OMAPL138如何在Linux下使用EDMA3驱动

yyj

# Y0 J+ }" x( \9 @' ~8 h; q( r

1. [code]EDMA sample test application
   
2. /*
   * T* k4 H8 t* [: W! K. L) ]
3. * edma_test.c
   " o; f+ p! [' A4 d  ?
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   & F; q5 p7 R- K+ t7 ]: X8 J
7. *   This file contains EDMA3 Test code.
   6 M2 X7 |1 A/ _# t3 _
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
    # [' l; g) V, {0 M$ N$ n2 h4 u
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    , H$ I# Y* u( L5 F. Z7 w
15. * This program is free software; you can redistribute it and/or
    : L+ Y8 t- E; K0 A4 w" |5 ~
16. * modify it under the terms of the GNU General Public License as
    - T# {+ _5 T4 W+ N3 b% l
17. * published by the Free Software Foundation version 2.
    . o2 ~: B, Z( n8 h5 l/ g
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    " P! l: R1 Y2 b% B0 O( T1 N
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    $ N2 z* q4 j( a; c9 W7 F/ |- e
22. * GNU General Public License for more details.
      r; R9 I& s4 H  t
23. */
    
24. 
    ) f; w, o" P7 f$ I
25. #include <linux/module.h>
    & h- N2 ^# w' d8 @1 |
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    : A) c# H& \+ G( d
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ! a2 S" x9 N  t! Y# q
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    2 d6 ?# D$ c$ n) V
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    4 G0 F" H3 P7 o; G7 y8 \- s
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    2 q( j% t, q7 x/ f1 \) u6 e2 ^9 e
38. #include <mach/irqs.h>
    6 J+ f# o& D# W; M6 P
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    & O. S: @. a2 h0 W
42. /*#define EDMA3_DEBUG*/
    
43. 
    - v$ i# M! x' u! }. M' h
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... )
    $ T! C. e6 E4 n
50. #define DMA_FN_IN
    3 i9 \' {9 q  G2 j  x) w6 B7 x
51. #define DMA_FN_OUT
    
52. #endif
    / n9 G# [- ~) a) Z% k0 h! k
53. 
    1 q) e- c0 m  R( V
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    " z' c; R# C/ Z+ g0 ?" T9 i# S
60. 
    * D* u" p  z. e  }" i4 R9 V! b
61. static volatile int irqraised1 = 0;
      @% y" K7 [! @
62. static volatile int irqraised2 = 0;
    " V4 ^' G3 o# f( F0 Q
63. 
    1 _5 k/ ]/ W( }2 i# t. L3 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);
    # b9 H8 V& l7 }5 H' V2 ~) h' u
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    3 Z* I( ~& Z3 L
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    . S6 L! L- j; s- n; B2 ~7 _6 S
75. char *dmabufdest1 = NULL;
    0 g8 t, t+ i; s: \/ `( s  p( }2 u
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    0 C6 {) d* B. v* {2 ^
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

" i: w; [. @- J2 L7 P# e      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。

( \6 p: n. y& J7 \$ ~
; ~- M/ N. r2 E8 L