OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   % _4 X/ Q) _% L
2. /*
   
3. * edma_test.c
   1 o  g( D4 \8 q9 A6 [
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   5 R0 u- }6 W4 v% B7 }( g# }' u7 C, X
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   6 B% E# \- D) z  `/ E
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    6 E$ B9 e' s' f1 i4 D" s, o( J
11. *         TO CHANGE.
    ) m7 O" P% W" ?7 P0 {* c
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    % E* i; E( Z. W" I
14. *
    8 ]  `  q- x9 m
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
    6 F) t" o0 d9 i) P
17. * published by the Free Software Foundation version 2.
    + K) Z6 t- Q# ?. x0 q3 O  ?
18. *
      t+ F. s! Y3 g
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
    / H6 m' a, b3 G5 ?: ^* y# A: u
22. * GNU General Public License for more details.
    6 ^9 |) C  c: s) w
23. */
    
24. 
    
25. #include <linux/module.h>
    " q& x0 _$ ?# A
26. #include <linux/init.h>
    1 a: J: @  G; f
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ! @" g! {/ y6 M% }& ?) w( C
31. #include <linux/moduleparam.h>
    2 \7 u0 x' v. E- j+ s% z( F
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    ) f3 o8 \; g% x: N
34. #include <linux/dma-mapping.h>
    
35. 
    ! G" P9 O1 e4 a1 y! a
36. #include <mach/memory.h>
    ! [: h! u: Y$ r' J4 D0 x9 \) A3 d
37. #include <mach/hardware.h>
    8 ~* d2 y  @2 Z9 d* p- h$ O
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    * ^/ d) p/ y# k9 q( p, e
42. /*#define EDMA3_DEBUG*/
    ; l& z) }  D- ~- T
43. 
    0 J# ^  d2 p. Y. E6 R. `% q' R6 e
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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    - Q5 h6 R5 u; [/ T6 U
48. #else
    ; d* C( _* a4 H
49. #define DMA_PRINTK( x... )
    & G# g: _1 ?! N' S, I* }
50. #define DMA_FN_IN
    ( {9 n5 A  r: C( u; c1 V2 a/ g8 r
51. #define DMA_FN_OUT
    
52. #endif
    6 q% c% M$ t  F8 E: [
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    7 f8 z  [7 t& c0 j& _$ n% \
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    7 F9 w& }/ o# l- c+ s& N
62. static volatile int irqraised2 = 0;
    ; V% Q3 |1 O& Y0 H% D
63. 
    # K8 [3 [- m* |9 ^
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);
    
67. 
    9 G$ o, _) O9 f% H* H! f# o
68. dma_addr_t dmaphyssrc1 = 0;
    % g% F2 x; o. K  Q& F
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ; g9 H. s  I0 u  g, ^
72. 
    & n2 [* B. I! S  ?
73. char *dmabufsrc1 = NULL;
    . W, ~2 m2 r; ^* ^$ e
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    4 w! x% o& Z2 {2 J4 E
76. char *dmabufdest2 = NULL;
    ; I7 n. e* T$ U, X2 w6 F
77. 
    
78. static int acnt = 512;
    2 ^0 C5 J$ Y2 U  L$ w5 M
79. static int bcnt = 8;
    ) Q9 a- M3 x8 t* v8 l! W: x
80. static int ccnt = 8;
    
81. 
    ( E. r0 Y/ c4 A; o6 x' X/ \" ?
82. module_param(acnt, int, S_IRUGO);
    + L% f% @% c2 X3 F2 [) Q
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

7 f% r$ n* i) S7 v2 F; g
# s- \& a  S( v$ ^      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。
1 }8 ]8 M5 A2 P0 \