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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/*3 i$ N' c5 y& H% D! F1 H
* edma_test.c! I6 Y* |! z% P% N! T7 G D0 Y
*
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* brief EDMA3 Test Application, k+ h4 a6 l+ M
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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 SUBJECT) ~5 k- e9 a+ c% z# A) Q9 h7 i
* TO CHANGE.& D4 h& L* d- L8 W2 f$ c& M
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/1 M8 m2 z9 |9 u/ Y
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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# {3 {! z1 ~6 | P
* published by the Free Software Foundation version 2.. }/ U' w3 _: o9 t5 M* ]$ }0 G4 X5 \
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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' m7 y' w; C x
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; i4 K; ^1 e) n3 \7 G! `" w' G
* GNU General Public License for more details., Z! B. s$ S! T; e* x' d2 f
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#include <linux/module.h>2 P6 p+ G: t- |. W" z& k) i, d) n5 e/ P
#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>3 x- ^) Q$ i6 G; L9 T% p& C
#include <asm/io.h>
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#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>4 j. \# C1 Q% d4 G* J) d: m. p
#include <mach/hardware.h> t n) t S3 Z# ^. o
#include <mach/irqs.h> V: r8 `1 r( q: p! \0 ^$ y
#include <asm/hardware/edma.h>
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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__)0 C. _0 m3 f% d
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN- I9 C/ k# P1 Y) @
#define DMA_FN_OUT
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#endif; K5 n7 s( x( k2 V; J% @ C/ x
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)" R! d/ {2 r q" [& J9 k5 R
#define STATIC_SHIFT 36 i! p/ J' n0 y: E6 o
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 215 W: s, `& o# G: n/ ^# U
#define TCCHEN_SHIFT 227 o( Q! {% a& K$ _9 w% }
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;6 G5 |7 Q0 f. K3 A5 p
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# U% n# ]- L9 m# u! P& s
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# C. C7 p; l3 W+ D+ T
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 P9 v/ u; R; k4 k+ z
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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;# b1 d" u+ I" U Q
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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;' a' H) d/ o/ n7 O2 K3 P
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static int acnt = 512;% E! s% ?. ~& }: A
static int bcnt = 8;
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static int ccnt = 8;) m4 {4 N h' s& B6 @: d
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module_param(acnt, int, S_IRUGO);7 G* p/ D1 Y, `6 d+ a a
module_param(bcnt, int, S_IRUGO);0 }) [- G; |) j x$ v c
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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