OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   , V- }) n! O. q$ E
5. * brief  EDMA3 Test Application
   1 x- Y4 I; q6 \4 Z" E
6. *
   
7. *   This file contains EDMA3 Test code.
   , i. T: d4 o7 l3 W* k
8. *
   ( P) P+ J0 S6 D# `( [( M, S6 O
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
    ) ]1 g0 t/ L) y, }6 g& e
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    6 A& E4 A# p' c' i4 k
14. *
    " I, p- u3 A. h1 A  o" T
15. * This program is free software; you can redistribute it and/or
    6 t, t) ]0 \0 W2 ~
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
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    : W  U4 @- N; I3 \8 A2 |! k
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ; w6 t+ _1 c5 U3 ~% L- g* g/ Q2 k
29. #include <linux/interrupt.h>
    ; B8 X1 \+ Z  @# W: ?
30. #include <asm/io.h>
    8 i5 [/ q1 n- d: w, Z, S
31. #include <linux/moduleparam.h>
    : d4 c/ ^# b; j  r4 ?) `9 B, x' w
32. #include <linux/sysctl.h>
    % n+ b; C6 b/ F, X
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ) S3 C5 n0 d5 ^6 s
35. 
    " G% O1 S" S/ E5 N/ c3 ]6 t6 l
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    9 z! L0 Y! O# T& _
41. #undef EDMA3_DEBUG
    , ~# g/ Z) d' E1 y
42. /*#define EDMA3_DEBUG*/
    " S- l; y( J5 U% t
43. 
    ) y; o6 ~$ B$ @% o2 X
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    9 M5 t: [+ S+ U" H
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... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    * `: L8 d! J& J# l7 H- t9 a
52. #endif
    
53. 
    % R# k& [# m8 {+ ~; R# F8 @
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    6 P" h* A% e, N
55. #define STATIC_SHIFT                3
    ; Y! Q# P1 n+ P$ b) C2 G( i
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    0 L" X; p- z+ g) k& u2 N5 w  {+ g9 d
60. 
    + L- ?0 T7 @' f  u% U2 U
61. static volatile int irqraised1 = 0;
    ' ~! p+ h; \- A# B1 @/ A7 ~1 T. z
62. static volatile int irqraised2 = 0;
    ) ]" `. k" S4 p  E) i3 @
63. 
    + ^9 k5 ~1 }4 S# V! x* P+ @" r
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);
    - x; v* Q$ [, \5 ?
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    5 e# U* d& H) E4 R$ P
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ) S4 J3 g3 Z0 W# j2 }6 E
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    , M8 s! q: x9 D' L
76. char *dmabufdest2 = NULL;
    + J" w' Z/ J# k6 k. P" v0 P
77. 
      W% f: }0 ^$ s& f3 l
78. static int acnt = 512;
    & r7 I8 Y, I2 ]" h' k' ^
79. static int bcnt = 8;
    3 W4 k: v( ]- e9 ~" w: p
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    0 V% X7 v; N& E. K. @6 U- J
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。
5 n/ D) l# @! p& E- Z2 P