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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/*! J$ V% f0 p9 p- @5 F
* edma_test.c
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*
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* brief EDMA3 Test Application
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** i# w% O* A" w
* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% T1 z& K M/ v
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 ]) w$ }+ h6 F. E* V) ~ g
* TO CHANGE.. B: _* N* B' c; Y/ j
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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 as1 a/ b& R1 N6 {4 _# K
* published by the Free Software Foundation version 2." Q, V6 @. d7 B
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 _# X8 n- ]0 v; R
* kind, whether express or implied; without even the implied warranty: w5 W& }. J E* ?& e5 H
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the9 J: q' h4 o& N
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h>" [/ J+ d! K! K* T0 f# R
#include <linux/errno.h>/ n% U) ^; H; p/ s0 F0 I8 m2 D+ }% c
#include <linux/types.h>% h3 I+ q4 u" l6 u v& U0 u
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>6 |6 g0 B& _( q
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h> C* I- c* k7 n" y5 P! F2 j
#include <asm/hardware/edma.h> j1 v! N; Z9 v' b5 ^( F
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#undef EDMA3_DEBUG! b. z4 o. ?& y7 V7 g' H
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% ^0 S5 c$ W. A( d8 m& }8 v
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) S! U; w0 E$ }- N2 e
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else5 N# e9 {7 X( L, Y! L
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)) s2 T* ~2 }, |2 L1 Q7 ]
#define STATIC_SHIFT 3! \4 ]/ d/ a; H8 K+ Z8 v- ^6 U* G
#define TCINTEN_SHIFT 20* M% H$ C) J: ]* ^. v
#define ITCINTEN_SHIFT 21" W% b- }/ q4 C6 y
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;/ R2 @7 t8 O+ w
static volatile int irqraised2 = 0;" {4 E U& G( g- v& T; d/ P2 L
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& p3 x# W" Y! m2 s; 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);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0; A: Z' _0 F: m+ T2 `6 c
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0; `+ c. |3 b- ~# J1 P' F9 X" P' l5 f W
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;2 A" z% x0 j: ^9 f& E
char *dmabufdest1 = NULL;/ @4 R5 F m! @: s- n: Z
char *dmabufdest2 = NULL;
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static int acnt = 512;/ ^9 o$ Q' m4 g# ?) s
static int bcnt = 8;* k7 N. c/ N7 t( D j/ p
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);8 q+ X3 Q: b7 S7 `, [9 Z7 ?) y% n( u
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