OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ; R3 B8 a6 l& j
2. /*
   
3. * edma_test.c
   
4. *
   % |- A6 y3 r# k: o0 c
5. * brief  EDMA3 Test Application
   
6. *
   1 W7 i! c4 ^5 N/ m6 Q
7. *   This file contains EDMA3 Test code.
   $ K: n$ m+ n+ F: I
8. *
   1 d8 @4 E* R! u; b7 H$ S/ ]7 T
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   $ m" M/ N* X6 c1 Z; ^* ?5 ^
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    6 o; {6 l. Q2 T8 b) }! q
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    : j% C0 l( _" n$ H; n& P# C0 o$ I) _
15. * This program is free software; you can redistribute it and/or
    3 {5 D2 ?' E1 w$ p
16. * modify it under the terms of the GNU General Public License as
    ) M6 I" Z! @9 a  ]! h! e0 \+ G( `
17. * published by the Free Software Foundation version 2.
    
18. *
    # Z& R# i/ y0 Y/ W7 P2 c
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    1 @: M# L! b3 w% }+ ]
20. * kind, whether express or implied; without even the implied warranty
    " Y! _% Q% p. c6 g
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    2 O4 ^9 Y, [$ h& r( O% o. Z
23. */
    ( b+ ?6 i; Z. X) I1 N, W
24. 
    
25. #include <linux/module.h>
      w, W! f. T# s
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>
    7 e+ h# p3 ^. O" {7 F
31. #include <linux/moduleparam.h>
    , ~* E  k5 }5 p8 J; C
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    & i; g- O; j0 v& h  m+ N( ?! X! x, J
35. 
    
36. #include <mach/memory.h>
    , Y3 J  ?2 m4 u% T/ \
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    . Y8 O3 J4 e2 L' u  k. D, _6 Q
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    2 T0 D. c# f# f
42. /*#define EDMA3_DEBUG*/
    . A& ^; Q/ k9 I0 X# z
43. 
    3 t2 E; C  T4 Q8 i
44. #ifdef EDMA3_DEBUG
    1 ?  ?1 K7 v* u) ^6 e. j
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ) ^/ e* ]) y- ^3 V' p
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    7 l3 u7 n8 k) h0 y! }
48. #else
    
49. #define DMA_PRINTK( x... )
    3 Q0 T( k4 n% y5 n" n1 _
50. #define DMA_FN_IN
    4 s7 y7 d3 J  @; x, ]3 J1 b/ ?( ~
51. #define DMA_FN_OUT
    ' N% |* f$ H5 F% K
52. #endif
    
53. 
    
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
    
59. #define ITCCHEN_SHIFT               23
    ! w) K+ u1 G6 s. g/ k
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);
    
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;
    4 E8 l, }3 J& x6 O) x* z  w2 g
70. dma_addr_t dmaphysdest1 = 0;
    ) F6 Z6 u8 b2 Y* b4 i- o
71. dma_addr_t dmaphysdest2 = 0;
    0 ?& c9 l' n- k; [; W) F/ U/ `
72. 
    / q- _+ h: t4 ]: g2 n+ `) {! j& {
73. char *dmabufsrc1 = NULL;
    8 G- U0 C* g$ K5 n) J. [% C5 Y
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    $ {! w! ?$ ]9 A
78. static int acnt = 512;
    2 }, Y9 G3 |6 t, C
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    1 s" N8 p! u: f: R
81. 
    
82. module_param(acnt, int, S_IRUGO);
    $ w4 g" x; x" p  e' L& Y3 }; r/ z* n5 U
83. module_param(bcnt, int, S_IRUGO);
    ! q9 }6 r, o' D+ ]" Q& a& |
84. module_param(ccnt, int, S_IRUGO);

复制代码

, h' M% R) v, `8 W* {% a      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。


) V9 d# l2 W) {9 ^