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.c5 x: u6 }5 j+ x- C- Q) \
*
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* brief EDMA3 Test Application) R/ l; c" Q2 X( X0 @% R) X
*
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, }/ |6 j1 K) Z
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ K6 @7 L3 t% u
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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, N" c8 N+ `1 F5 e1 ]
* published by the Free Software Foundation version 2.9 J& b9 i G, _9 y7 a# C2 \/ J
*
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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.0 y( M7 J& |0 T
*/
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#include <linux/module.h>8 N7 j( @; `/ f3 o) o( ]
#include <linux/init.h>4 z% z! K& ^& f, Y3 T
#include <linux/errno.h>
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#include <linux/types.h>8 F7 @5 ]- E* a2 B5 A h
#include <linux/interrupt.h>; Q I; A. Z4 W5 M3 C
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>5 S! s% o6 z# e& } h
#include <linux/mm.h>
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#include <linux/dma-mapping.h>, F& X4 z/ N4 }4 T/ j- Q; J/ i
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#include <mach/memory.h>1 p) i* N+ v+ ?, h7 v1 i; `/ l
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>. b* U- M* Z7 | S) w+ s
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/ f( {' a; S: x- V/ Y& K9 B- k! q
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#ifdef EDMA3_DEBUG: x& y0 L! s3 [: F8 @
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS) }2 E/ k$ v, e' T: x+ C8 o4 W
#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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#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
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#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;
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static volatile int irqraised2 = 0;0 }! ?' ~3 p; w% B
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 }, `1 O" H- L X( a& t% ]
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;+ U( Q. [# g2 e( W! N9 {8 G
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;% Q2 L/ O. v, }; t+ }$ x0 V
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char *dmabufsrc1 = NULL;' L4 S6 U6 Y/ `9 H* |
char *dmabufsrc2 = NULL;5 c7 t2 ~6 v0 i. O! N
char *dmabufdest1 = NULL;% t: s3 L: t+ K# C, N5 f7 E; e
char *dmabufdest2 = NULL;4 c5 z& S- I& X& {
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static int acnt = 512;. b2 e9 R2 J; U! |" Y: _6 Y' t
static int bcnt = 8;1 x% |/ i2 ?) @5 ]3 H
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);5 ]* D1 [6 g0 }" W7 N. ~
module_param(bcnt, int, S_IRUGO);; r! [- W, K) H9 c# Q$ W4 J! b5 n
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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