OMAPL138如何在Linux下使用EDMA3驱动

yyj

3 k. U! P' y+ ^( B" }: j1 ^' s

1. [code]EDMA sample test application
   7 j% [4 e2 n- y5 S7 R' u7 B
2. /*
   
3. * edma_test.c
   
4. *
   . z. F' l/ y( Y  Z
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   7 h3 b! R3 P4 t2 Q8 \  q
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
    - n4 j& B% i! A" }. N. z
11. *         TO CHANGE.
    9 f" K! v' ?- S, B
12. *
    9 G. p1 G& H, l: |. E
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
      \6 w) E# F% U* N
14. *
    5 g! B$ I4 \3 W* Y& Z7 ?' N
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
    
17. * published by the Free Software Foundation version 2.
    
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
    7 u0 S7 F# M& o1 I; a* D7 i
22. * GNU General Public License for more details.
    
23. */
    
24. 
    % W8 x. R& b0 ^# @. p1 D- w0 O
25. #include <linux/module.h>
    ( s1 Y+ \  @/ ]! H" a7 |/ J
26. #include <linux/init.h>
    ( g: K. e; i. p  v" E* L8 T# J# d# ?
27. #include <linux/errno.h>
    6 _* L9 G8 g0 p" P, U
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    8 J+ m$ S/ O; W; p$ ~* p3 Q
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    6 H4 M: Z/ q& t2 x# P
32. #include <linux/sysctl.h>
    ( ^6 q9 w' D' l( F/ p
33. #include <linux/mm.h>
    ( c7 H0 _: c9 P4 f. t
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    3 Y. U$ {* b+ w0 X) O# p
37. #include <mach/hardware.h>
    9 v' {8 d/ y" _) J3 H$ c% j
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    - b/ ^& z2 e5 P; B9 ~3 r( @+ ~
41. #undef EDMA3_DEBUG
    
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__)
    ' l. X. n, ]6 h. F
48. #else
    & t1 y3 V% w6 t0 ^  x
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    5 Z' n8 N. X* |0 E) `4 n8 h
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ( X: W8 Z+ S; {; r0 Z! y3 M
57. #define ITCINTEN_SHIFT              21
    1 l4 I  z  ~! Z3 `
58. #define TCCHEN_SHIFT                22
    0 u& G3 U! p: ^8 F) Y0 X9 F  r
59. #define ITCCHEN_SHIFT               23
    1 V+ {! X4 M) n1 j0 y' N
60. 
    5 f3 a' X1 J- [2 ?2 v1 ~* A1 E. r8 r
61. static volatile int irqraised1 = 0;
      `) L& E  U/ I; l  _! d1 b
62. static volatile int irqraised2 = 0;
    * @5 v3 ?; m5 r; p. q
63. 
    3 y7 s9 J# d8 w. `! v* \1 a: f
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ( H7 g6 n" G0 Q1 O
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    * z8 ?) n/ y& Q
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;
    1 A- k. Y  r! q( r1 s, G% u5 g0 P
69. dma_addr_t dmaphyssrc2 = 0;
    1 K4 \/ i' i( |6 r
70. dma_addr_t dmaphysdest1 = 0;
    8 |. F  i" B# E9 L8 ^: g* j
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    ; ]  V3 h, w7 s2 {
74. char *dmabufsrc2 = NULL;
      Z2 s! H6 V& K2 m* b; X$ H
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    ! Q& h( p$ K% J0 ^+ W
77. 
    # [, F' a9 I$ m' ^! Z- G3 i
78. static int acnt = 512;
    ' Y% p/ j0 w- C. O9 f: l
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    4 z0 K4 X( m- K9 d9 ?$ \
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    & ^2 Z4 I) G8 a4 }/ L7 X
84. module_param(ccnt, int, S_IRUGO);

复制代码

$ U+ L7 i( t0 p6 b  v7 C9 q      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。

4 e8 }: e* w# `) h8 Y. S* Q6 t