OMAPL138如何在Linux下使用EDMA3驱动

yyj

& x; i  z' L) U. r& E

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   ) {. k1 c7 m% n. `
5. * brief  EDMA3 Test Application
   8 ]! ~+ q; Q2 K
6. *
   : k% H# H+ d- Y  S8 ~
7. *   This file contains EDMA3 Test code.
   3 _9 H  U* }$ z
8. *
   ; |# c/ q. T1 @% _$ v
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
    ! |, D% U, h6 j' J4 ^
11. *         TO CHANGE.
      L* O4 l9 `% M+ a) J) c# C6 Y
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 S+ x& K2 Y7 w7 q$ b$ H
14. *
    
15. * This program is free software; you can redistribute it and/or
    % y. k- l4 I5 h8 A1 P
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    4 P& v* \$ |% k! }* n+ x! E
18. *
    % s; Y3 Y5 D3 Y: H& A* i( w
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    * ~) L( x/ ?/ c+ O
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    . K# h) r  Q, ]" g# I
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    5 v5 T( W) \2 q; h
27. #include <linux/errno.h>
    ) U0 \" E2 ?6 H! h2 Z
28. #include <linux/types.h>
    3 U; R% d% L& ^, e1 K& C
29. #include <linux/interrupt.h>
    - ?& g; \. u3 a$ p
30. #include <asm/io.h>
    4 V1 Y: v' T; w% R; |9 [
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    " c4 s9 A3 Q9 u6 z( s6 M( X
34. #include <linux/dma-mapping.h>
    
35. 
    ! i/ I& U" |0 z1 z# P2 \& @* p
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ' G' {' v. J& K
40. 
    7 l8 Q1 o; X# |& T  q/ I. S2 e
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    ' Z8 [! J/ d" Q: q' F' x+ Q* p
43. 
    % T! I$ s+ k  c' }, l- u% [1 [0 e
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__)
    9 \; p8 C9 f1 `- K- b
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    ! z# f, f& @- D2 M, [
49. #define DMA_PRINTK( x... )
    ) A: i7 g  ?! G
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    : H7 D( j6 W' O3 ^2 S7 O
52. #endif
    : a0 x& c# s! X3 R* m- A. u8 z
53. 
    % P/ N, j+ b; q
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    9 i# y, C2 ?& H" [3 K! g; V4 t
55. #define STATIC_SHIFT                3
    " @% Y- Z; K9 V1 o: H
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    , H; c: S. X  @: x( b  L: u
59. #define ITCCHEN_SHIFT               23
    % B3 B  J! x# ^. g4 P# R6 a! B, A
60. 
    0 d9 U; o4 k7 f1 O
61. static volatile int irqraised1 = 0;
    ( j) ?- e1 d( [+ m. Q9 c6 Y# G
62. static volatile int irqraised2 = 0;
    . Q! b" Z7 l$ l5 ^3 i" ^4 C( U/ f
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : ?3 ?  R8 k: F' {$ G
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);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    9 o4 {# G8 X  ~8 t/ b- c- a' F( t
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    0 A  {" p; Z: Q( B
73. char *dmabufsrc1 = NULL;
      s" i; K  l4 `" _3 ], f
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    * O1 P$ H5 ?  I) ^
76. char *dmabufdest2 = NULL;
    
77. 
    + q+ k& a  F! a' M. c! ?
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    3 k! _) k' R- m- \9 Z
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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。
* n3 ?+ t+ B% u/ {/ O! j
9 W9 N2 O) c3 F5 _