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+ x* M8 I; Z( r8 \
/*
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* edma_test.c- X1 `9 [6 p! f+ v7 v
*
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* brief EDMA3 Test Application# M% N7 h8 d5 o) X3 @
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* This file contains EDMA3 Test code.+ b& x: f, `! a1 g3 l, W) y- k
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE" C* A6 K+ U; B% @
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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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$ a* X5 w$ ]5 L
* modify it under the terms of the GNU General Public License as
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* 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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the. o) K! [3 M( l3 _. p
* GNU General Public License for more details.5 ~: s0 I: k+ T6 ?3 k% ~
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#include <linux/module.h>1 N7 ]; O P" b7 @. ^ W, Z* Z, y
#include <linux/init.h># A4 e# f0 ? }# ]$ l$ A8 d; \" P8 ^( T0 b
#include <linux/errno.h>9 T" h# v. O2 m- v
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h># b0 h" r* V! o, R
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>' [$ Y5 u1 b+ @' L. s3 F- @, o; x/ J
#include <linux/mm.h>
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#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>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG& _- _# Q' D' ^4 E
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG9 V& P( I( {. T) h) U- G
#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )8 I- o0 W8 t9 T3 h6 y
#define DMA_FN_IN
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#define DMA_FN_OUT, n- U: v9 i T5 ~, H8 K( t k4 ~- C
#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' {- X5 `; Z6 X* d: ]7 h8 R% i
#define ITCINTEN_SHIFT 213 z$ |6 f+ _/ w
#define TCCHEN_SHIFT 22* a. H# t, {: o7 [$ o, `
#define ITCCHEN_SHIFT 23% v5 I( @: t9 {3 T4 s
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static volatile int irqraised1 = 0;
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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);5 A2 q+ r, W, t8 x$ I% i. P0 F! A
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ R) U6 M+ l. V; _8 b
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" @4 A- P$ F' |" P! J
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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;
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dma_addr_t dmaphysdest2 = 0;3 N4 d0 J* @7 o9 T1 s f
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;- ^6 R. Y. Q- I W" K$ s
char *dmabufdest1 = NULL;$ J9 k4 T' Q7 J- Z
char *dmabufdest2 = NULL;+ g% @" S! e/ Y# o
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static int acnt = 512;! u+ E4 ^. h: `& m% t. W. A$ I
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);4 q2 ~- |9 r( z
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