585484b918
stomping on the units intended for the motherboard sio ports. This is no real substitute for the not-yet-committed device wiring enhancements. Code taken from sio's pci attachment.
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/*-
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* Copyright (c) 2002 JF Hay. All rights reserved.
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* Copyright (c) 2001 M. Warner Losh. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/module.h>
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#include <sys/tty.h>
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#include <machine/bus.h>
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#include <sys/timepps.h>
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#include <dev/puc/puc_bus.h>
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#include <dev/sio/siovar.h>
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#include <dev/sio/sioreg.h>
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static int sio_puc_attach(device_t dev);
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static int sio_puc_probe(device_t dev);
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static device_method_t sio_puc_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, sio_puc_probe),
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DEVMETHOD(device_attach, sio_puc_attach),
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DEVMETHOD(device_detach, siodetach),
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{ 0, 0 }
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};
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static driver_t sio_puc_driver = {
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sio_driver_name,
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sio_puc_methods,
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0,
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};
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/*
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* Don't cut and paste this to other drivers. It is a horrible kludge
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* which will fail to work and also be unnecessary in future versions.
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*/
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static void
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sio_puc_kludge_unit(device_t dev)
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{
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devclass_t dc;
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int err;
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int start;
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int unit;
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unit = 0;
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start = 0;
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while (resource_int_value("sio", unit, "port", &start) == 0 &&
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start > 0)
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unit++;
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if (device_get_unit(dev) < unit) {
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dc = device_get_devclass(dev);
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while (devclass_get_device(dc, unit))
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unit++;
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device_printf(dev, "moving to sio%d\n", unit);
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err = device_set_unit(dev, unit); /* EVIL DO NOT COPY */
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if (err)
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device_printf(dev, "error moving device %d\n", err);
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}
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}
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static int
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sio_puc_attach(device_t dev)
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{
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uintptr_t rclk;
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if (BUS_READ_IVAR(device_get_parent(dev), dev, PUC_IVAR_CLOCK,
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&rclk) != 0)
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rclk = DEFAULT_RCLK;
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sio_puc_kludge_unit(dev);
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return (sioattach(dev, 0, rclk));
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}
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static int
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sio_puc_probe(device_t dev)
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{
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device_t parent;
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uintptr_t rclk, type;
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int error;
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parent = device_get_parent(dev);
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if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type))
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return (ENXIO);
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if (type != PUC_TYPE_SERIAL)
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return (ENXIO);
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if (BUS_READ_IVAR(parent, dev, PUC_IVAR_CLOCK, &rclk))
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rclk = DEFAULT_RCLK;
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#ifdef PC98
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SET_FLAG(dev, SET_IFTYPE(COM_IF_NS16550));
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#endif
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error = sioprobe(dev, 0, rclk, 1);
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return ((error > 0) ? error : BUS_PROBE_LOW_PRIORITY);
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}
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DRIVER_MODULE(sio, puc, sio_puc_driver, sio_devclass, 0, 0);
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