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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/*8 c% A) h7 W( A. L A
* edma_test.c
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*
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* brief EDMA3 Test Application" U9 c) d2 M* W9 M: U
*
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* This file contains EDMA3 Test code.9 a5 ^5 W8 I" @. z- ^2 x: B' E3 k B8 K
*
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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
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* TO CHANGE.9 o0 ]1 \5 |3 i( g1 s
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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
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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 2.2 n0 s0 l) ]# ^" e/ G9 j2 |1 w
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any! o% O* L" s: d/ L: }1 Y
* kind, whether express or implied; without even the implied warranty" F- w O) v4 k8 z' S' C2 y
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>. V& D) r! o) E
#include <linux/init.h>
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#include <linux/errno.h>; B& X/ s# Z3 }0 t
#include <linux/types.h>7 r# v8 O3 m0 P& ?, B' h
#include <linux/interrupt.h>4 |- f# z9 |/ ^$ l8 I+ w1 \
#include <asm/io.h>
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#include <linux/moduleparam.h>: b1 {8 i* d8 Z6 X7 E
#include <linux/sysctl.h>( I0 ~" o! X6 o1 P$ @* D2 W$ f
#include <linux/mm.h>7 \2 W4 t2 A: O8 X6 G" s$ X1 e
#include <linux/dma-mapping.h> W7 Z" m# C% i$ a7 G0 Q6 n8 E
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h> z% {6 R& g3 k5 ?* `1 ]' y O
#include <asm/hardware/edma.h>$ b& M" b. e2 y" z
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( E+ M% P, t5 o; K" ?3 s D$ L2 t. F
#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# s% {! V) _& E
#define DMA_PRINTK( x... )2 l; [) `" v. F( l# ~8 \$ m
#define DMA_FN_IN9 I0 ~% b1 t, v' f) h) T* m/ x
#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 3
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#define TCINTEN_SHIFT 20: g/ W4 }9 g- }0 B) u# J' V7 J
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23+ u8 z: p. c& ~6 Z1 q$ a7 w& e
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;4 c( t+ w& M5 u- _( Q( B
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) m) h) m3 k' O6 C( [9 g2 v: O* f
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ G8 O% Z# C) J. M& F
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' }! r# U$ A) G% u
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;/ e6 m$ s/ k; r! y: g1 T$ n, C( L, D
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;4 f+ Y. y& W" {! \
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL; g$ z. q# t! X8 k: S# G. Z
char *dmabufdest2 = NULL;+ p2 P9 G( U/ h2 d; i# h
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;) t( P6 g5 l% ]8 [
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module_param(acnt, int, S_IRUGO);
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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