OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   - p7 c/ x& g# ~- o: d6 s
2. /*
   ; V$ ?4 B7 K; E7 C
3. * edma_test.c
   7 |- X+ d. Z8 }% z  U# s% F8 u
4. *
     w7 A. u3 \: C1 R9 M
5. * brief  EDMA3 Test Application
   2 w5 M1 I$ Y1 E" Y$ u/ j
6. *
   " Q0 R0 R6 h8 Z( W) z7 K  m
7. *   This file contains EDMA3 Test code.
   
8. *
   + B$ O/ t; f5 c3 c# T4 b
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ( K7 }  ~8 _$ U  W1 F
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    0 R" z9 N) J1 H5 }- z6 e6 n4 ?% n
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    2 Q9 @& [! E' c* P8 x
14. *
    1 p- h. D3 F5 u
15. * This program is free software; you can redistribute it and/or
    # D6 d/ h6 w5 K6 g) T1 t6 \
16. * modify it under the terms of the GNU General Public License as
      K, W- P+ ]& w2 f/ W
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    2 q% V; w! Y) k; V! C: G
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
      q* y' x; _# J3 T0 ?! q
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    7 y$ C( ^) v: x" Y* W+ \4 F
29. #include <linux/interrupt.h>
    3 \4 a$ b- ~2 N
30. #include <asm/io.h>
    + J: S' }! d, r' y$ |1 N9 e9 \9 V
31. #include <linux/moduleparam.h>
    & g  A  \8 L* o& j/ U
32. #include <linux/sysctl.h>
    4 ~: K$ a/ S2 M/ v2 M, w6 A
33. #include <linux/mm.h>
    3 [) _: X: e* }3 h
34. #include <linux/dma-mapping.h>
    : ]% x$ w9 X$ z4 }" `" f
35. 
    
36. #include <mach/memory.h>
    # ~8 M) t- F6 B
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    . }7 x3 o. K& b
39. #include <asm/hardware/edma.h>
    ( \/ Q! t! K6 H, O
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    6 |9 l) G' G5 S4 |+ l9 Z* z, b
43. 
    
44. #ifdef EDMA3_DEBUG
    ! `7 z5 N$ f) I7 _: M0 `
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    4 U& M! _: i% a  h6 b7 o% {
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    6 J; q4 X$ {* |( I% M" d
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)
    & C, t+ F+ g3 C; Q4 A) A# l
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
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    - l. |3 @. T  o7 {0 B0 m. S
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    # R' T4 H, [4 H
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);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    6 c; Y& ^1 |( }6 K1 m
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    ) v- k% A  X  _  c3 m
79. static int bcnt = 8;
    $ Z+ I) d/ r' g, S! |
80. static int ccnt = 8;
    ( w7 r; W# t( a# u. P; X
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    3 d& f) v3 F6 ?5 w) s+ X" [
84. module_param(ccnt, int, S_IRUGO);

复制代码

# O. n: r9 O) N/ E6 o8 O+ N( {
      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。
; F- t! \/ D" p/ Q5 q1 K* k     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。