OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   + u0 {2 i! W5 K, [7 a0 D4 K. Z
5. * brief  EDMA3 Test Application
   : ?6 E+ B: p4 V, \9 U1 O
6. *
   
7. *   This file contains EDMA3 Test code.
   - F0 w! G! g/ g; J5 o
8. *
   
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.
    ; _/ @; I0 v2 @3 g$ k5 a
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    8 w% o: P  A- y8 A
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.
    
18. *
    $ L9 P8 `3 h* c- p9 b
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ) f" Q; {; [& H! {% L0 o
22. * GNU General Public License for more details.
    ' [- E  Q& [2 N. |* Z5 M4 i% x
23. */
    4 K" T" a( {! W- g1 Y: `
24. 
    
25. #include <linux/module.h>
    ; R: J; k. x) l* w: y9 `& R8 `/ @
26. #include <linux/init.h>
    " m7 X9 n  E7 _5 k
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ! O& c- C( K' k6 N
29. #include <linux/interrupt.h>
    , L  L/ B1 q! R1 Y
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    * r/ k% Q$ E* p6 f
35. 
    
36. #include <mach/memory.h>
    ' \' M& D1 J; o3 A
37. #include <mach/hardware.h>
    % {* f% W7 Y1 a# F
38. #include <mach/irqs.h>
    " [1 o' Z* V4 ^: ?' `( L
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    5 h  Z( v; d) z3 P
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ' B( w: @# r' z
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    + {" f. ~$ a# @! {, }
51. #define DMA_FN_OUT
    
52. #endif
    ) l2 a0 R4 r4 v9 y  Y+ Z' Z
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    ) J! I/ Z& f9 O; L- ]# Q/ W
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    3 Z& d5 a* S% X# n0 ]* C
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);
    , u; X+ P1 L% R* o/ [/ H. x$ W
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ! T3 Z$ e! J& I6 \
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    - i+ }) ~2 N. q
70. dma_addr_t dmaphysdest1 = 0;
    ( U% @$ ?7 \7 P0 P5 \
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    5 \/ Z4 O( H' ?4 m; Z  {
73. char *dmabufsrc1 = NULL;
      |; b5 c! m5 p! m$ z' ?
74. char *dmabufsrc2 = NULL;
    4 B) J* J( {; l% }
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    ) S2 o  v/ A6 [' }/ q
79. static int bcnt = 8;
    $ s0 m& q' k% U/ n
80. static int ccnt = 8;
    ; p( h5 D8 z8 h. ^( _; M* C
81. 
    0 Z' b( U4 t& l* ]* a8 V
82. module_param(acnt, int, S_IRUGO);
    5 O% r: ^9 g- e4 a& J
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

" u" ?& x( ^) }1 V% h; J; [
      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
' J9 _+ d8 A5 I* harm-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。