OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   8 G' Z( }8 [& ~9 A& B
3. * edma_test.c
   ! `+ C9 @$ V1 A! P9 M1 m
4. *
   ! e. v) Y1 ]0 I, F
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   8 j- _/ V% a) e; ^; w8 _
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   6 F7 I& C$ b" T5 I9 q- }
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    / {( `: k! [0 g$ U6 [+ r
11. *         TO CHANGE.
    ( c& Q6 @8 p) ?. ~! ~! `& r! w( h
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    0 y& U, D: p4 k
16. * modify it under the terms of the GNU General Public License as
    9 K  q7 ^  Z+ [9 S0 U' O( g6 m! @
17. * published by the Free Software Foundation version 2.
    6 U6 A' t; w: q& D2 U  O
18. *
    6 e8 D4 l5 |: Y' b4 r
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    & X3 i8 a' K, ]
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    & q* N, ]+ F: n, {5 K
22. * GNU General Public License for more details.
    
23. */
    5 L# c, {3 w% C
24. 
    
25. #include <linux/module.h>
    - p& B/ q% R) z. L6 I
26. #include <linux/init.h>
    8 T8 z, n0 p% e, N
27. #include <linux/errno.h>
    3 b5 R8 J7 Y, i6 S
28. #include <linux/types.h>
    ( B3 F) H3 ]; G. ^
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    " v0 u& b- t. o! d9 u3 a/ O
32. #include <linux/sysctl.h>
    7 f$ X" `" D' T. I
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    ' U0 m, p% b7 G& A. _! Z& e  ^
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    6 J/ H( q+ d/ {6 e, `
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    & n3 L! _) H; j/ E$ _" N
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    5 t% H+ ]. n% |& v7 `$ F; N
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    " t5 s1 L8 j% q. ]" P( a
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    4 H' ?3 D+ a% `* f# |  Z5 F& D5 c1 c9 a
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    + r+ w( H; A( t) s9 S
48. #else
    
49. #define DMA_PRINTK( x... )
    + H9 v, [5 h% i
50. #define DMA_FN_IN
    $ X$ s- E2 Q% D5 a/ L: Q
51. #define DMA_FN_OUT
    
52. #endif
    8 H3 P7 m" x8 @2 |- \2 @' Y" P  v
53. 
    / U5 \4 v. |; m5 l  j/ t2 W4 b0 X! E
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    0 T# z& U5 t$ K7 d- A
57. #define ITCINTEN_SHIFT              21
    . }  U) }9 e+ ?/ k% [+ h
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    ' O3 r0 ?' A- F: J6 c1 E) x
60. 
    , t* h+ h) E6 j+ E
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    / q7 j' a+ w0 x% @9 c+ C
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);
    & r/ Q% C% w5 p, d; ~
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;
    ( L0 L1 |: i3 X) _4 [
70. dma_addr_t dmaphysdest1 = 0;
    2 l  Y9 E1 d, Z2 t, w
71. dma_addr_t dmaphysdest2 = 0;
    ' B6 ?  j9 ^6 b
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    & c6 Y3 K8 v. z! x+ b/ h9 h
76. char *dmabufdest2 = NULL;
    ' Y9 ^  {( E9 ~9 a
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    2 k3 {! u8 X$ I* B
80. static int ccnt = 8;
    0 t0 R4 k4 M% G1 a% P
81. 
    & T+ [" T7 M( n/ x5 o6 K
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    ! C- u  M2 K  Z$ _. h& S5 ]
84. module_param(ccnt, int, S_IRUGO);

复制代码

, f1 d" |0 `, e& Z- J( W! y. f
- I/ q' P- ~8 q, q0 e3 D7 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
0 b$ X( U5 @0 R4 \1 R. Aarm-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。
+ y  q0 H7 |2 R* @: H     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

: k3 M" |4 x  K% l1 }
: p2 w5 n, I' P# {8 x5 v. s