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.c2 V% a. g7 {' m# v
*
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* brief EDMA3 Test Application" e9 J2 s* g: ]1 o) t3 }* A
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* This file contains EDMA3 Test code.( w: ?" X3 r) V
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE7 v3 b& w2 `/ G, u( A! @7 O
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.' U. }7 z7 [) ~2 _% P! d# _9 ^
*
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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 as6 `) {: G. {% T) ?9 U' R
* published by the Free Software Foundation version 2.- Q; W1 w& A4 B
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 G8 l1 M2 P9 y, K# s6 d* Z/ o
* kind, whether express or implied; without even the implied warranty% R5 m. K5 Z: x% @0 q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.' D+ F1 Q3 q: u/ r) k% C; Y
*/
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#include <linux/module.h>. }. I, W4 m8 o" X9 B
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>7 S2 Q# N! b3 z
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>. m& s* E \/ f9 H
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>8 T6 g0 g h9 x0 V( P% q# F
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h># l s" R6 }4 o! T6 u& O* z; a; F# f
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#undef EDMA3_DEBUG' d7 O6 r# o, Y: V5 A
/*#define EDMA3_DEBUG*/5 R$ b* k% t- R# p$ K
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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: j2 y4 d( D2 W) V+ [8 s* e; s
#define DMA_PRINTK( x... )& a) @0 a# v8 x0 y1 Q
#define DMA_FN_IN( h& A# E' X! w
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 M' C0 g& f5 R" U0 s/ V0 s
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21) ^# K) k! @/ F% c1 }! B
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 239 t* m g* h, s, ]/ r& y" U% `) x
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;: T4 Y( t/ H8 k* S
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 G0 x0 M, i* `2 }$ p3 C0 h6 O
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! V0 V7 t/ q) t$ d$ }
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 I% ^1 N g& [2 T& ~
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dma_addr_t dmaphyssrc1 = 0;& g* d# b U5 u$ O8 }
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;: e3 ~: ^! P( Z+ H/ l+ ]
dma_addr_t dmaphysdest2 = 0;4 N6 I' L7 s, r' D l9 G
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char *dmabufsrc1 = NULL;3 k- x B8 {, V9 V" j. { u
char *dmabufsrc2 = NULL;& n- p6 f: _0 t. b Q8 X
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;/ q2 ~ ], v6 h( l% n( O$ [( K" M0 [
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static int acnt = 512;1 D# |1 w8 H) o: P, w
static int bcnt = 8;: o0 [ k0 [) P. \2 _$ y
static int ccnt = 8;$ o$ G3 s4 I0 g: i
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);6 f- k, V2 F+ m/ a6 O+ t
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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