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, G! r) U' _+ H N$ n4 @
/*- Y- G* h3 J1 A. @! c: h
* 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./ Z3 `# N7 _* _: h% ~: _: b
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, e2 G3 j* b! D' Q8 j
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT5 X" }+ O {9 w, n5 ?9 }+ i
* TO CHANGE.( H1 L3 d9 w) ?% |# @1 j
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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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.
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*0 _- J4 r$ F( y! W
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty6 @; S! m( \7 V. d; A' U# a% 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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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>9 ?2 ~0 d( ?/ R* A' `0 }: s
#include <linux/types.h>8 [6 M0 ^* U s9 ~& c ]) B
#include <linux/interrupt.h>6 ?# m' W, l/ T9 D8 z9 g' |$ z; g
#include <asm/io.h>. L7 u# j* ~3 r
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>* ~" }9 e; B8 m: e- v
#include <linux/mm.h>' j O$ ?4 V; N- y G
#include <linux/dma-mapping.h># O$ z! e3 U6 I4 S& [: e
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#include <mach/memory.h>9 w( K3 d! j+ \6 v+ c
#include <mach/hardware.h>
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#include <mach/irqs.h>2 h, j8 y7 |7 y5 M% J) R
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG7 g) U* m2 K& {+ Q) Z9 g
/*#define EDMA3_DEBUG*/& p, T2 l3 L" h1 i# E
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#ifdef EDMA3_DEBUG h8 C4 h8 A0 b* M
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 L% u6 R) y+ \$ J$ X
#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+ r" ]- I, L7 o2 q* e4 Z
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT4 m9 e9 A: C! l3 U" ?
#endif' z: u! X; p; w' t8 B, E
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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 203 R" h9 R% W. r4 G; Q5 w- \
#define ITCINTEN_SHIFT 21* Z! b4 {' t8 a1 Q. i
#define TCCHEN_SHIFT 221 t5 D- i) @* x1 i8 [' q
#define ITCCHEN_SHIFT 236 A: Z" @% Z* e! K% ]1 ]
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static volatile int irqraised1 = 0;/ K$ m( u! R9 {6 l. x8 T6 o( j
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);3 \' g5 L7 a" ~3 I9 E
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! e# A7 l: |6 s" @' @ ~
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;# P4 _3 n6 p+ m3 |0 ^
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;5 h3 O' p" B2 q8 C/ [( o7 Z
dma_addr_t dmaphysdest2 = 0;0 K5 E( E R: H
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char *dmabufsrc1 = NULL;& T+ J+ T4 j. @, ~
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;3 o' H7 h1 Y4 T$ e/ K! n
static int bcnt = 8;
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static int ccnt = 8;/ B k; q0 f# X5 g
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动