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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* 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.; I, o' I! A4 H! c
*
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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/ F$ Y8 n5 X+ K3 z
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% _9 c4 l% Q; `
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* This program is free software; you can redistribute it and/or9 }# E0 P9 h. q# H1 @
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.; }; y$ f! X* _4 E
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 t' c& Y+ G1 P# g3 z+ v5 v
* kind, whether express or implied; without even the implied warranty$ i P$ \# R! ~- z) z+ [, a+ g
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the' `0 ?! z/ ~) V! C
* GNU General Public License for more details.
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#include <linux/module.h>% s2 O% V& V) E' N
#include <linux/init.h>% }, Q' ]; n+ a" B$ P
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>6 l/ H- r% g4 M3 y4 Z
#include <asm/io.h>
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#include <linux/moduleparam.h>$ f, U2 S4 W6 v8 i8 t3 n9 p# H8 E
#include <linux/sysctl.h>
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#include <linux/mm.h># ^: z5 B( L: y' U
#include <linux/dma-mapping.h>
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#include <mach/memory.h>. ~( o0 p$ B: v7 y8 J; {6 e
#include <mach/hardware.h>( U: K* u$ v5 Y$ P/ U3 G, C
#include <mach/irqs.h>7 Q; q& }2 o' B2 [8 P" D: m/ v
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG1 C% t. W4 [8 w, N' F8 [
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG' {6 ~4 Q# [/ j: C2 t
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 L) t7 G! m* V2 L' ^
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__), {( o1 k7 s/ G+ k! d
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)- r- y. C6 a+ }/ ]' H
#else" |+ \. F: w. u
#define DMA_PRINTK( x... )# U7 u1 M1 y* O4 P
#define DMA_FN_IN+ q$ Q6 c3 {( K e
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)% i% j' \' ?5 N) X1 j
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21. g6 v" P0 |. [' I4 ]2 t- ~
#define TCCHEN_SHIFT 22' k5 h1 G# h7 f2 p8 @
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;2 r( O- a' ?4 A, A
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);
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dma_addr_t dmaphyssrc1 = 0;+ G5 I g' o- J" q' q5 a
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;! S% K& d1 `9 A& ?
dma_addr_t dmaphysdest2 = 0;, C4 k3 K( x6 {
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;# M( g5 H9 p+ G2 F6 }1 R! S
char *dmabufdest2 = NULL;4 f w. }/ `5 T4 }
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static int acnt = 512;; r2 s8 L; a/ j5 l3 ~1 O2 W. u/ H" X
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);; u: B, C8 R# I a5 m# z
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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动