OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   1 b7 t# B( e/ Z" x: {
4. *
     [2 L  {) n7 `
5. * brief  EDMA3 Test Application
   
6. *
   3 ]& G" K; i; h, G
7. *   This file contains EDMA3 Test code.
   : a+ Y7 F$ [" @$ ^/ Y
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   , W& ?  f: i$ i* y/ k
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    ! x$ E; U4 \1 p) p
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
    . t8 H4 e8 S! ^
22. * GNU General Public License for more details.
    
23. */
    * h& d# I" e9 C# ?( d+ ?. t) |
24. 
    8 }* g4 t) G% f5 H4 Q' M4 ?+ Q. O
25. #include <linux/module.h>
    2 g0 d) K8 |' q' s
26. #include <linux/init.h>
    3 O- v0 i- K. w# {
27. #include <linux/errno.h>
    0 S8 w9 a, b3 z' O0 {
28. #include <linux/types.h>
      T) N  \: L0 n" N! U* W1 I
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    8 K4 L# i7 Y% ~0 V+ ^& g4 a6 p
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    6 {& n+ R8 Z5 O3 `
34. #include <linux/dma-mapping.h>
    9 U( [/ j5 M+ e6 n4 S, q
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    * y% R; O- T3 E1 C
40. 
    & z* Z  _! T# i$ d2 Z
41. #undef EDMA3_DEBUG
    $ Y3 C8 f/ k0 U7 D2 Q
42. /*#define EDMA3_DEBUG*/
    + A; |! i! M9 r2 n) Q% ^
43. 
    ! p# x* x& C& |/ ]
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
      T3 b  J/ f% G- ~0 F8 x: I! z
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    6 P# Y& N) @; w1 }4 W8 c
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ; H; c5 @# B5 J; b2 w1 L# p. S
48. #else
    ! V6 a4 W: N( `* ~
49. #define DMA_PRINTK( x... )
    + o; L" p. x1 W0 I) p0 W, k
50. #define DMA_FN_IN
    * P. o1 k; L. s- ^0 V
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    , h: @" n1 E/ C1 ]3 X
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    2 J* ^& v! [  t9 P- S/ N
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    , N5 L/ y/ u: Y" W, ?
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    4 d; n6 F* J6 F1 T
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    0 v: R4 t4 g' R& `; @
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ) X- w0 h, s' e% M
67. 
    4 z7 o  Z4 {2 Z0 ~8 h. [+ ~, W
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    / B' q. S% X, N3 j: b' g1 Y" z- k
71. dma_addr_t dmaphysdest2 = 0;
    5 Z3 b( Y1 Q$ D0 \$ n' e' v2 i& F
72. 
    ' `. B. P( x: n  w3 T) R; b
73. char *dmabufsrc1 = NULL;
    ) M5 ?8 g9 ]% g  O  G; J0 e9 x5 I( F
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    % M6 b; P! @  a
77. 
    8 m1 g4 Y) ?& H% ?! E1 o# e8 r
78. static int acnt = 512;
      r& Y  h- R6 v/ R2 ~
79. static int bcnt = 8;
    - `/ ]& [/ f/ o% q" F' Z9 i9 _7 P8 d
80. static int ccnt = 8;
    
81. 
    . E0 _) @9 \9 M- |
82. module_param(acnt, int, S_IRUGO);
    - e+ ]8 f$ l: L' ~, X( @
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

1 G2 H8 J; ~. E9 p/ \2 d
, _* y& h! N, a& W. K4 E8 O      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。
7 P" Z; @/ q$ K' N9 f# f, r+ ^