1 #ifndef HW_ESCC_H
2 #define HW_ESCC_H
3 
4 #include "chardev/char-fe.h"
5 #include "chardev/char-serial.h"
6 #include "hw/sysbus.h"
7 #include "ui/input.h"
8 #include "qom/object.h"
9 
10 /* escc.c */
11 #define TYPE_ESCC "escc"
12 #define ESCC_SIZE 4
13 
14 OBJECT_DECLARE_SIMPLE_TYPE(ESCCState, ESCC)
15 
16 typedef enum {
17     escc_chn_a, escc_chn_b,
18 } ESCCChnID;
19 
20 typedef enum {
21     escc_serial, escc_kbd, escc_mouse,
22 } ESCCChnType;
23 
24 #define ESCC_SERIO_QUEUE_SIZE 256
25 
26 typedef struct {
27     uint8_t data[ESCC_SERIO_QUEUE_SIZE];
28     int rptr, wptr, count;
29 } ESCCSERIOQueue;
30 
31 #define ESCC_SERIAL_REGS 16
32 typedef struct ESCCChannelState {
33     qemu_irq irq;
34     uint32_t rxint, txint, rxint_under_svc, txint_under_svc;
35     struct ESCCChannelState *otherchn;
36     uint32_t reg;
37     uint8_t wregs[ESCC_SERIAL_REGS], rregs[ESCC_SERIAL_REGS];
38     ESCCSERIOQueue queue;
39     CharBackend chr;
40     int e0_mode, led_mode, caps_lock_mode, num_lock_mode;
41     int disabled;
42     int clock;
43     uint32_t vmstate_dummy;
44     ESCCChnID chn; /* this channel, A (base+4) or B (base+0) */
45     ESCCChnType type;
46     uint8_t rx, tx;
47     QemuInputHandlerState *hs;
48 } ESCCChannelState;
49 
50 struct ESCCState {
51     SysBusDevice parent_obj;
52 
53     struct ESCCChannelState chn[2];
54     uint32_t it_shift;
55     bool bit_swap;
56     MemoryRegion mmio;
57     uint32_t disabled;
58     uint32_t frequency;
59 };
60 
61 #endif
62