OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
     d% }$ M) m: O
2. /*
   9 k% T/ l' D2 w% l1 t. i( _* o5 l
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   1 b. u: _/ B# N# B9 D. o8 t
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   2 @4 z3 i) d8 `$ f% |
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    9 I0 W' v! w) p5 A
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    ( T/ M& `9 R/ g# j6 S
16. * modify it under the terms of the GNU General Public License as
    # N2 P2 H+ k. z( Y% V
17. * published by the Free Software Foundation version 2.
    # e5 F# G) N  J" ?
18. *
    + ]. j* G( }0 v
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    3 C8 l9 ?& R) M. Z
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.
    . U1 B' k' J& G6 z! J* Y
23. */
    
24. 
    & @2 U* x& t4 ]
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    1 }7 d, P, e5 Q; y+ W; `7 K' Q% R1 ]
29. #include <linux/interrupt.h>
    2 N* l) {7 h) M! M# I
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>
    
35. 
    4 z) [4 q6 V4 `3 T1 @' Y" \) u
36. #include <mach/memory.h>
    ' J  d9 L5 Y1 |  b" ^% E! j) Q. p# t' u
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    : F' l4 R9 b+ 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)
    , a7 N# w6 R( l
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
    8 G* r6 P3 D5 l7 Q* q9 j3 o
49. #define DMA_PRINTK( x... )
    6 {1 y( k# `* s1 }$ J
50. #define DMA_FN_IN
    * q2 |* t: ~1 j7 f+ _
51. #define DMA_FN_OUT
    
52. #endif
    2 g' J, j( i9 @# p. U
53. 
    : a8 Z- V3 H+ ?0 f
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ; }/ O; N- v) V0 G
55. #define STATIC_SHIFT                3
    & C3 E) Q1 \" E/ m; m9 T
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    . T0 H* w* [0 B$ q4 b4 p1 Y. u
60. 
    
61. static volatile int irqraised1 = 0;
    ) `! P1 U/ W7 O1 a' s# c9 [8 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);
    
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & y& N, \/ [: f, A4 a
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;
    / O9 S* v+ m* V* L7 Y
69. dma_addr_t dmaphyssrc2 = 0;
    ( @( {$ Z1 N6 k4 |9 Y
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    & w! F0 @! q$ P) C5 v
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    ' @3 f9 P4 A& ?- n% U( @
81. 
    $ l& U( X4 {% Y# b
82. module_param(acnt, int, S_IRUGO);
    & T; d% d! p9 }; h, j7 J9 H' B
83. module_param(bcnt, int, S_IRUGO);
    % P/ z. g* E: L' \5 v
84. module_param(ccnt, int, S_IRUGO);

复制代码

% t2 L! U/ b. r1 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
) u; S* k; L; I( Z% y5 g$ s" u! Barm-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。
- J! j: w! G9 ?% N! w     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

" l/ @+ D3 R5 H% P) y  z# B
# b! h: R  T' @. }5 z* K