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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* edma_test.c
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*
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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 SUBJECT0 X; Q2 G/ k& V
* TO CHANGE.* V/ w! n9 f) o$ V+ w! ?2 Y8 w+ m
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or0 L* p2 ?% m, a# v, x" i
* modify it under the terms of the GNU General Public License as( ^% G1 M; O( I3 E W8 e9 g: u
* published by the Free Software Foundation version 2.. i* L7 d8 v2 G7 B7 ^: w) p
*
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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.- O/ v9 Z, Y& k+ W' w: Q
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>. v" Y# X! v1 \( v
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>% V' m$ ?: l& X! A& C/ x
#include <linux/sysctl.h>; f$ W$ m) g$ H( b
#include <linux/mm.h>
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#include <linux/dma-mapping.h>/ C$ h$ w5 Y5 B3 w2 u$ M
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#include <mach/memory.h>
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#include <mach/hardware.h>2 u7 e1 {% M" Q% G+ T% G
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>! o% \ P8 f' r3 g" i* B
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/; K7 _# a1 x& z4 {& Y5 u3 H
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#ifdef EDMA3_DEBUG# r! T$ {: q6 e: }6 N
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ U* Y8 ^8 v5 Y* i1 u0 B% ?: ?* n0 f
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)8 g9 b& ^9 S0 P5 R
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): R( ?; ?& ]7 J
#else
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#define DMA_PRINTK( x... )3 }! u) [3 ?3 d: r) z! P9 W7 @
#define DMA_FN_IN
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#define DMA_FN_OUT! ^ {7 [7 w) u) j) q) S
#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$ T( k, a# f( p4 w3 T/ b* Y$ s
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;" f- J3 ?& N! q* S% x7 G
static volatile int irqraised2 = 0;& G3 s3 D( Y, K# |3 N5 w
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) N& y- c" H8 P* ~* z1 @
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' S2 y2 \/ W) i: Q4 l
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 T$ W J, v) {0 P8 s
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;0 [$ @& a# |/ N) c0 O& J3 o
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;7 B. ~" n% m2 g7 N# G v+ V; @
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char *dmabufsrc1 = NULL;0 G8 C" Z# ]8 ]7 L2 C- i
char *dmabufsrc2 = NULL;4 b3 w; l/ w- ~" i
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL; I& k8 d2 d, S" i j
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static int acnt = 512;
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static int bcnt = 8;+ y K& j0 t; u1 F5 ~8 ]
static int ccnt = 8;
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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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