OMAPL138如何在Linux下使用EDMA3驱动

yyj

5 u" U+ d# G5 d

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   + K' s, V- b; w
4. *
   1 b- ?; m+ H$ K1 S5 d
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   ( Z- F  N5 O9 I, y
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   7 R. R; k1 R. O& x/ I2 t6 q8 ^* W
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    1 }( o, {6 `0 e$ }
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    , ~( v5 B, A# \' E2 h9 M
14. *
    ) u: r0 D. f" [( \* O% e* r! q2 F
15. * This program is free software; you can redistribute it and/or
    2 Y$ D2 ?4 }2 y$ J5 R
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    + D. F, w/ z9 o* @4 ~
20. * kind, whether express or implied; without even the implied warranty
    + D" h  \' {/ K
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    0 i1 I2 D$ U% ~7 N3 [8 b1 w( o1 s
22. * GNU General Public License for more details.
    $ R% A. _5 I0 C: q3 R5 u6 s
23. */
    ! m/ T/ ]8 m2 u7 I9 X
24. 
    - ^8 |0 j: b/ n4 k+ Q! P# N" B
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    7 {" K8 R$ C# i6 W1 K& [  z
32. #include <linux/sysctl.h>
    $ S1 Z' P2 {+ v1 ?& c% u" N
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    , ?! N) s' G; ~7 E
35. 
    7 ^# C$ r7 i: A1 R- X
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    2 U( x5 F8 p! k0 _1 f* D
40. 
    + \2 H" T( Y- w  `
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    6 A& F" W# t' Q& r( m: K! j& X
44. #ifdef EDMA3_DEBUG
    0 L( Z0 I2 d0 ?
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    8 O7 [) n+ V8 S8 c& v( X2 i2 g# o" c: N
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    # l# U* @$ l7 ]' R
49. #define DMA_PRINTK( x... )
    ! B4 W2 I! F  R2 T0 l
50. #define DMA_FN_IN
    2 b7 B# [4 }+ S( m6 O$ B$ v  ^' g
51. #define DMA_FN_OUT
    
52. #endif
    " J- s  H. O$ t# m$ e, Z
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ) h: z# t9 r" d1 F
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ) {2 W2 `2 H3 R7 f8 u
59. #define ITCCHEN_SHIFT               23
    
60. 
    8 }) }+ Q' k# S2 r5 m' Y
61. static volatile int irqraised1 = 0;
    " }2 Y/ J9 d) Y( u# |) E
62. static volatile int irqraised2 = 0;
    % _' V: V  s6 B2 n0 N8 j- `- k3 I. M
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    5 |' T; I. F) r. D
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);
    : F- E8 _4 A0 H$ U4 z
67. 
    9 `0 j' X5 Q% T+ X7 c! l6 Z7 i& U. Y
68. dma_addr_t dmaphyssrc1 = 0;
    4 ^1 X3 O7 v; ^$ `( O+ L
69. dma_addr_t dmaphyssrc2 = 0;
    - b2 s5 \/ n, S4 g
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    : M2 l4 U3 @+ m! h. f
73. char *dmabufsrc1 = NULL;
    # @, x+ k! Z' E! a
74. char *dmabufsrc2 = NULL;
    ! f7 [! _$ d8 i. o- t1 l. a9 @% E
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    3 ~- C& @! q# x2 B* M; x
78. static int acnt = 512;
    
79. static int bcnt = 8;
    - g6 Y2 l8 e* T+ J% k, `) Y
80. static int ccnt = 8;
    6 O) j' Y7 i4 r) y
81. 
    
82. module_param(acnt, int, S_IRUGO);
    7 x; U0 r. z( X8 F
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

+ L7 t- R" \( c
8 y1 Z; T) b5 W$ t* P7 Z, C- G      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 u9 u" P6 D" s. a4 O. q* W