OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   ) p+ b5 K) O! S/ c; I: R
6. *
   % ^2 v/ C; c9 X( y0 Z) M: y8 V
7. *   This file contains EDMA3 Test code.
   
8. *
   9 X" w; N& S( p8 N. h% R
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   / c' \3 n  Q- T4 Y+ Z) r
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    + a& h7 u3 K: J. O
14. *
    
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    : \) }: T0 K; ~' t) }  A
17. * published by the Free Software Foundation version 2.
    
18. *
    1 z; H) p" ~! T
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ! \& a; ~  C; D7 j. S1 A% ~
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    / q; |6 A5 W# c, X
22. * GNU General Public License for more details.
    7 A* Q2 o* r6 H( a+ g' C$ w
23. */
    5 C: R% c4 I5 l- ^
24. 
    0 C& m% N9 ?1 y, y) @, f
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    & O8 m; z  m* y7 B: @# G$ L
27. #include <linux/errno.h>
    ) v' q. J5 x+ R  Z' q+ U
28. #include <linux/types.h>
    6 q6 H3 T8 I' k0 x7 |" A& |' [$ E; T$ K
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    7 |5 k1 N' ?( E$ J6 W6 E! r
31. #include <linux/moduleparam.h>
    ) m$ s# s* I0 U: C0 R  y+ l
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    + l! g) w) K* y
34. #include <linux/dma-mapping.h>
    ! \" w$ s1 m3 E% m
35. 
    
36. #include <mach/memory.h>
    5 _, E6 a8 `8 b; Y, D. z' M
37. #include <mach/hardware.h>
    ! i. @3 R0 [) u1 |2 h
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    * O$ x9 h" b9 K3 K2 R
41. #undef EDMA3_DEBUG
    5 }. D/ Y/ x) a$ v$ H- v' m* I
42. /*#define EDMA3_DEBUG*/
    4 q+ v4 _8 Z! K+ x3 d: \% H
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    & ^* x  k2 o6 e2 n! \) L6 \& s6 J
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    4 c+ ^0 S4 r8 Q: p3 z" ^0 l
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    * ^" Z' {/ I  r9 o; k7 f
48. #else
    % ?$ G* t' ?) S  ~  F: b/ J1 w
49. #define DMA_PRINTK( x... )
    % a% B' s7 w+ ^+ ]/ @
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    7 k0 ~* a/ i& @9 J: m  y* u
52. #endif
    9 F3 L9 |% X3 N' i, o' i* I6 ]4 Q
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    : d0 L" R$ x9 O( E% l
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    * D& q6 x# i. u; ~$ M
60. 
    2 s* L% {( d3 _- C% F% N' D7 D
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    : b- |( |5 O; r" v* q
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & Y3 i0 D; P% L
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
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;
    
69. dma_addr_t dmaphyssrc2 = 0;
    * @) e" Q# f$ R
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    - g9 L4 `. W" U: c* L9 H$ |
72. 
    
73. char *dmabufsrc1 = NULL;
    $ I+ x) e3 ]% _, d0 {
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    , i4 K  v7 p: `& f. X5 \! S! n8 n
77. 
    - Z4 A, ?$ ~1 ^9 ^- L
78. static int acnt = 512;
    ) C; |( I+ v: g% {* S4 ?% S4 f1 j
79. static int bcnt = 8;
    1 Z5 T, j4 c, V6 k' N6 B3 c: z
80. static int ccnt = 8;
    5 H7 B6 P* }+ |, Z
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    2 ]  F" b1 K) T0 Y
84. module_param(ccnt, int, S_IRUGO);

复制代码

$ ^- @! C+ D$ Q2 Y      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。
# S) R* P+ \: m1 d+ m2 u
1 ?7 n2 E, H* ~& D+ d; V6 D
& {7 @6 B+ W- ^