OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   ( N' K0 G8 A6 B5 ]( e/ j$ ?
4. *
   + @% u# n4 }; D* o* c* g
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   % B7 Z& c9 v# o4 ?0 Q
8. *
   ! k$ @% {& Z( r( E# k! a1 f9 F
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   5 R- j4 G: {/ r9 P. L# H
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    / _  L/ X) b7 I0 a+ ^
11. *         TO CHANGE.
    ( ]; ]7 p/ J& z% d
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
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
    5 o% f* `# a) b
17. * published by the Free Software Foundation version 2.
    1 k2 X# G7 ?: }7 H- ?
18. *
    $ a9 i' U2 k" B$ z. x( m
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    # a$ p3 u$ E1 m# Y
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    : U' ~% i7 H8 |6 i. r
22. * GNU General Public License for more details.
    
23. */
    
24. 
    & R& U' X& u- y- c- r1 F/ \( K
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    . z* R" d; k/ ~& J0 R
27. #include <linux/errno.h>
    , u- d  A. S, K" ~# a% Q4 k
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    / p4 G  v* `, y6 p
30. #include <asm/io.h>
    & I- f, o/ G- e( a
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    1 Q+ Q# ?  \4 W* a
33. #include <linux/mm.h>
    3 {; s5 S3 U9 ~4 E
34. #include <linux/dma-mapping.h>
    
35. 
    0 L* K- R' r/ v5 K' n
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    % K! I9 \$ N9 @; j' s( Q) i5 g
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    6 T! U  b. X8 \& [/ P' 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__)
    3 B  k6 [  I9 y/ N6 ^3 `" n
48. #else
    / X* {5 ~7 F( X
49. #define DMA_PRINTK( x... )
    2 L; j, d5 |6 u1 A' x
50. #define DMA_FN_IN
    3 l: W& [. K, T( d3 U% d
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    - N6 c& O- F2 Z
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    4 T$ ^  W, f& B' H
55. #define STATIC_SHIFT                3
    1 n5 |8 B1 P6 P* B$ U" e
56. #define TCINTEN_SHIFT               20
    2 X" k% [- x8 M% F9 `4 M
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    7 ]$ A+ ?" Y* G9 ?! n! d
60. 
    " \( u$ {$ n5 x6 X( Y
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    4 u# P/ x- `+ Y- l( ?8 v& A6 q/ D
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
      T% ^1 N. \" X
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ) p7 |! i+ H& w/ D. u! W8 J* w$ S
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ; l, Z+ y7 M+ h7 J' O+ s
67. 
    / [# @5 V1 o! A. _7 Q# J
68. dma_addr_t dmaphyssrc1 = 0;
    ' \% z7 u4 M( g, C. d! c* a
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    $ \1 L4 u- U3 W# }( F
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    + o3 p1 y( S. Y* X4 ?& L
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    ( ^9 k7 o* Q4 n' f6 i: R$ ^
76. char *dmabufdest2 = NULL;
    ' H' H* C: r# |: f2 c. q0 |
77. 
    " B( y; T4 A* [6 Y
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    : {9 f5 c0 R5 E. Q9 f* f
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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
! Y) |6 J( F( `2 _* r( P- 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。

* u9 w# V2 X& Q! X