OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   0 o$ B4 e: m" n0 Y! L4 v. l) [
2. /*
   & Y& c) D& w8 w6 d; V1 }
3. * edma_test.c
   
4. *
   3 S2 k+ G4 a6 @4 I7 J* B
5. * brief  EDMA3 Test Application
   
6. *
   / b8 A; M" b; W, Z$ J7 J: K, h, A
7. *   This file contains EDMA3 Test code.
   & c- Q) b$ R; n/ _% q
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   ; U( M- k# ?" n
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    . a5 ~! o  E) G/ E
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
    / Z* Z7 c' U1 K
17. * published by the Free Software Foundation version 2.
    
18. *
    # n' T. ]# Z1 b/ \0 A! t
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    ; @$ T* ?( i5 y4 v; l: c
20. * kind, whether express or implied; without even the implied warranty
    ) @8 R& F$ X/ v8 \
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    3 J  l3 n$ @3 P" d% k* M# a
22. * GNU General Public License for more details.
    2 ]3 [' o2 A/ x6 K
23. */
    
24. 
    
25. #include <linux/module.h>
    $ ^3 ^& k$ l; O( E5 \. t# ?
26. #include <linux/init.h>
    . s3 F4 Y9 n& I0 N0 g
27. #include <linux/errno.h>
    8 l, V' R/ U4 b3 f" O: W5 r6 V' l
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    - O$ K& N, y1 [+ m; @8 Y  F4 G
32. #include <linux/sysctl.h>
    7 H  {' e) S, m3 \# d) }. g9 _4 A$ e
33. #include <linux/mm.h>
    2 g/ t, y6 u; A3 x( k
34. #include <linux/dma-mapping.h>
    
35. 
    ' y  v* @4 F1 d& y" L* E. _8 Z
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    6 ^' V( w: R, m% M2 `1 R' S* ^
39. #include <asm/hardware/edma.h>
    
40. 
    
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    9 Y# ^6 V1 B$ s1 w4 e5 w! `
43. 
    + G) B- A  H2 Z' u9 X$ U9 Z
44. #ifdef EDMA3_DEBUG
    8 u5 P# _& z5 V# x1 s, c3 E
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    - X# N( z7 g2 F$ V7 U
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    4 q+ }$ X2 A6 t/ D1 _  u
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    , P& N6 {; h7 l& M
49. #define DMA_PRINTK( x... )
    9 a* o) S+ i" _! j0 P' O
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    7 J4 Z$ R2 `* S* Z. E
53. 
    . A: r$ d# W0 t) c  t
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    7 B' K# a/ g1 _3 `# I- n
55. #define STATIC_SHIFT                3
    4 o% o! a0 T! z; ^6 u4 D
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    ) C4 I" @! U' Z! D4 {" c1 b
58. #define TCCHEN_SHIFT                22
    7 b  ~1 g7 w) }) V3 E$ H4 h/ f
59. #define ITCCHEN_SHIFT               23
    
60. 
    . a" T7 `$ h( M/ B* r
61. static volatile int irqraised1 = 0;
    
62. static volatile int irqraised2 = 0;
    3 D$ H! H8 ]' |. T
63. 
    5 {/ Y# i2 ]- q1 p( Q) A7 i, {
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ; s' t- V, p% T. _  c" o
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. 
    . v3 J7 @/ M$ N* O9 X! f! Y" ?
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    & ?- C  W9 @6 C4 F- {
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    $ h8 V- N3 n9 n6 ]2 T0 L$ f; g
77. 
    & q4 U! n1 f) h! [  g! u! @
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    ) u3 o7 Z' x1 l6 |# G
81. 
    # e& O5 }! R) M, K6 W7 Q7 l- x
82. module_param(acnt, int, S_IRUGO);
    : Y$ b; P& T. f6 {! u' n0 E
83. module_param(bcnt, int, S_IRUGO);
    3 ~& L- o3 U+ R0 U, E& [. h
84. module_param(ccnt, int, S_IRUGO);

复制代码

( {8 j' ?' d' R, L( [) o      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。
1 c% V5 F+ n! j+ |( R& A+ P     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。


# M6 B9 m" H5 m