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/* $NetBSD: com_jensenio.c,v 1.19 2021/05/07 16:58:34 thorpej Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: com_jensenio.c,v 1.19 2021/05/07 16:58:34 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/types.h>
#include <sys/device.h>
#include <sys/cpu.h>
#include <machine/intr.h>
#include <sys/bus.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#include <dev/eisa/eisavar.h>
#include <dev/isa/isavar.h>
#include <alpha/jensenio/jenseniovar.h>
struct com_jensenio_softc {
struct com_softc sc_com; /* real "com" softc */
/* Jensen-specific goo. */
struct jensenio_scb_intrhand sc_jih;
};
static int com_jensenio_match(device_t, cfdata_t , void *);
static void com_jensenio_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(com_jensenio, sizeof(struct com_jensenio_softc),
com_jensenio_match, com_jensenio_attach, NULL, NULL);
static int
com_jensenio_match(device_t parent, cfdata_t match, void *aux)
{
struct jensenio_attach_args *ja = aux;
/* Always present. */
if (strcmp(ja->ja_name, match->cf_name) == 0)
return (1);
return (0);
}
static void
com_jensenio_attach(device_t parent, device_t self, void *aux)
{
struct com_jensenio_softc *jsc = device_private(self);
struct com_softc *sc = &jsc->sc_com;
struct jensenio_attach_args *ja = aux;
bus_space_handle_t ioh;
sc->sc_dev = self;
if (com_is_console(ja->ja_iot, ja->ja_ioaddr, &ioh) == 0 &&
bus_space_map(ja->ja_iot, ja->ja_ioaddr, COM_NPORTS, 0,
&ioh) != 0) {
aprint_error(": can't map i/o space\n");
return;
}
com_init_regs(&sc->sc_regs, ja->ja_iot, ioh, ja->ja_ioaddr);
sc->sc_frequency = COM_FREQ;
/*
* According to comments in Linux drivers/tty/serial/8250/8250.h,
* the driver has to set OUT1 and OUT2 lines for "some ALPHA"
* otherwise "the machine locks up with endless interrupts."
* Note OUT2 (MCR_IENABLE) is set in MI com_attach_subr()
* so we have to set OUT1 (MCR_DSR) in the MD attachment.
* See also PR/36628.
*/
SET(sc->sc_mcr, MCR_DRS);
com_attach_subr(sc);
jensenio_intr_establish(&jsc->sc_jih, ja->ja_irq[0],
0, comintr, sc);
aprint_normal_dev(self, "interrupting at vector 0x%x\n",
ja->ja_irq[0]);
if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup)) {
aprint_error_dev(self, "could not establish shutdown hook");
}
}
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