OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   : k+ \% |& J* g( ^  Z9 \/ v6 |2 Q# O
3. * edma_test.c
   
4. *
   " z2 B7 ]' L( _8 j( Y9 @
5. * brief  EDMA3 Test Application
   
6. *
   ( d3 [: C1 O9 ?* |
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   % ]5 v$ x! ~8 b1 Q% b4 _
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/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    8 ~2 ]$ i" Q5 E
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    ! o( v; i4 z9 i6 N
18. *
    % v5 ~- S" Y6 W& G) y9 p3 r
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    7 f& x) \2 t. e: v0 P9 C
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    5 D: i' @, ^6 ?% b6 m
22. * GNU General Public License for more details.
    : |- N- d; k/ Y+ J, S; u  y; F
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    - W5 S7 C2 S3 }: L" U
27. #include <linux/errno.h>
    ! l# w% t( s) j' K5 C: \
28. #include <linux/types.h>
    / t4 Q* ?- Q/ Q6 E" ^5 o( H' U) k
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ' |# e0 `' [) c$ e' K3 K
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    * [8 j/ R4 _8 X! |9 s0 V
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ) Y. a: V  J4 J6 t
35. 
    
36. #include <mach/memory.h>
    4 x0 {& O' W" `  g0 _9 `3 A; f
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    : q( o7 [3 y/ i/ s* W( e3 k! X
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    ; {; ~: ^3 @! ]# I  |- r5 V. z
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__)
    $ _0 v( R" t4 |0 |( T
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    6 R! O% `# ?6 B8 I7 t# E1 @9 m) n
51. #define DMA_FN_OUT
    ' r5 F- ~+ O3 k( ~
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    9 w0 w% o8 w; Z* l! R$ _  n
55. #define STATIC_SHIFT                3
    8 [1 J3 g& u' I  _
56. #define TCINTEN_SHIFT               20
    # S. V' M. i* M& i' y
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    + y- Z$ Q% T( Y  q0 E5 v  [
59. #define ITCCHEN_SHIFT               23
    / \. G, Z5 R9 _. i) a2 f1 b# J
60. 
    5 z2 ?* `* x) O5 R: H1 w9 \
61. static volatile int irqraised1 = 0;
    8 U" t& P- w3 b: |
62. static volatile int irqraised2 = 0;
    3 T- n  G! w. Z1 X7 a
63. 
    5 b+ |# F% q: ~, ^3 y7 b
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);
    9 j0 W! y: F( j2 e( E+ K
67. 
    9 V: p$ |  c2 p( h8 b
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    / q$ `* B* t- _( L; {/ Y
70. dma_addr_t dmaphysdest1 = 0;
    8 o' \7 y# I1 H4 L) X  k1 S
71. dma_addr_t dmaphysdest2 = 0;
    ( b# y# I$ u0 E( s$ ^+ G
72. 
    % g" m) C' G/ K) u4 A: w, M
73. char *dmabufsrc1 = NULL;
    7 {5 c4 @$ j! `* W9 s" N
74. char *dmabufsrc2 = NULL;
    ! i4 z9 _8 |' i
75. char *dmabufdest1 = NULL;
    " N5 \) |  D! F! k* o/ ^
76. char *dmabufdest2 = NULL;
    , e* ~5 V( E0 P7 V
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    4 B, [( Q! k, y
80. static int ccnt = 8;
    0 Y) X0 Q, L# G* }- N, T$ W
81. 
    
82. module_param(acnt, int, S_IRUGO);
    * A+ _; [; P- [  x# L% Z
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
! z3 I* O2 X% q% M$ Qarm-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。
* F/ f: N: z! I- O& x
( W8 \7 v( K8 B9 X4 _# t6 U