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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'Connor57877482009-12-09 21:00:41 -050012#include "ps2port.h" // kbd_command
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050013
Kevin O'Connor2018eff2008-03-12 21:27:02 -040014void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -050015kbd_setup(void)
Kevin O'Connor2018eff2008-03-12 21:27:02 -040016{
Kevin O'Connor35192dd2008-06-08 19:18:33 -040017 dprintf(3, "init keyboard\n");
Kevin O'Connor8c0e3722009-01-02 14:19:43 -050018 u16 x = offsetof(struct bios_data_area_s, kbd_buf);
Kevin O'Connor40c0e482009-09-11 02:06:02 -040019 SET_BDA(kbd_flag2, KF2_101KBD);
Kevin O'Connor2018eff2008-03-12 21:27:02 -040020 SET_BDA(kbd_buf_head, x);
21 SET_BDA(kbd_buf_tail, x);
22 SET_BDA(kbd_buf_start_offset, x);
23
24 SET_BDA(kbd_buf_end_offset
25 , x + FIELD_SIZEOF(struct bios_data_area_s, kbd_buf));
Kevin O'Connor2018eff2008-03-12 21:27:02 -040026}
27
Kevin O'Connor4b60c002008-02-25 22:29:55 -050028static u8
29enqueue_key(u8 scan_code, u8 ascii_code)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050030{
Kevin O'Connor4b60c002008-02-25 22:29:55 -050031 u16 buffer_start = GET_BDA(kbd_buf_start_offset);
32 u16 buffer_end = GET_BDA(kbd_buf_end_offset);
33
34 u16 buffer_head = GET_BDA(kbd_buf_head);
35 u16 buffer_tail = GET_BDA(kbd_buf_tail);
36
37 u16 temp_tail = buffer_tail;
38 buffer_tail += 2;
39 if (buffer_tail >= buffer_end)
40 buffer_tail = buffer_start;
41
42 if (buffer_tail == buffer_head)
43 return 0;
44
Kevin O'Connor8c0e3722009-01-02 14:19:43 -050045 SET_FARVAR(SEG_BDA, *(u8*)(temp_tail+0), ascii_code);
46 SET_FARVAR(SEG_BDA, *(u8*)(temp_tail+1), scan_code);
Kevin O'Connor4b60c002008-02-25 22:29:55 -050047 SET_BDA(kbd_buf_tail, buffer_tail);
48 return 1;
49}
50
Kevin O'Connor993f9d32008-12-16 23:47:37 -050051static void
52dequeue_key(struct bregs *regs, int incr, int extended)
Kevin O'Connor4b60c002008-02-25 22:29:55 -050053{
54 u16 buffer_head;
55 u16 buffer_tail;
56 for (;;) {
57 buffer_head = GET_BDA(kbd_buf_head);
58 buffer_tail = GET_BDA(kbd_buf_tail);
59
60 if (buffer_head != buffer_tail)
61 break;
Kevin O'Connor993f9d32008-12-16 23:47:37 -050062 if (!incr) {
63 regs->flags |= F_ZF;
64 return;
65 }
Kevin O'Connoree2efa72009-09-20 15:33:08 -040066 wait_irq();
Kevin O'Connor4b60c002008-02-25 22:29:55 -050067 }
68
Kevin O'Connor8c0e3722009-01-02 14:19:43 -050069 u8 ascii_code = GET_FARVAR(SEG_BDA, *(u8*)(buffer_head+0));
70 u8 scan_code = GET_FARVAR(SEG_BDA, *(u8*)(buffer_head+1));
Kevin O'Connor993f9d32008-12-16 23:47:37 -050071 if ((ascii_code == 0xF0 && scan_code != 0)
72 || (ascii_code == 0xE0 && !extended))
73 ascii_code = 0;
74 regs->ax = (scan_code << 8) | ascii_code;
Kevin O'Connor4b60c002008-02-25 22:29:55 -050075
Kevin O'Connor92f95b02008-12-29 20:42:40 -050076 if (!incr) {
Kevin O'Connor993f9d32008-12-16 23:47:37 -050077 regs->flags &= ~F_ZF;
Kevin O'Connor92f95b02008-12-29 20:42:40 -050078 return;
Kevin O'Connor4b60c002008-02-25 22:29:55 -050079 }
Kevin O'Connor92f95b02008-12-29 20:42:40 -050080 u16 buffer_start = GET_BDA(kbd_buf_start_offset);
81 u16 buffer_end = GET_BDA(kbd_buf_end_offset);
82
83 buffer_head += 2;
84 if (buffer_head >= buffer_end)
85 buffer_head = buffer_start;
86 SET_BDA(kbd_buf_head, buffer_head);
Kevin O'Connor4b60c002008-02-25 22:29:55 -050087}
88
89// read keyboard input
90static void
91handle_1600(struct bregs *regs)
92{
Kevin O'Connor993f9d32008-12-16 23:47:37 -050093 dequeue_key(regs, 1, 0);
Kevin O'Connor4b60c002008-02-25 22:29:55 -050094}
95
96// check keyboard status
97static void
98handle_1601(struct bregs *regs)
99{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500100 dequeue_key(regs, 0, 0);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500101}
102
103// get shift flag status
104static void
105handle_1602(struct bregs *regs)
106{
107 regs->al = GET_BDA(kbd_flag0);
108}
109
110// store key-stroke into buffer
111static void
112handle_1605(struct bregs *regs)
113{
114 regs->al = !enqueue_key(regs->ch, regs->cl);
115}
116
117// GET KEYBOARD FUNCTIONALITY
118static void
119handle_1609(struct bregs *regs)
120{
121 // bit Bochs Description
122 // 7 0 reserved
123 // 6 0 INT 16/AH=20h-22h supported (122-key keyboard support)
124 // 5 1 INT 16/AH=10h-12h supported (enhanced keyboard support)
125 // 4 1 INT 16/AH=0Ah supported
126 // 3 0 INT 16/AX=0306h supported
127 // 2 0 INT 16/AX=0305h supported
128 // 1 0 INT 16/AX=0304h supported
129 // 0 0 INT 16/AX=0300h supported
130 //
131 regs->al = 0x30;
132}
133
134// GET KEYBOARD ID
135static void
136handle_160a(struct bregs *regs)
137{
Kevin O'Connor3b897192008-07-20 10:08:59 -0400138 u8 param[2];
139 int ret = kbd_command(ATKBD_CMD_GETID, param);
140 if (ret) {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500141 regs->bx = 0;
142 return;
143 }
Kevin O'Connor3b897192008-07-20 10:08:59 -0400144 regs->bx = (param[1] << 8) | param[0];
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500145}
146
147// read MF-II keyboard input
148static void
149handle_1610(struct bregs *regs)
150{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500151 dequeue_key(regs, 1, 1);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500152}
153
154// check MF-II keyboard status
155static void
156handle_1611(struct bregs *regs)
157{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500158 dequeue_key(regs, 0, 1);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500159}
160
161// get extended keyboard status
162static void
163handle_1612(struct bregs *regs)
164{
165 regs->al = GET_BDA(kbd_flag0);
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400166 regs->ah = ((GET_BDA(kbd_flag1) & ~(KF2_RCTRL|KF2_RALT))
167 | (GET_BDA(kbd_flag2) & (KF2_RCTRL|KF2_RALT)));
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500168 //BX_DEBUG_INT16("int16: func 12 sending %04x\n",AX);
169}
170
171static void
172handle_166f(struct bregs *regs)
173{
174 if (regs->al == 0x08)
175 // unsupported, aka normal keyboard
176 regs->ah = 2;
177}
178
179// keyboard capability check called by DOS 5.0+ keyb
180static void
181handle_1692(struct bregs *regs)
182{
183 // function int16 ah=0x10-0x12 supported
184 regs->ah = 0x80;
185}
186
187// 122 keys capability check called by DOS 5.0+ keyb
188static void
189handle_16a2(struct bregs *regs)
190{
191 // don't change AH : function int16 ah=0x20-0x22 NOT supported
192}
193
194static void
Kevin O'Connor9f4f6402008-07-21 23:40:57 -0400195handle_16XX(struct bregs *regs)
196{
Kevin O'Connordfefeb52009-12-13 13:04:17 -0500197 warn_unimplemented(regs);
Kevin O'Connor9f4f6402008-07-21 23:40:57 -0400198}
199
200static void
Kevin O'Connor1ca05b02010-01-03 17:43:37 -0500201set_leds(void)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500202{
Kevin O'Connor3b897192008-07-20 10:08:59 -0400203 u8 shift_flags = (GET_BDA(kbd_flag0) >> 4) & 0x07;
Kevin O'Connor6f702dd2010-01-28 20:35:21 -0500204 u8 kbd_led = GET_BDA(kbd_flag3);
Kevin O'Connor3b897192008-07-20 10:08:59 -0400205 u8 led_flags = kbd_led & 0x07;
206 if (shift_flags == led_flags)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500207 return;
208
Kevin O'Connor3b897192008-07-20 10:08:59 -0400209 int ret = kbd_command(ATKBD_CMD_SETLEDS, &shift_flags);
210 if (ret)
211 // Error
212 return;
213 kbd_led = (kbd_led & ~0x07) | shift_flags;
Kevin O'Connor6f702dd2010-01-28 20:35:21 -0500214 SET_BDA(kbd_flag3, kbd_led);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500215}
216
217// INT 16h Keyboard Service Entry Point
Kevin O'Connor19786762008-03-05 21:09:59 -0500218void VISIBLE16
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500219handle_16(struct bregs *regs)
220{
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400221 debug_enter(regs, DEBUG_HDL_16);
Kevin O'Connor40967022008-07-21 22:23:05 -0400222 if (! CONFIG_KEYBOARD)
223 return;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500224
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400225 // XXX - set_leds should be called from irq handler
Kevin O'Connor3b897192008-07-20 10:08:59 -0400226 set_leds();
227
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500228 switch (regs->ah) {
229 case 0x00: handle_1600(regs); break;
230 case 0x01: handle_1601(regs); break;
231 case 0x02: handle_1602(regs); break;
232 case 0x05: handle_1605(regs); break;
233 case 0x09: handle_1609(regs); break;
234 case 0x0a: handle_160a(regs); break;
235 case 0x10: handle_1610(regs); break;
236 case 0x11: handle_1611(regs); break;
237 case 0x12: handle_1612(regs); break;
238 case 0x92: handle_1692(regs); break;
239 case 0xa2: handle_16a2(regs); break;
240 case 0x6f: handle_166f(regs); break;
Kevin O'Connor9f4f6402008-07-21 23:40:57 -0400241 default: handle_16XX(regs); break;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500242 }
243}
244
245#define none 0
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400246#define MNUM KF0_NUMACTIVE
247#define MCAP KF0_CAPSACTIVE
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500248
249static struct scaninfo {
250 u16 normal;
251 u16 shift;
252 u16 control;
253 u16 alt;
254 u8 lock_flags;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400255} scan_to_scanascii[] VAR16 = {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500256 { none, none, none, none, none },
257 { 0x011b, 0x011b, 0x011b, 0x0100, none }, /* escape */
258 { 0x0231, 0x0221, none, 0x7800, none }, /* 1! */
259 { 0x0332, 0x0340, 0x0300, 0x7900, none }, /* 2@ */
260 { 0x0433, 0x0423, none, 0x7a00, none }, /* 3# */
261 { 0x0534, 0x0524, none, 0x7b00, none }, /* 4$ */
262 { 0x0635, 0x0625, none, 0x7c00, none }, /* 5% */
263 { 0x0736, 0x075e, 0x071e, 0x7d00, none }, /* 6^ */
264 { 0x0837, 0x0826, none, 0x7e00, none }, /* 7& */
265 { 0x0938, 0x092a, none, 0x7f00, none }, /* 8* */
266 { 0x0a39, 0x0a28, none, 0x8000, none }, /* 9( */
267 { 0x0b30, 0x0b29, none, 0x8100, none }, /* 0) */
268 { 0x0c2d, 0x0c5f, 0x0c1f, 0x8200, none }, /* -_ */
269 { 0x0d3d, 0x0d2b, none, 0x8300, none }, /* =+ */
270 { 0x0e08, 0x0e08, 0x0e7f, none, none }, /* backspace */
271 { 0x0f09, 0x0f00, none, none, none }, /* tab */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400272 { 0x1071, 0x1051, 0x1011, 0x1000, MCAP }, /* Q */
273 { 0x1177, 0x1157, 0x1117, 0x1100, MCAP }, /* W */
274 { 0x1265, 0x1245, 0x1205, 0x1200, MCAP }, /* E */
275 { 0x1372, 0x1352, 0x1312, 0x1300, MCAP }, /* R */
276 { 0x1474, 0x1454, 0x1414, 0x1400, MCAP }, /* T */
277 { 0x1579, 0x1559, 0x1519, 0x1500, MCAP }, /* Y */
278 { 0x1675, 0x1655, 0x1615, 0x1600, MCAP }, /* U */
279 { 0x1769, 0x1749, 0x1709, 0x1700, MCAP }, /* I */
280 { 0x186f, 0x184f, 0x180f, 0x1800, MCAP }, /* O */
281 { 0x1970, 0x1950, 0x1910, 0x1900, MCAP }, /* P */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500282 { 0x1a5b, 0x1a7b, 0x1a1b, none, none }, /* [{ */
283 { 0x1b5d, 0x1b7d, 0x1b1d, none, none }, /* ]} */
284 { 0x1c0d, 0x1c0d, 0x1c0a, none, none }, /* Enter */
285 { none, none, none, none, none }, /* L Ctrl */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400286 { 0x1e61, 0x1e41, 0x1e01, 0x1e00, MCAP }, /* A */
287 { 0x1f73, 0x1f53, 0x1f13, 0x1f00, MCAP }, /* S */
288 { 0x2064, 0x2044, 0x2004, 0x2000, MCAP }, /* D */
289 { 0x2166, 0x2146, 0x2106, 0x2100, MCAP }, /* F */
290 { 0x2267, 0x2247, 0x2207, 0x2200, MCAP }, /* G */
291 { 0x2368, 0x2348, 0x2308, 0x2300, MCAP }, /* H */
292 { 0x246a, 0x244a, 0x240a, 0x2400, MCAP }, /* J */
293 { 0x256b, 0x254b, 0x250b, 0x2500, MCAP }, /* K */
294 { 0x266c, 0x264c, 0x260c, 0x2600, MCAP }, /* L */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500295 { 0x273b, 0x273a, none, none, none }, /* ;: */
296 { 0x2827, 0x2822, none, none, none }, /* '" */
297 { 0x2960, 0x297e, none, none, none }, /* `~ */
298 { none, none, none, none, none }, /* L shift */
299 { 0x2b5c, 0x2b7c, 0x2b1c, none, none }, /* |\ */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400300 { 0x2c7a, 0x2c5a, 0x2c1a, 0x2c00, MCAP }, /* Z */
301 { 0x2d78, 0x2d58, 0x2d18, 0x2d00, MCAP }, /* X */
302 { 0x2e63, 0x2e43, 0x2e03, 0x2e00, MCAP }, /* C */
303 { 0x2f76, 0x2f56, 0x2f16, 0x2f00, MCAP }, /* V */
304 { 0x3062, 0x3042, 0x3002, 0x3000, MCAP }, /* B */
305 { 0x316e, 0x314e, 0x310e, 0x3100, MCAP }, /* N */
306 { 0x326d, 0x324d, 0x320d, 0x3200, MCAP }, /* M */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500307 { 0x332c, 0x333c, none, none, none }, /* ,< */
308 { 0x342e, 0x343e, none, none, none }, /* .> */
309 { 0x352f, 0x353f, none, none, none }, /* /? */
310 { none, none, none, none, none }, /* R Shift */
311 { 0x372a, 0x372a, none, none, none }, /* * */
312 { none, none, none, none, none }, /* L Alt */
313 { 0x3920, 0x3920, 0x3920, 0x3920, none }, /* space */
314 { none, none, none, none, none }, /* caps lock */
315 { 0x3b00, 0x5400, 0x5e00, 0x6800, none }, /* F1 */
316 { 0x3c00, 0x5500, 0x5f00, 0x6900, none }, /* F2 */
317 { 0x3d00, 0x5600, 0x6000, 0x6a00, none }, /* F3 */
318 { 0x3e00, 0x5700, 0x6100, 0x6b00, none }, /* F4 */
319 { 0x3f00, 0x5800, 0x6200, 0x6c00, none }, /* F5 */
320 { 0x4000, 0x5900, 0x6300, 0x6d00, none }, /* F6 */
321 { 0x4100, 0x5a00, 0x6400, 0x6e00, none }, /* F7 */
322 { 0x4200, 0x5b00, 0x6500, 0x6f00, none }, /* F8 */
323 { 0x4300, 0x5c00, 0x6600, 0x7000, none }, /* F9 */
324 { 0x4400, 0x5d00, 0x6700, 0x7100, none }, /* F10 */
325 { none, none, none, none, none }, /* Num Lock */
326 { none, none, none, none, none }, /* Scroll Lock */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400327 { 0x4700, 0x4737, 0x7700, none, MNUM }, /* 7 Home */
328 { 0x4800, 0x4838, none, none, MNUM }, /* 8 UP */
329 { 0x4900, 0x4939, 0x8400, none, MNUM }, /* 9 PgUp */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500330 { 0x4a2d, 0x4a2d, none, none, none }, /* - */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400331 { 0x4b00, 0x4b34, 0x7300, none, MNUM }, /* 4 Left */
332 { 0x4c00, 0x4c35, none, none, MNUM }, /* 5 */
333 { 0x4d00, 0x4d36, 0x7400, none, MNUM }, /* 6 Right */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500334 { 0x4e2b, 0x4e2b, none, none, none }, /* + */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400335 { 0x4f00, 0x4f31, 0x7500, none, MNUM }, /* 1 End */
336 { 0x5000, 0x5032, none, none, MNUM }, /* 2 Down */
337 { 0x5100, 0x5133, 0x7600, none, MNUM }, /* 3 PgDn */
338 { 0x5200, 0x5230, none, none, MNUM }, /* 0 Ins */
339 { 0x5300, 0x532e, none, none, MNUM }, /* Del */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500340 { none, none, none, none, none },
341 { none, none, none, none, none },
342 { 0x565c, 0x567c, none, none, none }, /* \| */
Kevin O'Connor7c774172008-10-25 14:38:31 -0400343 { 0x8500, 0x8700, 0x8900, 0x8b00, none }, /* F11 */
344 { 0x8600, 0x8800, 0x8a00, 0x8c00, none }, /* F12 */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500345};
346
Kevin O'Connora83ff552009-01-01 21:00:59 -0500347// Handle a scancode read from the ps2 port. Note that "noinline" is
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400348// used to make sure the call to call16_simpint in process_key doesn't
Kevin O'Connora83ff552009-01-01 21:00:59 -0500349// have the overhead of this function's stack.
350static void noinline
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400351__process_key(u8 scancode)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500352{
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400353 u8 flags0 = GET_BDA(kbd_flag0);
354 u8 flags1 = GET_BDA(kbd_flag1);
355 u8 flags2 = GET_BDA(kbd_flag2);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500356
Kevin O'Connorb532d722009-09-11 17:00:31 -0400357 if (flags2 & KF2_LAST_E1) {
358 // Part of "pause" key (sequence is e1 1d 45 e1 9d c5)
359 if ((scancode & ~0x80) == 0x1d)
360 // Second key of sequence
361 return;
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400362 // Third key of sequence - clear flag.
Kevin O'Connorb532d722009-09-11 17:00:31 -0400363 flags2 &= ~KF2_LAST_E1;
364 SET_BDA(kbd_flag2, flags2);
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400365
366 if (scancode == 0xc5) {
367 // Final key in sequence.
368
369 // XXX - do actual pause.
370 }
Kevin O'Connorb532d722009-09-11 17:00:31 -0400371 return;
372 }
373
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400374 // XXX - PrtScr should cause int 0x05
375 // XXX - Ctrl+Break should cause int 0x1B
376 // XXX - SysReq should cause int 0x15/0x85
377
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500378 switch (scancode) {
379 case 0x00:
Kevin O'Connorac8df8c2008-05-24 23:46:33 -0400380 dprintf(1, "KBD: int09 handler: AL=0\n");
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500381 return;
382
383 case 0x3a: /* Caps Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400384 flags0 ^= KF0_CAPSACTIVE;
385 flags1 |= KF1_CAPS;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500386 break;
387 case 0xba: /* Caps Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400388 flags1 &= ~KF1_CAPS;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500389 break;
390
391 case 0x2a: /* L Shift press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400392 flags0 |= KF0_LSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500393 break;
394 case 0xaa: /* L Shift release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400395 flags0 &= ~KF0_LSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500396 break;
397
398 case 0x36: /* R Shift press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400399 flags0 |= KF0_RSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500400 break;
401 case 0xb6: /* R Shift release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400402 flags0 &= ~KF0_RSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500403 break;
404
405 case 0x1d: /* Ctrl press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400406 flags0 |= KF0_CTRLACTIVE;
407 if (flags2 & KF2_LAST_E0)
408 flags2 |= KF2_RCTRL;
409 else
410 flags1 |= KF1_LCTRL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500411 break;
412 case 0x9d: /* Ctrl release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400413 flags0 &= ~KF0_CTRLACTIVE;
414 if (flags2 & KF2_LAST_E0)
415 flags2 &= ~KF2_RCTRL;
416 else
417 flags1 &= ~KF1_LCTRL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500418 break;
419
420 case 0x38: /* Alt press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400421 flags0 |= KF0_ALTACTIVE;
422 if (flags2 & KF2_LAST_E0)
423 flags2 |= KF2_RALT;
424 else
425 flags1 |= KF1_LALT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500426 break;
427 case 0xb8: /* Alt release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400428 flags0 &= ~KF0_ALTACTIVE;
429 if (flags2 & KF2_LAST_E0)
430 flags2 &= ~KF2_RALT;
431 else
432 flags1 &= ~KF1_LALT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500433 break;
434
435 case 0x45: /* Num Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400436 flags1 |= KF1_NUM;
437 flags0 ^= KF0_NUMACTIVE;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500438 break;
439 case 0xc5: /* Num Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400440 flags1 &= ~KF1_NUM;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500441 break;
442
443 case 0x46: /* Scroll Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400444 flags1 |= KF1_SCROLL;
445 flags0 ^= KF0_SCROLLACTIVE;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500446 break;
447 case 0xc6: /* Scroll Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400448 flags1 &= ~KF1_SCROLL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500449 break;
450
451 case 0xe0:
452 // Extended key
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400453 flags2 |= KF2_LAST_E0;
454 SET_BDA(kbd_flag2, flags2);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500455 return;
456 case 0xe1:
Kevin O'Connorb532d722009-09-11 17:00:31 -0400457 // Start of pause key sequence
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400458 flags2 |= KF2_LAST_E1;
Kevin O'Connorb532d722009-09-11 17:00:31 -0400459 break;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500460
461 default:
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500462 if (scancode & 0x80)
463 // toss key releases
464 break;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400465 if (scancode == 0x53
466 && ((flags0 & (KF0_CTRLACTIVE|KF0_ALTACTIVE))
467 == (KF0_CTRLACTIVE|KF0_ALTACTIVE))) {
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500468 // Ctrl+alt+del - reset machine.
Kevin O'Connor885e2dd2009-01-21 19:14:20 -0500469 SET_BDA(soft_reset_flag, 0x1234);
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500470 reset_vector();
Kevin O'Connor885e2dd2009-01-21 19:14:20 -0500471 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400472 if (scancode >= ARRAY_SIZE(scan_to_scanascii)) {
Kevin O'Connorac8df8c2008-05-24 23:46:33 -0400473 dprintf(1, "KBD: int09h_handler(): unknown scancode read: 0x%02x!\n"
Kevin O'Connor438f6352008-03-30 21:46:53 -0400474 , scancode);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500475 return;
476 }
477 u8 asciicode;
478 struct scaninfo *info = &scan_to_scanascii[scancode];
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400479 if (flags0 & KF0_ALTACTIVE) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500480 asciicode = GET_GLOBAL(info->alt);
481 scancode = GET_GLOBAL(info->alt) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400482 } else if (flags0 & KF0_CTRLACTIVE) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500483 asciicode = GET_GLOBAL(info->control);
484 scancode = GET_GLOBAL(info->control) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400485 } else if (flags2 & KF2_LAST_E0
Kevin O'Connor438f6352008-03-30 21:46:53 -0400486 && scancode >= 0x47 && scancode <= 0x53) {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500487 /* extended keys handling */
488 asciicode = 0xe0;
Kevin O'Connor15157a32008-12-13 11:10:37 -0500489 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400490 } else if (flags0 & (KF0_RSHIFT|KF0_LSHIFT)) {
Kevin O'Connorb532d722009-09-11 17:00:31 -0400491 /* check if lock state should be ignored because a SHIFT
492 * key is pressed */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500493
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400494 if (flags0 & GET_GLOBAL(info->lock_flags)) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500495 asciicode = GET_GLOBAL(info->normal);
496 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500497 } else {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500498 asciicode = GET_GLOBAL(info->shift);
499 scancode = GET_GLOBAL(info->shift) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500500 }
501 } else {
502 /* check if lock is on */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400503 if (flags0 & GET_GLOBAL(info->lock_flags)) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500504 asciicode = GET_GLOBAL(info->shift);
505 scancode = GET_GLOBAL(info->shift) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500506 } else {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500507 asciicode = GET_GLOBAL(info->normal);
508 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500509 }
510 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400511 if (scancode==0 && asciicode==0)
512 dprintf(1, "KBD: scancode & asciicode are zero?\n");
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500513 enqueue_key(scancode, asciicode);
514 break;
515 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400516 flags2 &= ~KF2_LAST_E0;
517
518 SET_BDA(kbd_flag0, flags0);
519 SET_BDA(kbd_flag1, flags1);
520 SET_BDA(kbd_flag2, flags2);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500521}
522
Kevin O'Connor114592f2009-09-28 21:32:08 -0400523void
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400524process_key(u8 key)
525{
Kevin O'Connor57877482009-12-09 21:00:41 -0500526 if (!CONFIG_KEYBOARD)
527 return;
528
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400529 if (CONFIG_KBD_CALL_INT15_4F) {
530 // allow for keyboard intercept
531 u32 eax = (0x4f << 8) | key;
532 u32 flags;
533 call16_simpint(0x15, &eax, &flags);
534 if (!(flags & F_CF))
535 return;
536 key = eax;
537 }
538 __process_key(key);
539}