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 application0 D* K8 a- H2 k* o
/*
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* edma_test.c6 i* w3 [0 p6 ~9 c! t
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* brief EDMA3 Test Application$ e1 s2 Q6 _' v6 j2 p' i6 m' O. s
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* This file contains EDMA3 Test code., [/ w) Z" M5 u
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE* A- d. ^# D3 e8 }
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; C3 U' i* a" Z' m
* TO CHANGE./ G. T& k; j% x! H5 Q) z I. J
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or0 c0 Y8 b6 a# t: o. a4 u
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.1 y4 U+ ]1 E9 c
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any) \% y) Q& v; g2 G
* kind, whether express or implied; without even the implied warranty; J) _8 F5 o+ p% [6 O5 l
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) {8 E1 W: ^% i+ ?/ }
* GNU General Public License for more details.1 C) h- Y% f) w
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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>
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#include <linux/interrupt.h>% S! g N4 J m+ r/ k
#include <asm/io.h>
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#include <linux/moduleparam.h>0 N X7 T9 B& \" P l% ^3 Y
#include <linux/sysctl.h>3 \- ~" p8 d9 ^6 B
#include <linux/mm.h># k2 q2 x0 G' K) F
#include <linux/dma-mapping.h>2 t* M; y+ ?6 t0 X% c# W( g3 T) J1 D
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>% q6 t; p0 ^, G$ G: \
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN8 j. W) ?, d, U" G
#define DMA_FN_OUT7 U g) |2 i, [% [" e
#endif$ f+ Z9 j. }# i6 h2 k
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3/ f+ ]6 Y4 |9 y! H! `
#define TCINTEN_SHIFT 20$ @. Y. S/ h3 z$ _$ F; ^' a: l& Y7 q& T
#define ITCINTEN_SHIFT 21- r. T! ~" Q' J# r" R6 S" Q9 O2 N
#define TCCHEN_SHIFT 22 R) ~- K# b, w3 n( ~# [ b2 a+ p
#define ITCCHEN_SHIFT 23/ }1 v$ ~ [8 g- W1 b q( f
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static volatile int irqraised1 = 0;2 _0 Q! W6 d4 U Y. B7 C& E
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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 Z8 s7 x" U9 K3 I9 `4 k3 o
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dma_addr_t dmaphyssrc1 = 0;+ R% y5 O# @* ~0 b/ k- O w
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;* Y3 T- {4 j; `3 c
dma_addr_t dmaphysdest2 = 0;% Y1 j$ i% D3 w, Z y
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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;% j3 S) t8 _! y. u5 F" a0 F; S
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;$ l8 Y, u4 U( b8 C7 a$ ~3 v
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module_param(acnt, int, S_IRUGO);3 V! M2 i L b
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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