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 application3 Q0 e2 r9 O ]2 I1 w1 r& J
/*
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* edma_test.c! D4 o) r6 j* e! X
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* brief EDMA3 Test Application! K. L. F& @( ?4 R* M% S# X# X* A
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE# }8 `$ h* h, h, `! `" R7 m# L) h
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.( a+ A' m! t1 I5 b* Q
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% p% f3 e0 U& Q* R$ S
*
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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.+ o- G; |; y' U. t# I; [
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any9 w% p% U1 n$ g7 E1 E+ ] @% ~$ H
* 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.) R& N! g" W) J! B3 Z
*/
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#include <linux/module.h>$ c1 R- h+ j, @% L# Q4 \8 x
#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>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>- R% W" |# [8 M3 K, G
#include <linux/mm.h>% L- H- _ M7 D7 G
#include <linux/dma-mapping.h> B8 z6 M& |3 f
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#include <mach/memory.h>
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#include <mach/hardware.h>* l* i& T2 _2 z* P- q
#include <mach/irqs.h># S& `- @8 D) n$ g% f
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG# h* S! E1 |; y5 G5 [6 j
/*#define EDMA3_DEBUG*/" f4 B# \3 i' W! n
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- [% L/ \% O8 R/ {, z+ s
#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__)2 H3 v- w7 x! s2 g& }
#else
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#define DMA_PRINTK( x... ): O/ e" W( B7 \
#define DMA_FN_IN
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#define DMA_FN_OUT7 c" e9 F" L0 n/ v; ]# z
#endif7 n ]1 G6 N- [1 L$ `# ^# t
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 32 S9 C! s! j5 W6 S
#define TCINTEN_SHIFT 20; ]7 t3 a t$ D; p5 c$ E
#define ITCINTEN_SHIFT 21, S* T3 T) H: b5 m
#define TCCHEN_SHIFT 22( K( l5 V( S, H2 w! f9 Z( @0 c j
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;* c5 _$ m$ I# T+ b) t" P1 K
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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);
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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;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;! ?1 m) {8 H, S- u4 v) A
char *dmabufsrc2 = NULL;2 }* \9 d& a7 l) F% I. }, w% x
char *dmabufdest1 = NULL;) p( C/ E8 I, X+ F' X+ x+ H, a
char *dmabufdest2 = NULL;
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static int acnt = 512;2 M5 J% H) D) h9 Y% m3 K# O# e% O
static int bcnt = 8;
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static int ccnt = 8;7 Y2 Q) a. J* H
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);6 d( Y! d, ~; l; O9 K* m1 }
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