OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   % G' |1 y9 Z. z: z
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   & N6 r$ f, |! E' u) X
6. *
   & l$ M: U( x& i8 U* Z. W4 H
7. *   This file contains EDMA3 Test code.
   * M4 f# R5 d8 f9 e* `/ y. v6 U: t/ m
8. *
   ; t/ W5 Y% m( B9 ]6 m/ E* n
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ! o$ N8 `3 b- `& ]0 s' ]# ^
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    ' F! R) h0 W1 @) y9 m" T' L3 W
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ( c" ]' v( ~2 O2 G3 G$ h' b
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
    7 T5 h7 o$ C; K3 d4 ?
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
      a( I- a5 r# r& g- {" D
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ! l& F4 ]8 G9 n3 l" ~1 b' j1 r2 f5 u
22. * GNU General Public License for more details.
    
23. */
    3 |- I5 ^6 r% W0 M8 q
24. 
    5 x& S5 _. {7 r' ~
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
      M: }6 d+ G# M5 W
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    / J7 a) r0 g4 R1 K
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    7 e4 o4 u7 l& ?! [# k
38. #include <mach/irqs.h>
    . }) [1 D- N5 A& [5 u  c& l" W0 x
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    / D8 ?- _) r( F4 E
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ; m. H, a5 o% U4 ~" E
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    # Q3 n, n$ k/ y7 W2 v
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    + S0 @/ p9 J, S: h2 e. j% g
48. #else
    2 W6 G8 R2 c, v
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    / p& f* D& Z4 G( {+ A  x1 N
52. #endif
    
53. 
    ' U% Y* O; n- z8 Z% h( z$ w
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    , X" X: J8 E: b0 e8 ^5 i4 h
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    " ~# V, R4 Q+ V  v0 \
57. #define ITCINTEN_SHIFT              21
    ' `# Z+ i# C! \" o! }+ n, m' x
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ! H( E6 w+ R* J& K& y4 T$ M- |
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    8 S5 P# A7 l0 s" x( ~2 n, Y
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);
    3 R5 [4 s1 {. }+ L8 H: }3 E
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    7 m) F0 `- z5 A- j, y0 U
68. dma_addr_t dmaphyssrc1 = 0;
    # R0 ^. n6 m4 @
69. dma_addr_t dmaphyssrc2 = 0;
      f6 l. B" J8 |/ x
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    . e& B& @" v9 z% a6 V& z
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    # h9 S/ S7 N# z
75. char *dmabufdest1 = NULL;
    " a1 L" z0 x, c1 a) j; B# |, ?4 ?
76. char *dmabufdest2 = NULL;
      k$ w" W  d1 Y
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    8 ~9 l3 L0 ]/ Y( u# Y2 ]. N
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    ! w& V4 W, `6 y5 J9 E
84. module_param(ccnt, int, S_IRUGO);

复制代码

$ p! E, S7 @; c& D# I1 @1 i
      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。

, u9 `0 A0 p8 Y( r! w/ l
% e! Z/ r1 z& k6 v* ?