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
   ) K2 C& O+ }5 F" ]( B" r
6. *
   0 f1 `8 Y' X2 q
7. *   This file contains EDMA3 Test code.
   9 m, g; F. I0 _
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   " S- |  A% J. h* H% a& n
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    0 U+ `# W$ b6 {7 N; M6 |3 V( K( e
11. *         TO CHANGE.
      x; N  J! d# f0 n$ B& S. g9 w4 ]3 K
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
      j7 V8 `, a* X. g; |
14. *
    : l8 Y2 N% q; N2 w9 v" v; ?
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.
    6 p" E) n8 w2 w7 z' ?
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    6 ]1 J. M8 d2 D% d( T. v
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    + a) z1 d! r9 H* E, [, y) q  X
22. * GNU General Public License for more details.
    
23. */
    2 G& R& ~6 U6 m; s: {0 D2 u
24. 
    1 I9 P% ^# {" [5 f0 Z
25. #include <linux/module.h>
    $ K; ]& [& k* r: s1 O
26. #include <linux/init.h>
    5 w; I# F8 Z* L8 L. w
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ; {+ ~( _4 D7 z8 W, S: O
29. #include <linux/interrupt.h>
    * A% ?/ {, K5 A7 I  ~
30. #include <asm/io.h>
    " P- P7 ~( m# c9 ~1 r
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    * }6 d, P1 s5 i6 N, D) v
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    ' X) I1 U. E; p9 d# Q& r; [
35. 
    6 o" s. ^+ @0 y$ k7 ?
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    8 q3 H8 t$ X) a0 r; v
40. 
    ! u& W3 x! G5 J
41. #undef EDMA3_DEBUG
    & r: K0 u( v6 d% C
42. /*#define EDMA3_DEBUG*/
    
43. 
    1 J. S' r# l+ e: u$ _
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    3 j$ {, _( n% Z6 l5 i4 _
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    # M, }: q1 w9 N
48. #else
    ( ]8 ]/ _) V+ t2 I# a2 z# n) s
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    : P" O$ j1 j4 h& H7 w
51. #define DMA_FN_OUT
    
52. #endif
    % g+ w3 y! Q' c4 ?
53. 
    " Y  I% B7 `0 V. V  m7 h' w3 z
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    9 Z+ }5 ?! j- K
55. #define STATIC_SHIFT                3
    7 v8 n4 b  H  _  u
56. #define TCINTEN_SHIFT               20
    4 I8 D) m7 f0 [/ C% ]- {( A' g6 P
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    # O/ z1 L9 m% A+ ?
59. #define ITCCHEN_SHIFT               23
    / K; w% d  _  x7 {) ]. M
60. 
    
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);
    3 v* Q! V% w5 N6 `- K$ e4 Z, s+ y
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);
    ; N9 b0 J, A& v, W, h$ d
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    ) c5 A& P) c9 P
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    & p5 P) y4 y+ G/ v* ~
73. char *dmabufsrc1 = NULL;
    $ O; q/ v! D2 r$ O: l4 k5 j
74. char *dmabufsrc2 = NULL;
    ) }" m1 z( [. k& q. E6 w, N1 j
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
      O, Y2 o) F8 v$ [2 u8 i
78. static int acnt = 512;
    - J) q1 u4 G3 r
79. static int bcnt = 8;
    " ]. k7 h  v# a6 B
80. static int ccnt = 8;
    " L. m  r3 v# o4 D' p& }5 q
81. 
    
82. module_param(acnt, int, S_IRUGO);
    7 @9 ~' A3 l. {& E9 b$ p5 H
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

! I' V9 {5 o! N4 ~
/ t/ u% l; U9 D+ u6 U, M      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。
/ ~" u: Z  w" }0 c, J$ s4 X     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

1 @& r0 V  }2 k
4 F, l6 w% {! X/ A7 |  S3 \8 b