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. i* O0 V) r* V) Y5 D# d5 {
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* edma_test.c
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*
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* brief EDMA3 Test Application K) T _" L- Q2 L7 P# n/ D
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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( U% ~( z' P3 F+ I
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT* ~: n: [6 _1 P$ N
* TO CHANGE.% }4 t# m# I7 A0 g5 j' ~6 K0 @
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 Y- Q3 ?! ?* m8 c
*
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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! a, i2 |. Z8 o k. ^( u. Q
* published by the Free Software Foundation version 2.2 n* W' S' }. e7 Z6 l5 k% ~
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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; j6 N# y* I8 V0 j) [. n
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.9 Z3 n7 h) k0 B5 Q
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#include <linux/module.h>5 G$ A6 }* A( Z$ k* j5 ^4 P
#include <linux/init.h># x" Y3 t/ U/ J+ ]
#include <linux/errno.h>0 c0 v+ I1 L" j" p
#include <linux/types.h>7 e5 w7 L3 v9 h* k: Z$ X5 m1 Q& W
#include <linux/interrupt.h>
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#include <asm/io.h>' _/ b' s- E7 d+ _1 a; W4 ]
#include <linux/moduleparam.h>4 r( x0 y: b! r2 p2 B
#include <linux/sysctl.h>9 v. z( X9 e; K5 t4 s
#include <linux/mm.h>
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#include <linux/dma-mapping.h> q) D' C; ~9 S1 _0 ~
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#include <mach/memory.h>
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#include <mach/hardware.h>2 d6 f( i4 m; l' d8 L1 M' K% d& X
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG3 u+ R' y3 S |$ ^- j, v* q
/*#define EDMA3_DEBUG*/& r1 W) ?- S3 f5 R7 S% ^' 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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT' V! W2 @3 U R, |
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3, J6 e2 a' v2 y4 N8 }
#define TCINTEN_SHIFT 20$ m) ^; E" J+ V9 U Q( x
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23# @8 d1 ]2 P' D# `
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static volatile int irqraised1 = 0;. ?' Z2 [3 u- C- M
static volatile int irqraised2 = 0;. q) q+ m. b }6 f
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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);* E: D1 ?- G% L% l P4 Z
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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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;/ \. G- s1 u5 z% ~: K' S
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL; { n" g& X ~- r- a
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;& w. H/ W" ]# ]' V7 M1 m" l
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);+ K' X" F3 ]% F
module_param(bcnt, int, S_IRUGO);7 V# T' [ y" `) Z5 b% N
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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动