OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   4 |  n2 U0 Q+ V7 F  a; C
2. /*
   1 z+ ^8 _7 I- Y/ A
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   " Z+ M' X- i7 t' W( i- M* b1 @- `
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    # N' X& x0 g- e1 p5 R$ M
11. *         TO CHANGE.
    + s" a  b, D5 k; A" A6 ^$ n
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 f( m" `& ?/ T
14. *
    - `% c% V8 c: I5 r
15. * This program is free software; you can redistribute it and/or
    6 h  v; E( a, {+ D/ j, E
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
      Y! c7 `& Z% D
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ; V( I) k0 v& {+ R
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    8 a: K: G2 |- u' x8 D. ^1 I, [  Z9 l
24. 
    9 o5 g- G/ t3 p- v/ P. y4 W) E! ~) d
25. #include <linux/module.h>
    0 T8 w$ T5 \+ Q. z, T
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    + V  C" C2 H. R: G* A, A* ]; K
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    5 H: I5 f/ L( M9 }# B8 `
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
      h" N; \- x; d4 ~: R/ W- \
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    ; U5 c# P5 J- z/ ~6 [! Q
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    6 M$ v* n' A" l2 I: r% W/ R
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    . K/ Y. }1 e+ L- r/ N
40. 
    6 t; a7 f  }* Q/ f) Q+ n9 \5 t- I
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    # I/ Y  y7 T  r7 U! |$ C( w$ j9 V
43. 
    
44. #ifdef EDMA3_DEBUG
    7 X8 G8 Q8 ~, V4 p' t# k
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__)
    + [6 u1 X# U; g& L, R' V1 `
48. #else
    " Y; A7 P1 F3 h) U/ G! L
49. #define DMA_PRINTK( x... )
    & r1 N% d' O( K; _7 ?
50. #define DMA_FN_IN
    5 I2 [3 x3 H" ^3 S5 s% Z! k
51. #define DMA_FN_OUT
    
52. #endif
    7 s5 p2 h& C! n/ [0 p, l' q0 H
53. 
    5 F, l" a1 d1 P" K" _4 G3 |( x
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
    4 }4 A7 b! d* F8 G
59. #define ITCCHEN_SHIFT               23
    
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);
    8 n; ]" n3 S, s3 D  H# z
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ( I' _. S$ n# y1 e, s% d, H) w
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    / t: {# G; q# z* b
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ! F, W/ A7 J& d( N9 w
72. 
    + e  s0 M& p4 U. x
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    2 n- {* n, v+ r3 a6 j* o/ j7 s% I
76. char *dmabufdest2 = NULL;
    
77. 
    ' F8 t* T6 i4 Y. t* U3 R/ d/ a" v
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ( G0 A; }% s3 i
80. static int ccnt = 8;
    
81. 
    4 l/ B! r6 |" t4 D7 w9 s0 @
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
0 W  V9 q4 e7 L4 g4 f7 s- y  Yarm-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。
9 b/ a4 L+ D2 t3 t% a, Z0 r  d2 `$ ?