OMAPL138如何在Linux下使用EDMA3驱动

yyj

6 _8 }2 @. y0 |- t& j- N. x

1. [code]EDMA sample test application
   & ?$ S7 I1 r+ J) y
2. /*
   9 C& h, D+ i9 A' t9 F; {
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   8 f. J7 y9 M- v' _( p; _8 s& v* D
6. *
   2 {; q/ r6 V+ r+ R7 ]  S/ }
7. *   This file contains EDMA3 Test code.
   8 j' B" ^' \! E9 E& ^) c
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
    ) r2 ?/ u: f* l- n4 Z
11. *         TO CHANGE.
    ; i. b4 R. b8 f9 R  m. w
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    " f+ }+ v% \& L
16. * modify it under the terms of the GNU General Public License as
    " m0 [7 v1 s. W
17. * published by the Free Software Foundation version 2.
    4 q- M! C0 Z" k& B" W* i+ y
18. *
    5 i* q) R, ]1 Q0 l2 q
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    7 _' z* `& U% Y- Y/ `
20. * kind, whether express or implied; without even the implied warranty
    ) o. e2 R1 {+ \, T! ~( |1 a
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    $ |, Y/ c& A+ Z1 G; ^6 K4 }  I
22. * GNU General Public License for more details.
    
23. */
    
24. 
    9 ]- X: L6 i( m1 `7 Q
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    . d8 d' F. q! X- S" W4 v
27. #include <linux/errno.h>
    5 A& m, b5 R* ^1 Q
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    9 z6 K  Z" n* ~) {' W; s7 l( i
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    " g* j1 H0 O1 A, a0 s
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ; D8 I6 S2 R: u) v" D$ e6 v& K
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    9 Q/ C$ V0 e0 T1 H6 B4 ?2 i
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    ! J4 b9 ]3 ]3 q; ]' J
43. 
    
44. #ifdef EDMA3_DEBUG
    , ?; Q- D8 f' X" @" }% s3 I
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__)
    1 I6 K) T. P3 k& U( ?6 a
48. #else
    
49. #define DMA_PRINTK( x... )
    - }4 l- o# A0 l: A1 s
50. #define DMA_FN_IN
    * J! l4 w; j9 C2 w  |: _* A5 i
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    - P6 n9 @8 x  }$ T/ M3 ]7 i
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    9 y. C% [6 T& f) Q+ \" [, s! G1 @
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    0 P& q0 o3 ~  W4 h7 M" X; d1 Q% v$ }
63. 
    & e/ ?  X8 L" b* Z0 F) f% j" x
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);
    , O2 D2 Z4 X# h1 b
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    2 P8 S' ]8 r* [3 y: Y. Q
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    2 R0 D9 f* f& x% H1 b
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
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
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。

+ o" S0 S' Y+ g# \3 M