thead-kernel/drivers/gpu/drm/img-rogue/pvr_notifier.c

/*************************************************************************/ /*!
@File
@Title          PowerVR notifier interface
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@License        Dual MIT/GPLv2

The contents of this file are subject to the MIT license as set out below.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 2 ("GPL") in which case the provisions
of GPL are applicable instead of those above.

If you wish to allow use of your version of this file only under the terms of
GPL, and not to allow others to use your version of this file under the terms
of the MIT license, indicate your decision by deleting the provisions above
and replace them with the notice and other provisions required by GPL as set
out in the file called "GPL-COPYING" included in this distribution. If you do
not delete the provisions above, a recipient may use your version of this file
under the terms of either the MIT license or GPL.

This License is also included in this distribution in the file called
"MIT-COPYING".

EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/ /**************************************************************************/

#include "img_defs.h"
#include "allocmem.h"
#include "dllist.h"

#include "device.h"
#include "pvr_notifier.h"
#include "pvrsrv.h"
#include "pvrversion.h"
#include "connection_server.h"

#include "osfunc.h"
#include "sofunc_pvr.h"

#define PVR_DUMP_DRIVER_INFO(x, y)														\
	PVR_DUMPDEBUG_LOG("%s info: %d.%d @ %8d (%s) build options: 0x%08x",				\
					   (x),																\
					   PVRVERSION_UNPACK_MAJ((y).ui32BuildVersion),						\
					   PVRVERSION_UNPACK_MIN((y).ui32BuildVersion),						\
					   (y).ui32BuildRevision,											\
					   (BUILD_TYPE_DEBUG == (y).ui32BuildType) ? "debug":"release",		\
					   (y).ui32BuildOptions);

#if !defined(WINDOW_SYSTEM)
#define WINDOW_SYSTEM "Unknown"
#endif

#define IS_DECLARED(x) (x[0] != '\0')

/*************************************************************************/ /*!
Command Complete Notifier Interface
*/ /**************************************************************************/

typedef struct PVRSRV_CMDCOMP_NOTIFY_TAG
{
	PVRSRV_CMDCOMP_HANDLE	hCmdCompHandle;
	PFN_CMDCOMP_NOTIFY		pfnCmdCompleteNotify;
	DLLIST_NODE				sListNode;
} PVRSRV_CMDCOMP_NOTIFY;

/* Head of the list of callbacks called when command complete happens */
static DLLIST_NODE g_sCmdCompNotifyHead;
static POSWR_LOCK g_hCmdCompNotifyLock;

PVRSRV_ERROR
PVRSRVCmdCompleteInit(void)
{
	PVRSRV_ERROR eError;

	eError = OSWRLockCreate(&g_hCmdCompNotifyLock);
	PVR_RETURN_IF_ERROR(eError);

	dllist_init(&g_sCmdCompNotifyHead);

	return PVRSRV_OK;
}

void
PVRSRVCmdCompleteDeinit(void)
{
	/* Check that all notify function have been unregistered */
	if (!dllist_is_empty(&g_sCmdCompNotifyHead))
	{
		PDLLIST_NODE psNode;

		PVR_DPF((PVR_DBG_ERROR,
				"%s: Command complete notify list is not empty!", __func__));

		/* Clean up any stragglers */
		psNode = dllist_get_next_node(&g_sCmdCompNotifyHead);
		while (psNode)
		{
			PVRSRV_CMDCOMP_NOTIFY *psNotify;

			dllist_remove_node(psNode);

			psNotify = IMG_CONTAINER_OF(psNode, PVRSRV_CMDCOMP_NOTIFY, sListNode);
			OSFreeMem(psNotify);

			psNode = dllist_get_next_node(&g_sCmdCompNotifyHead);
		}
	}

	if (g_hCmdCompNotifyLock)
	{
		OSWRLockDestroy(g_hCmdCompNotifyLock);
	}
}

PVRSRV_ERROR
PVRSRVRegisterCmdCompleteNotify(IMG_HANDLE *phNotify,
								PFN_CMDCOMP_NOTIFY pfnCmdCompleteNotify,
								PVRSRV_CMDCOMP_HANDLE hCmdCompHandle)
{
	PVRSRV_CMDCOMP_NOTIFY *psNotify;

	PVR_LOG_RETURN_IF_INVALID_PARAM(phNotify, "phNotify");
	PVR_LOG_RETURN_IF_INVALID_PARAM(pfnCmdCompleteNotify, "pfnCmdCompleteNotify");
	PVR_LOG_RETURN_IF_INVALID_PARAM(hCmdCompHandle, "hCmdCompHandle");

	psNotify = OSAllocMem(sizeof(*psNotify));
	PVR_LOG_RETURN_IF_NOMEM(psNotify, "psNotify");

	/* Set-up the notify data */
	psNotify->hCmdCompHandle = hCmdCompHandle;
	psNotify->pfnCmdCompleteNotify = pfnCmdCompleteNotify;

	/* Add it to the list of Notify functions */
	OSWRLockAcquireWrite(g_hCmdCompNotifyLock);
	dllist_add_to_tail(&g_sCmdCompNotifyHead, &psNotify->sListNode);
	OSWRLockReleaseWrite(g_hCmdCompNotifyLock);

	*phNotify = psNotify;

	return PVRSRV_OK;
}

PVRSRV_ERROR
PVRSRVUnregisterCmdCompleteNotify(IMG_HANDLE hNotify)
{
	PVRSRV_CMDCOMP_NOTIFY *psNotify;

	psNotify = (PVRSRV_CMDCOMP_NOTIFY *) hNotify;
	PVR_LOG_RETURN_IF_INVALID_PARAM(psNotify, "hNotify");

	OSWRLockAcquireWrite(g_hCmdCompNotifyLock);
	dllist_remove_node(&psNotify->sListNode);
	OSWRLockReleaseWrite(g_hCmdCompNotifyLock);

	OSFreeMem(psNotify);

	return PVRSRV_OK;
}

void
PVRSRVNotifyCommandCompletion(PVRSRV_CMDCOMP_HANDLE hCmdCompCallerHandle)
{
#if !defined(NO_HARDWARE)
	DLLIST_NODE *psNode, *psNext;

	/* Call notify callbacks to check if blocked work items can now proceed */
	OSWRLockAcquireRead(g_hCmdCompNotifyLock);
	dllist_foreach_node(&g_sCmdCompNotifyHead, psNode, psNext)
	{
		PVRSRV_CMDCOMP_NOTIFY *psNotify =
			IMG_CONTAINER_OF(psNode, PVRSRV_CMDCOMP_NOTIFY, sListNode);

		if (hCmdCompCallerHandle != psNotify->hCmdCompHandle)
		{
			psNotify->pfnCmdCompleteNotify(psNotify->hCmdCompHandle);
		}
	}
	OSWRLockReleaseRead(g_hCmdCompNotifyLock);
#endif
}

inline void
PVRSRVSignalGlobalEO(void)
{
	PVRSRV_DATA *psPVRSRVData = PVRSRVGetPVRSRVData();

	if (psPVRSRVData->hGlobalEventObject)
	{
		OSEventObjectSignal(psPVRSRVData->hGlobalEventObject);
	}
}

inline void
PVRSRVCheckStatus(PVRSRV_CMDCOMP_HANDLE hCmdCompCallerHandle)
{
	PVRSRVNotifyCommandCompletion(hCmdCompCallerHandle);
	PVRSRVSignalGlobalEO();
}

/*************************************************************************/ /*!
Debug Notifier Interface
*/ /**************************************************************************/

/* Lockdep sees both locks as the same class due to same struct used thus warns
 * about a possible deadlock (false positive),
 * using nested api we can supply separate Class'
 * */
#define DN_LOCKCLASS_DRIVER 0
#define DN_LOCKCLASS_DEVICE 1

typedef struct DEBUG_REQUEST_ENTRY_TAG
{
	IMG_UINT32      ui32RequesterID;
	DLLIST_NODE     sListHead;
} DEBUG_REQUEST_ENTRY;

typedef struct DEBUG_REQUEST_TABLE_TAG
{
	POSWR_LOCK              hLock;
	DEBUG_REQUEST_ENTRY     asEntry[1];
} DEBUG_REQUEST_TABLE;

typedef struct DEBUG_REQUEST_NOTIFY_TAG
{
	IMG_HANDLE              hDebugTable;
	PVRSRV_DBGREQ_HANDLE    hDbgRequestHandle;
	PFN_DBGREQ_NOTIFY       pfnDbgRequestNotify;
	IMG_UINT32              ui32RequesterID;
	DLLIST_NODE             sListNode;
} DEBUG_REQUEST_NOTIFY;

static DEBUG_REQUEST_TABLE *g_psDriverDebugTable;

static const IMG_UINT32 g_aui32DebugOrderTable[] = {
	DEBUG_REQUEST_SRV,
	DEBUG_REQUEST_RGX,
	DEBUG_REQUEST_SYS,
	DEBUG_REQUEST_APPHINT,
	DEBUG_REQUEST_HTB,
	DEBUG_REQUEST_DC,
	DEBUG_REQUEST_SYNCCHECKPOINT,
	DEBUG_REQUEST_SYNCTRACKING,
	DEBUG_REQUEST_ANDROIDSYNC,
	DEBUG_REQUEST_FALLBACKSYNC,
	DEBUG_REQUEST_LINUXFENCE
};
static const IMG_UINT32 g_ui32DebugOrderTableReqCount = ARRAY_SIZE(g_aui32DebugOrderTable);

static PVRSRV_ERROR
_RegisterDebugTableI(DEBUG_REQUEST_TABLE **ppsDebugTable)
{
	DEBUG_REQUEST_TABLE *psDebugTable;
	IMG_UINT32 i;
	PVRSRV_ERROR eError;

	if (*ppsDebugTable)
	{
		return PVRSRV_ERROR_DBGTABLE_ALREADY_REGISTERED;
	}

	psDebugTable = OSAllocMem(sizeof(DEBUG_REQUEST_TABLE) +
							  (sizeof(DEBUG_REQUEST_ENTRY) * (g_ui32DebugOrderTableReqCount-1)));
	PVR_RETURN_IF_NOMEM(psDebugTable);

	eError = OSWRLockCreate(&psDebugTable->hLock);
	PVR_GOTO_IF_ERROR(eError, ErrorFreeDebugTable);

	/* Init the list heads */
	for (i = 0; i < g_ui32DebugOrderTableReqCount; i++)
	{
		psDebugTable->asEntry[i].ui32RequesterID = g_aui32DebugOrderTable[i];
		dllist_init(&psDebugTable->asEntry[i].sListHead);
	}

	*ppsDebugTable = psDebugTable;

	return PVRSRV_OK;

ErrorFreeDebugTable:
	OSFreeMem(psDebugTable);

	return eError;
}

PVRSRV_ERROR
PVRSRVRegisterDeviceDbgTable(PVRSRV_DEVICE_NODE *psDevNode)
{
	return _RegisterDebugTableI((DEBUG_REQUEST_TABLE**)&psDevNode->hDebugTable);
}

PVRSRV_ERROR
PVRSRVRegisterDriverDbgTable(void)
{
	return _RegisterDebugTableI(&g_psDriverDebugTable);
}

static void _UnregisterDbgTableI(DEBUG_REQUEST_TABLE **ppsDebugTable)
{
	DEBUG_REQUEST_TABLE *psDebugTable;
	IMG_UINT32 i;

	PVR_ASSERT(*ppsDebugTable);
	psDebugTable = *ppsDebugTable;
	*ppsDebugTable = NULL;

	for (i = 0; i < g_ui32DebugOrderTableReqCount; i++)
	{
		if (!dllist_is_empty(&psDebugTable->asEntry[i].sListHead))
		{
			PVR_DPF((PVR_DBG_ERROR, "%s: Found registered callback(s) on %d",
					 __func__, i));
		}
	}

	OSWRLockDestroy(psDebugTable->hLock);
	psDebugTable->hLock = NULL;

	OSFreeMem(psDebugTable);
}

void
PVRSRVUnregisterDeviceDbgTable(PVRSRV_DEVICE_NODE *psDevNode)
{
	_UnregisterDbgTableI((DEBUG_REQUEST_TABLE**)&psDevNode->hDebugTable);
	PVR_ASSERT(!psDevNode->hDebugTable);
}

void
PVRSRVUnregisterDriverDbgTable(void)
{
	_UnregisterDbgTableI(&g_psDriverDebugTable);
	PVR_ASSERT(!g_psDriverDebugTable);
}

static PVRSRV_ERROR
_RegisterDbgRequestNotifyI(IMG_HANDLE *phNotify,
		                   DEBUG_REQUEST_TABLE *psDebugTable,
		                   PFN_DBGREQ_NOTIFY pfnDbgRequestNotify,
		                   IMG_UINT32 ui32RequesterID,
		                   PVRSRV_DBGREQ_HANDLE hDbgRequestHandle)
{
	DEBUG_REQUEST_NOTIFY *psNotify;
	PDLLIST_NODE psHead = NULL;
	IMG_UINT32 i;
	PVRSRV_ERROR eError;

	PVR_LOG_RETURN_IF_INVALID_PARAM(phNotify, "phNotify");
	PVR_LOG_RETURN_IF_INVALID_PARAM(psDebugTable, "psDebugTable");
	PVR_LOG_RETURN_IF_INVALID_PARAM(pfnDbgRequestNotify, "pfnDbRequestNotify");

	/* NoStats used since this may be called outside of the register/de-register
	 * process calls which track memory use. */
	psNotify = OSAllocMemNoStats(sizeof(*psNotify));
	PVR_LOG_RETURN_IF_NOMEM(psNotify, "psNotify");

	/* Set-up the notify data */
	psNotify->hDebugTable = psDebugTable;
	psNotify->hDbgRequestHandle = hDbgRequestHandle;
	psNotify->pfnDbgRequestNotify = pfnDbgRequestNotify;
	psNotify->ui32RequesterID = ui32RequesterID;

	/* Lock down all the lists */
	OSWRLockAcquireWrite(psDebugTable->hLock);

	/* Find which list to add it to */
	for (i = 0; i < g_ui32DebugOrderTableReqCount; i++)
	{
		if (psDebugTable->asEntry[i].ui32RequesterID == ui32RequesterID)
		{
			psHead = &psDebugTable->asEntry[i].sListHead;
		}
	}

	/* Failed to find debug requester */
	PVR_LOG_GOTO_IF_INVALID_PARAM(psHead, eError, ErrorReleaseLock);

	/* Add it to the list of Notify functions */
	dllist_add_to_tail(psHead, &psNotify->sListNode);

	/* Unlock the lists */
	OSWRLockReleaseWrite(psDebugTable->hLock);

	*phNotify = psNotify;

	return PVRSRV_OK;

ErrorReleaseLock:
	OSWRLockReleaseWrite(psDebugTable->hLock);
	OSFreeMem(psNotify);

	return eError;
}

PVRSRV_ERROR
PVRSRVRegisterDeviceDbgRequestNotify(IMG_HANDLE *phNotify,
	                                 PVRSRV_DEVICE_NODE *psDevNode,
	                                 PFN_DBGREQ_NOTIFY pfnDbgRequestNotify,
	                                 IMG_UINT32 ui32RequesterID,
	                                 PVRSRV_DBGREQ_HANDLE hDbgRequestHandle)
{
	PVR_LOG_RETURN_IF_INVALID_PARAM(psDevNode, "psDevNode");
	if (!psDevNode->hDebugTable)
	{
		PVR_DPF((PVR_DBG_ERROR, "%s: psDevNode->hDebugTable not yet initialised!",
				 __func__));
		return PVRSRV_ERROR_NOT_INITIALISED;
	}

	return _RegisterDbgRequestNotifyI(phNotify,
			                          (DEBUG_REQUEST_TABLE *)psDevNode->hDebugTable,
			                          pfnDbgRequestNotify,
			                          ui32RequesterID,
			                          hDbgRequestHandle);
}

PVRSRV_ERROR
PVRSRVRegisterDriverDbgRequestNotify(IMG_HANDLE *phNotify,
	                                 PFN_DBGREQ_NOTIFY pfnDbgRequestNotify,
	                                 IMG_UINT32 ui32RequesterID,
	                                 PVRSRV_DBGREQ_HANDLE hDbgRequestHandle)
{
	if (!g_psDriverDebugTable)
	{
		PVR_DPF((PVR_DBG_ERROR, "%s: g_psDriverDebugTable not yet initialised!",
				 __func__));
		return PVRSRV_ERROR_NOT_INITIALISED;
	}

	return _RegisterDbgRequestNotifyI(phNotify,
			                          g_psDriverDebugTable,
			                          pfnDbgRequestNotify,
			                          ui32RequesterID,
			                          hDbgRequestHandle);
}

PVRSRV_ERROR
SOPvrDbgRequestNotifyRegister(IMG_HANDLE *phNotify,
							  PVRSRV_DEVICE_NODE *psDevNode,
							  PFN_DBGREQ_NOTIFY pfnDbgRequestNotify,
							  IMG_UINT32 ui32RequesterID,
							  PVRSRV_DBGREQ_HANDLE hDbgRequestHandle)
{
	return PVRSRVRegisterDeviceDbgRequestNotify(phNotify,
			psDevNode,
			pfnDbgRequestNotify,
			ui32RequesterID,
			hDbgRequestHandle);
}

static PVRSRV_ERROR
_UnregisterDbgRequestNotify(IMG_HANDLE hNotify)
{
	DEBUG_REQUEST_NOTIFY *psNotify = (DEBUG_REQUEST_NOTIFY *) hNotify;
	DEBUG_REQUEST_TABLE *psDebugTable;

	PVR_LOG_RETURN_IF_INVALID_PARAM(psNotify, "psNotify");

	psDebugTable = (DEBUG_REQUEST_TABLE *) psNotify->hDebugTable;

	OSWRLockAcquireWrite(psDebugTable->hLock);
	dllist_remove_node(&psNotify->sListNode);
	OSWRLockReleaseWrite(psDebugTable->hLock);

	OSFreeMemNoStats(psNotify);

	return PVRSRV_OK;
}

PVRSRV_ERROR
PVRSRVUnregisterDeviceDbgRequestNotify(IMG_HANDLE hNotify)
{
	return _UnregisterDbgRequestNotify(hNotify);
}

PVRSRV_ERROR
PVRSRVUnregisterDriverDbgRequestNotify(IMG_HANDLE hNotify)
{
	return _UnregisterDbgRequestNotify(hNotify);
}

PVRSRV_ERROR
SOPvrDbgRequestNotifyUnregister(IMG_HANDLE hNotify)
{
	return _UnregisterDbgRequestNotify(hNotify);
}

void
PVRSRVDebugRequest(PVRSRV_DEVICE_NODE *psDevNode,
				   IMG_UINT32 ui32VerbLevel,
				   DUMPDEBUG_PRINTF_FUNC *pfnDumpDebugPrintf,
				   void *pvDumpDebugFile)
{
	PVRSRV_DATA *psPVRSRVData = PVRSRVGetPVRSRVData();
	DEBUG_REQUEST_TABLE *psDebugTable =
		(DEBUG_REQUEST_TABLE *) psDevNode->hDebugTable;
	DEBUG_REQUEST_TABLE *psDriverDebugTable =
		(DEBUG_REQUEST_TABLE *) g_psDriverDebugTable;
	static const IMG_CHAR *apszVerbosityTable[] = { "Low", "Medium", "High" };
	const IMG_CHAR *szVerbosityLevel;
	const IMG_CHAR *Bit32 = "32 Bit", *Bit64 = "64 Bit";
	IMG_UINT32 i;

	static_assert(ARRAY_SIZE(apszVerbosityTable) == DEBUG_REQUEST_VERBOSITY_MAX+1,
	              "Incorrect number of verbosity levels");

	PVR_ASSERT(psDebugTable);
	PVR_ASSERT(psDriverDebugTable);

	if (ui32VerbLevel < ARRAY_SIZE(apszVerbosityTable))
	{
		szVerbosityLevel = apszVerbosityTable[ui32VerbLevel];
	}
	else
	{
		szVerbosityLevel = "unknown";
		PVR_ASSERT(!"Invalid verbosity level received");
	}

	PVR_DUMPDEBUG_LOG("------------[ PVR DBG: START (%s) ]------------",
	                  szVerbosityLevel);

	OSDumpVersionInfo(pfnDumpDebugPrintf, pvDumpDebugFile);

	PVR_DUMPDEBUG_LOG("DDK info: %s (%s) %s",
	                  PVRVERSION_STRING, PVR_BUILD_TYPE, PVR_BUILD_DIR);

	PVR_DUMPDEBUG_LOG("Time now: %" IMG_UINT64_FMTSPEC "us",
	                  OSClockus64());

	switch (psPVRSRVData->eServicesState)
	{
		case PVRSRV_SERVICES_STATE_OK:
			PVR_DUMPDEBUG_LOG("Services State: OK");
			break;
		case PVRSRV_SERVICES_STATE_BAD:
			PVR_DUMPDEBUG_LOG("Services State: BAD");
			break;
		case PVRSRV_SERVICES_STATE_UNDEFINED:
			PVR_DUMPDEBUG_LOG("Services State: UNDEFINED");
			break;
		default:
			PVR_DUMPDEBUG_LOG("Services State: UNKNOWN (%d)",
			                  psPVRSRVData->eServicesState);
			break;
	}

	PVR_DUMPDEBUG_LOG("Server Errors: %d",
	          PVRSRV_KM_ERRORS);

	PVRSRVConnectionDebugNotify(psDevNode, pfnDumpDebugPrintf, pvDumpDebugFile);

	PVR_DUMPDEBUG_LOG("------[ Driver Info ]------");

	PVR_DUMPDEBUG_LOG("Comparison of UM/KM components: %s",
	                 (psPVRSRVData->sDriverInfo.bIsNoMatch) ? "MISMATCH" : "MATCHING");

	PVR_DUMPDEBUG_LOG("KM Arch: %s",
	                  (psPVRSRVData->sDriverInfo.ui8KMBitArch & BUILD_ARCH_64BIT) ? Bit64 : Bit32);

	if (!PVRSRV_VZ_MODE_IS(NATIVE))
	{
		PVR_DUMPDEBUG_LOG("Driver Mode: %s",
		                  (PVRSRV_VZ_MODE_IS(HOST)) ? "Host":"Guest");
	}

	if (psPVRSRVData->sDriverInfo.ui8UMSupportedArch)
	{
		if ((psPVRSRVData->sDriverInfo.ui8UMSupportedArch & BUILD_ARCH_BOTH) ==
			BUILD_ARCH_BOTH)
		{
			PVR_DUMPDEBUG_LOG("UM Connected Clients Arch: %s and %s", Bit64, Bit32);

		}
		else
		{
			PVR_DUMPDEBUG_LOG("UM Connected Clients: %s",
			                 (psPVRSRVData->sDriverInfo.ui8UMSupportedArch & BUILD_ARCH_64BIT) ? Bit64 : Bit32);
		}
	}

	PVR_DUMP_DRIVER_INFO("UM", psPVRSRVData->sDriverInfo.sUMBuildInfo);
	PVR_DUMP_DRIVER_INFO("KM", psPVRSRVData->sDriverInfo.sKMBuildInfo);

	PVR_DUMPDEBUG_LOG("Window system: %s", (IS_DECLARED(WINDOW_SYSTEM)) ? (WINDOW_SYSTEM) : "Not declared");

	/* Driver debug table */
	OSWRLockAcquireReadNested(psDriverDebugTable->hLock, DN_LOCKCLASS_DRIVER);
	/* Device debug table*/
	OSWRLockAcquireReadNested(psDebugTable->hLock, DN_LOCKCLASS_DEVICE);

	/* For each requester in Driver and Device table */
	for (i = 0; i < g_ui32DebugOrderTableReqCount; i++)
	{
		DLLIST_NODE *psNode;
		DLLIST_NODE *psNext;

		/* For each notifier on this requestor */
		dllist_foreach_node(&psDriverDebugTable->asEntry[i].sListHead, psNode, psNext)
		{
			DEBUG_REQUEST_NOTIFY *psNotify =
				IMG_CONTAINER_OF(psNode, DEBUG_REQUEST_NOTIFY, sListNode);
			psNotify->pfnDbgRequestNotify(psNotify->hDbgRequestHandle, ui32VerbLevel,
				                          pfnDumpDebugPrintf, pvDumpDebugFile);
		}

		/* For each notifier on this requestor */
		dllist_foreach_node(&psDebugTable->asEntry[i].sListHead, psNode, psNext)
		{
			DEBUG_REQUEST_NOTIFY *psNotify =
				IMG_CONTAINER_OF(psNode, DEBUG_REQUEST_NOTIFY, sListNode);
			psNotify->pfnDbgRequestNotify(psNotify->hDbgRequestHandle, ui32VerbLevel,
							pfnDumpDebugPrintf, pvDumpDebugFile);
		}
	}

	OSWRLockReleaseRead(psDebugTable->hLock);
	OSWRLockReleaseRead(psDriverDebugTable->hLock);

	PVR_DUMPDEBUG_LOG("------------[ PVR DBG: END ]------------");

	if (!pfnDumpDebugPrintf)
	{
		/* Only notify OS of an issue if the debug dump has gone there */
		OSWarnOn(IMG_TRUE);
	}
}