OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ; w& ~4 A- b/ ]  r# e# N
2. /*
   
3. * edma_test.c
   $ L; y" d0 j$ Z; O& K# S& ]( X
4. *
   
5. * brief  EDMA3 Test Application
   . }& D( u% _0 B- I9 `5 t4 _
6. *
   
7. *   This file contains EDMA3 Test code.
   1 A; [! v: R2 y8 Z+ y  a. b: g3 t
8. *
   3 O' n+ v- n: `8 O" a$ u
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
    
11. *         TO CHANGE.
    ( E% L9 [6 @, c& [$ [
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    2 E8 n7 r0 v2 V+ f
14. *
    % |; Z) i) Y) V; n
15. * This program is free software; you can redistribute it and/or
    / B) {' l9 ^" J
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    , L2 T! m4 D+ N. H) L  u4 D$ t
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. */
    ) J* p+ g  N$ ^8 j
24. 
    " R4 H" p/ H3 n+ p1 S
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    7 K7 }$ Y+ N% N& e
27. #include <linux/errno.h>
    - v6 g. |# o* Y+ k
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    * f' Q( b. v) s% Q
30. #include <asm/io.h>
    9 K4 o" d7 y% M, m4 _
31. #include <linux/moduleparam.h>
      Z+ k* w) T9 `  g+ z/ ~
32. #include <linux/sysctl.h>
    & y& |+ R' u$ E5 \7 G7 X/ ]
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    # D& c+ b( B$ r- R2 I
37. #include <mach/hardware.h>
      Q3 ^& V# G$ R& j, D* k- w
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    $ c/ D  I& D7 c1 E- ~
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ) J8 x- j) Z% V0 _) \$ F- u' J
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    4 k% [3 y# h4 O; ]1 y4 ?
48. #else
    
49. #define DMA_PRINTK( x... )
    . I& W9 ~# \; m0 p5 V
50. #define DMA_FN_IN
    * V" F. P5 {4 x  R* {
51. #define DMA_FN_OUT
    : S# u! J6 Z/ I+ d% n) g+ }# t
52. #endif
    5 ?; S/ d  z/ h
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    ) m' l7 g4 X/ X  E. c; l: Y" ~
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    * P: T5 l  h7 c6 F& h
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    & J% v6 l: V4 E/ L9 A
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);
    7 M9 |8 _: L: Y4 l# a: v- \, z
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;
    
71. dma_addr_t dmaphysdest2 = 0;
    1 f9 E6 o' a* `* f% M
72. 
    9 m1 i8 f+ N) q9 C9 w( A$ h" j
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ! w# ?$ K9 H7 V( `4 ?
75. char *dmabufdest1 = NULL;
    ; v- U3 @2 c: j6 }# N1 F6 n
76. char *dmabufdest2 = NULL;
    * ^* u' T1 h, R) z1 ]8 d3 O2 b* H
77. 
    # r: C+ i" M0 b/ Y9 O3 B  m4 w
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    . x$ K4 p- Z4 o/ h6 l/ R  y8 h
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    ) {# o* b/ W1 v6 I; F
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。
8 Z& p, v! K0 }2 m     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。