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 application1 l# Y5 ~3 u9 G) }9 h- ]
/*
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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.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& i+ H( a# l, V1 u2 r
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT: M7 |* O; \0 s( R9 u! Y
* TO CHANGE.: V) ^' i3 F1 g/ R; ~, e: m9 a
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ m5 P ^! {# }0 p" ?
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* This program is free software; you can redistribute it and/or' a$ ^8 b( L: o A, A
* modify it under the terms of the GNU General Public License as* X: w2 u% v0 f8 c8 m. x# E
* 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; Y9 p# L t7 \: b( Y1 g9 g- x
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the2 \5 Z+ R3 a) Y
* GNU General Public License for more details.9 ]0 e0 ?3 ]1 N/ t% s
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#include <linux/module.h>/ v3 ^3 d' C5 @, h: D$ m
#include <linux/init.h>7 \" J( s1 [0 a8 H. C0 B/ m9 v
#include <linux/errno.h>
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#include <linux/types.h>8 {4 u' ] v7 n) n4 Q, u! X& B- S
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>, D2 R8 {+ B0 `/ O
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>% d* ^5 y3 I, y7 G# H
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#include <mach/memory.h>0 l; Z6 P9 z" S7 w* ?: {
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>) G- o- t3 r7 v$ x7 K, W
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/ J3 ^' e, E7 F. t
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#ifdef EDMA3_DEBUG3 p; O0 ~/ Q( o$ M2 J0 j
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 M* f) {* U) t/ S3 m* w
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)- T9 H6 u) o; z( _$ T
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )! c! T& p- e% W; R3 A
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 35 k! _; e( X `- H
#define TCINTEN_SHIFT 20& M3 ?% F0 O. Q( [. g
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 233 p4 m0 R! O$ Q& \6 U5 G
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static volatile int irqraised1 = 0;4 n6 Z; b6 V+ W1 Z) K3 @. |5 B
static volatile int irqraised2 = 0;3 z6 A7 {! _0 B8 P3 r( T( I4 H; H
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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);; X" g ~# v1 C: p. N3 Q. O
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0; S" K/ s c! N' t
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char *dmabufsrc1 = NULL;% W% s, G3 N# O6 q9 _8 O
char *dmabufsrc2 = NULL;! ?, t+ i# t- O/ @8 E4 E" t
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;: s0 ~. {. h6 w/ {, Q1 }; I8 V8 a! \
static int ccnt = 8;) Q7 W, T" D8 [7 c; j* C8 J7 m
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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