drivers/scsi/sun3_scsi.h

   1 /*
   2  * Sun3 SCSI stuff by Erik Verbruggen (erik@bigmama.xtdnet.nl)
   3  *
   4  * Sun3 DMA additions by Sam Creasey (sammy@sammy.net)
   5  *
   6  * Adapted from mac_scsinew.h:
   7  */
   8 /*
   9  * Cumana Generic NCR5380 driver defines
  10  *
  11  * Copyright 1993, Drew Eckhardt
  12  *      Visionary Computing
  13  *      (Unix and Linux consulting and custom programming)
  14  *      drew@colorado.edu
  15  *      +1 (303) 440-4894
  16  *
  17  * ALPHA RELEASE 1.
  18  *
  19  * For more information, please consult
  20  *
  21  * NCR 5380 Family
  22  * SCSI Protocol Controller
  23  * Databook
  24  *
  25  * NCR Microelectronics
  26  * 1635 Aeroplaza Drive
  27  * Colorado Springs, CO 80916
  28  * 1+ (719) 578-3400
  29  * 1+ (800) 334-5454
  30  */
  31
  32 /*
  33  * $Log: cumana_NCR5380.h,v $
  34  */
  35
  36 #ifndef SUN3_NCR5380_H
  37 #define SUN3_NCR5380_H
  38
  39 #define SUN3SCSI_PUBLIC_RELEASE 1
  40
  41 /*
  42  * Int: level 2 autovector
  43  * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
  44  */
  45 #define IRQ_SUN3_SCSI 2
  46 #define IOBASE_SUN3_SCSI 0x00140000
  47
  48 #define IOBASE_SUN3_VMESCSI 0xff200000
  49
  50 static int sun3scsi_abort(struct scsi_cmnd *);
  51 static int sun3scsi_detect (struct scsi_host_template *);
  52 static const char *sun3scsi_info (struct Scsi_Host *);
  53 static int sun3scsi_bus_reset(struct scsi_cmnd *);
  54 static int sun3scsi_queue_command(struct scsi_cmnd *,
  55                                   void (*done)(struct scsi_cmnd *));
  56 static int sun3scsi_release (struct Scsi_Host *);
  57
  58 #ifndef CMD_PER_LUN
  59 #define CMD_PER_LUN 2
  60 #endif
  61
  62 #ifndef CAN_QUEUE
  63 #define CAN_QUEUE 16
  64 #endif
  65
  66 #ifndef SG_TABLESIZE
  67 #define SG_TABLESIZE SG_NONE
  68 #endif
  69
  70 #ifndef MAX_TAGS
  71 #define MAX_TAGS 32
  72 #endif
  73
  74 #ifndef USE_TAGGED_QUEUING
  75 #define USE_TAGGED_QUEUING 1
  76 #endif
  77
  78 #include <scsi/scsicam.h>
  79
  80 #ifdef SUN3_SCSI_VME
  81 #define SUN3_SCSI_NAME "Sun3 NCR5380 VME SCSI"
  82 #else
  83 #define SUN3_SCSI_NAME "Sun3 NCR5380 SCSI"
  84 #endif
  85
  86 #ifndef HOSTS_C
  87
  88 #define NCR5380_implementation_fields \
  89     int port, ctrl
  90
  91 #define NCR5380_local_declare() \
  92         struct Scsi_Host *_instance
  93
  94 #define NCR5380_setup(instance) \
  95         _instance = instance
  96
  97 #define NCR5380_read(reg) sun3scsi_read(reg)
  98 #define NCR5380_write(reg, value) sun3scsi_write(reg, value)
  99
 100 #define NCR5380_intr sun3scsi_intr
 101 #define NCR5380_queue_command sun3scsi_queue_command
 102 #define NCR5380_bus_reset sun3scsi_bus_reset
 103 #define NCR5380_abort sun3scsi_abort
 104 #define NCR5380_proc_info sun3scsi_proc_info
 105 #define NCR5380_dma_xfer_len(i, cmd, phase) \
 106         sun3scsi_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)
 107
 108 #define NCR5380_dma_write_setup(instance, data, count) sun3scsi_dma_setup(data, count, 1)
 109 #define NCR5380_dma_read_setup(instance, data, count) sun3scsi_dma_setup(data, count, 0)
 110 #define NCR5380_dma_residual sun3scsi_dma_residual
 111
 112 #define BOARD_NORMAL    0
 113 #define BOARD_NCR53C400 1
 114
 115 /* additional registers - mainly DMA control regs */
 116 /* these start at regbase + 8 -- directly after the NCR regs */
 117 struct sun3_dma_regs {
 118         unsigned short dma_addr_hi; /* vme only */
 119         unsigned short dma_addr_lo; /* vme only */
 120         unsigned short dma_count_hi; /* vme only */
 121         unsigned short dma_count_lo; /* vme only */
 122         unsigned short udc_data; /* udc dma data reg (obio only) */
 123         unsigned short udc_addr; /* uda dma addr reg (obio only) */
 124         unsigned short fifo_data; /* fifo data reg, holds extra byte on
 125                                      odd dma reads */
 126         unsigned short fifo_count;
 127         unsigned short csr; /* control/status reg */
 128         unsigned short bpack_hi; /* vme only */
 129         unsigned short bpack_lo; /* vme only */
 130         unsigned short ivect; /* vme only */
 131         unsigned short fifo_count_hi; /* vme only */
 132 };
 133
 134 /* ucd chip specific regs - live in dvma space */
 135 struct sun3_udc_regs {
 136      unsigned short rsel; /* select regs to load */
 137      unsigned short addr_hi; /* high word of addr */
 138      unsigned short addr_lo; /* low word */
 139      unsigned short count; /* words to be xfer'd */
 140      unsigned short mode_hi; /* high word of channel mode */
 141      unsigned short mode_lo; /* low word of channel mode */
 142 };
 143
 144 /* addresses of the udc registers */
 145 #define UDC_MODE 0x38
 146 #define UDC_CSR 0x2e /* command/status */
 147 #define UDC_CHN_HI 0x26 /* chain high word */
 148 #define UDC_CHN_LO 0x22 /* chain lo word */
 149 #define UDC_CURA_HI 0x1a /* cur reg A high */
 150 #define UDC_CURA_LO 0x0a /* cur reg A low */
 151 #define UDC_CURB_HI 0x12 /* cur reg B high */
 152 #define UDC_CURB_LO 0x02 /* cur reg B low */
 153 #define UDC_MODE_HI 0x56 /* mode reg high */
 154 #define UDC_MODE_LO 0x52 /* mode reg low */
 155 #define UDC_COUNT 0x32 /* words to xfer */
 156
 157 /* some udc commands */
 158 #define UDC_RESET 0
 159 #define UDC_CHN_START 0xa0 /* start chain */
 160 #define UDC_INT_ENABLE 0x32 /* channel 1 int on */
 161
 162 /* udc mode words */
 163 #define UDC_MODE_HIWORD 0x40
 164 #define UDC_MODE_LSEND 0xc2
 165 #define UDC_MODE_LRECV 0xd2
 166
 167 /* udc reg selections */
 168 #define UDC_RSEL_SEND 0x282
 169 #define UDC_RSEL_RECV 0x182
 170
 171 /* bits in csr reg */
 172 #define CSR_DMA_ACTIVE 0x8000
 173 #define CSR_DMA_CONFLICT 0x4000
 174 #define CSR_DMA_BUSERR 0x2000
 175
 176 #define CSR_FIFO_EMPTY 0x400 /* fifo flushed? */
 177 #define CSR_SDB_INT 0x200 /* sbc interrupt pending */
 178 #define CSR_DMA_INT 0x100 /* dma interrupt pending */
 179
 180 #define CSR_LEFT 0xc0
 181 #define CSR_LEFT_3 0xc0
 182 #define CSR_LEFT_2 0x80
 183 #define CSR_LEFT_1 0x40
 184 #define CSR_PACK_ENABLE 0x20
 185
 186 #define CSR_DMA_ENABLE 0x10
 187
 188 #define CSR_SEND 0x8 /* 1 = send  0 = recv */
 189 #define CSR_FIFO 0x2 /* reset fifo */
 190 #define CSR_INTR 0x4 /* interrupt enable */
 191 #define CSR_SCSI 0x1
 192
 193 #define VME_DATA24 0x3d00
 194
 195 // debugging printk's, taken from atari_scsi.h
 196 /* Debugging printk definitions:
 197  *
 198  *  ARB  -> arbitration
 199  *  ASEN -> auto-sense
 200  *  DMA  -> DMA
 201  *  HSH  -> PIO handshake
 202  *  INF  -> information transfer
 203  *  INI  -> initialization
 204  *  INT  -> interrupt
 205  *  LNK  -> linked commands
 206  *  MAIN -> NCR5380_main() control flow
 207  *  NDAT -> no data-out phase
 208  *  NWR  -> no write commands
 209  *  PIO  -> PIO transfers
 210  *  PDMA -> pseudo DMA (unused on Atari)
 211  *  QU   -> queues
 212  *  RSL  -> reselections
 213  *  SEL  -> selections
 214  *  USL  -> usleep cpde (unused on Atari)
 215  *  LBS  -> last byte sent (unused on Atari)
 216  *  RSS  -> restarting of selections
 217  *  EXT  -> extended messages
 218  *  ABRT -> aborting and resetting
 219  *  TAG  -> queue tag handling
 220  *  MER  -> merging of consec. buffers
 221  *
 222  */
 223
 224 #include "NCR5380.h"
 225
 226 #if NDEBUG & NDEBUG_ARBITRATION
 227 #define ARB_PRINTK(format, args...) \
 228         printk(KERN_DEBUG format , ## args)
 229 #else
 230 #define ARB_PRINTK(format, args...)
 231 #endif
 232 #if NDEBUG & NDEBUG_AUTOSENSE
 233 #define ASEN_PRINTK(format, args...) \
 234         printk(KERN_DEBUG format , ## args)
 235 #else
 236 #define ASEN_PRINTK(format, args...)
 237 #endif
 238 #if NDEBUG & NDEBUG_DMA
 239 #define DMA_PRINTK(format, args...) \
 240         printk(KERN_DEBUG format , ## args)
 241 #else
 242 #define DMA_PRINTK(format, args...)
 243 #endif
 244 #if NDEBUG & NDEBUG_HANDSHAKE
 245 #define HSH_PRINTK(format, args...) \
 246         printk(KERN_DEBUG format , ## args)
 247 #else
 248 #define HSH_PRINTK(format, args...)
 249 #endif
 250 #if NDEBUG & NDEBUG_INFORMATION
 251 #define INF_PRINTK(format, args...) \
 252         printk(KERN_DEBUG format , ## args)
 253 #else
 254 #define INF_PRINTK(format, args...)
 255 #endif
 256 #if NDEBUG & NDEBUG_INIT
 257 #define INI_PRINTK(format, args...) \
 258         printk(KERN_DEBUG format , ## args)
 259 #else
 260 #define INI_PRINTK(format, args...)
 261 #endif
 262 #if NDEBUG & NDEBUG_INTR
 263 #define INT_PRINTK(format, args...) \
 264         printk(KERN_DEBUG format , ## args)
 265 #else
 266 #define INT_PRINTK(format, args...)
 267 #endif
 268 #if NDEBUG & NDEBUG_LINKED
 269 #define LNK_PRINTK(format, args...) \
 270         printk(KERN_DEBUG format , ## args)
 271 #else
 272 #define LNK_PRINTK(format, args...)
 273 #endif
 274 #if NDEBUG & NDEBUG_MAIN
 275 #define MAIN_PRINTK(format, args...) \
 276         printk(KERN_DEBUG format , ## args)
 277 #else
 278 #define MAIN_PRINTK(format, args...)
 279 #endif
 280 #if NDEBUG & NDEBUG_NO_DATAOUT
 281 #define NDAT_PRINTK(format, args...) \
 282         printk(KERN_DEBUG format , ## args)
 283 #else
 284 #define NDAT_PRINTK(format, args...)
 285 #endif
 286 #if NDEBUG & NDEBUG_NO_WRITE
 287 #define NWR_PRINTK(format, args...) \
 288         printk(KERN_DEBUG format , ## args)
 289 #else
 290 #define NWR_PRINTK(format, args...)
 291 #endif
 292 #if NDEBUG & NDEBUG_PIO
 293 #define PIO_PRINTK(format, args...) \
 294         printk(KERN_DEBUG format , ## args)
 295 #else
 296 #define PIO_PRINTK(format, args...)
 297 #endif
 298 #if NDEBUG & NDEBUG_PSEUDO_DMA
 299 #define PDMA_PRINTK(format, args...) \
 300         printk(KERN_DEBUG format , ## args)
 301 #else
 302 #define PDMA_PRINTK(format, args...)
 303 #endif
 304 #if NDEBUG & NDEBUG_QUEUES
 305 #define QU_PRINTK(format, args...) \
 306         printk(KERN_DEBUG format , ## args)
 307 #else
 308 #define QU_PRINTK(format, args...)
 309 #endif
 310 #if NDEBUG & NDEBUG_RESELECTION
 311 #define RSL_PRINTK(format, args...) \
 312         printk(KERN_DEBUG format , ## args)
 313 #else
 314 #define RSL_PRINTK(format, args...)
 315 #endif
 316 #if NDEBUG & NDEBUG_SELECTION
 317 #define SEL_PRINTK(format, args...) \
 318         printk(KERN_DEBUG format , ## args)
 319 #else
 320 #define SEL_PRINTK(format, args...)
 321 #endif
 322 #if NDEBUG & NDEBUG_USLEEP
 323 #define USL_PRINTK(format, args...) \
 324         printk(KERN_DEBUG format , ## args)
 325 #else
 326 #define USL_PRINTK(format, args...)
 327 #endif
 328 #if NDEBUG & NDEBUG_LAST_BYTE_SENT
 329 #define LBS_PRINTK(format, args...) \
 330         printk(KERN_DEBUG format , ## args)
 331 #else
 332 #define LBS_PRINTK(format, args...)
 333 #endif
 334 #if NDEBUG & NDEBUG_RESTART_SELECT
 335 #define RSS_PRINTK(format, args...) \
 336         printk(KERN_DEBUG format , ## args)
 337 #else
 338 #define RSS_PRINTK(format, args...)
 339 #endif
 340 #if NDEBUG & NDEBUG_EXTENDED
 341 #define EXT_PRINTK(format, args...) \
 342         printk(KERN_DEBUG format , ## args)
 343 #else
 344 #define EXT_PRINTK(format, args...)
 345 #endif
 346 #if NDEBUG & NDEBUG_ABORT
 347 #define ABRT_PRINTK(format, args...) \
 348         printk(KERN_DEBUG format , ## args)
 349 #else
 350 #define ABRT_PRINTK(format, args...)
 351 #endif
 352 #if NDEBUG & NDEBUG_TAGS
 353 #define TAG_PRINTK(format, args...) \
 354         printk(KERN_DEBUG format , ## args)
 355 #else
 356 #define TAG_PRINTK(format, args...)
 357 #endif
 358 #if NDEBUG & NDEBUG_MERGING
 359 #define MER_PRINTK(format, args...) \
 360         printk(KERN_DEBUG format , ## args)
 361 #else
 362 #define MER_PRINTK(format, args...)
 363 #endif
 364
 365 /* conditional macros for NCR5380_print_{,phase,status} */
 366
 367 #define NCR_PRINT(mask) \
 368         ((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)
 369
 370 #define NCR_PRINT_PHASE(mask) \
 371         ((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)
 372
 373 #define NCR_PRINT_STATUS(mask) \
 374         ((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)
 375
 376
 377
 378 #endif /* ndef HOSTS_C */
 379 #endif /* SUN3_NCR5380_H */
 380