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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/*) g: y0 [7 d$ B- X
* edma_test.c0 W$ j. ]# i) Z$ n
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- ^; E( q: K9 t# ^5 a" T$ ^
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT8 v, d6 G# W- c5 b- N, F
* TO CHANGE.9 f) c* Y8 E' {- ^( T: U8 ~. F( Q2 n
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ m Q1 a( A# y* Y' d) q
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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- ~" H2 o) l( w* {6 c
* 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! t3 b) c" I5 g: \5 G3 a2 g
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 j, u1 N9 A. ~3 [) z4 ]
* GNU General Public License for more details.- A" T7 y- F. f' Q; K' j; X) ?
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#include <linux/module.h>! _2 n0 {# ]* h1 o6 ^3 F6 U$ X* C
#include <linux/init.h>
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#include <linux/errno.h>2 [9 ]9 o3 b0 v3 D4 c9 K
#include <linux/types.h>( g7 u1 L) @2 l
#include <linux/interrupt.h>) ?, p2 a2 d- ~6 g$ |8 ^$ h
#include <asm/io.h>3 r* U6 j2 ^0 N$ X' j3 I
#include <linux/moduleparam.h>2 C8 p( X7 u8 n' i4 C, U
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>( |8 o8 {- W8 i
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 c4 R t$ `8 X% y+ E7 H" c. N
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/$ ]6 R+ M. |- s1 G: Q1 V
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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__)4 k( R7 U9 }; X6 W
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else8 {8 m/ ^! ^9 Q$ a
#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)
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#define STATIC_SHIFT 31 P- g, {$ {! g' o+ }* B
#define TCINTEN_SHIFT 20. |) C5 s$ ?0 t
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 227 T+ @, l: N7 V
#define ITCCHEN_SHIFT 23+ C* ]- C" }& T; H; `
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static volatile int irqraised1 = 0;0 W3 C3 S! [+ {2 Z
static volatile int irqraised2 = 0;
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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;2 B( V' }1 z$ v8 l: }; d
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;6 `6 |0 L9 M# ^! H/ Y
dma_addr_t dmaphysdest2 = 0;) }9 e3 ^. B; e: b$ s
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char *dmabufsrc1 = NULL;4 \2 ~1 }/ [/ E3 R/ n
char *dmabufsrc2 = NULL;0 q! G. X; i4 [& I
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;7 l5 x" a4 F9 ~( _: G
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static int acnt = 512;/ }5 r( x7 S- s' C+ }9 V
static int bcnt = 8;/ v% _* ?: h. C8 i
static int ccnt = 8;+ d# o9 f, ?! b4 v+ P4 @
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module_param(acnt, int, S_IRUGO);
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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