OMAPL138如何在Linux下使用EDMA3驱动

yyj

0 @9 s# \; @' `( L

1. [code]EDMA sample test application
   
2. /*
   % C8 _- R3 J( O9 E: K% ~& i
3. * edma_test.c
   ! D' _3 d: m' S6 b: K
4. *
   3 _5 K2 I7 x2 |' w9 n& g
5. * brief  EDMA3 Test Application
   - m) _3 A, Z' Z$ X
6. *
   , H( o- v* h1 [  T4 D
7. *   This file contains EDMA3 Test code.
   
8. *
   8 E0 y1 F- k, r& v' O
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   5 a8 E  ^4 q: J6 r* H5 L6 s
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    , Q" u9 T) Y5 O7 A% G: `
11. *         TO CHANGE.
    
12. *
    9 a: b+ x1 w  Y% ^1 f
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    5 V9 V1 R* |1 T$ ~9 z  i& [7 T
15. * This program is free software; you can redistribute it and/or
    0 x. {: J4 {+ M1 M; u4 K
16. * modify it under the terms of the GNU General Public License as
    2 o# |$ m% C* Z$ ?3 H7 B: J2 e
17. * published by the Free Software Foundation version 2.
    
18. *
    % j: {$ C5 ?* w6 i8 X! K4 L
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    9 `8 e1 X0 K. @/ Z4 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.
    ; _% \" c  f$ x5 m, U
23. */
    
24. 
    " _: p$ b' T" O' y/ }2 ]
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    * F1 Y/ z4 y9 d; Y5 A8 L4 T* D
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    9 g6 u- |! N0 l
29. #include <linux/interrupt.h>
    " k4 S( j; l+ R6 I
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    # C2 E% j% O0 K$ M2 l' G8 _
32. #include <linux/sysctl.h>
    7 X- X! Z$ e0 @: ?( b# H
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ) P7 ^1 p/ \$ c' d/ t: A
35. 
    8 w( n$ q) f% p
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ) ^, r: O6 f  ?! t  j8 W
38. #include <mach/irqs.h>
    ! ~" |( Y! {' i9 Q' |
39. #include <asm/hardware/edma.h>
    3 x. Y3 Z" G% r) t/ m
40. 
    # q; [! N' G7 v
41. #undef EDMA3_DEBUG
    6 q/ L) y2 P* C1 U4 @+ {/ p
42. /*#define EDMA3_DEBUG*/
    & z1 v4 ]4 I8 C
43. 
    ( T8 H8 C) J* ^+ L* i+ l( g) r
44. #ifdef EDMA3_DEBUG
    " r: N' D! g/ f2 r3 \  h3 r. ]) k. I
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
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
    / B  Y0 V6 S: L3 p9 w: F& I% _+ N; `: b
49. #define DMA_PRINTK( x... )
    ; d1 p: `+ j0 \9 z2 B
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    1 V/ o* Y) I2 x! z2 M
53. 
    9 D1 }; I% x, O0 g
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    0 p0 p! \! _$ Z5 E" }' b- d. k( D! u
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    3 m' v$ Z: S5 w9 u0 M- g8 X7 x
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    " a1 N/ N0 ^; s$ j, M% V$ g
60. 
    . F6 S+ b# p: v5 d
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    9 b2 s' M3 r. n' f5 h, j! y
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 V0 p# Y( l2 s
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;
    
70. dma_addr_t dmaphysdest1 = 0;
    : L+ @/ Y* [# n# r4 V* v
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    : _% x1 Z/ r/ d$ f* v8 R( j9 h
73. char *dmabufsrc1 = NULL;
    0 r7 p. W7 D9 t* w; z' g# M
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    & E- `  X$ F4 ~6 e9 {5 d
76. char *dmabufdest2 = NULL;
      A7 U3 P) {% J8 S$ g  v- K" G9 O3 p
77. 
    4 y0 q: y) L: @/ Q& V2 I
78. static int acnt = 512;
    6 X( p9 v0 s: n6 M
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    1 h; s& G% k4 {% o) n) V; V
83. module_param(bcnt, int, S_IRUGO);
    ' g8 C" n" L4 I$ B" n
84. module_param(ccnt, int, S_IRUGO);

复制代码

# c0 w% t3 R# b! f4 w      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。

2 R2 H. R- J3 u6 g, u% C2 l