2 * Copyright 2002 by Peter Grehan. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * PSIM local bus 16550
34 #include <sys/param.h>
35 #include <sys/systm.h>
38 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/mutex.h>
42 #include <sys/module.h>
44 #include <machine/bus.h>
45 #include <sys/timepps.h>
47 #include <dev/ofw/openfirm.h>
48 #include <powerpc/psim/iobusvar.h>
50 #include <dev/sio/sioreg.h>
51 #include <dev/sio/siovar.h>
53 #include <isa/isavar.h> /* for isa_irq_pending() prototype */
55 static int sio_iobus_attach(device_t dev);
56 static int sio_iobus_probe(device_t dev);
58 static device_method_t sio_iobus_methods[] = {
59 /* Device interface */
60 DEVMETHOD(device_probe, sio_iobus_probe),
61 DEVMETHOD(device_attach, sio_iobus_attach),
66 static driver_t sio_iobus_driver = {
73 sio_iobus_attach(device_t dev)
75 return (sioattach(dev, 0, DEFAULT_RCLK));
79 sio_iobus_probe(device_t dev)
81 char *type = iobus_get_name(dev);
83 if (strncmp(type, "com", 3) != 0)
87 device_set_desc(dev, "PSIM serial port");
90 * Call sioprobe with noprobe=1, to avoid hitting a psim bug
92 return (sioprobe(dev, 0, 0, 1));
95 DRIVER_MODULE(sio, iobus, sio_iobus_driver, sio_devclass, 0, 0);
98 * Stub function. Perhaps a way to get this to work correctly would
99 * be for child devices to set a field in the dev structure to
100 * inform the parent that they are isa devices, and then use a
101 * intr_pending() call which would propagate up to nexus to see
102 * if the interrupt controller had any intrs in the isa group set
105 isa_irq_pending(void)