OMAPL138如何在Linux下使用EDMA3驱动

yyj

* X; o' H# d0 A+ t

1. [code]EDMA sample test application
   1 A4 O" t8 t) s+ `& r
2. /*
   
3. * edma_test.c
   ; g) X2 s# l+ G/ d. ~8 N( y4 O
4. *
   " @( T# W2 r+ i1 H2 x1 u2 g2 n
5. * brief  EDMA3 Test Application
   ! Z! y( V' f/ V& g& {9 Y8 v
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   - J8 A- q7 [. r, O( e8 k3 S
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ( l3 m  ?0 V& ?. z6 P' L$ \, V1 t
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    7 Z6 E  ]7 B9 w. }$ ?7 N4 x
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
    
17. * published by the Free Software Foundation version 2.
    4 m. y5 ]9 Y& f( ]& ^. G
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ; ?; F4 i1 u& \0 L7 l  ^. w& y
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.
    
23. */
    
24. 
    # D1 s9 L& c! A+ U4 R" W/ C: b: G
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    , ^7 p6 Y9 X  W' b5 N
28. #include <linux/types.h>
    6 B9 u9 g3 @0 ]7 Y8 l
29. #include <linux/interrupt.h>
    ) O3 Z+ @3 W9 V8 H
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    : \7 }- F) B: J! Y  p% S. A
34. #include <linux/dma-mapping.h>
    
35. 
    7 Q3 h1 T. [1 c  U: M. Q7 ^3 u
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    + p5 F7 C: |, p% N
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    2 y& L7 z4 h5 b1 o9 r2 r2 _' t
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    3 U" A; G8 S7 g* ^5 U) t; P% d
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ) Z" W: Z. g% e4 h& E2 m; S
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    . r: M" d7 a. W9 m2 q
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    0 ~" i0 j4 X# D: n( F
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    8 Y0 j: A  `5 ?# m5 Z
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    % j1 _# }5 F( p' k- P
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    9 N3 Z. s; C2 N# e- m
62. static volatile int irqraised2 = 0;
    
63. 
    + [$ n$ ~% ~! G, Y2 e
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 g& t+ P6 z' L9 E( ?
67. 
    2 E& X- G9 o' d% X, `, d2 l
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    * l& v3 h% ~+ E# N% ]
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    7 \( E) ?, b. }( q) }6 z$ X
73. char *dmabufsrc1 = NULL;
    8 W4 s( R  \! M& T9 M
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    0 }; W  f- }! @3 Y- ]0 t$ Z
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    + m+ j4 U+ a, ~$ \# ]0 C
79. static int bcnt = 8;
    % d0 W% i4 {; b  s) m& S
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

4 D$ [9 }, F/ z( p
# V  `# R" `( q0 t: 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。

/ h/ p7 S  o+ B& O0 i" {- n
* Y7 i) j. @2 t  ~1 Z