ecf5e527ca
Add the driver for PowerVR Rogue graphics hardware. Signed-off-by: Han Gao <gaohan@iscas.ac.cn>
118 lines
5.2 KiB
C
118 lines
5.2 KiB
C
/*************************************************************************/ /*!
|
|
@File dma_support.h
|
|
@Title Device contiguous memory allocator and I/O re-mapper
|
|
@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
|
|
@Description This header provides a contiguous memory allocator API; mainly
|
|
used for allocating / ioremapping (DMA/PA <-> CPU/VA)
|
|
@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.
|
|
*/ /**************************************************************************/
|
|
|
|
#ifndef DMA_SUPPORT_H
|
|
#define DMA_SUPPORT_H
|
|
|
|
#include "osfunc.h"
|
|
#include "pvrsrv.h"
|
|
|
|
typedef struct _DMA_ALLOC_
|
|
{
|
|
IMG_UINT64 ui64Size;
|
|
IMG_CPU_VIRTADDR pvVirtAddr;
|
|
IMG_DEV_PHYADDR sBusAddr;
|
|
IMG_HANDLE hHandle;
|
|
#if defined(__linux__)
|
|
struct page *psPage;
|
|
pgprot_t PageProps;
|
|
#endif
|
|
void *pvOSDevice;
|
|
} DMA_ALLOC;
|
|
|
|
/*!
|
|
*******************************************************************************
|
|
@Function SysDmaAllocMem
|
|
@Description Allocates physically contiguous memory
|
|
@Return PVRSRV_OK on success. Otherwise, a PVRSRV error code
|
|
******************************************************************************/
|
|
PVRSRV_ERROR SysDmaAllocMem(DMA_ALLOC *psDmaAlloc);
|
|
|
|
/*!
|
|
*******************************************************************************
|
|
@Function SysDmaFreeMem
|
|
@Description Free physically contiguous memory
|
|
@Return void
|
|
******************************************************************************/
|
|
void SysDmaFreeMem(DMA_ALLOC *psCmaAlloc);
|
|
|
|
/*!
|
|
*******************************************************************************
|
|
@Function SysDmaRegisterForIoRemapping
|
|
@Description Registers DMA_ALLOC for manual I/O remapping
|
|
@Return PVRSRV_OK on success. Otherwise, a PVRSRV error code
|
|
******************************************************************************/
|
|
PVRSRV_ERROR SysDmaRegisterForIoRemapping(DMA_ALLOC *psPhysHeapDmaAlloc);
|
|
|
|
/*!
|
|
*******************************************************************************
|
|
@Function SysDmaDeregisterForIoRemapping
|
|
@Description Deregisters DMA_ALLOC from manual I/O remapping
|
|
@Return void
|
|
******************************************************************************/
|
|
void SysDmaDeregisterForIoRemapping(DMA_ALLOC *psPhysHeapDmaAlloc);
|
|
|
|
/*!
|
|
*******************************************************************************
|
|
@Function SysDmaDevPAddrToCpuVAddr
|
|
@Description Maps a DMA_ALLOC physical address to CPU virtual address
|
|
@Return IMG_CPU_VIRTADDR on success. Otherwise, a NULL
|
|
******************************************************************************/
|
|
IMG_CPU_VIRTADDR
|
|
SysDmaDevPAddrToCpuVAddr(IMG_UINT64 uiAddr, IMG_UINT64 ui64Size);
|
|
|
|
/*!
|
|
*******************************************************************************
|
|
@Function SysDmaCpuVAddrToDevPAddr
|
|
@Description Maps a DMA_ALLOC CPU virtual address to physical address
|
|
@Return Non-zero value on success. Otherwise, a 0
|
|
******************************************************************************/
|
|
IMG_UINT64 SysDmaCpuVAddrToDevPAddr(IMG_CPU_VIRTADDR pvDMAVirtAddr);
|
|
|
|
#endif /* DMA_SUPPORT_H */
|
|
|
|
/******************************************************************************
|
|
End of file (dma_support.h)
|
|
******************************************************************************/
|