OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   4 a1 R, k+ H& Q" d+ N/ j' O
3. * edma_test.c
   1 ?$ ?0 c8 M( z* x% W
4. *
   8 k& p+ e$ n) X2 `3 X5 A
5. * brief  EDMA3 Test Application
   
6. *
   1 v! b6 H6 d  D
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.
    5 p9 d, M$ }- W3 u
12. *
    1 O" P0 C1 M5 c7 p1 x
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    ; f2 \7 n7 b# y3 k% q  {5 a% W
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    $ G" X  c. Y: Z7 {7 h) C  F
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ( I3 u- r$ S' Q0 _7 Y
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ' n2 z& w; S- }2 O# z
22. * GNU General Public License for more details.
    
23. */
    & T' V: Y, f8 Q! A- @. e
24. 
    
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>
    1 ]- G5 ]; M! L. d( h  X
30. #include <asm/io.h>
    . O5 s  f" Q# h4 p- T# g  z  C  ~
31. #include <linux/moduleparam.h>
    / c; p1 O, C# |. E; T
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    7 X' a# p/ C/ N' m+ \- l2 F3 ?
38. #include <mach/irqs.h>
    % X; {* |' j  @) w
39. #include <asm/hardware/edma.h>
    " t8 }/ T  ?( `" ?9 @
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    , H' y" z+ V! h$ I( ?+ L
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ) H  Q: k. m* H
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    6 ]( q: n( d+ `# ^4 Z' P
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    , h( q2 A( k3 t1 L) d- a
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    1 \. L3 z9 D# q$ y5 z
51. #define DMA_FN_OUT
    3 o( E$ ?" I/ M: E0 c
52. #endif
    5 K& o" v# a8 ], C) `% ]5 H- |
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    5 m1 H: i# a2 c* k7 l
55. #define STATIC_SHIFT                3
    # X! Z0 ^& z" C/ k" _9 l" n* i
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    6 G( y" \2 P; y
58. #define TCCHEN_SHIFT                22
    ; J( p. G1 ], }  t* E& C) O
59. #define ITCCHEN_SHIFT               23
    
60. 
    
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);
    
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;
    & E* t. p+ F, Z: j! R& Y3 X
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    6 w; G. [2 A9 T
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    # r  ~0 V8 v" |$ P
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    & @6 Q3 D2 E4 m, t
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。
; o+ m7 M: s* S
# ]7 h- t: ?, T, O3 K
4 @: u! V' I$ j7 l  }