OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   8 Q8 }+ q# t- N5 p( I: T3 w. h
2. /*
   & P! x" v5 S6 o% ?+ X  x
3. * edma_test.c
   & E8 i4 m  R2 {# ^# [. T+ I
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
     V/ D: r; {) U# O5 `
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.
    ' f; u0 Q: B' L4 P$ [
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 _: E3 ^% W; q: y2 y# y/ ]
14. *
    % a) E2 n, d4 Q. C5 C
15. * This program is free software; you can redistribute it and/or
    / ^) L4 A5 R. ]# ]: P( a4 c& A+ R: F
16. * modify it under the terms of the GNU General Public License as
    $ _7 B: y7 H, t" d, M' j$ C  L* d5 t/ ]
17. * published by the Free Software Foundation version 2.
    ' U% t3 i# R( e
18. *
    0 q( d# u. a0 t% F, o
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    / t& J7 `/ t- R1 ?
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    0 M5 H* E& @% g; Z
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    # T! `2 E; \0 O* f. i- M
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
      P4 g& j* T+ n5 U6 R
29. #include <linux/interrupt.h>
    + p: _; j- @8 r7 i3 ?
30. #include <asm/io.h>
    - H  t4 e$ o4 d2 c
31. #include <linux/moduleparam.h>
    - b$ y8 r5 m: E
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    $ u( Q3 f3 r6 F& F: ?- [7 Y, W9 v
36. #include <mach/memory.h>
    1 r1 Z& v% ^! S1 m7 u+ a
37. #include <mach/hardware.h>
    & w) E3 E* M1 g' Y. q9 U
38. #include <mach/irqs.h>
    ! }; O+ B: x4 _3 c" _
39. #include <asm/hardware/edma.h>
    
40. 
    ! W0 E% i9 N) w4 a5 D. ?. J2 X9 J$ s
41. #undef EDMA3_DEBUG
    + z+ r: M% V' y9 h' d
42. /*#define EDMA3_DEBUG*/
    
43. 
    
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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    : R9 `1 D- M: ?% @, F( l5 I
48. #else
    " L7 e7 ]* i6 G, A! ]
49. #define DMA_PRINTK( x... )
    $ n3 C4 n- H0 {/ c5 R) S6 M( H' H
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    8 Q% R# b% ?/ ?5 P0 o1 m7 M7 K7 _
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    ( R# O6 F$ \, ~' {: v) v
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);
    5 Y6 F# Q# y  E! E
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;
    7 s3 R6 m$ c- r7 [% K* O  l
69. dma_addr_t dmaphyssrc2 = 0;
      G/ C; r2 r7 X# h( y) }, P9 P
70. dma_addr_t dmaphysdest1 = 0;
    8 s; |: \/ d0 }5 t: J( N3 c
71. dma_addr_t dmaphysdest2 = 0;
    3 ?/ t' C2 Z! g* s; d' }$ }
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    4 T# a% F3 {/ W8 [& d% |
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    0 g# i' E, x! \9 T5 N) i$ p1 ]% m
78. static int acnt = 512;
    / J* F) C; F: N& Z( J' G/ v9 G
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    5 d2 ^; t! m, G( W. r$ b3 I( c
83. module_param(bcnt, int, S_IRUGO);
    : A  {. c! x2 m% k' H
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
- a8 t- m- `; ^* O. }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。
' m7 t/ o1 @1 s     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

: S( O. }, |+ R& p( ^- l- {! ?! V