OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   . P( D8 G% I0 p) b/ \9 g
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   & m7 \4 t' h2 V
8. *
   ' ]$ _3 @$ O2 w1 J) Q, m" Z
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
    ; A# m2 O8 G" I
11. *         TO CHANGE.
    
12. *
    2 x2 s- _# n; I5 R- m, Y
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
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
    & [& i& ]2 h* C" G# d6 B: ]
17. * published by the Free Software Foundation version 2.
    * S; B8 X. {& ^3 c4 c4 Y- q
18. *
    ' y5 T% N$ ~" Q- A, p" X' E
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    7 w$ p' N' T4 Z! E- O
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    6 f9 d3 x* ^- |% J1 W
22. * GNU General Public License for more details.
    3 N% Y3 ?4 j7 v* N6 _
23. */
    
24. 
    8 X& H: W* @% @! g. S2 E. v! Q
25. #include <linux/module.h>
    $ j" f# a- R; W
26. #include <linux/init.h>
    7 @- }. c9 d7 I* s) F2 }
27. #include <linux/errno.h>
    ) @$ s$ u+ `7 C2 W6 m
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    % ]1 m2 ?1 r& `! h: ~: t
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ) c2 w, \' U, l3 }9 c! B
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    & N# Q$ V/ M7 U2 p2 B
39. #include <asm/hardware/edma.h>
    
40. 
    # C3 K' {/ R4 S* P$ g* c, g
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    # ~3 @) [: m) B% L- @
44. #ifdef EDMA3_DEBUG
    - k' a& O. p0 A
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    9 O+ y, K7 @7 `) ]- `' R
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    * g/ X2 K+ e2 i7 D) U2 H. L
48. #else
    
49. #define DMA_PRINTK( x... )
    ! M6 K/ V, q5 B' S
50. #define DMA_FN_IN
    7 ~! S& s: L# z+ Y, \
51. #define DMA_FN_OUT
    ; f+ ]) \# m  p; j
52. #endif
    
53. 
    9 X6 B- j- R  Q
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    " U9 {8 g' Y- K+ N
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ; T0 X+ T" f7 O0 b" s5 A: f2 l: O4 R
60. 
      z! t2 V+ t7 }$ Z6 ~
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
      ^& K/ }- x* z8 u
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    8 z7 b+ J2 V! s8 {& T% I  D' D& ^
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , g) G. O6 R3 R' k* m  N8 Y
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    1 @3 B; V( C4 ]. X
68. dma_addr_t dmaphyssrc1 = 0;
    8 a9 ^9 e' a  f5 f
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
      P: }0 U* ]) K* W) b( s8 ?2 \
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    # ?9 v* ^) O0 Y4 _1 ]9 d3 T. G
73. char *dmabufsrc1 = NULL;
    1 q4 l; }4 I" v: U: [% S% [
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    9 `/ D; `4 V; g4 V: M
76. char *dmabufdest2 = NULL;
    ) n: Q/ \, Q3 ^- B* q9 Q1 y2 n$ j; |
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ' o9 R$ t8 X% R, |% y! z  ]
80. static int ccnt = 8;
    
81. 
    % @4 t1 y+ d1 z+ P  k
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

8 f, |1 |/ b% S) W' `      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。


+ S% d, o, _$ r