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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/*
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* edma_test.c, y2 k" e0 ]8 {- D8 W& d0 o; B# v
*
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* brief EDMA3 Test Application
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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 BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.; U" E6 R) M2 s( K
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// U0 q- m2 e# c% V8 C
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* This program is free software; you can redistribute it and/or7 L" o t* c% l
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty, q' \7 N7 ~+ h9 F
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.% `5 W; G \3 u: z* t' u) j* E
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#include <linux/module.h>9 ]0 ? z2 a! T( \3 X
#include <linux/init.h>+ f, b% f- U* g# D" k S$ L2 E
#include <linux/errno.h> C5 e9 L% Q* v4 W: `. ]3 e `
#include <linux/types.h>% k7 T8 T! p3 W; w$ N" Z
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>1 \+ @7 K Y" ]' K- d
#include <linux/sysctl.h># F* R' e1 y+ J+ _
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>6 V! q C% L5 L% R( d3 t& L* _
#include <asm/hardware/edma.h>" [ e$ O5 F. M4 y1 X
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#undef EDMA3_DEBUG( @; W+ W& I. `4 K9 P
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG# I2 A r& g t/ \) I
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- U1 T0 f& g# L
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)3 E0 j, ^& R8 W- ]; }& p9 n% m
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else4 f q9 ?/ E ?9 Y2 O( F0 {8 i
#define DMA_PRINTK( x... )& w' L/ r- G5 j; A( K( {
#define DMA_FN_IN; @ i3 k3 _* X( I# {6 a
#define DMA_FN_OUT
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#endif3 Z y' p9 w0 }
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 M: ~# |9 a7 L) R5 t: u+ R- ^
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20* Y3 x- I/ y( X5 C l$ _
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 227 V! f, ?& s# e; ~) c& N# \9 _
#define ITCCHEN_SHIFT 23$ s0 X |$ R: }7 h
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: [5 ]9 v; A2 R. V
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);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;' n4 d, G) z- H$ L) H! c7 a
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;% o: u( W) _% s, y! c+ T: x
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;. I! M7 @. l9 d4 H
static int bcnt = 8;2 k4 R+ N3 z# B1 Q0 E% A; \% I
static int ccnt = 8;. @, D/ g# U$ Q: S* { d% |
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module_param(acnt, int, S_IRUGO);# X3 W$ B! B. A
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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