DevSmc.cpp@ 51287

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1	/* $Id: DevSmc.cpp 48760 2013-09-29 19:44:37Z vboxsync $ */
2	/** @file
3	* DevSmc - Apple System Manaagement Controller.
4	*
5	* The SMC is controlling power, fans, take measurements (voltage, temperature,
6	* fan speed, ++), and lock Mac OS X to Apple hardware. For more details see:
7	* - http://en.wikipedia.org/wiki/System_Management_Controller
8	* - http://www.parhelia.ch/blog/statics/k3_keys.html
9	* - http://www.nosuchcon.org/talks/D1_02_Alex_Ninjas_and_Harry_Potter.pdf
10	*/
11
12	/*
13	* Copyright (C) 2013 Oracle Corporation
14	*
15	* This file is part of VirtualBox Open Source Edition (OSE), as
16	* available from http://www.virtualbox.org. This file is free software;
17	* you can redistribute it and/or modify it under the terms of the GNU
18	* General Public License (GPL) as published by the Free Software
19	* Foundation, in version 2 as it comes in the "COPYING" file of the
20	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
21	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
22	*/
23
24
25	/*******************************************************************************
26	* Header Files *
27	*******************************************************************************/
28	#define LOG_GROUP LOG_GROUP_DEV_SMC
29	#include <VBox/vmm/pdmdev.h>
30	#include <VBox/log.h>
31	#include <VBox/err.h>
32	#include <iprt/assert.h>
33	#include <iprt/string.h>
34	#ifdef IN_RING0
35	# include <iprt/asm-amd64-x86.h>
36	# include <iprt/once.h>
37	#endif
38
39	#include "VBoxDD.h"
40
41
42	/*******************************************************************************
43	* Defined Constants And Macros *
44	*******************************************************************************/
45	/** The current version of the saved state. */
46	#define SMC_SAVED_STATE_VERSION 1 /** @todo later 2 */
47	/** Empty saved state version. */
48	#define SMC_SAVED_STATE_VERSION_BAKA 1
49
50	/** The ring-0 operation number that attempts to get OSK0 and OSK1 from the real
51	* SMC. */
52	#define SMC_CALLR0_READ_OSK 1
53
54
55	/** @name Apple SMC port and register definitions.
56	* @{ */
57
58	/** The first Apple SMC port. */
59	#define SMC_PORT_FIRST 0x0300
60	/** The number of registers (also ports). */
61	#define SMC_REG_COUNT 0x0020
62
63	/** The data register. */
64	#define SMC_REG_DATA 0x00
65	#define SMC_PORT_DATA (SMC_PORT_FIRST + SMC_REG_DATA)
66
67	/** The command register. */
68	#define SMC_REG_CMD 0x04
69	#define SMC_PORT_CMD (SMC_PORT_FIRST + SMC_REG_CMD)
70
71	/** Status code register. */
72	#define SMC_REG_STATUS_CODE 0x1e
73	#define SMC_PORT_STATUS_CODE (SMC_PORT_FIRST + SMC_REG_STATUS_CODE)
74	/** @} */
75
76	/** @name Apple SMC Commands.
77	* @{ */
78	#define SMC_CMD_GET_KEY_VALUE 0x10
79	#define SMC_CMD_PUT_KEY 0x11
80	#define SMC_CMD_GET_KEY_BY_INDEX 0x12
81	#define SMC_CMD_GET_KEY_INFO 0x13
82	/** @} */
83
84	/** @name Apple SMC Status Codes.
85	* @{ */
86	#define SMC_STATUS_CD_SUCCESS UINT8_C(0x00)
87	#define SMC_STATUS_CD_COMM_COLLISION UINT8_C(0x80)
88	#define SMC_STATUS_CD_SPURIOUS_DATA UINT8_C(0x81)
89	#define SMC_STATUS_CD_BAD_COMMAND UINT8_C(0x82)
90	#define SMC_STATUS_CD_BAD_PARAMETER UINT8_C(0x83)
91	#define SMC_STATUS_CD_KEY_NOT_FOUND UINT8_C(0x84)
92	#define SMC_STATUS_CD_KEY_NOT_READABLE UINT8_C(0x85)
93	#define SMC_STATUS_CD_KEY_NOT_WRITABLE UINT8_C(0x86)
94	#define SMC_STATUS_CD_KEY_SIZE_MISMATCH UINT8_C(0x87)
95	#define SMC_STATUS_CD_FRAMING_ERROR UINT8_C(0x88)
96	#define SMC_STATUS_CD_BAD_ARGUMENT_ERROR UINT8_C(0x89)
97	#define SMC_STATUS_CD_TIMEOUT_ERROR UINT8_C(0xb7)
98	#define SMC_STATUS_CD_KEY_INDEX_RANGE_ERROR UINT8_C(0xb8)
99	#define SMC_STATUS_CD_BAD_FUNC_PARAMETER UINT8_C(0xc0)
100	#define SMC_STATUS_CD_EVENT_BUFF_WRONG_ORDER UINT8_C(0x??)
101	#define SMC_STATUS_CD_EVENT_BUFF_READ_ERROR UINT8_C(0x??)
102	#define SMC_STATUS_CD_DEVICE_ACCESS_ERROR UINT8_C(0xc7)
103	#define SMC_STATUS_CD_UNSUPPORTED_FEATURE UINT8_C(0xcb)
104	#define SMC_STATUS_CD_SMB_ACCESS_ERROR UINT8_C(0xcc)
105	/** @} */
106
107	/** @name Apple SMC Key Attributes.
108	* @{ */
109	#define SMC_KEY_ATTR_PRIVATE UINT8_C(0x01)
110	#define SMC_KEY_ATTR_UKN_0x02 UINT8_C(0x02)
111	#define SMC_KEY_ATTR_UKN_0x04 UINT8_C(0x04)
112	#define SMC_KEY_ATTR_CONST UINT8_C(0x08)
113	#define SMC_KEY_ATTR_FUNCTION UINT8_C(0x10)
114	#define SMC_KEY_ATTR_UKN_0x20 UINT8_C(0x20)
115	#define SMC_KEY_ATTR_WRITE UINT8_C(0x40)
116	#define SMC_KEY_ATTR_READ UINT8_C(0x80)
117	/** @} */
118
119
120	/** The index of the first enumerable key in g_aSmcKeys. */
121	#define SMC_KEYIDX_FIRST_ENUM 2
122
123	/** Macro for emitting a static DEVSMC4CHID initializer. */
124	#define SMC4CH(a_sz4) { { a_sz4[0], a_sz4[1], a_sz4[2], a_sz4[3] } }
125
126	/**
127	* Macro for comparing DEVSMC4CHID with a string value.
128	* @returns true if equal, false if not.
129	*/
130	#define SMC4CH_EQ(a_pSmcKey, a_sz4) ( (a_pSmcKey)->u32 == RT_MAKE_U32_FROM_U8(a_sz4[0], a_sz4[1], a_sz4[2], a_sz4[3]) )
131
132	/** Indicates the we want a 2.x SMC. */
133	#define VBOX_WITH_SMC_2_x
134
135
136	/*******************************************************************************
137	* Structures and Typedefs *
138	*******************************************************************************/
139
140	/**
141	* 4 char identifier
142	*/
143	typedef union DEVSMC4CHID
144	{
145	/** Byte view. */
146	uint8_t ab[4];
147	/** 32-bit unsigned integer view. */
148	uint32_t u32;
149	} DEVSMC4CHID;
150
151
152	/**
153	* Current key data area for communicating with the guest.
154	*/
155	typedef struct DEVSMCCURKEY
156	{
157	/** The key. */
158	DEVSMC4CHID Key;
159	/** The data type. */
160	DEVSMC4CHID Type;
161	/** Key attributes. */
162	uint8_t fAttr;
163	/** The value length. */
164	uint8_t cbValue;
165	uint8_t abAlignment[2];
166	/**
167	* The value union. 32 bytes is probably sufficient here, but we provide a
168	* little more room since it doesn't cost us anything. */
169	union
170	{
171	/** Byte view. */
172	uint8_t ab[128];
173	/** 16-bit view. */
174	uint16_t u16;
175	/** 32-bit view. */
176	uint32_t u32;
177	} Value;
178	} DEVSMCCURKEY;
179	AssertCompileSize(DEVSMCCURKEY, 128+12);
180	/** Pointer to the current key buffer. */
181	typedef DEVSMCCURKEY *PDEVSMCCURKEY;
182	/** Const pointer to the current key buffer. */
183	typedef DEVSMCCURKEY const *PCDEVSMCCURKEY;
184
185
186	/**
187	* The device
188	*/
189	typedef struct DEVSMC
190	{
191	/** The current command (SMC_PORT_CMD write). */
192	uint8_t bCmd;
193	/** Current key offset. */
194	uint8_t offKey;
195	/** Current value offset. */
196	uint8_t offValue;
197	/** Number of keys in the aKeys array. */
198	uint8_t cKeys;
199
200	/** The current key data the user is accessing. */
201	DEVSMCCURKEY CurKey;
202
203	/**
204	* Generic read/write register values.
205	*
206	* The DATA register entry is not used at all. The CMD register entry contains
207	* the state value.
208	*/
209	union
210	{
211	/** Index register view. */
212	uint8_t abRegsRW[SMC_REG_COUNT];
213	/** Named register view. */
214	struct
215	{
216	uint8_t abUnknown0[0x04];
217	/** The current state (SMC_PORT_CMD read). */
218	uint8_t bState;
219	uint8_t abUnknown1[0x1e - 0x05];
220	/** The current status code (SMC_PORT_STATUS_CODE). */
221	uint8_t bStatusCode;
222	uint8_t abUnknown2[1];
223	} s;
224	} u;
225
226	/** @name Key data.
227	* @{ */
228	/** OSK0 and OSK1. */
229	char szOsk0And1[64+1];
230	/** $Num - unknown function. */
231	uint8_t bDollaryNumber;
232	/** MSSD - shutdown reason. */
233	uint8_t bShutdownReason;
234	/** NATJ - Ninja action timer job. */
235	uint8_t bNinjaActionTimerJob;
236	/** @} */
237	} DEVSMC;
238	#ifndef _MSC_VER
239	AssertCompileMembersAtSameOffset(DEVSMC, u.abRegsRW[SMC_REG_CMD], DEVSMC, u.s.bState);
240	AssertCompileMembersAtSameOffset(DEVSMC, u.abRegsRW[SMC_REG_STATUS_CODE], DEVSMC, u.s.bStatusCode);
241	#endif
242
243	/** Pointer to the SMC state. */
244	typedef DEVSMC *PDEVSMC;
245
246
247
248	/**
249	* Method for retriving the key value and/or optionally also attributes.
250	*
251	* @returns Apple SMC Status Code.
252	* @param pThis The SMC instance data.
253	* @param pCurKey The current key structure (input / output).
254	* @param bCmd The current command (mostly for getters that also
255	* provides attributes or type info).
256	* @param pKeyDesc Pointer to the key descriptor so that the getter can
257	* service more than once key.
258	*/
259	typedef DECLCALLBACK(uint8_t) DEVSMCKEYGETTER(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd,
260	struct DEVSMCKEYDESC const *pKeyDesc);
261
262	/**
263	* Method for setting the key value.
264	*
265	* @returns Apple SMC Status Code.
266	* @param pThis The SMC instance data.
267	* @param pCurKey The current key structure (input / output).
268	* @param bCmd The current command (currently not relevant).
269	* @param pKeyDesc Pointer to the key descriptor so that the getter can
270	* service more than once key.
271	*/
272	typedef DECLCALLBACK(uint8_t) DEVSMCKEYPUTTER(PDEVSMC pThis, PCDEVSMCCURKEY pCurKey, uint8_t bCmd,
273	struct DEVSMCKEYDESC const *pKeyDesc);
274
275	/**
276	* Key descriptor.
277	*/
278	typedef struct DEVSMCKEYDESC
279	{
280	/** The key 4 character identifier. */
281	DEVSMC4CHID Key;
282	/** Type 4 character identifier. 0 means the getter will set it dynamically. */
283	DEVSMC4CHID Type;
284	/** Getter method, see DEVSMCKEYPUTTER. */
285	DEVSMCKEYGETTER *pfnGet;
286	/** Putter method, see DEVSMCKEYPUTTER. */
287	DEVSMCKEYPUTTER *pfnPut;
288	/** The keyvalue size. If 0 the pfnGet/pfnPut will define/check the size. */
289	uint8_t cbValue;
290	/** Attributes. 0 means the getter will set it dynamically. */
291	uint8_t fAttr;
292	} DEVSMCKEYDESC;
293	/** Pointer to a constant SMC key descriptor. */
294	typedef DEVSMCKEYDESC const *PCDEVSMCKEYDESC;
295
296
297	/*******************************************************************************
298	* Internal Functions *
299	*******************************************************************************/
300	#ifdef IN_RING3
301	static DEVSMCKEYGETTER scmKeyGetOSKs;
302	static DEVSMCKEYGETTER scmKeyGetKeyCount;
303	static DEVSMCKEYGETTER scmKeyGetRevision;
304	# ifdef VBOX_WITH_SMC_2_x
305	static DEVSMCKEYGETTER scmKeyGetDollarAddress;
306	static DEVSMCKEYGETTER scmKeyGetDollarNumber;
307	static DEVSMCKEYPUTTER scmKeyPutDollarNumber;
308	# endif
309	static DEVSMCKEYGETTER scmKeyGetShutdownReason;
310	static DEVSMCKEYPUTTER scmKeyPutShutdownReason;
311	static DEVSMCKEYGETTER scmKeyGetNinjaTimerAction;
312	static DEVSMCKEYPUTTER scmKeyPutNinjaTimerAction;
313	static DEVSMCKEYGETTER scmKeyGetOne;
314	static DEVSMCKEYGETTER scmKeyGetZero;
315	#endif
316
317
318	/*******************************************************************************
319	* Global Variables *
320	*******************************************************************************/
321	#ifdef IN_RING3
322	/**
323	* Apple SMC key descriptor table.
324	*/
325	static const DEVSMCKEYDESC g_aSmcKeys[] =
326	{
327	/* Non-enum keys first. */
328	{ SMC4CH("OSK0"), SMC4CH("ch8*"), scmKeyGetOSKs, NULL, 32, SMC_KEY_ATTR_READ \| SMC_KEY_ATTR_FUNCTION },
329	{ SMC4CH("OSK1"), SMC4CH("ch8*"), scmKeyGetOSKs, NULL, 32, SMC_KEY_ATTR_READ \| SMC_KEY_ATTR_FUNCTION },
330
331	/* The first enum key is the #KEY value. */
332	{ SMC4CH("#KEY"), SMC4CH("ui32"), scmKeyGetKeyCount, NULL, 4, SMC_KEY_ATTR_READ },
333	# ifdef VBOX_WITH_SMC_2_x
334	{ SMC4CH("$Adr"), SMC4CH("ui32"), scmKeyGetDollarAddress, NULL, 4, SMC_KEY_ATTR_READ },
335	{ SMC4CH("$Num"), SMC4CH("ui8 "), scmKeyGetDollarNumber, scmKeyPutDollarNumber, 1, SMC_KEY_ATTR_READ \| SMC_KEY_ATTR_WRITE \| SMC_KEY_ATTR_PRIVATE },
336	{ SMC4CH("BEMB"), SMC4CH("flag"), scmKeyGetOne, NULL, 1, SMC_KEY_ATTR_READ },
337	# else
338	{ SMC4CH("LSOF"), SMC4CH("flag"), scmKeyGetZero, NULL, 1, SMC_KEY_ATTR_READ },
339	# endif
340	{ SMC4CH("MSSD"), SMC4CH("si8 "), scmKeyGetShutdownReason, scmKeyPutShutdownReason, 1, SMC_KEY_ATTR_READ \| SMC_KEY_ATTR_WRITE \| SMC_KEY_ATTR_PRIVATE },
341	/* MSDS is not present on MacPro3,1 nor MacBookPro10,1, so returning not found is fine. */
342	# ifdef VBOX_WITH_SMC_2_x
343	{ SMC4CH("MSTf"), SMC4CH("ui8 "), scmKeyGetZero, NULL, 1, SMC_KEY_ATTR_READ },
344	# endif
345	{ SMC4CH("NATJ"), SMC4CH("ui8 "), scmKeyGetNinjaTimerAction, scmKeyPutNinjaTimerAction, 1, SMC_KEY_ATTR_READ \| SMC_KEY_ATTR_WRITE \| SMC_KEY_ATTR_PRIVATE },
346	{ SMC4CH("REV "), SMC4CH("{rev"), scmKeyGetRevision, NULL, 6, SMC_KEY_ATTR_READ },
347	/** @todo MSSP, NTOK and more. */
348	};
349	#endif
350
351	#ifdef IN_RING0
352	/** Do once for the SMC ring-0 static data (g_abOsk0And1, g_fHaveOsk). */
353	static RTONCE g_SmcR0Once = RTONCE_INITIALIZER;
354	/** Indicates whether we've successfully queried the OSK* keys. */
355	static bool g_fHaveOsk = false;
356	/** The OSK0 and OSK1 values. */
357	static uint8_t g_abOsk0And1[32+32];
358
359
360	/**
361	* Waits for the specified state on the host SMC.
362	*
363	* @returns success indicator.
364	* @param bState The desired state.
365	* @param pszWhat What we're currently doing. For the log.
366	*/
367	static bool devR0SmcWaitHostState(uint8_t bState, const char *pszWhat)
368	{
369	uint8_t bCurState;
370	for (uint32_t cMsSleep = 1; cMsSleep <= 64; cMsSleep <<= 1)
371	{
372	RTThreadSleep(cMsSleep);
373	bCurState = ASMInU16(SMC_PORT_CMD);
374	if ((bCurState & 0xf) == bState)
375	return true;
376	}
377
378	LogRel(("devR0Smc: %s: bCurState=%#x, wanted %#x.\n", pszWhat, bCurState, bState));
379	#if 0
380	uint8_t bCurStatus2 = ASMInU8(SMC_PORT_STATUS_CODE);
381	uint8_t bCurStatus3 = ASMInU8(SMC_PORT_STATUS_CODE);
382	uint16_t wCurStatus3 = ASMInU16(SMC_PORT_STATUS_CODE);
383	uint32_t dwCurStatus3 = ASMInU32(SMC_PORT_STATUS_CODE);
384	LogRel(("SMC: status2=%#x status3=%#x w=%#x dw=%#x\n", bCurStatus2, bCurStatus3, wCurStatus3, dwCurStatus3));
385	#endif
386	return false;
387	}
388
389
390	/**
391	* Reads a key by name from the host SMC.
392	*
393	* @returns success indicator.
394	* @param pszName The key name, must be exactly 4 chars long.
395	* @param pbBuf The output buffer.
396	* @param cbBuf The buffer size. Max 32 bytes.
397	*/
398	static bool devR0SmcQueryHostKey(const char pszName, uint8_t pbBuf, size_t cbBuf)
399	{
400	Assert(strlen(pszName) == 4);
401	Assert(cbBuf <= 32);
402	Assert(cbBuf > 0);
403
404	/*
405	* Issue the READ command.
406	*/
407	uint32_t cMsSleep = 1;
408	for (;;)
409	{
410	ASMOutU32(SMC_PORT_CMD, SMC_CMD_GET_KEY_VALUE);
411	RTThreadSleep(cMsSleep);
412	uint8_t bCurState = ASMInU8(SMC_PORT_CMD);
413	if ((bCurState & 0xf) == 0xc)
414	break;
415	cMsSleep <<= 1;
416	if (cMsSleep > 64)
417	{
418	LogRel(("devR0Smc: %s: bCurState=%#x, wanted %#x.\n", "cmd", bCurState, 0xc));
419	return false;
420	}
421	}
422
423	/*
424	* Send it the key.
425	*/
426	for (unsigned off = 0; off < 4; off++)
427	{
428	ASMOutU8(SMC_PORT_DATA, pszName[off]);
429	if (!devR0SmcWaitHostState(4, "key"))
430	return false;
431	}
432
433	/*
434	* The desired amount of output.
435	*/
436	ASMOutU8(SMC_PORT_DATA, (uint8_t)cbBuf);
437
438	/*
439	* Read the output.
440	*/
441	for (size_t off = 0; off < cbBuf; off++)
442	{
443	if (!devR0SmcWaitHostState(5, off ? "data" : "len"))
444	return false;
445	pbBuf[off] = ASMInU8(SMC_PORT_DATA);
446	}
447
448	LogRel(("SMC: pbBuf=%.*s\n", cbBuf, pbBuf));
449	return true;
450	}
451
452
453	/**
454	* RTOnce callback that initializes g_fHaveOsk and g_abOsk0And1.
455	*
456	* @returns VINF_SUCCESS.
457	* @param pvUserIgnored Ignored.
458	*/
459	static DECLCALLBACK(int) devR0SmcInitOnce(void *pvUserIgnored)
460	{
461	g_fHaveOsk = devR0SmcQueryHostKey("OSK0", &g_abOsk0And1[0], 32)
462	&& devR0SmcQueryHostKey("OSK1", &g_abOsk0And1[32], 32);
463
464	#if 0
465	/*
466	* Dump the device registers.
467	*/
468	for (uint16_t uPort = 0x300; uPort < 0x320; uPort ++)
469	LogRel(("SMC: %#06x=%#010x w={%#06x, %#06x}, b={%#04x %#04x %#04x %#04x}\n", uPort,
470	ASMInU32(uPort), ASMInU16(uPort), ASMInU16(uPort + 2),
471	ASMInU8(uPort), ASMInU8(uPort + 1), ASMInU8(uPort +2), ASMInU8(uPort + 3) ));
472	#endif
473
474	NOREF(pvUserIgnored);
475	return VINF_SUCCESS;
476	}
477
478
479	/**
480	* @callback_method_impl{FNPDMDEVREQHANDLERR0}
481	*/
482	PDMBOTHCBDECL(int) devR0SmcReqHandler(PPDMDEVINS pDevIns, uint32_t uOperation, uint64_t u64Arg)
483	{
484	PDEVSMC pThis = PDMINS_2_DATA(pDevIns, PDEVSMC);
485	int rc = VERR_INVALID_FUNCTION;
486
487	if (uOperation == SMC_CALLR0_READ_OSK)
488	{
489	rc = RTOnce(&g_SmcR0Once, devR0SmcInitOnce, NULL);
490	if ( RT_SUCCESS(rc)
491	&& g_fHaveOsk)
492	{
493	AssertCompile(sizeof(g_abOsk0And1) + 1 == sizeof(pThis->szOsk0And1));
494	memcpy(pThis->szOsk0And1, g_abOsk0And1, sizeof(pThis->szOsk0And1) - 1);
495	pThis->szOsk0And1[sizeof(pThis->szOsk0And1) - 1] = '\0';
496	}
497	}
498	return rc;
499	}
500
501	#endif /* IN_RING0 */
502
503	#ifdef IN_RING3 /* For now. */
504
505	/** @callback_method_impl{DEVSMCKEYGETTER, OSK0 and OSK1} */
506	static uint8_t scmKeyGetOSKs(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
507	{
508	Assert(SMC4CH_EQ(&pKeyDesc->Key, "OSK0") \|\| SMC4CH_EQ(&pKeyDesc->Key, "OSK1"));
509	const char *pszSrc = pThis->szOsk0And1;
510	if (SMC4CH_EQ(&pKeyDesc->Key, "OSK1"))
511	pszSrc += 32;
512	memcpy(pCurKey->Value.ab, pszSrc, 32);
513	return SMC_STATUS_CD_SUCCESS;
514	}
515
516
517	/** @callback_method_impl{DEVSMCKEYGETTER, \#KEY} */
518	static uint8_t scmKeyGetKeyCount(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
519	{
520	Assert(pKeyDesc == &g_aSmcKeys[SMC_KEYIDX_FIRST_ENUM]);
521	uint32_t cKeys = RT_ELEMENTS(g_aSmcKeys) - SMC_KEYIDX_FIRST_ENUM;
522	pCurKey->Value.u32 = RT_H2BE_U32(cKeys);
523	return SMC_STATUS_CD_SUCCESS;
524	}
525
526
527	/** @callback_method_impl{DEVSMCKEYGETTER, REV - Source revision.} */
528	static uint8_t scmKeyGetRevision(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
529	{
530	#ifdef VBOX_WITH_SMC_2_x
531	pCurKey->Value.ab[0] = 0x02;
532	pCurKey->Value.ab[1] = 0x03;
533	pCurKey->Value.ab[2] = 0x0f;
534	pCurKey->Value.ab[3] = 0x00;
535	pCurKey->Value.ab[4] = 0x00;
536	pCurKey->Value.ab[5] = 0x35;
537	#else
538	pCurKey->Value.ab[0] = 0x01;
539	pCurKey->Value.ab[1] = 0x25;
540	pCurKey->Value.ab[2] = 0x0f;
541	pCurKey->Value.ab[3] = 0x00;
542	pCurKey->Value.ab[4] = 0x00;
543	pCurKey->Value.ab[5] = 0x04;
544	#endif
545	return SMC_STATUS_CD_SUCCESS;
546	}
547
548	#ifdef VBOX_WITH_SMC_2_x
549
550	/** @callback_method_impl{DEVSMCKEYGETTER, $Adr - SMC address.} */
551	static uint8_t scmKeyGetDollarAddress(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
552	{
553	pCurKey->Value.u32 = RT_H2BE_U32(SMC_PORT_FIRST);
554	return VINF_SUCCESS;
555	}
556
557
558	/** @callback_method_impl{DEVSMCKEYGETTER, $Num - Some kind of number.} */
559	static uint8_t scmKeyGetDollarNumber(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
560	{
561	pCurKey->Value.ab[0] = pThis->bDollaryNumber;
562	return VINF_SUCCESS;
563	}
564
565	/** @callback_method_impl{DEVSMCKEYPUTTER, $Num - Some kind of number.} */
566	static uint8_t scmKeyPutDollarNumber(PDEVSMC pThis, PCDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
567	{
568	Log(("scmKeyPutDollarNumber: %#x -> %#x\n", pThis->bDollaryNumber, pCurKey->Value.ab[0]));
569	pThis->bDollaryNumber = pCurKey->Value.ab[0];
570	return VINF_SUCCESS;
571	}
572
573	#endif /* VBOX_WITH_SMC_2_x */
574
575	/** @callback_method_impl{DEVSMCKEYGETTER, MSSD - Machine Shutdown reason.} */
576	static uint8_t scmKeyGetShutdownReason(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
577	{
578	pCurKey->Value.ab[0] = pThis->bShutdownReason;
579	return SMC_STATUS_CD_SUCCESS;
580	}
581
582
583	/** @callback_method_impl{DEVSMCKEYPUTTER, MSSD - Machine Shutdown reason.} */
584	static uint8_t scmKeyPutShutdownReason(PDEVSMC pThis, PCDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
585	{
586	Log(("scmKeyPutShutdownReason: %#x -> %#x\n", pThis->bShutdownReason, pCurKey->Value.ab[0]));
587	pThis->bShutdownReason = pCurKey->Value.ab[0];
588	return SMC_STATUS_CD_SUCCESS;
589	}
590
591
592	/** @callback_method_impl{DEVSMCKEYGETTER, MSSD - Ninja timer action job.} */
593	static uint8_t scmKeyGetNinjaTimerAction(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
594	{
595	pCurKey->Value.ab[0] = pThis->bNinjaActionTimerJob;
596	return SMC_STATUS_CD_SUCCESS;
597	}
598
599
600	/** @callback_method_impl{DEVSMCKEYPUTTER, NATJ - Ninja timer action job.} */
601	static uint8_t scmKeyPutNinjaTimerAction(PDEVSMC pThis, PCDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
602	{
603	Log(("scmKeyPutNinjaTimerAction: %#x -> %#x\n", pThis->bNinjaActionTimerJob, pCurKey->Value.ab[0]));
604	pThis->bNinjaActionTimerJob = pCurKey->Value.ab[0];
605	return SMC_STATUS_CD_SUCCESS;
606	}
607
608	#ifdef VBOX_WITH_SMC_2_x
609
610	/** @callback_method_impl{DEVSMCKEYGETTER, Generic one getter.} */
611	static uint8_t scmKeyGetOne(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
612	{
613	memset(&pCurKey->Value.ab[0], 0, pKeyDesc->cbValue);
614	pCurKey->Value.ab[pKeyDesc->cbValue - 1] = 1;
615	return SMC_STATUS_CD_SUCCESS;
616	}
617
618	#endif /* VBOX_WITH_SMC_2_x */
619
620	/** @callback_method_impl{DEVSMCKEYGETTER, Generic zero getter.} */
621	static uint8_t scmKeyGetZero(PDEVSMC pThis, PDEVSMCCURKEY pCurKey, uint8_t bCmd, PCDEVSMCKEYDESC pKeyDesc)
622	{
623	memset(&pCurKey->Value.ab[0], 0, pKeyDesc->cbValue);
624	return SMC_STATUS_CD_SUCCESS;
625	}
626
627
628	/**
629	* Looks up a key and copies its value and attributes into the CurKey.
630	*
631	* @returns Key index on success, UINT32_MAX on failure.
632	* @param pThis The SMC instance data.
633	* @param uKeyValue The key value (DEVSMC4CHID.u32).
634	*/
635	static uint32_t smcKeyLookup(PDEVSMC pThis, uint32_t uKeyValue)
636	{
637	uint32_t iKey = RT_ELEMENTS(g_aSmcKeys);
638	while (iKey-- > 0)
639	if (g_aSmcKeys[iKey].Key.u32 == uKeyValue)
640	return iKey;
641	return UINT32_MAX;
642	}
643
644
645	/**
646	* Looks up a key and copies its value and attributes into the CurKey.
647	*
648	* @returns Apple SMC Status Code.
649	* @param pThis The SMC instance data.
650	*/
651	static uint8_t smcKeyGetByName(PDEVSMC pThis)
652	{
653	uint8_t bRc;
654	#ifdef LOG_ENABLED
655	uint32_t const uKeyValueLog = RT_H2LE_U32(pThis->CurKey.Key.u32);
656	#endif
657	uint32_t iKey = smcKeyLookup(pThis, pThis->CurKey.Key.u32);
658	if (iKey != UINT32_MAX)
659	{
660	if ( g_aSmcKeys[iKey].cbValue == pThis->CurKey.cbValue
661	\|\| !g_aSmcKeys[iKey].cbValue)
662	{
663	pThis->CurKey.Type = g_aSmcKeys[iKey].Type;
664	pThis->CurKey.fAttr = g_aSmcKeys[iKey].fAttr;
665	RT_ZERO(pThis->CurKey.Value);
666	if (g_aSmcKeys[iKey].pfnGet)
667	{
668	bRc = g_aSmcKeys[iKey].pfnGet(pThis, &pThis->CurKey, pThis->bCmd, &g_aSmcKeys[iKey]);
669	if (bRc == SMC_STATUS_CD_SUCCESS)
670	{
671	LogFlow(("smcKeyGetByName: key=%4.4s value=%.*Rhxs\n",
672	&uKeyValueLog, pThis->CurKey.cbValue, &pThis->CurKey.Value));
673	return SMC_STATUS_CD_SUCCESS;
674	}
675
676	Log(("smcKeyGetByName: key=%4.4s getter failed! bRc=%#x\n", &uKeyValueLog, bRc));
677	}
678	else
679	{
680	Log(("smcKeyGetByName: key=%4.4s is not readable!\n", &uKeyValueLog));
681	bRc = SMC_STATUS_CD_KEY_NOT_READABLE;
682	}
683	}
684	else
685	{
686	Log(("smcKeyGetByName: Wrong value size; user=%#x smc=%#x key=%4.4s !\n",
687	pThis->CurKey.cbValue, g_aSmcKeys[iKey].cbValue, &uKeyValueLog));
688	bRc = SMC_STATUS_CD_KEY_SIZE_MISMATCH;
689	}
690	}
691	else
692	{
693	Log(("smcKeyGetByName: Key not found! key=%4.4s size=%#x\n", &uKeyValueLog, pThis->CurKey.cbValue));
694	bRc = SMC_STATUS_CD_KEY_NOT_FOUND;
695	}
696
697	RT_ZERO(pThis->CurKey);
698	return bRc;
699	}
700
701
702	/**
703	* Looks up a key by index and copies its name (and attributes) into the CurKey.
704	*
705	* @returns Apple SMC Status Code.
706	* @param pThis The SMC instance data.
707	*/
708	static uint8_t smcKeyGetByIndex(PDEVSMC pThis)
709	{
710	uint8_t bRc;
711	uint32_t iKey = RT_BE2H_U32(pThis->CurKey.Key.u32);
712	if (iKey < RT_ELEMENTS(g_aSmcKeys) - SMC_KEYIDX_FIRST_ENUM)
713	{
714	pThis->CurKey.Key = g_aSmcKeys[iKey].Key;
715	pThis->CurKey.Type = g_aSmcKeys[iKey].Type;
716	pThis->CurKey.fAttr = g_aSmcKeys[iKey].fAttr;
717	pThis->CurKey.cbValue = g_aSmcKeys[iKey].cbValue;
718	RT_ZERO(pThis->CurKey.Value);
719	Log(("smcKeyGetByIndex: %#x -> %c%c%c%c\n", iKey,
720	pThis->CurKey.Key.ab[3], pThis->CurKey.Key.ab[2], pThis->CurKey.Key.ab[1], pThis->CurKey.Key.ab[0]));
721	bRc = SMC_STATUS_CD_SUCCESS;
722	}
723	else
724	{
725	Log(("smcKeyGetByIndex: Key out or range: %#x, max %#x\n", iKey, RT_ELEMENTS(g_aSmcKeys) - SMC_KEYIDX_FIRST_ENUM));
726	bRc = SMC_STATUS_CD_KEY_NOT_FOUND;
727	}
728	return bRc;
729	}
730
731
732	/**
733	* Looks up a key by index and copies its attributes into the CurKey.
734	*
735	* @returns Apple SMC Status Code.
736	* @param pThis The SMC instance data.
737	*/
738	static uint8_t smcKeyGetAttrByName(PDEVSMC pThis)
739	{
740	uint8_t bRc;
741	#ifdef LOG_ENABLED
742	uint32_t const uKeyValueLog = RT_H2LE_U32(pThis->CurKey.Key.u32);
743	#endif
744	uint32_t iKey = smcKeyLookup(pThis, pThis->CurKey.Key.u32);
745	if (iKey != UINT32_MAX)
746	{
747	pThis->CurKey.Type = g_aSmcKeys[iKey].Type;
748	pThis->CurKey.fAttr = g_aSmcKeys[iKey].fAttr;
749	pThis->CurKey.cbValue = g_aSmcKeys[iKey].cbValue;
750	RT_ZERO(pThis->CurKey.Value);
751	if (g_aSmcKeys[iKey].cbValue)
752	bRc = SMC_STATUS_CD_SUCCESS;
753	else
754	bRc = g_aSmcKeys[iKey].pfnGet(pThis, &pThis->CurKey, pThis->bCmd, &g_aSmcKeys[iKey]);
755	if (bRc == SMC_STATUS_CD_SUCCESS)
756	{
757	LogFlow(("smcKeyGetAttrByName: key=%4.4s value=%.*Rhxs\n",
758	&uKeyValueLog, pThis->CurKey.cbValue, &pThis->CurKey.Value));
759	return SMC_STATUS_CD_SUCCESS;
760	}
761
762	Log(("smcKeyGetAttrByName: key=%4.4s getter failed! bRc=%#x\n", &uKeyValueLog, bRc));
763	}
764	else
765	{
766	Log(("smcKeyGetAttrByName: Key not found! key=%4.4s size=%#x\n", &uKeyValueLog, pThis->CurKey.cbValue));
767	bRc = SMC_STATUS_CD_KEY_NOT_FOUND;
768	}
769
770	RT_ZERO(pThis->CurKey);
771	return bRc;
772	}
773
774
775	static uint8_t smcKeyPutPrepare(PDEVSMC pThis)
776	{
777	return 0;
778	}
779
780	static uint8_t smcKeyPutValue(PDEVSMC pThis)
781	{
782	return 0;
783	}
784
785
786	/**
787	* Data register read.
788	*
789	* @returns VINF_SUCCESS or VINF_IOM_R3_IOPORT_WRITE.
790	* @param uReg The register number.
791	* @param pbValue Where to return the value.
792	*/
793	static int smcRegData_r(PDEVSMC pThis, uint8_t uReg, uint8_t *pbValue)
794	{
795	switch (pThis->bCmd)
796	{
797	case SMC_CMD_GET_KEY_VALUE:
798	if ( pThis->u.s.bState == 0x05
799	&& pThis->offValue < pThis->CurKey.cbValue)
800	{
801	*pbValue = pThis->CurKey.Value.ab[pThis->offValue];
802	if (++pThis->offValue >= pThis->CurKey.cbValue)
803	pThis->u.s.bState = 0x00;
804	pThis->u.s.bStatusCode = SMC_STATUS_CD_SUCCESS;
805	}
806	else
807	{
808	Log(("smcRegData_r: Reading too much or at wrong time during SMC_CMD_GET_KEY_INFO! bState=%#x offValue=%#x\n",
809	pThis->u.s.bState, pThis->offValue));
810	pThis->u.s.bState = 0x00;
811	pThis->u.s.bStatusCode = SMC_STATUS_CD_SPURIOUS_DATA; /** @todo check status code */
812	}
813	break;
814
815	case SMC_CMD_GET_KEY_INFO:
816	if ( pThis->u.s.bState == 0x05
817	&& pThis->offValue < 6)
818	{
819	if (pThis->offValue == 0)
820	*pbValue = pThis->CurKey.cbValue;
821	else if (pThis->offValue < 1 + 4)
822	*pbValue = pThis->CurKey.Type.ab[pThis->offValue - 1];
823	else
824	*pbValue = pThis->CurKey.fAttr;
825	if (++pThis->offValue >= 6)
826	pThis->u.s.bState = 0x00;
827	pThis->u.s.bStatusCode = SMC_STATUS_CD_SUCCESS;
828	}
829	else
830	{
831	Log(("smcRegData_r: Reading too much or at wrong time during SMC_CMD_GET_KEY_INFO! bState=%#x offValue=%#x\n",
832	pThis->u.s.bState, pThis->offValue));
833	pThis->u.s.bState = 0x00;
834	pThis->u.s.bStatusCode = SMC_STATUS_CD_SPURIOUS_DATA; /** @todo check status code */
835	}
836	break;
837
838	case SMC_CMD_GET_KEY_BY_INDEX:
839	if ( pThis->u.s.bState == 0x05
840	&& pThis->offValue < sizeof(pThis->CurKey.Key))
841	{
842	*pbValue = pThis->CurKey.Key.ab[pThis->offValue];
843	if (++pThis->offValue >= sizeof(pThis->CurKey.Key))
844	pThis->u.s.bState = 0x00;
845	pThis->u.s.bStatusCode = SMC_STATUS_CD_SUCCESS;
846	}
847	else
848	{
849	Log(("smcRegData_r: Reading too much or at wrong time during GET_KEY_BY_INDEX! bState=%#x offValue=%#x\n",
850	pThis->u.s.bState, pThis->offValue));
851	pThis->u.s.bState = 0x00;
852	pThis->u.s.bStatusCode = SMC_STATUS_CD_SPURIOUS_DATA; /** @todo check status code */
853	}
854	break;
855
856	case SMC_CMD_PUT_KEY:
857	Log(("smcRegData_r: Attempting to read data during PUT_KEY!\n"));
858	*pbValue = 0xff;
859	pThis->u.s.bState = 0;
860	pThis->u.s.bStatusCode = SMC_STATUS_CD_SPURIOUS_DATA;
861	break;
862
863	default:
864	Log(("smcRegData_r: Unknown command attempts reading data\n"));
865	*pbValue = 0xff;
866	pThis->u.s.bState = 0;
867	pThis->u.s.bStatusCode = SMC_STATUS_CD_SPURIOUS_DATA;
868	break;
869	}
870
871	return VINF_SUCCESS;
872	}
873
874
875	/**
876	* Data register write.
877	*
878	* @returns VINF_SUCCESS or VINF_IOM_R3_IOPORT_WRITE.
879	* @param uReg The register number.
880	* @param bValue The value being written.
881	*/
882	static int smcRegData_w(PDEVSMC pThis, uint8_t uReg, uint8_t bValue)
883	{
884	switch (pThis->bCmd)
885	{
886	/*
887	* Get or put key value.
888	*
889	* 5 bytes written, first 4 is the key the 5th is the value size. In
890	* the case of a put the value bytes are then written, while a get will
891	* read the value bytes.
892	*/
893	case SMC_CMD_GET_KEY_VALUE:
894	case SMC_CMD_PUT_KEY:
895	if (pThis->offKey < 4)
896	{
897	/* Key byte. */
898	pThis->CurKey.Key.ab[pThis->offKey++] = bValue;
899	pThis->u.s.bState = 0x04;
900	pThis->u.s.bStatusCode = SMC_STATUS_CD_SUCCESS;
901	}
902	else if (pThis->offKey == 4)
903	{
904	/* Data length. */
905	pThis->u.s.bState = 0;
906	if (bValue <= sizeof(pThis->CurKey.Value))
907	{
908	pThis->CurKey.cbValue = bValue;
909	pThis->offKey = 5;
910	Assert(pThis->offValue == 0);
911
912	if (pThis->bCmd == SMC_CMD_GET_KEY_VALUE)
913	pThis->u.s.bStatusCode = smcKeyGetByName(pThis);
914	else
915	pThis->u.s.bStatusCode = smcKeyPutPrepare(pThis);
916	if (pThis->u.s.bStatusCode == SMC_STATUS_CD_SUCCESS)
917	pThis->u.s.bState = 0x05;
918	}
919	else
920	{
921	Log(("smcRegData_w: Guest attempts to get/put too many value bytes: %#x (max %#x)!\n",
922	bValue, sizeof(pThis->CurKey.Value)));
923	pThis->u.s.bStatusCode = SMC_STATUS_CD_KEY_SIZE_MISMATCH; /** @todo check this case! */
924	}
925	}
926	else if ( pThis->bCmd == SMC_CMD_PUT_KEY
927	&& pThis->offValue < pThis->CurKey.cbValue)
928	{
929	/* More value bytes for put key action. */
930	pThis->CurKey.Value.ab[pThis->offValue++] = bValue;
931	if (pThis->offValue != pThis->CurKey.cbValue)
932	pThis->u.s.bState = 0x05;
933	else
934	{
935	pThis->u.s.bState = 0x00;
936	pThis->u.s.bStatusCode = smcKeyPutValue(pThis);
937	}
938	}
939	else
940	{
941	Log(("smcRegData_w: Writing too much data on %s command!\n", pThis->bCmd == SMC_CMD_PUT_KEY ? "put" : "get"));
942	pThis->u.s.bState = 0x00;
943	pThis->u.s.bStatusCode = SMC_STATUS_CD_SPURIOUS_DATA;
944	}
945	break;
946
947	/*
948	* Get key info and key by index seems to take action after the last
949	* key char is written. They then both go into a data reading phase.
950	*/
951	case SMC_CMD_GET_KEY_INFO:
952	case SMC_CMD_GET_KEY_BY_INDEX:
953	if (pThis->offKey < 4)
954	{
955	pThis->CurKey.Key.ab[pThis->offKey] = bValue;
956	if (++pThis->offKey == 4)
957	{
958	if (pThis->bCmd == SMC_CMD_GET_KEY_BY_INDEX)
959	pThis->u.s.bStatusCode = smcKeyGetByIndex(pThis);
960	else
961	pThis->u.s.bStatusCode = smcKeyGetAttrByName(pThis);
962	pThis->u.s.bState = pThis->u.s.bStatusCode == SMC_STATUS_CD_SUCCESS ? 0x05 : 0x00;
963	}
964	else
965	{
966	pThis->u.s.bState = 0x04;
967	pThis->u.s.bStatusCode = SMC_STATUS_CD_SUCCESS;
968	}
969	}
970	else
971	{
972	Log(("smcRegData_w: Writing data beyond 5th byte on get %s command!\n",
973	pThis->bCmd == SMC_CMD_GET_KEY_INFO ? "info" : "by index"));
974	pThis->u.s.bState = 0x00;
975	pThis->u.s.bStatusCode = SMC_STATUS_CD_SPURIOUS_DATA;
976	}
977	break;
978
979	default:
980	Log(("smcRegData_w: Unknown command %#x!\n", bValue));
981	pThis->u.s.bState = 0x00; /** @todo Check statuses with real HW. */
982	pThis->u.s.bStatusCode = SMC_STATUS_CD_BAD_COMMAND;
983	break;
984	}
985	return VINF_SUCCESS;
986	}
987
988
989	/**
990	* Command register write.
991	*
992	* @returns VINF_SUCCESS or VINF_IOM_R3_IOPORT_WRITE.
993	* @param uReg The register number.
994	* @param bValue The value being written.
995	*/
996	static int smcRegCmd_w(PDEVSMC pThis, uint8_t uReg, uint8_t bValue)
997	{
998	LogFlow(("smcRegCmd_w: New command: %#x (old=%#x)\n", bValue, pThis->bCmd)); NOREF(uReg);
999
1000	pThis->bCmd = bValue;
1001
1002	/* Validate the command. */
1003	switch (bValue)
1004	{
1005	case SMC_CMD_GET_KEY_VALUE:
1006	case SMC_CMD_PUT_KEY:
1007	case SMC_CMD_GET_KEY_BY_INDEX:
1008	case SMC_CMD_GET_KEY_INFO:
1009	pThis->u.s.bState = 0x0c;
1010	pThis->u.s.bStatusCode = SMC_STATUS_CD_SUCCESS;
1011	break;
1012
1013	default:
1014	Log(("SMC: Unknown command %#x!\n", bValue));
1015	pThis->u.s.bState = 0x00; /** @todo Check state with real HW. */
1016	pThis->u.s.bStatusCode = SMC_STATUS_CD_BAD_COMMAND;
1017	break;
1018	}
1019
1020	/* Reset the value/key related state. */
1021	pThis->offKey = 0;
1022	pThis->offValue = 0;
1023	pThis->CurKey.Key.u32 = 0;
1024	pThis->CurKey.cbValue = 0;
1025
1026	return VINF_SUCCESS;
1027	}
1028
1029
1030	/**
1031	* Generic register write.
1032	*
1033	* @returns VINF_SUCCESS or VINF_IOM_R3_IOPORT_WRITE.
1034	* @param uReg The register number.
1035	* @param bValue The value being written.
1036	*/
1037	static int smcRegGen_w(PDEVSMC pThis, uint8_t uReg, uint8_t bValue)
1038	{
1039	Log(("smcRegGen_w: %#04x: %#x -> %#x (write)\n", uReg, pThis->u.abRegsRW[uReg], bValue));
1040	pThis->u.abRegsRW[uReg] = bValue;
1041	return VINF_SUCCESS;
1042	}
1043
1044
1045	/**
1046	* Read from register that isn't writable and reads as 0xFF.
1047	*
1048	* @returns VINF_SUCCESS or VINF_IOM_R3_IOPORT_WRITE.
1049	* @param uReg The register number.
1050	* @param pbValue Where to return the value.
1051	*/
1052	static int smcRegGen_r(PDEVSMC pThis, uint8_t uReg, uint8_t *pbValue)
1053	{
1054	Log(("smcRegGen_r: %#04x: %#x (read)\n", uReg, pThis->u.abRegsRW[uReg]));
1055	*pbValue = pThis->u.abRegsRW[uReg];
1056	return VINF_SUCCESS;
1057	}
1058
1059
1060	/**
1061	* Write to register that isn't writable and reads as 0xFF.
1062	*
1063	* @returns VINF_SUCCESS or VINF_IOM_R3_IOPORT_WRITE.
1064	* @param uReg The register number.
1065	* @param bValue The value being written.
1066	*/
1067	static int smcRegFF_w(PDEVSMC pThis, uint8_t uReg, uint8_t bValue)
1068	{
1069	Log(("SMC: %#04x: Writing %#x to unknown register!\n", uReg, bValue));
1070	return VINF_SUCCESS;
1071	}
1072
1073
1074	/**
1075	* Read from register that isn't writable and reads as 0xFF.
1076	*
1077	* @returns VINF_SUCCESS or VINF_IOM_R3_IOPORT_WRITE.
1078	* @param uReg The register number.
1079	* @param pbValue Where to return the value.
1080	*/
1081	static int smcRegFF_r(PDEVSMC pThis, uint8_t uReg, uint8_t *pbValue)
1082	{
1083	Log(("SMC: %#04x: Reading from unknown register!\n", uReg));
1084	*pbValue = 0xff;
1085	return VINF_SUCCESS;
1086	}
1087
1088
1089
1090	/**
1091	* SMC register handlers (indexed by relative I/O port).
1092	*
1093	* The device seems to be all byte registers and will split wider
1094	* accesses between registers like if it was MMIO. To better illustrate it
1095	* here is the output of the code in devR0SmcInitOnce on a MacPro3,1:
1096	* @verbatim
1097	* SMC: 0x0300=0xffffff63 w={0xff63, 0xffff}, b={0x63 0xff 0xff 0xff}
1098	* SMC: 0x0301=0x0cffffff w={0xffff, 0x0cff}, b={0xff 0xff 0xff 0x0c}
1099	* SMC: 0x0302=0xff0cffff w={0xffff, 0xff0c}, b={0xff 0xff 0x0c 0xff}
1100	* SMC: 0x0303=0xffff0cff w={0x0cff, 0xffff}, b={0xff 0x0c 0xff 0xff}
1101	* SMC: 0x0304=0xffffff0c w={0xff0c, 0xffff}, b={0x0c 0xff 0xff 0xff}
1102	* SMC: 0x0305=0xffffffff w={0xffff, 0xffff}, b={0xff 0xff 0xff 0xff}
1103	* SMC: 0x0306=0xffffffff w={0xffff, 0xffff}, b={0xff 0xff 0xff 0xff}
1104	* SMC: 0x0307=0xffffffff w={0xffff, 0xffff}, b={0xff 0xff 0xff 0xff}
1105	* SMC: 0x0308=0xffffffff w={0xffff, 0xffff}, b={0xff 0xff 0xff 0xff}
1106	* SMC: 0x0309=0xffffffff w={0xffff, 0xffff}, b={0xff 0xff 0xff 0xff}
1107	* SMC: 0x030a=0xffffffff w={0xffff, 0xffff}, b={0xff 0xff 0xff 0xff}
1108	* SMC: 0x030b=0xffffffff w={0xffff, 0xffff}, b={0xff 0xff 0xff 0xff}
1109	* SMC: 0x030c=0xffffffff w={0xffff, 0xffff}, b={0xff 0xff 0xff 0xff}
1110	* SMC: 0x030d=0x00ffffff w={0xffff, 0x00ff}, b={0xff 0xff 0xff 0x00}
1111	* SMC: 0x030e=0x0000ffff w={0xffff, 0x0000}, b={0xff 0xff 0x00 0x00}
1112	* SMC: 0x030f=0x000000ff w={0x00ff, 0x0000}, b={0xff 0x00 0x00 0x00}
1113	* SMC: 0x0310=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1114	* SMC: 0x0311=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1115	* SMC: 0x0312=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1116	* SMC: 0x0313=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1117	* SMC: 0x0314=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1118	* SMC: 0x0315=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1119	* SMC: 0x0316=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1120	* SMC: 0x0317=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1121	* SMC: 0x0318=0x00000000 w={0x0000, 0x0000}, b={0x00 0x00 0x00 0x00}
1122	* SMC: 0x0319=0xbe000000 w={0x0000, 0xbe00}, b={0x00 0x00 0x00 0xbe}
1123	* SMC: 0x031a=0xbabe0000 w={0x0000, 0xbabe}, b={0x00 0x00 0xbe 0xba}
1124	* SMC: 0x031b=0x00babe00 w={0xbe00, 0x00ba}, b={0x00 0xbe 0xba 0x00}
1125	* SMC: 0x031c=0xbe00babe w={0xbabe, 0xbe00}, b={0xbe 0xba 0x00 0xbe}
1126	* SMC: 0x031d=0xffbe00ba w={0x00ba, 0xffbe}, b={0xba 0x00 0xbe 0xff}
1127	* SMC: 0x031e=0xffffbe00 w={0xbe00, 0xffff}, b={0x00 0xbe 0xff 0xff}
1128	* SMC: 0x031f=0xffffffbe w={0xffbe, 0xffff}, b={0xbe 0xff 0xff 0xff}
1129	* @endverbatim
1130	*
1131	* The last dword is writable (0xbeXXbabe) where in the register at 0x1e is some
1132	* kind of status register for qualifying search failures and the like and will
1133	* be cleared under certain conditions. The whole dword can be written and read
1134	* back unchanged, according to my experiments. The 0x00 and 0x04 registers
1135	* does not read back what is written.
1136	*
1137	* My guess is that the 0xff values indicates ports that are not writable and
1138	* hardwired to 0xff, while the other values indicates ports that can be written
1139	* to and normally read back as written. I'm not going to push my luck too far
1140	* wrt to exact behavior until I see the guest using the registers.
1141	*/
1142	static const struct
1143	{
1144	int (*pfnWrite)(PDEVSMC pThis, uint8_t uReg, uint8_t bValue);
1145	int (pfnRead)(PDEVSMC pThis, uint8_t uReg, uint8_t pbValue);
1146	} g_aSmcRegs[SMC_REG_COUNT] =
1147	{
1148	/* [0x00] = */ { smcRegData_w, smcRegData_r },
1149	/* [0x01] = */ { smcRegFF_w, smcRegFF_r },
1150	/* [0x02] = */ { smcRegFF_w, smcRegFF_r },
1151	/* [0x03] = */ { smcRegFF_w, smcRegFF_r },
1152	/* [0x04] = */ { smcRegCmd_w, smcRegGen_r },
1153	/* [0x05] = */ { smcRegFF_w, smcRegFF_r },
1154	/* [0x06] = */ { smcRegFF_w, smcRegFF_r },
1155	/* [0x07] = */ { smcRegFF_w, smcRegFF_r },
1156	/* [0x08] = */ { smcRegFF_w, smcRegFF_r },
1157	/* [0x09] = */ { smcRegFF_w, smcRegFF_r },
1158	/* [0x0a] = */ { smcRegFF_w, smcRegFF_r },
1159	/* [0x0b] = */ { smcRegFF_w, smcRegFF_r },
1160	/* [0x0c] = */ { smcRegFF_w, smcRegFF_r },
1161	/* [0x0d] = */ { smcRegFF_w, smcRegFF_r },
1162	/* [0x0e] = */ { smcRegFF_w, smcRegFF_r },
1163	/* [0x0f] = */ { smcRegFF_w, smcRegFF_r },
1164	/* [0x11] = */ { smcRegGen_w, smcRegGen_r },
1165	/* [0x12] = */ { smcRegGen_w, smcRegGen_r },
1166	/* [0x13] = */ { smcRegGen_w, smcRegGen_r },
1167	/* [0x14] = */ { smcRegGen_w, smcRegGen_r },
1168	/* [0x15] = */ { smcRegGen_w, smcRegGen_r },
1169	/* [0x16] = */ { smcRegGen_w, smcRegGen_r },
1170	/* [0x17] = */ { smcRegGen_w, smcRegGen_r },
1171	/* [0x18] = */ { smcRegGen_w, smcRegGen_r },
1172	/* [0x19] = */ { smcRegGen_w, smcRegGen_r },
1173	/* [0x1a] = */ { smcRegGen_w, smcRegGen_r },
1174	/* [0x1b] = */ { smcRegGen_w, smcRegGen_r },
1175	/* [0x1c] = */ { smcRegGen_w, smcRegGen_r },
1176	/* [0x1d] = */ { smcRegGen_w, smcRegGen_r },
1177	/* [0x1e] = */ { smcRegGen_w, smcRegGen_r },
1178	/* [0x1f] = */ { smcRegGen_w, smcRegGen_r },
1179	};
1180
1181
1182	/** @callback_method_impl{FNIOMIOPORTOUT} */
1183	PDMBOTHCBDECL(int) smcIoPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
1184	{
1185	#ifndef IN_RING3
1186	if (cb > 1)
1187	return VINF_IOM_R3_IOPORT_WRITE;
1188	#endif
1189
1190	/*
1191	* The first register, usually only one is accessed.
1192	*/
1193	PDEVSMC pThis = PDMINS_2_DATA(pDevIns, PDEVSMC);
1194	uint32_t uReg = Port - SMC_PORT_FIRST;
1195	int rc = g_aSmcRegs[uReg].pfnWrite(pThis, uReg, u32);
1196
1197	/*
1198	* On the off chance that multiple registers are being read.
1199	*/
1200	if (cb > 1)
1201	{
1202	while (cb > 1 && uReg < SMC_REG_COUNT - 1)
1203	{
1204	cb--;
1205	uReg++;
1206	u32 >>= 8;
1207	int rc2 = g_aSmcRegs[uReg].pfnWrite(pThis, uReg, u32);
1208	if (rc2 != VINF_SUCCESS)
1209	{
1210	if ( rc == VINF_SUCCESS
1211	\|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc))
1212	\|\| (rc2 < rc && RT_SUCCESS(rc2) && RT_SUCCESS(rc)))
1213	rc = rc2;
1214	}
1215	}
1216	}
1217
1218	LogFlow(("smcIoPortWrite: %#04x write access: %#x (LB %u) rc=%Rrc\n", uReg, u32, cb, rc));
1219	return rc;
1220	}
1221
1222
1223	/** @callback_method_impl{FNIOMIOPORTIN} */
1224	PDMBOTHCBDECL(int) smcIoPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
1225	{
1226	#ifndef IN_RING3
1227	if (cb > 1)
1228	return VINF_IOM_R3_IOPORT_READ;
1229	#endif
1230
1231	PDEVSMC pThis = PDMINS_2_DATA(pDevIns, PDEVSMC);
1232
1233	/*
1234	* The first register, usually only one is accessed.
1235	*/
1236	uint32_t uReg = Port - SMC_PORT_FIRST;
1237	Log2(("smcIoPortRead: %#04x read access: LB %u\n", uReg, cb));
1238	uint8_t bValue = 0xff;
1239	int rc = g_aSmcRegs[uReg].pfnRead(pThis, uReg, &bValue);
1240	*pu32 = bValue;
1241
1242	/*
1243	* On the off chance that multiple registers are being read.
1244	*/
1245	if (cb > 1)
1246	{
1247	do
1248	{
1249	cb--;
1250	uReg++;
1251	bValue = 0xff;
1252	if (uReg < SMC_REG_COUNT)
1253	{
1254	int rc2 = g_aSmcRegs[uReg].pfnRead(pThis, uReg, &bValue);
1255	if (rc2 != VINF_SUCCESS)
1256	{
1257	if ( rc == VINF_SUCCESS
1258	\|\| (RT_FAILURE(rc2) && RT_SUCCESS(rc))
1259	\|\| (rc2 < rc && RT_SUCCESS(rc2) && RT_SUCCESS(rc)))
1260	rc = rc2;
1261	}
1262	}
1263	pu32 \|= (uint32_t)bValue << ((4 - cb) 8);
1264	} while (cb > 1);
1265	}
1266	LogFlow(("smcIoPortRead: %#04x read access: %#x (LB %u) rc=%Rrc\n", uReg, *pu32, cb, rc));
1267	return rc;
1268	}
1269
1270	#endif /* IN_RING3 for now */
1271	#ifdef IN_RING3
1272
1273	/** @callback_method_impl{FNSSMDEVSAVEEXEC} */
1274	static DECLCALLBACK(int) smcSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
1275	{
1276	PDEVSMC pThis = PDMINS_2_DATA(pDevIns, PDEVSMC);
1277
1278	/** @todo */
1279
1280	return VINF_SUCCESS;
1281	}
1282
1283
1284	/** @callback_method_impl{FNSSMDEVLOADEXEC} */
1285	static DECLCALLBACK(int) smcLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
1286	{
1287	PDEVSMC pThis = PDMINS_2_DATA(pDevIns, PDEVSMC);
1288	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
1289
1290	/* Fend off unsupported versions. */
1291	if ( uVersion != SMC_SAVED_STATE_VERSION
1292	&& uVersion != SMC_SAVED_STATE_VERSION_BAKA
1293	&& uVersion != SMC_SAVED_STATE_VERSION_BAKA + 1)
1294	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
1295
1296	/*
1297	* Do the actual restoring.
1298	*/
1299	if (uVersion == SMC_SAVED_STATE_VERSION)
1300	{
1301	/** @todo */
1302	}
1303
1304	return VINF_SUCCESS;
1305	}
1306
1307
1308	/**
1309	* @interface_method_impl{PDMDEVREG,pfnConstruct}
1310	*/
1311	static DECLCALLBACK(int) smcConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
1312	{
1313	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
1314	PDEVSMC pThis = PDMINS_2_DATA(pDevIns, PDEVSMC);
1315	Assert(iInstance == 0);
1316
1317	/*
1318	* Init the data.
1319	*/
1320	pThis->bDollaryNumber = 1;
1321	pThis->bShutdownReason = 3; /* STOP_CAUSE_POWERKEY_GOOD_CODE */
1322
1323	/*
1324	* Validate configuration.
1325	*/
1326	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "DeviceKey\|GetKeyFromRealSMC", "");
1327
1328	/*
1329	* Read configuration.
1330	*/
1331
1332	/* The DeviceKey sets OSK0 and OSK1. */
1333	int rc = CFGMR3QueryStringDef(pCfg, "DeviceKey", pThis->szOsk0And1, sizeof(pThis->szOsk0And1), "");
1334	if (RT_FAILURE(rc))
1335	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
1336	N_("Configuration error: Querying \"DeviceKey\" as a string failed"));
1337
1338	/* Query the key from the real hardware if asked to do so. */
1339	bool fGetKeyFromRealSMC;
1340	rc = CFGMR3QueryBoolDef(pCfg, "GetKeyFromRealSMC", &fGetKeyFromRealSMC, false);
1341	if (RT_FAILURE(rc))
1342	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
1343	N_("Configuration error: Querying \"GetKeyFromRealSMC\" as a boolean failed"));
1344	if (fGetKeyFromRealSMC)
1345	{
1346	rc = PDMDevHlpCallR0(pDevIns, SMC_CALLR0_READ_OSK, 0 /u64Arg/);
1347	if (RT_FAILURE(rc))
1348	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
1349	N_("Failed to query SMC value from the host"));
1350	}
1351
1352	/*
1353	* Register I/O Ports
1354	*/
1355	rc = PDMDevHlpIOPortRegister(pDevIns, SMC_PORT_FIRST, SMC_REG_COUNT, NULL,
1356	smcIoPortWrite, smcIoPortRead,
1357	NULL, NULL, "SMC data port");
1358	AssertRCReturn(rc, rc);
1359
1360	/** @todo Newer versions (2.03) have an MMIO mapping as well (ACPI). */
1361
1362
1363	/*
1364	* Saved state.
1365	*/
1366	rc = PDMDevHlpSSMRegister(pDevIns, SMC_SAVED_STATE_VERSION, sizeof(*pThis), smcSaveExec, smcLoadExec);
1367	if (RT_FAILURE(rc))
1368	return rc;
1369
1370	return VINF_SUCCESS;
1371	}
1372
1373
1374	/**
1375	* The device registration structure.
1376	*/
1377	const PDMDEVREG g_DeviceSmc =
1378	{
1379	/* u32Version */
1380	PDM_DEVREG_VERSION,
1381	/* szName */
1382	"smc",
1383	/* szRCMod */
1384	"VBoxDDGC.gc",
1385	/* szR0Mod */
1386	"VBoxDDR0.r0",
1387	/* pszDescription */
1388	"Apple System Management Controller",
1389	/* fFlags */
1390	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_R0 \| PDM_DEVREG_FLAGS_RC,
1391	/* fClass */
1392	PDM_DEVREG_CLASS_ARCH,
1393	/* cMaxInstances */
1394	1,
1395	/* cbInstance */
1396	sizeof(DEVSMC),
1397	/* pfnConstruct */
1398	smcConstruct,
1399	/* pfnDestruct */
1400	NULL,
1401	/* pfnRelocate */
1402	NULL,
1403	/* pfnMemSetup */
1404	NULL,
1405	/* pfnPowerOn */
1406	NULL,
1407	/* pfnReset */
1408	NULL,
1409	/* pfnSuspend */
1410	NULL,
1411	/* pfnResume */
1412	NULL,
1413	/* pfnAttach */
1414	NULL,
1415	/* pfnDetach */
1416	NULL,
1417	/* pfnQueryInterface. */
1418	NULL,
1419	/* pfnInitComplete. */
1420	NULL,
1421	/* pfnPowerOff */
1422	NULL,
1423	/* pfnSoftReset */
1424	NULL,
1425	/* u32VersionEnd */
1426	PDM_DEVREG_VERSION
1427	};
1428
1429	#endif /* IN_RING3 */

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source: vbox/trunk/src/VBox/Devices/EFI/DevSmc.cpp@ 51287

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