OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   4 N& D  n  r: A  h  A* a- D( |  n
3. * edma_test.c
   5 N1 R4 N+ l, ^+ }" {( p
4. *
   ( d0 v8 A. B" u: a- t3 f+ m. M$ |
5. * brief  EDMA3 Test Application
   
6. *
   6 L8 [" g6 s$ f- b; l
7. *   This file contains EDMA3 Test code.
   % p" g. R2 e$ c' w, X
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
    ' {5 ^5 ^; W% u% S6 [! \+ u$ |0 a' u3 |
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    5 y$ ]5 O" ?8 n8 {
15. * This program is free software; you can redistribute it and/or
    : O5 M8 d: u4 Q
16. * modify it under the terms of the GNU General Public License as
    2 u( M' t6 Z0 A$ a% O! [
17. * published by the Free Software Foundation version 2.
    0 \3 F. }* y4 I
18. *
    4 }9 R3 c9 I- B. p
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    6 h8 f% n* n/ B9 G
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    - e6 l+ q" x" W' g- a" z
24. 
    # Q" v# M% }% K; f! j0 z' p! L
25. #include <linux/module.h>
    4 \9 ]: n  W7 e( H
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    ! H3 k* g% v7 U* X
28. #include <linux/types.h>
    4 H$ {# X% L6 ]3 H
29. #include <linux/interrupt.h>
    0 n! _6 E; X& L: }! X
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    + P; s+ I, m& y* |) u
32. #include <linux/sysctl.h>
    - |( R$ X+ F# f# H9 {, Z2 L
33. #include <linux/mm.h>
    - l  }4 s8 a2 F. ~$ W( s$ C3 s
34. #include <linux/dma-mapping.h>
    ; O2 D, x7 m. Z  ~# ]
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    0 T2 F6 V' V1 r0 y1 F+ y8 h# ^
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    . ]* A% ?9 v9 G0 `# X
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    - T: P: y' H8 U0 k$ m
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__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    . Q% x! P6 A$ S, d5 ]+ F2 l$ J
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    4 U. |. S. H5 y/ U* K
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    2 _& X  w0 ?# ^
61. static volatile int irqraised1 = 0;
    / q. }' f$ T& J2 f$ l
62. static volatile int irqraised2 = 0;
    ( B- d. u: ^; H/ p
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' P/ }7 F, Z0 H' P4 S, \
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. 
    1 p. i, K( I' f! z
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    ; o% Y$ ]; p# ?( q* s
74. char *dmabufsrc2 = NULL;
    ( I% K1 e- [' m& \: I1 |5 l
75. char *dmabufdest1 = NULL;
    " b* S; N: h+ [2 N/ t! a) \
76. char *dmabufdest2 = NULL;
    ! n8 r; E; _) F2 t
77. 
    
78. static int acnt = 512;
    . k0 t# X4 g, X# Z
79. static int bcnt = 8;
    : D( Y5 a- G# H4 X
80. static int ccnt = 8;
    . R, n1 |; o/ U; K8 Y! R
81. 
    
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

8 f! J8 S; m3 \) X# ^2 B
3 }& @5 r2 i0 G5 U5 \  q      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
0 r1 u- Z* }, Z9 e8 x& \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。
" M# ?5 ^9 [! u8 d2 i3 J/ ~; [$ n