OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ' O3 T7 o, {9 N
2. /*
   
3. * edma_test.c
   
4. *
   5 D5 C# \  q# ?$ g7 ~
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
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.
    , R- f/ l, }% e
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
      E2 \' ~, O4 z1 W6 |/ b0 U
15. * This program is free software; you can redistribute it and/or
    7 ~& a  D$ f' s" ?7 i" _
16. * modify it under the terms of the GNU General Public License as
    0 @# P8 x8 z) B# |8 r$ ~
17. * published by the Free Software Foundation version 2.
    # v! E) A/ p. ?2 H4 ?9 N4 K! X) i
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
    
22. * GNU General Public License for more details.
    0 E; _  B; @  S- P
23. */
    
24. 
    & |5 F3 a7 ]- \/ k
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    ; @. X! V( H' P  Z6 g! I
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ! C# E4 x# r6 H. }+ T/ [
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    9 n+ g8 e4 D' R3 H( ?6 B
32. #include <linux/sysctl.h>
    6 J. V+ T; w* `# y5 {
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    2 J, m  ]5 M7 `. ?( G$ t" @
35. 
    5 l5 I* }9 ^3 z6 t3 N  K6 g
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    % ^' Y. s6 ]/ i) s- K
39. #include <asm/hardware/edma.h>
    + @: h: {  L. y" f
40. 
    . K! k3 R5 L1 A$ h, A& d( B& \. s
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    , L' P5 g" r/ |" E. V9 z9 K
43. 
    
44. #ifdef EDMA3_DEBUG
    1 y' D- C8 a- ~7 i
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ' f) B8 d0 E: V. O1 ]
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    3 Q# l; a/ d1 e& U3 w4 s
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    $ ]! i% _) k- m. W* @0 G  c
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ' s/ ^* m% H; O1 U7 W' \9 H: g9 M6 N
52. #endif
    
53. 
    $ U- j' l' r; T
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    / \( Z2 L6 O" x) i0 I7 k% Y
57. #define ITCINTEN_SHIFT              21
    2 N7 @. q, I6 ^/ Y
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    1 E8 S6 c" y4 M9 P
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    $ H. N/ s. x' [+ \" y2 s: g. e! f) |
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ( H% s: }/ P+ q! G; s
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : t2 f, n, |# Q# Q! l% b! `
67. 
    . f) U1 i& I# Z, U& ?; i
68. dma_addr_t dmaphyssrc1 = 0;
    ! x* p3 E( O0 h+ Z$ B# P( `
69. dma_addr_t dmaphyssrc2 = 0;
    $ v0 }* z8 X  }& R7 Y- R5 @5 B3 l
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ! X- V0 ^6 L+ j' F6 _! k
72. 
    1 F0 ?  N: F! F
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    8 j3 s! z2 [* Y# C
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ; E5 t: ~" C9 i  i, W- k3 {  X& b
80. static int ccnt = 8;
    * Y8 U% F4 o+ _! @- _2 O% A
81. 
    - P* T6 B! I) H  p* Z
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    5 _! p) }9 k4 I
84. module_param(ccnt, int, S_IRUGO);

复制代码

6 R- V7 m7 C% l' ?# j
. s3 k9 T. r8 p6 i7 h      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。
4 I# @  p0 ?$ \* Q: C4 m

5 F! d9 d9 m# `- a$ i4 F& ]