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      1 /* $NetBSD: com_pnpbios.c,v 1.16 2018/12/08 17:46:11 thorpej Exp $ */
      2 /*
      3  * Copyright (c) 1999
      4  * 	Matthias Drochner.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions, and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: com_pnpbios.c,v 1.16 2018/12/08 17:46:11 thorpej Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/errno.h>
     34 #include <sys/ioctl.h>
     35 #include <sys/syslog.h>
     36 #include <sys/device.h>
     37 #include <sys/proc.h>
     38 #include <sys/termios.h>
     39 
     40 #include <sys/bus.h>
     41 
     42 #include <dev/isa/isavar.h>
     43 #include <dev/isa/isadmavar.h>
     44 
     45 #include <i386/pnpbios/pnpbiosvar.h>
     46 
     47 #include <dev/ic/comvar.h>
     48 
     49 struct com_pnpbios_softc {
     50 	struct	com_softc sc_com;
     51 	void	*sc_ih;
     52 };
     53 
     54 int com_pnpbios_match(device_t, cfdata_t , void *);
     55 void com_pnpbios_attach(device_t, device_t, void *);
     56 
     57 CFATTACH_DECL_NEW(com_pnpbios, sizeof(struct com_pnpbios_softc),
     58     com_pnpbios_match, com_pnpbios_attach, NULL, NULL);
     59 
     60 int
     61 com_pnpbios_match(device_t parent, cfdata_t match, void *aux)
     62 {
     63 	struct pnpbiosdev_attach_args *aa = aux;
     64 
     65 	if (strcmp(aa->idstr, "PNP0500") &&
     66 	    strcmp(aa->idstr, "PNP0501") &&
     67 	    strcmp(aa->idstr, "PNP0510") &&
     68 	    strcmp(aa->idstr, "PNP0511"))
     69 		return (0);
     70 
     71 	return (1);
     72 }
     73 
     74 void
     75 com_pnpbios_attach(device_t parent, device_t self, void *aux)
     76 {
     77 	struct com_pnpbios_softc *psc = device_private(self);
     78 	struct com_softc *sc = &psc->sc_com;
     79 	struct pnpbiosdev_attach_args *aa = aux;
     80 	bus_space_tag_t iot;
     81 	bus_space_handle_t ioh;
     82 	int iobase;
     83 
     84 	sc->sc_dev = self;
     85 
     86 	if (pnpbios_getiobase(aa->pbt, aa->resc, 0, &iot, &iobase)) {
     87 		aprint_error(": can't get iobase\n");
     88 		return;
     89 	}
     90 
     91 	if ((!com_is_console(iot, iobase, &ioh)) &&
     92 	    pnpbios_io_map(aa->pbt, aa->resc, 0, &iot, &ioh)) {
     93 		aprint_error(": can't map i/o space\n");
     94 		return;
     95 	}
     96 
     97 	com_init_regs(&sc->sc_regs, iot, ioh, iobase);
     98 
     99 	aprint_normal("\n");
    100 	pnpbios_print_devres(self, aa);
    101 
    102 	aprint_normal("%s", device_xname(self));
    103 
    104 	/*
    105 	 * if the chip isn't something we recognise skip it.
    106 	 */
    107 	if (com_probe_subr(&sc->sc_regs) == 0) {
    108 		aprint_error(": com probe failed\n");
    109 		return;
    110 	}
    111 
    112 	sc->sc_frequency = 115200 * 16;
    113 
    114 	com_attach_subr(sc);
    115 
    116 	psc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_SERIAL,
    117 					    comintr, sc);
    118 }
    119