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 application8 y5 G+ p5 U; p9 S3 W" I% e7 L% Q
/*
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* edma_test.c' G7 q4 ?8 ^/ o* H9 r1 O9 o( Z
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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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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE* k( a5 x4 M* r, j
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE. q+ h g0 k4 i* {9 a
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 f9 n1 a% _" ], G" o: ]' R& D5 U7 X
*
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* This program is free software; you can redistribute it and/or% X+ W4 W. J# ?7 k
* modify it under the terms of the GNU General Public License as& I* S0 ~+ b% h
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any. `9 A: Y S+ n$ d. F
* kind, whether express or implied; without even the implied warranty
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* 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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#include <linux/module.h>. j, z5 y7 i3 g1 O% L! H
#include <linux/init.h>: t1 `# f- K3 y# B$ j
#include <linux/errno.h>
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#include <linux/types.h>1 K" W5 z6 R1 x6 B
#include <linux/interrupt.h>5 v d8 ~ _# M8 S
#include <asm/io.h>
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#include <linux/moduleparam.h>( g. z8 Y* [. ~# |& }. @4 E# w
#include <linux/sysctl.h>6 ^# A& \! {$ Q- B) a' _
#include <linux/mm.h>
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#include <linux/dma-mapping.h>% Z* s: u1 e" f1 O
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#include <mach/memory.h>7 G* J& d* ]9 T' [- C. Y. a# c
#include <mach/hardware.h>5 i( ?- {* u+ s$ R
#include <mach/irqs.h>$ L. n# W, r& f; s M& H5 x
#include <asm/hardware/edma.h>6 H+ I7 m: C. U! I
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#undef EDMA3_DEBUG0 H2 c; e6 w( O- k& o; E% J6 c& q8 A
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG& |, ?0 ^( _* u* V: e3 v1 m) ?5 ~
#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else) V+ O! l3 I) G
#define DMA_PRINTK( x... )' U- L1 ] }/ g" P0 D( X* j
#define DMA_FN_IN
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#define DMA_FN_OUT: X4 A* W4 H8 E& q! U
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)) h" K; z5 d. C
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20$ ]0 I8 N& K& p0 g8 |$ z- f
#define ITCINTEN_SHIFT 21# b# j4 f; s. q% y9 \2 \" Q2 ~" p- b
#define TCCHEN_SHIFT 22% A1 r# F( e; B# a3 ?$ @- W# V
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;$ G% G/ b* j3 N4 Y+ x5 G
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);: u, U1 Q! C w7 ^" S/ O, T
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ t$ D5 p8 V2 K' k* F* A/ O
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 Z9 S$ l" H) `: \
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dma_addr_t dmaphyssrc1 = 0;- k0 z8 l0 E, |3 L; Z! W
dma_addr_t dmaphyssrc2 = 0;/ X6 v2 H& C( v: y) f* r
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;& y8 _% z# W- e
char *dmabufdest1 = NULL;+ k8 z) d9 S c1 M% ?
char *dmabufdest2 = NULL;2 N! S9 d4 @9 R% [9 h E' {5 _
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;3 z }* ]0 q1 e. @& @. k& @6 _
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module_param(acnt, int, S_IRUGO);* h5 y3 l$ o$ U+ C
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