drivers/scsi/advansys.h

   1 /* $Id: advansys.h,v 1.17 1998/01/08 21:23:49 bobf Exp bobf $ */
   2
   3 /*
   4  * advansys.h - Linux Host Driver for AdvanSys SCSI Adapters
   5  *
   6  * Copyright (c) 1995-1998 Advanced System Products, Inc.
   7  * All Rights Reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that redistributions of source
  11  * code retain the above copyright notice and this comment without
  12  * modification.
  13  *
  14  * There is an AdvanSys Linux WWW page at:
  15  *  http://www.advansys.com/linux.html
  16  *
  17  * The latest version of the AdvanSys driver is available at:
  18  *  ftp://ftp.advansys.com/pub/linux
  19  *
  20  * Please send questions, comments, bug reports to:
  21  *  bobf@advansys.com (Bob Frey)
  22  */
  23
  24 #ifndef _ADVANSYS_H
  25 #define _ADVANSYS_H
  26
  27 /* Convert Linux Version, Patch-level, Sub-level to LINUX_VERSION_CODE. */
  28 #define ASC_LINUX_VERSION(V, P, S)    (((V) * 65536) + ((P) * 256) + (S))
  29
  30 #ifndef LINUX_VERSION_CODE
  31 #include <linux/version.h>
  32 #endif /* LINUX_VERSION_CODE */
  33
  34 /*
  35  * Scsi_Host_Template function prototypes.
  36  */
  37 int advansys_detect(Scsi_Host_Template *);
  38 int advansys_release(struct Scsi_Host *);
  39 const char *advansys_info(struct Scsi_Host *);
  40 int advansys_command(Scsi_Cmnd *);
  41 int advansys_queuecommand(Scsi_Cmnd *, void (* done)(Scsi_Cmnd *));
  42 int advansys_abort(Scsi_Cmnd *);
  43 #if LINUX_VERSION_CODE < ASC_LINUX_VERSION(1,3,89)
  44 int advansys_reset(Scsi_Cmnd *);
  45 #else /* version >= v1.3.89 */
  46 int advansys_reset(Scsi_Cmnd *, unsigned int);
  47 #endif /* version >= v1.3.89 */
  48 #if LINUX_VERSION_CODE < ASC_LINUX_VERSION(1,3,0)
  49 int advansys_biosparam(Disk *, int, int[]);
  50 #else /* version >= v1.3.0 */
  51 int advansys_biosparam(Disk *, kdev_t, int[]);
  52 extern struct proc_dir_entry proc_scsi_advansys;
  53 int advansys_proc_info(char *, char **, off_t, int, int, int);
  54 #endif /* version >= v1.3.0 */
  55
  56 /* init/main.c setup function */
  57 void advansys_setup(char *, int *);
  58
  59 /*
  60  * AdvanSys Host Driver Scsi_Host_Template (struct SHT) from hosts.h.
  61  */
  62 #if LINUX_VERSION_CODE < ASC_LINUX_VERSION(1,3,0)
  63 #define ADVANSYS { \
  64     NULL,                     /* struct SHT *next */ \
  65     NULL,                     /* int *usage_count */ \
  66     "advansys",               /* char *name */ \
  67     advansys_detect,          /* int (*detect)(struct SHT *) */ \
  68     advansys_release,         /* int (*release)(struct Scsi_Host *) */ \
  69     advansys_info,            /* const char *(*info)(struct Scsi_Host *) */ \
  70     advansys_command,         /* int (*command)(Scsi_Cmnd *) */ \
  71     advansys_queuecommand, \
  72             /* int (*queuecommand)(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *)) */ \
  73     advansys_abort,           /* int (*abort)(Scsi_Cmnd *) */ \
  74     advansys_reset,           /* int (*reset)(Scsi_Cmnd *) */ \
  75     NULL,                     /* int (*slave_attach)(int, int) */ \
  76     advansys_biosparam,       /* int (* bios_param)(Disk *, int, int []) */ \
  77     /* \
  78      * The following fields are set per adapter in advansys_detect(). \
  79      */ \
  80     0,                        /* int can_queue */ \
  81     0,                        /* int this_id */ \
  82     0,                        /* short unsigned int sg_tablesize */ \
  83     0,                        /* short cmd_per_lun */ \
  84     0,                        /* unsigned char present */    \
  85     /* \
  86      * Because the driver may control an ISA adapter 'unchecked_isa_dma' \
  87      * must be set. The flag will be cleared in advansys_detect for non-ISA \
  88      * adapters. Refer to the comment in scsi_module.c for more information. \
  89      */ \
  90     1,                        /* unsigned unchecked_isa_dma:1 */ \
  91     /* \
  92      * All adapters controlled by this driver are capable of large \
  93      * scatter-gather lists. According to the mid-level SCSI documentation \
  94      * this obviates any performance gain provided by setting \
  95      * 'use_clustering'. But empirically while CPU utilization is increased \
  96      * by enabling clustering, I/O throughput increases as well. \
  97      */ \
  98     ENABLE_CLUSTERING,        /* unsigned use_clustering:1 */ \
  99 }
 100 #elif LINUX_VERSION_CODE < ASC_LINUX_VERSION(2,1,75)
 101 #define ADVANSYS { \
 102     NULL,                    /* struct SHT *next */ \
 103     NULL, \
 104         /* version < v2.1.23 long *usage_count */ \
 105         /* version >= v2.1.23 struct module * */ \
 106     &proc_scsi_advansys,     /* struct proc_dir_entry *proc_dir */ \
 107     advansys_proc_info,    \
 108         /* int (*proc_info)(char *, char **, off_t, int, int, int) */ \
 109     "advansys",              /* const char *name */ \
 110     advansys_detect,         /* int (*detect)(struct SHT *) */ \
 111     advansys_release,        /* int (*release)(struct Scsi_Host *) */ \
 112     advansys_info,           /* const char *(*info)(struct Scsi_Host *) */ \
 113     advansys_command,        /* int (*command)(Scsi_Cmnd *) */ \
 114     advansys_queuecommand, \
 115         /* int (*queuecommand)(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *)) */ \
 116     advansys_abort,          /* int (*abort)(Scsi_Cmnd *) */ \
 117     advansys_reset, \
 118         /* version < v1.3.89 int (*reset)(Scsi_Cmnd *) */ \
 119         /* version >= v1.3.89 int (*reset)(Scsi_Cmnd *, unsigned int) */ \
 120     NULL,                    /* int (*slave_attach)(int, int) */ \
 121     advansys_biosparam,      /* int (* bios_param)(Disk *, kdev_t, int []) */ \
 122     /* \
 123      * The following fields are set per adapter in advansys_detect(). \
 124      */ \
 125     0,                        /* int can_queue */ \
 126     0,                        /* int this_id */ \
 127     0,                        /* short unsigned int sg_tablesize */ \
 128     0,                        /* short cmd_per_lun */ \
 129     0,                        /* unsigned char present */    \
 130     /* \
 131      * Because the driver may control an ISA adapter 'unchecked_isa_dma' \
 132      * must be set. The flag will be cleared in advansys_detect for non-ISA \
 133      * adapters. Refer to the comment in scsi_module.c for more information. \
 134      */ \
 135     1,                        /* unsigned unchecked_isa_dma:1 */ \
 136     /* \
 137      * All adapters controlled by this driver are capable of large \
 138      * scatter-gather lists. According to the mid-level SCSI documentation \
 139      * this obviates any performance gain provided by setting \
 140      * 'use_clustering'. But empirically while CPU utilization is increased \
 141      * by enabling clustering, I/O throughput increases as well. \
 142      */ \
 143     ENABLE_CLUSTERING,        /* unsigned use_clustering:1 */ \
 144 }
 145 #else /* version >= v2.1.75 */
 146 #define ADVANSYS { \
 147     proc_dir:     &proc_scsi_advansys, \
 148     proc_info:    advansys_proc_info, \
 149     name:         "advansys", \
 150     detect:       advansys_detect, \
 151     release:      advansys_release, \
 152     info:         advansys_info, \
 153     command:      advansys_command, \
 154     queuecommand: advansys_queuecommand, \
 155     abort:        advansys_abort, \
 156     reset:        advansys_reset, \
 157     bios_param:    advansys_biosparam, \
 158     /* \
 159      * Because the driver may control an ISA adapter 'unchecked_isa_dma' \
 160      * must be set. The flag will be cleared in advansys_detect for non-ISA \
 161      * adapters. Refer to the comment in scsi_module.c for more information. \
 162      */ \
 163     unchecked_isa_dma: 1, \
 164     /* \
 165      * All adapters controlled by this driver are capable of large \
 166      * scatter-gather lists. According to the mid-level SCSI documentation \
 167      * this obviates any performance gain provided by setting \
 168      * 'use_clustering'. But empirically while CPU utilization is increased \
 169      * by enabling clustering, I/O throughput increases as well. \
 170      */ \
 171     use_clustering: ENABLE_CLUSTERING, \
 172 }
 173 #endif /* version >= v2.1.75 */
 174 #endif /* _ADVANSYS_H */