OMAPL138如何在Linux下使用EDMA3驱动

yyj

7 I+ P5 J) v! m, h1 @

1. [code]EDMA sample test application
   
2. /*
   1 f% h# q0 l7 r! j2 r" p
3. * edma_test.c
   - I* F& p! z8 X
4. *
   
5. * brief  EDMA3 Test Application
   ) L) a, a- |& r2 G0 J( P
6. *
   
7. *   This file contains EDMA3 Test code.
   7 l( H5 ~7 b6 v9 z
8. *
   * m$ B" |: I. o6 C
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.
      G' M% {  |8 G, r: k. l" Z! c
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    - b" ~  x& r# ~  O1 P  t
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.
    4 [. s4 r( }( e$ g1 a
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ; E: v9 I. ?: L* i) ?' [0 B
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    * T/ k9 i# B$ ~( u/ N  j& S3 Y
23. */
    $ w5 m* G* h* G  N
24. 
    * i* _2 K6 m. a$ R+ S- J1 ^4 b- z" e
25. #include <linux/module.h>
    ; i" {1 K' ?, a4 D& ~  C
26. #include <linux/init.h>
    * K  h. ~( Q- N8 Q- D0 Q9 s% y
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    - ^2 `* O. N, M5 y! A+ }
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    2 h! r( [( K! N9 }
34. #include <linux/dma-mapping.h>
    3 J5 X5 d; E4 h
35. 
    8 |3 ^% O/ y; s; ]3 w! e  v
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    . S% n$ V& J0 L8 t+ q2 b" i
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    ; U* k: @2 x. C; x: _
42. /*#define EDMA3_DEBUG*/
    ( _+ M# a* r7 ~( \+ e' l
43. 
    
44. #ifdef EDMA3_DEBUG
    , V* C1 @* _2 z+ t5 J7 |2 l0 D9 h
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    : [; t* i5 i; M4 @
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    5 F. h* R1 j% C' [" C
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    4 r- {. K: c/ W# B/ Z. W6 U/ b
52. #endif
    $ r1 g9 [( i8 ]& Y; h
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    4 S6 V8 i7 `! r, ~, j* H# S
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ' X, K) c& q/ m" x9 {9 C6 J4 K+ p7 Y
60. 
    9 R, `/ k8 t4 q* F0 c
61. static volatile int irqraised1 = 0;
    8 d* |; B' K! x; L% f
62. static volatile int irqraised2 = 0;
    
63. 
    ! q" k. w9 _2 D1 ]9 K
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);
    5 f+ S: Q0 p; O( v0 {
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;
    
69. dma_addr_t dmaphyssrc2 = 0;
    ) F! ^/ z' I8 A
70. dma_addr_t dmaphysdest1 = 0;
    6 {. H+ v& q( {' n2 m# O
71. dma_addr_t dmaphysdest2 = 0;
    2 R7 ?- Q7 {8 W6 n- G% q
72. 
    2 c4 X2 q6 [- `
73. char *dmabufsrc1 = NULL;
    , g& s# t# r, a# [$ m
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    . ?  |7 K& i1 A3 }# t
76. char *dmabufdest2 = NULL;
    
77. 
      ]8 o3 A+ e; j5 Z5 x7 n
78. static int acnt = 512;
    ! C. p& q$ r0 S* R0 U5 a
79. static int bcnt = 8;
    ' r  l& q# x6 S+ p! s- P8 L6 w2 s
80. static int ccnt = 8;
    : @$ j) ?6 [# I: N0 N2 D
81. 
    8 X7 A0 x/ O2 P- T% ]# F6 y* i
82. module_param(acnt, int, S_IRUGO);
    6 Z: ?) Z) T) v- [4 i1 e* @' _9 o
83. module_param(bcnt, int, S_IRUGO);
    $ {/ q8 s: H) U: X' o3 w
84. module_param(ccnt, int, S_IRUGO);

复制代码

# Z* ~6 Y* G$ F  @" j, f      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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
6 z- w2 Y% q+ @2 v0 a: K