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" P& u. }& j) X0 }
/*5 S6 @: `8 c8 [) z
* edma_test.c. }/ j" |' f/ L4 o. m. {
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.+ `" Y. Q+ g# |* F
*
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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) [ r/ D8 O1 s5 P2 k
* modify it under the terms of the GNU General Public License as) y9 z+ z& q3 ^) i3 d
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any; B- P- e& C* H* P5 X
* 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.2 a/ L) k }% K' C0 B# z' z& `- y
*/
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#include <linux/module.h>& s) N' @9 d d) w, ` v
#include <linux/init.h>0 c' A" K7 J1 e/ L# T, t* Z3 y
#include <linux/errno.h>
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#include <linux/types.h>' ?; r. C6 T0 h
#include <linux/interrupt.h>: E& I$ c @$ z6 z
#include <asm/io.h>+ [8 _( Z( n7 m8 \9 K, X
#include <linux/moduleparam.h>
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#include <linux/sysctl.h># F' ?6 T# X: x) E+ x
#include <linux/mm.h>% z6 ]# `3 S4 q0 Y. b8 G9 N7 l
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>7 I9 w+ V( X" i+ T$ M# ]
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>9 ] V9 G5 _* {. J
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/8 {' |: }# u$ O) L- g: c
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#ifdef EDMA3_DEBUG/ N% G% D) ~7 M4 ]- j5 d8 V2 U
#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__)! S! @4 o0 w, m2 n' e7 o
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__) V: Y& J# s5 O7 s" \% \, Q1 x
#else
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#define DMA_PRINTK( x... )) U) A, _8 ~, k1 [2 S5 T
#define DMA_FN_IN4 i0 N$ G9 G! \2 }" p
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)0 O: Z N3 f4 ?9 I1 d4 H
#define STATIC_SHIFT 3( A# L$ ]* k& ^
#define TCINTEN_SHIFT 207 C* [( [2 G5 ^% U7 g4 J, b4 Y! I
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22# z. @4 \: [! r K
#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);7 z, j: j' Y8 [, }4 C' h
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 [' n* ?% N4 m- r* K, j6 R/ `+ B
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;
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dma_addr_t dmaphyssrc2 = 0;4 d( s. n* j! ~3 z
dma_addr_t dmaphysdest1 = 0;2 e$ Q# x) ^* J. G8 Q+ F
dma_addr_t dmaphysdest2 = 0;% T8 H6 e" o/ m6 C
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char *dmabufsrc1 = NULL;% w% q* V5 Q8 z" 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;3 W$ Z% f) G8 L
static int bcnt = 8;: C0 _0 M9 U9 x+ X# a* K( _
static int ccnt = 8;6 d8 ~3 h, C7 O, T9 o- M
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);: u* M% F7 |( N$ \
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