linux/drivers/scsi/dtc.h
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   1/*
   2 * DTC controller, taken from T128 driver by...
   3 * Copyright 1993, Drew Eckhardt
   4 *      Visionary Computing
   5 *      (Unix and Linux consulting and custom programming)
   6 *      drew@colorado.edu
   7 *      +1 (303) 440-4894
   8 *
   9 * DISTRIBUTION RELEASE 2. 
  10 *
  11 * For more information, please consult 
  12 *
  13 * 
  14 * 
  15 * and 
  16 *
  17 * NCR 5380 Family
  18 * SCSI Protocol Controller
  19 * Databook
  20 *
  21 * NCR Microelectronics
  22 * 1635 Aeroplaza Drive
  23 * Colorado Springs, CO 80916
  24 * 1+ (719) 578-3400
  25 * 1+ (800) 334-5454
  26 */
  27
  28#ifndef DTC3280_H
  29#define DTC3280_H
  30
  31#define DTCDEBUG 0
  32#define DTCDEBUG_INIT   0x1
  33#define DTCDEBUG_TRANSFER 0x2
  34
  35static int dtc_abort(Scsi_Cmnd *);
  36static int dtc_biosparam(struct scsi_device *, struct block_device *,
  37                         sector_t, int*);
  38static int dtc_detect(struct scsi_host_template *);
  39static int dtc_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
  40static int dtc_bus_reset(Scsi_Cmnd *);
  41
  42#ifndef CMD_PER_LUN
  43#define CMD_PER_LUN 2
  44#endif
  45
  46#ifndef CAN_QUEUE
  47#define CAN_QUEUE 32 
  48#endif
  49
  50#define NCR5380_implementation_fields \
  51    void __iomem *base
  52
  53#define NCR5380_local_declare() \
  54    void __iomem *base
  55
  56#define NCR5380_setup(instance) \
  57    base = ((struct NCR5380_hostdata *)(instance)->hostdata)->base
  58
  59#define DTC_address(reg) (base + DTC_5380_OFFSET + reg)
  60
  61#define dbNCR5380_read(reg)                                              \
  62    (rval=readb(DTC_address(reg)), \
  63     (((unsigned char) printk("DTC : read register %d at addr %p is: %02x\n"\
  64    , (reg), DTC_address(reg), rval)), rval ) )
  65
  66#define dbNCR5380_write(reg, value) do {                                  \
  67    printk("DTC : write %02x to register %d at address %p\n",         \
  68            (value), (reg), DTC_address(reg));     \
  69    writeb(value, DTC_address(reg));} while(0)
  70
  71
  72#if !(DTCDEBUG & DTCDEBUG_TRANSFER) 
  73#define NCR5380_read(reg) (readb(DTC_address(reg)))
  74#define NCR5380_write(reg, value) (writeb(value, DTC_address(reg)))
  75#else
  76#define NCR5380_read(reg) (readb(DTC_address(reg)))
  77#define xNCR5380_read(reg)                                              \
  78    (((unsigned char) printk("DTC : read register %d at address %p\n"\
  79    , (reg), DTC_address(reg))), readb(DTC_address(reg)))
  80
  81#define NCR5380_write(reg, value) do {                                  \
  82    printk("DTC : write %02x to register %d at address %p\n",   \
  83            (value), (reg), DTC_address(reg));  \
  84    writeb(value, DTC_address(reg));} while(0)
  85#endif
  86
  87#define NCR5380_intr                    dtc_intr
  88#define NCR5380_queue_command           dtc_queue_command
  89#define NCR5380_abort                   dtc_abort
  90#define NCR5380_bus_reset               dtc_bus_reset
  91#define NCR5380_show_info               dtc_show_info 
  92#define NCR5380_write_info              dtc_write_info 
  93
  94/* 15 12 11 10
  95   1001 1100 0000 0000 */
  96
  97#define DTC_IRQS 0x9c00
  98
  99
 100#endif /* DTC3280_H */
 101
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