OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   1 E" X5 _2 j2 ~: Y5 P
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   $ m; I. M4 @, e
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   $ _6 E  L, C" z! d) A
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 A/ E# W+ d/ k
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    , v( b" m1 w6 w7 B5 K7 l8 k4 {6 F
14. *
    1 j% H% }1 R4 C' a
15. * This program is free software; you can redistribute it and/or
    : V& l0 A& P5 T% I7 N) P
16. * modify it under the terms of the GNU General Public License as
    ( r" }: h5 @% |0 r7 g
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    $ B( X' T  E7 x% C  U) Y$ Y9 c: e
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    , s  Z" p$ L, n! ?
22. * GNU General Public License for more details.
    % s; i8 S2 f3 K1 b7 n6 [/ g* X7 {
23. */
    3 c; M0 |: _0 G: E/ u: ]  [
24. 
    $ _7 t$ P- R) l& K) D- c2 A
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    4 @/ m( y/ h, H
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ) ^7 r: @: A3 i* O; Z, ]0 X- l
31. #include <linux/moduleparam.h>
    ! f3 C7 I1 _0 g0 G. @
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    9 A* ]2 n9 R/ R; m: j
34. #include <linux/dma-mapping.h>
    3 M. w+ s2 y8 h) F) G/ g
35. 
    
36. #include <mach/memory.h>
    : J" V  l/ n4 ^% n
37. #include <mach/hardware.h>
    - L9 _" z) ]4 [# X& ~* ]
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    + D9 c/ K! e1 b: _6 m/ H
41. #undef EDMA3_DEBUG
    ( O: u- J  t5 v( b8 k, F
42. /*#define EDMA3_DEBUG*/
    
43. 
    8 @. D( ]1 D& S+ L+ y. z. \# k
44. #ifdef EDMA3_DEBUG
    9 h7 R0 y; r7 l
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    + W3 q6 V6 E; C' ~. K
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ; T" g9 ]3 L+ `% G6 P7 n
48. #else
    4 [: v  m) P$ Z' e% S6 n& ?
49. #define DMA_PRINTK( x... )
    ; V/ G1 h7 v& g& u
50. #define DMA_FN_IN
    " F' s0 {8 h! ^0 S
51. #define DMA_FN_OUT
    
52. #endif
    * I' i/ k: }3 V
53. 
    ' t! y+ i- h- j$ K; y
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    9 H: d6 v, H3 G- E, v2 w; Y
56. #define TCINTEN_SHIFT               20
    : _3 P* q* y1 x6 T' ]* y" E; U
57. #define ITCINTEN_SHIFT              21
    8 q: @( y5 y' z$ V9 L
58. #define TCCHEN_SHIFT                22
    6 }7 W! T+ a9 g. D
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    1 m' G1 p* K- I, K% y6 E
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);
    3 e4 R. h  c6 X$ O# O
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    . K2 z5 ]' ?) G% `
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    0 v, W7 p* ?! g
74. char *dmabufsrc2 = NULL;
    9 O4 N! W4 n) Y$ D& Q
75. char *dmabufdest1 = NULL;
    + l* ^  Z! P& @
76. char *dmabufdest2 = NULL;
    
77. 
    2 f! [7 a& _" ]8 `- a; n6 t
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    6 ]/ {% v) H# W0 m# v  k
81. 
    
82. module_param(acnt, int, S_IRUGO);
    9 m. ]' }( ]0 Y% S* P# v- w
83. module_param(bcnt, int, S_IRUGO);
    3 S" C7 h! ]# }# S" C
84. module_param(ccnt, int, S_IRUGO);

复制代码

# R% Q4 p0 R& A# Q% L% }- ^" `, W      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
" j$ j  I2 n& a# x0 j! oarm-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。