OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   / }6 z2 K7 q; w; i, ~
4. *
   - a8 u+ {4 t  d+ h! y
5. * brief  EDMA3 Test Application
   " G$ [$ H: u, W! s
6. *
   * S& h8 V4 L* O
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
    6 a- z, h) Z7 R5 ]
11. *         TO CHANGE.
    # j0 g  e/ D) B( R+ P. B7 ?
12. *
    / o3 e# `% T; R" ?+ y" w
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 H. M" J6 p. ~: j
14. *
    
15. * This program is free software; you can redistribute it and/or
    8 m! u5 a6 R9 i' i6 q$ p+ r
16. * modify it under the terms of the GNU General Public License as
      m, o. V: Y8 i4 z. h* ?
17. * published by the Free Software Foundation version 2.
    
18. *
    $ \. R8 Z7 ]3 h2 I, t
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
      e4 s2 [% l( z2 c6 u' ^
20. * kind, whether express or implied; without even the implied warranty
    0 z1 }$ N3 D$ B
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    1 d9 p' e4 u. h) o
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    7 n! \  E$ o' y# P
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    + S9 h! B% J& N3 O
29. #include <linux/interrupt.h>
    : |2 i& e0 L$ N! Q% G
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    : ~/ x" `5 f# N+ D# U8 p  L( \5 D
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    0 v3 F+ E& W0 n& L- i
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ) k/ c9 ]+ B3 e" d
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    1 g6 U9 C8 \+ y' m5 C" J
40. 
    
41. #undef EDMA3_DEBUG
    4 J" o- u! p- n* h# F$ e$ b  q
42. /*#define EDMA3_DEBUG*/
    
43. 
      k; X+ d3 Z* a0 P7 Y- f. X
44. #ifdef EDMA3_DEBUG
    3 z3 d: J6 y% [* l3 \$ f
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    # k" [/ e7 ~. |$ |+ q6 }3 \2 K4 d
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    9 e5 S8 @: V( o& {6 m
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    8 H4 t4 S7 m1 G' U; l4 Q: U% I) ]; @
51. #define DMA_FN_OUT
      a$ J- a  E( g6 _* t2 r
52. #endif
    
53. 
    3 D, v5 \! e7 J& Q( h
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    # b# g9 J6 |" U5 i. X( I
57. #define ITCINTEN_SHIFT              21
    ; j  ]0 W9 d3 f
58. #define TCCHEN_SHIFT                22
    6 F! t& _. f" k9 J) z
59. #define ITCCHEN_SHIFT               23
    
60. 
    ) L* S5 c. N8 ~
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    ( }! {4 B* u' d/ M
63. 
    " G, A% H: M; l1 \1 |- c
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);
    , j' b; b7 ^( S. X
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    + }' Z. h7 Y2 I/ g8 U! b0 V
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    ; q! u. `! Q; l' {! U8 l5 C
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    ' R2 F3 N) {, }8 q8 R3 O
74. char *dmabufsrc2 = NULL;
    . E  K  H% K$ u. Y( T
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    * P: n7 i/ U5 w$ u9 p( u
77. 
    + r5 Y8 a8 h0 u8 b; u) K: G
78. static int acnt = 512;
    7 g  B7 M& m) v+ N* B$ t# Y
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    $ D# U" A3 e/ z/ r" f5 h
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    8 Z& ?) d6 T. Y) |
84. module_param(ccnt, int, S_IRUGO);

复制代码

; C, x8 g0 ]' e$ S2 n) A5 b
% b- R4 b9 K  W3 e      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。
3 t, v! H1 b( C* s* 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。

/ P% v2 |5 S2 I5 p/ L7 x