OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   . O5 J% n0 x: B
2. /*
   / T+ L7 ]0 X5 _4 m8 h; r
3. * edma_test.c
   
4. *
     o/ `3 ~; t! i, l
5. * brief  EDMA3 Test Application
   & B" ~. R; o1 m+ Y9 Q+ j0 n& {" \
6. *
   
7. *   This file contains EDMA3 Test code.
   + O# Z0 z! j- n
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
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    % R2 L' v) \+ g
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    6 i  S7 e: q# n+ P
18. *
    
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. */
    % }4 N. Z, Y5 m- f6 U& G' c: ~4 m
24. 
    1 m! E' I- p4 B
25. #include <linux/module.h>
    * M2 w- X9 l: J  F" L
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    # u+ b' E, {8 R, p7 \. U
28. #include <linux/types.h>
    0 Z: O! H5 t5 Z* g: j
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ) {- v, W5 `: m
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ( d, S$ n7 [& G6 P/ X9 A+ Z
33. #include <linux/mm.h>
    , S8 q; R6 o. z, y
34. #include <linux/dma-mapping.h>
    
35. 
    2 |. }; H# ]; q8 V& N, l4 X
36. #include <mach/memory.h>
    3 v! ~; v2 X9 j. d$ E3 Y" k1 K
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    $ R4 p( h4 d4 W( L" G4 ]( j
44. #ifdef EDMA3_DEBUG
    1 u0 x" `. H1 o! |1 V& P
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ' R& M: O8 x  e  Z% b& o
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ( p3 a; Q6 b2 d  \  Z4 @
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    ' H- z4 b6 E$ ]/ V2 [* m
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    2 D. r; n; ?' x! r( v8 a
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
    
57. #define ITCINTEN_SHIFT              21
    6 e# A% L0 |: Z% j. Q/ J
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    5 g  L  Y9 _6 L& A! M
60. 
    $ G5 g" p* s6 s- s) }8 g* K7 U8 h; W
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    # v4 z: r$ f. ^9 c1 k# I3 c6 n  p
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    6 Y$ Q& f, B" }* B, a( n' H, ~
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    . o$ R$ K: A* M% p! g) g+ m3 _
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    5 G9 P0 q; P$ N6 a" P' Z
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;
    
72. 
    , `  F4 W0 k( V- E
73. char *dmabufsrc1 = NULL;
    # m$ E: j: Z0 o
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    " I9 L4 t* g9 K$ w6 y
81. 
    
82. module_param(acnt, int, S_IRUGO);
    : i6 M6 m, Z* h4 k5 m, D) T
83. module_param(bcnt, int, S_IRUGO);
    2 X4 m% e2 H& L& t
84. module_param(ccnt, int, S_IRUGO);

复制代码

8 G9 a/ h, {- m/ ]4 _+ o/ z) i      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。
% x5 ~: s+ m2 F# ?. h3 [