OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ( X6 t9 e0 b, A+ `5 [3 h
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   ) N, }) f7 S: ]- k+ a: B* p: T
7. *   This file contains EDMA3 Test code.
   * x+ q4 X4 K# E, ], n* w5 N7 G
8. *
   . j0 y9 K# P3 y0 Y8 {# g
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   1 N; c1 b7 ]! B/ b: ^4 }
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    ' ]( H, e6 L- D. I$ m* N$ `
12. *
    7 ]9 }! @- I6 K. M
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    ; }. t9 x) u% ^) u: e
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    . |% E4 B) v9 J( x/ y6 a
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ' I  ?+ J6 V1 p9 Z; E) N
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.
    ) a4 Y  V/ i: r! v( {0 S
23. */
    0 F+ }' y- n' s& @9 y; ]
24. 
    * Q5 N+ K' m/ ?9 j1 d' r
25. #include <linux/module.h>
    2 z' p5 R: B( C8 @1 ^4 @
26. #include <linux/init.h>
    - f3 z2 K7 y5 R" f9 R4 _! L: r$ \
27. #include <linux/errno.h>
    2 M% E8 J" {2 M) t6 v: F2 X
28. #include <linux/types.h>
    : B. m: h# {; _. |$ ^4 P
29. #include <linux/interrupt.h>
    , H* ?, A; r" S! O+ ]
30. #include <asm/io.h>
    ) D  w2 e1 s7 \6 J8 u
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    / U% w0 n. @5 p. F/ `
34. #include <linux/dma-mapping.h>
    
35. 
    5 J; O% \5 }: v9 f% |$ x
36. #include <mach/memory.h>
    , R5 w% i- F$ [  k
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    0 X" \1 ~& [( k% K* E
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    / Y8 L! q% a4 G; s
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ' O. X: ?9 @- {# e8 s9 h; _
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    % _0 z0 e5 {/ c' F: @& s
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
      c3 }+ G. N; u* O% L$ E. p
52. #endif
    . ?; k4 b4 ^) M/ w4 ~- z2 S
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    1 H' t/ n* m! B. m1 J
55. #define STATIC_SHIFT                3
    2 W, y. p- Y+ c0 a6 T5 f  o. {$ s
56. #define TCINTEN_SHIFT               20
    7 ]- i: z" \8 d7 S0 F! B- g
57. #define ITCINTEN_SHIFT              21
    & b. l# f9 P; l  `
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    * a/ z0 S) g/ t9 Z. ?6 m8 o& P
63. 
    " O1 o! T0 K/ u, v- J( {0 k7 S
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);
    & t7 p' [) R1 ]  W7 y
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    9 [; y. u- B3 K& R
69. dma_addr_t dmaphyssrc2 = 0;
    3 u9 G; L6 `  N" W, `+ N2 |
70. dma_addr_t dmaphysdest1 = 0;
    * H  f$ b0 Z$ o. J9 O( S
71. dma_addr_t dmaphysdest2 = 0;
    $ I& @. X5 R" v  X7 ~' k
72. 
    % p& o/ }4 Q& |! ?; y# s
73. char *dmabufsrc1 = NULL;
    ! f8 l' L+ n2 o6 c9 l
74. char *dmabufsrc2 = NULL;
    9 ~9 x+ X! }0 ^! C! H6 c
75. char *dmabufdest1 = NULL;
    # c+ M/ g: o2 I6 h8 L
76. char *dmabufdest2 = NULL;
    0 w4 M& ]; _$ k! A% ?4 H
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    * v" |* C; ?  D' M: \0 ]0 N& K7 u
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    , ?' P; P4 [- U+ A* R! s/ X+ z
84. module_param(ccnt, int, S_IRUGO);

复制代码

, F. W: N- u/ y' C  O
      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。
/ v' V: Y$ j( |2 |( A     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
# X% B3 z; U, F( W

( H. k/ y5 N% x0 z  [