OMAPL138如何在Linux下使用EDMA3驱动

yyj

2 M/ {7 }+ I8 F6 T# Z. S0 {

1. [code]EDMA sample test application
   - H2 \* m# T' N: a
2. /*
   
3. * edma_test.c
   8 u9 b, {! _* u, O! j
4. *
   
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   - T6 e) ]" O+ U# l: k$ m
8. *
   ; p8 J& F" w& n
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/
    0 ~& Z5 j- P3 Q9 A
14. *
    
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.
    ; T- v7 \! E. w/ Z; g3 |! B* P
18. *
    - k: M; ^' O* v5 }6 ?0 \  B; ]; _" I
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    6 ^/ ^* b0 I- j1 q+ V3 g3 ~
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    , K1 c" v" @3 Z! {
22. * GNU General Public License for more details.
    
23. */
    
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    . `8 S4 f8 d+ y6 t$ \
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    ' _  u7 N/ m) m5 h: W5 r: H' E, T- w9 Q
31. #include <linux/moduleparam.h>
    : L) ~" a7 @5 B0 W/ ~) Y3 ?7 M
32. #include <linux/sysctl.h>
    / \+ |5 ]1 H5 U  i& I
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    3 k* A' l/ n( _4 ~
36. #include <mach/memory.h>
    0 Z% r# X  A  n) V' L
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    ! \+ t% [1 N& \& P9 e3 d
39. #include <asm/hardware/edma.h>
    " j& q( U* g& g* P+ b( _! S
40. 
    
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)
    % V0 o, D4 `& E; Q7 P
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    9 M/ ^' {( J  B2 |# n
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    4 x; A6 g7 R6 n% a' r
48. #else
    ; Y2 Y1 N. ~% |: i
49. #define DMA_PRINTK( x... )
    & `- S: G; F+ b& ^
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    ! V& J5 @, x/ Q$ T4 s( m8 v7 x
53. 
    9 Y% n- I+ c# E( ^7 G( d$ ^
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    $ n$ J# C& t$ {2 [* _! d, T# ?
55. #define STATIC_SHIFT                3
    0 @2 s: H# }0 A+ ~
56. #define TCINTEN_SHIFT               20
    & f& [0 f$ p6 S; W9 T  q/ \
57. #define ITCINTEN_SHIFT              21
    # m$ ?# ~* W" v5 x' x; [1 ]* V0 q
58. #define TCCHEN_SHIFT                22
    + H( _5 O' _# J( _
59. #define ITCCHEN_SHIFT               23
    4 N6 M. |9 t8 z" `
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    
63. 
    * c+ y' P! }; Z, x3 M+ l
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    1 h' d- M- }9 S+ L+ a% c
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    & v+ o1 \. T. `' p" I
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ! Z3 U/ U  R8 N( H
67. 
    , g9 H1 s( o7 n9 s$ R
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    $ F+ V; c+ r) a7 a  c2 n' _
71. dma_addr_t dmaphysdest2 = 0;
    ! O; i, a7 v, W$ }
72. 
    & }) Y# O, W. y  x) p
73. char *dmabufsrc1 = NULL;
    $ h  s0 s3 x, H4 T" D
74. char *dmabufsrc2 = NULL;
    + U5 G5 S8 N2 K! ?
75. char *dmabufdest1 = NULL;
    3 k0 J6 W- Y3 C  }+ n
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    + R* \& z' t& X+ o0 F
82. module_param(acnt, int, S_IRUGO);
    ) N% H* Q6 @4 W+ g
83. module_param(bcnt, int, S_IRUGO);
    $ }+ R& G- A" u/ Y% A/ M& q, Q
84. module_param(ccnt, int, S_IRUGO);

复制代码

; c) V( c3 n( T) K2 D8 H% ?$ J
; _, J; ?& m- m7 r$ N- W      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。
2 t, X8 C: i+ `* Z. P. ~: y