OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   8 ?, N# J3 c: f8 b- H1 P
4. *
   
5. * brief  EDMA3 Test Application
   5 R; t/ |% ~5 ]* N; T: k
6. *
   
7. *   This file contains EDMA3 Test code.
   * W6 S" N' H1 w. D. M
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
    & ^7 |: y& H3 _1 C' s  }* q
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ; y% U9 ]* ?2 G  m7 O- G
14. *
    0 c3 \6 K5 G+ N- P8 H3 q
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
    / C, K2 q  }4 d2 i' O
17. * published by the Free Software Foundation version 2.
    
18. *
    6 {5 c$ q0 n8 e+ P  _' ~+ d
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
    . l$ Y( y" h0 O; J8 E
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    5 s) C, }4 J$ B$ [9 _# D
27. #include <linux/errno.h>
    8 {4 W) g9 q8 {' C# N1 d6 _7 q
28. #include <linux/types.h>
    ( E  p& M  C( R, P* ~4 e
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>
    " A5 Q* z* G) D( t6 j+ ^
38. #include <mach/irqs.h>
    2 N/ e2 ^  G1 R
39. #include <asm/hardware/edma.h>
    9 W  V0 B  k- l* v5 q4 i  ?
40. 
    " t+ o) {8 @; A
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    4 F/ |0 N1 l" ~' L1 K+ o' _
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    # U" H$ n6 t' t, a( V
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ( `+ A% [+ {: j7 W
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    % ?0 U: N7 j: n; R% b! a
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    8 x/ E; v, D, r4 {3 o; E
51. #define DMA_FN_OUT
    8 J) y2 _5 U1 S! U" ~# X' C2 Z
52. #endif
      y* E& T, [1 b
53. 
    & _. Z, X3 u! q+ p+ z/ A+ |# k
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    / v7 m( V9 O2 A/ z$ p
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    5 z+ {) J& O0 z1 }, ]
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    $ [; c6 O7 l  ]# X8 p8 s
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);
    2 I" V; J$ ~5 L# c$ b. O, d
67. 
    $ U8 |9 G7 \% g% X. D7 h( k
68. dma_addr_t dmaphyssrc1 = 0;
      T. r( F- G! q5 Z0 c& z/ c
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
      @% a  l) z6 f1 y
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    1 J( [! M1 |5 q5 j) \/ {" t: h
79. static int bcnt = 8;
    4 ~; a0 x3 J* j( A. v# A
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    6 n! |. z5 a3 T4 m) D
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

: L3 @2 L/ n: n: Y      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。
! r  f# s+ H: |! s' Z; x& a     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

5 ?$ I5 u' g; T3 Q. e4 A