OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   " Q1 F2 a/ [6 ~8 J: K5 v  l- K
2. /*
   ) V% P  P; X! R2 j6 I1 z1 S. J
3. * edma_test.c
   8 t1 f. n( x9 ?$ w
4. *
   6 J3 ~5 c# p+ \
5. * brief  EDMA3 Test Application
   5 t! H/ e, i1 P2 K. _) f6 J! w
6. *
   
7. *   This file contains EDMA3 Test code.
   & o% J9 C$ P  U( X" L7 r
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
    - e5 _$ E7 |, N" F$ E9 R6 q. ^
11. *         TO CHANGE.
    
12. *
    # M" A' L+ s; P4 s1 ^( f: N
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    2 `6 V6 O/ D7 Q+ o: l
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. *
    ! _9 Z: A8 m- e" P! j% c
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    8 H7 ]! P  ~& Y2 }; i
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    2 p8 }$ c$ C* L  C7 J* r0 e9 W
23. */
    : l0 w, ^2 p  y0 R$ t1 j- N
24. 
    
25. #include <linux/module.h>
    8 ], ^( i4 Z, y
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    , h$ T9 }8 c+ w+ M% q
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    1 N6 l) S& M1 [) O3 [
33. #include <linux/mm.h>
    + h) C& i+ c- O2 X' E  j9 g. M
34. #include <linux/dma-mapping.h>
    
35. 
    & S7 B- R% n$ }+ x
36. #include <mach/memory.h>
    , H5 q3 i) H: D3 W( r1 Q& ?( N2 x+ e
37. #include <mach/hardware.h>
    3 T# s4 I8 @3 f
38. #include <mach/irqs.h>
    6 Q: M$ F1 @! ~* S) f% X" }
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
      K- I) H( ]4 ?$ `9 t4 Z
42. /*#define EDMA3_DEBUG*/
    : m+ {6 [* I* L/ Z% ^- {3 T$ @1 b3 C
43. 
    7 e0 N2 G. x: j  P" e2 T
44. #ifdef EDMA3_DEBUG
    , D& I5 g* \7 m" f) p3 z' p  z# M
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    $ c. g0 L' q6 d$ Q. e% `
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    0 x# C+ R/ F+ K# Z
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    + |4 J1 h( C' a( |2 k7 _; B
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    $ C! C6 e* q* z& V9 l0 r( B
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    + n" F+ l8 k9 m7 a" i
57. #define ITCINTEN_SHIFT              21
    + ?' D/ T( u2 y. Q
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    - ]: X! @. q. z9 p4 G) s9 f/ X
60. 
    + h" S3 k! J$ \- U: [) Q' Q4 m
61. static volatile int irqraised1 = 0;
    6 K) l/ k; H4 Z9 n" q" Q6 v
62. static volatile int irqraised2 = 0;
    
63. 
    2 K( q0 F# Z# ~5 Q, ]- J7 c$ N- D
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;
    : w* v; I7 U' o6 }$ q$ f( L/ l( F  v
69. dma_addr_t dmaphyssrc2 = 0;
    / ~$ Y4 Y- I$ I& q# Z
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    1 I+ s# R3 T5 c& G
72. 
    
73. char *dmabufsrc1 = NULL;
    ; ?' m. R0 X) X& U6 r6 {2 O" }
74. char *dmabufsrc2 = NULL;
    - I4 ]8 p4 w* g5 \, {
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    # r* t9 d& c- M4 ^/ G1 c
79. static int bcnt = 8;
    
80. static int ccnt = 8;
      P/ a+ U' |' ?7 i3 J' X
81. 
    
82. module_param(acnt, int, S_IRUGO);
    8 ]/ c5 u2 y& f& Q
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
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。
. S) w9 r6 m1 Z5 L' }

) G( V/ p1 h2 ]' o, Y4 j0 C  V