OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   2 B% T# a, V) j% T* m+ i' p6 ?" U
4. *
   % N% }2 V: H* P& z
5. * brief  EDMA3 Test Application
   
6. *
   , q" V3 W4 \* Q, O& @
7. *   This file contains EDMA3 Test code.
   + V' G- R! _: P# @, \
8. *
   6 U4 V  o* D! O; q2 S  q8 f
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   / y9 S6 T( [' f$ o# |$ K6 i
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    ; G) O$ j; ~) x- I
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    * T; Y" h$ I8 y5 n' I  `3 S
14. *
    1 I( Q' G9 H3 b/ e5 C
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
    
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
    ! M" i4 T$ g. S# y0 r. m: t) M
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    : h4 N" j* h5 C% B
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    5 l# K0 r9 g" b& K0 W: u
30. #include <asm/io.h>
    5 T  o4 I* |5 v! |
31. #include <linux/moduleparam.h>
    + ^: l1 |1 D/ Q. N0 }% u  Z
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    0 j) j" M# b! Q1 y
35. 
    - m( a6 [( |9 \8 h% K* m+ I
36. #include <mach/memory.h>
    " D. v% Z1 }9 W; o
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    , q# {. I1 J+ z. c( u
40. 
    
41. #undef EDMA3_DEBUG
    1 x: h- p9 v, F
42. /*#define EDMA3_DEBUG*/
    ! p$ I( a& F. |
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ) L3 ?7 R0 b9 }* M0 M
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    $ ~; \# [) l; f0 [' u
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    % M/ f1 n9 k- _4 a8 b
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ' n5 b/ h. Q9 v( [
52. #endif
    4 Q6 ?& \. [5 [0 r
53. 
    4 _( f4 C& `3 h6 c1 G
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    , I+ M' e; \7 y: s1 _
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ) Z) P% t% n; ]) N: H; p
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    5 a  |8 z+ A6 e% ~8 Q& f' J
60. 
    
61. static volatile int irqraised1 = 0;
    & {; M9 R) y$ w+ u
62. static volatile int irqraised2 = 0;
    2 R) H5 e  f/ k( j  Q# 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);
    " L% i6 {1 g7 ^' }  _
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    , I  p! I, _4 M7 ?2 \4 g# K
72. 
    0 Y' [9 f& b8 |+ t% ?' p$ f
73. char *dmabufsrc1 = NULL;
    % C3 g) M& v( ^0 _/ U1 m: v7 T
74. char *dmabufsrc2 = NULL;
    6 ]$ M! y: s6 N$ p
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    ! k3 ~$ \$ w5 N
78. static int acnt = 512;
    - X2 d* O) q4 c2 X; @
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    4 e( V7 _% C7 T# X4 Q% x
83. module_param(bcnt, int, S_IRUGO);
    
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
  C: k. v! P- b( _6 Aarm-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。
# z& ]4 i! S/ D. O
6 V3 G1 v# q4 Y+ p! u8 e% Z