OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   # E  ?6 z# U% V
2. /*
   6 R7 z+ T: q% \
3. * edma_test.c
   ( G' B. z4 f! c: Q
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   3 q# h& x) T7 P, X5 Y3 g8 E% w7 D( Z
7. *   This file contains EDMA3 Test code.
   0 U. V) ]* L% l1 s+ _, ]
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
     e. K, l/ }7 S! p* U5 i
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    * z# e1 i6 F5 M, D0 W
11. *         TO CHANGE.
    
12. *
    7 y. O# K7 n% q6 \, u4 Z
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    ! T6 a# R; f6 d
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
    
17. * published by the Free Software Foundation version 2.
    3 a/ J7 [# |# m# s0 s) j
18. *
    * p4 g! `8 u8 {0 L$ K
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    . {/ D: K7 }  t8 z
22. * GNU General Public License for more details.
    * m2 t+ ^$ w) O5 E2 P9 y
23. */
    
24. 
    . {  [" i7 p: d
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    5 L$ l% |- g' H  l
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. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
      j. ]& [1 }( |1 o4 A3 P
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    3 X* |8 E3 e, c% E1 Z& A  B
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    & }  W4 W# i6 k2 O6 t% ?4 S
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ; H* ]3 A! {' Z% l: h" O
48. #else
    6 d9 F+ l8 o# ?$ g4 M
49. #define DMA_PRINTK( x... )
    3 Q8 C. H; @2 J6 f; g# o: ]
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
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
    % `( @+ s+ p$ j: l  f2 {
59. #define ITCCHEN_SHIFT               23
    / C" C; A5 G  t* G( M
60. 
    
61. static volatile int irqraised1 = 0;
    / ]2 Q9 y' b  {4 r6 s
62. static volatile int irqraised2 = 0;
    
63. 
    1 V$ @% y/ ?+ k/ u$ h3 f
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    0 X! I$ a9 x6 V1 ^
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. 
    9 V1 o6 J1 O. ?. E5 Q% E5 d
68. dma_addr_t dmaphyssrc1 = 0;
    1 M! o4 f' s" G& G3 P& g+ E) B
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    ! R* u( ?1 h9 _9 Q( ~0 M9 h1 J
76. char *dmabufdest2 = NULL;
    
77. 
    ( _1 B$ }; G5 X) }
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    : B: ?% M& p9 d6 k
81. 
    
82. module_param(acnt, int, S_IRUGO);
    , v9 ^2 z" A& b5 V4 Z; _" Q
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

$ ^+ w9 z& @: q% f! [
      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
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。
8 k( e& m% f: s/ f% r* a