OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   : J7 @. w% J9 V: G% W/ V5 V
2. /*
   8 k2 n  C- U3 Z. G2 ?
3. * edma_test.c
   
4. *
   7 j9 S) \& k% Z+ [! k8 H
5. * brief  EDMA3 Test Application
   8 a4 S+ K. T1 {2 Y0 a
6. *
   2 q. W$ C: K4 ~5 H8 o) {
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   2 A5 W5 ?% w4 u
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    ) X) q, E3 [6 t4 q. ?4 I4 _' t
12. *
    . N! K* a9 \6 l' O& \" w9 w# ?7 ]- S" ^
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    6 G& z) P2 o4 ?/ p0 v- a# _
14. *
    
15. * This program is free software; you can redistribute it and/or
    8 ?6 h& J* ]6 c! q6 n, z
16. * modify it under the terms of the GNU General Public License as
    ) j/ O& H+ d% Q% p/ i6 H
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    7 X- Z! Y$ S( \! H( v% `
20. * kind, whether express or implied; without even the implied warranty
    ! V' l' x' ~- E5 Y* b) ^
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    # _! J% v. {# ?  S" y
24. 
    0 r1 F. U# N; |
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
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>
    # U6 I; H; D# w6 P" x# n* B
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    3 n3 u( t$ t0 y: H" F; t
42. /*#define EDMA3_DEBUG*/
    * C# R6 J& U- P4 [8 e
43. 
    
44. #ifdef EDMA3_DEBUG
    9 g  m/ R! E& ?
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    - V) k! o/ j+ o
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    1 c9 x; v) O3 \1 S: z# u
48. #else
    
49. #define DMA_PRINTK( x... )
    ; w, A, h  O0 ^$ t! _  t
50. #define DMA_FN_IN
    . q3 {& u( ]* Q0 r; K2 D
51. #define DMA_FN_OUT
    % n6 X+ F3 [1 Q
52. #endif
    1 C" K; U, w9 }
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    0 D% c! U! X4 l9 `2 V9 r, L+ U
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. 
    1 d5 _; S! R1 ^% I! s. T& J
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    + u  u5 t4 e0 s4 g4 z' r. P& b
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);
    
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;
    ) X, Q. v+ ^/ R2 n% N
70. dma_addr_t dmaphysdest1 = 0;
    + z5 V! V. k6 F  G
71. dma_addr_t dmaphysdest2 = 0;
    4 x- A' Q; r; e3 r$ j
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    4 z4 r, y4 Z: A% ^
76. char *dmabufdest2 = NULL;
    
77. 
    . U1 W1 H! I' R- s
78. static int acnt = 512;
    
79. static int bcnt = 8;
    7 R$ G& ~) Z5 B
80. static int ccnt = 8;
    $ C/ ]: \1 @9 ^) M/ x
81. 
    2 C0 }* G: H* P& O- M5 y" a
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    ! S, B8 e5 v" W* W
84. module_param(ccnt, int, S_IRUGO);

复制代码

; W0 ^9 J5 K; n4 U3 x! }& e, s8 o
  p9 R3 x$ K2 @$ ^6 o3 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
+ ]+ M3 z! ~' earm-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。
1 j7 j! S7 W2 t
9 W) d* ]) A- _2 y/ V