[dragonfly.git] / sys / bus / isa / i386 / isa.c

/*-
 * 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.
 *
 * $FreeBSD: src/sys/i386/isa/isa.c,v 1.132.2.5 2002/03/03 05:42:50 nyan 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/bus.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <sys/machintr.h>

#include "../isavar.h"
#include "../isa_common.h"

void
isa_init(void)
{
}

/*
 * 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, int cpuid)
{
	/*
	 * 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 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;
				cpuid = machintr_legacy_intr_cpuid(start);
				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, cpuid);
		}
	}

	return resource_list_alloc(rl, bus, child, type, rid,
				   start, end, count, flags, cpuid);
}

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);
}

/*
 * 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, lwkt_serialize_t serializer)
{
	return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
			       ihand, arg, cookiep, serializer, NULL));
}

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));
}
Commit	Line	Data
984263bc MD	1	/*-
	2	* Copyright (c) 1998 Doug Rabson
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	*
	14	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	15	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	16	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	17	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	18	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	19	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	20	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	21	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	22	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	23	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	24	* SUCH DAMAGE.
	25	*
	26	* $FreeBSD: src/sys/i386/isa/isa.c,v 1.132.2.5 2002/03/03 05:42:50 nyan Exp $
	27	*/
	28
	29	/*
	30	* Modifications for Intel architecture by Garrett A. Wollman.
	31	* Copyright 1998 Massachusetts Institute of Technology
	32	*
	33	* Permission to use, copy, modify, and distribute this software and
	34	* its documentation for any purpose and without fee is hereby
	35	* granted, provided that both the above copyright notice and this
	36	* permission notice appear in all copies, that both the above
	37	* copyright notice and this permission notice appear in all
	38	* supporting documentation, and that the name of M.I.T. not be used
	39	* in advertising or publicity pertaining to distribution of the
	40	* software without specific, written prior permission. M.I.T. makes
	41	* no representations about the suitability of this software for any
	42	* purpose. It is provided "as is" without express or implied
	43	* warranty.
	44	*
	45	* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
	46	* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
	47	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	48	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
	49	* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	50	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	51	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
	52	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	53	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	54	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	55	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	56	* SUCH DAMAGE.
	57	*/
	58
	59	#include <sys/param.h>
	60	#include <sys/bus.h>
	61	#include <sys/malloc.h>
984263bc	62	#include <sys/rman.h>
4f7fe8c7	63	#include <sys/machintr.h>
984263bc	64
1f2de5d4 MD	65	#include "../isavar.h"
1f2de5d4 MD	66	#include "../isa_common.h"
984263bc MD	67
	68	void
	69	isa_init(void)
	70	{
984263bc MD	71	}
	72
	73	/*
	74	* This implementation simply passes the request up to the parent
	75	* bus, which in our case is the special i386 nexus, substituting any
	76	* configured values if the caller defaulted. We can get away with
	77	* this because there is no special mapping for ISA resources on an Intel
	78	* platform. When porting this code to another architecture, it may be
	79	* necessary to interpose a mapping layer here.
	80	*/
	81	struct resource *
	82	isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
4f7fe8c7	83	u_long start, u_long end, u_long count, u_int flags, int cpuid)
984263bc MD	84	{
	85	/*
	86	* Consider adding a resource definition. We allow rid 0-1 for
	87	* irq and drq, 0-3 for memory and 0-7 for ports which is
	88	* sufficient for isapnp.
	89	*/
	90	int passthrough = (device_get_parent(child) != bus);
	91	int isdefault = (start == 0UL && end == ~0UL);
	92	struct isa_device* idev = DEVTOISA(child);
	93	struct resource_list *rl = &idev->id_resources;
	94	struct resource_list_entry *rle;
	95
	96	if (!passthrough && !isdefault) {
	97	rle = resource_list_find(rl, type, *rid);
	98	if (!rle) {
	99	if (*rid < 0)
	100	return 0;
	101	switch (type) {
	102	case SYS_RES_IRQ:
	103	if (*rid >= ISA_NIRQ)
	104	return 0;
bec969af	105	cpuid = machintr_legacy_intr_cpuid(start);
984263bc MD	106	break;
	107	case SYS_RES_DRQ:
	108	if (*rid >= ISA_NDRQ)
	109	return 0;
	110	break;
	111	case SYS_RES_MEMORY:
	112	if (*rid >= ISA_NMEM)
	113	return 0;
	114	break;
	115	case SYS_RES_IOPORT:
	116	if (*rid >= ISA_NPORT)
	117	return 0;
	118	break;
	119	default:
	120	return 0;
	121	}
1b000e91	122	resource_list_add(rl, type, *rid, start, end,
4f7fe8c7	123	count, cpuid);
984263bc MD	124	}
	125	}
	126
	127	return resource_list_alloc(rl, bus, child, type, rid,
4f7fe8c7	128	start, end, count, flags, cpuid);
984263bc MD	129	}
984263bc MD	130
984263bc MD	131	int
	132	isa_release_resource(device_t bus, device_t child, int type, int rid,
	133	struct resource *r)
	134	{
	135	struct isa_device* idev = DEVTOISA(child);
	136	struct resource_list *rl = &idev->id_resources;
984263bc	137
984263bc MD	138	return resource_list_release(rl, bus, child, type, rid, r);
	139	}
	140
	141	/*
	142	* We can't use the bus_generic_* versions of these methods because those
	143	* methods always pass the bus param as the requesting device, and we need
	144	* to pass the child (the i386 nexus knows about this and is prepared to
	145	* deal).
	146	*/
	147	int
	148	isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
e9cb6d99 MD	149	void (ihand)(void ), void *arg,
e9cb6d99 MD	150	void **cookiep, lwkt_serialize_t serializer)
984263bc MD	151	{
984263bc MD	152	return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
0e6f0e28	153	ihand, arg, cookiep, serializer, NULL));
984263bc MD	154	}
	155
	156	int
	157	isa_teardown_intr(device_t bus, device_t child, struct resource *r,
	158	void *cookie)
	159	{
	160	return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie));
	161	}