OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   5 ]2 E) f5 E9 s' U. K
2. /*
   . ^. j* c! V- b" W! S! t- l3 ?
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   / i' X  D' v. U) q1 w- S5 f6 x
8. *
   6 J) N" Q) U" D+ z, c4 L+ a7 ?- _
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ' E; ?2 G4 q# B/ x2 Y" F( N, T
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    7 ]$ s! j7 j& g
12. *
    , f# @% n8 h- R, c! X
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    . I6 [2 N0 c" ~2 w' m
14. *
    6 i; h, ^" }$ `4 e2 m
15. * This program is free software; you can redistribute it and/or
    * N* f. c: T3 h, g4 [
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
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.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    1 F8 o9 w' r. l6 ~8 h  F1 M" T
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    7 O& B0 z3 j, O4 r; _( K) d+ t
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    0 l* }/ Q. _4 ~( b* _
30. #include <asm/io.h>
    + l5 @* r0 G# Y! C+ w5 R
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    & N/ P3 D1 j& ]% K" `- y6 ?9 n& X& p
36. #include <mach/memory.h>
    * C* a% e9 n. u4 C7 r
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    # z3 i- e- r4 l, ]0 C4 s0 R
39. #include <asm/hardware/edma.h>
    
40. 
    ( v9 e3 O9 _$ l. ^
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    2 G. y! E: R+ E; }
44. #ifdef EDMA3_DEBUG
    2 z, Q5 ?& e( e
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
      }9 B0 q( Y; {3 z9 e. W8 L3 W/ p
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    * P" Q* q& T# {0 n) ~. h( g: C+ l
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    0 F: s6 F9 c0 |4 q* p+ ?
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    : ~( q, `+ v' J. l+ m
51. #define DMA_FN_OUT
    
52. #endif
    : V* c5 j; y6 a" o/ }8 ]! ~
53. 
    3 ~& L. b! ~- N7 [+ J
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    ! |/ A: E7 }0 _+ S) B
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    ' y) g+ }  @  g+ r* ^) k
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    , t( t0 h# L2 k5 Y
60. 
    . T. T" F( ~1 N# V8 P8 Q
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    ; v& L1 P9 T" D' R4 Q2 G
63. 
    
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);
    % P4 ?0 M  K/ d. Y# @
67. 
    8 d! r0 `3 i0 @% L/ n
68. dma_addr_t dmaphyssrc1 = 0;
    9 F, A0 W6 H) R: w$ {: O
69. dma_addr_t dmaphyssrc2 = 0;
    : }: B9 ^5 t( s& ^1 w
70. dma_addr_t dmaphysdest1 = 0;
    2 ^8 [( h& d6 C# ^$ Q
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    6 K0 I/ f, w: N# v0 l  k& q& A, L
73. char *dmabufsrc1 = NULL;
    ) w; y4 p( n' ^* c; s
74. char *dmabufsrc2 = NULL;
    7 F/ g' A( U% G: f' T# u- V9 f" [; \1 U
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    6 E0 ~, @" ]' @
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    7 j; C( r5 g; E" X( c9 `3 {$ g* J
84. module_param(ccnt, int, S_IRUGO);

复制代码

9 }# H6 t" R1 }$ H2 q" \7 ?
/ U7 T, B. g4 ]' J$ z7 \      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
* S3 Q0 z0 u/ m& H# c2 I9 p0 t8 @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。

$ F7 T! v" Z- r, i4 V