OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   / d2 M1 {, S) V# ^
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    7 V# Z% N0 E  z
12. *
    6 L1 F! _( g( t6 h6 W" R
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    8 |2 ~, U6 {8 f( L
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    - I  ]0 U4 B; r  v, k2 u; M" d- x
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
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    / b7 d  ]! j8 j9 U) \3 Z
25. #include <linux/module.h>
    4 p% B2 T& U, R0 X$ {
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    1 p$ `# F" H$ c( T
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>
    0 e, j. j4 U$ Y. b; R4 |" z& M
33. #include <linux/mm.h>
    ; ^! S' L# P$ W% g0 B% x/ C
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ; j! m" m+ {' J* q$ f2 t# H
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    - z, i1 H/ H$ n$ G  M
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    - E6 S* J( {4 [5 E  d+ ^& D
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    4 f! o3 P. U4 w
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    $ J/ C4 G" o- K7 k+ w
50. #define DMA_FN_IN
    & A* U; H6 u7 ?2 \6 G8 C
51. #define DMA_FN_OUT
    2 R' @, l5 u' k
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    + Q" Z) r' Y+ v7 J  v6 F
55. #define STATIC_SHIFT                3
    ' K/ ]3 p- b, w% v- Z0 p+ i
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    . V- X3 `1 ]- c8 h2 [. S, F8 T' I
58. #define TCCHEN_SHIFT                22
    / U1 j6 C' l: T1 Q; p1 x
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    7 P8 r. p: h% X7 x
62. static volatile int irqraised2 = 0;
    
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);
    ) C8 W# E  `, U. o
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , O9 h+ J, J6 ?) X0 Q3 i1 K7 o
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    + u; i( c; D. t
70. dma_addr_t dmaphysdest1 = 0;
    0 {/ H. q3 d: M  @! f3 k( `
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    ; r7 X% K, V# J% w/ G; \. i
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    3 P( V. w9 m$ {1 O
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    % _5 L; M1 v' f) F
78. static int acnt = 512;
    # {/ X/ m6 ~5 p, a& v6 P1 q
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    . v+ H+ E; t5 [9 e
81. 
    & G6 E4 b" b. u( S
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    . K( p, J! W$ P
84. module_param(ccnt, int, S_IRUGO);

复制代码

$ J5 N3 o* z0 ?% ~" u9 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
5 f$ r5 w; B* g4 @/ D2 _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。
4 M1 T1 h' X* K3 r0 U