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 m* \7 p% J5 P1 d
/*
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* edma_test.c
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* brief EDMA3 Test Application: q5 T5 ]. Y$ }1 j X- 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 BE+ |3 z6 R! X+ f( e% J8 n
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' Q3 v2 T0 z) m: k& y- h
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) F+ C0 E! J' m% } q) `
*
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* This program is free software; you can redistribute it and/or) V3 `) o; ^+ B
* modify it under the terms of the GNU General Public License as+ @$ z G& C8 {0 l* [! H7 U
* 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+ B6 R2 s, N$ H. V
* kind, whether express or implied; without even the implied warranty+ l3 _7 a+ n) y' Q. r) P
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# g7 s$ q3 U3 O$ f/ Z$ [
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>5 s% F) Z, I8 x8 }
#include <asm/io.h>9 @& j- j* E. q# c
#include <linux/moduleparam.h>" e% l4 C+ X9 `0 V' ]/ @1 j& C
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>0 I4 Z& e {5 z0 J
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG# T T' a( T8 d+ c1 s9 k6 C
/*#define EDMA3_DEBUG*/9 M, |/ ` B; C7 J% c
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#ifdef EDMA3_DEBUG) Q- G |. ]3 n3 V7 h/ Q7 @ | Q
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) V: Z0 P7 s# I- ]3 s+ ~
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); P4 z/ i# ^ w2 s$ x8 ^
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif1 Z$ g4 ^7 U# H
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% i$ X% D- k- r0 y
#define STATIC_SHIFT 3) q: I0 z- c6 K5 t O4 ]
#define TCINTEN_SHIFT 20$ V1 N* ~9 J4 n/ z' U, [
#define ITCINTEN_SHIFT 21( X1 ?% L( u9 b$ m/ X: e9 k
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23: u% E: j" q# a# e% F
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static volatile int irqraised1 = 0; f+ n. [0 b/ E
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);) \& T& L& A' Y, R8 C4 W; E K$ 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);0 S+ u4 w7 F& k1 n
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;! ~4 r/ a+ u- F$ z+ T+ j* G
dma_addr_t dmaphysdest1 = 0;+ P$ a, z9 p6 @8 k9 M
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;# y" h$ a2 L! K5 U- ^: W' G% {
char *dmabufsrc2 = NULL;( V) f: s, \3 s2 e" H. T
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;# t' H3 S' | h1 d
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;( y, \* c; q% e: U
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);2 k3 I! M) A! x- D8 H3 E! |
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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