OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   : G. Y0 `4 l% w; I7 X* @. t) E6 v
2. /*
   " z8 B* l% s6 n& Y8 e
3. * edma_test.c
   ; \9 S8 Q; [! Y4 y& @: L
4. *
   , ~& K- C* p3 H* O; s# q
5. * brief  EDMA3 Test Application
   
6. *
   ( {& G2 r/ t2 i) \. T+ Y) r
7. *   This file contains EDMA3 Test code.
   ' w/ \  A4 C7 j  A! n+ l
8. *
   8 q% _2 I, r: |. e5 M
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.
    # u2 P3 O. {/ X0 Z: W# I
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
    1 }) l% i1 t3 }2 N
16. * modify it under the terms of the GNU General Public License as
    6 W: }3 X9 X/ Z4 ^2 S# |
17. * published by the Free Software Foundation version 2.
    ; O% R! E1 C: W% w& Z. R
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    0 Q( l1 V% D% c' t" k- M8 ~* g
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    + Q0 Z* |# V; u5 D
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    ( b8 z5 W; N& R, W
27. #include <linux/errno.h>
    . ~" X+ [$ s9 K* ]( h
28. #include <linux/types.h>
    6 l# u$ D$ s! d! f& h
29. #include <linux/interrupt.h>
    , R; B3 ~9 Y6 A4 Z; c" F& ~" W
30. #include <asm/io.h>
    1 N( S0 O4 B+ t) z- g
31. #include <linux/moduleparam.h>
    . `2 I$ q- a4 \
32. #include <linux/sysctl.h>
    , e0 W' h8 f# Y. b0 E' K
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
      m3 H& R6 P; E# `8 K
39. #include <asm/hardware/edma.h>
    
40. 
    2 a. y. ?) C8 q4 x6 [4 G" W: l
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    - K9 a2 Q, q( x  s( _' Z$ 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
    " ~: ]4 g' D1 I) E/ p+ n/ K
49. #define DMA_PRINTK( x... )
    " e' B$ a$ a3 ~) l7 U. u9 D
50. #define DMA_FN_IN
    " f) P; L. G/ }& L
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    3 k/ j' E" g, p! g/ l
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    : o) i2 `& h1 |: `8 w* v- s8 F$ T
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ! @8 O( b7 s) x: H
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    # v# y% W" S/ ^+ D8 V" L
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    0 s; r4 f# ^. @! Q: L' {
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    9 B* |* J5 g( k
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    * A9 B7 m' N4 `+ ~0 I
67. 
    / S0 a% v/ J0 L' [3 T
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    1 L. x# M( b0 U- [- X" {! ?
72. 
    
73. char *dmabufsrc1 = NULL;
    9 {0 g3 _: N  j* {* ?  W% h
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    . a% |% o: i: l! k/ T1 d) l: K
77. 
    
78. static int acnt = 512;
    ! p  S! q! L8 t& a+ z0 \% y
79. static int bcnt = 8;
    " F  u7 B' O- m# A3 A0 k
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ( `- M5 {' I- S& k% S0 n1 {
83. module_param(bcnt, int, S_IRUGO);
    : l; J: I4 t/ [$ W
84. module_param(ccnt, int, S_IRUGO);

复制代码

$ x. U8 ~" g( X
      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
  w+ _- k  L6 K4 Tarm-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。