OMAPL138如何在Linux下使用EDMA3驱动

yyj

9 E1 x$ Y. ^9 t3 A5 j' Q; w* K, ~

1. [code]EDMA sample test application
   1 g) o3 R; Z  t- g2 @
2. /*
   
3. * edma_test.c
   3 W% w6 o1 I' n" ~' K
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   ( ?" T" w/ d" c# T: c7 l0 F* s& I
8. *
   . C' X, U6 Q7 E( F$ w# h+ ~
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   % b* l5 \+ g" [8 V* b
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    ! U: |; ~5 @! P, m5 R- P
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    2 ]4 A5 F' [+ G* |: H6 m* I
14. *
    
15. * This program is free software; you can redistribute it and/or
    % Z3 A! a* S9 ], C9 D
16. * modify it under the terms of the GNU General Public License as
    * I7 j; v4 H, `' w4 p- \
17. * published by the Free Software Foundation version 2.
    7 a9 q8 \/ d, M$ _1 H: X
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    " y/ c; [% f  _$ e& C
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    # w. H7 Z- t( J
22. * GNU General Public License for more details.
    $ `( e- p& a- _+ @& s0 Y5 I* u; J9 n$ F
23. */
    
24. 
    4 |, ~3 {4 ?! U+ P6 D* N1 Y# f
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    & {+ Q, E1 V! E5 u  s0 X
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    , M3 i% l$ t5 N; x& Y9 q; a0 ?/ x
35. 
    # q- c0 s; a/ t; I, Y
36. #include <mach/memory.h>
    7 C+ S( ]5 {& B) _6 d! ~$ Z
37. #include <mach/hardware.h>
    $ l  J. P, A. Y# w$ q# F
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    0 U! [/ Z! h: g9 z
40. 
    & ~4 M# e3 a! I
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    - e8 [* r% u: _0 P/ t2 }
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... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    " _( T4 Y0 H1 ^+ e4 [) ]$ p* A+ S: Q( X
52. #endif
    
53. 
    8 b) Y4 p* D* P; \7 v
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    & N7 u5 ]' V+ H# N& J; F
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    7 n  l4 g6 W2 @
59. #define ITCCHEN_SHIFT               23
    , `# J& \' E& y. ]
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    + p( W( O* f1 H& V  a* n
63. 
      v7 ^9 P# q0 D; r8 k
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    * h% O9 Q4 @- s, n) S  u
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);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    + ]  n1 ?3 N" |  q
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    2 G* ?8 |0 r' i; ^3 Q. k  [
72. 
    4 r& u" ?" `. n% h$ P6 j
73. char *dmabufsrc1 = NULL;
    : a9 u  N4 S9 Z0 W/ e( |7 Y
74. char *dmabufsrc2 = NULL;
    ! N* Z. e: W( r' g2 h
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    9 u3 e7 x+ g/ Q  n7 d6 k
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    . s1 k' [/ u+ u0 b
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    6 E  M: r* B$ y( b5 L# m0 ^$ h
83. module_param(bcnt, int, S_IRUGO);
    & b2 X% e5 B. a' f7 s! c+ k' f# \
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
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。
) @4 B  \8 U5 I* Y/ H6 {$ `     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

3 o5 Z3 m& X8 K) D1 ]* Z