615 lines
16 KiB
C
615 lines
16 KiB
C
/*-
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* Copyright (c) 1998 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: isa.c,v 1.124 1999/05/08 21:28:39 peter Exp $
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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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#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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MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
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/*
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* The structure used to attach devices to the isa bus.
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*/
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struct isa_device {
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int id_port[ISA_NPORT_IVARS];
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u_short id_portsize[ISA_NPORT_IVARS];
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vm_offset_t id_maddr[ISA_NMEM_IVARS];
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vm_size_t id_msize[ISA_NMEM_IVARS];
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int id_irq[ISA_NIRQ_IVARS];
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int id_drq[ISA_NDRQ_IVARS];
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int id_flags;
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struct resource *id_portres[ISA_NPORT_IVARS];
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struct resource *id_memres[ISA_NMEM_IVARS];
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struct resource *id_irqres[ISA_NIRQ_IVARS];
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struct resource *id_drqres[ISA_NDRQ_IVARS];
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};
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#define DEVTOISA(dev) ((struct isa_device *) device_get_ivars(dev))
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static devclass_t isa_devclass;
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static void
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isa_add_device(device_t dev, const char *name, int unit)
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{
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struct isa_device *idev;
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device_t child;
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int sensitive, t;
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static device_t last_sensitive;
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/* device-specific flag overrides any wildcard */
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sensitive = 0;
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if (resource_int_value(name, unit, "sensitive", &sensitive) != 0)
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resource_int_value(name, -1, "sensitive", &sensitive);
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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;
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bzero(idev, sizeof *idev);
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if (resource_int_value(name, unit, "port", &t) == 0)
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idev->id_port[0] = t;
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else
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idev->id_port[0] = -1;
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idev->id_port[1] = 0;
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if (resource_int_value(name, unit, "portsize", &t) == 0)
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idev->id_portsize[0] = t;
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else
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idev->id_portsize[0] = 0;
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idev->id_portsize[1] = 0;
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if (resource_int_value(name, unit, "maddr", &t) == 0)
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idev->id_maddr[0] = t;
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else
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idev->id_maddr[0] = 0;
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idev->id_maddr[1] = 0;
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if (resource_int_value(name, unit, "msize", &t) == 0)
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idev->id_msize[0] = t;
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else
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idev->id_msize[0] = 0;
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idev->id_msize[1] = 0;
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if (resource_int_value(name, unit, "flags", &t) == 0)
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idev->id_flags = t;
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else
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idev->id_flags = 0;
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if (resource_int_value(name, unit, "irq", &t) == 0)
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idev->id_irq[0] = t;
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else
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idev->id_irq[0] = -1;
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idev->id_irq[1] = -1;
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if (resource_int_value(name, unit, "drq", &t) == 0)
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idev->id_drq[0] = t;
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else
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idev->id_drq[0] = -1;
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idev->id_drq[1] = -1;
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if (sensitive)
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child = device_add_child_after(dev, last_sensitive, name,
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unit, idev);
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else
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child = device_add_child(dev, name, unit, idev);
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if (child == 0)
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return;
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else if (sensitive)
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last_sensitive = child;
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if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
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device_disable(child);
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}
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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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int i;
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static char buf[] = "isaXXX";
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device_set_desc(dev, "ISA bus");
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/*
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* Add all devices configured to be attached to isa0.
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*/
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sprintf(buf, "isa%d", device_get_unit(dev));
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for (i = resource_query_string(-1, "at", buf);
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i != -1;
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i = resource_query_string(i, "at", buf)) {
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if (strcmp(resource_query_name(i), "atkbd") == 0)
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continue; /* old GENERIC kludge */
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isa_add_device(dev, resource_query_name(i),
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resource_query_unit(i));
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}
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/*
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* and isa?
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*/
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for (i = resource_query_string(-1, "at", "isa");
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i != -1;
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i = resource_query_string(i, "at", "isa")) {
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if (strcmp(resource_query_name(i), "atkbd") == 0)
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continue; /* old GENERIC kludge */
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isa_add_device(dev, resource_query_name(i),
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resource_query_unit(i));
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}
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isa_wrap_old_drivers();
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return 0;
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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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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 *id = DEVTOISA(dev);
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if (id->id_port[0] > 0 || id->id_port[1] > 0
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|| id->id_maddr[0] > 0 || id->id_maddr[1] > 0
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|| id->id_irq[0] >= 0 || id->id_irq[1] >= 0
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|| id->id_drq[0] >= 0 || id->id_drq[1] >= 0)
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printf(" at");
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if (id->id_port[0] > 0 && id->id_port[1] > 0) {
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printf(" ports %#x", (u_int)id->id_port[0]);
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if (id->id_portsize[0] > 1)
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printf("-%#x", (u_int)(id->id_port[0]
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+ id->id_portsize[0] - 1));
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printf(" and %#x", (u_int)id->id_port[1]);
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if (id->id_portsize[1] > 1)
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printf("-%#x", (u_int)(id->id_port[1]
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+ id->id_portsize[1] - 1));
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} else if (id->id_port[0] > 0) {
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printf(" port %#x", (u_int)id->id_port[0]);
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if (id->id_portsize[0] > 1)
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printf("-%#x", (u_int)(id->id_port[0]
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+ id->id_portsize[0] - 1));
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} else if (id->id_port[1] > 0) {
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printf(" port %#x", (u_int)id->id_port[1]);
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if (id->id_portsize[1] > 1)
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printf("-%#x", (u_int)(id->id_port[1]
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+ id->id_portsize[1] - 1));
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}
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if (id->id_maddr[0] && id->id_maddr[1]) {
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printf(" iomem %#x", (u_int)id->id_maddr[0]);
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if (id->id_msize[0])
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printf("-%#x", (u_int)(id->id_maddr[0]
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+ id->id_msize[0] - 1));
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printf(" and %#x", (u_int)id->id_maddr[1]);
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if (id->id_msize[1])
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printf("-%#x", (u_int)(id->id_maddr[1]
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+ id->id_msize[1] - 1));
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} else if (id->id_maddr[0]) {
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printf(" iomem %#x", (u_int)id->id_maddr[0]);
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if (id->id_msize[0])
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printf("-%#x", (u_int)(id->id_maddr[0]
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+ id->id_msize[0] - 1));
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} else if (id->id_maddr[1]) {
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printf(" iomem %#x", (u_int)id->id_maddr[1]);
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if (id->id_msize[1])
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printf("-%#x", (u_int)(id->id_maddr[1]
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+ id->id_msize[1] - 1));
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}
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if (id->id_irq[0] >= 0 && id->id_irq[1] >= 0)
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printf(" irqs %d and %d", id->id_irq[0], id->id_irq[1]);
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else if (id->id_irq[0] >= 0)
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printf(" irq %d", id->id_irq[0]);
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else if (id->id_irq[1] >= 0)
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printf(" irq %d", id->id_irq[1]);
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if (id->id_drq[0] >= 0 && id->id_drq[1] >= 0)
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printf(" drqs %d and %d", id->id_drq[0], id->id_drq[1]);
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else if (id->id_drq[0] >= 0)
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printf(" drq %d", id->id_drq[0]);
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else if (id->id_drq[1] >= 0)
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printf(" drq %d", id->id_drq[1]);
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if (id->id_flags)
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printf(" flags %#x", id->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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switch (index) {
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case ISA_IVAR_PORT_0:
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*result = idev->id_port[0];
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break;
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case ISA_IVAR_PORT_1:
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*result = idev->id_port[1];
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break;
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case ISA_IVAR_PORTSIZE_0:
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*result = idev->id_portsize[0];
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break;
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case ISA_IVAR_PORTSIZE_1:
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*result = idev->id_portsize[1];
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break;
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case ISA_IVAR_MADDR_0:
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*result = idev->id_maddr[0];
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break;
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case ISA_IVAR_MADDR_1:
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*result = idev->id_maddr[1];
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break;
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case ISA_IVAR_MSIZE_0:
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*result = idev->id_msize[0];
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break;
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case ISA_IVAR_MSIZE_1:
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*result = idev->id_msize[1];
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break;
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case ISA_IVAR_IRQ_0:
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*result = idev->id_irq[0];
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break;
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case ISA_IVAR_IRQ_1:
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*result = idev->id_irq[1];
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break;
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case ISA_IVAR_DRQ_0:
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*result = idev->id_drq[0];
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break;
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case ISA_IVAR_DRQ_1:
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*result = idev->id_drq[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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/*
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* XXX -- this interface is pretty much irrelevant in the presence of
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* BUS_ALLOC_RESOURCE / BUS_RELEASE_RESOURCE (at least for the ivars which
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* are defined at this point).
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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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idev->id_port[0] = value;
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break;
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case ISA_IVAR_PORT_1:
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idev->id_port[1] = value;
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break;
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case ISA_IVAR_PORTSIZE_0:
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idev->id_portsize[0] = value;
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break;
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case ISA_IVAR_PORTSIZE_1:
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idev->id_portsize[1] = value;
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break;
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case ISA_IVAR_MADDR_0:
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idev->id_maddr[0] = value;
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break;
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case ISA_IVAR_MADDR_1:
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idev->id_maddr[1] = value;
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break;
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case ISA_IVAR_MSIZE_0:
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idev->id_msize[0] = value;
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break;
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case ISA_IVAR_MSIZE_1:
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idev->id_msize[1] = value;
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break;
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case ISA_IVAR_IRQ_0:
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idev->id_irq[0] = value;
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break;
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case ISA_IVAR_IRQ_1:
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idev->id_irq[1] = value;
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break;
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case ISA_IVAR_DRQ_0:
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idev->id_drq[0] = value;
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break;
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case ISA_IVAR_DRQ_1:
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idev->id_drq[1] = value;
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break;
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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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/*
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* This implementation simply passes the request up to the parent
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* bus, which in our case is the special i386 nexus, substituting any
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* configured values if the caller defaulted. We can get away with
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* this because there is no special mapping for ISA resources on an Intel
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* platform. When porting this code to another architecture, it may be
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* necessary to interpose a mapping layer here.
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*/
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static struct resource *
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isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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int isdefault;
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struct resource *rv, **rvp = 0;
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struct isa_device *id = DEVTOISA(child);
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if (child) {
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/*
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* If this is our child, then use the isa_device to find
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* defaults and to record results.
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*/
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if (device_get_devclass(device_get_parent(child)) == isa_devclass)
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id = DEVTOISA(child);
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else
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id = NULL;
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} else
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id = NULL;
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isdefault = (id != NULL && start == 0UL && end == ~0UL && *rid == 0);
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if (*rid > 1)
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return 0;
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switch (type) {
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case SYS_RES_IRQ:
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if (isdefault && id->id_irq[0] >= 0) {
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start = id->id_irq[0];
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end = id->id_irq[0];
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count = 1;
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}
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if (id)
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rvp = &id->id_irqres[*rid];
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break;
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case SYS_RES_DRQ:
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if (isdefault && id->id_drq[0] >= 0) {
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start = id->id_drq[0];
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end = id->id_drq[0];
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count = 1;
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}
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if (id)
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rvp = &id->id_drqres[*rid];
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break;
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case SYS_RES_MEMORY:
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if (isdefault && id->id_maddr[0]) {
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start = id->id_maddr[0];
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count = max(count, (u_long)id->id_msize[0]);
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end = id->id_maddr[0] + count;
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}
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if (id)
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rvp = &id->id_memres[*rid];
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break;
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case SYS_RES_IOPORT:
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if (isdefault && id->id_port[0]) {
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start = id->id_port[0];
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count = max(count, (u_long)id->id_portsize[0]);
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end = id->id_port[0] + count;
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}
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if (id)
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rvp = &id->id_portres[*rid];
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break;
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default:
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return 0;
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}
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/*
|
|
* If the client attempts to reallocate a resource without
|
|
* releasing what was there previously, die horribly so that
|
|
* he knows how he !@#$ed up.
|
|
*/
|
|
if (rvp && *rvp != 0)
|
|
panic("%s%d: (%d, %d) not free for %s%d\n",
|
|
device_get_name(bus), device_get_unit(bus),
|
|
type, *rid,
|
|
device_get_name(child), device_get_unit(child));
|
|
|
|
/*
|
|
* nexus_alloc_resource had better not change *rid...
|
|
*/
|
|
rv = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
|
|
start, end, count, flags);
|
|
if (rvp && (*rvp = rv) != 0) {
|
|
switch (type) {
|
|
case SYS_RES_MEMORY:
|
|
id->id_maddr[*rid] = rv->r_start;
|
|
id->id_msize[*rid] = count;
|
|
break;
|
|
case SYS_RES_IOPORT:
|
|
id->id_port[*rid] = rv->r_start;
|
|
id->id_portsize[*rid] = count;
|
|
break;
|
|
case SYS_RES_IRQ:
|
|
id->id_irq[*rid] = rv->r_start;
|
|
break;
|
|
case SYS_RES_DRQ:
|
|
id->id_drq[*rid] = rv->r_start;
|
|
break;
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
static int
|
|
isa_release_resource(device_t bus, device_t child, int type, int rid,
|
|
struct resource *r)
|
|
{
|
|
int rv;
|
|
struct isa_device *id = DEVTOISA(child);
|
|
|
|
if (rid > 1)
|
|
return EINVAL;
|
|
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
case SYS_RES_DRQ:
|
|
case SYS_RES_IOPORT:
|
|
case SYS_RES_MEMORY:
|
|
break;
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
|
|
rv = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
|
|
|
|
if (rv == 0) {
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
id->id_irqres[rid] = 0;
|
|
break;
|
|
|
|
case SYS_RES_DRQ:
|
|
id->id_drqres[rid] = 0;
|
|
break;
|
|
|
|
case SYS_RES_MEMORY:
|
|
id->id_memres[rid] = 0;
|
|
break;
|
|
|
|
case SYS_RES_IOPORT:
|
|
id->id_portres[rid] = 0;
|
|
break;
|
|
|
|
default:
|
|
return ENOENT;
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* 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).
|
|
*/
|
|
static 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));
|
|
}
|
|
|
|
static 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));
|
|
}
|
|
|
|
static device_method_t isa_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, isa_probe),
|
|
DEVMETHOD(device_attach, isa_attach),
|
|
DEVMETHOD(device_detach, bus_generic_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_print_child, isa_print_child),
|
|
DEVMETHOD(bus_read_ivar, isa_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, isa_write_ivar),
|
|
DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, isa_release_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
DEVMETHOD(bus_setup_intr, isa_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
|
|
|
|
{ 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);
|
|
DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0);
|