OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   - o& E, k. c1 Z) h
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   3 o& [) x! q! @$ o2 [
7. *   This file contains EDMA3 Test code.
   1 J' J0 G2 _1 T& L/ p
8. *
   ! G. P/ j/ u) l5 O% y0 T
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   4 u$ n0 o% }& T- ]* v& @6 W
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/
    . R5 g# A, _6 X! K
14. *
    
15. * This program is free software; you can redistribute it and/or
    * s1 N$ J8 J: g9 ?' C
16. * modify it under the terms of the GNU General Public License as
    6 m! p% \1 w8 z2 V; f* z" ?8 c
17. * published by the Free Software Foundation version 2.
    & b( H1 H/ _# I: |
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    0 [, r% i' F2 u5 \" |) O
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. */
    
24. 
    
25. #include <linux/module.h>
    & S! R8 ?( L" Z. X/ ~! l! a
26. #include <linux/init.h>
    , n3 K! L1 i& U! B9 }" P
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    : N7 ?0 n4 P! i1 G0 R
29. #include <linux/interrupt.h>
    ) B9 P* W, [- L- Y' y
30. #include <asm/io.h>
    ' ]$ ?2 ^5 k& p! s3 G
31. #include <linux/moduleparam.h>
    : _1 |7 Z  T) f6 x! F
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    . H( t7 K3 [/ I- h' [, H6 C
35. 
    ' J7 E( [! J& u5 \* P* d; _
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
      H. N6 m& R0 r/ P! p& i
40. 
    " j3 \& }1 y6 K2 ]: t# C" v
41. #undef EDMA3_DEBUG
    5 j8 e% S" v: @3 ^, f
42. /*#define EDMA3_DEBUG*/
    % ~* `6 F) s  C  d- W
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    + s! M5 H5 b4 h% q7 e- d" Z$ ?, u# D
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
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    2 t9 c- G' K) G. c# Y+ r) N
51. #define DMA_FN_OUT
    
52. #endif
    % j5 K/ v* H% c8 |, S9 d% b* Q
53. 
    ' k/ |; P/ J4 @! v! D* G8 `
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    ! C) [/ U, r8 i# l. B2 }  B4 p
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    % `! d2 y$ i* c; L) E- O) [
58. #define TCCHEN_SHIFT                22
    / a/ f0 ]; c$ a: u# c
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    . k$ E2 M, ^, R
62. static volatile int irqraised2 = 0;
    7 p$ T4 z0 \8 s5 i/ [
63. 
    ; w+ o. @# M9 L# l# t& L
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);
    . O4 b- ~3 E" c" J! g
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    7 v3 Q6 ]# v% _9 |4 E
68. dma_addr_t dmaphyssrc1 = 0;
    : B) K! U' O& `! h
69. dma_addr_t dmaphyssrc2 = 0;
    - S# a+ J: A. M* Y5 r3 a
70. dma_addr_t dmaphysdest1 = 0;
      N; ?. C( c) P  Q0 e8 e3 j
71. dma_addr_t dmaphysdest2 = 0;
    ) t1 g+ e( E: m. [8 Y6 U1 j
72. 
    4 O) C7 {& G# ]
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    " K& O+ ]7 @& Y! P2 N
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    % g7 U0 H$ K* M/ v+ w& E
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    / b2 q0 f' D2 b9 b5 a( H+ b
81. 
    - N) [/ D% q( x
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    + v& T. O1 G% o+ ?" `3 h% v8 W$ ?  r
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。
: ~5 ]  K$ p, y, n; Q$ 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。