blob: cb38d4cc0734a73d72ce61ad3b46f003ca411adb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* dsp-mmu.h
*
* DSP-BIOS Bridge driver support functions for TI OMAP processors.
*
* DSP iommu.
*
* Copyright (C) 2005-2010 Texas Instruments, Inc.
*
* This package is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef _DSP_MMU_
#define _DSP_MMU_
#include <plat/iommu.h>
#include <plat/iovmm.h>
/**
* dsp_mmu_init() - initialize dsp_mmu module and returns a handle
*
* This function initialize dsp mmu module and returns a struct iommu
* handle to use it for dsp maps.
*
*/
struct iommu *dsp_mmu_init(void);
/**
* dsp_mmu_exit() - destroy dsp mmu module
* @mmu: Pointer to iommu handle.
*
* This function destroys dsp mmu module.
*
*/
void dsp_mmu_exit(struct iommu *mmu);
/**
* user_to_dsp_map() - maps user to dsp virtual address
* @mmu: Pointer to iommu handle.
* @uva: Virtual user space address.
* @da DSP address
* @size Buffer size to map.
* @usr_pgs struct page array pointer where the user pages will be stored
*
* This function maps a user space buffer into DSP virtual address.
*
*/
u32 user_to_dsp_map(struct iommu *mmu, u32 uva, u32 da, u32 size,
struct page **usr_pgs);
/**
* user_to_dsp_unmap() - unmaps DSP virtual buffer.
* @mmu: Pointer to iommu handle.
* @da DSP address
*
* This function unmaps a user space buffer into DSP virtual address.
*
*/
int user_to_dsp_unmap(struct iommu *mmu, u32 da);
#endif
|
