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hil_intio.c revision 1.3.6.2 
      1 /*	$NetBSD: hil_intio.c,v 1.3.6.2 2011/06/06 09:05:36 jruoho Exp $	*/
      2 /*	$OpenBSD: hil_intio.c,v 1.8 2007/01/06 20:10:57 miod Exp $	*/
      3 
      4 /*
      5  * Copyright (c) 2005, Miodrag Vallat.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     21  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     23  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     25  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     26  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     27  * POSSIBILITY OF SUCH DAMAGE.
     28  *
     29  */
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/device.h>
     34 #include <sys/conf.h>
     35 #include <sys/bus.h>
     36 #include <sys/cpu.h>
     37 
     38 #include <machine/intr.h>
     39 
     40 #include <dev/cons.h>
     41 
     42 #include <hp300/dev/intiovar.h>
     43 
     44 #include <machine/hil_machdep.h>
     45 #include <dev/hil/hilvar.h>
     46 
     47 static int	hil_intio_match(device_t, cfdata_t, void *);
     48 static void	hil_intio_attach(device_t, device_t, void *);
     49 
     50 CFATTACH_DECL_NEW(hil_intio, sizeof(struct hil_softc),
     51     hil_intio_match, hil_intio_attach, NULL, NULL);
     52 
     53 int
     54 hil_intio_match(device_t parent, cfdata_t cf, void *aux)
     55 {
     56 	struct intio_attach_args *ia = aux;
     57 	static int hil_matched = 0;
     58 
     59 	if (strcmp("hil", ia->ia_modname) != 0)
     60 		return 0;
     61 
     62 	/* Allow only one instance. */
     63 	if (hil_matched != 0)
     64 		return 0;
     65 
     66 	if (badaddr((void *)ia->ia_addr))	/* should not happen! */
     67 		return 0;
     68 
     69 	return 1;
     70 }
     71 
     72 int hil_is_console = -1;	/* undecided */
     73 
     74 void
     75 hil_intio_attach(device_t parent, device_t self, void *aux)
     76 {
     77 	struct hil_softc *sc = device_private(self);
     78 	struct intio_attach_args *ia = aux;
     79 
     80 	sc->sc_dev = self;
     81 	sc->sc_bst = ia->ia_bst;
     82 	if (bus_space_map(sc->sc_bst, ia->ia_iobase,
     83 	    HILMAPSIZE, 0, &sc->sc_bsh) != 0) {
     84 		aprint_error(": couldn't map hil controller\n");
     85 		return;
     86 	}
     87 
     88 	/*
     89 	 * Check that the configured console device is a wsdisplay.
     90 	 */
     91 	if (major(cn_tab->cn_dev) != devsw_name2chr("wsdisplay", NULL, 0))
     92 		hil_is_console = 0;
     93 
     94 	hil_attach(sc, &hil_is_console);
     95 	intr_establish(hil_intr, sc, ia->ia_ipl, IPL_TTY);
     96 
     97 	config_interrupts(self, hil_attach_deferred);
     98 }
     99