OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   5 d9 _- N  I; `$ t9 ^3 V
2. /*
   
3. * edma_test.c
   + \- n4 O# V: G
4. *
   
5. * brief  EDMA3 Test Application
   - F3 T' O: V. w- [8 J$ S
6. *
   6 K8 P) A! ]7 D* z4 ?; f+ T. m
7. *   This file contains EDMA3 Test code.
   
8. *
   ' P% J& P1 o$ y6 q6 B" z! v
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   8 Y# I6 O0 w' G9 A6 {+ a3 C& x
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    7 k: _! h% J8 e, S! h7 D; P
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    3 U. N2 c" C0 ~/ n" }5 E* q
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    / v# O5 F( Z6 o3 N7 ^
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ( J2 j( S$ a9 m9 v/ b" C
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    , i, i  I4 m- u6 I" p& u
22. * GNU General Public License for more details.
    
23. */
    
24. 
    ! b* e) B2 e7 K; `
25. #include <linux/module.h>
    ! k: X. F- A/ X2 M6 R
26. #include <linux/init.h>
    / @; ~9 Z5 ^' v  `4 m7 n' b7 Z
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    * ]* I( M7 s! w0 u1 O& ^
29. #include <linux/interrupt.h>
    - t  R* J) M3 }& @: `4 V" L
30. #include <asm/io.h>
    % K6 p& ~8 U$ f) j; P& r
31. #include <linux/moduleparam.h>
    5 D" w& w5 g- V) \/ Y6 _  n3 s5 h
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    $ J. Z3 L; L7 R: ?5 |5 D/ m4 e
34. #include <linux/dma-mapping.h>
    # n( A; K* y' G: W: D6 o
35. 
    : y2 X: r8 M" \5 c- C3 L2 O9 y7 p) P
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
      f7 }* @2 n' v" U8 w3 u
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    , U/ w9 b4 V; S. A, B! q
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__)
    . q8 Q/ \: Q: n2 N  p8 O4 J* C
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    * r0 {/ d9 \/ w* k9 u5 d! ~2 Y
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    7 _3 X- @9 z0 r! W
51. #define DMA_FN_OUT
    
52. #endif
    1 }) @: K& \4 ~3 B2 L9 N" a) h  G& d
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    0 [8 z6 C, B" a$ U  z& O4 O1 p
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    2 p% x9 z- e( d7 y* g: l1 V8 |
63. 
    $ ^9 W8 Z/ X9 j! ]( D: k# Z
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);
    $ `" r0 B$ q! g
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    & F! y" J# n5 R) l- `- i/ v& M! b
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    & O% V& M0 X1 n
73. char *dmabufsrc1 = NULL;
    3 Z% j' T/ j* _  e
74. char *dmabufsrc2 = NULL;
      `7 b5 `; q5 B- V* b! n
75. char *dmabufdest1 = NULL;
    4 H! n6 \  z% }1 A! B4 N
76. char *dmabufdest2 = NULL;
    
77. 
    , |% N8 B1 j/ N0 t! m+ a+ u5 i
78. static int acnt = 512;
    ) X5 r: {' ?+ n; U8 ]2 b
79. static int bcnt = 8;
    9 J8 N8 n( d; U+ r
80. static int ccnt = 8;
    6 @- ~3 J7 q' Z' z1 V8 t
81. 
    9 J, m! Z" t: |6 O; R
82. module_param(acnt, int, S_IRUGO);
    & j( f5 X( k8 J# q! c  V  W2 U) S
83. module_param(bcnt, int, S_IRUGO);
    % r! m' w0 I1 Z$ n
84. module_param(ccnt, int, S_IRUGO);

复制代码

( v8 s% D3 j9 s7 w" [! W
      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。

( }6 N6 i' x8 y8 Z' Z! v8 y2 U
! s" k: M# f# j/ A