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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/*
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* edma_test.c
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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
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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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/ S# T8 j! U4 h9 [
* modify it under the terms of the GNU General Public License as2 A: @* {; x" W; a8 f
* 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/ l2 c m: W7 B* y
* 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.) S. h3 h6 u Z/ Q1 k$ J
*/
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#include <linux/module.h>0 _+ G Y3 l# I9 x# ?
#include <linux/init.h>
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#include <linux/errno.h> o3 ~6 s; t& {( e: j5 L
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>4 P. z e1 y$ N, b: k4 n! R
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>" x C7 h; u7 `- z
#include <linux/mm.h>
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#include <linux/dma-mapping.h> X5 [# `+ q" a; @
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#include <mach/memory.h>; d9 h- ~( J$ i" n% @; {. l
#include <mach/hardware.h>& @' n# c1 J; m7 o1 w. k' Y- L
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>% l/ A* j9 e ~5 d8 S! w5 ]$ a* P
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG' z+ B- I- y/ W
#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__)1 C/ j( g& M& u& Z V
#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
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#define DMA_FN_OUT: `4 v# A S6 |0 z6 f: f8 M* W
#endif& S! E' i6 k- p/ Q/ N
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)! I! T3 a. a6 c
#define STATIC_SHIFT 30 x9 F/ s* u I" \
#define TCINTEN_SHIFT 20' d. b5 q, K& T9 q
#define ITCINTEN_SHIFT 210 T8 t+ ~8 Y6 H" S1 u; a% B
#define TCCHEN_SHIFT 22' T. L* d/ l% f
#define ITCCHEN_SHIFT 23+ p3 N: H O/ t. C$ p
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static volatile int irqraised1 = 0;9 a( `8 ^0 n; r2 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);2 W1 F; x7 U4 t. a
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 r5 M8 w% c- j# i' K" P+ H
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;: W+ O4 r5 g5 B O+ Y! S
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;4 J3 Q' {2 ~5 | m
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char *dmabufsrc1 = NULL;, a3 _+ c% D8 Y+ B! ^
char *dmabufsrc2 = NULL;- \- t) |' A' I. t* F9 I8 |/ L
char *dmabufdest1 = NULL;4 Z$ ^; ~- ^6 |( L
char *dmabufdest2 = NULL;% L4 v- `3 [; L' ^4 Q j
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);: i+ l! D9 p1 S# z8 o" P8 B
module_param(bcnt, int, S_IRUGO);# ]8 y9 u: z9 V, Y* ?4 i
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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