OMAPL138如何在Linux下使用EDMA3驱动

yyj

" V3 f& w3 l- @

1. [code]EDMA sample test application
     \  m  o8 K  L
2. /*
   7 e# m( C2 ~' ^! Q0 b7 G7 e
3. * edma_test.c
   ; K  M+ m+ j: H( f$ q/ J
4. *
   : j" }8 y8 A) K
5. * brief  EDMA3 Test Application
   . l: j( W1 E3 t7 K3 \7 I9 s( b) ^
6. *
   , Y/ R- q& w/ h. b5 ~" U
7. *   This file contains EDMA3 Test code.
   : y3 c3 c% u! [7 ~( v; K: T' F9 F
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. *
    3 k% o6 R+ Z4 y1 c
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    + u" I$ X, q+ o: Q; b3 |
14. *
    % D6 I1 F. [! @3 @8 u4 @+ i
15. * This program is free software; you can redistribute it and/or
    + {% W* O. A3 G+ J% {0 H% e1 l
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    4 x. J. }2 N9 p9 l
18. *
    7 v3 v2 y8 [% u1 b
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
    
22. * GNU General Public License for more details.
    ( B' v7 E, U  m, i$ ^
23. */
    
24. 
    % O7 c' h2 h! L( [
25. #include <linux/module.h>
    * ?* p( i- W& U* u
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    ( R- @- k% U1 c
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    5 Q) t9 E8 ?  M8 f  V& F
31. #include <linux/moduleparam.h>
    ' C+ F. I6 `- L9 Y# d5 t& E% z, V
32. #include <linux/sysctl.h>
    5 V+ @3 W, g% o/ F
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    " W1 y, I  O- c  l8 R
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
      g- _$ i  r  A
39. #include <asm/hardware/edma.h>
    3 O: [0 y+ |- a# k- e- O& r$ ~
40. 
    
41. #undef EDMA3_DEBUG
    4 A3 Z4 ?% X" a
42. /*#define EDMA3_DEBUG*/
    1 a$ O1 N/ l9 n# A2 R
43. 
    & ?4 E( ?5 E6 ^: I1 ^$ t" n) R
44. #ifdef EDMA3_DEBUG
    9 |: P: F3 G7 N) i0 |
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    + }+ [. E$ n! P, D2 |) x$ o
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    $ E( T6 i8 \0 `. {
50. #define DMA_FN_IN
    ( O  C- ]( t! d
51. #define DMA_FN_OUT
    # e, _3 B) E; K
52. #endif
    
53. 
    4 ~; a' ]4 f; U- d5 r! g) ~
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    7 o0 f$ `' c+ g' ^0 B
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
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    # T; m% q3 A9 W6 i
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);
    . I% R/ _# x) _3 Y# h/ M5 j9 X
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    * h9 P$ k* f. t# U% p
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    2 e# \) R# z" v* D* u5 q/ L
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    5 R5 g, ^" j( N0 n7 J
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ! Q: _. n8 Z" w1 @0 \
75. char *dmabufdest1 = NULL;
    8 D: {9 h  M' r5 D/ R+ R; i5 M( e# b
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    7 l, B3 t- g* o
79. static int bcnt = 8;
    6 A$ c- ?+ U) A; V3 e4 q2 [
80. static int ccnt = 8;
    : \  F" W# r" D7 r, F0 c, L
81. 
    
82. module_param(acnt, int, S_IRUGO);
    - e+ c; `$ u- a% v* E% F$ Q0 d
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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。


1 N, Z) l- p3 M% g4 n$ B* @7 |