OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   3 p. h3 I' N, [8 E: I2 Y
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   ; z+ y: G6 Y, H$ d
7. *   This file contains EDMA3 Test code.
   " U2 D9 ]0 J$ a# }5 h
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   & w7 K% ~" ~& t: O
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    . V- Y9 [' O/ i5 N- I6 M7 i
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    , M/ g0 y' e. j5 i. W- F( K9 U
15. * This program is free software; you can redistribute it and/or
    1 U8 k+ K2 s6 }. a* \. }8 h
16. * modify it under the terms of the GNU General Public License as
    " E- l) g- U# D' |
17. * published by the Free Software Foundation version 2.
    . A9 g# Q2 O' k6 [& f
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ; f/ L* j6 W6 A
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ! A& N  @" e- c
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    " P9 M4 }9 a9 t3 y' Q
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ) Q0 Z$ C; W5 w1 @* y6 \% ]
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    # a4 p. N, K4 a% A. s
33. #include <linux/mm.h>
    ( K2 E3 }2 ?( b: G9 v
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    2 y; m- v, z( ?8 X2 Y
37. #include <mach/hardware.h>
    / I% C& X" W& f+ I  q1 ]3 [6 z
38. #include <mach/irqs.h>
    7 s# P. N8 Z( }, w  h; [
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    7 r' x3 h+ R, S
44. #ifdef EDMA3_DEBUG
      B( J3 P4 K4 E8 q
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    : ^0 ?2 H3 \- y( h6 J- ^
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    $ k. _) B) T! v: C/ u& \; F3 k
48. #else
    ( {: Y$ B; _  r
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    % Q+ }' L* U) P3 A9 _: v; T
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    4 t: ]6 O5 L5 `9 H
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    5 e( S  [3 Y' T' C
58. #define TCCHEN_SHIFT                22
    " C, s! b; p5 _3 _' o7 T& D6 x6 Y
59. #define ITCCHEN_SHIFT               23
    ) j0 s) O- c+ t, B( b1 N8 S
60. 
    0 [- a/ k( \9 F3 Y6 j
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    6 N# o7 k' E- K% E, ^
63. 
    # W+ i& u4 W5 R, V* S6 C& y
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : c" E% P5 q( S7 ^+ [# R: f+ V2 Z. ]
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);
    3 i3 w$ ~% G3 S6 M% e/ x5 B2 b
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    / [0 L6 o( j9 B) V/ y3 }1 N
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    5 R$ K# d6 {7 x: R; v& y+ X
71. dma_addr_t dmaphysdest2 = 0;
    + e, @; ^  K/ |7 g/ T: H; Z& o
72. 
    
73. char *dmabufsrc1 = NULL;
    , n$ z7 Z/ v" P5 S  E3 p
74. char *dmabufsrc2 = NULL;
    : A4 W' B/ y: W- ~
75. char *dmabufdest1 = NULL;
    4 `# y! @, ~/ J, Q+ o
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    3 @) V; k; y7 V/ ^' V9 }
82. module_param(acnt, int, S_IRUGO);
      L, {5 w6 |1 V- F, s5 g
83. module_param(bcnt, int, S_IRUGO);
    * ^4 c( b! q! M+ [  t
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
; I5 l+ K! k' 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。


4 i$ k$ D4 X* J