OMAPL138如何在Linux下使用EDMA3驱动

yyj

  p' {- F( y3 k/ ?$ b9 C0 ]8 A9 b% o

1. [code]EDMA sample test application
   9 Q) s2 C1 {1 L( I' i5 P; ]
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   1 x& Z& P4 Z$ c. b( ^% {) `$ F  v
6. *
   ) }$ G7 I& \4 A! H, X2 N: ]% U% z
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.
    % O$ a2 X* ^9 L. a
12. *
      G# A0 ]" Q& k" N; O: @) l+ {2 [
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    $ `) b' F8 K, ^' @1 e
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.
    + w8 F  W" W3 V8 u
18. *
    ; }) x9 a6 `3 P& i1 X( P
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    3 B6 M# j% {( l+ v
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
      m1 h: E9 ?! u7 ^  \8 Z
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ) x& K. X4 z/ L1 j; M0 o
29. #include <linux/interrupt.h>
    0 _: k+ J' ?( P  ?2 r4 w
30. #include <asm/io.h>
    ) w% F5 g, Z. [: a; _) g( X
31. #include <linux/moduleparam.h>
    9 K3 @7 p, i7 M( y  H4 i0 }# l
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    * ^0 [' T. p  f% W) F; b! T! L9 y6 \  [
38. #include <mach/irqs.h>
    ( s6 a1 L. j) Y- G* T2 q, G, T9 N+ ]: C
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    ; Q, Y8 x( ~# }, x% q4 j" ^
44. #ifdef EDMA3_DEBUG
    - g# K4 O+ w% e! M' [: g
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__)
    / J- Y+ D+ N( s+ f7 G% ^" v8 B- @& e
48. #else
    
49. #define DMA_PRINTK( x... )
    % Z* D% J0 O# g* _) l, R! r- o
50. #define DMA_FN_IN
    $ d4 E! d/ G. |. v3 z/ S$ s
51. #define DMA_FN_OUT
    
52. #endif
    " T6 _5 Y6 s2 {
53. 
    4 H1 e2 a% u7 w% t" i/ K) q
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ' ^7 A# x& R, j7 H1 r* p
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ! W1 H1 e# t2 q& M6 Y5 z
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    & E5 ~/ Z2 @1 m* {, A- b
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    # f( J; a7 [( [% N" _
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , s5 y! ?9 i9 M- |
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    6 N0 h/ a9 E- V! d% o# ?' E
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ) {& m4 w% M* |0 ~0 y1 e
67. 
    : h4 Q2 p, r$ F/ _' ?2 |
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    2 g% O! f, O4 I- p
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    6 i8 N) |8 v3 s) S; r+ Y
72. 
    . K6 K9 f1 y6 b" S" s
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ' U* x  Z) A; N) f
83. module_param(bcnt, int, S_IRUGO);
    4 t+ l3 d7 X. Z0 T( f/ t
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。