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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'Connorf54c1502008-06-14 15:56:16 -040011#include "pic.h" // eoi_pic1
Kevin O'Connor9521e262008-07-04 13:04:29 -040012#include "bregs.h" // struct bregs
Kevin O'Connor3b897192008-07-20 10:08:59 -040013#include "ps2port.h" // i8042_flush
Kevin O'Connorf076a3e2008-02-25 22:25:15 -050014
Kevin O'Connor40c0e482009-09-11 02:06:02 -040015// 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)
Kevin O'Connoree2efa72009-09-20 15:33:08 -040026#define KF1_PAUSEACTIVE (1<<3)
Kevin O'Connor40c0e482009-09-11 02:06:02 -040027#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 -040037static void
38keyboard_init()
39{
Kevin O'Connor2018eff2008-03-12 21:27:02 -040040 /* flush incoming keys */
Kevin O'Connor3b897192008-07-20 10:08:59 -040041 int ret = i8042_flush();
42 if (ret)
43 return;
44
45 // Controller self-test.
46 u8 param[2];
47 ret = i8042_command(I8042_CMD_CTL_TEST, param);
48 if (ret)
49 return;
50 if (param[0] != 0x55) {
Kevin O'Connorf13b0082008-08-17 11:26:42 -040051 dprintf(1, "i8042 self test failed (got %x not 0x55)\n", param[0]);
Kevin O'Connor3b897192008-07-20 10:08:59 -040052 return;
Kevin O'Connor06ad44e2008-04-05 19:30:02 -040053 }
Kevin O'Connor2018eff2008-03-12 21:27:02 -040054
Kevin O'Connor3b897192008-07-20 10:08:59 -040055 // Controller keyboard test.
56 ret = i8042_command(I8042_CMD_KBD_TEST, param);
57 if (ret)
58 return;
59 if (param[0] != 0x00) {
Kevin O'Connorf13b0082008-08-17 11:26:42 -040060 dprintf(1, "i8042 keyboard test failed (got %x not 0x00)\n", param[0]);
Kevin O'Connor3b897192008-07-20 10:08:59 -040061 return;
62 }
Kevin O'Connor2018eff2008-03-12 21:27:02 -040063
Kevin O'Connor3b897192008-07-20 10:08:59 -040064 // Enable keyboard and mouse ports.
65 ret = i8042_command(I8042_CMD_KBD_ENABLE, NULL);
66 if (ret)
67 return;
68 ret = i8042_command(I8042_CMD_AUX_ENABLE, NULL);
69 if (ret)
70 return;
Kevin O'Connor2018eff2008-03-12 21:27:02 -040071
Kevin O'Connor2018eff2008-03-12 21:27:02 -040072
73 /* ------------------- keyboard side ------------------------*/
Kevin O'Connor3b897192008-07-20 10:08:59 -040074 /* reset keyboard and self test (keyboard side) */
75 ret = kbd_command(ATKBD_CMD_RESET_BAT, param);
Kevin O'Connorb44a8522009-01-17 23:30:01 -050076 if (ret)
Kevin O'Connor3b897192008-07-20 10:08:59 -040077 return;
78 if (param[0] != 0xaa) {
Kevin O'Connorf13b0082008-08-17 11:26:42 -040079 dprintf(1, "keyboard self test failed (got %x not 0xaa)\n", param[0]);
Kevin O'Connor3b897192008-07-20 10:08:59 -040080 return;
81 }
Kevin O'Connor2018eff2008-03-12 21:27:02 -040082
83 /* Disable keyboard */
Kevin O'Connor3b897192008-07-20 10:08:59 -040084 ret = kbd_command(ATKBD_CMD_RESET_DIS, NULL);
85 if (ret)
86 return;
Kevin O'Connor2018eff2008-03-12 21:27:02 -040087
Kevin O'Connorb44a8522009-01-17 23:30:01 -050088 // Set scancode command (mode 2)
89 param[0] = 0x02;
90 ret = kbd_command(ATKBD_CMD_SSCANSET, param);
91 if (ret)
92 return;
93
Kevin O'Connor3b897192008-07-20 10:08:59 -040094 // Keyboard Mode: scan code convert, disable mouse, enable IRQ 1
95 SET_EBDA(ps2ctr, I8042_CTR_AUXDIS | I8042_CTR_XLATE | I8042_CTR_KBDINT);
Kevin O'Connor2018eff2008-03-12 21:27:02 -040096
97 /* Enable keyboard */
Kevin O'Connor3b897192008-07-20 10:08:59 -040098 ret = kbd_command(ATKBD_CMD_ENABLE, NULL);
99 if (ret)
100 return;
Kevin O'Connor2018eff2008-03-12 21:27:02 -0400101
Kevin O'Connor3b897192008-07-20 10:08:59 -0400102 dprintf(1, "keyboard initialized\n");
Kevin O'Connor2018eff2008-03-12 21:27:02 -0400103}
104
105void
106kbd_setup()
107{
Kevin O'Connor35192dd2008-06-08 19:18:33 -0400108 dprintf(3, "init keyboard\n");
Kevin O'Connor8c0e3722009-01-02 14:19:43 -0500109 u16 x = offsetof(struct bios_data_area_s, kbd_buf);
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400110 SET_BDA(kbd_flag2, KF2_101KBD);
Kevin O'Connor2018eff2008-03-12 21:27:02 -0400111 SET_BDA(kbd_buf_head, x);
112 SET_BDA(kbd_buf_tail, x);
113 SET_BDA(kbd_buf_start_offset, x);
114
115 SET_BDA(kbd_buf_end_offset
116 , x + FIELD_SIZEOF(struct bios_data_area_s, kbd_buf));
117
Kevin O'Connor40967022008-07-21 22:23:05 -0400118 if (! CONFIG_KEYBOARD)
119 return;
120
Kevin O'Connor2018eff2008-03-12 21:27:02 -0400121 keyboard_init();
Kevin O'Connorf54c1502008-06-14 15:56:16 -0400122
Kevin O'Connord21c0892008-11-26 17:02:43 -0500123 enable_hwirq(1, entry_09);
Kevin O'Connor2018eff2008-03-12 21:27:02 -0400124}
125
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500126static u8
127enqueue_key(u8 scan_code, u8 ascii_code)
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500128{
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500129 u16 buffer_start = GET_BDA(kbd_buf_start_offset);
130 u16 buffer_end = GET_BDA(kbd_buf_end_offset);
131
132 u16 buffer_head = GET_BDA(kbd_buf_head);
133 u16 buffer_tail = GET_BDA(kbd_buf_tail);
134
135 u16 temp_tail = buffer_tail;
136 buffer_tail += 2;
137 if (buffer_tail >= buffer_end)
138 buffer_tail = buffer_start;
139
140 if (buffer_tail == buffer_head)
141 return 0;
142
Kevin O'Connor8c0e3722009-01-02 14:19:43 -0500143 SET_FARVAR(SEG_BDA, *(u8*)(temp_tail+0), ascii_code);
144 SET_FARVAR(SEG_BDA, *(u8*)(temp_tail+1), scan_code);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500145 SET_BDA(kbd_buf_tail, buffer_tail);
146 return 1;
147}
148
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500149static void
150dequeue_key(struct bregs *regs, int incr, int extended)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500151{
152 u16 buffer_head;
153 u16 buffer_tail;
154 for (;;) {
155 buffer_head = GET_BDA(kbd_buf_head);
156 buffer_tail = GET_BDA(kbd_buf_tail);
157
158 if (buffer_head != buffer_tail)
159 break;
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500160 if (!incr) {
161 regs->flags |= F_ZF;
162 return;
163 }
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400164 wait_irq();
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500165 }
166
Kevin O'Connor8c0e3722009-01-02 14:19:43 -0500167 u8 ascii_code = GET_FARVAR(SEG_BDA, *(u8*)(buffer_head+0));
168 u8 scan_code = GET_FARVAR(SEG_BDA, *(u8*)(buffer_head+1));
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500169 if ((ascii_code == 0xF0 && scan_code != 0)
170 || (ascii_code == 0xE0 && !extended))
171 ascii_code = 0;
172 regs->ax = (scan_code << 8) | ascii_code;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500173
Kevin O'Connor92f95b02008-12-29 20:42:40 -0500174 if (!incr) {
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500175 regs->flags &= ~F_ZF;
Kevin O'Connor92f95b02008-12-29 20:42:40 -0500176 return;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500177 }
Kevin O'Connor92f95b02008-12-29 20:42:40 -0500178 u16 buffer_start = GET_BDA(kbd_buf_start_offset);
179 u16 buffer_end = GET_BDA(kbd_buf_end_offset);
180
181 buffer_head += 2;
182 if (buffer_head >= buffer_end)
183 buffer_head = buffer_start;
184 SET_BDA(kbd_buf_head, buffer_head);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500185}
186
187// read keyboard input
188static void
189handle_1600(struct bregs *regs)
190{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500191 dequeue_key(regs, 1, 0);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500192}
193
194// check keyboard status
195static void
196handle_1601(struct bregs *regs)
197{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500198 dequeue_key(regs, 0, 0);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500199}
200
201// get shift flag status
202static void
203handle_1602(struct bregs *regs)
204{
205 regs->al = GET_BDA(kbd_flag0);
206}
207
208// store key-stroke into buffer
209static void
210handle_1605(struct bregs *regs)
211{
212 regs->al = !enqueue_key(regs->ch, regs->cl);
213}
214
215// GET KEYBOARD FUNCTIONALITY
216static void
217handle_1609(struct bregs *regs)
218{
219 // bit Bochs Description
220 // 7 0 reserved
221 // 6 0 INT 16/AH=20h-22h supported (122-key keyboard support)
222 // 5 1 INT 16/AH=10h-12h supported (enhanced keyboard support)
223 // 4 1 INT 16/AH=0Ah supported
224 // 3 0 INT 16/AX=0306h supported
225 // 2 0 INT 16/AX=0305h supported
226 // 1 0 INT 16/AX=0304h supported
227 // 0 0 INT 16/AX=0300h supported
228 //
229 regs->al = 0x30;
230}
231
232// GET KEYBOARD ID
233static void
234handle_160a(struct bregs *regs)
235{
Kevin O'Connor3b897192008-07-20 10:08:59 -0400236 u8 param[2];
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400237 irq_enable();
Kevin O'Connor3b897192008-07-20 10:08:59 -0400238 int ret = kbd_command(ATKBD_CMD_GETID, param);
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400239 irq_disable();
Kevin O'Connor3b897192008-07-20 10:08:59 -0400240 if (ret) {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500241 regs->bx = 0;
242 return;
243 }
Kevin O'Connor3b897192008-07-20 10:08:59 -0400244 regs->bx = (param[1] << 8) | param[0];
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500245}
246
247// read MF-II keyboard input
248static void
249handle_1610(struct bregs *regs)
250{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500251 dequeue_key(regs, 1, 1);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500252}
253
254// check MF-II keyboard status
255static void
256handle_1611(struct bregs *regs)
257{
Kevin O'Connor993f9d32008-12-16 23:47:37 -0500258 dequeue_key(regs, 0, 1);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500259}
260
261// get extended keyboard status
262static void
263handle_1612(struct bregs *regs)
264{
265 regs->al = GET_BDA(kbd_flag0);
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400266 regs->ah = ((GET_BDA(kbd_flag1) & ~(KF2_RCTRL|KF2_RALT))
267 | (GET_BDA(kbd_flag2) & (KF2_RCTRL|KF2_RALT)));
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500268 //BX_DEBUG_INT16("int16: func 12 sending %04x\n",AX);
269}
270
271static void
272handle_166f(struct bregs *regs)
273{
274 if (regs->al == 0x08)
275 // unsupported, aka normal keyboard
276 regs->ah = 2;
277}
278
279// keyboard capability check called by DOS 5.0+ keyb
280static void
281handle_1692(struct bregs *regs)
282{
283 // function int16 ah=0x10-0x12 supported
284 regs->ah = 0x80;
285}
286
287// 122 keys capability check called by DOS 5.0+ keyb
288static void
289handle_16a2(struct bregs *regs)
290{
291 // don't change AH : function int16 ah=0x20-0x22 NOT supported
292}
293
294static void
Kevin O'Connor9f4f6402008-07-21 23:40:57 -0400295handle_16XX(struct bregs *regs)
296{
297 debug_stub(regs);
298}
299
300static void
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500301set_leds()
302{
Kevin O'Connor3b897192008-07-20 10:08:59 -0400303 u8 shift_flags = (GET_BDA(kbd_flag0) >> 4) & 0x07;
304 u8 kbd_led = GET_BDA(kbd_led);
305 u8 led_flags = kbd_led & 0x07;
306 if (shift_flags == led_flags)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500307 return;
308
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400309 irq_enable();
Kevin O'Connor3b897192008-07-20 10:08:59 -0400310 int ret = kbd_command(ATKBD_CMD_SETLEDS, &shift_flags);
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400311 irq_disable();
Kevin O'Connor3b897192008-07-20 10:08:59 -0400312 if (ret)
313 // Error
314 return;
315 kbd_led = (kbd_led & ~0x07) | shift_flags;
316 SET_BDA(kbd_led, kbd_led);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500317}
318
319// INT 16h Keyboard Service Entry Point
Kevin O'Connor19786762008-03-05 21:09:59 -0500320void VISIBLE16
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500321handle_16(struct bregs *regs)
322{
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400323 debug_enter(regs, DEBUG_HDL_16);
Kevin O'Connor40967022008-07-21 22:23:05 -0400324 if (! CONFIG_KEYBOARD)
325 return;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500326
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400327 // XXX - set_leds should be called from irq handler
Kevin O'Connor3b897192008-07-20 10:08:59 -0400328 set_leds();
329
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500330 switch (regs->ah) {
331 case 0x00: handle_1600(regs); break;
332 case 0x01: handle_1601(regs); break;
333 case 0x02: handle_1602(regs); break;
334 case 0x05: handle_1605(regs); break;
335 case 0x09: handle_1609(regs); break;
336 case 0x0a: handle_160a(regs); break;
337 case 0x10: handle_1610(regs); break;
338 case 0x11: handle_1611(regs); break;
339 case 0x12: handle_1612(regs); break;
340 case 0x92: handle_1692(regs); break;
341 case 0xa2: handle_16a2(regs); break;
342 case 0x6f: handle_166f(regs); break;
Kevin O'Connor9f4f6402008-07-21 23:40:57 -0400343 default: handle_16XX(regs); break;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500344 }
345}
346
347#define none 0
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400348#define MNUM KF0_NUMACTIVE
349#define MCAP KF0_CAPSACTIVE
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500350
351static struct scaninfo {
352 u16 normal;
353 u16 shift;
354 u16 control;
355 u16 alt;
356 u8 lock_flags;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400357} scan_to_scanascii[] VAR16 = {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500358 { none, none, none, none, none },
359 { 0x011b, 0x011b, 0x011b, 0x0100, none }, /* escape */
360 { 0x0231, 0x0221, none, 0x7800, none }, /* 1! */
361 { 0x0332, 0x0340, 0x0300, 0x7900, none }, /* 2@ */
362 { 0x0433, 0x0423, none, 0x7a00, none }, /* 3# */
363 { 0x0534, 0x0524, none, 0x7b00, none }, /* 4$ */
364 { 0x0635, 0x0625, none, 0x7c00, none }, /* 5% */
365 { 0x0736, 0x075e, 0x071e, 0x7d00, none }, /* 6^ */
366 { 0x0837, 0x0826, none, 0x7e00, none }, /* 7& */
367 { 0x0938, 0x092a, none, 0x7f00, none }, /* 8* */
368 { 0x0a39, 0x0a28, none, 0x8000, none }, /* 9( */
369 { 0x0b30, 0x0b29, none, 0x8100, none }, /* 0) */
370 { 0x0c2d, 0x0c5f, 0x0c1f, 0x8200, none }, /* -_ */
371 { 0x0d3d, 0x0d2b, none, 0x8300, none }, /* =+ */
372 { 0x0e08, 0x0e08, 0x0e7f, none, none }, /* backspace */
373 { 0x0f09, 0x0f00, none, none, none }, /* tab */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400374 { 0x1071, 0x1051, 0x1011, 0x1000, MCAP }, /* Q */
375 { 0x1177, 0x1157, 0x1117, 0x1100, MCAP }, /* W */
376 { 0x1265, 0x1245, 0x1205, 0x1200, MCAP }, /* E */
377 { 0x1372, 0x1352, 0x1312, 0x1300, MCAP }, /* R */
378 { 0x1474, 0x1454, 0x1414, 0x1400, MCAP }, /* T */
379 { 0x1579, 0x1559, 0x1519, 0x1500, MCAP }, /* Y */
380 { 0x1675, 0x1655, 0x1615, 0x1600, MCAP }, /* U */
381 { 0x1769, 0x1749, 0x1709, 0x1700, MCAP }, /* I */
382 { 0x186f, 0x184f, 0x180f, 0x1800, MCAP }, /* O */
383 { 0x1970, 0x1950, 0x1910, 0x1900, MCAP }, /* P */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500384 { 0x1a5b, 0x1a7b, 0x1a1b, none, none }, /* [{ */
385 { 0x1b5d, 0x1b7d, 0x1b1d, none, none }, /* ]} */
386 { 0x1c0d, 0x1c0d, 0x1c0a, none, none }, /* Enter */
387 { none, none, none, none, none }, /* L Ctrl */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400388 { 0x1e61, 0x1e41, 0x1e01, 0x1e00, MCAP }, /* A */
389 { 0x1f73, 0x1f53, 0x1f13, 0x1f00, MCAP }, /* S */
390 { 0x2064, 0x2044, 0x2004, 0x2000, MCAP }, /* D */
391 { 0x2166, 0x2146, 0x2106, 0x2100, MCAP }, /* F */
392 { 0x2267, 0x2247, 0x2207, 0x2200, MCAP }, /* G */
393 { 0x2368, 0x2348, 0x2308, 0x2300, MCAP }, /* H */
394 { 0x246a, 0x244a, 0x240a, 0x2400, MCAP }, /* J */
395 { 0x256b, 0x254b, 0x250b, 0x2500, MCAP }, /* K */
396 { 0x266c, 0x264c, 0x260c, 0x2600, MCAP }, /* L */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500397 { 0x273b, 0x273a, none, none, none }, /* ;: */
398 { 0x2827, 0x2822, none, none, none }, /* '" */
399 { 0x2960, 0x297e, none, none, none }, /* `~ */
400 { none, none, none, none, none }, /* L shift */
401 { 0x2b5c, 0x2b7c, 0x2b1c, none, none }, /* |\ */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400402 { 0x2c7a, 0x2c5a, 0x2c1a, 0x2c00, MCAP }, /* Z */
403 { 0x2d78, 0x2d58, 0x2d18, 0x2d00, MCAP }, /* X */
404 { 0x2e63, 0x2e43, 0x2e03, 0x2e00, MCAP }, /* C */
405 { 0x2f76, 0x2f56, 0x2f16, 0x2f00, MCAP }, /* V */
406 { 0x3062, 0x3042, 0x3002, 0x3000, MCAP }, /* B */
407 { 0x316e, 0x314e, 0x310e, 0x3100, MCAP }, /* N */
408 { 0x326d, 0x324d, 0x320d, 0x3200, MCAP }, /* M */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500409 { 0x332c, 0x333c, none, none, none }, /* ,< */
410 { 0x342e, 0x343e, none, none, none }, /* .> */
411 { 0x352f, 0x353f, none, none, none }, /* /? */
412 { none, none, none, none, none }, /* R Shift */
413 { 0x372a, 0x372a, none, none, none }, /* * */
414 { none, none, none, none, none }, /* L Alt */
415 { 0x3920, 0x3920, 0x3920, 0x3920, none }, /* space */
416 { none, none, none, none, none }, /* caps lock */
417 { 0x3b00, 0x5400, 0x5e00, 0x6800, none }, /* F1 */
418 { 0x3c00, 0x5500, 0x5f00, 0x6900, none }, /* F2 */
419 { 0x3d00, 0x5600, 0x6000, 0x6a00, none }, /* F3 */
420 { 0x3e00, 0x5700, 0x6100, 0x6b00, none }, /* F4 */
421 { 0x3f00, 0x5800, 0x6200, 0x6c00, none }, /* F5 */
422 { 0x4000, 0x5900, 0x6300, 0x6d00, none }, /* F6 */
423 { 0x4100, 0x5a00, 0x6400, 0x6e00, none }, /* F7 */
424 { 0x4200, 0x5b00, 0x6500, 0x6f00, none }, /* F8 */
425 { 0x4300, 0x5c00, 0x6600, 0x7000, none }, /* F9 */
426 { 0x4400, 0x5d00, 0x6700, 0x7100, none }, /* F10 */
427 { none, none, none, none, none }, /* Num Lock */
428 { none, none, none, none, none }, /* Scroll Lock */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400429 { 0x4700, 0x4737, 0x7700, none, MNUM }, /* 7 Home */
430 { 0x4800, 0x4838, none, none, MNUM }, /* 8 UP */
431 { 0x4900, 0x4939, 0x8400, none, MNUM }, /* 9 PgUp */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500432 { 0x4a2d, 0x4a2d, none, none, none }, /* - */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400433 { 0x4b00, 0x4b34, 0x7300, none, MNUM }, /* 4 Left */
434 { 0x4c00, 0x4c35, none, none, MNUM }, /* 5 */
435 { 0x4d00, 0x4d36, 0x7400, none, MNUM }, /* 6 Right */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500436 { 0x4e2b, 0x4e2b, none, none, none }, /* + */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400437 { 0x4f00, 0x4f31, 0x7500, none, MNUM }, /* 1 End */
438 { 0x5000, 0x5032, none, none, MNUM }, /* 2 Down */
439 { 0x5100, 0x5133, 0x7600, none, MNUM }, /* 3 PgDn */
440 { 0x5200, 0x5230, none, none, MNUM }, /* 0 Ins */
441 { 0x5300, 0x532e, none, none, MNUM }, /* Del */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500442 { none, none, none, none, none },
443 { none, none, none, none, none },
444 { 0x565c, 0x567c, none, none, none }, /* \| */
Kevin O'Connor7c774172008-10-25 14:38:31 -0400445 { 0x8500, 0x8700, 0x8900, 0x8b00, none }, /* F11 */
446 { 0x8600, 0x8800, 0x8a00, 0x8c00, none }, /* F12 */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500447};
448
Kevin O'Connora83ff552009-01-01 21:00:59 -0500449// Handle a scancode read from the ps2 port. Note that "noinline" is
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400450// used to make sure the call to call16_simpint in process_key doesn't
Kevin O'Connora83ff552009-01-01 21:00:59 -0500451// have the overhead of this function's stack.
452static void noinline
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400453__process_key(u8 scancode)
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500454{
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400455 u8 flags0 = GET_BDA(kbd_flag0);
456 u8 flags1 = GET_BDA(kbd_flag1);
457 u8 flags2 = GET_BDA(kbd_flag2);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500458
Kevin O'Connorb532d722009-09-11 17:00:31 -0400459 if (flags2 & KF2_LAST_E1) {
460 // Part of "pause" key (sequence is e1 1d 45 e1 9d c5)
461 if ((scancode & ~0x80) == 0x1d)
462 // Second key of sequence
463 return;
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400464 // Third key of sequence - clear flag.
Kevin O'Connorb532d722009-09-11 17:00:31 -0400465 flags2 &= ~KF2_LAST_E1;
466 SET_BDA(kbd_flag2, flags2);
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400467
468 if (scancode == 0xc5) {
469 // Final key in sequence.
470
471 // XXX - do actual pause.
472 }
Kevin O'Connorb532d722009-09-11 17:00:31 -0400473 return;
474 }
475
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400476 // XXX - PrtScr should cause int 0x05
477 // XXX - Ctrl+Break should cause int 0x1B
478 // XXX - SysReq should cause int 0x15/0x85
479
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500480 switch (scancode) {
481 case 0x00:
Kevin O'Connorac8df8c2008-05-24 23:46:33 -0400482 dprintf(1, "KBD: int09 handler: AL=0\n");
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500483 return;
484
485 case 0x3a: /* Caps Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400486 flags0 ^= KF0_CAPSACTIVE;
487 flags1 |= KF1_CAPS;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500488 break;
489 case 0xba: /* Caps Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400490 flags1 &= ~KF1_CAPS;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500491 break;
492
493 case 0x2a: /* L Shift press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400494 flags0 |= KF0_LSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500495 break;
496 case 0xaa: /* L Shift release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400497 flags0 &= ~KF0_LSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500498 break;
499
500 case 0x36: /* R Shift press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400501 flags0 |= KF0_RSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500502 break;
503 case 0xb6: /* R Shift release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400504 flags0 &= ~KF0_RSHIFT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500505 break;
506
507 case 0x1d: /* Ctrl press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400508 flags0 |= KF0_CTRLACTIVE;
509 if (flags2 & KF2_LAST_E0)
510 flags2 |= KF2_RCTRL;
511 else
512 flags1 |= KF1_LCTRL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500513 break;
514 case 0x9d: /* Ctrl release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400515 flags0 &= ~KF0_CTRLACTIVE;
516 if (flags2 & KF2_LAST_E0)
517 flags2 &= ~KF2_RCTRL;
518 else
519 flags1 &= ~KF1_LCTRL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500520 break;
521
522 case 0x38: /* Alt press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400523 flags0 |= KF0_ALTACTIVE;
524 if (flags2 & KF2_LAST_E0)
525 flags2 |= KF2_RALT;
526 else
527 flags1 |= KF1_LALT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500528 break;
529 case 0xb8: /* Alt release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400530 flags0 &= ~KF0_ALTACTIVE;
531 if (flags2 & KF2_LAST_E0)
532 flags2 &= ~KF2_RALT;
533 else
534 flags1 &= ~KF1_LALT;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500535 break;
536
537 case 0x45: /* Num Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400538 flags1 |= KF1_NUM;
539 flags0 ^= KF0_NUMACTIVE;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500540 break;
541 case 0xc5: /* Num Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400542 flags1 &= ~KF1_NUM;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500543 break;
544
545 case 0x46: /* Scroll Lock press */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400546 flags1 |= KF1_SCROLL;
547 flags0 ^= KF0_SCROLLACTIVE;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500548 break;
549 case 0xc6: /* Scroll Lock release */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400550 flags1 &= ~KF1_SCROLL;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500551 break;
552
553 case 0xe0:
554 // Extended key
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400555 flags2 |= KF2_LAST_E0;
556 SET_BDA(kbd_flag2, flags2);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500557 return;
558 case 0xe1:
Kevin O'Connorb532d722009-09-11 17:00:31 -0400559 // Start of pause key sequence
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400560 flags2 |= KF2_LAST_E1;
Kevin O'Connorb532d722009-09-11 17:00:31 -0400561 break;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500562
563 default:
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500564 if (scancode & 0x80)
565 // toss key releases
566 break;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400567 if (scancode == 0x53
568 && ((flags0 & (KF0_CTRLACTIVE|KF0_ALTACTIVE))
569 == (KF0_CTRLACTIVE|KF0_ALTACTIVE))) {
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500570 // Ctrl+alt+del - reset machine.
Kevin O'Connor885e2dd2009-01-21 19:14:20 -0500571 SET_BDA(soft_reset_flag, 0x1234);
Kevin O'Connor3f168b62008-11-29 13:22:29 -0500572 reset_vector();
Kevin O'Connor885e2dd2009-01-21 19:14:20 -0500573 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400574 if (scancode >= ARRAY_SIZE(scan_to_scanascii)) {
Kevin O'Connorac8df8c2008-05-24 23:46:33 -0400575 dprintf(1, "KBD: int09h_handler(): unknown scancode read: 0x%02x!\n"
Kevin O'Connor438f6352008-03-30 21:46:53 -0400576 , scancode);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500577 return;
578 }
579 u8 asciicode;
580 struct scaninfo *info = &scan_to_scanascii[scancode];
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400581 if (flags0 & KF0_ALTACTIVE) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500582 asciicode = GET_GLOBAL(info->alt);
583 scancode = GET_GLOBAL(info->alt) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400584 } else if (flags0 & KF0_CTRLACTIVE) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500585 asciicode = GET_GLOBAL(info->control);
586 scancode = GET_GLOBAL(info->control) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400587 } else if (flags2 & KF2_LAST_E0
Kevin O'Connor438f6352008-03-30 21:46:53 -0400588 && scancode >= 0x47 && scancode <= 0x53) {
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500589 /* extended keys handling */
590 asciicode = 0xe0;
Kevin O'Connor15157a32008-12-13 11:10:37 -0500591 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400592 } else if (flags0 & (KF0_RSHIFT|KF0_LSHIFT)) {
Kevin O'Connorb532d722009-09-11 17:00:31 -0400593 /* check if lock state should be ignored because a SHIFT
594 * key is pressed */
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500595
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400596 if (flags0 & GET_GLOBAL(info->lock_flags)) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500597 asciicode = GET_GLOBAL(info->normal);
598 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500599 } else {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500600 asciicode = GET_GLOBAL(info->shift);
601 scancode = GET_GLOBAL(info->shift) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500602 }
603 } else {
604 /* check if lock is on */
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400605 if (flags0 & GET_GLOBAL(info->lock_flags)) {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500606 asciicode = GET_GLOBAL(info->shift);
607 scancode = GET_GLOBAL(info->shift) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500608 } else {
Kevin O'Connor15157a32008-12-13 11:10:37 -0500609 asciicode = GET_GLOBAL(info->normal);
610 scancode = GET_GLOBAL(info->normal) >> 8;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500611 }
612 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400613 if (scancode==0 && asciicode==0)
614 dprintf(1, "KBD: scancode & asciicode are zero?\n");
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500615 enqueue_key(scancode, asciicode);
616 break;
617 }
Kevin O'Connor40c0e482009-09-11 02:06:02 -0400618 flags2 &= ~KF2_LAST_E0;
619
620 SET_BDA(kbd_flag0, flags0);
621 SET_BDA(kbd_flag1, flags1);
622 SET_BDA(kbd_flag2, flags2);
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500623}
624
Kevin O'Connor114592f2009-09-28 21:32:08 -0400625void
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400626process_key(u8 key)
627{
628 if (CONFIG_KBD_CALL_INT15_4F) {
629 // allow for keyboard intercept
630 u32 eax = (0x4f << 8) | key;
631 u32 flags;
632 call16_simpint(0x15, &eax, &flags);
633 if (!(flags & F_CF))
634 return;
635 key = eax;
636 }
637 __process_key(key);
638}
639
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500640// INT09h : Keyboard Hardware Service Entry Point
Kevin O'Connor19786762008-03-05 21:09:59 -0500641void VISIBLE16
Kevin O'Connored128492008-03-11 11:14:59 -0400642handle_09()
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500643{
Kevin O'Connor15c1f222008-06-12 22:59:43 -0400644 debug_isr(DEBUG_ISR_09);
Kevin O'Connor40967022008-07-21 22:23:05 -0400645 if (! CONFIG_KEYBOARD)
646 goto done;
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500647
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500648 // read key from keyboard controller
Kevin O'Connor3b897192008-07-20 10:08:59 -0400649 u8 v = inb(PORT_PS2_STATUS);
Kevin O'Connor0234cd92009-01-04 12:20:02 -0500650 if ((v & (I8042_STR_OBF|I8042_STR_AUXDATA)) != I8042_STR_OBF) {
651 dprintf(1, "keyboard irq but no keyboard data.\n");
Kevin O'Connor3b897192008-07-20 10:08:59 -0400652 goto done;
653 }
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400654 v = inb(PORT_PS2_DATA);
Kevin O'Connor3b897192008-07-20 10:08:59 -0400655
Kevin O'Connoree2efa72009-09-20 15:33:08 -0400656 process_key(v);
Kevin O'Connor4b60c002008-02-25 22:29:55 -0500657
Kevin O'Connor38fcbfe2008-02-25 22:30:47 -0500658done:
Kevin O'Connor3b897192008-07-20 10:08:59 -0400659 eoi_pic1();
Kevin O'Connorf076a3e2008-02-25 22:25:15 -0500660}