include/hw/block/swim.h

   1 /*
   2  * QEMU Macintosh floppy disk controller emulator (SWIM)
   3  *
   4  * Copyright (c) 2014-2018 Laurent Vivier <laurent@vivier.eu>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2.  See
   7  * the COPYING file in the top-level directory.
   8  *
   9  */
  10
  11 #ifndef SWIM_H
  12 #define SWIM_H
  13
  14 #include "qemu/osdep.h"
  15 #include "hw/sysbus.h"
  16 #include "qom/object.h"
  17
  18 #define SWIM_MAX_FD            2
  19
  20 typedef struct SWIMDrive SWIMDrive;
  21 typedef struct SWIMBus SWIMBus;
  22 typedef struct SWIMCtrl SWIMCtrl;
  23
  24 #define TYPE_SWIM_DRIVE "swim-drive"
  25 DECLARE_INSTANCE_CHECKER(SWIMDrive, SWIM_DRIVE,
  26                          TYPE_SWIM_DRIVE)
  27
  28 struct SWIMDrive {
  29     DeviceState qdev;
  30     int32_t     unit;
  31     BlockConf   conf;
  32 };
  33
  34 #define TYPE_SWIM_BUS "swim-bus"
  35 DECLARE_INSTANCE_CHECKER(SWIMBus, SWIM_BUS,
  36                          TYPE_SWIM_BUS)
  37
  38 struct SWIMBus {
  39     BusState bus;
  40     struct SWIMCtrl *ctrl;
  41 };
  42
  43 typedef struct FDrive {
  44     SWIMCtrl *swimctrl;
  45     BlockBackend *blk;
  46     BlockConf *conf;
  47 } FDrive;
  48
  49 struct SWIMCtrl {
  50     MemoryRegion iomem;
  51     FDrive drives[SWIM_MAX_FD];
  52     int mode;
  53     /* IWM mode */
  54     int iwm_switch;
  55     uint16_t regs[8];
  56 #define IWM_PH0   0
  57 #define IWM_PH1   1
  58 #define IWM_PH2   2
  59 #define IWM_PH3   3
  60 #define IWM_MTR   4
  61 #define IWM_DRIVE 5
  62 #define IWM_Q6    6
  63 #define IWM_Q7    7
  64     uint8_t iwm_data;
  65     uint8_t iwm_mode;
  66     /* SWIM mode */
  67     uint8_t swim_phase;
  68     uint8_t swim_mode;
  69     SWIMBus bus;
  70 };
  71
  72 #define TYPE_SWIM "swim"
  73 typedef struct Swim Swim;
  74 DECLARE_INSTANCE_CHECKER(Swim, SWIM,
  75                          TYPE_SWIM)
  76
  77 struct Swim {
  78     SysBusDevice parent_obj;
  79     SWIMCtrl     ctrl;
  80 };
  81 #endif