OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ( C# l6 }* [; t; |* W
2. /*
   
3. * edma_test.c
   : X% C7 ^2 b' G0 P6 D0 ~8 o
4. *
   9 z! Y$ g0 ~( l; V( a+ Y4 O
5. * brief  EDMA3 Test Application
   
6. *
   / T' w0 g( h. i! O& C% r- k
7. *   This file contains EDMA3 Test code.
   + ^" [% z" C4 q0 I8 s, r3 M1 _
8. *
   7 ]3 t; I) n6 E$ I4 U8 N
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ! ^, i0 d! T9 O
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    , R6 \' A! o+ Z) Q% b. ~
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    % U# {8 C" N' l  u
14. *
    
15. * This program is free software; you can redistribute it and/or
    : L  J- G5 r4 i1 T+ K
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    & i" @) m/ F8 ^( x
18. *
    ' F& h! s/ H5 Q' @1 e: ?$ c0 _5 ~
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    + ]8 s- ~4 g6 X. Z4 ]' w) c
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    6 w; F, ]6 B4 c3 L3 o
23. */
    
24. 
    
25. #include <linux/module.h>
    3 k- Q# R! B0 I% g( e8 D  V- u, d
26. #include <linux/init.h>
    ( d" n( K- f1 T: ~
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    3 }6 ~. ]. m  B& B, b$ T( ~: Q
29. #include <linux/interrupt.h>
    / }6 j0 F& _4 |! ?4 B7 S0 a
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    & W- ?  P5 D( ]1 C- {* W
33. #include <linux/mm.h>
    $ W/ p6 V4 A3 v; z: G
34. #include <linux/dma-mapping.h>
    # r0 ^* f0 }- p+ b9 }
35. 
    * [" y: x$ a! m$ S! N, f% N2 u
36. #include <mach/memory.h>
    % Q( M! ]! u( g
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    # h+ ^; h3 ]7 G
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    4 p, X7 L( X/ T
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    * |+ |2 y$ v& g1 q# S: n
48. #else
    
49. #define DMA_PRINTK( x... )
    . e, o* y, E) m3 Y8 O8 y
50. #define DMA_FN_IN
    , E$ N8 x0 `9 Z
51. #define DMA_FN_OUT
    : c) U& i; {/ o8 U% k7 g% e
52. #endif
    
53. 
    " h9 y" E4 _* a) F. ~- Z7 ]2 y
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    , M0 O6 p& @3 U7 a, B7 `
57. #define ITCINTEN_SHIFT              21
    ! m$ {& H+ o) g4 l8 w" h  X+ ]
58. #define TCCHEN_SHIFT                22
    9 z6 A/ [0 c: q6 K
59. #define ITCCHEN_SHIFT               23
    7 F+ N8 w' |# L; m: d
60. 
    
61. static volatile int irqraised1 = 0;
    8 O1 y4 ]/ V; ]7 r
62. static volatile int irqraised2 = 0;
    
63. 
    + ]. ]0 K7 R9 y
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    * t3 v( I1 p/ k' Q% X7 ^$ y
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);
    
67. 
    7 h% V, ~% _% `
68. dma_addr_t dmaphyssrc1 = 0;
    " U. `8 H% s- k
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ) K  t; h0 h: W4 W' @; R
72. 
    2 A& H) Y( v+ H
73. char *dmabufsrc1 = NULL;
    ) M3 A$ r& S( A
74. char *dmabufsrc2 = NULL;
    2 B2 l* O. Z3 _" F- B
75. char *dmabufdest1 = NULL;
    ) h, p8 e% {' h( ~/ c& B5 t
76. char *dmabufdest2 = NULL;
      \) q; _' R0 G  A
77. 
    6 q4 d, F  p" a3 r# ]7 m% Z/ ~
78. static int acnt = 512;
    0 E6 f: z4 S. h
79. static int bcnt = 8;
    ! H" v, h  ?9 u9 E
80. static int ccnt = 8;
    1 p& T* `; M+ l( u4 {
81. 
    ! s) m) }) [& y6 q0 g1 L7 M+ Y$ H, h
82. module_param(acnt, int, S_IRUGO);
    / W# J& ~7 B# A2 _/ C
83. module_param(bcnt, int, S_IRUGO);
    & x6 j: b9 s* [: T  e) B
84. module_param(ccnt, int, S_IRUGO);

复制代码

1 q% E- ?" _+ J1 E
& p) [2 B1 S2 w; I4 D) _  v      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。
& Z, W/ F4 u7 c% J1 M     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。


4 H% y  C3 M& ^1 \1 g( w  D