* local number */
+        ushort          features;               /* channel features */
+    } PACKED list[MAXBUS];
+} PACKED gdth_iochan_str;
+
+/* get raw IO channel description */
+typedef struct {
+    gdth_iochan_header  hdr;
+    struct {
+        unchar      proc_id;                    /* processor id */
+        unchar      proc_defect;                /* defect ? */
+        unchar      reserved[2];
+    } PACKED list[MAXBUS];
+} PACKED gdth_raw_iochan_str;
+
+/* array drive component */
+typedef struct {
+    ulong32     al_controller;                  /* controller ID */
+    unchar      al_cache_drive;                 /* cache drive number */
+    unchar      al_status;                      /* cache drive state */
+    unchar      al_res[2];     
+} PACKED gdth_arraycomp_str;
+
+/* array drive information */
+typedef struct {
+    unchar      ai_type;                        /* array type (RAID0,4,5) */
+    unchar      ai_cache_drive_cnt;             /* active cachedrives */
+    unchar      ai_state;                       /* array drive state */
+    unchar      ai_master_cd;                   /* master cachedrive */
+    ulong32     ai_master_controller;           /* ID of master controller */
+    ulong32     ai_size;                        /* user capacity [sectors] */
+    ulong32     ai_striping_size;               /* striping size [sectors] */
+    ulong32     ai_secsize;                     /* sector size [bytes] */
+    ulong32     ai_err_info;                    /* failed cache drive */
+    unchar      ai_name[8];                     /* name of the array drive */
+    unchar      ai_controller_cnt;              /* number of controllers */
+    unchar      ai_removable;                   /* flag: removable */
+    unchar      ai_write_protected;             /* flag: write protected */
+    unchar      ai_devtype;                     /* type: always direct access */
+    gdth_arraycomp_str  ai_drives[35];          /* drive components: */
+    unchar      ai_drive_entries;               /* number of drive components */
+    unchar      ai_protected;                   /* protection flag */
+    unchar      ai_verify_state;                /* state of a parity verify */
+    unchar      ai_ext_state;                   /* extended array drive state */
+    unchar      ai_expand_state;                /* array expand state (>=2.18)*/
+    unchar      ai_reserved[3];
+} PACKED gdth_arrayinf_str;
+
+/* get array drive list */
+typedef struct {
+    ulong32     controller_no;                  /* controller no. */
+    unchar      cd_handle;                      /* master cachedrive */
+    unchar      is_arrayd;                      /* Flag: is array drive? */
+    unchar      is_master;                      /* Flag: is array master? */
+    unchar      is_parity;                      /* Flag: is parity drive? */
+    unchar      is_hotfix;                      /* Flag: is hotfix drive? */
+    unchar      res[3];
+} PACKED gdth_alist_str;
+
+typedef struct {
+    ulong32     entries_avail;                  /* allocated entries */
+    ulong32     entries_init;                   /* returned entries */
+    ulong32     first_entry;                    /* first entry number */
+    ulong32     list_offset;                    /* offset of following list */
+    gdth_alist_str list[1];                     /* list */
+} PACKED gdth_arcdl_str;
+
+/* cache info/config IOCTL */
+typedef struct {
+    ulong32     version;                        /* firmware version */
+    ushort      state;                          /* cache state (on/off) */
+    ushort      strategy;                       /* cache strategy */
+    ushort      write_back;                     /* write back state (on/off) */
+    ushort      block_size;                     /* cache block size */
+} PACKED gdth_cpar_str;
+
+typedef struct {
+    ulong32     csize;                          /* cache size */
+    ulong32     read_cnt;                       /* read/write counter */
+    ulong32     write_cnt;
+    ulong32     tr_hits;                        /* hits */
+    ulong32     sec_hits;
+    ulong32     sec_miss;                       /* misses */
+} PACKED gdth_cstat_str;
+
+typedef struct {
+    gdth_cpar_str   cpar;
+    gdth_cstat_str  cstat;
+} PACKED gdth_cinfo_str;
+
+/* cache drive info */
+typedef struct {
+    unchar      cd_name[8];                     /* cache drive name */
+    ulong32     cd_devtype;                     /* SCSI devicetype */
+    ulong32     cd_ldcnt;                       /* number of log. drives */
+    ulong32     cd_last_error;                  /* last error */
+    unchar      cd_initialized;                 /* drive is initialized */
+    unchar      cd_removable;                   /* media is removable */
+    unchar      cd_write_protected;             /* write protected */
+    unchar      cd_flags;                       /* Pool Hot Fix? */
+    ulong32     ld_blkcnt;                      /* number of blocks */
+    ulong32     ld_blksize;                     /* blocksize */
+    ulong32     ld_dcnt;                        /* number of disks */
+    ulong32     ld_slave;                       /* log. drive index */
+    ulong32     ld_dtype;                       /* type of logical drive */
+    ulong32     ld_last_error;                  /* last error */
+    unchar      ld_name[8];                     /* log. drive name */
+    unchar      ld_error;                       /* error */
+} PACKED gdth_cdrinfo_str;
+
+/* OEM string */
+typedef struct {
+    ulong32     ctl_version;
+    ulong32     file_major_version;
+    ulong32     file_minor_version;
+    ulong32     buffer_size;
+    ulong32     cpy_count;
+    ulong32     ext_error;
+    ulong32     oem_id;
+    ulong32     board_id;
+} PACKED gdth_oem_str_params;
+
+typedef struct {
+    unchar      product_0_1_name[16];
+    unchar      product_4_5_name[16];
+    unchar      product_cluster_name[16];
+    unchar      product_reserved[16];
+    unchar      scsi_cluster_target_vendor_id[16];
+    unchar      cluster_raid_fw_name[16];
+    unchar      oem_brand_name[16];
+    unchar      oem_raid_type[16];
+    unchar      bios_type[13];
+    unchar      bios_title[50];
+    unchar      oem_company_name[37];
+    ulong32     pci_id_1;
+    ulong32     pci_id_2;
+    unchar      validation_status[80];
+    unchar      reserved_1[4];
+    unchar      scsi_host_drive_inquiry_vendor_id[16];
+    unchar      library_file_template[16];
+    unchar      reserved_2[16];
+    unchar      tool_name_1[32];
+    unchar      tool_name_2[32];
+    unchar      tool_name_3[32];
+    unchar      oem_contact_1[84];
+    unchar      oem_contact_2[84];
+    unchar      oem_contact_3[84];
+} PACKED gdth_oem_str;
+
+typedef struct {
+    gdth_oem_str_params params;
+    gdth_oem_str        text;
+} PACKED gdth_oem_str_ioctl;
+
+/* board features */
+typedef struct {
+    unchar      chaining;                       /* Chaining supported */
+    unchar      striping;                       /* Striping (RAID-0) supp. */
+    unchar      mirroring;                      /* Mirroring (RAID-1) supp. */
+    unchar      raid;                           /* RAID-4/5/10 supported */
+} PACKED gdth_bfeat_str;
+
+/* board info IOCTL */
+typedef struct {
+    ulong32     ser_no;                         /* serial no. */
+    unchar      oem_id[2];                      /* OEM ID */
+    ushort      ep_flags;                       /* eprom flags */
+    ulong32     proc_id;                        /* processor ID */
+    ulong32     memsize;                        /* memory size (bytes) */
+    unchar      mem_banks;                      /* memory banks */
+    unchar      chan_type;                      /* channel type */
+    unchar      chan_count;                     /* channel count */
+    unchar      rdongle_pres;                   /* dongle present? */
+    ulong32     epr_fw_ver;                     /* (eprom) firmware version */
+    ulong32     upd_fw_ver;                     /* (update) firmware version */
+    ulong32     upd_revision;                   /* update revision */
+    char        type_string[16];                /* controller name */
+    char        raid_string[16];                /* RAID firmware name */
+    unchar      update_pres;                    /* update present? */
+    unchar      xor_pres;                       /* XOR engine present? */
+    unchar      prom_type;                      /* ROM type (eprom/flash) */
+    unchar      prom_count;                     /* number of ROM devices */
+    ulong32     dup_pres;                       /* duplexing module present? */
+    ulong32     chan_pres;                      /* number of expansion chn. */
+    ulong32     mem_pres;                       /* memory expansion inst. ? */
+    unchar      ft_bus_system;                  /* fault bus supported? */
+    unchar      subtype_valid;                  /* board_subtype valid? */
+    unchar      board_subtype;                  /* subtype/hardware level */
+    unchar      ramparity_pres;                 /* RAM parity check hardware? */
+} PACKED gdth_binfo_str; 
+
+/* get host drive info */
+typedef struct {
+    char        name[8];                        /* host drive name */
+    ulong32     size;                           /* size (sectors) */
+    unchar      host_drive;                     /* host drive number */
+    unchar      log_drive;                      /* log. drive (master) */
+    unchar      reserved;
+    unchar      rw_attribs;                     /* r/w attribs */
+    ulong32     start_sec;                      /* start sector */
+} PACKED gdth_hentry_str;
+
+typedef struct {
+    ulong32     entries;                        /* entry count */
+    ulong32     offset;                         /* offset of entries */
+    unchar      secs_p_head;                    /* sectors/head */
+    unchar      heads_p_cyl;                    /* heads/cylinder */
+    unchar      reserved;
+    unchar      clust_drvtype;                  /* cluster drive type */
+    ulong32     location;                       /* controller number */
+    gdth_hentry_str entry[MAX_HDRIVES];         /* entries */
+} PACKED gdth_hget_str;    
+
+
+/* DPRAM structures */
+
+/* interface area ISA/PCI */
+typedef struct {
+    unchar              S_Cmd_Indx;             /* special command */
+    unchar volatile     S_Status;               /* status special command */
+    ushort              reserved1;
+    ulong32             S_Info[4];              /* add. info special command */
+    unchar volatile     Sema0;                  /* command semaphore */
+    unchar              reserved2[3];
+    unchar              Cmd_Index;              /* command number */
+    unchar              reserved3[3];
+    ushort volatile     Status;                 /* command status */
+    ushort              Service;                /* service(for async.events) */
+    ulong32             Info[2];                /* additional info */
+    struct {
+        ushort          offset;                 /* command offs. in the DPRAM*/
+        ushort          serv_id;                /* service */
+    } PACKED comm_queue[MAXOFFSETS];            /* command queue */
+    ulong32             bios_reserved[2];
+    unchar              gdt_dpr_cmd[1];         /* commands */
+} PACKED gdt_dpr_if;
+
+/* SRAM structure PCI controllers */
+typedef struct {
+    ulong32     magic;                          /* controller ID from BIOS */
+    ushort      need_deinit;                    /* switch betw. BIOS/driver */
+    unchar      switch_support;                 /* see need_deinit */
+    unchar      padding[9];
+    unchar      os_used[16];                    /* OS code per service */
+    unchar      unused[28];
+    unchar      fw_magic;                       /* contr. ID from firmware */
+} PACKED gdt_pci_sram;
+
+/* SRAM structure EISA controllers (but NOT GDT3000/3020) */
+typedef struct {
+    unchar      os_used[16];                    /* OS code per service */
+    ushort      need_deinit;                    /* switch betw. BIOS/driver */
+    unchar      switch_support;                 /* see need_deinit */
+    unchar      padding;
+} PACKED gdt_eisa_sram;
+
+
+/* DPRAM ISA controllers */
+typedef struct {
+    union {
+        struct {
+            unchar      bios_used[0x3c00-32];   /* 15KB - 32Bytes BIOS */
+            ulong32     magic;                  /* controller (EISA) ID */
+            ushort      need_deinit;            /* switch betw. BIOS/driver */
+            unchar      switch_support;         /* see need_deinit */
+            unchar      padding[9];
+            unchar      os_used[16];            /* OS code per service */
+        } PACKED dp_sram;
+        unchar          bios_area[0x4000];      /* 16KB reserved for BIOS */
+    } bu;
+    union {
+        gdt_dpr_if      ic;                     /* interface area */
+        unchar          if_area[0x3000];        /* 12KB for interface */
+    } u;
+    struct {
+        unchar          memlock;                /* write protection DPRAM */
+        unchar          event;                  /* release event */
+        unchar          irqen;                  /* board interrupts enable */
+        unchar          irqdel;                 /* acknowledge board int. */
+        unchar volatile Sema1;                  /* status semaphore */
+        unchar          rq;                     /* IRQ/DRQ configuration */
+    } PACKED io;
+} PACKED gdt2_dpram_str;
+
+/* DPRAM PCI controllers */
+typedef struct {
+    union {
+        gdt_dpr_if      ic;                     /* interface area */
+        unchar          if_area[0xff0-sizeof(gdt_pci_sram)];
+    } u;
+    gdt_pci_sram        gdt6sr;                 /* SRAM structure */
+    struct {
+        unchar          unused0[1];
+        unchar volatile Sema1;                  /* command semaphore */
+        unchar          unused1[3];
+        unchar          irqen;                  /* board interrupts enable */
+        unchar          unused2[2];
+        unchar          event;                  /* release event */
+        unchar          unused3[3];
+        unchar          irqdel;                 /* acknowledge board int. */
+        unchar          unused4[3];
+    } PACKED io;
+} PACKED gdt6_dpram_str;
+
+/* PLX register structure (new PCI controllers) */
+typedef struct {
+    unchar              cfg_reg;        /* DPRAM cfg.(2:below 1MB,0:anywhere)*/
+    unchar              unused1[0x3f];
+    unchar volatile     sema0_reg;              /* command semaphore */
+    unchar volatile     sema1_reg;              /* status semaphore */
+    unchar              unused2[2];
+    ushort volatile     status;                 /* command status */
+    ushort              service;                /* service */
+    ulong32             info[2];                /* additional info */
+    unchar              unused3[0x10];
+    unchar              ldoor_reg;              /* PCI to local doorbell */
+    unchar              unused4[3];
+    unchar volatile     edoor_reg;              /* local to PCI doorbell */
+    unchar              unused5[3];
+    unchar              control0;               /* control0 register(unused) */
+    unchar              control1;               /* board interrupts enable */
+    unchar              unused6[0x16];
+} PACKED gdt6c_plx_regs;
+
+/* DPRAM new PCI controllers */
+typedef struct {
+    union {
+        gdt_dpr_if      ic;                     /* interface area */
+        unchar          if_area[0x4000-sizeof(gdt_pci_sram)];
+    } u;
+    gdt_pci_sram        gdt6sr;                 /* SRAM structure */
+} PACKED gdt6c_dpram_str;
+
+/* i960 register structure (PCI MPR controllers) */
+typedef struct {
+    unchar              unused1[16];
+    unchar volatile     sema0_reg;              /* command semaphore */
+    unchar              unused2;
+    unchar volatile     sema1_reg;              /* status semaphore */
+    unchar              unused3;
+    ushort volatile     status;                 /* command status */
+    ushort              service;                /* service */
+    ulong32             info[2];                /* additional info */
+    unchar              ldoor_reg;              /* PCI to local doorbell */
+    unchar              unused4[11];
+    unchar volatile     edoor_reg;              /* local to PCI doorbell */
+    unchar              unused5[7];
+    unchar              edoor_en_reg;           /* board interrupts enable */
+    unchar              unused6[27];
+    ulong32             unused7[939];         
+    ulong32             severity;       
+    char                evt_str[256];           /* event string */
+} PACKED gdt6m_i960_regs;
+
+/* DPRAM PCI MPR controllers */
+typedef struct {
+    gdt6m_i960_regs     i960r;                  /* 4KB i960 registers */
+    union {
+        gdt_dpr_if      ic;                     /* interface area */
+        unchar          if_area[0x3000-sizeof(gdt_pci_sram)];
+    } u;
+    gdt_pci_sram        gdt6sr;                 /* SRAM structure */
+} PACKED gdt6m_dpram_str;
+
+
+/* PCI resources */
+typedef struct {
+    struct pci_dev      *pdev;
+    ushort              vendor_id;              /* vendor (ICP, Intel, ..) */
+    ushort              device_id;              /* device ID (0,..,9) */
+    ushort              subdevice_id;           /* sub device ID */
+    unchar              bus;                    /* PCI bus */
+    unchar              device_fn;              /* PCI device/function no. */
+    ulong               dpmem;                  /* DPRAM address */
+    ulong               io;                     /* IO address */
+    ulong               io_mm;                  /* IO address mem. mapped */
+    unchar              irq;                    /* IRQ */
+} gdth_pci_str;
+
+
+/* controller information structure */
+typedef struct {
+    ushort              oem_id;                 /* OEM */
+    ushort              type;                   /* controller class */
+    ulong32             stype;                  /* subtype (PCI: device ID) */
+    ushort              subdevice_id;           /* sub device ID (PCI) */
+    ushort              fw_vers;                /* firmware version */
+    ushort              cache_feat;             /* feat. cache serv. (s/g,..)*/
+    ushort              raw_feat;               /* feat. raw service (s/g,..)*/
+    ushort              screen_feat;            /* feat. raw service (s/g,..)*/
+    ushort              bmic;                   /* BMIC address (EISA) */
+    void __iomem        *brd;                   /* DPRAM address */
+    ulong32             brd_phys;               /* slot number/BIOS address */
+    gdt6c_plx_regs      *plx;                   /* PLX regs (new PCI contr.) */
+    gdth_cmd_str        *pccb;                  /* address command structure */
+    ulong32             ccb_phys;               /* phys. address */
+#ifdef INT_COAL
+    gdth_coal_status    *coal_stat;             /* buffer for coalescing int.*/
+    ulong64             coal_stat_phys;         /* phys. address */
+#endif
+    char                *pscratch;              /* scratch (DMA) buffer */
+    ulong64             scratch_phys;           /* phys. address */
+    unchar              scratch_busy;           /* in use? */
+    unchar              dma64_support;          /* 64-bit DMA supported? */
+    gdth_msg_str        *pmsg;                  /* message buffer */
+    ulong64             msg_phys;               /* phys. address */
+    unchar              scan_mode;              /* current scan mode */
+    unchar              irq;                    /* IRQ */
+    unchar              drq;                    /* DRQ (ISA controllers) */
+    ushort              status;                 /* command status */
+    ushort              service;                /* service/firmware ver./.. */
+    ulong32             info;
+    ulong32             info2;                  /* additional info */
+    Scsi_Cmnd           *req_first;             /* top of request queue */
+    struct {
+        unchar          present;                /* Flag: host drive present? */
+        unchar          is_logdrv;              /* Flag: log. drive (master)? */
+        unchar          is_arraydrv;            /* Flag: array drive? */
+        unchar          is_master;              /* Flag: array drive master? */
+        unchar          is_parity;              /* Flag: parity drive? */
+        unchar          is_hotfix;              /* Flag: hotfix drive? */
+        unchar          master_no;              /* number of master drive */
+        unchar          lock;                   /* drive locked? (hot plug) */
+        unchar          heads;                  /* mapping */
+        unchar          secs;
+        ushort          devtype;                /* further information */
+        ulong64         size;                   /* capacity */
+        unchar          ldr_no;                 /* log. drive no. */
+        unchar          rw_attribs;             /* r/w attributes */
+        unchar          cluster_type;           /* cluster properties */
+        unchar          media_changed;          /* Flag:MOUNT/UNMOUNT occured */
+        ulong32         start_sec;              /* start sector */
+    } hdr[MAX_LDRIVES];                         /* host drives */
+    struct {
+        unchar          lock;                   /* channel locked? (hot plug) */
+        unchar          pdev_cnt;               /* physical device count */
+        unchar          local_no;               /* local channel number */
+        unchar          io_cnt[MAXID];          /* current IO count */
+        ulong32         address;                /* channel address */
+        ulong32         id_list[MAXID];         /* IDs of the phys. devices */
+    } raw[MAXBUS];                              /* SCSI channels */
+    struct {
+        Scsi_Cmnd       *cmnd;                  /* pending request */
+        ushort          service;                /* service */
+    } cmd_tab[GDTH_MAXCMDS];                    /* table of pend. requests */
+    unchar              bus_cnt;                /* SCSI bus count */
+    unchar              tid_cnt;                /* Target ID count */
+    unchar              bus_id[MAXBUS];         /* IOP IDs */
+    unchar              virt_bus;               /* number of virtual bus */
+    unchar              more_proc;              /* more /proc info supported */
+    ushort              cmd_cnt;                /* command count in DPRAM */
+    ushort              cmd_len;                /* length of actual command */
+    ushort              cmd_offs_dpmem;         /* actual offset in DPRAM */
+    ushort              ic_all_size;            /* sizeof DPRAM interf. area */
+    gdth_cpar_str       cpar;                   /* controller cache par. */
+    gdth_bfeat_str      bfeat;                  /* controller features */
+    gdth_binfo_str      binfo;                  /* controller info */
+    gdth_evt_data       dvr;                    /* event structure */
+    spinlock_t          smp_lock;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+    struct pci_dev      *pdev;
+#endif
+    char                oem_name[8];
+#ifdef GDTH_DMA_STATISTICS
+    ulong               dma32_cnt, dma64_cnt;   /* statistics: DMA buffer */
+#endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+    Scsi_Device         *sdev;
+#else
+    Scsi_Device         sdev;
+#endif
+} gdth_ha_str;
+
+/* structure for scsi_register(), SCSI bus != 0 */
+typedef struct {
+    ushort      hanum;
+    ushort      busnum;
+} gdth_num_str;
+
+/* structure for scsi_register() */
+typedef struct {
+    gdth_num_str        numext;                 /* must be the first element */
+    gdth_ha_str         haext;
+    gdth_cmd_str        cmdext;
+} gdth_ext_str;
+
+
+/* INQUIRY data format */
+typedef struct {
+    unchar      type_qual;
+    unchar      modif_rmb;
+    unchar      version;
+    unchar      resp_aenc;
+    unchar      add_length;
+    unchar      reserved1;
+    unchar      reserved2;
+    unchar      misc;
+    unchar      vendor[8];
+    unchar      product[16];
+    unchar      revision[4];
+} PACKED gdth_inq_data;
+
+/* READ_CAPACITY data format */
+typedef struct {
+    ulong32     last_block_no;
+    ulong32     block_length;
+} PACKED gdth_rdcap_data;
+
+/* READ_CAPACITY (16) data format */
+typedef struct {
+    ulong64     last_block_no;
+    ulong32     block_length;
+} PACKED gdth_rdcap16_data;
+
+/* REQUEST_SENSE data format */
+typedef struct {
+    unchar      errorcode;
+    unchar      segno;
+    unchar      key;
+    ulong32     info;
+    unchar      add_length;
+    ulong32     cmd_info;
+    unchar      adsc;
+    unchar      adsq;
+    unchar      fruc;
+    unchar      key_spec[3];
+} PACKED gdth_sense_data;
+
+/* MODE_SENSE data format */
+typedef struct {
+    struct {
+        unchar  data_length;
+        unchar  med_type;
+        unchar  dev_par;
+        unchar  bd_length;
+    } PACKED hd;
+    struct {
+        unchar  dens_code;
+        unchar  block_count[3];
+        unchar  reserved;
+        unchar  block_length[3];
+    } PACKED bd;
+} PACKED gdth_modep_data;
+
+/* stack frame */
+typedef struct {
+    ulong       b[10];                          /* 32/64 bit compiler ! */
+} PACKED gdth_stackframe;
+
+
+/* function prototyping */
+
+int gdth_detect(Scsi_Host_Template *);
+int gdth_release(struct Scsi_Host *);
+int gdth_queuecommand(Scsi_Cmnd *,void (*done)(Scsi_Cmnd *));
+const char *gdth_info(struct Scsi_Host *);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+int gdth_bios_param(struct scsi_device *,struct block_device *,sector_t,int *);
+int gdth_proc_info(struct Scsi_Host *, char *,char **,off_t,int,int);
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+int gdth_bios_param(Disk *,kdev_t,int *);
+int gdth_proc_info(char *,char **,off_t,int,int,int);
+#else
+int gdth_bios_param(Disk *,kdev_t,int *);
+extern struct proc_dir_entry proc_scsi_gdth;
+int gdth_proc_info(char *,char **,off_t,int,int,int);
+int gdth_abort(Scsi_Cmnd *);
+int gdth_reset(Scsi_Cmnd *,unsigned int); 
+#define GDTH { proc_dir:        &proc_scsi_gdth,                 \
+               proc_info:       gdth_proc_info,                  \
+               name:            "GDT SCSI Disk Array Controller",\
+               detect:          gdth_detect,                     \
+               release:         gdth_release,                    \
+               info:            gdth_info,                       \
+               command:         NULL,                            \
+               queuecommand:    gdth_queuecommand,               \
+               eh_abort_handler: gdth_eh_abort,                  \
+               eh_device_reset_handler: gdth_eh_device_reset,    \
+               eh_bus_reset_handler: gdth_eh_bus_reset,          \
+               eh_host_reset_handler: gdth_eh_host_reset,        \
+               abort:           gdth_abort,                      \
+               reset:           gdth_reset,                      \
+               bios_param:      gdth_bios_param,                 \
+               can_queue:       GDTH_MAXCMDS,                    \
+               this_id:         -1,                              \
+               sg_tablesize:    GDTH_MAXSG,                      \
+               cmd_per_lun:     GDTH_MAXC_P_L,                   \
+               present:         0,                               \
+               unchecked_isa_dma: 1,                             \
+               use_clustering:  ENABLE_CLUSTERING,               \
+               use_new_eh_code: 1       /* use new error code */ }    
+#endif
+
+int gdth_eh_abort(Scsi_Cmnd *scp);
+int gdth_eh_device_reset(Scsi_Cmnd *scp);
+int gdth_eh_bus_reset(Scsi_Cmnd *scp);
+int gdth_eh_host_reset(Scsi_Cmnd *scp);
+
+#endif