OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   6 a# ~  d7 e/ }! w  b6 V
5. * brief  EDMA3 Test Application
   . W6 @8 ^; X9 c: M' v2 R
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
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
    & S/ x6 c3 H/ d; [2 {
11. *         TO CHANGE.
    5 a' P$ z8 p3 x% H8 ~2 T+ i" ]
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    % g$ T- ]( o3 `5 W+ F
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
    2 R, z! f, d) H4 C9 y$ ?7 g3 |
17. * published by the Free Software Foundation version 2.
    0 Z% m- ^+ Q  H) Y& M( L: 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
    ( r, S& i6 _% [" K$ _
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    ! `3 F7 A! y: Q! B, n
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    + u/ F! ?: W, `2 @+ A7 X: o9 l' Q
27. #include <linux/errno.h>
    7 D  a- B* U. g  x
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    * N1 N. |7 E2 N' ?8 S- M; d
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    3 a: d: i' q) U$ v; g
32. #include <linux/sysctl.h>
    / {$ G! b" Q& g4 \8 ?% e
33. #include <linux/mm.h>
    ( P& M6 Y* z5 G
34. #include <linux/dma-mapping.h>
    
35. 
    % q9 j4 C3 \! L: k+ W0 t1 j5 A
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    % v. m8 X' r9 D2 Q+ D1 V
38. #include <mach/irqs.h>
    ( }- P, m6 C( E$ ]  k7 R
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    / q% @7 ~/ H* m9 y
43. 
    
44. #ifdef EDMA3_DEBUG
    0 J9 _% _4 Q" m1 I6 M
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 O3 K3 N- Z4 t% u7 \
48. #else
    
49. #define DMA_PRINTK( x... )
    2 q% I2 D( u3 j' d
50. #define DMA_FN_IN
    , `5 ]7 u9 B  g9 M
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    ( {) M- J6 U3 M) \  A7 _
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    9 W" f/ V/ t6 F
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ( L( L3 ?* I4 A8 _* t4 }* V; ^8 f
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    ; K7 k  h/ Y2 R# m9 @( Q
62. static volatile int irqraised2 = 0;
    7 m0 Y, C) A% p9 a  Y
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' C8 ^/ S6 c) D( ?) D6 ~
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);
    $ I) a( J0 l8 j4 Y
67. 
    . Z2 u) \- b1 k+ F% o1 @
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ) `, D0 R7 ~! ~+ ?- p4 P: @7 f- V
72. 
    ; Q8 v0 ^  S! _: z8 {* W' W5 E
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    1 A6 ~0 p$ g: L7 u" x, z% a; R. ^& B2 A
76. char *dmabufdest2 = NULL;
    * }; `4 Z* ~- O0 c4 k
77. 
    8 x2 E' [; Q8 ]2 `/ I
78. static int acnt = 512;
    $ ^6 F$ Y9 y4 d& m
79. static int bcnt = 8;
    5 s) u* B* H6 [9 Z$ `% _) t
80. static int ccnt = 8;
    
81. 
    1 k3 \% f  B# ]
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

1 B/ ~( Z5 a) \* 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。
     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 k) E: l. F+ d# o/ q- G) _" n
4 u5 X3 Y" l/ y: o1 ~
3 P6 h; Z! W: l9 T4 f4 y# h