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 application0 o* \1 W4 d# D2 I, ?! t) @4 u
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.- l) H" s! ^/ ?. o
*
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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 SUBJECT3 n( x, m0 q {& \, A
* TO CHANGE./ J8 P4 P/ j f: L
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*- k7 \# f* P/ g4 ^
* 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 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+ ?! ~5 r+ ^" q9 p6 w9 Q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ ]) F0 G0 i: B, t
* GNU General Public License for more details.6 O# f c H- s$ c2 l
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#include <linux/module.h>2 z$ B/ {1 |4 x, g7 f; o
#include <linux/init.h>
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#include <linux/errno.h>2 @+ K/ y% l4 g
#include <linux/types.h>
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#include <linux/interrupt.h>) J# `( w7 a+ v& k4 }8 n" p
#include <asm/io.h>
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#include <linux/moduleparam.h>6 E2 o' j/ w# M- f* h
#include <linux/sysctl.h>. J# Z i+ O. J3 W
#include <linux/mm.h>
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#include <linux/dma-mapping.h>% Q; E$ U$ i( G! r
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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># E' J- o2 C! ?
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/7 k! A; [! i5 h- @/ n
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#ifdef EDMA3_DEBUG$ g2 a( y \9 |' c+ m0 q# T& e
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), Z( p0 j& v: K: ~6 o
#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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN4 x6 m& A. c$ u% F" q7 N
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); C5 J' w1 t6 L5 I
#define STATIC_SHIFT 3+ l0 C; |5 l: x7 W3 l0 h u* `+ q
#define TCINTEN_SHIFT 20) }! b4 @8 I- }& i
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;8 O4 A4 l# ~( G
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);' d# `% U ?: f" _+ e$ I
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;' r' }3 E4 b9 A, W# o: N% T
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;/ u/ y, o$ U {/ J8 b
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;5 h" [9 x. } W
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static int acnt = 512;/ H8 P9 S7 r$ {9 \
static int bcnt = 8;
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static int ccnt = 8;& [) |9 k" t7 t1 W( Q6 O# G
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module_param(acnt, int, S_IRUGO);* Q6 M" {! k7 X6 E1 l
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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