OMAPL138如何在Linux下使用EDMA3驱动

yyj

$ X" V# G- o& |  c' u. y

1. [code]EDMA sample test application
   # a- b) T8 n; g5 ]4 F1 Q7 V
2. /*
   . ~3 c0 Y& ]. r
3. * edma_test.c
   
4. *
   5 C' m9 M6 V, i, H
5. * brief  EDMA3 Test Application
   + [7 T; N/ V% K& v3 O/ c% W& p
6. *
   ' O5 ^6 z* E& g5 ]1 s. c2 G
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   " E% ^/ u# B) X
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    + T8 h0 u' I* V
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
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
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    1 I6 @5 q. |, d$ @
20. * kind, whether express or implied; without even the implied warranty
    - S, B: g4 o/ ^9 w6 t8 H
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    2 e( U, K% `9 s; q( s& F
22. * GNU General Public License for more details.
    % d8 p9 s' l/ ~8 e
23. */
    4 f; ~, f( Y. t  ]
24. 
    
25. #include <linux/module.h>
    9 U4 u$ d1 h3 G- j. a% f
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    , o; v- o6 G( ?; {, L
29. #include <linux/interrupt.h>
    - ?1 I8 ?% R$ j3 ?
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
      m0 v9 y( _1 O, T
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    + i: i9 g6 P9 g) y* c# F4 s1 a  u5 M
35. 
    ' Y- ]# P! l0 a$ ~7 V7 N2 S
36. #include <mach/memory.h>
    $ b$ g4 Q- e5 P, W7 q# s% c2 g
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    & K! j7 x/ O/ Q5 ~, J
41. #undef EDMA3_DEBUG
    & m4 I" c7 P4 E% O  c+ ~
42. /*#define EDMA3_DEBUG*/
    + Z- t+ u. o; q/ Q1 V
43. 
    # B! t  j/ `2 m5 `! v6 s
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ! e2 ?6 e$ d7 i' D  J; g
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    7 D4 R, T) R6 R  a! M
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    4 f% s' b- `8 f5 x2 _+ o8 v6 q
48. #else
    $ c6 s" h# Q5 H- p8 g. Y( A4 e
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    7 M7 Q& g( d+ [0 j, A/ [# I
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    2 ^2 u+ E2 m; T; p! B% z
55. #define STATIC_SHIFT                3
    7 K# {( W6 @! Z% A" J) \
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    + _1 [# H/ ^6 N! {
58. #define TCCHEN_SHIFT                22
    5 Y" a3 U* [/ B# ]/ k: ?
59. #define ITCCHEN_SHIFT               23
    ' [% W* M3 h0 P/ U1 u0 Q9 V2 J% m0 x
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    6 v7 M. [# A+ `6 ?/ R- Y/ Y* H; R
63. 
    - L) _' b  w6 Z  g  j0 ]$ Y
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);
    ' y8 C. _; b3 k( O. j
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    ( J0 u1 s9 y1 q6 G4 O/ y
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    / _3 ^3 \$ v& j' {  d% k
75. char *dmabufdest1 = NULL;
    % c9 @7 O. w: i- y1 g9 t& j
76. char *dmabufdest2 = NULL;
    ! B( g& Y7 E" p
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    % z+ P9 E9 G: u0 e, @& @6 t
80. static int ccnt = 8;
    
81. 
    ( p+ O) v$ U  t0 P. s  @" n' }1 I
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    " L. D- U; p2 E; q) M, P; `
84. module_param(ccnt, int, S_IRUGO);

复制代码

  Z2 A+ E" ^8 o" ^2 I: M  }
) O* r5 H" `' b5 A! Q; 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
/ J, J; X6 t0 N" z) f3 Jarm-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。
% G8 m+ G3 C5 s1 v  E