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 j1 i% Z5 z3 w$ ~
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* edma_test.c' G9 _0 m1 D" F+ [+ l9 C
*
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* brief EDMA3 Test Application5 H# e$ e- A1 h5 k
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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 SUBJECT0 @8 T( D2 K8 j3 J- o5 o
* TO CHANGE.2 p4 y* m& ^0 @% w
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 }9 B! W8 O6 [+ w' W, X7 \8 S
*
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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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*
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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% F3 k. p& l, [5 ]7 L/ s, d
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the' |8 C. a! y# B0 ?7 U# t
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>1 D3 T" ]' v# e$ S3 N6 \9 R, ^8 M
#include <linux/errno.h>" O( E1 X8 O5 d: Y( F
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>; X9 F- [ v' M# `
#include <linux/moduleparam.h>( Z3 D- c$ }1 u( d2 ?# F
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>( C6 w4 u3 [3 ?4 x W
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#include <mach/memory.h>7 o* k0 m% m/ k1 X! z3 `
#include <mach/hardware.h>- b/ W+ m2 y* K" u( A
#include <mach/irqs.h>1 M0 O% o5 ^' D1 k; O* H9 t2 e
#include <asm/hardware/edma.h>2 l: m% B% `- X! S9 Z: T
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/6 N" l# y5 @# X- i9 m; t( m* }
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#ifdef EDMA3_DEBUG8 `' l# @* {+ ~% M$ ]
#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... )+ u* {2 C2 O2 r
#define DMA_FN_IN
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#define DMA_FN_OUT: l4 {0 w' G8 t$ F8 J
#endif: _/ r1 @" U" A9 d" q
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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# k2 S/ y- R' T I+ r" m1 A
#define ITCINTEN_SHIFT 21* O4 n8 U& h- b, [
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23% ~8 o1 e/ e) G2 b( a. o& w1 H4 y5 ]* P
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static volatile int irqraised1 = 0;7 ~) W+ b* Z7 ? @ G; o) G
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);% Z( f" V* p5 N. D; j
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% v6 B) k; o1 o" M% z) i5 w! h3 I
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& o9 x9 X% w! D* e0 c
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;' q" R" z9 c5 h) a0 r. T
dma_addr_t dmaphysdest1 = 0;, d+ p' o5 c N9 y1 D
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;4 S. _- |, l2 U, \
char *dmabufsrc2 = NULL;! @5 P0 L: p; M, `9 O' d
char *dmabufdest1 = NULL;2 ?* e0 k/ ]; i1 k
char *dmabufdest2 = NULL;
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static int acnt = 512;& R' V3 j0 _7 u7 W! f
static int bcnt = 8;
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static int ccnt = 8;- |- z- Q6 y3 [5 n! W z
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module_param(acnt, int, S_IRUGO);4 _6 R+ _9 z8 Y
module_param(bcnt, int, S_IRUGO);; ?! x) w. P. I% r4 |
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