OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   & [9 u; y1 G9 g
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   8 K3 M: f$ E/ A! R: ~
8. *
   
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
    ) g' B/ h6 ?/ A; N& l
11. *         TO CHANGE.
    & j0 m7 L: k4 b. X9 T  n# P
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    2 H/ q8 T/ ]: K0 z$ O( _% I8 n, ^
14. *
    
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    # o- Z- y" S' p# w' p4 o1 q
20. * kind, whether express or implied; without even the implied warranty
    % c1 ~/ r# B, d* e$ s- p# ^9 E* d
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    ( |  m. [5 C+ E' k, H3 w+ d* p9 c
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    ; k; U* _3 a. T
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    9 i. u: \: G- |: V7 p4 j4 Z; a7 j
39. #include <asm/hardware/edma.h>
    6 V: O8 e1 D- f7 m( T% v, {
40. 
    ( G  C- [# K* R
41. #undef EDMA3_DEBUG
    1 W% p7 U4 L0 Z, R4 m) w$ L
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    3 T9 n- }% c5 R5 r; @; M& a
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    3 U7 P, ^4 V, ]7 j8 I4 n, ~) H
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    6 Q6 h+ Q/ R4 |
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    0 A3 \8 \7 ]" k& b) k
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    & Z* U7 [! R( r& |8 |' Y
60. 
    / R0 R, i0 a6 v0 ~& S
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    . r3 i& Y# s% a
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);
    ' i4 V7 k, A# B4 e6 x) ^" E
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    + a: M: o! k2 N3 N* w
67. 
    6 l1 F, y0 U  r
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    # F  T7 k+ h3 e8 V* V
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    - ?/ b" T. u: C0 Q; O3 k0 Z
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    & G9 g& q1 A8 s# {% D" z# ]
75. char *dmabufdest1 = NULL;
    * k, w4 d$ ]7 g$ L- a
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    0 J: E1 h" M. n! o2 u/ c7 z; i
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    5 O2 z0 }7 a0 o, L& E" r
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

  O7 |% N8 r" |- N
      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。
2 `; G& Z# w1 K     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
! ^* n5 K: L) H8 S7 i
, P3 L, b1 Q. y: j( v: h