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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/*
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* edma_test.c
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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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/ m6 V: }" z/ @6 L K
* modify it under the terms of the GNU General Public License as, \) L# b. m* w Q7 b& `5 Z
* published by the Free Software Foundation version 2.
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*" q# K" r+ l* p( v" U" ]
* This program is distributed "as is" WITHOUT ANY WARRANTY of any" _; }( l! m# u4 O% o7 }% E& [( T
* kind, whether express or implied; without even the implied warranty, f; P- ~8 G* i) b
* 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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#include <linux/module.h>! S( j0 Y2 u$ u: m! k
#include <linux/init.h>% C$ j. B, V: L+ g }
#include <linux/errno.h>+ x" `+ d6 E2 W; N& \4 M* {
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>4 u- X+ q! Q8 t) n
#include <linux/sysctl.h>3 m. i H, q/ ^( P5 p& D: G
#include <linux/mm.h>- c. o6 r, F5 c [# x6 f
#include <linux/dma-mapping.h>* G6 {. S# a! M+ a
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#include <mach/memory.h>9 g3 h$ Y. N; u1 b/ e
#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
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG, r8 t+ q* V$ c$ M: k2 h1 ^9 A
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)" X% q7 E6 x& y( x9 V
#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... )9 M0 Y \ \$ @/ L+ k) e, ]
#define DMA_FN_IN- K m k9 d$ ?* D! D+ K! }
#define DMA_FN_OUT6 `+ Y* g- w( w) g3 y/ a
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)$ d( l1 z) V+ |! ~* L; p
#define STATIC_SHIFT 3 ^3 Z& I% ~$ M6 B' B
#define TCINTEN_SHIFT 20+ W$ t9 h) Q3 L$ i5 \
#define ITCINTEN_SHIFT 21( f p, v, p, v% z4 y( L
#define TCCHEN_SHIFT 22) A1 p; I8 k- k) \! w8 H% E% K
#define ITCCHEN_SHIFT 23
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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);2 ?9 t8 M. u( Q0 d w, ~. j
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" [- D4 x9 x7 Y5 m2 n8 Y
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;- ?$ g+ b! t$ N8 \* m
dma_addr_t dmaphysdest1 = 0;9 I3 W1 N0 U* F# L+ o5 G- R+ r; E6 D
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;( R* m7 B8 P E+ w
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;8 U* b* a' t; f6 n1 f: ^# ?. ~
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static int acnt = 512;
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static int bcnt = 8; {0 {9 x* {! z3 C- M
static int ccnt = 8;0 A$ ^2 E* j4 u- ^4 R( V
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module_param(acnt, int, S_IRUGO);. _: _1 _% e( _0 c' |9 G6 ?
module_param(bcnt, int, S_IRUGO);5 [! b& n6 X5 K+ S; M- f3 I
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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