153 lines
5.2 KiB
C
153 lines
5.2 KiB
C
/*-
|
|
* SPDX-License-Identifier: (BSD-2-Clause-FreeBSD AND ISC)
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*-
|
|
* 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/bus.h>
|
|
#include <sys/kernel.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(device_t dev)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* 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,
|
|
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
|
|
{
|
|
/*
|
|
* Consider adding a resource definition.
|
|
*/
|
|
int passthrough = (device_get_parent(child) != bus);
|
|
int isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
struct resource_list *rl = &idev->id_resources;
|
|
struct resource_list_entry *rle;
|
|
|
|
if (!passthrough && !isdefault) {
|
|
rle = resource_list_find(rl, type, *rid);
|
|
if (!rle) {
|
|
if (*rid < 0)
|
|
return 0;
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
if (*rid >= ISA_NIRQ)
|
|
return 0;
|
|
break;
|
|
case SYS_RES_DRQ:
|
|
if (*rid >= ISA_NDRQ)
|
|
return 0;
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
if (*rid >= ISA_NMEM)
|
|
return 0;
|
|
break;
|
|
case SYS_RES_IOPORT:
|
|
if (*rid >= ISA_NPORT)
|
|
return 0;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
resource_list_add(rl, type, *rid, start, end, count);
|
|
}
|
|
}
|
|
|
|
return resource_list_alloc(rl, 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)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(child);
|
|
struct resource_list *rl = &idev->id_resources;
|
|
|
|
return resource_list_release(rl, bus, child, type, rid, r);
|
|
}
|
|
|
|
/*
|
|
* On this platform, isa can also attach to the legacy bus.
|
|
*/
|
|
DRIVER_MODULE(isa, legacy, isa_driver, 0, 0);
|
|
|
|
/*
|
|
* Attach the ISA bus to the xenpv bus in order to get syscons.
|
|
*/
|
|
DRIVER_MODULE(isa, xenpv, isa_driver, 0, 0);
|