usr/src/uts/common/sys/fdc.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  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_FDC_H
  27 #define _SYS_FDC_H
  28
  29 #ifdef  __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 #ifndef OTYPCNT
  34 #define OTYPCNT 5
  35 #endif
  36
  37 typedef struct xlate_tbl {
  38         int     value;
  39         uchar_t code;
  40 } xlate_tbl_t;
  41
  42 /*
  43  * the floppy disk minor device number is interpreted as follows:
  44  *
  45  *       7 6 5 4 3 2 1 0
  46  *      +---------+-----+
  47  *      |  drive  | part|
  48  *      +---------+-----+
  49  * where:
  50  *              drive = instance
  51  *              part = partition
  52  */
  53 /*
  54  * Macros for partition/drive from floppy device number,
  55  * plus other manifest defines....
  56  */
  57
  58 #define PARTITION(x)    (getminor(x) & 7)
  59 #define DRIVE(x)        (getminor(x) >> 3)
  60 #define FDUNIT(x)       ((x) & 3)       /* unit on controller */
  61 #define FDCTLR(x)       ((x) >> 2)      /* controller instance */
  62 #define NFDUN   4
  63
  64
  65 /*
  66  * Floppy drive / diskette type numbers.
  67  */
  68 #define FMT_5H    0
  69 #define FMT_5Q    1
  70 #define FMT_5D9   2
  71 #define FMT_5D8   3
  72 #define FMT_5D4   4
  73 #define FMT_5D16  5
  74 #define FMT_3E    6
  75 #define FMT_3H    7
  76 #define FMT_3I    8
  77 #define FMT_3M    9
  78 #define FMT_3D    10
  79 #define FMT_AUTO  11
  80 #define FMT_MAX   11
  81 #define FMT_UNKWN 11
  82
  83
  84 /*
  85  * Mini- and Micro- Diskettes Attributes Structure
  86  */
  87 struct fdattr {
  88         ushort_t fda_rotatespd;         /* rotational speed */
  89         ushort_t fda_intrlv;            /* interleave factor */
  90
  91         uchar_t fda_gapl;               /* gap 3 length */
  92         uchar_t fda_gapf;               /* gap 3 length for format */
  93 };
  94
  95 /*
  96  * Miscellaneous
  97  */
  98 #define FDWRITE 0                       /* for fdrw() flag */
  99 #define FDREAD  1                       /* for fdrw() flag */
 100 #define FDRDONE 86                      /*  . read with no retries */
 101
 102 /*
 103  * Per floppy-drive / diskette state structure
 104  */
 105
 106 struct fdisk {
 107         struct fcu_obj  *d_obj;
 108         int             d_media;        /* drive media capacities */
 109         struct kstat    *d_iostat;      /* pointer to iostat statistics */
 110         int             d_bpsshf;       /* shift count for bytes to sector */
 111
 112         ksema_t         d_ocsem;        /* sem for serializing opens/closes */
 113
 114         struct buf      *d_actf;        /* head of wait list */
 115         struct buf      *d_actl;        /* tail of wait list */
 116         struct buf      *d_current;     /* currently active buf */
 117         struct partition d_part[NDKMAP];        /* partitions descriptions */
 118
 119         /*
 120          * Regular open type flags.
 121          * Open types BLK, MNT, CHR, SWP assumed to be values 0-3.
 122          */
 123         ulong_t d_regopen[OTYPCNT - 1];
 124         ulong_t d_lyropen[NDKMAP];      /* Layered open counters */
 125
 126         /*
 127          * Exclusive open flags (per partition).
 128          *
 129          * The rules are that in order to open a partition exclusively,
 130          * the partition must be completely closed already. Once any
 131          * partition of the device is opened exclusively, no other open
 132          * on that partition may succeed until the partition is closed.
 133          */
 134         ulong_t         d_exclmask;     /* set to indicate exclusive open */
 135
 136         /*
 137          * Current drive characteristics type.
 138          * If -1, then it was set via an ioctl.  Note that a close
 139          * and then an open loses the ioctl set characteristics.
 140          */
 141         signed char     d_curfdtype;
 142         uchar_t         d_deffdtype;
 143
 144         uchar_t         d_bsec;         /* encoded bytes_per_sector */
 145         uchar_t         d_drate;        /* encoded data_rate */
 146         uchar_t         d_motor;        /* motor-on bit */
 147
 148         uchar_t         d_hutsrt;       /* encoded head unload & step_rate */
 149         uchar_t         d_hlt;          /* encoded head load time */
 150         uchar_t         d_dtl;          /* dtl code */
 151
 152         int     d_media_timeout;        /* media detection timeout */
 153         timeout_id_t    d_media_timeout_id; /* media detection timeout id */
 154         enum dkio_state d_media_state;  /* up-to-date media state */
 155         int             d_ejected;
 156         kcondvar_t      d_statecv;      /* condition var for media state */
 157
 158         ulong_t         d_vtoc_bootinfo[3];     /* from label */
 159         ulong_t         d_vtoc_version;
 160         time_t          d_vtoc_timestamp[NDKMAP];
 161         char            d_vtoc_volume[LEN_DKL_VVOL];
 162         char            d_vtoc_asciilabel[LEN_DKL_ASCII];
 163 };
 164
 165
 166 /* a place to keep some statistics on what's going on */
 167 struct fdstat {
 168         /* first operations */
 169         int rd;         /* count reads */
 170         int wr;         /* count writes */
 171         int recal;      /* count recalibrates */
 172         int form;       /* count format_tracks */
 173         int other;      /* count other ops */
 174
 175         /* then errors */
 176         int reset;      /* count resets */
 177         int to;         /* count timeouts */
 178         int run;        /* count overrun/underrun */
 179         int de;         /* count data errors */
 180         int bfmt;       /* count bad format errors */
 181 };
 182
 183 /*
 184  * floppy disk command and status block.
 185  *
 186  * Needed to execute a command. Since the floppy chip is
 187  * single threaded with respect to having only one drive
 188  * active at a time, this block of information is only
 189  * valid for the length of a command and gets rewritten
 190  * for each command.
 191  */
 192
 193 enum fxstate {
 194         FXS_START,
 195         FXS_MTRON,
 196         FXS_RCAL,
 197         FXS_DKCHGX,
 198         FXS_RESTART,
 199         FXS_RESEEK,
 200         FXS_SEEK,
 201         FXS_HDST,
 202         FXS_RDID,
 203         FXS_DOIT,
 204         FXS_DOWT,
 205         FXS_KILL,
 206         FXS_RESET,
 207         FXS_END
 208 };
 209
 210 enum fmtrstate {
 211         FMS_OFF,
 212         FMS_START,
 213         FMS_KILLST,
 214         FMS_ON,
 215         FMS_DELAY,
 216         FMS_IDLE
 217 };
 218
 219 enum fmtrinput {
 220         FMI_TIMER,
 221         FMI_STARTCMD,
 222         FMI_RSTARTCMD,
 223         FMI_DELAYCMD,
 224         FMI_IDLECMD
 225 };
 226
 227 struct fdcsb {
 228         struct buf *csb_bufp;   /* associated buf */
 229         ddi_dma_handle_t csb_dmahandle;
 230         int csb_handle_bound;           /* DMA handle has been bound */
 231         uint_t csb_dmacookiecnt;        /* number of DMA cookies */
 232         uint_t csb_dmacurrcookie;       /* current cookie number */
 233         uint_t csb_dmawincnt;           /* number of DMA windows */
 234         uint_t csb_dmacurrwin;          /* current DMA window */
 235         ddi_dma_cookie_t csb_dmacookie;
 236         enum fxstate csb_xstate;        /* Current execution state */
 237         enum fxstate csb_oldxs; /* old execution state */
 238         uchar_t csb_npcyl;      /* new physical cylinder number */
 239         uchar_t csb_drive;      /* floppy unit number */
 240         uchar_t csb_ncmds;      /* how many command bytes to send */
 241         uchar_t csb_nrslts;     /* number of result bytes gotten */
 242         uchar_t csb_opflags;    /* opflags, see below */
 243         uchar_t csb_timer;      /* op timer, in 0.1 sec */
 244         uchar_t csb_maxretry;   /* maximum retries this operation */
 245         uchar_t csb_retrys;     /* how may retrys done so far */
 246         uchar_t csb_ourtrys;    /* how may over/underrun retrys done so far */
 247         uchar_t csb_status;     /* status returned from hwintr */
 248         uchar_t csb_cmdstat;    /* if 0 then success, else failure */
 249         uchar_t csb_cmd[10];    /* command to send to chip */
 250         uchar_t csb_rslt[10];   /* results from chip */
 251 };
 252
 253 /*
 254  * defines for csb_opflags
 255  */
 256 #define CSB_OFINRPT     0x01            /* generates an interrupt */
 257 #define CSB_OFDMARD     0x02            /* uses DMA for reading */
 258 #define CSB_OFDMAWT     0x04            /* uses DMA for writing */
 259 #define CSB_OFRESLT     0x08            /* generates results */
 260 #define CSB_OFRAWIOCTL  0x10            /* raw i/o control */
 261
 262 #define CSB_CMDTO   0x01
 263 #define CSB_CMDDMA  0x03
 264 #define CSB_CMDNGNR 0x07
 265
 266
 267 /*
 268  * 82077AA Controller modes
 269  */
 270 enum fdcmode077 {
 271         FDCMODE_AT,
 272         FDCMODE_PS2,    /* not supported */
 273         FDCMODE_30
 274 };
 275
 276 /*
 277  * Per controller data
 278  */
 279
 280 struct fdcntlr {
 281         kmutex_t        c_lock;         /* controller mutex */
 282         kmutex_t        c_dorlock;      /* digital_output_register mutex */
 283         kcondvar_t      c_iocv;         /* condition var for I/O done */
 284         ksema_t         c_selsem;       /* sem for select unit */
 285         boolean_t       c_suspended;    /* if DDI_SUSPENDed */
 286
 287         dev_info_t      *c_dip;
 288         int             c_number;       /* logical controller number */
 289         int             c_regbase;      /* base i/o address */
 290         int             c_dmachan;      /* DMA channel number */
 291         int             c_intprio;      /* interrupt priority */
 292         int             c_intvec;       /* interrupt vector num */
 293         int             c_chip;
 294         enum fdcmode077 c_mode;         /* 82077 controller mode */
 295
 296         ulong_t         c_flags;        /* state information */
 297         struct kstat    *c_intrstat;    /* interrupt stats pointer */
 298         struct  fdstat  fdstats;        /* statistics */
 299
 300         ddi_iblock_cookie_t c_iblock;   /* returned from ddi_add_intr */
 301         ddi_idevice_cookie_t c_idevice; /* returned from ddi_add_intr */
 302
 303         int             c_curunit;      /* current/last selected unit */
 304         timeout_id_t    c_timeid;       /* watchdog timer id */
 305
 306         struct  fcu_obj *c_unit[NFDUN]; /* slave on controller */
 307         timeout_id_t    c_motort[NFDUN]; /* motor timer id */
 308         enum fmtrstate  c_mtrstate[NFDUN];
 309         int             c_curpcyl[NFDUN]; /* current physical cylinder */
 310         signed char     c_sekdir[NFDUN]; /* direction of last seek */
 311
 312         struct  fdcsb   c_csb;          /* current csb */
 313
 314         /*
 315          * floppy controller register values
 316          */
 317         uchar_t         c_digout;
 318         uchar_t         c_drate;        /* only 82072 and 82077AA controllers */
 319         uchar_t         c_config;       /* DSR on PC/AT with 8272A */
 320         uchar_t         c_mstat;
 321         uchar_t         c_data;
 322         uchar_t         c_digin;
 323
 324         uchar_t         c_bsec;         /* encoded bytes_per_sector */
 325         uchar_t         c_hutsrt;       /* encoded head unload & step_rate */
 326         uchar_t         c_hlt;          /* encoded head load time */
 327 };
 328
 329 /*
 330  * Controller flags
 331  */
 332 #define FCFLG_BUSY      0x01    /* operation in progress */
 333 #define FCFLG_WANT      0x02    /* csb structure wanted */
 334 #define FCFLG_WAITMR    0x10    /* waiting for motor to start I/O */
 335 #define FCFLG_WAITING   0x20    /* waiting on I/O completion */
 336 #define FCFLG_TIMEOUT   0x80    /* the current operation just timed out */
 337 #define FCFLG_DSOUT     0x100   /* DENSEL ouput is in use for speed ctl */
 338 #define FCFLG_3DMODE    0x800   /* ctlr is 3D Mode capable */
 339
 340
 341 /*
 342  * FDC operations
 343  */
 344
 345 struct fcobjops {
 346         int     (*fco_abort)();         /* controller abort */
 347         int     (*fco_dkinfo)();        /* get disk controller info */
 348
 349         int     (*fco_select)();        /* select / deselect unit */
 350         int     (*fco_getchng)();       /* get media change */
 351         int     (*fco_resetchng)();     /* reset media change */
 352         int     (*fco_rcseek)();        /* recal / seek */
 353         int     (*fco_rwbuf)();         /* read /write request */
 354         int     (*fco_rw)();            /* read /write sector */
 355         int     (*fco_format)();        /* format track */
 356         int     (*fco_rwioctl)();       /* raw ioctl */
 357 };
 358
 359 /*
 360  * FDC unit object
 361  */
 362
 363 struct fcu_obj {
 364         ulong_t         fj_flags;       /* state information */
 365         kmutex_t        fj_lock;        /* unit mutex */
 366         caddr_t         fj_data;
 367         struct fd_drive *fj_drive;      /* pointer to drive characteristics */
 368         struct fd_char  *fj_chars;      /* ptr to diskette characteristics */
 369         struct fdattr   *fj_attr;       /* additional diskette attributes */
 370         dev_info_t      *fj_dip;
 371         ushort_t        fj_rotspd;      /* rotational speed */
 372         ulong_t         fj_unit;
 373         struct fcobjops *fj_ops;
 374         struct fdcntlr  *fj_fdc;
 375         ddi_iblock_cookie_t *fj_iblock;
 376 };
 377
 378 /* unit flags (state info) */
 379 #define FUNIT_DRVATCH           0x001   /* this is drive present */
 380 #define FUNIT_WPROT             0x004   /* diskette is read only */
 381 #define FUNIT_CHAROK            0x010   /* characteristics are known */
 382 #define FUNIT_LABELOK           0x020   /* label was read from disk */
 383 #define FUNIT_UNLABELED         0x040   /* no label using default */
 384 #define FUNIT_CHANGED           0x100   /* diskette was changed after open */
 385 #define FUNIT_CHGDET            0x200   /* diskette removal was detected */
 386 #define FUNIT_3DMODE            0x4000  /* unit is in fast speed mode */
 387 #define FUNIT_BUSY              0x8000  /* unit is busy */
 388
 389 #ifdef _VPIX
 390 #define DRV_NONE        0x00
 391 #define DRV_DBL         0x01
 392 #define DRV_QUAD        0x02
 393 #define DRV_720         0x04    /* LOW_35 gets changed to this for or'ing */
 394 #define DRV_144         0x08    /* HI35 gets changed to this for or'ing */
 395
 396 /* ioctl numbers used by VPIX */
 397 #define FIOC            ('F'<<8)
 398 #define F_DTYP          (FIOC|60)       /* returns fd_drvtype */
 399 #define F_FCR           (FIOC|61)       /* output to Floppy Control Register */
 400 #define F_DOR           (FIOC|62)       /* output to Digital Output Register */
 401 #define F_RAW           (FIOC|63)       /* general raw controller interface */
 402 #endif
 403
 404 #ifdef  __cplusplus
 405 }
 406 #endif
 407
 408 #endif  /* !_SYS_FDC_H */