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
   * K  H2 Y# A6 h3 \5 v0 P; ]
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   - n5 s; N- J9 L4 }- _& W3 {& }5 T
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
      w0 V% K  x' i" b6 c' j6 \1 a: Q/ |
11. *         TO CHANGE.
    
12. *
    2 y4 h2 q3 z6 c* `  w( O6 M+ S4 T
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    + A' D- ^' [- @2 f: \$ r1 U8 _2 H
14. *
    % e5 h  w) b- z# ]
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.
    / u& Z, h/ Z5 U: A
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    9 S+ h- e' f0 h" o6 r$ W) H: D2 {
20. * kind, whether express or implied; without even the implied warranty
    / Z( P2 w+ T% K0 Z+ N% s# Y4 Q
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    ' h6 i$ }8 I7 q  S3 X2 z& R: D
23. */
    
24. 
    8 ~- Y3 g; N; L4 m- L
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    % e# f& }8 t5 O* N2 e4 ^
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    4 a  ^( w5 S8 Y' b; i. }7 p+ r
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    " I4 I, h: A% P, V1 A# n
35. 
    6 [' v9 f2 r' @# R  O& D
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    / ^: y  [5 ]* C$ N, }
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
      c& i6 [" R" k- c, Q
43. 
    : s# e2 c8 {/ u- N7 |
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__)
    5 \. N3 B6 Z# ]
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    ! Z# E& K; y+ I1 G# v& G
48. #else
    * h# [3 B9 a9 \
49. #define DMA_PRINTK( x... )
    3 w  @! j1 d& u$ w) M
50. #define DMA_FN_IN
      M& t$ E: W) |& Q. [; _
51. #define DMA_FN_OUT
    
52. #endif
    0 s/ B, v  b+ r
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ) m/ B! `8 Q1 C
55. #define STATIC_SHIFT                3
    5 R: I7 n; F! V2 w# y
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ( Q* ]; }) ?* i  n% p' q  S) J, H3 B
59. #define ITCCHEN_SHIFT               23
    % M% O0 g; a/ ?8 L% e1 R
60. 
    
61. static volatile int irqraised1 = 0;
    . ?7 X1 Y1 Y8 d1 h) u* M+ ^1 t
62. static volatile int irqraised2 = 0;
    4 ]+ |& g2 `4 u
63. 
    1 ~1 x! I7 f, Q( W4 D# B
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& h' {% L3 d) [0 K7 {+ |5 O
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    3 n4 x2 }. T) f! P, k3 y- {7 A
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    6 h" j/ X# |" I; b& t1 J  L
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    # w: m4 P0 m9 I/ I0 k8 M
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    + v8 F! d2 l$ ~8 K
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    5 d# ?3 v9 f" _; E. Q
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

" n8 G2 q5 O8 I/ G) J0 q% ?
      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
; _9 p9 ]1 G% ?# k# f7 c/ {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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。