OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   0 ]5 {0 s4 ^$ H9 C
2. /*
   5 s( A6 A* T, {; Z3 D+ x: q$ h$ E. ]
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   - X# j0 \/ X. e  x
7. *   This file contains EDMA3 Test code.
   
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
    
11. *         TO CHANGE.
    5 j# j' W( K0 M, e: B7 b, ~8 n
12. *
    3 v; J' x! t; n7 I" r: M/ r( V
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    * i; m5 u8 X. N3 P
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
    
17. * published by the Free Software Foundation version 2.
    % H$ i6 W% z1 O; k, A$ n
18. *
    " X  R5 _/ m# x0 }+ {
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    4 _- c& o; o; V
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.
    : K+ }+ \6 N' R
23. */
    
24. 
    
25. #include <linux/module.h>
    1 u, H+ h8 v" {- Y) H) K
26. #include <linux/init.h>
    ; U( y5 |; C- x6 e
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    $ ^& T% F- ?0 f/ P
30. #include <asm/io.h>
    " s) h/ W# _5 A: W: L1 U  l
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    5 `5 U; t7 v% Q# n! l
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    / ?" D5 L# }# _/ o# C
37. #include <mach/hardware.h>
    : R4 c% {2 u( [) i: @/ a* A# t, s
38. #include <mach/irqs.h>
    . H  M( u; D" V& |! i0 S
39. #include <asm/hardware/edma.h>
    9 f% V: M+ d7 ?' G5 a3 Y% @
40. 
    
41. #undef EDMA3_DEBUG
    ) U2 \: D- B/ V- j' S6 R
42. /*#define EDMA3_DEBUG*/
    : M0 m6 L+ [! {/ F
43. 
    8 _) W7 Z* t8 }5 A
44. #ifdef EDMA3_DEBUG
    : I. w# z+ z  X, z' i
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    2 C& @. ]8 h# e* g  u# U! O' x
48. #else
    ( Z( ]2 `. H8 V# |
49. #define DMA_PRINTK( x... )
    ( i* ~; y' y, \
50. #define DMA_FN_IN
    3 }9 t' G! \+ j  d8 y! I
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    * Q; H+ g. X/ D' u
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    - m6 d. j' t) ^. K# }6 f5 O. T
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    4 |1 B) ?6 K; y
59. #define ITCCHEN_SHIFT               23
    ' }( F+ J" r/ D0 ]' S2 k
60. 
    
61. static volatile int irqraised1 = 0;
    " x& @4 a7 j9 R% D$ o, x* ?8 Y
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & F# n' l  U& }/ \8 x' _2 ?
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);
    
67. 
    * e6 M" ]- ^7 g1 M5 e! e7 D
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
      T3 O: t+ W; i! C, K* h$ q) c
71. dma_addr_t dmaphysdest2 = 0;
    2 t1 M3 n/ f5 |
72. 
    1 p+ U, }- |2 p2 w" P
73. char *dmabufsrc1 = NULL;
    ) s# Z: k7 T; k+ l2 K8 `
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    8 x( T4 O% q+ e! B
77. 
    0 X- j3 U* n# B
78. static int acnt = 512;
    
79. static int bcnt = 8;
    " N4 k9 _1 ~; \% E
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    : b' `8 y+ V" O6 H# J8 h
84. module_param(ccnt, int, S_IRUGO);

复制代码

2 X  |5 B# _2 m7 Q- s$ S
' Y( p) K9 Z: X7 c& ]      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
3 k5 ?* K& n2 Uarm-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。
+ k9 w' ^; K* z2 \- V2 Q& p1 N     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。