OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   ( T  z, e: A2 R; V
3. * edma_test.c
   
4. *
   . ]7 A/ ^+ r  [# z5 }
5. * brief  EDMA3 Test Application
   
6. *
   ) M5 T4 D1 n4 ]
7. *   This file contains EDMA3 Test code.
   4 ]2 o9 b: i* v; {2 y. C0 w& u
8. *
   " x, I, c0 o& E5 h5 v6 C( S5 U7 F9 D' ^  Q
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   7 c4 v# d# k5 W2 ]* H) W/ b! m
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    ' `4 S# y) x; Z) D$ C' j; x; T
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    # t. M3 V4 `  L' K- S4 \
15. * This program is free software; you can redistribute it and/or
    5 j, d, j& C9 B' G8 A+ {5 {5 V
16. * modify it under the terms of the GNU General Public License as
    / i$ d9 D3 \: V+ ?$ t
17. * published by the Free Software Foundation version 2.
    . S7 t, E; F/ i3 k' p/ S/ f
18. *
    7 K; J7 _- m) R) W8 ^3 |
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    8 I7 O% f/ m; Q; N/ D. X
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    * I( P4 }/ d$ Z& M: D* a# n
22. * GNU General Public License for more details.
    . d. j$ Z8 L! ^' P% \
23. */
    
24. 
    9 T! @  @8 D7 R; d
25. #include <linux/module.h>
    - g8 }7 f+ B5 v  s
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    9 I; W) ], j/ G) d1 s
28. #include <linux/types.h>
    - F8 {; M" G8 \9 h8 f) Q! F, E1 n
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    2 C7 o( \9 P) `1 ?
31. #include <linux/moduleparam.h>
    + v7 y- s* [% y8 d5 Q1 G* ?  C4 J+ M/ N
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    1 a+ e4 k6 v6 ]0 S% I3 w. {6 z$ L* B; w
35. 
    
36. #include <mach/memory.h>
    - q* G2 t$ ^. ~7 [9 Q# [8 M) q7 o% @) c
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    9 N  H* ]( J% o0 L# `
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    ! S8 T  v) J, g8 f9 R6 S1 }, ?
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    2 r+ b$ ]  c5 ^( H: Y6 c
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
    3 `$ j: [) D& t4 M3 U& o& m, I
49. #define DMA_PRINTK( x... )
    $ g) v. O. J2 D( h
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    % B; O4 R& F2 ^- Q
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    / \* {, t2 M' [  c5 ]' _
55. #define STATIC_SHIFT                3
    9 R# F* |% N$ |/ |6 ?, T+ _1 l
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    9 k. A  s! O5 l& |" E3 n
59. #define ITCCHEN_SHIFT               23
    
60. 
    - J& u) m( A- k
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    1 |# w$ E& T$ Z5 Y
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : j) t8 U$ t2 s6 o8 @7 F
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' f- {7 x' ^. T
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    " ~. c: M. ?: w7 b, C2 ~' X3 p' F
68. dma_addr_t dmaphyssrc1 = 0;
    0 u* _9 ]1 r  N
69. dma_addr_t dmaphyssrc2 = 0;
    + _7 ?, W  [+ o3 V, y, J8 ~" j
70. dma_addr_t dmaphysdest1 = 0;
    , c; p$ p: X+ `0 Q
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    , y6 N/ }' K, l4 n- h* y
73. char *dmabufsrc1 = NULL;
    9 M$ ~8 e+ x% W7 k, @. a
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    # @  D* I; J! }4 a$ q) s. Y
78. static int acnt = 512;
    ; i- @  H) b. h7 a# V; a
79. static int bcnt = 8;
    & D5 L8 \4 D+ \/ D
80. static int ccnt = 8;
    ( w# A4 f$ ?6 w4 B
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    ) W0 m# N0 ?) B/ q# V
84. module_param(ccnt, int, S_IRUGO);

复制代码

2 W: w3 b3 ]1 A# z5 I
  |: n0 q2 h' w, O/ N8 Y      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
/ d6 i9 ~$ w6 V3 l) J. marm-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。
9 {) w' q5 S4 `) _8 V* t     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

0 O3 u/ t' m( N* X! M- j+ ]5 D; o9 T