OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   ( }" ]5 `" t; B. ^
5. * brief  EDMA3 Test Application
   
6. *
   % q7 u3 ]1 a4 ~0 Z
7. *   This file contains EDMA3 Test code.
   ! e; q4 @9 L) ]" D! ?
8. *
   
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
    $ R+ N5 r; T* j7 V* i( X
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    - C" m7 ~0 f9 g- u5 _
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.
    # a2 q4 d6 L  H$ f$ i
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    8 D! d) {, C2 A  T3 Z2 B
22. * GNU General Public License for more details.
    ' m* M8 @5 f, Z5 ~$ l7 g
23. */
    
24. 
    
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>
    " g7 D- u& c8 r5 o/ K% A6 M
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    : R/ \# Z% O+ n' j# r% L, s
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    - G/ A% j" y/ v! b9 p$ R
35. 
    5 @9 P% D9 U) P1 t7 o* P
36. #include <mach/memory.h>
    3 Y/ i/ k3 j% `2 z; j  V" @: X
37. #include <mach/hardware.h>
    9 P% f/ c7 ?' M( E, u/ z$ W" q! I
38. #include <mach/irqs.h>
      ]0 W% q  g. u9 y" B( D
39. #include <asm/hardware/edma.h>
    7 Q- x1 O3 T5 \1 `
40. 
    
41. #undef EDMA3_DEBUG
    + z; G2 j/ T' I; Y1 |
42. /*#define EDMA3_DEBUG*/
    
43. 
    4 P3 V. @7 \/ e5 R
44. #ifdef EDMA3_DEBUG
    9 ~; s) }& F0 h0 b
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    # Y# [4 e8 E! V
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    / I5 t# Q7 E+ t9 G" B3 J9 _
48. #else
    
49. #define DMA_PRINTK( x... )
    * L% j2 B6 A1 j/ r; M
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    3 b0 Q# C8 W* v( ?  n8 H0 _  R" J
52. #endif
    1 [# j+ ?3 i9 j: [) _: S
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    : v! y9 a5 e& b8 M
55. #define STATIC_SHIFT                3
    9 d0 u. `3 I  q3 C) |9 T* ]$ s
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ( E; \; n, f1 |  V8 _. s) g
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    * Z2 P( @1 j6 v- w
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. 
    ' E" i( C5 F# x5 {
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    0 e" ]& Y$ _: a" a: s
70. dma_addr_t dmaphysdest1 = 0;
      A; A; h4 |7 p: U; z0 ^' ?
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    7 N2 B/ G. e% n7 t+ C
73. char *dmabufsrc1 = NULL;
    3 {1 [: K" i6 t% U1 {. b
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    3 n: m4 P1 h5 \/ @) j) U# _' }
80. static int ccnt = 8;
    8 l! i- P0 I* F
81. 
    ! L* h: G2 O9 Y) l* `
82. module_param(acnt, int, S_IRUGO);
    ! {/ D, M3 j# N0 a7 D
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
5 t+ F0 f! s# d$ U9 \9 varm-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。

4 b: _! {$ i2 L8 m5 y
3 m( k$ _4 H, @& ?: ^" `