OMAPL138如何在Linux下使用EDMA3驱动

yyj

4 u- H9 a: @8 _( K

1. [code]EDMA sample test application
   / K$ G- u9 F. |
2. /*
   
3. * edma_test.c
   2 i  j; a( M5 w' g. m) Z  f5 l
4. *
   
5. * brief  EDMA3 Test Application
   7 |' N3 A5 |. |) r! `
6. *
   8 I2 U. o) W& M) M8 |5 O
7. *   This file contains EDMA3 Test code.
   : a5 q" `  ]  a
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   - b' T- {5 }# B! h2 N; v3 `0 L
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    + ~0 w4 T- W% z8 I1 k, r
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 C5 E0 ]+ B& j$ a3 ]
14. *
    
15. * This program is free software; you can redistribute it and/or
    * d. z: t, r5 `/ s8 v
16. * modify it under the terms of the GNU General Public License as
    ; \1 A8 ^4 c) M
17. * published by the Free Software Foundation version 2.
    
18. *
    ' T( o. ~; y& S5 H, l
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    1 N' c8 E) L$ s" f) E! F, a# V& `
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    8 |% j: A2 h6 I* y1 _
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    3 k; w! Y8 M+ c" w
34. #include <linux/dma-mapping.h>
    6 F3 |+ ?. a, ]! E; ]
35. 
    ' d# C# g$ k5 f9 [: M/ r0 K
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    0 e+ |- X- N3 f" S& ~
38. #include <mach/irqs.h>
    * d$ C1 o5 U) L
39. #include <asm/hardware/edma.h>
    . h; ?3 F* m/ l5 G% o4 G2 v3 s
40. 
    " x9 k% ^, c) u
41. #undef EDMA3_DEBUG
    + C* ^* a1 K( I7 `, z% Q4 q6 e1 ]
42. /*#define EDMA3_DEBUG*/
    . ^7 s% H) s+ ^
43. 
      b) ?( ~$ Y8 `  h' a5 r( F
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    " K9 i  S+ U9 N- u: l# Z* l
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    : _. o- ~) I- P( C1 |
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    3 K) H0 Z  p1 U' K; J
49. #define DMA_PRINTK( x... )
    , Q' P; V5 n7 O4 I" F
50. #define DMA_FN_IN
    ) s+ a6 c7 i  Q  U3 C/ |
51. #define DMA_FN_OUT
    
52. #endif
    " B" X% s6 }) [9 b0 F9 m
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    5 z- J5 `1 U2 a- q" Z
55. #define STATIC_SHIFT                3
    ( Q' B" |8 g/ p
56. #define TCINTEN_SHIFT               20
    % k3 z9 }" C4 H
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    # ~8 I: v! @0 m8 }7 L0 a, ]6 D
60. 
    % I/ V, y# A. J% C7 f8 X2 ^% ]
61. static volatile int irqraised1 = 0;
    8 Z! a, t6 @3 a2 `6 P& s
62. static volatile int irqraised2 = 0;
    
63. 
    
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);
    8 x0 L; C. i* V2 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;
    * e) b  J4 _  R7 j9 H( B+ W5 ]/ |2 Q
70. dma_addr_t dmaphysdest1 = 0;
    1 O& e9 P5 O- y8 H
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ; h" k& h1 M' B. f5 S. k9 U. U
75. char *dmabufdest1 = NULL;
    * L/ B" n* T( \3 Y& D
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    % \) a4 E7 G; n. w  _
80. static int ccnt = 8;
    
81. 
    6 {+ [% i' U6 Z" U
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    + Z& Z) D# E8 e4 u& O! w
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。
* m- v$ G# }" F& C# y