OMAPL138如何在Linux下使用EDMA3驱动

yyj

6 a9 z& H5 C* F  E' K1 C! k. G

1. [code]EDMA sample test application
   . A- \! q/ C) r$ N
2. /*
   9 {' L8 W) T  P$ ?* X
3. * edma_test.c
   
4. *
   3 J6 y5 u. p  Q- @- m- B) ^* L7 w
5. * brief  EDMA3 Test Application
   
6. *
   * \2 V5 t3 H0 o- ~
7. *   This file contains EDMA3 Test code.
   
8. *
   8 X) j/ Y- X% ?; N8 K
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.
    
12. *
    8 y, b# ]' j9 g3 _! F* ?% n+ A2 r
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. *
    + U: k4 t5 f6 x4 d. Q, U' Y6 f
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    , c6 x, G- N/ U) q
20. * kind, whether express or implied; without even the implied warranty
    5 r" k% j: z0 C$ j9 Z' M
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    " C, t$ S2 H; s( b4 N
23. */
    - Z9 d# j/ j7 y9 T# c9 S( s6 e
24. 
    
25. #include <linux/module.h>
    ( X1 D. h8 M- O# H/ Q/ q  _
26. #include <linux/init.h>
    6 ^0 O5 }9 O7 t, [$ U' [& i  g4 K* I
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ' \* w7 U6 B% D- s( ?" X
29. #include <linux/interrupt.h>
    9 ~; s/ x: ?2 {& `( K
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ( I4 l& f0 ?  |$ E8 v7 Y$ A* u& R  \
33. #include <linux/mm.h>
    ! t7 n  U$ e3 ?: A. B! T- w
34. #include <linux/dma-mapping.h>
    3 ]" F; H  z1 O) [+ Q
35. 
    $ m  l/ a1 B9 P: p4 S  E& {
36. #include <mach/memory.h>
    ) @# I2 \4 f# I+ T, N- Y/ h: u
37. #include <mach/hardware.h>
    - W. [7 @; r. B9 y) k2 O& W5 q
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    ; V5 V3 l" A! e( Z- R' h4 C
42. /*#define EDMA3_DEBUG*/
    
43. 
    , ]7 g1 a- H! n$ R; p( g- D! U
44. #ifdef EDMA3_DEBUG
    " v9 ?/ A; R" T6 _/ ?5 S. s
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    % P( |; i$ u1 b. Q* `8 s
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ' A5 {, {' b/ A6 i% E
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    2 G% P. n) T! z% b% f
48. #else
    
49. #define DMA_PRINTK( x... )
    . d5 I6 D* ~  ~" }& T; |8 B
50. #define DMA_FN_IN
    9 ^3 \/ k0 G6 X9 i& e. T
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    - B+ h- N% k7 z2 a( @
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    # |: y: r  L/ f, |! y% f5 x& |5 T
55. #define STATIC_SHIFT                3
    : p5 N; R2 ]5 J+ J3 a! I
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    " g) j9 [( V* N8 u, ?5 `' }
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    . `; \% I6 L+ h( _
62. static volatile int irqraised2 = 0;
    ( r5 N+ A! @; T0 L$ }5 c: R7 {: g
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    $ h" R8 U' d7 e; x( G8 O  ]& k
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & v; @& s- n" ~- D! o, l
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;
    - {2 C5 N! b, ]
69. dma_addr_t dmaphyssrc2 = 0;
    9 F# n( L1 d' S9 V& t5 J+ P9 l8 @9 Y  I5 L
70. dma_addr_t dmaphysdest1 = 0;
    8 ~: v4 X  ~0 l6 D# f$ ?
71. dma_addr_t dmaphysdest2 = 0;
    6 K! p+ c  n# d0 h
72. 
    
73. char *dmabufsrc1 = NULL;
    ; _! |& w, T! c+ A' G4 [! V$ s
74. char *dmabufsrc2 = NULL;
    8 N3 W. K/ n9 A9 {: A
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    4 Y- U5 E# g/ A6 o: l
77. 
    0 b6 o5 J" B  u0 f' L( _, X
78. static int acnt = 512;
    0 P' Z; p& A  r) u2 @1 i
79. static int bcnt = 8;
    ( u4 e9 {+ S) R/ t
80. static int ccnt = 8;
    3 c* _9 P1 X( i2 h8 ~% d0 b6 T
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ) L& M- E1 m1 A' m3 b$ s# s" O4 l
83. module_param(bcnt, int, S_IRUGO);
    # [: c1 X& D' T$ i9 `% m
84. module_param(ccnt, int, S_IRUGO);

复制代码

4 q7 x0 }3 ]1 P" \5 B      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
$ B# F5 N7 V! {( [" |- 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。
: S9 }; B2 e& h/ o/ W

( t9 H/ v+ |% Y' \# @) q