OMAPL138如何在Linux下使用EDMA3驱动

yyj

; s1 U) Q6 s2 K: [

1. [code]EDMA sample test application
   " P9 f- e2 D' c1 d" r# _# o  e4 F* f
2. /*
   
3. * edma_test.c
   # Q# ~5 |8 {- y
4. *
   3 ^, ]$ I$ {- q: Z: W9 d
5. * brief  EDMA3 Test Application
   4 {' u. Z# h4 x" s# J+ B/ e
6. *
   
7. *   This file contains EDMA3 Test code.
   5 P8 I2 Q1 \/ W2 P1 Z$ ]
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   , c' W: W5 n4 d
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    . G+ \3 T) j; j& c& Q# y" R
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    : T6 [4 I/ K' D- M& `. O  m7 f
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
    7 W6 O* H; [' H7 B- P
17. * published by the Free Software Foundation version 2.
    3 y. f3 ?: e/ y9 D
18. *
    2 Y% X, B0 M$ d& Z. j& K& s
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. 
    
25. #include <linux/module.h>
    + e$ l5 t! I, x4 b% ^# K
26. #include <linux/init.h>
    ; b2 i0 c6 s1 L; M5 p( |; A
27. #include <linux/errno.h>
    . P$ r$ H* n4 v7 {
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    , P% p3 ]6 h! Z! E! V2 C. d1 W
30. #include <asm/io.h>
    1 D& ^5 d  `# \: u; n8 l, W$ Y) P
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    / K7 t( m; f2 B+ V( J) i+ L; z
33. #include <linux/mm.h>
    - V5 P! X0 O/ |8 p6 z8 K
34. #include <linux/dma-mapping.h>
    ! M2 M" O3 b) ^( c6 `
35. 
    $ n( P3 U8 E0 A* s# ?9 T. M
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
    8 e6 h% m3 @  o4 W% U
42. /*#define EDMA3_DEBUG*/
    
43. 
    , H7 y% g2 g! c
44. #ifdef EDMA3_DEBUG
    9 e6 Y9 m. }0 f1 Q
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    5 X% ~* Q: E6 `* Y
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    7 b" \& g9 U$ @5 A
51. #define DMA_FN_OUT
    ) \- U1 U: P% y3 C# N  L
52. #endif
    $ S9 n) H) e' ?/ y# a5 @2 T
53. 
    5 q/ Q$ v# L! Z: t# ~. v! W
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    4 d1 b" S& J! U  p
56. #define TCINTEN_SHIFT               20
    ( E5 w  f0 M* j( V; Q4 @
57. #define ITCINTEN_SHIFT              21
    # Y" C1 n( K, t& k9 p' O
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    % o( K% p0 f# W/ h! [. K
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ! w: E0 d  p* m& I2 \; ?  a8 X
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    . {8 S8 E' ^9 n# F2 O: k9 |1 Q
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    4 C5 [& \5 @7 ^! s
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
      N1 y$ y1 @+ m0 q
70. dma_addr_t dmaphysdest1 = 0;
    2 }* [( Y0 H$ a; X0 |
71. dma_addr_t dmaphysdest2 = 0;
    3 a/ P2 a4 L6 P* `
72. 
    ; t! @! \' j$ X4 F4 \$ S1 ^
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    0 \& I9 z1 c3 _
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    , l/ G, P/ r. v, t( p' f
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    5 G* |# B7 @' r3 O  J
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

( M& q  w( ^* t' q$ T/ \      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
. s6 e$ d  a& r% \( X& Aarm-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。
! O/ Q& [1 f" G7 \; _+ c4 R/ s     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
, p' c, E8 Y2 W. j' _