OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   8 K1 u: F- G. N4 c, D$ Y
2. /*
   4 g: u  u. _. ~
3. * edma_test.c
   1 e) {4 r9 W/ P7 |& B8 S$ e4 L
4. *
   + h+ {0 Z' ^0 E6 m0 X1 l1 l
5. * brief  EDMA3 Test Application
   0 f- R3 X# h+ a4 f
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   2 A* p$ {: _8 H
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
    4 _0 P4 N' e8 Q5 G: I0 o, q4 ?  q
11. *         TO CHANGE.
    - [2 Y/ D9 }# q% P4 Z: p+ |
12. *
    7 w1 E; D3 U) b5 i) I. R4 M) ]
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    - b2 ^7 O( f( [, a7 P
14. *
    
15. * This program is free software; you can redistribute it and/or
    ; G7 e& j" E6 G+ j% @  w( b
16. * modify it under the terms of the GNU General Public License as
    
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
    , u6 p5 B' a9 B$ p4 y, _
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ! p, m- t7 F1 r9 k9 |9 f+ t$ t  a
22. * GNU General Public License for more details.
    4 S9 w4 S; _  H- y$ c$ c( Q
23. */
    
24. 
    1 Q+ b5 f* A9 o! s- A2 |6 n( r' m
25. #include <linux/module.h>
    & |: k% X# N  C" S& B2 q0 t( T
26. #include <linux/init.h>
    ' D2 S  R; f' ^! Y  ~
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    % W  \9 I: ]7 [
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    " p1 ^. X+ z/ P; Z1 i2 o
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    $ @" w( f/ d, _* m+ n/ ~( U
39. #include <asm/hardware/edma.h>
    . ^) v& K9 q& d* Y$ L7 M: P# p# w7 d
40. 
    
41. #undef EDMA3_DEBUG
    + x  C" p7 Y$ A" j( [
42. /*#define EDMA3_DEBUG*/
    ( R' Q) p* S  h  A; ~, j
43. 
    7 i9 F1 A8 ]& g4 v( j$ U
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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    3 V. e. W5 W/ {5 P# [3 D
48. #else
    " N  J4 U9 i% ]4 r5 M( K
49. #define DMA_PRINTK( x... )
    + Y& d" l. F+ ^% P! C. V$ q
50. #define DMA_FN_IN
    & G+ M/ E0 G5 n' z
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    - H% L0 z# n8 g6 l9 E3 t
62. static volatile int irqraised2 = 0;
    6 u0 P3 @0 e: o' K8 ~2 N
63. 
    # W" K4 m$ F4 c/ ]& l, K
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    1 ?% o. e+ [8 b4 s: i* [- R
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    " h- [9 f* {* x
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    9 G" ^( B  ~" }: e0 N  `
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    ; H: z! p% ]# x* G6 G
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    2 ?: M- F6 E. c; z. @
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    5 Y5 K/ z: p& l3 X
74. char *dmabufsrc2 = NULL;
    4 q  E7 {& z8 k- A, ^9 o4 g
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    * w' r% s- ~- g9 M
77. 
    
78. static int acnt = 512;
      }# {$ ^  X* X1 i0 [6 z  C
79. static int bcnt = 8;
    9 m$ w- T5 h' B# k! }
80. static int ccnt = 8;
    5 _! T+ c* M9 c* S) C' R" x
81. 
    ' M1 p3 s$ z9 ]# x% o
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

0 t: q- s& o+ U" T$ Y" B7 T, N* h
4 ]0 z. n0 V, P' w9 j5 i3 c' K      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。
, D7 A$ v; Q' x4 S  m$ j0 o- a