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diff --git a/src/VBox/Devices/PC/DrvACPI.cpp b/src/VBox/Devices/PC/DrvACPI.cpp
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+++ b/src/VBox/Devices/PC/DrvACPI.cpp
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+/* $Id: DrvACPI.cpp $ */
+/** @file
+ * DrvACPI - ACPI Host Driver.
+ */
+
+/*
+ * Copyright (C) 2006-2019 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 <iprt/win/windows.h>
+#endif
+
+#include <VBox/vmm/pdmdrv.h>
+#include <VBox/log.h>
+#include <iprt/asm.h>
+#include <iprt/assert.h>
+#include <iprt/string.h>
+#include <iprt/uuid.h>
+
+#ifdef RT_OS_LINUX
+# include <iprt/critsect.h>
+# include <iprt/dir.h>
+# include <iprt/semaphore.h>
+# include <iprt/stream.h>
+#endif
+
+#ifdef RT_OS_DARWIN
+# include <Carbon/Carbon.h>
+# include <IOKit/ps/IOPowerSources.h>
+# include <IOKit/ps/IOPSKeys.h>
+# undef PVM /* This still messed up in the 10.9 SDK. Sigh. */
+#endif
+
+#ifdef RT_OS_FREEBSD
+# include <sys/ioctl.h>
+# include <dev/acpica/acpiio.h>
+# include <sys/types.h>
+# include <sys/sysctl.h>
+# include <stdio.h>
+# include <errno.h>
+# include <fcntl.h>
+# include <unistd.h>
+#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)
+ RT_NOREF(pInterface);
+ 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)
+ RT_NOREF(pInterface);
+ *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)
+ RT_NOREF(pInterface);
+ int fAcLine = 0;
+ size_t cbParameter = sizeof(fAcLine);
+
+ int rc = sysctlbyname("hw.acpi.acline", &fAcLine, &cbParameter, NULL, 0);
+
+ 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? */
+ RT_NOREF(pInterface);
+ *pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET;
+
+#endif /* !RT_OS_FREEBSD */
+ return VINF_SUCCESS;
+}
+
+/**
+ * @interface_method_impl{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 = UINT32_MAX; /* present rate is unknown */
+
+#if defined(RT_OS_WINDOWS)
+ RT_NOREF(pInterface);
+ 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)
+ RT_NOREF(pInterface);
+ 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)
+ RT_NOREF(pInterface);
+ /* 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, 0);
+ 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, 0);
+ 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;
+ RTDIR hDir = NIL_RTDIR;
+ 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 */
+ bool fDataChanged; /* if battery status data changed during last poll */
+ 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 */
+ PDMACPIBATCAPACITY enmBatteryRemainingCapacity; /* total remaining capacity of vbox batt */
+ uint32_t u32BatteryPresentRate; /* total present (dis)charging rate of vbox batt */
+
+ int rc = RTDirOpen(&hDir, "/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(hDir, &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, &currentCapacity);
+ if ( RT_SUCCESS(rc)
+ && currentCapacity > 0)
+ currentCapacityTotal += currentCapacity;
+ }
+ RTStrmClose(pStrmStatus);
+ }
+ rc = POWER_OPEN(&pStrmStatus, "power_now");
+ if (RT_FAILURE(rc))
+ 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(hDir);
+ }
+ else /* !/sys */
+ {
+ /*
+ * The old /proc/acpi interface
+ */
+ /*
+ * Read the status of the powerline-adapter.
+ */
+ rc = RTDirOpen(&hDir, "/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(hDir, &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(hDir);
+#undef POWER_OPEN
+ }
+
+ /*
+ * Read the status of all batteries and collect it into one.
+ */
+ rc = RTDirOpen(&hDir, "/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(hDir, &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, &currentCapacity);
+ 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(hDir);
+#undef POWER_OPEN
+ }
+ } /* /proc/acpi */
+
+ /* atomic update of the state */
+ RTCritSectEnter(&pThis->CritSect);
+
+ /* 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;
+
+ if (maxCapacityTotal > 0 && currentCapacityTotal > 0)
+ {
+ if (presentRateTotal < 0)
+ presentRateTotal = -presentRateTotal;
+
+ /* calculate the percentage */
+
+ enmBatteryRemainingCapacity =
+ (PDMACPIBATCAPACITY)( ( (float)currentCapacityTotal
+ / (float)maxCapacityTotal)
+ * PDM_ACPI_BAT_CAPACITY_MAX);
+ u32BatteryPresentRate =
+ (uint32_t)(( (float)presentRateTotal
+ / (float)maxCapacityTotal) * 1000);
+ }
+ else
+ {
+ /* unknown capacity / state */
+ enmBatteryRemainingCapacity = PDM_ACPI_BAT_CAPACITY_UNKNOWN;
+ u32BatteryPresentRate = ~0;
+ }
+
+ if ( pThis->enmPowerSource == enmPowerSource
+ && pThis->fBatteryPresent == fBatteryPresent
+ && pThis->enmBatteryState == (PDMACPIBATSTATE) uBs
+ && pThis->enmBatteryRemainingCapacity == enmBatteryRemainingCapacity
+ && pThis->u32BatteryPresentRate == u32BatteryPresentRate)
+ {
+ fDataChanged = false;
+ }
+ else
+ {
+ fDataChanged = true;
+
+ pThis->enmPowerSource = enmPowerSource;
+ pThis->fBatteryPresent = fBatteryPresent;
+ pThis->enmBatteryState = (PDMACPIBATSTATE)uBs;
+ pThis->enmBatteryRemainingCapacity = enmBatteryRemainingCapacity;
+ pThis->u32BatteryPresentRate = u32BatteryPresentRate;
+ }
+
+ RTCritSectLeave(&pThis->CritSect);
+
+ if (fDataChanged)
+ pThis->pPort->pfnBatteryStatusChangeEvent(pThis->pPort);
+
+ /* 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)
+{
+ LogFlow(("drvACPIDestruct\n"));
+ PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
+
+#ifdef RT_OS_LINUX
+ PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI);
+ 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)
+{
+ RT_NOREF(fFlags);
+ PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
+ PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI);
+ 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
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 04:43:33 +0000