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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/** d8 l6 @: L+ d. f6 f
* edma_test.c8 @: V1 }9 i! g6 D
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* brief EDMA3 Test Application
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# r& v& ?0 }! U: Y. e$ o1 E
* TO CHANGE.5 O* |* b% V1 ~& L6 N! Y+ E, x) _
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! ]4 D( m( R: y/ X, y
*
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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! f5 C) I( _8 T) m% T( t& D( N
* 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
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* kind, whether express or implied; without even the implied warranty! l5 l9 m# B I1 b( q7 L* v. q+ v
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details. f& z0 h( H g+ g6 k; }% n5 t* u
*/
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#include <linux/module.h>
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#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>2 B# e! n) e4 Y
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>9 N% T3 r" f s, j4 r
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#include <mach/memory.h>! L0 p4 m% I$ p- s8 B% Y6 D
#include <mach/hardware.h>1 E# H: i8 ^9 z o9 w7 p0 ?; z4 h9 F
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/; Q9 Y) s# ?( r
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#ifdef EDMA3_DEBUG+ s2 W. t) d0 i
#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__)" Y5 e% u9 }( v- l, d& Z3 |
#else+ M/ M. [& A* y, m7 B; h
#define DMA_PRINTK( x... )6 k- K0 ^# j- {% y9 p8 Z) F9 F- m
#define DMA_FN_IN/ p/ z7 U: d d1 h
#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$ Z/ i+ {& n) r. s: V6 d6 E
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21. i, t% A. n" `' w6 C: k. e7 H- P
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 236 f" f! R' t( [
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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);1 k* l! f5 p& P1 h H0 k' H
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. j& n T' K# g+ `$ a, 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;
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dma_addr_t dmaphyssrc2 = 0;) P1 o7 J$ m/ u% T$ ~9 o6 @
dma_addr_t dmaphysdest1 = 0;$ D6 k' d6 S5 N7 |8 \: q
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;) G! l \; B. k0 k7 O t
char *dmabufdest2 = NULL;( @) r2 c6 Y6 A2 }( H7 [' r
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static int acnt = 512;( Q4 A* E' D8 F# F
static int bcnt = 8;$ t0 N% M% A! e1 N. c m
static int ccnt = 8; C8 k5 w, l* S# U# Q' f& S8 h) o
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);, K2 Q! s( U; z# T
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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