LXR linux/drivers/scsi/sun3

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