OMAPL138如何在Linux下使用EDMA3驱动

yyj

1 n% b* d6 {" b1 Y; C8 k. C

1. [code]EDMA sample test application
   % [  s! N1 G9 O, L* ?% Z9 O! j# W( p
2. /*
   - V  T3 }+ k: W- D& l
3. * edma_test.c
   
4. *
   ' {. h( I6 ~+ _
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
   
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ! U% I! W2 S3 d  F2 L8 }3 i
14. *
    
15. * This program is free software; you can redistribute it and/or
    + |" i9 J% J7 I, w6 b
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    ; L, v+ o8 O3 x4 e. a& ?7 t
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    5 n! J& D; |3 y
20. * kind, whether express or implied; without even the implied warranty
    9 l7 H: F* c. `# y  F, Z6 P8 y. D
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
      `- s7 B  _- ?/ o1 u5 y
23. */
    # Y; d1 S+ G3 G) |# t
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ) d$ R$ I% S. ~! u
29. #include <linux/interrupt.h>
    3 l4 Q$ y" a: R% h
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    8 e9 G& l& n/ f4 L0 L# {8 ^; }
32. #include <linux/sysctl.h>
    * }4 I7 z% L! _- X' R8 T- Y& c' b
33. #include <linux/mm.h>
    ; E6 o4 C' b+ z# Q1 ~* o1 V5 v
34. #include <linux/dma-mapping.h>
    7 u! X. L# ~9 Y: S% A
35. 
    7 L  d, V* m) ]
36. #include <mach/memory.h>
    , g$ k* L( ]" @+ p0 H/ o
37. #include <mach/hardware.h>
    7 H+ V! t9 |, X( Z- ^) @3 |
38. #include <mach/irqs.h>
    ! k# D2 k8 }8 q
39. #include <asm/hardware/edma.h>
    
40. 
    $ u/ O! k5 F; P# O+ Z( ?$ x" r
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    5 L7 R- i* O/ @2 T2 H! B8 s+ Y
43. 
    # s8 c# ^3 F3 g$ q7 w: h8 S6 i
44. #ifdef EDMA3_DEBUG
    4 [0 t- d( ?2 F! Z7 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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ! V* T; A  h' B
48. #else
      G/ @" P+ o4 `4 L- W
49. #define DMA_PRINTK( x... )
    9 U: M* X% d. J7 F4 u% Q
50. #define DMA_FN_IN
    + ~6 t2 \% K* W) i
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    7 ]! j% K) z5 p# l4 T/ g
56. #define TCINTEN_SHIFT               20
    , N# R/ t( s0 l3 I3 M( _
57. #define ITCINTEN_SHIFT              21
    4 G9 H2 I& t+ A) a- h* {0 M
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    3 S! s2 H9 o% ]3 u# w0 k, B1 L
63. 
    * x, R: I, b8 ?$ V& m9 b
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 r& u: [& |2 C, Q0 u
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
      m% L$ F% M( {3 g7 V& J8 v
70. dma_addr_t dmaphysdest1 = 0;
    8 }* c- c" y2 g1 b7 t, ?
71. dma_addr_t dmaphysdest2 = 0;
    / B  I: o' @+ X
72. 
    ! t+ [0 F- ~* t) |9 a7 z
73. char *dmabufsrc1 = NULL;
    , @! Q* M9 _/ m9 m
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    / |, W" s( [7 h  B: F- O& N
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    4 f) t2 I5 J( _* k& y8 h, p
84. module_param(ccnt, int, S_IRUGO);

复制代码

- S. s' d: u+ e, Q* j8 }& L( {
      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。
. J: [4 X# F# Y4 }. d9 q     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

. m8 j2 V$ X, ~. B# I- d1 o