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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*
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* brief EDMA3 Test Application! Z5 S/ S: S8 A K2 L' F1 N# {2 S
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* This file contains EDMA3 Test code.) N# U' s: a2 C' M
*
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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 SUBJECT5 t( a/ g' L0 b# S- W! L
* TO CHANGE.$ y! Q |; [% _0 ?
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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/or7 p+ w2 v2 i2 X0 G% s7 I
* modify it under the terms of the GNU General Public License as) z7 k( Z* C+ J% K7 v) q0 _
* 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
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* kind, whether express or implied; without even the implied warranty% X$ i3 o1 T! J6 [9 m) n
* 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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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>" c3 W& n. P1 M4 y3 F
#include <linux/types.h>
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#include <linux/interrupt.h>, }$ ~. v3 @% b- X. V! f! k+ V; V
#include <asm/io.h>
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#include <linux/moduleparam.h>3 u& ]/ `! t# `5 S7 [: K
#include <linux/sysctl.h>. B3 G0 M$ y- D) w G
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h> f- Z( ?, A! H$ k, q/ ?, ^, L4 O$ x
#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- n3 S3 t6 K) S- _/ G
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG8 h' u A C4 k( _: w
#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__)# ^8 u* |6 h0 Q. y0 b. f u- R
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)4 y- j7 q5 K+ e$ a/ M
#else
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#define DMA_PRINTK( x... )$ O' o: H( H# v K& c
#define DMA_FN_IN9 g2 L% I% m2 v5 K( T# c
#define DMA_FN_OUT( s# L) ]! E( h B; b* E
#endif7 {' ~! l0 @5 `) _- }6 Q' S
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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 d1 F0 N+ X% C" y
#define ITCINTEN_SHIFT 219 @. { a% i5 [ O% i/ y+ e
#define TCCHEN_SHIFT 22: ^' d0 d( f" f# X
#define ITCCHEN_SHIFT 232 l1 J7 K8 C5 h% T+ _
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static volatile int irqraised1 = 0;# I# ~* A9 j- w' P2 k
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);# {7 V+ I- q/ ~- e
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ ~! k+ v8 M0 q2 B% G% J t% `
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;
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dma_addr_t dmaphysdest1 = 0;) Y6 O/ d8 ^/ y( b( j% P! R
dma_addr_t dmaphysdest2 = 0;. p# |) N G5 o" X+ E# `8 ?; m
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char *dmabufsrc1 = NULL;. f7 U6 X5 f$ N$ O4 m2 o8 W
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;3 f. M+ G. p% B* I9 L1 j
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;6 x: V* f7 V# `' x, k
static int ccnt = 8; L" r+ s4 w! M6 X# ?+ h
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module_param(acnt, int, S_IRUGO);5 r: v2 e3 `/ Y, {7 t
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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