OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   ) _' g6 F0 K( V2 ?
3. * edma_test.c
   7 G" m7 Z* g$ L  k& O
4. *
   
5. * brief  EDMA3 Test Application
   5 ], j9 b4 m- ~$ c' |
6. *
   
7. *   This file contains EDMA3 Test code.
   2 ^! }7 g1 s# g6 g! {! Z9 I- y$ }0 O- K! Q
8. *
   : c; R% h7 i9 `1 S
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   # r0 ?% W0 t( q1 a& \& x" A# ]
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    . j/ I/ ?6 U8 T
12. *
    # O1 X& `7 z7 _2 R2 S+ d* j
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    # D; j: X: `7 {# |2 j& y
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.
    ) M+ W/ v1 C. e# X9 i9 {1 n& J
18. *
      F& i* V( F: q& [! G: d1 N
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    3 ~  O0 k* I5 J. _% o1 k+ ^1 h- W  J
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    ' Z% C5 U3 ]1 v  `  X; Q' a' `0 n) f
23. */
    
24. 
    & [2 O& p$ ~; u5 D8 d% l2 X+ n
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    / v7 r9 L& X& p& w8 q
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    $ h9 `# M' N: K
30. #include <asm/io.h>
    . B  P+ I$ L9 U7 t, j/ G* U8 u
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    , ?2 E$ A6 f: B8 a+ ^) v
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    0 `1 y* _+ d9 u2 t
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    - E* `( U: d0 ]6 U5 {
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    # v. j2 v6 O$ P& [0 Y" \( ~" [! [7 I
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    5 }- |0 x/ D" @1 ^$ u' ^6 |
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    1 l' _* Q6 Z' u4 t
49. #define DMA_PRINTK( x... )
    ( T/ O8 v( {# t! {; `& T( h
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    - E, L, |9 b) o! C2 |8 b
52. #endif
    - Z) r# V4 U  g' a
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    # x5 M- t- T' K% p3 K
56. #define TCINTEN_SHIFT               20
    9 N. g2 c7 n% d' s" g4 x; o' s
57. #define ITCINTEN_SHIFT              21
    * M& |& a- r/ q9 T0 a$ \" o
58. #define TCCHEN_SHIFT                22
    & P& I1 U+ M4 N1 d* m( O
59. #define ITCCHEN_SHIFT               23
    
60. 
    ( {  G. e5 T' b) Q$ C4 ^5 S
61. static volatile int irqraised1 = 0;
    % S2 j) V$ P" K7 M
62. static volatile int irqraised2 = 0;
    
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);
    
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;
    ! }  u4 X; I! c
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    * |# |9 t0 d' E( [! E  q% n
73. char *dmabufsrc1 = NULL;
    . U+ e7 n( c2 p- o( N9 w, t% O
74. char *dmabufsrc2 = NULL;
    9 x) d) q) q) u. N" j
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ' c# c6 P+ b3 g8 t
80. static int ccnt = 8;
    * |6 u/ o6 v8 M5 q4 o/ c
81. 
      E) U3 i: d4 X3 E2 f! J
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

3 i( r: W% u5 \6 u- Z6 M* m      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
# M- Z" O' `1 Z9 D+ n2 Iarm-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。

$ x4 k& d. r- ~( w' B3 T( M
. P# c0 f# d8 f+ D