OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   - ~/ N3 D$ p( ^! n1 k, H& @
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   * `9 m' v5 ]5 D) u, l
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
    ; P. V% e6 y+ p3 ^" U
11. *         TO CHANGE.
    
12. *
    1 X  a# u7 I) b+ x9 g5 p
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    6 C$ D2 C4 I, D4 G+ z
15. * This program is free software; you can redistribute it and/or
    - I& z/ i+ f% U3 V& d; g, e& O4 d
16. * modify it under the terms of the GNU General Public License as
    ; b, _: v6 N! c1 H
17. * published by the Free Software Foundation version 2.
    " T  e! H- H0 q6 t4 y! ]) `
18. *
    , M: u0 W  `3 v6 p. C- h* B% d
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    6 }% t# d$ w7 c* ~& \
20. * kind, whether express or implied; without even the implied warranty
    + o; O! ?6 L  U8 b* n' [* l" ?
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    : R0 Y4 D$ w% J7 I
23. */
    - g0 L  F* l& H5 ^" ]7 A# I
24. 
    ) I- l, {% [. P# b5 u
25. #include <linux/module.h>
    " l( y6 p& H" L2 q) k  j  U
26. #include <linux/init.h>
    / d0 e" D- ]( ?9 w) z. k
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ( h2 r- ~+ |( z5 j$ T
29. #include <linux/interrupt.h>
    $ H5 A2 a1 G7 G4 z7 m
30. #include <asm/io.h>
    , {. W1 l( X, p, I7 C/ v
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    6 {3 k% c) X$ Y" L2 j
33. #include <linux/mm.h>
    ! _* Q6 K- P! H' c! T( J, V8 d
34. #include <linux/dma-mapping.h>
    " F3 R3 j( R9 O& O$ ?" l
35. 
    2 [1 g  p: x, o, c! ~. w
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    & w4 t! b0 b' ~4 [3 \0 x1 \4 @
39. #include <asm/hardware/edma.h>
    + f7 c" v- |7 I" |3 I
40. 
    0 c2 y4 m( y* _1 f0 g* y' v, g
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    7 Q- Q, D, Z( z
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    0 Z6 _# b2 v+ I# r$ F
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... )
    , ]3 b' ]7 C: r. g; C
50. #define DMA_FN_IN
    * O* t# h- f( u* m& x
51. #define DMA_FN_OUT
    
52. #endif
    + z0 z; J! f6 R4 K3 n
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    0 T- t& Q! F  L3 M
55. #define STATIC_SHIFT                3
    5 r/ e) U  u# `# E3 N2 _+ k$ v. H
56. #define TCINTEN_SHIFT               20
    ' p/ x, ]3 V* S, e4 _# ~( t7 G
57. #define ITCINTEN_SHIFT              21
    ) W( a0 p& |! R( F) H, o
58. #define TCCHEN_SHIFT                22
      [) |) ]' W0 y4 l5 k4 j5 B
59. #define ITCCHEN_SHIFT               23
    * ]8 O: A3 X) v
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    ! O1 d3 j) K' s4 ^
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);
    % D9 r& w6 H4 T. s7 G4 R
67. 
    # M6 s) S, T- H+ u' z. L8 H: z
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    & }3 o4 X' J8 q/ A  a( v
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    # ~" k& G0 @5 y) P1 x1 n* l4 f
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ( U) o, a. L$ V. _
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    - e$ B$ U% o& L; H* X) Q
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ; [+ g) ?1 w. v' W, U
83. module_param(bcnt, int, S_IRUGO);
    , Y# Q1 E1 Q) Y, Y, W4 l- {* v
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
! a7 C# t" {/ ]! j' }% {0 xarm-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。