OMAPL138如何在Linux下使用EDMA3驱动

yyj

: a; `) x$ b2 o9 |2 [0 E6 k

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   2 C( t# s( l. {! Q# a% b
6. *
   
7. *   This file contains EDMA3 Test code.
   1 o4 x- [6 V% A8 z( Y2 ^3 M0 C9 X9 a
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
    2 B1 h: I: d( D
11. *         TO CHANGE.
    
12. *
    ' P. I  N1 q/ A2 D
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    9 O9 l& k/ O1 b" X7 {
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
    ; C1 k7 u/ K# ^+ E$ k9 Q
17. * published by the Free Software Foundation version 2.
    + r9 r( n; a: L% v
18. *
    / x. I. ^7 {/ o& y
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ; ^4 N7 v# s1 E9 V9 d
20. * kind, whether express or implied; without even the implied warranty
    7 r% Z6 d8 J9 t9 s
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
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>
    # D1 Q' b3 m9 r6 W& W; n& `6 [. Z
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    ! _% r! u9 }& r3 V/ M1 {' |3 }$ f1 D0 ]
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    $ i6 x' m+ B! K5 @6 `- p: a. W
34. #include <linux/dma-mapping.h>
    " P& l" Z+ m2 D3 U$ q
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ' g' l) p9 a* g( f
38. #include <mach/irqs.h>
    1 O, N0 W, d( p" N# |; N2 J3 ]  s# e: x  m
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    0 X% U# S7 _) I% W% I
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__)
    $ f+ c0 u. [: i9 J
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    % C$ u6 s, _9 |2 m6 n: \' g
48. #else
    3 ]& l" J" Q' E7 g  s) p
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    ; z6 |( ~, j: a* Q
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    7 {" C  h* G8 J5 w
55. #define STATIC_SHIFT                3
    3 }  f/ h; K1 H& C9 z
56. #define TCINTEN_SHIFT               20
    . J7 [& s8 ~) e( }3 G/ x
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    * D8 b9 U! B1 h8 L
60. 
    
61. static volatile int irqraised1 = 0;
    : o- H: D9 h* m  {
62. static volatile int irqraised2 = 0;
    3 ]( G1 u; d9 u9 z! {$ 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);
    , Z! n6 W/ @$ Y
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    9 i9 x" C  j7 D! h+ s! P
67. 
    + p0 R3 Z% k& H0 \
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    3 B* t6 X3 S9 a& J0 {7 u
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    3 l( \6 p4 n- l  U
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    " X( K' I& k2 Y8 w  W) P/ t1 |
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    & V( s' q7 N$ p  w
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

2 l( u5 R0 `7 Z
      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$ x$ A( N$ T/ C; j
' B$ E+ T: h; R. B% }) y8 V