freebsd-dev/sys/isa/isa_common.c

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/*-
* Copyright (c) 1999 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.
*
* $Id: isa_common.c,v 1.2 1999/05/28 09:24:58 dfr 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.
*/
/*
* Parts of the ISA bus implementation common to all architectures.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.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>
#ifdef __alpha__ /* XXX workaround a stupid warning */
#include <alpha/isa/isavar.h>
#endif
MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
static devclass_t isa_devclass;
/*
* At 'probe' time, we add all the devices which we know about to the
* bus. The generic attach routine will probe and attach them if they
* are alive.
*/
static int
isa_probe(device_t dev)
{
device_set_desc(dev, "ISA bus");
isa_init(); /* Allow machdep code to initialise */
return bus_generic_probe(dev);
}
extern device_t isa_bus_device;
static int
isa_attach(device_t dev)
{
/*
* Arrange for bus_generic_attach(dev) to be called later.
*/
isa_bus_device = dev;
return 0;
}
/*
* Add a new child with default ivars.
*/
static device_t
isa_add_child(device_t dev, int order, const char *name, int unit)
{
struct isa_device *idev;
idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT);
if (!idev)
return 0;
bzero(idev, sizeof *idev);
resource_list_init(&idev->id_resources);
idev->id_flags = 0;
return device_add_child_ordered(dev, order, name, unit, idev);
}
static void
isa_print_resources(struct resource_list *rl, const char *name, int type,
const char *format)
{
struct resource_list_entry *rle0 = resource_list_find(rl, type, 0);
struct resource_list_entry *rle1 = resource_list_find(rl, type, 1);
if (rle0 || rle1) {
printf(" %s ", name);
if (rle0) {
printf(format, rle0->start);
if (rle0->count > 1) {
printf("-");
printf(format, rle0->start + rle0->count - 1);
}
}
if (rle1) {
if (rle0)
printf(",");
printf(format, rle1->start);
if (rle1->count > 1) {
printf("-");
printf(format, rle1->start + rle1->count - 1);
}
}
}
}
static void
isa_print_child(device_t bus, device_t dev)
{
struct isa_device *idev = DEVTOISA(dev);
struct resource_list *rl = &idev->id_resources;
if (SLIST_FIRST(rl) || idev->id_flags)
printf(" at");
isa_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx");
isa_print_resources(rl, "iomem", SYS_RES_MEMORY, "%#lx");
isa_print_resources(rl, "irq", SYS_RES_IRQ, "%ld");
isa_print_resources(rl, "drq", SYS_RES_DRQ, "%ld");
if (idev->id_flags)
printf(" flags %#x", idev->id_flags);
printf(" on %s%d",
device_get_name(bus), device_get_unit(bus));
}
static int
isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
{
struct isa_device* idev = DEVTOISA(dev);
struct resource_list *rl = &idev->id_resources;
struct resource_list_entry *rle;
switch (index) {
case ISA_IVAR_PORT_0:
rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_PORT_1:
rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_PORTSIZE_0:
rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
if (rle)
*result = rle->count;
else
*result = 0;
break;
case ISA_IVAR_PORTSIZE_1:
rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
if (rle)
*result = rle->count;
else
*result = 0;
break;
case ISA_IVAR_MADDR_0:
rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_MADDR_1:
rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_MSIZE_0:
rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
if (rle)
*result = rle->count;
else
*result = 0;
break;
case ISA_IVAR_MSIZE_1:
rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
if (rle)
*result = rle->count;
else
*result = 0;
break;
case ISA_IVAR_IRQ_0:
rle = resource_list_find(rl, SYS_RES_IRQ, 0);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_IRQ_1:
rle = resource_list_find(rl, SYS_RES_IRQ, 1);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_DRQ_0:
rle = resource_list_find(rl, SYS_RES_DRQ, 0);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_DRQ_1:
rle = resource_list_find(rl, SYS_RES_DRQ, 1);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_FLAGS:
*result = idev->id_flags;
break;
case ISA_IVAR_VENDORID:
*result = idev->id_vendorid;
break;
case ISA_IVAR_SERIAL:
*result = idev->id_serial;
break;
case ISA_IVAR_LOGICALID:
*result = idev->id_logicalid;
break;
case ISA_IVAR_COMPATID:
*result = idev->id_compatid;
break;
default:
return ENOENT;
}
return 0;
}
static int
isa_write_ivar(device_t bus, device_t dev,
int index, uintptr_t value)
{
struct isa_device* idev = DEVTOISA(dev);
switch (index) {
case ISA_IVAR_PORT_0:
case ISA_IVAR_PORT_1:
case ISA_IVAR_PORTSIZE_0:
case ISA_IVAR_PORTSIZE_1:
case ISA_IVAR_MADDR_0:
case ISA_IVAR_MADDR_1:
case ISA_IVAR_MSIZE_0:
case ISA_IVAR_MSIZE_1:
case ISA_IVAR_IRQ_0:
case ISA_IVAR_IRQ_1:
case ISA_IVAR_DRQ_0:
case ISA_IVAR_DRQ_1:
return EINVAL;
case ISA_IVAR_FLAGS:
idev->id_flags = value;
break;
case ISA_IVAR_VENDORID:
idev->id_vendorid = value;
break;
case ISA_IVAR_SERIAL:
idev->id_serial = value;
break;
case ISA_IVAR_LOGICALID:
idev->id_logicalid = value;
break;
case ISA_IVAR_COMPATID:
idev->id_compatid = value;
break;
default:
return (ENOENT);
}
return (0);
}
static int
isa_set_resource(device_t dev, device_t child, int type, int rid,
u_long start, u_long count)
{
struct isa_device* idev = DEVTOISA(child);
struct resource_list *rl = &idev->id_resources;
if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
&& type != SYS_RES_IRQ && type != SYS_RES_DRQ)
return EINVAL;
if (rid < 0 || rid > 1)
return EINVAL;
resource_list_add(rl, type, rid, start, start + count - 1, count);
return 0;
}
static int
isa_get_resource(device_t dev, device_t child, int type, int rid,
u_long *startp, u_long *countp)
{
struct isa_device* idev = DEVTOISA(child);
struct resource_list *rl = &idev->id_resources;
struct resource_list_entry *rle;
rle = resource_list_find(rl, type, rid);
if (!rle)
return ENOENT;
*startp = rle->start;
*countp = rle->count;
return 0;
}
static void
isa_delete_resource(device_t dev, device_t child, int type, int rid)
{
struct isa_device* idev = DEVTOISA(child);
struct resource_list *rl = &idev->id_resources;
resource_list_delete(rl, type, rid);
}
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_add_child, isa_add_child),
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),
/* ISA interface */
DEVMETHOD(isa_set_resource, isa_set_resource),
DEVMETHOD(isa_get_resource, isa_get_resource),
DEVMETHOD(isa_delete_resource, isa_delete_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