OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   . w" o7 Q- B; g2 B0 }9 a' X+ t% Y
2. /*
   
3. * edma_test.c
   ; m- }$ l+ }6 q- `% z3 Z1 d
4. *
   8 u' p% k& T9 F- w
5. * brief  EDMA3 Test Application
   & U8 d: g- x( j3 j% s
6. *
   
7. *   This file contains EDMA3 Test code.
   / S' o: h" S' Q; [6 ]  K
8. *
   $ D* c+ ]6 x; X8 h! Q, T8 X
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   & u1 p- {  I& C
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
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
    
17. * published by the Free Software Foundation version 2.
    * S$ H$ D( ~8 ]3 {; c5 s: v
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    # V& F) n& Y$ M
20. * kind, whether express or implied; without even the implied warranty
    + }5 B& @+ Z& m. A2 }
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    9 R: q( q- x' C- k0 ?+ v) C
22. * GNU General Public License for more details.
    
23. */
    
24. 
    ( E5 E* f# A. w8 r2 T2 s( ^1 f! x" c
25. #include <linux/module.h>
    5 S* y9 M. Y  A( `" E
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    ) P9 q. ]8 e& G0 k# M, C
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ; H  J+ p& g1 U" ^
30. #include <asm/io.h>
    
31. #include <linux/moduleparam.h>
    # q* Q8 g; q: p& X
32. #include <linux/sysctl.h>
    ) Z/ v$ E& f1 K
33. #include <linux/mm.h>
    
34. #include <linux/dma-mapping.h>
    
35. 
    " c7 m) Z2 Y( s& g; M" {, u
36. #include <mach/memory.h>
    9 v) J* ~( E) Y
37. #include <mach/hardware.h>
    , ^8 O8 G7 @9 m3 j
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    - y# u) q4 J. L$ a
41. #undef EDMA3_DEBUG
    ' U# B' Z- M! b  A" q6 l) d
42. /*#define EDMA3_DEBUG*/
      j) M( S' g0 @1 a8 U! {& C
43. 
    
44. #ifdef EDMA3_DEBUG
    ' ~$ c" r: T- A  k1 k+ O: C0 L
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! R9 ^5 m# j- a8 ?8 M2 j
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    5 m8 E5 V1 }) y7 D. e8 |4 y
49. #define DMA_PRINTK( x... )
    & m5 L" ^& H3 i: N1 Q5 p) [6 F
50. #define DMA_FN_IN
    + N/ h  ~2 b; Q5 V# |
51. #define DMA_FN_OUT
    ( g  H) d; ^9 b4 d
52. #endif
    " ?+ R1 Y' Q8 U  h. y( U
53. 
    8 k, D) ^9 n) |" ]# u; c$ i8 m
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    : t( N, e; ?. T% K- d
55. #define STATIC_SHIFT                3
    - e2 g9 m0 b0 f5 a
56. #define TCINTEN_SHIFT               20
    . }* @. |( l% a/ L
57. #define ITCINTEN_SHIFT              21
    / H7 p5 I0 x# T( e/ {8 `
58. #define TCCHEN_SHIFT                22
    1 i: Y' [7 n2 r! W4 j* r
59. #define ITCCHEN_SHIFT               23
    % _( U% }1 n/ C' T) {% S$ n
60. 
    
61. static volatile int irqraised1 = 0;
    . |2 X9 t3 y; m$ [- p0 v
62. static volatile int irqraised2 = 0;
    
63. 
    3 B4 ^+ `* h8 w% I/ v. ^0 \% h. `$ n
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);
    , y' r- ?! F. D/ U
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    4 O* O9 O/ |. m- O. W& A( f
67. 
    7 l! y8 _5 W# p5 l/ z( {
68. dma_addr_t dmaphyssrc1 = 0;
    " E! p( v2 C6 R: ?
69. dma_addr_t dmaphyssrc2 = 0;
    
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;
    8 A9 J9 y4 U6 M% p6 v: i5 R( V  S
77. 
    2 v; Q0 A: h0 q4 _/ L! P5 I
78. static int acnt = 512;
    / m1 q9 @, Z7 q" @9 x& |
79. static int bcnt = 8;
    + G" O2 L. A# K1 g! q% `/ a
80. static int ccnt = 8;
    9 j5 j/ d2 r, x: a# d( R5 |
81. 
    
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

# G/ M7 `1 ~' z+ Z" v' l4 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。
9 L0 X& A0 p+ \/ c     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

# p: p5 ^+ s, W- N; G* N' X