OMAPL138如何在Linux下使用EDMA3驱动

yyj

* L- Z0 }' u# R. Y# g

1. [code]EDMA sample test application
   + {. Z8 ^1 D: ~7 |
2. /*
   
3. * edma_test.c
   0 e3 k4 ~/ V1 T
4. *
   ' U: v) p' X# [& {) {: ^
5. * brief  EDMA3 Test Application
   ) J- k( x+ x3 E0 O0 b
6. *
   ) b' P1 P! s3 o2 J( r7 P2 G* L+ q
7. *   This file contains EDMA3 Test code.
   
8. *
     d3 m8 \3 F2 h
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
    2 T# `1 U; P8 U7 P2 Q
11. *         TO CHANGE.
    
12. *
      s* V- u' S% J
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    2 g+ p% G% c$ B. T- k
14. *
    + R) @; A3 F, i- B
15. * This program is free software; you can redistribute it and/or
    $ H0 c2 G' J: w6 p7 w$ [8 X1 W- |
16. * modify it under the terms of the GNU General Public License as
    ! L3 k1 \; K- J3 B
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
    # t: X$ ^$ A6 N0 y3 c1 F( I
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    4 X5 `" {/ n+ ^$ Q" V4 O8 B% {* V
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    ! _: C$ H8 D5 F% [9 q: W" n
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    $ _& F* t: I7 K" {/ \4 Y0 \
31. #include <linux/moduleparam.h>
    % `# @; s7 L* c  ^
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    : s! ^2 S+ u( [+ j, k1 D+ O
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>
    
40. 
    
41. #undef EDMA3_DEBUG
    : f& q& w% S& J
42. /*#define EDMA3_DEBUG*/
    ) ]3 i) M$ j6 s$ C' \' }, c  ^
43. 
    
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__)
    / a6 p* \! I  t
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    + T, F4 k. P- t, ^5 h
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    8 q+ O  Q) Z. X
51. #define DMA_FN_OUT
    # c" T4 `& O. r: I/ T
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ; _# c; f3 D1 @' B2 U7 ^% D7 q, T
55. #define STATIC_SHIFT                3
    0 x8 `3 B: f; }  ~/ m
56. #define TCINTEN_SHIFT               20
    ' k7 ^: G3 o4 G* e4 l$ E) L
57. #define ITCINTEN_SHIFT              21
    . |, T5 C; X8 K7 |$ D* G
58. #define TCCHEN_SHIFT                22
      r0 [6 p1 [% E8 q
59. #define ITCCHEN_SHIFT               23
    ; u: x4 A' V) J+ @  h! U
60. 
    9 V7 I( Z( X# B9 l5 Y
61. static volatile int irqraised1 = 0;
    3 E3 h, s- T' I
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    0 v: D0 }4 [# y% Q+ d1 ^1 d9 c: a  K$ S
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);
    6 y+ P/ Z! M. H
67. 
    7 c$ |( k0 I, o8 \6 C9 F; {4 }  e$ L
68. dma_addr_t dmaphyssrc1 = 0;
    ) W) ?! m# O# c, Q/ z: H3 H
69. dma_addr_t dmaphyssrc2 = 0;
    ) ~. i. f2 ~+ F, ?3 s( p/ }) U
70. dma_addr_t dmaphysdest1 = 0;
    / ]  e' {" h! }( j" j# l
71. dma_addr_t dmaphysdest2 = 0;
    ! Y+ ^% r9 N6 L. i7 T1 D  y4 C, q
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ! q; C, Q4 d5 Z* v5 r+ o
77. 
    
78. static int acnt = 512;
    9 B6 b1 N% U: J$ ~5 W5 H0 H  W3 z' G
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

' X8 ~- m1 d' C2 X, K0 q: M
% m. n* E, q: S+ k5 E      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
3 W; `1 p9 F. Z  g! e4 q$ ~: s4 k1 Karm-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。
$ F$ l8 \' b" e& o     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

2 _# x) e! d" s6 U- M" h
( {! ]( r: H; F1 l- m# o