OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   9 a" l) k! N7 R2 q' q% g
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   7 J1 ]9 r6 `3 g  ]) R
7. *   This file contains EDMA3 Test code.
   % g. ^: W0 U7 y1 T& r
8. *
   2 p9 B$ f7 Q' S. {1 ~5 ^8 D
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.
    ( r9 {' o3 Z/ z7 ^7 W$ D9 ~
12. *
    % m( z: I6 \4 d
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
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
    % `3 x, r6 e) M
17. * published by the Free Software Foundation version 2.
    # Y! t0 @  _* f5 G
18. *
    : G, D/ H) j9 A6 X% U. w+ M
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ; U% ~  C: `3 R- b( g
20. * kind, whether express or implied; without even the implied warranty
    ) u' w$ A/ V! @5 o4 Z/ y3 r
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    " j# _" J; u3 L4 Q
24. 
      E  g8 m8 ]% c) L4 j+ f
25. #include <linux/module.h>
    , Z. P9 R, g- Z- s% N" z: E7 N( R
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    1 A4 n6 |; @- \. P) l, s# D
28. #include <linux/types.h>
      ?2 p; Z2 ]( c2 e) [
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ( e8 c' Y( @' C; }& B0 p1 R8 X
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    5 ], M3 H! ?) S
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ' H; R2 c+ b% Q0 D; y! g
35. 
    4 p) G4 z2 g" B
36. #include <mach/memory.h>
    9 K3 M3 N% V# U/ w$ i$ }
37. #include <mach/hardware.h>
      a8 p  T: ^) e0 e$ H0 l' E4 f
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    # @- @# M: b$ G
41. #undef EDMA3_DEBUG
    ! O) Y5 E' Y' e( W8 B& Z
42. /*#define EDMA3_DEBUG*/
    8 f6 l5 L: |8 r, u$ B
43. 
    , w' h, Y; t- H  l
44. #ifdef EDMA3_DEBUG
    ( l* r" l% Z( F2 ]2 ^
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    + A1 @: M0 r9 A
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    . D5 |& @& n$ n
49. #define DMA_PRINTK( x... )
    4 z9 ~* ^7 V# o) v9 h& ^, \
50. #define DMA_FN_IN
    ) W; t3 w0 ~. e9 \
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    9 W6 r3 Y5 Z5 r( G3 F
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    7 s2 L: z: T9 P  `. I5 l
58. #define TCCHEN_SHIFT                22
    * z/ P) x1 x: @8 {4 w' G/ H) _! r" L
59. #define ITCCHEN_SHIFT               23
    * [$ m  v9 R" I: K; f# v! H
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    . ]% w' ?' f& z" _3 H! C
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;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    1 r% o1 c" h9 {- H3 R) ^) N+ V) n
71. dma_addr_t dmaphysdest2 = 0;
    * e5 w& ?4 j/ k4 ]# P
72. 
    # w% O) |, ]! s( g* _  N' L
73. char *dmabufsrc1 = NULL;
    $ b. z! I( T8 I- Y' z5 B2 l
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    # ~# b) V$ R/ T0 g; v+ a+ E
77. 
    
78. static int acnt = 512;
    : E( c/ r( {& ~. w* W% b$ L& R. V
79. static int bcnt = 8;
    + W9 k0 x; }0 P  r: u5 J( y6 |
80. static int ccnt = 8;
    
81. 
    + m5 u8 }7 X6 ^% o3 Y/ I, ]
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    & u- N* O5 A1 N
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
+ f( x; w4 _1 [% g/ V* Y5 o" Yarm-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。
: C( v+ R5 j: ~2 B