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$ `3 Q$ H" \, z# [
/*
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* edma_test.c+ J" ~' s+ T' m* I
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.3 E( T6 t1 N) I3 m( D& J
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' g! f) e P* X1 H
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.) a3 j0 _, S3 c/ x+ l' s5 V
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. B8 I1 K6 ]' \* g; x
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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 as
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* published by the Free Software Foundation version 2.8 s/ [8 H9 H6 }6 v2 j! B2 g
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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 warranty0 W: J4 ~, G, R5 M2 ^
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.5 O$ D% e" a3 k1 B" \
*/
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#include <linux/module.h>1 m4 g! B3 p% s$ d( ?
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>( W6 k* K6 D+ {
#include <linux/interrupt.h>/ H& q+ ^( F1 T& m' D: h
#include <asm/io.h>; I0 C M J/ P/ c1 P
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>, S3 L1 x% _. l% Z
#include <linux/mm.h>* U# v, m5 d1 h3 B) X" I% _# S- z5 E
#include <linux/dma-mapping.h>
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#include <mach/memory.h>+ X6 f( H, c/ @0 b
#include <mach/hardware.h>$ p/ k1 p: a/ z t
#include <mach/irqs.h>/ {7 |) r; d, k7 e
#include <asm/hardware/edma.h>1 Z# R5 t/ S. N- c
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#undef EDMA3_DEBUG
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/*#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); Q2 A/ D' F5 n7 U; B
#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... ), T) j$ M# A* e9 @6 G
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ C6 X+ y$ T( ?) G" @
#define STATIC_SHIFT 3/ s0 O0 A, T5 }' u+ h5 x
#define TCINTEN_SHIFT 205 E4 P+ f y" ]
#define ITCINTEN_SHIFT 21/ \. a0 ~4 R( g" H; Z- p* I2 X
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23) h1 U6 o0 g9 l
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static volatile int irqraised1 = 0;+ ~# L% A6 H' b T# z
static volatile int irqraised2 = 0;- D3 Z9 @4 ~( J1 b0 y$ Q: M$ J
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ b% U/ a( n' u8 B
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); l; O7 N, A' Y9 v' @0 H q
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;7 @' v5 b+ }- X! ?1 d
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;/ ]% j7 k/ T3 m8 {
dma_addr_t dmaphysdest2 = 0;2 N" K; p5 q6 x5 P8 J1 B8 ~! l
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char *dmabufsrc1 = NULL;, @. d4 \5 p+ Q! q
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;+ c! V, K" D; r) \ N* v3 k
static int bcnt = 8;* G- p7 k. J8 P: c
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);6 D- V; q1 n6 @2 K+ 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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动