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* X$ x# b) a! `1 ^
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application& v0 h( I* O. y$ z
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* This file contains EDMA3 Test code.0 y; c, L* s# Z# r- F
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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+ n' n) S& T$ ?6 X
* TO CHANGE., |2 p" b! q4 V0 W0 s w3 j
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*- p, _9 r( f/ f5 n
* This program is free software; you can redistribute it and/or( h1 Y/ _# Z1 B
* modify it under the terms of the GNU General Public License as' f' w) z+ Y2 O }+ ~
* published by the Free Software Foundation version 2.! M) |3 {* G* c2 Y
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ L. _4 j7 A+ _4 e5 t& P7 a
* kind, whether express or implied; without even the implied warranty) v* R& \$ ?/ T4 | u* n% E
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 h* w' K8 p" Y: T& X
* GNU General Public License for more details.
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*/
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#include <linux/module.h>: A' t% x# k2 V2 C8 \
#include <linux/init.h>5 H- T* L1 |9 S' t6 _
#include <linux/errno.h>" q; l) Z) m% Y
#include <linux/types.h>- d( y2 g4 z- e/ M* X3 B
#include <linux/interrupt.h>: d3 R( [/ M6 e9 K! Q) o- g( `1 `+ I
#include <asm/io.h>/ N+ j* J2 N! @' G
#include <linux/moduleparam.h>
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#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>
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#include <mach/hardware.h>
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#include <mach/irqs.h>" b6 S& ?, e4 y+ T; ]# y% `' l% B
#include <asm/hardware/edma.h>. w& ^7 {/ _5 I$ Z- N1 C4 Y
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#undef EDMA3_DEBUG, s! u4 A- Q3 _8 T: y& c
/*#define EDMA3_DEBUG*/7 j1 K$ `; S7 q8 |' n# {2 O; r3 r
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#ifdef EDMA3_DEBUG7 O/ q4 L% o$ `9 I4 W& t9 f6 G! s
#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__)' M/ q; o# D4 f- H# X9 H8 Y
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)& H0 [' B: t0 R4 B5 v
#else
#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 30 r) ^ e# c3 D
#define TCINTEN_SHIFT 20. p; a% y+ G. u, u2 ]/ D
#define ITCINTEN_SHIFT 21% {- L9 { ]; Q- k
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;- g2 ^1 B/ t. k! @9 q
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" [. Y/ P g' s
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;
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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;. i5 ]$ [% R! D9 p O0 @4 i( H
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;4 r( x9 \: e( s- m( v
char *dmabufdest2 = NULL;5 s. r6 q4 s: I4 F, ]& p5 _
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static int acnt = 512;9 J! {8 M+ A. X V
static int bcnt = 8;9 z- k% h# x3 v+ a2 P# H/ c
static int ccnt = 8;% s' l: r9 `/ B3 u P
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module_param(acnt, int, S_IRUGO);1 [$ l+ ~: p7 @' j
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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