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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* edma_test.c
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*( z7 c! I( ^) v, @. b! H
* brief EDMA3 Test Application f5 s5 L/ ?; Q) }- [
*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 c. G6 g5 ?/ j2 _
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.5 Q) {; y5 d1 ?) f
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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. `) {0 g8 Y7 p8 X _
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any2 w P7 N$ k6 a; G' Y0 g
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ c7 Z, _0 {. U: e8 b( i8 b
* GNU General Public License for more details.+ ~. u/ Y7 N, V7 l% Z
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#include <linux/module.h>- h7 ^+ T3 d2 I) t3 m! p/ F" a
#include <linux/init.h>! o, Q4 ^ N6 ?4 b
#include <linux/errno.h>/ p/ u* H% ~4 I8 e2 G
#include <linux/types.h>) }9 d% ?, I) ^
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>7 R# z- D" S* @6 {4 j6 v
#include <linux/sysctl.h># n2 v6 S1 u4 o
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>' y5 s. A( [' x3 D5 ]
#include <mach/hardware.h>
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#include <mach/irqs.h>; U8 l2 P$ C; @1 P+ i4 \
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG( }, U( P4 k! Z7 {! _ f
/*#define EDMA3_DEBUG*/0 z* a9 ?- j* o: h5 v+ ~" V
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( _5 \ s8 ]1 M% n- z: Q
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)' `0 u4 X$ \1 `0 O, g" s
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)& S) V2 u/ s/ G6 d! G
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN+ u$ b" q2 S6 n* T/ q+ o. A
#define DMA_FN_OUT! T2 E( a$ i/ [/ v5 o
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3% ?! o$ s7 B/ `" s; Z
#define TCINTEN_SHIFT 201 o U( Z* Z+ w+ v* l
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22 B! D8 }+ s8 G/ }
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;8 @6 n" ^, `# V' |
static volatile int irqraised2 = 0;9 a% f4 G+ r3 [2 `+ b
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; F* k" w8 [8 R- O9 J* d/ U2 P
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dma_addr_t dmaphyssrc1 = 0;! ]6 d& L. m8 k5 ^, [! I* w
dma_addr_t dmaphyssrc2 = 0;$ A" N3 F4 b8 K
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;$ ?; Q v; Y; o; P' A' n2 S! u
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char *dmabufsrc1 = NULL;: Y* ~) [( T7 G2 [/ o: ~5 m
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;( {" g+ s' [& |. K; ]2 a* M' `
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;8 o" ?: u. Y5 ^9 x2 L! s
static int ccnt = 8;5 B! E6 e" u P' M# X
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module_param(acnt, int, S_IRUGO);( g- L8 L A' c U
module_param(bcnt, int, S_IRUGO);& j# t( S+ J4 u/ Q3 B# a0 {
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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动