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* f! }! c# o5 l5 Z- {
/*
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* edma_test.c
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*+ Q0 `- q* l( w" H! m
* brief EDMA3 Test Application9 g6 Z) B! L, j+ L( |) C1 ?
*
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.3 x/ }5 n1 i- S0 L4 A6 i
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: _% Z5 w/ K7 A0 [* _
*
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* This program is free software; you can redistribute it and/or4 s6 i d- a. s) R
* modify it under the terms of the GNU General Public License as3 i+ D2 d: J. I2 Q
* published by the Free Software Foundation version 2.0 i0 D1 \. d9 E, ~0 P- y
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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, ]! B6 Y9 ?2 t5 Q/ _' {
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the4 M1 ]) u! o/ B$ G. u2 I
* GNU General Public License for more details.
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*/
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#include <linux/module.h>- W- U, y. y1 ~: d G( K s) D
#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>7 U( u! O8 n) c& B" `$ P
#include <asm/io.h>2 B8 B: L; s8 Z
#include <linux/moduleparam.h>6 s% ^5 U( Z( @; ?0 N8 D
#include <linux/sysctl.h>
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#include <linux/mm.h>6 ~/ K4 m R; X. x( i9 Y
#include <linux/dma-mapping.h>
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#include <mach/memory.h>. W# C0 n) K! b- J; Z, P5 U
#include <mach/hardware.h>5 K; c2 J+ j ~8 l3 }
#include <mach/irqs.h>. {" P9 Y! b0 H
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG D3 s; \1 w. h
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS); x/ g" f) S3 U4 p
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ x/ e) N4 n3 u5 c
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else; {3 G9 H: T: g& V/ w0 P. X
#define DMA_PRINTK( x... ). A( X: [- o6 @, J* }( K
#define DMA_FN_IN, a- ~3 s8 J6 a! F& ?- p
#define DMA_FN_OUT! v2 j8 i4 n5 A3 U; m$ j
#endif5 I( C8 Y4 T$ |( R
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)- A; f6 B1 R# M' c% w8 X x
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 236 H" q! m! P$ j! U b
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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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, o* g1 Z' C9 P2 M+ n3 W2 X
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. m8 N; ^& }4 M
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dma_addr_t dmaphyssrc1 = 0;* Y" S* L( |$ t4 I0 A
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0; G- a7 k& [0 T& T5 Y% n) s% y$ z
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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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;5 X2 ]+ I# Z! I, R; E* s
static int ccnt = 8; A$ o, r- F" z" F
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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