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$ O5 V: w3 \' |/ S
/*
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* edma_test.c) P; F- Z( o3 O& X( e6 t
*
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* brief EDMA3 Test Application2 g, Y' A( m" {5 i7 K
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* This file contains EDMA3 Test code.. c) n, V( ?3 H3 _) Z2 N
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! _" M: M$ C+ \, ~3 y
* TO CHANGE.0 M5 v* J$ ]) [; N+ y3 @7 X
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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" h& a1 g O9 k) G/ B
* modify it under the terms of the GNU General Public License as& g5 p/ F! s2 ^1 K/ P
* published by the Free Software Foundation version 2.- k0 G# a Z8 [2 p# n
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any! E' x0 `1 v9 [+ ?* N
* kind, whether express or implied; without even the implied warranty' P E5 m8 |/ t* b4 ?
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the4 I' n( E$ }( P( o
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>5 _! { S: ^* ^1 m. {
#include <linux/errno.h>
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#include <linux/types.h>1 g1 @+ Z# c% s E8 K
#include <linux/interrupt.h>: n D+ g Y" s+ q# A
#include <asm/io.h>* a- x! H+ y8 k* w
#include <linux/moduleparam.h>8 `9 {9 x4 l' T5 [$ B$ v- ~
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>, z' l5 ^6 O0 B+ C/ i
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#include <mach/memory.h> N: E! P$ n5 S% @+ z: N7 j
#include <mach/hardware.h>
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#include <mach/irqs.h>, O, r! ]* J" T& r
#include <asm/hardware/edma.h>) s. J$ q4 h, H+ w
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/- f4 y' z# k2 ]* y) l- {9 O
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#ifdef EDMA3_DEBUG- Q, |( Q4 Z8 ~1 s& G
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ v8 B* \9 B* V
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)( v; ?( r! b) B
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else$ b; d% d- }6 j' M7 I& u
#define DMA_PRINTK( x... )- Z3 Y4 X( B) X$ U4 c
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif8 @8 b9 u( i$ z3 M5 ^. c
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 34 h) r! X2 x6 t4 A e$ M
#define TCINTEN_SHIFT 207 R" V' e$ G5 z
#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;& c. V$ m8 V l6 S0 v- V, y$ F# T4 L$ C
static volatile int irqraised2 = 0;, s) o6 }5 n" t
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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;4 z* a, B0 B4 N8 l+ G7 `7 F& N
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;7 S% }( x' j6 }! I
dma_addr_t dmaphysdest2 = 0;0 u) h# n- k4 ~8 ~
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;% l; c1 m/ s m4 r: v
char *dmabufdest1 = NULL;) @9 w# L5 ^9 Z% h# e. f5 a* S
char *dmabufdest2 = NULL;3 ~ r4 [4 t8 s
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static int acnt = 512;0 P* T8 a( k+ a7 |5 N
static int bcnt = 8;/ a/ t9 q3 M4 y! m" a
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);4 C2 g+ r3 ^5 M) d0 K* q
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