OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   8 X' f% ~% D% |
3. * edma_test.c
   ' s4 E5 u+ g$ t6 J1 a: c0 M
4. *
   $ R7 p8 U% @7 a3 h& M) B( l# m
5. * brief  EDMA3 Test Application
   2 c9 ?1 ]$ a# I9 j1 \/ p
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   / M, v/ Q5 k% H8 k# T
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
      s4 B+ u4 I' j% `5 _# Q) Y- Y
11. *         TO CHANGE.
    5 q  j* s3 ^/ Y; s4 G
12. *
    % Z; @- ]+ L7 w+ T  R6 K
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
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.
    " G; r7 k2 m+ s' v( v8 q
18. *
    0 A0 r9 K& L) Q8 t/ m0 }* 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
    
22. * GNU General Public License for more details.
    
23. */
    6 u/ A  I6 o% [3 Q5 b1 r
24. 
    # }. d/ D1 k! `+ }' Y; q
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    " R$ p; [6 l+ r! {3 Y' h
28. #include <linux/types.h>
    ' o7 R. [/ E3 k$ v( P2 b0 ~5 x6 ^
29. #include <linux/interrupt.h>
    2 E1 I$ P" z. X% Q4 h
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    4 z* N: b1 k5 Z* O; I1 U5 O3 ?1 I
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    2 [: F" \1 V1 P2 p. F! X
34. #include <linux/dma-mapping.h>
    . o9 c+ Y0 [4 H' a. c" z. X
35. 
    
36. #include <mach/memory.h>
    " g% p) W* s$ P! x+ `: E& R. q
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    2 L( u: r' k5 S" }9 O! H8 g) H
39. #include <asm/hardware/edma.h>
    0 r: b: z+ U, w" W
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    4 i* }8 U- ]" t( k; i/ r
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    + B; Z4 w4 z) L( ^2 a5 P$ T
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    & V" E) Q, U6 s( H$ M0 L
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    1 d) H+ g/ L* e* ~
50. #define DMA_FN_IN
    / @1 u; s% |! e2 c3 a) {$ J
51. #define DMA_FN_OUT
    2 |0 z, y' j3 y- W. e, B7 [
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
    
58. #define TCCHEN_SHIFT                22
    : I; I' ~- i" q1 K3 E0 R, r' E
59. #define ITCCHEN_SHIFT               23
    
60. 
    5 a" s1 h6 U% x6 D
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    1 p6 d: I  J) }( P; D/ D7 z4 t
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);
    # J. [2 i  {, V9 b$ e
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    + {5 g9 v3 o% v3 S8 p9 B
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    ) _; ]4 L$ W( ^! E) J$ U
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    & ^1 l5 h1 C: S- k# ?: P# g
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    , d+ f8 ]1 A0 q( S0 m
77. 
    
78. static int acnt = 512;
    3 d& K7 v0 d5 c- ^  U5 ?& D- Q
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    9 ?; U2 E' z+ x
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    7 a* [) V2 z9 l/ f7 K
84. module_param(ccnt, int, S_IRUGO);

复制代码

3 ?# a) m5 }/ W' `4 T
      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
# Q4 S" H* L4 m4 |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。