OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*5 q3 p7 U6 W0 o1 T) R
* edma_test.c3 @6 [- B9 p' e# m
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& g+ d6 H4 u& P& L/ i" A- Y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; J/ Z0 f; l* x" i: O: P, @6 V
* TO CHANGE.* Q' C3 a( ]$ w( o/ E
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.$ p7 k* [, |- Y) B/ o* O/ C. v
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any% d& x, k; @, a0 B8 w
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# y g5 n; W, h" n+ u( H. p6 p
* GNU General Public License for more details.- l# M& L q, Z2 P7 P7 _
*/
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#include <linux/module.h>
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#include <linux/init.h>6 R7 `3 _! w2 C0 c4 h5 r$ L
#include <linux/errno.h>3 p. @# f, g! [" S% j4 I6 F- f) I
#include <linux/types.h>, Y% A& X3 [& n
#include <linux/interrupt.h>
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#include <asm/io.h>, C4 w5 x. C* C* q* K- u' c5 a& o
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>5 G5 p4 V$ K, D. c" F
#include <linux/dma-mapping.h>
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#include <mach/memory.h>1 a# [ m/ o' ~* d
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>& s* Y) T" ]1 F, K
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#undef EDMA3_DEBUG& l; @* p* v2 o, p' s" j
/*#define EDMA3_DEBUG*/- J) A1 N+ w6 t; M" X
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#ifdef EDMA3_DEBUG; u7 w- `1 A; O( _
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ E+ O; [" h S6 P4 x/ C+ b# ]
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)7 t0 l4 o+ X' j4 ]+ s$ X
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)3 F+ b2 H- v( w9 }
#else9 a* M2 T8 a! y$ h
#define DMA_PRINTK( x... )9 a) p2 ]) C0 ]; ]
#define DMA_FN_IN
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#define DMA_FN_OUT7 f' C; B- B* q; E
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)0 ^) X2 C8 m$ p2 p
#define STATIC_SHIFT 3+ l( M2 X( s- z% C+ {5 b" @
#define TCINTEN_SHIFT 200 _$ ?% H( A. z9 J' J& {" l
#define ITCINTEN_SHIFT 210 q0 Z: @8 |! p
#define TCCHEN_SHIFT 22 n( t p2 S0 l+ c0 }& F* N9 p
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;" U. y6 E, x& S0 |6 i9 b
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# ~* Z J9 u, X4 w4 }: `1 j
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" ?+ R: g9 y8 r! Y9 F$ t% L; L: n
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;3 t6 L0 A4 y+ Y9 i
dma_addr_t dmaphyssrc2 = 0;0 J9 q" d$ ?8 G
dma_addr_t dmaphysdest1 = 0;1 u# M! j @) {, }0 X7 z' k
dma_addr_t dmaphysdest2 = 0;) o! z9 u/ D+ G' I5 `2 J2 e. j- q
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;4 S7 W+ G6 `7 e/ U) d8 R
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static int acnt = 512;
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static int bcnt = 8;: F% D) y n( t2 e, X0 M% a, J7 x
static int ccnt = 8;; ?5 _" R6 _, {: w
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   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。

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