OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ( c" L/ n6 f$ P& P% F  H  U; B9 ^
2. /*
   
3. * edma_test.c
   
4. *
   : t6 o( C* \! W* z
5. * brief  EDMA3 Test Application
   
6. *
   ; k: Y& X+ i( w& l. G3 a5 N+ l: K  L
7. *   This file contains EDMA3 Test code.
   " \$ J3 w5 a; k+ p
8. *
   : E3 b+ s! }# p2 i" ]
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
     w$ H/ w* w* l2 p4 P; _" b
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
      v% f6 D8 p& [1 v
14. *
    7 ]0 S: u! j0 S7 B
15. * This program is free software; you can redistribute it and/or
    : T/ |) E9 G: U/ _/ c8 Q; o
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    & W6 F) b1 f; B2 S, p9 r
18. *
    $ J' V! C6 Q! p4 x6 N
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
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.
    
23. */
    0 a- s7 d/ X+ a; y
24. 
    7 x$ o& C/ V. l* V1 l/ e1 v  |- d
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    4 g4 ]0 J' M/ {
27. #include <linux/errno.h>
    + ]% a# y: w+ T+ s! b% J+ U
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ) K0 E& b/ R! X% R
30. #include <asm/io.h>
    6 t, B: Q2 J  C7 ?, f
31. #include <linux/moduleparam.h>
    1 A3 K  j- F: A( x' m$ N
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    / V0 E6 p) _' S. n
34. #include <linux/dma-mapping.h>
    * s' d7 z' Z& A$ p- |
35. 
    : E' t3 f; H; M5 ~
36. #include <mach/memory.h>
    # N5 M7 F2 I8 @1 i
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    - O. D( @$ w9 q$ [, G1 H( \
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    + f% n' A/ o: D/ _5 i) L( K% q+ n
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ' \  X! t, k/ N! R! h9 m; G
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ) H- c8 T6 T1 j# J3 p4 i
48. #else
    & d* K" D9 q; |% ~
49. #define DMA_PRINTK( x... )
    * Y4 |* y# M" s1 s) V
50. #define DMA_FN_IN
    " f% Q% E7 z; Y  m& E
51. #define DMA_FN_OUT
    ; D9 X( T; V0 f$ I5 e' n
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    * g: t7 t. k0 ?4 M) ?) E
61. static volatile int irqraised1 = 0;
    - _" {" o& A6 E8 {0 Y1 l
62. static volatile int irqraised2 = 0;
    ' _- Y# e- o1 s" P2 e
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);
    : x2 u4 P% d& k. k
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ! I, K  X; W5 @1 {+ `) J
67. 
    & f( f. i) ?1 ~7 _! a% j
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    ( S0 x& D' X( X6 {
70. dma_addr_t dmaphysdest1 = 0;
    % k5 g3 p7 s4 P- v1 O7 M/ u: T
71. dma_addr_t dmaphysdest2 = 0;
    ( |1 j3 g5 T  \* s; d( m' R
72. 
    
73. char *dmabufsrc1 = NULL;
    : R  s6 t0 e0 o, v& E3 g' T; r
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    ' z2 j" k" ^" u- Y
76. char *dmabufdest2 = NULL;
    6 a& M' j+ m9 b' v; t6 X  [8 k
77. 
    , g2 d$ e4 l+ f& X
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    6 P5 B$ d7 O8 z7 b* [% O" V. M' S' a
82. module_param(acnt, int, S_IRUGO);
    ; L9 U' y" D3 T: S. [8 a& V  _
83. module_param(bcnt, int, S_IRUGO);
    , r( h. h9 K% E6 ]/ u- M2 w1 X
84. module_param(ccnt, int, S_IRUGO);

复制代码

- X6 a& b8 L! A- O3 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
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 q6 |7 |0 n! u  D& _

5 |& N/ R: H6 M$ K/ \7 L0 u/ O0 @0 f