isa.c revision 47616
14Srgrimes/*- 245720Speter * Copyright (c) 1998 Doug Rabson 34Srgrimes * All rights reserved. 44Srgrimes * 54Srgrimes * Redistribution and use in source and binary forms, with or without 64Srgrimes * modification, are permitted provided that the following conditions 74Srgrimes * are met: 84Srgrimes * 1. Redistributions of source code must retain the above copyright 94Srgrimes * notice, this list of conditions and the following disclaimer. 104Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 114Srgrimes * notice, this list of conditions and the following disclaimer in the 124Srgrimes * documentation and/or other materials provided with the distribution. 134Srgrimes * 1445720Speter * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 154Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 164Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1745720Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 184Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 194Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 204Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 214Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 224Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 234Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 244Srgrimes * SUCH DAMAGE. 254Srgrimes * 2647616Sdfr * $Id: isa.c,v 1.127 1999/05/22 15:18:12 dfr Exp $ 274Srgrimes */ 284Srgrimes 294Srgrimes/* 3045720Speter * Modifications for Intel architecture by Garrett A. Wollman. 3145720Speter * Copyright 1998 Massachusetts Institute of Technology 324Srgrimes * 3345720Speter * Permission to use, copy, modify, and distribute this software and 3445720Speter * its documentation for any purpose and without fee is hereby 3545720Speter * granted, provided that both the above copyright notice and this 3645720Speter * permission notice appear in all copies, that both the above 3745720Speter * copyright notice and this permission notice appear in all 3845720Speter * supporting documentation, and that the name of M.I.T. not be used 3945720Speter * in advertising or publicity pertaining to distribution of the 4045720Speter * software without specific, written prior permission. M.I.T. makes 4145720Speter * no representations about the suitability of this software for any 4245720Speter * purpose. It is provided "as is" without express or implied 4345720Speter * warranty. 4445720Speter * 4545720Speter * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 4645720Speter * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 4745720Speter * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 4845720Speter * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 4945720Speter * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 5045720Speter * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 5145720Speter * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 5245720Speter * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 5345720Speter * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 5445720Speter * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 5545720Speter * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5645720Speter * SUCH DAMAGE. 574Srgrimes */ 584Srgrimes 592056Swollman#include <sys/param.h> 6013644Sbde#include <sys/systm.h> 6145720Speter#include <sys/kernel.h> 6245720Speter#include <sys/bus.h> 632056Swollman#include <sys/malloc.h> 6445720Speter#include <sys/module.h> 6545720Speter#include <machine/bus.h> 6645720Speter#include <sys/rman.h> 674Srgrimes 6845720Speter#include <machine/resource.h> 6926157Sse 7045720Speter#include <isa/isavar.h> 7147398Sdfr#include <isa/isa_common.h> 7229613Sjmg 7347398Sdfrvoid 7447398Sdfrisa_init(void) 7531457Sjmg{ 7647398Sdfr isa_wrap_old_drivers(); 773258Sdg} 788876Srgrimes 7947178Sdfr/* 8045720Speter * This implementation simply passes the request up to the parent 8145720Speter * bus, which in our case is the special i386 nexus, substituting any 8245720Speter * configured values if the caller defaulted. We can get away with 8345720Speter * this because there is no special mapping for ISA resources on an Intel 8445720Speter * platform. When porting this code to another architecture, it may be 8545720Speter * necessary to interpose a mapping layer here. 8615147Ssmpatel */ 8747398Sdfrstruct resource * 8845720Speterisa_alloc_resource(device_t bus, device_t child, int type, int *rid, 8945720Speter u_long start, u_long end, u_long count, u_int flags) 9015147Ssmpatel{ 9145720Speter /* 9247398Sdfr * Consider adding a resource definition. We allow rid 0-1 for 9347616Sdfr * irq and drq, 0-3 for memory and 0-7 for ports which is 9447616Sdfr * sufficient for isapnp. 9545720Speter */ 9647398Sdfr int passthrough = (device_get_parent(child) != bus); 9747398Sdfr int isdefault = (start == 0UL && end == ~0UL); 9847398Sdfr struct resource_list *rl; 9947398Sdfr struct resource_list_entry *rle; 10047398Sdfr 10147398Sdfr if (!passthrough && !isdefault) { 10247398Sdfr rl = device_get_ivars(child); 10347398Sdfr rle = resource_list_find(rl, type, *rid); 10447398Sdfr if (!rle) { 10547398Sdfr if (*rid < 0) 10647398Sdfr return 0; 10747616Sdfr if (type == SYS_RES_IRQ && *rid > 1) 10847398Sdfr return 0; 10947616Sdfr if (type == SYS_RES_DRQ && *rid > 1) 11047616Sdfr return 0; 11147616Sdfr if (type != SYS_RES_MEMORY && *rid > 3) 11247616Sdfr return 0; 11347398Sdfr if (type == SYS_RES_IOPORT && *rid > 7) 11447398Sdfr return 0; 11547398Sdfr resource_list_add(rl, type, *rid, start, end, count); 11645720Speter } 11745720Speter } 11847398Sdfr 11947398Sdfr return resource_list_alloc(bus, child, type, rid, 12047398Sdfr start, end, count, flags); 12145720Speter} 12215147Ssmpatel 12347398Sdfrint 12445720Speterisa_release_resource(device_t bus, device_t child, int type, int rid, 12545720Speter struct resource *r) 12645720Speter{ 12747398Sdfr return resource_list_release(bus, child, type, rid, r); 1284Srgrimes} 1294Srgrimes 1304Srgrimes/* 13145720Speter * We can't use the bus_generic_* versions of these methods because those 13245720Speter * methods always pass the bus param as the requesting device, and we need 13345720Speter * to pass the child (the i386 nexus knows about this and is prepared to 13445720Speter * deal). 1354Srgrimes */ 13647398Sdfrint 13746743Sdfrisa_setup_intr(device_t bus, device_t child, struct resource *r, int flags, 13845720Speter void (*ihand)(void *), void *arg, void **cookiep) 13931457Sjmg{ 14046743Sdfr return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags, 14146743Sdfr ihand, arg, cookiep)); 1424Srgrimes} 1434Srgrimes 14447398Sdfrint 14545720Speterisa_teardown_intr(device_t bus, device_t child, struct resource *r, 14645720Speter void *cookie) 14727639Smsmith{ 14845720Speter return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie)); 14927639Smsmith} 150