OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ' H6 @% [6 J; ~0 @
2. /*
   . _1 U$ ?* N  @& u1 g' r1 y
3. * edma_test.c
   4 d) e7 p4 V* Z! d4 b: b
4. *
   
5. * brief  EDMA3 Test Application
   6 `7 O8 l8 E* A% f5 |: F/ P
6. *
   
7. *   This file contains EDMA3 Test code.
   3 P/ G$ M* r+ G1 H6 g# c9 a
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
    
11. *         TO CHANGE.
    / r% F8 u2 i, [4 c
12. *
    0 i: x. C% n& s( w0 r1 G+ N2 }5 h
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    / ]. X( j: J2 w( F) T7 k: c% k+ ^+ z
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    ! W6 F, [6 I. r8 j1 o0 ]
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    3 z: K8 M2 ~( P" g% K
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      @3 S- b1 `% f1 F, y' @- z
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    . c- f, A2 K) f0 q$ E
28. #include <linux/types.h>
    9 z. N! A: h9 O  C
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    - ]9 t4 N: N' O) m3 @
31. #include <linux/moduleparam.h>
    ; ~) V# L( {" x
32. #include <linux/sysctl.h>
    0 f/ A# O6 ]6 r( h* g, M& v6 z: b
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    2 f4 g& l3 h4 k& X5 Y4 o! {! d
35. 
    ( u1 {! R) i+ |8 u9 v4 e8 A" m
36. #include <mach/memory.h>
    ! W0 W' S1 q. v% ]
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    5 l' [: F! f3 |
39. #include <asm/hardware/edma.h>
    % X' }, H9 x( W* L
40. 
    % i8 p* E6 m+ k/ l! b& `8 Y
41. #undef EDMA3_DEBUG
    2 [1 P% m5 r! R& |0 P6 K( w( H" g. B
42. /*#define EDMA3_DEBUG*/
    $ Q( ?/ O* x% i2 S; k+ Y
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    : M+ q: p3 n6 o# a0 Q) v
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    1 {0 N4 `& W4 P/ i& P5 \: D; |, @
48. #else
    / F: a0 d/ s9 i
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    & u/ ?" I+ O0 u
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    5 {8 n7 Q% u8 C+ o- h
56. #define TCINTEN_SHIFT               20
    9 E0 }$ Y. e& ]( v
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    7 W- I6 l, x1 k  E* p
59. #define ITCCHEN_SHIFT               23
    1 X2 c, n: r% J7 e9 n+ G
60. 
    4 R9 O" b* T( G! k- v
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    4 V& _; Y! b. t
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    6 `6 p& w& K( p. W7 C0 ~9 n- L3 U+ w" M# `4 r
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    - @0 r0 b+ x  R+ m1 K
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    # K& }) ^1 f" N5 q& c- e
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    8 ?2 X9 B4 l2 [3 H  P" P
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    " p. Z! v. M* s1 [
72. 
    " `4 Y0 t/ k2 w3 z9 R* K6 Y
73. char *dmabufsrc1 = NULL;
    + q2 r2 [7 n' q# a) q
74. char *dmabufsrc2 = NULL;
    , E, R# }% E, a( b4 M
75. char *dmabufdest1 = NULL;
    4 `: K. H! J8 A/ u
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    # G$ B# G! F) p
82. module_param(acnt, int, S_IRUGO);
    * b  Z8 i4 U) X. @* @2 m% _
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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

4 f) y) H& D) l
4 ]- ?5 j  J# |/ U