OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   2 s& \: R7 {0 Y2 x5 [
2. /*
   7 r* t! P  u, C% E, P  d
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   5 u& X& ^) q% H" j' v8 a3 K
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   6 a  I0 v, n5 s/ ^+ W3 ~) M. O
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/
    , q+ t3 K' w6 K8 F6 `
14. *
    3 d8 b! @/ A  A4 }: Y# ~/ h
15. * This program is free software; you can redistribute it and/or
    - Z& L6 L. Q6 d0 u, b- J& K
16. * modify it under the terms of the GNU General Public License as
    $ b9 H5 J: ^+ |* x. j# K+ @( \
17. * published by the Free Software Foundation version 2.
    7 E0 h9 S6 o; f5 k' v
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ! ^8 C! T. t7 t; k
22. * GNU General Public License for more details.
    # j7 Y" _# |4 ~. x
23. */
    * ^$ J0 D" a, |" f: E
24. 
    . h& U+ V4 {+ l; e4 ^2 k
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    6 a) f0 X0 N5 o0 N+ e
27. #include <linux/errno.h>
    7 C0 W6 k0 _% I. ~- e8 S
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ' ^, i2 V5 H5 W7 {- Q7 r  C; \
30. #include <asm/io.h>
    - f( ^# D0 S. ?5 H# d! j2 o
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
      R; I" v1 U2 ]. c
34. #include <linux/dma-mapping.h>
    
35. 
    1 Q4 u; Q- e6 y2 g9 Y& s9 G8 [
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    ( {4 X  O  f9 W& T+ ^1 V2 J' S
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    * z1 \0 w' k/ {" {+ f5 J
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    / s% u8 E: _6 u  g8 M! q# B& E
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    9 T4 }0 G: {0 h4 g! z& S
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    & q/ c! Z* Y8 C
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    - R8 b) C' `* S" w
52. #endif
    5 B' G- X  q! L* F5 Q* b3 D, L
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    6 u; C6 k7 a- U5 u! Z1 E/ @- w
56. #define TCINTEN_SHIFT               20
    " H- e: X: i( F& E
57. #define ITCINTEN_SHIFT              21
    6 E) E: _; }  s
58. #define TCCHEN_SHIFT                22
    4 n+ C4 G/ J" Y" H1 r+ N
59. #define ITCCHEN_SHIFT               23
    1 C8 Y" b* F+ f  S) d
60. 
    
61. static volatile int irqraised1 = 0;
    7 t( D7 z; x' ?% M4 V
62. static volatile int irqraised2 = 0;
    / b8 F! a( p, z5 |1 E& |8 x
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);
    " ^0 b$ u: s% L) n) a* d
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    + j% }. @# o1 G" n4 q# n
67. 
    * L( J, d# O3 |$ ^# R3 B
68. dma_addr_t dmaphyssrc1 = 0;
    4 k& O' q" ]2 G0 K: L
69. dma_addr_t dmaphyssrc2 = 0;
    + O" Y2 j0 q$ f4 y( \9 l* a1 J) \3 s
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ' V& f% {* W" |" j; u% ~
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    7 W) y4 v9 ^2 O6 n9 ]
77. 
    - D2 O+ o5 q$ f
78. static int acnt = 512;
    2 V5 m6 a3 c  z5 {- r
79. static int bcnt = 8;
    7 G6 |0 I* l: a2 x0 J" I
80. static int ccnt = 8;
    
81. 
    , F) s, X# B5 V; q
82. module_param(acnt, int, S_IRUGO);
    $ `5 h& N- b* K# n
83. module_param(bcnt, int, S_IRUGO);
    / T& c" T) z- Z0 a. A8 ]
84. module_param(ccnt, int, S_IRUGO);

复制代码

* w) m, Y, \0 R* H  e* }8 E( ^' \$ l
; s  g4 \* G( o) d9 l8 `      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。
, j% c- T/ U  f" R# B     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

# w/ d3 W4 b7 F