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Diffstat (limited to 'pvr-source/services4/srvkm/env/linux/mmap.h')
| -rwxr-xr-x | pvr-source/services4/srvkm/env/linux/mmap.h | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/pvr-source/services4/srvkm/env/linux/mmap.h b/pvr-source/services4/srvkm/env/linux/mmap.h deleted file mode 100755 index 7140c13..0000000 --- a/pvr-source/services4/srvkm/env/linux/mmap.h +++ /dev/null @@ -1,240 +0,0 @@ -/*************************************************************************/ /*! -@Title Linux mmap interface declaration -@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. -*/ /**************************************************************************/ - -#if !defined(__MMAP_H__) -#define __MMAP_H__ - -#include <linux/mm.h> -#include <linux/list.h> - -#if defined(VM_MIXEDMAP) -/* - * Mixed maps allow us to avoid using raw PFN mappings (VM_PFNMAP) for - * pages without pages structures ("struct page"), giving us more - * freedom in choosing the mmap offset for mappings. Mixed maps also - * allow both the mmap and the wrap code to be simplified somewhat. - */ -#define PVR_MAKE_ALL_PFNS_SPECIAL -#endif - -#include "perproc.h" -#include "mm.h" - -/* - * This structure represents the relationship between an mmap2 file - * offset and a LinuxMemArea for a given process. - */ -typedef struct KV_OFFSET_STRUCT_TAG -{ - /* - * Mapping count. Incremented when the mapping is created, and - * if the mapping is inherited across a process fork. - */ - IMG_UINT32 ui32Mapped; - - /* - * Offset to be passed to mmap2 to map the associated memory area - * into user space. The offset may represent the page frame number - * of the first page in the area (if the area is physically - * contiguous), or it may represent the secure handle associated - * with the area. - */ - IMG_UINT32 ui32MMapOffset; - - IMG_UINT32 ui32RealByteSize; - - /* Memory area associated with this offset structure */ - LinuxMemArea *psLinuxMemArea; - -#if !defined(PVR_MAKE_ALL_PFNS_SPECIAL) - /* ID of the thread that owns this structure */ - IMG_UINT32 ui32TID; -#endif - - /* ID of the process that owns this structure */ - IMG_UINT32 ui32PID; - - /* - * For offsets that represent actual page frame numbers, this structure - * is temporarily put on a list so that it can be found from the - * driver mmap entry point. This flag indicates the structure is - * on the list. - */ - IMG_BOOL bOnMMapList; - - /* Reference count for this structure */ - IMG_UINT32 ui32RefCount; - - /* - * User mode address of start of mapping. This is not necessarily the - * first user mode address of the memory area. - */ - IMG_UINT32 ui32UserVAddr; - - /* Extra entries to support proc filesystem debug info */ -#if defined(DEBUG_LINUX_MMAP_AREAS) - const IMG_CHAR *pszName; -#endif - - /* List entry field for MMap list */ - struct list_head sMMapItem; - - /* List entry field for per-memory area list */ - struct list_head sAreaItem; -}KV_OFFSET_STRUCT, *PKV_OFFSET_STRUCT; - - - -/*! - ******************************************************************************* - * @Function Mmap initialisation code - ******************************************************************************/ -IMG_VOID PVRMMapInit(IMG_VOID); - - -/*! - ******************************************************************************* - * @Function Mmap de-initialisation code - ******************************************************************************/ -IMG_VOID PVRMMapCleanup(IMG_VOID); - - -/*! - ******************************************************************************* - * @Function Registers a memory area with the mmap code - * - * @Input psLinuxMemArea - * - * @Return PVRSRV_ERROR status - ******************************************************************************/ -PVRSRV_ERROR PVRMMapRegisterArea(LinuxMemArea *psLinuxMemArea); - - -/*! - ******************************************************************************* - * @Function Unregisters a memory area from the mmap code - * - * @Input psLinuxMemArea - * - * @Return PVRSRV_ERROR status - ******************************************************************************/ -PVRSRV_ERROR PVRMMapRemoveRegisteredArea(LinuxMemArea *psLinuxMemArea); - - -/*! - ****************************************************************************** - * @Function When a userspace services client, requests to map a memory - * area to userspace, this function validates the request and - * returns the details that the client must use when calling mmap(2). - * - * @Input psPerProc Per process data. - * @Input hMHandle Handle associated with the memory to map. - * This is a (secure) handle to the OS specific - * memory handle structure (hOSMemHandle), or - * a handle to a structure that contains the - * memory handle. - * @Output pui32MMapOffset The page aligned offset that the client must - * pass to the mmap2 system call. - * @Output pui32ByteOffset The real mapping that will be created for the - * services client may have a different - * size/alignment from it request. This offset - * is returned to the client and should be added - * to virtual address returned from mmap2 to get - * the first address corresponding to its request. - * @Output pui32RealByteOffset The size that the mapping will really be, - * that the client must also pass to mmap/munmap. - * - * @Output pui32UserVAddr Pointer to returned user mode address of - * mapping. - * @Return PVRSRV_ERROR - ******************************************************************************/ -PVRSRV_ERROR PVRMMapOSMemHandleToMMapData(PVRSRV_PER_PROCESS_DATA *psPerProc, -#if defined (SUPPORT_SID_INTERFACE) - IMG_SID hMHandle, -#else - IMG_HANDLE hMHandle, -#endif - IMG_UINT32 *pui32MMapOffset, - IMG_UINT32 *pui32ByteOffset, - IMG_UINT32 *pui32RealByteSize, - IMG_UINT32 *pui32UserVAddr); - -/*! - ******************************************************************************* - - @Function Release mmap data. - - @Input psPerProc Per-process data. - @Input hMHandle Memory handle. - - @Output pbMUnmap Flag that indicates whether an munmap is - required. - @Output pui32RealByteSize Location for size of mapping. - @Output pui32UserVAddr User mode address to munmap. - - @Return PVRSRV_ERROR - ******************************************************************************/ -PVRSRV_ERROR -PVRMMapReleaseMMapData(PVRSRV_PER_PROCESS_DATA *psPerProc, -#if defined (SUPPORT_SID_INTERFACE) - IMG_SID hMHandle, -#else - IMG_HANDLE hMHandle, -#endif - IMG_BOOL *pbMUnmap, - IMG_UINT32 *pui32RealByteSize, - IMG_UINT32 *pui32UserVAddr); - -/*! - ******************************************************************************* - * @Function driver mmap entry point - * - * @Input pFile : user file structure - * - * @Input ps_vma : vm area structure - * - * @Return 0 for success, -errno for failure. - ******************************************************************************/ -int PVRMMap(struct file* pFile, struct vm_area_struct* ps_vma); - - -#endif /* __MMAP_H__ */ - |