NetBSD-5.0.2/sys/arch/powerpc/ibm4xx/dev/com_opb.c
/* $NetBSD: com_opb.c,v 1.20 2008/03/14 15:09:10 cube Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*
* Copyright (c) 1998
* Matthias Drochner. 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 ``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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: com_opb.c,v 1.20 2008/03/14 15:09:10 cube Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/tty.h>
#include <sys/systm.h>
#include <lib/libkern/libkern.h>
#include <machine/cpu.h>
#include <powerpc/ibm4xx/dev/opbvar.h>
#include <powerpc/ibm4xx/dev/comopbvar.h>
#include "com.h"
#if (NCOM > 0)
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#endif
struct com_opb_softc {
struct com_softc sc_com;
void *sc_ih;
};
static int com_opb_probe(device_t, cfdata_t , void *);
static void com_opb_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(com_opb, sizeof(struct com_opb_softc),
com_opb_probe, com_opb_attach, NULL, NULL);
int
com_opb_probe(device_t parent, cfdata_t cf, void *aux)
{
struct opb_attach_args *oaa = aux;
/* match only com devices */
if (strcmp(oaa->opb_name, cf->cf_name) != 0)
return 0;
return (1);
}
void
com_opb_attach(device_t parent, device_t self, void *aux)
{
struct com_opb_softc *msc = device_private(self);
struct com_softc *sc = &msc->sc_com;
struct opb_attach_args *oaa = aux;
prop_number_t freq;
bus_space_handle_t ioh;
sc->sc_dev = self;
/* XXX console check */
bus_space_map(oaa->opb_bt, oaa->opb_addr, COM_NPORTS, 0, &ioh);
COM_INIT_REGS(sc->sc_regs, oaa->opb_bt, ioh, oaa->opb_addr);
freq = prop_dictionary_get(device_properties(sc->sc_dev),
"clock-frequency");
if (freq == NULL) {
aprint_error(": unable to get clock-frequency property\n");
return;
}
KASSERT(prop_object_type(freq) == PROP_TYPE_NUMBER);
sc->sc_frequency = (int) prop_number_integer_value(freq);
com_attach_subr(sc);
intr_establish(oaa->opb_irq, IST_LEVEL, IPL_SERIAL, comintr, sc);
}
/*
* com_opb_cnattach:
* Initialize the system console.
*/
void
com_opb_cnattach(int com_freq, int conaddr, int conspeed, int conmode)
{
static int attached = 0;
#if (NCOM > 0)
struct com_regs regs;
#endif
if (attached)
return;
attached = 1;
#if (NCOM > 0)
/* We *know* the com-console attaches to opb */
regs.cr_iot = opb_get_bus_space_tag();
regs.cr_iobase = conaddr;
regs.cr_nports = COM_NPORTS;
/* regs.ioh is initialized by comcnattach */
if (comcnattach1(®s, conspeed, com_freq, COM_TYPE_NORMAL, conmode))
panic("can't init serial console @%x", conaddr);
else
return;
#endif
panic("console device missing -- serial console not in kernel");
/* Of course, this is moot if there is no console... */
}
/*
* com_opb_device_register:
*/
void
com_opb_device_register(device_t dev, int frequency)
{
/* Set the frequency of the on-chip UART. */
prop_number_t pn = prop_number_create_integer(frequency);
KASSERT(pn != NULL);
if (prop_dictionary_set(device_properties(dev),
"clock-frequency", pn) == false) {
printf("WARNING: unable to set clock-frequency "
"property for %s\n", device_xname(dev));
}
prop_object_release(pn);
}