OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   ; ^3 A# j9 c' Y4 u% P' Y) p/ t
4. *
   ( V1 f5 @8 B3 b. o( \& D; |8 t2 _
5. * brief  EDMA3 Test Application
   ! ~, ~; r7 `, g- N1 a
6. *
   
7. *   This file contains EDMA3 Test code.
   1 \6 Y& d" l. W7 `$ Y
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. *
    ' r; @# E2 ?3 g
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    , ~' E/ u' v: Q; k5 C
16. * modify it under the terms of the GNU General Public License as
    - D: {! R0 Q8 ~% k% M7 _4 h
17. * published by the Free Software Foundation version 2.
    
18. *
    " j$ z9 D" b! x+ V. P; I
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    " {! ^  B& a, Z6 l% \# V; I0 J
20. * kind, whether express or implied; without even the implied warranty
    0 G- V6 B: [  \7 y6 u6 P2 X# j; s
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ! s8 o" z8 l. I# \1 @9 F
22. * GNU General Public License for more details.
    
23. */
    
24. 
    9 ]" E+ J7 u0 D9 j$ K6 w" ~
25. #include <linux/module.h>
    : k3 K5 U7 p; o% L- N
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    . q& o' @' v) Q2 g) [/ Y7 ]
28. #include <linux/types.h>
    ) R3 Q+ U& ^: Z* _% D& U
29. #include <linux/interrupt.h>
    $ a( L9 O' e+ t1 q0 e
30. #include <asm/io.h>
    $ c4 O% P8 H( e2 g
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    7 L2 G; W+ A, d
35. 
      S, A" q6 o/ m  ^; r
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    , _! P$ G  q' n' `3 i" ~3 K$ X
39. #include <asm/hardware/edma.h>
    
40. 
    4 d, X' ~4 K2 @, A1 i
41. #undef EDMA3_DEBUG
    # q8 |! L; f8 u1 @; e1 r
42. /*#define EDMA3_DEBUG*/
    5 z/ ?& t& n( w- \4 t& ]
43. 
    4 \* K# e$ l9 m( A
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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    9 i; I/ t" N. F8 n+ X
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    2 R: j* c' y+ H+ u
52. #endif
    + K- W# g* c( a+ |& b
53. 
    8 W6 {$ x$ @" m  t4 \
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    7 `7 O# z& v; }" Z6 [
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ; P1 ^5 x5 D" @
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ) h7 r' N  ], x  t
60. 
    6 r- b+ @9 C/ b' W0 l
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    1 \, n' W' e9 H7 b) H0 s( U" e
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    9 `- F- i! N' X. s6 ~. F2 ]. Q- ~
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);
    + o: k# J1 `0 }& G( T3 n/ S+ v
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    6 ?% F7 \7 O- Q! N# p- b
69. dma_addr_t dmaphyssrc2 = 0;
    * D  p  H# {" H
70. dma_addr_t dmaphysdest1 = 0;
    0 ~% ?; A/ e2 w/ n, @; M9 _2 M& `
71. dma_addr_t dmaphysdest2 = 0;
    : X0 Z- _/ N& `& p
72. 
    ' g3 J% B' \: l  D* O& H1 y
73. char *dmabufsrc1 = NULL;
    0 K! W) z5 \- p. a
74. char *dmabufsrc2 = NULL;
    , u$ b0 a! F4 y% t: L1 o, n
75. char *dmabufdest1 = NULL;
    8 `" |: D# L8 g3 e/ _- L/ }  C# M: Q, C
76. char *dmabufdest2 = NULL;
    * o8 u5 ]4 r1 D$ f9 V0 c
77. 
    
78. static int acnt = 512;
    7 v- X  N; Y# E; P
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
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

      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
* n7 u; D- @  c0 i6 Z/ B; w1 w3 ?- marm-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。
5 j, d- g+ ]/ i2 C! N% `+ W2 R" N     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
: Z8 N/ }8 y7 N# e
8 s( A  k9 n0 v8 e& N