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$ @8 Y3 Z3 e4 V3 R. s6 Y8 B7 k0 C) n& c' R
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* edma_test.c' Z, c# F. Y& {0 g" b7 D" Y! X* f+ B
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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* d! G( z7 \3 T
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.* c' a! ^3 M# S5 ]) v
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; W9 N2 V* r* r# @# t# v
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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, A! v, f7 g/ o& i; n! {5 b# J& _
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any& D2 r% g5 Z$ B0 D; e$ a; Y( z
* 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.4 i, ^% O& S( {; s3 y: q
*/
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#include <linux/module.h>; `6 u% Z7 ~$ m( d! R
#include <linux/init.h>. q+ F( L9 q; E- o
#include <linux/errno.h>
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#include <linux/types.h>. b! x6 E" N8 f+ `% D5 R( s
#include <linux/interrupt.h>3 G5 v) G; m6 U2 m# |8 E7 |
#include <asm/io.h>
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#include <linux/moduleparam.h>* c7 Q6 y: G5 g- h
#include <linux/sysctl.h>- V, ]" A9 [* Q: r' w
#include <linux/mm.h>
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#include <linux/dma-mapping.h># Y4 N5 z9 s2 z
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#include <mach/memory.h> u3 F8 R, {6 X
#include <mach/hardware.h> {7 L* J- P$ B1 O$ A+ y! w- s U' S
#include <mach/irqs.h>( j, E9 ?3 W) }' R6 ^! @
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG, S: U9 x0 t/ K; L/ L1 }8 e
/*#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)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)" [" q* d5 ]1 N% }3 i
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)3 J2 ~8 ]7 F5 J" y
#else; G& [ \8 T, o! E( N. Z# P
#define DMA_PRINTK( x... )
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#define DMA_FN_IN- R& [ X0 T/ y4 K; o5 Y
#define DMA_FN_OUT( e6 ~7 r( J2 j- u `/ u
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3% q8 P% i3 i# x
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21$ m8 x9 @+ ?0 B1 f
#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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" H- j1 ]# i+ S, r x; P
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;, c% q4 u4 x; U0 P5 o# ^
dma_addr_t dmaphyssrc2 = 0;5 J4 I7 w' W! N+ P
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;; L' P: t( \; R. h: W+ L
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;6 Y' D M" n: w N2 z" _8 E
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;8 q; y9 i p5 L0 @
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);, Y0 y8 c) |# V$ P
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