OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   + l4 ?* Y; V: X$ l
6. *
   
7. *   This file contains EDMA3 Test code.
   $ X0 [" p, ^+ Z
8. *
   0 [8 W# n; _' b2 i+ `: g( ~
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.
    - w; K- J8 g7 S" C3 O
12. *
    # N6 y$ N3 |: I& k* M% d& F
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ( W) h  X) j/ w( p" `/ z9 |! }
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
    3 O7 L( m& t! ]1 g7 R( r- `* K
17. * published by the Free Software Foundation version 2.
    ; D8 c! ]5 b# B  w  u
18. *
    ; H* L2 D% Q1 n! q) ^, k
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    3 [9 h+ `3 x( h2 S' A
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.
    
23. */
    & L- x+ y  E5 r- q
24. 
    & d( @9 e6 E. |
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    - B  u. P5 ]- B; c6 N, a; H  ^
27. #include <linux/errno.h>
    9 a% C  ]; i5 f7 o, c- ?' A
28. #include <linux/types.h>
    $ |# P* J3 }/ I3 x5 A1 A  M1 x
29. #include <linux/interrupt.h>
    0 C# g5 T  i9 M/ g2 r$ Y# a
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ) u: Z' G0 U- O
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    . W, N2 q+ @. C
37. #include <mach/hardware.h>
    3 a. Y: e. R3 k2 v
38. #include <mach/irqs.h>
    1 n& _* ]6 p5 Z) c% p! V! h
39. #include <asm/hardware/edma.h>
    
40. 
    : r% H3 H$ w& G( l& [
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    # q9 e& Q' h7 J- [: G* a0 |4 L
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    3 m( r2 H- l4 k
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
      N+ n) n$ E! Z  N  V- E8 P$ j
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ' z6 c4 Y1 A: t3 V8 }! f. T
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    4 d' G; ^8 X8 o2 _, |
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    - g  Z# F' r, }8 v/ u
60. 
    2 V4 ?1 S! G- M: K1 ~! V, b) u
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    * g. U+ F/ x5 L, B
63. 
    6 ]" v4 Y4 x" E  a
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);
    - e( D/ z% b7 {7 ]" [
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    7 n# F2 l0 r. b9 q; @. \: x2 n
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    # c6 x5 a' ~  `* e; m( L- _, @  j7 z
70. dma_addr_t dmaphysdest1 = 0;
    / r# A8 ]8 ~- _! w1 r. M. @4 \
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    ! v5 [( ]! f. V% C5 V3 d: _1 \
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    5 L9 `: K; x) a. T* w
75. char *dmabufdest1 = NULL;
    7 A: G. [; ?" x- s, j$ x* {1 k
76. char *dmabufdest2 = NULL;
    ' x# T5 y9 t  V1 z8 V+ |( _
77. 
    
78. static int acnt = 512;
    ( M8 n6 \/ z9 c
79. static int bcnt = 8;
    9 Q7 _% M/ f' u0 [/ G! Y" P; q5 F
80. static int ccnt = 8;
    
81. 
    * ^  h' r5 I* b2 o1 x
82. module_param(acnt, int, S_IRUGO);
    3 |( I2 }( \8 r: I" F
83. module_param(bcnt, int, S_IRUGO);
    2 W- j5 m' _: p& `
84. module_param(ccnt, int, S_IRUGO);

复制代码

2 P8 [7 V9 B+ H' e
      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
5 D# j: @8 P0 I3 \+ l6 ~! {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 O' Q# U( d  @$ p6 E+ O     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
! z6 H7 ]1 D1 ~+ \

* t' y4 S9 }& q' `9 @