OMAPL138如何在Linux下使用EDMA3驱动

yyj

# W- C* e6 |: \. P0 \3 g; \& o

1. [code]EDMA sample test application
   " K2 F) o( E/ C( ]  X
2. /*
   ! A# e" R* a( W" K4 M3 x
3. * edma_test.c
   4 ]3 s+ O: l7 }5 X5 J5 P7 P
4. *
   0 @2 K3 n' D& q8 g
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   6 T$ d, y/ A, u$ E& U/ h" {
8. *
   ( P( c: d3 f# F5 x  O" U
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   3 L( r6 {, _8 `0 t
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    " O  \/ v5 H5 l) ^6 ?
12. *
    , N& V! }8 }$ t& E
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    % `9 H' n0 R0 [
14. *
    3 G6 E$ c3 l5 p
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.
    * t) m2 C8 i# V6 e* i) Q
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    5 w* O- r4 s2 h: I
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ( Q+ m$ x- H/ \4 ^6 H  l/ ^3 q
22. * GNU General Public License for more details.
    / B4 v2 a! P# U( R) I
23. */
    / O7 d0 R. i* P( z  l
24. 
    $ ~  G* V# V+ T6 j! Z5 m
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    $ l  m* k4 d8 m7 y9 G
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>
    " H0 L$ t# S- h4 C" e
32. #include <linux/sysctl.h>
    % ~( v" `+ @  I# \% p
33. #include <linux/mm.h>
    ( r8 E' V  o2 {0 y1 {& R
34. #include <linux/dma-mapping.h>
    . h+ V! H% M8 K8 T; Y
35. 
    
36. #include <mach/memory.h>
    ) C: q) h2 ^+ H3 E
37. #include <mach/hardware.h>
    % ]6 |6 o7 ]4 j- f, ~/ k
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ; K" ]0 k( N$ c: Q. B+ v3 ?
40. 
    5 B" J  A' x( U. U
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    5 @0 H8 w4 W- A1 C3 X2 w
44. #ifdef EDMA3_DEBUG
    7 J  C6 @) ?; B( M+ p
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    9 |% J, m, g9 }8 [
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    9 }; p8 v5 |+ b  \# G
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    " h* ]" S: x9 x5 r1 g( g
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    ' P' d% F9 z* J/ Y! U9 u& V0 d
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    : s# @) D$ s- O# {. S
58. #define TCCHEN_SHIFT                22
    4 m# F$ B( B6 i2 n
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    4 o- Q2 ?) V1 s. L
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' n( F" H5 P" E6 n3 }  Y/ Z
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ; @) \9 F6 b# O) m2 n
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & P% S$ h. O4 w
67. 
    5 P8 O" `) g4 A9 v9 b" @! B
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    6 C! G% N4 j3 H- g
71. dma_addr_t dmaphysdest2 = 0;
    + _4 A1 {2 B7 D% [7 i
72. 
    : {  ?& s  ^5 w
73. char *dmabufsrc1 = NULL;
    , @/ d& v4 ^( B1 Y
74. char *dmabufsrc2 = NULL;
    . V) z" p+ M3 |$ e
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    5 P1 {5 ^, [# ~1 B# d
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    1 o% y$ N% ~0 ~, a8 I1 I
84. module_param(ccnt, int, S_IRUGO);

复制代码

5 m2 Y6 \& U4 O: A2 n- p5 J
8 R$ O: w( p1 m1 ~9 S. s8 d% s" A( @8 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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

3 n( M. Z5 U6 M# G) ]/ U