OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ' I# l1 [9 n( u" l2 b+ O: \( c
2. /*
   - }9 `2 ]; _5 _# _, R
3. * edma_test.c
   + Y2 c" ~: E2 T
4. *
   8 n0 o" \  A1 Y+ s0 l) {
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   8 M3 a6 w# k9 P/ |
8. *
   - y1 H8 Q8 _1 M( e' s& }
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   3 p: s& e" U0 ?4 ]9 f! U+ _
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 ~. I: E3 L$ r5 R  {- L) ]7 o/ l
14. *
    
15. * This program is free software; you can redistribute it and/or
    0 G6 P  y6 Z3 m$ T
16. * modify it under the terms of the GNU General Public License as
    ( e) T! O2 f9 b/ g+ v4 W# M9 P- L
17. * published by the Free Software Foundation version 2.
    5 `" @) |8 }3 M4 p0 M& B+ u5 Q% @
18. *
    ' [1 e0 p1 @# ~  v
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ! ~8 R/ {; M. y, P
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    + b/ m! s& W. P% E
22. * GNU General Public License for more details.
    7 A6 n: S+ V3 w
23. */
    
24. 
    6 G. ~/ Q7 F& T6 ]5 J9 E) B
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    , I2 b0 P4 y5 U1 F: u6 N  k
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    % j0 a6 k5 n8 X* m$ G6 ?
31. #include <linux/moduleparam.h>
    3 s  S" E* B6 @+ P$ E8 M5 F* R
32. #include <linux/sysctl.h>
    & D( O; j& _5 M7 y$ @( M5 S1 o
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ! E. L: o/ Z6 v# m
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    6 ?$ _" Q( |5 w5 e1 b2 k
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    # K$ e) U2 F" w4 Z$ D
40. 
    
41. #undef EDMA3_DEBUG
    ; M3 D7 J8 Z) g) I
42. /*#define EDMA3_DEBUG*/
    1 W; e# h$ z* @2 t$ E
43. 
    5 {: w) s; t" N9 P% E
44. #ifdef EDMA3_DEBUG
    * u( G* q! _- @- h, }
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... )
    
50. #define DMA_FN_IN
    9 F% h9 z  C; [+ V  ?& R
51. #define DMA_FN_OUT
    6 S; n( e6 x$ n0 \; j( X+ l
52. #endif
    ( [7 M, L0 ?% s$ h" P$ L& p
53. 
    8 t: @3 c0 R. x" u. _
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    3 h; j4 j% M, _! q7 f" o2 p6 Z
56. #define TCINTEN_SHIFT               20
    8 [, z: S) P: D4 \
57. #define ITCINTEN_SHIFT              21
    , ]7 b" D2 w, v: [" }% b
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    , `! Q" h7 E  n1 r/ U  s
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    - R, J1 ]" |- H, o4 o9 f
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
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);
    
67. 
    - q- q  J1 V/ a; s# w
68. dma_addr_t dmaphyssrc1 = 0;
    3 F9 I  f2 _8 z/ t, E  o
69. dma_addr_t dmaphyssrc2 = 0;
    + x9 U# i5 H6 o" e4 n, ]
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    % r4 h, h. U+ w& l5 O+ [: l7 V' t
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    9 t2 U' f8 Q0 R
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    2 s' i( f. ^6 F, V2 ^
81. 
    
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

) {$ R0 o* {# s  b. e* `, n# {      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
8 P; m9 ~8 r. q1 l* V! m1 ]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。
2 |& _2 _5 K" ?+ P% |% a     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

( v; C" B4 D' V( f! J4 V/ F0 A& q