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