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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/*
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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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* 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.( i. v/ s% }* B) y* ]0 a/ {
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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/or* I: Y- V2 P' R& r- V6 b
* modify it under the terms of the GNU General Public License as; J9 F# O+ E1 ^5 b
* published by the Free Software Foundation version 2.% ~7 x4 R1 O* I
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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( \3 U7 m' ?3 i5 ^1 m; G
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>& ?/ i8 Y/ ^3 [# m0 U/ C# @% C f! N
#include <linux/init.h>
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#include <linux/errno.h>& r2 n3 f. J2 i' L. U) r; }8 e6 l9 D! u% C
#include <linux/types.h>7 O# `2 }" Q3 f- c3 M5 w- K9 `
#include <linux/interrupt.h>
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#include <asm/io.h>+ j" u) E- Q2 \+ l+ z
#include <linux/moduleparam.h>& Q' }& ~ c h ^
#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>% m) x$ M4 T* V
#include <mach/hardware.h>
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#include <mach/irqs.h>3 w# S3 e# k) g2 f4 h! \" O. |0 c+ Z
#include <asm/hardware/edma.h> C7 X) P) Y5 d7 t6 ]3 y( A
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/4 a8 z+ c) S( o& g; O+ w1 {
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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__)4 t7 |; c, n3 `: i8 A0 C
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ W0 z/ e. h& z# i
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN: ?: b" V" v% D0 T0 o3 p
#define DMA_FN_OUT, r: { z' v7 M) n, ]; n$ G
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 W2 W/ o' k& x3 y6 K. B
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20/ @) U, h1 M4 m3 k; X- R
#define ITCINTEN_SHIFT 21# I5 m8 r' w2 h: y; g7 J
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;2 J& B% F( h7 y1 C
static volatile int irqraised2 = 0;8 Y7 \ ~8 Z5 W4 J, u7 c2 W+ F+ W! e: {
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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);- ]4 Y" l6 i- X% }
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! V8 V' d$ t- d: K% y
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dma_addr_t dmaphyssrc1 = 0;1 P0 E2 t" P9 n3 n
dma_addr_t dmaphyssrc2 = 0;' y) ~* q/ s9 C* X
dma_addr_t dmaphysdest1 = 0;3 o7 ]% @# Q. k/ ~$ s6 _3 \4 J0 E1 g
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;8 [" \4 T8 Y# `' o& d3 T
char *dmabufsrc2 = NULL;" w) P, S3 r7 L6 X" x3 c
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;) I9 v- |6 N* k# ] M% Z5 T
static int ccnt = 8;: q$ g& [& N* u' T5 z L
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module_param(acnt, int, S_IRUGO);
module_param(bcnt, int, S_IRUGO);8 O5 {/ L. y. h0 ^
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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