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 application0 o3 i* R, N) @* } K
/*; \; P/ D y+ L4 u' o
* edma_test.c: G3 b( ^; M: W
*
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* brief EDMA3 Test Application5 W8 X- {8 ?0 X8 D, F& ]% R; r0 n
*
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* This file contains EDMA3 Test code./ {& y6 _9 i5 e& p7 `5 W6 M8 S# |
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE! k9 O9 b4 M: ^
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.9 r" F! u# r7 A
*
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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 as! X3 [# i; p6 E: j
* published by the Free Software Foundation version 2.
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*7 I/ m& N/ _3 m5 l# o% D; j; R
* This program is distributed "as is" WITHOUT ANY WARRANTY of any. W$ G4 s+ g- L5 ]& t
* kind, whether express or implied; without even the implied warranty/ r' G: i8 F# B% b5 o( H! x
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( B0 m* b8 n) L. T- j
* GNU General Public License for more details.
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# i$ b0 |* q" |% r* |9 X
#include <linux/module.h>
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#include <linux/init.h>, v" o) r$ @( V1 X f+ h
#include <linux/errno.h>) a" D. f4 p& P) g. _
#include <linux/types.h>' l1 T2 H8 ^0 {- I9 K. x7 |
#include <linux/interrupt.h># x9 ]( ~+ t! B- Q( _6 s, I
#include <asm/io.h>; Y7 _( n2 n; {' v, X+ U
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>. f; w2 e" U" |& u! [
#include <linux/mm.h>3 z R0 b. W8 |) r$ Y; v0 l
#include <linux/dma-mapping.h>$ V$ V Q) f4 m `% V% ?
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#include <mach/memory.h>
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#include <mach/hardware.h>& Z8 E* \, p" W4 Q) C
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG: Z* ?$ F9 @# J8 v
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG: d! u' o; P) f
#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__): R# v9 |5 C# F5 K, u5 O
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)5 S$ a: C! O+ z9 q5 l% J
#else
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#define DMA_PRINTK( x... )6 Y. j2 d9 }. d* t7 @* P
#define DMA_FN_IN
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#define DMA_FN_OUT- M1 f3 K- l S6 z8 V
#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
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23( |% @/ a6 q$ G2 N. \
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static volatile int irqraised1 = 0;7 t( e R6 T' n6 v( {
static volatile int irqraised2 = 0;( [5 ?- ~# V3 P( }' M8 T) o1 R
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* e8 c( v: G# U5 @4 R0 [: v
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);- T. `' G# e7 Z' c+ W" L* ], J3 u
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;2 u0 \" g0 [! G+ x1 ]3 _; m. R( O
dma_addr_t dmaphysdest2 = 0;- F. U0 A: x, b3 s* O% {
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char *dmabufsrc1 = NULL;5 w! p z) e# U. g
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;3 H( I4 V. l# T0 o t' C E, V9 H
static int ccnt = 8;: d2 F/ O+ M ^- Z2 }
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module_param(acnt, int, S_IRUGO);- R! r9 y( K% Z$ O2 \0 C
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