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 application7 X+ G9 |- _& W7 q. q6 h9 }
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application$ P( S6 z# M8 U
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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; ]7 I2 p9 P9 v" }" V% C. q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT& D4 W0 c( s8 Q s+ z% V" S
* TO CHANGE.' [; R( y R+ o
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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
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* published by the Free Software Foundation version 2.* K. [. ~$ x8 }! S0 w. |
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any" ?+ a' x7 E' k* V1 Q) f- B; |
* kind, whether express or implied; without even the implied warranty
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* 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>
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#include <linux/init.h>% t& a4 ~- i& @8 R
#include <linux/errno.h>+ I: E& i2 b' n( p2 \
#include <linux/types.h>
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#include <linux/interrupt.h>3 F( \+ p5 j; M* {& h+ f
#include <asm/io.h>7 o N% T+ t" x: g/ [/ j; m
#include <linux/moduleparam.h>1 h. v" k& O4 X+ X, Q! p- J) q
#include <linux/sysctl.h># o3 x3 y3 ]+ N6 a4 w. U: `
#include <linux/mm.h>1 e% w9 p5 B' G% A3 ^/ z' r
#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>( X+ N- t0 D5 K
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#undef EDMA3_DEBUG9 G, V; c4 I* V1 f
/*#define EDMA3_DEBUG*/% e0 z5 m( C& \) P }8 _
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#ifdef EDMA3_DEBUG5 ]* J. j+ t- R7 F" n' N* k
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)9 {% g" q4 D1 }9 e
#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__)
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#else
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#define DMA_PRINTK( x... )2 |* t- e; K/ r) ~* [) D5 W- X
#define DMA_FN_IN$ X9 T. N+ e$ j4 q H- @9 T2 l
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)0 P# f" R3 B+ Z3 N" n2 {: u
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20$ g% P) y0 i2 A2 n
#define ITCINTEN_SHIFT 21- h1 ?: i4 S9 A+ }- y
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 238 r7 u. D2 y; p% f$ c3 ^" Y
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static volatile int irqraised1 = 0;' @6 F. l' e# X; N! h8 |! W
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);+ ^; Y! f, ], A7 l
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);
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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;8 J ?3 r) J5 U, J. U
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;' a- U# T/ v& h O6 r7 T/ a
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;+ O V J4 v& M5 T
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;. G( q6 l* R( s, y5 a) m, \+ I8 o! A
static int ccnt = 8;+ n( d* x3 B. J' s
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module_param(acnt, int, S_IRUGO);- m# Z, p1 Q3 k) r
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