OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   . T* O" A  g( h# u  e- W
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   - j- `  R+ k* f( M- H
6. *
   . n" X$ R4 G0 ~: {" A$ f
7. *   This file contains EDMA3 Test code.
   ) [4 M9 W3 U7 Q
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
    : ^# H$ w: }6 c
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ! V! |1 L% ?- Z7 @/ [5 x/ w& u
14. *
    
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    1 o2 O9 I" @6 W6 }
17. * published by the Free Software Foundation version 2.
    ! \8 Y. T. V/ K4 V+ k
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
    9 z8 Q& C3 ^3 A6 ^( U
22. * GNU General Public License for more details.
    
23. */
    
24. 
    ; h0 B& v. V1 Q. b' m$ h# X. s
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>
    " d+ f$ d; u2 A  `
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    9 j2 r0 e* r. o, J/ @; W
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    " F" i9 s+ V; n. r6 s7 G
35. 
    1 O& t! H# }, K# k
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    8 [* v* _5 F- R4 g' C
38. #include <mach/irqs.h>
    , x+ M  t7 r: c# P; e7 ]
39. #include <asm/hardware/edma.h>
    
40. 
    7 j/ ]$ ]# `7 A) K2 _
41. #undef EDMA3_DEBUG
    ! c- c9 D% ~! ]* q; l' v0 C
42. /*#define EDMA3_DEBUG*/
    ) W. W( ]3 n; t3 K0 @, H2 r
43. 
    
44. #ifdef EDMA3_DEBUG
    # ]) z7 ]: v6 e5 _2 N% j+ j
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__)
    % K  z" k0 f9 m( {) I" _4 T8 l
48. #else
    
49. #define DMA_PRINTK( x... )
    * w1 x) L; L9 a/ u7 g9 {
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    8 e- n8 `$ ?4 j. f4 C
53. 
    ' |/ J: i0 ?+ i' D* D) d  }
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    + t4 i( v7 p% K! H# v
56. #define TCINTEN_SHIFT               20
    $ n& i( v# g) X$ {
57. #define ITCINTEN_SHIFT              21
    8 V  p. Q; B2 v, P) ~; ^5 V4 r' f0 j6 F
58. #define TCCHEN_SHIFT                22
    " u! A& t' o/ D( U! C; I0 Q
59. #define ITCCHEN_SHIFT               23
    7 f3 @& O( g$ H2 `* |
60. 
    , k3 ^) f: c; a/ W) x/ ~% i
61. static volatile int irqraised1 = 0;
    2 h' N: R7 y6 J4 u* C; h4 S. \
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);
    
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    # O5 \  Z( ?- t
68. dma_addr_t dmaphyssrc1 = 0;
    " f. r& ]& @; M$ g& Y4 U
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    1 ~6 E/ m+ K5 ^, K; B2 n! ~
71. dma_addr_t dmaphysdest2 = 0;
    $ O; P: p$ P& S, A4 d
72. 
    $ s% }6 P8 X1 d% M- [9 E# N
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    7 @& L/ i0 ]- k' I( ?
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    : B7 G! \0 X( }% }3 {$ ^
78. static int acnt = 512;
    0 \" _- z+ z' \3 Y
79. static int bcnt = 8;
    % ^) C. h$ D* x; t3 G  [: J0 _6 z
80. static int ccnt = 8;
    
81. 
    ' D/ G' l$ F. u1 M1 i, J7 Z/ ?
82. module_param(acnt, int, S_IRUGO);
    
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。

% z0 w1 D/ H  v# O1 `