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
341 int keyboard_interrupt(uint_t irq, struct vm_device * dev) {
342 PrintDebug("keyboard: interrupt 0x%x\n", irq);
344 dev->vm->vm_ops.raise_irq(dev->vm, irq);
350 void deliver_key_to_vmm(uchar_t status, uchar_t scancode)
352 struct vm_device *dev = demultiplex_injected_key(status, scancode);
353 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
355 PrintDebug("keyboard: injected status 0x%x, and scancode 0x%x\n", status, scancode);
357 if ( (state->status_byte & STATUS_ENABLED) // onboard is enabled
358 && (!(state->cmd_byte & CMD_DISABLE)) ) { // keyboard is enabled
360 PushToOutputQueue(dev, scancode, OVERWRITE, DATA, KEYBOARD);
362 if (state->cmd_byte & CMD_INTR) {
363 keyboard_interrupt(KEYBOARD_IRQ, dev);
370 void deliver_mouse_to_vmm(uchar_t data[3])
372 struct vm_device * dev = demultiplex_injected_mouse(data);
373 struct keyboard_internal * state = (struct keyboard_internal *)(dev->private_data);
375 PrintDebug("keyboard: injected mouse packet 0x %x %x %x\n",
376 data[0], data[1], data[2]);
378 memcpy(state->mouse_packet, data, 3);
380 state->status_byte |= STATUS_MOUSE_BUFFER_FULL;
383 switch (state->mouse_state) {
387 if (!(state->cmd_byte & CMD_MOUSE_DISABLE)) {
388 keyboard_interrupt(MOUSE_IRQ, dev);
398 int keyboard_reset_device(struct vm_device * dev)
400 struct keyboard_internal *data = (struct keyboard_internal *)(dev->private_data);
402 memset(data, 0, sizeof(struct keyboard_internal));
404 data->state = NORMAL;
405 data->mouse_state = STREAM1;
408 CMD_INTR // interrupts on
409 | CMD_MOUSE_INTR // mouse interupts on
410 | CMD_SYSTEM ; // self test passed
411 // PS2, keyboard+mouse enabled, generic translation
414 STATUS_SYSTEM // self-tests passed
415 | STATUS_ENABLED ; // keyboard ready
416 // buffers empty, no errors
418 data->output_byte = 0; // ?
420 data->input_byte = INPUT_RAM; // we have some
421 // also display=color, jumper 0, keyboard enabled
425 PrintDebug("keyboard: reset device\n");
433 int keyboard_start_device(struct vm_device *dev)
435 PrintDebug("keyboard: start device\n");
440 int keyboard_stop_device(struct vm_device *dev)
442 PrintDebug("keyboard: stop device\n");
447 int mouse_read_input(struct vm_device *dev)
449 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
451 if (state->mouse_needs_ack) {
452 state->mouse_needs_ack = 0;
454 // the ack has been stuffed previously
455 if (state->mouse_done_after_ack) {
462 switch (state->mouse_state) {
464 case RESET1: // requesting the BAT code
465 PushToOutputQueue(dev, 0xaa, OVERWRITE, DATA, MOUSE) ; // BAT successful
466 PrintDebug(" mouse sent BAT code (sucesssful) ");
467 state->mouse_state = RESET2;
469 return 0; // not done with mouse processing yet
472 case RESET2: // requesting the device id
473 PushToOutputQueue(dev, 0x00, OVERWRITE, DATA, MOUSE) ; // normal mouse type
474 PrintDebug(" mouse sent device id ");
475 state->mouse_state = STREAM1;
477 return 1; // done with mouse processing
480 case STREAM1: // send data
481 PushToOutputQueue(dev, state->mouse_packet[0], OVERWRITE, DATA, MOUSE);
482 PrintDebug(" mouse sent stream data1 ");
483 state->mouse_state = STREAM2;
488 case STREAM2: // send data
489 PushToOutputQueue(dev, state->mouse_packet[1], OVERWRITE, DATA, MOUSE);
490 PrintDebug(" mouse sent stream data2 ");
491 state->mouse_state = STREAM3;
496 case STREAM3: // send data
497 PushToOutputQueue(dev, state->mouse_packet[2], OVERWRITE, DATA, MOUSE);
498 PrintDebug(" mouse sent stream data3 ");
499 state->mouse_state = STREAM1;
501 return 1; // now done
504 case REMOTE1: // send data
505 PushToOutputQueue(dev, state->mouse_packet[0], OVERWRITE, DATA, MOUSE);
506 PrintDebug(" mouse sent remote data1 ");
507 state->mouse_state = REMOTE2;
512 case REMOTE2: // send data
513 PushToOutputQueue(dev, state->mouse_packet[1], OVERWRITE, DATA, MOUSE);
514 PrintDebug(" mouse sent remote data2 ");
515 state->mouse_state = REMOTE3;
520 case REMOTE3: // send data
521 PushToOutputQueue(dev, state->mouse_packet[2], OVERWRITE, DATA, MOUSE);
522 PrintDebug(" mouse sent remote data3 ");
523 state->mouse_state = REMOTE1;
525 return 1; // now done
528 case STATUS1: // send data
529 PushToOutputQueue(dev, 0x0, OVERWRITE, DATA, MOUSE);
530 PrintDebug(" mouse sent status data1 ");
531 state->mouse_state = STATUS2;
536 case STATUS2: // send data
537 PushToOutputQueue(dev, 0x0, OVERWRITE, DATA, MOUSE);
538 PrintDebug(" mouse sent status data2 ");
539 state->mouse_state = STATUS3;
544 case STATUS3: // send data
545 PushToOutputQueue(dev, 0x0, OVERWRITE, DATA, MOUSE);
546 PrintDebug(" mouse sent status data3 ");
547 state->mouse_state = STREAM1;
549 return 1; // now done
552 case DEVICE1: // send device id
553 PushToOutputQueue(dev, 0x0, OVERWRITE, DATA, MOUSE);
554 PrintDebug(" mouse sent device id ");
555 state->mouse_state = STREAM1;
557 return 1; // now done
561 PrintDebug(" mouse has no data ");
567 int mouse_write_output(struct vm_device * dev, uchar_t data)
569 struct keyboard_internal * state = (struct keyboard_internal *)(dev->private_data);
571 switch (state->mouse_state) {
581 PushToOutputQueue(dev, 0xfe, OVERWRITE, DATA, MOUSE) ; // no mouse!
582 PrintDebug(" mouse reset begins (no mouse) ");
584 return 1; // not done;
589 PushToOutputQueue(dev,0xfa,OVERWRITE,DATA,MOUSE) ;
590 PrintDebug(" mouse reset begins ");
591 state->mouse_done_after_ack=0;
592 state->mouse_needs_ack=1;
593 state->mouse_state=RESET1;
594 return 0; // not done;
598 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
599 PrintDebug(" mouse resend begins ");
600 state->mouse_done_after_ack = 0;
601 state->mouse_needs_ack = 0;
602 state->mouse_state = STREAM1;
603 return 0; // not done
606 case 0xf6: // set defaults
607 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
608 PrintDebug(" mouse set defaults ");
609 state->mouse_done_after_ack = 1;
610 state->mouse_needs_ack = 1;
611 state->mouse_state = STREAM1;
612 return 0; // not done
615 case 0xf5: // disable data reporting
616 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
617 state->mouse_done_after_ack = 1;
618 state->mouse_needs_ack = 1;
619 PrintDebug(" mouse disable data reporting ");
620 state->mouse_state = STREAM1;
621 return 0; // not done
624 case 0xf4: // enable data reporting
625 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
626 state->mouse_done_after_ack = 1;
627 state->mouse_needs_ack = 1;
628 PrintDebug(" mouse enable data reporting ");
629 state->mouse_state = STREAM1;
630 return 0; // not done
633 case 0xf3: // set sample rate
634 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
635 state->mouse_done_after_ack = 0;
636 state->mouse_needs_ack = 1;
637 PrintDebug(" mouse set sample rate begins ");
638 state->mouse_state = SAMPLE1;
639 return 0; // not done
642 case 0xf2: // get device id
643 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
644 state->mouse_done_after_ack = 0;
645 state->mouse_needs_ack = 1;
646 PrintDebug(" mouse get device id begins ");
647 state->mouse_state = DEVICE1;
648 return 0; // not done
651 case 0xf0: // set remote mode
652 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
653 state->mouse_done_after_ack = 1;
654 state->mouse_needs_ack = 1;
655 PrintDebug(" mouse set remote mode ");
656 state->mouse_state = REMOTE1;
657 return 0; // not done
660 case 0xee: // set wrap mode
661 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
662 state->mouse_done_after_ack = 1;
663 state->mouse_needs_ack = 1;
664 PrintDebug(" mouse set wrap mode (ignored) ");
665 state->mouse_state = STREAM1;
666 return 0; // not done
669 case 0xec: // reset wrap mode
670 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
671 state->mouse_done_after_ack = 1;
672 state->mouse_needs_ack = 1;
673 PrintDebug(" mouse reset wrap mode (ignored) ");
674 state->mouse_state = STREAM1;
678 case 0xeb: // read data
679 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
680 state->mouse_done_after_ack = 0;
681 state->mouse_needs_ack = 1;
682 PrintDebug(" mouse switch to wrap mode (ignored) ");
683 state->mouse_state = REMOTE1;
684 return 0; // not done
687 case 0xea: // set stream mode
688 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
689 state->mouse_done_after_ack = 1;
690 state->mouse_needs_ack = 1;
691 PrintDebug(" mouse set stream mode ");
692 state->mouse_state = STREAM1;
693 return 0; // not done
696 case 0xe9: // status request
697 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
698 state->mouse_done_after_ack = 0;
699 state->mouse_needs_ack = 1;
700 PrintDebug(" mouse status request begins ");
701 state->mouse_state = STATUS1;
705 case 0xe8: // set resolution
706 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
707 state->mouse_done_after_ack = 0;
708 state->mouse_needs_ack = 1;
709 PrintDebug(" mouse set resolution begins ");
710 state->mouse_state = SETRES1;
714 case 0xe7: // set scaling 2:1
715 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
716 state->mouse_done_after_ack = 1;
717 state->mouse_needs_ack = 1;
718 PrintDebug(" mouse set scaling 2:1 ");
719 state->mouse_state = STREAM1;
720 return 0; // not done
723 case 0xe6: // set scaling 1:1
724 PushToOutputQueue(dev, 0xfa, OVERWRITE, DATA, MOUSE) ;
725 state->mouse_done_after_ack = 1;
726 state->mouse_needs_ack = 1;
727 PrintDebug(" mouse set scaling 1:1 ");
728 state->mouse_state = STREAM1;
733 PrintDebug(" receiving unknown mouse command (0x%x) in acceptable state ", data);
740 PrintDebug(" receiving mouse output in unhandled state (0x%x) ", state->mouse_state);
746 PrintDebug(" HUH? ");
752 #if KEYBOARD_DEBUG_80H
753 int keyboard_write_delay(ushort_t port,
756 struct vm_device * dev)
760 PrintDebug("keyboard: write of 0x%x to 80h\n", *((uchar_t*)src));
764 PrintDebug("keyboard: write of >1 byte to 80h\n", *((uchar_t*)src));
770 int keyboard_read_delay(ushort_t port,
773 struct vm_device * dev)
777 *((uchar_t*)dest) = v3_inb(port);
779 PrintDebug("keyboard: read of 0x%x from 80h\n", *((uchar_t*)dest));
783 PrintDebug("keyboard: read of >1 byte from 80h\n");
794 int keyboard_write_command(ushort_t port,
797 struct vm_device * dev)
799 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
802 // Should always be single byte write
805 PrintError("keyboard: write of >1 bytes (%d) to 64h\n", length);
809 cmd = *((uchar_t*)src);
811 if (state->state != NORMAL) {
812 PrintDebug("keyboard: warning - receiving command on 64h but state != NORMAL\n");
815 PrintDebug("keyboard: command 0x%x on 64h\n", cmd);
819 case 0x20: // READ COMMAND BYTE (returned in 60h)
820 PushToOutputQueue(dev, state->cmd_byte, OVERWRITE, COMMAND,KEYBOARD);
821 state->state = NORMAL; // the next read on 0x60 will get the right data
822 PrintDebug("keyboard: command byte 0x%x returned\n", state->cmd_byte);
825 case 0x60: // WRITE COMMAND BYTE (read from 60h)
826 state->state = WRITING_CMD_BYTE; // we need to make sure we send the next 0x60 byte appropriately
827 PrintDebug("keyboard: prepare to write command byte\n");
830 // case 0x90-9f - write to output port (?)
832 case 0xa1: // Get version number
833 PushToOutputQueue(dev, 0, OVERWRITE, COMMAND, KEYBOARD);
834 state->state = NORMAL;
835 PrintDebug("keyboard: version number 0x0 returned\n");
838 case 0xa4: // is password installed? send result to 0x60
839 // we don't support passwords
840 PushToOutputQueue(dev, 0xf1, OVERWRITE, COMMAND, KEYBOARD);
841 PrintDebug("keyboard: password not installed\n");
842 state->state = NORMAL;
845 case 0xa5: // new password will arrive on 0x60
846 state->state = TRANSMIT_PASSWD;
847 PrintDebug("keyboard: pepare to transmit password\n");
850 case 0xa6: // check passwd;
851 // since we do not support passwords, we will simply ignore this
852 // the implication is that any password check immediately succeeds
853 // with a blank password
854 state->state = NORMAL;
855 PrintDebug("keyboard: password check succeeded\n");
858 case 0xa7: // disable mouse
859 state->cmd_byte |= CMD_MOUSE_DISABLE;
860 state->state = NORMAL;
861 PrintDebug("keyboard: mouse disabled\n");
864 case 0xa8: // enable mouse
865 state->cmd_byte &= ~CMD_MOUSE_DISABLE;
866 state->state = NORMAL;
867 PrintDebug("keyboard: mouse enabled\n");
870 case 0xa9: // mouse interface test (always succeeds)
871 PushToOutputQueue(dev, 0, OVERWRITE, COMMAND, KEYBOARD);
872 PrintDebug("keyboard: mouse interface test succeeded\n");
873 state->state = NORMAL;
876 case 0xaa: // controller self test (always succeeds)
877 PushToOutputQueue(dev, 0x55, OVERWRITE, COMMAND, KEYBOARD);
878 PrintDebug("keyboard: controller self test succeeded\n");
879 state->state = NORMAL;
882 case 0xab: // keyboard interface test (always succeeds)
883 PushToOutputQueue(dev, 0, OVERWRITE, COMMAND, KEYBOARD);
884 state->state = NORMAL;
885 PrintDebug("keyboard: keyboard interface test succeeded\n");
888 case 0xad: // disable keyboard
889 state->cmd_byte |= CMD_DISABLE;
890 state->state = NORMAL;
891 PrintDebug("keyboard: keyboard disabled\n");
894 case 0xae: // enable keyboard
895 state->cmd_byte &= ~CMD_DISABLE;
896 state->state = NORMAL;
897 PrintDebug("keyboard: keyboard enabled\n");
900 case 0xaf: // get version
901 PushToOutputQueue(dev, 0x00, OVERWRITE, COMMAND, KEYBOARD);
902 state->state = NORMAL;
903 PrintDebug("keyboard: version 0 returned \n");
906 case 0xd0: // return microcontroller output on 60h
907 PushToOutputQueue(dev, state->output_byte, OVERWRITE, COMMAND, KEYBOARD);
908 state->state = NORMAL;
909 PrintDebug("keyboard: output byte 0x%x returned\n", state->output_byte);
912 case 0xd1: // request to write next byte on 60h to the microcontroller output port
913 state->state = WRITING_OUTPUT_PORT;
914 PrintDebug("keyboard: prepare to write output byte\n");
917 case 0xd2: // write keyboard buffer (inject key)
918 state->state = INJECTING_KEY;
919 PrintDebug("keyboard: prepare to inject key\n");
922 case 0xd3: // write mouse buffer (inject mouse)
923 state->state = INJECTING_MOUSE;
924 PrintDebug("keyboard: prepare to inject mouse\n");
927 case 0xd4: // write mouse device (command to mouse?)
928 state->state = IN_MOUSE;
929 PrintDebug("keyboard: prepare to inject mouse command\n");
932 case 0xc0: // read input port
933 PushToOutputQueue(dev, state->input_byte, OVERWRITE, COMMAND, KEYBOARD);
934 state->state = NORMAL;
935 PrintDebug("keyboard: input byte 0x%x returned\n", state->input_byte);
938 case 0xc1: //copy input port lsn to status msn
939 state->status_byte &= 0x0f;
940 state->status_byte |= (state->input_byte & 0xf) << 4;
941 state->state = NORMAL;
942 PrintDebug("keyboard: copied input byte lsn to status msn\n");
945 case 0xc2: // copy input port msn to status msn
946 state->status_byte &= 0x0f;
947 state->status_byte |= (state->input_byte & 0xf0);
948 state->state = NORMAL;
949 PrintDebug("keyboard: copied input byte msn to status msn\n");
952 case 0xe0: // read test port
953 PushToOutputQueue(dev, state->output_byte >> 6, OVERWRITE, COMMAND, KEYBOARD);
954 state->state = NORMAL;
955 PrintDebug("keyboard: read 0x%x from test port\n", state->output_byte >> 6);
959 case 0xf0: // pulse output port
960 case 0xf1: // this should pulse 0..3 of cmd_byte on output port
961 case 0xf2: // instead of what is currently in output_byte (I think)
962 case 0xf3: // main effect is taht if bit zero is zero
963 case 0xf4: // should cause reset
964 case 0xf5: // I doubt anything more recent than a 286 running
965 case 0xf6: // OS2 with the penalty box will care
976 PrintDebug("keyboard: ignoring pulse of 0x%x (low=pulsed) on output port\n", (cmd & 0xf));
977 state->state = NORMAL;
981 // case ac diagonstic - returns 16 bytes from keyboard microcontroler on 60h
983 PrintDebug("keyboard: ignoring command (unimplemented)\n");
984 state->state = NORMAL;
992 int keyboard_read_status(ushort_t port,
995 struct vm_device * dev)
997 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
1001 PrintDebug("keyboard: read status (64h): ");
1003 *((uchar_t*)dest) = state->status_byte;
1005 PrintDebug("0x%x\n", *((uchar_t*)dest));
1009 PrintError("keyboard: >1 byte read for status (64h)\n");
1014 int keyboard_write_output(ushort_t port,
1017 struct vm_device * dev)
1019 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
1022 PrintError("keyboard: write of 60h with >1 byte\n");
1026 uchar_t data = *((uchar_t*)src);
1028 PrintDebug("keyboard: output 0x%x on 60h\n", data);
1030 switch (state->state) {
1031 case WRITING_CMD_BYTE:
1032 state->cmd_byte = data;
1033 state->state = NORMAL;
1034 PrintDebug("keyboard: wrote new command byte 0x%x\n", state->cmd_byte);
1036 case WRITING_OUTPUT_PORT:
1037 state->output_byte = data;
1038 state->state = NORMAL;
1039 PrintDebug("keyboard: wrote new output byte 0x%x\n", state->output_byte);
1042 PushToOutputQueue(dev, data, OVERWRITE, COMMAND, KEYBOARD); // probably should be a call to deliver_key_to_vmm()
1043 state->state = NORMAL;
1044 PrintDebug("keyboard: injected key 0x%x\n", data);
1046 case INJECTING_MOUSE:
1047 PrintDebug("keyboard: ignoring injected mouse event 0x%x\n", data);
1048 state->state = NORMAL;
1051 PrintDebug("keyboard: mouse action: ");
1052 if (mouse_write_output(dev, data)) {
1053 state->state = NORMAL;
1057 case TRANSMIT_PASSWD:
1060 PrintDebug("keyboard: ignoring password character 0x%x\n",data);
1063 state->state = NORMAL;
1064 PrintDebug("keyboard: done with password\n");
1069 // command is being sent to keyboard controller
1072 PushToOutputQueue(dev, 0xfa, OVERWRITE, COMMAND, KEYBOARD); // ack
1073 state->state = RESET;
1074 PrintDebug("keyboard: reset complete and acked\n", data);
1076 case 0xf5: // disable scanning
1077 case 0xf4: // enable scanning
1079 PushToOutputQueue(dev, 0xfa, OVERWRITE, COMMAND, KEYBOARD);
1080 // should do something here... PAD
1081 state->state = NORMAL;
1082 PrintDebug("keyboard: %s scanning done and acked\n",data==0xf5 ? "disable" : "enable", data);
1084 case 0xfe: // resend
1085 case 0xfd: // set key type make
1086 case 0xfc: // set key typ make/break
1087 case 0xfb: // set key type typematic
1088 case 0xfa: // set all typematic make/break/typematic
1089 case 0xf9: // set all make
1090 case 0xf8: // set all make/break
1091 case 0xf7: // set all typemaktic
1092 case 0xf6: // set defaults
1093 case 0xf3: // set typematic delay/rate
1094 PrintDebug("keyboard: unhandled known command 0x%x on output buffer (60h)\n", data);
1097 PrintDebug("keyboard: unhandled unknown command 0x%x on output buffer (60h)\n", data);
1098 state->status_byte |= 0x1;
1104 PrintDebug("keyboard: unknown state %x on command 0x%x on output buffer (60h)\n", state->state, data);
1110 int keyboard_read_input(ushort_t port,
1113 struct vm_device * dev)
1115 struct keyboard_internal *state = (struct keyboard_internal *)(dev->private_data);
1121 PrintDebug("keyboard: read from input (60h): ");
1123 if (state->state == IN_MOUSE) {
1124 done_mouse = mouse_read_input(dev);
1126 state->state = NORMAL;
1130 PullFromOutputQueue(dev, &data);
1132 if (state->state == RESET) {
1133 // We just delivered the ack for the reset
1134 // now we will ready ourselves to deliver the BAT code (success)
1135 PushToOutputQueue(dev, 0xaa, OVERWRITE, COMMAND, KEYBOARD);
1136 state->state = NORMAL;
1137 PrintDebug(" (in reset, pushing BAT test code 0xaa) ");
1140 PrintDebug("0x%x\n", data);
1142 *((uchar_t*)dest) = data;
1146 PrintError("keyboard: unknown size read from input (60h)\n");
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;