OMAPL138如何在Linux下使用EDMA3驱动

yyj

: a. e2 W! Q( y, I0 t

1. [code]EDMA sample test application
   ) R7 J! a1 D: ]+ C6 O# a! J
2. /*
   
3. * edma_test.c
   
4. *
   / f1 G8 I: Z* H+ L! C
5. * brief  EDMA3 Test Application
   
6. *
   % o1 q9 \# f9 J# Z
7. *   This file contains EDMA3 Test code.
   ! }6 I; a' V4 d; M' M
8. *
   
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
    
11. *         TO CHANGE.
    " P( m. |! K$ b8 |& d9 e
12. *
    + Z# w9 h. ~2 G0 O
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    # \  t2 b- N% p4 h- q" K  T
14. *
    8 j' b8 z+ M2 V* K$ l
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.
    5 L2 B+ s* a' K( M1 g' m' D
18. *
    5 |: X3 p; ]0 p
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    - j9 w# t- K, U& j$ V2 _9 m# x5 K
20. * kind, whether express or implied; without even the implied warranty
    5 c: D" k0 W; \) M+ X6 B
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
22. * GNU General Public License for more details.
    
23. */
    , F! H: N0 f7 h) G8 P* y- W- H2 q
24. 
    % U& V( W! u: v5 s3 D4 `" g
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
      J9 s. W* V0 z* y
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    4 [3 w2 R4 p0 _& {
30. #include <asm/io.h>
    6 ^9 w+ E6 `5 x( P( G) @
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    7 C, O5 y! a/ m6 W
33. #include <linux/mm.h>
    ' M' n0 y1 @4 _, m: W
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    : J* \5 g" ]. ~# U; p$ p, H
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    # v! X. I! T. L7 o: e3 b
39. #include <asm/hardware/edma.h>
      n0 k. ^- V$ ]
40. 
    # |3 B" r9 |0 z
41. #undef EDMA3_DEBUG
    ) h4 R+ Q8 e* x8 h4 J
42. /*#define EDMA3_DEBUG*/
    8 u- \1 e4 T. l+ u" H6 A) ]) ^2 ?3 a
43. 
    
44. #ifdef EDMA3_DEBUG
    - D$ ]# v0 {( b6 b1 y
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    ) G0 A: h* f! S0 d" {7 X7 V0 s. T
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    5 x1 Y" }1 t- r* I; f, ]
49. #define DMA_PRINTK( x... )
    $ H2 P8 x9 F. K
50. #define DMA_FN_IN
    / {. D- D/ `# }  K* H2 R2 t
51. #define DMA_FN_OUT
    0 Z! D7 C' Q& |& ]2 U8 G4 L+ ?
52. #endif
    
53. 
    1 Q' }4 @& o, S
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    1 Z% D7 f5 l0 ?4 q6 B
59. #define ITCCHEN_SHIFT               23
    . b4 ?* @- E7 P2 d0 V9 ^
60. 
    5 F& t, |/ z* x9 `, V
61. static volatile int irqraised1 = 0;
    6 ^+ P$ M- S4 c) R
62. static volatile int irqraised2 = 0;
    " B/ n9 ?1 \# [# d0 U
63. 
    
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    " y  R+ h9 j+ o1 B, P- u0 L+ z
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. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    4 Q* f8 y0 c/ C6 \( s0 D8 c7 Q
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    7 S- n' _7 M) w3 C9 o
81. 
    " }: _/ s* s7 P9 {* A- a) k
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

# K- g% ?" M5 m# O6 V& k" a- w; t& c
      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。

( t# Y0 D  m9 f( u3 e