OMAPL138如何在Linux下使用EDMA3驱动

yyj

- |# a5 l4 J9 w* `

1. [code]EDMA sample test application
   * \3 t. V) T% h2 q+ d; j
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   5 ~& R) G0 P' ]4 Z8 b
6. *
   7 }" F6 s) x4 R" m  b: v( d% _
7. *   This file contains EDMA3 Test code.
   7 {4 ?3 m  c" B6 Z) ~
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
    % D% J2 I5 V/ ], m0 I
11. *         TO CHANGE.
    . w7 }3 h% v- E4 W1 L5 d/ q0 |
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    % L, d# b0 R7 U0 y
14. *
    : P8 @; W2 h" Y
15. * This program is free software; you can redistribute it and/or
    7 O6 t: {/ k3 Y$ i
16. * modify it under the terms of the GNU General Public License as
    $ E& a+ [5 [  _5 k
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    / W" w; D6 z' g  r' Z
20. * kind, whether express or implied; without even the implied warranty
    . F% j4 g0 s' l0 H
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    6 w) d: F7 l5 k  L
22. * GNU General Public License for more details.
    
23. */
    ! t% V+ }4 n. e
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    * B- _  ]- m) M2 @4 b0 W
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    / ^/ B  Y. s( x. p  s
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    2 ?) z% w/ z: c' v- I' I3 N, j
31. #include <linux/moduleparam.h>
    6 D& j4 U$ i# T0 m9 ]: m
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    # S! ^( o9 y. ^, O6 t
34. #include <linux/dma-mapping.h>
    
35. 
    ; s: f7 f0 T0 }( I/ T% [
36. #include <mach/memory.h>
    6 L& _4 g$ t/ `6 S. X
37. #include <mach/hardware.h>
    - h. O, I  w8 k( w$ x: ~
38. #include <mach/irqs.h>
    3 I# I/ y* `- E* P1 M
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    $ N+ h# J. l& ?: I7 F- p
43. 
    * C3 N. A! }' Q
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__)
    + X% m4 Y* m6 m/ G& m4 F+ a  M. q) D, V
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
      l2 W! O, F7 H( D/ D5 I
48. #else
    
49. #define DMA_PRINTK( x... )
    . v' Z2 y1 M/ e' E' Q" g6 Q
50. #define DMA_FN_IN
    5 l" p$ |3 k1 r, f3 Q1 m4 p, e1 G
51. #define DMA_FN_OUT
    * }) ~7 Y: _3 f/ R, L, S/ a9 b
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    - l: E4 [1 q, j  x
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    & V2 k& X% }: |( y! Q& \! [
61. static volatile int irqraised1 = 0;
    . d% C3 x' \! v$ M; B% N, ^( E
62. static volatile int irqraised2 = 0;
    7 }2 [4 ?5 X; c* n' B, y6 x( \
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    3 Q5 q0 v+ G* Q. t* K3 V# I
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' e; m2 a  s, M, ^3 k
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    * p% K+ ^+ h6 _$ y2 O# o
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    2 G% m+ {6 ]+ ~: V* R1 P
72. 
    
73. char *dmabufsrc1 = NULL;
    / P9 z7 ]1 d9 U8 m$ X2 j2 t
74. char *dmabufsrc2 = NULL;
    ; L7 s1 u* x, Z0 \4 V; K3 k
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    3 U& ^8 R+ \/ K" ^1 l$ p! x
77. 
    3 z1 A- F+ i& q/ R! U
78. static int acnt = 512;
    5 q' w' w* i7 D8 R* G7 Z
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    - V* u5 R. D  M
81. 
    4 D* w5 B5 Q. F
82. module_param(acnt, int, S_IRUGO);
    ( i! h5 @) @  x! [  d1 l
83. module_param(bcnt, int, S_IRUGO);
      C. F* s. c4 w$ t' j3 G, ^
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
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。
0 W( g0 p4 D3 R( S9 j