OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   5 [' b5 d3 D* y# |7 U# [: r  Z
2. /*
   2 Z1 Y! P, s- L4 t9 ~0 R
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   $ y  I" }9 S& j8 z
6. *
   - ]9 w5 @4 ^+ |
7. *   This file contains EDMA3 Test code.
   
8. *
   : K, u. c& Y* _) j& @6 I
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
    * X/ ~  ]4 I+ @: u3 `
11. *         TO CHANGE.
    1 A) E* l; H) F
12. *
    8 n# O- U9 m3 f( u0 ?) V0 v
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 r8 n& c+ W! s6 k$ H. l
14. *
    % c) q) ~, m! T
15. * This program is free software; you can redistribute it and/or
    0 R! X1 m% w/ A6 T8 S! w- b: F
16. * modify it under the terms of the GNU General Public License as
    6 E; V. b( u; G6 B% {. {* d
17. * published by the Free Software Foundation version 2.
    $ @  t! x5 [; ^! P2 P
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    & G3 r  R3 e5 @4 ]0 |9 H
20. * kind, whether express or implied; without even the implied warranty
    ( s8 F) C; ?. H+ L( F
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    5 a& f. J1 M' r! J9 P8 B7 J
26. #include <linux/init.h>
    / @5 q' a! s! u3 W
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ; K0 k! P5 w8 @2 J
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    . r7 W# p5 ^; x: q
31. #include <linux/moduleparam.h>
    + s" _: g- d' R
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    7 u# J" j  E* W* x
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    # \* B& y1 c3 |' ^; Z
38. #include <mach/irqs.h>
    6 g  Z  W; J* X
39. #include <asm/hardware/edma.h>
    1 K  @0 y# i3 c. ]& b
40. 
    6 \# ?: m( h' d8 r5 o
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    2 U. o" ~8 _7 |& a7 g, }
43. 
    9 G" _& d+ ?5 }
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ! w* l: u8 V- B' f/ C+ ]
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ' B1 U7 t/ r7 D
48. #else
    8 u& P8 o% J, W8 ~
49. #define DMA_PRINTK( x... )
    3 M0 O9 a3 A- [
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    $ B! J$ w/ H5 Q6 k
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    " i9 N5 J' x1 W' P& m) P  O
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    % Q. m4 k% x3 ^2 Z' m
58. #define TCCHEN_SHIFT                22
      \. ~. {6 `/ L: s. B
59. #define ITCCHEN_SHIFT               23
    
60. 
    8 x; L0 O; [5 Q% n* d* W. [7 Y: A
61. static volatile int irqraised1 = 0;
    ! f7 X, c3 I7 T' Z0 X0 N3 K
62. static volatile int irqraised2 = 0;
    % ?, N1 F' c1 @8 j* {' d
63. 
    
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);
    
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    # ]1 b, l# U/ f) r" C: b" u; M0 V& G
67. 
    # [2 \1 |! r' v! m
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    5 A8 x( x' ?8 o' w: ]# P
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    2 |7 e, H: L, d$ x8 d* R
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    / R  i; c' d( \$ u, W7 i
76. char *dmabufdest2 = NULL;
    ! z$ ]# \, L" E% U
77. 
    
78. static int acnt = 512;
    4 i2 V& v, t- @6 w8 B7 {
79. static int bcnt = 8;
    % h) R& ?; p% w8 B2 W, _! J9 q
80. static int ccnt = 8;
    
81. 
    5 k$ N  X: L- L+ }8 n0 N+ }
82. module_param(acnt, int, S_IRUGO);
      r4 F2 ~* w$ T) j6 Q
83. module_param(bcnt, int, S_IRUGO);
    4 r+ Z8 b) d) u
84. module_param(ccnt, int, S_IRUGO);

复制代码

) b( f/ I9 b* _$ _! a7 I0 P      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
0 i6 @. r* T3 O) qarm-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。
0 t% i) @1 W4 V# W- T, u& m5 C. R

0 G; _3 y: C0 ~  [; K. ^# n- n