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+ W( |, C4 x* m2 c( D: r( P8 m8 n
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application' E, S- }! D! ^$ F2 I% h
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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 BE9 v7 _7 @: o+ M4 P ~
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' ]3 V u" v7 G. i
* TO CHANGE.+ x, i+ ^& s3 L; q1 |9 j: F+ i
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 T. d+ c; Q- k/ v! p! p
*
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* This program is free software; you can redistribute it and/or- P+ {9 K3 P+ A
* 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% S/ ` f# G$ M7 ]/ _' o
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any- a8 }! N; ?! w5 c4 d/ k+ g* T) \
* kind, whether express or implied; without even the implied warranty& ^2 e v+ {% D5 s( }4 g9 c: C, v2 T
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* X0 y- _5 C, s; X+ m _
* GNU General Public License for more details.: O! o- V' H' k: p% U
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#include <linux/module.h>) ~8 n0 l6 Q0 r0 d
#include <linux/init.h>8 q T5 ]) j p: d
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>7 \" ~6 N" n6 h& F. q4 W
#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>; T" d* I0 ? {) q: {# x, E) M
#include <linux/dma-mapping.h>3 V' V0 q, M9 T- t# [4 H
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#include <mach/memory.h>% ~ X8 w+ m. g$ F% Z* w$ P
#include <mach/hardware.h>0 ]! {1 }8 ~& J; s0 Z E8 H
#include <mach/irqs.h>: N* H6 V; q8 w; C& I" i3 B; ]- v
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG7 ]5 f/ C# y& s0 f
/*#define EDMA3_DEBUG*/% X Y6 E) Y4 o% ~: u" o4 T' U7 [
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# o# H8 ?) y* Y% {5 t
#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__)' E7 X/ J' q2 @9 S8 \# D
#else
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#define DMA_PRINTK( x... )- Y, i+ m& K: D3 v; ]! C/ l
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)/ C$ K6 Q( G2 {: P8 X* I: y
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21) h. s* S6 Q" U2 }1 {8 |0 r
#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; u. J' r; ^8 k$ x
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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);# W, i" h* m4 g& s) S
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 |6 S5 Z' M3 m' _/ t; W' p
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dma_addr_t dmaphyssrc1 = 0;9 o" f" G5 Q! g9 n- }5 F
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;2 R! F& A. u- L$ P/ n
dma_addr_t dmaphysdest2 = 0;; b$ `5 @$ O0 @ i
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char *dmabufsrc1 = NULL;3 j& S6 h; ?0 V+ N) |1 H+ A
char *dmabufsrc2 = NULL;( y, W; x1 N F, q/ A
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;3 h* w! e2 X( q- Z
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;) l: D0 b& \# _; }9 X# l' X
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module_param(acnt, int, S_IRUGO);: ~ z# Q- ~" z$ y3 `6 x: O! d) p
module_param(bcnt, int, S_IRUGO);$ {5 ^# Z* l1 f2 O
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