OMAPL138如何在Linux下使用EDMA3驱动

yyj

' C2 n, R3 ~9 E# K; G

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   8 C6 g' ~  x3 P  a7 [# J  c5 x) G$ Y
4. *
   ) H6 E1 a' q% M* n/ B
5. * brief  EDMA3 Test Application
     Y1 I5 b/ {; Y# C+ F6 Z
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   8 |. d/ M/ c, T$ b7 b
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   & g" O" ?+ @9 r# J2 Y* T
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    . s7 @- v5 [' v% H4 \; \% s, m
11. *         TO CHANGE.
    : a3 C. i6 b2 [. C2 o
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    # m2 `' c) d, ^4 o
14. *
    + g! v( y% o7 d% x# y1 Q2 a% 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
    9 t$ i/ \. F" z/ [5 A) X3 j6 `
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.
    
23. */
    / f2 O3 {* r+ h- U& y, s# w
24. 
    4 k) l$ g8 y# B  I' n$ E+ O
25. #include <linux/module.h>
    & N  @0 p$ e9 n, V: w
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    1 S: B% ]5 A1 \: N* X# U  i5 _
28. #include <linux/types.h>
    8 y, w% {, H; h! b+ b( Q0 E
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    - u2 d: I6 s& ?
33. #include <linux/mm.h>
    & B( R7 K6 B- l) t
34. #include <linux/dma-mapping.h>
    - ?8 ~2 h( k' L- Y  A1 q) R! {7 a
35. 
    ) a! ]2 x8 T! K& T
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    * `. _, Z: |" F$ V
38. #include <mach/irqs.h>
    " ?2 r3 p/ a; Q! o5 V5 t# K
39. #include <asm/hardware/edma.h>
    $ `+ M5 }% h7 ?- c  G
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    % H5 f! _# y( f4 M/ R
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__)
      c# s% d  g; D0 V6 u- S# @2 m8 y6 q
48. #else
    5 b/ j; A& V; _$ i+ z2 {0 ]
49. #define DMA_PRINTK( x... )
    # _- a1 T$ T6 v
50. #define DMA_FN_IN
    5 {2 l% V+ b! M  ?
51. #define DMA_FN_OUT
      E: m& S& V3 ]4 e+ M0 z
52. #endif
    
53. 
    6 M8 z; ]0 z8 J$ P
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    * v2 k$ C4 h# X, V. i3 u
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
      L+ }' p. N! }
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    8 ?) f% I" B, P, t! l" y5 C+ P
59. #define ITCCHEN_SHIFT               23
    
60. 
    8 c4 {9 H  U! R! m% i
61. static volatile int irqraised1 = 0;
    + w, ~5 ~; c$ W- E$ j
62. static volatile int irqraised2 = 0;
    ) J/ ^5 }$ \* X8 O: P% r- [4 a; t: P
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);
    & {" \0 a# D4 ?/ j, I
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;
      L. l+ G0 t1 h* I  H
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    " Z  z+ ^# O% P5 F" k; G+ ]
72. 
    
73. char *dmabufsrc1 = NULL;
    3 c( g$ J2 v5 j9 k
74. char *dmabufsrc2 = NULL;
    ' Q* |. [( e4 e+ q
75. char *dmabufdest1 = NULL;
    7 H; z, }* t6 }- g# L
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    $ x- L1 D! X5 M  {
79. static int bcnt = 8;
    % K3 y  J( X' @) b: ~5 X/ A
80. static int ccnt = 8;
    6 U2 u# K  f  t: O, I2 S* `
81. 
    
82. module_param(acnt, int, S_IRUGO);
    3 Q7 [: v6 O7 O2 X) L$ _2 [2 l1 ^
83. module_param(bcnt, int, S_IRUGO);
    2 a+ t& s8 x$ F+ ^) M* ?9 R& `
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
( J) F' [1 P/ {: Y6 Karm-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。
: g% K! v! l, }8 H7 n. Q- `4 H     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。