208 lines
6.8 KiB
C
208 lines
6.8 KiB
C
/* $NetBSD: com_dio.c,v 1.3 2005/01/02 12:03:12 tsutsui Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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* 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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)com.c 7.5 (Berkeley) 5/16/91
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: com_dio.c,v 1.3 2005/01/02 12:03:12 tsutsui Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/termios.h>
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#include <sys/ttydefaults.h>
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#include <machine/bus.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#include <hp300/dev/diovar.h>
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#include <hp300/dev/diodevs.h>
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#include <hp300/dev/com_dioreg.h>
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#include <hp300/dev/com_diovar.h>
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struct com_dio_softc {
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struct com_softc sc_com; /* real "com" softc */
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/* DIO-specific goo. */
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struct bus_space_tag sc_tag; /* device specific bus space tag */
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void *sc_ih; /* interrupt handler */
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};
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static int com_dio_match(struct device *, struct cfdata *, void *);
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static void com_dio_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(com_dio, sizeof(struct com_dio_softc),
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com_dio_match, com_dio_attach, NULL, NULL);
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static int com_dio_speed = TTYDEF_SPEED;
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static struct bus_space_tag comcntag;
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#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
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static int
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com_dio_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct dio_attach_args *da = aux;
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switch (da->da_id) {
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case DIO_DEVICE_ID_DCA0:
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case DIO_DEVICE_ID_DCA0REM:
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case DIO_DEVICE_ID_DCA1:
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case DIO_DEVICE_ID_DCA1REM:
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return 1;
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}
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return 0;
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}
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static void
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com_dio_attach(struct device *parent, struct device *self, void *aux)
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{
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struct com_dio_softc *dsc = (void *)self;
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struct com_softc *sc = &dsc->sc_com;
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bus_space_tag_t iot;
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bus_space_handle_t iohdca, iohcom;
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struct dio_attach_args *da = aux;
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int isconsole;
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isconsole = com_is_console(&comcntag, da->da_addr + DCA_COM_OFFSET,
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&iohcom);
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if (isconsole) {
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iot = &comcntag;
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bus_space_unmap(iot, iohcom, COM_NPORTS);
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} else {
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iot = &dsc->sc_tag;
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memcpy(iot, da->da_bst, sizeof(struct bus_space_tag));
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dio_set_bus_space_oddbyte(iot);
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}
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if (bus_space_map(iot, da->da_addr, DCA_SIZE, 0, &iohdca) ||
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bus_space_subregion(iot, iohdca, DCA_COM_OFFSET,
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COM_NPORTS << 1, &iohcom)) {
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printf(": can't map i/o space\n");
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return;
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}
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if (!isconsole) {
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bus_space_write_1(iot, iohdca, DCA_RESET, 0xff);
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DELAY(1000);
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}
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sc->sc_iot = iot;
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sc->sc_ioh = iohcom;
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sc->sc_iobase = da->da_addr + DCA_COM_OFFSET;
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sc->sc_frequency = COM_DIO_FREQ;
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com_attach_subr(sc);
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dsc->sc_ih = dio_intr_establish(comintr, sc, da->da_ipl,
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((sc->sc_hwflags & COM_HW_FIFO) != 0) ? IPL_TTY : IPL_TTYNOBUF);
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/* Enable interrupts. */
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bus_space_write_1(iot, iohdca, DCA_IC, IC_IE);
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}
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int
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com_dio_cnattach(bus_space_tag_t bst, bus_addr_t addr, int scode)
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{
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bus_space_tag_t iot = &comcntag;
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bus_space_handle_t iohdca;
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uint8_t id;
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memcpy(iot, bst, sizeof(struct bus_space_tag));
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dio_set_bus_space_oddbyte(iot);
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if (bus_space_map(iot, addr, DCA_SIZE, 0, &iohdca))
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return 1;
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bus_space_write_1(iot, iohdca, DCA_RESET, 0xff);
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DELAY(100);
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bus_space_write_1(iot, iohdca, DCA_IC, IC_IE);
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id = bus_space_read_1(iot, iohdca, DCA_ID);
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bus_space_unmap(iot, iohdca, DCA_SIZE);
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switch (id) {
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#ifdef CONSCODE
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case DCAID0:
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case DCAID1:
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#endif
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case DCAREMID0:
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case DCAREMID1:
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break;
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default:
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return 1;
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}
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comcnattach(iot, addr + DCA_COM_OFFSET, com_dio_speed, COM_DIO_FREQ,
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COM_TYPE_NORMAL, CONMODE);
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return 0;
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}
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