OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   : J) {: ~8 C* p! A
2. /*
   8 C) Y7 O+ K6 I& a7 _1 N' m
3. * edma_test.c
   . ?+ W4 {7 r/ v6 {- K5 k- W: r
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   9 \* V8 S- G9 {& Q' g
7. *   This file contains EDMA3 Test code.
   
8. *
   , N7 {  U' j9 \
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   7 a1 t0 V3 t( m# r/ y
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    8 d4 P& u$ i% x: l/ _3 |0 l" _
12. *
    8 L9 `' V: @6 ]/ _3 @
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 z1 r) W( g* @+ K
14. *
    
15. * This program is free software; you can redistribute it and/or
    + a" ?5 @3 y" x& F4 {* ]1 d8 V1 i
16. * modify it under the terms of the GNU General Public License as
    1 N2 ]1 P3 s% F3 |- f" F
17. * published by the Free Software Foundation version 2.
    ( s3 z1 ]% g- s9 i
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ) `  h/ Z) I/ x' ^  k2 S2 O
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    * b+ w1 G9 i# V' o5 i
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    5 s3 T$ ?1 y% ?' o4 D! h9 [
26. #include <linux/init.h>
    4 v" t& p3 z* m1 q
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
      c& r$ l4 C5 i  ]; X
32. #include <linux/sysctl.h>
    + F1 R, v% j2 C5 j
33. #include <linux/mm.h>
    $ j9 z/ i# b# J* e; q- i, D( B* F
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    * u3 g4 Y- Q5 f1 `6 |* b! d& R3 K
39. #include <asm/hardware/edma.h>
    
40. 
    + W% I: d0 g! O
41. #undef EDMA3_DEBUG
    1 _6 M2 M, L( U9 _+ Q; [
42. /*#define EDMA3_DEBUG*/
    
43. 
    
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__)
    
48. #else
    1 g, p3 G: O9 r* ]! Y7 X
49. #define DMA_PRINTK( x... )
    9 t0 X; K! `. M) n9 ^9 X! y
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    , e4 E' S& j, m/ G/ [4 ?
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    + T' A% e6 t0 [
55. #define STATIC_SHIFT                3
    2 t% ~  F" ?) z$ @: T" [$ x4 y
56. #define TCINTEN_SHIFT               20
    ' h1 `5 K1 T% O1 u- B* m
57. #define ITCINTEN_SHIFT              21
    8 D! y4 W- ~3 r) @
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ' i  t; t3 k5 M8 H3 x' a  y
60. 
    
61. static volatile int irqraised1 = 0;
    
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);
    ) S. v6 J* \+ G3 ?
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;
    7 n4 r" V$ w9 Q4 g5 }/ k
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ) J$ l$ O1 K7 A9 ~- Y
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    . X0 _( k  @0 o# ~
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ) K4 @/ p2 i% ?. R0 `( `
77. 
    7 t0 C3 l8 d6 s+ M4 b$ ~' l6 g% `
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ) a! L' H$ v/ S7 Z6 W" h
80. static int ccnt = 8;
    0 \2 Y$ K# A( s7 o4 g
81. 
    
82. module_param(acnt, int, S_IRUGO);
    : W4 d5 |" L7 L' o! F6 J. m
83. module_param(bcnt, int, S_IRUGO);
    # g! K5 H; R# `) p
84. module_param(ccnt, int, S_IRUGO);

复制代码

: G" E9 }3 J8 e  z- K' z# M
( k" O/ Q7 v: n1 D      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。
' U# A8 j+ U# ^/ P* l6 l2 W# r5 Q
# _' b5 x6 i/ p7 p- \. ^' b