OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   
5. * brief  EDMA3 Test Application
   : U: E$ B" n2 v! e  _0 _! _8 [( }
6. *
   0 |, F8 y1 \8 u0 T6 G  k5 O
7. *   This file contains EDMA3 Test code.
   : I; ?2 K7 \. S7 W/ M& a( ]
8. *
   , ]/ W- i8 S/ b' K- I
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
    ; V8 h$ F5 `1 f* x; x9 w1 a. w  ~
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
    - f+ h  c) f% z) d4 Y
16. * modify it under the terms of the GNU General Public License as
    / U/ {) f' W: Q- u( }0 }/ C& w
17. * published by the Free Software Foundation version 2.
    & y+ G, k# C' y4 L9 R) M
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    4 Q) P$ b7 J7 @% S
22. * GNU General Public License for more details.
    
23. */
    * u& [/ @# \- @- m# H
24. 
    
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    " Z+ B1 M0 `+ D, ]) y) A
27. #include <linux/errno.h>
    / G0 r" u9 e1 \' x8 ?5 T( w
28. #include <linux/types.h>
    ( k" C! {. {$ m: U0 I  ?3 E
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    4 B. z- p; m9 P$ w' g# k
31. #include <linux/moduleparam.h>
    
32. #include <linux/sysctl.h>
    . W; b. }& ^+ S/ A
33. #include <linux/mm.h>
    1 U& I1 e. p, M! y( H: d, V* ~
34. #include <linux/dma-mapping.h>
    9 h! n7 q3 X& X9 q  K$ b
35. 
    1 |; i, H6 Y* L9 y/ h( j+ n( e
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    : l  W' {" d, B! Y8 R3 U! x
38. #include <mach/irqs.h>
    " S+ d8 i9 `( {6 d
39. #include <asm/hardware/edma.h>
    
40. 
      I# ~+ p; E/ |  X( S1 N
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    * J/ b3 F7 k( F1 ?$ ~. X( X
43. 
    . n6 K, Y4 |' j6 v$ q
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    1 d' U9 K" _: `. |
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    * c/ }+ F' j0 v5 H2 o* e, Q
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    - [+ f; n) @$ q1 |5 m
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    # j& s1 r1 H+ i& ]+ P6 u! z4 R. L
51. #define DMA_FN_OUT
    # F9 e$ z5 d: R) Z
52. #endif
    
53. 
    % h$ D' Q/ ^3 Q; {* }  S
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    ) H: j3 Q6 {! y. j  d
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    # V$ _( p' B4 `& \: P- O2 }; q
60. 
    
61. static volatile int irqraised1 = 0;
    0 O, s- q* S$ j( m- \( P1 k2 Y0 E
62. static volatile int irqraised2 = 0;
    5 J2 ?, z" p: Q' ?' O
63. 
    3 T$ z3 j1 ]* V/ z
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ' V8 r9 \; K  ?3 C! i
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);
    9 ^) `9 u0 h! e5 Q
67. 
    ) [8 k6 r2 Y+ _% g
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    8 C. d. H$ `: v1 E. z" P
72. 
    
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    3 K& M4 r# f" X4 Q; T& Q5 v
75. char *dmabufdest1 = NULL;
    $ I5 e6 L* p7 \. I7 m, Q- P
76. char *dmabufdest2 = NULL;
    
77. 
    ; _5 o; I% u/ o
78. static int acnt = 512;
    
79. static int bcnt = 8;
    
80. static int ccnt = 8;
    4 j& W' P0 U2 W4 n+ s. a
81. 
    / b/ m* b) n! @- w; W" d* |
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

9 ?5 H& ?3 g# z
0 d  H( z; x* c* C; J) `, W      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。
0 y* t) ^  C6 x8 v$ r& R     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
- u. y2 Z/ b2 F+ I) n
$ R/ i0 N( O' _  S
! c6 k- E2 w$ b- O! ?/ V8 e$ t