OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   6 o4 q+ e. H5 T1 i
2. /*
     h4 O( C. T# r6 n
3. * edma_test.c
   
4. *
   ; i0 [1 E. c& H; c7 `
5. * brief  EDMA3 Test Application
   4 u6 x+ W' }; P4 e3 k! E
6. *
   
7. *   This file contains EDMA3 Test code.
   # p# j- |. D& s2 A* h
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
    ( u! C( t  v, z" v
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
    
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    1 s4 b1 l. Z2 q" ^  A
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ( V- t) m* s0 e4 r
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    - K# ~3 ~4 Q6 B
22. * GNU General Public License for more details.
    4 e% `8 z! g9 L* X* W: D/ x3 C
23. */
    
24. 
    $ G7 d4 I4 T' @5 Z) W, X
25. #include <linux/module.h>
    7 A0 T& y; ^% w2 B% A' h7 e
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    " p5 d1 f8 n; S1 p/ U' }
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    2 O+ q0 A: e5 K# T* |
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    * n" B0 z8 A* c  [- w- t% m
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    & ]3 {7 r# I: `* r6 a. P
35. 
      V: l/ _1 k6 e/ _# `' z  P4 I
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ' ~0 r% D6 {+ N) o9 Z. Z/ |% Q
38. #include <mach/irqs.h>
    1 f' v: o" P" G4 L- q
39. #include <asm/hardware/edma.h>
    # k: g  f7 P9 S* n& S
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    * U- u0 I+ U5 o, u+ |
44. #ifdef EDMA3_DEBUG
    # Y5 I: [7 E" ^, A+ t2 ^
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
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
    & d" l% e$ f+ v% i7 x# a( E
49. #define DMA_PRINTK( x... )
    ( n: ]* S) g8 f* I
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    : u/ r( O& _8 Z7 {& V6 A$ d
52. #endif
    2 H) p8 q6 ^+ j
53. 
    + x7 `, F$ g3 ]" z5 t
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    3 L" E9 d6 O  t. ^8 r! E* o
56. #define TCINTEN_SHIFT               20
    6 t& R) R3 E! [. I* a# G- Y, ]; \' a
57. #define ITCINTEN_SHIFT              21
      Y5 j. c8 E) q  D6 g% H: p
58. #define TCCHEN_SHIFT                22
    5 e  C' x9 l+ W' `2 |2 L
59. #define ITCCHEN_SHIFT               23
    
60. 
    7 c0 R; h9 W, E# H4 I7 j* V7 K
61. static volatile int irqraised1 = 0;
    9 ?3 l9 y' P* S( @; t
62. static volatile int irqraised2 = 0;
    2 b# Z& W2 s+ ^) [6 Q
63. 
    / _2 i' l: `7 ]( Y2 r9 }
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' w" o7 ~, b& e3 n: x% p9 s; F" _& M# ^% Z
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    9 [' G( w5 P- P: h3 |
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;
    0 b8 S" a/ z5 N  h: J0 \( W
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    * i$ ^) U$ ~% n" P; M3 p* {
71. dma_addr_t dmaphysdest2 = 0;
    2 `* U& `) |) \. G1 K2 G
72. 
    . h! ?0 ~/ J$ S& ~, }8 ^) Q% M; [2 `
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ) h3 J! o- {& `/ N
75. char *dmabufdest1 = NULL;
    ; i& _5 _! |9 G6 x
76. char *dmabufdest2 = NULL;
    8 y3 U/ C6 w$ E5 J2 F
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    " R+ x& F/ @* g
83. module_param(bcnt, int, S_IRUGO);
    * f! ?' O- [( m9 a: ], p. v8 r
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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
# t0 s2 _4 x* E* e% H
6 H& _: o# m6 u! |$ w( n