OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   * ]9 ~$ x: S1 ~" [7 ^; n
2. /*
   " Z5 \3 k( U1 {/ @' @2 s
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   " y+ \- E& w" R8 F; _
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
    
11. *         TO CHANGE.
    6 u- b. D7 V9 }4 A5 d
12. *
    ' z, r) W! v1 U8 c% D
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    8 \5 V2 C/ s/ }- m
14. *
    
15. * This program is free software; you can redistribute it and/or
    * a9 a6 i+ ?7 m# l0 ]
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
    ' r' p8 ]  O1 R/ F; f
20. * kind, whether express or implied; without even the implied warranty
    ) w3 i3 \$ T1 P: O1 p) }
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    7 @# H1 `- a$ A- g* b& b! R
22. * GNU General Public License for more details.
    
23. */
    . A" m7 D6 v$ p
24. 
    
25. #include <linux/module.h>
    : p! N. t& j2 N; M
26. #include <linux/init.h>
    3 Y8 ~, S+ v1 u- o7 i; o4 {. u- W
27. #include <linux/errno.h>
    9 R" P; D; f" j$ ~  ^4 y8 o- ]
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    7 U1 r+ @+ [5 @7 {7 I
30. #include <asm/io.h>
    / D8 p# g& X0 f: l; {) F0 m  D2 U( h
31. #include <linux/moduleparam.h>
    # {/ H' ?$ h  Z! x
32. #include <linux/sysctl.h>
    6 s* q, u7 R8 O- w7 D
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    5 K9 v: m4 \( d9 h2 _. P
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    : |3 h7 I" T4 o, a/ M8 R! }) |. R0 q7 j
38. #include <mach/irqs.h>
    - ]! d4 @  M( e+ q
39. #include <asm/hardware/edma.h>
    7 ^* K! y" k0 f$ K6 D- _( S
40. 
    . b3 P5 p7 i8 ?; s
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    5 C8 T  G) R- S' [5 a3 \& F
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    + Y) k; f, t. O$ I: b7 n
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    2 k  g, {) E+ T7 Z* l
48. #else
    ! s  W/ K% k: o6 B
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    4 ~7 |7 y9 v8 ~' o" v& x0 W* ~
51. #define DMA_FN_OUT
    ' R4 K  J0 F' p" I! @) @7 ~  N
52. #endif
    
53. 
    / B8 {5 @& ^, T: h0 Q
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
      v0 Q) n- j3 @0 v6 R) S
55. #define STATIC_SHIFT                3
    ; h4 t7 j6 {/ I+ h" X& |* r0 p. ~7 j
56. #define TCINTEN_SHIFT               20
    / F4 l) x; l6 h5 k$ t4 h9 [
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    % V, N3 y7 k3 d7 W0 A, S
59. #define ITCCHEN_SHIFT               23
    
60. 
    + s/ V7 J" K4 G7 g, l5 r$ C6 O; K) M+ f
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    ( Q. }3 e% D# f, t
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);
    3 _; O$ z+ A) u, s
67. 
    7 R- O" C- r( j1 Y$ R# c
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    8 W7 g1 t4 Z& Y# Y
71. dma_addr_t dmaphysdest2 = 0;
    3 Y& R. n6 ]+ S" I
72. 
    
73. char *dmabufsrc1 = NULL;
    . J; R! E5 H" M% D4 r) c
74. char *dmabufsrc2 = NULL;
    + W' n$ x, r& l* e
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    7 U% ^2 P2 w: Z8 F5 g) Q5 p( {' f* C
79. static int bcnt = 8;
    ' I3 P/ O) |- D% ^& T0 I+ Q  P7 _6 h
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
      {. ~5 b8 w# `0 g$ }6 T' h* o
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
  M$ X7 b/ _; ~: S' z2 L' sarm-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。


/ I! {' W1 @; Y; C! x