OMAPL138如何在Linux下使用EDMA3驱动

yyj

5 m! N  U- g7 S6 R

1. [code]EDMA sample test application
   / C$ _+ X3 l# o9 s# n4 p
2. /*
   8 a% ?1 C6 D' ?: `/ z; Q
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   ( V# W8 f3 J3 |3 R4 Q1 U0 [
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   0 b$ U; C) ^' O: Y
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    & X; k; e* \& ]! `
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    ( O$ D( b% S2 ^  j- V
14. *
    1 M* l$ n. s) T  r% D
15. * This program is free software; you can redistribute it and/or
    ! ^4 s* b# n( ^- E8 ^- w3 W/ }% b
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    6 V9 u# |( L* J! w+ l; H  w
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    2 u+ ]2 `& s" i  A: `' z: H
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1 _6 U. ^( s1 n4 p5 x. G
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    6 V7 d$ e: _8 R4 v" K" O
27. #include <linux/errno.h>
      `$ U5 C1 j4 E
28. #include <linux/types.h>
    2 Z! I- A( K8 V4 O; y
29. #include <linux/interrupt.h>
    , R( S" J; T# ]. ^/ |! K! r) F- b
30. #include <asm/io.h>
    ; W* y& i* L9 s0 ^; `' i) s
31. #include <linux/moduleparam.h>
    9 e5 T' q2 A( D8 B
32. #include <linux/sysctl.h>
    - L  ?( O$ n8 x- }7 G" C
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    & ]7 p) P; t& g& X; x; ], q
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    ' `* ~) d% E8 h; U/ Z
39. #include <asm/hardware/edma.h>
    
40. 
    # K% ]3 t8 X2 t# w: a
41. #undef EDMA3_DEBUG
    / V0 B" l; ^" M" _
42. /*#define EDMA3_DEBUG*/
    
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__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    ) b1 G6 p3 q! x  i* Z! I- R6 m; o' O2 F: F
50. #define DMA_FN_IN
    # K# x) N6 X- s/ |
51. #define DMA_FN_OUT
      e/ b( z1 R: O2 J7 S9 r4 U6 E
52. #endif
    6 l; v$ R. L. Y3 z2 c3 r" x
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    " j: C* d: ]9 Q4 ^5 C9 h5 K
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    4 j7 P' w6 a+ \# m5 ?$ o
59. #define ITCCHEN_SHIFT               23
    
60. 
    & e9 J8 I2 P, x
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    ; i' U+ `$ D2 ~2 [2 V
63. 
      k& E4 s. R5 |$ Z  a6 W1 z
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : R) k" J$ A& r0 q% S
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);
    " {; W0 J, r* I
67. 
    5 E' [' v. Y$ g9 m0 A0 p* e& y: |
68. dma_addr_t dmaphyssrc1 = 0;
    ' T- U/ X7 j2 \' \' i
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    1 r% I" q( v( }/ \1 J6 z  D
77. 
    
78. static int acnt = 512;
    . H2 R2 O! @3 ^* u4 a
79. static int bcnt = 8;
    1 ?. [! O1 f3 T& y5 D
80. static int ccnt = 8;
    ( V3 k# K1 }+ j5 t  ^: m
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    & Y8 ^5 f' a4 b& T1 ^3 m+ Y
84. module_param(ccnt, int, S_IRUGO);

复制代码

' k- e6 _, u5 X) A7 l
      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。
4 J1 J4 d* [0 y; P     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

0 @( b& h, n" H9 c' D