OMAPL138如何在Linux下使用EDMA3驱动

yyj

: U! m% B1 Y7 I, x  Y- p" p1 i

1. [code]EDMA sample test application
   + P2 o8 V8 {5 K% O
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   / f" T7 ?9 K4 P. N" N
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   / [0 F+ F2 y7 N8 [6 _$ ^7 [
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    / S; f! V. [& m+ E6 a% g# X
14. *
    
15. * This program is free software; you can redistribute it and/or
    # d& I/ y5 n5 c2 b$ a
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
    6 m4 i5 z5 p' g  f2 f6 o
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.
    1 b( B5 j# g5 b" a, i4 x) ^2 x
23. */
    $ G  i2 C+ E* A2 p! J. U
24. 
      P; `  ~& S9 m. a
25. #include <linux/module.h>
    & g0 d4 X7 m2 A* P0 `+ z
26. #include <linux/init.h>
    $ D4 a1 k4 s& z
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ( t8 u1 q) ]- r
30. #include <asm/io.h>
    * O9 ]7 m  m4 j
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    ( C5 `3 M. [6 C/ k: @; j! ^
34. #include <linux/dma-mapping.h>
    , K: q9 u- o# J7 g  o& V
35. 
    4 r( v1 G, {' `9 e
36. #include <mach/memory.h>
    2 @% h9 p7 |' M5 k% r$ G: s# I
37. #include <mach/hardware.h>
    / ^9 ?2 }: f7 ~% X% O/ Q; S$ B
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    3 b% S- u/ _( e
40. 
    
41. #undef EDMA3_DEBUG
    5 B) S0 C- w2 c- c- V" Y( L$ `
42. /*#define EDMA3_DEBUG*/
    ) S# |) p! c7 V# a$ u$ `6 z
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    , h1 ~& o$ a! S0 v* K5 p1 z$ h
50. #define DMA_FN_IN
    3 [- _; v, C3 U) ]4 i) f
51. #define DMA_FN_OUT
    
52. #endif
    + q( {  W" Q' Q. w
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    * ?. Y3 ?& F3 l- \4 @. s1 s
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    & g' C( _+ V: t$ h" L2 {% ^
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    , r6 y9 U2 D4 l7 ~" d
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    ; r+ r) P1 ^& J& p* f: Y  f
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);
    ! R5 `' ^/ T7 P. u! V% c+ L2 a1 S
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    : e. t1 y1 p0 [; E
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    : W& ^! S0 Y3 ^% h6 }) @) J2 `
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ( p" _2 S  |0 Q
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ( O$ C$ x) L- {+ a2 I8 _
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    * g8 \" ?2 U( g, n$ A7 @' t
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。
7 i: `5 U' u* C' S     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。