OMAPL138如何在Linux下使用EDMA3驱动

yyj

0 E) n6 S+ y  H# K

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   / ^* h& l* ~1 P1 f. @
4. *
   ) n- L1 f6 Z4 f6 C1 A/ y5 s
5. * brief  EDMA3 Test Application
   
6. *
   8 C' {9 a7 g" ?; U
7. *   This file contains EDMA3 Test code.
   
8. *
   " e" }/ ]: n7 H" H- c- C
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   2 f( h$ s1 {0 |5 `% z
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ' u% c. Q3 |, a8 ?
14. *
    $ R9 }; f* _9 Z: x& M
15. * This program is free software; you can redistribute it and/or
    ! H  i9 a& s1 i4 Z' q$ b4 U) o+ H3 m
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    + w$ {7 v5 n; p  P6 \
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
    / G7 |$ x) Y! a3 M' \) q: v/ g
22. * GNU General Public License for more details.
      e8 |5 S) W3 [: L
23. */
    
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>
    / t  m& {* T( c/ m7 t& M
31. #include <linux/moduleparam.h>
    , e0 m$ f! H5 N6 ]
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    ! h. e1 O; ~0 q, h
34. #include <linux/dma-mapping.h>
    # G5 B3 N' o% Y! Z3 J
35. 
    
36. #include <mach/memory.h>
      _  `8 P( d% i4 `5 j9 [
37. #include <mach/hardware.h>
    ! j2 U1 C9 F$ m
38. #include <mach/irqs.h>
    ) a, d4 E" [- d) G& K1 d+ h- \
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    3 a5 @1 _$ `8 ?( G+ e) a$ s
42. /*#define EDMA3_DEBUG*/
    # J2 S0 V8 @- Q
43. 
    ( B' T5 l9 Y! n1 L' W- o8 P3 B, B! H6 L
44. #ifdef EDMA3_DEBUG
    - @+ F8 B; ?) ?" b4 _# U3 y& `
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ) `6 b$ f" l' p
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    % ?. k; b8 T: K: j4 J
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    9 Z. P$ v1 `7 A9 _: h
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    ) a9 {! w1 m6 A0 |6 G2 z) l
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    8 I8 ~* o4 L) W: V
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    6 c8 W) U0 j6 H5 b* J
60. 
    
61. static volatile int irqraised1 = 0;
    6 i' S$ A6 \6 ?/ p, R9 D' y
62. static volatile int irqraised2 = 0;
    6 p3 ?' b$ R3 }
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    / @0 D9 w8 K0 ?; H4 b% F
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    0 P2 D# p: v- A
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    6 W; x3 C5 A, ?. c2 p
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    / z, V# V3 {$ R- ?' c1 K! s+ r5 D
70. dma_addr_t dmaphysdest1 = 0;
    + f6 s6 S* M5 j5 p
71. dma_addr_t dmaphysdest2 = 0;
    6 `) i- ^7 ]+ b  |6 p
72. 
    7 a' B/ K6 ^4 H/ u
73. char *dmabufsrc1 = NULL;
    6 a: ]+ h$ V$ W  o0 _% ?( p* Q
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    " y% Y" {: {6 Q5 i# u9 A
78. static int acnt = 512;
    
79. static int bcnt = 8;
    . x: C, n) y1 |! B
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    $ I9 L5 S0 f4 W% J" _% B1 h
84. module_param(ccnt, int, S_IRUGO);

复制代码

2 H: T1 m* X3 T
- \! Z- Q0 |! b) u3 w& s: H      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
0 j5 V+ a) T# f: d) b' Xarm-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。

" E, M2 C- S/ C1 j; |( L
+ S7 g$ y# R4 w5 }& `