OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   3 D) G6 k# w2 k: m/ ~
2. /*
   1 u) L% I0 L8 N( D. q4 |- V
3. * edma_test.c
   
4. *
   4 |: O, a4 B& s3 X: R# S( U0 D
5. * brief  EDMA3 Test Application
   
6. *
   ; Y) x9 t- |. R/ `# P5 V7 u
7. *   This file contains EDMA3 Test code.
   
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
    1 K  Z  J2 S  g
11. *         TO CHANGE.
    * U+ x6 `7 L7 s$ R( L
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    $ x+ z! H4 q9 ?4 W7 P# G
15. * This program is free software; you can redistribute it and/or
    8 }$ {& c7 {4 r
16. * modify it under the terms of the GNU General Public License as
    7 }- ?+ {* d2 p0 p! P7 F
17. * published by the Free Software Foundation version 2.
      k9 n, e: B9 [8 Z  \- X( H; W
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    & `1 Z, F6 I/ z3 k+ N2 p. A
20. * kind, whether express or implied; without even the implied warranty
    7 G  g$ @5 j+ p! |( @  Q
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    : v! ]: O4 u1 m5 y3 k: l2 u' L( V( E
22. * GNU General Public License for more details.
    % X  m+ o6 ?. {% g5 {& w+ k
23. */
    
24. 
    * ^+ H1 i2 H# X, e( i
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    ; h8 E# C; J( w. `  f
27. #include <linux/errno.h>
    ) n  V3 g6 s7 `0 j  l' z* B& h
28. #include <linux/types.h>
    ) y1 m$ S5 d9 r: S! x4 B
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    # {; b3 U( M0 b! i7 `
31. #include <linux/moduleparam.h>
      f$ q, T4 n4 P9 P; v
32. #include <linux/sysctl.h>
    , G3 x3 p! v# d8 L; y
33. #include <linux/mm.h>
    $ [5 X+ Y, n& {( i& s- |, `
34. #include <linux/dma-mapping.h>
    8 {# `: Q$ k. l
35. 
    
36. #include <mach/memory.h>
    ; W( z3 B( U7 B7 v
37. #include <mach/hardware.h>
    , j0 B& L" W2 ^
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    . @2 g' `3 y4 u9 `$ b
40. 
    
41. #undef EDMA3_DEBUG
    ' O7 _* E, h: K( m- c+ n
42. /*#define EDMA3_DEBUG*/
    
43. 
    + R5 l* `, q! x: ]( ?1 o% E
44. #ifdef EDMA3_DEBUG
    5 U: {+ p" B/ u
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    8 v/ B. M1 a' `$ E; L5 t
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    
48. #else
    
49. #define DMA_PRINTK( x... )
    
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    5 }7 M  s6 b; b6 r4 w: V
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    
59. #define ITCCHEN_SHIFT               23
    1 p7 c% B/ e( b" a0 {
60. 
    
61. static volatile int irqraised1 = 0;
    / a' i$ Z' @9 g( d+ T- @9 ?8 M
62. static volatile int irqraised2 = 0;
    ) |0 C0 h$ a6 g  n% O
63. 
    # g4 S5 f9 N+ K7 p& W; H. t
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    5 B9 M$ n8 g* p: C% B
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. 
    5 Z& c. s) X: n4 E
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    / N$ z7 b+ d7 T" b
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    
72. 
    
73. char *dmabufsrc1 = NULL;
    * f; @+ {' D" x5 Z! x
74. char *dmabufsrc2 = NULL;
    ) h/ f# ?: E! B9 Q5 M
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    1 D. B5 x5 E" [7 c
77. 
    . H% k, [/ n. V/ _" e& Z% ^0 T
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ; v, \- M) H9 a- E, o  s* V5 B
80. static int ccnt = 8;
    8 ?6 J$ e' R2 u$ ]$ H& H  `
81. 
    ! [/ h3 {' g/ T, T7 ^( g
82. module_param(acnt, int, S_IRUGO);
    ( V6 X: ]. l( W7 W* e& {
83. module_param(bcnt, int, S_IRUGO);
    6 M7 c# a' K0 o( y* d+ ^. D. U
84. module_param(ccnt, int, S_IRUGO);

复制代码

4 X7 r! Y, v' o% G9 M+ |7 l* d+ J  h7 O
0 I. }* o: |, {2 u      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。
# q7 [- _3 {" F2 a6 k     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

& A3 d8 |$ a% E7 G4 f
0 E) E# L' T6 Z" U* X/ I8 ]