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: } U- p. h* w. O7 } _
*
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* brief EDMA3 Test Application
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*! Q3 |7 A. t/ ?1 [, e
* This file contains EDMA3 Test code.
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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 SUBJECT2 u- K0 z7 ~, B
* TO CHANGE.) Z" _0 A9 q$ G. C1 ]
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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( T- P- _3 N& i3 {3 I
* 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 any4 Y8 e2 x6 z+ c0 r4 h9 y
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 s& ]- o2 @/ H. Z5 }
* GNU General Public License for more details.* I, ]& D4 Q( ~. P. Y9 e# L; t7 Q2 T
*/
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#include <linux/module.h>
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#include <linux/init.h>0 ~# t/ G/ G) ~8 F) V5 i
#include <linux/errno.h>
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#include <linux/types.h>0 r0 z" m- Q6 ]& _5 g6 w+ V) x
#include <linux/interrupt.h>* {& i, E1 n2 g2 `2 `
#include <asm/io.h>4 K$ S3 a: K5 f3 A; p% ^
#include <linux/moduleparam.h>, [" H; }5 i1 R# U4 `' p
#include <linux/sysctl.h>7 N; c; ]. e2 y7 t" M
#include <linux/mm.h>' d4 M% f8 X( ~8 N3 \8 j- p
#include <linux/dma-mapping.h>: n& G7 |6 ]' P: f& K% |
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#include <mach/memory.h>6 T! b/ Y# |# u# i+ H% r, }# I
#include <mach/hardware.h>: y/ q, e& p) p# {
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>6 T( j! ]- ]! \- q+ `8 I. Z) R
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#undef EDMA3_DEBUG
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/*#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)
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#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__). \/ O! W; G: y
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif- E! g) t- @# z
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# @1 V% ^/ {8 s
#define STATIC_SHIFT 3" I& p* p, n+ l" M- g0 r: ?
#define TCINTEN_SHIFT 20$ E' e5 j. [! s+ r/ S+ B
#define ITCINTEN_SHIFT 21: S& Q9 T1 a. B" d6 I* Z
#define TCCHEN_SHIFT 22( X2 I5 K7 g" D/ M6 S( i
#define ITCCHEN_SHIFT 23/ ~) z6 I) w: g
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static volatile int irqraised1 = 0;$ p5 [& @8 d/ p! L- P9 }8 w
static volatile int irqraised2 = 0;0 U/ i; ]1 l. {9 v; k- _7 u
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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);1 s( A3 R# a' Q" e3 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;2 Q- R# r+ U8 h* W3 P( F2 \2 B" Q
dma_addr_t dmaphyssrc2 = 0;; E1 C1 v! K& g z8 z
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;- x1 s; z0 Y( }# F$ f% f n* I: O
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char *dmabufsrc1 = NULL;% R: L& n: B& O* h5 h9 V
char *dmabufsrc2 = NULL;" W. d0 O! |* W, f
char *dmabufdest1 = NULL;& E1 `/ m( c8 k$ E- S2 ~2 Z
char *dmabufdest2 = NULL;1 R( G7 A- C T. r. l
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static int acnt = 512;4 t! X& U7 Z9 ?) a. f$ t" G6 u. I
static int bcnt = 8;$ X& S o1 `: C! g4 Q( g5 Z1 `
static int ccnt = 8;' n/ ?+ x1 r: Z; g( w
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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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