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 Application7 u9 X+ g$ K5 C' d5 E
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' ]; M w! b4 T- J6 j) E
* TO CHANGE.; H1 ]0 K. @, O. q. E
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! P9 J+ l) H3 Q9 W( C5 s, i7 w# F
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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.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any) q' P% J' @5 u% }
* 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.0 ]' `" _% ^8 b9 ~, s' m$ V
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#include <linux/module.h>( N. f+ f. j5 q3 W
#include <linux/init.h>! F; W: P# v. n7 o$ x
#include <linux/errno.h>
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#include <linux/types.h>: q9 {( d( B2 U5 g: T
#include <linux/interrupt.h>( V/ d" d7 Y& v8 q- K
#include <asm/io.h>
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#include <linux/moduleparam.h>: \- ^3 s r( G4 _5 i
#include <linux/sysctl.h>+ c+ f* j4 @3 R2 R+ Y9 U
#include <linux/mm.h>" x& }, Q8 P$ }- p; L6 b, Y
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG1 A" @. }" g# c+ a' F' t7 [+ i
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG5 d/ V' L1 l; q0 L: Y6 B
#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__)5 w# a6 Y+ i6 m4 {7 k8 K: l' F
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)5 b: { h7 w! ?" {" A
#else! _5 K' [3 F+ m1 d) h2 F3 A0 n/ ~
#define DMA_PRINTK( x... )0 Y9 C3 X8 @! R- q
#define DMA_FN_IN
#define DMA_FN_OUT
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#endif& \" I/ p$ `* G
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)$ z0 ?* H( R& t4 t x9 i/ ]3 d h
#define STATIC_SHIFT 3, F4 @) h: g; ]" }" |! }) Y* N5 C: p
#define TCINTEN_SHIFT 20/ t( m; o) g, v* C/ p/ M" s: }, I" |
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23- }- e' j! h$ k# n ~; k
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;; `# j' \' T. ~* t) k
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: F; {) M h3 R+ q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: b# D! d3 S* y" ~: ?1 c, G1 z& g2 m" O: H' l
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); g i. g& f- [
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;1 r: {" H4 X1 k2 C8 r# k
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;+ Y$ f6 ]8 f3 q2 Q& g# d* {2 e
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;- T% W9 [# m' _% U$ j
char *dmabufdest2 = NULL;
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static int acnt = 512;; I/ I/ D. w' j7 g" G
static int bcnt = 8;/ U# K9 d5 n5 p4 r7 O
static int ccnt = 8;/ d7 C7 V( I& a/ s" X
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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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