OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
     y" z# a  F# V0 Z) V
3. * edma_test.c
   2 C/ J* g/ Q; ], |3 {8 r  p8 a
4. *
   
5. * brief  EDMA3 Test Application
   # ^$ _" r  I- @& ^
6. *
   2 Z1 d3 Q. P# ^! c2 K- f
7. *   This file contains EDMA3 Test code.
   9 v- M% }+ v4 J
8. *
   5 b8 Z( l+ S1 F0 f
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   + s) G* Y/ L% `4 ~, b
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    2 U5 a3 H+ w  O
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ' M* G9 V  h6 _. S
14. *
    
15. * This program is free software; you can redistribute it and/or
    6 z; q! x% H- U
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
    9 u( u5 ?: D# U2 l
20. * kind, whether express or implied; without even the implied warranty
    6 s: K/ j& n! L$ k9 ~
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    % J  @5 I, C. q
22. * GNU General Public License for more details.
    $ I, F5 V4 q! F3 s6 V
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ' ]3 T! x8 `1 E
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    - i1 A0 x; ~( E: D0 v$ T1 L
31. #include <linux/moduleparam.h>
    , t  V; _5 J- B+ Q  P9 b
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    7 ?/ e; C+ b' N" S2 @, ~3 r
34. #include <linux/dma-mapping.h>
    4 D- a! N+ ?5 e( ]% f4 [
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    : M( R! V9 h9 }0 ^4 K- D; S0 ~
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    4 s5 X# _9 ^$ u
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    / V& p' \3 E+ N9 g- q$ o: G9 x
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    & g" H; W+ G$ q9 |1 N0 q
49. #define DMA_PRINTK( x... )
    % R1 x' [9 i& k8 i9 U/ F+ P
50. #define DMA_FN_IN
    - F+ i, h) R  z5 j  b
51. #define DMA_FN_OUT
    / G4 X* _' z/ p, B6 ^
52. #endif
    
53. 
    * F! p# K! E$ P, A7 d& c# m
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    * m6 Z- K& x# m. u" X& e
55. #define STATIC_SHIFT                3
    3 V) T! T, Q9 z
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    7 v% [/ w! M( m- d
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    , ]5 E1 b8 B& D3 E! d( q, k
62. static volatile int irqraised2 = 0;
    
63. 
    $ d( N9 A; R1 ~% t8 I; _
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);
    & p2 I4 |) z* z. I3 F6 J
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;
    . q* `7 q( C: H) p! B
70. dma_addr_t dmaphysdest1 = 0;
    ( T" l4 A5 Q$ M  P' t) J
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    - {9 G) c3 z5 d: Y# }" \
73. char *dmabufsrc1 = NULL;
    $ A& U  d: g8 W) g& F: Q
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    ! M* G& r3 L' ?8 U/ c4 ^9 ~
76. char *dmabufdest2 = NULL;
    0 Y# B. C2 l% c6 c; t3 S
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    8 _$ ]5 p$ a! N/ W. S
81. 
    ; i, h5 o, \0 p: T+ \& v7 S
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    % g# O7 s! S; U5 O. Z& }+ i
84. module_param(ccnt, int, S_IRUGO);

复制代码

% v# E- i# O! W+ |4 L
( j7 K, t! e) N4 x* I* B      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
# @" H8 s6 w! j4 X) J" Narm-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。
4 Y) _$ ^3 ?5 Z% b% q" t& l

$ ]8 h- V9 \8 Z/ P# L