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
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.! x( X( t i p8 L
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE! `# l2 U" `5 |
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT% {5 m4 U# x3 F8 {" P! b
* TO CHANGE.( }- j# T5 B$ A0 v$ J
*- c, A' W6 R# E
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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 as6 D# c* H" O: V9 m
* published by the Free Software Foundation version 2.) p+ i# P, l' I6 ]. f8 s2 X
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ ]# {" e# M2 g9 ?$ T
* kind, whether express or implied; without even the implied warranty" | g. J2 `( W0 i Y
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. y5 k" H$ D, z, B9 H8 S
* GNU General Public License for more details." \4 g1 C9 i, m/ z. o' R2 ~/ @9 H
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#include <linux/module.h>: a5 c' J$ Q. u) D, R2 A6 @' w
#include <linux/init.h>
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#include <linux/errno.h>3 H( D/ b: N9 ]: b; R: Y
#include <linux/types.h>5 m, [) g3 U$ D1 {9 U2 I% @. M
#include <linux/interrupt.h># |/ b4 B* n! u0 w/ h, j
#include <asm/io.h>
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#include <linux/moduleparam.h>9 y% U3 P" ]/ ~5 J' w
#include <linux/sysctl.h>' L" V a* z3 ^0 {
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>3 L2 L" u: z8 x2 O& E( C3 b* s. z% P' {
#include <mach/hardware.h>
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#include <mach/irqs.h>. ~% ]- H1 N6 Y2 h" q' P
#include <asm/hardware/edma.h>0 L h% [9 U3 z" s2 F
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#undef EDMA3_DEBUG& d0 G! {) m6 c0 w0 ^: N
/*#define EDMA3_DEBUG*/5 A3 P6 G% v7 B0 G0 }
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#ifdef EDMA3_DEBUG0 `3 J3 c5 f% |( E% d1 S' k+ \
#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__)$ C& C @$ i8 a% F+ C
#else* ^! t6 G5 o) H( u7 ^; l' z
#define DMA_PRINTK( x... )8 t# c3 ?2 l s* k+ h
#define DMA_FN_IN5 T" B9 x: b- ~
#define DMA_FN_OUT7 C0 N* ~ }* f) [
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 q9 v8 C1 b; A2 @& t6 O" `5 g
#define STATIC_SHIFT 3, Q" Z+ v! a5 C6 V, X
#define TCINTEN_SHIFT 209 v- w7 j- x1 B0 G
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22$ Y8 p6 x8 P7 u A* c& U, |; x
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;/ d% @' h7 M2 d0 W
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;3 I" G( F2 }6 B6 E0 U
dma_addr_t dmaphyssrc2 = 0;6 @: `% K. `! F6 D; e! r
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;3 @1 P* k4 H# F* T
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;6 m% I) a/ C! L: J4 L
char *dmabufdest2 = NULL;$ |2 e4 ]* \4 X- w" d$ k0 x
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static int acnt = 512;: a( [+ C* m7 N; U+ d y
static int bcnt = 8;# E, M6 D1 E5 N U; K2 f( d
static int ccnt = 8;
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动