OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   6 ?9 `& @& X0 H
2. /*
   
3. * edma_test.c
   
4. *
   ! r% k: O7 W& {; ]
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   # t: [; K! `1 j% H
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
    
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    / M5 @* b& m0 J+ u
14. *
    ) p5 F; s" Y( @& b, u& P
15. * This program is free software; you can redistribute it and/or
    + f: ~/ x, a) l- L5 o; Q+ a4 c
16. * modify it under the terms of the GNU General Public License as
    7 v/ _9 s2 n) }# z; S3 X6 ]6 L8 ~
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    . t) ~4 \0 I7 p" y+ |
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1 `/ a8 V5 }+ M8 [, A6 C% M8 _4 f
22. * GNU General Public License for more details.
    & @# ]- L; ^( ~: X3 @; i0 }/ u" C/ Y
23. */
    : f) \1 [" K) Y8 U5 @
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    4 a8 K7 x) y1 A# c
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    / \2 T$ y. I" B8 F/ L
29. #include <linux/interrupt.h>
    5 V8 k/ k2 Y3 m) F2 x- y8 E, u# R
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    / z' \9 q& I1 N2 u0 g) {5 y$ |. W
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    # u2 k/ C4 O" ?  Z) s( }3 O+ n0 X
35. 
    . \4 [$ M2 i- c- V7 ^" z: A# Q
36. #include <mach/memory.h>
    5 J  F8 e6 O- W0 p4 E' y) K
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    . g) i& k  f6 N8 ?( l# g
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__)
    5 @9 K" H  b8 ]
48. #else
    
49. #define DMA_PRINTK( x... )
    # o' O3 J, R, d& V, q$ [
50. #define DMA_FN_IN
    7 }/ V2 _" f8 Z" ]2 H8 ^
51. #define DMA_FN_OUT
    ) G6 g" l' t  \  ?! s; V
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    7 z" r! |( K& P5 ~, V4 M8 Y
55. #define STATIC_SHIFT                3
    # n# ]0 Y3 v5 g' F9 L- R; n, d+ ?  X
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    : l, i- r' ~: A- L9 J' ?/ s0 C  c/ y
60. 
    
61. static volatile int irqraised1 = 0;
    2 c" }1 e$ A. [" H/ T; k+ ?( m3 i& W
62. static volatile int irqraised2 = 0;
    * K$ ^9 }# Y8 v% o3 @$ y& H3 `
63. 
    1 }, u3 t) W0 ^$ q; |; Y8 l2 X: t
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);
    + l  }% l# i$ ~
67. 
    : K! m5 \; G+ K
68. dma_addr_t dmaphyssrc1 = 0;
    ! r2 o  H. J  o0 A
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    $ {9 A6 F# p  f; v$ s. W0 E
71. dma_addr_t dmaphysdest2 = 0;
    ) J. H9 v4 t- y: b6 K
72. 
    ! d# u) i0 k2 G* G, u1 ~; b
73. char *dmabufsrc1 = NULL;
    7 v6 W* M- H; w+ C7 a
74. char *dmabufsrc2 = NULL;
    ' r# j/ [, J% L4 ^  v) T8 n* l0 G( b
75. char *dmabufdest1 = NULL;
    ! K; ?3 z' x3 X# G% z, L3 P
76. char *dmabufdest2 = NULL;
    * y1 J1 Z' X' l7 z6 T
77. 
    ) h& R3 i) ~4 N7 \; @. u
78. static int acnt = 512;
    5 z3 c% k9 V3 H0 S5 q9 n$ N
79. static int bcnt = 8;
    6 u: _5 X* `3 k' }* G* y5 b5 |1 @! p
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ( D8 d0 s9 f, B: n( z+ o+ I
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

      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。
2 \6 N/ r' j& V& u     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
, C0 m& b% q2 y, s! r$ l

! E; [1 [5 b: j) j