OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   % X% C& f9 w- K9 n
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   , y( d- @7 Q! s8 X: ^
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
    3 \( Q! p, {# @& a! }! _8 l
11. *         TO CHANGE.
    5 N1 I) U- p. H
12. *
    % |7 h: O% H- {8 U2 U5 t) ~2 M8 p- r0 }
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    & b+ ^: M. b4 V0 \# o
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    2 y3 m5 K. R- g4 Y9 [
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ! P& [9 I0 E3 ?, _& r
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    8 r* U! Y+ G( v( m  M& m
22. * GNU General Public License for more details.
    
23. */
    : F2 m% X! c7 t
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    7 _/ H3 R- g: r
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    - F- Z7 `* T! A3 \6 u  _0 Q
30. #include <asm/io.h>
    1 j- [; e0 v( [! w; h; L) Q% r
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    : `3 T' O$ `5 _3 S0 h& t4 c
35. 
    # u  N4 p7 o6 o% l/ s
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    - m+ N' K0 `: r0 Y' L
39. #include <asm/hardware/edma.h>
    
40. 
    7 A0 k4 ^9 _+ t) ?/ f
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
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__)
    8 h4 Z' `8 J+ N6 B
48. #else
    5 m% O, g$ p( }' I' ~& F- ], q4 _' E
49. #define DMA_PRINTK( x... )
    7 R- g/ _; A$ b
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ! Z, y4 k  g+ j2 D9 j2 r4 ~
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    : s) N: u% B& g6 Y
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
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);
    
67. 
    2 u3 Y' K3 E9 ]& @. a* N
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    ! t3 B1 @5 Y( j6 }
70. dma_addr_t dmaphysdest1 = 0;
    7 L/ v3 g7 |0 v; K/ T$ w) c) W
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    * \6 V. K  d0 P. e7 z
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    2 V' W$ \6 P$ H( @1 `
77. 
    % ~# \+ ^* F+ R
78. static int acnt = 512;
    
79. static int bcnt = 8;
    6 R3 ]+ Z& u9 L, Q2 Y
80. static int ccnt = 8;
    2 z  p+ r  P+ i
81. 
    . o( ?! V* r* u; }3 N+ G6 f
82. module_param(acnt, int, S_IRUGO);
    , \7 {* h6 n( W# i# {4 y2 d4 G
83. module_param(bcnt, int, S_IRUGO);
      c  K( E! a. M% ^" I
84. module_param(ccnt, int, S_IRUGO);

复制代码

+ r$ V- |. a, B  j
      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
2 P0 T' U) a8 i9 \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。
1 w! B& n5 T* r6 l$ S- L; x     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

* B+ }+ B; C0 Z$ a