drivers/scsi/pcmcia/nsp_cs.h

   1 /*=======================================================/
   2   Header file for nsp_cs.c
   3       By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
   4
   5     Ver.1.0 : Cut unused lines.
   6     Ver 0.1 : Initial version.
   7
   8     This software may be used and distributed according to the terms of
   9     the GNU General Public License.
  10
  11 =========================================================*/
  12
  13 /* $Id: nsp_cs.h,v 1.19 2003/08/18 11:09:19 elca Exp $ */
  14
  15 #ifndef  __nsp_cs__
  16 #define  __nsp_cs__
  17
  18 /* for debugging */
  19 //#define NSP_DEBUG 9
  20
  21 /*
  22 #define static
  23 #define inline
  24 */
  25
  26 /************************************
  27  * Some useful macros...
  28  */
  29 #define BIT(x)      (1L << (x))
  30
  31 /* SCSI initiator must be ID 7 */
  32 #define NSP_INITIATOR_ID  7
  33
  34 #define NSP_SELTIMEOUT 200
  35
  36 /***************************************************************************
  37  * register definitions
  38  ***************************************************************************/
  39 /*========================================================================
  40  * base register
  41  ========================================================================*/
  42 #define IRQCONTROL      0x00  /* R */
  43 #  define IRQCONTROL_RESELECT_CLEAR     BIT(0)
  44 #  define IRQCONTROL_PHASE_CHANGE_CLEAR BIT(1)
  45 #  define IRQCONTROL_TIMER_CLEAR        BIT(2)
  46 #  define IRQCONTROL_FIFO_CLEAR         BIT(3)
  47 #  define IRQCONTROL_ALLMASK            0xff
  48 #  define IRQCONTROL_ALLCLEAR           (IRQCONTROL_RESELECT_CLEAR     | \
  49                                          IRQCONTROL_PHASE_CHANGE_CLEAR | \
  50                                          IRQCONTROL_TIMER_CLEAR        | \
  51                                          IRQCONTROL_FIFO_CLEAR          )
  52 #  define IRQCONTROL_IRQDISABLE         0xf0
  53
  54 #define IRQSTATUS       0x00  /* W */
  55 #  define IRQSTATUS_SCSI  BIT(0)
  56 #  define IRQSTATUS_TIMER BIT(2)
  57 #  define IRQSTATUS_FIFO  BIT(3)
  58 #  define IRQSTATUS_MASK  0x0f
  59
  60 #define IFSELECT        0x01 /* W */
  61 #  define IF_IFSEL    BIT(0)
  62 #  define IF_REGSEL   BIT(2)
  63
  64 #define FIFOSTATUS      0x01 /* R */
  65 #  define FIFOSTATUS_CHIP_REVISION_MASK 0x0f
  66 #  define FIFOSTATUS_CHIP_ID_MASK       0x70
  67 #  define FIFOSTATUS_FULL_EMPTY         BIT(7)
  68
  69 #define INDEXREG        0x02 /* R/W */
  70 #define DATAREG         0x03 /* R/W */
  71 #define FIFODATA        0x04 /* R/W */
  72 #define FIFODATA1       0x05 /* R/W */
  73 #define FIFODATA2       0x06 /* R/W */
  74 #define FIFODATA3       0x07 /* R/W */
  75
  76 /*====================================================================
  77  * indexed register
  78  ====================================================================*/
  79 #define EXTBUSCTRL      0x10 /* R/W,deleted */
  80
  81 #define CLOCKDIV        0x11 /* R/W */
  82 #  define CLOCK_40M 0x02
  83 #  define CLOCK_20M 0x01
  84 #  define FAST_20   BIT(2)
  85
  86 #define TERMPWRCTRL     0x13 /* R/W */
  87 #  define POWER_ON BIT(0)
  88
  89 #define SCSIIRQMODE     0x15 /* R/W */
  90 #  define SCSI_PHASE_CHANGE_EI BIT(0)
  91 #  define RESELECT_EI          BIT(4)
  92 #  define FIFO_IRQ_EI          BIT(5)
  93 #  define SCSI_RESET_IRQ_EI    BIT(6)
  94
  95 #define IRQPHASESENCE   0x16 /* R */
  96 #  define LATCHED_MSG      BIT(0)
  97 #  define LATCHED_IO       BIT(1)
  98 #  define LATCHED_CD       BIT(2)
  99 #  define LATCHED_BUS_FREE BIT(3)
 100 #  define PHASE_CHANGE_IRQ BIT(4)
 101 #  define RESELECT_IRQ     BIT(5)
 102 #  define FIFO_IRQ         BIT(6)
 103 #  define SCSI_RESET_IRQ   BIT(7)
 104
 105 #define TIMERCOUNT      0x17 /* R/W */
 106
 107 #define SCSIBUSCTRL     0x18 /* R/W */
 108 #  define SCSI_SEL         BIT(0)
 109 #  define SCSI_RST         BIT(1)
 110 #  define SCSI_DATAOUT_ENB BIT(2)
 111 #  define SCSI_ATN         BIT(3)
 112 #  define SCSI_ACK         BIT(4)
 113 #  define SCSI_BSY         BIT(5)
 114 #  define AUTODIRECTION    BIT(6)
 115 #  define ACKENB           BIT(7)
 116
 117 #define SCSIBUSMON      0x19 /* R */
 118
 119 #define SETARBIT        0x1A /* W */
 120 #  define ARBIT_GO         BIT(0)
 121 #  define ARBIT_FLAG_CLEAR BIT(1)
 122
 123 #define ARBITSTATUS     0x1A /* R */
 124 /*#  define ARBIT_GO        BIT(0)*/
 125 #  define ARBIT_WIN        BIT(1)
 126 #  define ARBIT_FAIL       BIT(2)
 127 #  define RESELECT_FLAG    BIT(3)
 128
 129 #define PARITYCTRL      0x1B  /* W */
 130 #define PARITYSTATUS    0x1B  /* R */
 131
 132 #define COMMANDCTRL     0x1C  /* W */
 133 #  define CLEAR_COMMAND_POINTER BIT(0)
 134 #  define AUTO_COMMAND_GO       BIT(1)
 135
 136 #define RESELECTID      0x1C  /* R   */
 137 #define COMMANDDATA     0x1D  /* R/W */
 138
 139 #define POINTERCLR      0x1E  /*   W */
 140 #  define POINTER_CLEAR      BIT(0)
 141 #  define ACK_COUNTER_CLEAR  BIT(1)
 142 #  define REQ_COUNTER_CLEAR  BIT(2)
 143 #  define HOST_COUNTER_CLEAR BIT(3)
 144 #  define READ_SOURCE        (BIT(4) | BIT(5))
 145 #    define ACK_COUNTER        (0)
 146 #    define REQ_COUNTER        (BIT(4))
 147 #    define HOST_COUNTER       (BIT(5))
 148
 149 #define TRANSFERCOUNT   0x1E  /* R   */
 150
 151 #define TRANSFERMODE    0x20  /* R/W */
 152 #  define MODE_MEM8   BIT(0)
 153 #  define MODE_MEM32  BIT(1)
 154 #  define MODE_ADR24  BIT(2)
 155 #  define MODE_ADR32  BIT(3)
 156 #  define MODE_IO8    BIT(4)
 157 #  define MODE_IO32   BIT(5)
 158 #  define TRANSFER_GO BIT(6)
 159 #  define BRAIND      BIT(7)
 160
 161 #define SYNCREG         0x21 /* R/W */
 162 #  define SYNCREG_OFFSET_MASK  0x0f
 163 #  define SYNCREG_PERIOD_MASK  0xf0
 164 #  define SYNCREG_PERIOD_SHIFT 4
 165
 166 #define SCSIDATALATCH   0x22 /*   W */
 167 #define SCSIDATAIN      0x22 /* R   */
 168 #define SCSIDATAWITHACK 0x23 /* R/W */
 169 #define SCAMCONTROL     0x24 /*   W */
 170 #define SCAMSTATUS      0x24 /* R   */
 171 #define SCAMDATA        0x25 /* R/W */
 172
 173 #define OTHERCONTROL    0x26 /* R/W */
 174 #  define TPL_ROM_WRITE_EN BIT(0)
 175 #  define TPWR_OUT         BIT(1)
 176 #  define TPWR_SENSE       BIT(2)
 177 #  define RA8_CONTROL      BIT(3)
 178
 179 #define ACKWIDTH        0x27 /* R/W */
 180 #define CLRTESTPNT      0x28 /*   W */
 181 #define ACKCNTLD        0x29 /*   W */
 182 #define REQCNTLD        0x2A /*   W */
 183 #define HSTCNTLD        0x2B /*   W */
 184 #define CHECKSUM        0x2C /* R/W */
 185
 186 /************************************************************************
 187  * Input status bit definitions.
 188  ************************************************************************/
 189 #define S_MESSAGE       BIT(0)    /* Message line from SCSI bus      */
 190 #define S_IO            BIT(1)    /* Input/Output line from SCSI bus */
 191 #define S_CD            BIT(2)    /* Command/Data line from SCSI bus */
 192 #define S_BUSY          BIT(3)    /* Busy line from SCSI bus         */
 193 #define S_ACK           BIT(4)    /* Acknowlege line from SCSI bus   */
 194 #define S_REQUEST       BIT(5)    /* Request line from SCSI bus      */
 195 #define S_SELECT        BIT(6)    /*                                 */
 196 #define S_ATN           BIT(7)    /*                                 */
 197
 198 /***********************************************************************
 199  * Useful Bus Monitor status combinations.
 200  ***********************************************************************/
 201 #define BUSMON_SEL         S_SELECT
 202 #define BUSMON_BSY         S_BUSY
 203 #define BUSMON_REQ         S_REQUEST
 204 #define BUSMON_IO          S_IO
 205 #define BUSMON_ACK         S_ACK
 206 #define BUSMON_BUS_FREE    0
 207 #define BUSMON_COMMAND     ( S_BUSY | S_CD |                    S_REQUEST )
 208 #define BUSMON_MESSAGE_IN  ( S_BUSY | S_CD | S_IO | S_MESSAGE | S_REQUEST )
 209 #define BUSMON_MESSAGE_OUT ( S_BUSY | S_CD |        S_MESSAGE | S_REQUEST )
 210 #define BUSMON_DATA_IN     ( S_BUSY |        S_IO |             S_REQUEST )
 211 #define BUSMON_DATA_OUT    ( S_BUSY |                           S_REQUEST )
 212 #define BUSMON_STATUS      ( S_BUSY | S_CD | S_IO |             S_REQUEST )
 213 #define BUSMON_SELECT      (                 S_IO |                        S_SELECT )
 214 #define BUSMON_RESELECT    (                 S_IO |                        S_SELECT )
 215 #define BUSMON_PHASE_MASK  (          S_CD | S_IO | S_MESSAGE |            S_SELECT )
 216
 217 #define BUSPHASE_SELECT      ( BUSMON_SELECT      & BUSMON_PHASE_MASK )
 218 #define BUSPHASE_COMMAND     ( BUSMON_COMMAND     & BUSMON_PHASE_MASK )
 219 #define BUSPHASE_MESSAGE_IN  ( BUSMON_MESSAGE_IN  & BUSMON_PHASE_MASK )
 220 #define BUSPHASE_MESSAGE_OUT ( BUSMON_MESSAGE_OUT & BUSMON_PHASE_MASK )
 221 #define BUSPHASE_DATA_IN     ( BUSMON_DATA_IN     & BUSMON_PHASE_MASK )
 222 #define BUSPHASE_DATA_OUT    ( BUSMON_DATA_OUT    & BUSMON_PHASE_MASK )
 223 #define BUSPHASE_STATUS      ( BUSMON_STATUS      & BUSMON_PHASE_MASK )
 224
 225 /*====================================================================*/
 226
 227 typedef struct scsi_info_t {
 228         struct pcmcia_device    *p_dev;
 229         struct Scsi_Host      *host;
 230 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,74))
 231         dev_node_t             node;
 232 #else
 233         int                    ndev;
 234         dev_node_t             node[8];
 235         struct bus_operations *bus;
 236 #endif
 237         int                    stop;
 238 } scsi_info_t;
 239
 240
 241 /* synchronous transfer negotiation data */
 242 typedef struct _sync_data {
 243         unsigned int SyncNegotiation;
 244 #define SYNC_NOT_YET 0
 245 #define SYNC_OK      1
 246 #define SYNC_NG      2
 247
 248         unsigned int  SyncPeriod;
 249         unsigned int  SyncOffset;
 250         unsigned char SyncRegister;
 251         unsigned char AckWidth;
 252 } sync_data;
 253
 254 typedef struct _nsp_hw_data {
 255         unsigned int  BaseAddress;
 256         unsigned int  NumAddress;
 257         unsigned int  IrqNumber;
 258
 259         unsigned long MmioAddress;
 260 #define NSP_MMIO_OFFSET 0x0800
 261         unsigned long MmioLength;
 262
 263         unsigned char ScsiClockDiv;
 264
 265         unsigned char TransferMode;
 266
 267         int           TimerCount;
 268         int           SelectionTimeOut;
 269         Scsi_Cmnd    *CurrentSC;
 270         //int           CurrnetTarget;
 271
 272         int           FifoCount;
 273
 274 #define MSGBUF_SIZE 20
 275         unsigned char MsgBuffer[MSGBUF_SIZE];
 276         int MsgLen;
 277
 278 #define N_TARGET 8
 279         sync_data     Sync[N_TARGET];
 280
 281         char nspinfo[110];     /* description */
 282         spinlock_t Lock;
 283
 284         scsi_info_t   *ScsiInfo; /* attach <-> detect glue */
 285
 286
 287 #ifdef NSP_DEBUG
 288         int CmdId; /* Accepted command serial number.
 289                       Used for debugging.             */
 290 #endif
 291 } nsp_hw_data;
 292
 293
 294 /****************************************************************************
 295  *
 296  */
 297
 298 /* Card service functions */
 299 static void        nsp_cs_detach (struct pcmcia_device *p_dev);
 300 static void        nsp_cs_release(struct pcmcia_device *link);
 301 static int        nsp_cs_config (struct pcmcia_device *link);
 302
 303 /* Linux SCSI subsystem specific functions */
 304 static struct Scsi_Host *nsp_detect     (struct scsi_host_template *sht);
 305 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 306 static        int        nsp_detect_old (struct scsi_host_template *sht);
 307 static        int        nsp_release_old(struct Scsi_Host *shpnt);
 308 #endif
 309 static const  char      *nsp_info       (struct Scsi_Host *shpnt);
 310 static        int        nsp_proc_info  (
 311 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
 312                                          struct Scsi_Host *host,
 313 #endif
 314                                          char   *buffer,
 315                                          char  **start,
 316                                          off_t   offset,
 317                                          int     length,
 318 #if !(LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
 319                                          int     hostno,
 320 #endif
 321                                          int     inout);
 322 static        int        nsp_queuecommand(Scsi_Cmnd *SCpnt, void (* done)(Scsi_Cmnd *SCpnt));
 323
 324 /* Error handler */
 325 /*static int nsp_eh_abort       (Scsi_Cmnd *SCpnt);*/
 326 /*static int nsp_eh_device_reset(Scsi_Cmnd *SCpnt);*/
 327 static int nsp_eh_bus_reset    (Scsi_Cmnd *SCpnt);
 328 static int nsp_eh_host_reset   (Scsi_Cmnd *SCpnt);
 329 static int nsp_bus_reset       (nsp_hw_data *data);
 330
 331 /* */
 332 static int  nsphw_init           (nsp_hw_data *data);
 333 static int  nsphw_start_selection(Scsi_Cmnd *SCpnt);
 334 static void nsp_start_timer      (Scsi_Cmnd *SCpnt, int time);
 335 static int  nsp_fifo_count       (Scsi_Cmnd *SCpnt);
 336 static void nsp_pio_read         (Scsi_Cmnd *SCpnt);
 337 static void nsp_pio_write        (Scsi_Cmnd *SCpnt);
 338 static int  nsp_nexus            (Scsi_Cmnd *SCpnt);
 339 static void nsp_scsi_done        (Scsi_Cmnd *SCpnt);
 340 static int  nsp_analyze_sdtr     (Scsi_Cmnd *SCpnt);
 341 static int  nsp_negate_signal    (Scsi_Cmnd *SCpnt, unsigned char mask, char *str);
 342 static int  nsp_expect_signal    (Scsi_Cmnd *SCpnt, unsigned char current_phase, unsigned char  mask);
 343 static int  nsp_xfer             (Scsi_Cmnd *SCpnt, int phase);
 344 static int  nsp_dataphase_bypass (Scsi_Cmnd *SCpnt);
 345 static int  nsp_reselected       (Scsi_Cmnd *SCpnt);
 346 static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht);
 347
 348 /* Interrupt handler */
 349 //static irqreturn_t nspintr(int irq, void *dev_id, struct pt_regs *regs);
 350
 351 /* Module entry point*/
 352 static int  __init nsp_cs_init(void);
 353 static void __exit nsp_cs_exit(void);
 354
 355
 356 /* Debug */
 357 #ifdef NSP_DEBUG
 358 static void show_command (Scsi_Cmnd *SCpnt);
 359 static void show_phase   (Scsi_Cmnd *SCpnt);
 360 static void show_busphase(unsigned char stat);
 361 static void show_message (nsp_hw_data *data);
 362 #else
 363 # define show_command(ptr)   /* */
 364 # define show_phase(SCpnt)   /* */
 365 # define show_busphase(stat) /* */
 366 # define show_message(data)  /* */
 367 #endif
 368
 369 /*
 370  * SCSI phase
 371  */
 372 enum _scsi_phase {
 373         PH_UNDETERMINED ,
 374         PH_ARBSTART     ,
 375         PH_SELSTART     ,
 376         PH_SELECTED     ,
 377         PH_COMMAND      ,
 378         PH_DATA         ,
 379         PH_STATUS       ,
 380         PH_MSG_IN       ,
 381         PH_MSG_OUT      ,
 382         PH_DISCONNECT   ,
 383         PH_RESELECT     ,
 384         PH_ABORT        ,
 385         PH_RESET
 386 };
 387
 388 enum _data_in_out {
 389         IO_UNKNOWN,
 390         IO_IN,
 391         IO_OUT
 392 };
 393
 394 enum _burst_mode {
 395         BURST_IO8   = 0,
 396         BURST_IO32  = 1,
 397         BURST_MEM32 = 2,
 398 };
 399
 400
 401 /**************************************************************************
 402  * SCSI messaage
 403  */
 404 #define MSG_COMMAND_COMPLETE 0x00
 405 #define MSG_EXTENDED         0x01
 406 #define MSG_ABORT            0x06
 407 #define MSG_NO_OPERATION     0x08
 408 #define MSG_BUS_DEVICE_RESET 0x0c
 409
 410 #define MSG_EXT_SDTR         0x01
 411
 412
 413 /**************************************************************************
 414  * Compatibility functions
 415  */
 416
 417 /* for Kernel 2.4 */
 418 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
 419 #  define scsi_register_host(template)   scsi_register_module(MODULE_SCSI_HA, template)
 420 #  define scsi_unregister_host(template) scsi_unregister_module(MODULE_SCSI_HA, template)
 421 #  define scsi_host_put(host)            scsi_unregister(host)
 422
 423 typedef void irqreturn_t;
 424 #  define IRQ_NONE      /* */
 425 #  define IRQ_HANDLED   /* */
 426 #  define IRQ_RETVAL(x) /* */
 427
 428 /* This is ad-hoc version of scsi_host_get_next() */
 429 static inline struct Scsi_Host *scsi_host_get_next(struct Scsi_Host *host)
 430 {
 431         if (host == NULL) {
 432                 return scsi_hostlist;
 433         } else {
 434                 return host->next;
 435         }
 436 }
 437
 438 /* This is ad-hoc version of scsi_host_hn_get() */
 439 static inline struct Scsi_Host *scsi_host_hn_get(unsigned short hostno)
 440 {
 441         struct Scsi_Host *host;
 442
 443         for (host = scsi_host_get_next(NULL); host != NULL;
 444              host = scsi_host_get_next(host)) {
 445                 if (host->host_no == hostno) {
 446                         break;
 447                 }
 448         }
 449
 450         return host;
 451 }
 452
 453 static void cs_error(struct pcmcia_device *handle, int func, int ret)
 454 {
 455         error_info_t err = { func, ret };
 456         pcmcia_report_error(handle, &err);
 457 }
 458
 459 /* scatter-gather table */
 460 #  define BUFFER_ADDR (SCpnt->SCp.buffer->address)
 461 #endif
 462
 463 /* for Kernel 2.6 */
 464 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
 465 /* scatter-gather table */
 466 #  define BUFFER_ADDR ((char *)((unsigned int)(SCpnt->SCp.buffer->page) + SCpnt->SCp.buffer->offset))
 467 #endif
 468
 469 #endif  /*__nsp_cs__*/
 470 /* end */