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+ X8 r8 w6 U4 O9 I6 V
/*
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* edma_test.c6 i, S7 H" \1 @6 F
*
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* brief EDMA3 Test Application7 p9 v z( V) [) e! V
*
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* This file contains EDMA3 Test code.9 g; y6 N; }1 s
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% h6 W0 {4 N& G' S& m# M
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT2 ?% N ~& r6 o6 F2 }9 X* \
* TO CHANGE.. r* q6 T. P+ n: h7 J) }: | |# t
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 s- T d0 W, K/ 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+ E, _9 c4 ^* H& A" p9 |
* published by the Free Software Foundation version 2.; {" Z* `5 D/ B
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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 warranty9 W9 S* F+ }6 {3 t; T0 b2 l4 `
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, O. H" [, i: Z+ [9 l
* GNU General Public License for more details.
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*/$ Z5 I, @0 w! G4 S
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#include <linux/module.h>- E: f( d! K1 @
#include <linux/init.h>* J; j" a6 {) x- E' j) K: y+ z. f
#include <linux/errno.h>- u3 L7 E' Q' v) O% k
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>( t% I; n: F6 h3 U- v% F
#include <linux/mm.h>+ N5 P9 I) Y( X
#include <linux/dma-mapping.h>
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#include <mach/memory.h>0 z7 B$ A$ _1 c
#include <mach/hardware.h>) I0 h: {1 V! N4 J$ h
#include <mach/irqs.h># Z) s4 `; a1 P5 t$ y4 I
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG7 O4 h% D. y- a
/*#define EDMA3_DEBUG*/& A1 y. ~2 l+ |7 _
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#ifdef EDMA3_DEBUG& W+ [- l1 @: |! m6 d
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 N; H0 W! G! E1 k
#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__)
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#else$ ]/ }1 ~. K( g& x* ~ L
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT3 \8 f$ j* V" v0 N+ h: K
#endif) ]* c3 {3 K: g' K# \
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 207 u! ?6 R C* v7 ?
#define ITCINTEN_SHIFT 21+ _5 O" ^. c& _- x+ X: m8 }$ c" C
#define TCCHEN_SHIFT 220 ?: M7 k, [8 w+ D: {7 v& B* r( |2 \( D
#define ITCCHEN_SHIFT 23: z+ {$ y( F: `2 G! V J0 d7 B
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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);
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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;6 f; g3 `+ f6 a( e4 S) L
dma_addr_t dmaphyssrc2 = 0;0 L2 G! y9 b' r6 n+ C- g
dma_addr_t dmaphysdest1 = 0;( z' a" e# w3 s: h0 v& h
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;* W- R6 G5 C% Y
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;# r6 o2 x4 }0 t+ P4 z9 h' F9 d! Y
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);: s3 A5 r, w+ b; z
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