Home | History | Annotate | Line # | Download | only in dev
lpt_ebus.c revision 1.18 
      1 /*	$NetBSD: lpt_ebus.c,v 1.18 2003/07/15 03:36:05 lukem Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, 2000 Matthew R. Green
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 /*
     32  * NS Super I/O PC87332VLJ "lpt" to ebus attachment
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: lpt_ebus.c,v 1.18 2003/07/15 03:36:05 lukem Exp $");
     37 
     38 #include <sys/types.h>
     39 #include <sys/param.h>
     40 #include <sys/systm.h>
     41 #include <sys/device.h>
     42 #include <sys/tty.h>
     43 
     44 #include <machine/bus.h>
     45 
     46 #include <dev/ebus/ebusreg.h>
     47 #include <dev/ebus/ebusvar.h>
     48 
     49 #include <dev/ic/lptvar.h>
     50 
     51 int	lpt_ebus_match __P((struct device *, struct cfdata *, void *));
     52 void	lpt_ebus_attach __P((struct device *, struct device *, void *));
     53 
     54 CFATTACH_DECL(lpt_ebus, sizeof(struct lpt_softc),
     55     lpt_ebus_match, lpt_ebus_attach, NULL, NULL);
     56 
     57 #define	ROM_LPT_NAME	"ecpp"
     58 
     59 int
     60 lpt_ebus_match(parent, match, aux)
     61 	struct device *parent;
     62 	struct cfdata *match;
     63 	void *aux;
     64 {
     65 	struct ebus_attach_args *ea = aux;
     66 
     67 	if (strcmp(ea->ea_name, ROM_LPT_NAME) == 0)
     68 		return (1);
     69 
     70 	return (0);
     71 }
     72 
     73 void
     74 lpt_ebus_attach(parent, self, aux)
     75 	struct device *parent, *self;
     76 	void *aux;
     77 {
     78 	struct lpt_softc *sc = (void *)self;
     79 	struct ebus_attach_args *ea = aux;
     80 	int i;
     81 
     82 	sc->sc_iot = ea->ea_bustag;
     83 	/*
     84 	 * Addresses that should be supplied by the prom:
     85 	 *	- normal lpt registers
     86 	 *	- ns873xx configuration registers
     87 	 *	- DMA space
     88 	 * The `lpt' driver does not use DMA accesses, so we can
     89 	 * ignore that for now.  We should enable the lpt port in
     90 	 * the ns873xx registers here. XXX
     91 	 *
     92 	 * Use the prom address if there.
     93 	 */
     94 	if (ea->ea_nvaddr)
     95 		sparc_promaddr_to_handle(sc->sc_iot, ea->ea_vaddr[0],
     96 			&sc->sc_ioh);
     97 	else if (bus_space_map(sc->sc_iot,
     98 			      EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
     99 			      ea->ea_reg[0].size,
    100 			      0,
    101 			      &sc->sc_ioh) != 0) {
    102 		printf(": can't map register space\n");
    103                 return;
    104 	}
    105 
    106 	for (i = 0; i < ea->ea_nintr; i++)
    107 		bus_intr_establish(ea->ea_bustag, ea->ea_intr[i],
    108 				   IPL_SERIAL, lptintr, sc);
    109 	printf("\n");
    110 
    111 	lpt_attach_subr(sc);
    112 }
    113