OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   ; n' o% j9 C7 b
3. * edma_test.c
   3 k1 q2 t( o! B  k& v- T6 W
4. *
   $ G3 O9 {& I/ n. Y1 E
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   ( |( H# A5 ]$ m9 l: r7 Y
8. *
   ) N% ]  b, m  j! \# Q" I
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.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    + D. t) e  Z- Q7 j) @
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
    ; |. M' S1 H* \) N6 {. s
17. * published by the Free Software Foundation version 2.
    7 W* O2 E% f" q! x. h
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    3 q! R* L+ |3 Z
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    8 ]3 @$ d# e! O4 _' r  n
22. * GNU General Public License for more details.
    
23. */
    % C3 C4 l$ f7 V" H6 v+ ]. f5 M
24. 
    ( c6 ~) j; X$ H' _9 p0 G: G
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    & u3 z7 U0 B, i' O0 y7 Z
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    . L) M6 i, M$ Q9 Z6 V
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    ) n' j, ^2 L1 _% [# G$ A  a# P
32. #include <linux/sysctl.h>
    ' \4 O& B* y3 Y' P! D! N. C
33. #include <linux/mm.h>
    * y& N: i5 E" z. W
34. #include <linux/dma-mapping.h>
    ! ^3 |) Z% \' n; R
35. 
    & p: w0 V$ t8 a: Q! j: ~5 W
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    6 D4 p: P  @! ^  \& a4 p
40. 
    
41. #undef EDMA3_DEBUG
    , q; ]7 H+ I/ T4 _5 [* Q5 v
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    & `! N& r: d6 g7 K# V
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    . Y8 d: n7 n2 g. _% ?( F7 `
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
    1 X9 X. V) X: U" C
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    $ r$ c$ Z3 z: B3 |1 P
56. #define TCINTEN_SHIFT               20
    ; V8 v# f/ T# \9 f4 k5 j* A7 j
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    & p- j$ Z4 k/ b9 r
60. 
    % \) A7 Y% L9 W* _1 a' j7 F
61. static volatile int irqraised1 = 0;
    " Q  p! j  O3 J( a% [
62. static volatile int irqraised2 = 0;
    
63. 
    0 E: u$ Z9 K4 o8 i
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    . p- b* v3 w  @. z9 H2 J, O
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);
    # j) R. [( U0 H% q9 L% Q
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. 
    + K! _7 a2 T4 K$ p
73. char *dmabufsrc1 = NULL;
    & E3 \5 ~/ T$ n/ |0 \
74. char *dmabufsrc2 = NULL;
    . g+ n/ T, C: v/ R
75. char *dmabufdest1 = NULL;
    ) C, _6 [( K- R  J
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    % r5 M+ ?8 c- s
83. module_param(bcnt, int, S_IRUGO);
    & e% Z1 R9 q7 a- I) ^
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
( S- z5 x2 ~% c5 e& Qarm-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。