OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   * |2 u; A' u6 B
4. *
   
5. * brief  EDMA3 Test Application
   - f6 d2 F! d/ i, T$ r: F
6. *
   
7. *   This file contains EDMA3 Test code.
   . R# v( V- v- d1 _0 z
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   9 `. |( S2 q% B' Q8 M
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    / R" e1 P" e0 [& u" V* D
11. *         TO CHANGE.
    . _$ \9 y; e! S1 u: `& {
12. *
    + m! D( v, ~; o4 W8 A  Z
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    : ^3 H7 ^+ X7 t2 A8 k
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
    9 ?  L  M& Z9 W( Z) x0 ]+ \
17. * published by the Free Software Foundation version 2.
    . m4 r1 i; g) [: z5 M' ]" Z
18. *
    $ j' R& H' |* M  C/ Q
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    0 K; u3 ~9 f' t" W/ T8 _
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    : B1 J; S. U) s+ o
23. */
    
24. 
    : e  }! r2 K  ~( A9 Y0 ^1 q* X
25. #include <linux/module.h>
    $ m! m+ t5 K% `3 a2 b# j: p4 o
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    1 }0 m/ ]0 }- @- M# W8 ]
29. #include <linux/interrupt.h>
    - S# W- z! ~3 {0 \
30. #include <asm/io.h>
    # C9 O2 C& s' {! O" Q+ p3 @; i
31. #include <linux/moduleparam.h>
    2 V9 M5 i7 a. }- h/ x
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    / }& Z) o% Z" I. `
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    & t9 Q' ]. z2 q& j% j$ t; Q8 Q
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    " ?1 p9 q; A6 \( P. c
42. /*#define EDMA3_DEBUG*/
    
43. 
    9 z# `% `( V8 ?. i8 K  A: h% ~0 P1 o
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    # r) E+ R2 G- ~  A# G& s
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    . g5 Z9 E0 @6 q" F/ `9 A
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    $ `, w! C% H( j( v0 t
50. #define DMA_FN_IN
    : I. ?1 j" I/ O. i& a
51. #define DMA_FN_OUT
    * [( P4 m7 M8 i9 ^) N6 i& G/ `
52. #endif
    
53. 
    4 _6 F! l8 i4 b/ e1 _6 F1 r
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
      {) ]1 i1 D/ a  h5 G' F# r0 }
56. #define TCINTEN_SHIFT               20
    " |7 h( s. m- H  S
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    - Q3 ]* K* C* ?( @, ^  ]: C
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 W, Z& v! ^8 D! Y6 g  f* t* m: q
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. 
    3 D7 i4 H, r% A* ~. ]
68. dma_addr_t dmaphyssrc1 = 0;
    4 t( O: X# _; }" E
69. dma_addr_t dmaphyssrc2 = 0;
    6 n- ~; n5 s4 i3 G9 G& [0 X
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    & o& c" v* n" J* x: ^( x1 e, Q
72. 
    ! R' J  a; f1 k- p
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    - `& Z% v0 O( D
75. char *dmabufdest1 = NULL;
    - Z8 F" y6 j$ R6 f
76. char *dmabufdest2 = NULL;
    
77. 
    ! \# X6 q1 u8 r" A0 ?6 G: @$ o% O8 H& Z1 n
78. static int acnt = 512;
    
79. static int bcnt = 8;
    * ?- C( b& i" b  b) L( I9 w
80. static int ccnt = 8;
    ! F9 c& b# q2 B2 n  V6 n
81. 
    1 y) C& C2 }) }& \! [9 F
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    ) h( A6 p! r5 b! y
84. module_param(ccnt, int, S_IRUGO);

复制代码

4 P5 g) F3 ~9 [$ V- Y
      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
* Q% `+ [8 u  [- Uarm-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 y% A# y; r& n
' X* W  }  ~  r: [