OMAPL138如何在Linux下使用EDMA3驱动

yyj

- E" E' [" |# M9 m! q) O" x

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   ! ~; m9 m& L3 `; W
4. *
   ( J8 Y9 D: a% R; d2 ~) }9 R
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   7 |/ ~# A; ^' x# h& w+ w, d4 `$ r
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   . \( z9 f& i" f1 a: M
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/
    
14. *
    : ?/ h+ m5 Q/ y2 M* B
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
    ! I3 Z$ a& o6 m+ X$ p  \
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    / }6 H0 s% B, g! G5 y/ ?/ u
20. * kind, whether express or implied; without even the implied warranty
    + u  d4 w6 G$ `, B
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    7 D1 l! z( X! N) G  n5 E
23. */
    
24. 
    0 Q: [: Q8 f0 v* X" c
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    - C/ T; j- j1 s. A/ f0 j3 U  w. r
28. #include <linux/types.h>
    ; s, u& {0 l. l8 Q3 N
29. #include <linux/interrupt.h>
    & e. o4 F) d9 d4 O( r' m  ~. B
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    6 T! p$ y4 c" l- h% t
33. #include <linux/mm.h>
    4 Q$ X* W/ ?8 ~. T
34. #include <linux/dma-mapping.h>
    
35. 
    6 _  C) [# _* ~6 [3 X, x
36. #include <mach/memory.h>
    ) y0 _3 x1 k9 r. n' l
37. #include <mach/hardware.h>
    # ?, r9 c1 A; _' r6 p2 W
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    % ?! ~, x/ ]0 E6 E: x
40. 
    
41. #undef EDMA3_DEBUG
    " H. G: o( D  M6 F3 J
42. /*#define EDMA3_DEBUG*/
    5 m5 A0 A8 n/ p0 }
43. 
    
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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    , v" T% v9 V+ G
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    / I! U3 S4 }/ A! L+ n
51. #define DMA_FN_OUT
    1 y# J4 Y$ i: j: k& w, I
52. #endif
    ' F6 C, S$ C' d+ E0 {& H
53. 
    8 ?2 Y! r, l/ b. S* `$ g0 ?5 _; @
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    . H1 w  V0 u9 e* a) Z. C
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    1 ^4 K8 M% m9 A2 T1 K. S# p" Y2 a
57. #define ITCINTEN_SHIFT              21
    6 _, @* r( L9 N2 D- f' R9 O" M% E
58. #define TCCHEN_SHIFT                22
    4 H/ `$ G5 O. y, ^; M. m
59. #define ITCCHEN_SHIFT               23
    * h# O6 |  S  S% H
60. 
    ' u; T2 E+ l% t: e6 C& C# c
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ! W1 O! C, C% }% ^) j$ Z0 J7 A/ z
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    0 R2 X  I- [/ A3 v8 a
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & i! p& Q4 R5 R/ V, Q
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    2 `) t4 E0 S$ L$ e2 M7 W6 Q
69. dma_addr_t dmaphyssrc2 = 0;
    3 i8 D2 n  G5 D" @# E; T# U/ V
70. dma_addr_t dmaphysdest1 = 0;
    ; {8 Q( z3 |+ [& M  r- E7 v8 b
71. dma_addr_t dmaphysdest2 = 0;
    " d$ N* @& s3 p9 @% j
72. 
    9 a! Z# [) f6 ]& n0 \# ?, B3 ^: t8 Q
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    5 ~+ v7 i1 r( l
77. 
    
78. static int acnt = 512;
    $ G2 K) x, O# V
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    4 X5 v( O4 {) R
81. 
    7 p# m7 J7 y" O9 F5 r5 ^2 b
82. module_param(acnt, int, S_IRUGO);
    ( l5 ~5 z& w" o) y# e( O# a
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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
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。
, m! H% Y! Q& B; v2 \6 ~  [     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。