OMAPL138如何在Linux下使用EDMA3驱动

yyj

! O: u* Z/ Q# g8 `

1. [code]EDMA sample test application
   
2. /*
   0 f0 ]0 X  R# S) C) @% ?
3. * edma_test.c
   6 P5 `$ z9 \  r6 E
4. *
   
5. * brief  EDMA3 Test Application
   4 i0 B1 D, y; G0 N8 d1 j6 {
6. *
   ; h% x& u9 ]: W
7. *   This file contains EDMA3 Test code.
   % e$ X) L2 ?3 K+ r5 p6 `' a
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   3 \+ l- M) M. k5 K1 K3 U
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    + _# b1 B8 I, h' k$ e$ J7 W, u
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    * U& C' E! M4 i
14. *
    ' M4 Y7 a2 R& Y* H6 A! `3 c4 q
15. * This program is free software; you can redistribute it and/or
      ~) }: J! R" l  `2 k0 [
16. * modify it under the terms of the GNU General Public License as
    # Z$ c, X, {4 n0 t- m  G
17. * published by the Free Software Foundation version 2.
    8 \% \& K/ S5 O% i9 w
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    3 ]* ~' j. [# Y
22. * GNU General Public License for more details.
      s$ m- L- y' \& H" Q
23. */
    
24. 
    
25. #include <linux/module.h>
    7 h, @2 m) O. D9 s5 x+ K0 S" b
26. #include <linux/init.h>
    " u. Z8 @: g# h5 M9 Z+ a
27. #include <linux/errno.h>
    9 T" p( [! o7 @
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    # L: a; ]# L1 G/ Z9 H
30. #include <asm/io.h>
    4 P2 o8 v9 C4 g% d. E5 H: s
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    , c7 c3 v! m# M! P$ z0 Y
33. #include <linux/mm.h>
    9 P& ]# n. ^# y+ l3 A) T
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    & A4 Z' k$ k/ N, M5 X1 @
37. #include <mach/hardware.h>
    3 k; J$ u; ?5 ^5 \- q& {+ Z  x, I4 |
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    # O, v  N5 ?  L# `5 m
40. 
    5 P6 V3 E9 w$ V& ?
41. #undef EDMA3_DEBUG
    - v' Y5 q" [: d: J
42. /*#define EDMA3_DEBUG*/
    : Z1 m' ]. ?& @" M
43. 
    
44. #ifdef EDMA3_DEBUG
    % Y5 I6 E- z) h3 b* Q4 f
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ' x3 q3 U! @( a
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    9 t  q6 z/ x4 \9 B
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    1 M  W+ `$ s6 S
48. #else
    - w) E9 c# y; E" F9 y0 F  m
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    2 r8 M5 E' R. T" C6 R' \9 }' O
51. #define DMA_FN_OUT
    8 @2 \! Q( V' c
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    # v; t% C. n9 k8 P
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    , i+ {3 ^) Z5 W  `% v( F5 T8 v4 @
57. #define ITCINTEN_SHIFT              21
    1 F8 M; A5 S' ~3 I+ g8 z" p& Q
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    * |' b8 e, x0 O9 A& L0 t: j
61. static volatile int irqraised1 = 0;
    , B0 [, u1 |1 S; U
62. static volatile int irqraised2 = 0;
    " s9 h# z7 k% i1 h
63. 
    9 I8 F# u( l  {0 v  u
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 k4 s9 O) q* |- }+ X3 w2 k( f* }
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    9 B7 H  F  X! b! y
68. dma_addr_t dmaphyssrc1 = 0;
    * h4 @  p- z8 r/ b  n' w9 F& V
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    0 n* Y1 R1 E' b3 O6 m+ Z  h0 {
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ' A9 n4 l# d% P5 D8 ]# f3 t0 |: @
75. char *dmabufdest1 = NULL;
    : K+ b. s5 Z' B# s9 M2 d) i, ]
76. char *dmabufdest2 = NULL;
    2 y# J) D# U. [. z9 l
77. 
    
78. static int acnt = 512;
    % l# y4 I/ p5 r
79. static int bcnt = 8;
    - G0 i3 Y1 M/ C) H, Z* P
80. static int ccnt = 8;
    4 J( d/ @$ O8 C$ u: Y
81. 
    ( j5 ]% m+ v: J
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    / b9 T& O9 g( H: F% y
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
0 @7 C. a* M) aarm-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。

# H7 O+ R( ~* y" q
* y' W' i  l* V9 c; |* g; q9 q