OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ( \* o4 g' T% l1 G9 j6 c) E* t
2. /*
   
3. * edma_test.c
   
4. *
   1 @* b& L4 r! A6 i) S
5. * brief  EDMA3 Test Application
   0 E! p6 ?) J& E& I
6. *
   
7. *   This file contains EDMA3 Test code.
   - P  d- V& K8 x$ o3 |8 k+ L
8. *
   5 h$ c% m! C: |9 G5 Y! t! v: 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 b4 q5 M/ ~; P: o
11. *         TO CHANGE.
    
12. *
    ; t4 Q7 z# z7 W
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    ( L8 T; H+ |6 M. b" X
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    6 h8 E6 O  B* d8 U# [: H: z
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
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.
    , y9 a1 m3 g* y8 r7 r& q8 L% U& _, x
23. */
    ' i. J' ?8 N3 a( P5 X2 h3 {; E
24. 
    $ O6 O6 D; f2 @! R, N
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    ; j' ~/ c5 \4 H( e8 ]
28. #include <linux/types.h>
    : G1 v6 \' ~/ Z) \
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    - j# n' e) A# k1 B* s
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ) u% V5 n  v4 I4 J6 S
33. #include <linux/mm.h>
    - x3 z3 N$ p- H1 X9 _' L$ @- I
34. #include <linux/dma-mapping.h>
    
35. 
    8 n$ @6 k0 `, s1 p0 k
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    0 o) N+ d, A" R) m
42. /*#define EDMA3_DEBUG*/
    * S7 t. B! P6 M# M0 c/ h4 W1 I
43. 
    
44. #ifdef EDMA3_DEBUG
      ~/ y2 q* u. u4 U4 e* y! ?
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    - U/ `0 m+ O. M% h% [1 _: T
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    * N. u) W" V  L( h7 x( U+ q6 M
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    9 m$ `" \& N: H, d, y/ F7 b( X
52. #endif
    
53. 
    ) c& t( n- ]2 F0 W( y9 o" P+ a
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    9 b) U7 Y) }" M, S5 x
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    6 `! z8 J' {0 b2 R
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ) w. n0 |6 n/ Q0 ^
60. 
    9 u4 t0 Q, @1 u2 \2 g5 [
61. static volatile int irqraised1 = 0;
    3 y" @8 b. n9 e: W7 w9 y2 v
62. static volatile int irqraised2 = 0;
    
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ! L* Z! g8 H! H- Q
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);
    $ _9 E8 W4 ^1 e) g: s" O
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    , P" U; D: ?2 ]" Z
69. dma_addr_t dmaphyssrc2 = 0;
    ' E) `  l4 \) u- B# w) T
70. dma_addr_t dmaphysdest1 = 0;
    / N  q- a  \9 P$ N/ y
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    # L2 Q2 y2 q/ Y) V' v0 Y0 \, O
74. char *dmabufsrc2 = NULL;
    $ w2 |# G# W" P; ~
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    6 l4 ]  ^) k1 J8 e4 k# T
77. 
    * y2 ]6 Y% z8 _1 d
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    " M4 w$ y) `/ w0 H- @
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ( D: }. o1 _4 m2 U
83. module_param(bcnt, int, S_IRUGO);
    ( `( M6 c! O7 `8 ~6 o8 q
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。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。


6 X, X' H; Z# P7 \1 |