OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   * M! V" j  Z9 v5 Q
2. /*
   
3. * edma_test.c
   % B, ^) A. O1 }- B2 d0 u
4. *
   
5. * brief  EDMA3 Test Application
   3 K" N% i$ e/ c5 \& d# M" }+ e5 ~0 {
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   * b& e; e5 o' o* f! I
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   7 _  a8 f. S* L- `( S' ]% e
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    + o; ^$ U: S3 S  g8 |
11. *         TO CHANGE.
    6 s* {* s3 _! L' ~6 K' V; b+ ]
12. *
    1 A/ T/ A; u# a7 N) ^
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    9 G) ]" E+ x! e% l
14. *
    - @& d8 F% h' O$ L
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
    + x  h* I: s- z
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    % O' H$ l  t! M( G( j
22. * GNU General Public License for more details.
    8 ?; c# H( E1 u5 r+ \' E  |
23. */
    
24. 
    
25. #include <linux/module.h>
    + Z( m! Z' p/ m" ^
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    5 {4 e9 R: w. h% U
29. #include <linux/interrupt.h>
    " U5 s; R0 A4 E& Q/ o+ K
30. #include <asm/io.h>
    2 q0 L3 N0 q9 x, q
31. #include <linux/moduleparam.h>
    % N8 H( Z- o4 m1 N4 L7 _" }
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    * X5 Z3 ?7 X* J7 o) B
34. #include <linux/dma-mapping.h>
    . y7 ^1 l. S% k- }" G2 l
35. 
    + @  T- y* Q, _4 E7 [
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    " j/ J3 o9 `9 A5 X7 r
38. #include <mach/irqs.h>
    4 J3 ?% D% [" d4 U% T. Z
39. #include <asm/hardware/edma.h>
    * p+ q3 n6 ]+ Y8 _) \. J# x8 Z" }) L
40. 
    , u3 s: G+ f9 H5 u  p5 p" X
41. #undef EDMA3_DEBUG
    & t  ^) }& E. k3 b, D( w. s4 c
42. /*#define EDMA3_DEBUG*/
    ! {9 k  \, p9 S4 ^$ v- H+ G8 L
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    - N: R* U+ X5 ]8 s9 W; v) g* }
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    - V" O  b) K, v. m1 P% X; [
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    . E" h- o8 I& f5 [2 O/ B
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    ' Y% ]$ z" F1 M
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    * A0 B! s, a* v$ m0 L% P- M8 L! \
55. #define STATIC_SHIFT                3
    / O4 g3 H4 E5 x9 N, w( l
56. #define TCINTEN_SHIFT               20
    - T( I: r/ s& p: p) S; X) V
57. #define ITCINTEN_SHIFT              21
    2 U& v9 _& v' ~. P9 ?
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    7 v% H4 U2 d( Z+ t/ \6 ^
60. 
    % p+ S# k0 v8 L( m# q; \7 q; E, K; D
61. static volatile int irqraised1 = 0;
    # V% o5 ?- N( Q2 m+ y
62. static volatile int irqraised2 = 0;
    
63. 
    ) W  \: g# a3 S. B- ~4 O
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    3 z) q% v8 k8 O) }( P* y% L
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    0 n, O' ~3 b, l' Q
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ) `: c9 d- W0 b; ?
67. 
    , u0 t# E6 ?8 t5 Q; G7 `; m& d; J
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    7 o4 H! y, l8 C8 L' a3 \
70. dma_addr_t dmaphysdest1 = 0;
    & W7 x5 }4 D! K/ d: {
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    * h: n8 ^2 @' {( e) G
77. 
    8 d+ `1 t/ k/ ~6 C* v3 T
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    5 x# [% i$ L3 {9 f
82. module_param(acnt, int, S_IRUGO);
    ' u; k! u, X  {2 g, B
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

( M# x% f+ q) y. t9 C. ]- ]
$ P: U, Z! T7 d( D      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。