OMAPL138如何在Linux下使用EDMA3驱动

yyj

7 {/ c: I% z; L# W- U5 u; o

1. [code]EDMA sample test application
   $ t) q6 A0 E% c6 _
2. /*
   # |7 y3 ^% ~2 o7 t0 D  I% Z
3. * edma_test.c
   
4. *
   , ?! r& C+ C) T9 k5 x" T
5. * brief  EDMA3 Test Application
   
6. *
   9 J5 H2 C+ F; W! [5 l0 G8 E
7. *   This file contains EDMA3 Test code.
   
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
    * P) H5 i' _% f, n6 y/ g2 Z5 o7 u7 A
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    0 J2 z3 W# H& a' T. f8 Z5 X
14. *
    
15. * This program is free software; you can redistribute it and/or
    ( ?' L2 t0 P( l+ r( S$ C
16. * modify it under the terms of the GNU General Public License as
    # ]& V/ d9 }0 H0 \0 c* X, D8 Y
17. * published by the Free Software Foundation version 2.
    
18. *
    
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
    
22. * GNU General Public License for more details.
    ; e8 Z" c# e% u( v/ I( `
23. */
    ; a, `* ~* X! `
24. 
    0 ]5 a1 p' m+ h! [' s
25. #include <linux/module.h>
    ; I; P3 r5 i5 c# y6 l% a
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    1 Z0 k8 x- M/ u4 |
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    . d' B: S# e: X
30. #include <asm/io.h>
    8 d% p2 v3 ]* f% q4 d4 B( A
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    . H7 X+ I/ c; |& M$ b
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    # g$ k! H5 H) @5 p' ]5 ~( ?
41. #undef EDMA3_DEBUG
    " @& x$ ^/ Z: ]
42. /*#define EDMA3_DEBUG*/
    
43. 
    : F, n3 i) j6 y  K/ @. Z
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    2 C' @' W: J/ s- m6 P
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ) Z) l* i$ \* W  B* g3 j5 F% r$ t" I
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    # }9 D3 \# ^; s! b
48. #else
    ( R/ y2 G% Y7 S! f
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    , M6 _' x# e7 A
52. #endif
    % ~) K, a# c* M' o
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    + d5 A! R9 J* i" d6 g  s
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    - J' [( c- s) P; ]0 m' T
58. #define TCCHEN_SHIFT                22
    ( b' M. a1 @. D8 K0 C, K! J
59. #define ITCCHEN_SHIFT               23
    $ `) d( _$ T) M1 `- j
60. 
    5 U+ R, d0 p. w8 a
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    5 b* M  _; X9 @& T. @. u7 p, {
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. 
    ' p) n; v1 X' |2 z, K/ m: h6 S
68. dma_addr_t dmaphyssrc1 = 0;
    3 [9 f. \" \: p' X% y6 E' z* g2 |2 u
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    ) H% l1 N( J4 {
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    1 f) K2 u+ p9 H" v
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ! Q; U4 b& `) Y
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    6 C) i2 v: z" _
81. 
    / K& P) T& }! J2 I. G
82. module_param(acnt, int, S_IRUGO);
    % `9 Q$ s% N6 f
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

1 D$ H! ?' g/ ]4 @  w3 b7 s6 M+ l* B
      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。