2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2008, Peter Dinda <pdinda@northwestern.edu>
11 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Peter Dinda <pdinda@northwestern.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
20 #include <devices/keyboard.h>
21 #include <palacios/vmm.h>
22 #include <palacios/vmm_types.h>
25 #ifndef DEBUG_KEYBOARD
27 #define PrintDebug(fmt, args...)
30 #define KEYBOARD_DEBUG_80H 0
34 #define KEYBOARD_60H 0x60 // keyboard microcontroller
35 #define KEYBOARD_64H 0x64 // onboard microcontroller
37 #define KEYBOARD_DELAY_80H 0x80 // written for timing
39 #define KEYBOARD_IRQ 0x1
43 // extract bits for status byte
44 #define STATUS_OUTPUT_BUFFER_FULL 0x01 // 1=full (data for system)
45 #define STATUS_INPUT_BUFFER_FULL 0x02 // 1=full (data for 8042)
46 #define STATUS_SYSTEM 0x04 // 1=self-test-passed
47 #define STATUS_COMMAND_DATA_AVAIL 0x08 // internal: 0=data on 60h, 0=cmd on 64h
48 #define STATUS_ENABLED 0x10 // 1=keyboard is enabled
49 #define STATUS_MOUSE_BUFFER_FULL 0x20 // 1= mouse output buffer full
50 #define STATUS_TIMEOUT 0x40 // 1=timeout of keybd
51 #define STATUS_PARITY 0x80 // 1=parity error
55 #define CMD_INTR 0x01 // 1=interrupts enabled
56 #define CMD_MOUSE_INTR 0x02 // 1=interrupts enabled for mouse
57 #define CMD_SYSTEM 0x04 // 1= self test passed
58 #define CMD_OVERRIDE 0x08 // FORCE 0 for PS2
59 #define CMD_DISABLE 0x10 // 1=disabled keyboard
60 #define CMD_MOUSE_DISABLE 0x20 // 1=disabled mouse
61 #define CMD_SCANCODE_XLATE 0x40 // 1=translate to set 1 scancodes
62 #define CMD_RESERVED 0x80 // should be zero
64 // bits for the output port
67 #define OUTPUT_RESET 0x01 // System reset on 0
68 #define OUTPUT_A20 0x02 // A20 gate (1= A20 is gated)
69 #define OUTPUT_RES1 0x04 // reserved
70 #define OUTPUT_RES2 0x08 // reserved
71 #define OUTPUT_OUTPUT_FULL 0x10 // output buffer full
72 #define OUTPUT_INPUT_EMPTY 0x20 // input buffer empty
73 #define OUTPUT_KBD_CLOCK 0x40 // keyboard clock (?)
74 #define OUTPUT_KBD_DATA 0x80 // keyboard data
76 // bits for the input port
78 #define INPUT_RES0 0x01 // reserved
79 #define INPUT_RES1 0x02 // reserved
80 #define INPUT_RES2 0x04 // reserved
81 #define INPUT_RES3 0x08 // reserved
82 #define INPUT_RAM 0x10 // set to 1 if RAM exists?
83 #define INPUT_JUMPER 0x20 // manufacturing jumper?
84 #define INPUT_DISPLAY 0x40 // 0=color, 1=mono
85 #define INPUT_KBD_INHIBIT 0x80 // 1=inhibit keyboard ?
88 // for queue operations
92 // for queue operations - whether it's data or cmd waiting on 60h
96 // for queue operations - whether this is keyboard or mouse data on 60h
101 // The currently targetted keyboard
102 static struct vm_device * thekeyboard = NULL;
104 //#define QUEUE_SIZE 32
107 struct keyboard_internal {
109 // 0x60 is the port for the keyboard microcontroller
110 // writes are commands
111 // reads from it usually return scancodes
112 // however, it can also return other data
113 // depending on the state of the onboard microcontroller
115 // 0x64 is the port for the onboard microcontroller
116 // writes are commands
120 // state of the onboard microcontroller
121 // this is needed because sometimes 0x60 reads come
122 // from the onboard microcontroller
123 enum {// Normal mode measn we deliver keys
124 // to the vm and accept commands from it
126 // after receiving cmd 0x60
127 // keybaord uC cmd will subsequently arrive
129 // after recieving 0xa5
130 // password arrives on data port, null terminated
132 // after having reset sent to 0x60
133 // we immediately ack, and then
134 // push BAT success (0xaa) after the ack
136 // after having a d1 sent to 64
137 // we wait for a new output byte on 60
139 // after having a d2 sent to 64
140 // we wait for a new output byte on 60
141 // then make it available as a keystroke
143 // after having a d3 sent to 64
144 // we wait for a new output byte on 60
145 // then make it available as a mouse event
147 // after having a d4 sent to 64
148 // we wait for a new output byte on 60
149 // then send it to the mouse
155 // after receiving a mouse command 0f 0xff
156 // we return the ack and then the next thing will be the
157 // bat code (aa - success)
159 // followed by the device id (00 - mouse)
161 // Then it goes into stream mode
164 STREAM3, // for each of the following bytes in mouse_packet
165 // this is used for setting sample rate
167 // this is used for getting device id
169 // just like the stream moes
173 // For getting status info
183 uchar_t mouse_packet[3]; // byte 1: y over, xover, y sign, x sign, 1, middle, right, left
184 // byte 2: x movement
185 // byte 3: y movement
187 uchar_t mouse_needs_ack; //
188 uchar_t mouse_done_after_ack;
190 uchar_t cmd_byte; // for keyboard uC - read/written
191 // via read/write cmd byte command
192 uchar_t status_byte; // for on-board uC - read via 64h
194 uchar_t output_byte; // output port of onboard uC (e.g. A20)
196 uchar_t input_byte; // input port of onboard uC
199 uchar_t input_queue; //
200 uint_t input_queue_len; //
201 //uint_t input_queue_read;
202 //uint_t input_queue_write;
204 uchar_t output_queue; //
205 uint_t output_queue_len; //
206 //uint_t output_queue_read;
207 //uint_t output_queue_write;
214 // push item onto outputqueue, optionally overwriting if there is no room
215 // returns 0 if successful
217 static int PushToOutputQueue(struct vm_device * dev, uchar_t value, uchar_t overwrite, uchar_t cmd, uchar_t mouse)
219 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
221 if ((state->output_queue_len == 0) || overwrite) {
223 state->output_queue = value;
224 state->output_queue_len = 1;
227 state->status_byte |= STATUS_COMMAND_DATA_AVAIL;
229 state->status_byte &= ~STATUS_COMMAND_DATA_AVAIL;
233 state->status_byte |= STATUS_MOUSE_BUFFER_FULL;
237 state->status_byte |= STATUS_OUTPUT_BUFFER_FULL;
243 PrintError("keyboard: PushToOutputQueue Failed - Queue Full\n");
250 // pull item from outputqueue
251 // returns 0 if successful
253 static int PullFromOutputQueue(struct vm_device * dev, uchar_t * value)
255 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
257 if (1 || (state->output_queue_len == 1)) {
259 *value = state->output_queue;
260 state->output_queue_len = 0;
262 if (state->status_byte & STATUS_OUTPUT_BUFFER_FULL) {
263 state->status_byte &= ~STATUS_OUTPUT_BUFFER_FULL;
266 if (state->status_byte & STATUS_MOUSE_BUFFER_FULL) {
267 state->status_byte &= ~STATUS_MOUSE_BUFFER_FULL;
270 if (state->status_byte & STATUS_COMMAND_DATA_AVAIL) {
271 state->status_byte &= ~STATUS_COMMAND_DATA_AVAIL;
277 PrintError("keyboard: PullFromOutputQueue Failed - Queue Empty\n");
285 // push item onto inputqueue, optionally overwriting if there is no room
286 // returns 0 if successful
288 static int PushToInputQueue(struct vm_device * dev, uchar_t value, uchar_t overwrite)
290 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
292 if ((state->input_queue_len == 0) || overwrite) {
294 state->input_queue = value;
295 state->input_queue_len = 1;
296 state->status_byte |= STATUS_INPUT_BUFFER_FULL;
300 PrintError("keyboard: PushToOutputQueue Failed - Queue Full\n");
306 // pull item from inputqueue
307 // returns 0 if successful
309 static int PullFromInputQueue(struct vm_device *dev, uchar_t *value)
311 struct keyboard_internal * state = (struct keyboard_internal *)(dev->private_data);
313 if (state->input_queue_len == 1) {
315 *value = state->input_queue;
316 state->input_queue_len = 0;
317 state->status_byte &= ~STATUS_INPUT_BUFFER_FULL;
321 PrintError("keyboard: PullFromInputQueue Failed - Queue Empty\n");
328 static struct vm_device *demultiplex_injected_key(uchar_t status, uchar_t scancode)
330 // this currently does nothing
334 static struct vm_device *demultiplex_injected_mouse(uchar_t mouse_packet[3])
336 // this currently does nothing
340 int keyboard_interrupt(uint_t irq, struct vm_device * dev);
342 void deliver_key_to_vmm(uchar_t status, uchar_t scancode)
344 struct vm_device *dev = demultiplex_injected_key(status, scancode);
345 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
347 PrintDebug("keyboard: injected status 0x%x, and scancode 0x%x\n", status, scancode);
349 if ( (state->status_byte & STATUS_ENABLED) // onboard is enabled
350 && (!(state->cmd_byte & CMD_DISABLE)) ) { // keyboard is enabled
352 PushToOutputQueue(dev, scancode, OVERWRITE, DATA, KEYBOARD);
354 if (state->cmd_byte & CMD_INTR) {
355 keyboard_interrupt(KEYBOARD_IRQ, dev);
362 void deliver_mouse_to_vmm(uchar_t data[3])
364 struct vm_device * dev = demultiplex_injected_mouse(data);
365 struct keyboard_internal * state = (struct keyboard_internal *)(dev->private_data);
367 PrintDebug("keyboard: injected mouse packet 0x %x %x %x\n",
368 data[0], data[1], data[2]);
370 memcpy(state->mouse_packet, data, 3);
372 state->status_byte |= STATUS_MOUSE_BUFFER_FULL;
375 switch (state->mouse_state) {
379 if (!(state->cmd_byte & CMD_MOUSE_DISABLE)) {
380 keyboard_interrupt(MOUSE_IRQ, dev);
390 int keyboard_reset_device(struct vm_device * dev)
392 struct keyboard_internal *data = (struct keyboard_internal *)(dev->private_data);
394 memset(data, 0, sizeof(struct keyboard_internal));
396 data->state = NORMAL;
397 data->mouse_state = STREAM1;
400 CMD_INTR // interrupts on
401 | CMD_MOUSE_INTR // mouse interupts on
402 | CMD_SYSTEM ; // self test passed
403 // PS2, keyboard+mouse enabled, generic translation
406 STATUS_SYSTEM // self-tests passed
407 | STATUS_ENABLED ; // keyboard ready
408 // buffers empty, no errors
410 data->output_byte = 0; // ?
412 data->input_byte = INPUT_RAM; // we have some
413 // also display=color, jumper 0, keyboard enabled
417 PrintDebug("keyboard: reset device\n");
425 int keyboard_start_device(struct vm_device *dev)
427 PrintDebug("keyboard: start device\n");
432 int keyboard_stop_device(struct vm_device *dev)
434 PrintDebug("keyboard: stop device\n");
439 int mouse_read_input(struct vm_device *dev)
441 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
443 if (state->mouse_needs_ack) {
444 state->mouse_needs_ack = 0;
446 // the ack has been stuffed previously
447 if (state->mouse_done_after_ack) {
454 switch (state->mouse_state) {
456 case RESET1: // requesting the BAT code
457 PushToOutputQueue(dev, 0xaa, OVERWRITE, DATA, MOUSE) ; // BAT successful
458 PrintDebug(" mouse sent BAT code (sucesssful) ");
459 state->mouse_state = RESET2;
461 return 0; // not done with mouse processing yet
464 case RESET2: // requesting the device id
465 PushToOutputQueue(dev, 0x00, OVERWRITE, DATA, MOUSE) ; // normal mouse type
466 PrintDebug(" mouse sent device id ");
467 state->mouse_state = STREAM1;
469 return 1; // done with mouse processing
472 case STREAM1: // send data
473 PushToOutputQueue(dev, state->mouse_packet[0], OVERWRITE, DATA, MOUSE);
474 PrintDebug(" mouse sent stream data1 ");
475 state->mouse_state = STREAM2;
480 case STREAM2: // send data
481 PushToOutputQueue(dev, state->mouse_packet[1], OVERWRITE, DATA, MOUSE);
482 PrintDebug(" mouse sent stream data2 ");
483 state->mouse_state = STREAM3;
488 case STREAM3: // send data
489 PushToOutputQueue(dev, state->mouse_packet[2], OVERWRITE, DATA, MOUSE);
490 PrintDebug(" mouse sent stream data3 ");
491 state->mouse_state = STREAM1;
493 return 1; // now done
496 case REMOTE1: // send data
497 PushToOutputQueue(dev, state->mouse_packet[0], OVERWRITE, DATA, MOUSE);
498 PrintDebug(" mouse sent remote data1 ");
499 state->mouse_state = REMOTE2;
504 case REMOTE2: // send data
505 PushToOutputQueue(dev, state->mouse_packet[1], OVERWRITE, DATA, MOUSE);
506 PrintDebug(" mouse sent remote data2 ");
507 state->mouse_state = REMOTE3;
512 case REMOTE3: // send data
513 PushToOutputQueue(dev, state->mouse_packet[2], OVERWRITE, DATA, MOUSE);
514 PrintDebug(" mouse sent remote data3 ");
515 state->mouse_state = REMOTE1;
517 return 1; // now done
520 case STATUS1: // send data
521 PushToOutputQueue(dev, 0x0, OVERWRITE, DATA, MOUSE);
522 PrintDebug(" mouse sent status data1 ");
523 state->mouse_state = STATUS2;
528 case STATUS2: // send data
529 PushToOutputQueue(dev, 0x0, OVERWRITE, DATA, MOUSE);
530 PrintDebug(" mouse sent status data2 ");
531 state->mouse_state = STATUS3;
536 case STATUS3: // send data
537 PushToOutputQueue(dev, 0x0, OVERWRITE, DATA, MOUSE);
538 PrintDebug(" mouse sent status data3 ");
539 state->mouse_state = STREAM1;
541 return 1; // now done
544 case DEVICE1: // send device id
545 PushToOutputQueue(dev, 0x0, OVERWRITE, DATA, MOUSE);
546 PrintDebug(" mouse sent device id ");
547 state->mouse_state = STREAM1;
549 return 1; // now done
553 PrintDebug(" mouse has no data ");
559 int mouse_write_output(struct vm_device * dev, uchar_t data)
561 struct keyboard_internal * state = (struct keyboard_internal *)(dev->private_data);
563 switch (state->mouse_state) {
573 PushToOutputQueue(dev, 0xfe, OVERWRITE, DATA, MOUSE) ; // no mouse!
574 PrintDebug(" mouse reset begins (no mouse) ");
576 return 1; // not done;
581 PushToOutputQueue(dev,0xfa,OVERWRITE,DATA,MOUSE) ;
582 PrintDebug(" mouse reset begins ");
583 state->mouse_done_after_ack=0;
584 state->mouse_needs_ack=1;
585 state->mouse_state=RESET1;
586 return 0; // not done;
590 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
591 PrintDebug(" mouse resend begins ");
592 state->mouse_done_after_ack = 0;
593 state->mouse_needs_ack = 0;
594 state->mouse_state = STREAM1;
595 return 0; // not done
598 case 0xf6: // set defaults
599 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
600 PrintDebug(" mouse set defaults ");
601 state->mouse_done_after_ack = 1;
602 state->mouse_needs_ack = 1;
603 state->mouse_state = STREAM1;
604 return 0; // not done
607 case 0xf5: // disable data reporting
608 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
609 state->mouse_done_after_ack = 1;
610 state->mouse_needs_ack = 1;
611 PrintDebug(" mouse disable data reporting ");
612 state->mouse_state = STREAM1;
613 return 0; // not done
616 case 0xf4: // enable data reporting
617 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
618 state->mouse_done_after_ack = 1;
619 state->mouse_needs_ack = 1;
620 PrintDebug(" mouse enable data reporting ");
621 state->mouse_state = STREAM1;
622 return 0; // not done
625 case 0xf3: // set sample rate
626 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
627 state->mouse_done_after_ack = 0;
628 state->mouse_needs_ack = 1;
629 PrintDebug(" mouse set sample rate begins ");
630 state->mouse_state = SAMPLE1;
631 return 0; // not done
634 case 0xf2: // get device id
635 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
636 state->mouse_done_after_ack = 0;
637 state->mouse_needs_ack = 1;
638 PrintDebug(" mouse get device id begins ");
639 state->mouse_state = DEVICE1;
640 return 0; // not done
643 case 0xf0: // set remote mode
644 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
645 state->mouse_done_after_ack = 1;
646 state->mouse_needs_ack = 1;
647 PrintDebug(" mouse set remote mode ");
648 state->mouse_state = REMOTE1;
649 return 0; // not done
652 case 0xee: // set wrap mode
653 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
654 state->mouse_done_after_ack = 1;
655 state->mouse_needs_ack = 1;
656 PrintDebug(" mouse set wrap mode (ignored) ");
657 state->mouse_state = STREAM1;
658 return 0; // not done
661 case 0xec: // reset wrap mode
662 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
663 state->mouse_done_after_ack = 1;
664 state->mouse_needs_ack = 1;
665 PrintDebug(" mouse reset wrap mode (ignored) ");
666 state->mouse_state = STREAM1;
670 case 0xeb: // read data
671 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
672 state->mouse_done_after_ack = 0;
673 state->mouse_needs_ack = 1;
674 PrintDebug(" mouse switch to wrap mode (ignored) ");
675 state->mouse_state = REMOTE1;
676 return 0; // not done
679 case 0xea: // set stream mode
680 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
681 state->mouse_done_after_ack = 1;
682 state->mouse_needs_ack = 1;
683 PrintDebug(" mouse set stream mode ");
684 state->mouse_state = STREAM1;
685 return 0; // not done
688 case 0xe9: // status request
689 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
690 state->mouse_done_after_ack = 0;
691 state->mouse_needs_ack = 1;
692 PrintDebug(" mouse status request begins ");
693 state->mouse_state = STATUS1;
697 case 0xe8: // set resolution
698 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
699 state->mouse_done_after_ack = 0;
700 state->mouse_needs_ack = 1;
701 PrintDebug(" mouse set resolution begins ");
702 state->mouse_state = SETRES1;
706 case 0xe7: // set scaling 2:1
707 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
708 state->mouse_done_after_ack = 1;
709 state->mouse_needs_ack = 1;
710 PrintDebug(" mouse set scaling 2:1 ");
711 state->mouse_state = STREAM1;
712 return 0; // not done
715 case 0xe6: // set scaling 1:1
716 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
717 state->mouse_done_after_ack = 1;
718 state->mouse_needs_ack = 1;
719 PrintDebug(" mouse set scaling 1:1 ");
720 state->mouse_state = STREAM1;
725 PrintDebug(" receiving unknown mouse command (0x%x) in acceptable state ", data);
732 PrintDebug(" receiving mouse output in unhandled state (0x%x) ", state->mouse_state);
738 PrintDebug(" HUH? ");
744 #if KEYBOARD_DEBUG_80H
745 int keyboard_write_delay(ushort_t port,
748 struct vm_device * dev)
752 PrintDebug("keyboard: write of 0x%x to 80h\n", *((uchar_t*)src));
756 PrintDebug("keyboard: write of >1 byte to 80h\n", *((uchar_t*)src));
762 int keyboard_read_delay(ushort_t port,
765 struct vm_device * dev)
769 *((uchar_t*)dest) = v3_inb(port);
771 PrintDebug("keyboard: read of 0x%x from 80h\n", *((uchar_t*)dest));
775 PrintDebug("keyboard: read of >1 byte from 80h\n");
786 int keyboard_write_command(ushort_t port,
789 struct vm_device * dev)
791 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
794 // Should always be single byte write
797 PrintError("keyboard: write of >1 bytes (%d) to 64h\n", length);
801 cmd = *((uchar_t*)src);
803 if (state->state != NORMAL) {
804 PrintDebug("keyboard: warning - receiving command on 64h but state != NORMAL\n");
807 PrintDebug("keyboard: command 0x%x on 64h\n", cmd);
811 case 0x20: // READ COMMAND BYTE (returned in 60h)
812 PushToOutputQueue(dev, state->cmd_byte, OVERWRITE, COMMAND,KEYBOARD);
813 state->state = NORMAL; // the next read on 0x60 will get the right data
814 PrintDebug("keyboard: command byte 0x%x returned\n", state->cmd_byte);
817 case 0x60: // WRITE COMMAND BYTE (read from 60h)
818 state->state = WRITING_CMD_BYTE; // we need to make sure we send the next 0x60 byte appropriately
819 PrintDebug("keyboard: prepare to write command byte\n");
822 // case 0x90-9f - write to output port (?)
824 case 0xa1: // Get version number
825 PushToOutputQueue(dev, 0, OVERWRITE, COMMAND, KEYBOARD);
826 state->state = NORMAL;
827 PrintDebug("keyboard: version number 0x0 returned\n");
830 case 0xa4: // is password installed? send result to 0x60
831 // we don't support passwords
832 PushToOutputQueue(dev, 0xf1, OVERWRITE, COMMAND, KEYBOARD);
833 PrintDebug("keyboard: password not installed\n");
834 state->state = NORMAL;
837 case 0xa5: // new password will arrive on 0x60
838 state->state = TRANSMIT_PASSWD;
839 PrintDebug("keyboard: pepare to transmit password\n");
842 case 0xa6: // check passwd;
843 // since we do not support passwords, we will simply ignore this
844 // the implication is that any password check immediately succeeds
845 // with a blank password
846 state->state = NORMAL;
847 PrintDebug("keyboard: password check succeeded\n");
850 case 0xa7: // disable mouse
851 state->cmd_byte |= CMD_MOUSE_DISABLE;
852 state->state = NORMAL;
853 PrintDebug("keyboard: mouse disabled\n");
856 case 0xa8: // enable mouse
857 state->cmd_byte &= ~CMD_MOUSE_DISABLE;
858 state->state = NORMAL;
859 PrintDebug("keyboard: mouse enabled\n");
862 case 0xa9: // mouse interface test (always succeeds)
863 PushToOutputQueue(dev, 0, OVERWRITE, COMMAND, KEYBOARD);
864 PrintDebug("keyboard: mouse interface test succeeded\n");
865 state->state = NORMAL;
868 case 0xaa: // controller self test (always succeeds)
869 PushToOutputQueue(dev, 0x55, OVERWRITE, COMMAND, KEYBOARD);
870 PrintDebug("keyboard: controller self test succeeded\n");
871 state->state = NORMAL;
874 case 0xab: // keyboard interface test (always succeeds)
875 PushToOutputQueue(dev, 0, OVERWRITE, COMMAND, KEYBOARD);
876 state->state = NORMAL;
877 PrintDebug("keyboard: keyboard interface test succeeded\n");
880 case 0xad: // disable keyboard
881 state->cmd_byte |= CMD_DISABLE;
882 state->state = NORMAL;
883 PrintDebug("keyboard: keyboard disabled\n");
886 case 0xae: // enable keyboard
887 state->cmd_byte &= ~CMD_DISABLE;
888 state->state = NORMAL;
889 PrintDebug("keyboard: keyboard enabled\n");
892 case 0xaf: // get version
893 PushToOutputQueue(dev, 0x00, OVERWRITE, COMMAND, KEYBOARD);
894 state->state = NORMAL;
895 PrintDebug("keyboard: version 0 returned \n");
898 case 0xd0: // return microcontroller output on 60h
899 PushToOutputQueue(dev, state->output_byte, OVERWRITE, COMMAND, KEYBOARD);
900 state->state = NORMAL;
901 PrintDebug("keyboard: output byte 0x%x returned\n", state->output_byte);
904 case 0xd1: // request to write next byte on 60h to the microcontroller output port
905 state->state = WRITING_OUTPUT_PORT;
906 PrintDebug("keyboard: prepare to write output byte\n");
909 case 0xd2: // write keyboard buffer (inject key)
910 state->state = INJECTING_KEY;
911 PrintDebug("keyboard: prepare to inject key\n");
914 case 0xd3: // write mouse buffer (inject mouse)
915 state->state = INJECTING_MOUSE;
916 PrintDebug("keyboard: prepare to inject mouse\n");
919 case 0xd4: // write mouse device (command to mouse?)
920 state->state = IN_MOUSE;
921 PrintDebug("keyboard: prepare to inject mouse command\n");
924 case 0xc0: // read input port
925 PushToOutputQueue(dev, state->input_byte, OVERWRITE, COMMAND, KEYBOARD);
926 state->state = NORMAL;
927 PrintDebug("keyboard: input byte 0x%x returned\n", state->input_byte);
930 case 0xc1: //copy input port lsn to status msn
931 state->status_byte &= 0x0f;
932 state->status_byte |= (state->input_byte & 0xf) << 4;
933 state->state = NORMAL;
934 PrintDebug("keyboard: copied input byte lsn to status msn\n");
937 case 0xc2: // copy input port msn to status msn
938 state->status_byte &= 0x0f;
939 state->status_byte |= (state->input_byte & 0xf0);
940 state->state = NORMAL;
941 PrintDebug("keyboard: copied input byte msn to status msn\n");
944 case 0xe0: // read test port
945 PushToOutputQueue(dev, state->output_byte >> 6, OVERWRITE, COMMAND, KEYBOARD);
946 state->state = NORMAL;
947 PrintDebug("keyboard: read 0x%x from test port\n", state->output_byte >> 6);
951 case 0xf0: // pulse output port
952 case 0xf1: // this should pulse 0..3 of cmd_byte on output port
953 case 0xf2: // instead of what is currently in output_byte (I think)
954 case 0xf3: // main effect is taht if bit zero is zero
955 case 0xf4: // should cause reset
956 case 0xf5: // I doubt anything more recent than a 286 running
957 case 0xf6: // OS2 with the penalty box will care
968 PrintDebug("keyboard: ignoring pulse of 0x%x (low=pulsed) on output port\n", (cmd & 0xf));
969 state->state = NORMAL;
973 // case ac diagonstic - returns 16 bytes from keyboard microcontroler on 60h
975 PrintDebug("keyboard: ignoring command (unimplemented)\n");
976 state->state = NORMAL;
984 int keyboard_read_status(ushort_t port,
987 struct vm_device * dev)
989 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
993 PrintDebug("keyboard: read status (64h): ");
995 *((uchar_t*)dest) = state->status_byte;
997 PrintDebug("0x%x\n", *((uchar_t*)dest));
1001 PrintError("keyboard: >1 byte read for status (64h)\n");
1006 int keyboard_write_output(ushort_t port,
1009 struct vm_device * dev)
1011 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
1014 PrintError("keyboard: write of 60h with >1 byte\n");
1018 uchar_t data = *((uchar_t*)src);
1020 PrintDebug("keyboard: output 0x%x on 60h\n", data);
1022 switch (state->state) {
1023 case WRITING_CMD_BYTE:
1024 state->cmd_byte = data;
1025 state->state = NORMAL;
1026 PrintDebug("keyboard: wrote new command byte 0x%x\n", state->cmd_byte);
1028 case WRITING_OUTPUT_PORT:
1029 state->output_byte = data;
1030 state->state = NORMAL;
1031 PrintDebug("keyboard: wrote new output byte 0x%x\n", state->output_byte);
1034 PushToOutputQueue(dev, data, OVERWRITE, COMMAND, KEYBOARD); // probably should be a call to deliver_key_to_vmm()
1035 state->state = NORMAL;
1036 PrintDebug("keyboard: injected key 0x%x\n", data);
1038 case INJECTING_MOUSE:
1039 PrintDebug("keyboard: ignoring injected mouse event 0x%x\n", data);
1040 state->state = NORMAL;
1043 PrintDebug("keyboard: mouse action: ");
1044 if (mouse_write_output(dev, data)) {
1045 state->state = NORMAL;
1049 case TRANSMIT_PASSWD:
1052 PrintDebug("keyboard: ignoring password character 0x%x\n",data);
1055 state->state = NORMAL;
1056 PrintDebug("keyboard: done with password\n");
1061 // command is being sent to keyboard controller
1064 PushToOutputQueue(dev, 0xfa, OVERWRITE, COMMAND, KEYBOARD); // ack
1065 state->state = RESET;
1066 PrintDebug("keyboard: reset complete and acked\n", data);
1068 case 0xf5: // disable scanning
1069 case 0xf4: // enable scanning
1071 PushToOutputQueue(dev, 0xfa, OVERWRITE, COMMAND, KEYBOARD);
1072 // should do something here... PAD
1073 state->state = NORMAL;
1074 PrintDebug("keyboard: %s scanning done and acked\n",data==0xf5 ? "disable" : "enable", data);
1076 case 0xfe: // resend
1077 case 0xfd: // set key type make
1078 case 0xfc: // set key typ make/break
1079 case 0xfb: // set key type typematic
1080 case 0xfa: // set all typematic make/break/typematic
1081 case 0xf9: // set all make
1082 case 0xf8: // set all make/break
1083 case 0xf7: // set all typemaktic
1084 case 0xf6: // set defaults
1085 case 0xf3: // set typematic delay/rate
1086 PrintDebug("keyboard: unhandled known command 0x%x on output buffer (60h)\n", data);
1089 PrintDebug("keyboard: unhandled unknown command 0x%x on output buffer (60h)\n", data);
1090 state->status_byte |= 0x1;
1096 PrintDebug("keyboard: unknown state %x on command 0x%x on output buffer (60h)\n", state->state, data);
1102 int keyboard_read_input(ushort_t port,
1105 struct vm_device * dev)
1107 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
1113 PrintDebug("keyboard: read from input (60h): ");
1115 if (state->state == IN_MOUSE) {
1116 done_mouse = mouse_read_input(dev);
1118 state->state = NORMAL;
1122 PullFromOutputQueue(dev, &data);
1124 if (state->state == RESET) {
1125 // We just delivered the ack for the reset
1126 // now we will ready ourselves to deliver the BAT code (success)
1127 PushToOutputQueue(dev, 0xaa, OVERWRITE, COMMAND, KEYBOARD);
1128 state->state = NORMAL;
1129 PrintDebug(" (in reset, pushing BAT test code 0xaa) ");
1132 PrintDebug("0x%x\n", data);
1134 *((uchar_t*)dest) = data;
1138 PrintError("keyboard: unknown size read from input (60h)\n");
1144 int keyboard_interrupt(uint_t irq, struct vm_device * dev)
1146 PrintDebug("keyboard: interrupt 0x%x\n", irq);
1148 dev->vm->vm_ops.raise_irq(dev->vm, irq);
1155 int keyboard_init_device(struct vm_device * dev)
1158 // struct keyboard_internal *data = (struct keyboard_internal *) dev->private_data;
1160 PrintDebug("keyboard: init_device\n");
1162 // Would read state here
1164 keyboard_reset_device(dev);
1167 dev_hook_io(dev, KEYBOARD_64H, &keyboard_read_status, &keyboard_write_command);
1168 dev_hook_io(dev, KEYBOARD_60H, &keyboard_read_input, &keyboard_write_output);
1170 #if KEYBOARD_DEBUG_80H
1171 dev_hook_io(dev, KEYBOARD_DELAY_80H, &keyboard_read_delay, &keyboard_write_delay);
1176 // We do not hook the IRQ here. Instead, the underlying device driver
1177 // is responsible to call us back
1183 int keyboard_deinit_device(struct vm_device *dev)
1186 dev_unhook_io(dev, KEYBOARD_60H);
1187 dev_unhook_io(dev, KEYBOARD_64H);
1188 #if KEYBOARD_DEBUG_80H
1189 dev_unhook_io(dev, KEYBOARD_DELAY_80H);
1191 keyboard_reset_device(dev);
1199 static struct vm_device_ops dev_ops = {
1200 .init = keyboard_init_device,
1201 .deinit = keyboard_deinit_device,
1202 .reset = keyboard_reset_device,
1203 .start = keyboard_start_device,
1204 .stop = keyboard_stop_device,
1210 struct vm_device *create_keyboard() {
1212 if (thekeyboard != NULL) {
1213 PrintDebug("keyboard: creating >1 keyboard device. This will probably fail!\n");
1216 struct keyboard_internal * keyboard_state = (struct keyboard_internal *)V3_Malloc(sizeof(struct keyboard_internal));
1218 struct vm_device *device = create_device("KEYBOARD", &dev_ops, keyboard_state);
1220 thekeyboard = device;