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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* edma_test.c" W, J& Z0 B* s" q$ ?. X" `% B% `1 D& N
*
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* brief EDMA3 Test Application3 s, O q4 ?* K9 h
*
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* This file contains EDMA3 Test code.! d L7 C+ X( @) H
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE" r: L$ ]0 k# k
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.$ V- t' |9 L' t$ z! |( O
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 e" b0 t4 F& b$ U+ F6 z3 {& P
*
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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
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* kind, whether express or implied; without even the implied warranty: d2 z; F6 f3 V
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the0 |6 l% z. h% M& _* V
* GNU General Public License for more details.% m2 L( C: x; I3 D8 |6 a/ F
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#include <linux/module.h>
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#include <linux/init.h>" V* I4 p% R9 f6 U+ S/ ?8 X2 s
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h> r& R0 [- d$ |/ `* s! s
#include <asm/io.h>
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#include <linux/moduleparam.h>; B( w$ j7 \, I3 p
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>) U" B( I" @+ ]2 o7 ?
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#include <mach/memory.h>
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#include <mach/hardware.h>" l: t |0 s( L8 ^: F
#include <mach/irqs.h>, F' d5 }. C, |7 \; w$ Q$ I5 k$ N" i
#include <asm/hardware/edma.h>0 H" m( E9 e# h( U% z) a
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG( }( E% k; s& p' k1 D
#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__)# k5 g$ B. c$ K. j
#else& d; h4 }$ ]. Z( O5 v6 W9 U+ Y
#define DMA_PRINTK( x... )* ?% }' P$ }2 A. `3 _
#define DMA_FN_IN; g! O. ~: Z3 B6 h
#define DMA_FN_OUT
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#endif3 f8 w' U# E# I
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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
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#define ITCINTEN_SHIFT 21/ {) u6 `2 _; F& B3 R
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 238 ~% d) c9 H# r; o6 E
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static volatile int irqraised1 = 0;7 ?8 q+ R' q+ v$ c1 }; M2 [
static volatile int irqraised2 = 0; p# r# }4 l l" w/ m9 z: M9 j
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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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;( [1 @8 x9 U& P
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;7 L0 p. i8 G5 {- c! D: \. w
dma_addr_t dmaphysdest2 = 0;* T1 _9 G4 n5 t" }. E
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char *dmabufsrc1 = NULL;' Q! ^- A/ \0 A3 q% `
char *dmabufsrc2 = NULL;0 l0 ~+ S4 q# @9 {
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;. E% F" I {6 k% F
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);1 |: k y6 Q8 a7 g! m1 V
module_param(bcnt, int, S_IRUGO);0 H/ X4 a! h1 M, K) b `+ \
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