1 files changed, 305 insertions, 0 deletions
diff --git a/drivers/staging/cdv/pvr/services4/srvkm/common/perproc.c b/drivers/staging/cdv/pvr/services4/srvkm/common/perproc.c
new file mode 100644
index 000000000000..eb73166bb32c
--- /dev/null
+++ b/drivers/staging/cdv/pvr/services4/srvkm/common/perproc.c
@@ -0,0 +1,305 @@
+/**********************************************************************
+ *
+ * Copyright (C) Imagination Technologies Ltd. All rights reserved.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ * 
+ * This program is distributed in the hope it will be useful but, except 
+ * as otherwise stated in writing, without any warranty; without even the 
+ * implied warranty of merchantability or fitness for a particular purpose. 
+ * See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Contact Information:
+ * Imagination Technologies Ltd. <gpl-support@imgtec.com>
+ * Home Park Estate, Kings Langley, Herts, WD4 8LZ, UK 
+ *
+ ******************************************************************************/
+
+#include "services_headers.h"
+#include "resman.h"
+#include "handle.h"
+#include "perproc.h"
+#include "osperproc.h"
+#if defined(TTRACE)
+#include "ttrace.h"
+#endif
+
+#define	HASH_TAB_INIT_SIZE 32
+
+static HASH_TABLE *psHashTab = IMG_NULL;
+
+static PVRSRV_ERROR FreePerProcessData(PVRSRV_PER_PROCESS_DATA *psPerProc)
+{
+	PVRSRV_ERROR eError;
+	IMG_UINTPTR_T uiPerProc;
+
+	PVR_ASSERT(psPerProc != IMG_NULL);
+
+	if (psPerProc == IMG_NULL)
+	{
+		PVR_DPF((PVR_DBG_ERROR, "FreePerProcessData: invalid parameter"));
+		return PVRSRV_ERROR_INVALID_PARAMS;
+	}
+
+	uiPerProc = HASH_Remove(psHashTab, (IMG_UINTPTR_T)psPerProc->ui32PID);
+	if (uiPerProc == 0)
+	{
+		PVR_DPF((PVR_DBG_ERROR, "FreePerProcessData: Couldn't find process in per-process data hash table"));
+		
+		PVR_ASSERT(psPerProc->ui32PID == 0);
+	}
+	else
+	{
+		PVR_ASSERT((PVRSRV_PER_PROCESS_DATA *)uiPerProc == psPerProc);
+		PVR_ASSERT(((PVRSRV_PER_PROCESS_DATA *)uiPerProc)->ui32PID == psPerProc->ui32PID);
+	}
+
+	
+	if (psPerProc->psHandleBase != IMG_NULL)
+	{
+		eError = PVRSRVFreeHandleBase(psPerProc->psHandleBase);
+		if (eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR, "FreePerProcessData: Couldn't free handle base for process (%d)", eError));
+			return eError;
+		}
+	}
+
+	
+	if (psPerProc->hPerProcData != IMG_NULL)
+	{
+		eError = PVRSRVReleaseHandle(KERNEL_HANDLE_BASE, psPerProc->hPerProcData, PVRSRV_HANDLE_TYPE_PERPROC_DATA);
+
+		if (eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR, "FreePerProcessData: Couldn't release per-process data handle (%d)", eError));
+			return eError;
+		}
+	}
+
+	
+	eError = OSPerProcessPrivateDataDeInit(psPerProc->hOsPrivateData);
+	if (eError != PVRSRV_OK)
+	{
+		 PVR_DPF((PVR_DBG_ERROR, "FreePerProcessData: OSPerProcessPrivateDataDeInit failed (%d)", eError));
+		return eError;
+	}
+
+	eError = OSFreeMem(PVRSRV_OS_NON_PAGEABLE_HEAP,
+		sizeof(*psPerProc),
+		psPerProc,
+		psPerProc->hBlockAlloc);
+	
+	if (eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR, "FreePerProcessData: Couldn't free per-process data (%d)", eError));
+		return eError;
+	}
+
+	return PVRSRV_OK;
+}
+
+
+PVRSRV_PER_PROCESS_DATA *PVRSRVPerProcessData(IMG_UINT32 ui32PID)
+{
+	PVRSRV_PER_PROCESS_DATA *psPerProc;
+
+	PVR_ASSERT(psHashTab != IMG_NULL);
+
+	
+	psPerProc = (PVRSRV_PER_PROCESS_DATA *)HASH_Retrieve(psHashTab, (IMG_UINTPTR_T)ui32PID);
+	return psPerProc;
+}
+
+
+PVRSRV_ERROR PVRSRVPerProcessDataConnect(IMG_UINT32	ui32PID, IMG_UINT32 ui32Flags)
+{
+	PVRSRV_PER_PROCESS_DATA *psPerProc;
+	IMG_HANDLE hBlockAlloc;
+	PVRSRV_ERROR eError = PVRSRV_OK;
+
+	if (psHashTab == IMG_NULL)
+	{
+		return PVRSRV_ERROR_INIT_FAILURE;
+	}
+
+	
+	psPerProc = (PVRSRV_PER_PROCESS_DATA *)HASH_Retrieve(psHashTab, (IMG_UINTPTR_T)ui32PID);
+
+	if (psPerProc == IMG_NULL)
+	{
+		
+		eError = OSAllocMem(PVRSRV_OS_NON_PAGEABLE_HEAP,
+							sizeof(*psPerProc),
+							(IMG_PVOID *)&psPerProc,
+							&hBlockAlloc,
+							"Per Process Data");
+		if (eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataConnect: Couldn't allocate per-process data (%d)", eError));
+			return eError;
+		}
+		OSMemSet(psPerProc, 0, sizeof(*psPerProc));
+		psPerProc->hBlockAlloc = hBlockAlloc;
+
+		if (!HASH_Insert(psHashTab, (IMG_UINTPTR_T)ui32PID, (IMG_UINTPTR_T)psPerProc))
+		{
+			PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataConnect: Couldn't insert per-process data into hash table"));
+			eError = PVRSRV_ERROR_INSERT_HASH_TABLE_DATA_FAILED;
+			goto failure;
+		}
+
+		psPerProc->ui32PID = ui32PID;
+		psPerProc->ui32RefCount = 0;
+
+#if defined(SUPPORT_PDUMP_MULTI_PROCESS)
+		if (ui32Flags == SRV_FLAGS_PDUMP_ACTIVE)
+		{
+			psPerProc->bPDumpActive = IMG_TRUE;
+		}
+#else
+		PVR_UNREFERENCED_PARAMETER(ui32Flags);
+#endif
+
+		
+		eError = OSPerProcessPrivateDataInit(&psPerProc->hOsPrivateData);
+		if (eError != PVRSRV_OK)
+		{
+			 PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataConnect: OSPerProcessPrivateDataInit failed (%d)", eError));
+			goto failure;
+		}
+
+		
+		eError = PVRSRVAllocHandle(KERNEL_HANDLE_BASE,
+								   &psPerProc->hPerProcData,
+								   psPerProc,
+								   PVRSRV_HANDLE_TYPE_PERPROC_DATA,
+								   PVRSRV_HANDLE_ALLOC_FLAG_NONE);
+		if (eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataConnect: Couldn't allocate handle for per-process data (%d)", eError));
+			goto failure;
+		}
+
+		
+		eError = PVRSRVAllocHandleBase(&psPerProc->psHandleBase);
+		if (eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataConnect: Couldn't allocate handle base for process (%d)", eError));
+			goto failure;
+		}
+
+		
+		eError = OSPerProcessSetHandleOptions(psPerProc->psHandleBase);
+		if (eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataConnect: Couldn't set handle options (%d)", eError));
+			goto failure;
+		}
+		
+		
+		eError = PVRSRVResManConnect(psPerProc, &psPerProc->hResManContext);
+		if (eError != PVRSRV_OK)
+		{
+			PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataConnect: Couldn't register with the resource manager"));
+			goto failure;
+		}
+#if defined (TTRACE)
+		PVRSRVTimeTraceBufferCreate(ui32PID);
+#endif
+	}
+	
+	psPerProc->ui32RefCount++;
+	PVR_DPF((PVR_DBG_MESSAGE,
+			"PVRSRVPerProcessDataConnect: Process 0x%x has ref-count %d",
+			ui32PID, psPerProc->ui32RefCount));
+
+	return eError;
+
+failure:
+	(IMG_VOID)FreePerProcessData(psPerProc);
+	return eError;
+}
+
+
+IMG_VOID PVRSRVPerProcessDataDisconnect(IMG_UINT32	ui32PID)
+{
+	PVRSRV_ERROR eError;
+	PVRSRV_PER_PROCESS_DATA *psPerProc;
+
+	PVR_ASSERT(psHashTab != IMG_NULL);
+
+	psPerProc = (PVRSRV_PER_PROCESS_DATA *)HASH_Retrieve(psHashTab, (IMG_UINTPTR_T)ui32PID);
+	if (psPerProc == IMG_NULL)
+	{
+		PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataDealloc: Couldn't locate per-process data for PID %u", ui32PID));
+	}
+	else
+	{
+		psPerProc->ui32RefCount--;
+		if (psPerProc->ui32RefCount == 0)
+		{
+			PVR_DPF((PVR_DBG_MESSAGE, "PVRSRVPerProcessDataDisconnect: "
+					"Last close from process 0x%x received", ui32PID));
+
+#if defined (TTRACE)
+			PVRSRVTimeTraceBufferDestroy(ui32PID);
+#endif
+
+			
+			PVRSRVResManDisconnect(psPerProc->hResManContext, IMG_FALSE);
+			
+			
+			eError = FreePerProcessData(psPerProc);
+			if (eError != PVRSRV_OK)
+			{
+				PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataDisconnect: Error freeing per-process data"));
+			}
+		}
+	}
+
+	eError = PVRSRVPurgeHandles(KERNEL_HANDLE_BASE);
+	if (eError != PVRSRV_OK)
+	{
+		PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataDisconnect: Purge of global handle pool failed (%d)", eError));
+	}
+}
+
+
+PVRSRV_ERROR PVRSRVPerProcessDataInit(IMG_VOID)
+{
+	PVR_ASSERT(psHashTab == IMG_NULL);
+
+	
+	psHashTab = HASH_Create(HASH_TAB_INIT_SIZE);
+	if (psHashTab == IMG_NULL)
+	{
+		PVR_DPF((PVR_DBG_ERROR, "PVRSRVPerProcessDataInit: Couldn't create per-process data hash table"));
+		return PVRSRV_ERROR_UNABLE_TO_CREATE_HASH_TABLE;
+	}
+
+	return PVRSRV_OK;
+}
+
+PVRSRV_ERROR PVRSRVPerProcessDataDeInit(IMG_VOID)
+{
+	
+	if (psHashTab != IMG_NULL)
+	{
+		
+		HASH_Delete(psHashTab);
+		psHashTab = IMG_NULL;
+	}
+
+	return PVRSRV_OK;
+}
+