OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   6 F/ ~1 m( h4 O" d$ X4 z
2. /*
   , S- ]0 C* ]9 O4 W1 T( V
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   & n7 t( X1 e- a) `8 e7 ~! C' {4 g
7. *   This file contains EDMA3 Test code.
   2 t% A' f/ z) ~8 Y+ w
8. *
   0 n7 p9 i& [$ p& T# t
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   & b) ~- n5 {2 A6 \2 g$ O# E* O
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    ; I3 U+ E' ]3 d, C7 {
11. *         TO CHANGE.
    ) x2 S8 x+ d; u+ D6 l
12. *
    4 L. c7 B, T/ n% L6 T3 V8 c. r
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    5 U' N7 a' U) Y, g6 d8 B) J
14. *
    - e2 {$ B* K) M) Z- q6 G3 X
15. * This program is free software; you can redistribute it and/or
    & ~+ b- C$ E, r
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    * E" F* c3 S( N+ }, Q/ r
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ( u5 `- n" {( b3 G* k& T
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    
24. 
    $ M' X9 p- [5 s, I( A
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    . \- a- h0 r' j
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
      p+ x7 a" ]8 `
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    & ~! A( U. G. K: ?  J
34. #include <linux/dma-mapping.h>
      N: A1 G' g; r
35. 
    
36. #include <mach/memory.h>
    ) ?5 Y: O. X: [
37. #include <mach/hardware.h>
    $ ~  g$ ^5 ^1 p9 e
38. #include <mach/irqs.h>
    - @" _% D) Q! c/ j3 `! c2 w
39. #include <asm/hardware/edma.h>
    
40. 
    & g% H0 y, T0 g* X# z' h5 H
41. #undef EDMA3_DEBUG
      L! I2 R* C4 P, S- b" j3 W
42. /*#define EDMA3_DEBUG*/
      B$ \9 T( b! T6 H  F1 B2 h! W
43. 
    ) i. V( M/ l) n8 x8 R
44. #ifdef EDMA3_DEBUG
    & T! P$ {7 O  g2 z
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    6 i! U8 R: A, i8 r
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    8 m7 [, X. [- C* A0 v3 s
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    & V# L) ^1 b, L( E- J" z  B# k0 V8 t
51. #define DMA_FN_OUT
    3 w7 G, C0 S" A
52. #endif
    6 ]/ S6 [) f/ ?
53. 
    # y% X9 P- Y8 F- [/ x% V  D
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    # D; @+ r) n9 ~% Q% e8 \
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    / s8 r( A" f- t; U' `! l6 I9 m( p
60. 
      X& a: ~4 o  B. Z
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    # w# z4 }3 J( r$ L2 M% n
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);
    
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    ) q6 V; a- w" [) F# c
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    * ]+ {, X  M0 F& v3 w  s$ V
72. 
    
73. char *dmabufsrc1 = NULL;
    7 R. `; n5 {& Y6 y4 Y( P
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    / U. T7 x& ^$ P
76. char *dmabufdest2 = NULL;
    - F  M9 R; r5 ]1 _) H
77. 
    ) m8 C5 [! \" Y9 p4 W+ u# W% ]1 K6 y
78. static int acnt = 512;
    ) E& J/ v7 K4 R& y9 G4 r
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    ) V" L+ _0 {/ {! ~6 t2 h% G
81. 
    8 y% Z- ?0 }# ]
82. module_param(acnt, int, S_IRUGO);
    $ d# n$ b) g; [, X0 s
83. module_param(bcnt, int, S_IRUGO);
    : V: s; Z" O7 g4 m6 ^: G* T
84. module_param(ccnt, int, S_IRUGO);

复制代码

* w' `4 q0 x/ z# a( ^' E      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。
; W1 w. d& f2 ^8 I$ K' V: D3 d     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
/ Z8 g% Q. K/ \/ \1 s
6 K1 b1 }- g1 p% _: U