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.c7 Y6 p: F5 q# t" w
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* brief EDMA3 Test Application9 u+ P" y5 e0 g; L: }" S+ u
*
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* This file contains EDMA3 Test code.; l3 A1 _8 ~5 \3 e2 g; K
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE v1 W# @9 U ~; I: c
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 u0 M/ Z. Q: _5 {' A9 p
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* This program is free software; you can redistribute it and/or: K/ k! x3 i; H) J7 c o
* modify it under the terms of the GNU General Public License as1 s' J2 m Z& P( D' ]" k+ L
* published by the Free Software Foundation version 2.$ A9 n) a4 o, l7 z0 h) N- \7 [( ^
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 n" w% O7 u3 V# q* m! x
* kind, whether express or implied; without even the implied warranty* L7 y- A$ u; W5 R4 Q5 e" \% Q
* 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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*/
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#include <linux/module.h>* d( j# G; k8 b+ | E
#include <linux/init.h>9 h: F6 J5 }# ]" A- ^& `
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>2 h) {5 s( ~7 u* u, w
#include <linux/sysctl.h>9 y, w5 o( {0 }1 q$ R
#include <linux/mm.h>
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#include <linux/dma-mapping.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># I# Q5 w- j8 U
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#undef EDMA3_DEBUG4 b n E2 w' d4 H3 c: O
/*#define EDMA3_DEBUG*/6 _( A3 ~/ N$ F3 |- F2 i
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 w4 Y: C y3 K- A8 e) u k
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)3 J+ f! l* K. @8 G5 l3 K3 ]3 H( h
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): A/ m% j0 w* Y6 r* m7 d$ u
#else! M7 r/ H" ?, r5 k! \( i
#define DMA_PRINTK( x... )7 ~7 B3 e( e( p; K
#define DMA_FN_IN
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#define DMA_FN_OUT6 X/ x% O& U1 g! o/ a* K
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)6 B/ A0 o6 z+ Y0 k$ x
#define STATIC_SHIFT 31 J6 D& A- c3 ^7 L
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21 Z3 E4 p3 F2 W$ |4 u2 M2 e
#define TCCHEN_SHIFT 22! w3 ?" e/ k! Y" |& y: L
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;! I# X" i/ n. I: `2 T+ o; c
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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);: S3 ]6 U& P' N" V! r6 M
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;& @% L' M% S4 m' u/ [
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;/ K% P4 U: }6 k$ s
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;& W4 J$ N" O2 S; v* d4 t( D, l
char *dmabufdest1 = NULL;& q% k3 @% h( B8 Y+ P m
char *dmabufdest2 = NULL;+ @5 v9 o0 V& {) N" D! k2 J7 E2 g
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static int acnt = 512;
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static int bcnt = 8;( Y6 i- o/ _& }3 _+ E0 g3 F8 T! E% w
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);( g: e9 f8 z- y4 C! ?+ W @
module_param(bcnt, int, S_IRUGO);( T7 g* `$ ?% h2 e' ~8 O, c0 {
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