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drivers/scsi/dtc.h 2.58 KB
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1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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  /*
   * DTC controller, taken from T128 driver by...
   * Copyright 1993, Drew Eckhardt
   *	Visionary Computing
   *	(Unix and Linux consulting and custom programming)
   *	drew@colorado.edu
   *      +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
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  #define DTCDEBUG 0
  #define DTCDEBUG_INIT	0x1
  #define DTCDEBUG_TRANSFER 0x2
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  static int dtc_abort(Scsi_Cmnd *);
  static int dtc_biosparam(struct scsi_device *, struct block_device *,
  		         sector_t, int*);
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  static int dtc_detect(struct scsi_host_template *);
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  static int dtc_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
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  static int dtc_bus_reset(Scsi_Cmnd *);
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  #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
  "\
      , (reg), DTC_address(reg), rval)), rval ) )
  
  #define dbNCR5380_write(reg, value) do {                                  \
      printk("DTC : write %02x to register %d at address %p
  ",         \
              (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
  "\
      , (reg), DTC_address(reg))), readb(DTC_address(reg)))
  
  #define NCR5380_write(reg, value) do {					\
      printk("DTC : write %02x to register %d at address %p
  ", 	\
  	    (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
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  #define NCR5380_proc_info		dtc_proc_info 
  
  /* 15 12 11 10
     1001 1100 0000 0000 */
  
  #define DTC_IRQS 0x9c00
  
  
  #endif /* DTC3280_H */