OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   % S0 B' W' ]; c( O
3. * edma_test.c
   
4. *
   ) U8 V8 P3 Y' S; }8 A
5. * brief  EDMA3 Test Application
   3 |5 p# W' ^8 X2 f* e& Q
6. *
   , |$ ]; L# M1 y2 U1 N4 `, E! S
7. *   This file contains EDMA3 Test code.
   & {4 j& p  U( t* ~
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
     c5 I. h: u5 l& Q: G- K! C
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    6 C/ w# {5 L: {
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    * }; K& |' h. J+ ~% _$ K
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    , r5 t( k* W3 u7 m  t
17. * published by the Free Software Foundation version 2.
    0 O; u" j4 A* ?& M
18. *
    - M4 p! `: F0 h# r1 p3 r0 I
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    & P" S* g" ]- F. W8 r9 {: Z5 P0 j
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    , e; z; l5 r( g* ?/ h: d
23. */
    + }) {% U; p$ h( }
24. 
    2 x/ s7 v& S9 O3 v9 H4 c1 x) a
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    6 v& x3 d, F% O0 j6 X6 q3 t6 N  j
28. #include <linux/types.h>
      H/ G( h/ k$ o9 R- z2 B) C
29. #include <linux/interrupt.h>
    # O$ \. S) a5 x& M% U7 w5 J
30. #include <asm/io.h>
      R2 c2 y4 p5 M' F
31. #include <linux/moduleparam.h>
    : f$ |+ w& Y' j3 [1 u7 Q
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    # V' u) ^( F4 r7 ?8 Y6 V2 I
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ' e$ R& b0 a1 ]& h1 Q( w
38. #include <mach/irqs.h>
    $ H1 A# S0 w* G: b$ L4 N
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    & y6 H' D4 T9 E- H) l
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    $ i, m" j! D+ V% F; x( y5 x
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    " K- t1 `+ k% u8 F, O6 Z, A
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    , z  ^5 G$ [* x4 B
48. #else
      ?# g/ ^2 O; y5 o6 q  J( v% T
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    ; J5 }/ a$ i% B* w- c% |* k+ H* |
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    3 }" X) z4 y$ }
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    + G+ M3 u6 B9 Y
55. #define STATIC_SHIFT                3
    / k# }) {' Z  s2 ^' b- p5 k' F
56. #define TCINTEN_SHIFT               20
    2 T1 s" \' g" b
57. #define ITCINTEN_SHIFT              21
    & r  E4 \7 s" d5 ]( e
58. #define TCCHEN_SHIFT                22
    & C( W( g, a0 ^  @
59. #define ITCCHEN_SHIFT               23
    " t1 y, v. N0 n; p
60. 
    
61. static volatile int irqraised1 = 0;
    5 j" ]! _7 R0 Y- P. ?
62. static volatile int irqraised2 = 0;
    
63. 
    
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);
    8 `) O% i! T7 b3 \+ @
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    , B  n5 S% v8 @! a
68. dma_addr_t dmaphyssrc1 = 0;
    ; _3 v- W8 j0 L  q6 R5 z+ Z% r, C1 c
69. dma_addr_t dmaphyssrc2 = 0;
    . C' U' y: @( _/ D3 ^) a: j
70. dma_addr_t dmaphysdest1 = 0;
    & y- E  D) k9 l4 r4 R
71. dma_addr_t dmaphysdest2 = 0;
    3 |6 S/ {& s3 J5 x+ I9 j% d" r
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    # O9 n- i& a/ Q) j: F7 r, [
76. char *dmabufdest2 = NULL;
      D# s( J, ^9 P# k
77. 
    / w* [6 Q/ R3 d4 a8 i! Z  G. F
78. static int acnt = 512;
    
79. static int bcnt = 8;
    * ]8 j: v: N" S# M+ @' G7 u. N
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    . V6 g" _$ R6 N1 k9 p! d
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

) z2 [: G2 I: X) Q4 Z/ S1 N
      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。
6 ]- ^* m" 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。

- t7 b3 g0 I8 E( N" V$ d9 a