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* k l$ Y/ j) w! A; Z
/*
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* edma_test.c
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* brief EDMA3 Test Application4 k- b- b# p w! ~ n. f
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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 BE1 d3 c& _8 ?" ]7 M# G9 r% S' A7 d8 d
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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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/or7 K5 L- s# n8 Z/ V) t
* modify it under the terms of the GNU General Public License as/ P/ B- H4 U3 [5 J- b% R- K
* published by the Free Software Foundation version 2.7 |& U# S% _/ ]$ @. |8 P
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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# }' @( c3 I! s8 |
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.7 ~3 ? R; C ~
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>/ E4 b$ Q* r& _' r$ \1 L
#include <linux/types.h>, b. d* _) T' E0 @; l0 e8 G8 z
#include <linux/interrupt.h>9 L' ^9 y! m- u) X2 z
#include <asm/io.h>; E" J% q$ {; s
#include <linux/moduleparam.h>2 `. F7 O% h$ f
#include <linux/sysctl.h>
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#include <linux/mm.h>2 d. U% \3 L& X& m$ q
#include <linux/dma-mapping.h>+ W2 l9 G( C1 }( N" T
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#include <mach/memory.h>1 D6 }) J- a9 }1 w
#include <mach/hardware.h>
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#include <mach/irqs.h>% K1 [: X7 Z* ^
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/, d# n1 B3 b6 G. f/ b3 K- J9 \, N3 A0 [
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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__)2 i$ d9 W h' C4 R! }6 q3 B
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)7 V: x% |# I# p* m$ _/ X7 b; b7 T- ^
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 ?9 \& t1 A0 Y6 v" \% R- q: h
#define DMA_FN_OUT, b" r) b) Z2 u* x V" X
#endif0 }" V8 [! R8 Y$ ~+ y# ^
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 H: o" _ K! @( N' ^( a7 b
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20; T. m* f2 n6 V$ m& {8 Q" r: {
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22- X3 A% ?: S/ `& w2 r
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;$ T* }0 Y2 V9 W' M: z3 e9 M5 _
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);- I* ~8 p- E% c u1 q
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" E X( Y% F) A& y0 B( y
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;% [5 r% H$ L: A
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;$ d' d2 X" n* Z' K
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;+ v8 w3 ?( _) X& V
char *dmabufdest2 = NULL;& a# U2 L) Z9 Y+ d% e3 F
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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);
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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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