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; Q1 s3 c5 n) k8 E: M1 q: m5 R
/*! z5 ]9 o6 L6 r8 w
* edma_test.c: x; k" h ~2 i, G2 L
*) `8 ]5 E* @/ M) H
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.4 R( R7 Q2 F g0 {, p
*+ N) z9 ` C4 Y9 a+ o
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- c1 Y5 {0 o$ W
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.' C% d# L D2 A% g+ t
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 e. m. J2 n( h( k
*
* 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 2.6 f1 i2 j/ u! }' V5 U4 F3 _5 d% P
*
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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
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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.5 |0 p; G4 H% P8 }0 D; |
*/
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#include <linux/module.h>0 e' Q, ^6 l% _
#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>, }( G; {; u- e( M/ s3 o
#include <asm/io.h> h d6 `7 D$ n* b- `4 H s
#include <linux/moduleparam.h>% y/ J9 N- r) |7 B
#include <linux/sysctl.h>
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#include <linux/mm.h>4 p$ Y3 K0 A$ \4 S
#include <linux/dma-mapping.h>5 M" V+ W) D( U2 I
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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>0 d* R. @; |6 O9 k9 F
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#undef EDMA3_DEBUG/ r3 M, l: B- D# Q$ R; ^1 o
/*#define EDMA3_DEBUG*/8 Y f% Y" Q4 X/ {3 `3 D7 A
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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__) C( H% J' q( w
#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/ z$ b4 c: P" }( i
#define DMA_FN_OUT
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#endif7 h c! r1 Z1 h( K
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). @ ^ h$ Y" E% [- d- x( c4 a
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20 r* m5 N5 I. \( b( c, F' x
#define ITCINTEN_SHIFT 21+ o S/ h- P, @# F* O$ P# O3 r
#define TCCHEN_SHIFT 220 _+ l6 \1 n( I$ `+ V, t$ J* F
#define ITCCHEN_SHIFT 23) m/ D0 g, R' q' Y/ W
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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);4 L: Z' g% J0 {/ N5 g$ C
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 d9 K4 x. H1 P$ D2 _9 K& W. C
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 V) S, Z' G. ~% D: B$ w
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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;) D# e+ @) _+ o+ W: {' M
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;" q% t& j: W3 ]# m$ v6 b8 y" j" y. p
char *dmabufdest2 = NULL;+ ?1 S$ R5 z ]: B
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static int acnt = 512;( |' d% z4 ]5 B& q; }9 o
static int bcnt = 8;! F/ Y* H5 B0 S. J& N
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);' k; b+ ], G3 ? S; {
module_param(bcnt, int, S_IRUGO);. x+ u8 w4 O- _6 u0 [
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