396 lines
10 KiB
C
396 lines
10 KiB
C
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/*-
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* Copyright (c) 1999 Doug Rabson
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $Id$
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*/
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/*
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* Modifications for Intel architecture by Garrett A. Wollman.
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* Copyright 1998 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby
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* granted, provided that both the above copyright notice and this
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* permission notice appear in all copies, that both the above
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* copyright notice and this permission notice appear in all
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* supporting documentation, and that the name of M.I.T. not be used
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* in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission. M.I.T. makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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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/*
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* Parts of the ISA bus implementation common to all architectures.
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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/bus.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <isa/isavar.h>
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#include <isa/isa_common.h>
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#ifdef __alpha__ /* XXX workaround a stupid warning */
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#include <alpha/isa/isavar.h>
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#endif
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MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
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static devclass_t isa_devclass;
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/*
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* At 'probe' time, we add all the devices which we know about to the
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* bus. The generic attach routine will probe and attach them if they
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* are alive.
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*/
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static int
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isa_probe(device_t dev)
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{
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device_set_desc(dev, "ISA bus");
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isa_init(); /* Allow machdep code to initialise */
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return bus_generic_probe(dev);
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}
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extern device_t isa_bus_device;
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static int
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isa_attach(device_t dev)
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{
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/*
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* Arrange for bus_generic_attach(dev) to be called later.
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*/
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isa_bus_device = dev;
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return 0;
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}
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/*
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* Add a new child with default ivars.
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*/
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static device_t
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isa_add_child(device_t dev, device_t place, const char *name, int unit)
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{
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struct isa_device *idev;
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idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT);
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if (!idev)
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return 0;
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bzero(idev, sizeof *idev);
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resource_list_init(&idev->id_resources);
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idev->id_flags = 0;
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if (place)
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return device_add_child_after(dev, place, name, unit, idev);
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else
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return device_add_child(dev, name, unit, idev);
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}
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static void
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isa_print_resources(struct resource_list *rl, const char *name, int type,
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const char *format)
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{
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struct resource_list_entry *rle0 = resource_list_find(rl, type, 0);
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struct resource_list_entry *rle1 = resource_list_find(rl, type, 1);
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if (rle0 || rle1) {
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printf(" %s ", name);
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if (rle0) {
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printf(format, rle0->start);
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if (rle0->count > 1) {
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printf("-");
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printf(format, rle0->start + rle0->count - 1);
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}
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}
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if (rle1) {
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if (rle0)
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printf(",");
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printf(format, rle1->start);
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if (rle1->count > 1) {
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printf("-");
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printf(format, rle1->start + rle1->count - 1);
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}
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}
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}
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}
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static void
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isa_print_child(device_t bus, device_t dev)
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{
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struct isa_device *idev = DEVTOISA(dev);
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struct resource_list *rl = &idev->id_resources;
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if (SLIST_FIRST(rl) || idev->id_flags)
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printf(" at");
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isa_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx");
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isa_print_resources(rl, "iomem", SYS_RES_MEMORY, "%#lx");
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isa_print_resources(rl, "irq", SYS_RES_IRQ, "%ld");
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isa_print_resources(rl, "drq", SYS_RES_DRQ, "%ld");
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if (idev->id_flags)
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printf(" flags %#x", idev->id_flags);
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printf(" on %s%d",
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device_get_name(bus), device_get_unit(bus));
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}
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static int
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isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
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{
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struct isa_device* idev = DEVTOISA(dev);
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struct resource_list *rl = &idev->id_resources;
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struct resource_list_entry *rle;
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switch (index) {
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case ISA_IVAR_PORT_0:
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rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
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if (rle)
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*result = rle->start;
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else
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*result = -1;
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break;
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case ISA_IVAR_PORT_1:
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rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
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if (rle)
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*result = rle->start;
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else
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*result = -1;
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break;
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case ISA_IVAR_PORTSIZE_0:
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rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
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if (rle)
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*result = rle->count;
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else
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*result = 0;
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break;
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case ISA_IVAR_PORTSIZE_1:
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rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
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if (rle)
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*result = rle->count;
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else
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*result = 0;
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break;
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case ISA_IVAR_MADDR_0:
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rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
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if (rle)
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*result = rle->start;
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else
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*result = -1;
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break;
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case ISA_IVAR_MADDR_1:
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rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
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if (rle)
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*result = rle->start;
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else
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*result = -1;
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break;
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case ISA_IVAR_MSIZE_0:
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rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
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if (rle)
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*result = rle->count;
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else
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*result = 0;
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break;
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case ISA_IVAR_MSIZE_1:
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rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
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if (rle)
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*result = rle->count;
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else
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*result = 0;
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break;
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case ISA_IVAR_IRQ_0:
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rle = resource_list_find(rl, SYS_RES_IRQ, 0);
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if (rle)
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*result = rle->start;
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else
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*result = -1;
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break;
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case ISA_IVAR_IRQ_1:
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rle = resource_list_find(rl, SYS_RES_IRQ, 1);
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if (rle)
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*result = rle->start;
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else
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*result = -1;
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break;
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case ISA_IVAR_DRQ_0:
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rle = resource_list_find(rl, SYS_RES_DRQ, 0);
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if (rle)
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*result = rle->start;
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else
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*result = -1;
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break;
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case ISA_IVAR_DRQ_1:
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rle = resource_list_find(rl, SYS_RES_DRQ, 1);
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if (rle)
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*result = rle->start;
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else
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*result = -1;
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break;
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case ISA_IVAR_FLAGS:
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*result = idev->id_flags;
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break;
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}
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return ENOENT;
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}
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static int
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isa_write_ivar(device_t bus, device_t dev,
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int index, uintptr_t value)
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{
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struct isa_device* idev = DEVTOISA(dev);
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switch (index) {
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case ISA_IVAR_PORT_0:
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case ISA_IVAR_PORT_1:
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case ISA_IVAR_PORTSIZE_0:
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case ISA_IVAR_PORTSIZE_1:
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case ISA_IVAR_MADDR_0:
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case ISA_IVAR_MADDR_1:
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case ISA_IVAR_MSIZE_0:
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case ISA_IVAR_MSIZE_1:
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case ISA_IVAR_IRQ_0:
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case ISA_IVAR_IRQ_1:
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case ISA_IVAR_DRQ_0:
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case ISA_IVAR_DRQ_1:
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return EINVAL;
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case ISA_IVAR_FLAGS:
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idev->id_flags = value;
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break;
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default:
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return (ENOENT);
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}
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return (0);
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}
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static int
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isa_set_resource(device_t dev, device_t child, int type, int rid,
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u_long start, u_long count)
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{
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struct isa_device* idev = DEVTOISA(child);
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struct resource_list *rl = &idev->id_resources;
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if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
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&& type != SYS_RES_IRQ && type != SYS_RES_DRQ)
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return EINVAL;
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if (rid < 0 || rid > 1)
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return EINVAL;
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resource_list_add(rl, type, rid, start, start + count - 1, count);
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return 0;
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}
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static int
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isa_get_resource(device_t dev, device_t child, int type, int rid,
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u_long *startp, u_long *countp)
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{
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struct isa_device* idev = DEVTOISA(child);
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struct resource_list *rl = &idev->id_resources;
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struct resource_list_entry *rle;
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rle = resource_list_find(rl, type, rid);
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if (!rle)
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return ENOENT;
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*startp = rle->start;
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*countp = rle->count;
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return 0;
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}
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static device_method_t isa_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, isa_probe),
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DEVMETHOD(device_attach, isa_attach),
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DEVMETHOD(device_detach, bus_generic_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* Bus interface */
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DEVMETHOD(bus_add_child, isa_add_child),
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DEVMETHOD(bus_print_child, isa_print_child),
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DEVMETHOD(bus_read_ivar, isa_read_ivar),
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DEVMETHOD(bus_write_ivar, isa_write_ivar),
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DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
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DEVMETHOD(bus_release_resource, isa_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, isa_setup_intr),
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|
DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
|
||
|
|
|
||
|
|
/* ISA interface */
|
||
|
|
DEVMETHOD(isa_set_resource, isa_set_resource),
|
||
|
|
DEVMETHOD(isa_get_resource, isa_get_resource),
|
||
|
|
|
||
|
|
{ 0, 0 }
|
||
|
|
};
|
||
|
|
|
||
|
|
static driver_t isa_driver = {
|
||
|
|
"isa",
|
||
|
|
isa_methods,
|
||
|
|
1, /* no softc */
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ISA can be attached to a PCI-ISA bridge or directly to the nexus.
|
||
|
|
*/
|
||
|
|
DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
|
||
|
|
#ifdef __i386__
|
||
|
|
DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0);
|
||
|
|
#endif
|