Initial commit of a new iomd device. This device manages IOMD devices
for all ARM processors.
This commit is contained in:
mark
parent
64c91a1cc3
commit
45bd77d893
|
|
@ -0,0 +1,164 @@
|
|||
/* $NetBSD: iomd.c,v 1.1 1996/08/21 19:53:21 mark Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1996 Mark Brinicombe.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by Mark Brinicombe.
|
||||
* 4. The name of the company nor the name of the author may be used to
|
||||
* endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* RiscBSD kernel project
|
||||
*
|
||||
* iomd.c
|
||||
*
|
||||
* Probing and configuration for the IOMD
|
||||
*
|
||||
* Created : 10/10/95
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/device.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/user.h>
|
||||
#include <machine/io.h>
|
||||
#include <machine/katelib.h>
|
||||
#include <machine/cpu.h>
|
||||
#include <machine/iomd.h>
|
||||
|
||||
#include "iomd.h"
|
||||
#if NIOMD != 1
|
||||
#error Need at 1 IOMD device configured
|
||||
#endif
|
||||
|
||||
/* Declare prototypes */
|
||||
|
||||
/*
|
||||
* int iomdmatch(struct device *parent, void *match, void *aux)
|
||||
*
|
||||
* Just return ok for this.
|
||||
*/
|
||||
|
||||
int
|
||||
iomdmatch(parent, match, aux)
|
||||
struct device *parent;
|
||||
void *match;
|
||||
void *aux;
|
||||
{
|
||||
struct device *dev = match;
|
||||
|
||||
if (dev->dv_unit == 0)
|
||||
return(1);
|
||||
return(0);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* void iomdattach(struct device *parent, struct device *dev, void *aux)
|
||||
*
|
||||
* Identify the IOMD
|
||||
*/
|
||||
|
||||
void
|
||||
iomdattach(parent, self, aux)
|
||||
struct device *parent;
|
||||
struct device *self;
|
||||
void *aux;
|
||||
{
|
||||
int id;
|
||||
int refresh;
|
||||
int dma_time;
|
||||
int combo_time;
|
||||
int loop;
|
||||
|
||||
id = ReadByte(IOMD_ID0) | (ReadByte(IOMD_ID1) << 8);
|
||||
|
||||
printf(": ");
|
||||
|
||||
switch (id) {
|
||||
#ifdef CPU_ARM7500
|
||||
case ARM7500_IOC_ID:
|
||||
printf("ARM7500 IOMD ");
|
||||
refresh = ReadByte(IOMD_REFCR) & 0x0f;
|
||||
break;
|
||||
#else
|
||||
case RPC600_IOMD_ID:
|
||||
printf("RPC IOMD ");
|
||||
refresh = ReadByte(IOMD_VREFCR) & 0x09;
|
||||
break;
|
||||
#endif /* CPU_ARM7500 */
|
||||
default:
|
||||
printf("Unknown IOMD=%04x ", id);
|
||||
refresh = 0;
|
||||
break;
|
||||
}
|
||||
printf("\n");
|
||||
printf("%s: ", self->dv_xname);
|
||||
printf("DRAM refresh=");
|
||||
switch(refresh){
|
||||
case 0x0:
|
||||
printf("off");
|
||||
break;
|
||||
case 0x1:
|
||||
printf("16us");
|
||||
break;
|
||||
case 0x2:
|
||||
printf("32us");
|
||||
break;
|
||||
case 0x4:
|
||||
printf("64us");
|
||||
break;
|
||||
case 0x8:
|
||||
printf("128us");
|
||||
break;
|
||||
default:
|
||||
printf("unknown [%02x]", refresh);
|
||||
break;
|
||||
}
|
||||
|
||||
dma_time = ReadByte(IOMD_DMATCR);
|
||||
printf(", dma cycle types=");
|
||||
for (loop = 0; loop < 4; ++loop,dma_time = dma_time >> 2)
|
||||
printf("%c", 'A' + (dma_time & 3));
|
||||
|
||||
combo_time = ReadByte(IOMD_IOTCR);
|
||||
printf(", combo cycle type=%c", 'A' + ((combo_time >> 2) & 3));
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
struct cfattach iomd_ca = {
|
||||
sizeof(struct device), iomdmatch, iomdattach
|
||||
};
|
||||
|
||||
struct cfdriver iomd_cd = {
|
||||
NULL, "iomd", DV_DULL, 1
|
||||
};
|
||||
|
||||
/* End of iomd.c */
|
||||
Loading…
Reference in New Issue