OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   ( p9 W* }; _# H3 v( _' y
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   9 w6 l9 E  e' q4 Y( t' a
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
    8 Y; u* }0 v4 V6 \2 O  A9 p
11. *         TO CHANGE.
    
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
    
16. * modify it under the terms of the GNU General Public License as
    # E- h- n2 D  v
17. * published by the Free Software Foundation version 2.
    ' I, ~8 E9 O9 i7 k: z) Y  U: p5 I
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
    * o) t& Y7 k0 f& M+ l
22. * GNU General Public License for more details.
    
23. */
    ' S# E. T' ?% _0 I0 \
24. 
    8 @, o1 U( s0 |0 B* Z
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    " }/ A' z( k+ R" ~* E% F
28. #include <linux/types.h>
    + {( ?% K+ G  [& v
29. #include <linux/interrupt.h>
    ( C. N, _! {# w7 a1 i. @/ W
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    7 g# D9 ]- [3 k) q4 c6 d1 F  O
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    % o0 D# Z# T3 ~% ]" Y. ~" r
34. #include <linux/dma-mapping.h>
    
35. 
    2 u# z( h( Y% ?6 A
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ( L  m6 t3 K: `* Y
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    * t; T2 z3 _: O0 u* f+ z! k$ h
43. 
    
44. #ifdef EDMA3_DEBUG
    8 O* ]3 g. v) N3 Q. L. d
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    % z5 d- T5 Y. W: N& p3 y8 O2 x6 e
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    , `: M8 f7 x, z4 N9 }' R- _0 A* G
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    , N4 P3 V1 [) A( D5 d% ]+ d7 b/ a9 M
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    % q' R" k! \/ b" C6 h) }
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    % E% U8 x$ u9 e1 T2 s
56. #define TCINTEN_SHIFT               20
    4 q- R6 b' W, w& v( V
57. #define ITCINTEN_SHIFT              21
    6 S' [7 H2 N! d0 K5 \) M& ^  F& G4 ~
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    % S  j( Y5 h; w' N& C( x
60. 
    
61. static volatile int irqraised1 = 0;
    . f) K; H# V7 [2 \1 r
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);
    3 A" _5 j+ o9 g6 [; B
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    2 Z! D( d' _, O( Y4 K: D
70. dma_addr_t dmaphysdest1 = 0;
    9 y" y  b! k# c7 ?' w  q: n6 F% X/ D
71. dma_addr_t dmaphysdest2 = 0;
    # E) q" c) a% L* p: ~, ]; h
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    5 n8 ~# g$ S# _& `# G( o" X6 @7 y
75. char *dmabufdest1 = NULL;
    ' ]5 m( f% O4 N  V3 p0 `3 n: S
76. char *dmabufdest2 = NULL;
    
77. 
    8 H( Q& f% \- u$ g9 x, j) B
78. static int acnt = 512;
    + L# ]" d( M  g- D
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);
    $ Z' b; X1 f0 ~% U- ^6 i
84. module_param(ccnt, int, S_IRUGO);

复制代码

0 Z, O6 C  L' x, ~6 S5 s      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。
, S, R+ m" C3 V. A+ ~) v
! Q2 K  m0 j  e' w* ^