OMAPL138如何在Linux下使用EDMA3驱动

yyj

0 q. u$ Y! x, @* k& s3 [* P

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   ' q0 f! n- m1 {  u6 D" f, t
5. * brief  EDMA3 Test Application
   
6. *
   & w; B9 R0 z+ B, X; Z
7. *   This file contains EDMA3 Test code.
   
8. *
   , N& |5 d# c5 \4 O) D7 ?+ Y1 X
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    5 q6 U' ^4 x3 A% s5 N
12. *
    ' g& w2 C6 f6 U" k: }3 @) [. X
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ( I8 [; N9 ^0 R; U
14. *
    2 w! r  T. o* q6 S- S8 j) s
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
    8 V& U1 U; r' \2 s" z) W; \
17. * published by the Free Software Foundation version 2.
    % f5 b' m1 ?: k  S. j; c
18. *
    . M' Y9 v" Y4 l3 h, S
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ! ~' b5 B  J* c' w8 [4 V
20. * kind, whether express or implied; without even the implied warranty
    ! K& }2 h- S5 \6 q& l; ]
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    0 {& c4 b5 ?# J: R' |# u  y6 ~
23. */
    2 T- ^2 U9 |1 @* t6 @; u6 N, G
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    ) @# E( e+ Y' d
27. #include <linux/errno.h>
    9 `- `& E' y7 R0 k, F' A
28. #include <linux/types.h>
    - o# g5 k4 k- O# a2 |
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    + s/ d4 N4 h( |; b7 n
31. #include <linux/moduleparam.h>
    % D; N- E; p% k8 u! l
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    7 T- s6 Y/ o) W, u
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    * W6 W' |9 `* T8 M" S2 q
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    ' N: y! r3 P6 [+ K  s2 e
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    0 J% z8 T- l/ n: f+ P
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    2 R+ x& C+ U, P8 _
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    8 j$ b  Y  e/ M; K% D
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);
    / k3 s; E1 j; Q: ~
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    * O2 a( s2 @& y0 u) B* ]
69. dma_addr_t dmaphyssrc2 = 0;
    ( q' p" C: |+ T1 m) U# N
70. dma_addr_t dmaphysdest1 = 0;
    0 U, W  G) n5 j
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    7 ~! l! K# w# |9 ^4 ]8 r- ~+ h
73. char *dmabufsrc1 = NULL;
    9 _# P; j: A. d9 F" _& U$ k% n# J
74. char *dmabufsrc2 = NULL;
    . e9 @* T% s" H* R
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    " P$ J( n/ s% h- t
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    & z# R+ w# ?0 k/ a
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    / ]9 w$ _$ d/ t& s3 U$ x9 H1 @
84. module_param(ccnt, int, S_IRUGO);

复制代码

1 I2 e# O) S# x* g      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
( X  M* t0 a6 Y$ O0 u" iarm-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。
- ~6 @+ F" q, H% D9 T! N3 Z! m
6 |. L1 T" Z) Z, M
+ F; ^- N* e# T$ T  j3 }