OMAPL138如何在Linux下使用EDMA3驱动

yyj

5 J" b' x8 ^9 I5 z) Y/ h

1. [code]EDMA sample test application
   
2. /*
   ' o, M8 }1 o9 v8 ?
3. * edma_test.c
   % l: T8 R) `) P7 }
4. *
   0 ]6 z& W9 z0 a; J6 z1 D
5. * brief  EDMA3 Test Application
   6 L. Z* T2 u8 B
6. *
   # X+ m1 b: H6 m
7. *   This file contains EDMA3 Test code.
   
8. *
   8 }) c+ q( U  ?+ o( F2 y
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   : m( b& s% R& u/ t5 a
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    " t7 g+ G4 {7 E0 f6 h( h! e9 u
14. *
      e' Z: G, u* o" R
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
    6 i8 n- V$ q5 f: S$ x: X; t
17. * published by the Free Software Foundation version 2.
    9 S( I! y4 G9 R7 O0 u) v6 D5 O
18. *
    9 \8 w! ]/ L8 C, e, w* e. `0 \
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ' F1 L$ [2 O- {9 `- s
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    5 o0 V, Y0 o& o8 g' g9 L( V
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    5 w6 i9 }6 o9 K6 w
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    . l0 ?% Z5 j2 u3 T4 i  m% S
28. #include <linux/types.h>
    0 I* P5 A$ w, I7 T$ w% ?3 h
29. #include <linux/interrupt.h>
    ; f% t  F5 G  S1 Y2 t7 w( ]; B' x% C
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    : a( r, o' z) I
33. #include <linux/mm.h>
    , }  x: @4 y' J+ V
34. #include <linux/dma-mapping.h>
    
35. 
    2 S% I' q5 \* `+ O/ e6 D
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    : p9 H, I. Q/ j9 ^( e; r
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    . K2 l9 @, f% O
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    ' g: t+ Z5 v+ `2 G; C
43. 
    
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__)
    ) E4 G1 z* @( w7 P
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    - [# k! e" U# T! g3 j% m
48. #else
    9 w2 {: d" Y/ i% P6 [3 O4 A! b
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    4 {# M3 A0 L8 G' C, h, X1 z
52. #endif
    ; N% d* P  P1 _
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    3 |, b( n2 W" h
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    , F! k) [1 g; w" C+ j  ^
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
      m7 A2 x# H% F, x. ?: T8 ^
63. 
    
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. 
    ' C, Z0 D3 b: b+ k4 M1 K4 e+ ]/ q
68. dma_addr_t dmaphyssrc1 = 0;
    & F' i. y0 }/ c+ `: t+ t8 Y
69. dma_addr_t dmaphyssrc2 = 0;
    2 h$ D/ ]/ g7 y5 B. |) W# O- i% S
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    , G/ J* _$ J" g5 @- d/ Q
72. 
    
73. char *dmabufsrc1 = NULL;
    - A! K& S2 D! S' a+ U* B
74. char *dmabufsrc2 = NULL;
    6 K+ E! |% M: d& o* u, ?* G
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    + }2 D+ @& C3 L
77. 
    " r& B8 k- U1 j: m4 X
78. static int acnt = 512;
    # K1 j8 C2 B( A3 G# W
79. static int bcnt = 8;
    5 x3 z( O* s4 l- G( S
80. static int ccnt = 8;
    ( |6 Q( g( z4 m' ]( o
81. 
    
82. module_param(acnt, int, S_IRUGO);
    & K$ u) c; K8 M, ~9 X' v  r$ b
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

; C/ b+ P- Y) d* }0 ~- H2 ]0 H      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 R6 n$ u, y6 S0 X1 _! v$ G     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。