OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   9 m5 U9 o' O& v# x7 I2 D
2. /*
   
3. * edma_test.c
   
4. *
   4 i8 n$ d- s- x$ b( y9 W' U' K4 e
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   $ _* m0 R- l% y% q7 H" u2 e
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
    2 n' w' N* }! P9 }
11. *         TO CHANGE.
    ' k- L7 \0 P9 b: g: d" r( _2 O6 J
12. *
    , r3 V7 p' I" c. @/ u
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    # d! H7 B: O# T7 f
14. *
    & s: j1 o7 |- G' _
15. * This program is free software; you can redistribute it and/or
    . D9 n* Q6 N1 c- B
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    " L( D( m9 g, ]. [9 B# p
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.
    ! }$ Y( `9 B. [1 s  X4 p
23. */
    
24. 
    
25. #include <linux/module.h>
      B7 q  a. I; s( W! q  o+ G
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    & q& r) q2 d* @9 x. `4 Z. k, r: ~# w
29. #include <linux/interrupt.h>
    . m9 f$ y: W. u; C
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    ! Q: b$ u6 Q# I5 K( T. L$ I- d: g, R
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    * |: H# I9 \9 X# f, \& U
37. #include <mach/hardware.h>
    , q/ J! v) V+ T& v9 l( k9 L) D
38. #include <mach/irqs.h>
    & B3 g* n) O4 p
39. #include <asm/hardware/edma.h>
    6 b; O- b1 e- Y8 l" V' \
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    3 o; p4 f2 {! j' X5 |  N/ E
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
      k4 N: z  Y$ O& B) m# e
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    . h4 U# U: \  v8 K: x" Q& Y( a
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    & o2 e% ~& a7 u4 q
52. #endif
    
53. 
    " \4 h5 }" d& N: h/ F& E2 q
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    9 J0 ^. w; r, B
57. #define ITCINTEN_SHIFT              21
    1 f7 p# ]6 u% H2 s7 P+ _3 s
58. #define TCCHEN_SHIFT                22
    " Z9 W: ]% Q+ H. T; U
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    1 B0 H6 c& w6 p7 @9 N
63. 
    ' y/ I  D5 h1 c. t1 p
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);
    ' W) C& k; q( L* v" f
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
      K2 L# ~: Y2 d/ n# z0 k# o" |: q7 X
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ! m: E- b- W9 b* U3 n2 y! u, j
72. 
    
73. char *dmabufsrc1 = NULL;
    . H% }8 `1 e; |+ m! n& A4 U7 x0 m+ h
74. char *dmabufsrc2 = NULL;
    ! i8 N2 u- q# J( N& P( Y. f$ e  z
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    + w6 }  |& g2 S/ F# q+ ?
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    # b/ ~* E1 Y* G
81. 
    1 y7 g/ A* H# e3 e1 S& R
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

' y& ]) p9 Z& [5 Z2 r& [
, {1 E. B* I/ S; b1 E      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
' W1 I$ t/ n. b( X* f! Qarm-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。

9 J; Q" p" Y* R! y4 C& d& ?