OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   - M2 N4 M+ ~* Q$ V/ O( P6 v0 E
3. * edma_test.c
   
4. *
   ! n* u3 K5 e% r$ B, w# r. m; h1 U
5. * brief  EDMA3 Test Application
   
6. *
   8 q- W8 N2 ^+ ^* J1 ~
7. *   This file contains EDMA3 Test code.
   0 _+ J, @/ Z1 C) O3 `1 k
8. *
   
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.
    4 f/ K/ Z0 Q4 H
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    : C2 P; s6 `: s# e0 c
14. *
    5 s# N; H- @# C- F" a- v, P
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
    + {3 O! a- s  b- J4 y) u5 S
17. * published by the Free Software Foundation version 2.
    + d, h+ ]. }/ v; K" X
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    - y. a: K: @0 @# w. r3 V. E7 Z
20. * kind, whether express or implied; without even the implied warranty
    / Q: ^) _, j" e0 N0 w
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    ; z' {9 b, V  D* R7 q+ e
24. 
    ( Q3 N: ^9 Q! }5 _# E" {
25. #include <linux/module.h>
    ( q4 O: {2 H6 h+ o$ F/ T. r3 n
26. #include <linux/init.h>
    3 w; F, |1 ~0 f7 v5 j- F3 c
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    0 a4 ?: t9 k9 h4 a
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    : Q& a6 I" p6 ]
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    : E3 E) K) P& j* z
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)
    9 e" V" j/ V6 ?0 t7 k
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    . W7 }. m6 H0 U, Z
48. #else
    
49. #define DMA_PRINTK( x... )
    8 a6 _* P9 G$ |. w, E, H
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    - ]" V9 n3 v3 e# P; A
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    0 _0 t: i, x4 |; R/ Q
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ; W, x; O; R% Z1 N( o
59. #define ITCCHEN_SHIFT               23
    9 ~( A* M, a! T: s- t8 L
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
      [/ V/ q5 }& m+ o
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);
    6 z; O- V1 v- l& G
67. 
    1 K" n' X, v' }2 l7 _+ I+ |
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    3 O5 ]" d3 J5 s3 ~
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    + Y7 J+ g2 q# R5 y' \5 q
73. char *dmabufsrc1 = NULL;
    2 ?* R- U( t  i" H% a
74. char *dmabufsrc2 = NULL;
    $ z; i; [, d+ d+ l: e/ ~
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ! O! f& ]/ o( t" M
77. 
    % p$ P5 Y6 H6 \' R
78. static int acnt = 512;
    : W! J2 L9 E5 a& x2 y
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    ; t, k1 O# j0 w4 U( m" x8 s
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
      D. g, \' y1 o0 N  J, z; C
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
( [4 S/ S( X* @4 a2 S- B( Barm-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。

3 g9 t+ P( K& c% y  }0 u
7 ~3 P4 g% @5 Y5 h$ J% Q9 E4 L2 A& n/ v