OMAPL138如何在Linux下使用EDMA3驱动

yyj

: m9 X0 e; g+ n: g1 x

1. [code]EDMA sample test application
   
2. /*
   $ d- g+ d5 e( a. M" n; q
3. * edma_test.c
   / `# T0 Z1 k" j  @6 P# C
4. *
   . ]7 o/ K7 z0 C0 |7 z
5. * brief  EDMA3 Test Application
   # ]5 W  x. o4 q( A# B8 Q* K8 X
6. *
   
7. *   This file contains EDMA3 Test code.
     A7 M1 ~, |) G$ t( p) t# h
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   7 l( ?8 M9 W. F% J. M
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    7 u, _, A# g7 b4 F, M0 ~
11. *         TO CHANGE.
    ; \# ]* o$ T7 \
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
    1 W) M. l, }6 ^) e1 o3 D
17. * published by the Free Software Foundation version 2.
    
18. *
    # y$ g# L( U" x- c( c
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
    8 s) s9 V6 S6 z3 X
22. * GNU General Public License for more details.
    
23. */
      }- K: Q" u: k% Y) \) Q
24. 
    7 l. Q- O8 E  J8 N3 t
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    
28. #include <linux/types.h>
    + T. r8 q/ y+ J, c
29. #include <linux/interrupt.h>
    2 k! U9 y! X9 I# R- k1 O
30. #include <asm/io.h>
    1 O1 q: s+ f9 A" }/ j6 N) `
31. #include <linux/moduleparam.h>
    4 {6 [7 U1 I7 l" h7 A
32. #include <linux/sysctl.h>
    8 T$ X' S; Z  t8 Q' {  x& z; E
33. #include <linux/mm.h>
    + c% ]% Q& ~- x. F
34. #include <linux/dma-mapping.h>
    1 k6 ?5 h6 c8 Y1 m
35. 
      T7 b- C* X/ i$ J; ^, R' Z, L
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    " q; k% W' _: j, d: C
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    % J. q, {2 b0 j! }
41. #undef EDMA3_DEBUG
    
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    , j% F9 Z- c) [0 f& u
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    1 _* Q, e5 D8 h
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    9 b$ M% c. X  {
51. #define DMA_FN_OUT
    + t8 _* a: d9 T6 S+ s
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    5 k+ D+ f7 K6 K5 e! c2 r0 J
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    ) O, M; R* u" T& N
59. #define ITCCHEN_SHIFT               23
    1 G; E' t) t' i0 t  `0 n( s
60. 
    / a9 \+ I+ a$ w8 @* u! T$ q$ t
61. static volatile int irqraised1 = 0;
    1 A9 U' [$ i% o/ i
62. static volatile int irqraised2 = 0;
    9 B  C2 I% d  E6 I  z( R
63. 
    
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);
    
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    : g' E7 x; q$ k( l! J
67. 
    
68. dma_addr_t dmaphyssrc1 = 0;
    : I2 z1 s5 a9 o+ M" k
69. dma_addr_t dmaphyssrc2 = 0;
    
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    ; w" H+ n. [- l- p# g( I' t
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    + [5 V% h$ _1 Y  C
77. 
    
78. static int acnt = 512;
    - E5 e/ O+ q* S
79. static int bcnt = 8;
    * l- w: E9 Q  {) O$ F2 B
80. static int ccnt = 8;
    ; b, _* Y9 E% D( ]& b
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
    7 F  h& A  k$ w; H- s- O
84. module_param(ccnt, int, S_IRUGO);

复制代码

% y* ~% j' Y+ o6 y1 E4 G: |1 X$ S      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
0 p! y5 r" ]2 w: x: Z/ marm-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。
9 O7 h% r; X' E4 B6 V3 t     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
! y# g9 h& Q; ~1 n7 U