OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   ( P  S7 a5 N+ r6 u
2. /*
   + U) H4 ]7 }) G8 m/ u
3. * edma_test.c
   2 `) m, t6 f/ S  L! N9 I! |& o
4. *
   
5. * brief  EDMA3 Test Application
   " w8 p  L1 R7 a( Q( ]2 U) D$ p
6. *
   
7. *   This file contains EDMA3 Test code.
   - j3 L' w' F  q8 U# L  z
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   9 k3 M& U% @$ B) f! t/ ~' P
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    $ K1 J+ \$ E1 c8 L, f" Y
11. *         TO CHANGE.
    % j+ b. j# `) |* @: z$ a& S
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
      ?) J/ s; \3 ~  g7 X3 I/ ~
15. * This program is free software; you can redistribute it and/or
    # K9 ?# k. Y8 h& D% A0 b6 k
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    # n. e6 p7 W) k
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ) I- L1 I" W3 s. P
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    & P# K8 @. a) }9 m, R
22. * GNU General Public License for more details.
    ' a" X" b) F: ?' Z; [8 Z
23. */
    1 B* m6 g8 y& v( ^7 V
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    7 c7 t! `6 P; t0 X9 J# g9 l
27. #include <linux/errno.h>
    8 n0 R4 E6 H1 |6 `* D
28. #include <linux/types.h>
    2 v. \( u) |: r3 a0 A# Q
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    & ^, {1 I7 r- u; j* |0 c0 L8 Z# y
31. #include <linux/moduleparam.h>
    - y4 I2 n6 M- w+ O
32. #include <linux/sysctl.h>
    ! m! X1 ?/ ~8 i+ ^, Z' w
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    - _9 X& j/ ~3 @
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    ! Q3 }8 K# Z' x! p( R
39. #include <asm/hardware/edma.h>
    
40. 
    5 I( I& a$ J0 V' @7 l& j
41. #undef EDMA3_DEBUG
    6 M! c7 X0 z6 m5 M8 m0 j" {
42. /*#define EDMA3_DEBUG*/
    
43. 
      R' U3 g0 o7 k+ w" R1 d: T
44. #ifdef EDMA3_DEBUG
    / m* I0 D( [3 Y
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    3 }- k6 I6 h) K$ _
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    % T# W( M1 w% i2 y1 }6 F
48. #else
    
49. #define DMA_PRINTK( x... )
    0 n% ?4 |5 C: J
50. #define DMA_FN_IN
    ( Q& O: M' T; [% K2 ^! C
51. #define DMA_FN_OUT
    5 \$ O8 ]8 A  X- h! v4 P
52. #endif
    
53. 
    7 N0 H9 j" t) ?1 B
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    " I/ r: T& ^6 u6 S: s: `/ k0 j
56. #define TCINTEN_SHIFT               20
    ) J' p; a- W- R1 I2 w
57. #define ITCINTEN_SHIFT              21
    - w( ]1 l/ N2 C: Q8 C% r
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ; C% Q8 x* M: C4 \
60. 
    7 {; B5 l/ q/ i. e. u
61. static volatile int irqraised1 = 0;
    # _6 ?* e5 J8 u
62. static volatile int irqraised2 = 0;
    $ {' y; Q$ K( P9 A2 O. U6 B+ g: [
63. 
    4 B9 ]$ \2 `) n5 k2 Q
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    % D8 m* z) E# j" M7 L2 O
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. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    0 q' e; o+ L- Q* W
72. 
    ' u( M2 s5 x2 F% ^
73. char *dmabufsrc1 = NULL;
    9 q" h3 P8 S5 o! ~) u
74. char *dmabufsrc2 = NULL;
    6 E6 N9 I9 E: ]% J9 W+ @
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    8 J4 e. |' p5 w4 T+ @7 }
77. 
    : v' W% n1 }3 g; z
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    0 d( W" B# d' V9 _
81. 
    3 I( j3 J. A0 Q
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    % M& z8 \7 c. l# B# d+ R
84. module_param(ccnt, int, S_IRUGO);

复制代码

* j+ c$ P. F( {4 n* [+ B7 z
$ d  e0 W- r& h9 c# z      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
& Y  r6 |' [& I. w  M1 larm-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。