OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   - k! y' X( H! e) }* h
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
   8 g, T2 l6 R5 w; H; B% z
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    + X/ ]0 G1 a7 C" N% `, j
11. *         TO CHANGE.
    : @5 T. I- j$ A0 w0 Z. Z
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    - j0 o) u. y" |4 F+ Y  d
14. *
    1 V& D; q3 m$ G5 a2 F
15. * This program is free software; you can redistribute it and/or
    * y, L  p4 ~9 |7 X3 q" a
16. * modify it under the terms of the GNU General Public License as
    ) [! X, ^/ g, @' x$ }6 x4 L
17. * published by the Free Software Foundation version 2.
    9 l1 E6 x( i( l, s% R/ f/ K
18. *
    ) {2 h( i8 t* X9 q6 L
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
    & B1 A" \0 S1 ]! }& T) O
22. * GNU General Public License for more details.
    
23. */
    6 V4 t6 X4 n. ]% Y- h8 `1 |
24. 
    
25. #include <linux/module.h>
    , m6 \0 q# [( Q; L
26. #include <linux/init.h>
    $ w$ F7 l9 `) |* R
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    + _9 a" \5 A+ N/ W3 B) r
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    - i& A  Z5 M( w7 ^5 y
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    * y% I& v3 \. t
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    & Y% W4 {8 z$ j
38. #include <mach/irqs.h>
    - \, C: e/ J/ s2 }
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    % M' b0 ]7 s, e2 R' E8 O
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    6 p4 `1 ~2 V5 T
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    + C/ n' s/ Y5 d, H9 n/ H1 H9 D
48. #else
    - r& a) C+ W- P/ I; Q" u  A* g
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    * _6 t* J$ G9 g% |# ^" O; W- ]+ F
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    : n# }0 g0 P  H; _8 k6 j! Z  h; e
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    / V6 j' j% ^; N; o& O: b4 }
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);
    
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    + z1 G5 M9 j+ Y% b& e+ @' }
67. 
    , }+ @  ~4 d( u/ ]) V. i7 D
68. dma_addr_t dmaphyssrc1 = 0;
    + p2 e+ J4 _. D" N6 M
69. dma_addr_t dmaphyssrc2 = 0;
    : q5 I/ J8 _' V- r8 U
70. dma_addr_t dmaphysdest1 = 0;
    $ d6 j( C. r0 ]7 L7 R* l& U( l
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    / y8 C  l, t8 Q& s. C( `
73. char *dmabufsrc1 = NULL;
    7 m0 m. c! [. v1 b& E7 |1 p5 O4 B. E* P5 d8 u
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    ' `; {7 |' R/ y$ e- u
76. char *dmabufdest2 = NULL;
    0 `# S) c- K( s7 J9 P" u: I, f$ a
77. 
    ! _& t3 l# F9 X  j* \" `
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ; W8 O* n6 b( q( D3 Y
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

% ^& Q4 q7 S* {* f0 g8 Q
+ Z+ ^$ U" M& J+ ]  l      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。
3 Z: n4 K( n% U$ F& Q3 Y! D/ q+ N     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
1 Z  i% l0 w5 i9 ]% c1 D7 L( j+ X
" v' J' d6 Q" ]% i" s, D% M