1 files changed, 283 insertions, 0 deletions

diff --git a/drivers/gpu/pvr/perproc.c b/drivers/gpu/pvr/perproc.c
new file mode 100644
index 00000000000..62f4a3f1144
--- /dev/null
+++ b/drivers/gpu/pvr/perproc.c
@@ -0,0 +1,283 @@
+/**********************************************************************
+ *
+ * Copyright(c) 2008 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"
+
+#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)
+{
+        PVRSRV_PER_PROCESS_DATA *psPerProc;
+        IMG_HANDLE hBlockAlloc;
+        PVRSRV_ERROR eError = PVRSRV_OK;
+
+        PVR_ASSERT(psHashTab != IMG_NULL);
+
+        
+        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;
+
+                
+                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;
+                }
+        }
+        
+        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));
+
+                        
+                        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;
+}
+