VirtualBox

source: vbox/trunk/src/VBox/Devices/PC/DevRTC.cpp@ 78260

Last change on this file since 78260 was 76553, checked in by vboxsync, 6 years ago

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1/* $Id: DevRTC.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2/** @file
3 * Motorola MC146818 RTC/CMOS Device with PIIX4 extensions.
4 */
5
6/*
7 * Copyright (C) 2006-2019 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 * --------------------------------------------------------------------
17 *
18 * This code is based on:
19 *
20 * QEMU MC146818 RTC emulation
21 *
22 * Copyright (c) 2003-2004 Fabrice Bellard
23 *
24 * Permission is hereby granted, free of charge, to any person obtaining a copy
25 * of this software and associated documentation files (the "Software"), to deal
26 * in the Software without restriction, including without limitation the rights
27 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
28 * copies of the Software, and to permit persons to whom the Software is
29 * furnished to do so, subject to the following conditions:
30 *
31 * The above copyright notice and this permission notice shall be included in
32 * all copies or substantial portions of the Software.
33 *
34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
37 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
40 * THE SOFTWARE.
41 */
42
43
44/*********************************************************************************************************************************
45* Header Files *
46*********************************************************************************************************************************/
47#define LOG_GROUP LOG_GROUP_DEV_RTC
48#include <VBox/vmm/pdmdev.h>
49#include <VBox/log.h>
50#include <iprt/asm-math.h>
51#include <iprt/assert.h>
52#include <iprt/string.h>
53
54#ifdef IN_RING3
55# include <iprt/alloc.h>
56# include <iprt/uuid.h>
57#endif /* IN_RING3 */
58
59#include "VBoxDD.h"
60
61
62/*********************************************************************************************************************************
63* Defined Constants And Macros *
64*********************************************************************************************************************************/
65/*#define DEBUG_CMOS*/
66#define RTC_CRC_START 0x10
67#define RTC_CRC_LAST 0x2d
68#define RTC_CRC_HIGH 0x2e
69#define RTC_CRC_LOW 0x2f
70
71#define RTC_SECONDS 0
72#define RTC_SECONDS_ALARM 1
73#define RTC_MINUTES 2
74#define RTC_MINUTES_ALARM 3
75#define RTC_HOURS 4
76#define RTC_HOURS_ALARM 5
77#define RTC_ALARM_DONT_CARE 0xC0
78
79#define RTC_DAY_OF_WEEK 6
80#define RTC_DAY_OF_MONTH 7
81#define RTC_MONTH 8
82#define RTC_YEAR 9
83
84#define RTC_REG_A 10
85#define RTC_REG_B 11
86#define RTC_REG_C 12
87#define RTC_REG_D 13
88
89#define REG_A_UIP 0x80
90
91#define REG_B_SET 0x80
92#define REG_B_PIE 0x40
93#define REG_B_AIE 0x20
94#define REG_B_UIE 0x10
95
96#define CMOS_BANK_LOWER_LIMIT 0x0E
97#define CMOS_BANK_UPPER_LIMIT 0x7F
98#define CMOS_BANK2_LOWER_LIMIT 0x80
99#define CMOS_BANK2_UPPER_LIMIT 0xFF
100#define CMOS_BANK_SIZE 0x80
101
102/** The saved state version. */
103#define RTC_SAVED_STATE_VERSION 4
104/** The saved state version used by VirtualBox pre-3.2.
105 * This does not include the second 128-byte bank. */
106#define RTC_SAVED_STATE_VERSION_VBOX_32PRE 3
107/** The saved state version used by VirtualBox 3.1 and earlier.
108 * This does not include disabled by HPET state. */
109#define RTC_SAVED_STATE_VERSION_VBOX_31 2
110/** The saved state version used by VirtualBox 3.0 and earlier.
111 * This does not include the configuration. */
112#define RTC_SAVED_STATE_VERSION_VBOX_30 1
113
114
115/*********************************************************************************************************************************
116* Structures and Typedefs *
117*********************************************************************************************************************************/
118/** @todo Replace struct my_tm with RTTIME. */
119struct my_tm
120{
121 int32_t tm_sec;
122 int32_t tm_min;
123 int32_t tm_hour;
124 int32_t tm_mday;
125 int32_t tm_mon;
126 int32_t tm_year;
127 int32_t tm_wday;
128 int32_t tm_yday;
129};
130
131
132typedef struct RTCSTATE
133{
134 uint8_t cmos_data[256];
135 uint8_t cmos_index[2];
136 uint8_t Alignment0[6];
137 struct my_tm current_tm;
138 /** The configured IRQ. */
139 int32_t irq;
140 /** The configured I/O port base. */
141 RTIOPORT IOPortBase;
142 /** Use UTC or local time initially. */
143 bool fUTC;
144 /** Disabled by HPET legacy mode. */
145 bool fDisabledByHpet;
146 /* periodic timer */
147 int64_t next_periodic_time;
148 /* second update */
149 int64_t next_second_time;
150
151 /** Pointer to the device instance - R3 Ptr. */
152 PPDMDEVINSR3 pDevInsR3;
153 /** The periodic timer (rtcTimerPeriodic) - R3 Ptr. */
154 PTMTIMERR3 pPeriodicTimerR3;
155 /** The second timer (rtcTimerSecond) - R3 Ptr. */
156 PTMTIMERR3 pSecondTimerR3;
157 /** The second second timer (rtcTimerSecond2) - R3 Ptr. */
158 PTMTIMERR3 pSecondTimer2R3;
159
160 /** Pointer to the device instance - R0 Ptr. */
161 PPDMDEVINSR0 pDevInsR0;
162 /** The periodic timer (rtcTimerPeriodic) - R0 Ptr. */
163 PTMTIMERR0 pPeriodicTimerR0;
164 /** The second timer (rtcTimerSecond) - R0 Ptr. */
165 PTMTIMERR0 pSecondTimerR0;
166 /** The second second timer (rtcTimerSecond2) - R0 Ptr. */
167 PTMTIMERR0 pSecondTimer2R0;
168
169 /** Pointer to the device instance - RC Ptr. */
170 PPDMDEVINSRC pDevInsRC;
171 /** The periodic timer (rtcTimerPeriodic) - RC Ptr. */
172 PTMTIMERRC pPeriodicTimerRC;
173 /** The second timer (rtcTimerSecond) - RC Ptr. */
174 PTMTIMERRC pSecondTimerRC;
175 /** The second second timer (rtcTimerSecond2) - RC Ptr. */
176 PTMTIMERRC pSecondTimer2RC;
177
178 /** The RTC registration structure. */
179 PDMRTCREG RtcReg;
180 /** The RTC device helpers. */
181 R3PTRTYPE(PCPDMRTCHLP) pRtcHlpR3;
182 /** Number of release log entries. Used to prevent flooding. */
183 uint32_t cRelLogEntries;
184 /** The current/previous logged timer period. */
185 int32_t CurLogPeriod;
186 /** The current/previous hinted timer period. */
187 int32_t CurHintPeriod;
188 /** How many consecutive times the UIP has been seen. */
189 int32_t cUipSeen;
190
191 /** HPET legacy mode notification interface. */
192 PDMIHPETLEGACYNOTIFY IHpetLegacyNotify;
193
194 /** Number of IRQs that's been raised. */
195 STAMCOUNTER StatRTCIrq;
196 /** Number of times the timer callback handler ran. */
197 STAMCOUNTER StatRTCTimerCB;
198} RTCSTATE;
199/** Pointer to the RTC device state. */
200typedef RTCSTATE *PRTCSTATE;
201
202#ifndef VBOX_DEVICE_STRUCT_TESTCASE
203
204static void rtc_timer_update(PRTCSTATE pThis, int64_t current_time)
205{
206 int period_code, period;
207 uint64_t cur_clock, next_irq_clock;
208 uint32_t freq;
209
210 Assert(TMTimerIsLockOwner(pThis->CTX_SUFF(pPeriodicTimer)));
211 Assert(PDMCritSectIsOwner(pThis->CTX_SUFF(pDevIns)->CTX_SUFF(pCritSectRo)));
212
213 period_code = pThis->cmos_data[RTC_REG_A] & 0x0f;
214 if ( period_code != 0
215 && (pThis->cmos_data[RTC_REG_B] & REG_B_PIE))
216 {
217 if (period_code <= 2)
218 period_code += 7;
219 /* period in 32 kHz cycles */
220 period = 1 << (period_code - 1);
221 /* compute 32 kHz clock */
222 freq = TMTimerGetFreq(pThis->CTX_SUFF(pPeriodicTimer));
223
224 cur_clock = ASMMultU64ByU32DivByU32(current_time, 32768, freq);
225 next_irq_clock = (cur_clock & ~(uint64_t)(period - 1)) + period;
226 pThis->next_periodic_time = ASMMultU64ByU32DivByU32(next_irq_clock, freq, 32768) + 1;
227 TMTimerSet(pThis->CTX_SUFF(pPeriodicTimer), pThis->next_periodic_time);
228
229#ifdef IN_RING3
230 if (RT_UNLIKELY(period != pThis->CurLogPeriod))
231#else
232 if (RT_UNLIKELY(period != pThis->CurHintPeriod))
233#endif
234 {
235#ifdef IN_RING3
236 if (pThis->cRelLogEntries++ < 64)
237 LogRel(("RTC: period=%#x (%d) %u Hz\n", period, period, _32K / period));
238 pThis->CurLogPeriod = period;
239#endif
240 pThis->CurHintPeriod = period;
241 TMTimerSetFrequencyHint(pThis->CTX_SUFF(pPeriodicTimer), _32K / period);
242 }
243 }
244 else
245 {
246#ifdef IN_RING3
247 if (TMTimerIsActive(pThis->CTX_SUFF(pPeriodicTimer)) && pThis->cRelLogEntries++ < 64)
248 LogRel(("RTC: Stopped the periodic timer\n"));
249#endif
250 TMTimerStop(pThis->CTX_SUFF(pPeriodicTimer));
251 }
252}
253
254
255static void rtc_raise_irq(PRTCSTATE pThis, uint32_t iLevel)
256{
257 if (!pThis->fDisabledByHpet)
258 {
259 PDMDevHlpISASetIrq(pThis->CTX_SUFF(pDevIns), pThis->irq, iLevel);
260 if (iLevel)
261 STAM_COUNTER_INC(&pThis->StatRTCIrq);
262 }
263}
264
265
266#ifdef IN_RING3
267DECLINLINE(int) to_bcd(PRTCSTATE pThis, int a)
268{
269 if (pThis->cmos_data[RTC_REG_B] & 0x04)
270 return a;
271 return ((a / 10) << 4) | (a % 10);
272}
273#endif
274
275
276DECLINLINE(int) from_bcd(PRTCSTATE pThis, int a)
277{
278 if (pThis->cmos_data[RTC_REG_B] & 0x04)
279 return a;
280 return ((a >> 4) * 10) + (a & 0x0f);
281}
282
283
284static void rtc_set_time(PRTCSTATE pThis)
285{
286 struct my_tm *tm = &pThis->current_tm;
287
288 tm->tm_sec = from_bcd(pThis, pThis->cmos_data[RTC_SECONDS]);
289 tm->tm_min = from_bcd(pThis, pThis->cmos_data[RTC_MINUTES]);
290 tm->tm_hour = from_bcd(pThis, pThis->cmos_data[RTC_HOURS] & 0x7f);
291 if (!(pThis->cmos_data[RTC_REG_B] & 0x02))
292 {
293 tm->tm_hour %= 12;
294 if (pThis->cmos_data[RTC_HOURS] & 0x80)
295 tm->tm_hour += 12;
296 }
297 tm->tm_wday = from_bcd(pThis, pThis->cmos_data[RTC_DAY_OF_WEEK]);
298 tm->tm_mday = from_bcd(pThis, pThis->cmos_data[RTC_DAY_OF_MONTH]);
299 tm->tm_mon = from_bcd(pThis, pThis->cmos_data[RTC_MONTH]) - 1;
300 tm->tm_year = from_bcd(pThis, pThis->cmos_data[RTC_YEAR]) + 100;
301}
302
303
304/* -=-=-=-=-=- I/O Port Handlers -=-=-=-=-=- */
305
306
307/**
308 * @callback_method_impl{FNIOMIOPORTIN}
309 */
310PDMBOTHCBDECL(int) rtcIOPortRead(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t *pu32, unsigned cb)
311{
312 NOREF(pvUser);
313 if (cb != 1)
314 return VERR_IOM_IOPORT_UNUSED;
315
316 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
317 if ((uPort & 1) == 0)
318 *pu32 = 0xff;
319 else
320 {
321 unsigned bank = (uPort >> 1) & 1;
322 switch (pThis->cmos_index[bank])
323 {
324 case RTC_SECONDS:
325 case RTC_MINUTES:
326 case RTC_HOURS:
327 case RTC_DAY_OF_WEEK:
328 case RTC_DAY_OF_MONTH:
329 case RTC_MONTH:
330 case RTC_YEAR:
331 *pu32 = pThis->cmos_data[pThis->cmos_index[0]];
332 break;
333
334 case RTC_REG_A:
335 if (pThis->cmos_data[RTC_REG_A] & REG_A_UIP)
336 ++pThis->cUipSeen;
337 else
338 pThis->cUipSeen = 0;
339 if (pThis->cUipSeen >= 250)
340 {
341 pThis->cmos_data[pThis->cmos_index[0]] &= ~REG_A_UIP;
342 pThis->cUipSeen = 0;
343 }
344 *pu32 = pThis->cmos_data[pThis->cmos_index[0]];
345 break;
346
347 case RTC_REG_C:
348 *pu32 = pThis->cmos_data[pThis->cmos_index[0]];
349 rtc_raise_irq(pThis, 0);
350 pThis->cmos_data[RTC_REG_C] = 0x00;
351 break;
352
353 default:
354 *pu32 = pThis->cmos_data[pThis->cmos_index[bank]];
355 break;
356 }
357
358 Log(("CMOS: Read bank %d idx %#04x: %#04x\n", bank, pThis->cmos_index[bank], *pu32));
359 }
360
361 return VINF_SUCCESS;
362}
363
364
365/**
366 * @callback_method_impl{FNIOMIOPORTOUT}
367 */
368PDMBOTHCBDECL(int) rtcIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t u32, unsigned cb)
369{
370 NOREF(pvUser);
371 if (cb != 1)
372 return VINF_SUCCESS;
373
374 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
375 uint32_t bank = (uPort >> 1) & 1;
376 if ((uPort & 1) == 0)
377 {
378 pThis->cmos_index[bank] = (u32 & 0x7f) + (bank * CMOS_BANK_SIZE);
379
380 /* HACK ALERT! Attempt to trigger VM_FF_TIMER and/or VM_FF_TM_VIRTUAL_SYNC
381 for forcing the pSecondTimer2 timer to run be run and clear UIP in
382 a timely fashion. */
383 if (u32 == RTC_REG_A)
384 TMTimerGet(pThis->CTX_SUFF(pSecondTimer));
385 }
386 else
387 {
388 Log(("CMOS: Write bank %d idx %#04x: %#04x (old %#04x)\n", bank,
389 pThis->cmos_index[bank], u32, pThis->cmos_data[pThis->cmos_index[bank]]));
390
391 int const idx = pThis->cmos_index[bank];
392 switch (idx)
393 {
394 case RTC_SECONDS_ALARM:
395 case RTC_MINUTES_ALARM:
396 case RTC_HOURS_ALARM:
397 pThis->cmos_data[pThis->cmos_index[0]] = u32;
398 break;
399
400 case RTC_SECONDS:
401 case RTC_MINUTES:
402 case RTC_HOURS:
403 case RTC_DAY_OF_WEEK:
404 case RTC_DAY_OF_MONTH:
405 case RTC_MONTH:
406 case RTC_YEAR:
407 pThis->cmos_data[pThis->cmos_index[0]] = u32;
408 /* if in set mode, do not update the time */
409 if (!(pThis->cmos_data[RTC_REG_B] & REG_B_SET))
410 rtc_set_time(pThis);
411 break;
412
413 case RTC_REG_A:
414 case RTC_REG_B:
415 {
416 /* We need to acquire the clock lock, because of lock ordering
417 issues this means having to release the device lock. Since
418 we're letting IOM do the locking, we must not return without
419 holding the device lock.*/
420 PDMCritSectLeave(pThis->CTX_SUFF(pDevIns)->CTX_SUFF(pCritSectRo));
421 int rc1 = TMTimerLock(pThis->CTX_SUFF(pPeriodicTimer), VINF_SUCCESS /* must get it */);
422 int rc2 = PDMCritSectEnter(pThis->CTX_SUFF(pDevIns)->CTX_SUFF(pCritSectRo), VINF_SUCCESS /* must get it */);
423 AssertRCReturn(rc1, rc1);
424 AssertRCReturnStmt(rc2, TMTimerUnlock(pThis->CTX_SUFF(pPeriodicTimer)), rc2);
425
426 if (idx == RTC_REG_A)
427 {
428 /* UIP bit is read only */
429 pThis->cmos_data[RTC_REG_A] = (u32 & ~REG_A_UIP)
430 | (pThis->cmos_data[RTC_REG_A] & REG_A_UIP);
431 }
432 else
433 {
434 if (u32 & REG_B_SET)
435 {
436 /* set mode: reset UIP mode */
437 pThis->cmos_data[RTC_REG_A] &= ~REG_A_UIP;
438#if 0 /* This is probably wrong as it breaks changing the time/date in OS/2. */
439 u32 &= ~REG_B_UIE;
440#endif
441 }
442 else
443 {
444 /* if disabling set mode, update the time */
445 if (pThis->cmos_data[RTC_REG_B] & REG_B_SET)
446 rtc_set_time(pThis);
447 }
448 pThis->cmos_data[RTC_REG_B] = u32;
449 }
450
451 rtc_timer_update(pThis, TMTimerGet(pThis->CTX_SUFF(pPeriodicTimer)));
452
453 TMTimerUnlock(pThis->CTX_SUFF(pPeriodicTimer));
454 /* the caller leaves the other lock. */
455 break;
456 }
457
458 case RTC_REG_C:
459 case RTC_REG_D:
460 /* cannot write to them */
461 break;
462
463 default:
464 pThis->cmos_data[pThis->cmos_index[bank]] = u32;
465 break;
466 }
467 }
468
469 return VINF_SUCCESS;
470}
471
472#ifdef IN_RING3
473
474/* -=-=-=-=-=- Debug Info Handlers -=-=-=-=-=- */
475
476/**
477 * @callback_method_impl{FNDBGFHANDLERDEV,
478 * Dumps the cmos Bank Info.}
479 */
480static DECLCALLBACK(void) rtcCmosBankInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
481{
482 RT_NOREF1(pszArgs);
483 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
484
485 pHlp->pfnPrintf(pHlp,
486 "First CMOS bank, offsets 0x0E - 0x7F\n"
487 "Offset %02x : --- use 'info rtc' to show CMOS clock ---", 0);
488 for (unsigned iCmos = CMOS_BANK_LOWER_LIMIT; iCmos <= CMOS_BANK_UPPER_LIMIT; iCmos++)
489 {
490 if ((iCmos & 15) == 0)
491 pHlp->pfnPrintf(pHlp, "Offset %02x : %02x", iCmos, pThis->cmos_data[iCmos]);
492 else if ((iCmos & 15) == 8)
493 pHlp->pfnPrintf(pHlp, "-%02x", pThis->cmos_data[iCmos]);
494 else if ((iCmos & 15) == 15)
495 pHlp->pfnPrintf(pHlp, " %02x\n", pThis->cmos_data[iCmos]);
496 else
497 pHlp->pfnPrintf(pHlp, " %02x", pThis->cmos_data[iCmos]);
498 }
499}
500
501/**
502 * @callback_method_impl{FNDBGFHANDLERDEV,
503 * Dumps the cmos Bank2 Info.}
504 */
505static DECLCALLBACK(void) rtcCmosBank2Info(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
506{
507 RT_NOREF1(pszArgs);
508 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
509
510 pHlp->pfnPrintf(pHlp, "Second CMOS bank, offsets 0x80 - 0xFF\n");
511 for (uint16_t iCmos = CMOS_BANK2_LOWER_LIMIT; iCmos <= CMOS_BANK2_UPPER_LIMIT; iCmos++)
512 {
513 if ((iCmos & 15) == 0)
514 pHlp->pfnPrintf(pHlp, "Offset %02x : %02x", iCmos, pThis->cmos_data[iCmos]);
515 else if ((iCmos & 15) == 8)
516 pHlp->pfnPrintf(pHlp, "-%02x", pThis->cmos_data[iCmos]);
517 else if ((iCmos & 15) == 15)
518 pHlp->pfnPrintf(pHlp, " %02x\n", pThis->cmos_data[iCmos]);
519 else
520 pHlp->pfnPrintf(pHlp, " %02x", pThis->cmos_data[iCmos]);
521 }
522}
523
524/**
525 * @callback_method_impl{FNDBGFHANDLERDEV,
526 * Dumps the cmos RTC Info.}
527 */
528static DECLCALLBACK(void) rtcCmosClockInfo(PPDMDEVINS pDevIns, PCDBGFINFOHLP pHlp, const char *pszArgs)
529{
530 RT_NOREF1(pszArgs);
531 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
532 uint8_t u8Sec = from_bcd(pThis, pThis->cmos_data[RTC_SECONDS]);
533 uint8_t u8Min = from_bcd(pThis, pThis->cmos_data[RTC_MINUTES]);
534 uint8_t u8Hr = from_bcd(pThis, pThis->cmos_data[RTC_HOURS] & 0x7f);
535 if ( !(pThis->cmos_data[RTC_REG_B] & 0x02)
536 && (pThis->cmos_data[RTC_HOURS] & 0x80))
537 u8Hr += 12;
538 uint8_t u8Day = from_bcd(pThis, pThis->cmos_data[RTC_DAY_OF_MONTH]);
539 uint8_t u8Month = from_bcd(pThis, pThis->cmos_data[RTC_MONTH]) ;
540 uint8_t u8Year = from_bcd(pThis, pThis->cmos_data[RTC_YEAR]);
541 pHlp->pfnPrintf(pHlp, "Time: %02u:%02u:%02u Date: %02u-%02u-%02u\n",
542 u8Hr, u8Min, u8Sec, u8Year, u8Month, u8Day);
543 pHlp->pfnPrintf(pHlp, "REG A=%02x B=%02x C=%02x D=%02x\n",
544 pThis->cmos_data[RTC_REG_A], pThis->cmos_data[RTC_REG_B],
545 pThis->cmos_data[RTC_REG_C], pThis->cmos_data[RTC_REG_D]);
546}
547
548
549
550/* -=-=-=-=-=- Timers and their support code -=-=-=-=-=- */
551
552
553/**
554 * @callback_method_impl{FNTMTIMERDEV, periodic}
555 */
556static DECLCALLBACK(void) rtcTimerPeriodic(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
557{
558 RT_NOREF2(pTimer, pvUser);
559 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
560 Assert(TMTimerIsLockOwner(pThis->CTX_SUFF(pPeriodicTimer)));
561 Assert(PDMCritSectIsOwner(pThis->CTX_SUFF(pDevIns)->CTX_SUFF(pCritSectRo)));
562
563 rtc_timer_update(pThis, pThis->next_periodic_time);
564 STAM_COUNTER_INC(&pThis->StatRTCTimerCB);
565 pThis->cmos_data[RTC_REG_C] |= 0xc0;
566
567 rtc_raise_irq(pThis, 1);
568}
569
570
571/* month is between 0 and 11. */
572static int get_days_in_month(int month, int year)
573{
574 static const int days_tab[12] =
575 {
576 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
577 };
578 int d;
579
580 if ((unsigned )month >= 12)
581 return 31;
582
583 d = days_tab[month];
584 if (month == 1)
585 {
586 if ((year % 4) == 0 && ((year % 100) != 0 || (year % 400) == 0))
587 d++;
588 }
589 return d;
590}
591
592
593/* update 'tm' to the next second */
594static void rtc_next_second(struct my_tm *tm)
595{
596 int days_in_month;
597
598 tm->tm_sec++;
599 if ((unsigned)tm->tm_sec >= 60)
600 {
601 tm->tm_sec = 0;
602 tm->tm_min++;
603 if ((unsigned)tm->tm_min >= 60)
604 {
605 tm->tm_min = 0;
606 tm->tm_hour++;
607 if ((unsigned)tm->tm_hour >= 24)
608 {
609 tm->tm_hour = 0;
610 /* next day */
611 tm->tm_wday++;
612 if ((unsigned)tm->tm_wday >= 7)
613 tm->tm_wday = 0;
614 days_in_month = get_days_in_month(tm->tm_mon,
615 tm->tm_year + 1900);
616 tm->tm_mday++;
617 if (tm->tm_mday < 1)
618 tm->tm_mday = 1;
619 else if (tm->tm_mday > days_in_month)
620 {
621 tm->tm_mday = 1;
622 tm->tm_mon++;
623 if (tm->tm_mon >= 12)
624 {
625 tm->tm_mon = 0;
626 tm->tm_year++;
627 }
628 }
629 }
630 }
631 }
632}
633
634
635/**
636 * @callback_method_impl{FNTMTIMERDEV, Second timer.}
637 */
638static DECLCALLBACK(void) rtcTimerSecond(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
639{
640 RT_NOREF2(pTimer, pvUser);
641 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
642 Assert(TMTimerIsLockOwner(pThis->CTX_SUFF(pPeriodicTimer)));
643 Assert(PDMCritSectIsOwner(pThis->CTX_SUFF(pDevIns)->CTX_SUFF(pCritSectRo)));
644
645 /* if the oscillator is not in normal operation, we do not update */
646 if ((pThis->cmos_data[RTC_REG_A] & 0x70) != 0x20)
647 {
648 pThis->next_second_time += TMTimerGetFreq(pThis->CTX_SUFF(pSecondTimer));
649 TMTimerSet(pThis->CTX_SUFF(pSecondTimer), pThis->next_second_time);
650 }
651 else
652 {
653 rtc_next_second(&pThis->current_tm);
654
655 if (!(pThis->cmos_data[RTC_REG_B] & REG_B_SET))
656 {
657 /* update in progress bit */
658 Log2(("RTC: UIP %x -> 1\n", !!(pThis->cmos_data[RTC_REG_A] & REG_A_UIP)));
659 pThis->cmos_data[RTC_REG_A] |= REG_A_UIP;
660 }
661
662 /* 244140 ns = 8 / 32768 seconds */
663 uint64_t delay = TMTimerFromNano(pThis->CTX_SUFF(pSecondTimer2), 244140);
664 TMTimerSet(pThis->CTX_SUFF(pSecondTimer2), pThis->next_second_time + delay);
665 }
666}
667
668
669/* Used by rtc_set_date and rtcTimerSecond2. */
670static void rtc_copy_date(PRTCSTATE pThis)
671{
672 const struct my_tm *tm = &pThis->current_tm;
673
674 pThis->cmos_data[RTC_SECONDS] = to_bcd(pThis, tm->tm_sec);
675 pThis->cmos_data[RTC_MINUTES] = to_bcd(pThis, tm->tm_min);
676 if (pThis->cmos_data[RTC_REG_B] & 0x02)
677 {
678 /* 24 hour format */
679 pThis->cmos_data[RTC_HOURS] = to_bcd(pThis, tm->tm_hour);
680 }
681 else
682 {
683 /* 12 hour format */
684 int h = tm->tm_hour % 12;
685 pThis->cmos_data[RTC_HOURS] = to_bcd(pThis, h ? h : 12);
686 if (tm->tm_hour >= 12)
687 pThis->cmos_data[RTC_HOURS] |= 0x80;
688 }
689 pThis->cmos_data[RTC_DAY_OF_WEEK] = to_bcd(pThis, tm->tm_wday);
690 pThis->cmos_data[RTC_DAY_OF_MONTH] = to_bcd(pThis, tm->tm_mday);
691 pThis->cmos_data[RTC_MONTH] = to_bcd(pThis, tm->tm_mon + 1);
692 pThis->cmos_data[RTC_YEAR] = to_bcd(pThis, tm->tm_year % 100);
693}
694
695
696/**
697 * @callback_method_impl{FNTMTIMERDEV, Second2 timer.}
698 */
699static DECLCALLBACK(void) rtcTimerSecond2(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
700{
701 RT_NOREF2(pTimer, pvUser);
702 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
703 Assert(TMTimerIsLockOwner(pThis->CTX_SUFF(pPeriodicTimer)));
704 Assert(PDMCritSectIsOwner(pThis->CTX_SUFF(pDevIns)->CTX_SUFF(pCritSectRo)));
705
706 if (!(pThis->cmos_data[RTC_REG_B] & REG_B_SET))
707 rtc_copy_date(pThis);
708
709 /* check alarm */
710 if (pThis->cmos_data[RTC_REG_B] & REG_B_AIE)
711 {
712 if ( ( (pThis->cmos_data[RTC_SECONDS_ALARM] & 0xc0) == 0xc0
713 || from_bcd(pThis, pThis->cmos_data[RTC_SECONDS_ALARM]) == pThis->current_tm.tm_sec)
714 && ( (pThis->cmos_data[RTC_MINUTES_ALARM] & 0xc0) == 0xc0
715 || from_bcd(pThis, pThis->cmos_data[RTC_MINUTES_ALARM]) == pThis->current_tm.tm_min)
716 && ( (pThis->cmos_data[RTC_HOURS_ALARM ] & 0xc0) == 0xc0
717 || from_bcd(pThis, pThis->cmos_data[RTC_HOURS_ALARM ]) == pThis->current_tm.tm_hour)
718 )
719 {
720 pThis->cmos_data[RTC_REG_C] |= 0xa0;
721 rtc_raise_irq(pThis, 1);
722 }
723 }
724
725 /* update ended interrupt */
726 if (pThis->cmos_data[RTC_REG_B] & REG_B_UIE)
727 {
728 pThis->cmos_data[RTC_REG_C] |= 0x90;
729 rtc_raise_irq(pThis, 1);
730 }
731
732 /* clear update in progress bit */
733 Log2(("RTC: UIP %x -> 0\n", !!(pThis->cmos_data[RTC_REG_A] & REG_A_UIP)));
734 pThis->cmos_data[RTC_REG_A] &= ~REG_A_UIP;
735
736 pThis->next_second_time += TMTimerGetFreq(pThis->CTX_SUFF(pSecondTimer));
737 TMTimerSet(pThis->CTX_SUFF(pSecondTimer), pThis->next_second_time);
738}
739
740
741/* -=-=-=-=-=- Saved State -=-=-=-=-=- */
742
743
744/**
745 * @callback_method_impl{FNSSMDEVLIVEEXEC}
746 */
747static DECLCALLBACK(int) rtcLiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
748{
749 RT_NOREF1(uPass);
750 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
751
752 SSMR3PutU8( pSSM, pThis->irq);
753 SSMR3PutIOPort(pSSM, pThis->IOPortBase);
754 SSMR3PutBool( pSSM, pThis->fUTC);
755
756 return VINF_SSM_DONT_CALL_AGAIN;
757}
758
759
760/**
761 * @callback_method_impl{FNSSMDEVSAVEEXEC}
762 */
763static DECLCALLBACK(int) rtcSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
764{
765 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
766
767 /* The config. */
768 rtcLiveExec(pDevIns, pSSM, SSM_PASS_FINAL);
769
770 /* The state. */
771 SSMR3PutMem(pSSM, pThis->cmos_data, CMOS_BANK_SIZE);
772 SSMR3PutU8(pSSM, pThis->cmos_index[0]);
773
774 SSMR3PutS32(pSSM, pThis->current_tm.tm_sec);
775 SSMR3PutS32(pSSM, pThis->current_tm.tm_min);
776 SSMR3PutS32(pSSM, pThis->current_tm.tm_hour);
777 SSMR3PutS32(pSSM, pThis->current_tm.tm_wday);
778 SSMR3PutS32(pSSM, pThis->current_tm.tm_mday);
779 SSMR3PutS32(pSSM, pThis->current_tm.tm_mon);
780 SSMR3PutS32(pSSM, pThis->current_tm.tm_year);
781
782 TMR3TimerSave(pThis->CTX_SUFF(pPeriodicTimer), pSSM);
783
784 SSMR3PutS64(pSSM, pThis->next_periodic_time);
785
786 SSMR3PutS64(pSSM, pThis->next_second_time);
787 TMR3TimerSave(pThis->CTX_SUFF(pSecondTimer), pSSM);
788 TMR3TimerSave(pThis->CTX_SUFF(pSecondTimer2), pSSM);
789
790 SSMR3PutBool(pSSM, pThis->fDisabledByHpet);
791
792 SSMR3PutMem(pSSM, &pThis->cmos_data[CMOS_BANK_SIZE], CMOS_BANK_SIZE);
793 return SSMR3PutU8(pSSM, pThis->cmos_index[1]);
794}
795
796
797/**
798 * @callback_method_impl{FNSSMDEVLOADEXEC}
799 */
800static DECLCALLBACK(int) rtcLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
801{
802 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
803 int rc;
804
805 if ( uVersion != RTC_SAVED_STATE_VERSION
806 && uVersion != RTC_SAVED_STATE_VERSION_VBOX_32PRE
807 && uVersion != RTC_SAVED_STATE_VERSION_VBOX_31
808 && uVersion != RTC_SAVED_STATE_VERSION_VBOX_30)
809 return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
810
811 /* The config. */
812 if (uVersion > RTC_SAVED_STATE_VERSION_VBOX_30)
813 {
814 uint8_t u8Irq;
815 rc = SSMR3GetU8(pSSM, &u8Irq); AssertRCReturn(rc, rc);
816 if (u8Irq != pThis->irq)
817 return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Config mismatch - u8Irq: saved=%#x config=%#x"), u8Irq, pThis->irq);
818
819 RTIOPORT IOPortBase;
820 rc = SSMR3GetIOPort(pSSM, &IOPortBase); AssertRCReturn(rc, rc);
821 if (IOPortBase != pThis->IOPortBase)
822 return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Config mismatch - IOPortBase: saved=%RTiop config=%RTiop"), IOPortBase, pThis->IOPortBase);
823
824 bool fUTC;
825 rc = SSMR3GetBool(pSSM, &fUTC); AssertRCReturn(rc, rc);
826 if (fUTC != pThis->fUTC)
827 LogRel(("RTC: Config mismatch - fUTC: saved=%RTbool config=%RTbool\n", fUTC, pThis->fUTC));
828 }
829
830 if (uPass != SSM_PASS_FINAL)
831 return VINF_SUCCESS;
832
833 /* The state. */
834 SSMR3GetMem(pSSM, pThis->cmos_data, CMOS_BANK_SIZE);
835 SSMR3GetU8(pSSM, &pThis->cmos_index[0]);
836
837 SSMR3GetS32(pSSM, &pThis->current_tm.tm_sec);
838 SSMR3GetS32(pSSM, &pThis->current_tm.tm_min);
839 SSMR3GetS32(pSSM, &pThis->current_tm.tm_hour);
840 SSMR3GetS32(pSSM, &pThis->current_tm.tm_wday);
841 SSMR3GetS32(pSSM, &pThis->current_tm.tm_mday);
842 SSMR3GetS32(pSSM, &pThis->current_tm.tm_mon);
843 SSMR3GetS32(pSSM, &pThis->current_tm.tm_year);
844
845 TMR3TimerLoad(pThis->CTX_SUFF(pPeriodicTimer), pSSM);
846
847 SSMR3GetS64(pSSM, &pThis->next_periodic_time);
848
849 SSMR3GetS64(pSSM, &pThis->next_second_time);
850 TMR3TimerLoad(pThis->CTX_SUFF(pSecondTimer), pSSM);
851 TMR3TimerLoad(pThis->CTX_SUFF(pSecondTimer2), pSSM);
852
853 if (uVersion > RTC_SAVED_STATE_VERSION_VBOX_31)
854 SSMR3GetBool(pSSM, &pThis->fDisabledByHpet);
855
856 if (uVersion > RTC_SAVED_STATE_VERSION_VBOX_32PRE)
857 {
858 /* Second CMOS bank. */
859 SSMR3GetMem(pSSM, &pThis->cmos_data[CMOS_BANK_SIZE], CMOS_BANK_SIZE);
860 SSMR3GetU8(pSSM, &pThis->cmos_index[1]);
861 }
862
863 int period_code = pThis->cmos_data[RTC_REG_A] & 0x0f;
864 if ( period_code != 0
865 && (pThis->cmos_data[RTC_REG_B] & REG_B_PIE))
866 {
867 if (period_code <= 2)
868 period_code += 7;
869 int period = 1 << (period_code - 1);
870 LogRel(("RTC: period=%#x (%d) %u Hz (restore)\n", period, period, _32K / period));
871 PDMCritSectEnter(pThis->pDevInsR3->pCritSectRoR3, VINF_SUCCESS);
872 TMTimerSetFrequencyHint(pThis->CTX_SUFF(pPeriodicTimer), _32K / period);
873 PDMCritSectLeave(pThis->pDevInsR3->pCritSectRoR3);
874 pThis->CurLogPeriod = period;
875 pThis->CurHintPeriod = period;
876 }
877 else
878 {
879 LogRel(("RTC: Stopped the periodic timer (restore)\n"));
880 pThis->CurLogPeriod = 0;
881 pThis->CurHintPeriod = 0;
882 }
883 pThis->cRelLogEntries = 0;
884
885 return VINF_SUCCESS;
886}
887
888
889/* -=-=-=-=-=- PDM Interface provided by the RTC device -=-=-=-=-=- */
890
891/**
892 * Calculate and update the standard CMOS checksum.
893 *
894 * @param pThis Pointer to the RTC state data.
895 */
896static void rtcCalcCRC(PRTCSTATE pThis)
897{
898 uint16_t u16 = 0;
899 for (unsigned i = RTC_CRC_START; i <= RTC_CRC_LAST; i++)
900 u16 += pThis->cmos_data[i];
901
902 pThis->cmos_data[RTC_CRC_LOW] = u16 & 0xff;
903 pThis->cmos_data[RTC_CRC_HIGH] = (u16 >> 8) & 0xff;
904}
905
906
907/**
908 * @interface_method_impl{PDMRTCREG,pfnWrite}
909 */
910static DECLCALLBACK(int) rtcCMOSWrite(PPDMDEVINS pDevIns, unsigned iReg, uint8_t u8Value)
911{
912 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
913 Assert(PDMCritSectIsOwner(pDevIns->pCritSectRoR3));
914 if (iReg < RT_ELEMENTS(pThis->cmos_data))
915 {
916 pThis->cmos_data[iReg] = u8Value;
917
918 /* does it require checksum update? */
919 if ( iReg >= RTC_CRC_START
920 && iReg <= RTC_CRC_LAST)
921 rtcCalcCRC(pThis);
922
923 return VINF_SUCCESS;
924 }
925
926 AssertMsgFailed(("iReg=%d\n", iReg));
927 return VERR_INVALID_PARAMETER;
928}
929
930
931/**
932 * @interface_method_impl{PDMRTCREG,pfnRead}
933 */
934static DECLCALLBACK(int) rtcCMOSRead(PPDMDEVINS pDevIns, unsigned iReg, uint8_t *pu8Value)
935{
936 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
937 Assert(PDMCritSectIsOwner(pDevIns->pCritSectRoR3));
938
939 if (iReg < RT_ELEMENTS(pThis->cmos_data))
940 {
941 *pu8Value = pThis->cmos_data[iReg];
942 return VINF_SUCCESS;
943 }
944 AssertMsgFailed(("iReg=%d\n", iReg));
945 return VERR_INVALID_PARAMETER;
946}
947
948
949/**
950 * @interface_method_impl{PDMIHPETLEGACYNOTIFY,pfnModeChanged}
951 */
952static DECLCALLBACK(void) rtcHpetLegacyNotify_ModeChanged(PPDMIHPETLEGACYNOTIFY pInterface, bool fActivated)
953{
954 PRTCSTATE pThis = RT_FROM_MEMBER(pInterface, RTCSTATE, IHpetLegacyNotify);
955 PDMCritSectEnter(pThis->pDevInsR3->pCritSectRoR3, VERR_IGNORED);
956
957 pThis->fDisabledByHpet = fActivated;
958
959 PDMCritSectLeave(pThis->pDevInsR3->pCritSectRoR3);
960}
961
962
963
964/* -=-=-=-=-=- IBase -=-=-=-=-=- */
965
966/**
967 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
968 */
969static DECLCALLBACK(void *) rtcQueryInterface(PPDMIBASE pInterface, const char *pszIID)
970{
971 PPDMDEVINS pDevIns = RT_FROM_MEMBER(pInterface, PDMDEVINS, IBase);
972 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
973 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDevIns->IBase);
974 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHPETLEGACYNOTIFY, &pThis->IHpetLegacyNotify);
975 return NULL;
976}
977
978
979/* -=-=-=-=-=- PDMDEVREG -=-=-=-=-=- */
980
981static void rtc_set_memory(PRTCSTATE pThis, int addr, int val)
982{
983 if (addr >= 0 && addr <= 127)
984 pThis->cmos_data[addr] = val;
985}
986
987
988static void rtc_set_date(PRTCSTATE pThis, const struct my_tm *tm)
989{
990 pThis->current_tm = *tm;
991 rtc_copy_date(pThis);
992}
993
994
995/**
996 * @interface_method_impl{PDMDEVREG,pfnInitComplete}
997 *
998 * Used to set the clock.
999 */
1000static DECLCALLBACK(int) rtcInitComplete(PPDMDEVINS pDevIns)
1001{
1002 /** @todo this should be (re)done at power on if we didn't load a state... */
1003 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
1004
1005 /*
1006 * Set the CMOS date/time.
1007 */
1008 RTTIMESPEC Now;
1009 PDMDevHlpTMUtcNow(pDevIns, &Now);
1010 RTTIME Time;
1011 if (pThis->fUTC)
1012 RTTimeExplode(&Time, &Now);
1013 else
1014 RTTimeLocalExplode(&Time, &Now);
1015
1016 struct my_tm Tm;
1017 memset(&Tm, 0, sizeof(Tm));
1018 Tm.tm_year = Time.i32Year - 1900;
1019 Tm.tm_mon = Time.u8Month - 1;
1020 Tm.tm_mday = Time.u8MonthDay;
1021 Tm.tm_wday = (Time.u8WeekDay + 1 + 7) % 7; /* 0 = Monday -> Sunday */
1022 Tm.tm_yday = Time.u16YearDay - 1;
1023 Tm.tm_hour = Time.u8Hour;
1024 Tm.tm_min = Time.u8Minute;
1025 Tm.tm_sec = Time.u8Second;
1026
1027 rtc_set_date(pThis, &Tm);
1028
1029 int iYear = to_bcd(pThis, (Tm.tm_year / 100) + 19); /* tm_year is 1900 based */
1030 rtc_set_memory(pThis, 0x32, iYear); /* 32h - Century Byte (BCD value for the century */
1031 rtc_set_memory(pThis, 0x37, iYear); /* 37h - (IBM PS/2) Date Century Byte */
1032
1033 /*
1034 * Recalculate the checksum just in case.
1035 */
1036 rtcCalcCRC(pThis);
1037
1038 Log(("CMOS bank 0: \n%16.128Rhxd\n", &pThis->cmos_data[0]));
1039 Log(("CMOS bank 1: \n%16.128Rhxd\n", &pThis->cmos_data[CMOS_BANK_SIZE]));
1040 return VINF_SUCCESS;
1041}
1042
1043
1044/**
1045 * @interface_method_impl{PDMDEVREG,pfnRelocate}
1046 */
1047static DECLCALLBACK(void) rtcRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
1048{
1049 RT_NOREF1(offDelta);
1050 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
1051
1052 pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1053 pThis->pPeriodicTimerRC = TMTimerRCPtr(pThis->pPeriodicTimerR3);
1054 pThis->pSecondTimerRC = TMTimerRCPtr(pThis->pSecondTimerR3);
1055 pThis->pSecondTimer2RC = TMTimerRCPtr(pThis->pSecondTimer2R3);
1056}
1057
1058
1059/**
1060 * @interface_method_impl{PDMDEVREG,pfnReset}
1061 */
1062static DECLCALLBACK(void) rtcReset(PPDMDEVINS pDevIns)
1063{
1064 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
1065
1066 /* Reset index values (important for second bank). */
1067 pThis->cmos_index[0] = 0;
1068 pThis->cmos_index[1] = CMOS_BANK_SIZE; /* Point to start of second bank. */
1069}
1070
1071
1072/**
1073 * @interface_method_impl{PDMDEVREG,pfnConstruct}
1074 */
1075static DECLCALLBACK(int) rtcConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1076{
1077 PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1078 PRTCSTATE pThis = PDMINS_2_DATA(pDevIns, PRTCSTATE);
1079 int rc;
1080 Assert(iInstance == 0); RT_NOREF(iInstance);
1081
1082 /*
1083 * Validate configuration.
1084 */
1085 if (!CFGMR3AreValuesValid(pCfg,
1086 "Irq\0"
1087 "Base\0"
1088 "UseUTC\0"
1089 "RCEnabled\0"
1090 "R0Enabled\0"))
1091 return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
1092
1093 /*
1094 * Init the data.
1095 */
1096 uint8_t u8Irq;
1097 rc = CFGMR3QueryU8Def(pCfg, "Irq", &u8Irq, 8);
1098 if (RT_FAILURE(rc))
1099 return PDMDEV_SET_ERROR(pDevIns, rc,
1100 N_("Configuration error: Querying \"Irq\" as a uint8_t failed"));
1101 pThis->irq = u8Irq;
1102
1103 rc = CFGMR3QueryPortDef(pCfg, "Base", &pThis->IOPortBase, 0x70);
1104 if (RT_FAILURE(rc))
1105 return PDMDEV_SET_ERROR(pDevIns, rc,
1106 N_("Configuration error: Querying \"Base\" as a RTIOPORT failed"));
1107
1108 rc = CFGMR3QueryBoolDef(pCfg, "UseUTC", &pThis->fUTC, false);
1109 if (RT_FAILURE(rc))
1110 return PDMDEV_SET_ERROR(pDevIns, rc,
1111 N_("Configuration error: Querying \"UseUTC\" as a bool failed"));
1112
1113 bool fRCEnabled;
1114 rc = CFGMR3QueryBoolDef(pCfg, "RCEnabled", &fRCEnabled, true);
1115 if (RT_FAILURE(rc))
1116 return PDMDEV_SET_ERROR(pDevIns, rc,
1117 N_("Configuration error: failed to read GCEnabled as boolean"));
1118
1119 bool fR0Enabled;
1120 rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &fR0Enabled, true);
1121 if (RT_FAILURE(rc))
1122 return PDMDEV_SET_ERROR(pDevIns, rc,
1123 N_("Configuration error: failed to read R0Enabled as boolean"));
1124
1125 Log(("RTC: Irq=%#x Base=%#x fRCEnabled=%RTbool fR0Enabled=%RTbool\n",
1126 u8Irq, pThis->IOPortBase, fRCEnabled, fR0Enabled));
1127
1128
1129 pThis->pDevInsR3 = pDevIns;
1130 pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
1131 pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
1132 pThis->cmos_data[RTC_REG_A] = 0x26;
1133 pThis->cmos_data[RTC_REG_B] = 0x02;
1134 pThis->cmos_data[RTC_REG_C] = 0x00;
1135 pThis->cmos_data[RTC_REG_D] = 0x80;
1136 pThis->RtcReg.u32Version = PDM_RTCREG_VERSION;
1137 pThis->RtcReg.pfnRead = rtcCMOSRead;
1138 pThis->RtcReg.pfnWrite = rtcCMOSWrite;
1139 pThis->fDisabledByHpet = false;
1140 pThis->cmos_index[1] = CMOS_BANK_SIZE; /* Point to start of second bank. */
1141
1142
1143 /* IBase */
1144 pDevIns->IBase.pfnQueryInterface = rtcQueryInterface;
1145 /* IHpetLegacyNotify */
1146 pThis->IHpetLegacyNotify.pfnModeChanged = rtcHpetLegacyNotify_ModeChanged;
1147
1148 /*
1149 * Create timers.
1150 */
1151 PTMTIMER pTimer;
1152 /* Periodic timer. */
1153 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL_SYNC, rtcTimerPeriodic, pThis,
1154 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "MC146818 RTC/CMOS - Periodic",
1155 &pTimer);
1156 if (RT_FAILURE(rc))
1157 return rc;
1158 pThis->pPeriodicTimerR3 = pTimer;
1159 pThis->pPeriodicTimerR0 = TMTimerR0Ptr(pTimer);
1160 pThis->pPeriodicTimerRC = TMTimerRCPtr(pTimer);
1161
1162 /* Seconds timer. */
1163 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL_SYNC, rtcTimerSecond, pThis,
1164 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "MC146818 RTC/CMOS - Second",
1165 &pTimer);
1166 if (RT_FAILURE(rc))
1167 return rc;
1168 pThis->pSecondTimerR3 = pTimer;
1169 pThis->pSecondTimerR0 = TMTimerR0Ptr(pTimer);
1170 pThis->pSecondTimerRC = TMTimerRCPtr(pTimer);
1171
1172 /* The second2 timer, this is always active. */
1173 rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL_SYNC, rtcTimerSecond2, pThis,
1174 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "MC146818 RTC/CMOS - Second2",
1175 &pTimer);
1176 if (RT_FAILURE(rc))
1177 return rc;
1178 pThis->pSecondTimer2R3 = pTimer;
1179 pThis->pSecondTimer2R0 = TMTimerR0Ptr(pTimer);
1180 pThis->pSecondTimer2RC = TMTimerRCPtr(pTimer);
1181 pThis->next_second_time = TMTimerGet(pTimer)
1182 + (TMTimerGetFreq(pTimer) * 99) / 100;
1183 rc = TMTimerLock(pTimer, VERR_IGNORED);
1184 AssertRCReturn(rc, rc);
1185 rc = TMTimerSet(pTimer, pThis->next_second_time);
1186 TMTimerUnlock(pTimer);
1187 AssertRCReturn(rc, rc);
1188
1189 /*
1190 * Register I/O ports.
1191 */
1192 rc = PDMDevHlpIOPortRegister(pDevIns, pThis->IOPortBase, 4, NULL,
1193 rtcIOPortWrite, rtcIOPortRead, NULL, NULL, "MC146818 RTC/CMOS");
1194 if (RT_FAILURE(rc))
1195 return rc;
1196 if (fRCEnabled)
1197 {
1198 rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->IOPortBase, 4, NIL_RTRCPTR,
1199 "rtcIOPortWrite", "rtcIOPortRead", NULL, NULL, "MC146818 RTC/CMOS");
1200 if (RT_FAILURE(rc))
1201 return rc;
1202 }
1203 if (fR0Enabled)
1204 {
1205 rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->IOPortBase, 4, NIL_RTR0PTR,
1206 "rtcIOPortWrite", "rtcIOPortRead", NULL, NULL, "MC146818 RTC/CMOS");
1207 if (RT_FAILURE(rc))
1208 return rc;
1209 }
1210
1211 /*
1212 * Register the saved state.
1213 */
1214 rc = PDMDevHlpSSMRegister3(pDevIns, RTC_SAVED_STATE_VERSION, sizeof(*pThis), rtcLiveExec, rtcSaveExec, rtcLoadExec);
1215 if (RT_FAILURE(rc))
1216 return rc;
1217
1218 /*
1219 * Register ourselves as the RTC/CMOS with PDM.
1220 */
1221 rc = PDMDevHlpRTCRegister(pDevIns, &pThis->RtcReg, &pThis->pRtcHlpR3);
1222 if (RT_FAILURE(rc))
1223 return rc;
1224
1225 /*
1226 * Register debugger info callback.
1227 */
1228 PDMDevHlpDBGFInfoRegister(pDevIns, "cmos1", "Display CMOS Bank 1 Info (0x0e-0x7f). No arguments. See also rtc.", rtcCmosBankInfo);
1229 PDMDevHlpDBGFInfoRegister(pDevIns, "cmos2", "Display CMOS Bank 2 Info (0x0e-0x7f). No arguments.", rtcCmosBank2Info);
1230 PDMDevHlpDBGFInfoRegister(pDevIns, "rtc", "Display CMOS RTC (0x00-0x0d). No arguments. See also cmos1 & cmos2", rtcCmosClockInfo);
1231
1232 /*
1233 * Register statistics.
1234 */
1235 PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRTCIrq, STAMTYPE_COUNTER, "/TM/RTC/Irq", STAMUNIT_OCCURENCES, "The number of times a RTC interrupt was triggered.");
1236 PDMDevHlpSTAMRegister(pDevIns, &pThis->StatRTCTimerCB, STAMTYPE_COUNTER, "/TM/RTC/TimerCB", STAMUNIT_OCCURENCES, "The number of times the RTC timer callback ran.");
1237
1238 return VINF_SUCCESS;
1239}
1240
1241
1242/**
1243 * The device registration structure.
1244 */
1245const PDMDEVREG g_DeviceMC146818 =
1246{
1247 /* u32Version */
1248 PDM_DEVREG_VERSION,
1249 /* szName */
1250 "mc146818",
1251 /* szRCMod */
1252 "VBoxDDRC.rc",
1253 /* szR0Mod */
1254 "VBoxDDR0.r0",
1255 /* pszDescription */
1256 "Motorola MC146818 RTC/CMOS Device.",
1257 /* fFlags */
1258 PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT | PDM_DEVREG_FLAGS_GUEST_BITS_32_64 | PDM_DEVREG_FLAGS_PAE36 | PDM_DEVREG_FLAGS_RC | PDM_DEVREG_FLAGS_R0,
1259 /* fClass */
1260 PDM_DEVREG_CLASS_RTC,
1261 /* cMaxInstances */
1262 1,
1263 /* cbInstance */
1264 sizeof(RTCSTATE),
1265 /* pfnConstruct */
1266 rtcConstruct,
1267 /* pfnDestruct */
1268 NULL,
1269 /* pfnRelocate */
1270 rtcRelocate,
1271 /* pfnMemSetup */
1272 NULL,
1273 /* pfnPowerOn */
1274 NULL,
1275 /* pfnReset */
1276 rtcReset,
1277 /* pfnSuspend */
1278 NULL,
1279 /* pfnResume */
1280 NULL,
1281 /* pfnAttach */
1282 NULL,
1283 /* pfnDetach */
1284 NULL,
1285 /* pfnQueryInterface */
1286 NULL,
1287 /* pfnInitComplete */
1288 rtcInitComplete,
1289 /* pfnPowerOff */
1290 NULL,
1291 /* pfnSoftReset */
1292 NULL,
1293 /* u32VersionEnd */
1294 PDM_DEVREG_VERSION
1295};
1296
1297#endif /* IN_RING3 */
1298#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
1299
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