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 BE0 {# U6 t, V2 Y; Q) h/ s7 g& B
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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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/or4 x* y: B" h- i+ w+ i, z- t5 l
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.9 P: u! P$ R, O# } C- t
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 Y( p; h. T' @1 i5 S' p
* kind, whether express or implied; without even the implied warranty) C, X# M+ S8 D2 { r& M) L
* 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>, v6 O# T/ u L w: d; v' L- ^6 f: [
#include <linux/init.h>
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#include <linux/errno.h>
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#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>3 d- R4 `! ~- t0 w" n+ x
#include <linux/mm.h>" p% i3 Y e- M$ o0 r' H2 X
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>- N$ N0 ^0 V8 V& }$ i- p4 r- U; U1 A
#include <mach/irqs.h>+ G# ~7 m( K1 k" ~ X
#include <asm/hardware/edma.h>8 t) o) I8 F- I" i4 N$ l
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)& K/ ~! j0 C$ b: t2 v. f" k M& G' 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__)8 u& H6 B$ W1 j; F- _$ j5 x$ z0 r
#else: L+ n7 O6 S- V! [3 P) A) F5 r+ \5 x
#define DMA_PRINTK( x... )0 ^5 t7 n* r3 i% A; }6 X
#define DMA_FN_IN( _' l% X b0 `0 n) H
#define DMA_FN_OUT
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#endif6 I8 b: l! u, {. a4 l9 [( S$ i
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 39 E" |6 P2 a4 H) E* x$ s, r8 @, G
#define TCINTEN_SHIFT 20- R m' @5 f2 N% t& X
#define ITCINTEN_SHIFT 210 f3 U# c) f1 N
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 233 s; p& A+ O% r$ T/ l) `
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;/ p) G/ i2 n' |) H4 O
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 z( e7 f5 o4 [" i6 C4 F/ L
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! U7 J9 W$ U$ Y3 O) R* M. y
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;1 p6 |0 ]6 y0 p) l, O8 I: z
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;# R: ?* x! E% }: W( i* N: B
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;6 E, P6 U8 M! v# {- D; e2 ~
static int bcnt = 8;6 L) l, B5 ^4 u# j+ X% _0 Z( v
static int ccnt = 8;0 h8 }" x: }9 o* J
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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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