OMAPL138如何在Linux下使用EDMA3驱动

yyj

. b0 ?0 h  I8 [8 [

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   0 H# M$ u. b# E
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   0 O0 U, w0 w9 T) n4 d9 n+ Q
7. *   This file contains EDMA3 Test code.
   8 F( m4 }, j. J, d) i: Q
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
    ' W% `: ?/ O: X7 w$ t
11. *         TO CHANGE.
    
12. *
    % q: t  L4 ^7 o6 n+ D2 b. [
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    $ ~  Y( \7 y3 n& R* o; |6 O' F
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    & u, |! W; C# o5 }1 B! e- f
18. *
    * U- j! \# O. q
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    6 [' P; `/ k6 g" d0 b0 _
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    . \1 Q' q1 n4 u
22. * GNU General Public License for more details.
    2 w) N7 @" b, D! `% h6 V' O4 Q% |
23. */
    
24. 
    ( @* N$ r. m3 ~8 Y7 m
25. #include <linux/module.h>
    4 P9 E, |" b& @& M5 s
26. #include <linux/init.h>
    - z" j8 d5 \' \
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    4 L. Z: i% z1 U* t: y$ a  G
29. #include <linux/interrupt.h>
    $ Q% z, [/ v, r) V/ R9 H
30. #include <asm/io.h>
    3 u4 F- x8 b+ l7 E& H+ R+ f/ ]
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    - V# C, U: j. o
34. #include <linux/dma-mapping.h>
    
35. 
    2 `9 Q  c  m' y/ |
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    7 N4 L% z/ F0 l
39. #include <asm/hardware/edma.h>
    ! j  x! B3 |2 c1 F7 r/ V
40. 
    7 J, [+ N, H# P  L" F8 b
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    6 X: f3 |- ^: U0 ]) O
43. 
    
44. #ifdef EDMA3_DEBUG
    & F& |+ Y6 i1 n
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    2 S* u; C$ C' u5 v. I0 a# d: o8 o
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    2 E1 j3 V! T- L1 E' h) ^$ G
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ; q% _6 w3 w# e9 n8 @
48. #else
    * p- p5 C; {0 \8 E# c/ V
49. #define DMA_PRINTK( x... )
    + q8 `& c) y8 w2 q% X8 J* \* _
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ( r8 ~' n: j. J2 r* ^
52. #endif
    " A; E& O5 b  I( L0 I. Q# ]% n* y* h3 [
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    % _0 O; p% n* |# Z3 X: v
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    4 _6 M, k" o8 z& `
59. #define ITCCHEN_SHIFT               23
    . a" H; S) C, q: `& t% `, }
60. 
      u9 U5 U  n! q% d. e0 R& N* `5 F, r5 h
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);
    
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    % R& W8 Q2 D" W
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    . d9 p( l$ K8 z; \" I$ O
67. 
    ; m  z/ v9 T) K% i
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    , L% M% M: l# b+ h! }
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    5 ~# i7 u- A/ i5 Y
76. char *dmabufdest2 = NULL;
    0 @( K. d9 v& f/ L) D- {8 Y
77. 
    , ^2 {" T6 D* o0 T
78. static int acnt = 512;
    % r6 M, L6 B. n" l& m' [
79. static int bcnt = 8;
    . H" T" I$ Q: W5 O" \1 A& E
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
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
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。
4 K0 @: W* |$ s9 U     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

: X, V5 ]7 x7 N: _, }