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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*
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* brief EDMA3 Test Application
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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% M {, u( O$ N3 V
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT2 q! w! d* V8 B1 y
* TO CHANGE.: O4 s1 ]& F. G" `& L
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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+ ` `: i7 p3 b0 U# e' x
* modify it under the terms of the GNU General Public License as3 I( E/ X/ L- t s
* 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 any& T% R. j1 G" x+ P
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 [1 e, j8 _ ]7 T0 y9 s! ?- P
* GNU General Public License for more details.
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#include <linux/module.h>8 V2 |1 C9 E( e' L5 ?0 h. ^
#include <linux/init.h>1 u6 T* S" ?" r- b# O; I! a" D3 h
#include <linux/errno.h>
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#include <linux/types.h>9 z! ~; {2 v7 }
#include <linux/interrupt.h>6 H, h* G! K/ c1 E* Y7 r
#include <asm/io.h>1 W* H9 S6 k6 J( D4 f$ Y
#include <linux/moduleparam.h>6 I4 _6 w a; a" t# x
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>& q% l# ^. s. W% T. s
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG4 O% N3 e7 {$ ~8 P
/*#define EDMA3_DEBUG*/8 V9 v( [8 K; K& p+ B L
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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__)) d4 A* @, O. \% B: \7 u
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN$ Y$ Z. |6 \" f
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20. A$ `6 h5 ]# J! D/ n% m
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23 r U. \- p* @+ t
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;- e) ~3 v2 m5 {# _$ F" h( j# \
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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);% C2 v* Q! |& z: t- l" K# J) m
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( |( A: F4 i- ~
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dma_addr_t dmaphyssrc1 = 0;0 B1 b+ `( A5 @" V0 e
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;4 U; O* B V8 G, W( K* B2 s
dma_addr_t dmaphysdest2 = 0;9 \3 H5 e5 M# Z( B" ?
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char *dmabufsrc1 = NULL;) V" r- c* @! h" Y5 j
char *dmabufsrc2 = NULL;0 X. @' S \+ }$ L! S7 ^ X
char *dmabufdest1 = NULL;( X( V1 R2 f& H1 V
char *dmabufdest2 = NULL;
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static int acnt = 512;2 \& r S- O/ o3 R" [
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);/ z& a! k; h# ~9 D& n" T: C$ h
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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