OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   , e! _/ L; ]* b
2. /*
   0 k: i5 P) M4 U  d: H
3. * edma_test.c
   
4. *
     `0 |7 r- K. h. _& `0 x: r$ g
5. * brief  EDMA3 Test Application
   0 l3 s" z* p) U. S
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   ) a' E" O6 f' Y! b' \) ^
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
    ) n2 k: S" |" m, Z# A
11. *         TO CHANGE.
    
12. *
    ' R7 J- |( ?/ \, ]( q7 {
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ; n# g* x1 W+ H- E6 K+ w! S2 p
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
    
17. * published by the Free Software Foundation version 2.
    ) I! k" ]* V) b0 l2 R/ U7 U' K
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    7 X2 j$ R+ @: a9 _/ z; m1 B+ t8 H
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    # [9 J6 S& U, e; l2 v
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    2 x& R& M% Z5 o8 t
28. #include <linux/types.h>
    # e, |# X, Y  G5 Y
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    + f0 u9 f0 b! g, [9 @
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    3 h( c* X1 R  r4 p- ~+ d+ ?
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    2 |6 a$ N* [9 r3 ^5 ~
43. 
    ! e$ m% P+ V! A, s- q6 V( R
44. #ifdef EDMA3_DEBUG
    9 j5 Z# p+ l& B( I- E1 o" B
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__)
    , ?/ R% Y! r  O; z% x8 E
48. #else
    4 `, r9 K5 A* g. g
49. #define DMA_PRINTK( x... )
    3 A6 W( M2 g- A) j  T6 J3 w5 `
50. #define DMA_FN_IN
    6 s  }$ D* [) O# z
51. #define DMA_FN_OUT
    
52. #endif
    ' g& {/ w' C& v+ p
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    - ^7 i0 i1 n, B4 e! y8 [
56. #define TCINTEN_SHIFT               20
    8 s0 v" p1 `* V! K0 \- O; X
57. #define ITCINTEN_SHIFT              21
    3 X# L0 x9 q4 g3 s. ?  H
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    + b# Z; R( R  Y9 F( v4 m
61. static volatile int irqraised1 = 0;
    / t8 z  o& g0 i& c( x
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    . C( y; y0 Q: ^! Q: ^1 o
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);
    5 c5 u; N4 `! {, s( Z1 ]7 y
67. 
    - K$ j# _. V, |( d4 g. J
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    , s& S, _3 L7 L( U" a& f8 T
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    3 v8 g9 z+ D. `# D/ d" [9 a/ j2 @
76. char *dmabufdest2 = NULL;
    
77. 
    9 G; I% d' C$ |* Z# J
78. static int acnt = 512;
    
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

. R. i) \0 R! d9 W7 _0 Q6 ?
      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。
9 N; @* u3 N9 v- Y6 i
7 l. k8 I5 o& A
1 [2 A) L: H8 N+ d( t