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.c5 ?- s) c( J/ p) }1 Z; d2 v) g# _
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* brief EDMA3 Test Application8 T6 Z5 Y% u- J3 v. N& \
*
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* This file contains EDMA3 Test code. K# L0 L! T3 C' v
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 Y, H$ N6 h% Y' s; Q' @# D
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.2 V" ]3 M- s8 t8 g0 Z
*
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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.* W( d% {) s h
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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( B5 m l+ k% z; L7 R/ ?
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details./ `7 x' S/ a [
*/
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#include <linux/module.h>; g" c* t4 B* ^# ^ o4 G
#include <linux/init.h>$ [3 S' G% p. C) T& S$ m3 x
#include <linux/errno.h>( A8 B! k4 q! {$ N+ G2 G
#include <linux/types.h>, x+ y8 R9 U+ D$ R7 |1 P* H* V- a
#include <linux/interrupt.h>4 [& B* {6 t7 {
#include <asm/io.h>& o- Q5 h2 I, n8 k! c& e S
#include <linux/moduleparam.h>( F7 j6 j2 X7 O% [+ B8 ]8 a: Y( {
#include <linux/sysctl.h>) m+ o N) F% I. k* E! ^0 W
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
#include <mach/hardware.h>
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#include <mach/irqs.h>- k# ?4 C$ P3 X) J
#include <asm/hardware/edma.h>/ U! {: d) o4 y$ _: r5 M5 ^
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG6 d5 e3 w. ]! s
#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
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN9 u0 f' B( Y: R
#define DMA_FN_OUT
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#endif6 s, A* _& Z. w: b2 P
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3* J8 Y8 k' k3 f( {' k6 D
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23& W. j T9 i+ a; I
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static volatile int irqraised1 = 0;$ U7 X7 Z, O, A1 y% z/ C
static volatile int irqraised2 = 0;% r8 e9 t, s8 w
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; v A5 C/ W f5 a$ q$ N
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( v% |. \8 o5 ^4 O, A* B) C
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;6 }# x" M) G! J- m0 _ q6 \ P
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;8 U* G- k! Y( i* R% {9 \: \* B
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;0 d8 N1 {! B$ j+ X/ p' c: c( k( v# c
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;1 F. f3 l: t2 V
char *dmabufdest2 = NULL;* F: R2 a& i5 k+ Z
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static int acnt = 512;
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static int bcnt = 8;; O% [9 ?5 o+ \" ~& x5 L, T
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);( a9 {9 Z% M8 R& b6 {9 T3 L( L. Y
module_param(bcnt, int, S_IRUGO);6 N4 e. R: |+ h. I; |+ ]2 h& ]
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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