LXR qemu/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
  17#define SWIM_MAX_FD            2
  18
  19typedef struct SWIMDrive SWIMDrive;
  20typedef struct SWIMBus SWIMBus;
  21typedef struct SWIMCtrl SWIMCtrl;
  22
  23#define TYPE_SWIM_DRIVE "swim-drive"
  24#define SWIM_DRIVE(obj) OBJECT_CHECK(SWIMDrive, (obj), TYPE_SWIM_DRIVE)
  25
  26struct SWIMDrive {
  27    DeviceState qdev;
  28    int32_t     unit;
  29    BlockConf   conf;
  30};
  31
  32#define TYPE_SWIM_BUS "swim-bus"
  33#define SWIM_BUS(obj) OBJECT_CHECK(SWIMBus, (obj), TYPE_SWIM_BUS)
  34
  35struct SWIMBus {
  36    BusState bus;
  37    struct SWIMCtrl *ctrl;
  38};
  39
  40typedef struct FDrive {
  41    SWIMCtrl *swimctrl;
  42    BlockBackend *blk;
  43    BlockConf *conf;
  44} FDrive;
  45
  46struct SWIMCtrl {
  47    MemoryRegion iomem;
  48    FDrive drives[SWIM_MAX_FD];
  49    int mode;
  50    /* IWM mode */
  51    int iwm_switch;
  52    uint16_t regs[8];
  53#define IWM_PH0   0
  54#define IWM_PH1   1
  55#define IWM_PH2   2
  56#define IWM_PH3   3
  57#define IWM_MTR   4
  58#define IWM_DRIVE 5
  59#define IWM_Q6    6
  60#define IWM_Q7    7
  61    uint8_t iwm_data;
  62    uint8_t iwm_mode;
  63    /* SWIM mode */
  64    uint8_t swim_phase;
  65    uint8_t swim_mode;
  66    SWIMBus bus;
  67};
  68
  69#define TYPE_SWIM "swim"
  70#define SWIM(obj) OBJECT_CHECK(SWIM, (obj), TYPE_SWIM)
  71
  72typedef struct SWIM {
  73    SysBusDevice parent_obj;
  74    SWIMCtrl     ctrl;
  75} SWIM;
  76#endif
  77