/* $Id: DrvACPI.cpp 48947 2013-10-07 21:41:00Z vboxsync $ */ /** @file * DrvACPI - ACPI Host Driver. */ /* * Copyright (C) 2006-2012 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /******************************************************************************* * Header Files * *******************************************************************************/ #define LOG_GROUP LOG_GROUP_DRV_ACPI #ifdef RT_OS_WINDOWS # include #endif #include #include #include #include #include #include #ifdef RT_OS_LINUX # include # include # include # include #endif #ifdef RT_OS_DARWIN # include # include # include #endif #ifdef RT_OS_FREEBSD # include # include # include # include # include # include # include # include #endif #include "VBoxDD.h" /******************************************************************************* * Structures and Typedefs * *******************************************************************************/ /** * ACPI driver instance data. * * @implements PDMIACPICONNECTOR */ typedef struct DRVACPI { /** The ACPI interface. */ PDMIACPICONNECTOR IACPIConnector; /** The ACPI port interface. */ PPDMIACPIPORT pPort; /** Pointer to the driver instance. */ PPDMDRVINS pDrvIns; #ifdef RT_OS_LINUX /** The current power source. */ PDMACPIPOWERSOURCE enmPowerSource; /** true = one or more batteries preset, false = no battery present. */ bool fBatteryPresent; /** No need to RTThreadPoke the poller when set. */ bool volatile fDontPokePoller; /** Remaining battery capacity. */ PDMACPIBATCAPACITY enmBatteryRemainingCapacity; /** Battery state. */ PDMACPIBATSTATE enmBatteryState; /** Preset battery charging/discharging rate. */ uint32_t u32BatteryPresentRate; /** The poller thread. */ PPDMTHREAD pPollerThread; /** Synchronize access to the above fields. * XXX A spinlock is probably cheaper ... */ RTCRITSECT CritSect; /** Event semaphore the poller thread is sleeping on. */ RTSEMEVENT hPollerSleepEvent; #endif } DRVACPI, *PDRVACPI; /** * @interface_method_impl{PDMIBASE,pfnQueryInterface} */ static DECLCALLBACK(void *) drvACPIQueryInterface(PPDMIBASE pInterface, const char *pszIID) { PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface); PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI); PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase); PDMIBASE_RETURN_INTERFACE(pszIID, PDMIACPICONNECTOR, &pThis->IACPIConnector); return NULL; } /** * Get the current power source of the host system. * * @returns status code * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pPowerSource Pointer to the power source result variable. */ static DECLCALLBACK(int) drvACPIQueryPowerSource(PPDMIACPICONNECTOR pInterface, PDMACPIPOWERSOURCE *pPowerSource) { #if defined(RT_OS_WINDOWS) SYSTEM_POWER_STATUS powerStatus; if (GetSystemPowerStatus(&powerStatus)) { /* running on battery? */ if ( powerStatus.ACLineStatus == 0 /* Offline */ || powerStatus.ACLineStatus == 255 /* Unknown */ && (powerStatus.BatteryFlag & 15) /* high | low | critical | charging */ ) /** @todo why is 'charging' included in the flag test? Add parenthesis around the right bits so the code is clearer. */ { *pPowerSource = PDM_ACPI_POWER_SOURCE_BATTERY; } /* running on AC link? */ else if (powerStatus.ACLineStatus == 1) { *pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET; } else /* what the hell we're running on? */ { *pPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN; } } else { AssertMsgFailed(("Could not determine system power status, error: 0x%x\n", GetLastError())); *pPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN; } #elif defined (RT_OS_LINUX) PDRVACPI pThis = RT_FROM_MEMBER(pInterface, DRVACPI, IACPIConnector); RTCritSectEnter(&pThis->CritSect); *pPowerSource = pThis->enmPowerSource; RTCritSectLeave(&pThis->CritSect); #elif defined (RT_OS_DARWIN) *pPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN; CFTypeRef pBlob = IOPSCopyPowerSourcesInfo(); CFArrayRef pSources = IOPSCopyPowerSourcesList(pBlob); CFDictionaryRef pSource = NULL; const void *psValue; bool fResult; if (CFArrayGetCount(pSources) > 0) { for (int i = 0; i < CFArrayGetCount(pSources); ++i) { pSource = IOPSGetPowerSourceDescription(pBlob, CFArrayGetValueAtIndex(pSources, i)); /* If the source is empty skip over to the next one. */ if(!pSource) continue; /* Skip all power sources which are currently not present like a * second battery. */ if (CFDictionaryGetValue(pSource, CFSTR(kIOPSIsPresentKey)) == kCFBooleanFalse) continue; /* Only internal power types are of interest. */ fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSTransportTypeKey), &psValue); if ( fResult && CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSInternalType), 0) == kCFCompareEqualTo) { /* Check which power source we are connect on. */ fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSPowerSourceStateKey), &psValue); if ( fResult && CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSACPowerValue), 0) == kCFCompareEqualTo) *pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET; else if ( fResult && CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSBatteryPowerValue), 0) == kCFCompareEqualTo) *pPowerSource = PDM_ACPI_POWER_SOURCE_BATTERY; } } } CFRelease(pBlob); CFRelease(pSources); #elif defined(RT_OS_FREEBSD) int fAcLine = 0; size_t cbParameter = sizeof(fAcLine); int rc = sysctlbyname("hw.acpi.acline", &fAcLine, &cbParameter, NULL, NULL); if (!rc) { if (fAcLine == 1) *pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET; else if (fAcLine == 0) *pPowerSource = PDM_ACPI_POWER_SOURCE_BATTERY; else *pPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN; } else { AssertMsg(errno == ENOENT, ("rc=%d (%s)\n", rc, strerror(errno))); *pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET; } #else /* !RT_OS_FREEBSD either - what could this be? */ *pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET; #endif /* !RT_OS_FREEBSD */ return VINF_SUCCESS; } /** * @copydoc PDMIACPICONNECTOR::pfnQueryBatteryStatus */ static DECLCALLBACK(int) drvACPIQueryBatteryStatus(PPDMIACPICONNECTOR pInterface, bool *pfPresent, PPDMACPIBATCAPACITY penmRemainingCapacity, PPDMACPIBATSTATE penmBatteryState, uint32_t *pu32PresentRate) { /* default return values for all architectures */ *pfPresent = false; /* no battery present */ *penmBatteryState = PDM_ACPI_BAT_STATE_CHARGED; *penmRemainingCapacity = PDM_ACPI_BAT_CAPACITY_UNKNOWN; *pu32PresentRate = ~0; /* present rate is unknown */ #if defined(RT_OS_WINDOWS) SYSTEM_POWER_STATUS powerStatus; if (GetSystemPowerStatus(&powerStatus)) { /* 128 means no battery present */ *pfPresent = !(powerStatus.BatteryFlag & 128); /* just forward the value directly */ *penmRemainingCapacity = (PDMACPIBATCAPACITY)powerStatus.BatteryLifePercent; /* we assume that we are discharging the battery if we are not on-line and * not charge the battery */ uint32_t uBs = PDM_ACPI_BAT_STATE_CHARGED; if (powerStatus.BatteryFlag & 8) uBs = PDM_ACPI_BAT_STATE_CHARGING; else if (powerStatus.ACLineStatus == 0 || powerStatus.ACLineStatus == 255) uBs = PDM_ACPI_BAT_STATE_DISCHARGING; if (powerStatus.BatteryFlag & 4) uBs |= PDM_ACPI_BAT_STATE_CRITICAL; *penmBatteryState = (PDMACPIBATSTATE)uBs; /* on Windows it is difficult to request the present charging/discharging rate */ } else { AssertMsgFailed(("Could not determine system power status, error: 0x%x\n", GetLastError())); } #elif defined(RT_OS_LINUX) PDRVACPI pThis = RT_FROM_MEMBER(pInterface, DRVACPI, IACPIConnector); RTCritSectEnter(&pThis->CritSect); *pfPresent = pThis->fBatteryPresent; *penmRemainingCapacity = pThis->enmBatteryRemainingCapacity; *penmBatteryState = pThis->enmBatteryState; *pu32PresentRate = pThis->u32BatteryPresentRate; RTCritSectLeave(&pThis->CritSect); #elif defined(RT_OS_DARWIN) CFTypeRef pBlob = IOPSCopyPowerSourcesInfo(); CFArrayRef pSources = IOPSCopyPowerSourcesList(pBlob); CFDictionaryRef pSource = NULL; const void *psValue; bool fResult; if (CFArrayGetCount(pSources) > 0) { for (int i = 0; i < CFArrayGetCount(pSources); ++i) { pSource = IOPSGetPowerSourceDescription(pBlob, CFArrayGetValueAtIndex(pSources, i)); /* If the source is empty skip over to the next one. */ if(!pSource) continue; /* Skip all power sources which are currently not present like a * second battery. */ if (CFDictionaryGetValue(pSource, CFSTR(kIOPSIsPresentKey)) == kCFBooleanFalse) continue; /* Only internal power types are of interest. */ fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSTransportTypeKey), &psValue); if ( fResult && CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSInternalType), 0) == kCFCompareEqualTo) { PDMACPIPOWERSOURCE powerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN; /* First check which power source we are connect on. */ fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSPowerSourceStateKey), &psValue); if ( fResult && CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSACPowerValue), 0) == kCFCompareEqualTo) powerSource = PDM_ACPI_POWER_SOURCE_OUTLET; else if ( fResult && CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSBatteryPowerValue), 0) == kCFCompareEqualTo) powerSource = PDM_ACPI_POWER_SOURCE_BATTERY; /* At this point the power source is present. */ *pfPresent = true; *penmBatteryState = PDM_ACPI_BAT_STATE_CHARGED; int curCapacity = 0; int maxCapacity = 1; float remCapacity = 0.0f; /* Fetch the current capacity value of the power source */ fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSCurrentCapacityKey), &psValue); if (fResult) CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &curCapacity); /* Fetch the maximum capacity value of the power source */ fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSMaxCapacityKey), &psValue); if (fResult) CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &maxCapacity); /* Calculate the remaining capacity in percent */ remCapacity = ((float)curCapacity/(float)maxCapacity * PDM_ACPI_BAT_CAPACITY_MAX); *penmRemainingCapacity = (PDMACPIBATCAPACITY)remCapacity; if (powerSource == PDM_ACPI_POWER_SOURCE_BATTERY) { /* If we are on battery power we are discharging in every * case */ *penmBatteryState = PDM_ACPI_BAT_STATE_DISCHARGING; int timeToEmpty = -1; /* Get the time till the battery source will be empty */ fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSTimeToEmptyKey), &psValue); if (fResult) CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &timeToEmpty); if (timeToEmpty != -1) /* 0...1000 */ *pu32PresentRate = (uint32_t)roundf((remCapacity / ((float)timeToEmpty/60.0)) * 10.0); } if ( powerSource == PDM_ACPI_POWER_SOURCE_OUTLET && CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSIsChargingKey), &psValue)) { /* We are running on an AC power source, but we also have a * battery power source present. */ if (CFBooleanGetValue((CFBooleanRef)psValue) > 0) { /* This means charging. */ *penmBatteryState = PDM_ACPI_BAT_STATE_CHARGING; int timeToFull = -1; /* Get the time till the battery source will be charged */ fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSTimeToFullChargeKey), &psValue); if (fResult) CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &timeToFull); if (timeToFull != -1) /* 0...1000 */ *pu32PresentRate = (uint32_t)roundf((100.0-(float)remCapacity) / ((float)timeToFull/60.0)) * 10.0; } } /* Check for critical */ int criticalValue = 20; fResult = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSDeadWarnLevelKey), &psValue); if (fResult) CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &criticalValue); if (remCapacity < criticalValue) *penmBatteryState = (PDMACPIBATSTATE)(*penmBatteryState | PDM_ACPI_BAT_STATE_CRITICAL); } } } CFRelease(pBlob); CFRelease(pSources); #elif defined(RT_OS_FREEBSD) /* We try to use /dev/acpi first and if that fails use the sysctls. */ bool fSuccess = true; int FileAcpi = 0; int rc = 0; FileAcpi = open("/dev/acpi", O_RDONLY); if (FileAcpi != -1) { bool fMilliWatt; union acpi_battery_ioctl_arg BatteryIo; memset(&BatteryIo, 0, sizeof(BatteryIo)); BatteryIo.unit = 0; /* Always use the first battery. */ /* Determine the power units first. */ if (ioctl(FileAcpi, ACPIIO_BATT_GET_BIF, &BatteryIo) == -1) fSuccess = false; else { if (BatteryIo.bif.units == ACPI_BIF_UNITS_MW) fMilliWatt = true; else fMilliWatt = false; /* mA */ BatteryIo.unit = 0; if (ioctl(FileAcpi, ACPIIO_BATT_GET_BATTINFO, &BatteryIo) == -1) fSuccess = false; else { if ((BatteryIo.battinfo.state & ACPI_BATT_STAT_NOT_PRESENT) == ACPI_BATT_STAT_NOT_PRESENT) *pfPresent = false; else { *pfPresent = true; if (BatteryIo.battinfo.state & ACPI_BATT_STAT_DISCHARG) *penmBatteryState = PDM_ACPI_BAT_STATE_DISCHARGING; else if (BatteryIo.battinfo.state & ACPI_BATT_STAT_CHARGING) *penmBatteryState = PDM_ACPI_BAT_STATE_CHARGING; else *penmBatteryState = PDM_ACPI_BAT_STATE_CHARGED; if (BatteryIo.battinfo.state & ACPI_BATT_STAT_CRITICAL) *penmBatteryState = (PDMACPIBATSTATE)(*penmBatteryState | PDM_ACPI_BAT_STATE_CRITICAL); } if (BatteryIo.battinfo.cap != -1) *penmRemainingCapacity = (PDMACPIBATCAPACITY)BatteryIo.battinfo.cap; BatteryIo.unit = 0; if (ioctl(FileAcpi, ACPIIO_BATT_GET_BST, &BatteryIo) == 0) { /* The rate can be either mW or mA but the ACPI device wants mW. */ if (BatteryIo.bst.rate != 0xffffffff) { if (fMilliWatt) *pu32PresentRate = BatteryIo.bst.rate; else if (BatteryIo.bst.volt != 0xffffffff) { /* * The rate is in mA so we have to convert it. * The current power rate can be calculated with P = U * I */ *pu32PresentRate = (uint32_t)( ( ((float)BatteryIo.bst.volt/1000.0) * ((float)BatteryIo.bst.rate/1000.0)) * 1000.0); } } } } } close(FileAcpi); } else fSuccess = false; if (!fSuccess) { int fBatteryState = 0; size_t cbParameter = sizeof(fBatteryState); rc = sysctlbyname("hw.acpi.battery.state", &fBatteryState, &cbParameter, NULL, NULL); if (!rc) { if ((fBatteryState & ACPI_BATT_STAT_NOT_PRESENT) == ACPI_BATT_STAT_NOT_PRESENT) *pfPresent = false; else { *pfPresent = true; if (fBatteryState & ACPI_BATT_STAT_DISCHARG) *penmBatteryState = PDM_ACPI_BAT_STATE_DISCHARGING; else if (fBatteryState & ACPI_BATT_STAT_CHARGING) *penmBatteryState = PDM_ACPI_BAT_STATE_CHARGING; else *penmBatteryState = PDM_ACPI_BAT_STATE_CHARGED; if (fBatteryState & ACPI_BATT_STAT_CRITICAL) *penmBatteryState = (PDMACPIBATSTATE)(*penmBatteryState | PDM_ACPI_BAT_STATE_CRITICAL); /* Get battery level. */ int curCapacity = 0; cbParameter = sizeof(curCapacity); rc = sysctlbyname("hw.acpi.battery.life", &curCapacity, &cbParameter, NULL, NULL); if (!rc && curCapacity >= 0) *penmRemainingCapacity = (PDMACPIBATCAPACITY)curCapacity; /* The rate can't be determined with sysctls. */ } } } #endif /* RT_OS_FREEBSD */ return VINF_SUCCESS; } #ifdef RT_OS_LINUX /** * Poller thread for /proc/acpi status files. * * Reading these files takes ages (several seconds) on some hosts, therefore * start this thread. The termination of this thread may take some seconds * on such a hosts! * * @param pDrvIns The driver instance data. * @param pThread The thread. */ static DECLCALLBACK(int) drvACPIPoller(PPDMDRVINS pDrvIns, PPDMTHREAD pThread) { PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI); if (pThread->enmState == PDMTHREADSTATE_INITIALIZING) return VINF_SUCCESS; while (pThread->enmState == PDMTHREADSTATE_RUNNING) { ASMAtomicWriteBool(&pThis->fDontPokePoller, false); PDMACPIPOWERSOURCE enmPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN; PRTSTREAM pStrmStatus; PRTSTREAM pStrmType; PRTDIR pDir = NULL; RTDIRENTRY DirEntry; char szLine[1024]; bool fBatteryPresent = false; /* one or more batteries present */ bool fCharging = false; /* one or more batteries charging */ bool fDischarging = false; /* one or more batteries discharging */ bool fCritical = false; /* one or more batteries in critical state */ int32_t maxCapacityTotal = 0; /* total capacity of all batteries */ int32_t currentCapacityTotal = 0; /* total current capacity of all batteries */ int32_t presentRateTotal = 0; /* total present (dis)charging rate of all batts */ int rc = RTDirOpen(&pDir, "/sys/class/power_supply/"); if (RT_SUCCESS(rc)) { /* * The new /sys interface introduced with Linux 2.6.25. */ while (pThread->enmState == PDMTHREADSTATE_RUNNING) { rc = RTDirRead(pDir, &DirEntry, NULL); if (RT_FAILURE(rc)) break; if ( strcmp(DirEntry.szName, ".") == 0 || strcmp(DirEntry.szName, "..") == 0) continue; #define POWER_OPEN(s, n) RTStrmOpenF("r", s, "/sys/class/power_supply/%s/" n, DirEntry.szName) rc = POWER_OPEN(&pStrmType, "type"); if (RT_FAILURE(rc)) continue; rc = RTStrmGetLine(pStrmType, szLine, sizeof(szLine)); if (RT_SUCCESS(rc)) { if (strcmp(szLine, "Mains") == 0) { /* AC adapter */ rc = POWER_OPEN(&pStrmStatus, "online"); if (RT_SUCCESS(rc)) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); if ( RT_SUCCESS(rc) && strcmp(szLine, "1") == 0) enmPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET; else enmPowerSource = PDM_ACPI_POWER_SOURCE_BATTERY; RTStrmClose(pStrmStatus); } } else if (strcmp(szLine, "Battery") == 0) { /* Battery */ rc = POWER_OPEN(&pStrmStatus, "present"); if (RT_SUCCESS(rc)) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); RTStrmClose(pStrmStatus); if ( RT_SUCCESS(rc) && strcmp(szLine, "1") == 0) { fBatteryPresent = true; rc = RTStrmOpenF("r", &pStrmStatus, "/sys/class/power_supply/%s/status", DirEntry.szName); if (RT_SUCCESS(rc)) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); if (RT_SUCCESS(rc)) { if (strcmp(szLine, "Discharging") == 0) fDischarging = true; else if (strcmp(szLine, "Charging") == 0) fCharging = true; } RTStrmClose(pStrmStatus); } rc = POWER_OPEN(&pStrmStatus, "capacity_level"); if (RT_SUCCESS(rc)) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); if ( RT_SUCCESS(rc) && strcmp(szLine, "Critical") == 0) fCritical = true; RTStrmClose(pStrmStatus); } rc = POWER_OPEN(&pStrmStatus, "energy_full"); if (RT_FAILURE(rc)) rc = POWER_OPEN(&pStrmStatus, "charge_full"); if (RT_SUCCESS(rc)) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); if (RT_SUCCESS(rc)) { int32_t maxCapacity = 0; rc = RTStrToInt32Full(szLine, 0, &maxCapacity); if ( RT_SUCCESS(rc) && maxCapacity > 0) maxCapacityTotal += maxCapacity; } RTStrmClose(pStrmStatus); } rc = POWER_OPEN(&pStrmStatus, "energy_now"); if (RT_FAILURE(rc)) rc = POWER_OPEN(&pStrmStatus, "charge_now"); if (RT_SUCCESS(rc)) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); if (RT_SUCCESS(rc)) { int32_t currentCapacity = 0; rc = RTStrToInt32Full(szLine, 0, ¤tCapacity); if ( RT_SUCCESS(rc) && currentCapacity > 0) currentCapacityTotal += currentCapacity; } RTStrmClose(pStrmStatus); } rc = POWER_OPEN(&pStrmStatus, "current_now"); if (RT_SUCCESS(rc)) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); if (RT_SUCCESS(rc)) { int32_t presentRate = 0; rc = RTStrToInt32Full(szLine, 0, &presentRate); if ( RT_SUCCESS(rc) && presentRate > 0) { if (fDischarging) presentRateTotal -= presentRate; else presentRateTotal += presentRate; } } RTStrmClose(pStrmStatus); } } } } } RTStrmClose(pStrmType); #undef POWER_OPEN } RTDirClose(pDir); } else /* !/sys */ { /* * The old /proc/acpi interface */ /* * Read the status of the powerline-adapter. */ rc = RTDirOpen(&pDir, "/proc/acpi/ac_adapter/"); if (RT_SUCCESS(rc)) { #define POWER_OPEN(s, n) RTStrmOpenF("r", s, "/proc/acpi/ac_adapter/%s/" n, DirEntry.szName) while (pThread->enmState == PDMTHREADSTATE_RUNNING) { rc = RTDirRead(pDir, &DirEntry, NULL); if (RT_FAILURE(rc)) break; if ( strcmp(DirEntry.szName, ".") == 0 || strcmp(DirEntry.szName, "..") == 0) continue; rc = POWER_OPEN(&pStrmStatus, "status"); if (RT_FAILURE(rc)) rc = POWER_OPEN(&pStrmStatus, "state"); if (RT_SUCCESS(rc)) { while (pThread->enmState == PDMTHREADSTATE_RUNNING) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); if (RT_FAILURE(rc)) break; if ( strstr(szLine, "Status:") != NULL || strstr(szLine, "state:") != NULL) { if (strstr(szLine, "on-line") != NULL) enmPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET; else enmPowerSource = PDM_ACPI_POWER_SOURCE_BATTERY; break; } } RTStrmClose(pStrmStatus); break; } } RTDirClose(pDir); #undef POWER_OPEN } /* * Read the status of all batteries and collect it into one. */ rc = RTDirOpen(&pDir, "/proc/acpi/battery/"); if (RT_SUCCESS(rc)) { #define POWER_OPEN(s, n) RTStrmOpenF("r", s, "/proc/acpi/battery/%s/" n, DirEntry.szName) bool fThisBatteryPresent = false; bool fThisDischarging = false; while (pThread->enmState == PDMTHREADSTATE_RUNNING) { rc = RTDirRead(pDir, &DirEntry, NULL); if (RT_FAILURE(rc)) break; if ( strcmp(DirEntry.szName, ".") == 0 || strcmp(DirEntry.szName, "..") == 0) continue; rc = POWER_OPEN(&pStrmStatus, "status"); /* there is a 2nd variant of that file */ if (RT_FAILURE(rc)) rc = POWER_OPEN(&pStrmStatus, "state"); if (RT_FAILURE(rc)) continue; PRTSTREAM pStrmInfo; rc = POWER_OPEN(&pStrmInfo, "info"); if (RT_FAILURE(rc)) { RTStrmClose(pStrmStatus); continue; } /* get 'present' status from the info file */ while (pThread->enmState == PDMTHREADSTATE_RUNNING) { rc = RTStrmGetLine(pStrmInfo, szLine, sizeof(szLine)); if (RT_FAILURE(rc)) break; if (strstr(szLine, "present:") != NULL) { if (strstr(szLine, "yes") != NULL) { fThisBatteryPresent = true; break; } } } if (fThisBatteryPresent) { fBatteryPresent = true; RTStrmRewind(pStrmInfo); /* get the maximum capacity from the info file */ while (pThread->enmState == PDMTHREADSTATE_RUNNING) { rc = RTStrmGetLine(pStrmInfo, szLine, sizeof(szLine)); if (RT_FAILURE(rc)) break; if (strstr(szLine, "last full capacity:") != NULL) { char *psz; int32_t maxCapacity = 0; rc = RTStrToInt32Ex(RTStrStripL(&szLine[19]), &psz, 0, &maxCapacity); if (RT_FAILURE(rc)) maxCapacity = 0; maxCapacityTotal += maxCapacity; break; } } /* get the current capacity/state from the status file */ int32_t presentRate = 0; bool fGotRemainingCapacity = false; bool fGotBatteryState = false; bool fGotCapacityState = false; bool fGotPresentRate = false; while ( ( !fGotRemainingCapacity || !fGotBatteryState || !fGotCapacityState || !fGotPresentRate) && pThread->enmState == PDMTHREADSTATE_RUNNING) { rc = RTStrmGetLine(pStrmStatus, szLine, sizeof(szLine)); if (RT_FAILURE(rc)) break; if (strstr(szLine, "remaining capacity:") != NULL) { char *psz; int32_t currentCapacity = 0; rc = RTStrToInt32Ex(RTStrStripL(&szLine[19]), &psz, 0, ¤tCapacity); if ( RT_SUCCESS(rc) && currentCapacity > 0) currentCapacityTotal += currentCapacity; fGotRemainingCapacity = true; } else if (strstr(szLine, "charging state:") != NULL) { if (strstr(szLine + 15, "discharging") != NULL) { fDischarging = true; fThisDischarging = true; } else if (strstr(szLine + 15, "charging") != NULL) fCharging = true; fGotBatteryState = true; } else if (strstr(szLine, "capacity state:") != NULL) { if (strstr(szLine + 15, "critical") != NULL) fCritical = true; fGotCapacityState = true; } if (strstr(szLine, "present rate:") != NULL) { char *psz; rc = RTStrToInt32Ex(RTStrStripL(&szLine[13]), &psz, 0, &presentRate); if (RT_FAILURE(rc)) presentRate = 0; fGotPresentRate = true; } } if (fThisDischarging) presentRateTotal -= presentRate; else presentRateTotal += presentRate; } RTStrmClose(pStrmStatus); RTStrmClose(pStrmInfo); } RTDirClose(pDir); #undef POWER_OPEN } } /* /proc/acpi */ /* atomic update of the state */ RTCritSectEnter(&pThis->CritSect); pThis->enmPowerSource = enmPowerSource; pThis->fBatteryPresent = fBatteryPresent; /* charging/discharging bits are mutual exclusive */ uint32_t uBs = PDM_ACPI_BAT_STATE_CHARGED; if (fDischarging) uBs = PDM_ACPI_BAT_STATE_DISCHARGING; else if (fCharging) uBs = PDM_ACPI_BAT_STATE_CHARGING; if (fCritical) uBs |= PDM_ACPI_BAT_STATE_CRITICAL; pThis->enmBatteryState = (PDMACPIBATSTATE)uBs; if (maxCapacityTotal > 0 && currentCapacityTotal > 0) { if (presentRateTotal < 0) presentRateTotal = -presentRateTotal; /* calculate the percentage */ pThis->enmBatteryRemainingCapacity = (PDMACPIBATCAPACITY)( ( (float)currentCapacityTotal / (float)maxCapacityTotal) * PDM_ACPI_BAT_CAPACITY_MAX); pThis->u32BatteryPresentRate = (uint32_t)(( (float)presentRateTotal / (float)maxCapacityTotal) * 1000); } else { /* unknown capacity / state */ pThis->enmBatteryRemainingCapacity = PDM_ACPI_BAT_CAPACITY_UNKNOWN; pThis->u32BatteryPresentRate = ~0; } RTCritSectLeave(&pThis->CritSect); /* wait a bit (e.g. Ubuntu/GNOME polls every 30 seconds) */ ASMAtomicWriteBool(&pThis->fDontPokePoller, true); rc = RTSemEventWait(pThis->hPollerSleepEvent, 20000); } return VINF_SUCCESS; } static DECLCALLBACK(int) drvACPIPollerWakeup(PPDMDRVINS pDrvIns, PPDMTHREAD pThread) { PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI); RTSemEventSignal(pThis->hPollerSleepEvent); if (!ASMAtomicReadBool(&pThis->fDontPokePoller)) RTThreadPoke(pThread->Thread); return VINF_SUCCESS; } #endif /* RT_OS_LINUX */ /** * Destruct a driver instance. * * Most VM resources are freed by the VM. This callback is provided so that any non-VM * resources can be freed correctly. * * @param pDrvIns The driver instance data. */ static DECLCALLBACK(void) drvACPIDestruct(PPDMDRVINS pDrvIns) { PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI); LogFlow(("drvACPIDestruct\n")); PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns); #ifdef RT_OS_LINUX if (pThis->hPollerSleepEvent != NIL_RTSEMEVENT) { RTSemEventDestroy(pThis->hPollerSleepEvent); pThis->hPollerSleepEvent = NIL_RTSEMEVENT; } RTCritSectDelete(&pThis->CritSect); #endif } /** * Construct an ACPI driver instance. * * @copydoc FNPDMDRVCONSTRUCT */ static DECLCALLBACK(int) drvACPIConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags) { PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI); PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns); int rc = VINF_SUCCESS; /* * Init the static parts. */ pThis->pDrvIns = pDrvIns; #ifdef RT_OS_LINUX pThis->hPollerSleepEvent = NIL_RTSEMEVENT; #endif /* IBase */ pDrvIns->IBase.pfnQueryInterface = drvACPIQueryInterface; /* IACPIConnector */ pThis->IACPIConnector.pfnQueryPowerSource = drvACPIQueryPowerSource; pThis->IACPIConnector.pfnQueryBatteryStatus = drvACPIQueryBatteryStatus; /* * Validate the config. */ if (!CFGMR3AreValuesValid(pCfg, "\0")) return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES; /* * Check that no-one is attached to us. */ AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER, ("Configuration error: Not possible to attach anything to this driver!\n"), VERR_PDM_DRVINS_NO_ATTACH); /* * Query the ACPI port interface. */ pThis->pPort = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIACPIPORT); if (!pThis->pPort) { AssertMsgFailed(("Configuration error: the above device/driver didn't export the ACPI port interface!\n")); return VERR_PDM_MISSING_INTERFACE_ABOVE; } #ifdef RT_OS_LINUX /* * Start the poller thread. */ rc = PDMDrvHlpThreadCreate(pDrvIns, &pThis->pPollerThread, pThis, drvACPIPoller, drvACPIPollerWakeup, 0, RTTHREADTYPE_INFREQUENT_POLLER, "ACPI Poller"); if (RT_FAILURE(rc)) return rc; rc = RTCritSectInit(&pThis->CritSect); if (RT_FAILURE(rc)) return rc; rc = RTSemEventCreate(&pThis->hPollerSleepEvent); #endif return rc; } /** * ACPI driver registration record. */ const PDMDRVREG g_DrvACPI = { /* u32Version */ PDM_DRVREG_VERSION, /* szName */ "ACPIHost", /* szRCMod */ "", /* szR0Mod */ "", /* pszDescription */ "ACPI Host Driver", /* fFlags */ PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT, /* fClass. */ PDM_DRVREG_CLASS_ACPI, /* cMaxInstances */ ~0U, /* cbInstance */ sizeof(DRVACPI), /* pfnConstruct */ drvACPIConstruct, /* pfnDestruct */ drvACPIDestruct, /* pfnRelocate */ NULL, /* pfnIOCtl */ NULL, /* pfnPowerOn */ NULL, /* pfnReset */ NULL, /* pfnSuspend */ NULL, /* pfnResume */ NULL, /* pfnAttach */ NULL, /* pfnDetach */ NULL, /* pfnPowerOff */ NULL, /* pfnSoftReset */ NULL, /* u32EndVersion */ PDM_DRVREG_VERSION };