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_60HZ_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_60HZ       (1 << VIA1_IRQ_60HZ_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 *sixty_hz_timer;
49     int64_t next_sixty_hz;
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
118