OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   2 o8 k9 u9 r" q0 X1 \" O$ q% R
2. /*
   9 ^0 @4 t; v0 Q1 _
3. * edma_test.c
   
4. *
   2 T" T! {9 s) ?
5. * brief  EDMA3 Test Application
   
6. *
   + e5 |( j( r8 N1 c
7. *   This file contains EDMA3 Test code.
   
8. *
   8 {5 y8 \; S* n! ~. X, W( ?' X
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   & \$ \' {8 G" @4 M) I3 N
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    . ~5 y3 s  N9 b/ g
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    8 `$ i- N5 B" Z+ J3 }, J
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
    / S+ t8 o& J; u4 c
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    + {, f# g) ]) I: |
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    & u/ b: N) s* a, b6 C. R) }
22. * GNU General Public License for more details.
    
23. */
    3 O) m6 U9 i' B( a# A8 o0 Q2 b
24. 
    
25. #include <linux/module.h>
    . W, ]% [& Y2 U% F# ~9 U. n- k
26. #include <linux/init.h>
    : Y, K  o/ i- H" g4 F9 p# ^
27. #include <linux/errno.h>
    ) R4 ?; g5 ~) g  g+ B3 @% N
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    . m, k3 F$ O- k" A- T4 C" ^) M
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
      D8 w) n7 d7 U7 r0 R# H
35. 
    0 c" l5 i: D3 J8 [  S9 l5 m2 x, [
36. #include <mach/memory.h>
    9 d, t4 z7 g, c9 U+ X
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    # e* f( {, }+ v; c
41. #undef EDMA3_DEBUG
    * l) J* W4 A- j2 S: m% _5 _
42. /*#define EDMA3_DEBUG*/
    
43. 
    8 y: z: W7 }6 b" q" x2 b
44. #ifdef EDMA3_DEBUG
    3 v" G  O8 ]3 w7 B% _- h3 O$ ?
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
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    & K* I- b( k. ^* j; d
52. #endif
    7 A: M0 p9 v+ t( V3 l% ]( ]
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
      o/ Z8 [4 o" F7 A1 \
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    8 P, K( X& Q3 c/ {& @
58. #define TCCHEN_SHIFT                22
    ( I: ^% Z+ d' w* p4 w, p* I& g, \/ H
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    & y* I# K4 b/ z/ k7 v( d( w! Z. d
62. static volatile int irqraised2 = 0;
    0 z* h  a) x2 d6 g* V' B
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ( s8 W! {! I1 y, Y5 R
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ) i1 R, ^& ?2 I8 A# R# D6 K
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' }1 C0 A6 S! ~: H, f/ \
67. 
    3 o  J, p# ]8 t, Z) W& w* i) C
68. dma_addr_t dmaphyssrc1 = 0;
    6 @5 A) [, S- L; h7 `  Q1 Q
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    1 p( T3 n  V! a, \& T4 C
75. char *dmabufdest1 = NULL;
    9 X' _8 z' L, d( b! W$ Y
76. char *dmabufdest2 = NULL;
    8 {- E% c2 ~6 Y3 F
77. 
    5 `$ {9 B9 C4 u
78. static int acnt = 512;
    " z' w" k7 ^6 l/ e
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    8 u; n2 o/ e: D8 X- }5 E  C2 {
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    5 y) k1 u. j3 e- W0 Y2 M
84. module_param(ccnt, int, S_IRUGO);

复制代码

( k4 K6 C( x% l7 A3 v, p
: Z+ w, F* ^& I- F      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。


/ M+ @) N& c& t" h