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
     f% ]6 ]5 r" s4 t7 o
6. *
   
7. *   This file contains EDMA3 Test code.
   : l# a, q2 }9 ~3 Y
8. *
   3 o- l2 S" A! M$ C" U. V, W5 G
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ; {6 X: G5 Z3 ~+ U# p* [
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    / m8 V& A) t, `# o
11. *         TO CHANGE.
    
12. *
    : j3 w5 j0 U2 J( a. x* e
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    4 _8 u' E/ U1 a9 \* w% M! g
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    ) b! I* n! @9 T* E! B
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    % N  I9 m& @6 @4 B! Z. [
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    ; X5 }8 P6 a* ?* p& R# y
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    ) b2 H; V: d* `  ]& z
27. #include <linux/errno.h>
    6 I. L! u& {1 q  |% V
28. #include <linux/types.h>
    1 d  K7 d/ ?- [( Q+ i1 x
29. #include <linux/interrupt.h>
    ) n2 N8 z3 L& u0 ?6 u5 e6 g# M9 z0 J
30. #include <asm/io.h>
    * v  c: E7 a1 e
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    : g) j9 a7 {( G, j
33. #include <linux/mm.h>
    0 v1 z2 U3 d0 {! ^
34. #include <linux/dma-mapping.h>
    5 T5 u5 Q# W/ {
35. 
    ) M& ^* s5 _* u
36. #include <mach/memory.h>
    " H, _9 w6 X( u5 q5 _  f8 Z/ S
37. #include <mach/hardware.h>
    ' `3 i: B7 Q: U8 g. u6 G/ n
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    ( V0 p( u, o4 j3 H' w" i
41. #undef EDMA3_DEBUG
    / j4 L+ V$ A6 a: g6 k
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    6 g3 q  V9 F/ ~- O4 B
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    6 k, J, [5 i; z6 O9 o
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    # {; W( d/ V  a3 V1 Y7 x: `2 J
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    9 V0 ?: r  y7 V9 D) s' V
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    + p+ H, A4 a. N0 i5 I9 Q
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    9 |' @; F3 K& p, r  g4 i
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    - N0 n. c9 W. ~, W
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    / [( r4 R& X; F4 Z9 O# _
57. #define ITCINTEN_SHIFT              21
    6 Q6 e1 o- F' L% s+ B$ f
58. #define TCCHEN_SHIFT                22
    ) i7 R3 Y& |8 |, H6 s! I. E2 I
59. #define ITCCHEN_SHIFT               23
    
60. 
    2 x& n! N- o: g( q
61. static volatile int irqraised1 = 0;
    ' l/ X' `% w+ Y
62. static volatile int irqraised2 = 0;
    ) h! n$ ^! C9 g9 r
63. 
    $ t: \% Q" g+ i- |5 Y
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);
    ! k& w7 K: B" O3 M' K6 L
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;
    3 _/ M% s5 x4 O+ m2 I/ d( o
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    , e1 u7 v7 z5 t1 K7 |
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    5 E! I3 k5 a0 i0 i# c, X/ e
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    1 f$ z0 |' F. E
80. static int ccnt = 8;
    4 |3 D4 N2 S4 w
81. 
    
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
/ }. B3 j, @% M* s+ qarm-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。

4 j4 E% d! A3 @1 F# U/ v: X
( a5 W9 D* e" Y7 I