OMAPL138如何在Linux下使用EDMA3驱动

yyj

( {3 j3 x* }# s3 G; c& x- @  L0 N

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   2 }) H* Y  |4 ~+ w1 Q+ E2 t* u
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   + ~5 P3 ~% e1 ^& ]9 v/ u
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
    9 b) {- f8 x3 f* O  O$ b
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ) f- ?. x0 e+ T( _" l1 f. Z
14. *
    0 a: x# G5 K% Y) J8 l9 W5 o- x
15. * This program is free software; you can redistribute it and/or
    $ |* x4 ^- `9 f, o
16. * modify it under the terms of the GNU General Public License as
    9 {- b" O% M: X; [- h( p8 O- j" w6 K
17. * published by the Free Software Foundation version 2.
    : f# {$ {- i+ l
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    ' }: U& `$ j. T6 {7 b7 W$ h5 f
23. */
    
24. 
    $ Z5 d9 `* \: m( t8 c9 x
25. #include <linux/module.h>
    3 E& T# g: O2 L( [; w+ x/ G
26. #include <linux/init.h>
    & y5 L3 @4 h; B1 v7 v0 P! L
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    % q2 Z0 d. D: ]3 v  S: W( u
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    , `: x2 O. Y% n% ?6 T
33. #include <linux/mm.h>
    7 z0 w. h4 _2 `: ~1 N4 w
34. #include <linux/dma-mapping.h>
    - h  z8 P" w7 t" B4 T/ W2 H
35. 
    
36. #include <mach/memory.h>
    5 h+ c, K4 ~. W8 x; Y
37. #include <mach/hardware.h>
    / t( a4 c4 ]& W- G# Z
38. #include <mach/irqs.h>
    . E# i9 z' K) a. d. L5 A; c
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    - c! g2 ?# Q- Y5 M9 b" V5 N) e
42. /*#define EDMA3_DEBUG*/
    , F5 g# d( K! e5 Z0 w% f1 N/ y: P
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__)
    6 A) O6 L" Y7 W' F/ p5 y
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    3 z+ ~! I0 Y5 u5 u3 ]
48. #else
      |; J3 e6 |& H$ \6 [1 ?7 G
49. #define DMA_PRINTK( x... )
    : l- E0 U0 n! M2 {. c0 X' J; w; d9 A
50. #define DMA_FN_IN
    + `% a! U0 E7 V  `  q
51. #define DMA_FN_OUT
    1 K- B* V) l0 o% X' H) P0 L7 r3 G
52. #endif
    + ~( r9 W7 s2 t5 s0 {) _' f
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    . B- `& p, n0 |4 D6 R, u
55. #define STATIC_SHIFT                3
    $ @& [5 o- X" R. M! x8 c
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    2 u3 u/ d) a6 E2 D# B' |2 W. M9 `0 Y* b
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    % O/ k+ k! T  G2 B3 U1 ^; a1 v
61. static volatile int irqraised1 = 0;
    ) A4 n! [. a0 `) v8 V
62. static volatile int irqraised2 = 0;
    1 e: B% |0 x6 T+ h/ K9 c
63. 
    " H6 ?1 G9 ]; _2 _
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    / a- a( x3 w$ M$ k+ X' B
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : B9 Q- M& Y, Z+ J9 D
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    # m9 C! d! V8 k, l9 ]/ q
68. dma_addr_t dmaphyssrc1 = 0;
    5 B/ E4 {7 ?  x( e0 o7 I
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    * K" {7 h+ S7 @( \
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    7 t9 m) c1 K" M" x* u
74. char *dmabufsrc2 = NULL;
    . p0 h- U8 f5 t1 y9 w
75. char *dmabufdest1 = NULL;
    5 z' P/ q9 [  Y$ D& w
76. char *dmabufdest2 = NULL;
    5 u0 k7 g' t  P- ]
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    % h$ J5 d# t) M5 o- V9 L5 l
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ; _& Z. V8 v- b( D( U# n
83. module_param(bcnt, int, S_IRUGO);
    , j! d9 L) U& b6 X2 P5 u, h  v
84. module_param(ccnt, int, S_IRUGO);

复制代码

/ y! I5 |" U/ L: `2 P& j# F
$ d* q: K6 x3 z; 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
) Y# e6 ^) L$ Aarm-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。
4 H% \8 H: v5 _& u' f" J# P% d     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。