OMAPL138如何在Linux下使用EDMA3驱动

yyj

+ e- P: a) {% f8 Z

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   $ E4 Y; p0 O7 U9 d5 N; b
6. *
   3 i% W& X, g) _  n
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ! n, L7 X, p' N4 A
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
      l; k- `8 K: R$ m0 E" y
14. *
    - {( a" o- f1 j6 U) v
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.
    
18. *
    3 y' M0 `. v5 a% e" K6 v
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ; g) H5 H5 p0 j" x% s( |" I% F9 G
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    2 P# J  A7 L8 C0 X
23. */
    % X2 p1 u4 x; y/ ~  e
24. 
    9 j* u# Y% T; e/ @5 k( V
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    $ q9 @+ z- P3 h9 M$ |4 ~! ?1 y! |
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    * j1 V) A$ l) {) S" `# p" N
29. #include <linux/interrupt.h>
    4 }4 \) E  I$ a6 i, g/ g
30. #include <asm/io.h>
    4 U$ f' }4 v, A0 u7 f
31. #include <linux/moduleparam.h>
    5 b2 y. Q8 c/ B7 [% C8 d/ c% k
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    * K/ i& k% q+ v* i2 C$ T3 ~
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    " |2 ~* f7 r/ u; y
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    5 [' N" K, w4 }0 _# D
40. 
    
41. #undef EDMA3_DEBUG
    . E$ `3 c& H1 H) d. T
42. /*#define EDMA3_DEBUG*/
    
43. 
    " `: s( c) V5 c" f0 h/ h0 C+ r8 |
44. #ifdef EDMA3_DEBUG
    
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__)
    8 m. a  Q" V4 c1 X+ F
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    ) Z  Q/ X% J; h; G6 M
52. #endif
    : F4 v- e2 C( s  a" X/ z# G  q
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    4 s' _5 ^' L0 j" C, j/ n+ {  w
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    " I: w% e9 {3 m# E6 N
59. #define ITCCHEN_SHIFT               23
    / [% x( ~6 J4 K) x, R  B
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    / j( S8 F4 c& R+ I' C( K" G: t5 h
63. 
    1 M4 g) G/ |/ b' N
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    , ~" z3 l/ _! q. X$ U1 z& `3 V1 v
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    5 F  A% t8 f" Y" _3 z0 F) o5 v
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    3 _- J" L# ~) Z% F
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    . }9 E8 t" L; Y; n7 R9 M
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    . w9 e. f. ?% }
73. char *dmabufsrc1 = NULL;
    9 _) [. f$ Y$ u- I! I- B0 p
74. char *dmabufsrc2 = NULL;
      y& c$ @4 W3 Y7 c1 F2 V" G
75. char *dmabufdest1 = NULL;
    ) P: o* y. k/ y# A
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    " m6 p* r% j: ]9 O# Q
80. static int ccnt = 8;
    
81. 
      r" y: n# Y5 G1 S* R& a8 I
82. module_param(acnt, int, S_IRUGO);
    ' P7 B) r# M, x( G
83. module_param(bcnt, int, S_IRUGO);
    9 P: N; v+ b# m# d% X
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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。