OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   & d* Y8 I# X/ U* P0 i1 \* ^, U5 F4 c& q
8. *
   4 `- I+ {6 h3 q
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.
    + P& e6 D; z0 Y9 t1 }
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    - z. }9 N2 ]! _( j" I2 m
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
    6 S8 C5 w$ Y4 t! R* K
17. * published by the Free Software Foundation version 2.
    ( C7 s7 }" S' f( Z
18. *
    / e+ J2 W, }, L8 W+ t# M
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    7 g0 A3 a( I8 `8 L3 i
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    $ c( g3 x) ]- Z  T3 T
22. * GNU General Public License for more details.
    " `! {3 j6 L4 S4 A7 ^8 a
23. */
    
24. 
    
25. #include <linux/module.h>
    : t, G: b" r" t) v! u$ J
26. #include <linux/init.h>
    0 G/ S7 r" f( \/ E5 h4 y
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    " U$ L- s- N3 ^0 M4 [
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ' Q' G) P5 S3 q: q: `! k% t
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    9 b+ J4 _: S/ a4 G, P
35. 
    / }9 ~) _$ [7 n. b1 h6 P
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ; U% \/ |% N2 R% ~
38. #include <mach/irqs.h>
    ) a! H% J* Z# {5 I9 h5 _
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    ' W; k. g" U$ A* e* N+ C
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__)
    8 \( U. ^, j/ o, _& W5 L" X
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    1 \8 u+ R0 U2 Z: m. }+ q; K+ d" I
49. #define DMA_PRINTK( x... )
    6 A) N! I; l( n9 `  J3 a2 K! [; Z  ]
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
    / e0 \1 w$ ~- o, S/ v% |& t
56. #define TCINTEN_SHIFT               20
    6 s! ~6 X* D5 c4 y# Y
57. #define ITCINTEN_SHIFT              21
    : _# Q$ A: |% P* Z9 w. n
58. #define TCCHEN_SHIFT                22
    9 O4 l% ^: n2 }+ J
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    . F+ y  w+ y! w1 }  q6 g' \2 W# M2 c
63. 
    $ C# ?) l) x) r+ S
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);
    ) i( T7 p1 ^, {5 s  s2 K! t
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    + Z' _$ B0 J5 }! {, w1 y0 @( P' a
69. dma_addr_t dmaphyssrc2 = 0;
    " C! d3 H3 i: C
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    " o7 Q; _) E8 p( o2 [. ]5 L
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    , e1 E: I* c4 R8 Y& K& v
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    " Y3 N/ r( i' F
81. 
    / e% s* U7 ?, Q! L& U$ x
82. module_param(acnt, int, S_IRUGO);
    3 e- D* g: j; y
83. module_param(bcnt, int, S_IRUGO);
    ! c/ I5 d$ l5 \9 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
* C$ i5 ?" Y, Garm-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。