OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   ! J5 g% y$ K; t
3. * edma_test.c
   / g, x+ |- F" i  y4 D8 X
4. *
   6 T) Q/ \8 K0 R2 Q3 H7 U
5. * brief  EDMA3 Test Application
   ( X8 c: @; }# @7 N
6. *
   + n) a+ t2 U8 b7 k
7. *   This file contains EDMA3 Test code.
   1 B8 o! x0 `+ i4 c! S
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    1 q/ n: V6 H4 G, O5 o
12. *
    7 N1 r% i6 H; Z
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    2 Y: |: @  q1 O& H1 C+ j
14. *
    ; d* f: c* p* I3 t
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ' \" R" A8 c4 c/ r1 U9 L) z$ ^% A. }1 g
22. * GNU General Public License for more details.
    
23. */
    ; z5 Y6 M7 B* P3 C9 N7 W! X, _) O
24. 
    
25. #include <linux/module.h>
    " S# Y1 S9 f8 ^5 t5 j$ N6 I. \
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    7 g1 f5 M# u. w# B
29. #include <linux/interrupt.h>
    8 V0 q* t# r( C
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    ! O# ]/ N- F# }& f5 n5 M
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    ' I: n0 _, r, B: i7 s
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    8 O- S1 b4 ~: U
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    6 f( C2 S0 a9 r
40. 
    ! Z4 Z! l1 {' t8 p9 r; r
41. #undef EDMA3_DEBUG
    7 a  P" w6 W0 }# f& n; {) p" A
42. /*#define EDMA3_DEBUG*/
    
43. 
    % Y, {8 J$ ~5 o# T5 J1 g$ N
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    " ^: d+ g8 Y. V9 T0 c" d
48. #else
    2 I; I6 U6 H3 b" h$ G" v
49. #define DMA_PRINTK( x... )
    ( Z& U8 V0 J) W% K. K; f: N
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ! }  k; |- Y: _! ]+ Q2 G
52. #endif
    4 `1 h( b! m" S* S2 J% ?
53. 
    ) N; T2 L5 o: s  j- \
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    0 g2 A4 T2 {+ J( l, m- d3 O4 X
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    8 q+ w# |# L3 A* l6 _  ?2 l: B
59. #define ITCCHEN_SHIFT               23
    ' J$ T. [' |. Y5 G! m
60. 
    2 @* R' K% g' t9 u
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    7 X$ a2 x! M% |- O) d& Y1 a
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , P3 d; [/ ?: s8 N; }; J" ^$ a
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    . K2 m! V5 V3 Q# K; ~% _
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    - R3 z  C2 q9 z! }& k6 E, p
67. 
    9 b( d4 V4 ~8 X  v
68. dma_addr_t dmaphyssrc1 = 0;
    7 ^* N: F9 ?) m) r5 r8 @
69. dma_addr_t dmaphyssrc2 = 0;
    ' D% p9 ^* f  V+ z3 i
70. dma_addr_t dmaphysdest1 = 0;
    1 t- d6 n% w; o% o
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    2 s: R5 S) U6 |" T
75. char *dmabufdest1 = NULL;
    " G! s8 ^# V3 ^
76. char *dmabufdest2 = NULL;
    
77. 
    . C  G2 A0 U7 h! H% z, Z
78. static int acnt = 512;
    1 _! R  [2 }8 a' C0 }0 D
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

  L2 \1 j2 P* T% C      这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
' h0 \0 J: t/ C) G' H) M