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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* edma_test.c
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*
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* brief EDMA3 Test Application: o" s- w+ H) y
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' X2 r W {( n3 S) U- T
* TO CHANGE.: v8 r& C# i+ y
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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
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* modify it under the terms of the GNU General Public License as9 ]6 S Z) l! V& V6 c4 _$ e
* 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" i; U8 N" r! P$ P D
* kind, whether express or implied; without even the implied warranty; `4 W; j. O2 e9 m1 V9 c* u
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the4 ^, j5 c$ f4 s O. m+ }; \0 l
* GNU General Public License for more details.4 z2 T( }1 j- _ J: v4 |
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#include <linux/module.h>2 F4 u6 W' E" s. r4 L3 Z
#include <linux/init.h>* |! ^' x* y2 y# Z6 f. B( M6 M
#include <linux/errno.h>4 x7 u0 C" k7 g! ^5 {
#include <linux/types.h>
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#include <linux/interrupt.h>- @+ \8 {2 j& ?1 T1 | O V
#include <asm/io.h>0 T; ?, c' p9 U8 N
#include <linux/moduleparam.h>4 T) s! J1 Q1 ~; B
#include <linux/sysctl.h># P; w; `% c: _5 m
#include <linux/mm.h>
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#include <linux/dma-mapping.h>9 |/ ?8 i) f% ~: [4 M1 v
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#include <mach/memory.h>
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#include <mach/hardware.h> w, i2 }& \ j$ |8 Q4 h y0 m3 @
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG1 R/ y3 j5 @4 S' A
/*#define EDMA3_DEBUG*/
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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__)
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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... )
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#define DMA_FN_IN0 |, l) [0 \! b; f( R4 y5 y( v4 I R
#define DMA_FN_OUT
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#endif/ Z) k/ H! v- l8 n9 l7 S
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)' S& J) W* W& U% r3 x) [" U- A
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 205 G, {* l. a* t/ j3 B# s/ p( p
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22* K* E$ e* u) a( R) o
#define ITCCHEN_SHIFT 232 T, H% C2 e0 }7 I6 H1 ` _+ V* M
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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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 P6 b7 G2 f8 {& ^0 \1 Z1 w' \
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;% m5 l* D* e9 R3 e+ v6 ~
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;0 E# d) C+ m6 @. h( n! i
dma_addr_t dmaphysdest2 = 0;* C7 S; v! g% O- Z9 A) h3 N2 \) C
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char *dmabufsrc1 = NULL;9 E6 O) l% g! }0 O
char *dmabufsrc2 = NULL;/ l! s0 ?+ w! ~3 d
char *dmabufdest1 = NULL;
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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;. ^+ i) ^# p7 r& x G# C- H$ V! n5 e
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module_param(acnt, int, S_IRUGO);/ ?4 S9 i' X; l/ ]$ g
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