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( v) j: ~5 U9 n, H. v7 e( |
/* Y0 N+ g6 c9 k i
* edma_test.c* k' q; j+ F7 ^3 D
*
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* brief EDMA3 Test Application2 n; h4 G2 b4 ]9 _- }
*
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* This file contains EDMA3 Test code." U! Z4 W7 \4 ^1 R
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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* T. L8 e7 }2 X& ~7 _# j0 ~
* TO CHANGE.* q" x! I) E0 q0 |# \+ {/ s2 C- B9 p
* s: I9 L4 `: h2 X8 M0 {
* 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& ]0 A7 y) v; A- H" m3 O
* modify it under the terms of the GNU General Public License as G; J; B/ S; Q6 E* ]6 T
* published by the Free Software Foundation version 2.; P5 z' Q2 d7 s2 T7 k* w
*
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details." u* L/ R. G2 c5 m5 i$ F( X
*/
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#include <linux/module.h>
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#include <linux/init.h>3 ~7 z8 m8 U2 }9 Z u$ ~9 f, U
#include <linux/errno.h>: f% m. z1 b- |
#include <linux/types.h>2 s `& e2 ?' Q7 {6 v
#include <linux/interrupt.h>" ~8 W" N! F" y3 r4 m" c
#include <asm/io.h>& f# M1 Y" I$ X1 k7 ]4 X$ A
#include <linux/moduleparam.h>. n h: K( \5 ]1 E& K* K, g
#include <linux/sysctl.h>- w$ d3 D1 i( i5 q
#include <linux/mm.h>& W9 \) ~) J5 Z$ F& }! q
#include <linux/dma-mapping.h>
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#include <mach/memory.h>! n( s2 o- b! @5 A: l* z
#include <mach/hardware.h>- ?# E# e* b% N+ ?; G
#include <mach/irqs.h> P8 x% ^2 t7 D
#include <asm/hardware/edma.h>4 ]6 l' X, L+ [) C! G0 \
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#undef EDMA3_DEBUG/ a/ C7 u4 u1 h* W% ]0 l
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG a1 A+ M2 q# K2 C3 m
#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__); V& p( S2 \0 U' b
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN; h1 H. G. O+ J8 [7 c( e% P3 D0 l
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21! L* Y/ ~9 a0 Y3 F" @( u; q
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0; d5 s K- n( n* x+ F$ Q
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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);$ A' U8 H4 f( h1 z1 a+ f
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;$ \+ ~. k4 h! z3 L$ F' a9 g
dma_addr_t dmaphyssrc2 = 0;' h/ `- B4 N" E6 ^7 A
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;4 X' Z# W- V7 J3 O. a
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;4 a& W3 W2 x* X5 w* n
char *dmabufdest1 = NULL;% y! L7 ?5 d2 P4 Y% T
char *dmabufdest2 = NULL;- M3 Z& H" [2 G6 i/ s* n+ s8 ]
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static int acnt = 512;1 N, Q" N( y. l
static int bcnt = 8;
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static int ccnt = 8;6 `% d2 w: i3 h. T
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module_param(acnt, int, S_IRUGO);0 X5 T# u1 w* ?% } Q4 X6 d
module_param(bcnt, int, S_IRUGO);$ t8 E, ^1 I% G4 j& p& W& ]
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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