OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   * C1 }# D# r$ _& ^
2. /*
   2 ?( s6 `! e- P3 v. T
3. * edma_test.c
   
4. *
   1 y  T7 T% Z, h' o3 M$ p
5. * brief  EDMA3 Test Application
   % I, x: L( G& U
6. *
   2 J& @9 E  v; A6 i" F- O5 _" E+ v9 l
7. *   This file contains EDMA3 Test code.
   5 ?' d2 a/ b# n' `7 O
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.
    6 e1 q' d" G4 v9 F  f3 ^8 q
12. *
    2 o6 ]) e6 r: e% @
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    ' H  a. I. i4 c
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    6 Q8 Y, \) Q7 j  _. V+ c8 [5 ?2 M
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    4 v3 g$ n. c( g! G! D
20. * kind, whether express or implied; without even the implied warranty
    4 ?1 ]& M# k9 O5 T! y% S  \
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    * X9 \  x$ Y/ o$ F  ^. d. |
22. * GNU General Public License for more details.
    
23. */
    0 G. O0 a# P" ?* ~8 ]
24. 
    
25. #include <linux/module.h>
    3 f2 [, I0 k0 l$ x; M3 C* Q
26. #include <linux/init.h>
    & {4 B, Q# X6 v1 ~1 q* f+ Y  S% T( D, N
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    , `; X! i* N- u( q5 _; `) X
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ; ~+ K& m+ O; k7 X+ L2 w4 V- G
33. #include <linux/mm.h>
    # Z8 u6 e3 ?0 t1 ^, C9 \, q
34. #include <linux/dma-mapping.h>
    & k  |) w$ n7 ~7 o
35. 
    ! B" m4 b# O" M7 F7 z0 t
36. #include <mach/memory.h>
    & M) L3 V1 p# D) h' _/ h( [' o
37. #include <mach/hardware.h>
    $ |, ^1 P* \; e1 Y0 M. Q% ^
38. #include <mach/irqs.h>
    . ?0 d* ?4 S& |$ e* [9 l/ `
39. #include <asm/hardware/edma.h>
    
40. 
    % W  A' N# ~' J2 t* N
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    $ W9 [3 u3 Q1 s" H9 s& J5 ~6 S. i
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    5 M6 `4 y/ z* j/ f/ P" K
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    0 F/ b$ w- t0 x+ e1 B6 S
48. #else
    1 d& U/ |3 h( U2 T! s
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    . G4 _' X7 q8 r( J8 N& k1 n
52. #endif
    0 q- M! U& z) w
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ' g1 r  _4 u  `2 |0 r' r2 e0 ~: Q
55. #define STATIC_SHIFT                3
    ; W8 z- u! m( x, u$ B4 F
56. #define TCINTEN_SHIFT               20
    , F5 ^1 s* p& u, j5 v
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    " F/ G% w# t1 `3 T( @
59. #define ITCCHEN_SHIFT               23
    ! l7 O+ N% J' s4 F5 I# l5 m% H
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    
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);
    ( \4 q1 J* n+ M
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    4 v- ]& x1 y# D
67. 
    7 J5 c* n9 G$ g2 {: y* F
68. dma_addr_t dmaphyssrc1 = 0;
    6 K6 L3 y) i0 t. Y% [
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;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    , Q% q6 E# T' Q
77. 
      x7 z2 _& p! P+ R% `( v: o% r
78. static int acnt = 512;
    1 j6 X4 O0 [# |- s' W* I" E
79. static int bcnt = 8;
    , e# l5 E' J# z3 l+ L) N& ?4 v. A; o
80. static int ccnt = 8;
    
81. 
    0 k* P0 s2 {; T# P1 Q3 \
82. module_param(acnt, int, S_IRUGO);
    ! _. r) P& \8 ?9 `
83. module_param(bcnt, int, S_IRUGO);
    7 t* Y3 L  s( s: j8 o- ]5 j. X
84. module_param(ccnt, int, S_IRUGO);

复制代码

/ w% F, g3 d# G$ u# `  A
9 K0 w0 S  p$ s  ~: H      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
3 b9 _  M( L" |; Marm-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。

6 Q  n' b9 z" ~5 f* f0 o