OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
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
    5 }# b* i) W& x) B0 r, t9 y' s. B" x
11. *         TO CHANGE.
    
12. *
    6 z) A8 H$ e$ y* y3 S9 [
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    1 G8 d! r$ A9 l; {) A- U3 a
15. * This program is free software; you can redistribute it and/or
    8 x# b: I' q& \* H
16. * modify it under the terms of the GNU General Public License as
    2 e6 H9 c; q0 P+ S! @' ]1 f
17. * published by the Free Software Foundation version 2.
    
18. *
    & d# A; ~! `3 J4 q: G; _
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    8 S0 w/ a9 c6 }/ @6 B4 Z3 H+ w" o
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    : p, H; e6 P1 `5 ?
24. 
    + O' v+ t$ Y+ S" ~  J: ?$ Y
25. #include <linux/module.h>
    : i$ }4 Z4 k3 k$ p* k! p$ D
26. #include <linux/init.h>
    * N  {, j) z+ ?# J3 {- ]8 b3 v
27. #include <linux/errno.h>
    3 p3 t) I% y- ]2 i" B9 S
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    " {) }- @, Z, U
30. #include <asm/io.h>
    ) V4 N% R0 G, r$ B
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    7 S0 \1 b" e3 a
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    . u- n9 J& ~- Q' ?5 Z5 \( j% X
38. #include <mach/irqs.h>
    " Q6 ]6 O* ~' ]/ ~$ D
39. #include <asm/hardware/edma.h>
    
40. 
    8 K9 A" n/ C4 ^" a  P5 J
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    $ m. W: v$ x# k0 \; L+ |
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__)
    6 n# H7 a+ B$ f: `  t! |5 p* I: Y
48. #else
    
49. #define DMA_PRINTK( x... )
    - G9 ^& _9 c6 @: Q0 b
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    : ~  L7 O% E" K2 `& r' o4 w7 x5 e
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    ; x9 ?  G  ^) d# u9 L) K9 n8 n
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    ! T1 {5 g' {7 s) t" U& C/ ?/ O" n
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    . x) S% l+ x+ O9 a
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    . m# y& b+ j+ J9 W5 A
63. 
    7 B8 |/ ]. N) c8 A! J
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & c+ L$ _9 |" ^. r4 L: N
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    . I) x8 `5 l9 I9 u5 b: q
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;
    ) [, r8 @) j* \7 q4 w
71. dma_addr_t dmaphysdest2 = 0;
    $ @  O0 y- {) ]$ r" _- j
72. 
    
73. char *dmabufsrc1 = NULL;
    9 l3 C. x7 L8 U+ }% C$ K
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    4 f( T5 d5 \0 B+ y3 x- M
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    ' i7 Q9 w. f6 V1 m( x7 z4 U
81. 
    
82. module_param(acnt, int, S_IRUGO);
    2 _1 n% q( [; S
83. module_param(bcnt, int, S_IRUGO);
    $ W& L+ d+ b- }
84. module_param(ccnt, int, S_IRUGO);

复制代码

. N! e) N; k4 r
" [6 W8 w- t3 b: |0 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
5 Y1 m- b( u2 S* T7 S6 Farm-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。
$ \: k2 q9 t+ S7 ~2 \

! R* C+ D" L6 N