OMAPL138如何在Linux下使用EDMA3驱动

yyj

( |& H0 s& f9 p5 j8 G

1. [code]EDMA sample test application
   6 C7 P+ k+ E2 I0 d$ h! t
2. /*
   & J0 n  x( q6 M. U
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   " y) x# b+ Z$ L
6. *
   " C3 v+ Q6 C( ^; y
7. *   This file contains EDMA3 Test code.
   ! l8 R8 `3 t" t/ L$ V" ~
8. *
   6 v# [. m3 G, r3 n$ k) v
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   - P1 g, h  V" n4 q$ g
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    0 s* n( T1 I& [
12. *
    6 @- y" @  \9 j' G$ h
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    , W( j3 L# L6 J8 w6 I) @) X
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    : z! f" t" E' J! }" y) Z  t1 u3 k
18. *
    
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.
    8 ?! O% L* t1 H2 l
23. */
    
24. 
    
25. #include <linux/module.h>
    3 B% F# x3 ?9 P# r+ r
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    & k4 E' N. Q1 @( o2 M; R5 r
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    * }' A! Z- h6 u9 X. U6 x
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>
    ! }; ^' l+ h: m  B
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    % X) G5 u* ]/ u
43. 
    & H3 G9 v7 P/ h. j
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ) U2 c# Z3 m( D% a6 @
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ) Q7 Q3 ~) F* L9 d* _  \
48. #else
    : w0 Z, P) B& u/ ^3 ?
49. #define DMA_PRINTK( x... )
    & o& {: X; ^1 U- x
50. #define DMA_FN_IN
    ! K0 `( p- H% _
51. #define DMA_FN_OUT
    3 X- g( I# v: p. D8 Q
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    % y4 o8 ~! j) ^0 A2 u
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    & F! L4 c. b& @. f
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    9 r5 d8 R; C. O% C0 ]
60. 
    ; d# h  ]0 O/ x8 U& P. g7 M
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    ! L" b- t, j$ G, U( s
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' E" H7 y& ^* f, J" U0 b  s0 ]. {* x% h
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' f  X7 H/ o$ R7 j# O$ Z
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    . e& X7 W3 k$ h
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    9 U7 r" j# O9 W" F
72. 
      \6 y8 F2 K; P8 o2 F
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    : f/ R2 C  W. ]* G
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
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

      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。
& y( m& c7 K7 c5 u! W. X
( y& ~- g# Z7 F& T( N6 T