OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   ' I. N  P! Q* a
4. *
   9 F# K5 \) _1 V. s5 V
5. * brief  EDMA3 Test Application
   
6. *
   7 p( E) e1 Q5 K9 E# J. @4 {7 @
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
      Z# s! k: r+ ~' ?6 Y- {
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    0 y/ A8 ~# O+ c. b( [/ N! x: A
16. * modify it under the terms of the GNU General Public License as
    / I! \7 X( b% v2 m# W. U' X
17. * published by the Free Software Foundation version 2.
    3 R$ J% e- v& [5 R- f
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    # L* C2 A3 V9 ]& ^
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    : P) Z3 U) j: T' f$ o) J( A
22. * GNU General Public License for more details.
    5 p2 L. v0 U3 f# H4 F
23. */
    ; T+ r/ L% b0 z0 F1 y
24. 
    
25. #include <linux/module.h>
    ) A5 [+ M# }0 u( l& z, H" o  F
26. #include <linux/init.h>
    ( }0 `6 g/ M# y: l' j
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    " v# B1 Z6 }' M0 r8 f8 i
31. #include <linux/moduleparam.h>
    6 j! p7 F0 V; X, S
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    ; Q4 R4 V$ h! E( E, \/ {
36. #include <mach/memory.h>
    ( G$ b6 d" @# s' I3 \  V4 \
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    ; J! g3 K" `1 A. r
42. /*#define EDMA3_DEBUG*/
    " C  A8 }: |6 Z
43. 
    
44. #ifdef EDMA3_DEBUG
    , C, {. L" i* S/ {
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ' ]) \0 r; e' {/ g: `. M+ v' s
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    - @4 t& V/ B. {& X
48. #else
    0 z7 c0 \* ~2 ]& v' W1 t# J
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    ' c; p. V, E6 Z$ e
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
    8 v/ l% M) r0 N2 l2 G( K" P/ A! Z: t
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
      w9 \9 k4 C# E
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    / A) t( w# H+ M, ]
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);
    ; r: T' B5 Z! g/ k7 B( b5 K
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    6 Q" I+ R3 D! N
69. dma_addr_t dmaphyssrc2 = 0;
    4 {; X/ d4 X& e0 g
70. dma_addr_t dmaphysdest1 = 0;
    8 R' C9 F4 e# \- w
71. dma_addr_t dmaphysdest2 = 0;
    4 c! |- g; W2 j  m/ F2 s1 M; |
72. 
    
73. char *dmabufsrc1 = NULL;
    6 G! H$ s' r* n; d6 N" d
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    / p) ^9 R* z+ ~% K
76. char *dmabufdest2 = NULL;
    . o, N+ Q6 P+ a) B
77. 
    
78. static int acnt = 512;
    * W$ k" G  S3 h7 z" k5 w% @
79. static int bcnt = 8;
    1 R0 T! O. F+ g
80. static int ccnt = 8;
    ! M( u1 M( |! ]
81. 
    
82. module_param(acnt, int, S_IRUGO);
    3 P: R9 w, _* j% H( T
83. module_param(bcnt, int, S_IRUGO);
    : J4 j- [$ n" Y% u3 M
84. module_param(ccnt, int, S_IRUGO);

复制代码

4 f' x: R5 D  p      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。
8 Q7 @4 A& Q  M6 D& _% _
6 I; M5 B3 N8 K
/ r' e1 b* e: n! k