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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*- w7 F3 ]6 J0 e% R& P
* brief EDMA3 Test Application
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*
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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( x7 p" g2 ~9 X' h, j6 h
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT8 D5 r, t0 F* f# D p5 F
* TO CHANGE.6 I; | R7 B5 {8 J A& l% N
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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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 as: q1 j( z) j6 }3 X0 r' l* o
* published by the Free Software Foundation version 2.- u2 R" M2 g1 y4 Q+ y8 Z" ?
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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( r& A: H; s* O3 j# o
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.: N9 |& \1 \* _& \/ }8 Z# M7 a
*/
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#include <linux/module.h>6 g9 b, q4 T4 X# M5 m. }
#include <linux/init.h> k8 r# U7 z8 v- f1 n
#include <linux/errno.h>2 A# |$ Z6 u. w; u$ c( J
#include <linux/types.h>+ f$ r$ v6 Q/ @# B0 ?( d
#include <linux/interrupt.h>
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#include <asm/io.h>2 [! {5 H. m2 m4 j
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>/ e/ U# y% Q( a: f" C* J* _2 Z/ K- |
#include <linux/mm.h>; p$ J2 V* a% ^, q: V
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>! C% a3 Z0 Z5 U
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>2 r% o. C* m/ E. ^8 P; @; E- E4 b6 }
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#undef EDMA3_DEBUG9 t9 [" k2 ? X% B5 b
/*#define EDMA3_DEBUG*/ L9 @: L, |% U9 U
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#ifdef EDMA3_DEBUG
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#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__)7 A2 P0 d3 s" D3 F* y
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else4 U9 A2 c2 D, o, m t
#define DMA_PRINTK( x... ), m# |" _8 R' k9 H+ c
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif9 j8 V* R& l, l* ]
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)7 ]% u" f/ H% u: d
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20& S7 n+ r1 ]+ g9 p1 B0 O6 s' q
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23- Z2 j* z K) i$ K- {; p
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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);. X0 b7 A. E# W$ X) q" [8 \
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);" M! ?# q- A4 f1 L' H6 O
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;( K/ Q2 f6 L; o
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;- E. }2 C& { R9 g+ t1 ?
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;- H+ g* e S( N- g; w1 O! V
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;! [( G+ Y. M; _" m
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static int acnt = 512;( H8 Y$ l: \/ v) p) ^
static int bcnt = 8;
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static int ccnt = 8;, p. R& [5 Q, u
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module_param(acnt, int, S_IRUGO);& N& {$ L g) F6 m, \( w" ^0 g, j
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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