OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   3 K9 b$ c# }" y2 C6 X: n
2. /*
   
3. * edma_test.c
   & i9 T5 I; {8 t5 Q1 H4 O; a
4. *
   7 e) k9 X9 U% s* h
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   & S6 w, l0 L+ l
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   1 k+ u* Y8 l1 A
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    7 \. A6 g# S/ B. H3 ^) H
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    $ P* X& L  s' J. y
15. * This program is free software; you can redistribute it and/or
    : k0 j" V: c+ l% a" w* r4 H
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    7 v1 T! Q  Y5 o! h
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
    
22. * GNU General Public License for more details.
    ' W0 e& w) M9 Q
23. */
    & M+ {+ x8 b& h' r1 G
24. 
    6 F8 ^# t& i, G0 i- A6 B
25. #include <linux/module.h>
    2 q" ^1 M) Q" A; Q
26. #include <linux/init.h>
    ( \8 u" R& P/ R  L8 z- o5 ~$ e4 E
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    2 ]0 v% q6 s; A, \0 F6 l
29. #include <linux/interrupt.h>
    2 w" r7 q$ s- |8 G" j7 q$ u
30. #include <asm/io.h>
    ' R1 N# d  ^0 e& o
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    0 ^$ ~9 K1 A3 M6 ?6 y, \
34. #include <linux/dma-mapping.h>
    ! J2 y- U$ M% O8 S7 L
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    3 n* M) ^. [3 M# ]% P# L, x
38. #include <mach/irqs.h>
    9 C$ ~8 \8 X5 l
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    , Y& q: |! t& X3 R: R5 K* a
43. 
    
44. #ifdef EDMA3_DEBUG
    9 l8 P8 r- W# [& }9 p/ C
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    # n( a  H4 Y! w
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
      b" W4 c  H" }- n0 ^4 w# |
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    1 A6 ^' z6 Y2 g" p# Q
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    3 a5 K0 O. g0 L. u. w! q" D
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    ; @$ g3 }) D# P/ @* E) m0 N
58. #define TCCHEN_SHIFT                22
    , F, \. R2 z- Y( q) X5 i
59. #define ITCCHEN_SHIFT               23
    
60. 
    7 @6 t8 w3 G8 K; d/ q! ~" n3 E
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    8 c: _6 h8 ]3 l8 r. L
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    2 {( _, z% h. E  r' q; t) 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);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    1 \+ C2 x# B: a
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
      Z; `& ], O- o9 m
72. 
    * _8 F% q0 x2 m0 E' L8 n3 D
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ( y/ H; J; X; |9 q6 ]! C/ o
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ) c+ p  Q8 \! F
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ! L8 k. R/ `$ \% ^
80. static int ccnt = 8;
    5 J* L4 z1 t7 U! m
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

: c  N% [, M- E& P
      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
3 w+ l5 d1 F$ d! J$ G8 rarm-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 K8 k8 G# Q4 s$ {* g     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
- k7 M; H8 N2 Q+ k
. p" k; {% X: g+ v# w% N