Home | History | Annotate | Line # | Download | only in dev 
      1 /*	$NetBSD: com_elb.c,v 1.12 2021/03/16 08:16:53 rin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Juergen Hannken-Illjes.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: com_elb.c,v 1.12 2021/03/16 08:16:53 rin Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/conf.h>
     37 #include <sys/device.h>
     38 #include <sys/systm.h>
     39 #include <sys/tty.h>
     40 
     41 #include <sys/bus.h>
     42 
     43 #include <dev/ic/comreg.h>
     44 #include <dev/ic/comvar.h>
     45 
     46 #include <evbppc/explora/dev/elbvar.h>
     47 
     48 struct com_elb_softc {
     49 	struct com_softc sc_com;
     50 	void *sc_ih;
     51 };
     52 
     53 static int	com_elb_probe(device_t, cfdata_t , void *);
     54 static void	com_elb_attach(device_t, device_t, void *);
     55 
     56 CFATTACH_DECL_NEW(com_elb, sizeof(struct com_elb_softc),
     57     com_elb_probe, com_elb_attach, NULL, NULL);
     58 
     59 int
     60 com_elb_probe(device_t parent, cfdata_t cf, void *aux)
     61 {
     62 	struct elb_attach_args *eaa = aux;
     63 
     64 	if (strcmp(eaa->elb_name, cf->cf_name) != 0)
     65 		return 0;
     66 
     67 	return 1;
     68 }
     69 
     70 void
     71 com_elb_attach(device_t parent, device_t self, void *aux)
     72 {
     73 	struct com_elb_softc *msc = device_private(self);
     74 	struct com_softc *sc = &msc->sc_com;
     75 	struct elb_attach_args *eaa = aux;
     76 	bus_space_handle_t ioh;
     77 
     78 	sc->sc_dev = self;
     79 
     80 	bus_space_map(eaa->elb_bt,
     81 	    _BUS_SPACE_UNSTRIDE(eaa->elb_bt, eaa->elb_base),
     82 	    COM_NPORTS, 0, &ioh);
     83 	com_init_regs(&sc->sc_regs, eaa->elb_bt, ioh,
     84 	    _BUS_SPACE_UNSTRIDE(eaa->elb_bt, eaa->elb_base));
     85 
     86 	sc->sc_frequency = COM_FREQ;
     87 
     88 	com_attach_subr(sc);
     89 
     90 	intr_establish_xname(eaa->elb_irq, IST_LEVEL, IPL_SERIAL, comintr, sc,
     91 	    device_xname(self));
     92 }
     93