OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   0 J9 X$ D5 i4 I
2. /*
   
3. * edma_test.c
   * P. P' [, ~  `9 z& }& C/ Z
4. *
   
5. * brief  EDMA3 Test Application
   2 `) \# {# a  \* ?
6. *
   4 x' H7 @6 R% x# c" _" l
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   / B( C/ }, O% _
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/
    " K" X, p; x+ D2 ^3 ~& n2 }' X2 n
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.
    , s/ @3 ~3 p6 o* w8 J  P* X7 z
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    6 {+ I9 G! b" A1 J5 E: A8 T+ {, H
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1 w( z* k9 |2 P
22. * GNU General Public License for more details.
    ( T& `8 c& U- F7 r5 L/ u/ H9 |
23. */
    
24. 
    
25. #include <linux/module.h>
    : ^6 W' l! K7 S' c1 W' U  x
26. #include <linux/init.h>
    3 ?# K2 {: Q/ J' |: M
27. #include <linux/errno.h>
    * y8 X% S) `( f% g( b& U* `
28. #include <linux/types.h>
    0 Y1 x2 i  F5 C, W; h
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ; v& E3 U1 _9 H1 {- a. t
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
      L5 l7 b; Z- v+ ]: D
34. #include <linux/dma-mapping.h>
    
35. 
    0 ]' F8 F" k7 [/ c, Y: g) h
36. #include <mach/memory.h>
    % m: i2 b9 y5 H3 t0 p
37. #include <mach/hardware.h>
    6 Z5 P! L9 ]& {; Y0 n  |
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    & K1 N6 ^5 u/ i* F) p. k
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    % [* a2 l% ]% X) i
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__)
    # d% s* B2 [4 N0 M0 A2 {& Q
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    * T1 ?$ o& l+ V8 ]2 h' z5 k0 [
49. #define DMA_PRINTK( x... )
    , S/ x) o& S8 q. s9 ^# b5 R' t
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    * v* D  n2 u. Z0 {8 Z3 T/ n2 h0 b; l# f
52. #endif
    
53. 
    . @7 [4 I6 T" ~
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    9 g- w& Y' b* Q0 e5 z
56. #define TCINTEN_SHIFT               20
    2 x% ~' y4 X# z7 U% i: t) u1 D5 ]
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    " ~* u6 X' l) U% E% w3 Y
59. #define ITCCHEN_SHIFT               23
      u1 S8 b, v5 Z' @+ M; X& `
60. 
    
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);
    ; o+ J. [+ O! v
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);
    : t6 E  J1 B; x! E9 m$ v
67. 
    # P  e9 v0 V9 t" G& N' |6 F+ x
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    - j$ s! A3 X0 c. s
70. dma_addr_t dmaphysdest1 = 0;
    * a8 x; a6 f3 m/ `+ i; u5 G
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    : A! ~/ X9 _7 _* s8 Y
75. char *dmabufdest1 = NULL;
    + E" n$ l, F$ `; t5 p0 Y" f% q- Z9 X
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

4 R5 h$ Y% ~  w* P1 T0 ~* {
( k6 a4 z; A! i- W