OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   2 h. i* o+ L1 X0 h1 L6 s
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.
    9 u3 a' w8 n: l+ k
12. *
    $ l/ a. X6 ]5 p5 U
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    - c! n* w/ P% |% ~: T+ y
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
    
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
    ( C' ?0 Y* E( c8 R2 r2 C
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    % a6 w, ]# M. b: C1 M4 A) V
23. */
    
24. 
    0 k3 o. ~, n- B* V
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
      P7 b  N) }% Z0 f1 a' N5 C
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    $ _; b, Q" E  S) [3 z: J6 j$ h
34. #include <linux/dma-mapping.h>
    
35. 
    + U+ K5 [' w, A% `
36. #include <mach/memory.h>
    $ T1 I6 ]& l6 H1 |
37. #include <mach/hardware.h>
      U3 E) }2 B+ C2 d/ d1 z. u
38. #include <mach/irqs.h>
    $ {* W. M2 d2 N% {3 P: q3 b
39. #include <asm/hardware/edma.h>
    ; A' j2 {$ p) ^$ q
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    " B/ W, I# N9 V8 I1 Y+ z0 x8 K( s" a
43. 
    % a2 U# t; y1 W/ `6 t3 f
44. #ifdef EDMA3_DEBUG
    4 E4 P. P7 j% Z- k4 j
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    , Q; ^( `/ R. Q0 \- D
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
    : u2 W1 w: h  m9 M$ ^3 U; |- c% a
52. #endif
    : [5 C- i; }$ j( |% y: O; f! |
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ! l' k3 g6 S* q4 P  s( n: V) n! w
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ; g8 u9 a/ n+ i* q0 A- |
59. #define ITCCHEN_SHIFT               23
    
60. 
    ( n' H7 Q  {# F9 f; b7 G
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    # A! Z( w  k! F4 j
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);
    & Y2 o8 {2 o2 c9 d, N/ e2 V3 i+ @
67. 
    & s6 v2 `9 F4 h: b  ^- A
68. dma_addr_t dmaphyssrc1 = 0;
    9 V$ t! Q* P% G2 R  @( b' M
69. dma_addr_t dmaphyssrc2 = 0;
    3 W( n' P+ z6 S5 U' X  o1 Y9 k
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    0 J3 S& Z" |; y4 k
72. 
    * _' \+ l+ @& V" U3 b& ^
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    9 {. B9 c, d8 q8 q  }3 L9 _# K' C
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    & O1 a0 H8 K0 |; ^0 X( t9 u
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    ( O, n- ~4 X# O# \7 V# y' k2 X
81. 
    
82. module_param(acnt, int, S_IRUGO);
    : {9 a0 Y/ J/ g# K; d7 q9 ~
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
% g& @: W# r) {/ S6 S( varm-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。
: A. S  C& N! g8 W6 D     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

, e' W' Z8 A- j1 t, r