OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
     ]3 ^; S+ I! v+ X7 T5 b
2. /*
   4 k) v+ `1 W1 z  a
3. * edma_test.c
   
4. *
   ( n9 j/ ~5 p0 ?: w: }
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   ( `: }0 @) e% [# q+ u4 f5 b
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
    / J( J4 I: g# _, `0 A. T1 A! C
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    7 a0 f4 Z8 p9 r  M
18. *
    5 B8 N3 x( k$ c$ \+ n* k2 D( Y
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    9 d2 |1 ^% j/ _! m, [) q( M
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    : J8 w* v* `( v
23. */
    
24. 
    / o- d1 U) U0 N! {" t3 i. ]
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>
    ; h3 L! U& e6 ^2 A" |# w6 E
31. #include <linux/moduleparam.h>
    # }5 M& F5 ~0 m: f  p
32. #include <linux/sysctl.h>
      Z) B0 Z4 u* [
33. #include <linux/mm.h>
    ; Y: b) k/ {) S
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    ; S+ r3 ~7 A3 y, r# z
39. #include <asm/hardware/edma.h>
    - Q, d: r. X- m7 x
40. 
    
41. #undef EDMA3_DEBUG
    : j* w8 L. ?( D6 W. {
42. /*#define EDMA3_DEBUG*/
    4 t* ~( K- q) A6 A' K8 [
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    8 @' c6 J! P9 M" F+ _# [
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ; d) U1 E3 k+ V+ d' l" u5 p
48. #else
    
49. #define DMA_PRINTK( x... )
    : |6 b$ |8 f: T9 P; J1 V
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    " z' y4 u* r6 X4 f4 l7 l) G
53. 
    * y. ^1 K( U0 Q. Z. z# M* c0 S
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    . |! Y4 z: n6 S. R& w
56. #define TCINTEN_SHIFT               20
    8 G# z- ?5 a5 u0 e' g. P3 L, @
57. #define ITCINTEN_SHIFT              21
    2 @2 P5 Z; K5 N4 ^$ g  T3 R
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    $ c4 F! s+ E& B) }4 R$ b, z
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    " L1 d% x4 f0 U) L9 q  N, Q4 G: C
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    / G3 @: u/ X9 K( ?8 m/ j9 l
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    + N" t$ }  J. Q* |$ M
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : h7 A1 [9 V5 x6 Q# f1 v7 H
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    - Y$ g8 f. W' o2 p: P
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    4 i. w0 r2 l- m  Z6 c3 P' G) `& j
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    6 x& D/ J$ K% X0 i# B5 i+ N9 Q
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    + T3 u" U1 h( L
78. static int acnt = 512;
    / A7 K5 }4 w2 P* @& l
79. static int bcnt = 8;
    ' D3 O4 o+ \1 M+ u+ ?
80. static int ccnt = 8;
    & F2 O% V; i9 ]" c! T
81. 
    9 D  c; O9 c0 K2 G6 F1 C% s
82. module_param(acnt, int, S_IRUGO);
    5 l( `3 i1 E' @5 k4 R3 M# S
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

# R9 T) W! I% V6 [) w! s- 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。
4 i, C3 R% c9 b8 W: j5 `