OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   - f2 ]5 `) C7 ^5 T' g
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   8 _8 t# p' W& o+ x) Y2 ^
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   : y2 z$ u4 d" ^& O
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    5 @0 D% c% L7 J5 {4 i
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    % O) Z: e4 @  w( C$ q
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
    
20. * kind, whether express or implied; without even the implied warranty
    : v& @% u0 [+ R
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ( e! {' N# H) p7 q8 f
22. * GNU General Public License for more details.
    
23. */
    
24. 
    8 A* Q4 O: W" J' |$ P; c7 ^- m
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    5 @7 j) S% _* H) q' \$ D
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ( o' s2 a! w& r) F- G
33. #include <linux/mm.h>
    ; o4 v. r* U8 F
34. #include <linux/dma-mapping.h>
    0 w# s6 t, J0 G/ s+ {- z4 H' g& [
35. 
    ! q  |8 b) M  z% o
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    # K. h6 E( Q7 m; G
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    6 e8 m9 {6 C& T! Y8 l
42. /*#define EDMA3_DEBUG*/
    
43. 
    - k% S5 ~6 X: U& h0 U
44. #ifdef EDMA3_DEBUG
    * X, H7 C) B4 R5 J) B, V
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
    & B2 @2 n8 m0 s* O7 {
49. #define DMA_PRINTK( x... )
    7 r- d& S5 [8 Y
50. #define DMA_FN_IN
      J4 E7 b4 v, I9 ^; L8 ?$ }) r
51. #define DMA_FN_OUT
    % {8 K( f2 _" c7 n% S, Q5 R
52. #endif
    0 Y; O/ \$ o' R% ^0 f) Y  K
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    1 Y( A. I6 o6 e% p$ ]
59. #define ITCCHEN_SHIFT               23
    
60. 
    9 \+ Y: t$ W; i8 P0 b
61. static volatile int irqraised1 = 0;
    $ G2 Q( y8 z# N
62. static volatile int irqraised2 = 0;
    - D* H9 y& ?2 Z
63. 
    / V- O$ K+ @4 Z0 Y0 N
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);
    7 J0 [- S1 s  Z# o  H
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    - z* {. r# s- c9 K
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    1 ~1 {4 b- M+ g9 F
73. char *dmabufsrc1 = NULL;
    ! a$ ~& P0 ~1 L5 Z
74. char *dmabufsrc2 = NULL;
    ) l- Q7 h  f. ?5 k
75. char *dmabufdest1 = NULL;
    / L7 {& V! r$ W& a5 W
76. char *dmabufdest2 = NULL;
    
77. 
    ) ]" H3 R$ W0 R6 m; d: l
78. static int acnt = 512;
    
79. static int bcnt = 8;
    + P  L9 Z. A1 N& v: l) N6 h: x* C
80. static int ccnt = 8;
    - h( }* V+ i% r8 \8 {% B" f
81. 
    + b6 c  O' J- Q/ E! C
82. module_param(acnt, int, S_IRUGO);
    6 S$ u# x; ?1 g
83. module_param(bcnt, int, S_IRUGO);
    $ d9 v; H4 U  Z
84. module_param(ccnt, int, S_IRUGO);

复制代码

) K7 H# l8 J3 L- z7 T* i
      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。
+ O& o% S& i# C! X" f1 l