OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   6 y4 n6 T- f" S* `7 w
2. /*
   3 l, Q: w# H6 Z" W5 g4 N( ?
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   6 \$ \8 Q" Z, ~3 S2 _
6. *
   
7. *   This file contains EDMA3 Test code.
   5 o- M7 ]" p" _( J; w% E5 i$ c1 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
    ! u9 u. H& V, ?
11. *         TO CHANGE.
    - K" ~! O9 V4 S/ M- ~/ c. _
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    6 e: ^: d6 N' L/ s
14. *
    
15. * This program is free software; you can redistribute it and/or
    0 M7 y4 _5 `# b
16. * modify it under the terms of the GNU General Public License as
    & s+ A# J* z$ B  R. R
17. * published by the Free Software Foundation version 2.
    9 x- e* v1 ?+ G$ L0 S& @+ C
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
    
22. * GNU General Public License for more details.
    1 u- U$ K" P" \# |
23. */
    
24. 
    
25. #include <linux/module.h>
    + C1 o) f  g' K0 Z% g. e( q/ X6 q4 H
26. #include <linux/init.h>
    7 y" Z. E0 J) y8 P7 A! M
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    - K- S  a& |: u
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    % ~; ?3 ^4 o5 V  v3 }( e1 C
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    1 }* v- }% O/ B2 U5 F8 o
34. #include <linux/dma-mapping.h>
    2 y" N" }+ f' l* X6 p$ a. b& ^
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    ! l# Y% _7 M. A( Z7 T6 @8 }
38. #include <mach/irqs.h>
    6 i4 d! \1 l: B6 F
39. #include <asm/hardware/edma.h>
    + f3 l" A2 x) O+ H: U- M. x$ m( U+ e
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    . _" e! g' l0 j% j) |
43. 
    $ F2 c, \3 ?: z. u5 j
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__)
    ! a5 q8 M2 y/ I! r
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    . A! c4 l, B5 E& E+ U# l" ~* e
48. #else
    
49. #define DMA_PRINTK( x... )
    . X( l( z& X6 o! j' W
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    4 {" N/ S) `7 O* z. V8 `5 L, G# \
55. #define STATIC_SHIFT                3
    9 V; a# G3 P( y! _! r6 \& @, ^
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    , }! {& ]0 N/ }6 e9 R0 i# e6 R- m
58. #define TCCHEN_SHIFT                22
    5 w- N+ W% V1 l% M
59. #define ITCCHEN_SHIFT               23
    / J9 p, i0 @* c9 j# k3 u
60. 
    7 n0 Q9 D! M0 `% Z
61. static volatile int irqraised1 = 0;
    , X8 {, q! D0 l# {' c; N
62. static volatile int irqraised2 = 0;
    
63. 
    7 R( N4 X% X+ d0 h
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);
    ! m+ `( y( `9 D8 ?( @8 W
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    . Q& ~" M8 x8 k; X
69. dma_addr_t dmaphyssrc2 = 0;
    6 D  Y4 Y# X9 g$ j( z
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    ' T/ d! i, V% A: m+ [# @
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    ; g, s" e& f6 Q- R4 X( e) \
78. static int acnt = 512;
    0 y  T$ |  m  X1 e3 h
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    ' O2 O$ n- L* K
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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
" v2 R  O6 H/ k! F! Y6 m- K) ?  zarm-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。
, V% D) `% U2 Y4 h5 x9 `/ q5 M" @4 L     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
8 K# Z: B. X" Z! i3 u/ ?1 b. X