diff options
author | grehan <grehan@FreeBSD.org> | 2002-09-19 04:57:10 +0000 |
---|---|---|
committer | grehan <grehan@FreeBSD.org> | 2002-09-19 04:57:10 +0000 |
commit | 22d2979d2dd5d80d32a308dc412a86747ca1ecee (patch) | |
tree | d8d9590f9f64d7806c566b3381c82a1bf3b3ba02 /sys/powerpc/psim/uart_iobus.c | |
parent | b9926b1f0b93d56ded1b08d95336ddc0886e1403 (diff) | |
download | FreeBSD-src-22d2979d2dd5d80d32a308dc412a86747ca1ecee.zip FreeBSD-src-22d2979d2dd5d80d32a308dc412a86747ca1ecee.tar.gz |
Support files and a h/w tree description for the PSIM ppc simulator
Approved by: benno
Diffstat (limited to 'sys/powerpc/psim/uart_iobus.c')
-rw-r--r-- | sys/powerpc/psim/uart_iobus.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/sys/powerpc/psim/uart_iobus.c b/sys/powerpc/psim/uart_iobus.c new file mode 100644 index 0000000..f2174ae --- /dev/null +++ b/sys/powerpc/psim/uart_iobus.c @@ -0,0 +1,109 @@ +/* + * Copyright 2002 by Peter Grehan. 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. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. + * + * $FreeBSD$ + */ + +/* + * PSIM local bus 16550 + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/kernel.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/mutex.h> +#include <sys/module.h> +#include <sys/tty.h> +#include <machine/bus_pio.h> +#include <machine/bus.h> +#include <sys/timepps.h> + +#include <dev/ofw/openfirm.h> +#include <powerpc/psim/iobusvar.h> + +#include <dev/sio/sioreg.h> +#include <dev/sio/siovar.h> + +#include <isa/isavar.h> /* for isa_irq_pending() prototype */ + +static int sio_iobus_attach(device_t dev); +static int sio_iobus_probe(device_t dev); + +static device_method_t sio_iobus_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, sio_iobus_probe), + DEVMETHOD(device_attach, sio_iobus_attach), + + { 0, 0 } +}; + +static driver_t sio_iobus_driver = { + sio_driver_name, + sio_iobus_methods, + 0, +}; + +static int +sio_iobus_attach(device_t dev) +{ + return (sioattach(dev, 0, DEFAULT_RCLK)); +} + +static int +sio_iobus_probe(device_t dev) +{ + char *type = iobus_get_name(dev); + + if (strncmp(type, "com", 3) != 0) + return (ENXIO); + + + device_set_desc(dev, "PSIM serial port"); + + /* + * Call sioprobe with noprobe=1, to avoid hitting a psim bug + */ + return (sioprobe(dev, 0, 0, 1)); +} + +DRIVER_MODULE(sio, iobus, sio_iobus_driver, sio_devclass, 0, 0); + +/* + * Stub function. Perhaps a way to get this to work correctly would + * be for child devices to set a field in the dev structure to + * inform the parent that they are isa devices, and then use a + * intr_pending() call which would propagate up to nexus to see + * if the interrupt controller had any intrs in the isa group set + */ +intrmask_t +isa_irq_pending(void) +{ + return (0); +} |