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 J& l' w4 [7 r9 S. x* \
/*
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* edma_test.c6 W" V: g2 |0 J
*
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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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* 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
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* TO CHANGE.- V1 e6 h) g* z" N# s# h
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 s4 Q2 J2 T9 [2 v; z 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
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* published by the Free Software Foundation version 2.. O: g# S2 ]1 h/ F& h$ w
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any/ W+ o, {( v. m1 w
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the4 w7 c. d6 {8 Z# w/ m
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>- O$ P5 n. [8 \5 a( {2 f% s2 o* C
#include <linux/errno.h>
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#include <linux/types.h>; b4 N/ l* e6 \3 ?) P( P
#include <linux/interrupt.h>
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#include <asm/io.h>) Z9 j: x1 ^; _
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>' p% W8 c+ v; W' y" Q, s
#include <linux/mm.h>* v# V! R% Y2 p1 p
#include <linux/dma-mapping.h> m2 J) F. l0 p' K$ x2 S/ 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>' W0 J6 ^' f& k. o
#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__)* U$ q3 V+ \6 U) ^4 D8 A( N% |
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)' Y# x8 i" a) q. p
#else
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#define DMA_PRINTK( x... )# k5 I! C6 t4 e3 K
#define DMA_FN_IN
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#define DMA_FN_OUT1 o8 b% r2 z- ^+ o7 E! P
#endif+ | b9 N/ |* t b+ e$ j/ t" J
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 32 c# a# c% F# P$ _, C
#define TCINTEN_SHIFT 20" ~. A" @" V% J
#define ITCINTEN_SHIFT 21: f9 ?% v" U! {" O
#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;0 P. o. t( q* Z. ^" F/ e1 u
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* W$ v2 [" c0 G* h: X6 ~( L
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) Z) A7 W3 `; Q3 E A7 x
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. I* C2 A7 P" ^* g5 {; B- S0 k. F
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dma_addr_t dmaphyssrc1 = 0;; e5 V; d+ h* q+ O- i& `
dma_addr_t dmaphyssrc2 = 0;) H9 W# q' G9 i6 l
dma_addr_t dmaphysdest1 = 0;
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;# ~- ^, u# u! U1 l" v4 l
char *dmabufsrc2 = NULL;) Z( T5 X1 B- a
char *dmabufdest1 = NULL;, }% r2 G+ [4 {6 a5 h
char *dmabufdest2 = NULL;! Z% W4 j. } N g
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static int acnt = 512;1 p$ e6 F0 K2 \# J
static int bcnt = 8;
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static int ccnt = 8;, r- V7 {- S0 N) X4 \- A1 u
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);% X F4 {3 m. j* [
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