OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   6 C, |) R- x' R' u9 Z: R5 E
3. * edma_test.c
   / G9 ]1 U5 i* x" ?
4. *
   
5. * brief  EDMA3 Test Application
   0 y" i! J6 b" R- h7 A
6. *
   
7. *   This file contains EDMA3 Test code.
   : o5 L) g/ @0 c! A/ G$ h9 w
8. *
   
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
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    2 B0 L$ y3 B) T. c
15. * This program is free software; you can redistribute it and/or
    1 V0 c# D3 z) z% i0 D
16. * modify it under the terms of the GNU General Public License as
    0 W5 t- A* a$ H6 r- X
17. * published by the Free Software Foundation version 2.
    ! |% R9 I4 M, ]1 W
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ( J$ Z, q9 b/ @! y
20. * kind, whether express or implied; without even the implied warranty
    + [2 s2 @+ k+ d5 i. G" k: w: U' `
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    7 w$ d: R9 a0 O0 H. i( E& }
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    6 w0 C6 D+ ]1 v8 T* p( G
28. #include <linux/types.h>
    1 m, D+ x; q; s: r6 B2 _$ _
29. #include <linux/interrupt.h>
      w2 ~, U: j& z9 A+ p
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    & R+ H7 p& N9 x9 x& \/ _+ W6 e7 M
32. #include <linux/sysctl.h>
    : P1 r7 A3 S) S1 j7 S' _
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    / k6 e% R7 r1 M! F
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    * l3 k9 H- a% k5 g
38. #include <mach/irqs.h>
    . c2 Q5 y! g; ]( R" }; H0 @4 z
39. #include <asm/hardware/edma.h>
    " Z7 ?  ]2 N, K' I* o
40. 
    
41. #undef EDMA3_DEBUG
    : Q, X" d8 r" i% Y3 D. _6 y
42. /*#define EDMA3_DEBUG*/
    
43. 
    - J7 j! {* l" J7 t
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__)
    1 R8 {( E; H9 j& [0 j
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    6 H8 G) V7 o% y
48. #else
    
49. #define DMA_PRINTK( x... )
    0 R1 p6 T  I8 y# c$ W5 M, p$ Z
50. #define DMA_FN_IN
    - f  l0 s; F6 R. n
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    ( o" I# Y: t3 {1 N( @' |/ F+ t
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    % N& Q) v& k) I$ O: Y0 P% p' a3 c
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    6 c3 F3 f" `( [; }# N  l9 f1 x6 e/ ]7 @
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    3 a6 j& c; F  ?# c2 y1 {. x
59. #define ITCCHEN_SHIFT               23
    / o; V( S8 B4 R/ ^
60. 
    0 Y6 C7 D9 T: k6 H' p
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    , z: |, v5 m& k  C+ K5 W; G0 Q# ^
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);
    
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    / @9 i% @) f, ]- g4 p' P
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    % y! O4 \8 Q2 N* |* ]; Q+ u
70. dma_addr_t dmaphysdest1 = 0;
    ( i* i. k# \( K9 J  H
71. dma_addr_t dmaphysdest2 = 0;
    / p5 o5 A( s9 |: U: V
72. 
    . v/ u# c* S  A, s/ r
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    4 ^4 |/ F; V# X) e/ T9 Y
77. 
    
78. static int acnt = 512;
    ( b1 u# F  h5 R3 s, L7 d4 _
79. static int bcnt = 8;
    ' o8 {- p# o* B  \; d$ ~
80. static int ccnt = 8;
    $ j  L8 I) h5 I% e' b% P, E
81. 
    , Z) J, s  \0 Y
82. module_param(acnt, int, S_IRUGO);
    ) A, I6 u# g9 [- b8 m( U
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

: ]: p& L- d% z% q      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。
: }2 @; V, U) s! c, J7 H/ i     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。


; R0 u6 E( C8 f) s) f! j+ ]