OMAPL138如何在Linux下使用EDMA3驱动

yyj

' A, k! \/ L( G/ M

1. [code]EDMA sample test application
   5 S! D* d6 I( Y( L
2. /*
   $ z. l$ ]8 M7 }4 x2 H) n3 {
3. * edma_test.c
   2 ]) U2 E1 `; f. l9 N0 ~2 T7 B7 d
4. *
   
5. * brief  EDMA3 Test Application
   ' ~5 g4 _+ z5 q
6. *
   
7. *   This file contains EDMA3 Test code.
   5 C  T; T1 y' |* ^
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
    " C/ }' ?  x4 e: w, q
11. *         TO CHANGE.
    $ y* w: r" C) F6 h/ G5 F- [' |) ?
12. *
    % W! e$ w0 [8 }; L- l4 q
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    : L# [1 }0 d7 |' O# e* k6 c( w
14. *
    8 U. z) o4 O6 k& w/ F
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.
    5 ?9 Z" P) \0 \, O) s9 e" W2 {  D3 v
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    2 F3 d6 d% r3 K  E) {+ z
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    3 ~& |5 `) E" j& B
22. * GNU General Public License for more details.
    6 n8 b9 u9 Y' A. A. W
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    9 J1 n  q- J- K7 J& i6 V
29. #include <linux/interrupt.h>
    ( z2 \5 j, L- u" z5 d
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    ; O$ x  I4 u- ?6 S. ?" e
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    $ J) v" v* F1 j- `% @9 b6 t
34. #include <linux/dma-mapping.h>
    ( e$ U$ o: X7 f
35. 
    & ^4 w: v: ]5 M4 [
36. #include <mach/memory.h>
      ~# V+ q; N4 @/ p8 |6 j- G7 z
37. #include <mach/hardware.h>
    2 D% V) p6 v! A& U( Z$ R1 y
38. #include <mach/irqs.h>
    6 n$ M+ b1 d4 D# ?; B3 n; f+ G1 D( W
39. #include <asm/hardware/edma.h>
    4 B$ p9 {+ s! h4 O5 z2 V, E. A
40. 
    - J* Z5 n8 [; H
41. #undef EDMA3_DEBUG
    # N' l7 t9 X0 ?- a& z' v/ C
42. /*#define EDMA3_DEBUG*/
    
43. 
    6 W" @2 }3 f5 q9 S$ E1 v
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ) W$ E( i4 H, C" U& t3 w7 D( f
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    5 [$ @) `- X% v4 D' ]5 j
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
      I& \; ?9 P# G. k$ N
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    + s1 i" m2 b" @1 Y% o
51. #define DMA_FN_OUT
    5 z5 R  m: P, T: a
52. #endif
    
53. 
    ( Q, |8 r8 B) v
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    : U7 g& L0 p: Y2 Q
57. #define ITCINTEN_SHIFT              21
    2 [1 D9 _9 c' u2 N$ P* G9 h3 o
58. #define TCCHEN_SHIFT                22
    & n; Q8 e# |3 |( }" p& {
59. #define ITCCHEN_SHIFT               23
    ; }( E/ |' j3 o( h" |9 q
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    8 F5 P6 K# U* D7 F. L
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    $ W" T' n. p% b$ K3 h( d
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);
    6 c( S3 K% m: b$ ]
67. 
    - }3 G+ y7 j: L* @! W6 A
68. dma_addr_t dmaphyssrc1 = 0;
    / x! w/ T9 w+ ]0 |
69. dma_addr_t dmaphyssrc2 = 0;
    ( L4 x+ P! H7 {
70. dma_addr_t dmaphysdest1 = 0;
    ! S' H- r' }) b
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    * m. |1 q! G  F/ N6 o
73. char *dmabufsrc1 = NULL;
    . o; G/ Y* |6 \7 `: F/ ^
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
      h4 P% f. x. {8 O& L
76. char *dmabufdest2 = NULL;
    
77. 
    3 p! m+ C( U3 t! @# q
78. static int acnt = 512;
    
79. static int bcnt = 8;
    4 Y" i" ?' \0 D( ~
80. static int ccnt = 8;
    
81. 
    ! y; H- j5 @9 X: u3 x( \2 p2 j
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    7 V- t  Y; `& N  V. e
84. module_param(ccnt, int, S_IRUGO);

复制代码

' E: Y2 r. b% a; M( {
      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
& P/ j* C8 E) m$ U2 P5 k% warm-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。
1 W4 u6 y" J4 S; i9 |+ E- R6 \7 M( O     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

% b5 n' j! y; x( h