OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   5 Z" f, R; w: [0 g  M  u$ c( B& }
2. /*
   4 v. [+ F2 W1 [' e! B
3. * edma_test.c
   . _4 v) L3 N7 A5 S+ r
4. *
   
5. * brief  EDMA3 Test Application
   5 A8 ^( t- y3 C- l5 t
6. *
   
7. *   This file contains EDMA3 Test code.
   3 C, Y0 m/ O' p, i, h8 G
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   . Y1 L: e% d8 C% }1 F4 f1 T
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    " V5 R+ ~& {: M3 P1 G; `- q
11. *         TO CHANGE.
    0 q( h9 q  L" t5 b
12. *
    % T7 ?+ E4 q, `
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    + R* f) s5 q0 o- D# s5 j
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
    9 A6 m: J/ m  d0 `! T/ v0 A7 B
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    8 m$ ]8 H4 B1 ?- g: s6 Y
24. 
    
25. #include <linux/module.h>
    + M3 {  L5 s( [! y2 \5 z
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    # t1 U5 U( K) p8 |% A
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    + Z) o6 ~# R9 ]1 p" R9 S& O
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    $ I8 [; v* f* l% ^
33. #include <linux/mm.h>
    8 q" U( N9 k- c# ]* a# _
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    . P$ K8 T( H3 ^
37. #include <mach/hardware.h>
    - u) C( P  L( _. `8 c7 b
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    . A! T& X5 x& [+ G1 H, Y
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    2 X2 Y& m1 g. y( O: ?+ M$ r
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    0 E1 E$ Q9 x% @+ \( C8 P3 ~
48. #else
    
49. #define DMA_PRINTK( x... )
    ) [3 t: w4 v5 n8 G9 M3 Z5 K
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    ) ]0 D8 f5 r! ^0 I; `" B3 Z4 {* k0 _/ S
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    9 h# K, a$ @" t1 t- \5 |2 n
55. #define STATIC_SHIFT                3
    : v6 S2 H- K2 z! d$ c
56. #define TCINTEN_SHIFT               20
    / v" A. ?) R  a8 N5 C( s
57. #define ITCINTEN_SHIFT              21
    ! q/ ?4 G! Y" C- F) g
58. #define TCCHEN_SHIFT                22
    , D9 k' s# Q9 F! ]6 J
59. #define ITCCHEN_SHIFT               23
    ( a5 m  s% F8 `% d8 W
60. 
    2 I9 p- K6 L" i1 Q5 @# u+ l
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    % \) u7 q7 K5 v: \5 ]! S
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);
    / p3 ?, |6 X- |) {' M0 U, m- K, |
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    - Q" B. e# a: u6 m% K: |, ]
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    / Y, H4 o( P4 I
71. dma_addr_t dmaphysdest2 = 0;
    7 |* S7 p1 d! A( g8 P
72. 
    
73. char *dmabufsrc1 = NULL;
    , q+ H; `1 B; T/ u
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    0 E4 D: j& _7 l4 @1 y7 p+ `$ T, U  M
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    2 g$ Q% ]+ f# S+ D. f' P
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    * }2 {4 G# t0 x0 }- J# T
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    + d# ]7 E' ]0 N6 Q. k$ U/ @1 d
84. module_param(ccnt, int, S_IRUGO);

复制代码

2 L, E6 I  p9 e
      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
4 a) a$ U/ E$ a6 K0 harm-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。
) r7 v# W9 R% O& n% N- b