OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   1 V2 \9 T) f# v4 h  D) }* o6 b
3. * edma_test.c
   : d4 w5 Z" o5 _  l- b1 c
4. *
   # \: E" \6 N* \; v. b- r5 D+ X
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
    ( O$ e" J. u, x  a
11. *         TO CHANGE.
    
12. *
    % C. I& x4 m" D$ `. k+ z5 s; K
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    + o# l6 u' s( y- D
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
    
17. * published by the Free Software Foundation version 2.
    & O" z( |4 p( N! [8 f
18. *
    " [* ^7 R7 u. n' e
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    % Z' q  B7 |- n4 y6 B* K, q/ E" W
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.
    & q: }" @4 q5 G% b7 f8 Z
23. */
    
24. 
    
25. #include <linux/module.h>
    ) H; D4 V% I# P- }1 N  o
26. #include <linux/init.h>
    2 G6 M; v/ s+ ^. D
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    3 m* @, l# a* @7 d
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    " r2 \, r6 J9 A; r
32. #include <linux/sysctl.h>
    " r: t" k/ M/ Y" G
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
      {( F! l$ U9 A4 s
36. #include <mach/memory.h>
    # P2 i; u1 n7 g& T) O2 l1 n( H; l
37. #include <mach/hardware.h>
    8 H! f/ n2 S5 g+ N
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    5 E: N# f4 X2 E& O$ s
43. 
    # U& I! B5 P# a/ F  `6 t9 D
44. #ifdef EDMA3_DEBUG
    1 Y* g! z" m# p2 X
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    , g! L5 |8 c( V! F. z
48. #else
    # |; J) Z/ i/ ^
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    " G/ N$ w. Z8 d( z! ^1 E" o2 A
51. #define DMA_FN_OUT
    
52. #endif
    : ^5 V, e; D; `" d# l+ K
53. 
    4 N8 W3 n, X3 T" S7 p7 Z2 O
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    3 l5 V% t! N4 n& j
55. #define STATIC_SHIFT                3
    0 R" ]  Y& I9 o! T* U9 B
56. #define TCINTEN_SHIFT               20
    , {- X# s, d+ J# \1 R4 {8 F/ ?9 a
57. #define ITCINTEN_SHIFT              21
    + G+ D' Q- _# ^6 h* a0 j' b
58. #define TCCHEN_SHIFT                22
    2 g. M; H2 I8 q4 S/ t- n- S9 P% M
59. #define ITCCHEN_SHIFT               23
    
60. 
    ' v9 m+ j' ~1 j: v! q  ^9 J- T# m
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    - Q/ x+ w8 L) d
63. 
    ' w+ \  ]' J$ q) s5 ^
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , a! I$ L: J3 b& t4 C  o
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    " W; i9 U3 }. [$ T2 L2 a  E2 M
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ; K6 \" h) ?3 O" ^  O) A: \2 i- n
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    2 w& {$ a5 Y- o  V. c
70. dma_addr_t dmaphysdest1 = 0;
    ; U6 `, Y+ ?3 Q; g
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    & N. U) ?( ?2 b. ^- _
74. char *dmabufsrc2 = NULL;
    5 [/ _& O3 Y$ ?
75. char *dmabufdest1 = NULL;
    2 E. Z8 I9 i1 z1 i
76. char *dmabufdest2 = NULL;
    1 Z( J/ L7 |$ d& }! H4 ~7 i% _% C
77. 
    $ L6 C4 r! q% n0 a1 ~' f( D0 p' O+ h
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    * b) Q" n0 {2 p. }. G9 G' `
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

3 \4 v' y! K* u$ {) h
/ d$ l- F8 |/ k2 X! _0 S3 N7 M      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
3 i/ H. B2 ~1 sarm-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 s3 s. {$ ]" H% ~! i0 q- `  e     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。