OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   6 s( _1 L6 x! @  h$ Z$ G- c
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   $ i( ]# O) a( o# u
8. *
   2 {: i2 Y& N6 y5 d9 T& t
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   / z5 E2 e9 s. M2 K
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    : c: c/ S; |! O
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ' }% Q' J" R) y
14. *
    
15. * This program is free software; you can redistribute it and/or
    / E1 g9 r6 o6 s
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
    
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.
    * U- X$ N, ^; g9 }: c9 [
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    ) T# N. C4 r" s
27. #include <linux/errno.h>
    & I  U4 r5 g1 {- q2 j4 a
28. #include <linux/types.h>
    5 E* k# @7 T2 F4 O3 C& r' S. h) n
29. #include <linux/interrupt.h>
    ; g. S4 N2 z) s* [+ j) Q
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    3 _9 v/ ~5 Y9 c* [5 Q& S/ K
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ) H3 h9 x8 q  L4 X$ t
35. 
    $ Q. B* v/ v* b0 ]  T: c
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ! x$ `8 N. V8 B) n0 [* L
38. #include <mach/irqs.h>
    # z# r/ y6 Q( W+ S
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    & K* z0 I, F- a
42. /*#define EDMA3_DEBUG*/
    8 c- \4 g7 g& e
43. 
    
44. #ifdef EDMA3_DEBUG
    & u4 Q6 M6 N, U. 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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    ; @+ m9 D* x2 j# u! W  P  R/ F
49. #define DMA_PRINTK( x... )
    4 g- R; W0 D( i8 V+ a. H
50. #define DMA_FN_IN
    ' X* a- }# J! a! p/ f6 {
51. #define DMA_FN_OUT
    2 C8 A/ [8 U# d. \$ V/ [
52. #endif
    
53. 
    - q# u( b1 {2 i# t! g
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    - x! H3 [+ f3 o' E4 z
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    # X# E- f0 N, A+ Q3 k3 C
59. #define ITCCHEN_SHIFT               23
    7 \! b! O* g1 s, K6 a& i
60. 
    5 ^* Z3 N' y2 `
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    ' N( y6 \& Z6 m7 O
63. 
    6 x/ M: {8 y& B' e' \& @
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);
    ' ?! k' \# _7 r. e; S% s6 B
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;
    / [1 y7 U0 p* C& u
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    ! i" Z4 C5 a( F) R# Z! w
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    $ o1 M% {  o$ X1 p/ a
74. char *dmabufsrc2 = NULL;
    0 A5 f  J$ K: c3 X. v
75. char *dmabufdest1 = NULL;
      }& T. q5 E3 B: g
76. char *dmabufdest2 = NULL;
    8 z  X  u% T. G+ ]4 Y
77. 
    - `% V, {# j1 [) ?7 {
78. static int acnt = 512;
    8 d( c$ S  y, T1 }6 V7 E$ y$ _$ K
79. static int bcnt = 8;
    4 q" I/ K9 A- K& S9 D! X
80. static int ccnt = 8;
    ) ~# W) r3 ]: E- U4 w0 X& u& ~6 m. p
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    1 _$ D0 W& W+ x1 s; [7 Q
84. module_param(ccnt, int, S_IRUGO);

复制代码

+ U8 l7 J9 T6 p8 u+ R4 Y
      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。
# r  T8 T! p$ j  K  N* E     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。


, M9 U* I2 f$ K3 p! t3 D