OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   ) F  W; A. J9 ^
3. * edma_test.c
   6 w6 A) l! T0 n; y
4. *
   
5. * brief  EDMA3 Test Application
   . [  ~# z( j" I) t* P8 f
6. *
   
7. *   This file contains EDMA3 Test code.
   - d( i1 m3 v; J/ E0 Q9 g! f) n' Y
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   & X$ P. D: W/ [
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    , {. N3 v+ l0 ^
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    1 S* p  ?& D' z4 F& B& B
14. *
    $ X) U& q  U9 q
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
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ! u$ [, J7 i9 s( m2 d7 J3 H
20. * kind, whether express or implied; without even the implied warranty
    , j, h& W' A5 @! i
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    7 i2 }+ ]2 x) h+ G; D
22. * GNU General Public License for more details.
    
23. */
    
24. 
    : Z% B2 Z; ~# E8 y0 i
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    3 r( s# D1 N. `8 O+ L" Z! v
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    ! L; Q' I; b# `, T# @; S
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ' ?3 o3 K* Q2 S# D6 H
35. 
    
36. #include <mach/memory.h>
    / m( P6 C& e: L$ q8 R6 \9 u
37. #include <mach/hardware.h>
    1 Y, G; I4 j1 j- T5 q
38. #include <mach/irqs.h>
    ! Z3 Q7 a& G  |- }5 U4 Z
39. #include <asm/hardware/edma.h>
    
40. 
    5 X) u) b% n6 u0 ^4 `$ r& [
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    ; n  i+ E- [' X. R+ K
44. #ifdef EDMA3_DEBUG
    ) ^2 m% F4 {# y
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    8 o% ^  H- U, Z. t) I- H: h
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    9 c+ T& F+ ^& J
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    9 _+ z# t# l) {# m
51. #define DMA_FN_OUT
    1 v+ U! }8 O0 Y' ^
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    , f- x, u$ F3 X  @; Y/ ?$ R
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
      D  x$ G' Z0 V% |
61. static volatile int irqraised1 = 0;
    - u$ t  z# A2 W2 D
62. static volatile int irqraised2 = 0;
    ) t5 q7 k7 {1 x; y8 H0 Z1 E
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    / D1 b+ [( w. v, [; _
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ; i7 y7 w- I3 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;
    5 D9 X0 L6 r: R+ j( t
69. dma_addr_t dmaphyssrc2 = 0;
    7 _6 M( V/ E4 v
70. dma_addr_t dmaphysdest1 = 0;
    0 K& g6 w7 o. Q9 n, @
71. dma_addr_t dmaphysdest2 = 0;
    " q* p! T  @' A
72. 
    . R: b3 q$ f0 \% v( U6 P
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    , J% M6 ^9 [! T% `
76. char *dmabufdest2 = NULL;
    ! o' r1 y: v  N) L: j
77. 
    ( ?4 `7 f9 c( N2 g1 G+ u
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    + x  X' N4 G7 K+ |' z& p9 A
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

9 \* E) g& l5 t0 r+ 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
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。
) x7 ], W4 ]+ k2 b  a+ f! `     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

& Z' b7 I: o8 U$ Q2 \6 Z  D