OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   9 z  D2 V6 L$ ^  r, O$ H
3. * edma_test.c
   4 @% P$ y- \. F, K. t* [
4. *
   ) y" q3 z: L. I. i; G7 a) \
5. * brief  EDMA3 Test Application
   2 T7 M3 l- Y2 v  w" L! w
6. *
   ! \0 H' W. D; E* o+ z) j3 t* R
7. *   This file contains EDMA3 Test code.
   ; O( b3 j. x5 v' c: }$ v) M
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
    
11. *         TO CHANGE.
    / t2 s2 ?- c8 K. _0 k
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    8 ~4 k& d: U7 `9 F' H  x9 Q
15. * This program is free software; you can redistribute it and/or
    " U3 ?' c; Q2 f
16. * modify it under the terms of the GNU General Public License as
    & {  A( a. p$ a! G
17. * published by the Free Software Foundation version 2.
    $ I- z: Z5 U- A) e& J% M% Q! q
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    7 Z$ n! e7 {$ _2 j' r- Y
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    . W6 N# _; k8 {: ^2 E1 |
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    3 Q% A$ d% Y3 d& r2 c. B# d
26. #include <linux/init.h>
    # U7 ?# |; `$ O/ }
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>
    ' P3 S0 n  D8 r+ E$ f! P5 ]3 B
32. #include <linux/sysctl.h>
    . M/ h& W! b6 A$ d7 P2 r
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    6 m7 E" S+ j$ v
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
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__)
    7 N1 _: |6 F0 P6 |& {
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ; {) j0 b/ ^/ W
52. #endif
    ' Z$ z8 [7 C! b+ Y
53. 
    9 J1 J; D0 _, {5 t7 K/ }; n
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ! h/ T  E# p: q& }9 a
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    $ R4 I$ H8 M9 c* ~% x9 q7 _7 g4 H
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    4 |# h! e( M: u; o1 D
62. static volatile int irqraised2 = 0;
    , F, F$ u/ X2 O. v* |& S% _3 s6 D
63. 
    . Q" R  H9 M1 B6 H! E. |& N
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);
    9 B* l& m8 I, |: p( t" W
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;
    
69. dma_addr_t dmaphyssrc2 = 0;
    . b( o, X, C8 H5 h$ W$ E' Q( e
70. dma_addr_t dmaphysdest1 = 0;
    9 M3 j: o6 a, L4 q! q
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    $ V, w3 H  Q- V
73. char *dmabufsrc1 = NULL;
    , ~0 y4 M& F$ N/ @3 u; ]+ W: q) }
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    % [' C/ B8 ~& N. p! h) W1 t  U0 n& g. P
78. static int acnt = 512;
    * }: d" n  N' |" V9 p  N2 T" C; ^- l
79. static int bcnt = 8;
    7 {- F. n5 S& }1 B9 t5 y+ S
80. static int ccnt = 8;
    
81. 
    * j( u: R5 @* P# T; R3 F2 u
82. module_param(acnt, int, S_IRUGO);
      @& {  C( A' o) {# c
83. module_param(bcnt, int, S_IRUGO);
    ! f7 ?+ V  t: F: u6 g- ^+ Q
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
2 V4 w* o8 W  y+ \. c. Uarm-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。
6 d5 Z) |7 N# h( b+ Q3 Z! T8 ^     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 x7 \6 K0 m( u! R0 i
3 e6 U5 \+ e& J6 h
0 n0 c- l& r8 `( k6 J9 k2 e