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 <palacios/vmm.h>
21 #include <palacios/vmm_dev_mgr.h>
22 #include <palacios/vmm_types.h>
24 #include <palacios/vmm_ringbuffer.h>
25 #include <palacios/vmm_lock.h>
26 #include <palacios/vmm_intr.h>
27 #include <palacios/vmm_host_events.h>
28 #include <palacios/vm_guest.h>
29 #include <palacios/vmm_debug.h>
32 #ifndef V3_CONFIG_DEBUG_KEYBOARD
34 #define PrintDebug(fmt, args...)
37 #define KEYBOARD_DEBUG_80H 0
41 #define KEYBOARD_60H 0x60 // keyboard microcontroller
42 #define KEYBOARD_64H 0x64 // onboard microcontroller
44 #define KEYBOARD_DELAY_80H 0x80 // written for timing
46 #define KEYBOARD_IRQ 0x1
51 // bits for the output port
52 #define OUTPUT_RESET 0x01 // System reset on 0
53 #define OUTPUT_A20 0x02 // A20 gate (1= A20 is gated)
54 #define OUTPUT_RES1 0x04 // reserved
55 #define OUTPUT_RES2 0x08 // reserved
56 #define OUTPUT_OUTPUT_FULL 0x10 // output buffer full
57 #define OUTPUT_INPUT_EMPTY 0x20 // input buffer empty
58 #define OUTPUT_KBD_CLOCK 0x40 // keyboard clock (?)
59 #define OUTPUT_KBD_DATA 0x80 // keyboard data
61 // bits for the input port
63 #define INPUT_RES0 0x01 // reserved
64 #define INPUT_RES1 0x02 // reserved
65 #define INPUT_RES2 0x04 // reserved
66 #define INPUT_RES3 0x08 // reserved
67 #define INPUT_RAM 0x10 // set to 1 if RAM exists?
68 #define INPUT_JUMPER 0x20 // manufacturing jumper?
69 #define INPUT_DISPLAY 0x40 // 0=color, 1=mono
70 #define INPUT_KBD_INHIBIT 0x80 // 1=inhibit keyboard ?
73 #define MOUSE_ACK 0xfa
75 // for queue operations
79 // for queue operations - whether it's data or cmd waiting on 60h
83 // for queue operations - whether this is keyboard or mouse data on 60h
93 uint8_t irq_en : 1; // 1=interrupts enabled
94 uint8_t mouse_irq_en : 1; // 1=interrupts enabled for mouse
95 uint8_t self_test_ok : 1; // 1= self test passed
96 uint8_t override : 1; // MBZ for PS2
97 uint8_t disable : 1; // 1=disabled keyboard
98 uint8_t mouse_disable : 1; // 1=disabled mouse
99 uint8_t translate : 1; // 1=translate to set 1 scancodes (For PC Compatibility)
100 uint8_t rsvd : 1; // must be zero
101 } __attribute__((packed));
102 } __attribute__((packed));
103 } __attribute__((packed));
112 uint8_t out_buf_full : 1; // 1=full (data for system)
113 uint8_t in_buf_full : 1; // 1=full (data for 8042)
114 uint8_t self_test_ok : 1; // 1=self-test-passed
115 uint8_t cmd : 1; // 0=data on 60h, 1=cmd on 64h
116 uint8_t enabled : 1; // 1=keyboard is enabled
117 uint8_t mouse_buf_full : 1; // 1= mouse output buffer full
118 uint8_t timeout_err : 1; // 1=timeout of keybd
119 uint8_t parity_err : 1; // 1=parity error
120 } __attribute__((packed));
121 } __attribute__((packed));
122 } __attribute__((packed));
129 /* This QUEUE_SIZE must be 256 */
130 /* Its designed this way to cause the start/end index to automatically
131 wrap around (2^8 = 256) so an overrun will automatically readjust the
134 #define QUEUE_SIZE 256
136 uint8_t queue[QUEUE_SIZE];
143 struct keyboard_internal {
145 // 0x60 is the port for the keyboard microcontroller
146 // writes are commands
147 // reads from it usually return scancodes
148 // however, it can also return other data
149 // depending on the state of the onboard microcontroller
151 // 0x64 is the port for the onboard microcontroller
152 // writes are commands
156 // state of the onboard microcontroller
157 // this is needed because sometimes 0x60 reads come
158 // from the onboard microcontroller
159 enum {// Normal mode measn we deliver keys
160 // to the vm and accept commands from it
162 // after receiving cmd 0x60
163 // keybaord uC cmd will subsequently arrive
165 // after recieving 0xa5
166 // password arrives on data port, null terminated
168 // after having a d1 sent to 64
169 // we wait for a new output byte on 60
171 // after having a d2 sent to 64
172 // we wait for a new output byte on 60
173 // then make it available as a keystroke
175 // after having a d3 sent to 64
176 // we wait for a new output byte on 60
177 // then make it available as a mouse event
179 // after having a d4 sent to 64
180 // we wait for a new output byte on 60
181 // then send it to the mouse
183 // After the Keyboard LEDs are enabled
184 // we wait for the output byte on 64?
186 // After the Keyboard SET_RATE is called
187 // we wait for the output byte on 64?
189 // after having a f0 sent to 60
190 // we wait for a new output byte on 60
192 // first send ACK (0xfa)
193 // then wait for reception, and reset kb state
199 // Normal mouse state
201 // this is used for setting sample rate
210 struct status_reg status;
212 uint8_t output_byte; // output port of onboard uC (e.g. A20)
213 uint8_t input_byte; // input port of onboard uC
218 uint8_t mouse_enabled;
219 uint8_t scancode_set;
221 struct queue kbd_queue;
222 struct queue mouse_queue;
224 struct v3_vm_info * vm;
230 static int keyboard_reset_device(struct keyboard_internal * kbd);
233 static int update_kb_irq(struct keyboard_internal * state) {
237 state->status.out_buf_full = 0;
238 state->status.mouse_buf_full = 0;
241 // If there is pending Keyboard data then it overrides mouse data
242 if (state->kbd_queue.count > 0) {
243 irq_num = KEYBOARD_IRQ;
244 } else if (state->mouse_queue.count > 0) {
246 state->status.mouse_buf_full = 1;
249 PrintDebug(VM_NONE, VCORE_NONE, "keyboard: interrupt 0x%d\n", irq_num);
252 // Global output buffer flag (for both Keyboard and mouse)
253 state->status.out_buf_full = 1;
255 if (state->cmd.irq_en == 1) {
256 v3_raise_irq(state->vm, irq_num);
265 /* Only one byte is read per irq
266 * So if the queue is still full after a data read, we re-raise the irq
267 * If we keep reading an empty queue we return the last queue entry
270 static int push_to_output_queue(struct keyboard_internal * state, uint8_t value, uint8_t cmd, uint8_t mouse) {
271 struct queue * q = NULL;
275 q = &(state->mouse_queue);
277 q = &(state->kbd_queue);
280 if (q->count >= QUEUE_SIZE) {
285 state->status.cmd = 1;
287 state->status.cmd = 0;
290 q->queue[q->end] = value;
292 if (q->end >= (QUEUE_SIZE - 1)) {
301 update_kb_irq(state);
308 static int pull_from_output_queue(struct keyboard_internal * state, uint8_t * value) {
309 struct queue * q = NULL;
311 if (state->kbd_queue.count > 0) {
312 q = &(state->kbd_queue);
313 PrintDebug(VM_NONE, VCORE_NONE, "Reading from Keyboard Queue\n");
314 } else if (state->mouse_queue.count > 0) {
315 q = &(state->mouse_queue);
316 PrintDebug(VM_NONE, VCORE_NONE, "Reading from Mouse Queue\n");
318 uint8_t idx = state->kbd_queue.start - 1;
319 PrintDebug(VM_NONE, VCORE_NONE, "No Data in any queue\n");
320 *value = state->kbd_queue.queue[idx];
324 *value = q->queue[q->start];
326 if (q->start >= (QUEUE_SIZE - 1)) {
335 PrintDebug(VM_NONE, VCORE_NONE, "Read from Queue: %x\n", *value);
336 PrintDebug(VM_NONE, VCORE_NONE, "QStart=%d, QEnd=%d\n", q->start, q->end);
338 update_kb_irq(state);
344 #include <palacios/vmm_telemetry.h>
345 #ifdef V3_CONFIG_SYMMOD
346 #include <palacios/vmm_symmod.h>
349 static int key_event_handler(struct v3_vm_info * vm,
350 struct v3_keyboard_event * evt,
351 void * private_data) {
352 struct keyboard_internal * state = (struct keyboard_internal *)private_data;
354 PrintDebug(vm, VCORE_NONE, "keyboard: injected status 0x%x, and scancode 0x%x\n", evt->status, evt->scan_code);
356 if (evt->scan_code == 0x44) { // F10 debug dump
358 for (i = 0; i < vm->num_cores; i++) {
359 v3_print_guest_state(&(vm->cores[i]));
361 // PrintGuestPageTables(info, info->shdw_pg_state.guest_cr3);
363 #ifdef V3_CONFIG_SYMCALL
364 else if (evt->scan_code == 0x43) { // F9 Sym test
365 struct guest_info * core = &(vm->cores[0]);
366 PrintDebug(vm, VCORE_NONE, "Testing sym call\n");
367 sym_arg_t a0 = 0x1111;
368 sym_arg_t a1 = 0x2222;
369 sym_arg_t a2 = 0x3333;
370 sym_arg_t a3 = 0x4444;
371 sym_arg_t a4 = 0x5555;
372 uint64_t call_start = 0;
373 uint64_t call_end = 0;
375 V3_Print(vm, VCORE_NONE, "Exits before symcall: %d\n", (uint32_t)core->num_exits);
378 v3_sym_call5(core, SYMCALL_TEST, &a0, &a1, &a2, &a3, &a4);
381 V3_Print(vm, VCORE_NONE, "Symcall latency = %d cycles (%d exits)\n", (uint32_t)(call_end - call_start), (uint32_t)core->num_exits);
383 V3_Print(vm, VCORE_NONE, "Symcall Test Returned arg0=%x, arg1=%x, arg2=%x, arg3=%x, arg4=%x\n",
384 (uint32_t)a0, (uint32_t)a1, (uint32_t)a2, (uint32_t)a3, (uint32_t)a4);
388 else if (evt->scan_code == 0x42) { // F8 debug toggle
389 extern int v3_dbg_enable;
391 PrintDebug(vm, VCORE_NONE, "Toggling Debugging\n");
395 #ifdef V3_CONFIG_TELEMETRY
397 else if (evt->scan_code == 0x41) { // F7 telemetry dump
398 v3_print_global_telemetry(vm);
401 #ifdef V3_CONFIG_SYMMOD
402 else if (evt->scan_code == 0x40) { // F6 Test symmod load
403 v3_load_sym_capsule(vm, "lnx_test");
408 addr_t irq_state = v3_lock_irqsave(state->kb_lock);
410 if ( (state->status.enabled == 1) // onboard is enabled
411 && (state->cmd.disable == 0) ) { // keyboard is enabled
413 push_to_output_queue(state, evt->scan_code, DATA, KEYBOARD);
416 v3_unlock_irqrestore(state->kb_lock, irq_state);
422 static int mouse_event_handler(struct v3_vm_info * vm,
423 struct v3_mouse_event * evt,
424 void * private_data) {
425 struct keyboard_internal * kbd = (struct keyboard_internal *)private_data;
428 PrintDebug(vm, VCORE_NONE, "keyboard: injected mouse packet 0x %x %x %x\n",
429 evt->data[0], evt->data[1], evt->data[2]);
431 addr_t irq_state = v3_lock_irqsave(kbd->kb_lock);
433 switch (kbd->mouse_state) {
436 if (kbd->cmd.mouse_disable == 0) {
437 push_to_output_queue(kbd, evt->data[0], DATA, MOUSE);
438 push_to_output_queue(kbd, evt->data[1], DATA, MOUSE);
439 push_to_output_queue(kbd, evt->data[2], DATA, MOUSE);
443 PrintError(vm, VCORE_NONE, "Invalid mouse state\n");
449 v3_unlock_irqrestore(kbd->kb_lock, irq_state);
463 static int mouse_write_output(struct keyboard_internal * kbd, uint8_t data) {
464 switch (kbd->mouse_state) {
469 if (kbd->mouse_enabled == 0) {
470 push_to_output_queue(kbd, 0xfe, DATA, MOUSE) ; // no mouse!
472 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
473 push_to_output_queue(kbd, 0xaa, DATA, MOUSE) ;
474 push_to_output_queue(kbd, 0x00, DATA, MOUSE) ;
478 /* case 0xfe: //resend */
479 /* PushToOutputQueue(kbd, 0xfa, OVERWRITE, DATA, MOUSE) ; */
480 /* PrintDebug(VM_NONE, VCORE_NONE, " mouse resend begins "); */
481 /* kbd->mouse_done_after_ack = 0; */
482 /* kbd->mouse_needs_ack = 0; */
483 /* kbd->mouse_state = STREAM1; */
484 /* return 0; // not done */
487 case 0xf6: // set defaults
488 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
489 PrintDebug(VM_NONE, VCORE_NONE, " mouse set defaults ");
493 case 0xf5: // disable data reporting
494 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
495 PrintDebug(VM_NONE, VCORE_NONE, " mouse disable data reporting ");
498 case 0xf4: // enable data reporting
499 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
500 PrintDebug(VM_NONE, VCORE_NONE, " mouse enable data reporting ");
503 case 0xf3: // set sample rate
504 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
505 kbd->mouse_state = SAMPLE;
506 PrintDebug(VM_NONE, VCORE_NONE, " mouse set sample rate begins ");
509 case 0xf2: // get device id
510 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
511 push_to_output_queue(kbd, 0x0, DATA, MOUSE);
512 PrintDebug(VM_NONE, VCORE_NONE, " mouse get device id begins ");
515 case 0xf0: // set remote mode
516 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
517 PrintDebug(VM_NONE, VCORE_NONE, " mouse set remote mode ");
520 case 0xee: // set wrap mode
521 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
522 PrintError(VM_NONE, VCORE_NONE, " mouse set wrap mode (ignored) ");
525 case 0xec: // reset wrap mode
526 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
527 PrintError(VM_NONE, VCORE_NONE, " mouse reset wrap mode (ignored) ");
530 case 0xeb: // read data
531 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
532 PrintError(VM_NONE, VCORE_NONE, " mouse switch to wrap mode (ignored) ");
535 case 0xea: // set stream mode
536 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
537 PrintDebug(VM_NONE, VCORE_NONE, " mouse set stream mode ");
540 case 0xe9: // status request
541 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
542 push_to_output_queue(kbd, 0x00, DATA, MOUSE);
543 push_to_output_queue(kbd, 0x00, DATA, MOUSE);
544 push_to_output_queue(kbd, 0x00, DATA, MOUSE);
545 PrintDebug(VM_NONE, VCORE_NONE, " mouse status request begins ");
548 case 0xe8: // set resolution
549 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
550 PrintDebug(VM_NONE, VCORE_NONE, " mouse set resolution begins ");
551 kbd->mouse_state = SET_RES;
554 case 0xe7: // set scaling 2:1
555 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
556 PrintDebug(VM_NONE, VCORE_NONE, " mouse set scaling 2:1 ");
559 case 0xe6: // set scaling 1:1
560 push_to_output_queue(kbd, MOUSE_ACK, DATA, MOUSE) ;
561 PrintDebug(VM_NONE, VCORE_NONE, " mouse set scaling 1:1 ");
565 PrintDebug(VM_NONE, VCORE_NONE, " receiving unknown mouse command (0x%x) in acceptable kbd ", data);
573 PrintDebug(VM_NONE, VCORE_NONE, " receiving mouse output in unhandled kbd (0x%x) ", kbd->mouse_state);
582 #if KEYBOARD_DEBUG_80H
583 static int keyboard_write_delay(struct guest_info *core, ushort_t port, void * src, uint_t length, void * priv_data) {
586 PrintDebug(core->vm_info, core, "keyboard: write of 0x%x to 80h\n", *((uint8_t*)src));
589 PrintDebug(core->vm_info, core, "keyboard: write of >1 byte to 80h\n", *((uint8_t*)src));
594 static int keyboard_read_delay(struct guest_info * core, ushort_t port, void * dest, uint_t length, void * priv_data) {
597 *(uint8_t *)dest = v3_inb(port);
599 PrintDebug(core->vm_info, core, "keyboard: read of 0x%x from 80h\n", *((uint8_t*)dest));
603 PrintDebug(core->vm_info, core, "keyboard: read of >1 byte from 80h\n");
614 static int keyboard_write_command(struct guest_info * core, ushort_t port, void * src, uint_t length, void * priv_data) {
615 struct keyboard_internal * kbd = priv_data;
616 uint8_t cmd = *(uint8_t *)src;
618 // Should always be single byte write
620 PrintError(core->vm_info, core, "keyboard: write of >1 bytes (%d) to 64h\n", length);
625 addr_t irq_state = v3_lock_irqsave(kbd->kb_lock);
627 if (kbd->state != NORMAL) {
628 PrintDebug(core->vm_info, core, "keyboard: warning - receiving command on 64h but state != NORMAL\n");
631 PrintDebug(core->vm_info, core, "keyboard: command 0x%x on 64h\n", cmd);
634 case 0x20: // READ COMMAND BYTE (returned in 60h)
635 push_to_output_queue(kbd, kbd->cmd.val, COMMAND, KEYBOARD);
636 PrintDebug(core->vm_info, core, "keyboard: command byte 0x%x returned\n", kbd->cmd.val);
639 case 0x60: // WRITE COMMAND BYTE (read from 60h)
640 kbd->state = WRITING_CMD_BYTE; // we need to make sure we send the next 0x60 byte appropriately
641 PrintDebug(core->vm_info, core, "keyboard: prepare to write command byte\n");
644 // case 0x90-9f - write to output port (?)
646 case 0xa1: // Get version number
647 push_to_output_queue(kbd, 0x00, COMMAND, KEYBOARD);
648 PrintDebug(core->vm_info, core, "keyboard: version number 0x0 returned\n");
651 case 0xa4: // is password installed? send result to 0x60
652 // we don't support passwords
653 push_to_output_queue(kbd, 0xf1, COMMAND, KEYBOARD);
654 PrintDebug(core->vm_info, core, "keyboard: password not installed\n");
657 case 0xa5: // new password will arrive on 0x60
658 kbd->state = TRANSMIT_PASSWD;
659 PrintDebug(core->vm_info, core, "keyboard: pepare to transmit password\n");
662 case 0xa6: // check passwd;
663 // since we do not support passwords, we will simply ignore this
664 // the implication is that any password check immediately succeeds
665 // with a blank password
666 PrintDebug(core->vm_info, core, "keyboard: password check succeeded\n");
669 case 0xa7: // disable mouse
670 kbd->cmd.mouse_disable = 1;
671 PrintDebug(core->vm_info, core, "keyboard: mouse disabled\n");
674 case 0xa8: // enable mouse
675 kbd->cmd.mouse_disable = 0;
676 PrintDebug(core->vm_info, core, "keyboard: mouse enabled\n");
679 case 0xa9: // mouse interface test (always succeeds)
680 push_to_output_queue(kbd, 0x00, COMMAND, KEYBOARD);
681 PrintDebug(core->vm_info, core, "keyboard: mouse interface test succeeded\n");
684 case 0xaa: // controller self test (always succeeds)
685 push_to_output_queue(kbd, 0x55, COMMAND, KEYBOARD);
686 PrintDebug(core->vm_info, core, "keyboard: controller self test succeeded\n");
689 case 0xab: // keyboard interface test (always succeeds)
690 push_to_output_queue(kbd, 0, COMMAND, KEYBOARD);
691 PrintDebug(core->vm_info, core, "keyboard: keyboard interface test succeeded\n");
694 case 0xad: // disable keyboard
695 kbd->cmd.disable = 1;
696 PrintDebug(core->vm_info, core, "keyboard: keyboard disabled\n");
699 case 0xae: // enable keyboard
700 kbd->cmd.disable = 0;
701 PrintDebug(core->vm_info, core, "keyboard: keyboard enabled\n");
704 case 0xaf: // get version
705 push_to_output_queue(kbd, 0x00, COMMAND, KEYBOARD);
706 PrintDebug(core->vm_info, core, "keyboard: version 0 returned \n");
709 case 0xd0: // return microcontroller output on 60h
710 push_to_output_queue(kbd, kbd->output_byte, COMMAND, KEYBOARD);
711 PrintDebug(core->vm_info, core, "keyboard: output byte 0x%x returned\n", kbd->output_byte);
714 case 0xd1: // request to write next byte on 60h to the microcontroller output port
715 kbd->state = WRITING_OUTPUT_PORT;
716 PrintDebug(core->vm_info, core, "keyboard: prepare to write output byte\n");
719 case 0xd2: // write keyboard buffer (inject key)
720 kbd->state = INJECTING_KEY;
721 PrintDebug(core->vm_info, core, "keyboard: prepare to inject key\n");
724 case 0xd3: // write mouse buffer (inject mouse)
725 kbd->state = INJECTING_MOUSE;
726 PrintDebug(core->vm_info, core, "keyboard: prepare to inject mouse\n");
729 case 0xd4: // write mouse device (command to mouse?)
730 kbd->state = IN_MOUSE;
731 PrintDebug(core->vm_info, core, "keyboard: prepare to inject mouse command\n");
734 case 0xc0: // read input port
735 push_to_output_queue(kbd, kbd->input_byte, COMMAND, KEYBOARD);
736 PrintDebug(core->vm_info, core, "keyboard: input byte 0x%x returned\n", kbd->input_byte);
739 case 0xc1: //copy input port lsn to status msn
740 kbd->status.val &= 0x0f;
741 kbd->status.val |= (kbd->input_byte & 0xf) << 4;
742 PrintDebug(core->vm_info, core, "keyboard: copied input byte low 4 bits to status reg hi 4 bits\n");
745 case 0xc2: // copy input port msn to status msn
746 kbd->status.val &= 0x0f;
747 kbd->status.val |= (kbd->input_byte & 0xf0);
748 PrintDebug(core->vm_info, core, "keyboard: copied input byte hi 4 bits to status reg hi 4 bits\n");
751 case 0xe0: // read test port
752 push_to_output_queue(kbd, kbd->output_byte >> 6, COMMAND, KEYBOARD);
753 PrintDebug(core->vm_info, core, "keyboard: read 0x%x from test port\n", kbd->output_byte >> 6);
757 case 0xf0: // pulse output port
758 case 0xf1: // this should pulse 0..3 of cmd_byte on output port
759 case 0xf2: // instead of what is currently in output_byte (I think)
760 case 0xf3: // main effect is taht if bit zero is zero
761 case 0xf4: // should cause reset
762 case 0xf5: // I doubt anything more recent than a 286 running
763 case 0xf6: // OS2 with the penalty box will care
773 PrintDebug(core->vm_info, core, "keyboard: ignoring pulse of 0x%x (low=pulsed) on output port\n", (cmd & 0xf));
776 // case ac diagonstic - returns 16 bytes from keyboard microcontroler on 60h
778 PrintDebug(core->vm_info, core, "keyboard: ignoring command (unimplemented)\n");
782 v3_unlock_irqrestore(kbd->kb_lock, irq_state);
787 static int keyboard_read_status(struct guest_info * core, ushort_t port, void * dest, uint_t length, void * priv_data) {
788 struct keyboard_internal * kbd = priv_data;
791 PrintError(core->vm_info, core, "keyboard: >1 byte read for status (64h)\n");
795 PrintDebug(core->vm_info, core, "keyboard: read status (64h): ");
797 addr_t irq_state = v3_lock_irqsave(kbd->kb_lock);
799 *(uint8_t *)dest = kbd->status.val;
801 v3_unlock_irqrestore(kbd->kb_lock, irq_state);
803 PrintDebug(core->vm_info, core, "0x%x\n", *(uint8_t *)dest);
808 static int keyboard_write_output(struct guest_info * core, ushort_t port, void * src, uint_t length, void * priv_data) {
809 struct keyboard_internal * kbd = priv_data;
813 PrintError(core->vm_info, core, "keyboard: write of 60h with >1 byte\n");
817 uint8_t data = *(uint8_t *)src;
819 PrintDebug(core->vm_info, core, "keyboard: output 0x%x on 60h\n", data);
821 addr_t irq_state = v3_lock_irqsave(kbd->kb_lock);
823 switch (kbd->state) {
824 case WRITING_CMD_BYTE:
827 PrintDebug(core->vm_info, core, "keyboard: wrote new command byte 0x%x\n", kbd->cmd.val);
830 case WRITING_OUTPUT_PORT:
831 kbd->output_byte = data;
833 PrintDebug(core->vm_info, core, "keyboard: wrote new output byte 0x%x\n", kbd->output_byte);
837 push_to_output_queue(kbd, data, COMMAND, KEYBOARD); // probably should be a call to deliver_key_to_vmm()
839 PrintDebug(core->vm_info, core, "keyboard: injected key 0x%x\n", data);
842 case INJECTING_MOUSE:
843 push_to_output_queue(kbd, data, DATA, MOUSE);
844 // PrintDebug(core->vm_info, core, "keyboard: ignoring injected mouse event 0x%x\n", data);
845 PrintDebug(core->vm_info, core, "keyboard: injected mouse event 0x%x\n", data);
850 PrintDebug(core->vm_info, core, "keyboard: mouse action: ");
851 if (mouse_write_output(kbd, data)) {
854 PrintDebug(core->vm_info, core, "\n");
857 case TRANSMIT_PASSWD:
860 PrintDebug(core->vm_info, core, "keyboard: ignoring password character 0x%x\n",data);
864 PrintDebug(core->vm_info, core, "keyboard: done with password\n");
869 PrintDebug(core->vm_info, core, "Keyboard: LEDs being set...\n");
870 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
875 PrintDebug(core->vm_info, core, "Keyboard: Rate being set...\n");
876 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
880 case GETSET_SCANCODES:
883 PrintDebug(core->vm_info, core, "Keyboard: scancode set being read\n");
884 push_to_output_queue(kbd, 0x45 - 2 * kbd->scancode_set, COMMAND, KEYBOARD);
887 PrintError(core->vm_info, core, "keyboard: unsupported scancode set %d selected\n", data);
890 PrintDebug(core->vm_info, core, "Keyboard: scancode set being set to %d\n", data);
891 kbd->scancode_set = data;
892 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
895 /* OpenBSD wants scancode set 3, but falls back to 2 if a
896 * subsequent read reveals that the request was ignored
898 PrintError(core->vm_info, core, "keyboard: ignoring request for scancode set %d\n", data);
901 PrintError(core->vm_info, core, "keyboard: unknown scancode set %d selected\n", data);
910 keyboard_reset_device(kbd);
916 // command is being sent to keyboard controller
919 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD); // ack
920 push_to_output_queue(kbd, 0xaa, COMMAND, KEYBOARD);
921 PrintDebug(core->vm_info, core, "keyboard: reset complete and acked\n");
924 case 0xf5: // disable scanning
925 case 0xf4: // enable scanning
927 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
928 // should do something here... PAD
929 PrintDebug(core->vm_info, core, "keyboard: %s scanning done and acked\n", (data == 0xf5) ? "disable" : "enable");
933 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
934 kbd->state = SET_RATE;
937 case 0xf2: // get keyboard ID
938 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
939 push_to_output_queue(kbd, 0xab, COMMAND, KEYBOARD);
940 push_to_output_queue(kbd, 0x83, COMMAND, KEYBOARD);
941 PrintDebug(core->vm_info, core, "Keyboard: Requesting Keyboard ID\n");
944 case 0xed: // enable keyboard LEDs
945 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
946 kbd->state = SET_LEDS;
949 case 0xee: // echo, used by FreeBSD to probe controller
950 push_to_output_queue(kbd, 0xee, COMMAND, KEYBOARD);
953 case 0xf0: // get/set scancode set
954 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
955 kbd->state = GETSET_SCANCODES;
959 case 0xf6: // set defaults
961 // clear output buffer
962 // reset to init state
963 push_to_output_queue(kbd, 0xfa, COMMAND, KEYBOARD);
964 kbd->state = SET_DEFAULTS;
968 case 0xfd: // set key type make
969 case 0xfc: // set key typ make/break
970 case 0xfb: // set key type typematic
971 case 0xfa: // set all typematic make/break/typematic
972 case 0xf9: // set all make
973 case 0xf8: // set all make/break
974 case 0xf7: // set all typemaktic
976 PrintError(core->vm_info, core, "keyboard: unhandled known command 0x%x on output buffer (60h)\n", data);
981 PrintError(core->vm_info, core, "keyboard: unhandled unknown command 0x%x on output buffer (60h)\n", data);
982 kbd->status.out_buf_full = 1;
990 v3_unlock_irqrestore(kbd->kb_lock, irq_state);
995 static int keyboard_read_input(struct guest_info * core, ushort_t port, void * dest, uint_t length, void * priv_data) {
996 struct keyboard_internal * kbd = priv_data;
999 PrintError(core->vm_info, core, "keyboard: unknown size read from input (60h)\n");
1003 addr_t irq_state = v3_lock_irqsave(kbd->kb_lock);
1005 pull_from_output_queue(kbd, (uint8_t *)dest);
1007 v3_unlock_irqrestore(kbd->kb_lock, irq_state);
1009 PrintDebug(core->vm_info, core, "keyboard: read from input (60h): 0x%x\n", *(uint8_t *)dest);
1019 static int keyboard_free(struct keyboard_internal * kbd) {
1022 // unhook host events
1031 static int keyboard_reset_device(struct keyboard_internal * kbd) {
1034 kbd->mouse_queue.start = 0;
1035 kbd->mouse_queue.end = 0;
1036 kbd->mouse_queue.count = 0;
1038 kbd->kbd_queue.start = 0;
1039 kbd->kbd_queue.end = 0;
1040 kbd->kbd_queue.count = 0;
1042 kbd->mouse_enabled = 0;
1043 kbd->scancode_set = 2;
1045 kbd->state = NORMAL;
1046 kbd->mouse_state = STREAM;
1048 // PS2, keyboard+mouse enabled, generic translation
1051 kbd->cmd.irq_en = 1;
1052 kbd->cmd.mouse_irq_en = 1;
1053 kbd->cmd.self_test_ok = 1;
1057 // buffers empty, no errors
1058 kbd->status.val = 0;
1060 kbd->status.self_test_ok = 1; // self-tests passed
1061 kbd->status.enabled = 1;// keyboard ready
1065 kbd->output_byte = 0; // ?
1067 kbd->input_byte = INPUT_RAM; // we have some
1068 // also display=color, jumper 0, keyboard enabled
1070 PrintDebug(VM_NONE, VCORE_NONE, "keyboard: reset device\n");
1076 #ifdef V3_CONFIG_CHECKPOINT
1077 static int keyboard_save(struct v3_chkpt_ctx * ctx, void * private_data) {
1078 struct keyboard_internal * kbd = (struct keyboard_internal *)private_data;
1080 V3_CHKPT_SAVE(ctx, "CMD_REG", kbd->cmd.val, savefailout);
1081 V3_CHKPT_SAVE(ctx, "STATUS_REG", kbd->status.val, savefailout);
1082 V3_CHKPT_SAVE(ctx, "STATE", kbd->state, savefailout);
1083 V3_CHKPT_SAVE(ctx, "MOUSE_STATE", kbd->mouse_state, savefailout);
1084 V3_CHKPT_SAVE(ctx, "OUTPUT", kbd->output_byte, savefailout);
1085 V3_CHKPT_SAVE(ctx, "INPUT", kbd->input_byte, savefailout);
1086 V3_CHKPT_SAVE(ctx, "SCANCODE_SET", kbd->scancode_set, savefailout);
1087 V3_CHKPT_SAVE(ctx, "MOUSE_ENABLED", kbd->mouse_enabled, savefailout);
1093 PrintError(VM_NONE, VCORE_NONE, "Failed to save keyboard\n");
1099 static int keyboard_load(struct v3_chkpt_ctx * ctx, void * private_data) {
1100 struct keyboard_internal * kbd = (struct keyboard_internal *)private_data;
1101 keyboard_reset_device(kbd);
1103 V3_CHKPT_LOAD(ctx, "CMD_REG", kbd->cmd.val, loadfailout);
1104 V3_CHKPT_LOAD(ctx, "STATUS_REG", kbd->status.val, loadfailout);
1105 V3_CHKPT_LOAD(ctx, "STATE", kbd->state, loadfailout);
1106 V3_CHKPT_LOAD(ctx, "MOUSE_STATE", kbd->mouse_state, loadfailout);
1107 V3_CHKPT_LOAD(ctx, "OUTPUT", kbd->output_byte, loadfailout);
1108 V3_CHKPT_LOAD(ctx, "INPUT", kbd->input_byte, loadfailout);
1109 V3_CHKPT_LOAD(ctx, "SCANCODE_SET", kbd->scancode_set, loadfailout);
1110 V3_CHKPT_LOAD(ctx, "MOUSE_ENABLED", kbd->mouse_enabled, loadfailout);
1116 PrintError(VM_NONE, VCORE_NONE, "Failed to load keyboard\n");
1123 static struct v3_device_ops dev_ops = {
1124 .free = (int (*)(void *))keyboard_free,
1125 #ifdef V3_CONFIG_CHECKPOINT
1126 .save = keyboard_save,
1127 .load = keyboard_load
1134 static int keyboard_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
1135 struct keyboard_internal * kbd = NULL;
1136 char * dev_id = v3_cfg_val(cfg, "ID");
1139 PrintDebug(vm, VCORE_NONE, "keyboard: init_device\n");
1141 kbd = (struct keyboard_internal *)V3_Malloc(sizeof(struct keyboard_internal));
1144 PrintError(vm, VCORE_NONE, "Cannot allocate in init\n");
1148 memset(kbd, 0, sizeof(struct keyboard_internal));
1152 struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, kbd);
1155 PrintError(vm, VCORE_NONE, "Could not attach device %s\n", dev_id);
1160 keyboard_reset_device(kbd);
1163 v3_lock_init(&(kbd->kb_lock));
1167 ret |= v3_dev_hook_io(dev, KEYBOARD_64H, &keyboard_read_status, &keyboard_write_command);
1168 ret |= v3_dev_hook_io(dev, KEYBOARD_60H, &keyboard_read_input, &keyboard_write_output);
1171 PrintError(vm, VCORE_NONE, "Error hooking keyboard IO ports\n");
1172 v3_remove_device(dev);
1176 v3_hook_host_event(vm, HOST_KEYBOARD_EVT, V3_HOST_EVENT_HANDLER(key_event_handler), kbd);
1177 v3_hook_host_event(vm, HOST_MOUSE_EVT, V3_HOST_EVENT_HANDLER(mouse_event_handler), kbd);
1180 #if KEYBOARD_DEBUG_80H
1181 v3_dev_hook_io(dev, KEYBOARD_DELAY_80H, &keyboard_read_delay, &keyboard_write_delay);
1186 // We do not hook the IRQ here. Instead, the underlying device driver
1187 // is responsible to call us back
1194 device_register("KEYBOARD", keyboard_init)