drivers/scsi/dtc.h

   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
  35 static int dtc_abort(Scsi_Cmnd *);
  36 static int dtc_biosparam(struct scsi_device *, struct block_device *,
  37                          sector_t, int*);
  38 static int dtc_detect(struct scsi_host_template *);
  39 static int dtc_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
  40 static 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_proc_info               dtc_proc_info
  92
  93 /* 15 12 11 10
  94    1001 1100 0000 0000 */
  95
  96 #define DTC_IRQS 0x9c00
  97
  98
  99 #endif /* DTC3280_H */