OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   % l0 F; l! L9 ]% R! I, Z; y
2. /*
   
3. * edma_test.c
   
4. *
   . ?" ~% Q# z0 J1 \2 U: n8 ]( v7 h9 P2 [
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   9 g& s# f4 t! O# u, I4 ^! R
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   8 r& G1 S$ W6 l9 q3 A' E
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    ( u0 B/ Y6 X0 }
12. *
    1 L9 q9 I0 n/ O# z! U' m
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    & a4 |! v# W( i
14. *
    
15. * This program is free software; you can redistribute it and/or
    ' e- \) X1 H/ Y8 K8 v' ]
16. * modify it under the terms of the GNU General Public License as
    % u/ ]* K7 c* i" G$ y
17. * published by the Free Software Foundation version 2.
    8 j% C9 u- }4 [; u7 a$ _
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    $ @: W/ t6 `: O' |. Y4 _
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. */
    ! ~  r" L1 [/ V( y4 |4 Y: I$ L
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ! _! i! ~7 v0 a1 Z8 e
29. #include <linux/interrupt.h>
    9 k  z, y0 |, X1 S4 J
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    ( |& r) U6 `8 F8 A
34. #include <linux/dma-mapping.h>
    4 i0 s& }) h, f% m* @
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ( H- ?' B0 a  q  y% u7 c( f. e
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
      g7 t" y8 X" E7 @5 X
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    ! v& ^. L" ^% q) x
43. 
    / p9 j2 s) @# o$ j& @
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__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    ) P  W, }4 Y8 C
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ; j/ `/ X( u4 x1 O& v9 f
55. #define STATIC_SHIFT                3
    - S- m( R( B  u/ h6 W: _8 v
56. #define TCINTEN_SHIFT               20
    2 v& O) p4 ?$ w5 D: ?, X/ m/ w
57. #define ITCINTEN_SHIFT              21
    9 t7 M7 q: \2 C4 U
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    . L: p) J& q5 \$ r4 S! R. d
60. 
      @4 {8 W* ]2 E6 ^
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    4 ^) g- z* t5 `8 e- J" V
63. 
    + K8 k$ Z) K2 g; X9 ]8 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);
    ! r* ^& y( e, |
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    7 y7 |9 V6 S9 T1 j% {1 x. _
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    ) k& d3 S+ r/ B4 C) J+ k% l
70. dma_addr_t dmaphysdest1 = 0;
      H+ I- _3 r$ W1 k! R3 F# @
71. dma_addr_t dmaphysdest2 = 0;
    7 Z& E/ G4 g# N
72. 
    5 {# P1 s3 h/ x- E  q6 P  H9 l
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ) ?# j0 _# c* J& q  z% P/ L
75. char *dmabufdest1 = NULL;
    ' g5 u0 Q1 W$ d0 o1 d1 h
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    9 D. v2 b* v- {8 f6 |
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ' @$ @* L2 k' z5 R+ L
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

% V# E$ `' Z( U, I& q" d      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
' Q5 d' [/ F. X, Earm-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。
, S6 p2 R! u1 f3 `     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

% r& p; F; ~/ T6 i7 [
" \' P6 q2 k: S5 g0 Z; a% M