OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   + h6 j# ^. o& x, B; a( Q& J8 T. @
2. /*
   ( V8 _6 J! p* c. M
3. * edma_test.c
   
4. *
   ; e& u; Q+ G9 O5 O4 }1 k
5. * brief  EDMA3 Test Application
   
6. *
   $ X6 Y" P: c& b8 k/ h# U
7. *   This file contains EDMA3 Test code.
   1 ^. {/ q3 g3 d1 H' B
8. *
   + u* `# n4 N3 v
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
    / @5 T8 Z, ]3 Z/ D
11. *         TO CHANGE.
    
12. *
    - D* t4 U/ ~' T3 A; ^2 c
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    9 l' B1 `& }* P" O  F. ~. \
15. * This program is free software; you can redistribute it and/or
    7 t( _% v+ X( R2 {+ b
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    , E7 k- X" X  a( N4 j7 k
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    , }6 Q8 C, l0 m+ h3 D6 C! o
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    2 L1 z6 u; G. Q$ O% O
24. 
    : s4 i8 n/ J1 h5 P! M* z: n
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    # f7 {/ Y. C! _, M5 f1 D
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    3 G3 r- y' v6 a- l* _. x6 U* ^% V4 L% v2 d
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    4 d) B( e6 |$ s. w7 Q: |
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    $ H5 l. P& M/ N. v& @  ~
35. 
    - S4 l5 O: f2 b) n3 u, s/ a: k
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    3 _0 C3 P0 C, _' E0 \' e
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    3 U- {' [* t6 v8 S' _
40. 
    3 m- M! f6 W: ?7 W
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    4 C  A# P) J8 [9 @/ n& n( V/ Y2 V- p
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    / a* L: e9 B# Z1 e7 V) b
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
    $ ~7 E/ C# v: b
49. #define DMA_PRINTK( x... )
    ( {" j3 F& }; I9 W4 I
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    9 O5 K& {8 D% q  D" p% l
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    - ^1 i; A: D8 j- P! ~
56. #define TCINTEN_SHIFT               20
    6 E: A. `1 C" m# u7 G! M
57. #define ITCINTEN_SHIFT              21
    " k% `2 @& B( K3 C$ m
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    4 M/ G6 Y8 }% {1 T
60. 
    
61. static volatile int irqraised1 = 0;
    8 r8 r: X( B3 R0 d0 ~
62. static volatile int irqraised2 = 0;
    ' X4 o) S6 L: m( Q) H
63. 
    * K4 B/ C1 Z: z9 U$ r* R
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);
    " a/ M9 F, V  N1 @+ @4 O
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , S7 ^; I+ \, o
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    $ o$ b: e; p; }  T8 Z% ~" a
69. dma_addr_t dmaphyssrc2 = 0;
    ( @/ u; A% d% s. W. P0 U+ J2 G4 e
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    5 x4 g% J; Q' g2 _$ c& c4 ~4 W
74. char *dmabufsrc2 = NULL;
    : a3 c. d3 X9 m9 d/ a
75. char *dmabufdest1 = NULL;
    ( N6 J, P0 g/ H, o. t
76. char *dmabufdest2 = NULL;
    - V2 U1 }: J' X+ a& I9 w1 S
77. 
    
78. static int acnt = 512;
    0 R4 C. l' Q0 h  f5 ]( Q) ^
79. static int bcnt = 8;
    & H8 G2 c4 s# T  T; E
80. static int ccnt = 8;
    
81. 
    : Z2 X7 r- f1 ]1 `' p
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

3 ^* z: K" m3 `! L! t6 x1 Y
      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。
6 k' X8 J' Z2 m, Y4 V