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& a) A" V0 x& s% t6 U1 t6 q% n3 C
/*& s5 Y7 C3 f4 v' _% f
* edma_test.c4 S0 s; o$ x+ |
*- E) o6 H/ O4 i! Q1 p
* brief EDMA3 Test Application5 E! k* k; p% q% S* f( b
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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
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* TO CHANGE.) [) G, F& [2 C8 B' `
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) T6 Z3 `" u; |& X& j" V- O& x
*
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* This program is free software; you can redistribute it and/or3 [% q# F! f% u8 ~7 H. h
* modify it under the terms of the GNU General Public License as R7 m3 H6 ?# a6 ^: a
* 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 any5 B6 |3 T& {9 i/ q
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 ]; @! C3 j# {/ I% I
* GNU General Public License for more details.
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*/" u9 F6 Q& J& t: E3 i3 O
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#include <linux/module.h>7 O' K) p B' c- I) R1 u
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>3 V( r' } n: ?6 W, ?
#include <linux/moduleparam.h>7 V5 w2 n! c- k3 ^9 R
#include <linux/sysctl.h>3 Y6 `$ `) e! q" G: o! C {( w
#include <linux/mm.h>4 D D* ^! \& K% A; ] V7 c4 q4 w
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>0 l3 J0 X! w) b8 f$ r C' \' y$ Q
#include <mach/irqs.h>- n; T n) m9 P- O, }
#include <asm/hardware/edma.h>7 C1 m# D5 ?, P" u8 D
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG; G! E0 x& S* H$ r) e9 u
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS) X' R$ R# H" e& D7 n1 n7 S- [
#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__); q) D9 ?0 e9 J x* Y
#else
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#define DMA_PRINTK( x... ); A; T5 l/ {& R
#define DMA_FN_IN8 s( p- m& `3 F+ X- O! H2 }% F
#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 e3 d$ b9 `) e! `
#define TCINTEN_SHIFT 20+ X5 k0 I3 Y7 Z) X4 K( L* S
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23* V8 v3 _; P4 {7 @2 l
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static volatile int irqraised1 = 0;* H/ Y9 b' l5 w" P% ~: |
static volatile int irqraised2 = 0;4 M' I B# X% N& r* }
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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);6 ~, I4 S$ E% N1 ]- ~8 ^3 r. r' m
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- z# E: Z! e( O% `3 |$ C
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dma_addr_t dmaphyssrc1 = 0;0 }. M+ [' |1 D) f4 m1 Q) ]
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;3 `! l- T* `6 Q5 L! G
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char *dmabufsrc1 = NULL;) W& H _& p$ P5 L4 e k" U
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;4 \9 \4 j5 |* Y" p' V; h
char *dmabufdest2 = NULL;' T& x- ]! {/ K
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static int acnt = 512;. s+ O' _0 r8 f
static int bcnt = 8;, |! X2 e! X/ U e$ |; D
static int ccnt = 8;& l/ g& X4 ]$ v3 H
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module_param(acnt, int, S_IRUGO);8 H( p* c9 F6 j/ E
module_param(bcnt, int, S_IRUGO);1 ^8 P7 e0 c# s- ~9 h4 q0 E
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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