OMAPL138如何在Linux下使用EDMA3驱动

yyj

+ B; T( E5 Q2 ^1 G5 n$ B: Z' R

1. [code]EDMA sample test application
   # \4 @& u4 G3 W9 \7 B. _
2. /*
   
3. * edma_test.c
   ' R+ ^9 U+ B' m, K! M; o5 t1 ?
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   , {- X; G" U8 |+ q; b: C8 l7 [
7. *   This file contains EDMA3 Test code.
   
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
    ; }7 }6 p$ ]$ {
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    $ \' Z' O. o! J; m! J- ]8 Y# x5 B( A
14. *
    % T) r& ^5 R+ O* q0 W* ]
15. * This program is free software; you can redistribute it and/or
    7 ^" g. {' u6 C
16. * modify it under the terms of the GNU General Public License as
    ( F0 v6 G5 X3 y
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    : ~! ^* m1 ^2 r3 C
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. 
    # C6 W  p# u1 ^$ p4 h
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    ( g. m9 q, y( f) L% d# H
27. #include <linux/errno.h>
    ) o/ X6 Z. N, h
28. #include <linux/types.h>
      {" F9 Z8 g/ j5 a/ z3 m
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    * B; U* W5 [; x6 v$ t  l7 r
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    $ s# ~5 u0 h- y( x  |
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. 
    + I8 U( M# ?! r' ^% m
41. #undef EDMA3_DEBUG
    " L/ b* K/ ~6 p/ F% y1 X4 _$ Z
42. /*#define EDMA3_DEBUG*/
    % t7 j& `# c  a$ q; _4 X- D
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__)
    1 T* b0 z# R* v
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    # b1 B* \5 k" W: K% o
49. #define DMA_PRINTK( x... )
      g5 `+ S+ y/ S8 P6 i& r- B  ]
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    1 d5 V# Y& Z' c
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    / B# \0 N  I7 g! K1 T+ y% b
55. #define STATIC_SHIFT                3
    4 x7 \" b8 P4 @( i
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    5 v4 m- f! d% S3 N' x5 @
58. #define TCCHEN_SHIFT                22
    2 {3 o; s% }! m
59. #define ITCCHEN_SHIFT               23
    
60. 
    , m" Z9 n3 }4 a$ v1 Z
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    % r, _& ?) d; c: l8 Y5 N
63. 
    7 A$ P5 {- L" z9 q8 q/ P
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);
    ! P! C) k% D+ a  L* n
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    8 d' W; D; _2 m: U7 q; ^
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    # G# ~; |9 M4 T* B8 R: V; g, y4 j
72. 
    
73. char *dmabufsrc1 = NULL;
    1 o$ B) Q& i# g: B8 V% b
74. char *dmabufsrc2 = NULL;
    , U8 B7 y$ z- M3 a& ^3 Z3 p' T
75. char *dmabufdest1 = NULL;
    ; {! k8 N  x* S0 u
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    5 G* k1 Q3 {) J6 r8 E
81. 
    1 n5 ?" I# S7 N- h# u/ b5 I
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

1 ~! R; b) Y/ C7 V) f& @! w      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 N/ w; f/ {* r+ D9 sarm-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。