OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ) h8 F0 l$ ^5 p  N6 m
2. /*
   # w  D6 f9 z8 E) G0 C
3. * edma_test.c
   
4. *
     J1 t- d( L+ H" H& L( _
5. * brief  EDMA3 Test Application
   9 X0 Z: R) S& v# h
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   1 C$ S5 p  S& F0 [( _
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    ' W  N* l( `1 G8 Y4 l8 U- m
11. *         TO CHANGE.
    + q8 k0 v7 Q' s2 \* h0 ?
12. *
    $ W' i. ^4 \6 m# }& E
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    % r' }6 L* `3 p6 p9 s  y3 @
14. *
    / N6 M4 H9 V" |" W6 _6 y
15. * This program is free software; you can redistribute it and/or
    4 i+ E( x3 {7 Q! u" }% A2 h  i0 d
16. * modify it under the terms of the GNU General Public License as
    ( H/ i; R5 m( w) H6 r/ l- |' P
17. * published by the Free Software Foundation version 2.
    # U0 {! {4 `# u
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
      O( c' I( t; ~% j
20. * kind, whether express or implied; without even the implied warranty
    " K* t3 W3 Y: k7 l0 S6 q
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1 I% [) d% \3 d
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    $ [& d/ Y1 ]! ~; A; @0 K
26. #include <linux/init.h>
    " G! v4 L& ~- A, R, D; a
27. #include <linux/errno.h>
    7 J+ q# f+ F; U2 }8 N6 C( z  c
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    $ }( i+ o1 I  C& v
30. #include <asm/io.h>
    % ?; F( F7 }- U$ ~/ m3 ?
31. #include <linux/moduleparam.h>
    8 P7 h: O# K) w0 v6 F, Q
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    $ B6 o3 q! N' L" k3 O( {8 m
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    + |( c' {8 l- p0 k$ [5 z
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    - P  s9 [6 a, O- l3 S$ @
42. /*#define EDMA3_DEBUG*/
    
43. 
    * U! v* B$ o4 F. u7 S/ s
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    - s; p# |, V) S+ a/ d( @, ]$ X( I
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ! W1 Y8 u$ t+ }
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    ' q# x: `) `4 t. \
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    $ R) `  y9 ]8 |5 X
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    ( f# v' c0 n- v# Q* A  P( ~' S
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);
    5 V) L7 Q; u, A" U% c) [
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ( Y8 p0 X# }( I# r1 s
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    9 D8 Z: [6 B1 P- j" m5 M$ g
67. 
    1 F& Z3 \* Z9 C. V. z/ F
68. dma_addr_t dmaphyssrc1 = 0;
    
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;
    0 r. m6 t4 M; E$ K/ n
76. char *dmabufdest2 = NULL;
    ; a! y3 V5 Z2 K. k- t- R: z4 y& E. X" i
77. 
    / |' r) ?( J. p% @
78. static int acnt = 512;
    3 `  o" s9 E, ?8 u9 A: x) P
79. static int bcnt = 8;
    ; P) i$ M9 y. l
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    7 r5 k8 q) I8 S1 [) f
84. module_param(ccnt, int, S_IRUGO);

复制代码

% H; y( Y" s- }# S- g$ X      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
2 B9 o0 K$ d  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。