OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ) e/ ?' e& d5 i
2. /*
   
3. * edma_test.c
   4 U" h/ a3 I* d! s- S
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   0 }  @& M4 {4 E5 c& N
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    ) q. l9 Q) q  q
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    $ ?4 i4 R, B, l0 w7 B
15. * This program is free software; you can redistribute it and/or
    % C1 X' }2 h/ C' o3 q, p6 ~6 D
16. * modify it under the terms of the GNU General Public License as
    : l1 d5 v1 R& f$ m$ |2 r6 h' }
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    . n' D+ K% I; ?# d
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. */
    % ~2 `' ^  S$ Z: T4 x
24. 
    8 t6 n* l7 l9 n, f
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    2 g8 }0 p" P- V' [
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    & t& \( S* f9 C: H, }0 Z: V, p
32. #include <linux/sysctl.h>
    * }1 s2 S# o9 v5 G1 N$ \! D- p
33. #include <linux/mm.h>
    - I/ E+ g6 h: v, R/ I' h+ Y4 ]* Z' W
34. #include <linux/dma-mapping.h>
    
35. 
    ' N& |5 C! J, }6 F0 L6 j2 v3 Y
36. #include <mach/memory.h>
    # e/ Z  X! ?/ J/ C8 I8 V
37. #include <mach/hardware.h>
    + m: h& z  N2 }0 J/ D2 _9 t4 l
38. #include <mach/irqs.h>
    " ?/ N& ]# a+ R" X* Q4 d- m1 u
39. #include <asm/hardware/edma.h>
    ( A  A" X1 v; _0 ~! m
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    4 C+ q9 k4 k) i% c1 S2 F
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__)
    - @  `- `) r5 m: O- C2 @0 E! H5 l
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    3 k" D8 \' i/ s- d: Z6 g
48. #else
    $ D6 X  w3 n. z6 v, [
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    : o- E1 D6 q: F* E
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    . b6 S1 Y" C; }9 z8 ^
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    - r5 F0 Z. m5 d% m5 Z8 T
57. #define ITCINTEN_SHIFT              21
    ) O( G8 g4 M1 e; x2 N9 l) m4 ?
58. #define TCCHEN_SHIFT                22
    ; o  f4 u% c; Q$ G) n- a# o
59. #define ITCCHEN_SHIFT               23
      w, `/ i% r4 W; ~
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    9 Z+ h2 B5 H$ r% B& ~# C5 c& a( g. X
63. 
    0 M. ^" V( H& @( k+ J% P" s
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    7 v$ j0 e; p! H7 I  _& o
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ) N, v; s5 r( j" L# s  N4 _
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    8 i5 ~  B# h. w/ P4 O: W' i
68. dma_addr_t dmaphyssrc1 = 0;
    1 k- M6 L7 {5 ^, I6 W6 w( `
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    # O( P- t+ f  g8 v% @. L5 i
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    % f3 N. o$ S( D) z
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
      Q) A* l& z8 T$ g2 I5 k1 k
76. char *dmabufdest2 = NULL;
    ! v. ]4 i) K6 b# \
77. 
    : e% c; w) V/ q. e2 X
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    + [, m7 ]) Q6 R# R
81. 
    
82. module_param(acnt, int, S_IRUGO);
    9 S/ T7 ^: S" I
83. module_param(bcnt, int, S_IRUGO);
    9 @+ S! y+ ^, N- l1 O) P
84. module_param(ccnt, int, S_IRUGO);

复制代码

, @0 e6 ~# z6 y1 `7 Q- J
      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
( G. j/ ~# }) S7 Parm-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。
1 V5 Z- U% [( m" @" V: A* m4 i     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
2 d5 R7 @0 o4 d+ I1 ~