OMAPL138如何在Linux下使用EDMA3驱动

yyj

6 q: J0 g7 p* e# ~8 _; B5 Y

1. [code]EDMA sample test application
   4 g4 R& }& b( d1 S) f% B
2. /*
   ; o4 H1 _" K* Z' T* _0 G4 [& w
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   2 E* V0 z6 N9 D! o' _5 w9 ]
6. *
   + X, }2 p& U$ y0 o
7. *   This file contains EDMA3 Test code.
   % @. b6 v7 ~( E9 v
8. *
     M- j- Y) l* L" m: G3 d, u
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   5 r, O2 `% Q0 h5 q) }5 E! K
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    1 h, f1 K+ }6 l7 w+ k2 |
12. *
    / _+ T* u+ `/ P# f# y$ K+ H
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    - k/ G; w! `/ \1 \! s, e, C- e
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
    " k5 P4 k- O9 v' |: R- ^
17. * published by the Free Software Foundation version 2.
    
18. *
    5 s4 V7 A7 @! O2 O- u  \( |
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    * q3 T- l+ k, l& K* c0 Q; s: ^
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    8 o4 Q: k8 }! m8 [2 G
22. * GNU General Public License for more details.
    * I# v% C' e2 f+ p2 n
23. */
    
24. 
    - o6 Y1 ?0 L& [# c' r
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    + b. j0 k. `- @& D
27. #include <linux/errno.h>
    5 O2 t, C8 S% H  F
28. #include <linux/types.h>
    6 \/ E6 O" f& p0 d
29. #include <linux/interrupt.h>
    ; D3 D" l1 V% }7 A$ B
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    % u% m( T* ~$ P, e( j3 ^
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
      M% _% o" s" C( w7 ^
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    % V) P5 I1 N% b; R' k3 @5 ?
41. #undef EDMA3_DEBUG
    9 o! m1 O& ^8 Y+ c6 R
42. /*#define EDMA3_DEBUG*/
    * m/ Z: b& \2 f& t$ s* m3 d  w7 x
43. 
    
44. #ifdef EDMA3_DEBUG
    7 e7 q1 S& `& R3 [( ?
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    & ~4 @0 V* `. i
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ! t4 q$ b- D2 X
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    $ S  a$ {: e& j$ b
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    " h& I2 U& G3 O: E( x# [
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ( h1 U/ C& n1 b! A4 E
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    4 S, B) L9 E2 K1 {/ Z. E
59. #define ITCCHEN_SHIFT               23
    / K( D3 `* W' \7 E# Q3 e$ q" r4 P1 B
60. 
    8 `# E1 K/ }6 ?* F! L
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    % ]9 p# I  f6 u9 r
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : \. j5 t! c" A* Z0 z, p
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    2 f1 t5 E/ {3 G+ C8 C
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;
    6 w* ^1 Z5 j6 x) s0 T! u/ B
70. dma_addr_t dmaphysdest1 = 0;
    # E  T8 L; v- ?
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    $ K) L/ n7 w" `0 V. L
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    4 }; |( ^+ q0 w: Q; r( |5 s% P
76. char *dmabufdest2 = NULL;
    
77. 
    5 G5 M! P* s" L. Q& D5 B0 Z7 ]
78. static int acnt = 512;
    1 G- }, F  S3 F; p! O3 p4 s& s
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    2 }; V: p. b9 c
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    2 u4 ]4 t9 b. y
84. module_param(ccnt, int, S_IRUGO);

复制代码

$ H+ d' N! d4 @  C9 u      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。
# f3 g: A, t$ y' `     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。