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 application2 I8 |- O) c$ Z
/*
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* edma_test.c
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*$ r, t, i) V6 c
* brief EDMA3 Test Application
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*
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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" o/ v8 q# ~+ `/ e! \" P
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT8 u5 t% W* P a. l
* TO CHANGE.
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*
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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; i1 K+ b1 S' A4 x6 k# I- r
* 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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* 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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>' B* }/ F; {1 I. ^/ w0 h
#include <linux/init.h>
#include <linux/errno.h>! U+ _1 E" u. z0 n( @' \
#include <linux/types.h>. Y& i0 J6 U0 y" z% ~. n
#include <linux/interrupt.h>( f" G4 v& R7 |7 s+ j2 o! m
#include <asm/io.h>% c9 O% S* e$ I- K, u
#include <linux/moduleparam.h> N* ^, e% b- [4 u& t9 F
#include <linux/sysctl.h>
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#include <linux/mm.h>& s2 j8 r$ }' R! w0 x
#include <linux/dma-mapping.h>1 U. z( ~- @3 x, C4 V
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#include <mach/memory.h>4 m% {+ g# D# |. e# X& D3 c
#include <mach/hardware.h>
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#include <mach/irqs.h>" z! F h6 |" r o/ C
#include <asm/hardware/edma.h>* |1 f$ h4 ^2 H
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#undef EDMA3_DEBUG" I) C; e3 v2 w9 ?
/*#define EDMA3_DEBUG*/$ ]: [7 [& b/ {" P( s# o& T
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#ifdef EDMA3_DEBUG, ^4 M' J M0 s# v/ l) H
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): m! Z+ y) s0 w$ L- i: j) v+ H' u
#else
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#define DMA_PRINTK( x... )$ n( L8 U8 H6 F; {
#define DMA_FN_IN: M/ T4 Y0 G/ ^. q% X6 a6 l
#define DMA_FN_OUT3 }3 s% _& U" s
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), F- b. y! {% |) }
#define STATIC_SHIFT 34 J3 X6 D7 H/ D) Z+ }
#define TCINTEN_SHIFT 205 s3 a$ [1 D3 f' k, z- B' b
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 224 X% e; D/ u6 p8 r1 [
#define ITCCHEN_SHIFT 23( }' W' P" c* R0 X4 S
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static volatile int irqraised1 = 0;( @% g8 j6 K* E7 l+ y
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);
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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);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;, o: K9 i! B8 S- A7 H
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;. g. w1 w. z- \4 Z# R. O( q C
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char *dmabufsrc1 = NULL;% H4 H2 X7 w8 w7 _2 T% X
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;% j. T0 Y* O2 P1 B' U2 e1 R4 i
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);/ A. D1 A9 m0 b: J$ i9 N( `* f
module_param(bcnt, int, S_IRUGO);; C+ j+ Y4 m6 v( q% L8 \2 M
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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