OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   $ ^9 D5 Y# \# ]. u: p- S
2. /*
   
3. * edma_test.c
   5 i6 ^7 X! U2 V) b7 k: R
4. *
   0 X6 b9 L2 Y  ~
5. * brief  EDMA3 Test Application
   0 f  _  W+ k6 W- g* F1 ]3 r1 H
6. *
   
7. *   This file contains EDMA3 Test code.
   7 g0 o% S3 Z: U, p1 O
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
    - |5 B& K+ i3 k1 x( x
11. *         TO CHANGE.
    # K8 [) v) e0 X, b
12. *
    8 g# v8 R$ `$ |; U- H2 |
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    . Y. e. O3 b: F0 L( U+ I& S
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    ( }! E- \" h6 T+ P  A
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    / {9 ~5 p+ }1 O) w# ^9 _3 ~) ], ]
20. * kind, whether express or implied; without even the implied warranty
    0 t4 I6 N1 P! b: J: G
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    2 C1 `" `$ T" q& ]
25. #include <linux/module.h>
    / S6 |; ?8 y. L6 ^7 l( m  c( w
26. #include <linux/init.h>
    + I( F! k( `- W
27. #include <linux/errno.h>
    % A- q, t7 x/ u5 t/ b7 K$ [
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ! d" I4 }+ s- ^: w4 j5 n
33. #include <linux/mm.h>
    0 O9 L: D6 ~5 z/ E" U( h( k
34. #include <linux/dma-mapping.h>
    
35. 
    6 ?5 d* F, ]3 H" c% v- r5 r5 M
36. #include <mach/memory.h>
    $ I" {( Z7 C3 y0 r, L
37. #include <mach/hardware.h>
    " e' y6 i  W" t1 t
38. #include <mach/irqs.h>
    : b6 p0 y. {1 V: ~. b3 m- i
39. #include <asm/hardware/edma.h>
    
40. 
    . f/ F! O3 t( N3 d
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    : L" X- ~7 p4 s4 b
44. #ifdef EDMA3_DEBUG
    : ?' i2 r! ~; M" T7 s2 h# J
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    , t8 Y0 U; Y# o- I3 ?. U
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    $ k5 w8 ?  w  U- n
48. #else
      e/ K$ t$ M* o( O  Q* M6 q
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ; ^1 k/ @! F% @6 b! p# y
52. #endif
    0 j+ K& P& E( k& ^/ ?& @
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    , `+ W; O! D/ t4 \* {
57. #define ITCINTEN_SHIFT              21
    ! O3 t& b" D5 g
58. #define TCCHEN_SHIFT                22
    " l$ [7 u- o* R6 W
59. #define ITCCHEN_SHIFT               23
    9 s3 X8 _- R* o; W
60. 
    $ J( t+ p6 \4 p# ^( H+ S6 d
61. static volatile int irqraised1 = 0;
    ! |  ^. G7 E7 Y# k# U, V. ]$ |1 u! Q
62. static volatile int irqraised2 = 0;
    
63. 
    $ V5 s5 {- U& N+ K- L
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);
      J) r1 G: L  O2 Y! W
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;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    ( D+ k+ \0 x6 z. c* i# i0 [0 E
73. char *dmabufsrc1 = NULL;
    8 e6 E6 o" K9 k! ]( L
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    4 m7 ?; L2 D- G5 R) E: \
76. char *dmabufdest2 = NULL;
    ! a, q7 j" d, m. f- E( a6 x4 K
77. 
    ' R' S% r$ x! o+ `  j6 K
78. static int acnt = 512;
    ' p' P* e0 M! z* d: {0 D4 O
79. static int bcnt = 8;
    3 S/ |! v. z6 }
80. static int ccnt = 8;
    , @. \; F9 g' P! O& Q( q8 j7 l) B
81. 
    - u' A3 D% q8 x( q1 @7 `' a
82. module_param(acnt, int, S_IRUGO);
    / K' k, [7 ^7 |( o5 d: r& r
83. module_param(bcnt, int, S_IRUGO);
    7 A: R/ m6 T2 ^4 N: a
84. module_param(ccnt, int, S_IRUGO);

复制代码

2 @' h& o2 _9 v: _' i* t! 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
0 s4 g1 k$ b- 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。
% S% Q% K. C/ R7 v) N) {/ c     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。