OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   % J( l; B4 p4 [; v
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   2 T! A5 a) W( w* Z  \- D
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   - H2 |1 m3 x6 a1 m& C! E
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    % {. j! |3 h6 F. [9 J
11. *         TO CHANGE.
    / E: l: ?% ^) r, L9 g  R+ y
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    9 W! C, k* f9 p# b2 r5 p
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    $ t* k/ B: x3 S3 Z
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    : i/ C3 w' X' w' K; Q5 B2 E
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    / i# x$ Y7 e2 r4 b
22. * GNU General Public License for more details.
    - k0 c- J' X' H- C) e
23. */
    
24. 
    & o- d6 [6 @/ E) i0 o9 o
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    ' F3 v7 s2 v: L0 O6 d' w
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ) j; o$ T/ l6 V- m
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    $ E5 u' `/ S5 W3 V5 n
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    1 S$ P# g8 p, Q7 J' |
37. #include <mach/hardware.h>
    " n! l- x! l8 V5 A: G7 p/ Q% |
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ( x, Y4 k5 H* C/ [
40. 
    / v' O7 Y* }7 L- S
41. #undef EDMA3_DEBUG
    9 o+ Q- b5 O) I8 v8 A/ Y- X
42. /*#define EDMA3_DEBUG*/
    
43. 
    , M" u- L. u9 J6 s% F
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    2 t) [! Z. R! c6 Y* W
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    & O& C! Y3 C" ]
50. #define DMA_FN_IN
    5 k+ J9 \0 d, g6 W: t
51. #define DMA_FN_OUT
    4 u( @1 W% t% @% a1 J, {. [
52. #endif
    
53. 
    4 Z  n4 x4 k& M/ r+ e" I. p
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
      j. w2 h: L, W  u# }0 x
56. #define TCINTEN_SHIFT               20
    0 q5 X0 s# `' b4 |
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    7 P  I* z5 f2 {3 ^6 t: B
59. #define ITCCHEN_SHIFT               23
    
60. 
    . V  B1 D  s5 z, G$ }4 A
61. static volatile int irqraised1 = 0;
    " g+ o' {) k  n6 n# C: R% t
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    # O; g4 ]# ?  G5 D4 U
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. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    1 z  u% v- ~9 x/ s. O0 y' C
69. dma_addr_t dmaphyssrc2 = 0;
    ; ^# H% |( b" q2 {8 E
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    5 r7 i* O2 s: x/ ^8 }6 [
72. 
    ! {3 [5 \1 d- J$ Y" Z% c+ O
73. char *dmabufsrc1 = NULL;
    7 h% W( Q7 u/ `3 v5 r7 @, k
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    4 o8 Z% r" w$ V9 `" @( O; t
77. 
    
78. static int acnt = 512;
    ; P0 ]. i) N; l* B
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    8 h  J/ ^; A/ ?
84. module_param(ccnt, int, S_IRUGO);

复制代码

' i3 U& @$ T' ~9 B$ n$ o) J" t      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。
! F5 \1 b5 ^* f5 j* r
5 M( h. b4 L8 F" `
$ y/ x0 E4 f6 i4 f) D) m: @