usr/src/uts/common/sys/cmlb_impl.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_CMLB_IMPL_H
  28 #define _SYS_CMLB_IMPL_H
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 #include <sys/cmlb.h>
  35 #include <sys/ddi.h>
  36 #include <sys/sunddi.h>
  37
  38 /*
  39  * FDISK partitions - 4 primary and MAX_EXT_PARTS number of Extended
  40  * Partitions.
  41  */
  42 #define FDISK_PARTS             (FD_NUMPART + MAX_EXT_PARTS)
  43
  44 #if defined(_SUNOS_VTOC_8)
  45 #define NSDMAP                  NDKMAP
  46 #elif defined(_SUNOS_VTOC_16)
  47 #define NSDMAP                  (NDKMAP + FDISK_PARTS + 1)
  48 #else
  49 #error "No VTOC format defined."
  50 #endif
  51
  52 #define MAXPART                 (NSDMAP + 1)
  53 #define WD_NODE                 7
  54
  55
  56 #if defined(__i386) || defined(__amd64)
  57
  58 #define P0_RAW_DISK             (NDKMAP)
  59 #define FDISK_P1                (NDKMAP+1)
  60 #define FDISK_P2                (NDKMAP+2)
  61 #define FDISK_P3                (NDKMAP+3)
  62 #define FDISK_P4                (NDKMAP+4)
  63
  64 #endif  /* __i386 || __amd64 */
  65
  66 /* Driver Logging Levels */
  67 #define CMLB_LOGMASK_ERROR      0x00000001
  68 #define CMLB_LOGMASK_INFO       0x00000002
  69 #define CMLB_LOGMASK_TRACE      0x00000004
  70
  71 #define CMLB_TRACE              0x00000001
  72 #define CMLB_INFO               0x00000002
  73 #define CMLB_ERROR              0x00000004
  74
  75
  76 #define CMLB_MUTEX(cl)          (&((cl)->cl_mutex))
  77 #define CMLB_DEVINFO(cl)        ((cl)->cl_devi)
  78 #define CMLB_LABEL(cl)          (ddi_driver_name((cl->cl_devi)))
  79
  80
  81 #define ISREMOVABLE(cl)         (cl->cl_is_removable)
  82 #define ISCD(cl)                (cl->cl_device_type == DTYPE_RODIRECT)
  83 #define ISHOTPLUGGABLE(cl)      (cl->cl_is_hotpluggable)
  84
  85 #if defined(_SUNOS_VTOC_8)
  86
  87 #define CMLBUNIT_SHIFT          3
  88 #define CMLBPART_MASK           7
  89
  90 #elif defined(_SUNOS_VTOC_16)
  91
  92 #define CMLBUNIT_SHIFT          6
  93 #define CMLBPART_MASK           63
  94
  95 #else
  96 #error "No VTOC format defined."
  97 #endif
  98
  99 #define CMLBUNIT(dev)           (getminor((dev)) >> CMLBUNIT_SHIFT)
 100 #define CMLBPART(dev)           (getminor((dev)) &  CMLBPART_MASK)
 101
 102 /*
 103  * Return codes of cmlb_uselabel().
 104  */
 105 #define CMLB_LABEL_IS_VALID     0
 106 #define CMLB_LABEL_IS_INVALID   1
 107
 108 #define CMLB_2TB_BLOCKS         0xffffffff
 109 #define CMLB_1TB_BLOCKS         0x7fffffff
 110
 111 #define CMLB_EXTVTOC_LIMIT      CMLB_2TB_BLOCKS
 112 #define CMLB_OLDVTOC_LIMIT      CMLB_1TB_BLOCKS
 113
 114 /*
 115  * fdisk partition mapping structure
 116  */
 117 struct fmap {
 118         ulong_t fmap_start;     /* starting block number */
 119         ulong_t fmap_nblk;      /* number of blocks */
 120         uchar_t fmap_systid;            /* systid of the partition */
 121 };
 122
 123 /* for cm_state */
 124 typedef enum  {
 125         CMLB_INITED = 0,
 126         CMLB_ATTACHED
 127 } cmlb_state_t;
 128
 129 typedef enum
 130 {
 131         CMLB_LABEL_UNDEF = 0,
 132         CMLB_LABEL_VTOC,
 133         CMLB_LABEL_EFI
 134 } cmlb_label_t;
 135
 136 #define CMLB_ALLOW_2TB_WARN 0x1
 137
 138
 139 typedef struct cmlb_lun {
 140         dev_info_t      *cl_devi;               /* pointer to devinfo */
 141         struct dk_vtoc  cl_vtoc;        /* disk VTOC */
 142         struct dk_geom  cl_g;           /* disk geometry */
 143
 144         diskaddr_t      cl_blockcount;          /* capacity */
 145         uint32_t        cl_tgt_blocksize;       /* blocksize */
 146
 147         diskaddr_t      cl_solaris_size;        /* size of Solaris partition */
 148         uint_t          cl_solaris_offset;      /* offset to Solaris part. */
 149
 150         struct  dk_map  cl_map[MAXPART];        /* logical partitions */
 151                                                 /* cylno is overloaded. used */
 152                                                 /* for starting block for EFI */
 153
 154         diskaddr_t      cl_offset[MAXPART];     /* partition start blocks */
 155
 156         struct fmap     cl_fmap[FDISK_PARTS];   /* fdisk partitions */
 157
 158         uchar_t         cl_asciilabel[LEN_DKL_ASCII];   /* Disk ASCII label */
 159
 160         /*
 161          * This is the HBAs current notion of the geometry of the drive,
 162          * for HBAs that support the "geometry" property.
 163          */
 164         struct cmlb_geom        cl_lgeom;
 165
 166         /*
 167          * This is the geometry of the device as reported by the MODE SENSE,
 168          * command, Page 3 (Format Device Page) and Page 4 (Rigid Disk Drive
 169          * Geometry Page), assuming MODE SENSE is supported by the target.
 170          */
 171         struct cmlb_geom        cl_pgeom;
 172
 173         ushort_t        cl_dkg_skew;            /* skew */
 174
 175         cmlb_label_t    cl_def_labeltype;       /* default label type */
 176
 177         /* label type based on which minor nodes were created last */
 178         cmlb_label_t    cl_last_labeltype;
 179
 180         cmlb_label_t    cl_cur_labeltype;       /* current label type */
 181
 182         /* indicates whether vtoc label is read from media */
 183         cmlb_label_t            cl_label_from_media;
 184
 185         cmlb_state_t    cl_state;               /* state of handle */
 186
 187         boolean_t       cl_f_geometry_is_valid;
 188         int             cl_sys_blocksize;
 189
 190         kmutex_t        cl_mutex;
 191
 192         /* the following are passed in at attach time */
 193         boolean_t       cl_is_removable;        /* is removable */
 194         boolean_t       cl_is_hotpluggable;     /* is hotpluggable */
 195         int             cl_alter_behavior;
 196         char            *cl_node_type;          /* DDI_NT_... */
 197         int             cl_device_type;         /* DTYPE_DIRECT,.. */
 198         int             cl_reserved;            /* reserved efi partition # */
 199         cmlb_tg_ops_t   *cmlb_tg_ops;
 200 #if defined(__i386) || defined(__amd64)
 201         /*
 202          * Flag indicating whether extended partition nodes should be created
 203          * or not. Is set in cmlb_attach. After creating nodes in
 204          * cmlb_read_fdisk, it will be unset.
 205          */
 206         int             cl_update_ext_minor_nodes;
 207         int             cl_logical_drive_count;
 208 #endif  /* __i386 || __amd64 */
 209         uint8_t         cl_msglog_flag;         /* used to enable/suppress */
 210                                                 /* certain log messages */
 211 } cmlb_lun_t;
 212
 213 _NOTE(SCHEME_PROTECTS_DATA("stable data", cmlb_lun::cmlb_tg_ops))
 214 _NOTE(SCHEME_PROTECTS_DATA("stable data", cmlb_lun::cl_devi))
 215 _NOTE(SCHEME_PROTECTS_DATA("stable data", cmlb_lun::cl_is_removable))
 216 _NOTE(SCHEME_PROTECTS_DATA("stable data", cmlb_lun::cl_is_hotpluggable))
 217 _NOTE(SCHEME_PROTECTS_DATA("stable data", cmlb_lun::cl_node_type))
 218 _NOTE(SCHEME_PROTECTS_DATA("stable data", cmlb_lun::cl_sys_blocksize))
 219 _NOTE(SCHEME_PROTECTS_DATA("stable data", cmlb_lun::cl_alter_behavior))
 220 _NOTE(SCHEME_PROTECTS_DATA("private data", cmlb_geom))
 221 _NOTE(SCHEME_PROTECTS_DATA("safe sharing", cmlb_lun::cl_f_geometry_is_valid))
 222
 223 _NOTE(MUTEX_PROTECTS_DATA(cmlb_lun::cl_mutex, cmlb_lun::cl_vtoc))
 224
 225
 226 #define DK_TG_READ(ihdlp, bufaddr, start_block, reqlength, tg_cookie)\
 227         (ihdlp->cmlb_tg_ops->tg_rdwr)(CMLB_DEVINFO(ihdlp), TG_READ, \
 228         bufaddr, start_block, reqlength, tg_cookie)
 229
 230 #define DK_TG_WRITE(ihdlp,  bufaddr, start_block, reqlength, tg_cookie)\
 231         (ihdlp->cmlb_tg_ops->tg_rdwr)(CMLB_DEVINFO(ihdlp), TG_WRITE,\
 232         bufaddr, start_block, reqlength, tg_cookie)
 233
 234 #define DK_TG_GETPHYGEOM(ihdlp, phygeomp, tg_cookie) \
 235         (ihdlp->cmlb_tg_ops->tg_getinfo)(CMLB_DEVINFO(ihdlp), TG_GETPHYGEOM,\
 236             (void *)phygeomp, tg_cookie)
 237
 238 #define DK_TG_GETVIRTGEOM(ihdlp, virtgeomp, tg_cookie) \
 239         (ihdlp->cmlb_tg_ops->tg_getinfo)(CMLB_DEVINFO(ihdlp), TG_GETVIRTGEOM,\
 240             (void *)virtgeomp, tg_cookie)
 241
 242 #define DK_TG_GETCAP(ihdlp, capp, tg_cookie) \
 243         (ihdlp->cmlb_tg_ops->tg_getinfo)(CMLB_DEVINFO(ihdlp), TG_GETCAPACITY,\
 244         capp, tg_cookie)
 245
 246 #define DK_TG_GETBLOCKSIZE(ihdlp, lbap, tg_cookie) \
 247         (ihdlp->cmlb_tg_ops->tg_getinfo)(CMLB_DEVINFO(ihdlp),\
 248         TG_GETBLOCKSIZE, lbap, tg_cookie)
 249
 250 #define DK_TG_GETATTRIBUTE(ihdlp, attributep, tg_cookie) \
 251         (ihdlp->cmlb_tg_ops->tg_getinfo)(CMLB_DEVINFO(ihdlp), TG_GETATTR,\
 252             attributep, tg_cookie)
 253
 254 #ifdef __cplusplus
 255 }
 256 #endif
 257
 258 #endif  /* _SYS_CMLB_IMPL_H */