OMAPL138如何在Linux下使用EDMA3驱动

yyj

. i- v5 G/ W: X/ j1 L% L* @

1. [code]EDMA sample test application
   
2. /*
   3 ]) e4 \* t* F) X: B4 d
3. * edma_test.c
   % g2 q9 S! z2 a
4. *
   ) z+ U7 D+ w; l
5. * brief  EDMA3 Test Application
   * f: f0 b/ P7 E
6. *
   2 V# Y0 e$ q2 l" |
7. *   This file contains EDMA3 Test code.
   
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.
    - _! U! V4 G/ A- z3 {+ B% q6 N
12. *
    : [1 o. c$ o* P
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
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
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
      w% r7 `  u& ^, V& s
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    9 G: l' \& Z3 ?. F; Q; @- a# p3 h% x: ^
24. 
    $ l! B7 v9 B# V1 s: |5 n" m
25. #include <linux/module.h>
    , w2 A- C2 c/ I
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    3 q7 Z* g0 E5 ~. N+ r! h
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    + |/ t; N! o1 R* ~1 U/ W
34. #include <linux/dma-mapping.h>
    1 C# A3 c/ P0 _) q/ {% `
35. 
    4 u) `  |* l( g2 b! M& n
36. #include <mach/memory.h>
    ; Q7 X" ?, m  r# L1 Q
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    7 x* `6 I8 B0 ~/ @$ S0 B2 @& b5 Q- w: f% A
40. 
    + [  y4 E8 D! B4 {# i& ^- U
41. #undef EDMA3_DEBUG
    , ?  T- S9 [& X5 B, |0 t, x
42. /*#define EDMA3_DEBUG*/
    6 t# x/ f! i* }/ {8 s% a* A
43. 
    ) U  q: e# g  v7 l
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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    * p0 ]# t; @& Y/ x$ D6 u3 `7 V8 c; N
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
    
57. #define ITCINTEN_SHIFT              21
    ( [. r" m. [1 }4 D  v
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    ) @8 ?9 Q; I( O# x0 y
61. static volatile int irqraised1 = 0;
    + [- i! G9 r2 |4 ?6 \
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    - v+ e* x0 d6 u( ~# `
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ) P  Q8 N: s  |: z4 D! l7 h
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
      X) H# h0 V9 L9 _
71. dma_addr_t dmaphysdest2 = 0;
    / @$ t- w0 p# ?% N0 ^3 B  U4 ^3 ~/ g4 ]
72. 
    
73. char *dmabufsrc1 = NULL;
    # J: |, D4 d* G+ [
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    $ c  I4 I8 ]. A4 \% I
76. char *dmabufdest2 = NULL;
    ) g9 s) P2 l2 L$ J% r% j0 g. {
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    7 K, L) Y( [6 Z; L0 g' N5 ]3 U/ I
81. 
    
82. module_param(acnt, int, S_IRUGO);
    * d. _7 J8 s% B$ |4 c
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

3 O$ K# E% X( t0 q, t% s. l$ u2 }
      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
5 N8 A. ], b$ J# P; \7 sarm-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。