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; U& l' J! `6 q A/ ]. }( a2 h
/*
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* edma_test.c1 x* k% X9 X+ Y" c" E
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* brief EDMA3 Test Application* G, z- k( F+ J W5 E+ S1 y
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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 BE2 Q3 N6 M S# _
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT3 w( e. F0 E3 L4 `0 r
* TO CHANGE. Y7 v- H" t" |& r: w- M) Z
*
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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. }; n D5 b4 X+ u* M( Q
* modify it under the terms of the GNU General Public License as0 {1 q, n6 F* b8 I( J3 r+ O
* 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 warranty9 `0 G9 d; }% U$ x4 L! t
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>$ X: d3 J( Z" V, }
#include <linux/init.h>
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#include <linux/errno.h> B+ M( \, M8 {' y3 z& w
#include <linux/types.h>3 B" I- p* ]+ s$ W+ a2 S/ t
#include <linux/interrupt.h>
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#include <asm/io.h>9 j6 E$ Y9 z) m0 T5 ?
#include <linux/moduleparam.h>% P! a1 m- N- G
#include <linux/sysctl.h>$ ^8 ?2 H9 p% M2 l/ i
#include <linux/mm.h>* W1 D8 r& ^! L) `; U1 Z
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>- S- N5 m# |9 Z# P, F5 w9 w# `
#include <mach/irqs.h>! t; h8 z7 f7 t9 m( @
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG5 C$ ~- s6 V5 k5 X; z6 o1 F
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG; l' Q" L$ p7 M J3 B
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), }) ~( Q& m) N5 F, P$ X0 J$ u! L
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)6 y/ I, p+ A9 m3 \
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)6 m/ @3 y! ]* ]6 G6 }
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT+ G' c( I; Y1 u
#endif( c! x; f5 W4 W% y% q
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# Q8 m5 w3 y: K! g% j
#define STATIC_SHIFT 3. _' Y6 J0 p3 L/ {) x- e) \
#define TCINTEN_SHIFT 20* a( B3 F, ]: h7 k7 ~
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22$ {5 H! }# [ {+ `/ s+ J7 P
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;7 _7 M% @9 b& u0 }) m) P/ D
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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);, ~' G( d+ I/ g8 p* x
) { \2 s- u5 {5 N
dma_addr_t dmaphyssrc1 = 0;6 ~6 X. K7 }7 K
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;7 W+ u9 ]; m3 a$ p( R6 S/ h2 F
dma_addr_t dmaphysdest2 = 0;( U3 [# y* C; o4 p+ @" h0 `
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;% W5 {9 \# l" G+ w& ]. Y
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
module_param(bcnt, int, S_IRUGO);. ] Y) ]# a6 p2 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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