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.c1 a$ I: U0 z3 ]* j. k$ ]( x0 m4 U" J/ z
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.- `% Z: g/ V6 a; E8 Q, U; P+ E6 i
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, P7 a+ j# X0 X; w
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 A" P5 X o+ I
* TO CHANGE.+ e+ l. A( {- v9 k5 L
*+ G1 G# @! e8 b( {% @8 {; k* P& c
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 I0 M3 X4 B) J1 B. T
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* This program is free software; you can redistribute it and/or# p' \; ^* y0 H
* modify it under the terms of the GNU General Public License as n3 `. g+ q4 e& f, ?: E& K _
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ v( r" R" y# o: s; }) T' k& X
* kind, whether express or implied; without even the implied warranty/ y4 J7 A+ ?/ l, E
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.- M6 i0 ^" ]% ~- N4 M- e
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#include <linux/module.h>( p$ A5 x' G( `& C5 ?; R
#include <linux/init.h>
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#include <linux/errno.h>" k, p ?# G& f% d9 k
#include <linux/types.h>" ~& Q) J* W; z$ ~1 h& v
#include <linux/interrupt.h>
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#include <asm/io.h>0 c: c9 a% m7 Q' W* ?& u
#include <linux/moduleparam.h>, G, q: X7 h" D; D% J
#include <linux/sysctl.h>% ~3 M" Z1 I- g3 U, x+ u
#include <linux/mm.h>- g3 ^' X0 k) a3 J9 ?% S6 @
#include <linux/dma-mapping.h>
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#include <mach/memory.h>, W: `. W5 u) V7 l# q
#include <mach/hardware.h>; M5 l4 p" Z7 l$ g2 [; ?
#include <mach/irqs.h>8 F' c7 b7 m; J4 _9 K# \. {
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/, \3 V' |# L- L( }" g3 l- Q' K6 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__)6 t, T2 u/ h3 ^( b0 o" B
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). c/ @1 |. T% U' }3 R
#else. z& N3 e6 P9 i/ K& c) ]3 I
#define DMA_PRINTK( x... )( {5 h4 ^# A$ A
#define DMA_FN_IN' |+ ?" n% z" M0 a
#define DMA_FN_OUT
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#endif: d. i: l7 p0 O9 k
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#define MAX_DMA_TRANSFER_IN_BYTES (32768); ^/ b" `3 S5 S e) h/ ?; f0 x& K
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20- q5 x7 B2 K$ C* |7 e
#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;" I: S& Q. H6 B, N0 F
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 I4 @) ^. y$ s6 a0 _
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);" j% @1 s+ S5 t1 A# g
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;9 {( D; g! k) _& }
dma_addr_t dmaphysdest1 = 0;2 y. S5 _1 s; ?# `. p& P4 s- W
dma_addr_t dmaphysdest2 = 0;& V1 E* z- y! |2 ]7 l8 f* b$ \
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;" h$ \- l9 n! f5 D+ J8 U
static int bcnt = 8;' N( O7 N% ^3 {7 j7 Y# }& s; F0 q
static int ccnt = 8;, L; i S' L0 c& m6 X
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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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