OMAPL138如何在Linux下使用EDMA3驱动

yyj

/ o$ u" K! [6 L' r* j

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   9 u5 u( V8 u% a0 q& D) S
4. *
   " m: w$ k" a/ d7 G
5. * brief  EDMA3 Test Application
   # @% v! T) z& p  z  I
6. *
   ) [' _/ R2 Z4 O* p% Y5 m
7. *   This file contains EDMA3 Test code.
   7 \& n- \3 V8 y! p2 o% b0 |' m
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. *
    ) _: V7 s" u. G$ E" N
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    ( r* J- p5 B+ \7 h5 }
15. * This program is free software; you can redistribute it and/or
    , D8 l8 n, H" n" a% i8 Y
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    - @/ M8 z* R# [* d% B
18. *
    , R& ?) c9 |+ X4 ^/ Y
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ' J# s# ]/ S0 T$ {
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    # o. T4 ^7 f7 S* u
22. * GNU General Public License for more details.
    % R5 i. p1 D. G- u) C) H/ v: L2 E' w
23. */
    
24. 
    4 R. @  i8 d1 t& @
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ; t/ h, S$ s3 r/ x2 }1 e
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    - O* u# q  q+ s- c! l1 d
35. 
    " F8 K2 M" n# {# [# g
36. #include <mach/memory.h>
    ( _7 p) }& H3 \( v2 w+ Z
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ' U0 e* y! Y! R$ i- J! F
40. 
    
41. #undef EDMA3_DEBUG
    2 V8 _+ D' q& _5 B1 [$ b$ S
42. /*#define EDMA3_DEBUG*/
    6 Q* f7 N7 c) l' S' }
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ! A0 I+ y0 i8 Z* y6 I6 x# _/ F
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ' N, i- ?/ I* `; j! U2 ?  I2 ?
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    3 W! ?, ^6 N( O% s2 v  h" k
48. #else
    $ e+ X9 |5 E& g. x
49. #define DMA_PRINTK( x... )
    : G/ e6 N0 Z, H
50. #define DMA_FN_IN
    $ ^5 U) [7 o3 d; h" N2 a' K8 }/ l
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
    ! p. s: [$ Y$ Y
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    - f1 X! u' i' w9 t0 y
60. 
    2 J2 C# z" T& _  R' R) G* w
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);
    7 {( \% D5 x3 r+ G+ v+ d3 J# e5 P
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    ( u9 m! d) r: s
68. dma_addr_t dmaphyssrc1 = 0;
    7 \$ ~  Z! X! f) A% r+ f
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    8 E" a  s, D3 X  n4 N8 i& o
72. 
    
73. char *dmabufsrc1 = NULL;
      v: `1 k% y; w, B* f
74. char *dmabufsrc2 = NULL;
    * @9 N7 R/ Z, o; K+ z
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    * Y4 w' e8 `9 m, X/ t
77. 
    ( q/ i* |4 n- W& ]: Y! g
78. static int acnt = 512;
    
79. static int bcnt = 8;
    9 g: S0 T6 O3 l1 ^* B2 j
80. static int ccnt = 8;
    
81. 
    9 r: p3 ?# G% X
82. module_param(acnt, int, S_IRUGO);
    ! ~6 S8 o7 ^$ _/ x
83. module_param(bcnt, int, S_IRUGO);
    + x8 C1 ]3 B* {' L; t0 Q' v
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。


% J$ q- p( F+ W4 @2 W