OMAPL138如何在Linux下使用EDMA3驱动

yyj

( S4 u4 }, z* Z

1. [code]EDMA sample test application
     |2 T- ^& T! E: v4 p- ^/ Q. ~% M6 X0 |
2. /*
   
3. * edma_test.c
   7 P2 P1 i4 [7 W( _7 {; q- t
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   3 j2 X' K7 ]8 q# {$ D
8. *
   $ N1 N6 v% D6 }
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   3 y4 Z3 |9 V$ P! b7 T3 d
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    % }4 A/ ^+ G# @# s$ Q. L" d+ U
11. *         TO CHANGE.
    7 B1 v* g& V5 ~1 f
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    ( X3 B/ c1 V5 D+ }! _) e
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
    * M  |! _2 r' C
17. * published by the Free Software Foundation version 2.
    ! n: V& w! g" n7 }8 b
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.
    / Z' u, S; K) z6 F4 n; l) j
23. */
    * ]. E; D  |, E$ ~* l0 K# ?( c
24. 
      v! H5 p2 a0 P% O7 {% h
25. #include <linux/module.h>
    5 i" P$ u/ W* I! p
26. #include <linux/init.h>
    % R6 Y) i" F4 T/ N
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ( I7 Z+ @3 H+ H+ o8 W$ @
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    , R* j) X* O$ J
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    9 v8 i: ?8 t$ v' @4 U0 L* |
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    6 s; R+ o! a/ }
39. #include <asm/hardware/edma.h>
    
40. 
    7 Y7 y5 k$ T1 c" ~/ ~0 f" K
41. #undef EDMA3_DEBUG
    5 {$ m% A* m, G( F! f2 M( l
42. /*#define EDMA3_DEBUG*/
    9 h9 X6 A+ G& I$ D$ ?% ?
43. 
    
44. #ifdef EDMA3_DEBUG
    $ Q: O% U' B$ R' b: S% U/ ?* Y
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ( @  F  u: m8 B; f4 X5 j0 H
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    : v$ k( c9 a3 H$ k- A
48. #else
    ( [0 _% J' u: O6 a4 h5 s
49. #define DMA_PRINTK( x... )
    5 E: @# F! o: X/ C
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    5 H. e8 E( I( D/ P5 @
53. 
    0 {: @$ B2 O2 K# ]
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    - K6 T1 F" L* b& H# C* Z
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
      e5 E. N9 }) r, h: P0 _, n* b: m
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    6 i9 n$ Y" t% z) {- X; ]+ f
60. 
    
61. static volatile int irqraised1 = 0;
    ( G/ J  [  n9 O3 J9 M$ B
62. static volatile int irqraised2 = 0;
    
63. 
    & n% Q& c# X- 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);
    
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    8 ~  I4 {+ t+ r% @* g
68. dma_addr_t dmaphyssrc1 = 0;
    % w8 G/ y9 x+ Z% [
69. dma_addr_t dmaphyssrc2 = 0;
    + ~+ Q+ k. E9 S3 f4 d( R% |
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    $ D$ p! \5 {+ v! s  h. x- U
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    3 G4 B( M; p8 u1 u1 \
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ; A; Q8 G9 j) |% d7 P7 X  k
77. 
    4 W7 {2 t( j& S  o
78. static int acnt = 512;
    4 Y" \( o& W' N% I$ J7 K$ [4 G' e
79. static int bcnt = 8;
    * j8 E, G' n0 A) R" w
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    3 F, s- X) J6 I8 E
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

8 E: ~: V  {$ i' m* F. {
6 w1 ^% v' p# `7 O      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
3 U/ i1 _: H+ s6 r+ @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。