OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   ! y& h) \& @$ y. J
3. * edma_test.c
   : U. Q/ A9 N, X. N% P
4. *
   
5. * brief  EDMA3 Test Application
   8 j5 B+ c! g" G! w" ^
6. *
   
7. *   This file contains EDMA3 Test code.
   # C6 f) [4 A' w' ]0 x
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ; U4 d) ?6 }: `- t0 t, X
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    + `/ }+ q9 f8 h4 I3 W
11. *         TO CHANGE.
    ! h# }0 a% _( S( M2 ]) z* i
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    + [6 F' T$ H+ G; F" m. E4 T
14. *
    
15. * This program is free software; you can redistribute it and/or
    9 L. o" U7 a' t% O
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    * X( Q5 ?/ E0 J1 k8 r
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    , {5 M( M* ?0 w$ l3 L+ V" G! B
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>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    $ e% j. A% |' C1 Z8 |3 I0 E& z. v
29. #include <linux/interrupt.h>
    6 v# Q' I7 I9 U- M$ W' m% L
30. #include <asm/io.h>
    : T! Y1 \7 U% g* m9 Y+ A
31. #include <linux/moduleparam.h>
    " N& }  e# R: W
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    0 v! w0 v7 M2 F8 h  [
37. #include <mach/hardware.h>
    / I( e! R$ _$ J5 r# @
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    - o5 j2 Y$ m$ X
41. #undef EDMA3_DEBUG
    2 }1 S* h# M) l  o4 u$ t+ I' E
42. /*#define EDMA3_DEBUG*/
    : e4 c+ v9 V. c, E( K" s
43. 
    9 \- y) Q; t6 L0 i7 P
44. #ifdef EDMA3_DEBUG
    
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__)
    + U9 o5 w- R& d. h) L4 O$ L
48. #else
    0 `$ U* D+ ^/ @& y
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    : [+ ^% t8 |/ D( k
55. #define STATIC_SHIFT                3
    ! e' u( E& F( W/ A  D5 U
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ! M9 U6 W, M3 K0 `$ e
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    . s7 K9 u( {& U3 Z
62. static volatile int irqraised2 = 0;
    $ ~* |/ K  d; c. O* E3 j; r/ x
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    + ^4 y6 L  ^: q: V/ @# z; T
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);
    5 B% z' Y4 L5 I0 s7 H3 T
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    ! Q1 k5 P. i0 c! j8 N
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    ; i0 o# c/ O& k) d# K. J8 n2 c
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    * ]9 Y& Z3 S; K8 I7 L$ M+ Z
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. 
    ( o' X3 F% M9 P/ f, M6 {
82. module_param(acnt, int, S_IRUGO);
    $ k/ j  U+ c+ o$ s
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

$ f$ W% u7 J! v- ]1 \" y
. ~% I- L( X0 j3 E2 ?& a      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
$ G) i/ [4 c: d' Karm-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。
/ F* b7 V+ ~0 w

7 L' [; f8 o+ E" {) h  W' Z