OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   # g. E2 L7 J* L$ o' K# |; J
4. *
   ! p  c4 a2 U- N! v) G) a
5. * brief  EDMA3 Test Application
   
6. *
   7 [( E8 E" B- J4 R2 B. N  o+ `" W& p
7. *   This file contains EDMA3 Test code.
   - W" C' B2 V" `5 i
8. *
   ( c3 o  h. f  u* ~. C. U* R
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   2 |: y& P5 h- ]
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    / ?& j( Q. @* C7 |+ v+ R
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    + C0 k: [/ {0 ~$ o& r% v
14. *
    2 o9 ?* L6 S8 ~$ g6 l
15. * This program is free software; you can redistribute it and/or
    $ Z& v" |* H2 C; u9 a
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
    
20. * kind, whether express or implied; without even the implied warranty
    : m! m- H4 A8 V. f& M! B. [
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    , s" `. Y. M! O5 I& @- C4 P
24. 
    
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>
    8 P6 c4 n- Z  R; [
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    : v  P) `* D& P! {% _
33. #include <linux/mm.h>
    / e9 Q1 p/ f0 {9 M) `& v& v
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    3 a& \' ~5 I# {5 s
40. 
    ' w" [+ ]: x1 z4 f* w
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    5 o) k$ ?  K6 X7 r
44. #ifdef EDMA3_DEBUG
    0 c: J; x9 P& m  ^* Z
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    , K8 B# b* j' f% b: U) ~6 u
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    ( V3 m' G9 P; J2 p, `( W
49. #define DMA_PRINTK( x... )
    * L8 B# x1 D: m1 |0 M
50. #define DMA_FN_IN
    $ U5 @% Y, h/ K: T- J0 Z+ s5 X
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    / z; y9 F. y( U" |
59. #define ITCCHEN_SHIFT               23
    * _* Q$ V+ T* y) e) o7 G0 G+ {
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    1 }. l; n7 }2 t; v( y2 n
63. 
    ' a% _. j$ f5 W3 U
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);
    / R- B7 a6 e1 T1 m8 O! o
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    2 T' W: x9 Y/ _: i. o& {0 ~; b$ y$ K
69. dma_addr_t dmaphyssrc2 = 0;
    / [+ i- C1 x2 I3 _- m- A, C
70. dma_addr_t dmaphysdest1 = 0;
    + [2 V  J/ Z' o
71. dma_addr_t dmaphysdest2 = 0;
    8 l6 c- E+ f9 G
72. 
    
73. char *dmabufsrc1 = NULL;
    2 `& j8 l  ^1 p( X7 \& N  g
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    $ \; V$ Z: E: _4 ~, E
76. char *dmabufdest2 = NULL;
    
77. 
    7 \5 L& F/ S7 K. G% Y2 U0 A
78. static int acnt = 512;
    $ v1 G# K' l. C, |
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    9 q- N: Z' N$ `' W
81. 
    
82. module_param(acnt, int, S_IRUGO);
    % p1 N" x3 V% A3 g4 l
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

* t( p! _. ~3 v5 Y: u5 U. O+ T. _      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
& [% k* n2 j3 o; \2 E8 varm-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。
( |$ t0 {4 ^' Y- _

4 U, z/ J* r$ g! ]$ v- I