/*- * Copyright (c) 1998 Doug Rabson * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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. * * $Id: isa.c,v 1.127 1999/05/22 15:18:12 dfr Exp $ */ /* * Modifications for Intel architecture by Garrett A. Wollman. * Copyright 1998 Massachusetts Institute of Technology * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby * granted, provided that both the above copyright notice and this * permission notice appear in all copies, that both the above * copyright notice and this permission notice appear in all * supporting documentation, and that the name of M.I.T. not be used * in advertising or publicity pertaining to distribution of the * software without specific, written prior permission. M.I.T. makes * no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied * warranty. * * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT * SHALL M.I.T. 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. */ #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/bus.h> #include <sys/malloc.h> #include <sys/module.h> #include <machine/bus.h> #include <sys/rman.h> #include <machine/resource.h> #include <isa/isavar.h> #include <isa/isa_common.h> void isa_init(void) { isa_wrap_old_drivers(); } /* * This implementation simply passes the request up to the parent * bus, which in our case is the special i386 nexus, substituting any * configured values if the caller defaulted. We can get away with * this because there is no special mapping for ISA resources on an Intel * platform. When porting this code to another architecture, it may be * necessary to interpose a mapping layer here. */ struct resource * isa_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { /* * Consider adding a resource definition. We allow rid 0-1 for * irq and drq, 0-3 for memory and 0-7 for ports which is * sufficient for isapnp. */ int passthrough = (device_get_parent(child) != bus); int isdefault = (start == 0UL && end == ~0UL); struct resource_list *rl; struct resource_list_entry *rle; if (!passthrough && !isdefault) { rl = device_get_ivars(child); rle = resource_list_find(rl, type, *rid); if (!rle) { if (*rid < 0) return 0; if (type == SYS_RES_IRQ && *rid > 1) return 0; if (type == SYS_RES_DRQ && *rid > 1) return 0; if (type != SYS_RES_MEMORY && *rid > 3) return 0; if (type == SYS_RES_IOPORT && *rid > 7) return 0; resource_list_add(rl, type, *rid, start, end, count); } } return resource_list_alloc(bus, child, type, rid, start, end, count, flags); } int isa_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { return resource_list_release(bus, child, type, rid, r); } /* * We can't use the bus_generic_* versions of these methods because those * methods always pass the bus param as the requesting device, and we need * to pass the child (the i386 nexus knows about this and is prepared to * deal). */ int isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags, void (*ihand)(void *), void *arg, void **cookiep) { return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags, ihand, arg, cookiep)); } int isa_teardown_intr(device_t bus, device_t child, struct resource *r, void *cookie) { return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie)); }