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 application4 b5 l& L& H. f% Y' x1 {0 }
/*- K O+ P8 f5 C6 S
* edma_test.c# o8 Q' u/ c" {" M9 x% ?! Z6 k
*! t% d' G9 D; t3 j7 G
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code./ } n- O5 \' A- G1 g+ J! [
*
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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 SUBJECT1 N) h7 p) |2 }7 [' }) K
* TO CHANGE.% T4 X0 t0 h8 L& B
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*6 A( O" A: k9 I; X$ B
* This program is free software; you can redistribute it and/or( m- w7 I! o# P3 y k( k0 c
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 o6 o; J7 z$ F" L1 h$ O L G% M
* kind, whether express or implied; without even the implied warranty$ e( x2 _5 j7 G$ B0 f
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
# {0 W% x. _$ y9 D' o; ^
*/: j4 N9 o8 m" Z
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#include <linux/module.h>0 \7 B, b) D/ m p2 t* a
#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> K+ C. B' q& w* V+ E3 w
#include <linux/moduleparam.h>6 a0 z2 V# E3 @) a
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h># H! r: q( G5 j! g$ G& P& M' i5 h6 S8 `
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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>/ J9 |& h# g& Q3 C+ X9 V
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#undef EDMA3_DEBUG( [9 h# G- x2 ~; ]1 ?6 J
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): ?' Q& M6 _. q- b( Z
#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__)* s8 U; Z0 `, g% \% \
#else
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#define DMA_PRINTK( x... )# z# B: p4 ]9 ] i7 G% Z Y; z
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif S, o1 s5 Z6 C, A
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3% u6 Z5 t* E: j2 M! X/ I% l
#define TCINTEN_SHIFT 206 h( c9 B7 R( l* c
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;+ E" v9 J1 V5 X E4 I& Q$ w7 D
static volatile int irqraised2 = 0;) a- w6 t% t$ @+ O5 d3 E
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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); v' A) T+ `; H2 k5 i
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;1 g; v7 m+ }4 ~ u C$ o
dma_addr_t dmaphysdest1 = 0;( K, E# X$ A- ~! N+ Y
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;1 f% ]$ H2 ^1 @* X# v) o8 h
char *dmabufdest1 = NULL;2 l# I$ n' I: i2 K6 B7 u
char *dmabufdest2 = NULL;7 R) h5 m- t* }" ?
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static int acnt = 512;9 S' `; l& o1 e0 z. p" n/ H
static int bcnt = 8;
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static int ccnt = 8;1 I T* E" d1 X2 k; j( E
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module_param(acnt, int, S_IRUGO);
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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