OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   % H3 w' ?5 ~6 Z
5. * brief  EDMA3 Test Application
   ; E8 S0 s/ i: A9 L& x
6. *
   8 }& G0 D  d0 B/ T
7. *   This file contains EDMA3 Test code.
   
8. *
   / O. W* J$ T  Y$ @' q0 y
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   5 m6 D) ]! T* C" t8 L
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    ! w1 L8 h1 g5 ]8 v
12. *
      T' [2 b, G) M& i
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    " E- I# a2 @+ [2 z" B
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
    
17. * published by the Free Software Foundation version 2.
    + n. T3 e& V$ O! D" p
18. *
    2 ^1 G4 s9 R! _  F
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    . T3 O7 U4 f1 w8 q9 ?& ~
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    + P* s" L! P7 {2 y8 l0 ^& Y9 k$ i4 p; O
26. #include <linux/init.h>
    & f+ {" e! o( ^/ B" o- {8 W9 K
27. #include <linux/errno.h>
    * T2 b5 `1 O  k, C8 F5 }
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    4 A+ J. S: b* |- t. N, P7 Y
31. #include <linux/moduleparam.h>
    3 A( D5 G7 _" h8 u8 Y" j# E6 _
32. #include <linux/sysctl.h>
    9 l! J  I# T- Z- w) A/ e$ N
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    9 o5 \0 A8 W! ~0 j, Y' b# {
35. 
    4 u. i( w* {2 y9 }
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    4 B/ n, X. @' H' n0 G( C# C
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    5 T4 q/ u4 c5 o7 ]+ O% Q: e
42. /*#define EDMA3_DEBUG*/
    
43. 
    4 }9 s- S8 k3 |. R' |
44. #ifdef EDMA3_DEBUG
    , r5 f$ T" s1 s* x% m% u1 ~* f
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ( I1 Q" g$ w4 Z/ s' ^
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ! a$ c4 F6 V2 O7 r  l5 y0 s0 f6 R0 Z; |
48. #else
    
49. #define DMA_PRINTK( x... )
    3 Y$ b* q7 b. X" `& z1 `
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    ; a" D. Y# Y4 X, D" E: Z  Q
53. 
    ! N) K0 v! d, N! l# V
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    $ k3 X9 i$ s3 c* E: i
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    4 w7 ?9 G. K! a3 c% Q5 |
60. 
    5 o5 S- s7 [, v8 }  O) ~6 E& p
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    1 [* |  z+ {; _4 t* P
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);
    . V7 D$ ]/ v/ y
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;
    ' ^8 h$ @3 m( V7 T7 Q# B4 N
69. dma_addr_t dmaphyssrc2 = 0;
    " d: J- L9 [( ^; `7 o/ L
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    6 D4 e2 d/ a. D4 ~+ ~" `( r4 q
73. char *dmabufsrc1 = NULL;
    ; T( q5 y* E0 H4 D, d* I
74. char *dmabufsrc2 = NULL;
    4 J: }6 G4 ^5 i/ J
75. char *dmabufdest1 = NULL;
    5 H! Y! l! X! u  Z  C
76. char *dmabufdest2 = NULL;
    
77. 
    / @/ z: g% Y* ]
78. static int acnt = 512;
    ! y" b- u  w- K# s9 f0 s% b0 d
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
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

      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。
( N% ]* a& C6 [
' b1 K0 _& t! B; X