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& }% |, N$ d' L% D( R& N) H
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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$ E3 ]" L9 F( q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, ~, q: Y4 R$ Q* }4 w3 [9 w ~2 @
* TO CHANGE./ `3 w, ]# q) `; ^' }
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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 as3 J" ?9 Y/ p/ g' J+ \! g8 G
* published by the Free Software Foundation version 2.2 Y4 N) M1 {& ?1 U" L9 Y; Q; ^, x
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. Q5 [4 g$ x* V: i
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>4 V2 j, ]% b1 r3 s
#include <linux/types.h>0 \6 N2 w1 t/ x8 o0 n
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h> [) M( U& |$ z' V, r4 G/ T
#include <linux/sysctl.h>4 {" v0 A0 d4 e' n6 J7 H! E
#include <linux/mm.h>2 \. }, U% N* ^( |- L
#include <linux/dma-mapping.h>
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#include <mach/memory.h>( \+ q- G- r7 h0 `7 D1 r
#include <mach/hardware.h>' [& m0 i. e2 x3 i/ T5 q" l8 N
#include <mach/irqs.h>5 g5 ?: n6 [/ `
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG* B# ]. I7 R, K! e( X/ }5 N7 G3 S+ n
/*#define EDMA3_DEBUG*/# _( t) M) N! e# ?8 Y( s
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)2 D, q9 ~3 o0 u0 R
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# f4 M! N6 p0 l
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... ) {/ V5 r8 O: _( T6 `1 c9 w
#define DMA_FN_IN
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#define DMA_FN_OUT/ p( o l- j& [3 u7 Z$ K" P
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3: }, P) H+ Y! @' ]
#define TCINTEN_SHIFT 200 @2 c" K9 ]6 s! o$ X; o/ q
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22' o* }3 V) E5 K# h
#define ITCCHEN_SHIFT 23* U Y- f4 |+ J7 o% I& g
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static volatile int irqraised1 = 0;- b$ W# D Z. W* b
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);9 ~- n% R" H$ v. t$ _, d$ a. ?
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 Q- r& g; D4 N( U
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 K1 f$ `8 R. k i# V
dma_addr_t dmaphyssrc2 = 0;0 l, u- n9 i y( q0 S
dma_addr_t dmaphysdest1 = 0;1 @3 L- r$ D; M; c9 V& }: x
dma_addr_t dmaphysdest2 = 0;- y( Z6 ~ _# { y! u8 z
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char *dmabufsrc1 = NULL;# t/ I2 ]0 Z U) R P* ]
char *dmabufsrc2 = NULL;% ^; \& @ ^$ h
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;+ @5 F6 ~& N2 z3 m v: @2 R( q
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static int acnt = 512;
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static int bcnt = 8;% U8 R2 n2 j' ]6 ? s( r
static int ccnt = 8;. J* w! O/ n8 {+ O/ @. E- ]& A k
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);# K% d* b* {8 ?; y
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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