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& p8 b( _* J3 U$ H8 |# D0 r1 M+ i
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* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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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 SUBJECT! z# ? t1 l: J
* TO CHANGE.* d$ | P4 e/ A$ U
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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$ `$ M) A3 L v# n, R& {
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.' R9 [: N( q h, O, U
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 n8 b" e a3 M: q
* 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>1 f3 {4 F7 o8 J0 G0 ]) S$ {. X
#include <linux/errno.h>
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#include <linux/types.h>' k( e6 ~2 j% G- p$ I
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>. R. P* D$ p# h
#include <linux/sysctl.h>% Y; A4 ^# |: B2 m+ t
#include <linux/mm.h>
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#include <linux/dma-mapping.h>4 L% m" R) u- h7 Q6 i; s
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#include <mach/memory.h>6 A; F" e) l4 D2 ~7 K
#include <mach/hardware.h>- M. j1 t# m4 k' C' o
#include <mach/irqs.h>& v+ A q" H5 Y
#include <asm/hardware/edma.h>$ R" ~* ^/ b+ v$ K: t! D
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG* F% h$ \" }7 K9 p' G: w
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ J4 {8 H4 {/ m# P
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)* W: @2 w! w( s; T- ^$ r
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)5 d$ S3 n5 B2 j( B8 X+ e2 g# e
#else. j4 ]5 G0 y2 W/ ^
#define DMA_PRINTK( x... )
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#define DMA_FN_IN! [. n' ~/ Z$ D0 w8 g5 t5 W' h
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 }! V5 ~7 y5 f
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 205 P* ~7 t& }3 t9 \
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22. g# ?& n s( K+ e
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;4 p( {" ]- l) _9 A, t
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 P" b5 i1 i: F5 d# G- g7 |( |
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 M8 H/ f, U) z, h9 R: ^
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;5 C3 T; P `: i- p
dma_addr_t dmaphyssrc2 = 0;: L9 \+ A- P( F8 b
dma_addr_t dmaphysdest1 = 0;4 j' Y( w$ q, U7 l2 [
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;! s2 O1 X2 s! x1 o7 b: I
char *dmabufsrc2 = NULL;* N# b/ K: F' o( A+ F& I
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;: o, g* s' V; W- J4 a& |+ U
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);$ W& R/ o1 f) U5 E( y4 x9 I* k
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