OMAPL138如何在Linux下使用EDMA3驱动

yyj

2 x) g3 i1 D+ Y- h, O; U  r$ g

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   , ~& {+ n4 k8 b; k
4. *
   # ~% V* ~! y. I4 X# D( ?( i2 r8 T
5. * brief  EDMA3 Test Application
   . j* f5 L8 |- x0 F9 \
6. *
   5 b6 j, O6 `( T5 i" J) g: G& C. }+ x
7. *   This file contains EDMA3 Test code.
   
8. *
   ! t1 Y+ U% o- G* V2 x
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ; h% z/ Z3 o$ X. K
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    8 X- E1 l- ^1 R4 A9 U' U1 f
11. *         TO CHANGE.
    
12. *
    
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
    ( `2 g' R1 @/ K! c% x
17. * published by the Free Software Foundation version 2.
    
18. *
    5 c& `0 g. c" U* 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
    9 z+ a+ i% s  N% [/ J
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    5 @$ ?7 h1 M, \, a, d2 ^5 Q) u5 ?$ r
23. */
    $ w; c7 A1 O" D4 ^, x$ ]: {
24. 
    
25. #include <linux/module.h>
    # e, V/ Q. b! a) N8 o
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    9 t2 h" Y; x- n4 f9 Y( |
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    1 \! l0 I0 C' s. O$ p2 k! j: O
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
      @, a# X. Y* o; w: d
39. #include <asm/hardware/edma.h>
    4 y7 B) v( d# w* V1 |
40. 
    . w$ K& N+ w! n  k9 l1 M
41. #undef EDMA3_DEBUG
    1 w8 V4 G4 G* B6 z) u! @0 o
42. /*#define EDMA3_DEBUG*/
      `6 Z% k( ~* n" V2 ?+ D4 e
43. 
    + n" f2 o, O7 K' f# u, X5 J
44. #ifdef EDMA3_DEBUG
    " r9 l5 J7 P) e& V
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    7 i% R4 x7 t, v/ o9 h5 f  u
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    3 v7 s; D/ P0 o) k+ ^
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
    
52. #endif
    
53. 
    + ^/ l+ F% x* n) m1 r3 N: s
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
      V4 M) b) Q% ^$ M0 T) t* m1 `
55. #define STATIC_SHIFT                3
    ( ]; h  ~& n$ {4 h/ V: B  o/ d7 N
56. #define TCINTEN_SHIFT               20
    + ]' x  y) c2 z# \. l5 Z
57. #define ITCINTEN_SHIFT              21
    0 \- |0 Q- R! L( Y3 q5 Q
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    . U: e  H0 S, l: {7 y+ H0 @7 d7 a$ x' B
62. static volatile int irqraised2 = 0;
    3 @/ Z0 J8 k5 B) P
63. 
    3 u8 C$ _/ u: g6 q. y; S
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);
    8 d9 C& R5 S7 R6 A; o
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    4 {0 v- {1 L; t: k4 j! V- b* g% `
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    % Q# ]) f6 g0 }3 v* C' K
69. dma_addr_t dmaphyssrc2 = 0;
    6 G9 A0 w' g& ?) a( R: a
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    + o* \0 _9 H$ y/ s
72. 
    
73. char *dmabufsrc1 = NULL;
    : I# [" R7 g! l7 [. p3 m! @4 g  C
74. char *dmabufsrc2 = NULL;
    / w/ e2 W# Q  Y6 B" u1 l
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    # {5 s1 F2 n) Z4 ]) k4 l/ e
77. 
    
78. static int acnt = 512;
      e/ V8 b( B: ?% R( c, j0 v
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    2 a, G2 `% p2 i2 c8 T
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

9 Q( W% ]+ t' |7 y1 I( W
6 ]+ z2 W8 ?9 e# {      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。