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% w7 w3 a9 ^' K# p, S
/*
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* edma_test.c
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*: W% M( C! [) X" A t! R
* brief EDMA3 Test Application$ c7 r5 N$ b+ n9 k( w6 Z
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* This file contains EDMA3 Test code.
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*- m% U, }# T3 ~7 t4 @
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE" K" Y; x2 p2 l! e) S
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.7 @2 ?* A( J. N9 }$ k2 D
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 W0 d2 u6 r* J$ V* f
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* This program is free software; you can redistribute it and/or/ f; x5 m" D& W5 f3 n
* modify it under the terms of the GNU General Public License as. o! k( F8 x' Z2 k8 Z
* published by the Free Software Foundation version 2.
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*. u9 G1 L# j9 A: p$ u5 B+ ]* _9 n
* 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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. T7 n: y& m% U/ g6 D
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>$ b, D! a: V5 y- o: o2 Z# _
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>* @4 R3 B# y7 D0 ]4 R1 x+ v
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>1 ]' s' G% k7 s: R$ B
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#include <mach/memory.h> s8 F* B! o+ H( }% R9 C7 G
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h># u q: h/ F0 F2 V; R
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/" a, L) l: X0 M; b% F( |
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#ifdef EDMA3_DEBUG& E6 x) E8 R5 b" S! h7 S
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 X, F9 e$ x# P- n4 ~/ |. o0 ?
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) k8 S! n/ S/ r0 |) m
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else( @. a( x$ D+ ]7 L0 F; f6 y
#define DMA_PRINTK( x... ) m# h. X; {( I; N
#define DMA_FN_IN- [. w/ Y( M. g2 ~5 {1 @5 r1 u
#define DMA_FN_OUT
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#endif' I. ?5 ]& @! M. s T2 c
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 33 u6 b6 n) G( [: H5 h
#define TCINTEN_SHIFT 208 o ^# b; q& q
#define ITCINTEN_SHIFT 21" g4 T) { k9 {/ K
#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;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 b. N% W9 V8 }; X2 A5 p
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 D3 [1 ?# D; c
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;* n/ X: k& i! w+ D! {% L
dma_addr_t dmaphyssrc2 = 0;! L7 G3 a" W7 m* Q2 S$ {' v
dma_addr_t dmaphysdest1 = 0;1 s* Z( F) c$ z- {6 Z% ?% A
dma_addr_t dmaphysdest2 = 0;0 C! t0 P5 z8 B5 M+ _' v7 j. v
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;( b7 H" f: `2 y* ~
char *dmabufdest2 = NULL;: q3 b: I7 a$ U5 w' `2 n2 g4 p/ {
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static int acnt = 512;6 F$ M9 ]( M9 P' I9 I
static int bcnt = 8;# B4 p" N: k2 s6 h! K( x
static int ccnt = 8;+ m. @& C0 o! T. b+ z- |6 V/ }
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module_param(acnt, int, S_IRUGO);( M" n% n) S$ X; w# M) n
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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