OMAPL138如何在Linux下使用EDMA3驱动

yyj

. R! c0 `' P1 `* A' k0 ~5 M! W

1. [code]EDMA sample test application
   6 j* _3 w: G1 J2 o, L: b! e
2. /*
   ' N) o; B. M2 S# v! H6 }3 K; j
3. * edma_test.c
   ) t, ~" s) V% j( O2 X
4. *
   
5. * brief  EDMA3 Test Application
   0 ^# P3 B) E/ n
6. *
   , g6 e2 T3 w- j4 B  A
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   5 l" n% k& t; d  Z% n5 a9 r( G5 \+ k
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    - K+ K$ w+ h& {* M
12. *
    ; }3 q/ r- K- J0 k* [
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    $ f. m* z' K+ T$ c( [/ Y# S) z
14. *
    
15. * This program is free software; you can redistribute it and/or
    0 X% @( P1 [* ^9 V. \& j9 F
16. * modify it under the terms of the GNU General Public License as
    0 U) F5 e% W, N: ~( e- |
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    / @7 s) |8 O6 f8 v! e1 b& x0 F3 I
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    : A( t: t7 \0 \% ?: f' E
22. * GNU General Public License for more details.
    ) {" P6 K  r  O- K
23. */
    8 y5 N9 o; U9 x5 k# V
24. 
    3 n  B7 S0 j  x
25. #include <linux/module.h>
    + R& G  v+ k& e: y& C; t- I  m6 ]
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    2 Y, @- _1 z8 z
28. #include <linux/types.h>
    ( ]8 A8 h( f' C1 x; h( e
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    # `8 ]' D' f" F8 o
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    , Y' K. `6 Y" M$ L5 d1 X& X
34. #include <linux/dma-mapping.h>
    3 |3 U  M! k; k# H( x, o  V
35. 
    / [; u- q; ~) |! \# B2 F6 C
36. #include <mach/memory.h>
    ) ?* d: w; ~) c. b" H, {
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    6 ^- W. U8 z2 J! ~
39. #include <asm/hardware/edma.h>
    
40. 
    " ?% C+ h. [: m& q$ L! q
41. #undef EDMA3_DEBUG
    5 s( ]4 a5 m4 Y& H5 w1 S
42. /*#define EDMA3_DEBUG*/
    1 `) Z$ t3 u. y& Q
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__)
    $ C6 R- ]$ e* }/ s7 R
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    6 ?. r* ]- k  ~1 k. }' k9 W
49. #define DMA_PRINTK( x... )
    * i8 @1 {3 R' G3 J* ^. [1 ]/ l4 F
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    $ O7 J) W2 l8 e6 B
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    7 w& p% i7 G: ~, k6 F9 E
55. #define STATIC_SHIFT                3
    2 s' F) Y3 h& y' D6 f5 C$ t
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    # X- P0 N! }$ g, l6 ^' {
59. #define ITCCHEN_SHIFT               23
    1 `: L, p% F) ^) A2 P% I+ I
60. 
    # `' l8 o/ q3 o3 X+ [4 p
61. static volatile int irqraised1 = 0;
    4 ^* I, T7 ]3 {+ Y
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    5 I( [5 p& ^0 N
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    # G3 x& r9 `$ ]7 W9 I: {
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    + l: K( r) z" c
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    5 P- S" T( d. B# K8 R# u% |
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    - W" c( Q" }5 c- [; R; ]5 Y
72. 
    1 C% y' k! S  ~  p) P
73. char *dmabufsrc1 = NULL;
    9 P* D% o( {% I, [7 b! F
74. char *dmabufsrc2 = NULL;
    # a- R. B4 u6 d& e
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    4 [$ x5 N, n  p- Q
78. static int acnt = 512;
    % i8 v7 _% M  T: O
79. static int bcnt = 8;
    5 J: {, L2 g2 T2 ?; i4 |8 H% l
80. static int ccnt = 8;
    * P( J0 S- M# e+ R
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    8 r6 y  s  N6 g$ v0 n
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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
, J% J% }2 @( Zarm-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。

9 v9 h/ I/ I3 Q4 Q! D# K- P! {