OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   4 m0 `8 g3 e$ }! F7 t) `
2. /*
   + y% e# {% q( {: G
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   $ f, N% _( F4 c0 L  x+ t
7. *   This file contains EDMA3 Test code.
   
8. *
   0 ?+ S* ]5 D% `$ c* N
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
     h+ X0 G1 w" q2 n/ \
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    ! k: A: _5 G" @5 L1 _/ n
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    0 t+ f. @3 ^6 `* R  i% |: y
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
    $ `* d( x% `+ |8 E' r
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    1 R, }: ?- p* G' Y; \. o
24. 
    % _& ?" t5 A( l# O- V/ a( D
25. #include <linux/module.h>
    6 j  O+ B) a$ g9 m4 X0 n
26. #include <linux/init.h>
      m, T& V. l% g6 x7 a6 M
27. #include <linux/errno.h>
    / E, E9 Y. l; Y* V+ a6 F2 U
28. #include <linux/types.h>
    9 I" B3 s5 c* B1 W0 ]. _2 e) N# i. Q$ G
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    2 x' g; A+ M+ M# s
31. #include <linux/moduleparam.h>
    ) [  G( G- D  h4 m% J
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    $ A2 y9 t2 ], u6 u2 C
34. #include <linux/dma-mapping.h>
    4 f& T4 I" ~! }% `
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    9 K6 Y( C/ w! R$ o9 H/ _( s" k& U) Q. E
39. #include <asm/hardware/edma.h>
    / f9 V: ]  V% |$ u
40. 
    
41. #undef EDMA3_DEBUG
    + p5 L6 z& P% w6 S
42. /*#define EDMA3_DEBUG*/
    / U" F- U5 W/ F4 Y$ E
43. 
    " U: [/ v6 m& @
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    7 F: u* n! ]( [. J# q! u5 U
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ) M7 s: g( h4 u2 F
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ( M- t3 n" c1 x5 C) J  S4 }3 k
48. #else
    
49. #define DMA_PRINTK( x... )
    
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
    
56. #define TCINTEN_SHIFT               20
    , o* @- e5 W* O  W5 `+ @
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    & m3 o7 m1 F! P: [5 K" Z
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    $ E8 q5 H7 @& a8 m( T
62. static volatile int irqraised2 = 0;
    + i% m/ Z$ X1 g. F3 l' V* J; {$ s2 ~
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);
    * J; \1 v2 k5 c& r3 G
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;
    / M! V  A5 N, _& O. u4 L
69. dma_addr_t dmaphyssrc2 = 0;
    * ~9 M9 e8 R# T$ q6 {
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    5 |1 m! X; X  ^7 z6 K1 ?" q
72. 
    
73. char *dmabufsrc1 = NULL;
    5 _% A  K! s5 T
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    # w1 u) f# w* g% H1 f5 [* r
76. char *dmabufdest2 = NULL;
    7 Y" X) c7 z1 b5 r3 c" v/ L: m& F
77. 
    ) K5 Q  ~( G1 x9 H3 z9 U, u2 }
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    8 }9 Z# s# i$ ~" y) d* `2 L
83. module_param(bcnt, int, S_IRUGO);
    7 s3 u: D2 y) s1 B% H( f
84. module_param(ccnt, int, S_IRUGO);

复制代码

/ @! B/ D! ]$ v+ ?! l
) A: v' r* G% p- ?      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。
, G; w5 p+ p  k     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。