OMAPL138如何在Linux下使用EDMA3驱动

yyj

4 Q" w# v& e/ y2 l! I, e6 U

1. [code]EDMA sample test application
   
2. /*
   & ?/ v1 O( u" u! Q5 D) D: b
3. * edma_test.c
   . `3 ~% }3 Y7 I  ~% s
4. *
   & `$ z4 q" O4 H' _4 o. @# b$ ~! F
5. * brief  EDMA3 Test Application
   % j; E- j6 f0 m' `3 D
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   ; R3 d, X# l6 E& ^
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
    : Y1 |4 f% u, i1 E1 a
11. *         TO CHANGE.
    
12. *
    2 }. I. U0 M9 a- A  D1 c/ e" L" N
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    9 ~$ G( x$ r% _8 w5 y
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.
      c3 K- [4 r. P9 ?/ I- `
18. *
    # v! Z" T! o* p* Q! N- C% v% z
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    * A% w5 b$ h7 v; }
20. * kind, whether express or implied; without even the implied warranty
    5 V* g# {; d4 ?) b
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      ~0 L- ?; g0 m. I0 i6 `  T3 V
22. * GNU General Public License for more details.
    1 E, a. D' R& Y+ F% @/ j
23. */
    - |7 e$ w  I8 A' k) q3 Q  z4 l( y
24. 
    9 ^2 r" m2 t0 A/ x7 ^9 a
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    4 ~9 b) y, \2 v0 ?
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    7 h5 p: h2 Q$ d5 M& ?
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    / {8 I" }" |4 L9 r0 L
33. #include <linux/mm.h>
    # F- u" v  k1 D! z0 T' \) ~$ T
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    ! _+ l' q7 p- o, [9 V
37. #include <mach/hardware.h>
    0 D! O+ s* n8 L* o
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    8 f% s# E3 q$ ^' s7 Z& J
40. 
    7 L" s( O& L* N6 {
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    1 w; [$ N0 C% {5 P& F6 ^
43. 
    
44. #ifdef EDMA3_DEBUG
    $ H2 m7 t3 U- T. ?2 o# @. x
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__)
    $ L4 D3 E3 N* w# b3 X7 O$ u
48. #else
    , ^  R, w2 }; I( u# o
49. #define DMA_PRINTK( x... )
    , \8 k2 [* G' h& K# h: }  [
50. #define DMA_FN_IN
    0 o! E" C: w# k
51. #define DMA_FN_OUT
    
52. #endif
    ; V: j. w. N. I  F( B
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ; g3 V- j5 p. D1 q
57. #define ITCINTEN_SHIFT              21
    * ^) k( t3 Z  d% f" V6 @
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ! P) _8 z3 A3 V7 s4 P/ @( ~
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    * s4 q0 }# h! ~) z0 G
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);
    
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;
      {2 R% @% N  z2 b5 S& W
69. dma_addr_t dmaphyssrc2 = 0;
    8 i- \, h) Z: |: F# q8 ]
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    % L* z6 j  `- k. l4 n
73. char *dmabufsrc1 = NULL;
    ' ]0 J$ z7 @. p7 G" M
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    ; Z# L; _! ?5 q/ ?& |: s. p; D
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
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。
" |" b5 u! [' y4 t! V/ b" [. l     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。