EXTERN_C VOID WINAPI
PlatformResumeSystem (void)
{
SETFNAME (_T ("PlatformResumeSystem"));
PMLOGMSG (ZONE_RESUME, (_T ("+%s: suspend flag is %d\r\n"), pszFname, gfSystemSuspended));
// Was this an unexpected resume event? If so, there may be a thread priority problem
// or some piece of software suspended the system without calling SetSystemPowerState().
DEBUGCHK (gfSystemSuspended);
if (!gfSystemSuspended)
{
// Unexpected resume -- go to the resuming state. This should not happen unless
// somebody is illegally calling PowerOffSystem() directly.
PMLOGMSG (ZONE_WARN || ZONE_RESUME, (_T ("%s: WARNING: unexpected resume!\r\n"), pszFname));
// Go into the new state. OEMs that choose to support unexpected resumes may want to
// lock PM variables with PMLOCK(), then set the curDx and actualDx values for all
// devices to PwrDeviceUnspecified before calling PmSetSystemPowerState_I(). This will
// force an update IOCTL to all devices.
DEBUGCHK (ghevRestartTimers != NULL);
SetEvent (ghevRestartTimers);
}
else
{
DWORD dwWakeSource, dwBytesReturned;
BOOL fOk;
// Get the system wake source to help determine which power state we resume into:
fOk = KernelIoControl (IOCTL_HAL_GET_WAKE_SOURCE, NULL, 0, &dwWakeSource,
sizeof (dwWakeSource), &dwBytesReturned);
if (fOk)
{
// IOCTL succeeded (not all platforms necessarily support it), but sanity check
// the return value, just in case.
if (dwBytesReturned != sizeof (dwWakeSource))
{
PMLOGMSG (ZONE_WARN, (_T ("%s: KernelIoControl() returned an invalid size %d\r\n"),
pszFname, dwBytesReturned));
}
else
{
// Look for an activity timer corresponding to this wake source.
PACTIVITY_TIMER pat = ActivityTimerFindByWakeSource (dwWakeSource);
if (pat != NULL)
{
PMLOGMSG (ZONE_RESUME, (_T ("%s: signaling '%s' activity at resume\r\n"),
pszFname, pat->pszName));
// Is there an activity timer we need to reset?
if (pat->hevReset != NULL)
{
// Found a timer, elevate the timer management priority thread so that it
// executes before the suspending thread.
DWORD dwOldPriority = CeGetThreadPriority (ghtActivityTimers);
DWORD dwNewPriority = (CeGetThreadPriority (GetCurrentThread ()) - 1);
DEBUGCHK (dwNewPriority >= 0);
SetEvent (pat->hevReset);
CeSetThreadPriority (ghtActivityTimers, dwNewPriority);
CeSetThreadPriority (ghtActivityTimers, dwOldPriority);
}
}
}
}
}
PMLOGMSG (ZONE_RESUME, (_T ("-%s\r\n"), pszFname));
}
void S3C2450DISP::SetVisibleSurface( GPESurf *pTempSurf, BOOL bWaitForVBlank)
{
static int timeoutcnt=0;
DWORD we;
#ifdef HIGH_PRIORITY_INTR
int iPriority;
HANDLE hThread;
hThread = GetCurrentThread();
iPriority = CeGetThreadPriority(hThread);
CeSetThreadPriority(hThread, DISPDRV_IST_PRIORITY);
#endif
S3C2450Surf *pSurf = (S3C2450Surf *) pTempSurf;
EnterCriticalSection(&m_CS);
// assume Synchronous to VSYNC
EnableInterrupt();
we = WaitForSingleObject(m_hVSYNCInterruptEvent,1000/*INFINITE*/);
DisableInterrupt();
InterruptDone(m_dwVSYNCSysIntr);
if(we != WAIT_OBJECT_0)
{
timeoutcnt++;
RETAILMSG(1,(TEXT("Surface Flipping Time Out %d !!!\n"), timeoutcnt));
for(int i=0;i<78;i++)
RETAILMSG(1,(TEXT("0x%08X = 0x%08X\n"),(DWORD*)((DWORD*)m_pLCDReg + i),*(DWORD*)((DWORD*)m_pLCDReg + i)));
RETAILMSG(1,(TEXT("saved_x=%d"),saved_x));
RETAILMSG(1,(TEXT("saved_y=%d"),saved_y));
RETAILMSG(1,(TEXT("saved_width=%d"),saved_width));
RETAILMSG(1,(TEXT("saved_height=%d"),saved_height));
while(1);
}
if(pSurf->m_bIsOverlay == FALSE)
{
//RETAILMSG(1,(TEXT("pSurf->OffsetInVideoMemory()=0x%08X\n"),pSurf->OffsetInVideoMemory()));
m_pVisibleSurface = pSurf;
m_pLCDReg->VIDW00ADD0B0 = (UINT32)(pSurf->OffsetInVideoMemory() + IMAGE_FRAMEBUFFER_DMA_BASE);
// buffer end address
m_pLCDReg->VIDW00ADD1B0 = (UINT32)(pSurf->OffsetInVideoMemory() + IMAGE_FRAMEBUFFER_DMA_BASE) + (LCD_XSIZE_TFT*LCD_YSIZE_TFT*2);
// buffer size
m_pLCDReg->VIDW00ADD2B0 = (0<<VIDWxADD2_OFFSET_SIZE_S)|(LCD_XSIZE_TFT*2);
}
else
{
m_pLCDReg->VIDW01ADD0 = (UINT32)(pSurf->OffsetInVideoMemory() + IMAGE_FRAMEBUFFER_DMA_BASE);
// buffer end address
m_pLCDReg->VIDW01ADD1 = (UINT32)(pSurf->OffsetInVideoMemory() + IMAGE_FRAMEBUFFER_DMA_BASE) +
(pSurf->Width()*pSurf->Height()*2);
// buffer size
m_pLCDReg->VIDW01ADD2 = (0<<VIDWxADD2_OFFSET_SIZE_S)|(pSurf->Width()*2);
}
RETAILMSG(DBGLCD, (TEXT("S3C2450DISP::SetVisibleSurface\r\n")));
LeaveCriticalSection(&m_CS);
#ifdef HIGH_PRIORITY_INTR
CeSetThreadPriority(hThread, iPriority);
#endif
}
EXTERN_C DWORD WINAPI
PlatformSetSystemPowerState (LPCTSTR pszName, BOOL fForce, BOOL fInternal)
{
DWORD dwStatus = ERROR_SUCCESS;
PSYSTEM_POWER_STATE pNewSystemPowerState = NULL;
PDEVICE_POWER_RESTRICTION pNewCeilingDx = NULL;
BOOL fDoTransition = FALSE;
INT iPreSuspendPriority = 0;
static BOOL fFirstCall = TRUE;
SETFNAME (_T ("PlatformSetSystemPowerState"));
// Read system power state variables and construct new lists:
if (gfFileSystemsAvailable)
PmUpdateSystemPowerStatesIfChanged ();
dwStatus = RegReadSystemPowerState (pszName, &pNewSystemPowerState, &pNewCeilingDx);
// Did we get registry information about the new power state?
if (dwStatus == ERROR_SUCCESS)
{
BOOL fSuspendSystem = FALSE;
static BOOL fWantStartupScreen = FALSE;
DWORD dwNewStateFlags = pNewSystemPowerState->dwFlags;
// Assume we will update the system power state:
fDoTransition = TRUE;
// Are we going to suspend the system as a whole?
if ((dwNewStateFlags &
(POWER_STATE_SUSPEND | POWER_STATE_OFF | POWER_STATE_CRITICAL | POWER_STATE_RESET)) != 0)
{
fSuspendSystem = TRUE;
}
// A "critical" suspend might mean we have totally lost battery power and need
// to suspend really quickly. Depending on the platform, OEMs may be able
// to bypass driver notification entirely and rely on xxx_PowerDown() notifications
// to suspend gracefully. Or they may be able to implement a critical suspend
// kernel ioctl. This sample implementation is very generic and simply sets the
// POWER_FORCE flag, which is not used.
if (dwNewStateFlags & (POWER_STATE_CRITICAL | POWER_STATE_OFF | POWER_STATE_RESET))
{
fForce = TRUE;
}
// If everything seems OK, do the set operation:
if (fDoTransition)
{
POWER_BROADCAST_BUFFER pbb;
PDEVICE_LIST pdl;
BOOL fResumeSystem = FALSE;
// Send out system power state change notifications:
pbb.Message = PBT_TRANSITION;
pbb.Flags = pNewSystemPowerState->dwFlags;
pbb.Length = _tcslen (pNewSystemPowerState->pszName) + 1; // Char count not byte count for now
if (pbb.Length > MAX_PATH)
{
// Truncate the system power state name -- note, we actually have MAX_PATH + 1
// characters available.
pbb.Length = MAX_PATH;
}
_tcsncpy_s (pbb.SystemPowerState, _countof (pbb.SystemPowerState),
pNewSystemPowerState->pszName, pbb.Length);
pbb.Length *= sizeof (pbb.SystemPowerState[0]); // Convert to byte count
GenerateNotifications ((PPOWER_BROADCAST) & pbb);
// Is GWES ready?
if (!gfGwesReady)
{
if (WaitForAPIReady (SH_GDI, 0) == WAIT_OBJECT_0)
{
gfGwesReady = TRUE;
}
}
// Are we suspending?
if (fSuspendSystem && gpfnGwesPowerDown != NULL)
{
// Start the process of suspending GWES:
if (gfGwesReady)
{
fWantStartupScreen = gpfnGwesPowerDown ();
}
}
// Update global system state variables:
PMLOCK ();
PSYSTEM_POWER_STATE pOldSystemPowerState = gpSystemPowerState;
PDEVICE_POWER_RESTRICTION pOldCeilingDx = gpCeilingDx;
if (gpSystemPowerState != NULL
&& (gpSystemPowerState->
dwFlags & (POWER_STATE_SUSPEND | POWER_STATE_OFF | POWER_STATE_CRITICAL)) != 0)
{
// We are exiting a suspended state:
fResumeSystem = TRUE;
}
gpSystemPowerState = pNewSystemPowerState;
gpCeilingDx = pNewCeilingDx;
PMUNLOCK ();
// Are we suspending, resuming, or neither?
if (fSuspendSystem)
{
INT iCurrentPriority;
// We're suspending: update all devices other than block devices,
// in case any of them need to access the registry or write files.
PMLOGMSG (ZONE_PLATFORM || ZONE_RESUME,
(_T ("%s: suspending - notifying non-block drivers\r\n"), pszFname));
for (pdl = gpDeviceLists; pdl != NULL; pdl = pdl->pNext)
{
if (*pdl->pGuid != idBlockDevices)
{
UpdateClassDeviceStates (pdl);
}
}
// Notify the kernel that we are about to suspend. This gives the
// kernel an opportunity to clear wake source flags before we initiate
// the suspend process. If we don't do this and a wake source interrupt
// occurs between the time we call PowerOffSystem() and the time
// OEMPowerOff() is invoked, it is hard for the kernel to know whether or
// not to suspend.
PMLOGMSG (ZONE_PLATFORM || ZONE_RESUME,
(_T ("%s: calling KernelIoControl(IOCTL_HAL_PRESUSPEND)\r\n"), pszFname));
KernelIoControl (IOCTL_HAL_PRESUSPEND, NULL, 0, NULL, 0, NULL);
iCurrentPriority = CeGetThreadPriority (GetCurrentThread ());
DEBUGCHK (iCurrentPriority != THREAD_PRIORITY_ERROR_RETURN);
if (iCurrentPriority != THREAD_PRIORITY_ERROR_RETURN)
{
CeSetThreadPriority (GetCurrentThread (), giPreSuspendPriority);
Sleep (0);
CeSetThreadPriority (GetCurrentThread (), iCurrentPriority);
}
// Notify file systems that their block drivers will soon go away.
// After making this call, this thread is the only one that can access
// the file system (including registry and device drivers) without
// blocking. Unfortunately, this API takes and holds the file system
// critical section, so other threads attempting to access the registry
// or files may cause priority inversions. To avoid priority problem
// that may starve the Power Manager, we may raise our own priority to a
// high level. Do this if giSuspendPriority is non-zero.
if (giSuspendPriority != 0)
{
iPreSuspendPriority = CeGetThreadPriority (GetCurrentThread ());
DEBUGCHK (iPreSuspendPriority != THREAD_PRIORITY_ERROR_RETURN);
PMLOGMSG (ZONE_PLATFORM,
(_T
("%s: suspending: raising thread priority for 0x%08x from %d to %d\r\n"),
pszFname, GetCurrentThreadId (), iPreSuspendPriority,
giSuspendPriority));
CeSetThreadPriority (GetCurrentThread (), giSuspendPriority);
}
// Discard code pages from drivers. This is a diagnostic tool to
// forcibly expose paging-related bugs that could cause apparently
// random system crashes or hangs. Optionally, OEMs can disable this
// for production systems to speed up resume times. We have to call
// PageOutMode before FileSys Shutdown. Otherwise, it cause dead lock
// between filesystem and loader.
if (gfPageOutAllModules)
{
ForcePageout ();
}
if (g_pSysRegistryAccess)
g_pSysRegistryAccess->EnterLock ();
gfFileSystemsAvailable = FALSE;
if ((dwNewStateFlags & POWER_STATE_RESET) != 0)
{
// Is this to be a cold boot?
if (_tcscmp (pszName, _T ("coldreboot")) == 0)
{
SetCleanRebootFlag ();
}
}
FileSystemPowerFunction (FSNOTIFY_POWER_OFF);
// Update block device power states:
PMLOGMSG (ZONE_PLATFORM || ZONE_RESUME,
(_T ("%s: suspending - notifying block drivers\r\n"), pszFname));
pdl = GetDeviceListFromClass (&idBlockDevices);
if (pdl != NULL)
{
UpdateClassDeviceStates (pdl);
}
// Handle resets and shutdowns here, after flushing files. Since Windows CE does
// not define a standard mechanism for handling shutdown (via POWER_STATE_OFF),
// OEMs will need to fill in the appropriate code here. Similarly, if an OEM does
// not support IOCTL_HAL_REBOOT, they should not support POWER_STATE_RESET.
if ((dwNewStateFlags & POWER_STATE_RESET) != 0)
{
// Should not return from this call, but if we do just suspend the system:
KernelLibIoControl ((HANDLE) KMOD_OAL, IOCTL_HAL_REBOOT, NULL, 0, NULL, 0,
NULL);
RETAILMSG (TRUE,
(_T
("PM: PlatformSetSystemPowerState: KernelIoControl(IOCTL_HAL_REBOOT) returned!\r\n")));
DEBUGCHK (FALSE); // Break into the debugger.
}
}
else if (fResumeSystem)
{
// We're waking up from a resume -- update block device power states
// so we can access the registry and/or files.
PMLOGMSG (ZONE_PLATFORM || ZONE_RESUME,
(_T ("%s: resuming - notifying block drivers\r\n"), pszFname));
pdl = GetDeviceListFromClass (&idBlockDevices);
if (pdl != NULL)
{
UpdateClassDeviceStates (pdl);
}
// Notify file systems that their block drivers are back.
FileSystemPowerFunction (FSNOTIFY_POWER_ON);
gfFileSystemsAvailable = TRUE;
if (g_pSysRegistryAccess)
g_pSysRegistryAccess->LeaveLock ();
// Update all devices other than block devices:
PMLOGMSG (ZONE_PLATFORM || ZONE_RESUME,
(_T ("%s: resuming - notifying block drivers\r\n"), pszFname));
for (pdl = gpDeviceLists; pdl != NULL; pdl = pdl->pNext)
{
if (*pdl->pGuid != idBlockDevices)
{
UpdateClassDeviceStates (pdl);
}
}
// Tell GWES to wake up:
if (gpfnGwesPowerUp != NULL && gfGwesReady)
{
gpfnGwesPowerUp (fWantStartupScreen);
fWantStartupScreen = FALSE;
}
// Send out resume notification:
pbb.Message = PBT_RESUME;
pbb.Flags = 0;
pbb.Length = 0;
pbb.SystemPowerState[0] = 0;
GenerateNotifications ((PPOWER_BROADCAST) & pbb);
}
else
{
// Update all devices without any particular ordering:
UpdateAllDeviceStates ();
}
// Release the old state information:
SystemPowerStateDestroy (pOldSystemPowerState);
while (pOldCeilingDx != NULL)
{
PDEVICE_POWER_RESTRICTION pdpr = pOldCeilingDx->pNext;
PowerRestrictionDestroy (pOldCeilingDx);
pOldCeilingDx = pdpr;
}
// Are we suspending?
if (fSuspendSystem)
{
// Set a flag to notify the resume thread that this was a controlled suspend.
gfSystemSuspended = TRUE;
PMLOGMSG (ZONE_PLATFORM
|| ZONE_RESUME, (_T ("%s: calling PowerOffSystem()\r\n"), pszFname));
PowerOffSystem (); // Sets a flag in the kernel for the scheduler.
Sleep (0); // Force the scheduler to run.
PMLOGMSG (ZONE_PLATFORM
|| ZONE_RESUME, (_T ("%s: back from PowerOffSystem()\r\n"), pszFname));
// Clear the suspend flag:
gfSystemSuspended = FALSE;
}
}
else
{
// Release the unused new state information:
SystemPowerStateDestroy (pNewSystemPowerState);
while (pNewCeilingDx != NULL)
{
PDEVICE_POWER_RESTRICTION pdpr = pNewCeilingDx->pNext;
PowerRestrictionDestroy (pNewCeilingDx);
pNewCeilingDx = pdpr;
}
}
}
// Restore our priority if we updated it during a suspend transition:
if (giSuspendPriority != 0 && iPreSuspendPriority != 0)
{
PMLOGMSG (ZONE_PLATFORM, (_T ("%s: restoring thread priority to %d\r\n"),
pszFname, iPreSuspendPriority));
CeSetThreadPriority (GetCurrentThread (), iPreSuspendPriority);
}
return dwStatus;
}
