OMAPL138如何在Linux下使用EDMA3驱动

yyj

* {: i0 V0 G9 w8 m4 {

1. [code]EDMA sample test application
   & Q& |* K3 ^' Y" O
2. /*
   * t7 ]2 ^2 p' T: S) E
3. * edma_test.c
   
4. *
   9 g9 L: O. x) O# v+ X
5. * brief  EDMA3 Test Application
   ) g6 ^8 U3 p1 N# l9 p  D
6. *
   % a4 E/ R/ r. ?: Z/ I+ U3 a5 O( M3 s( E
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
     b! [: V6 A, ^* l+ E
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    5 e0 a9 C6 D" R& X1 }" B
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    + S# A8 T$ c0 L8 J
14. *
    
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
    * u$ t# }/ G3 z. U1 i5 C5 I
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    1 \4 o- I' f9 V$ J
20. * kind, whether express or implied; without even the implied warranty
    5 M& Q4 E2 R* S% r) R! \
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    9 ^: ?9 @! p6 c* Y& n9 o
23. */
    % B7 `/ Y$ @# k/ _3 h$ m
24. 
    - D  y# R6 n- {$ g5 H* L5 H
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    + M! |7 j9 H* N* y. Z
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ( y$ Y4 d3 I# A9 c
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    6 |4 [' i6 n/ }' E, X& }4 O- I
31. #include <linux/moduleparam.h>
    + h1 j4 E9 H. l$ ~0 i( A9 h
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    ( `6 M0 \; J4 n8 V; G9 Y* }1 B7 Q
34. #include <linux/dma-mapping.h>
    
35. 
    1 a( l7 F) A) I( n# g" B, M
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    + q1 m' x( V! x6 w+ U7 t  c% O
38. #include <mach/irqs.h>
    5 I! k+ K$ P2 ^# r* f
39. #include <asm/hardware/edma.h>
      W' q8 `* i. [" n; A' a6 U
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    3 a0 s4 z1 I$ g6 E; p9 ^5 W' n
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    , x5 V: X( y7 B3 z3 I
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    % S! v5 R7 H' ~' _% a$ h
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    6 h' x7 h  f' J' `4 r  t$ Z. P2 y
49. #define DMA_PRINTK( x... )
    9 k& l' U8 Y1 ]5 F. K( ]
50. #define DMA_FN_IN
    # I( N9 X: V% I% \/ v
51. #define DMA_FN_OUT
    5 q7 T$ g: I4 j* w1 i
52. #endif
    
53. 
    # J3 f/ a* I* w# B! x
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    2 \) y* g  U/ |" p1 z( p, N
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
    , Y; Z; r  ~' C$ L' e& m
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    " ~$ y4 g0 u4 `; B0 e* k' g% x
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);
    - w1 W. Z& \3 O/ i4 j9 N- b: f
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    ( Z- Y7 K+ r- W% ~) e- V  S: t
69. dma_addr_t dmaphyssrc2 = 0;
    ; `. m8 f& r# M. T! ^# w- T
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    7 t* x/ h' u% |7 q" y5 u: b/ E
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    ( H: V+ N$ F/ D* m/ j# x$ ]% A, i: b
76. char *dmabufdest2 = NULL;
    & F7 |  W+ d7 I8 ^
77. 
    3 U" U$ o: G: U/ m% I1 V
78. static int acnt = 512;
    & L6 a" l! b0 ]0 g0 R3 d1 e
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    - K6 Z; \7 l6 E
81. 
    ; _+ v1 H- }; ]& d" ?
82. module_param(acnt, int, S_IRUGO);
    6 _: @; y/ v, f; i& m6 j( b% @6 }
83. module_param(bcnt, int, S_IRUGO);
    9 a$ z- b, Z/ X% W. {8 w
84. module_param(ccnt, int, S_IRUGO);

复制代码

7 j1 ?% L4 e4 _/ d5 M/ \$ ?
      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。
3 B3 S# B4 p3 l5 b0 i     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。