OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ! l. ~% ~5 E/ P! C1 ]) D* O0 n
2. /*
     M- p7 J' _5 K$ q( Y1 |$ V
3. * edma_test.c
   * O) n* V4 G; ?, _
4. *
   
5. * brief  EDMA3 Test Application
   * J5 i4 Z/ e8 r
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ! k. j, H: C  `) ?. d- r# \/ `
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    3 p, R2 V8 I9 [9 Q' ^
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
    
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ! `& D) U4 {; v& C" U. w% u& ?1 Y
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    / {; f5 N8 ?# i
23. */
    
24. 
    
25. #include <linux/module.h>
    + F, Y1 I6 y4 f
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>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    : M: I: K7 h9 p  G
34. #include <linux/dma-mapping.h>
    # s" u/ u" N! }3 ]+ e3 C# }- R. `
35. 
    : }6 ?8 s& |! K( I' f" |  U0 j5 j
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    / @! P  @; \. G, t4 m6 n) f
39. #include <asm/hardware/edma.h>
    
40. 
    / N# j" R' ?2 C
41. #undef EDMA3_DEBUG
    0 R2 H$ ^. m: h6 w% M9 U1 D
42. /*#define EDMA3_DEBUG*/
    
43. 
    * u) L$ t7 g9 d# z' K
44. #ifdef EDMA3_DEBUG
    , O6 u3 E& `2 d* o
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ! ?& g) I0 |+ u1 z4 f0 [7 n( u
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ! `0 B/ q0 A- @! f
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
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    6 `2 `3 V5 F# g+ o
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    9 A$ h6 Q% a" j( a" k
57. #define ITCINTEN_SHIFT              21
    ; w! O+ u. m  K6 b8 C) _! Y
58. #define TCCHEN_SHIFT                22
    ! j* X# m5 Y( E8 r. P
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    & D& M2 S9 b( j6 F
62. static volatile int irqraised2 = 0;
    
63. 
    7 `& i/ l. ]8 p
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    9 L' T- \0 v2 i; d, g: d
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. 
    4 N: m/ S0 w0 y  n' _1 s$ O" |3 r
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    7 D) ?; \7 g9 r8 H
71. dma_addr_t dmaphysdest2 = 0;
    ) a2 q& N* D. }2 Y1 O
72. 
    
73. char *dmabufsrc1 = NULL;
    * J" Z1 c# Q1 a- }
74. char *dmabufsrc2 = NULL;
    0 e) s$ p3 L/ _+ b
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    3 @. g. J( m* ?4 p
77. 
      G. M" ?$ E7 V% n5 h5 V- I  p
78. static int acnt = 512;
    , W9 U7 l' S/ d# T/ {
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    : [* ^; l0 E" x  L/ ^
81. 
    $ @! ~1 Y+ O( q, w& {7 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

      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。


' q: _8 x# A. a6 x