OMAPL138如何在Linux下使用EDMA3驱动

yyj

1 Y) N$ P% j! N7 {8 ~! R

1. [code]EDMA sample test application
   % ^! n8 w) W/ o) K8 E
2. /*
   
3. * edma_test.c
   
4. *
   * [% P( @, c- z# p  x& S
5. * brief  EDMA3 Test Application
   
6. *
   
7. *   This file contains EDMA3 Test code.
   ! \; R- e: r8 c5 B
8. *
   + Z" D5 C7 G/ U% f/ M
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
      X5 f6 h7 z1 s9 f. B3 c
11. *         TO CHANGE.
    & F6 R. R; {- s  m
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    : U. N% K1 k+ L5 t6 S+ {; ^8 t
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.
    1 f% V# r7 f1 ]; e! K+ X
18. *
    2 H/ Y! z0 l6 [0 U/ o0 R) Z
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ! @. x( R6 V. `1 l3 Z! L" ]0 v
20. * kind, whether express or implied; without even the implied warranty
    7 |, d" ^/ p+ z  ~* G7 ~% r
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    % }, ]( [- e& v8 {
22. * GNU General Public License for more details.
    " f0 k1 S' t, s( a' |# l6 y
23. */
    ( p+ {$ O6 d' o5 Z4 R# a8 K# Q" \* j
24. 
    
25. #include <linux/module.h>
    4 g; s3 ^/ T" Q
26. #include <linux/init.h>
    ( _, i* z& K; x/ v9 w6 P3 O
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    * P' J/ o! ?$ f/ W6 G* H* O0 g  H" ~
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    1 H* g/ n: V  |1 [% n) H$ @. H: D3 @
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    ; j5 ~* O5 x: @$ y8 ]  N* I
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
      ~: S* x8 }; `: n
35. 
    ( {% s1 [1 Y- k5 p. u2 A! c0 P
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    1 K9 M3 _9 ^  M; h8 Y$ \
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    ' R& q) p6 e: i" u
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)
    1 J; v% k. R! D. u' @
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    $ @5 @1 I1 Q7 \9 s* q
52. #endif
    ) t/ r  V: d  _2 a. d
53. 
    $ r: s" B4 i. C/ |6 }- V
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    9 g  d9 [. r, a7 ~
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    2 H& E# r. G6 X; X& S
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    2 _. i" D; g& E3 O; n' |3 [; V8 o
62. static volatile int irqraised2 = 0;
    * a: Y5 C& j# x  _: s
63. 
    - f+ V- d$ }. {+ z$ }! }
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. 
    6 |$ h$ u) J/ P
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    & k& f: Q1 s) |! J8 Y7 U
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    - _8 ?  E3 W6 {! N) M/ g  S
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
      S. D  r) e( J* i6 v
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ; ?  U' b" V; `1 L
80. static int ccnt = 8;
    
81. 
    * @- O8 l, n0 S/ z; Z
82. module_param(acnt, int, S_IRUGO);
    , b7 Q0 T' W' g. B
83. module_param(bcnt, int, S_IRUGO);
    ( D  v9 F* W" a3 k% y
84. module_param(ccnt, int, S_IRUGO);

复制代码

; T' f8 s9 d0 Y$ L" H$ Y$ k
5 ~# c! P7 ~- b9 H$ c3 ^+ b      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
8 G* B7 [& H& S7 P% C* M* 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。
) X4 a1 \# d, u2 ]3 e3 R5 i! w4 g     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。