OMAPL138如何在Linux下使用EDMA3驱动

yyj

; `* g& N7 E- C6 G2 H; H

1. [code]EDMA sample test application
   ! k* \4 u2 q  X+ |# }0 J3 U+ o' P
2. /*
   
3. * edma_test.c
   
4. *
   8 ]1 k6 m9 Z% J
5. * brief  EDMA3 Test Application
   : h3 t0 i; S/ h# C) l/ R) J* }
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
    5 k& Y1 K- M# `; C% j) T. ~$ s
11. *         TO CHANGE.
    
12. *
    , o, ^. X! U- w
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ; s/ O+ k. r  q. f
14. *
    
15. * This program is free software; you can redistribute it and/or
    - W, `) u! l& {& F- ?  ?5 D7 H5 q
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
      T# T. f5 y+ v
18. *
    9 f( B4 X- [1 z1 l: Y) h
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    - |5 i$ v4 V' B/ M# a
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    % B; G, T& ~* i% Q; A7 Q& ~
22. * GNU General Public License for more details.
    . e/ k; u1 H4 B: L1 C
23. */
    
24. 
    # w5 g5 w+ g4 |4 P9 `! k: K5 m
25. #include <linux/module.h>
    0 X$ x9 c1 k) D' F+ ]" P7 }& c% w
26. #include <linux/init.h>
    + w+ z8 `3 c( L$ P' D; b
27. #include <linux/errno.h>
    4 Q1 p$ x5 K9 _
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    $ u% E* U; v* e9 g  N2 Z
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    / U/ }+ O4 ?6 E5 o- q# \( @+ _8 ^
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    1 D! Z/ x  l# G2 {2 C, q4 x' O0 Q
35. 
    ; k1 B4 V: G) n4 Y
36. #include <mach/memory.h>
    : l; r  @1 L* N
37. #include <mach/hardware.h>
    " q" L9 N5 M8 v& N& N9 L
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    : ~% W% [. a+ [/ o1 X( C: K
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
      X5 z5 @% o" v) u0 u: h
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
    ) e+ v7 v6 b3 ?3 I
49. #define DMA_PRINTK( x... )
    % j$ U  s) P$ e6 l. ~7 i" R6 F
50. #define DMA_FN_IN
    " b  M7 O7 Z% V. H. J# Y
51. #define DMA_FN_OUT
    
52. #endif
    . M: G) p/ s2 i. {' f5 v
53. 
    ( {6 M2 e. O. f( j$ Y7 a# W
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    2 Q8 }: v& F/ @  L4 u# E% Z9 f( \
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    , Y1 J2 l0 V3 \! i$ Y
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    9 a  e/ N5 K1 |3 Y1 U5 c+ {
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    3 R( R9 r- Q' I8 V( b; ?: C* k
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);
    - I8 L9 {" R! V5 B& J) `
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;
    ) y* D4 p' f6 U
69. dma_addr_t dmaphyssrc2 = 0;
    $ _- v, W, D: H6 `* M3 d, t5 B
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    9 W( j# }( W+ Q# v9 `. I) D5 r' I
73. char *dmabufsrc1 = NULL;
    . d! w' ?% q0 j
74. char *dmabufsrc2 = NULL;
    , ]) Q& `5 F! z$ q
75. char *dmabufdest1 = NULL;
      M: o2 ^1 ^4 r+ a  ]- a
76. char *dmabufdest2 = NULL;
    + `0 B+ ?$ r( l
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    8 e/ K* ~, R) r6 l. y
80. static int ccnt = 8;
    9 y1 X- W  E' ~- @
81. 
    
82. module_param(acnt, int, S_IRUGO);
    " L4 f9 X6 X. K+ d/ n" R
83. module_param(bcnt, int, S_IRUGO);
    ; r" ?6 @! ^3 c* G. u" U
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
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。