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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/*" o5 o! H( U/ s1 y: {) t+ b
* 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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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' d6 b4 @. X2 w
* TO CHANGE.1 R4 [6 n5 d, }; j( d
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% {# m- c( R# e* W$ S8 \ d, t7 I
*
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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
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* published by the Free Software Foundation version 2.) ]6 D3 ]' @2 g+ o
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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 warranty, W% ?$ | p8 v! V6 V5 g
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ B" w3 [) S/ p: n: w9 M
* GNU General Public License for more details., t& m$ l- z3 k# V0 D6 ^) I5 r
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#include <linux/module.h>6 I$ g: J r5 r6 k0 e/ N1 U
#include <linux/init.h>
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#include <linux/errno.h># A" Z. y; l: o: ]/ z
#include <linux/types.h>) E' ]* r' t6 V6 p! X, f
#include <linux/interrupt.h>* @* [# s( L% u; R) l+ }" x' l
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>/ d8 p& t. r7 \4 e' G9 w( d
#include <linux/dma-mapping.h>
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#include <mach/memory.h>/ m( v$ B3 a4 N# A6 G
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>; F* m7 x' ] M8 R! Q* U# X
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/4 F; r8 A0 |% d$ A! f2 ^' `
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- [# E) z K" n* w
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)% }9 f4 C3 o- W
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)1 d. Z) u9 K6 S: S
#else. h& u3 o, Q, D+ l6 K3 s
#define DMA_PRINTK( x... )# U$ x6 I+ }4 F4 w0 J4 ?- f% `
#define DMA_FN_IN$ N% i. f& N6 G* V
#define DMA_FN_OUT
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#endif
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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 20' C j$ t: n0 q/ H+ l: Q( g; n+ V
#define ITCINTEN_SHIFT 21
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#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);! F1 Z3 h6 Z- {5 p+ d
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;! l4 P0 Z& F3 `1 t" g
dma_addr_t dmaphyssrc2 = 0;1 Y6 Y3 Y) [! Y8 v. n F( B
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;+ F7 k, D; W+ t- _( l) X* i3 |+ w# i
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;% c3 X2 l. o# Z- B, [
char *dmabufdest1 = NULL;( t% D+ s& n C# w% z5 ~* q) j5 `
char *dmabufdest2 = NULL;7 ~/ r! N& [& U2 o! s6 P6 g3 s3 ^* [
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static int acnt = 512;5 O$ q% `+ r: S9 c7 q" w* _8 ^2 J. I
static int bcnt = 8;2 f/ ~7 o0 H e) d
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);0 E- H2 X' J8 |# y# u/ [+ r; q
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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