OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   9 ?2 ]1 `4 Q4 S" m/ g
4. *
   1 w9 f% {/ Q+ K7 ]
5. * brief  EDMA3 Test Application
   
6. *
   : u) e8 a. F0 [8 G8 M5 ^9 C
7. *   This file contains EDMA3 Test code.
   
8. *
   
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
    # r6 f' p+ P, b, {, x
11. *         TO CHANGE.
    , L' c) g* B4 k
12. *
    / P1 G7 X) _$ l$ U9 ^
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    * s& X' R2 z0 ]! k% w& v* n
17. * published by the Free Software Foundation version 2.
    ) e" A% }6 ^3 c* B  ^/ {4 j; f
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    . K( m! h4 P: B1 I
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ; D! f  B" V3 W& Q% |" k. T
22. * GNU General Public License for more details.
    1 L8 Q' f# c/ I' G$ L, L
23. */
    ! B+ F+ d3 E% ~/ C& W+ p  e! @7 t4 A0 [
24. 
    
25. #include <linux/module.h>
    6 [' f0 z" q5 Y
26. #include <linux/init.h>
    9 g  e' h" k0 Z2 I; V- }
27. #include <linux/errno.h>
    ( P! Z% W8 |# {- g
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    3 F" N7 S( {% t% K+ h2 ~" ~
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    7 C6 h# A2 U" [
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ' Y' E$ @7 N  @# i0 Z0 k
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    " a( @) ]- q; W3 F. c4 G
42. /*#define EDMA3_DEBUG*/
    * j5 c" z+ t2 ~, ]$ }8 @6 E
43. 
    " N4 l7 o9 L# D
44. #ifdef EDMA3_DEBUG
    ) R2 d, ]+ Y- K8 O2 N! N
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    4 c% z$ F. Q4 d$ k& O' A
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... )
      L. ~3 S8 d* a0 e$ q. u
50. #define DMA_FN_IN
    ; A& t2 `% _) m
51. #define DMA_FN_OUT
    6 y7 d; n4 Y6 H/ J9 v3 L
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    , g* R9 h7 v; g
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    5 ~7 i- c* w& k  M1 |( Q. ^9 f" d
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    0 U- I/ s0 h6 A; c; ]
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , h& s) g) v+ u# e( B$ G! N
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. 
    0 s" I8 s6 A4 j# x5 P
68. dma_addr_t dmaphyssrc1 = 0;
    3 e$ {! D: p: ?
69. dma_addr_t dmaphyssrc2 = 0;
    : w/ k  k# P0 z3 |( e# x
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ! T$ Y6 G* Q. [( b% P
75. char *dmabufdest1 = NULL;
    # y) H5 _: f  B
76. char *dmabufdest2 = NULL;
    * J" w7 F9 S' l4 Y" M5 I& o
77. 
    . }" p( w1 }# f% H
78. static int acnt = 512;
    2 ]: y+ p( V7 u1 A+ ]# ^% P9 U
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    % J6 r9 v5 s: ]. O7 U, _4 P
81. 
    & b, e/ i# `: d
82. module_param(acnt, int, S_IRUGO);
    5 R6 O  {5 r; m+ c# b) G
83. module_param(bcnt, int, S_IRUGO);
    9 H# e) f7 p2 |: [+ |
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。
! H9 E. M, q. L1 g, U3 A' q
2 q* L9 C2 r+ A) L3 U( S0 v' s9 A
2 N( A* F) G( |; F2 F