OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   + S* f9 E" g& ?+ L
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
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
    6 N* g  O- D7 N9 ^+ y
11. *         TO CHANGE.
    
12. *
    5 O1 B9 S8 |. ]
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    # j0 Z0 y6 D* }
16. * modify it under the terms of the GNU General Public License as
    % _4 \' S* I" }# F7 T& l) d
17. * published by the Free Software Foundation version 2.
    
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
    . K) [) U, a; {/ A: z7 M  p% Q
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    0 U, B# S5 S; Q& \$ G4 ?
26. #include <linux/init.h>
    2 F) {' |* O4 \' c0 n
27. #include <linux/errno.h>
    - I4 V  n) w! k6 |; q
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    6 U" W( l1 n2 m1 ~7 `
30. #include <asm/io.h>
    6 t7 w, w0 m' \) q- o
31. #include <linux/moduleparam.h>
    * A' [; K! B6 e& a8 [/ B7 A/ |
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    + R* p; c* X$ Y
34. #include <linux/dma-mapping.h>
    
35. 
    / |& \& l. U( p" U7 P9 u* V# R: U3 R
36. #include <mach/memory.h>
    9 ^4 \4 M% |- n3 m. H! i; c
37. #include <mach/hardware.h>
    ; k0 X& H0 Y) X& u  x; X) t
38. #include <mach/irqs.h>
    7 Q+ i; Z: J3 [+ Q# l
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    - I& y! i# M) ^$ R; l1 N8 O
42. /*#define EDMA3_DEBUG*/
    
43. 
    & ~% }% h$ C" v% S% s1 p8 ~4 t
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    ) {9 ?) P& Y( M8 V+ Y5 d9 i$ q
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    , L% u! @, }/ [' ~
48. #else
    9 S+ x8 t) s7 `4 Z$ r0 O2 ?
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    4 h1 ^, M. k% j
51. #define DMA_FN_OUT
    % K( c' f( v; {6 P  j
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    # y" U# @& F4 X/ r) w- N: a
56. #define TCINTEN_SHIFT               20
    7 h( Y: k& b, P+ E9 H! {
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ' K) t; G( F5 w9 j4 s* R
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    6 k, i( k6 M: \  E& _
63. 
    
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);
    # F( O6 u. y8 W
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    : n6 I1 c+ n& z8 ]
68. dma_addr_t dmaphyssrc1 = 0;
    ; v! \6 }& {; K0 t
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    3 L8 `% |* h% `7 N( U& X
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    " M  c: w- t" [0 h+ W2 W
73. char *dmabufsrc1 = NULL;
    6 o1 p5 a* a) U( s' J" d2 t+ _
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    , U8 q. z( c) z
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    : U8 v0 F; M  i! g" k9 r
82. module_param(acnt, int, S_IRUGO);
    6 n7 ?+ \' a8 j5 j
83. module_param(bcnt, int, S_IRUGO);
    0 B4 H  d3 u8 ?
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
  i6 h# p4 ~1 v$ z. g) J6 J' H, Karm-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。
0 J0 @. \/ n3 \- e9 r9 {6 f
  I3 m5 j8 j' w1 k