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 application2 i/ E" h5 `2 c# u, ]- L/ Q
/*
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* edma_test.c& M. U/ G1 r/ d7 @2 \
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code./ ]) ?# l0 z: q A+ u& R( }
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE1 h* g3 E5 X$ e( m/ }! ?
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" v) f9 f- Z$ B7 l& _' L
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' X$ m3 `: b* C C. C2 J
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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" _5 I+ N9 a a. t2 n( ~
* published by the Free Software Foundation version 2.
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*( z3 ?* p2 z: O2 V, P/ u0 p8 o$ L8 L
* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 }! u9 u- Z0 Z4 K& J& k
* kind, whether express or implied; without even the implied warranty6 s6 R& }# P3 A
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 ~6 z! U9 l( T7 u# U0 M! P/ d
* GNU General Public License for more details.
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*/
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#include <linux/module.h>8 ~1 n& {, ?: \$ | ^2 A; K9 f
#include <linux/init.h>9 k$ h7 A9 N6 Z: [4 {* R) Y
#include <linux/errno.h>
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#include <linux/types.h>- Q/ r5 i3 I3 C; G
#include <linux/interrupt.h>
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#include <asm/io.h>( O1 A r8 |4 G6 [- O
#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>5 P( q, |* r3 S* R. r+ ?2 o9 o. J% F
#include <asm/hardware/edma.h>: j6 m2 T0 o3 v) m2 `& G+ Q
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#undef EDMA3_DEBUG# v! {/ C7 q, a4 C' c
/*#define EDMA3_DEBUG*/7 `3 n/ x k" S6 u H
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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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__). ^" K3 Y3 |3 p3 V. R+ Z+ o( {
#else
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#define DMA_PRINTK( x... )4 U* A/ x t% ?7 q: s
#define DMA_FN_IN" V7 ?1 f: ]2 M/ Z, n
#define DMA_FN_OUT, K8 E. F& V- N$ G
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 D+ m. t# ` l# c. \/ \
#define TCINTEN_SHIFT 20( a; L1 m7 @2 b' ~
#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;1 O9 I% h, n* A3 u6 O& l
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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);/ k. k P6 `$ v# e2 C9 [1 z/ r1 Y
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& b2 e6 l. ~2 P3 C1 h
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dma_addr_t dmaphyssrc1 = 0;1 @1 A/ h7 Q, e$ u* G1 O
dma_addr_t dmaphyssrc2 = 0;' S: @# W% |: x9 _2 A
dma_addr_t dmaphysdest1 = 0;# P& N$ M) k' h* s
dma_addr_t dmaphysdest2 = 0;& Q, `6 Y; o3 V- e/ T' l3 u
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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;. j r& ~* R3 h1 k6 d
static int bcnt = 8;& o0 x5 e9 `% ]
static int ccnt = 8;: D! U7 P5 ^7 V; J: Q
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module_param(acnt, int, S_IRUGO); ~7 x y* A: t7 P5 _/ z
module_param(bcnt, int, S_IRUGO);) N2 {( r% f$ k# \
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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