OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   # M7 `# o- ~; I3 \5 L* ^: M
2. /*
   
3. * edma_test.c
   5 D  ^. G; Y3 P! P; T
4. *
   $ w' P0 k' c$ W' P$ q! K) k
5. * brief  EDMA3 Test Application
   
6. *
   / B& l- z1 R' l( J& |- m$ ^* {
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
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
      T. G$ [9 B" l2 o0 B9 o
14. *
    
15. * This program is free software; you can redistribute it and/or
    9 i6 |1 Y$ F$ L
16. * modify it under the terms of the GNU General Public License as
    ; a" T2 y' i  K$ s6 h1 S; L
17. * published by the Free Software Foundation version 2.
    9 u; g9 ?* p# W" D& W4 t6 X
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.
    & L8 Z6 W) Y3 }6 I# L
23. */
    6 S# M) [! j6 Q% X- W* ~1 b" F2 h
24. 
    + Y2 P' H! j. K$ M" H2 m" ?* W
25. #include <linux/module.h>
    % t' C0 G, x  v3 j) n; q" R
26. #include <linux/init.h>
    3 N, p# H2 G0 q" y$ {
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    % H3 V& y6 k9 }" Z
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    2 I* A, P5 K7 _- I. R% Q" J
31. #include <linux/moduleparam.h>
    0 y, r) O& y+ K- I) ~
32. #include <linux/sysctl.h>
    ' U6 u: p, \# S# Z4 q& B
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    # f0 B7 O* q) U3 w+ f. i
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    $ }' I3 x6 i8 n" d- Y- r8 T
40. 
    $ b' N  ?8 R  a- Z8 l7 t7 D# ^
41. #undef EDMA3_DEBUG
    & F! r  S% X. j$ t
42. /*#define EDMA3_DEBUG*/
    5 s5 u5 J1 u/ x: |, b' c6 C4 z
43. 
    ) t. m  N1 D. Y+ U8 [1 J- c9 O
44. #ifdef EDMA3_DEBUG
    9 S& _" c/ \: O" ~( k0 v
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    # s* n( t: F' C; p$ V" @1 x+ x
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ' e2 q7 C$ ?  t6 L! @
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ( I- Q! I9 Q( W1 b3 p6 t
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    ! u4 T; V2 }6 G1 l8 {, }0 |
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
      A+ p, F  ]1 U, D
56. #define TCINTEN_SHIFT               20
    9 L* `- `, E; v; P; s  `2 o
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    ! O8 o% j) B' t3 _$ g9 b+ h6 l
61. static volatile int irqraised1 = 0;
    * L% D2 \$ n$ _7 z* b, D* m
62. static volatile int irqraised2 = 0;
    % e0 L- J, k6 r- K. }  |
63. 
    % J( ~  \* w& q9 E# n3 l; G( b
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    / [( F$ t! e1 Q$ @
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. 
    2 a7 W  }! ?1 W5 D7 O
68. dma_addr_t dmaphyssrc1 = 0;
    % b. L  g; D+ {; J9 e( a. e7 J
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    ) [7 b2 r- f& p% S  s" f( }
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    - C% Q3 C+ T: N( j6 q* M
75. char *dmabufdest1 = NULL;
    , D, y& r% `# E  ~( I
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ' w+ {6 @; }7 H5 c
80. static int ccnt = 8;
    1 X, N" j1 b. F0 ^4 c' ?7 h$ T- M
81. 
    - u$ z3 [$ j7 T
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

      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。
* H5 e# z7 f; l- f. V     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
2 w; D$ m; D9 m$ h3 M  F5 t8 l
6 Y" X* V: P' V) E: [2 @