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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/*! t$ ?/ f& C" N7 ~1 U7 g$ }1 @) |% W
* edma_test.c
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* brief EDMA3 Test Application1 }( X# ]/ _( a9 k7 ~5 a( w
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.' x1 X, ]9 y8 r w
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*- {" n3 n* B+ H6 |2 S, j
* This program is free software; you can redistribute it and/or( r! N7 S4 C; ?2 w
* modify it under the terms of the GNU General Public License as# z0 Y. z2 ~9 }1 Z9 a- G- ?& k" T
* published by the Free Software Foundation version 2.+ [- A, ~" o- k$ u& ^0 K
*
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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, o. P% k/ ], ?- j$ w8 Y7 r& Z5 P# R
* 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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#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> P( z' u- t1 A9 u( ~4 i
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>% m9 V' S3 s* u1 ~2 \! s
#include <linux/sysctl.h>5 N0 y# e z; X) {
#include <linux/mm.h>4 |: ~) {4 N' G
#include <linux/dma-mapping.h>$ Z( _. L3 R# {2 N1 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>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/8 O; c; ]& ~. i
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#ifdef EDMA3_DEBUG I9 W) d' p; D) i6 V9 _
#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__): V3 {4 o M4 L3 f7 e- H
#else
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#define DMA_PRINTK( x... )+ Q1 U( V9 Z( ^5 E: w
#define DMA_FN_IN, Z1 \9 \, m* X' X$ } ?" m
#define DMA_FN_OUT
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#endif& f2 S0 a) a6 ]" S, [
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20: ~3 p _8 U+ V% a+ V# I- C
#define ITCINTEN_SHIFT 21) F% d( E0 J( z$ n
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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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);# @' x6 J* K! i
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;' m- H2 n5 g1 `( _9 u
dma_addr_t dmaphyssrc2 = 0;9 b. @# m9 n6 Q% X+ U) V
dma_addr_t dmaphysdest1 = 0;/ D1 D( _9 t+ x! j6 M
dma_addr_t dmaphysdest2 = 0;" R9 \* H4 J8 ]5 ]
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char *dmabufsrc1 = NULL;, P" X @# O/ [
char *dmabufsrc2 = NULL; `* b& H4 \* g- K& p4 e2 K5 K# O
char *dmabufdest1 = NULL;% m& n8 Q: W" d" P) I Q7 R$ t
char *dmabufdest2 = NULL;! ^1 Z) ]2 i* p' W' l [
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static int acnt = 512;
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static int bcnt = 8;) I1 b: v" i8 j- S2 `
static int ccnt = 8;$ v% K$ i) ? L; i% p
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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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