122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/* $NetBSD: iobus.c,v 1.16 2011/07/19 16:05:10 dyoung Exp $ */
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/*-
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* Copyright (c) 1998 Ben Harris
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* iobus.c - when the IORQ* calls...
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: iobus.c,v 1.16 2011/07/19 16:05:10 dyoung Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <machine/memcreg.h>
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#include <arch/acorn26/iobus/iobusvar.h>
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#include "locators.h"
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static int iobus_match(device_t parent, cfdata_t cf, void *aux);
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static void iobus_attach(device_t parent, device_t self, void *aux);
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static int iobus_search_ioc(device_t parent, cfdata_t cf,
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const int *ldesc, void *aux);
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static int iobus_search(device_t parent, cfdata_t cf,
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const int *ldesc, void *aux);
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static int iobus_print(void *aux, const char *pnp);
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CFATTACH_DECL_NEW(iobus, 0, iobus_match, iobus_attach, NULL, NULL);
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device_t the_iobus;
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static int
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iobus_match(device_t parent, cfdata_t cf, void *aux)
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{
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/* There can be only one! */
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if (the_iobus == NULL)
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return 1;
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return 0;
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}
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static void
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iobus_attach(device_t parent, device_t self, void *aux)
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{
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the_iobus = self;
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aprint_normal("\n");
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/*
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* Always look for the IOC first, since stuff under there determines
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* what else is present.
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*/
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config_search_ia(iobus_search_ioc, self, "iobus", NULL);
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config_search_ia(iobus_search, self, "iobus", NULL);
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}
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extern struct bus_space iobus_bs_tag;
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static int
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iobus_search_ioc(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
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{
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struct iobus_attach_args ioa;
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ioa.ioa_tag = &iobus_bs_tag;
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ioa.ioa_base = (bus_addr_t)MEMC_IO_BASE + cf->cf_loc[IOBUSCF_BASE];
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if (strcmp(cf->cf_name, "ioc") == 0 &&
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config_match(parent, cf, &ioa) > 0)
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config_attach(parent, cf, &ioa, iobus_print);
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return 0;
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}
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static int
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iobus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
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{
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struct iobus_attach_args ioa;
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ioa.ioa_tag = &iobus_bs_tag;
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ioa.ioa_base = (bus_addr_t)MEMC_IO_BASE + cf->cf_loc[IOBUSCF_BASE];
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if (config_match(parent, cf, &ioa) > 0)
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config_attach(parent, cf, &ioa, iobus_print);
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return 0;
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}
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static int
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iobus_print(void *aux, const char *pnp)
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{
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struct iobus_attach_args *ioa = aux;
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if (ioa->ioa_base != IOBUSCF_BASE_DEFAULT)
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aprint_normal(" base 0x%06lx",
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ioa->ioa_base - (bus_addr_t)MEMC_IO_BASE);
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return UNCONF;
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}
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