OMAPL138如何在Linux下使用EDMA3驱动

yyj

& [  P  B5 S# E4 R/ f8 h8 L

1. [code]EDMA sample test application
   : ~& O  t6 D- n$ R7 I0 r# U( M/ s5 |
2. /*
   - f  m6 q" p7 z0 ?* }/ b, L$ ?: V3 s
3. * edma_test.c
   
4. *
   : }) Z8 _7 V/ `- ^% Y4 x- F7 O
5. * brief  EDMA3 Test Application
   6 \8 \& f/ |3 s# c; i9 @3 h
6. *
   
7. *   This file contains EDMA3 Test code.
   , L7 I$ B( `9 Q8 a: }  H% [
8. *
   & {: _* O( ]# |* s/ [6 O  X# u
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
    9 d/ t& w5 s# k, @( W, M
11. *         TO CHANGE.
    
12. *
      Q0 {* e/ K, L' z
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ' g- O0 j. L- |. i7 q
14. *
    4 x& N# O0 q# w- U5 D
15. * This program is free software; you can redistribute it and/or
    1 @: J8 Z# w0 d* E5 ~! d9 I; d. t6 d; Z
16. * modify it under the terms of the GNU General Public License as
    5 d" j: t$ j4 r* c# [' c. Z& E
17. * published by the Free Software Foundation version 2.
    
18. *
    * I+ ]# J, K3 }) Z$ W7 }
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    * S- j- W/ z8 T0 k/ l
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ' h( K' [7 ?; v! i( A
22. * GNU General Public License for more details.
    
23. */
    0 |; N# ], Z& `( S1 P( e
24. 
    9 t" O- A% n) ^% I
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    " r1 v# M. I" E9 W- {) N
27. #include <linux/errno.h>
    9 b; _! v1 U$ x1 w( {) }
28. #include <linux/types.h>
    . ~2 `) o5 v# y. F* q
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    8 N0 b. p+ \2 M! j' L% A
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    4 S+ a& P0 [" T) ?; s+ ^
34. #include <linux/dma-mapping.h>
    & a, \/ Z/ i, R% l
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    5 j# F. H  F# ]+ ^; I; G
38. #include <mach/irqs.h>
    + G' L; A* f% M$ s9 h: G6 _/ [7 u" E
39. #include <asm/hardware/edma.h>
    
40. 
    1 Z+ j, H+ G& q' \  x& B6 e9 g
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    - g& @2 ?  u! p" s9 A  W, U" `
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    - E5 ~5 _+ Y' a, ]+ {4 K) O  z
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
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    & |: J0 Y# y' o; s: n, }6 Q
51. #define DMA_FN_OUT
    - n) s" c+ X* o0 v  \9 r- \! i& Y
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ' J  q" Q; c( \1 l, P' M
55. #define STATIC_SHIFT                3
    & Y6 ]2 V# n0 O7 j2 P# r, I$ D
56. #define TCINTEN_SHIFT               20
    ; D& ]5 \0 J2 q  [8 m
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ' m$ H, ~* n, [" @& H
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    % F! l' t' T# I) t* o+ q: C
62. static volatile int irqraised2 = 0;
    
63. 
    ( H, e2 X  m6 r" G
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & r5 d* z3 G1 q$ C1 u4 a" B! M
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    # q' u5 O- m6 r5 ]6 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;
    % r8 {) V, ^6 U! _8 I# R8 H6 U1 n) o3 [
69. dma_addr_t dmaphyssrc2 = 0;
    * I0 r; e  d! \2 }9 i4 u
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    0 |) h- S5 `# w. n& b: C. |
72. 
    
73. char *dmabufsrc1 = NULL;
    
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. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    % Z" k- X' ]* S( i: h) q% S
84. module_param(ccnt, int, S_IRUGO);

复制代码

2 K9 B0 b6 P1 W3 p2 P      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。
! }1 T3 Y; E' Z3 }     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。