OMAPL138如何在Linux下使用EDMA3驱动

yyj

* u3 ~5 ]0 y8 N

1. [code]EDMA sample test application
   * S- \/ c- L4 n/ o* c' C' {/ E, s
2. /*
   
3. * edma_test.c
   ! }. V: T; ]( P1 x5 M
4. *
   
5. * brief  EDMA3 Test Application
   * X# M. m* `0 [4 _
6. *
   # x2 q8 o* b  A9 e3 c
7. *   This file contains EDMA3 Test code.
   $ }/ z# |& Y1 u# M3 o: ^2 _- k
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   * c- e; @6 S; a2 O# _! x# `8 a+ q
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    0 m3 {( g6 c' I
12. *
    5 l3 o8 K2 ]& I
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
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
      l" P+ m4 U# F; x/ p3 T3 q7 T) y
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    % {2 I1 J3 b3 Y
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    6 ]3 R8 o  v1 {% y
23. */
    4 E: M) h2 w( s- L0 L
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    # C0 L, S) }+ r. \* Y7 W0 [0 G
27. #include <linux/errno.h>
    ! Z% V" W% L& V0 X" b
28. #include <linux/types.h>
    : X2 z, e5 }1 s6 }0 x* B1 ?) d
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    # y/ y" g1 B! v
32. #include <linux/sysctl.h>
    2 N/ k1 k5 b  W, u/ u
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    5 ^7 W: [2 n, ?3 C5 r; i7 Q
35. 
    ( n0 ^4 i  g' `3 d" @
36. #include <mach/memory.h>
    ; N  S4 H6 q- @, s
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    1 j/ R- v" ^4 P6 z, i
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    , v9 K1 L; y1 M; h% v) P
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    2 m0 d# S5 @6 k# F) L
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    5 T9 l/ N' @6 C6 c
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    $ Q+ `. ^: f2 G
52. #endif
    
53. 
    % ]6 e3 a+ u7 `. S( K
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    " Z: s5 Z5 e5 k) C) e
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    $ A8 p) \' E+ {% y
57. #define ITCINTEN_SHIFT              21
    " o6 C! U3 |7 U& `! U% i
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    8 c1 x7 F! G; p4 `7 o1 ?' S3 V3 `
61. static volatile int irqraised1 = 0;
    # x% l8 P2 F1 }1 B
62. static volatile int irqraised2 = 0;
    " q0 W, w0 B. t6 [
63. 
    ' r6 D# @; h5 _" t5 I9 }. l
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    % C! E1 I# ]/ A( {, l4 @
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);
    8 L9 a7 C  ~& j" h( C
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    4 U- L3 v1 @+ B" Y+ [
69. dma_addr_t dmaphyssrc2 = 0;
    - q2 X" R4 e$ m  F7 ~
70. dma_addr_t dmaphysdest1 = 0;
    ) E" o" V: O, L& p/ @+ Y" D
71. dma_addr_t dmaphysdest2 = 0;
    6 V; t% K" \* G5 V, Z: y
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    6 z, R7 T7 ~/ n8 }7 k; N" j
77. 
    
78. static int acnt = 512;
    6 o2 B+ m5 `: @  m% F
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
      d7 u& K; `& G. \! f7 I
82. module_param(acnt, int, S_IRUGO);
    " }0 T8 y+ [' M2 I- w
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

7 V' V0 @0 S3 M0 {; w, H" }      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
- Z5 b% j1 w# z- uarm-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。
7 x: A5 h, C7 C1 t* 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。

6 ^, c7 B  t- ]