OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   0 k2 z0 h+ q: U' N. c1 @, B6 v
3. * edma_test.c
   : ^% H0 w1 w6 R& C* y4 B
4. *
   " J0 {6 h5 U( P$ e% Z9 a
5. * brief  EDMA3 Test Application
   : O! M2 d, M  d" j* R& A
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
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.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    4 d' e6 L( O4 Y1 [' ?; Z
14. *
    4 ^4 |! k) b! 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
    9 I* u! o* m& S# O/ s8 G4 t
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    , g( W9 K) i, B. g6 J9 `5 ?; R0 J
20. * kind, whether express or implied; without even the implied warranty
    " }9 u  e' b( a3 T
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    % z% l8 k% N  A$ q1 [
23. */
    . s2 ?$ e. q5 f! y  F
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    & C+ J  z$ I" Q. T9 d% B
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    6 D5 V9 ]9 a$ _
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    & T$ l, _$ ^3 y2 }7 d* ^" R
34. #include <linux/dma-mapping.h>
    " ?$ i' u1 Y3 D  W, J6 C
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    8 l+ K0 z7 a8 S5 j* R6 ?4 T
41. #undef EDMA3_DEBUG
    0 R! m  J! C6 m! r& j8 |. U' C
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    " _8 z% h- n8 ]; c
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    3 B# A% F5 G& N& d1 f& N
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    $ Q2 Y, S; l7 Z0 K! L
49. #define DMA_PRINTK( x... )
    : l) }6 d# G% q  D+ Y  b9 l
50. #define DMA_FN_IN
    . a$ [. Z: q, k! t; g
51. #define DMA_FN_OUT
    1 A6 }3 ~/ ?% i" w% D2 O
52. #endif
      J( Z/ ~7 k* h# I6 D5 F/ O" h
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    , J; p+ U/ T: V1 ?" w& u
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    1 M3 e% W3 {# J7 K' p  I! R% d
57. #define ITCINTEN_SHIFT              21
    $ X2 U- j0 T. }2 Q: _# U: K
58. #define TCCHEN_SHIFT                22
    4 x4 ]9 x( b1 K6 Z0 h* _
59. #define ITCCHEN_SHIFT               23
    
60. 
    1 i. u% B" Y) q+ d( A4 ^2 u
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" M6 \5 d! r
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. 
    9 I2 c, c) @* ^% ]9 m# c' v
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    + X( |% B# F( X% S; Z' f
70. dma_addr_t dmaphysdest1 = 0;
    ( a9 a! {: m* I4 m) a
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    3 {' T8 `/ a2 d6 @) `9 |. l
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ' n& d. z  j: Q1 s( A' \& j# [
80. static int ccnt = 8;
    / ^5 M0 a3 O5 a# _3 q- e: N
81. 
    $ w  f" V; J! Y. \  Q9 L  x( Z
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    1 |6 C% Y- r: M* n% k9 Z4 m- q
84. module_param(ccnt, int, S_IRUGO);

复制代码

) C# }- U8 s3 V
& r" D; c: X8 C4 R5 w0 D3 ]3 y. 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
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。

5 l5 p( ^0 d6 w
( `$ w# w) p' q' P0 D8 r% ^