OMAPL138如何在Linux下使用EDMA3驱动

yyj

' P1 ~- O5 O: c7 j1 T" ~9 k

1. [code]EDMA sample test application
   
2. /*
   ! W& g4 Q9 {5 G1 L
3. * edma_test.c
   
4. *
   $ g# H: ]- @$ U2 O  W* |7 l8 @. ?
5. * brief  EDMA3 Test Application
   8 ]% _% Y' N5 x
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   : h  J/ v- |) W: z0 @5 c
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   & b; V& w  i7 C; p) N  W
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    + b+ e  \% K" V0 f4 _8 P: t
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    ; }9 k, m& g! ^# n( q2 v
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. *
    . r' {& P! h$ i) l+ R
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    6 W( Z9 K- k6 Z, w
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ' D: X1 C  \: d; x" N4 Z' V3 W- Z
22. * GNU General Public License for more details.
    " I/ G& q: i7 m+ u8 s$ _+ I
23. */
    . c# Y. o7 H6 P- r
24. 
    ! G* h# [2 V0 R& {8 }" T. T
25. #include <linux/module.h>
    * p; n9 Y+ j# {
26. #include <linux/init.h>
    3 x3 B" D, C( d/ F
27. #include <linux/errno.h>
    , U' V( m& K9 \6 q; g( v
28. #include <linux/types.h>
    # ?+ s9 ]$ _4 a/ Q1 v; D- v5 N! J
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    4 V% u) s4 ^3 q$ z0 V
39. #include <asm/hardware/edma.h>
    % ?# j9 H4 h" D5 A
40. 
    5 e0 F# ^$ L- b7 B1 g1 |
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    / W8 S% W$ |# D, n6 o; z; T- P
43. 
    
44. #ifdef EDMA3_DEBUG
    0 x8 s5 a% [7 g+ z' l! S
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__)
    6 o$ u1 c. @, V2 e6 W- z6 m) \% o& A
48. #else
    , J; L! `1 Z% D6 [& J
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    9 u* {- e$ R9 @- V& v2 ]. o
51. #define DMA_FN_OUT
    * ]  S) n  D/ T# Z* t
52. #endif
    
53. 
    / U% h  F: b2 @
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ; C% s0 f8 A: [7 b- s; ^; w
55. #define STATIC_SHIFT                3
    & u) p/ Q4 m+ l2 z
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    8 w! o( t  X3 h1 g7 j: z9 F8 X+ O
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    0 F7 N: D  X3 z4 ~( _) Y
60. 
    + C( u' }- L3 ?0 i
61. static volatile int irqraised1 = 0;
    ; \9 L+ I" e: Y3 F. c' t
62. static volatile int irqraised2 = 0;
    % X9 Y" N/ ~  {- M9 N
63. 
    # |7 \6 t: Y1 X, I  v
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    - x1 H. q: ~4 N/ ^, f; f
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    4 N- q9 @( i" t" Z1 B& O& n5 H" U
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    5 A! L3 P8 R' @# Q" z/ d: K& Z
67. 
    5 o1 E0 E# H# Q( A, a$ m4 l7 F5 z% C
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    : f  i. h6 G# O3 l& s
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    5 {5 ?( p. c& [: P" `! z
73. char *dmabufsrc1 = NULL;
    5 i* Q: P+ }8 ^0 N( j' |" N
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ( U' y* D% |5 a+ |: U8 I3 M
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    8 |& q! v! p: c$ \1 a8 E; x7 F9 K
81. 
    5 I. x3 |+ r- `: _( `0 {+ ~, ~
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。
; h# m( a0 z2 \8 a     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

4 d5 _/ y/ u0 e8 H. g- T  _