268 lines
7.1 KiB
C
268 lines
7.1 KiB
C
/*-
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* Copyright (c) 1993, 1994 Charles Hannum.
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
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* $Id: isa.c,v 1.56 1994/10/07 09:08:29 mycroft Exp $
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*/
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/*
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* Code to manage AT bus
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <machine/pio.h>
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#include <machine/cpufunc.h>
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#include <i386/isa/isareg.h>
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#include <i386/isa/isa_device.h>
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#include <i386/isa/isavar.h>
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#include <i386/isa/ic/i8042.h>
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/* sorry, has to be here, no place else really suitable */
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#include <machine/pc/display.h>
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u_short *Crtat = (u_short *)MONO_BUF;
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/*
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* Configure all ISA devices
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*
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* XXX This code is a hack. It wants to be new config, but can't be until the
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* interrupt system is redone. For now, we do some gross hacks to make it look
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* 99% like new config.
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*/
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static char *msgs[3] = { "", " not configured\n", " unsupported\n" };
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struct cfdata *
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config_search(fn, parent, aux)
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cfmatch_t fn;
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struct device *parent;
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void *aux;
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{
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struct cfdata *cf = 0;
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struct device *dv = 0;
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size_t devsize;
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struct cfdriver *cd;
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struct isa_device *id,
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*idp = parent ? (void *)parent->dv_cfdata->cf_loc : 0;
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for (id = isa_devtab; id->id_driver; id++) {
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if (id->id_state == FSTATE_FOUND)
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continue;
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if (id->id_parent != idp)
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continue;
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cd = id->id_driver;
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if (id->id_unit < cd->cd_ndevs) {
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if (cd->cd_devs[id->id_unit] != 0)
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continue;
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} else {
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int old = cd->cd_ndevs, new;
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void **nsp;
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if (old == 0)
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new = MINALLOCSIZE / sizeof(void *);
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else
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new = old * 2;
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while (new <= id->id_unit)
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new *= 2;
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cd->cd_ndevs = new;
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nsp = malloc(new * sizeof(void *), M_DEVBUF, M_NOWAIT);
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if (nsp == 0)
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panic("config_search: %sing dev array",
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old != 0 ? "expand" : "creat");
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bzero(nsp + old, (new - old) * sizeof(void *));
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if (old != 0) {
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bcopy(cd->cd_devs, nsp, old * sizeof(void *));
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free(cd->cd_devs, M_DEVBUF);
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}
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cd->cd_devs = nsp;
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}
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if (!cf) {
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cf = malloc(sizeof(struct cfdata), M_DEVBUF, M_NOWAIT);
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if (!cf)
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panic("config_search: creating cfdata");
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}
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cf->cf_driver = cd;
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cf->cf_unit = id->id_unit;
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cf->cf_fstate = 0;
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cf->cf_loc = (void *)id;
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cf->cf_flags = id->id_flags;
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cf->cf_parents = 0;
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cf->cf_ivstubs = 0;
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if (dv && devsize != cd->cd_devsize) {
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free(dv, M_DEVBUF);
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dv = 0;
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}
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if (!dv) {
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devsize = cd->cd_devsize;
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dv = malloc(devsize, M_DEVBUF, M_NOWAIT);
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if (!dv)
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panic("config_search: creating softc");
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}
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bzero(dv, cd->cd_devsize);
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dv->dv_class = cd->cd_class;
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dv->dv_cfdata = cf;
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dv->dv_unit = id->id_unit;
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sprintf(dv->dv_xname, "%s%d", cd->cd_name, id->id_unit);
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dv->dv_parent = parent;
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cd->cd_devs[id->id_unit] = dv;
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if (fn) {
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if ((*fn)(parent, dv, aux))
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return cf;
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} else {
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if ((*cd->cd_match)(parent, dv, aux))
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return cf;
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}
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cd->cd_devs[id->id_unit] = 0;
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}
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if (cf)
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free(cf, M_DEVBUF);
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if (dv)
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free(dv, M_DEVBUF);
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return 0;
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}
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void
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config_attach(parent, cf, aux, print)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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cfprint_t print;
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{
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struct isa_device *id = (void *)cf->cf_loc;
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struct cfdriver *cd = cf->cf_driver;
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struct device *dv = cd->cd_devs[id->id_unit];
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cf->cf_fstate = id->id_state = FSTATE_FOUND;
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printf("%s at %s", dv->dv_xname, parent ? parent->dv_xname : "isa0");
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if (print)
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(void) (*print)(aux, (char *)0);
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(*cd->cd_attach)(parent, dv, aux);
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}
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int
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config_found(parent, aux, print)
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struct device *parent;
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void *aux;
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cfprint_t print;
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{
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struct cfdata *cf;
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if ((cf = config_search((cfmatch_t)NULL, parent, aux)) != NULL) {
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config_attach(parent, cf, aux, print);
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return 1;
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}
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if (print)
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printf(msgs[(*print)(aux, parent->dv_xname)]);
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return 0;
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}
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int
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isaprint(aux, isa)
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void *aux;
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char *isa;
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{
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struct isa_attach_args *ia = aux;
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if (ia->ia_iosize)
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printf(" port 0x%x", ia->ia_iobase);
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if (ia->ia_iosize > 1)
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printf("-0x%x", ia->ia_iobase + ia->ia_iosize - 1);
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if (ia->ia_msize)
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printf(" iomem 0x%x", ia->ia_maddr - atdevbase + 0xa0000);
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if (ia->ia_msize > 1)
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printf("-0x%x",
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ia->ia_maddr - atdevbase + 0xa0000 + ia->ia_msize - 1);
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if (ia->ia_irq)
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printf(" irq %d", ffs(ia->ia_irq) - 1);
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if (ia->ia_drq != (u_short)-1)
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printf(" drq %d", ia->ia_drq);
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/* XXXX print flags */
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return QUIET;
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}
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int
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isasubmatch(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct isa_device *id = (void *)self->dv_cfdata->cf_loc;
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struct isa_attach_args ia;
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ia.ia_iobase = id->id_iobase;
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ia.ia_iosize = 0x666;
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ia.ia_irq = id->id_irq;
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ia.ia_drq = id->id_drq;
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ia.ia_maddr = id->id_maddr - 0xa0000 + atdevbase;
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ia.ia_msize = id->id_msize;
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if (!(*id->id_driver->cd_match)(parent, self, &ia)) {
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/*
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* If we don't do this, isa_configure() will repeatedly try to
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* probe devices that weren't found. But we need to be careful
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* to do it only for the ISA bus, or we would cause things like
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* `com0 at ast? slave ?' to not probe on the second ast.
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*/
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if (!parent)
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id->id_state = FSTATE_FOUND;
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return 0;
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}
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config_attach(parent, self->dv_cfdata, &ia, isaprint);
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return 1;
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}
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void
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isa_configure()
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{
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startrtclock();
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while (config_search(isasubmatch, NULL, NULL));
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printf("biomask %x netmask %x ttymask %x\n",
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(u_short)imask[IPL_BIO], (u_short)imask[IPL_NET],
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(u_short)imask[IPL_TTY]);
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spl0();
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}
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