OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   8 h  ~3 p3 ?0 ]4 W7 b4 u
2. /*
   
3. * edma_test.c
   
4. *
   
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
   5 D/ r" u3 D7 K: O
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    ; h' v+ U( N& y6 R- }
11. *         TO CHANGE.
    
12. *
    6 s# [/ W' z8 P: E8 b
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
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
    7 _8 }/ j3 Y. \& r, f* C
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
    0 M+ F3 t; |, H+ u3 c5 Z  z
22. * GNU General Public License for more details.
    % X' h4 ~7 ]- d' B( Y( S4 G" \8 F3 O
23. */
    . |0 b5 v; e$ _/ V/ K
24. 
    . T, |* h( ^8 Z* e+ a; V
25. #include <linux/module.h>
    2 ]! s$ K3 ?' i( Q3 f
26. #include <linux/init.h>
    8 x' F3 B0 O% r3 A
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    . W& j; \2 q: x/ ^: ?
33. #include <linux/mm.h>
    # s( C) Y3 i! O
34. #include <linux/dma-mapping.h>
    ( [. `9 v+ N6 T% k/ V  O7 t
35. 
    
36. #include <mach/memory.h>
    ( R  c) c; {: H
37. #include <mach/hardware.h>
    7 g+ ]  C% A+ a4 ~  y
38. #include <mach/irqs.h>
    " _% T. J% d! V7 T
39. #include <asm/hardware/edma.h>
    
40. 
    * x9 g7 }- J  h: x
41. #undef EDMA3_DEBUG
    + n! A5 R9 P* ?
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    $ b8 o- Q  \3 d9 P7 Y, T+ x# ^/ \$ K
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    2 ^6 Y; J" {+ F" C+ J- _- [. {! t" B
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    # u( v: M( G! E0 m7 T4 T& {% s
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    & K' F3 U' q0 h
48. #else
    2 R& ]) r7 G) l, U+ R( v" _* L
49. #define DMA_PRINTK( x... )
    6 @3 W& n5 D4 d% I+ j1 S  o% y
50. #define DMA_FN_IN
    8 |  _6 \3 k/ |( x* d0 ^, o
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    8 y: E, F& L2 [
55. #define STATIC_SHIFT                3
    * ~, d0 D2 t6 H4 y. B- @( ?
56. #define TCINTEN_SHIFT               20
    4 H( \, x/ ^' x) w! b0 P8 d* K, R
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
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);
    ( @0 ^0 Y5 `/ h: ]  P$ D
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : M2 E) ]/ B; V* K9 |4 Q
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    3 Y. F6 r: m. ?- [9 K9 Z
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
      e9 n  w. t# I: e, V& {; f( `( r7 Z
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    * _& ~& t+ L' S2 f/ c0 |+ u
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    0 l9 w0 i8 n# L; o4 H
82. module_param(acnt, int, S_IRUGO);
    ; G4 J; v4 |2 Y. f
83. module_param(bcnt, int, S_IRUGO);
    % O! e% S  n' v  J
84. module_param(ccnt, int, S_IRUGO);

复制代码

9 z; \0 P: y+ T: R
      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。
: L9 ~( p0 y7 {& q& _# W     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

$ T+ p' }) O( N/ c$ j) N, ~& d