OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   9 G6 V1 W. R- L8 p, i& u: m
3. * edma_test.c
   
4. *
   0 |. z+ B3 o  t  a2 v1 t# I
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.
    - T% T* W8 O7 i) N; }9 \, D" G; _. d  o
12. *
    5 D/ f6 \/ g! t& E2 Y
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    7 H# K: N5 \* I( _# z. U
14. *
    6 }5 K4 `, V5 _8 `
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
    ' h$ X" R# Y* Z* }( h
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
      L) r2 f' f0 C$ v8 Y
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.
    / q) v3 {! r5 ]! B" _6 B) t  f
23. */
    # a( l2 I$ G3 p
24. 
    
25. #include <linux/module.h>
    5 c$ u1 D6 D& u9 P& v1 b% B
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    ! g/ ^) C" T2 }, l" J& W
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    2 o2 @$ m0 {0 S  s, }; W. j
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    * X: o& }0 f( }
33. #include <linux/mm.h>
    6 J5 w2 h6 K6 O7 s
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    # `4 C* {8 d$ h  l3 F# Z
40. 
    + D7 `, H6 T# y) C& I. d
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    , ~& B: q9 c$ M4 }" N6 _2 ~
43. 
      D4 p; z4 Y2 }5 X: x
44. #ifdef EDMA3_DEBUG
    ; `) G, z- a8 C) c) n
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ) R, O& ^+ D. a; {, I; w& m* n- A: M
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    9 W# A9 `, ^# A1 H) _0 G* U
48. #else
    
49. #define DMA_PRINTK( x... )
    / M; `% m+ T* t- t% |$ Y8 n/ G
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    / e- u) l6 b" Q
55. #define STATIC_SHIFT                3
    6 a% V7 U" P& _  }
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    7 Q* H+ O2 I+ I: }& }; D& S, j
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    " P; M) E! H  F) J7 V/ R. ]
62. static volatile int irqraised2 = 0;
    % y( g' i! E6 U- [- T
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    2 n% Z7 _1 M# r5 @/ U' c) S
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. 
    7 J/ e% s5 Q- u7 G, s. J5 ~
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    , s7 k2 V. o, w8 v
70. dma_addr_t dmaphysdest1 = 0;
    + N- w6 J+ q1 q7 y" D
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    2 }1 d% Y9 M& x/ m( e* |' X
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    : k1 g1 I4 ~2 H; {
79. static int bcnt = 8;
    - E, k0 t7 W  K" e4 Z
80. static int ccnt = 8;
    0 ^' @5 I. E( i6 O) K3 P' t
81. 
    . Q/ ~6 ?! r6 }" M6 D, `
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

! A7 [7 B% n( {# R! Q3 J      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
1 h9 X2 {+ h0 A6 }8 \5 j8 Aarm-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。

! K! e+ l9 h. P& y- x
3 a7 O- i; u1 w