OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
     Z9 c! F! j( e( W4 o3 l1 m
3. * edma_test.c
   2 L- F8 ~; i: _
4. *
   ( a% ^* L. O4 `# W
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
   $ ^2 W& T8 [1 Q5 S
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    9 B$ y" d& d; S' I
12. *
    9 M  p/ x. G5 @) O, C
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    & }  Y0 s3 s: j) s' f5 I& [6 k: Q
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
    9 B: ]+ X+ t: a1 f5 Y! W
17. * published by the Free Software Foundation version 2.
    
18. *
    3 k% G8 N/ R2 z) G, W: z5 j
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    1 }7 E0 U% X+ w& u- V
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.
    4 o6 J% Y9 Y: o# J" D: S
23. */
    
24. 
    
25. #include <linux/module.h>
    % g* R* T2 X4 V: @! c
26. #include <linux/init.h>
    , b& T) z4 W: [* `  h- J
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>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    + y4 e0 @0 @7 V  Q. c
34. #include <linux/dma-mapping.h>
    8 d6 r6 q: J! m3 d
35. 
    1 m; W0 S! d( t: ^& `
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ; O5 k/ }7 V: S3 v! C  X
38. #include <mach/irqs.h>
    / P% A# Z8 C* w9 E. P, N. T
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    ! f+ `# n. v( i' t
42. /*#define EDMA3_DEBUG*/
    
43. 
    1 Y/ k" P' o- q/ t
44. #ifdef EDMA3_DEBUG
    ! l* f4 u, l; e% e) g4 K! H
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    7 w4 L, M! b: s8 q
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    % K. f0 j7 i; N2 A
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    ) a8 C4 x# z& d1 ?/ I9 _
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    3 K6 X7 C3 q% h* x* c, L0 S
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    $ w4 w0 c6 c- b* f& K& O- c9 t
58. #define TCCHEN_SHIFT                22
    ' c, n( n1 C1 e* V
59. #define ITCCHEN_SHIFT               23
    + `$ c2 j9 r0 p6 z! X/ T+ u
60. 
    2 r) X8 N1 J5 `" ]
61. static volatile int irqraised1 = 0;
    ; U) _( ]- E/ b4 d0 o- ?- t. H( f
62. static volatile int irqraised2 = 0;
    
63. 
    * G! {, P$ z5 P" ]$ e/ j$ q
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);
    
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    ) q1 Q/ z+ `$ C: f
68. dma_addr_t dmaphyssrc1 = 0;
    + m& c. [$ D8 ?  K- {" b6 c3 B5 j
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    + o4 m& m. ~( O- D$ a1 i* c8 ]* H
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    / O$ n# M" w7 Y' _0 I
76. char *dmabufdest2 = NULL;
    
77. 
    5 Z0 a2 m+ s1 d: G, b( b
78. static int acnt = 512;
    1 t5 a7 O0 S; n9 o2 W
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    7 S! V: ?- |6 e7 z; w6 n- E! Q
81. 
    : }, O4 y. X8 u+ p+ b' w
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    ' L6 M( t* V" H0 e* h* o
84. module_param(ccnt, int, S_IRUGO);

复制代码

1 A  o* a3 D: N5 _! o+ e
# x2 u" D, D) x& }      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。
8 c, A; D$ o; b     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

$ `. z3 ]# r( b6 z( F' a
- l  E1 z! Q! I5 B3 [& _