OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   ) H: [4 R( G5 X) u
3. * edma_test.c
   
4. *
   . J1 }3 |9 ?) P' Q
5. * brief  EDMA3 Test Application
   
6. *
   6 t2 n8 |9 U- ^' C+ s; S  P
7. *   This file contains EDMA3 Test code.
   
8. *
   1 {. S; q% B4 h3 _
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
    # J2 K0 R7 R1 r7 ]
11. *         TO CHANGE.
    & Z. q7 Q+ V# y) M9 j% Z
12. *
    * s& F- c; c4 V8 ]7 ~% W6 d! W, b
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
    * A/ q' K5 `  B2 H
17. * published by the Free Software Foundation version 2.
    9 P! j1 i) [8 ?" U1 v
18. *
    8 ]2 d+ Q( Q/ V; `
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
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    * o& \; v. A* I' `
25. #include <linux/module.h>
    $ P+ ?& ?9 \+ f
26. #include <linux/init.h>
    9 F. q9 Q( g$ ^4 H# z
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    # V* s: m3 q0 z3 \
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    & q, }5 a% i& W+ J
33. #include <linux/mm.h>
    4 b- r+ q& ?8 s$ i4 w
34. #include <linux/dma-mapping.h>
    # D8 X$ @4 V" d
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    " ]- f, \- |& Y6 l: Y, q  S2 `
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
      y. a8 C4 y5 N# V) m( P) R
43. 
    
44. #ifdef EDMA3_DEBUG
    ! |- J' w) h2 ?% @
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    & ~1 B, ^1 `, z2 ^
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    & g* t/ R* ?. g7 `9 R3 ^
48. #else
    7 W3 b' {" k/ E5 F/ n# s
49. #define DMA_PRINTK( x... )
    . Q& z( b/ h  }$ R- G1 k
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    + K" G8 N: O; R8 I+ u3 F1 ?
52. #endif
    * `" J; X1 h+ K( |* j! T
53. 
    7 _( t: ?: v& ~( ^
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ! l/ V( S# Z5 d# r1 U# ~6 m' p
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    / }; X1 l4 M8 m3 n- j" e! Y0 h6 b
60. 
    % I7 z4 q. f( M4 J) V
61. static volatile int irqraised1 = 0;
    ( J# B/ V# N" E, F- C& j
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    - X8 Q$ }* i3 e' I  s5 o  K
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' d- w% Z# ]/ F6 a* n( t  @
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    7 h2 A4 g' J8 f4 o
67. 
    / x- h3 K& c8 W. y' X
68. dma_addr_t dmaphyssrc1 = 0;
      M. }& M* @0 \6 j+ i
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    $ Z7 ?" K- ^' O1 a% _1 E" t6 [
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    - p& _) e3 v% p2 v% k# ^( \
73. char *dmabufsrc1 = NULL;
    7 ^" D5 W9 j6 `3 B
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    0 Z. g  p2 Y4 V; K; @5 ?; z
76. char *dmabufdest2 = NULL;
    1 T. p0 w6 v' C; U- K
77. 
    7 J% ^# \4 h; ?. _: J; {3 H) e4 Y2 f
78. static int acnt = 512;
    3 y) d7 p, \" Z* i1 r+ T
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    ! F! k( N; o7 A& C
82. module_param(acnt, int, S_IRUGO);
    & ?2 T; e9 @6 A0 c9 h0 h9 X
83. module_param(bcnt, int, S_IRUGO);
    4 u/ D) Y9 j; t% n: j3 U
84. module_param(ccnt, int, S_IRUGO);

复制代码

& U: a* ]* _. ?2 U      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。
, }5 A/ M6 u  ~1 d) `# b$ ^     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 D! v- ?- U0 w/ z" e) K5 C3 k* G- H
$ X$ t4 d2 j! R; |" M: c