/
main.cpp
527 lines (456 loc) · 15.1 KB
/
main.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
#include <algorithm>
#include <deque>
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <linux/input.h>
#include <arch/bits.hpp>
#include <arch/register.hpp>
#include <arch/io_space.hpp>
#include <async/result.hpp>
#include <boost/intrusive/list.hpp>
#include <cofiber.hpp>
#include <helix/ipc.hpp>
#include <helix/await.hpp>
#include <libevbackend.hpp>
#include <protocols/mbus/client.hpp>
#include "spec.hpp"
arch::io_space base;
namespace {
constexpr bool logPackets = false;
constexpr bool logMouse = false;
}
// --------------------------------------------
// Keyboard
// --------------------------------------------
std::shared_ptr<libevbackend::EventDevice> kbdEvntDev = std::make_shared<libevbackend::EventDevice>();
helix::UniqueIrq kbdIrq;
enum KeyboardStatus {
kStatusNormal = 1,
kStatusE0 = 2,
kStatusE1First = 3,
kStatusE1Second = 4
};
KeyboardStatus escapeStatus = kStatusNormal;
uint8_t e1Buffer;
int scanNormal(uint8_t data) {
switch(data) {
case 0x01: return KEY_ESC;
case 0x02: return KEY_1;
case 0x03: return KEY_2;
case 0x04: return KEY_3;
case 0x05: return KEY_4;
case 0x06: return KEY_5;
case 0x07: return KEY_6;
case 0x08: return KEY_7;
case 0x09: return KEY_8;
case 0x0A: return KEY_9;
case 0x0B: return KEY_0;
case 0x0C: return KEY_MINUS;
case 0x0D: return KEY_EQUAL;
case 0x0E: return KEY_BACKSPACE;
case 0x0F: return KEY_TAB;
case 0x10: return KEY_Q;
case 0x11: return KEY_W;
case 0x12: return KEY_E;
case 0x13: return KEY_R;
case 0x14: return KEY_T;
case 0x15: return KEY_Y;
case 0x16: return KEY_U;
case 0x17: return KEY_I;
case 0x18: return KEY_O;
case 0x19: return KEY_P;
case 0x1A: return KEY_LEFTBRACE;
case 0x1B: return KEY_RIGHTBRACE;
case 0x1C: return KEY_ENTER;
case 0x1D: return KEY_LEFTCTRL;
case 0x1E: return KEY_A;
case 0x1F: return KEY_S;
case 0x20: return KEY_D;
case 0x21: return KEY_F;
case 0x22: return KEY_G;
case 0x23: return KEY_H;
case 0x24: return KEY_J;
case 0x25: return KEY_K;
case 0x26: return KEY_L;
case 0x27: return KEY_SEMICOLON;
case 0x28: return KEY_APOSTROPHE;
case 0x29: return KEY_GRAVE;
case 0x2A: return KEY_LEFTSHIFT;
case 0x2B: return KEY_BACKSLASH;
case 0x2C: return KEY_Z;
case 0x2D: return KEY_X;
case 0x2E: return KEY_C;
case 0x2F: return KEY_V;
case 0x30: return KEY_B;
case 0x31: return KEY_N;
case 0x32: return KEY_M;
case 0x33: return KEY_COMMA;
case 0x34: return KEY_DOT;
case 0x35: return KEY_SLASH;
case 0x36: return KEY_RIGHTSHIFT;
case 0x37: return KEY_KPASTERISK;
case 0x38: return KEY_LEFTALT;
case 0x39: return KEY_SPACE;
case 0x3A: return KEY_CAPSLOCK;
case 0x3B: return KEY_F1;
case 0x3C: return KEY_F2;
case 0x3D: return KEY_F3;
case 0x3E: return KEY_F4;
case 0x3F: return KEY_F5;
case 0x40: return KEY_F6;
case 0x41: return KEY_F7;
case 0x42: return KEY_F8;
case 0x43: return KEY_F9;
case 0x44: return KEY_F10;
case 0x45: return KEY_NUMLOCK;
case 0x46: return KEY_SCROLLLOCK;
case 0x47: return KEY_KP7;
case 0x48: return KEY_KP8;
case 0x49: return KEY_KP9;
case 0x4A: return KEY_KPMINUS;
case 0x4B: return KEY_KP4;
case 0x4C: return KEY_KP5;
case 0x4D: return KEY_KP6;
case 0x4E: return KEY_KPPLUS;
case 0x4F: return KEY_KP1;
case 0x50: return KEY_KP2;
case 0x51: return KEY_KP3;
case 0x52: return KEY_KP0;
case 0x53: return KEY_KPDOT;
case 0x57: return KEY_F11;
case 0x58: return KEY_F12;
default: return KEY_RESERVED;
}
}
int scanE0(uint8_t data) {
switch(data) {
case 0x1C: return KEY_KPENTER;
case 0x1D: return KEY_RIGHTCTRL;
case 0x35: return KEY_KPSLASH;
case 0x37: return KEY_SYSRQ;
case 0x38: return KEY_RIGHTALT;
case 0x47: return KEY_HOME;
case 0x48: return KEY_UP;
case 0x49: return KEY_PAGEUP;
case 0x4B: return KEY_LEFT;
case 0x4D: return KEY_RIGHT;
case 0x4F: return KEY_END;
case 0x50: return KEY_DOWN;
case 0x51: return KEY_PAGEDOWN;
case 0x52: return KEY_INSERT;
case 0x53: return KEY_DELETE;
case 0x5B: return KEY_LEFTMETA;
case 0x5C: return KEY_RIGHTMETA;
case 0x5D: return KEY_COMPOSE;
default: return KEY_RESERVED;
}
}
int scanE1(uint8_t data1, uint8_t data2) {
if((data1 & 0x7F) == 0x1D && (data2 & 0X7F) == 0x45){
return KEY_PAUSE;
}else{
return KEY_RESERVED;
}
}
void handleKeyboardData(uint8_t data) {
bool pressed = !(data & 0x80);
if(escapeStatus == kStatusE1First) {
e1Buffer = data;
escapeStatus = kStatusE1Second;
}else if(escapeStatus == kStatusE1Second) {
assert((e1Buffer & 0x80) == (data & 0x80));
kbdEvntDev->emitEvent(EV_KEY, scanNormal(data & 0x7F), pressed);
kbdEvntDev->notify();
escapeStatus = kStatusNormal;
}else if(escapeStatus == kStatusE0) {
kbdEvntDev->emitEvent(EV_KEY, scanNormal(data & 0x7F), pressed);
kbdEvntDev->notify();
escapeStatus = kStatusNormal;
}else{
assert(escapeStatus == kStatusNormal);
if(data == 0xE0) {
escapeStatus = kStatusE0;
return;
}else if(data == 0xE1) {
escapeStatus = kStatusE1First;
return;
}
kbdEvntDev->emitEvent(EV_KEY, scanNormal(data & 0x7F), pressed);
kbdEvntDev->notify();
}
}
// --------------------------------------------
// Mouse
// --------------------------------------------
std::shared_ptr<libevbackend::EventDevice> mouseEvntDev = std::make_shared<libevbackend::EventDevice>();
helix::UniqueIrq mouseIrq;
enum MouseState {
kMouseData,
kMouseWaitForAck
};
enum MouseByte {
kMouseByte0,
kMouseByte1,
kMouseByte2
};
MouseState mouseState = kMouseData;
MouseByte mouseByte = kMouseByte0;
unsigned int byte0 = 0;
unsigned int byte1 = 0;
void handleMouseData(uint8_t data) {
if(mouseState == kMouseWaitForAck) {
assert(data == 0xFA);
mouseState = kMouseData;
}else{
assert(mouseState == kMouseData);
if(mouseByte == kMouseByte0) {
assert(data & 8);
byte0 = data;
mouseByte = kMouseByte1;
}else if(mouseByte == kMouseByte1) {
byte1 = data;
mouseByte = kMouseByte2;
}else{
assert(mouseByte == kMouseByte2);
unsigned int byte2 = data;
int movement_x = (int)byte1 - (int)((byte0 << 4) & 0x100);
int movement_y = (int)byte2 - (int)((byte0 << 3) & 0x100);
if(byte0 & 0xC0)
std::cout << "ps2-hid: Overflow" << std::endl;
if(logMouse) {
std::cout << "ps2-hid: Packet: " << std::hex << byte0
<< " " << byte1 << " " << byte2 << std::dec << std::endl;
std::cout << "ps2-hid: Movement: " << movement_x << ", " << movement_y << std::endl;
}
mouseEvntDev->emitEvent(EV_REL, REL_X, byte1 ? movement_x : 0);
mouseEvntDev->emitEvent(EV_REL, REL_Y, byte2 ? -movement_y : 0);
mouseEvntDev->emitEvent(EV_KEY, BTN_LEFT, byte0 & 1);
mouseEvntDev->emitEvent(EV_KEY, BTN_RIGHT, byte0 & 2);
mouseEvntDev->emitEvent(EV_KEY, BTN_MIDDLE, byte0 & 4);
mouseEvntDev->emitEvent(EV_SYN, SYN_REPORT, 0);
mouseEvntDev->notify();
mouseByte = kMouseByte0;
}
}
}
// --------------------------------------------
// Functions
// --------------------------------------------
void sendByte(uint8_t data) {
//base.store(kbd_register::command, write2ndNextByte);
base.store(kbd_register::command, 0xD4);
while(base.load(kbd_register::status) & status_bits::inBufferStatus) { };
base.store(kbd_register::data, data);
}
bool readDeviceData() {
bool avail = false;
size_t batch = 1;
uint8_t status;
while((status = base.load(kbd_register::command)) & 0x01) {
uint8_t data = base.load(kbd_register::data);
if(logPackets)
std::cout << "ps2-hid: Byte " << batch++ << ". Status: "
<< std::hex << (unsigned int)status
<< ", data: " << (unsigned int)data << std::dec << std::endl;
if(status & 0x20) {
handleMouseData(data);
}else{
handleKeyboardData(data);
}
avail = true;
}
return avail;
}
COFIBER_ROUTINE(cofiber::no_future, handleKbdIrqs(), ([=] {
uint64_t sequence = 0;
while(true) {
helix::AwaitEvent await_irq;
auto &&submit = helix::submitAwaitEvent(kbdIrq, &await_irq,
sequence, helix::Dispatcher::global());
COFIBER_AWAIT submit.async_wait();
HEL_CHECK(await_irq.error());
sequence = await_irq.sequence();
//std::cout << "ps2-hid: Keyboard IRQ" << std::endl;
readDeviceData();
// TODO: Only ack if the IRQ was from the PS/2 controller.
//HEL_CHECK(helAcknowledgeIrq(kbdIrq.getHandle(), kHelAckAcknowledge, 0));
HEL_CHECK(helAcknowledgeIrq(mouseIrq.getHandle(), kHelAckNack, sequence));
}
}))
COFIBER_ROUTINE(cofiber::no_future, handleMouseIrqs(), ([=] {
uint64_t sequence = 0;
while(true) {
helix::AwaitEvent await_irq;
auto &&submit = helix::submitAwaitEvent(mouseIrq, &await_irq,
sequence, helix::Dispatcher::global());
COFIBER_AWAIT submit.async_wait();
HEL_CHECK(await_irq.error());
sequence = await_irq.sequence();
//std::cout << "ps2-hid: Mouse IRQ" << std::endl;
readDeviceData();
// TODO: Only ack if the IRQ was from the PS/2 controller.
HEL_CHECK(helAcknowledgeIrq(mouseIrq.getHandle(), kHelAckAcknowledge, 0));
}
}))
COFIBER_ROUTINE(cofiber::no_future, runKbd(), ([=] {
kbdEvntDev->enableEvent(EV_KEY, KEY_A);
kbdEvntDev->enableEvent(EV_KEY, KEY_B);
kbdEvntDev->enableEvent(EV_KEY, KEY_C);
kbdEvntDev->enableEvent(EV_KEY, KEY_D);
kbdEvntDev->enableEvent(EV_KEY, KEY_E);
kbdEvntDev->enableEvent(EV_KEY, KEY_F);
kbdEvntDev->enableEvent(EV_KEY, KEY_G);
kbdEvntDev->enableEvent(EV_KEY, KEY_H);
kbdEvntDev->enableEvent(EV_KEY, KEY_I);
kbdEvntDev->enableEvent(EV_KEY, KEY_J);
kbdEvntDev->enableEvent(EV_KEY, KEY_K);
kbdEvntDev->enableEvent(EV_KEY, KEY_L);
kbdEvntDev->enableEvent(EV_KEY, KEY_M);
kbdEvntDev->enableEvent(EV_KEY, KEY_N);
kbdEvntDev->enableEvent(EV_KEY, KEY_O);
kbdEvntDev->enableEvent(EV_KEY, KEY_P);
kbdEvntDev->enableEvent(EV_KEY, KEY_Q);
kbdEvntDev->enableEvent(EV_KEY, KEY_R);
kbdEvntDev->enableEvent(EV_KEY, KEY_S);
kbdEvntDev->enableEvent(EV_KEY, KEY_T);
kbdEvntDev->enableEvent(EV_KEY, KEY_U);
kbdEvntDev->enableEvent(EV_KEY, KEY_V);
kbdEvntDev->enableEvent(EV_KEY, KEY_W);
kbdEvntDev->enableEvent(EV_KEY, KEY_X);
kbdEvntDev->enableEvent(EV_KEY, KEY_Y);
kbdEvntDev->enableEvent(EV_KEY, KEY_Z);
kbdEvntDev->enableEvent(EV_KEY, KEY_1);
kbdEvntDev->enableEvent(EV_KEY, KEY_2);
kbdEvntDev->enableEvent(EV_KEY, KEY_3);
kbdEvntDev->enableEvent(EV_KEY, KEY_4);
kbdEvntDev->enableEvent(EV_KEY, KEY_5);
kbdEvntDev->enableEvent(EV_KEY, KEY_6);
kbdEvntDev->enableEvent(EV_KEY, KEY_7);
kbdEvntDev->enableEvent(EV_KEY, KEY_8);
kbdEvntDev->enableEvent(EV_KEY, KEY_9);
kbdEvntDev->enableEvent(EV_KEY, KEY_0);
kbdEvntDev->enableEvent(EV_KEY, KEY_ENTER);
kbdEvntDev->enableEvent(EV_KEY, KEY_ESC);
kbdEvntDev->enableEvent(EV_KEY, KEY_BACKSPACE);
kbdEvntDev->enableEvent(EV_KEY, KEY_TAB);
kbdEvntDev->enableEvent(EV_KEY, KEY_SPACE);
kbdEvntDev->enableEvent(EV_KEY, KEY_MINUS);
kbdEvntDev->enableEvent(EV_KEY, KEY_EQUAL);
kbdEvntDev->enableEvent(EV_KEY, KEY_LEFTBRACE);
kbdEvntDev->enableEvent(EV_KEY, KEY_RIGHTBRACE);
kbdEvntDev->enableEvent(EV_KEY, KEY_BACKSLASH);
kbdEvntDev->enableEvent(EV_KEY, KEY_SEMICOLON);
kbdEvntDev->enableEvent(EV_KEY, KEY_COMMA);
kbdEvntDev->enableEvent(EV_KEY, KEY_DOT);
kbdEvntDev->enableEvent(EV_KEY, KEY_SLASH);
kbdEvntDev->enableEvent(EV_KEY, KEY_HOME);
kbdEvntDev->enableEvent(EV_KEY, KEY_PAGEUP);
kbdEvntDev->enableEvent(EV_KEY, KEY_DELETE);
kbdEvntDev->enableEvent(EV_KEY, KEY_END);
kbdEvntDev->enableEvent(EV_KEY, KEY_PAGEDOWN);
kbdEvntDev->enableEvent(EV_KEY, KEY_RIGHT);
kbdEvntDev->enableEvent(EV_KEY, KEY_LEFT);
kbdEvntDev->enableEvent(EV_KEY, KEY_DOWN);
kbdEvntDev->enableEvent(EV_KEY, KEY_UP);
kbdEvntDev->enableEvent(EV_KEY, KEY_LEFTCTRL);
kbdEvntDev->enableEvent(EV_KEY, KEY_LEFTSHIFT);
kbdEvntDev->enableEvent(EV_KEY, KEY_LEFTALT);
kbdEvntDev->enableEvent(EV_KEY, KEY_LEFTMETA);
kbdEvntDev->enableEvent(EV_KEY, KEY_RIGHTCTRL);
kbdEvntDev->enableEvent(EV_KEY, KEY_RIGHTSHIFT);
kbdEvntDev->enableEvent(EV_KEY, KEY_RIGHTALT);
kbdEvntDev->enableEvent(EV_KEY, KEY_RIGHTMETA);
// Create an mbus object for the partition.
auto root = COFIBER_AWAIT mbus::Instance::global().getRoot();
mbus::Properties descriptor{
{"unix.subsystem", mbus::StringItem{"input"}}
};
auto handler = mbus::ObjectHandler{}
.withBind([=] () -> async::result<helix::UniqueDescriptor> {
helix::UniqueLane local_lane, remote_lane;
std::tie(local_lane, remote_lane) = helix::createStream();
libevbackend::serveDevice(kbdEvntDev, std::move(local_lane));
async::promise<helix::UniqueDescriptor> promise;
promise.set_value(std::move(remote_lane));
return promise.async_get();
});
COFIBER_AWAIT root.createObject("ps2kbd", descriptor, std::move(handler));
}))
COFIBER_ROUTINE(cofiber::no_future, runMouse(), ([=] {
mouseEvntDev->enableEvent(EV_REL, REL_X);
mouseEvntDev->enableEvent(EV_REL, REL_Y);
mouseEvntDev->enableEvent(EV_KEY, BTN_LEFT);
mouseEvntDev->enableEvent(EV_KEY, BTN_RIGHT);
mouseEvntDev->enableEvent(EV_KEY, BTN_MIDDLE);
// Create an mbus object for the partition.
auto root = COFIBER_AWAIT mbus::Instance::global().getRoot();
mbus::Properties descriptor{
{"unix.subsystem", mbus::StringItem{"input"}}
};
auto handler = mbus::ObjectHandler{}
.withBind([=] () -> async::result<helix::UniqueDescriptor> {
helix::UniqueLane local_lane, remote_lane;
std::tie(local_lane, remote_lane) = helix::createStream();
libevbackend::serveDevice(mouseEvntDev, std::move(local_lane));
async::promise<helix::UniqueDescriptor> promise;
promise.set_value(std::move(remote_lane));
return promise.async_get();
});
COFIBER_AWAIT root.createObject("ps2mouse", descriptor, std::move(handler));
}))
COFIBER_ROUTINE(cofiber::no_future, pollController(), ([=] {
while(true) {
readDeviceData();
uint64_t tick;
HEL_CHECK(helGetClock(&tick));
helix::AwaitClock await_clock;
auto &&submit = helix::submitAwaitClock(&await_clock, tick + 1'000'000,
helix::Dispatcher::global());
COFIBER_AWAIT submit.async_wait();
HEL_CHECK(await_clock.error());
}
}))
int main() {
std::cout << "ps2-hid: Starting driver" << std::endl;
HelHandle kbd_handle;
HEL_CHECK(helAccessIrq(1, &kbd_handle));
kbdIrq = helix::UniqueIrq(kbd_handle);
HelHandle mouse_handle;
HEL_CHECK(helAccessIrq(12, &mouse_handle));
mouseIrq = helix::UniqueIrq(mouse_handle);
uintptr_t ports[] = { DATA, STATUS };
HelHandle handle;
HEL_CHECK(helAccessIo(ports, 2, &handle));
HEL_CHECK(helEnableIo(handle));
base = arch::global_io.subspace(DATA);
// disable both devices
base.store(kbd_register::command, disable1stPort);
base.store(kbd_register::command, disable2ndPort);
// flush the output buffer
while(base.load(kbd_register::status) & status_bits::outBufferStatus)
base.load(kbd_register::data);
// enable interrupt for second device
base.store(kbd_register::command, readByte0);
uint8_t configuration = base.load(kbd_register::data);
configuration |= 0x02;
base.store(kbd_register::command, writeByte0);
base.store(kbd_register::data, configuration);
// enable both devices
base.store(kbd_register::command, enable1stPort);
base.store(kbd_register::command, enable2ndPort);
// enables mouse response
sendByte(0xF4);
mouseState = kMouseWaitForAck;
{
async::queue_scope scope{helix::globalQueue()};
runKbd();
runMouse();
std::cout << "ps2-hid: mbus objects are ready" << std::endl;
handleKbdIrqs();
handleMouseIrqs();
// pollController();
}
helix::globalQueue()->run();
return 0;
}