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 application1 \0 V l" R* C" o8 B( B' N- Z- v
/*
* edma_test.c
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*
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* brief EDMA3 Test Application. z9 x1 f( i; k7 u! ^% u
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, T0 q# n! \" G; V
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.! A! X- g& K+ O
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 k' c) O1 ~9 P" [3 {! O$ v
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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.% x+ X$ I& R! r+ L
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any$ [0 b& i1 p8 c( x
* kind, whether express or implied; without even the implied warranty2 b) i3 `. j2 f; p6 q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ r; g! ~3 D. ]0 D9 M6 t; X; G
* 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>1 x5 y& T* Z+ V5 g, j
#include <linux/errno.h>
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#include <linux/types.h>4 E8 k* h! `2 J" Y) [1 U
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>( ^+ i( f' u. q( n
#include <linux/sysctl.h>- G+ W+ w6 C9 F# z7 W. W% T/ G
#include <linux/mm.h>$ K5 {1 t+ x( Q! @, n5 S
#include <linux/dma-mapping.h>
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#include <mach/memory.h>! @" i' u" e$ T
#include <mach/hardware.h>
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#include <mach/irqs.h>* m+ ?+ f3 @" G7 ]- g
#include <asm/hardware/edma.h>1 E; a+ R& i4 y7 ~5 g
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#undef EDMA3_DEBUG$ r7 x1 h* P# L& {7 U" X
/*#define EDMA3_DEBUG*/( R/ f4 W( n/ p7 Z8 J2 }: O- [
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#ifdef EDMA3_DEBUG
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#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__)- z! _; J1 O, z) i
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else5 a S' `$ n! q, w8 p
#define DMA_PRINTK( x... )
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#define DMA_FN_IN, g2 M! P1 ^& U+ ?- Q& m
#define DMA_FN_OUT+ b% o5 U& y2 {8 H- i4 m
#endif3 A' O! Z% a5 m1 a8 f9 ] i
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 35 z( M) m6 z5 s' p; N5 E6 G0 g
#define TCINTEN_SHIFT 20# ?5 O& S( }2 O* Y6 u5 T
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;0 T$ \' ?& z [. i
static volatile int irqraised2 = 0;0 Y. V9 y6 \" i
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. x! @0 ~+ Z2 m! c5 @+ I0 ?
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" q- }3 c( O' s3 V/ ?6 a
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ E2 p( }. Q# R" d2 m [
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dma_addr_t dmaphyssrc1 = 0;' W# H- s( a3 ?2 P" `
dma_addr_t dmaphyssrc2 = 0;6 F4 T- U3 r9 h) Y' g. o5 q
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;4 V' {. Y3 ^6 ~% t6 Y
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;( t: N7 R7 P5 E! K7 {! M! B
char *dmabufdest2 = NULL;) N! H2 g0 S$ ?9 B
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static int acnt = 512;
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static int bcnt = 8;. u0 D3 }7 A0 V/ _' L1 r
static int ccnt = 8;" h' p Y/ W6 X. D
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module_param(acnt, int, S_IRUGO);9 k$ s( q: r9 D4 j( I4 _1 i9 z3 j$ N
module_param(bcnt, int, S_IRUGO);# ^* M7 J$ j2 `3 j+ V0 ?5 W. _
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