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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/*
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* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: i3 C: b2 d4 M: K; T+ J) O6 s/ K
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT$ i# @5 K; R8 R' p, ~2 |
* TO CHANGE., `. I" s8 z3 Y
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or# u$ e8 _. p6 ~, n5 K, G
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any1 a, G, i1 P; c4 u3 @
* 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./ w( t0 L3 E9 Y; U; ~$ e. ?
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#include <linux/module.h>
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#include <linux/init.h>% {" `' N5 u! V% y' O
#include <linux/errno.h>5 X1 r- T. H6 X3 t% @, w, d
#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>- l( a! A& O0 {) }1 E; ^# t8 }
#include <linux/sysctl.h>) A7 x' t# M$ u. l; g7 B
#include <linux/mm.h>
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#include <linux/dma-mapping.h>- C; C p$ k2 l
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>; N, C/ F, ^9 t' g
#include <asm/hardware/edma.h> r* [3 L e1 b! q* c" `
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#undef EDMA3_DEBUG( }2 A: M& g9 T4 G5 a4 G/ u
/*#define EDMA3_DEBUG*/. }( R S' G" Y0 h E
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#ifdef EDMA3_DEBUG9 k$ r8 S2 y# _
#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__)1 Z& P( S% }! w( Z5 f8 @
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT$ s9 w9 L- |2 N* d ^
#endif' h; Y% r, J( ]& l) v; I( S
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)& F# u% M/ p. Q- M+ h2 t/ b* h
#define STATIC_SHIFT 37 r/ w' H* G( j! |, L& y8 u# W
#define TCINTEN_SHIFT 20" e1 s0 ?" O# n! r7 T
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 228 t* S# g2 J3 k$ O
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;" t" S5 C8 \- |5 l: H* ]6 n+ @
static volatile int irqraised2 = 0;- m# ?9 a! s2 e
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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);5 r5 _+ [. p. i
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" [, H# M% Z7 O s
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;% A2 w( c n- _# {
dma_addr_t dmaphysdest1 = 0;: D/ {2 Q, l+ \
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;/ _& j5 N4 A- Y* Q/ }
static int bcnt = 8;! _0 \/ G$ R% o
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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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