OMAPL138如何在Linux下使用EDMA3驱动

yyj

% X5 z9 {* j: g/ s4 f

1. [code]EDMA sample test application
   7 G( l7 s, U) p
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   4 c7 v( L/ c) ]
8. *
   , {/ `* E- F% |( L8 s
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   . v% m* j4 i  p5 {
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    - B1 q4 l) f  I* l! e, g
11. *         TO CHANGE.
    1 T9 k0 X* `7 S( _, [
12. *
    $ h! c: y$ y9 }- a) g
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    1 T1 B6 k( N# g/ `3 C/ ]
14. *
    
15. * This program is free software; you can redistribute it and/or
    1 r1 D! b" k/ O, I  g
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    * Y/ K+ C/ `5 K% d6 v5 {. c8 z4 k
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
    ' e* v, q7 [4 X  y4 z9 g
22. * GNU General Public License for more details.
    
23. */
    ( X  ], z; X4 J9 Q. m2 x( K
24. 
    
25. #include <linux/module.h>
    + V7 a- {' S: ]
26. #include <linux/init.h>
      m9 r: D# p9 T
27. #include <linux/errno.h>
    4 n6 D5 G+ q( B; f6 o, m
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    $ H8 |/ D7 _" W8 i1 u& B) N
31. #include <linux/moduleparam.h>
    1 X1 A) W8 d; V" ?
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    0 d& ~' p6 M( [
34. #include <linux/dma-mapping.h>
    % x+ _) _* n' ]% I$ Q0 h
35. 
    8 j1 T- C* n4 ^  B
36. #include <mach/memory.h>
    4 ^% a: N5 J, l
37. #include <mach/hardware.h>
    ) t0 I% F( g8 l& {' ~1 X
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ' a# Q" x3 c. @" l0 F
40. 
      x% E, i# ?5 T! u1 M
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    + I+ g/ ?: O7 e- U+ M9 i2 V
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    5 P  r! s& a6 @; U
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    $ B- A: W" o. R* e$ |% Y3 z
48. #else
    $ E" O3 G+ c( o' P9 [1 x
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ; t- \; }1 a6 z( \* D
52. #endif
    % V: w5 V: W3 J1 G$ B7 R% Y1 ?
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    . j2 @0 n* y  N
55. #define STATIC_SHIFT                3
    0 q0 x9 Y  h' d$ E
56. #define TCINTEN_SHIFT               20
    4 m2 c: t  s/ V: U8 R) A
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    2 ^8 K! b  k; s! h9 J( t
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    0 r0 B; o. k  n8 {; @
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);
    % X. b) e- G; _$ r  L" m0 t0 W
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    ) w) U$ ~; s0 `* S4 i, @8 A
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    ( d- h! r5 E% G' c( {/ P
71. dma_addr_t dmaphysdest2 = 0;
    6 S4 L9 Z8 b( C  R& g' z5 q: B& D
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ( m: V( w' Q. b" N
75. char *dmabufdest1 = NULL;
    1 j' f! A: [% m$ J
76. char *dmabufdest2 = NULL;
    ' O" i# z" d+ w5 n$ u
77. 
    # Y& n: P  l# ]& n  h5 L- g
78. static int acnt = 512;
    
79. static int bcnt = 8;
    & ^% r7 m/ q+ n; y2 G
80. static int ccnt = 8;
    6 p. i+ J. t6 v( p  E
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    + w2 [1 S3 y% l. i
84. module_param(ccnt, int, S_IRUGO);

复制代码

4 q5 |3 B9 ?2 X      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。


; S& n! d5 m  ?' V9 t