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 application6 g! o, G4 H' G. V
/*
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* edma_test.c, X; K* i: B5 @4 u/ L
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE `. e8 Z% ?* }9 X
* 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/0 b; N6 K( M/ O( T1 `; H/ k
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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
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* published by the Free Software Foundation version 2.
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*2 P6 | `) O) t" l" b' m
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty1 s" Z& b k+ P' c! d" y
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* j9 H$ X+ _$ J6 e% s& f1 ~
* GNU General Public License for more details." d9 a+ K+ o% S1 }$ c4 ~
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#include <linux/module.h>
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#include <linux/init.h>3 h& Q9 u% h7 D! w( u2 i* J$ B- {
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h> `+ r, n2 `0 t) j* b" C' T% c: k
#include <asm/io.h>* r0 n) \$ y" N+ ~
#include <linux/moduleparam.h># c: R$ M9 \) p
#include <linux/sysctl.h>" O' u& H6 j' c( u- c- s
#include <linux/mm.h>% I' S/ I8 |+ _. i* E, A# b& k
#include <linux/dma-mapping.h>
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#include <mach/memory.h>0 Q& I+ l( b* d9 J% {( a& s
#include <mach/hardware.h>7 R& Z) N: |# [" b4 W3 J8 M
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>. K0 `* X8 D. A
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#undef EDMA3_DEBUG5 t: ?$ v/ w6 D: K @; B8 Z
/*#define EDMA3_DEBUG*/5 V; E3 G# J5 { l8 p7 c
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#ifdef EDMA3_DEBUG, e/ U, J1 A, q' D
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)2 f7 q8 U# T! L9 s6 }
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__), M0 Q, j1 e" W% N. h. B$ u! a
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)5 |- T" @2 |5 E: s: K; ^7 a! Q
#else
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#define DMA_PRINTK( x... )- s' }0 e5 u) ~' [3 S8 u# R* ]0 H% K
#define DMA_FN_IN
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#define DMA_FN_OUT' c4 \9 d2 Q/ J3 B# T
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 32 L8 b3 G3 V' H$ w$ d: m, |
#define TCINTEN_SHIFT 20$ Y8 J7 N9 M8 f% l# f
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 226 m7 ^' _" ~' x+ P% m6 g) G+ ` C
#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 D" e* r m1 ?' X
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);. x3 e8 [- [- M
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dma_addr_t dmaphyssrc1 = 0;$ Z5 W' I* S2 Y. T6 U9 r$ l- K' S! }# @
dma_addr_t dmaphyssrc2 = 0;! r* s' j. N& R+ @
dma_addr_t dmaphysdest1 = 0;+ q; d h" _. l9 @6 M
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;" M! r" T) n$ p7 z
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;# W. Q4 }3 { N9 x0 W x
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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