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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/*2 x. N$ U3 A) c1 C! n2 `: C
* edma_test.c) N% E" U% J9 ~' y5 A
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* brief EDMA3 Test Application3 X( H, o# }$ K
*
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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 SUBJECT5 Q5 j* p3 Z: o0 S5 T0 R3 _
* TO CHANGE.7 d% [) ^" K9 x
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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
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* modify it under the terms of the GNU General Public License as9 R; P2 a9 }9 L# {# l
* published by the Free Software Foundation version 2.% G* U+ q3 d& h& V
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any) O3 t# `; N- p$ I, V
* kind, whether express or implied; without even the implied warranty3 N( X: t0 ?8 B: c% ] L
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& |8 d. ]' s6 a' c# \5 C
* GNU General Public License for more details.
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#include <linux/module.h>" y* c# I9 ?) M: V+ c/ n
#include <linux/init.h>! b- D: X, e' G5 Q! n! K D
#include <linux/errno.h>
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#include <linux/types.h>9 L( o+ c9 m! q
#include <linux/interrupt.h>
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#include <asm/io.h>! l& E4 L8 I" |) x
#include <linux/moduleparam.h>0 X9 l! m* t4 C0 G# g* L
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>. ?: E! u& l. O0 K; x
#include <mach/hardware.h>/ t) c; d- m: l# d2 R5 d% u+ R
#include <mach/irqs.h>1 T- H8 _- R4 x. }/ ^5 a
#include <asm/hardware/edma.h>; Y" s7 r9 Z$ S* x* c
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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)
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#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
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN$ U) ?! J- m' X) e2 V3 ~
#define DMA_FN_OUT
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#endif, l/ o1 e% d2 }1 ~9 q+ t6 F4 G
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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
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#define ITCINTEN_SHIFT 21' J. m2 G5 R; M( \8 x
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23( F1 w1 b6 z% m7 S( o. u
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static volatile int irqraised1 = 0;7 m6 l4 H$ w- V# B" B6 w
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);- d/ f' A! a, ?; m; q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 b, A4 O( @2 S. x: J. v4 [
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' V5 l7 J, ^' y6 }* q- _8 `; C
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;$ u" G. t, w; G/ j
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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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 Y I8 M6 d8 O, T9 ?
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);( m S# d& C* q8 G1 p
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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