OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   - P7 T% T+ y2 n8 C
5. * brief  EDMA3 Test Application
   0 z- [& R# }7 g5 c
6. *
   1 r% A7 z, I" s
7. *   This file contains EDMA3 Test code.
   
8. *
   0 G7 E; Z7 g1 \1 C5 i, W
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
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ; Y; u( |4 ]$ ?2 ^. x' n
14. *
    5 ~% k+ A% R7 B" f+ g# F5 w
15. * This program is free software; you can redistribute it and/or
    + x5 c# n6 \" c
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    - U  q8 G* A0 n7 E4 ^1 n: r
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    & f. d: a/ o$ P. c6 D
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>
    
26. #include <linux/init.h>
    ( Z$ _0 J6 `* j8 g
27. #include <linux/errno.h>
    5 G/ K- c' O1 e9 a! U$ |% Y6 y% ~
28. #include <linux/types.h>
    3 Q4 o1 t8 [) T4 R& P/ J' \
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    5 o: f" z: @* N5 v0 I
33. #include <linux/mm.h>
    3 X, G) q) k. R+ N
34. #include <linux/dma-mapping.h>
    4 M  f- T& }1 U3 f! r$ m
35. 
    : @4 W, l/ V; a
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    # i/ o% ]  ~' D9 h: S4 y" u3 p
38. #include <mach/irqs.h>
      K7 q5 b- U6 o
39. #include <asm/hardware/edma.h>
    
40. 
    ' s2 y1 s5 n- t1 I2 N
41. #undef EDMA3_DEBUG
    - n9 m( R5 j: c) b3 ?, l/ C0 b
42. /*#define EDMA3_DEBUG*/
    7 {8 T: H' a6 a7 ~
43. 
    ' O& U- P9 l, J. ]& f
44. #ifdef EDMA3_DEBUG
    & B, f2 D, n' E* X7 b5 `; `
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 B. q& }' L. j# h& v1 l$ X+ n
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    9 m( n' L! f7 w
51. #define DMA_FN_OUT
    ! K4 M! z1 o2 A+ F/ q
52. #endif
    
53. 
    5 @) e5 S0 I! e6 i9 B8 @9 L
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    $ T" K& h. u( r+ o! h
56. #define TCINTEN_SHIFT               20
    ! T3 H$ E; }. x5 {$ V, R
57. #define ITCINTEN_SHIFT              21
    8 y/ ~5 R6 u( [/ F
58. #define TCCHEN_SHIFT                22
    
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);
    ; n9 G& x% [% D3 H7 N0 ]
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. 
    , t7 c- l1 Z' n3 i+ S9 f  }& H- x( [
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    ; @5 {6 o3 A& ^
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    ' t* j( F; d6 i4 M2 ?0 F0 L. s
74. char *dmabufsrc2 = NULL;
    ! t3 }$ {) n* q) N; \
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    6 b4 W# o, r$ M# f) i  c
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    9 }4 b& `) R! e8 J5 o4 C
81. 
    % Z4 {& h% W, f; o2 P, R* K
82. module_param(acnt, int, S_IRUGO);
    ( e: f! t# ~& |" b' ?
83. module_param(bcnt, int, S_IRUGO);
    & p8 d2 m, a6 W$ w/ C2 P
84. module_param(ccnt, int, S_IRUGO);

复制代码

" y1 \% `1 O3 W  u# W      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。
$ v) m6 o- o+ v$ F/ B5 y3 \  l     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

8 ^. C) l  P" @