drivers/scsi/pc980155.h

   1 /*
   2  *
   3  *  drivers/scsi/pc980155.h
   4  *
   5  *  PC-9801-55 SCSI host adapter driver
   6  *
   7  *  Copyright (C) 1997-2003  Kyoto University Microcomputer Club
   8  *                           (Linux/98 project)
   9  *                           Tomoharu Ugawa <ohirune@kmc.gr.jp>
  10  *
  11  */
  12
  13 #ifndef __PC980155_H
  14 #define __PC980155_H
  15
  16 #include "wd33c93.h"
  17
  18 #define REG_ADDRST (base_io)
  19 #define REG_CONTRL (base_io + 2)
  20 #define REG_CWRITE (base_io + 4)
  21 #define REG_STATRD (base_io + 4)
  22
  23 #define WD_MEMORYBANK   0x30
  24 #define WD_RESETINT     0x33
  25
  26 static inline uchar read_pc980155(const wd33c93_regs regs, uchar reg_num)
  27 {
  28         outb(reg_num, regs.SASR);
  29         return (uchar)inb(regs.SCMD);
  30 }
  31
  32 static inline void write_memorybank(const wd33c93_regs regs, uchar value)
  33 {
  34       outb(WD_MEMORYBANK, regs.SASR);
  35       outb(value, regs.SCMD);
  36 }
  37
  38 #define read_pc980155_resetint(regs) \
  39         read_pc980155((regs), WD_RESETINT)
  40 #define pc980155_int_enable(regs) \
  41         write_memorybank((regs), read_pc980155((regs), WD_MEMORYBANK) | 0x04)
  42
  43 #define pc980155_int_disable(regs) \
  44         write_memorybank((regs), read_pc980155((regs), WD_MEMORYBANK) & ~0x04)
  45
  46 #define pc980155_assert_bus_reset(regs) \
  47         write_memorybank((regs), read_pc980155((regs), WD_MEMORYBANK) | 0x02)
  48
  49 #define pc980155_negate_bus_reset(regs) \
  50         write_memorybank((regs), read_pc980155((regs), WD_MEMORYBANK) & ~0x02)
  51
  52 #endif /* __PC980155_H */