Maemo patchset 20101501+0m5

[h-e-n] / drivers / gpu / pvr / mem.c

diff --git a/drivers/gpu/pvr/mem.c b/drivers/gpu/pvr/mem.c
new file mode 100644 (file)
index 0000000..9955871
--- /dev/null
+++ b/drivers/gpu/pvr/mem.c
@@ -0,0 +1,117 @@
+/**********************************************************************
+ *
+ * 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 "sgxapi_km.h"
+#include "pvr_bridge_km.h"
+
+static enum PVRSRV_ERROR FreeSharedSysMemCallBack(void *pvParam, u32 ui32Param)
+{
+       struct PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo = pvParam;
+
+       PVR_UNREFERENCED_PARAMETER(ui32Param);
+
+       OSFreePages(psKernelMemInfo->ui32Flags,
+                   psKernelMemInfo->ui32AllocSize,
+                   psKernelMemInfo->pvLinAddrKM,
+                   psKernelMemInfo->sMemBlk.hOSMemHandle);
+
+       OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP,
+                 sizeof(struct PVRSRV_KERNEL_MEM_INFO), psKernelMemInfo, NULL);
+
+       return PVRSRV_OK;
+}
+
+enum PVRSRV_ERROR PVRSRVAllocSharedSysMemoryKM(
+                       struct PVRSRV_PER_PROCESS_DATA *psPerProc,
+                       u32 ui32Flags, u32 ui32Size,
+                       struct PVRSRV_KERNEL_MEM_INFO **ppsKernelMemInfo)
+{
+       struct PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo;
+
+       if (OSAllocMem(PVRSRV_OS_PAGEABLE_HEAP,
+                      sizeof(struct PVRSRV_KERNEL_MEM_INFO),
+                      (void **) &psKernelMemInfo, NULL) != PVRSRV_OK) {
+               PVR_DPF(PVR_DBG_ERROR, "PVRSRVAllocSharedSysMemoryKM: "
+                        "Failed to alloc memory for meminfo");
+               return PVRSRV_ERROR_OUT_OF_MEMORY;
+       }
+
+       ui32Flags &= ~PVRSRV_HAP_MAPTYPE_MASK;
+       ui32Flags |= PVRSRV_HAP_MULTI_PROCESS;
+       psKernelMemInfo->ui32Flags = ui32Flags;
+       psKernelMemInfo->ui32AllocSize = ui32Size;
+
+       if (OSAllocPages(psKernelMemInfo->ui32Flags,
+                        psKernelMemInfo->ui32AllocSize,
+                        &psKernelMemInfo->pvLinAddrKM,
+                        &psKernelMemInfo->sMemBlk.hOSMemHandle) != PVRSRV_OK) {
+               PVR_DPF(PVR_DBG_ERROR, "PVRSRVAllocSharedSysMemoryKM: "
+                        "Failed to alloc memory for block");
+               OSFreeMem(PVRSRV_OS_PAGEABLE_HEAP,
+                         sizeof(struct PVRSRV_KERNEL_MEM_INFO),
+                         psKernelMemInfo, NULL);
+               return PVRSRV_ERROR_OUT_OF_MEMORY;
+       }
+
+       psKernelMemInfo->sMemBlk.hResItem = ResManRegisterRes(
+                                       psPerProc->hResManContext,
+                                       RESMAN_TYPE_SHARED_MEM_INFO,
+                                       psKernelMemInfo, 0,
+                                       FreeSharedSysMemCallBack);
+
+       *ppsKernelMemInfo = psKernelMemInfo;
+
+       return PVRSRV_OK;
+}
+
+enum PVRSRV_ERROR PVRSRVFreeSharedSysMemoryKM(
+                       struct PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo)
+{
+       enum PVRSRV_ERROR eError = PVRSRV_OK;
+
+       if (psKernelMemInfo->sMemBlk.hResItem)
+               ResManFreeResByPtr(psKernelMemInfo->sMemBlk.hResItem);
+       else
+               eError = FreeSharedSysMemCallBack(psKernelMemInfo, 0);
+
+       return eError;
+}
+
+enum PVRSRV_ERROR PVRSRVDissociateMemFromResmanKM(
+                               struct PVRSRV_KERNEL_MEM_INFO *psKernelMemInfo)
+{
+       if (!psKernelMemInfo)
+               return PVRSRV_ERROR_INVALID_PARAMS;
+
+       if (psKernelMemInfo->sMemBlk.hResItem) {
+               ResManDissociateRes(psKernelMemInfo->sMemBlk.hResItem,
+                                   NULL);
+               psKernelMemInfo->sMemBlk.hResItem = NULL;
+       }
+
+       return PVRSRV_OK;
+}