OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   4 _: F# z6 p' P
2. /*
   + [0 ]( }8 I  w+ X2 ^: x& o
3. * edma_test.c
   9 B7 e' o  ]# Q8 `3 B. O
4. *
   & B7 c# h: N) Y4 r5 C
5. * brief  EDMA3 Test Application
   5 O3 _- j' G3 A* I" c
6. *
   
7. *   This file contains EDMA3 Test code.
   0 J* P9 f! e1 G1 e, f. n
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ( q2 g7 d  a4 V2 L  K6 Z/ G7 G
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    1 W# G) t! y5 X# y7 B+ |
11. *         TO CHANGE.
    2 a6 C5 d8 c1 X: L8 b+ e7 m
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    2 W: {" y# ~+ v( Y( K2 a, f# t
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
    1 p" b; X3 N$ K8 P  H; X+ L
17. * published by the Free Software Foundation version 2.
    6 Z; i9 M5 `! ^2 T1 f$ [
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    9 a) D/ m% b$ |) P+ r
20. * kind, whether express or implied; without even the implied warranty
    $ E/ t9 ^" L: s, e' d$ i! i  q
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    6 D8 S7 J" y5 L/ Q4 w% e' H( Y
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    + B* w7 R9 O% g2 ~
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    & q6 k4 u7 H0 r* H# L  B6 {& l8 i
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    3 I  d) U  Q/ a7 G" e2 N, |% s
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    ; d+ V9 M) W3 ?' W4 F# J
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ' L2 n/ r9 W( Q" {6 A$ p
40. 
    & [( r) Z. u# S& S/ w5 d* N* I
41. #undef EDMA3_DEBUG
    ; O5 G0 g; W) e' o7 t/ H
42. /*#define EDMA3_DEBUG*/
    
43. 
    * F% n) ?6 p, V4 n3 J: b7 v
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__)
    : g  Q$ @: f+ V/ ?! h9 N
48. #else
      ]/ f2 E4 ~. M% e+ [
49. #define DMA_PRINTK( x... )
    ! w, o0 N1 \7 r- a' S1 t
50. #define DMA_FN_IN
    : v  M3 q% y* F2 f
51. #define DMA_FN_OUT
    
52. #endif
    5 _' M& i" h( B) s$ m7 c9 R0 q
53. 
    * p4 [- H" h; f# x- ^, ?1 N3 x
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    . Q  _+ w- u5 t7 s1 Q
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    8 H$ d9 o* v) r$ Q5 c) x
59. #define ITCCHEN_SHIFT               23
    
60. 
    . l5 f/ m1 Z* S/ W
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    3 |' R! h$ a$ G: M
63. 
    3 h. {. K  q5 A! N. b# {
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. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    8 L. y6 a- G2 C+ K3 o
72. 
    2 O% X& Y) j, A; J, l# J
73. char *dmabufsrc1 = NULL;
    , j- m. }7 @7 e8 ^9 z- V
74. char *dmabufsrc2 = NULL;
    " ?* _  O7 q; A
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    - v7 A7 b) f! ^4 C5 C
78. static int acnt = 512;
    
79. static int bcnt = 8;
    * m1 T* t# |: p  n* ?7 C' H. H
80. static int ccnt = 8;
    
81. 
    * }* V1 {7 X% y* {
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

5 n, i, v9 N0 W8 U& n      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
- l$ q$ q: h: L2 G. T( s: b: C5 Parm-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。
8 [4 Y& m+ W) M6 g     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。