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Kevin O'Connorf076a3e2008-02-25 22:25:15 -05001// 16bit code to handle keyboard requests.
2//
3// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
4// Copyright (C) 2002 MandrakeSoft S.A.
5//
Kevin O'Connorb1b7c2a2009-01-15 20:52:58 -05006// This file may be distributed under the terms of the GNU LGPLv3 license.
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05007
Kevin O'Connor9521e262008-07-04 13:04:29 -04008#include "biosvar.h" // GET_BDA
Kevin O'Connorf076a3e2008-02-25 22:25:15 -05009#include "util.h" // debug_enter
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -050010#include "config.h" // CONFIG_*
Kevin O'Connor9521e262008-07-04 13:04:29 -040011#include "bregs.h" // struct bregs
Kevin O'Connordd5a8a62010-05-01 19:59:34 -040012#include "ps2port.h" // ps2_kbd_command
13#include "usb-hid.h" // usb_kbd_command
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050014
Kevin O'Connor6704cf92010-03-13 18:51:46 -050015// Bit definitions for BDA kbd_flag[012]
16#define KF0_RSHIFT (1<<0)
17#define KF0_LSHIFT (1<<1)
18#define KF0_CTRLACTIVE (1<<2)
19#define KF0_ALTACTIVE (1<<3)
20#define KF0_SCROLLACTIVE (1<<4)
21#define KF0_NUMACTIVE (1<<5)
22#define KF0_CAPSACTIVE (1<<6)
23
24#define KF1_LCTRL (1<<0)
25#define KF1_LALT (1<<1)
26#define KF1_PAUSEACTIVE (1<<3)
27#define KF1_SCROLL (1<<4)
28#define KF1_NUM (1<<5)
29#define KF1_CAPS (1<<6)
30
31#define KF2_LAST_E1 (1<<0)
32#define KF2_LAST_E0 (1<<1)
33#define KF2_RCTRL (1<<2)
34#define KF2_RALT (1<<3)
35#define KF2_101KBD (1<<4)
36
Kevin O'Connor2018eff2008-03-12 21:27:02 -040037void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -050038kbd_setup(void)
Kevin O'Connor2018eff2008-03-12 21:27:02 -040039{
Kevin O'Connor35192dd2008-06-08 19:18:33 -040040 dprintf(3, "init keyboard\n");
Kevin O'Connor8c0e3722009-01-02 14:19:43 -050041 u16 x = offsetof(struct bios_data_area_s, kbd_buf);
Kevin O'Connor40c0e482009-09-11 02:06:02 -040042 SET_BDA(kbd_flag2, KF2_101KBD);
Kevin O'Connor2018eff2008-03-12 21:27:02 -040043 SET_BDA(kbd_buf_head, x);
44 SET_BDA(kbd_buf_tail, x);
45 SET_BDA(kbd_buf_start_offset, x);
46
47 SET_BDA(kbd_buf_end_offset
48 , x + FIELD_SIZEOF(struct bios_data_area_s, kbd_buf));
Kevin O'Connor2018eff2008-03-12 21:27:02 -040049}
50
Kevin O'Connor4b60c002008-02-25 22:29:55 -050051static u8
52enqueue_key(u8 scan_code, u8 ascii_code)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050053{
Kevin O'Connor4b60c002008-02-25 22:29:55 -050054 u16 buffer_start = GET_BDA(kbd_buf_start_offset);
55 u16 buffer_end = GET_BDA(kbd_buf_end_offset);
56
57 u16 buffer_head = GET_BDA(kbd_buf_head);
58 u16 buffer_tail = GET_BDA(kbd_buf_tail);
59
60 u16 temp_tail = buffer_tail;
61 buffer_tail += 2;
62 if (buffer_tail >= buffer_end)
63 buffer_tail = buffer_start;
64
65 if (buffer_tail == buffer_head)
66 return 0;
67
Kevin O'Connor8c0e3722009-01-02 14:19:43 -050068 SET_FARVAR(SEG_BDA, *(u8*)(temp_tail+0), ascii_code);
69 SET_FARVAR(SEG_BDA, *(u8*)(temp_tail+1), scan_code);
Kevin O'Connor4b60c002008-02-25 22:29:55 -050070 SET_BDA(kbd_buf_tail, buffer_tail);
71 return 1;
72}
73
Kevin O'Connor993f9d32008-12-16 23:47:37 -050074static void
75dequeue_key(struct bregs *regs, int incr, int extended)
Kevin O'Connor4b60c002008-02-25 22:29:55 -050076{
Kevin O'Connor68c51392010-03-13 22:23:44 -050077 yield();
Kevin O'Connor4b60c002008-02-25 22:29:55 -050078 u16 buffer_head;
79 u16 buffer_tail;
80 for (;;) {
81 buffer_head = GET_BDA(kbd_buf_head);
82 buffer_tail = GET_BDA(kbd_buf_tail);
83
84 if (buffer_head != buffer_tail)
85 break;
Kevin O'Connor993f9d32008-12-16 23:47:37 -050086 if (!incr) {
87 regs->flags |= F_ZF;
88 return;
89 }
Kevin O'Connoree2efa72009-09-20 15:33:08 -040090 wait_irq();
Kevin O'Connor4b60c002008-02-25 22:29:55 -050091 }
92
Kevin O'Connor8c0e3722009-01-02 14:19:43 -050093 u8 ascii_code = GET_FARVAR(SEG_BDA, *(u8*)(buffer_head+0));
94 u8 scan_code = GET_FARVAR(SEG_BDA, *(u8*)(buffer_head+1));
Kevin O'Connor993f9d32008-12-16 23:47:37 -050095 if ((ascii_code == 0xF0 && scan_code != 0)
96 || (ascii_code == 0xE0 && !extended))
97 ascii_code = 0;
98 regs->ax = (scan_code << 8) | ascii_code;
Kevin O'Connor4b60c002008-02-25 22:29:55 -050099
Kevin O'Connor92f95b02008-12-29 20:42:40 -0500100 if (!incr) {
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500101 regs->flags &= ~F_ZF;
Kevin O'Connor92f95b02008-12-29 20:42:40 -0500102 return;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500103 }
Kevin O'Connor92f95b02008-12-29 20:42:40 -0500104 u16 buffer_start = GET_BDA(kbd_buf_start_offset);
105 u16 buffer_end = GET_BDA(kbd_buf_end_offset);
106
107 buffer_head += 2;
108 if (buffer_head >= buffer_end)
109 buffer_head = buffer_start;
110 SET_BDA(kbd_buf_head, buffer_head);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500111}
112
Kevin O'Connordd5a8a62010-05-01 19:59:34 -0400113static inline int
114kbd_command(int command, u8 *param)
115{
116 if (usb_kbd_active())
117 return usb_kbd_command(command, param);
118 return ps2_kbd_command(command, param);
119}
120
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500121// read keyboard input
122static void
123handle_1600(struct bregs *regs)
124{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500125 dequeue_key(regs, 1, 0);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500126}
127
128// check keyboard status
129static void
130handle_1601(struct bregs *regs)
131{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500132 dequeue_key(regs, 0, 0);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500133}
134
135// get shift flag status
136static void
137handle_1602(struct bregs *regs)
138{
Kevin O'Connor68c51392010-03-13 22:23:44 -0500139 yield();
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500140 regs->al = GET_BDA(kbd_flag0);
141}
142
143// store key-stroke into buffer
144static void
145handle_1605(struct bregs *regs)
146{
147 regs->al = !enqueue_key(regs->ch, regs->cl);
148}
149
150// GET KEYBOARD FUNCTIONALITY
151static void
152handle_1609(struct bregs *regs)
153{
154 // bit Bochs Description
155 // 7 0 reserved
156 // 6 0 INT 16/AH=20h-22h supported (122-key keyboard support)
157 // 5 1 INT 16/AH=10h-12h supported (enhanced keyboard support)
158 // 4 1 INT 16/AH=0Ah supported
159 // 3 0 INT 16/AX=0306h supported
160 // 2 0 INT 16/AX=0305h supported
161 // 1 0 INT 16/AX=0304h supported
162 // 0 0 INT 16/AX=0300h supported
163 //
164 regs->al = 0x30;
165}
166
167// GET KEYBOARD ID
168static void
169handle_160a(struct bregs *regs)
170{
Kevin O'Connor3b897192008-07-20 10:08:59 -0400171 u8 param[2];
172 int ret = kbd_command(ATKBD_CMD_GETID, param);
173 if (ret) {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500174 regs->bx = 0;
175 return;
176 }
Kevin O'Connor3b897192008-07-20 10:08:59 -0400177 regs->bx = (param[1] << 8) | param[0];
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500178}
179
180// read MF-II keyboard input
181static void
182handle_1610(struct bregs *regs)
183{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500184 dequeue_key(regs, 1, 1);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500185}
186
187// check MF-II keyboard status
188static void
189handle_1611(struct bregs *regs)
190{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500191 dequeue_key(regs, 0, 1);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500192}
193
194// get extended keyboard status
195static void
196handle_1612(struct bregs *regs)
197{
Kevin O'Connor68c51392010-03-13 22:23:44 -0500198 yield();
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500199 regs->al = GET_BDA(kbd_flag0);
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400200 regs->ah = ((GET_BDA(kbd_flag1) & ~(KF2_RCTRL|KF2_RALT))
201 | (GET_BDA(kbd_flag2) & (KF2_RCTRL|KF2_RALT)));
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500202 //BX_DEBUG_INT16("int16: func 12 sending %04x\n",AX);
203}
204
205static void
206handle_166f(struct bregs *regs)
207{
208 if (regs->al == 0x08)
209 // unsupported, aka normal keyboard
210 regs->ah = 2;
211}
212
213// keyboard capability check called by DOS 5.0+ keyb
214static void
215handle_1692(struct bregs *regs)
216{
217 // function int16 ah=0x10-0x12 supported
218 regs->ah = 0x80;
219}
220
221// 122 keys capability check called by DOS 5.0+ keyb
222static void
223handle_16a2(struct bregs *regs)
224{
225 // don't change AH : function int16 ah=0x20-0x22 NOT supported
226}
227
228static void
Kevin O'Connor9f4f6402008-07-21 23:40:57 -0400229handle_16XX(struct bregs *regs)
230{
Kevin O'Connordfefeb52009-12-13 13:04:17 -0500231 warn_unimplemented(regs);
Kevin O'Connor9f4f6402008-07-21 23:40:57 -0400232}
233
234static void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500235set_leds(void)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500236{
Kevin O'Connor3b897192008-07-20 10:08:59 -0400237 u8 shift_flags = (GET_BDA(kbd_flag0) >> 4) & 0x07;
Kevin O'Connor6704cf92010-03-13 18:51:46 -0500238 u8 kbd_led = GET_BDA(kbd_led);
Kevin O'Connor3b897192008-07-20 10:08:59 -0400239 u8 led_flags = kbd_led & 0x07;
240 if (shift_flags == led_flags)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500241 return;
242
Kevin O'Connor3b897192008-07-20 10:08:59 -0400243 int ret = kbd_command(ATKBD_CMD_SETLEDS, &shift_flags);
244 if (ret)
245 // Error
246 return;
247 kbd_led = (kbd_led & ~0x07) | shift_flags;
Kevin O'Connor6704cf92010-03-13 18:51:46 -0500248 SET_BDA(kbd_led, kbd_led);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500249}
250
251// INT 16h Keyboard Service Entry Point
Kevin O'Connor19786762008-03-05 21:09:59 -0500252void VISIBLE16
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500253handle_16(struct bregs *regs)
254{
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400255 debug_enter(regs, DEBUG_HDL_16);
Kevin O'Connor40967022008-07-21 22:23:05 -0400256 if (! CONFIG_KEYBOARD)
257 return;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500258
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400259 // XXX - set_leds should be called from irq handler
Kevin O'Connor3b897192008-07-20 10:08:59 -0400260 set_leds();
261
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500262 switch (regs->ah) {
263 case 0x00: handle_1600(regs); break;
264 case 0x01: handle_1601(regs); break;
265 case 0x02: handle_1602(regs); break;
266 case 0x05: handle_1605(regs); break;
267 case 0x09: handle_1609(regs); break;
268 case 0x0a: handle_160a(regs); break;
269 case 0x10: handle_1610(regs); break;
270 case 0x11: handle_1611(regs); break;
271 case 0x12: handle_1612(regs); break;
272 case 0x92: handle_1692(regs); break;
273 case 0xa2: handle_16a2(regs); break;
274 case 0x6f: handle_166f(regs); break;
Kevin O'Connor9f4f6402008-07-21 23:40:57 -0400275 default: handle_16XX(regs); break;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500276 }
277}
278
279#define none 0
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400280#define MNUM KF0_NUMACTIVE
281#define MCAP KF0_CAPSACTIVE
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500282
283static struct scaninfo {
284 u16 normal;
285 u16 shift;
286 u16 control;
287 u16 alt;
288 u8 lock_flags;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400289} scan_to_scanascii[] VAR16 = {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500290 { none, none, none, none, none },
291 { 0x011b, 0x011b, 0x011b, 0x0100, none }, /* escape */
292 { 0x0231, 0x0221, none, 0x7800, none }, /* 1! */
293 { 0x0332, 0x0340, 0x0300, 0x7900, none }, /* 2@ */
294 { 0x0433, 0x0423, none, 0x7a00, none }, /* 3# */
295 { 0x0534, 0x0524, none, 0x7b00, none }, /* 4$ */
296 { 0x0635, 0x0625, none, 0x7c00, none }, /* 5% */
297 { 0x0736, 0x075e, 0x071e, 0x7d00, none }, /* 6^ */
298 { 0x0837, 0x0826, none, 0x7e00, none }, /* 7& */
299 { 0x0938, 0x092a, none, 0x7f00, none }, /* 8* */
300 { 0x0a39, 0x0a28, none, 0x8000, none }, /* 9( */
301 { 0x0b30, 0x0b29, none, 0x8100, none }, /* 0) */
302 { 0x0c2d, 0x0c5f, 0x0c1f, 0x8200, none }, /* -_ */
303 { 0x0d3d, 0x0d2b, none, 0x8300, none }, /* =+ */
304 { 0x0e08, 0x0e08, 0x0e7f, none, none }, /* backspace */
305 { 0x0f09, 0x0f00, none, none, none }, /* tab */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400306 { 0x1071, 0x1051, 0x1011, 0x1000, MCAP }, /* Q */
307 { 0x1177, 0x1157, 0x1117, 0x1100, MCAP }, /* W */
308 { 0x1265, 0x1245, 0x1205, 0x1200, MCAP }, /* E */
309 { 0x1372, 0x1352, 0x1312, 0x1300, MCAP }, /* R */
310 { 0x1474, 0x1454, 0x1414, 0x1400, MCAP }, /* T */
311 { 0x1579, 0x1559, 0x1519, 0x1500, MCAP }, /* Y */
312 { 0x1675, 0x1655, 0x1615, 0x1600, MCAP }, /* U */
313 { 0x1769, 0x1749, 0x1709, 0x1700, MCAP }, /* I */
314 { 0x186f, 0x184f, 0x180f, 0x1800, MCAP }, /* O */
315 { 0x1970, 0x1950, 0x1910, 0x1900, MCAP }, /* P */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500316 { 0x1a5b, 0x1a7b, 0x1a1b, none, none }, /* [{ */
317 { 0x1b5d, 0x1b7d, 0x1b1d, none, none }, /* ]} */
318 { 0x1c0d, 0x1c0d, 0x1c0a, none, none }, /* Enter */
319 { none, none, none, none, none }, /* L Ctrl */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400320 { 0x1e61, 0x1e41, 0x1e01, 0x1e00, MCAP }, /* A */
321 { 0x1f73, 0x1f53, 0x1f13, 0x1f00, MCAP }, /* S */
322 { 0x2064, 0x2044, 0x2004, 0x2000, MCAP }, /* D */
323 { 0x2166, 0x2146, 0x2106, 0x2100, MCAP }, /* F */
324 { 0x2267, 0x2247, 0x2207, 0x2200, MCAP }, /* G */
325 { 0x2368, 0x2348, 0x2308, 0x2300, MCAP }, /* H */
326 { 0x246a, 0x244a, 0x240a, 0x2400, MCAP }, /* J */
327 { 0x256b, 0x254b, 0x250b, 0x2500, MCAP }, /* K */
328 { 0x266c, 0x264c, 0x260c, 0x2600, MCAP }, /* L */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500329 { 0x273b, 0x273a, none, none, none }, /* ;: */
330 { 0x2827, 0x2822, none, none, none }, /* '" */
331 { 0x2960, 0x297e, none, none, none }, /* `~ */
332 { none, none, none, none, none }, /* L shift */
333 { 0x2b5c, 0x2b7c, 0x2b1c, none, none }, /* |\ */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400334 { 0x2c7a, 0x2c5a, 0x2c1a, 0x2c00, MCAP }, /* Z */
335 { 0x2d78, 0x2d58, 0x2d18, 0x2d00, MCAP }, /* X */
336 { 0x2e63, 0x2e43, 0x2e03, 0x2e00, MCAP }, /* C */
337 { 0x2f76, 0x2f56, 0x2f16, 0x2f00, MCAP }, /* V */
338 { 0x3062, 0x3042, 0x3002, 0x3000, MCAP }, /* B */
339 { 0x316e, 0x314e, 0x310e, 0x3100, MCAP }, /* N */
340 { 0x326d, 0x324d, 0x320d, 0x3200, MCAP }, /* M */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500341 { 0x332c, 0x333c, none, none, none }, /* ,< */
342 { 0x342e, 0x343e, none, none, none }, /* .> */
343 { 0x352f, 0x353f, none, none, none }, /* /? */
344 { none, none, none, none, none }, /* R Shift */
345 { 0x372a, 0x372a, none, none, none }, /* * */
346 { none, none, none, none, none }, /* L Alt */
347 { 0x3920, 0x3920, 0x3920, 0x3920, none }, /* space */
348 { none, none, none, none, none }, /* caps lock */
349 { 0x3b00, 0x5400, 0x5e00, 0x6800, none }, /* F1 */
350 { 0x3c00, 0x5500, 0x5f00, 0x6900, none }, /* F2 */
351 { 0x3d00, 0x5600, 0x6000, 0x6a00, none }, /* F3 */
352 { 0x3e00, 0x5700, 0x6100, 0x6b00, none }, /* F4 */
353 { 0x3f00, 0x5800, 0x6200, 0x6c00, none }, /* F5 */
354 { 0x4000, 0x5900, 0x6300, 0x6d00, none }, /* F6 */
355 { 0x4100, 0x5a00, 0x6400, 0x6e00, none }, /* F7 */
356 { 0x4200, 0x5b00, 0x6500, 0x6f00, none }, /* F8 */
357 { 0x4300, 0x5c00, 0x6600, 0x7000, none }, /* F9 */
358 { 0x4400, 0x5d00, 0x6700, 0x7100, none }, /* F10 */
359 { none, none, none, none, none }, /* Num Lock */
360 { none, none, none, none, none }, /* Scroll Lock */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400361 { 0x4700, 0x4737, 0x7700, none, MNUM }, /* 7 Home */
362 { 0x4800, 0x4838, none, none, MNUM }, /* 8 UP */
363 { 0x4900, 0x4939, 0x8400, none, MNUM }, /* 9 PgUp */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500364 { 0x4a2d, 0x4a2d, none, none, none }, /* - */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400365 { 0x4b00, 0x4b34, 0x7300, none, MNUM }, /* 4 Left */
366 { 0x4c00, 0x4c35, none, none, MNUM }, /* 5 */
367 { 0x4d00, 0x4d36, 0x7400, none, MNUM }, /* 6 Right */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500368 { 0x4e2b, 0x4e2b, none, none, none }, /* + */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400369 { 0x4f00, 0x4f31, 0x7500, none, MNUM }, /* 1 End */
370 { 0x5000, 0x5032, none, none, MNUM }, /* 2 Down */
371 { 0x5100, 0x5133, 0x7600, none, MNUM }, /* 3 PgDn */
372 { 0x5200, 0x5230, none, none, MNUM }, /* 0 Ins */
373 { 0x5300, 0x532e, none, none, MNUM }, /* Del */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500374 { none, none, none, none, none },
375 { none, none, none, none, none },
376 { 0x565c, 0x567c, none, none, none }, /* \| */
Kevin O'Connor7c774172008-10-25 14:38:31 -0400377 { 0x8500, 0x8700, 0x8900, 0x8b00, none }, /* F11 */
378 { 0x8600, 0x8800, 0x8a00, 0x8c00, none }, /* F12 */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500379};
380
Kevin O'Connora83ff552009-01-01 21:00:59 -0500381// Handle a scancode read from the ps2 port. Note that "noinline" is
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400382// used to make sure the call to call16_simpint in process_key doesn't
Kevin O'Connora83ff552009-01-01 21:00:59 -0500383// have the overhead of this function's stack.
384static void noinline
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400385__process_key(u8 scancode)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500386{
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400387 u8 flags0 = GET_BDA(kbd_flag0);
388 u8 flags1 = GET_BDA(kbd_flag1);
389 u8 flags2 = GET_BDA(kbd_flag2);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500390
Kevin O'Connorb532d722009-09-11 17:00:31 -0400391 if (flags2 & KF2_LAST_E1) {
392 // Part of "pause" key (sequence is e1 1d 45 e1 9d c5)
393 if ((scancode & ~0x80) == 0x1d)
394 // Second key of sequence
395 return;
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400396 // Third key of sequence - clear flag.
Kevin O'Connorb532d722009-09-11 17:00:31 -0400397 flags2 &= ~KF2_LAST_E1;
398 SET_BDA(kbd_flag2, flags2);
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400399
400 if (scancode == 0xc5) {
401 // Final key in sequence.
402
403 // XXX - do actual pause.
404 }
Kevin O'Connorb532d722009-09-11 17:00:31 -0400405 return;
406 }
407
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400408 // XXX - PrtScr should cause int 0x05
409 // XXX - Ctrl+Break should cause int 0x1B
410 // XXX - SysReq should cause int 0x15/0x85
411
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500412 switch (scancode) {
413 case 0x00:
Kevin O'Connorac8df8c2008-05-24 23:46:33 -0400414 dprintf(1, "KBD: int09 handler: AL=0\n");
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500415 return;
416
417 case 0x3a: /* Caps Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400418 flags0 ^= KF0_CAPSACTIVE;
419 flags1 |= KF1_CAPS;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500420 break;
421 case 0xba: /* Caps Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400422 flags1 &= ~KF1_CAPS;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500423 break;
424
425 case 0x2a: /* L Shift press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400426 flags0 |= KF0_LSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500427 break;
428 case 0xaa: /* L Shift release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400429 flags0 &= ~KF0_LSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500430 break;
431
432 case 0x36: /* R Shift press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400433 flags0 |= KF0_RSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500434 break;
435 case 0xb6: /* R Shift release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400436 flags0 &= ~KF0_RSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500437 break;
438
439 case 0x1d: /* Ctrl press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400440 flags0 |= KF0_CTRLACTIVE;
441 if (flags2 & KF2_LAST_E0)
442 flags2 |= KF2_RCTRL;
443 else
444 flags1 |= KF1_LCTRL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500445 break;
446 case 0x9d: /* Ctrl release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400447 flags0 &= ~KF0_CTRLACTIVE;
448 if (flags2 & KF2_LAST_E0)
449 flags2 &= ~KF2_RCTRL;
450 else
451 flags1 &= ~KF1_LCTRL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500452 break;
453
454 case 0x38: /* Alt press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400455 flags0 |= KF0_ALTACTIVE;
456 if (flags2 & KF2_LAST_E0)
457 flags2 |= KF2_RALT;
458 else
459 flags1 |= KF1_LALT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500460 break;
461 case 0xb8: /* Alt release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400462 flags0 &= ~KF0_ALTACTIVE;
463 if (flags2 & KF2_LAST_E0)
464 flags2 &= ~KF2_RALT;
465 else
466 flags1 &= ~KF1_LALT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500467 break;
468
469 case 0x45: /* Num Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400470 flags1 |= KF1_NUM;
471 flags0 ^= KF0_NUMACTIVE;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500472 break;
473 case 0xc5: /* Num Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400474 flags1 &= ~KF1_NUM;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500475 break;
476
477 case 0x46: /* Scroll Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400478 flags1 |= KF1_SCROLL;
479 flags0 ^= KF0_SCROLLACTIVE;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500480 break;
481 case 0xc6: /* Scroll Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400482 flags1 &= ~KF1_SCROLL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500483 break;
484
485 case 0xe0:
486 // Extended key
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400487 flags2 |= KF2_LAST_E0;
488 SET_BDA(kbd_flag2, flags2);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500489 return;
490 case 0xe1:
Kevin O'Connorb532d722009-09-11 17:00:31 -0400491 // Start of pause key sequence
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400492 flags2 |= KF2_LAST_E1;
Kevin O'Connorb532d722009-09-11 17:00:31 -0400493 break;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500494
495 default:
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500496 if (scancode & 0x80)
497 // toss key releases
498 break;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400499 if (scancode == 0x53
500 && ((flags0 & (KF0_CTRLACTIVE|KF0_ALTACTIVE))
501 == (KF0_CTRLACTIVE|KF0_ALTACTIVE))) {
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500502 // Ctrl+alt+del - reset machine.
Kevin O'Connor885e2dd2009-01-21 19:14:20 -0500503 SET_BDA(soft_reset_flag, 0x1234);
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500504 reset_vector();
Kevin O'Connor885e2dd2009-01-21 19:14:20 -0500505 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400506 if (scancode >= ARRAY_SIZE(scan_to_scanascii)) {
Kevin O'Connorac8df8c2008-05-24 23:46:33 -0400507 dprintf(1, "KBD: int09h_handler(): unknown scancode read: 0x%02x!\n"
Kevin O'Connor438f6352008-03-30 21:46:53 -0400508 , scancode);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500509 return;
510 }
511 u8 asciicode;
512 struct scaninfo *info = &scan_to_scanascii[scancode];
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400513 if (flags0 & KF0_ALTACTIVE) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500514 asciicode = GET_GLOBAL(info->alt);
515 scancode = GET_GLOBAL(info->alt) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400516 } else if (flags0 & KF0_CTRLACTIVE) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500517 asciicode = GET_GLOBAL(info->control);
518 scancode = GET_GLOBAL(info->control) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400519 } else if (flags2 & KF2_LAST_E0
Kevin O'Connor438f6352008-03-30 21:46:53 -0400520 && scancode >= 0x47 && scancode <= 0x53) {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500521 /* extended keys handling */
522 asciicode = 0xe0;
Kevin O'Connor15157a32008-12-13 11:10:37 -0500523 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400524 } else if (flags0 & (KF0_RSHIFT|KF0_LSHIFT)) {
Kevin O'Connorb532d722009-09-11 17:00:31 -0400525 /* check if lock state should be ignored because a SHIFT
526 * key is pressed */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500527
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400528 if (flags0 & GET_GLOBAL(info->lock_flags)) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500529 asciicode = GET_GLOBAL(info->normal);
530 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500531 } else {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500532 asciicode = GET_GLOBAL(info->shift);
533 scancode = GET_GLOBAL(info->shift) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500534 }
535 } else {
536 /* check if lock is on */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400537 if (flags0 & GET_GLOBAL(info->lock_flags)) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500538 asciicode = GET_GLOBAL(info->shift);
539 scancode = GET_GLOBAL(info->shift) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500540 } else {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500541 asciicode = GET_GLOBAL(info->normal);
542 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500543 }
544 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400545 if (scancode==0 && asciicode==0)
546 dprintf(1, "KBD: scancode & asciicode are zero?\n");
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500547 enqueue_key(scancode, asciicode);
548 break;
549 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400550 flags2 &= ~KF2_LAST_E0;
551
552 SET_BDA(kbd_flag0, flags0);
553 SET_BDA(kbd_flag1, flags1);
554 SET_BDA(kbd_flag2, flags2);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500555}
556
Kevin O'Connor114592f2009-09-28 21:32:08 -0400557void
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400558process_key(u8 key)
559{
Kevin O'Connor57877482009-12-09 21:00:41 -0500560 if (!CONFIG_KEYBOARD)
561 return;
562
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400563 if (CONFIG_KBD_CALL_INT15_4F) {
564 // allow for keyboard intercept
565 u32 eax = (0x4f << 8) | key;
566 u32 flags;
567 call16_simpint(0x15, &eax, &flags);
568 if (!(flags & F_CF))
569 return;
570 key = eax;
571 }
572 __process_key(key);
573}