OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ; C9 v- }0 N3 G! L$ g
2. /*
   
3. * edma_test.c
   
4. *
   . p) ?9 }" y) s( Y
5. * brief  EDMA3 Test Application
   5 P* o+ n- K% n# F
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   * x3 d' j1 Z( @- q
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    7 u0 Y  _" u8 C: Y9 Z& f" y
11. *         TO CHANGE.
    
12. *
    % p1 a7 E0 l9 s
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    9 f9 r) Y" d0 [" ?7 q7 x: ~
14. *
    0 |( A: O6 y" F0 w9 p! n
15. * This program is free software; you can redistribute it and/or
    , Q  s3 h: {6 _- t* C, \" A
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
      \- J' I. h' t/ |
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ( R* J" E; a2 D  O1 ~8 ~" m# g/ M" y
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.
    
23. */
    & k+ O  m. ^, J+ c- w( q
24. 
    ! b+ T7 J/ @9 C" G; S3 q5 x9 p
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    5 ]8 s$ P3 @3 _' s, q2 I# {, f0 C
27. #include <linux/errno.h>
    : s3 H+ e. \. g8 p2 F& j, Q1 p
28. #include <linux/types.h>
    4 d3 I" G; T0 h0 r. S
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    " F4 d  b( F; \# T' B
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    * g4 N6 n% f7 D/ X& g
35. 
    " k& D! a" g. D) I0 [% S6 `
36. #include <mach/memory.h>
    " Q6 q+ M2 T3 y+ J( B
37. #include <mach/hardware.h>
    ' I* x# p3 [4 U# ~# u/ v$ V
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ( z$ H# O. |8 `) ]: A6 k+ o
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    # Y( w8 U% f# R$ ]8 e
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    % V+ B6 J4 z) S# V/ h7 F
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    " M6 p. N  p6 q3 l! ^5 ~2 C
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ! g8 m, M$ A" f' A$ a! r/ s
48. #else
    
49. #define DMA_PRINTK( x... )
    " d- S  c) ]! @6 h& H% Y! F4 V- @
50. #define DMA_FN_IN
    9 `0 y5 m6 c8 J2 R6 x/ Y
51. #define DMA_FN_OUT
    ; S* ?$ \" E# K
52. #endif
    9 F- Y( E; U, c& \9 y
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    8 f( ~, }( @& P2 u9 T# f7 E
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    % K- `; O; O( h/ Y# a, Z% o/ d
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
      d, E+ a+ n5 m7 ]% y0 l
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);
    " ~/ t" ^) x0 M- L2 ~, Z+ i: w
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    3 x, A/ {: j) y7 q1 r1 @4 Y
68. dma_addr_t dmaphyssrc1 = 0;
    ! Z1 J* b# m6 n/ I
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    : \2 D. D& h. Q5 p' y9 N
75. char *dmabufdest1 = NULL;
    ) F, X) P* l: r% d
76. char *dmabufdest2 = NULL;
    1 J3 E, l1 l5 [% ]2 f3 ]
77. 
    
78. static int acnt = 512;
    - S8 i8 k2 P" M( \
79. static int bcnt = 8;
    , f; C* q4 ?# [3 K
80. static int ccnt = 8;
    
81. 
    % N. W6 e& }. l% H& w& s& R1 ]
82. module_param(acnt, int, S_IRUGO);
    . J- p9 ?+ i: _. B& n
83. module_param(bcnt, int, S_IRUGO);
    ! K! {; ?/ a" H/ ^; R+ o- p
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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
1 S; ^2 X) o$ ]  J: A* H8 Parm-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。
1 y! `3 E6 D1 b6 V7 v! X, X