OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   . l6 n( M# e# Q; C1 G7 b
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.
    1 b! M! P6 m4 {$ v( K- W- A
12. *
    ( W& V, m5 T2 u2 r; B" ?: L
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    , T5 n& O7 _% z. ]2 b7 l4 f
14. *
    
15. * This program is free software; you can redistribute it and/or
    * g6 b1 o7 O- k1 y" J% H( l
16. * modify it under the terms of the GNU General Public License as
    ' X% E3 f5 ?8 C$ g" {% p
17. * published by the Free Software Foundation version 2.
    
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
    $ |: S# I! f. a2 o  i0 i* r
22. * GNU General Public License for more details.
    
23. */
    - |4 Z  R8 o. W1 V1 k% u
24. 
    
25. #include <linux/module.h>
    ' {5 T: O2 F* X1 `
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    / D1 e9 n5 ^" l% Z( |# f3 ?
30. #include <asm/io.h>
    3 X" p7 k: s3 U# `+ Q
31. #include <linux/moduleparam.h>
    4 ~( C  s7 @6 q; N6 N, M9 z
32. #include <linux/sysctl.h>
    - J( E% ]- {9 T1 {
33. #include <linux/mm.h>
    / [- x: k, G+ b( U# l- K
34. #include <linux/dma-mapping.h>
    $ Q7 e8 X* N2 m( r) j5 a' C
35. 
    
36. #include <mach/memory.h>
    5 z8 s- z" ]* S$ Y. O" a9 E
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    4 l' J+ F5 S( ]. B/ s1 f" D3 k8 g
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    ' X' r( b+ Z; N$ @
43. 
    ! m( q8 i- E' T" s$ c0 B8 ^
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__)
    & z0 }$ A) p3 C* \  m
48. #else
    , R/ K$ s9 j( v9 ~
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    $ c" o6 {9 j+ Z1 {, p( ~; P+ C! p1 \- H
51. #define DMA_FN_OUT
    . ~% L3 k! j  g: t& ]
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    , S% h: g' A0 J  g1 d
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    + \+ W: D2 B6 p- }) E3 L
58. #define TCCHEN_SHIFT                22
    , }6 `, r. L9 G' A
59. #define ITCCHEN_SHIFT               23
    ( ]- S1 A8 }1 G! d9 O3 k
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    - I6 {4 C4 {3 n+ |: w2 t& B
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    1 A0 Q! r! q  `6 ^
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);
    3 d: X; t4 O0 g# ~* x
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    * O+ ~) O; z' |; S! r, |$ |9 o
69. dma_addr_t dmaphyssrc2 = 0;
    " t, W0 N2 T$ i) J" O
70. dma_addr_t dmaphysdest1 = 0;
    ( K; L) |" Z, v/ n2 C. M. c% Y
71. dma_addr_t dmaphysdest2 = 0;
    # ]. x9 K" [" h! C. S5 g  ~
72. 
    . b" O+ S. S9 v8 ]5 |0 L
73. char *dmabufsrc1 = NULL;
    ( q! T  i" [! m3 P# f
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    0 U3 h; t  D  ]& w4 `0 O1 R
76. char *dmabufdest2 = NULL;
    / g6 j) H0 a+ R4 b
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    3 H9 V, C: i" w1 G9 P& o
80. static int ccnt = 8;
    ) g7 {6 I, U1 W2 f0 K; y& t
81. 
    7 ~- f6 ^/ j6 X) T4 h
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
$ g' X8 b6 T: O2 _7 barm-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。
% f1 m' E% G& u1 B2 X  a. K" s& f% M     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

/ [" G# g' Z& Z- a0 E8 Z9 E