OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   9 ~) y4 G8 L8 }7 V6 o
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   3 _, b" Z1 \7 y; p
6. *
   # X3 d. S- l  `! H
7. *   This file contains EDMA3 Test code.
   ) p! O* `8 V5 w* V
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   2 k+ D8 J, c/ j5 j) n
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/
    * I+ W% N7 v! S, G! o
14. *
    
15. * This program is free software; you can redistribute it and/or
    - }; U5 k! ~* Y- P4 M$ m" z! n
16. * modify it under the terms of the GNU General Public License as
    1 B' R# U7 _8 G
17. * published by the Free Software Foundation version 2.
    & h8 Y: W4 {( a) ]4 k' F
18. *
    0 q; i' ^% e: h/ r8 I. N
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    ; b( p+ l0 L+ K' {& [3 q# z; q" o
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    $ D# Z5 y4 A9 @2 c5 K& m
22. * GNU General Public License for more details.
    
23. */
    
24. 
    / N# L9 k, ]- }5 \  V1 L7 F( \+ W
25. #include <linux/module.h>
    8 A+ W1 K: ^+ k0 m  q. D2 \& D
26. #include <linux/init.h>
      `  A6 j9 `. c# I
27. #include <linux/errno.h>
    0 W8 L, {5 m0 \; V( f7 z6 L# Y& G
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    + d9 b4 |! X/ j1 [  q" N! {
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    " h) @6 f0 l$ m5 s
34. #include <linux/dma-mapping.h>
      p! g3 ]4 E1 q3 B% j
35. 
    4 {- x5 g  [/ {& D$ P( B$ g5 I! V
36. #include <mach/memory.h>
    ! Q* d4 u" J" N: }2 Q. A- i6 s& Q
37. #include <mach/hardware.h>
    5 l5 B* u9 @4 X2 |/ P# ]
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    $ h; `! J; t- Z* X" ?( m
40. 
    ; Z) X. _- ~* Z+ K1 G# e0 ?
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)
    $ m% l4 S2 e/ n2 r0 f, R
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ( {% `# I; N0 m* p0 _1 g% n
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    1 h% V. {, q/ K$ z! i
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
      r% k( W' m' n- J. C; H
52. #endif
    2 w8 z" W2 I9 Y4 }- M
53. 
    + x2 Y0 q2 {1 k3 }
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    * h3 E7 T  ^% O, o3 p7 G4 s" }
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    , q/ T8 X, V: d+ Q& }6 h8 _
57. #define ITCINTEN_SHIFT              21
    ( K: z" h4 d0 l% R( b. j) X
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    : |$ A2 Z: ]$ f3 W( ?& S: a7 Q5 W
60. 
    
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    . ?+ C1 {9 u+ Z& Z- f
63. 
    # R0 F/ e$ T$ Z
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    3 f% o' O$ @/ M6 r! {- b
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    8 |- J9 ^: k9 b2 V
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;
    + R+ ]- P1 L1 |! Y2 A( @
69. dma_addr_t dmaphyssrc2 = 0;
    # Z, T% r3 {3 `" w$ f& p* ]* w- C
70. dma_addr_t dmaphysdest1 = 0;
    9 y9 |8 Y/ F$ f$ N4 r5 Z
71. dma_addr_t dmaphysdest2 = 0;
    " t: z; h' x7 e& i# u0 P1 r
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    " q; o+ d7 Q/ y0 J& K
75. char *dmabufdest1 = NULL;
    3 a' ^; G" F; z
76. char *dmabufdest2 = NULL;
    6 T2 v: r1 v8 L, G. X! W: r- X
77. 
    
78. static int acnt = 512;
    ) V8 \5 z. G/ A" ~/ o; }. j, J
79. static int bcnt = 8;
    - X) w0 j% d1 s0 u, G5 L- f3 L
80. static int ccnt = 8;
    
81. 
    ! o3 a! @- A0 _5 c5 q
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    6 W  ~! O9 U- o  d
84. module_param(ccnt, int, S_IRUGO);

复制代码

7 H; R; n; |/ U% L% }1 ^      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。
% k" l7 c' X6 W8 ~  m  r+ `; q