OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   2 w7 b' H8 T2 y
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ! i) l% G0 _- v0 S# X0 p8 \
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    % h0 n; |8 L$ r5 h. m
12. *
    6 i, ?9 {6 v9 }8 p
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    " f  i: n4 R8 A  C
14. *
    $ c- f2 W8 C% k# ~% |/ F( X
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.
    
18. *
    * r4 W& E7 j3 Z. q/ _( @# E
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    0 J1 _! f" x* [2 n  Z
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    7 E1 d' C4 w: O& F; ~9 z; U
22. * GNU General Public License for more details.
    
23. */
    9 N2 a  q9 W* f; s8 y
24. 
      M! Z7 h% Q! \% U
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    # h3 x: {- Q  H) h
28. #include <linux/types.h>
    . n5 M9 _; s4 x$ |- V2 W& i
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    4 Q8 ^! c, K( E
31. #include <linux/moduleparam.h>
    " C: v0 W. h6 @6 V; Y- a
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    2 Z7 I. j5 h5 U! S) ^3 d
34. #include <linux/dma-mapping.h>
    
35. 
    ! q4 Y, B1 f( T& Q
36. #include <mach/memory.h>
    8 p& M8 p& U3 C( U
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    / d; l; O% u# x1 {+ I
40. 
    3 \  Y; o" ?/ L$ W9 S
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    ; Y+ S% K0 ?+ L% Y1 d
43. 
    
44. #ifdef EDMA3_DEBUG
    " I! Y& A  z. w; I7 y
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    6 f% t. d! B7 Z4 X
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... )
    
50. #define DMA_FN_IN
    $ w0 q$ y4 h: R
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ; S- j; U; o$ V8 J' X
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    0 x/ C  x( s* @$ ~
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    0 L; u% |- S  B. I1 p/ q' M4 W6 H5 j
63. 
    4 `. y+ [& F9 O- z7 A& B5 _2 _
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    $ b4 y7 ?) l5 e# w
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    7 m% \% q" V: j8 A2 @2 z- S
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    2 D' ~5 l6 E$ V+ a- @
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    7 L7 s$ a- H) p3 |. Q
71. dma_addr_t dmaphysdest2 = 0;
    9 N* f* Y+ K# P# ~" U
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    4 e8 k3 m% H3 s3 p, r' ]
77. 
    
78. static int acnt = 512;
    # p% p+ R' p- z- x7 E7 r
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    * W8 }' P0 W5 Q# E& i. l7 B6 }
83. module_param(bcnt, int, S_IRUGO);
    : h5 A; S" X% Z
84. module_param(ccnt, int, S_IRUGO);

复制代码

" q& K, V4 H0 e6 Q/ M3 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
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。
8 n$ h& D; h8 m9 L1 H; x- v     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

* n1 S0 ?( y5 F5 k6 n9 `$ {