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.c8 |$ K V, L' o- T6 S
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.; ^4 O3 _2 B3 ]' V$ i
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' F3 f* s0 }& ]" G4 J I- \
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT V% w$ j$ w3 T
* TO CHANGE.* W3 c7 V; s* o
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/9 z! n* Z+ f1 ^2 B1 ]+ \
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* This program is free software; you can redistribute it and/or6 v# i- j L6 y3 b3 Q4 r
* modify it under the terms of the GNU General Public License as, A+ I& ?: H6 |* |( e8 C
* published by the Free Software Foundation version 2.
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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.
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#include <linux/module.h>' i0 F, o3 `; Z3 K& |* t" y
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>1 X3 m% C2 b8 n! }9 M$ x! L% R
#include <linux/interrupt.h>9 ^0 c0 v. N2 t" d; E: Q; q# `
#include <asm/io.h># A5 g- X/ J0 g6 ]/ Z9 B
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>3 m/ r- p) u1 g& ~9 H: h* f2 |- K s
#include <linux/mm.h>% z1 d- t) E: D5 y9 C! a
#include <linux/dma-mapping.h>
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#include <mach/memory.h>( B0 i5 q3 N0 j0 l! R/ K+ m
#include <mach/hardware.h>! \& v' L, m1 P2 B
#include <mach/irqs.h>0 i! K. h, P9 A
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG+ v& B% e' g" J4 `, |7 r! }
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ T( ~ W( X& i3 u. S3 r
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# h& I5 z) h+ a$ ?+ J
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ |! o$ _( Z! c! D2 k
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN; @& h( x5 q: S# c' [
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 N" ^1 j" W n( Y1 I/ T# K
#define STATIC_SHIFT 3( G/ {8 S( N) p* b8 s1 R
#define TCINTEN_SHIFT 20* A' a# W2 e- \% H# { f
#define ITCINTEN_SHIFT 211 `; X, m9 w% P8 q
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;$ S6 K0 ~- l2 W$ u
static volatile int irqraised2 = 0;: D5 `; A+ h2 f6 M% o
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& H( H( O% @1 d
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" w) u" _# w& u! x; m/ \# y) t
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 F0 z8 w9 @4 e) P1 S( n4 ^
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dma_addr_t dmaphyssrc1 = 0;9 t8 d& o6 a8 o8 m0 f |
dma_addr_t dmaphyssrc2 = 0;: ?6 r) I8 g3 I$ ?+ X: ~
dma_addr_t dmaphysdest1 = 0;% `) W! A$ ^# p
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;; |: k1 ]& ^& r+ I0 M
char *dmabufdest1 = NULL;+ u# U. k- @ e- I2 z5 e4 H
char *dmabufdest2 = NULL;5 s3 l9 ?) _7 t
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static int acnt = 512;5 h; W1 q% a5 i+ A( g
static int bcnt = 8;! I8 A/ Q0 E1 A2 j# O$ \! i% S
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);" ]9 C) l) N4 M {/ M9 J; i
module_param(bcnt, int, S_IRUGO);- O! u6 _+ B3 k. f3 S
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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