OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   9 a& r6 F& y# m2 z4 A# n
3. * edma_test.c
   : L3 {% R8 }5 R1 @# L: f
4. *
   # X$ _3 h9 l: T% @- X5 n5 M% a
5. * brief  EDMA3 Test Application
   / h# e% B7 b8 s3 |, X$ U4 R
6. *
   9 ^' M1 Q3 n* }8 [) L2 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
    # I$ N. k5 j) O+ N( H$ i! L
11. *         TO CHANGE.
    ( s* d; w- t& e* O
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    1 `2 C+ A9 z0 H" c5 E  a; B
14. *
    
15. * This program is free software; you can redistribute it and/or
    % l, J. z' H4 q4 B, S& x
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    ( b8 g! G, X: `% O3 V
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    / Z7 O: {- D! z( g
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    9 ?, Z/ F3 q3 n1 J  l( g
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    9 l3 g6 ]* z0 Y5 i& U
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    7 N- c7 {# R* V( A! l- C
30. #include <asm/io.h>
    $ l$ G) T5 z# q2 w
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    6 o) q5 [4 t  Z  V- Y% n
34. #include <linux/dma-mapping.h>
    0 L6 M0 c% W. b# q) m6 G& ^
35. 
    3 }9 `& [$ P5 [- f( i3 h2 Y) E
36. #include <mach/memory.h>
    ! C8 J4 d3 B! b0 [, C0 q
37. #include <mach/hardware.h>
    / v8 y; v& b6 h
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    5 K# `& {5 Z5 ^9 M3 x7 ~* ?+ h
40. 
    - `4 F% l. }" m* X
41. #undef EDMA3_DEBUG
    : j, ?5 Y% {( L8 A, S- s
42. /*#define EDMA3_DEBUG*/
    
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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    1 C/ `6 P$ P7 F
50. #define DMA_FN_IN
    1 o, q9 B3 i. S: f( K7 w
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    - b6 @3 \6 y: t* \3 S% i
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
      u6 J* U4 M9 \& X- y1 e5 ]6 ]2 p
56. #define TCINTEN_SHIFT               20
    " l( o4 \$ ^/ C7 v6 R6 }
57. #define ITCINTEN_SHIFT              21
    & ^0 f, C. p+ x# l* J/ I" ~7 P! t
58. #define TCCHEN_SHIFT                22
    / C9 Y5 T1 `2 B% G
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    ; {1 }7 z, O! Q, t: j$ s
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    . z  B8 Z& w  K9 b
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    9 o  p9 @" K( Q
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    " w4 \( _! S7 I& g; h. {
68. dma_addr_t dmaphyssrc1 = 0;
    $ L& ~. F8 _9 t4 l$ i/ C" R
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    1 q+ R  |3 }6 F4 ^, v" m# G$ X
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    ! M8 \6 k  W( P
74. char *dmabufsrc2 = NULL;
    ' Z. c2 a2 U+ p) M  e
75. char *dmabufdest1 = NULL;
    / {2 ], o+ d/ j
76. char *dmabufdest2 = NULL;
    ( J5 }7 n/ O! a
77. 
    ( b  c/ h! Z5 H! N0 v
78. static int acnt = 512;
    ; r$ a7 S9 p2 ]7 A
79. static int bcnt = 8;
    " D1 x5 }5 Y' I0 k9 E
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    " o/ e* K: a" J0 A5 `* K( Z/ K
83. module_param(bcnt, int, S_IRUGO);
    3 Q0 g. C4 |% Z, Z7 |7 M$ K3 i/ L
84. module_param(ccnt, int, S_IRUGO);

复制代码

% E2 k  S# o7 H      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。
+ N- E* x  G. a& W3 K