OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ! f; q' A) |, o6 P
2. /*
   1 G$ s; ^: J: ~2 T6 l: v
3. * edma_test.c
   % q% Z6 y7 a5 N3 ~0 \% U
4. *
   # k4 L* B5 C0 |$ h1 B
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
   8 x3 u) b. ^  a% h  \) N
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    : G* R4 v) L# r- x9 A7 k7 ^
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
      u/ ]  j' X+ q" Y
14. *
    ( n0 m8 ]. E; t1 E4 Q
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. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ) d7 U% |* z' S
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    & |) v- G  G( L# O
22. * GNU General Public License for more details.
    6 d/ r: {( {- j9 R& {6 D# I6 T
23. */
    9 d" n1 s4 |3 K. ]1 s9 ~
24. 
    + N& s5 G2 A) F2 r2 a8 ?& o6 C
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    3 r# {' h* h2 N- f0 I' b. H
27. #include <linux/errno.h>
    " t  `3 P3 R$ ?9 k
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ( B( Y2 c3 W3 W
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    , X; b8 V+ ^+ |" H5 d# G1 ^4 ^
33. #include <linux/mm.h>
    3 n, v* I* R$ A: e4 x# ]4 p% H' u
34. #include <linux/dma-mapping.h>
    . r* y3 x( Z$ o. L5 W( w
35. 
    / |8 E/ Q/ |: L/ x3 F; i; z5 V
36. #include <mach/memory.h>
    ; ]6 D+ P  ~1 ^/ a& n
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    6 f% v1 R% w2 m4 S% _: O+ R3 K
40. 
    7 D" A" N. R4 w! i4 l8 R5 A( h7 X
41. #undef EDMA3_DEBUG
    - G/ Y# _) B9 h- |, `6 h
42. /*#define EDMA3_DEBUG*/
    0 j7 [. ?6 @* r" F3 F1 ?& `
43. 
    # f3 p/ Y2 E  t0 U4 r0 v
44. #ifdef EDMA3_DEBUG
    6 j* A/ v' ~) E" c
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__)
    . m2 o- x. f8 j
48. #else
    
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)
    2 X" x+ P: D6 E" W) e" o
55. #define STATIC_SHIFT                3
    8 U, y0 f( z0 b, d1 v7 _
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    1 m+ S5 Q7 Z! J' G
59. #define ITCCHEN_SHIFT               23
    5 p9 r6 L: x9 i. p( a# u
60. 
    ' u4 S9 `6 U' s, S
61. static volatile int irqraised1 = 0;
      g+ O# \8 ~! J6 D
62. static volatile int irqraised2 = 0;
    
63. 
    
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);
    $ {3 Y) p1 e* T9 u) p4 O. I
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;
    % K4 o, v$ z* c4 @# k+ {* n
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    . V' f4 u7 ~4 Z% \
72. 
    * V4 k0 E9 C2 d6 b6 k
73. char *dmabufsrc1 = NULL;
    : T, f0 s# ]* N  `+ D; n+ F
74. char *dmabufsrc2 = NULL;
    ( D; j" D. o( a: p' o, ?2 [
75. char *dmabufdest1 = NULL;
    ! j' @& x9 @6 H+ G6 N0 o8 t/ s* x
76. char *dmabufdest2 = NULL;
      E+ T2 y; V$ r3 X  `
77. 
    - Y! ]* ?& K% L$ g- J) J0 e7 w, k6 V6 d
78. static int acnt = 512;
    5 M. @" x1 L4 O3 t8 [6 ?& Y2 ~  M5 @1 ~
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    + r0 t3 Y# V4 K$ s2 T' A& ]
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
$ X" G: T* t8 O# x/ A3 A  u5 _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。
5 O1 h- {$ J- B9 F+ ~' f     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 ?/ g1 ?# _  Z' |