OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   # q$ V+ V" G$ u. Z' S( L9 _+ z' z
4. *
   ' y4 G' o+ v) z$ b. M& U4 N0 Q
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   ) u, e3 g: r+ q2 [  y
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
    
11. *         TO CHANGE.
    0 m1 \6 x$ g, h. P, u
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. *
    ; m% G/ I! u% Y: C
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
    
22. * GNU General Public License for more details.
    
23. */
    6 [5 B- ]5 O5 g2 P  W  E8 s
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>
    
31. #include <linux/moduleparam.h>
    . x$ B4 `9 S# v/ F8 W/ w2 [$ y. D
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    / {, o3 B# F0 o: t! Z4 G; j
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    4 g6 h. z: Y- u4 O
37. #include <mach/hardware.h>
    8 D! C1 h8 O2 \4 T( E* b
38. #include <mach/irqs.h>
    + X, T( b3 M2 o0 b; \, ~
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    ; d3 w4 p1 I# d2 H2 ?. ?
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... )
    
50. #define DMA_FN_IN
    , u  i( \9 @$ N; n- M
51. #define DMA_FN_OUT
    ( G8 E2 p% q, U
52. #endif
    
53. 
    3 E# X, [3 l2 q% Y# e$ k
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    2 B0 `! ~8 J: C, n  x
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    , F& g$ O# e& f* j' R
58. #define TCCHEN_SHIFT                22
    - E; i: k+ G2 c% u1 f, B
59. #define ITCCHEN_SHIFT               23
    
60. 
    . R  }1 v7 R+ t0 b& ~$ Z" o! [2 \
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);
    & \4 m7 I4 {* y+ N& q" w: [3 t
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. 
    # N- \3 a( q  x2 Z
68. dma_addr_t dmaphyssrc1 = 0;
    6 l! u9 F0 a7 Q/ I# |4 y
69. dma_addr_t dmaphyssrc2 = 0;
    & W: b+ S$ h( W
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ( H# b" i+ |0 D7 B; V8 n' m
77. 
    . n/ _' [& t$ E2 W$ ^6 Z
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ' H# ^) |, y0 R# I0 @2 y* @
80. static int ccnt = 8;
    , J/ I. J9 u8 u5 I7 N. n
81. 
    1 L1 ]+ A: z' a4 N+ X! t3 w# L
82. module_param(acnt, int, S_IRUGO);
    8 g$ d! i  _+ E8 T7 O. a% Y
83. module_param(bcnt, int, S_IRUGO);
    8 r8 u& ^1 B; Y0 i) E
84. module_param(ccnt, int, S_IRUGO);

复制代码

: w4 _* O1 L7 R' H; G/ I
      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。
+ d" m; v: q4 x  [
" |0 ?! L9 Z. D, ^3 h& p2 N