include/hw/misc/mac_via.h

   1 /*
   2  *
   3  * Copyright (c) 2011-2018 Laurent Vivier
   4  *
   5  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   6  * See the COPYING file in the top-level directory.
   7  */
   8
   9 #ifndef HW_MISC_MAC_VIA_H
  10 #define HW_MISC_MAC_VIA_H
  11
  12 #include "exec/memory.h"
  13 #include "hw/sysbus.h"
  14 #include "hw/misc/mos6522.h"
  15 #include "qom/object.h"
  16
  17
  18 /* VIA 1 */
  19 #define VIA1_IRQ_ONE_SECOND_BIT 0
  20 #define VIA1_IRQ_VBLANK_BIT     1
  21 #define VIA1_IRQ_ADB_READY_BIT  2
  22 #define VIA1_IRQ_ADB_DATA_BIT   3
  23 #define VIA1_IRQ_ADB_CLOCK_BIT  4
  24
  25 #define VIA1_IRQ_NB             8
  26
  27 #define VIA1_IRQ_ONE_SECOND (1 << VIA1_IRQ_ONE_SECOND_BIT)
  28 #define VIA1_IRQ_VBLANK     (1 << VIA1_IRQ_VBLANK_BIT)
  29 #define VIA1_IRQ_ADB_READY  (1 << VIA1_IRQ_ADB_READY_BIT)
  30 #define VIA1_IRQ_ADB_DATA   (1 << VIA1_IRQ_ADB_DATA_BIT)
  31 #define VIA1_IRQ_ADB_CLOCK  (1 << VIA1_IRQ_ADB_CLOCK_BIT)
  32
  33
  34 #define TYPE_MOS6522_Q800_VIA1 "mos6522-q800-via1"
  35 OBJECT_DECLARE_SIMPLE_TYPE(MOS6522Q800VIA1State, MOS6522_Q800_VIA1)
  36
  37 struct MOS6522Q800VIA1State {
  38     /*< private >*/
  39     MOS6522State parent_obj;
  40
  41     qemu_irq irqs[VIA1_IRQ_NB];
  42     uint8_t last_b;
  43     uint8_t PRAM[256];
  44
  45     /* external timers */
  46     QEMUTimer *one_second_timer;
  47     int64_t next_second;
  48     QEMUTimer *VBL_timer;
  49     int64_t next_VBL;
  50 };
  51
  52
  53 /* VIA 2 */
  54 #define VIA2_IRQ_SCSI_DATA_BIT  0
  55 #define VIA2_IRQ_SLOT_BIT       1
  56 #define VIA2_IRQ_UNUSED_BIT     2
  57 #define VIA2_IRQ_SCSI_BIT       3
  58 #define VIA2_IRQ_ASC_BIT        4
  59
  60 #define VIA2_IRQ_NB             8
  61
  62 #define VIA2_IRQ_SCSI_DATA  (1 << VIA2_IRQ_SCSI_DATA_BIT)
  63 #define VIA2_IRQ_SLOT       (1 << VIA2_IRQ_SLOT_BIT)
  64 #define VIA2_IRQ_UNUSED     (1 << VIA2_IRQ_SCSI_BIT)
  65 #define VIA2_IRQ_SCSI       (1 << VIA2_IRQ_UNUSED_BIT)
  66 #define VIA2_IRQ_ASC        (1 << VIA2_IRQ_ASC_BIT)
  67
  68 #define TYPE_MOS6522_Q800_VIA2 "mos6522-q800-via2"
  69 OBJECT_DECLARE_SIMPLE_TYPE(MOS6522Q800VIA2State, MOS6522_Q800_VIA2)
  70
  71 struct MOS6522Q800VIA2State {
  72     /*< private >*/
  73     MOS6522State parent_obj;
  74 };
  75
  76
  77 #define TYPE_MAC_VIA "mac_via"
  78 OBJECT_DECLARE_SIMPLE_TYPE(MacVIAState, MAC_VIA)
  79
  80 struct MacVIAState {
  81     SysBusDevice busdev;
  82
  83     VMChangeStateEntry *vmstate;
  84
  85     /* MMIO */
  86     MemoryRegion mmio;
  87     MemoryRegion via1mem;
  88     MemoryRegion via2mem;
  89
  90     /* VIAs */
  91     MOS6522Q800VIA1State mos6522_via1;
  92     MOS6522Q800VIA2State mos6522_via2;
  93
  94     /* RTC */
  95     uint32_t tick_offset;
  96
  97     uint8_t data_out;
  98     int data_out_cnt;
  99     uint8_t data_in;
 100     uint8_t data_in_cnt;
 101     uint8_t cmd;
 102     int wprotect;
 103     int alt;
 104     BlockBackend *blk;
 105
 106     /* ADB */
 107     ADBBusState adb_bus;
 108     qemu_irq adb_data_ready;
 109     int adb_data_in_size;
 110     int adb_data_in_index;
 111     int adb_data_out_index;
 112     uint8_t adb_data_in[128];
 113     uint8_t adb_data_out[16];
 114     uint8_t adb_autopoll_cmd;
 115 };
 116
 117 #endif