OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   2 t$ I& C- F/ y3 O2 [7 o: S) w6 S
4. *
   4 K  ~: D! r! g% |
5. * brief  EDMA3 Test Application
   4 i, a) F7 f: O. A
6. *
   3 f, m+ D- i  Z/ t; v7 _$ @3 t2 A
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   2 P) S$ v- K0 s0 h+ _
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    , f. ~& s+ C2 G
11. *         TO CHANGE.
    - w0 c$ |$ x: z; e0 K  k" c# K6 H
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    & [' N3 Q, b/ |$ ?7 Z5 Y
15. * This program is free software; you can redistribute it and/or
    . _8 n# w/ F' T7 f0 Q' ?  ?& r
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    ; o% p& @& M! o
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    1 _9 }- H- T) R& m: N
20. * kind, whether express or implied; without even the implied warranty
    & [( p( s( k! D& v) }2 a* Y
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      {. L/ W6 P, V
22. * GNU General Public License for more details.
    
23. */
    ! w+ r6 ^" E1 _+ Y' l; R1 z( L/ l6 T
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
      c7 F/ ], Z; i. d
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    9 o7 g; N; R: J) B) v: {( }( M9 j
30. #include <asm/io.h>
    % t: f% @/ i  Q! E2 A
31. #include <linux/moduleparam.h>
    2 K2 w; p) J9 E* v
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    - s% n7 [/ u. z+ S! f! Y2 S8 a
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    7 c# c0 G! O1 s& j
38. #include <mach/irqs.h>
    ) v" J0 }9 M! M2 U" P
39. #include <asm/hardware/edma.h>
    / ^  E0 z, S4 T+ e2 A9 d- k
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)
    6 {7 Q' O1 D% p# Z! s
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ; C- f3 t& k, c! c. v  x+ ]- J; Z
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    ( q3 b# R+ u0 w  E1 j3 F5 Y: W! I. c
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    ; T. u6 Z* T5 {5 u, o
53. 
    8 O: r2 }0 C& v! s. \/ e; V
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ( T) J, d" D+ v* q; j  P. _
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
      R& r+ t% P8 Q+ `( c) ?0 r% D
60. 
    7 v8 l7 m1 K. `9 d  s3 p
61. static volatile int irqraised1 = 0;
    * ^! V$ F5 V! k$ f5 u/ E
62. static volatile int irqraised2 = 0;
    3 ^4 y# U; {' T
63. 
    ) v$ {& {3 q& R
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ; b: H; A" Q4 q
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 \* z# S% T: Z, p
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    % u' y3 I/ T0 E4 Z2 C
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ) w  }* ~3 B% t/ b
72. 
    9 o3 ?. P/ l+ ]; r. H) z
73. char *dmabufsrc1 = NULL;
    1 ~0 q6 x4 y8 W7 x) r
74. char *dmabufsrc2 = NULL;
    5 i) I' R. b, B2 a3 c) S5 {7 @
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ' x4 |# G4 ?% A7 H* D6 g7 m4 l7 n
77. 
    
78. static int acnt = 512;
    % S# |  u9 C) K8 p% w' ~, `% ~/ |# S
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    $ U( E+ J, Z; J- E
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    - X" H, g: `! w
84. module_param(ccnt, int, S_IRUGO);

复制代码

/ ^) W7 \3 w* H1 O9 f( p      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
* A  }9 n: e; e- {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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

) M2 t/ ?  [1 D$ G