OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   . B9 Q9 R  d- c
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   , o4 A3 O/ e' A- ^
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ! I7 v! J  o, y# {! ^
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    9 x* \( R- U& E( N. H
11. *         TO CHANGE.
    * a5 `  `) P, S9 j5 u& W6 W
12. *
    - s+ g' W3 e! b% P6 q
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    , N) Z% x* @$ Y( c& @# h; a
16. * modify it under the terms of the GNU General Public License as
    6 v4 u8 ^, D; Z& V- p. U
17. * published by the Free Software Foundation version 2.
    . b+ c' \, x+ j
18. *
    ) U* z6 l& e9 d% _3 u0 @. K, s" T
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    " w6 ]# L, t: r0 M0 Q
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.
    / g' C, X/ }4 B. o+ j; w
23. */
    " y7 g- w1 b" _% v1 L
24. 
    " K' s% y2 m* A" w# ?& a
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    3 E( ~4 ^* g" {: [: e) @( n5 c3 {
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    0 T6 T% G$ a( T* ]
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    1 e* m& p% a; |  V+ i. Q! Y
32. #include <linux/sysctl.h>
    7 @" Q7 p6 R5 b) |# A& `
33. #include <linux/mm.h>
      X1 u" @7 _7 z8 s) q
34. #include <linux/dma-mapping.h>
    , S, C, c% ?' C. j2 k
35. 
    : f- j2 A, s( z) w1 r7 g
36. #include <mach/memory.h>
    : ^+ A$ c* G7 t3 c" d/ f
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    1 K& x1 w! \! M9 Y* m6 v$ e
40. 
    . X, }$ A9 q+ h, |
41. #undef EDMA3_DEBUG
    6 |+ v9 m; F& m3 p5 z$ }7 D
42. /*#define EDMA3_DEBUG*/
    
43. 
    - G0 `8 P3 T" W9 }4 v9 \, c
44. #ifdef EDMA3_DEBUG
    ( e; u! T& d8 h7 ~5 q) y: f
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    % v& g4 b! @! b/ d2 f( `7 N0 X
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    5 Y# a! i: P6 N9 f
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    , U  V0 [" O* Z: B! o, O6 q
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    6 t+ d" Z9 j$ a1 L
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    # B2 T3 e/ a: G* q, g% H
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    % K7 W: J: c, ~3 s7 N# D
60. 
    - J9 y% Q1 M! @0 H7 w
61. static volatile int irqraised1 = 0;
    ' ^! t' _0 C/ v. s9 u! r& X
62. static volatile int irqraised2 = 0;
    ( r, ^+ i- {$ t( P- {$ L
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. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    5 `# b2 ^" x' r- S5 R1 E
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    9 |# c7 m" q9 I1 u  D! M: n# h
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    1 F% i; I0 k) ?8 l; p; l9 I/ [
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    ! r9 v& n; N7 U) @8 q1 Q5 e
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    - |# ^! o5 v; t4 f; D3 f( `1 |2 _
81. 
    
82. module_param(acnt, int, S_IRUGO);
    : [* m( L. n1 A9 e
83. module_param(bcnt, int, S_IRUGO);
    ! f, R6 N6 N4 i* ]: N
84. module_param(ccnt, int, S_IRUGO);

复制代码

+ C! S- c1 b* z1 P" W
4 `5 ]4 n. P0 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
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。

" e2 u2 t9 B2 ]" T) s) g; u0 V  g