sys/sys/camlib.h

   1 /*
   2  * Copyright (c) 1997, 1998 Kenneth D. Merry.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. The name of the author may not be used to endorse or promote products
  11  *    derived from this software without specific prior written permission.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  *
  25  * $FreeBSD: src/lib/libcam/camlib.h,v 1.2 1999/08/28 00:04:06 peter Exp $
  26  * $DragonFly: src/sys/sys/camlib.h,v 1.6 2007/11/24 03:13:03 pavalos Exp $
  27  */
  28 /*
  29  * Buffer encoding/decoding routines taken from the original FreeBSD SCSI
  30  * library and slightly modified.  The original header file had the following
  31  * copyright:
  32  */
  33 /* Copyright (c) 1994 HD Associates (hd@world.std.com)
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  * This product includes software developed by HD Associates
  47  * 4. Neither the name of the HD Associaates nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  */
  63
  64
  65 #ifndef _SYS_CAMLIB_H_
  66 #define _SYS_CAMLIB_H_
  67
  68 #ifndef _SYS_CDEFS_H_
  69 #include <sys/cdefs.h>
  70 #endif
  71 #ifndef _SYS_PARAM_H_
  72 #include <sys/param.h>
  73 #endif
  74 #ifndef _BUS_CAM_CAM_H_
  75 #include <bus/cam/cam.h>
  76 #endif
  77 #ifndef _BUS_CAM_CAM_CCB_H_
  78 #include <bus/cam/cam_ccb.h>
  79 #endif
  80
  81 #define CAM_ERRBUF_SIZE 2048    /* sizeof the CAM libarary error string  */
  82
  83 /*
  84  * Right now we hard code the transport layer device, but this will change
  85  * if we ever get more than one transport layer.
  86  */
  87 #define XPT_DEVICE      "/dev/xpt0"
  88
  89
  90 extern char cam_errbuf[];
  91
  92 struct cam_device {
  93         char            device_path[MAXPATHLEN];  /*
  94                                                    * Pathname of the device
  95                                                    * given by the user. This
  96                                                    * may be null if the
  97                                                    * user states the device
  98                                                    * name and unit number
  99                                                    * separately.
 100                                                    */
 101         char            given_dev_name[DEV_IDLEN+1];/*
 102                                                      * Device name given by
 103                                                      * the user.
 104                                                      */
 105         u_int32_t       given_unit_number;          /*
 106                                                      * Unit number given by
 107                                                      * the user.
 108                                                      */
 109         char            device_name[DEV_IDLEN+1];/*
 110                                                   * Name of the device,
 111                                                   * e.g. 'pass'
 112                                                   */
 113         u_int32_t       dev_unit_num;   /* Unit number of the passthrough
 114                                          * device associated with this
 115                                          * particular device.
 116                                          */
 117
 118         char            sim_name[SIM_IDLEN+1]; /* Controller name, e.g. 'ahc' */
 119         u_int32_t       sim_unit_number; /* Controller unit number */
 120         u_int32_t       bus_id;          /* Controller bus number */
 121         lun_id_t        target_lun;      /* Logical Unit Number */
 122         target_id_t     target_id;       /* Target ID */
 123         path_id_t       path_id;         /* System SCSI bus number */
 124         u_int16_t       pd_type;         /* type of peripheral device */
 125         struct scsi_inquiry_data inq_data;  /* SCSI Inquiry data */
 126         u_int8_t        serial_num[252]; /* device serial number */
 127         u_int8_t        serial_num_len;  /* length of the serial number */
 128         u_int8_t        sync_period;     /* Negotiated sync period */
 129         u_int8_t        sync_offset;     /* Negotiated sync offset */
 130         u_int8_t        bus_width;       /* Negotiated bus width */
 131         int             fd;              /* file descriptor for device */
 132 };
 133
 134 __BEGIN_DECLS
 135 /* Basic utility commands */
 136 struct cam_device *     cam_open_device(const char *path, int flags);
 137 void                    cam_close_device(struct cam_device *dev);
 138 void                    cam_close_spec_device(struct cam_device *dev);
 139 struct cam_device *     cam_open_spec_device(const char *dev_name,
 140                                              int unit, int flags,
 141                                              struct cam_device *device);
 142 struct cam_device *     cam_open_btl(path_id_t path_id, target_id_t target_id,
 143                                      lun_id_t target_lun, int flags,
 144                                      struct cam_device *device);
 145 struct cam_device *     cam_open_pass(const char *path, int flags,
 146                                       struct cam_device *device);
 147 union ccb *             cam_getccb(struct cam_device *dev);
 148 void                    cam_freeccb(union ccb *ccb);
 149 int                     cam_send_ccb(struct cam_device *device, union ccb *ccb);
 150 char *                  cam_path_string(struct cam_device *dev, char *str,
 151                                         int len);
 152 struct cam_device *     cam_device_dup(struct cam_device *device);
 153 void                    cam_device_copy(struct cam_device *src,
 154                                         struct cam_device *dst);
 155 int                     cam_get_device(const char *path, char *dev_name,
 156                                        int devnamelen, int *unit);
 157
 158 /*
 159  * Buffer encoding/decoding routines, from the old SCSI library.
 160  */
 161 int csio_decode(struct ccb_scsiio *csio, const char *fmt, ...)
 162                 __printflike(2, 3);
 163 int csio_decode_visit(struct ccb_scsiio *csio, const char *fmt,
 164                       void (*arg_put)(void *, int, void *, int, char *),
 165                       void *puthook);
 166 int buff_decode(u_int8_t *buff, size_t len, const char *fmt, ...)
 167                 __printflike(3, 4);
 168 int buff_decode_visit(u_int8_t *buff, size_t len, const char *fmt,
 169                       void (*arg_put)(void *, int, void *, int, char *),
 170                       void *puthook);
 171 int csio_build(struct ccb_scsiio *csio, u_int8_t *data_ptr,
 172                u_int32_t dxfer_len, u_int32_t flags, int retry_count,
 173                int timeout, const char *cmd_spec, ...);
 174 int csio_build_visit(struct ccb_scsiio *csio, u_int8_t *data_ptr,
 175                      u_int32_t dxfer_len, u_int32_t flags, int retry_count,
 176                      int timeout, const char *cmd_spec,
 177                      int (*arg_get)(void *hook, char *field_name),
 178                      void *gethook);
 179 int csio_encode(struct ccb_scsiio *csio, const char *fmt, ...)
 180                 __printflike(2, 3);
 181 int buff_encode_visit(u_int8_t *buff, size_t len, const char *fmt,
 182                       int (*arg_get)(void *hook, char *field_name),
 183                       void *gethook);
 184 int csio_encode_visit(struct ccb_scsiio *csio, const char *fmt,
 185                       int (*arg_get)(void *hook, char *field_name),
 186                       void *gethook);
 187 __END_DECLS
 188
 189 #endif /* _SYS_CAMLIB_H_ */