OMAPL138如何在Linux下使用EDMA3驱动

yyj

2 e+ P( j2 j: L, _

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   4 J4 \/ I# E' m- z
5. * brief  EDMA3 Test Application
   7 \8 }/ w* I2 D7 z( ?
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
    ! a4 H% r" e1 S, m2 a* y
11. *         TO CHANGE.
    + ?5 F% d: x, T; T0 [
12. *
    ! l) B% E. _* C* x" e: q
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    4 L5 R* N6 Q: x0 g# ?  \- ?
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
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    # {7 P' [1 `2 C8 ?
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    # p# F8 |1 ^# s/ r$ l+ r
22. * GNU General Public License for more details.
    ( w6 D. Q% K% L3 X4 [2 l. D
23. */
    
24. 
    
25. #include <linux/module.h>
    / G% ~3 M2 ]& B4 Y& W' H
26. #include <linux/init.h>
    ; Y  w! x8 y# T/ }4 p
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>
    4 T( \; Z! S+ T$ n) N; Y( p7 d4 b
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    7 \6 E0 s5 L: ]1 e, }: W5 ]
36. #include <mach/memory.h>
    1 I# i, P! r2 `" [, o8 t; M( Q
37. #include <mach/hardware.h>
    3 Q/ a  `/ }. J6 @
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    ) y9 V( x# [9 s1 h; M
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    , ~5 F/ h1 s7 H; N
43. 
    3 d3 I0 _. B" r2 F7 P' @# N( L
44. #ifdef EDMA3_DEBUG
    / v# Z) O- c1 F5 I2 o2 w
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    1 @6 q/ B3 S. z) h' j' s
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
      c, J% f  ~: ?4 H( C5 G, E
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
      y, T0 S) x2 k, K# e
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    5 `3 ~4 q' F- F( t+ O& z+ O2 ]. r
55. #define STATIC_SHIFT                3
    % b3 ?; y7 S8 o; G; l+ c, K$ Q5 P9 j
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    8 z7 j) M, z: P3 ]# d' D
58. #define TCCHEN_SHIFT                22
      U0 R' y/ }: V3 z+ p& t
59. #define ITCCHEN_SHIFT               23
    
60. 
    " y: B! `8 p5 ^! _( b/ W/ g
61. static volatile int irqraised1 = 0;
    $ c' C) g( j: f, [% u
62. static volatile int irqraised2 = 0;
    ) K: u) J5 I; t4 }; l
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);
    3 `* u7 X0 k' r+ b/ m+ I3 I! c% i! r
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    ( _1 d; ~  c2 Z" w
68. dma_addr_t dmaphyssrc1 = 0;
    ; U8 u( m' v: G) P% _
69. dma_addr_t dmaphyssrc2 = 0;
    . Z8 S3 M$ m$ W+ F2 s
70. dma_addr_t dmaphysdest1 = 0;
    ' j* ~1 f! a, O) t5 n7 n  B8 X
71. dma_addr_t dmaphysdest2 = 0;
    ' E# q1 X2 Z, [- g& N' k- s
72. 
    
73. char *dmabufsrc1 = NULL;
    5 _6 N- S+ w5 M' p7 Y
74. char *dmabufsrc2 = NULL;
    * L, F: w7 w" m& D' M. J/ w' d
75. char *dmabufdest1 = NULL;
    0 u" x$ h9 F. U
76. char *dmabufdest2 = NULL;
    6 q$ G# A/ W2 i4 P9 }8 ?3 e
77. 
    1 i" H' l: x( h6 w% I& n9 R
78. static int acnt = 512;
    
79. static int bcnt = 8;
    - `* S! f# N$ a1 P8 Z. ?! L& i
80. static int ccnt = 8;
    
81. 
    ( j( p6 y! ?. A- K
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

, D  m: A8 B: e" \: [3 z1 L- |
) t; L) e+ F) ?3 ~) ^6 K& B0 A      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
3 N' H0 k1 N) Oarm-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。
- c; {- G9 {2 I4 e6 d# V     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

* f4 s. Y6 n: r4 }; ~5 d