OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   7 Y* m' W6 s( Y! N. @
4. *
   / Z" q5 e* e6 N; S( k& Z
5. * brief  EDMA3 Test Application
   8 G1 W& `: [) n  `* l( t, Z
6. *
   ; c5 u( [, t; `% h0 J
7. *   This file contains EDMA3 Test code.
   
8. *
   5 `0 G1 q/ N  u: R
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   $ h8 E# P5 D, g4 S
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    + Y8 Z6 a) x  m9 E5 l7 U
11. *         TO CHANGE.
    
12. *
    . n2 }, c- W4 S
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ' `2 w5 F' {: [' B) X
14. *
    
15. * This program is free software; you can redistribute it and/or
    - }8 h' ?# t/ x( {' j
16. * modify it under the terms of the GNU General Public License as
    ) I% D# {: l7 e3 Y8 Q9 w
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ; k# y4 N! e* U5 S  S( k
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    $ t7 a4 z* e2 @2 ~* m: B
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    % q% ]+ |$ u1 x- N: W0 ~$ P/ m  h
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    $ I: j# z& a" L/ }. @
29. #include <linux/interrupt.h>
    & t/ _4 @: [, {
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    ( \: s  b8 s- Q9 [
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    1 L, H$ f* q, x, Y9 X8 ?- o
34. #include <linux/dma-mapping.h>
    
35. 
    4 P1 d0 i7 K5 {: O
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ; u+ \5 Z- m& T* x5 W2 O1 E
38. #include <mach/irqs.h>
    4 d& @3 c7 {/ o1 v8 D
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    0 y# d# q( ?+ j1 N2 v; k7 p
43. 
    / U7 V3 P: X8 L7 \/ L
44. #ifdef EDMA3_DEBUG
    : R( E9 W  @4 w! c3 A, Y9 o
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ; E4 n4 K( y9 c
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... )
    0 Z* w4 J% ?3 {+ [1 u6 M8 \* u
50. #define DMA_FN_IN
    ! A! Y4 z8 @- s* h& T7 c$ F
51. #define DMA_FN_OUT
    2 d6 V' D( R- n* `
52. #endif
    
53. 
    4 W. ]  n4 D% P$ [/ A
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    & n1 u- M' V. p4 Y; [
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    3 F2 c- d! |, G
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    3 F7 Q) A. X  [" N  I& f
62. static volatile int irqraised2 = 0;
    ; R- O3 }" r6 j4 y9 P/ ?
63. 
    - {% {! J1 n+ G, d/ W! H, O0 W. `
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    $ [7 l- O# l; d$ T/ L
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    # k1 Q' [, r( V2 f7 J% v% w5 I
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    - {# N& k4 k2 a( D
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    # j( C- W/ ~9 b8 p8 W; [& b
73. char *dmabufsrc1 = NULL;
    4 \& Z& `8 u. d7 n; a& a
74. char *dmabufsrc2 = NULL;
    ) A# |& m4 J$ P- ~) b
75. char *dmabufdest1 = NULL;
    ' h- [$ e$ g7 X/ c- R
76. char *dmabufdest2 = NULL;
    
77. 
    ) {7 u, d- W8 @2 z4 J' J
78. static int acnt = 512;
    9 S9 [$ N9 a: ]5 E) F2 s
79. static int bcnt = 8;
    " G, d5 f5 G% s
80. static int ccnt = 8;
    
81. 
    - I& D) {( J8 f* F' L8 \# i
82. module_param(acnt, int, S_IRUGO);
    / @/ k- f# C2 X" E, |3 A
83. module_param(bcnt, int, S_IRUGO);
    ; o6 e, h. Y: `4 p0 @8 {
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
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。

7 m$ N/ n4 W2 j
3 K5 V6 B. T& J6 G" A4 f4 L