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 application1 t. W) i! t9 O4 I3 p: ]! X
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application1 v6 K, X8 x. l* w
*
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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; I4 x7 x6 k: h
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/1 o2 A$ q# b/ i
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* This program is free software; you can redistribute it and/or) B5 }# M8 ]+ O
* 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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* 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$ v7 K3 A" @5 R$ Z: a9 ]" P" v
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the! ]" o& M2 e) K7 y7 f
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h> P$ M8 q* J% k+ H" U
#include <linux/errno.h>1 ]3 e' y2 e# O5 M" ?- i$ N
#include <linux/types.h>
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#include <linux/interrupt.h>7 Y- \" N! [4 [! V q
#include <asm/io.h>
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#include <linux/moduleparam.h>! I1 J' O. r: s: a( W
#include <linux/sysctl.h>' B2 G# s" W9 S- ]
#include <linux/mm.h>
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#include <linux/dma-mapping.h># _0 [0 o+ e5 X9 [, G( Z
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#include <mach/memory.h>% N, U2 N3 C& I& G. S, m* v: F& F. ~
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>% f6 E( o0 Z/ ], }2 p* j
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#undef EDMA3_DEBUG" N( _; a" a- C0 Z: S$ |4 f
/*#define EDMA3_DEBUG*/: z0 X* e; o9 ^5 P1 ]
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% @. A8 s6 V k
#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__)! X* \. K/ v$ A# ]2 K3 f6 R0 Y
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN2 E- i* Q3 k. Z/ }5 x, d' a
#define DMA_FN_OUT7 d6 A1 l6 Q9 N) Y7 \
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), E/ v4 F8 d) }8 D+ k6 ?, Y" u
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22( l7 g& o Q( |) j6 E
#define ITCCHEN_SHIFT 23* P2 L2 r. W* ?: L$ q9 l' R3 [
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static volatile int irqraised1 = 0;4 W1 T8 Y! t7 W" ^2 H" H% k% c& Q' m
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 f8 I6 x" F, l6 N' E4 n9 i5 C8 O/ m [
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;9 O! \1 [- w5 ] r
dma_addr_t dmaphyssrc2 = 0;# `9 U9 ]$ }& A+ U+ K* b$ j
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;: X N3 \$ x4 |+ } X" G
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;- R" f. F: \" {2 B
char *dmabufdest2 = NULL;' `' c5 d1 t$ w" W( C# E% q2 M
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static int acnt = 512;4 R" I0 @, E w0 S: Q# @4 R/ R
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);8 {2 X5 g+ s0 K6 ~7 ]/ D( w
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