dtc.h

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/*
 * DTC controller, taken from T128 driver by...
 * Copyright 1993, Drew Eckhardt
 *  Visionary Computing
 *  (Unix and Linux consulting and custom programming)
 *  [email protected]
 *      +1 (303) 440-4894
 *
 * DISTRIBUTION RELEASE 2. 
 *
 * For more information, please consult 
 *
 * 
 * 
 * and 
 *
 * NCR 5380 Family
 * SCSI Protocol Controller
 * Databook
 *
 * NCR Microelectronics
 * 1635 Aeroplaza Drive
 * Colorado Springs, CO 80916
 * 1+ (719) 578-3400
 * 1+ (800) 334-5454
 */

#ifndef DTC3280_H
#define DTC3280_H

#define DTCDEBUG 0
#define DTCDEBUG_INIT   0x1
#define DTCDEBUG_TRANSFER 0x2

static int dtc_abort(Scsi_Cmnd *);
static int dtc_biosparam(struct scsi_device *, struct block_device *,
                 sector_t, int*);
static int dtc_detect(struct scsi_host_template *);
static int dtc_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
static int dtc_bus_reset(Scsi_Cmnd *);

#ifndef CMD_PER_LUN
#define CMD_PER_LUN 2
#endif

#ifndef CAN_QUEUE
#define CAN_QUEUE 32 
#endif

#define NCR5380_implementation_fields \
    void __iomem *base

#define NCR5380_local_declare() \
    void __iomem *base

#define NCR5380_setup(instance) \
    base = ((struct NCR5380_hostdata *)(instance)->hostdata)->base

#define DTC_address(reg) (base + DTC_5380_OFFSET + reg)

#define dbNCR5380_read(reg)                                              \
    (rval=readb(DTC_address(reg)), \
     (((unsigned char) printk("DTC : read register %d at addr %p is: %02x\n"\
    , (reg), DTC_address(reg), rval)), rval ) )

#define dbNCR5380_write(reg, value) do {                                  \
    printk("DTC : write %02x to register %d at address %p\n",         \
            (value), (reg), DTC_address(reg));     \
    writeb(value, DTC_address(reg));} while(0)


#if !(DTCDEBUG & DTCDEBUG_TRANSFER) 
#define NCR5380_read(reg) (readb(DTC_address(reg)))
#define NCR5380_write(reg, value) (writeb(value, DTC_address(reg)))
#else
#define NCR5380_read(reg) (readb(DTC_address(reg)))
#define xNCR5380_read(reg)                      \
    (((unsigned char) printk("DTC : read register %d at address %p\n"\
    , (reg), DTC_address(reg))), readb(DTC_address(reg)))

#define NCR5380_write(reg, value) do {                  \
    printk("DTC : write %02x to register %d at address %p\n",   \
        (value), (reg), DTC_address(reg));  \
    writeb(value, DTC_address(reg));} while(0)
#endif

#define NCR5380_intr            dtc_intr
#define NCR5380_queue_command       dtc_queue_command
#define NCR5380_abort           dtc_abort
#define NCR5380_bus_reset       dtc_bus_reset
#define NCR5380_proc_info       dtc_proc_info 

/* 15 12 11 10
   1001 1100 0000 0000 */

#define DTC_IRQS 0x9c00


#endif /* DTC3280_H */