OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   2 P1 |8 E' F" T4 x! G
2. /*
   
3. * edma_test.c
   - \3 V+ o0 y7 _8 k, Z8 N  K- Y
4. *
     f, s2 o+ n' Q) ]
5. * brief  EDMA3 Test Application
   % v0 l7 {: J0 F% z
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   ( C( D' y" C: L+ V. h6 N' 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
    
11. *         TO CHANGE.
    $ A) R4 W. {6 X- |! \
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    # n; y9 W) `" T; P8 R/ [1 W. \
14. *
    . m5 X+ l% Z, Y
15. * This program is free software; you can redistribute it and/or
    + a- o0 Q+ n4 p
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    2 r) e/ A5 u2 G+ N
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    / c* Q4 Y, S1 O, x5 z
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    : K. f. j& e! s' R) K" ?& S" ^
23. */
    2 c" M' A) a* D- L" u$ Q# z
24. 
    : |/ y& d8 S5 K7 k
25. #include <linux/module.h>
    4 w% j1 [3 i2 E) V+ [( j
26. #include <linux/init.h>
    " C2 p& t5 a' k1 H9 q- X
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>
    : l- g* H9 u. U
32. #include <linux/sysctl.h>
    & l4 Z; |" }; d+ J1 s  H  P
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    & K* Y. r. `6 S3 \7 j+ b1 m. N5 F
35. 
    # y2 e. |0 O* A
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    9 u, B% S  e& i6 J% z) W3 y
39. #include <asm/hardware/edma.h>
    
40. 
    ! m! B' L. q2 y0 I3 `/ I4 D) r8 n
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    3 o# @# P3 K) k: X  h; n5 G# S
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__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    4 @8 V6 J3 i! Y" W/ x
50. #define DMA_FN_IN
    # z! _+ _4 \! L) K/ t; B
51. #define DMA_FN_OUT
    ) d$ C! Q; W/ B" _- o8 q
52. #endif
    7 h4 B3 H; o5 K. \. e7 M$ x3 q6 F
53. 
    7 O7 V0 B4 W' N8 \& M: ]" R1 Y! o
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    3 Z; L( F9 y- i- L' w* n3 j
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ( i# c4 G# o; U' z% c# m8 q/ t
57. #define ITCINTEN_SHIFT              21
      L4 U; ]4 G3 U9 \% D4 R# h
58. #define TCCHEN_SHIFT                22
    9 d- `! G/ e7 v
59. #define ITCCHEN_SHIFT               23
    2 E0 j1 I; k) D' o" N0 V
60. 
    4 a' K% F, o' g
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    $ H$ P8 C/ z- C
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);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    $ |4 y; r( Z, |+ Q" c4 s
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    4 _) n  ^8 y6 A5 ]' Z! e9 P
77. 
    7 t1 W. O7 L1 Y3 p
78. static int acnt = 512;
    ! }' d5 w# [6 {, e# ~
79. static int bcnt = 8;
    ; T; Y: ?- x3 m+ t
80. static int ccnt = 8;
    
81. 
    + \! ]1 t# `0 c/ k1 T6 L
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

! F: W1 ?; o3 A/ S1 u) ^      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。