OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   # F/ {; f% L+ \# `% b9 Z
2. /*
   $ f& y8 |" P) u. t- _0 o' |
3. * edma_test.c
   7 A, ~" R5 i* w, N  D2 r
4. *
   6 o9 l( C/ w! X  M  G
5. * brief  EDMA3 Test Application
   * H& i8 `* p( \* Q; N
6. *
   1 f" l: j6 M  n% {2 C$ g2 L* ~
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   " k6 X$ K& a. R5 A/ z+ c
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    ( `5 u$ e# c% a# S( F
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    0 i. K; G& C, }0 c% D
14. *
    
15. * This program is free software; you can redistribute it and/or
    " ]" [9 W0 Z" b6 Q
16. * modify it under the terms of the GNU General Public License as
    - Q. A$ e$ Z, T* B& e) o, j
17. * published by the Free Software Foundation version 2.
    
18. *
    + |0 R( P+ m/ D* g: K+ i8 e# W
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    7 K8 w; e' z: V. p% K" t
20. * kind, whether express or implied; without even the implied warranty
    3 `8 S0 @+ i+ r5 N4 [% s" ^
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    ( W4 d- h3 u3 p$ E. X# M' j
23. */
    
24. 
    $ L* ^+ S- O/ y' i. ~: B& A
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    ) I5 R; Y' J, }" r" w
27. #include <linux/errno.h>
    7 N3 P, U, \: c7 P/ ?: v( O
28. #include <linux/types.h>
    . B+ k3 C2 \8 S+ R) `
29. #include <linux/interrupt.h>
    + h* e+ V4 S& U' B" ]
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    * \& B( ~  l) e* B
34. #include <linux/dma-mapping.h>
    
35. 
    ( I9 F; O& Z( |6 _* n
36. #include <mach/memory.h>
    $ T2 Y/ g8 C/ K  D5 v
37. #include <mach/hardware.h>
    ! [% Z' `2 U" G1 Y! \8 x
38. #include <mach/irqs.h>
    $ K- F6 q; G6 a8 a, a" Y
39. #include <asm/hardware/edma.h>
    
40. 
    # P  W8 l7 G3 ?
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    " g1 o( i" I; u4 O
43. 
    2 t" o: t# v2 Y% Z- z* y2 i9 h) Z5 v
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
    / l* E" ^/ e: I
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    0 o( q# E; u2 C  _. t5 J* r5 q
53. 
    1 a( h& n. A. s
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    + x2 M' U' k6 t5 |; J
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    % W# }* u% g4 |) k$ G4 h; i
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    1 C4 k* `! Z! r2 U
62. static volatile int irqraised2 = 0;
    
63. 
    1 u! I* R: x4 g( k0 \
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ( l2 b  `  X+ R8 d/ g8 W8 r7 s# N
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    $ ?* \8 d5 k4 p" J5 L' T
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ; N/ [1 k# e7 w! F+ _
67. 
    8 L2 D% D/ a. M$ f& q
68. dma_addr_t dmaphyssrc1 = 0;
    1 m) h5 x/ {' q- U
69. dma_addr_t dmaphyssrc2 = 0;
    0 C. ^+ r& X) Y- s
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    4 ?( r/ F; l4 C! m! h3 f% i
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    - F( ^  {* T0 t" z# ]& Z
77. 
    4 E4 H' H+ n4 m* H- ^3 T- A! a! @
78. static int acnt = 512;
    % F- v- V7 o1 `) f6 X- r0 o6 }7 f
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    2 Z! S* W9 h! F$ E1 S8 G
83. module_param(bcnt, int, S_IRUGO);
    6 M3 D- e" ^- V7 o& N
84. module_param(ccnt, int, S_IRUGO);

复制代码

5 L" `' g; B8 J7 q1 M      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
$ ]7 X& W" ~& |" 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。
3 u+ R3 x: O8 ~# B; |* J2 n; ?+ m0 ]     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

8 i: N" _% I8 D  O4 j' w
: p: |" t! D4 U